Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1 | /* |
| 2 | drbd_nl.c |
| 3 | |
| 4 | This file is part of DRBD by Philipp Reisner and Lars Ellenberg. |
| 5 | |
| 6 | Copyright (C) 2001-2008, LINBIT Information Technologies GmbH. |
| 7 | Copyright (C) 1999-2008, Philipp Reisner <philipp.reisner@linbit.com>. |
| 8 | Copyright (C) 2002-2008, Lars Ellenberg <lars.ellenberg@linbit.com>. |
| 9 | |
| 10 | drbd is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by |
| 12 | the Free Software Foundation; either version 2, or (at your option) |
| 13 | any later version. |
| 14 | |
| 15 | drbd is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | GNU General Public License for more details. |
| 19 | |
| 20 | You should have received a copy of the GNU General Public License |
| 21 | along with drbd; see the file COPYING. If not, write to |
| 22 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| 23 | |
| 24 | */ |
| 25 | |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 26 | #include <linux/module.h> |
| 27 | #include <linux/drbd.h> |
| 28 | #include <linux/in.h> |
| 29 | #include <linux/fs.h> |
| 30 | #include <linux/file.h> |
| 31 | #include <linux/slab.h> |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 32 | #include <linux/blkpg.h> |
| 33 | #include <linux/cpumask.h> |
| 34 | #include "drbd_int.h" |
Andreas Gruenbacher | a3603a6 | 2011-05-30 11:47:37 +0200 | [diff] [blame] | 35 | #include "drbd_protocol.h" |
Philipp Reisner | 265be2d | 2010-05-31 10:14:17 +0200 | [diff] [blame] | 36 | #include "drbd_req.h" |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 37 | #include "drbd_wrappers.h" |
| 38 | #include <asm/unaligned.h> |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 39 | #include <linux/drbd_limits.h> |
Philipp Reisner | 87f7be4 | 2010-06-11 13:56:33 +0200 | [diff] [blame] | 40 | #include <linux/kthread.h> |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 41 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 42 | #include <net/genetlink.h> |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 43 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 44 | /* .doit */ |
| 45 | // int drbd_adm_create_resource(struct sk_buff *skb, struct genl_info *info); |
| 46 | // int drbd_adm_delete_resource(struct sk_buff *skb, struct genl_info *info); |
| 47 | |
Andreas Gruenbacher | 05a10ec | 2011-06-07 22:54:17 +0200 | [diff] [blame] | 48 | int drbd_adm_new_minor(struct sk_buff *skb, struct genl_info *info); |
| 49 | int drbd_adm_del_minor(struct sk_buff *skb, struct genl_info *info); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 50 | |
Andreas Gruenbacher | 789c1b6 | 2011-06-06 16:16:44 +0200 | [diff] [blame] | 51 | int drbd_adm_new_resource(struct sk_buff *skb, struct genl_info *info); |
| 52 | int drbd_adm_del_resource(struct sk_buff *skb, struct genl_info *info); |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 53 | int drbd_adm_down(struct sk_buff *skb, struct genl_info *info); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 54 | |
| 55 | int drbd_adm_set_role(struct sk_buff *skb, struct genl_info *info); |
| 56 | int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info); |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 57 | int drbd_adm_disk_opts(struct sk_buff *skb, struct genl_info *info); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 58 | int drbd_adm_detach(struct sk_buff *skb, struct genl_info *info); |
| 59 | int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info); |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 60 | int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 61 | int drbd_adm_resize(struct sk_buff *skb, struct genl_info *info); |
| 62 | int drbd_adm_start_ov(struct sk_buff *skb, struct genl_info *info); |
| 63 | int drbd_adm_new_c_uuid(struct sk_buff *skb, struct genl_info *info); |
| 64 | int drbd_adm_disconnect(struct sk_buff *skb, struct genl_info *info); |
| 65 | int drbd_adm_invalidate(struct sk_buff *skb, struct genl_info *info); |
| 66 | int drbd_adm_invalidate_peer(struct sk_buff *skb, struct genl_info *info); |
| 67 | int drbd_adm_pause_sync(struct sk_buff *skb, struct genl_info *info); |
| 68 | int drbd_adm_resume_sync(struct sk_buff *skb, struct genl_info *info); |
| 69 | int drbd_adm_suspend_io(struct sk_buff *skb, struct genl_info *info); |
| 70 | int drbd_adm_resume_io(struct sk_buff *skb, struct genl_info *info); |
| 71 | int drbd_adm_outdate(struct sk_buff *skb, struct genl_info *info); |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 72 | int drbd_adm_resource_opts(struct sk_buff *skb, struct genl_info *info); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 73 | int drbd_adm_get_status(struct sk_buff *skb, struct genl_info *info); |
| 74 | int drbd_adm_get_timeout_type(struct sk_buff *skb, struct genl_info *info); |
| 75 | /* .dumpit */ |
| 76 | int drbd_adm_get_status_all(struct sk_buff *skb, struct netlink_callback *cb); |
| 77 | |
| 78 | #include <linux/drbd_genl_api.h> |
Andreas Gruenbacher | 01b39b5 | 2011-06-10 12:57:26 +0200 | [diff] [blame] | 79 | #include "drbd_nla.h" |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 80 | #include <linux/genl_magic_func.h> |
| 81 | |
| 82 | /* used blkdev_get_by_path, to claim our meta data device(s) */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 83 | static char *drbd_m_holder = "Hands off! this is DRBD's meta data device."; |
| 84 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 85 | /* Configuration is strictly serialized, because generic netlink message |
| 86 | * processing is strictly serialized by the genl_lock(). |
| 87 | * Which means we can use one static global drbd_config_context struct. |
| 88 | */ |
| 89 | static struct drbd_config_context { |
| 90 | /* assigned from drbd_genlmsghdr */ |
| 91 | unsigned int minor; |
| 92 | /* assigned from request attributes, if present */ |
| 93 | unsigned int volume; |
| 94 | #define VOLUME_UNSPECIFIED (-1U) |
| 95 | /* pointer into the request skb, |
| 96 | * limited lifetime! */ |
Andreas Gruenbacher | 7c3063c | 2011-06-09 17:52:12 +0200 | [diff] [blame] | 97 | char *resource_name; |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 98 | struct nlattr *my_addr; |
| 99 | struct nlattr *peer_addr; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 100 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 101 | /* reply buffer */ |
| 102 | struct sk_buff *reply_skb; |
| 103 | /* pointer into reply buffer */ |
| 104 | struct drbd_genlmsghdr *reply_dh; |
| 105 | /* resolved from attributes, if possible */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 106 | struct drbd_device *device; |
Andreas Gruenbacher | 4bc7604 | 2011-06-13 14:27:45 +0200 | [diff] [blame] | 107 | struct drbd_resource *resource; |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 108 | struct drbd_connection *connection; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 109 | } adm_ctx; |
| 110 | |
| 111 | static void drbd_adm_send_reply(struct sk_buff *skb, struct genl_info *info) |
| 112 | { |
| 113 | genlmsg_end(skb, genlmsg_data(nlmsg_data(nlmsg_hdr(skb)))); |
| 114 | if (genlmsg_reply(skb, info)) |
| 115 | printk(KERN_ERR "drbd: error sending genl reply\n"); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 116 | } |
| 117 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 118 | /* Used on a fresh "drbd_adm_prepare"d reply_skb, this cannot fail: The only |
| 119 | * reason it could fail was no space in skb, and there are 4k available. */ |
Lars Ellenberg | 8432b31 | 2011-03-08 16:11:16 +0100 | [diff] [blame] | 120 | int drbd_msg_put_info(const char *info) |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 121 | { |
| 122 | struct sk_buff *skb = adm_ctx.reply_skb; |
| 123 | struct nlattr *nla; |
| 124 | int err = -EMSGSIZE; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 125 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 126 | if (!info || !info[0]) |
| 127 | return 0; |
| 128 | |
| 129 | nla = nla_nest_start(skb, DRBD_NLA_CFG_REPLY); |
| 130 | if (!nla) |
| 131 | return err; |
| 132 | |
| 133 | err = nla_put_string(skb, T_info_text, info); |
| 134 | if (err) { |
| 135 | nla_nest_cancel(skb, nla); |
| 136 | return err; |
| 137 | } else |
| 138 | nla_nest_end(skb, nla); |
| 139 | return 0; |
| 140 | } |
| 141 | |
| 142 | /* This would be a good candidate for a "pre_doit" hook, |
| 143 | * and per-family private info->pointers. |
| 144 | * But we need to stay compatible with older kernels. |
| 145 | * If it returns successfully, adm_ctx members are valid. |
| 146 | */ |
| 147 | #define DRBD_ADM_NEED_MINOR 1 |
Andreas Gruenbacher | 44e52cf | 2011-06-14 16:07:32 +0200 | [diff] [blame] | 148 | #define DRBD_ADM_NEED_RESOURCE 2 |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 149 | #define DRBD_ADM_NEED_CONNECTION 4 |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 150 | static int drbd_adm_prepare(struct sk_buff *skb, struct genl_info *info, |
| 151 | unsigned flags) |
| 152 | { |
| 153 | struct drbd_genlmsghdr *d_in = info->userhdr; |
| 154 | const u8 cmd = info->genlhdr->cmd; |
| 155 | int err; |
| 156 | |
| 157 | memset(&adm_ctx, 0, sizeof(adm_ctx)); |
| 158 | |
| 159 | /* genl_rcv_msg only checks for CAP_NET_ADMIN on "GENL_ADMIN_PERM" :( */ |
Philipp Reisner | 9868365 | 2012-11-09 14:18:43 +0100 | [diff] [blame] | 160 | if (cmd != DRBD_ADM_GET_STATUS && !capable(CAP_NET_ADMIN)) |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 161 | return -EPERM; |
| 162 | |
| 163 | adm_ctx.reply_skb = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); |
Andreas Gruenbacher | 1e2a255 | 2011-05-24 14:17:08 +0200 | [diff] [blame] | 164 | if (!adm_ctx.reply_skb) { |
| 165 | err = -ENOMEM; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 166 | goto fail; |
Andreas Gruenbacher | 1e2a255 | 2011-05-24 14:17:08 +0200 | [diff] [blame] | 167 | } |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 168 | |
| 169 | adm_ctx.reply_dh = genlmsg_put_reply(adm_ctx.reply_skb, |
| 170 | info, &drbd_genl_family, 0, cmd); |
| 171 | /* put of a few bytes into a fresh skb of >= 4k will always succeed. |
| 172 | * but anyways */ |
Andreas Gruenbacher | 1e2a255 | 2011-05-24 14:17:08 +0200 | [diff] [blame] | 173 | if (!adm_ctx.reply_dh) { |
| 174 | err = -ENOMEM; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 175 | goto fail; |
Andreas Gruenbacher | 1e2a255 | 2011-05-24 14:17:08 +0200 | [diff] [blame] | 176 | } |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 177 | |
| 178 | adm_ctx.reply_dh->minor = d_in->minor; |
| 179 | adm_ctx.reply_dh->ret_code = NO_ERROR; |
| 180 | |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 181 | adm_ctx.volume = VOLUME_UNSPECIFIED; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 182 | if (info->attrs[DRBD_NLA_CFG_CONTEXT]) { |
| 183 | struct nlattr *nla; |
| 184 | /* parse and validate only */ |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 185 | err = drbd_cfg_context_from_attrs(NULL, info); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 186 | if (err) |
| 187 | goto fail; |
| 188 | |
| 189 | /* It was present, and valid, |
| 190 | * copy it over to the reply skb. */ |
| 191 | err = nla_put_nohdr(adm_ctx.reply_skb, |
| 192 | info->attrs[DRBD_NLA_CFG_CONTEXT]->nla_len, |
| 193 | info->attrs[DRBD_NLA_CFG_CONTEXT]); |
| 194 | if (err) |
| 195 | goto fail; |
| 196 | |
| 197 | /* and assign stuff to the global adm_ctx */ |
| 198 | nla = nested_attr_tb[__nla_type(T_ctx_volume)]; |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 199 | if (nla) |
| 200 | adm_ctx.volume = nla_get_u32(nla); |
Andreas Gruenbacher | 7c3063c | 2011-06-09 17:52:12 +0200 | [diff] [blame] | 201 | nla = nested_attr_tb[__nla_type(T_ctx_resource_name)]; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 202 | if (nla) |
Andreas Gruenbacher | 7c3063c | 2011-06-09 17:52:12 +0200 | [diff] [blame] | 203 | adm_ctx.resource_name = nla_data(nla); |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 204 | adm_ctx.my_addr = nested_attr_tb[__nla_type(T_ctx_my_addr)]; |
| 205 | adm_ctx.peer_addr = nested_attr_tb[__nla_type(T_ctx_peer_addr)]; |
| 206 | if ((adm_ctx.my_addr && |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 207 | nla_len(adm_ctx.my_addr) > sizeof(adm_ctx.connection->my_addr)) || |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 208 | (adm_ctx.peer_addr && |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 209 | nla_len(adm_ctx.peer_addr) > sizeof(adm_ctx.connection->peer_addr))) { |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 210 | err = -EINVAL; |
| 211 | goto fail; |
| 212 | } |
| 213 | } |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 214 | |
| 215 | adm_ctx.minor = d_in->minor; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 216 | adm_ctx.device = minor_to_device(d_in->minor); |
Andreas Gruenbacher | 4bc7604 | 2011-06-13 14:27:45 +0200 | [diff] [blame] | 217 | if (adm_ctx.resource_name) { |
| 218 | adm_ctx.resource = drbd_find_resource(adm_ctx.resource_name); |
| 219 | if (adm_ctx.resource) { |
| 220 | adm_ctx.connection = first_connection(adm_ctx.resource); |
| 221 | kref_get(&adm_ctx.connection->kref); |
| 222 | } |
| 223 | } |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 224 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 225 | if (!adm_ctx.device && (flags & DRBD_ADM_NEED_MINOR)) { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 226 | drbd_msg_put_info("unknown minor"); |
| 227 | return ERR_MINOR_INVALID; |
| 228 | } |
Andreas Gruenbacher | 4bc7604 | 2011-06-13 14:27:45 +0200 | [diff] [blame] | 229 | if (!adm_ctx.resource && (flags & DRBD_ADM_NEED_RESOURCE)) { |
Andreas Gruenbacher | 44e52cf | 2011-06-14 16:07:32 +0200 | [diff] [blame] | 230 | drbd_msg_put_info("unknown resource"); |
Andreas Gruenbacher | a10f6b8 | 2011-06-09 01:26:16 +0200 | [diff] [blame] | 231 | if (adm_ctx.resource_name) |
| 232 | return ERR_RES_NOT_KNOWN; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 233 | return ERR_INVALID_REQUEST; |
| 234 | } |
| 235 | |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 236 | if (flags & DRBD_ADM_NEED_CONNECTION) { |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 237 | if (adm_ctx.connection && !(flags & DRBD_ADM_NEED_RESOURCE)) { |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 238 | drbd_msg_put_info("no resource name expected"); |
| 239 | return ERR_INVALID_REQUEST; |
| 240 | } |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 241 | if (adm_ctx.device) { |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 242 | drbd_msg_put_info("no minor number expected"); |
| 243 | return ERR_INVALID_REQUEST; |
| 244 | } |
| 245 | if (adm_ctx.my_addr && adm_ctx.peer_addr) |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 246 | adm_ctx.connection = conn_get_by_addrs(nla_data(adm_ctx.my_addr), |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 247 | nla_len(adm_ctx.my_addr), |
| 248 | nla_data(adm_ctx.peer_addr), |
| 249 | nla_len(adm_ctx.peer_addr)); |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 250 | if (!adm_ctx.connection) { |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 251 | drbd_msg_put_info("unknown connection"); |
| 252 | return ERR_INVALID_REQUEST; |
| 253 | } |
| 254 | } |
| 255 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 256 | /* some more paranoia, if the request was over-determined */ |
Andreas Gruenbacher | 4bc7604 | 2011-06-13 14:27:45 +0200 | [diff] [blame] | 257 | if (adm_ctx.device && adm_ctx.resource && |
| 258 | adm_ctx.device->resource != adm_ctx.resource) { |
| 259 | pr_warning("request: minor=%u, resource=%s; but that minor belongs to resource %s\n", |
| 260 | adm_ctx.minor, adm_ctx.resource->name, |
Andreas Gruenbacher | d8628a8 | 2011-06-09 01:38:00 +0200 | [diff] [blame] | 261 | adm_ctx.device->resource->name); |
Andreas Gruenbacher | 44e52cf | 2011-06-14 16:07:32 +0200 | [diff] [blame] | 262 | drbd_msg_put_info("minor exists in different resource"); |
Lars Ellenberg | 527f4b2 | 2011-03-14 13:58:03 +0100 | [diff] [blame] | 263 | return ERR_INVALID_REQUEST; |
| 264 | } |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 265 | if (adm_ctx.device && |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 266 | adm_ctx.volume != VOLUME_UNSPECIFIED && |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 267 | adm_ctx.volume != adm_ctx.device->vnr) { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 268 | pr_warning("request: minor=%u, volume=%u; but that minor is volume %u in %s\n", |
| 269 | adm_ctx.minor, adm_ctx.volume, |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 270 | adm_ctx.device->vnr, |
Andreas Gruenbacher | d8628a8 | 2011-06-09 01:38:00 +0200 | [diff] [blame] | 271 | adm_ctx.device->resource->name); |
Lars Ellenberg | 527f4b2 | 2011-03-14 13:58:03 +0100 | [diff] [blame] | 272 | drbd_msg_put_info("minor exists as different volume"); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 273 | return ERR_INVALID_REQUEST; |
| 274 | } |
Philipp Reisner | 0ace9df | 2011-04-24 10:53:19 +0200 | [diff] [blame] | 275 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 276 | return NO_ERROR; |
| 277 | |
| 278 | fail: |
| 279 | nlmsg_free(adm_ctx.reply_skb); |
| 280 | adm_ctx.reply_skb = NULL; |
Andreas Gruenbacher | 1e2a255 | 2011-05-24 14:17:08 +0200 | [diff] [blame] | 281 | return err; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 282 | } |
| 283 | |
| 284 | static int drbd_adm_finish(struct genl_info *info, int retcode) |
| 285 | { |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 286 | if (adm_ctx.connection) { |
Andreas Gruenbacher | 05a10ec | 2011-06-07 22:54:17 +0200 | [diff] [blame] | 287 | kref_put(&adm_ctx.connection->kref, drbd_destroy_connection); |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 288 | adm_ctx.connection = NULL; |
Philipp Reisner | 0ace9df | 2011-04-24 10:53:19 +0200 | [diff] [blame] | 289 | } |
Andreas Gruenbacher | 4bc7604 | 2011-06-13 14:27:45 +0200 | [diff] [blame] | 290 | if (adm_ctx.resource) { |
| 291 | kref_put(&adm_ctx.resource->kref, drbd_destroy_resource); |
| 292 | adm_ctx.resource = NULL; |
| 293 | } |
Philipp Reisner | 0ace9df | 2011-04-24 10:53:19 +0200 | [diff] [blame] | 294 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 295 | if (!adm_ctx.reply_skb) |
| 296 | return -ENOMEM; |
| 297 | |
| 298 | adm_ctx.reply_dh->ret_code = retcode; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 299 | drbd_adm_send_reply(adm_ctx.reply_skb, info); |
| 300 | return 0; |
| 301 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 302 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 303 | static void setup_khelper_env(struct drbd_connection *connection, char **envp) |
Philipp Reisner | 6b75dce | 2011-03-16 17:39:12 +0100 | [diff] [blame] | 304 | { |
| 305 | char *afs; |
| 306 | |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 307 | /* FIXME: A future version will not allow this case. */ |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 308 | if (connection->my_addr_len == 0 || connection->peer_addr_len == 0) |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 309 | return; |
| 310 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 311 | switch (((struct sockaddr *)&connection->peer_addr)->sa_family) { |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 312 | case AF_INET6: |
| 313 | afs = "ipv6"; |
| 314 | snprintf(envp[4], 60, "DRBD_PEER_ADDRESS=%pI6", |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 315 | &((struct sockaddr_in6 *)&connection->peer_addr)->sin6_addr); |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 316 | break; |
| 317 | case AF_INET: |
| 318 | afs = "ipv4"; |
| 319 | snprintf(envp[4], 60, "DRBD_PEER_ADDRESS=%pI4", |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 320 | &((struct sockaddr_in *)&connection->peer_addr)->sin_addr); |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 321 | break; |
| 322 | default: |
| 323 | afs = "ssocks"; |
| 324 | snprintf(envp[4], 60, "DRBD_PEER_ADDRESS=%pI4", |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 325 | &((struct sockaddr_in *)&connection->peer_addr)->sin_addr); |
Philipp Reisner | 6b75dce | 2011-03-16 17:39:12 +0100 | [diff] [blame] | 326 | } |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 327 | snprintf(envp[3], 20, "DRBD_PEER_AF=%s", afs); |
Philipp Reisner | 6b75dce | 2011-03-16 17:39:12 +0100 | [diff] [blame] | 328 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 329 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 330 | int drbd_khelper(struct drbd_device *device, char *cmd) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 331 | { |
| 332 | char *envp[] = { "HOME=/", |
| 333 | "TERM=linux", |
| 334 | "PATH=/sbin:/usr/sbin:/bin:/usr/bin", |
Philipp Reisner | 6b75dce | 2011-03-16 17:39:12 +0100 | [diff] [blame] | 335 | (char[20]) { }, /* address family */ |
| 336 | (char[60]) { }, /* address */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 337 | NULL }; |
Philipp Reisner | 6b75dce | 2011-03-16 17:39:12 +0100 | [diff] [blame] | 338 | char mb[12]; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 339 | char *argv[] = {usermode_helper, cmd, mb, NULL }; |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 340 | struct drbd_connection *connection = first_peer_device(device)->connection; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 341 | struct sib_info sib; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 342 | int ret; |
| 343 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 344 | if (current == connection->worker.task) |
| 345 | set_bit(CALLBACK_PENDING, &connection->flags); |
Lars Ellenberg | c2ba686 | 2012-06-14 15:14:06 +0200 | [diff] [blame] | 346 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 347 | snprintf(mb, 12, "minor-%d", device_to_minor(device)); |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 348 | setup_khelper_env(connection, envp); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 349 | |
Lars Ellenberg | 1090c05 | 2010-07-19 17:41:04 +0200 | [diff] [blame] | 350 | /* The helper may take some time. |
| 351 | * write out any unsynced meta data changes now */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 352 | drbd_md_sync(device); |
Lars Ellenberg | 1090c05 | 2010-07-19 17:41:04 +0200 | [diff] [blame] | 353 | |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 354 | dev_info(DEV, "helper command: %s %s %s\n", usermode_helper, cmd, mb); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 355 | sib.sib_reason = SIB_HELPER_PRE; |
| 356 | sib.helper_name = cmd; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 357 | drbd_bcast_event(device, &sib); |
Oleg Nesterov | 70834d3 | 2012-03-23 15:02:46 -0700 | [diff] [blame] | 358 | ret = call_usermodehelper(usermode_helper, argv, envp, UMH_WAIT_PROC); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 359 | if (ret) |
| 360 | dev_warn(DEV, "helper command: %s %s %s exit code %u (0x%x)\n", |
| 361 | usermode_helper, cmd, mb, |
| 362 | (ret >> 8) & 0xff, ret); |
| 363 | else |
| 364 | dev_info(DEV, "helper command: %s %s %s exit code %u (0x%x)\n", |
| 365 | usermode_helper, cmd, mb, |
| 366 | (ret >> 8) & 0xff, ret); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 367 | sib.sib_reason = SIB_HELPER_POST; |
| 368 | sib.helper_exit_code = ret; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 369 | drbd_bcast_event(device, &sib); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 370 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 371 | if (current == connection->worker.task) |
| 372 | clear_bit(CALLBACK_PENDING, &connection->flags); |
Lars Ellenberg | c2ba686 | 2012-06-14 15:14:06 +0200 | [diff] [blame] | 373 | |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 374 | if (ret < 0) /* Ignore any ERRNOs we got. */ |
| 375 | ret = 0; |
| 376 | |
| 377 | return ret; |
| 378 | } |
| 379 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 380 | static int conn_khelper(struct drbd_connection *connection, char *cmd) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 381 | { |
Philipp Reisner | 6b75dce | 2011-03-16 17:39:12 +0100 | [diff] [blame] | 382 | char *envp[] = { "HOME=/", |
| 383 | "TERM=linux", |
| 384 | "PATH=/sbin:/usr/sbin:/bin:/usr/bin", |
| 385 | (char[20]) { }, /* address family */ |
| 386 | (char[60]) { }, /* address */ |
| 387 | NULL }; |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 388 | char *resource_name = connection->resource->name; |
| 389 | char *argv[] = {usermode_helper, cmd, resource_name, NULL }; |
Philipp Reisner | 6b75dce | 2011-03-16 17:39:12 +0100 | [diff] [blame] | 390 | int ret; |
| 391 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 392 | setup_khelper_env(connection, envp); |
| 393 | conn_md_sync(connection); |
Philipp Reisner | 6b75dce | 2011-03-16 17:39:12 +0100 | [diff] [blame] | 394 | |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 395 | conn_info(connection, "helper command: %s %s %s\n", usermode_helper, cmd, resource_name); |
Philipp Reisner | 6b75dce | 2011-03-16 17:39:12 +0100 | [diff] [blame] | 396 | /* TODO: conn_bcast_event() ?? */ |
| 397 | |
Philipp Reisner | 9868365 | 2012-11-09 14:18:43 +0100 | [diff] [blame] | 398 | ret = call_usermodehelper(usermode_helper, argv, envp, UMH_WAIT_PROC); |
Philipp Reisner | 6b75dce | 2011-03-16 17:39:12 +0100 | [diff] [blame] | 399 | if (ret) |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 400 | conn_warn(connection, "helper command: %s %s %s exit code %u (0x%x)\n", |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 401 | usermode_helper, cmd, resource_name, |
Philipp Reisner | 6b75dce | 2011-03-16 17:39:12 +0100 | [diff] [blame] | 402 | (ret >> 8) & 0xff, ret); |
| 403 | else |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 404 | conn_info(connection, "helper command: %s %s %s exit code %u (0x%x)\n", |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 405 | usermode_helper, cmd, resource_name, |
Philipp Reisner | 6b75dce | 2011-03-16 17:39:12 +0100 | [diff] [blame] | 406 | (ret >> 8) & 0xff, ret); |
| 407 | /* TODO: conn_bcast_event() ?? */ |
| 408 | |
| 409 | if (ret < 0) /* Ignore any ERRNOs we got. */ |
| 410 | ret = 0; |
| 411 | |
| 412 | return ret; |
| 413 | } |
| 414 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 415 | static enum drbd_fencing_p highest_fencing_policy(struct drbd_connection *connection) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 416 | { |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 417 | enum drbd_fencing_p fp = FP_NOT_AVAIL; |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 418 | struct drbd_peer_device *peer_device; |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 419 | int vnr; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 420 | |
Philipp Reisner | 695d08f | 2011-04-11 22:53:32 -0700 | [diff] [blame] | 421 | rcu_read_lock(); |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 422 | idr_for_each_entry(&connection->peer_devices, peer_device, vnr) { |
| 423 | struct drbd_device *device = peer_device->device; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 424 | if (get_ldev_if_state(device, D_CONSISTENT)) { |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 425 | struct disk_conf *disk_conf = |
| 426 | rcu_dereference(peer_device->device->ldev->disk_conf); |
| 427 | fp = max_t(enum drbd_fencing_p, fp, disk_conf->fencing); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 428 | put_ldev(device); |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 429 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 430 | } |
Philipp Reisner | 695d08f | 2011-04-11 22:53:32 -0700 | [diff] [blame] | 431 | rcu_read_unlock(); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 432 | |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 433 | return fp; |
| 434 | } |
| 435 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 436 | bool conn_try_outdate_peer(struct drbd_connection *connection) |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 437 | { |
Philipp Reisner | 28e448b | 2013-06-25 16:50:06 +0200 | [diff] [blame] | 438 | unsigned int connect_cnt; |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 439 | union drbd_state mask = { }; |
| 440 | union drbd_state val = { }; |
| 441 | enum drbd_fencing_p fp; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 442 | char *ex_to_string; |
| 443 | int r; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 444 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 445 | if (connection->cstate >= C_WF_REPORT_PARAMS) { |
| 446 | conn_err(connection, "Expected cstate < C_WF_REPORT_PARAMS\n"); |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 447 | return false; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 448 | } |
| 449 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 450 | spin_lock_irq(&connection->req_lock); |
| 451 | connect_cnt = connection->connect_cnt; |
| 452 | spin_unlock_irq(&connection->req_lock); |
Philipp Reisner | 28e448b | 2013-06-25 16:50:06 +0200 | [diff] [blame] | 453 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 454 | fp = highest_fencing_policy(connection); |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 455 | switch (fp) { |
| 456 | case FP_NOT_AVAIL: |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 457 | conn_warn(connection, "Not fencing peer, I'm not even Consistent myself.\n"); |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 458 | goto out; |
| 459 | case FP_DONT_CARE: |
| 460 | return true; |
| 461 | default: ; |
| 462 | } |
| 463 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 464 | r = conn_khelper(connection, "fence-peer"); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 465 | |
| 466 | switch ((r>>8) & 0xff) { |
| 467 | case 3: /* peer is inconsistent */ |
| 468 | ex_to_string = "peer is inconsistent or worse"; |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 469 | mask.pdsk = D_MASK; |
| 470 | val.pdsk = D_INCONSISTENT; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 471 | break; |
| 472 | case 4: /* peer got outdated, or was already outdated */ |
| 473 | ex_to_string = "peer was fenced"; |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 474 | mask.pdsk = D_MASK; |
| 475 | val.pdsk = D_OUTDATED; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 476 | break; |
| 477 | case 5: /* peer was down */ |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 478 | if (conn_highest_disk(connection) == D_UP_TO_DATE) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 479 | /* we will(have) create(d) a new UUID anyways... */ |
| 480 | ex_to_string = "peer is unreachable, assumed to be dead"; |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 481 | mask.pdsk = D_MASK; |
| 482 | val.pdsk = D_OUTDATED; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 483 | } else { |
| 484 | ex_to_string = "peer unreachable, doing nothing since disk != UpToDate"; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 485 | } |
| 486 | break; |
| 487 | case 6: /* Peer is primary, voluntarily outdate myself. |
| 488 | * This is useful when an unconnected R_SECONDARY is asked to |
| 489 | * become R_PRIMARY, but finds the other peer being active. */ |
| 490 | ex_to_string = "peer is active"; |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 491 | conn_warn(connection, "Peer is primary, outdating myself.\n"); |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 492 | mask.disk = D_MASK; |
| 493 | val.disk = D_OUTDATED; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 494 | break; |
| 495 | case 7: |
| 496 | if (fp != FP_STONITH) |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 497 | conn_err(connection, "fence-peer() = 7 && fencing != Stonith !!!\n"); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 498 | ex_to_string = "peer was stonithed"; |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 499 | mask.pdsk = D_MASK; |
| 500 | val.pdsk = D_OUTDATED; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 501 | break; |
| 502 | default: |
| 503 | /* The script is broken ... */ |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 504 | conn_err(connection, "fence-peer helper broken, returned %d\n", (r>>8)&0xff); |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 505 | return false; /* Eventually leave IO frozen */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 506 | } |
| 507 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 508 | conn_info(connection, "fence-peer helper returned %d (%s)\n", |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 509 | (r>>8) & 0xff, ex_to_string); |
Philipp Reisner | fb22c40 | 2010-09-08 23:20:21 +0200 | [diff] [blame] | 510 | |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 511 | out: |
Philipp Reisner | fb22c40 | 2010-09-08 23:20:21 +0200 | [diff] [blame] | 512 | |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 513 | /* Not using |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 514 | conn_request_state(connection, mask, val, CS_VERBOSE); |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 515 | here, because we might were able to re-establish the connection in the |
| 516 | meantime. */ |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 517 | spin_lock_irq(&connection->req_lock); |
| 518 | if (connection->cstate < C_WF_REPORT_PARAMS && !test_bit(STATE_SENT, &connection->flags)) { |
| 519 | if (connection->connect_cnt != connect_cnt) |
Philipp Reisner | 28e448b | 2013-06-25 16:50:06 +0200 | [diff] [blame] | 520 | /* In case the connection was established and droped |
| 521 | while the fence-peer handler was running, ignore it */ |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 522 | conn_info(connection, "Ignoring fence-peer exit code\n"); |
Philipp Reisner | 28e448b | 2013-06-25 16:50:06 +0200 | [diff] [blame] | 523 | else |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 524 | _conn_request_state(connection, mask, val, CS_VERBOSE); |
Philipp Reisner | 28e448b | 2013-06-25 16:50:06 +0200 | [diff] [blame] | 525 | } |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 526 | spin_unlock_irq(&connection->req_lock); |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 527 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 528 | return conn_highest_pdsk(connection) <= D_OUTDATED; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 529 | } |
| 530 | |
Philipp Reisner | 87f7be4 | 2010-06-11 13:56:33 +0200 | [diff] [blame] | 531 | static int _try_outdate_peer_async(void *data) |
| 532 | { |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 533 | struct drbd_connection *connection = (struct drbd_connection *)data; |
Philipp Reisner | 87f7be4 | 2010-06-11 13:56:33 +0200 | [diff] [blame] | 534 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 535 | conn_try_outdate_peer(connection); |
Philipp Reisner | 21423fa | 2011-05-17 14:19:41 +0200 | [diff] [blame] | 536 | |
Andreas Gruenbacher | 05a10ec | 2011-06-07 22:54:17 +0200 | [diff] [blame] | 537 | kref_put(&connection->kref, drbd_destroy_connection); |
Philipp Reisner | 87f7be4 | 2010-06-11 13:56:33 +0200 | [diff] [blame] | 538 | return 0; |
| 539 | } |
| 540 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 541 | void conn_try_outdate_peer_async(struct drbd_connection *connection) |
Philipp Reisner | 87f7be4 | 2010-06-11 13:56:33 +0200 | [diff] [blame] | 542 | { |
| 543 | struct task_struct *opa; |
| 544 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 545 | kref_get(&connection->kref); |
| 546 | opa = kthread_run(_try_outdate_peer_async, connection, "drbd_async_h"); |
Philipp Reisner | 9dc9fbb | 2011-04-22 15:23:32 +0200 | [diff] [blame] | 547 | if (IS_ERR(opa)) { |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 548 | conn_err(connection, "out of mem, failed to invoke fence-peer helper\n"); |
Andreas Gruenbacher | 05a10ec | 2011-06-07 22:54:17 +0200 | [diff] [blame] | 549 | kref_put(&connection->kref, drbd_destroy_connection); |
Philipp Reisner | 9dc9fbb | 2011-04-22 15:23:32 +0200 | [diff] [blame] | 550 | } |
Philipp Reisner | 87f7be4 | 2010-06-11 13:56:33 +0200 | [diff] [blame] | 551 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 552 | |
Andreas Gruenbacher | bf885f8 | 2010-12-08 00:39:32 +0100 | [diff] [blame] | 553 | enum drbd_state_rv |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 554 | drbd_set_role(struct drbd_device *device, enum drbd_role new_role, int force) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 555 | { |
| 556 | const int max_tries = 4; |
Andreas Gruenbacher | bf885f8 | 2010-12-08 00:39:32 +0100 | [diff] [blame] | 557 | enum drbd_state_rv rv = SS_UNKNOWN_ERROR; |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 558 | struct net_conf *nc; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 559 | int try = 0; |
| 560 | int forced = 0; |
| 561 | union drbd_state mask, val; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 562 | |
| 563 | if (new_role == R_PRIMARY) |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 564 | request_ping(first_peer_device(device)->connection); /* Detect a dead peer ASAP */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 565 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 566 | mutex_lock(device->state_mutex); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 567 | |
| 568 | mask.i = 0; mask.role = R_MASK; |
| 569 | val.i = 0; val.role = new_role; |
| 570 | |
| 571 | while (try++ < max_tries) { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 572 | rv = _drbd_request_state(device, mask, val, CS_WAIT_COMPLETE); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 573 | |
| 574 | /* in case we first succeeded to outdate, |
| 575 | * but now suddenly could establish a connection */ |
Andreas Gruenbacher | bf885f8 | 2010-12-08 00:39:32 +0100 | [diff] [blame] | 576 | if (rv == SS_CW_FAILED_BY_PEER && mask.pdsk != 0) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 577 | val.pdsk = 0; |
| 578 | mask.pdsk = 0; |
| 579 | continue; |
| 580 | } |
| 581 | |
Andreas Gruenbacher | bf885f8 | 2010-12-08 00:39:32 +0100 | [diff] [blame] | 582 | if (rv == SS_NO_UP_TO_DATE_DISK && force && |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 583 | (device->state.disk < D_UP_TO_DATE && |
| 584 | device->state.disk >= D_INCONSISTENT)) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 585 | mask.disk = D_MASK; |
| 586 | val.disk = D_UP_TO_DATE; |
| 587 | forced = 1; |
| 588 | continue; |
| 589 | } |
| 590 | |
Andreas Gruenbacher | bf885f8 | 2010-12-08 00:39:32 +0100 | [diff] [blame] | 591 | if (rv == SS_NO_UP_TO_DATE_DISK && |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 592 | device->state.disk == D_CONSISTENT && mask.pdsk == 0) { |
| 593 | D_ASSERT(device->state.pdsk == D_UNKNOWN); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 594 | |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 595 | if (conn_try_outdate_peer(first_peer_device(device)->connection)) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 596 | val.disk = D_UP_TO_DATE; |
| 597 | mask.disk = D_MASK; |
| 598 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 599 | continue; |
| 600 | } |
| 601 | |
Andreas Gruenbacher | bf885f8 | 2010-12-08 00:39:32 +0100 | [diff] [blame] | 602 | if (rv == SS_NOTHING_TO_DO) |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 603 | goto out; |
Andreas Gruenbacher | bf885f8 | 2010-12-08 00:39:32 +0100 | [diff] [blame] | 604 | if (rv == SS_PRIMARY_NOP && mask.pdsk == 0) { |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 605 | if (!conn_try_outdate_peer(first_peer_device(device)->connection) && force) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 606 | dev_warn(DEV, "Forced into split brain situation!\n"); |
Philipp Reisner | cb70345 | 2011-03-24 11:03:07 +0100 | [diff] [blame] | 607 | mask.pdsk = D_MASK; |
| 608 | val.pdsk = D_OUTDATED; |
| 609 | |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 610 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 611 | continue; |
| 612 | } |
Andreas Gruenbacher | bf885f8 | 2010-12-08 00:39:32 +0100 | [diff] [blame] | 613 | if (rv == SS_TWO_PRIMARIES) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 614 | /* Maybe the peer is detected as dead very soon... |
| 615 | retry at most once more in this case. */ |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 616 | int timeo; |
| 617 | rcu_read_lock(); |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 618 | nc = rcu_dereference(first_peer_device(device)->connection->net_conf); |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 619 | timeo = nc ? (nc->ping_timeo + 1) * HZ / 10 : 1; |
| 620 | rcu_read_unlock(); |
| 621 | schedule_timeout_interruptible(timeo); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 622 | if (try < max_tries) |
| 623 | try = max_tries - 1; |
| 624 | continue; |
| 625 | } |
Andreas Gruenbacher | bf885f8 | 2010-12-08 00:39:32 +0100 | [diff] [blame] | 626 | if (rv < SS_SUCCESS) { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 627 | rv = _drbd_request_state(device, mask, val, |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 628 | CS_VERBOSE + CS_WAIT_COMPLETE); |
Andreas Gruenbacher | bf885f8 | 2010-12-08 00:39:32 +0100 | [diff] [blame] | 629 | if (rv < SS_SUCCESS) |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 630 | goto out; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 631 | } |
| 632 | break; |
| 633 | } |
| 634 | |
Andreas Gruenbacher | bf885f8 | 2010-12-08 00:39:32 +0100 | [diff] [blame] | 635 | if (rv < SS_SUCCESS) |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 636 | goto out; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 637 | |
| 638 | if (forced) |
| 639 | dev_warn(DEV, "Forced to consider local data as UpToDate!\n"); |
| 640 | |
| 641 | /* Wait until nothing is on the fly :) */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 642 | wait_event(device->misc_wait, atomic_read(&device->ap_pending_cnt) == 0); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 643 | |
Lars Ellenberg | b6dd1a8 | 2011-11-28 15:04:49 +0100 | [diff] [blame] | 644 | /* FIXME also wait for all pending P_BARRIER_ACK? */ |
| 645 | |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 646 | if (new_role == R_SECONDARY) { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 647 | set_disk_ro(device->vdisk, true); |
| 648 | if (get_ldev(device)) { |
| 649 | device->ldev->md.uuid[UI_CURRENT] &= ~(u64)1; |
| 650 | put_ldev(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 651 | } |
| 652 | } else { |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 653 | mutex_lock(&first_peer_device(device)->connection->conf_update); |
| 654 | nc = first_peer_device(device)->connection->net_conf; |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 655 | if (nc) |
Andreas Gruenbacher | 6139f60 | 2011-05-06 20:00:02 +0200 | [diff] [blame] | 656 | nc->discard_my_data = 0; /* without copy; single bit op is atomic */ |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 657 | mutex_unlock(&first_peer_device(device)->connection->conf_update); |
Philipp Reisner | 91fd4da | 2011-04-20 17:47:29 +0200 | [diff] [blame] | 658 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 659 | set_disk_ro(device->vdisk, false); |
| 660 | if (get_ldev(device)) { |
| 661 | if (((device->state.conn < C_CONNECTED || |
| 662 | device->state.pdsk <= D_FAILED) |
| 663 | && device->ldev->md.uuid[UI_BITMAP] == 0) || forced) |
| 664 | drbd_uuid_new_current(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 665 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 666 | device->ldev->md.uuid[UI_CURRENT] |= (u64)1; |
| 667 | put_ldev(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 668 | } |
| 669 | } |
| 670 | |
Lars Ellenberg | 19f843a | 2010-12-15 08:59:11 +0100 | [diff] [blame] | 671 | /* writeout of activity log covered areas of the bitmap |
| 672 | * to stable storage done in after state change already */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 673 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 674 | if (device->state.conn >= C_WF_REPORT_PARAMS) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 675 | /* if this was forced, we should consider sync */ |
| 676 | if (forced) |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 677 | drbd_send_uuids(device); |
| 678 | drbd_send_current_state(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 679 | } |
| 680 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 681 | drbd_md_sync(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 682 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 683 | kobject_uevent(&disk_to_dev(device->vdisk)->kobj, KOBJ_CHANGE); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 684 | out: |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 685 | mutex_unlock(device->state_mutex); |
Andreas Gruenbacher | bf885f8 | 2010-12-08 00:39:32 +0100 | [diff] [blame] | 686 | return rv; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 687 | } |
| 688 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 689 | static const char *from_attrs_err_to_txt(int err) |
Lars Ellenberg | ef50a3e | 2010-09-01 14:39:30 +0200 | [diff] [blame] | 690 | { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 691 | return err == -ENOMSG ? "required attribute missing" : |
| 692 | err == -EOPNOTSUPP ? "unknown mandatory attribute" : |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 693 | err == -EEXIST ? "can not change invariant setting" : |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 694 | "invalid attribute value"; |
Lars Ellenberg | ef50a3e | 2010-09-01 14:39:30 +0200 | [diff] [blame] | 695 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 696 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 697 | int drbd_adm_set_role(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 698 | { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 699 | struct set_role_parms parms; |
| 700 | int err; |
| 701 | enum drbd_ret_code retcode; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 702 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 703 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR); |
| 704 | if (!adm_ctx.reply_skb) |
| 705 | return retcode; |
| 706 | if (retcode != NO_ERROR) |
| 707 | goto out; |
| 708 | |
| 709 | memset(&parms, 0, sizeof(parms)); |
| 710 | if (info->attrs[DRBD_NLA_SET_ROLE_PARMS]) { |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 711 | err = set_role_parms_from_attrs(&parms, info); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 712 | if (err) { |
| 713 | retcode = ERR_MANDATORY_TAG; |
| 714 | drbd_msg_put_info(from_attrs_err_to_txt(err)); |
| 715 | goto out; |
| 716 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 717 | } |
| 718 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 719 | if (info->genlhdr->cmd == DRBD_ADM_PRIMARY) |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 720 | retcode = drbd_set_role(adm_ctx.device, R_PRIMARY, parms.assume_uptodate); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 721 | else |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 722 | retcode = drbd_set_role(adm_ctx.device, R_SECONDARY, 0); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 723 | out: |
| 724 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 725 | return 0; |
| 726 | } |
| 727 | |
Lars Ellenberg | ae8bf31 | 2013-03-19 18:16:43 +0100 | [diff] [blame] | 728 | /* Initializes the md.*_offset members, so we are able to find |
| 729 | * the on disk meta data. |
| 730 | * |
| 731 | * We currently have two possible layouts: |
| 732 | * external: |
| 733 | * |----------- md_size_sect ------------------| |
| 734 | * [ 4k superblock ][ activity log ][ Bitmap ] |
| 735 | * | al_offset == 8 | |
| 736 | * | bm_offset = al_offset + X | |
| 737 | * ==> bitmap sectors = md_size_sect - bm_offset |
| 738 | * |
| 739 | * internal: |
| 740 | * |----------- md_size_sect ------------------| |
| 741 | * [data.....][ Bitmap ][ activity log ][ 4k superblock ] |
| 742 | * | al_offset < 0 | |
| 743 | * | bm_offset = al_offset - Y | |
| 744 | * ==> bitmap sectors = Y = al_offset - bm_offset |
| 745 | * |
| 746 | * Activity log size used to be fixed 32kB, |
| 747 | * but is about to become configurable. |
| 748 | */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 749 | static void drbd_md_set_sector_offsets(struct drbd_device *device, |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 750 | struct drbd_backing_dev *bdev) |
| 751 | { |
| 752 | sector_t md_size_sect = 0; |
Lars Ellenberg | c04ccaa | 2013-03-19 18:16:47 +0100 | [diff] [blame] | 753 | unsigned int al_size_sect = bdev->md.al_size_4k * 8; |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 754 | |
Lars Ellenberg | 3a4d4eb | 2013-03-19 18:16:44 +0100 | [diff] [blame] | 755 | bdev->md.md_offset = drbd_md_ss(bdev); |
| 756 | |
Lars Ellenberg | 68e41a4 | 2013-03-19 18:16:45 +0100 | [diff] [blame] | 757 | switch (bdev->md.meta_dev_idx) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 758 | default: |
| 759 | /* v07 style fixed size indexed meta data */ |
Lars Ellenberg | ae8bf31 | 2013-03-19 18:16:43 +0100 | [diff] [blame] | 760 | bdev->md.md_size_sect = MD_128MB_SECT; |
Lars Ellenberg | ae8bf31 | 2013-03-19 18:16:43 +0100 | [diff] [blame] | 761 | bdev->md.al_offset = MD_4kB_SECT; |
| 762 | bdev->md.bm_offset = MD_4kB_SECT + al_size_sect; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 763 | break; |
| 764 | case DRBD_MD_INDEX_FLEX_EXT: |
| 765 | /* just occupy the full device; unit: sectors */ |
| 766 | bdev->md.md_size_sect = drbd_get_capacity(bdev->md_bdev); |
Lars Ellenberg | ae8bf31 | 2013-03-19 18:16:43 +0100 | [diff] [blame] | 767 | bdev->md.al_offset = MD_4kB_SECT; |
| 768 | bdev->md.bm_offset = MD_4kB_SECT + al_size_sect; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 769 | break; |
| 770 | case DRBD_MD_INDEX_INTERNAL: |
| 771 | case DRBD_MD_INDEX_FLEX_INT: |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 772 | /* al size is still fixed */ |
Lars Ellenberg | ae8bf31 | 2013-03-19 18:16:43 +0100 | [diff] [blame] | 773 | bdev->md.al_offset = -al_size_sect; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 774 | /* we need (slightly less than) ~ this much bitmap sectors: */ |
| 775 | md_size_sect = drbd_get_capacity(bdev->backing_bdev); |
| 776 | md_size_sect = ALIGN(md_size_sect, BM_SECT_PER_EXT); |
| 777 | md_size_sect = BM_SECT_TO_EXT(md_size_sect); |
| 778 | md_size_sect = ALIGN(md_size_sect, 8); |
| 779 | |
| 780 | /* plus the "drbd meta data super block", |
| 781 | * and the activity log; */ |
Lars Ellenberg | ae8bf31 | 2013-03-19 18:16:43 +0100 | [diff] [blame] | 782 | md_size_sect += MD_4kB_SECT + al_size_sect; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 783 | |
| 784 | bdev->md.md_size_sect = md_size_sect; |
| 785 | /* bitmap offset is adjusted by 'super' block size */ |
Lars Ellenberg | ae8bf31 | 2013-03-19 18:16:43 +0100 | [diff] [blame] | 786 | bdev->md.bm_offset = -md_size_sect + MD_4kB_SECT; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 787 | break; |
| 788 | } |
| 789 | } |
| 790 | |
Lars Ellenberg | 4b0715f | 2010-12-14 15:13:04 +0100 | [diff] [blame] | 791 | /* input size is expected to be in KB */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 792 | char *ppsize(char *buf, unsigned long long size) |
| 793 | { |
Lars Ellenberg | 4b0715f | 2010-12-14 15:13:04 +0100 | [diff] [blame] | 794 | /* Needs 9 bytes at max including trailing NUL: |
| 795 | * -1ULL ==> "16384 EB" */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 796 | static char units[] = { 'K', 'M', 'G', 'T', 'P', 'E' }; |
| 797 | int base = 0; |
Lars Ellenberg | 4b0715f | 2010-12-14 15:13:04 +0100 | [diff] [blame] | 798 | while (size >= 10000 && base < sizeof(units)-1) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 799 | /* shift + round */ |
| 800 | size = (size >> 10) + !!(size & (1<<9)); |
| 801 | base++; |
| 802 | } |
Lars Ellenberg | 4b0715f | 2010-12-14 15:13:04 +0100 | [diff] [blame] | 803 | sprintf(buf, "%u %cB", (unsigned)size, units[base]); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 804 | |
| 805 | return buf; |
| 806 | } |
| 807 | |
| 808 | /* there is still a theoretical deadlock when called from receiver |
| 809 | * on an D_INCONSISTENT R_PRIMARY: |
| 810 | * remote READ does inc_ap_bio, receiver would need to receive answer |
| 811 | * packet from remote to dec_ap_bio again. |
| 812 | * receiver receive_sizes(), comes here, |
| 813 | * waits for ap_bio_cnt == 0. -> deadlock. |
| 814 | * but this cannot happen, actually, because: |
| 815 | * R_PRIMARY D_INCONSISTENT, and peer's disk is unreachable |
| 816 | * (not connected, or bad/no disk on peer): |
| 817 | * see drbd_fail_request_early, ap_bio_cnt is zero. |
| 818 | * R_PRIMARY D_INCONSISTENT, and C_SYNC_TARGET: |
| 819 | * peer may not initiate a resize. |
| 820 | */ |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 821 | /* Note these are not to be confused with |
| 822 | * drbd_adm_suspend_io/drbd_adm_resume_io, |
| 823 | * which are (sub) state changes triggered by admin (drbdsetup), |
| 824 | * and can be long lived. |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 825 | * This changes an device->flag, is triggered by drbd internals, |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 826 | * and should be short-lived. */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 827 | void drbd_suspend_io(struct drbd_device *device) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 828 | { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 829 | set_bit(SUSPEND_IO, &device->flags); |
| 830 | if (drbd_suspended(device)) |
Philipp Reisner | 265be2d | 2010-05-31 10:14:17 +0200 | [diff] [blame] | 831 | return; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 832 | wait_event(device->misc_wait, !atomic_read(&device->ap_bio_cnt)); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 833 | } |
| 834 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 835 | void drbd_resume_io(struct drbd_device *device) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 836 | { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 837 | clear_bit(SUSPEND_IO, &device->flags); |
| 838 | wake_up(&device->misc_wait); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 839 | } |
| 840 | |
| 841 | /** |
| 842 | * drbd_determine_dev_size() - Sets the right device size obeying all constraints |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 843 | * @device: DRBD device. |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 844 | * |
| 845 | * Returns 0 on success, negative return values indicate errors. |
| 846 | * You should call drbd_md_sync() after calling this function. |
| 847 | */ |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 848 | enum determine_dev_size |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 849 | drbd_determine_dev_size(struct drbd_device *device, enum dds_flags flags, struct resize_parms *rs) __must_hold(local) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 850 | { |
| 851 | sector_t prev_first_sect, prev_size; /* previous meta location */ |
Lars Ellenberg | cccac98 | 2013-03-19 18:16:46 +0100 | [diff] [blame] | 852 | sector_t la_size_sect, u_size; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 853 | struct drbd_md *md = &device->ldev->md; |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 854 | u32 prev_al_stripe_size_4k; |
| 855 | u32 prev_al_stripes; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 856 | sector_t size; |
| 857 | char ppb[10]; |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 858 | void *buffer; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 859 | |
| 860 | int md_moved, la_size_changed; |
Philipp Reisner | e96c963 | 2013-06-25 16:50:07 +0200 | [diff] [blame] | 861 | enum determine_dev_size rv = DS_UNCHANGED; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 862 | |
| 863 | /* race: |
| 864 | * application request passes inc_ap_bio, |
| 865 | * but then cannot get an AL-reference. |
| 866 | * this function later may wait on ap_bio_cnt == 0. -> deadlock. |
| 867 | * |
| 868 | * to avoid that: |
| 869 | * Suspend IO right here. |
| 870 | * still lock the act_log to not trigger ASSERTs there. |
| 871 | */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 872 | drbd_suspend_io(device); |
| 873 | buffer = drbd_md_get_buffer(device); /* Lock meta-data IO */ |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 874 | if (!buffer) { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 875 | drbd_resume_io(device); |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 876 | return DS_ERROR; |
| 877 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 878 | |
| 879 | /* no wait necessary anymore, actually we could assert that */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 880 | wait_event(device->al_wait, lc_try_lock(device->act_log)); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 881 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 882 | prev_first_sect = drbd_md_first_sector(device->ldev); |
| 883 | prev_size = device->ldev->md.md_size_sect; |
| 884 | la_size_sect = device->ldev->md.la_size_sect; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 885 | |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 886 | if (rs) { |
| 887 | /* rs is non NULL if we should change the AL layout only */ |
| 888 | |
| 889 | prev_al_stripes = md->al_stripes; |
| 890 | prev_al_stripe_size_4k = md->al_stripe_size_4k; |
| 891 | |
| 892 | md->al_stripes = rs->al_stripes; |
| 893 | md->al_stripe_size_4k = rs->al_stripe_size / 4; |
| 894 | md->al_size_4k = (u64)rs->al_stripes * rs->al_stripe_size / 4; |
| 895 | } |
| 896 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 897 | drbd_md_set_sector_offsets(device, device->ldev); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 898 | |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 899 | rcu_read_lock(); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 900 | u_size = rcu_dereference(device->ldev->disk_conf)->disk_size; |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 901 | rcu_read_unlock(); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 902 | size = drbd_new_dev_size(device, device->ldev, u_size, flags & DDSF_FORCED); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 903 | |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 904 | if (size < la_size_sect) { |
| 905 | if (rs && u_size == 0) { |
| 906 | /* Remove "rs &&" later. This check should always be active, but |
| 907 | right now the receiver expects the permissive behavior */ |
| 908 | dev_warn(DEV, "Implicit shrink not allowed. " |
| 909 | "Use --size=%llus for explicit shrink.\n", |
| 910 | (unsigned long long)size); |
| 911 | rv = DS_ERROR_SHRINK; |
| 912 | } |
| 913 | if (u_size > size) |
| 914 | rv = DS_ERROR_SPACE_MD; |
| 915 | if (rv != DS_UNCHANGED) |
| 916 | goto err_out; |
| 917 | } |
| 918 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 919 | if (drbd_get_capacity(device->this_bdev) != size || |
| 920 | drbd_bm_capacity(device) != size) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 921 | int err; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 922 | err = drbd_bm_resize(device, size, !(flags & DDSF_NO_RESYNC)); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 923 | if (unlikely(err)) { |
| 924 | /* currently there is only one error: ENOMEM! */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 925 | size = drbd_bm_capacity(device)>>1; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 926 | if (size == 0) { |
| 927 | dev_err(DEV, "OUT OF MEMORY! " |
| 928 | "Could not allocate bitmap!\n"); |
| 929 | } else { |
| 930 | dev_err(DEV, "BM resizing failed. " |
| 931 | "Leaving size unchanged at size = %lu KB\n", |
| 932 | (unsigned long)size); |
| 933 | } |
Philipp Reisner | e96c963 | 2013-06-25 16:50:07 +0200 | [diff] [blame] | 934 | rv = DS_ERROR; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 935 | } |
| 936 | /* racy, see comments above. */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 937 | drbd_set_my_capacity(device, size); |
| 938 | device->ldev->md.la_size_sect = size; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 939 | dev_info(DEV, "size = %s (%llu KB)\n", ppsize(ppb, size>>1), |
| 940 | (unsigned long long)size>>1); |
| 941 | } |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 942 | if (rv <= DS_ERROR) |
| 943 | goto err_out; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 944 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 945 | la_size_changed = (la_size_sect != device->ldev->md.la_size_sect); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 946 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 947 | md_moved = prev_first_sect != drbd_md_first_sector(device->ldev) |
| 948 | || prev_size != device->ldev->md.md_size_sect; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 949 | |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 950 | if (la_size_changed || md_moved || rs) { |
| 951 | u32 prev_flags; |
Andreas Gruenbacher | 24dccab | 2010-12-12 17:45:41 +0100 | [diff] [blame] | 952 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 953 | drbd_al_shrink(device); /* All extents inactive. */ |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 954 | |
| 955 | prev_flags = md->flags; |
| 956 | md->flags &= ~MDF_PRIMARY_IND; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 957 | drbd_md_write(device, buffer); |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 958 | |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 959 | dev_info(DEV, "Writing the whole bitmap, %s\n", |
| 960 | la_size_changed && md_moved ? "size changed and md moved" : |
| 961 | la_size_changed ? "size changed" : "md moved"); |
Lars Ellenberg | 20ceb2b | 2011-01-21 10:56:44 +0100 | [diff] [blame] | 962 | /* next line implicitly does drbd_suspend_io()+drbd_resume_io() */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 963 | drbd_bitmap_io(device, md_moved ? &drbd_bm_write_all : &drbd_bm_write, |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 964 | "size changed", BM_LOCKED_MASK); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 965 | drbd_initialize_al(device, buffer); |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 966 | |
| 967 | md->flags = prev_flags; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 968 | drbd_md_write(device, buffer); |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 969 | |
| 970 | if (rs) |
| 971 | dev_info(DEV, "Changed AL layout to al-stripes = %d, al-stripe-size-kB = %d\n", |
| 972 | md->al_stripes, md->al_stripe_size_4k * 4); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 973 | } |
| 974 | |
Lars Ellenberg | cccac98 | 2013-03-19 18:16:46 +0100 | [diff] [blame] | 975 | if (size > la_size_sect) |
Philipp Reisner | 57737ad | 2013-10-23 10:59:17 +0200 | [diff] [blame] | 976 | rv = la_size_sect ? DS_GREW : DS_GREW_FROM_ZERO; |
Lars Ellenberg | cccac98 | 2013-03-19 18:16:46 +0100 | [diff] [blame] | 977 | if (size < la_size_sect) |
Philipp Reisner | e96c963 | 2013-06-25 16:50:07 +0200 | [diff] [blame] | 978 | rv = DS_SHRUNK; |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 979 | |
| 980 | if (0) { |
| 981 | err_out: |
| 982 | if (rs) { |
| 983 | md->al_stripes = prev_al_stripes; |
| 984 | md->al_stripe_size_4k = prev_al_stripe_size_4k; |
| 985 | md->al_size_4k = (u64)prev_al_stripes * prev_al_stripe_size_4k; |
| 986 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 987 | drbd_md_set_sector_offsets(device, device->ldev); |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 988 | } |
| 989 | } |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 990 | lc_unlock(device->act_log); |
| 991 | wake_up(&device->al_wait); |
| 992 | drbd_md_put_buffer(device); |
| 993 | drbd_resume_io(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 994 | |
| 995 | return rv; |
| 996 | } |
| 997 | |
| 998 | sector_t |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 999 | drbd_new_dev_size(struct drbd_device *device, struct drbd_backing_dev *bdev, |
Philipp Reisner | ef5e44a | 2011-05-03 13:27:43 +0200 | [diff] [blame] | 1000 | sector_t u_size, int assume_peer_has_space) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1001 | { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1002 | sector_t p_size = device->p_size; /* partner's disk size. */ |
Lars Ellenberg | cccac98 | 2013-03-19 18:16:46 +0100 | [diff] [blame] | 1003 | sector_t la_size_sect = bdev->md.la_size_sect; /* last agreed size. */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1004 | sector_t m_size; /* my size */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1005 | sector_t size = 0; |
| 1006 | |
| 1007 | m_size = drbd_get_max_capacity(bdev); |
| 1008 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1009 | if (device->state.conn < C_CONNECTED && assume_peer_has_space) { |
Philipp Reisner | a393db6 | 2009-12-22 13:35:52 +0100 | [diff] [blame] | 1010 | dev_warn(DEV, "Resize while not connected was forced by the user!\n"); |
| 1011 | p_size = m_size; |
| 1012 | } |
| 1013 | |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1014 | if (p_size && m_size) { |
| 1015 | size = min_t(sector_t, p_size, m_size); |
| 1016 | } else { |
Lars Ellenberg | cccac98 | 2013-03-19 18:16:46 +0100 | [diff] [blame] | 1017 | if (la_size_sect) { |
| 1018 | size = la_size_sect; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1019 | if (m_size && m_size < size) |
| 1020 | size = m_size; |
| 1021 | if (p_size && p_size < size) |
| 1022 | size = p_size; |
| 1023 | } else { |
| 1024 | if (m_size) |
| 1025 | size = m_size; |
| 1026 | if (p_size) |
| 1027 | size = p_size; |
| 1028 | } |
| 1029 | } |
| 1030 | |
| 1031 | if (size == 0) |
| 1032 | dev_err(DEV, "Both nodes diskless!\n"); |
| 1033 | |
| 1034 | if (u_size) { |
| 1035 | if (u_size > size) |
| 1036 | dev_err(DEV, "Requested disk size is too big (%lu > %lu)\n", |
| 1037 | (unsigned long)u_size>>1, (unsigned long)size>>1); |
| 1038 | else |
| 1039 | size = u_size; |
| 1040 | } |
| 1041 | |
| 1042 | return size; |
| 1043 | } |
| 1044 | |
| 1045 | /** |
| 1046 | * drbd_check_al_size() - Ensures that the AL is of the right size |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1047 | * @device: DRBD device. |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1048 | * |
| 1049 | * Returns -EBUSY if current al lru is still used, -ENOMEM when allocation |
| 1050 | * failed, and 0 on success. You should call drbd_md_sync() after you called |
| 1051 | * this function. |
| 1052 | */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1053 | static int drbd_check_al_size(struct drbd_device *device, struct disk_conf *dc) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1054 | { |
| 1055 | struct lru_cache *n, *t; |
| 1056 | struct lc_element *e; |
| 1057 | unsigned int in_use; |
| 1058 | int i; |
| 1059 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1060 | if (device->act_log && |
| 1061 | device->act_log->nr_elements == dc->al_extents) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1062 | return 0; |
| 1063 | |
| 1064 | in_use = 0; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1065 | t = device->act_log; |
Lars Ellenberg | 7ad651b | 2011-02-21 13:21:03 +0100 | [diff] [blame] | 1066 | n = lc_create("act_log", drbd_al_ext_cache, AL_UPDATES_PER_TRANSACTION, |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1067 | dc->al_extents, sizeof(struct lc_element), 0); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1068 | |
| 1069 | if (n == NULL) { |
| 1070 | dev_err(DEV, "Cannot allocate act_log lru!\n"); |
| 1071 | return -ENOMEM; |
| 1072 | } |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1073 | spin_lock_irq(&device->al_lock); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1074 | if (t) { |
| 1075 | for (i = 0; i < t->nr_elements; i++) { |
| 1076 | e = lc_element_by_index(t, i); |
| 1077 | if (e->refcnt) |
| 1078 | dev_err(DEV, "refcnt(%d)==%d\n", |
| 1079 | e->lc_number, e->refcnt); |
| 1080 | in_use += e->refcnt; |
| 1081 | } |
| 1082 | } |
| 1083 | if (!in_use) |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1084 | device->act_log = n; |
| 1085 | spin_unlock_irq(&device->al_lock); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1086 | if (in_use) { |
| 1087 | dev_err(DEV, "Activity log still in use!\n"); |
| 1088 | lc_destroy(n); |
| 1089 | return -EBUSY; |
| 1090 | } else { |
| 1091 | if (t) |
| 1092 | lc_destroy(t); |
| 1093 | } |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1094 | drbd_md_mark_dirty(device); /* we changed device->act_log->nr_elemens */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1095 | return 0; |
| 1096 | } |
| 1097 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1098 | static void drbd_setup_queue_param(struct drbd_device *device, unsigned int max_bio_size) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1099 | { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1100 | struct request_queue * const q = device->rq_queue; |
Lars Ellenberg | db141b2 | 2012-06-25 19:15:58 +0200 | [diff] [blame] | 1101 | unsigned int max_hw_sectors = max_bio_size >> 9; |
| 1102 | unsigned int max_segments = 0; |
Philipp Reisner | 99432fc | 2011-05-20 16:39:13 +0200 | [diff] [blame] | 1103 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1104 | if (get_ldev_if_state(device, D_ATTACHING)) { |
| 1105 | struct request_queue * const b = device->ldev->backing_bdev->bd_disk->queue; |
Philipp Reisner | 99432fc | 2011-05-20 16:39:13 +0200 | [diff] [blame] | 1106 | |
| 1107 | max_hw_sectors = min(queue_max_hw_sectors(b), max_bio_size >> 9); |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1108 | rcu_read_lock(); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1109 | max_segments = rcu_dereference(device->ldev->disk_conf)->max_bio_bvecs; |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1110 | rcu_read_unlock(); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1111 | put_ldev(device); |
Philipp Reisner | 99432fc | 2011-05-20 16:39:13 +0200 | [diff] [blame] | 1112 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1113 | |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1114 | blk_queue_logical_block_size(q, 512); |
Lars Ellenberg | 1816a2b | 2010-11-11 15:19:07 +0100 | [diff] [blame] | 1115 | blk_queue_max_hw_sectors(q, max_hw_sectors); |
| 1116 | /* This is the workaround for "bio would need to, but cannot, be split" */ |
| 1117 | blk_queue_max_segments(q, max_segments ? max_segments : BLK_MAX_SEGMENTS); |
| 1118 | blk_queue_segment_boundary(q, PAGE_CACHE_SIZE-1); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1119 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1120 | if (get_ldev_if_state(device, D_ATTACHING)) { |
| 1121 | struct request_queue * const b = device->ldev->backing_bdev->bd_disk->queue; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1122 | |
Philipp Reisner | 99432fc | 2011-05-20 16:39:13 +0200 | [diff] [blame] | 1123 | blk_queue_stack_limits(q, b); |
| 1124 | |
| 1125 | if (q->backing_dev_info.ra_pages != b->backing_dev_info.ra_pages) { |
| 1126 | dev_info(DEV, "Adjusting my ra_pages to backing device's (%lu -> %lu)\n", |
| 1127 | q->backing_dev_info.ra_pages, |
| 1128 | b->backing_dev_info.ra_pages); |
| 1129 | q->backing_dev_info.ra_pages = b->backing_dev_info.ra_pages; |
| 1130 | } |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1131 | put_ldev(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1132 | } |
| 1133 | } |
| 1134 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1135 | void drbd_reconsider_max_bio_size(struct drbd_device *device) |
Philipp Reisner | 99432fc | 2011-05-20 16:39:13 +0200 | [diff] [blame] | 1136 | { |
Lars Ellenberg | db141b2 | 2012-06-25 19:15:58 +0200 | [diff] [blame] | 1137 | unsigned int now, new, local, peer; |
Philipp Reisner | 99432fc | 2011-05-20 16:39:13 +0200 | [diff] [blame] | 1138 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1139 | now = queue_max_hw_sectors(device->rq_queue) << 9; |
| 1140 | local = device->local_max_bio_size; /* Eventually last known value, from volatile memory */ |
| 1141 | peer = device->peer_max_bio_size; /* Eventually last known value, from meta data */ |
Philipp Reisner | 99432fc | 2011-05-20 16:39:13 +0200 | [diff] [blame] | 1142 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1143 | if (get_ldev_if_state(device, D_ATTACHING)) { |
| 1144 | local = queue_max_hw_sectors(device->ldev->backing_bdev->bd_disk->queue) << 9; |
| 1145 | device->local_max_bio_size = local; |
| 1146 | put_ldev(device); |
Philipp Reisner | 99432fc | 2011-05-20 16:39:13 +0200 | [diff] [blame] | 1147 | } |
Lars Ellenberg | db141b2 | 2012-06-25 19:15:58 +0200 | [diff] [blame] | 1148 | local = min(local, DRBD_MAX_BIO_SIZE); |
Philipp Reisner | 99432fc | 2011-05-20 16:39:13 +0200 | [diff] [blame] | 1149 | |
| 1150 | /* We may ignore peer limits if the peer is modern enough. |
| 1151 | Because new from 8.3.8 onwards the peer can use multiple |
| 1152 | BIOs for a single peer_request */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1153 | if (device->state.conn >= C_WF_REPORT_PARAMS) { |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 1154 | if (first_peer_device(device)->connection->agreed_pro_version < 94) |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1155 | peer = min(device->peer_max_bio_size, DRBD_MAX_SIZE_H80_PACKET); |
Philipp Reisner | 6809384 | 2011-06-30 15:43:06 +0200 | [diff] [blame] | 1156 | /* Correct old drbd (up to 8.3.7) if it believes it can do more than 32KiB */ |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 1157 | else if (first_peer_device(device)->connection->agreed_pro_version == 94) |
Philipp Reisner | 99432fc | 2011-05-20 16:39:13 +0200 | [diff] [blame] | 1158 | peer = DRBD_MAX_SIZE_H80_PACKET; |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 1159 | else if (first_peer_device(device)->connection->agreed_pro_version < 100) |
Philipp Reisner | 2ffca4f | 2011-06-30 15:43:06 +0200 | [diff] [blame] | 1160 | peer = DRBD_MAX_BIO_SIZE_P95; /* drbd 8.3.8 onwards, before 8.4.0 */ |
| 1161 | else |
Philipp Reisner | 99432fc | 2011-05-20 16:39:13 +0200 | [diff] [blame] | 1162 | peer = DRBD_MAX_BIO_SIZE; |
| 1163 | } |
| 1164 | |
Lars Ellenberg | db141b2 | 2012-06-25 19:15:58 +0200 | [diff] [blame] | 1165 | new = min(local, peer); |
Philipp Reisner | 99432fc | 2011-05-20 16:39:13 +0200 | [diff] [blame] | 1166 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1167 | if (device->state.role == R_PRIMARY && new < now) |
Lars Ellenberg | db141b2 | 2012-06-25 19:15:58 +0200 | [diff] [blame] | 1168 | dev_err(DEV, "ASSERT FAILED new < now; (%u < %u)\n", new, now); |
Philipp Reisner | 99432fc | 2011-05-20 16:39:13 +0200 | [diff] [blame] | 1169 | |
| 1170 | if (new != now) |
| 1171 | dev_info(DEV, "max BIO size = %u\n", new); |
| 1172 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1173 | drbd_setup_queue_param(device, new); |
Philipp Reisner | 99432fc | 2011-05-20 16:39:13 +0200 | [diff] [blame] | 1174 | } |
| 1175 | |
Philipp Reisner | a18e9d1 | 2011-04-24 11:09:55 +0200 | [diff] [blame] | 1176 | /* Starts the worker thread */ |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 1177 | static void conn_reconfig_start(struct drbd_connection *connection) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1178 | { |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 1179 | drbd_thread_start(&connection->worker); |
| 1180 | conn_flush_workqueue(connection); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1181 | } |
| 1182 | |
Philipp Reisner | a18e9d1 | 2011-04-24 11:09:55 +0200 | [diff] [blame] | 1183 | /* if still unconfigured, stops worker again. */ |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 1184 | static void conn_reconfig_done(struct drbd_connection *connection) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1185 | { |
Lars Ellenberg | 992d6e9 | 2011-05-02 11:47:18 +0200 | [diff] [blame] | 1186 | bool stop_threads; |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 1187 | spin_lock_irq(&connection->req_lock); |
| 1188 | stop_threads = conn_all_vols_unconf(connection) && |
| 1189 | connection->cstate == C_STANDALONE; |
| 1190 | spin_unlock_irq(&connection->req_lock); |
Lars Ellenberg | 992d6e9 | 2011-05-02 11:47:18 +0200 | [diff] [blame] | 1191 | if (stop_threads) { |
| 1192 | /* asender is implicitly stopped by receiver |
Philipp Reisner | 81fa2e6 | 2011-05-04 15:10:30 +0200 | [diff] [blame] | 1193 | * in conn_disconnect() */ |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 1194 | drbd_thread_stop(&connection->receiver); |
| 1195 | drbd_thread_stop(&connection->worker); |
Lars Ellenberg | 992d6e9 | 2011-05-02 11:47:18 +0200 | [diff] [blame] | 1196 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1197 | } |
| 1198 | |
Philipp Reisner | 0778286 | 2010-08-31 12:00:50 +0200 | [diff] [blame] | 1199 | /* Make sure IO is suspended before calling this function(). */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1200 | static void drbd_suspend_al(struct drbd_device *device) |
Philipp Reisner | 0778286 | 2010-08-31 12:00:50 +0200 | [diff] [blame] | 1201 | { |
| 1202 | int s = 0; |
| 1203 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1204 | if (!lc_try_lock(device->act_log)) { |
Philipp Reisner | 0778286 | 2010-08-31 12:00:50 +0200 | [diff] [blame] | 1205 | dev_warn(DEV, "Failed to lock al in drbd_suspend_al()\n"); |
| 1206 | return; |
| 1207 | } |
| 1208 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1209 | drbd_al_shrink(device); |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 1210 | spin_lock_irq(&first_peer_device(device)->connection->req_lock); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1211 | if (device->state.conn < C_CONNECTED) |
| 1212 | s = !test_and_set_bit(AL_SUSPENDED, &device->flags); |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 1213 | spin_unlock_irq(&first_peer_device(device)->connection->req_lock); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1214 | lc_unlock(device->act_log); |
Philipp Reisner | 0778286 | 2010-08-31 12:00:50 +0200 | [diff] [blame] | 1215 | |
| 1216 | if (s) |
| 1217 | dev_info(DEV, "Suspended AL updates\n"); |
| 1218 | } |
| 1219 | |
Lars Ellenberg | 5979e36 | 2011-04-27 21:09:55 +0200 | [diff] [blame] | 1220 | |
| 1221 | static bool should_set_defaults(struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1222 | { |
Lars Ellenberg | 5979e36 | 2011-04-27 21:09:55 +0200 | [diff] [blame] | 1223 | unsigned flags = ((struct drbd_genlmsghdr*)info->userhdr)->flags; |
| 1224 | return 0 != (flags & DRBD_GENL_F_SET_DEFAULTS); |
| 1225 | } |
| 1226 | |
Lars Ellenberg | 5bbcf5e | 2013-03-19 18:16:59 +0100 | [diff] [blame] | 1227 | static unsigned int drbd_al_extents_max(struct drbd_backing_dev *bdev) |
Philipp Reisner | d589a21 | 2011-05-04 10:06:52 +0200 | [diff] [blame] | 1228 | { |
Lars Ellenberg | 5bbcf5e | 2013-03-19 18:16:59 +0100 | [diff] [blame] | 1229 | /* This is limited by 16 bit "slot" numbers, |
| 1230 | * and by available on-disk context storage. |
| 1231 | * |
| 1232 | * Also (u16)~0 is special (denotes a "free" extent). |
| 1233 | * |
| 1234 | * One transaction occupies one 4kB on-disk block, |
| 1235 | * we have n such blocks in the on disk ring buffer, |
| 1236 | * the "current" transaction may fail (n-1), |
| 1237 | * and there is 919 slot numbers context information per transaction. |
| 1238 | * |
| 1239 | * 72 transaction blocks amounts to more than 2**16 context slots, |
| 1240 | * so cap there first. |
| 1241 | */ |
| 1242 | const unsigned int max_al_nr = DRBD_AL_EXTENTS_MAX; |
| 1243 | const unsigned int sufficient_on_disk = |
| 1244 | (max_al_nr + AL_CONTEXT_PER_TRANSACTION -1) |
| 1245 | /AL_CONTEXT_PER_TRANSACTION; |
Philipp Reisner | d589a21 | 2011-05-04 10:06:52 +0200 | [diff] [blame] | 1246 | |
Lars Ellenberg | 5bbcf5e | 2013-03-19 18:16:59 +0100 | [diff] [blame] | 1247 | unsigned int al_size_4k = bdev->md.al_size_4k; |
| 1248 | |
| 1249 | if (al_size_4k > sufficient_on_disk) |
| 1250 | return max_al_nr; |
| 1251 | |
| 1252 | return (al_size_4k - 1) * AL_CONTEXT_PER_TRANSACTION; |
Philipp Reisner | d589a21 | 2011-05-04 10:06:52 +0200 | [diff] [blame] | 1253 | } |
| 1254 | |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1255 | int drbd_adm_disk_opts(struct sk_buff *skb, struct genl_info *info) |
| 1256 | { |
| 1257 | enum drbd_ret_code retcode; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1258 | struct drbd_device *device; |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1259 | struct disk_conf *new_disk_conf, *old_disk_conf; |
Philipp Reisner | 813472c | 2011-05-03 16:47:02 +0200 | [diff] [blame] | 1260 | struct fifo_buffer *old_plan = NULL, *new_plan = NULL; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1261 | int err, fifo_size; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1262 | |
| 1263 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR); |
| 1264 | if (!adm_ctx.reply_skb) |
| 1265 | return retcode; |
| 1266 | if (retcode != NO_ERROR) |
| 1267 | goto out; |
| 1268 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1269 | device = adm_ctx.device; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1270 | |
| 1271 | /* we also need a disk |
| 1272 | * to change the options on */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1273 | if (!get_ldev(device)) { |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1274 | retcode = ERR_NO_DISK; |
| 1275 | goto out; |
| 1276 | } |
| 1277 | |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1278 | new_disk_conf = kmalloc(sizeof(struct disk_conf), GFP_KERNEL); |
Lars Ellenberg | 5ecc72c | 2011-04-27 21:14:57 +0200 | [diff] [blame] | 1279 | if (!new_disk_conf) { |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1280 | retcode = ERR_NOMEM; |
| 1281 | goto fail; |
| 1282 | } |
| 1283 | |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 1284 | mutex_lock(&first_peer_device(device)->connection->conf_update); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1285 | old_disk_conf = device->ldev->disk_conf; |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1286 | *new_disk_conf = *old_disk_conf; |
Lars Ellenberg | 5979e36 | 2011-04-27 21:09:55 +0200 | [diff] [blame] | 1287 | if (should_set_defaults(info)) |
Andreas Gruenbacher | b966b5d | 2011-05-03 14:56:09 +0200 | [diff] [blame] | 1288 | set_disk_conf_defaults(new_disk_conf); |
Lars Ellenberg | 5979e36 | 2011-04-27 21:09:55 +0200 | [diff] [blame] | 1289 | |
Lars Ellenberg | 5ecc72c | 2011-04-27 21:14:57 +0200 | [diff] [blame] | 1290 | err = disk_conf_from_attrs_for_change(new_disk_conf, info); |
Andreas Gruenbacher | c75b9b1 | 2011-05-24 14:18:31 +0200 | [diff] [blame] | 1291 | if (err && err != -ENOMSG) { |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1292 | retcode = ERR_MANDATORY_TAG; |
| 1293 | drbd_msg_put_info(from_attrs_err_to_txt(err)); |
Philipp Reisner | 8e22943 | 2013-08-01 10:21:47 +0200 | [diff] [blame] | 1294 | goto fail_unlock; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1295 | } |
| 1296 | |
Lars Ellenberg | 5ecc72c | 2011-04-27 21:14:57 +0200 | [diff] [blame] | 1297 | if (!expect(new_disk_conf->resync_rate >= 1)) |
| 1298 | new_disk_conf->resync_rate = 1; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1299 | |
Lars Ellenberg | 5bbcf5e | 2013-03-19 18:16:59 +0100 | [diff] [blame] | 1300 | if (new_disk_conf->al_extents < DRBD_AL_EXTENTS_MIN) |
| 1301 | new_disk_conf->al_extents = DRBD_AL_EXTENTS_MIN; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1302 | if (new_disk_conf->al_extents > drbd_al_extents_max(device->ldev)) |
| 1303 | new_disk_conf->al_extents = drbd_al_extents_max(device->ldev); |
Lars Ellenberg | 5bbcf5e | 2013-03-19 18:16:59 +0100 | [diff] [blame] | 1304 | |
| 1305 | if (new_disk_conf->c_plan_ahead > DRBD_C_PLAN_AHEAD_MAX) |
| 1306 | new_disk_conf->c_plan_ahead = DRBD_C_PLAN_AHEAD_MAX; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1307 | |
Lars Ellenberg | 5ecc72c | 2011-04-27 21:14:57 +0200 | [diff] [blame] | 1308 | fifo_size = (new_disk_conf->c_plan_ahead * 10 * SLEEP_TIME) / HZ; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1309 | if (fifo_size != device->rs_plan_s->size) { |
Philipp Reisner | 813472c | 2011-05-03 16:47:02 +0200 | [diff] [blame] | 1310 | new_plan = fifo_alloc(fifo_size); |
| 1311 | if (!new_plan) { |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1312 | dev_err(DEV, "kmalloc of fifo_buffer failed"); |
| 1313 | retcode = ERR_NOMEM; |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1314 | goto fail_unlock; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1315 | } |
| 1316 | } |
| 1317 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1318 | drbd_suspend_io(device); |
| 1319 | wait_event(device->al_wait, lc_try_lock(device->act_log)); |
| 1320 | drbd_al_shrink(device); |
| 1321 | err = drbd_check_al_size(device, new_disk_conf); |
| 1322 | lc_unlock(device->act_log); |
| 1323 | wake_up(&device->al_wait); |
| 1324 | drbd_resume_io(device); |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1325 | |
| 1326 | if (err) { |
| 1327 | retcode = ERR_NOMEM; |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1328 | goto fail_unlock; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1329 | } |
| 1330 | |
Philipp Reisner | dc97b70 | 2011-05-03 14:27:15 +0200 | [diff] [blame] | 1331 | write_lock_irq(&global_state_lock); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1332 | retcode = drbd_resync_after_valid(device, new_disk_conf->resync_after); |
Philipp Reisner | dc97b70 | 2011-05-03 14:27:15 +0200 | [diff] [blame] | 1333 | if (retcode == NO_ERROR) { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1334 | rcu_assign_pointer(device->ldev->disk_conf, new_disk_conf); |
| 1335 | drbd_resync_after_changed(device); |
Philipp Reisner | dc97b70 | 2011-05-03 14:27:15 +0200 | [diff] [blame] | 1336 | } |
| 1337 | write_unlock_irq(&global_state_lock); |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1338 | |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1339 | if (retcode != NO_ERROR) |
| 1340 | goto fail_unlock; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1341 | |
Philipp Reisner | 813472c | 2011-05-03 16:47:02 +0200 | [diff] [blame] | 1342 | if (new_plan) { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1343 | old_plan = device->rs_plan_s; |
| 1344 | rcu_assign_pointer(device->rs_plan_s, new_plan); |
Philipp Reisner | 9958c85 | 2011-05-03 16:19:31 +0200 | [diff] [blame] | 1345 | } |
Philipp Reisner | 9958c85 | 2011-05-03 16:19:31 +0200 | [diff] [blame] | 1346 | |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 1347 | mutex_unlock(&first_peer_device(device)->connection->conf_update); |
Philipp Reisner | 27eb13e | 2012-03-30 14:12:15 +0200 | [diff] [blame] | 1348 | |
Philipp Reisner | 9a51ab1 | 2012-02-20 21:53:28 +0100 | [diff] [blame] | 1349 | if (new_disk_conf->al_updates) |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1350 | device->ldev->md.flags &= ~MDF_AL_DISABLED; |
Philipp Reisner | 9a51ab1 | 2012-02-20 21:53:28 +0100 | [diff] [blame] | 1351 | else |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1352 | device->ldev->md.flags |= MDF_AL_DISABLED; |
Philipp Reisner | 9a51ab1 | 2012-02-20 21:53:28 +0100 | [diff] [blame] | 1353 | |
Lars Ellenberg | 691631c | 2012-10-26 00:41:50 +0200 | [diff] [blame] | 1354 | if (new_disk_conf->md_flushes) |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1355 | clear_bit(MD_NO_FUA, &device->flags); |
Lars Ellenberg | 691631c | 2012-10-26 00:41:50 +0200 | [diff] [blame] | 1356 | else |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1357 | set_bit(MD_NO_FUA, &device->flags); |
Lars Ellenberg | 691631c | 2012-10-26 00:41:50 +0200 | [diff] [blame] | 1358 | |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 1359 | drbd_bump_write_ordering(first_peer_device(device)->connection, WO_bdev_flush); |
Philipp Reisner | 27eb13e | 2012-03-30 14:12:15 +0200 | [diff] [blame] | 1360 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1361 | drbd_md_sync(device); |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1362 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1363 | if (device->state.conn >= C_CONNECTED) |
| 1364 | drbd_send_sync_param(device); |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1365 | |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1366 | synchronize_rcu(); |
| 1367 | kfree(old_disk_conf); |
Philipp Reisner | 813472c | 2011-05-03 16:47:02 +0200 | [diff] [blame] | 1368 | kfree(old_plan); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1369 | mod_timer(&device->request_timer, jiffies + HZ); |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1370 | goto success; |
| 1371 | |
| 1372 | fail_unlock: |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 1373 | mutex_unlock(&first_peer_device(device)->connection->conf_update); |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1374 | fail: |
Lars Ellenberg | 5ecc72c | 2011-04-27 21:14:57 +0200 | [diff] [blame] | 1375 | kfree(new_disk_conf); |
Philipp Reisner | 813472c | 2011-05-03 16:47:02 +0200 | [diff] [blame] | 1376 | kfree(new_plan); |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1377 | success: |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1378 | put_ldev(device); |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1379 | out: |
| 1380 | drbd_adm_finish(info, retcode); |
| 1381 | return 0; |
| 1382 | } |
| 1383 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 1384 | int drbd_adm_attach(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1385 | { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1386 | struct drbd_device *device; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 1387 | int err; |
Andreas Gruenbacher | 116676c | 2010-12-08 13:33:11 +0100 | [diff] [blame] | 1388 | enum drbd_ret_code retcode; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1389 | enum determine_dev_size dd; |
| 1390 | sector_t max_possible_sectors; |
| 1391 | sector_t min_md_device_sectors; |
| 1392 | struct drbd_backing_dev *nbc = NULL; /* new_backing_conf */ |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1393 | struct disk_conf *new_disk_conf = NULL; |
Tejun Heo | e525fd8 | 2010-11-13 11:55:17 +0100 | [diff] [blame] | 1394 | struct block_device *bdev; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1395 | struct lru_cache *resync_lru = NULL; |
Philipp Reisner | 9958c85 | 2011-05-03 16:19:31 +0200 | [diff] [blame] | 1396 | struct fifo_buffer *new_plan = NULL; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1397 | union drbd_state ns, os; |
Andreas Gruenbacher | f2024e7 | 2010-12-10 13:44:05 +0100 | [diff] [blame] | 1398 | enum drbd_state_rv rv; |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 1399 | struct net_conf *nc; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1400 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 1401 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR); |
| 1402 | if (!adm_ctx.reply_skb) |
| 1403 | return retcode; |
| 1404 | if (retcode != NO_ERROR) |
Lars Ellenberg | 40cbf08 | 2011-03-16 16:52:10 +0100 | [diff] [blame] | 1405 | goto finish; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 1406 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1407 | device = adm_ctx.device; |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 1408 | conn_reconfig_start(first_peer_device(device)->connection); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1409 | |
| 1410 | /* if you want to reconfigure, please tear down first */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1411 | if (device->state.disk > D_DISKLESS) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1412 | retcode = ERR_DISK_CONFIGURED; |
| 1413 | goto fail; |
| 1414 | } |
Lars Ellenberg | 82f59cc | 2010-10-16 12:13:47 +0200 | [diff] [blame] | 1415 | /* It may just now have detached because of IO error. Make sure |
| 1416 | * drbd_ldev_destroy is done already, we may end up here very fast, |
| 1417 | * e.g. if someone calls attach from the on-io-error handler, |
| 1418 | * to realize a "hot spare" feature (not that I'd recommend that) */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1419 | wait_event(device->misc_wait, !atomic_read(&device->local_cnt)); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1420 | |
Lars Ellenberg | 383606e | 2012-06-14 14:21:32 +0200 | [diff] [blame] | 1421 | /* make sure there is no leftover from previous force-detach attempts */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1422 | clear_bit(FORCE_DETACH, &device->flags); |
| 1423 | clear_bit(WAS_IO_ERROR, &device->flags); |
| 1424 | clear_bit(WAS_READ_ERROR, &device->flags); |
Lars Ellenberg | 383606e | 2012-06-14 14:21:32 +0200 | [diff] [blame] | 1425 | |
Lars Ellenberg | 0029d62 | 2012-06-14 18:02:52 +0200 | [diff] [blame] | 1426 | /* and no leftover from previously aborted resync or verify, either */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1427 | device->rs_total = 0; |
| 1428 | device->rs_failed = 0; |
| 1429 | atomic_set(&device->rs_pending_cnt, 0); |
Lars Ellenberg | 0029d62 | 2012-06-14 18:02:52 +0200 | [diff] [blame] | 1430 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 1431 | /* allocation not in the IO path, drbdsetup context */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1432 | nbc = kzalloc(sizeof(struct drbd_backing_dev), GFP_KERNEL); |
| 1433 | if (!nbc) { |
| 1434 | retcode = ERR_NOMEM; |
| 1435 | goto fail; |
| 1436 | } |
Philipp Reisner | 9f2247b | 2012-08-16 14:25:58 +0200 | [diff] [blame] | 1437 | spin_lock_init(&nbc->md.uuid_lock); |
| 1438 | |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1439 | new_disk_conf = kzalloc(sizeof(struct disk_conf), GFP_KERNEL); |
| 1440 | if (!new_disk_conf) { |
| 1441 | retcode = ERR_NOMEM; |
| 1442 | goto fail; |
| 1443 | } |
| 1444 | nbc->disk_conf = new_disk_conf; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1445 | |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1446 | set_disk_conf_defaults(new_disk_conf); |
| 1447 | err = disk_conf_from_attrs(new_disk_conf, info); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 1448 | if (err) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1449 | retcode = ERR_MANDATORY_TAG; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 1450 | drbd_msg_put_info(from_attrs_err_to_txt(err)); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1451 | goto fail; |
| 1452 | } |
| 1453 | |
Lars Ellenberg | 5bbcf5e | 2013-03-19 18:16:59 +0100 | [diff] [blame] | 1454 | if (new_disk_conf->c_plan_ahead > DRBD_C_PLAN_AHEAD_MAX) |
| 1455 | new_disk_conf->c_plan_ahead = DRBD_C_PLAN_AHEAD_MAX; |
Philipp Reisner | d589a21 | 2011-05-04 10:06:52 +0200 | [diff] [blame] | 1456 | |
Philipp Reisner | 9958c85 | 2011-05-03 16:19:31 +0200 | [diff] [blame] | 1457 | new_plan = fifo_alloc((new_disk_conf->c_plan_ahead * 10 * SLEEP_TIME) / HZ); |
| 1458 | if (!new_plan) { |
| 1459 | retcode = ERR_NOMEM; |
| 1460 | goto fail; |
| 1461 | } |
| 1462 | |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1463 | if (new_disk_conf->meta_dev_idx < DRBD_MD_INDEX_FLEX_INT) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1464 | retcode = ERR_MD_IDX_INVALID; |
| 1465 | goto fail; |
| 1466 | } |
| 1467 | |
Lars Ellenberg | a3f8f7d | 2013-03-27 14:08:43 +0100 | [diff] [blame] | 1468 | write_lock_irq(&global_state_lock); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1469 | retcode = drbd_resync_after_valid(device, new_disk_conf->resync_after); |
Lars Ellenberg | a3f8f7d | 2013-03-27 14:08:43 +0100 | [diff] [blame] | 1470 | write_unlock_irq(&global_state_lock); |
| 1471 | if (retcode != NO_ERROR) |
| 1472 | goto fail; |
| 1473 | |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 1474 | rcu_read_lock(); |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 1475 | nc = rcu_dereference(first_peer_device(device)->connection->net_conf); |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 1476 | if (nc) { |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1477 | if (new_disk_conf->fencing == FP_STONITH && nc->wire_protocol == DRBD_PROT_A) { |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 1478 | rcu_read_unlock(); |
Philipp Reisner | 47ff2d0 | 2010-06-18 13:56:57 +0200 | [diff] [blame] | 1479 | retcode = ERR_STONITH_AND_PROT_A; |
| 1480 | goto fail; |
| 1481 | } |
| 1482 | } |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 1483 | rcu_read_unlock(); |
Philipp Reisner | 47ff2d0 | 2010-06-18 13:56:57 +0200 | [diff] [blame] | 1484 | |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1485 | bdev = blkdev_get_by_path(new_disk_conf->backing_dev, |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1486 | FMODE_READ | FMODE_WRITE | FMODE_EXCL, device); |
Tejun Heo | e525fd8 | 2010-11-13 11:55:17 +0100 | [diff] [blame] | 1487 | if (IS_ERR(bdev)) { |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1488 | dev_err(DEV, "open(\"%s\") failed with %ld\n", new_disk_conf->backing_dev, |
Tejun Heo | e525fd8 | 2010-11-13 11:55:17 +0100 | [diff] [blame] | 1489 | PTR_ERR(bdev)); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1490 | retcode = ERR_OPEN_DISK; |
| 1491 | goto fail; |
| 1492 | } |
Tejun Heo | e525fd8 | 2010-11-13 11:55:17 +0100 | [diff] [blame] | 1493 | nbc->backing_bdev = bdev; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1494 | |
Tejun Heo | e525fd8 | 2010-11-13 11:55:17 +0100 | [diff] [blame] | 1495 | /* |
| 1496 | * meta_dev_idx >= 0: external fixed size, possibly multiple |
| 1497 | * drbd sharing one meta device. TODO in that case, paranoia |
| 1498 | * check that [md_bdev, meta_dev_idx] is not yet used by some |
| 1499 | * other drbd minor! (if you use drbd.conf + drbdadm, that |
| 1500 | * should check it for you already; but if you don't, or |
| 1501 | * someone fooled it, we need to double check here) |
| 1502 | */ |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1503 | bdev = blkdev_get_by_path(new_disk_conf->meta_dev, |
Tejun Heo | d4d7762 | 2010-11-13 11:55:18 +0100 | [diff] [blame] | 1504 | FMODE_READ | FMODE_WRITE | FMODE_EXCL, |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1505 | (new_disk_conf->meta_dev_idx < 0) ? |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1506 | (void *)device : (void *)drbd_m_holder); |
Tejun Heo | e525fd8 | 2010-11-13 11:55:17 +0100 | [diff] [blame] | 1507 | if (IS_ERR(bdev)) { |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1508 | dev_err(DEV, "open(\"%s\") failed with %ld\n", new_disk_conf->meta_dev, |
Tejun Heo | e525fd8 | 2010-11-13 11:55:17 +0100 | [diff] [blame] | 1509 | PTR_ERR(bdev)); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1510 | retcode = ERR_OPEN_MD_DISK; |
| 1511 | goto fail; |
| 1512 | } |
Tejun Heo | e525fd8 | 2010-11-13 11:55:17 +0100 | [diff] [blame] | 1513 | nbc->md_bdev = bdev; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1514 | |
Tejun Heo | e525fd8 | 2010-11-13 11:55:17 +0100 | [diff] [blame] | 1515 | if ((nbc->backing_bdev == nbc->md_bdev) != |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1516 | (new_disk_conf->meta_dev_idx == DRBD_MD_INDEX_INTERNAL || |
| 1517 | new_disk_conf->meta_dev_idx == DRBD_MD_INDEX_FLEX_INT)) { |
Tejun Heo | e525fd8 | 2010-11-13 11:55:17 +0100 | [diff] [blame] | 1518 | retcode = ERR_MD_IDX_INVALID; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1519 | goto fail; |
| 1520 | } |
| 1521 | |
| 1522 | resync_lru = lc_create("resync", drbd_bm_ext_cache, |
Lars Ellenberg | 46a15bc | 2011-02-21 13:21:01 +0100 | [diff] [blame] | 1523 | 1, 61, sizeof(struct bm_extent), |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1524 | offsetof(struct bm_extent, lce)); |
| 1525 | if (!resync_lru) { |
| 1526 | retcode = ERR_NOMEM; |
Tejun Heo | e525fd8 | 2010-11-13 11:55:17 +0100 | [diff] [blame] | 1527 | goto fail; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1528 | } |
| 1529 | |
Lars Ellenberg | c04ccaa | 2013-03-19 18:16:47 +0100 | [diff] [blame] | 1530 | /* Read our meta data super block early. |
| 1531 | * This also sets other on-disk offsets. */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1532 | retcode = drbd_md_read(device, nbc); |
Lars Ellenberg | c04ccaa | 2013-03-19 18:16:47 +0100 | [diff] [blame] | 1533 | if (retcode != NO_ERROR) |
| 1534 | goto fail; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1535 | |
Lars Ellenberg | 5bbcf5e | 2013-03-19 18:16:59 +0100 | [diff] [blame] | 1536 | if (new_disk_conf->al_extents < DRBD_AL_EXTENTS_MIN) |
| 1537 | new_disk_conf->al_extents = DRBD_AL_EXTENTS_MIN; |
| 1538 | if (new_disk_conf->al_extents > drbd_al_extents_max(nbc)) |
| 1539 | new_disk_conf->al_extents = drbd_al_extents_max(nbc); |
| 1540 | |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1541 | if (drbd_get_max_capacity(nbc) < new_disk_conf->disk_size) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1542 | dev_err(DEV, "max capacity %llu smaller than disk size %llu\n", |
| 1543 | (unsigned long long) drbd_get_max_capacity(nbc), |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1544 | (unsigned long long) new_disk_conf->disk_size); |
Lars Ellenberg | 7948bcd | 2011-06-06 15:36:04 +0200 | [diff] [blame] | 1545 | retcode = ERR_DISK_TOO_SMALL; |
Tejun Heo | e525fd8 | 2010-11-13 11:55:17 +0100 | [diff] [blame] | 1546 | goto fail; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1547 | } |
| 1548 | |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1549 | if (new_disk_conf->meta_dev_idx < 0) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1550 | max_possible_sectors = DRBD_MAX_SECTORS_FLEX; |
| 1551 | /* at least one MB, otherwise it does not make sense */ |
| 1552 | min_md_device_sectors = (2<<10); |
| 1553 | } else { |
| 1554 | max_possible_sectors = DRBD_MAX_SECTORS; |
Lars Ellenberg | ae8bf31 | 2013-03-19 18:16:43 +0100 | [diff] [blame] | 1555 | min_md_device_sectors = MD_128MB_SECT * (new_disk_conf->meta_dev_idx + 1); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1556 | } |
| 1557 | |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1558 | if (drbd_get_capacity(nbc->md_bdev) < min_md_device_sectors) { |
Lars Ellenberg | 7948bcd | 2011-06-06 15:36:04 +0200 | [diff] [blame] | 1559 | retcode = ERR_MD_DISK_TOO_SMALL; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1560 | dev_warn(DEV, "refusing attach: md-device too small, " |
| 1561 | "at least %llu sectors needed for this meta-disk type\n", |
| 1562 | (unsigned long long) min_md_device_sectors); |
Tejun Heo | e525fd8 | 2010-11-13 11:55:17 +0100 | [diff] [blame] | 1563 | goto fail; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1564 | } |
| 1565 | |
| 1566 | /* Make sure the new disk is big enough |
| 1567 | * (we may currently be R_PRIMARY with no local disk...) */ |
| 1568 | if (drbd_get_max_capacity(nbc) < |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1569 | drbd_get_capacity(device->this_bdev)) { |
Lars Ellenberg | 7948bcd | 2011-06-06 15:36:04 +0200 | [diff] [blame] | 1570 | retcode = ERR_DISK_TOO_SMALL; |
Tejun Heo | e525fd8 | 2010-11-13 11:55:17 +0100 | [diff] [blame] | 1571 | goto fail; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1572 | } |
| 1573 | |
| 1574 | nbc->known_size = drbd_get_capacity(nbc->backing_bdev); |
| 1575 | |
Lars Ellenberg | 1352994 | 2009-10-12 19:07:49 +0200 | [diff] [blame] | 1576 | if (nbc->known_size > max_possible_sectors) { |
| 1577 | dev_warn(DEV, "==> truncating very big lower level device " |
| 1578 | "to currently maximum possible %llu sectors <==\n", |
| 1579 | (unsigned long long) max_possible_sectors); |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1580 | if (new_disk_conf->meta_dev_idx >= 0) |
Lars Ellenberg | 1352994 | 2009-10-12 19:07:49 +0200 | [diff] [blame] | 1581 | dev_warn(DEV, "==>> using internal or flexible " |
| 1582 | "meta data may help <<==\n"); |
| 1583 | } |
| 1584 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1585 | drbd_suspend_io(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1586 | /* also wait for the last barrier ack. */ |
Lars Ellenberg | b6dd1a8 | 2011-11-28 15:04:49 +0100 | [diff] [blame] | 1587 | /* FIXME see also https://daiquiri.linbit/cgi-bin/bugzilla/show_bug.cgi?id=171 |
| 1588 | * We need a way to either ignore barrier acks for barriers sent before a device |
| 1589 | * was attached, or a way to wait for all pending barrier acks to come in. |
| 1590 | * As barriers are counted per resource, |
| 1591 | * we'd need to suspend io on all devices of a resource. |
| 1592 | */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1593 | wait_event(device->misc_wait, !atomic_read(&device->ap_pending_cnt) || drbd_suspended(device)); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1594 | /* and for any other previously queued work */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1595 | drbd_flush_workqueue(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1596 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1597 | rv = _drbd_request_state(device, NS(disk, D_ATTACHING), CS_VERBOSE); |
Andreas Gruenbacher | f2024e7 | 2010-12-10 13:44:05 +0100 | [diff] [blame] | 1598 | retcode = rv; /* FIXME: Type mismatch. */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1599 | drbd_resume_io(device); |
Andreas Gruenbacher | f2024e7 | 2010-12-10 13:44:05 +0100 | [diff] [blame] | 1600 | if (rv < SS_SUCCESS) |
Tejun Heo | e525fd8 | 2010-11-13 11:55:17 +0100 | [diff] [blame] | 1601 | goto fail; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1602 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1603 | if (!get_ldev_if_state(device, D_ATTACHING)) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1604 | goto force_diskless; |
| 1605 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1606 | if (!device->bitmap) { |
| 1607 | if (drbd_bm_init(device)) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1608 | retcode = ERR_NOMEM; |
| 1609 | goto force_diskless_dec; |
| 1610 | } |
| 1611 | } |
| 1612 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1613 | if (device->state.conn < C_CONNECTED && |
| 1614 | device->state.role == R_PRIMARY && |
| 1615 | (device->ed_uuid & ~((u64)1)) != (nbc->md.uuid[UI_CURRENT] & ~((u64)1))) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1616 | dev_err(DEV, "Can only attach to data with current UUID=%016llX\n", |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1617 | (unsigned long long)device->ed_uuid); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1618 | retcode = ERR_DATA_NOT_CURRENT; |
| 1619 | goto force_diskless_dec; |
| 1620 | } |
| 1621 | |
| 1622 | /* Since we are diskless, fix the activity log first... */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1623 | if (drbd_check_al_size(device, new_disk_conf)) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1624 | retcode = ERR_NOMEM; |
| 1625 | goto force_diskless_dec; |
| 1626 | } |
| 1627 | |
| 1628 | /* Prevent shrinking of consistent devices ! */ |
| 1629 | if (drbd_md_test_flag(nbc, MDF_CONSISTENT) && |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1630 | drbd_new_dev_size(device, nbc, nbc->disk_conf->disk_size, 0) < nbc->md.la_size_sect) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1631 | dev_warn(DEV, "refusing to truncate a consistent device\n"); |
Lars Ellenberg | 7948bcd | 2011-06-06 15:36:04 +0200 | [diff] [blame] | 1632 | retcode = ERR_DISK_TOO_SMALL; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1633 | goto force_diskless_dec; |
| 1634 | } |
| 1635 | |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1636 | /* Reset the "barriers don't work" bits here, then force meta data to |
| 1637 | * be written, to ensure we determine if barriers are supported. */ |
Andreas Gruenbacher | e544046 | 2011-05-04 15:25:35 +0200 | [diff] [blame] | 1638 | if (new_disk_conf->md_flushes) |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1639 | clear_bit(MD_NO_FUA, &device->flags); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1640 | else |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1641 | set_bit(MD_NO_FUA, &device->flags); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1642 | |
| 1643 | /* Point of no return reached. |
| 1644 | * Devices and memory are no longer released by error cleanup below. |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1645 | * now device takes over responsibility, and the state engine should |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1646 | * clean it up somewhere. */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1647 | D_ASSERT(device->ldev == NULL); |
| 1648 | device->ldev = nbc; |
| 1649 | device->resync = resync_lru; |
| 1650 | device->rs_plan_s = new_plan; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1651 | nbc = NULL; |
| 1652 | resync_lru = NULL; |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1653 | new_disk_conf = NULL; |
Philipp Reisner | 9958c85 | 2011-05-03 16:19:31 +0200 | [diff] [blame] | 1654 | new_plan = NULL; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1655 | |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 1656 | drbd_bump_write_ordering(first_peer_device(device)->connection, WO_bdev_flush); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1657 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1658 | if (drbd_md_test_flag(device->ldev, MDF_CRASHED_PRIMARY)) |
| 1659 | set_bit(CRASHED_PRIMARY, &device->flags); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1660 | else |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1661 | clear_bit(CRASHED_PRIMARY, &device->flags); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1662 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1663 | if (drbd_md_test_flag(device->ldev, MDF_PRIMARY_IND) && |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 1664 | !(device->state.role == R_PRIMARY && |
| 1665 | first_peer_device(device)->connection->susp_nod)) |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1666 | set_bit(CRASHED_PRIMARY, &device->flags); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1667 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1668 | device->send_cnt = 0; |
| 1669 | device->recv_cnt = 0; |
| 1670 | device->read_cnt = 0; |
| 1671 | device->writ_cnt = 0; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1672 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1673 | drbd_reconsider_max_bio_size(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1674 | |
| 1675 | /* If I am currently not R_PRIMARY, |
| 1676 | * but meta data primary indicator is set, |
| 1677 | * I just now recover from a hard crash, |
| 1678 | * and have been R_PRIMARY before that crash. |
| 1679 | * |
| 1680 | * Now, if I had no connection before that crash |
| 1681 | * (have been degraded R_PRIMARY), chances are that |
| 1682 | * I won't find my peer now either. |
| 1683 | * |
| 1684 | * In that case, and _only_ in that case, |
| 1685 | * we use the degr-wfc-timeout instead of the default, |
| 1686 | * so we can automatically recover from a crash of a |
| 1687 | * degraded but active "cluster" after a certain timeout. |
| 1688 | */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1689 | clear_bit(USE_DEGR_WFC_T, &device->flags); |
| 1690 | if (device->state.role != R_PRIMARY && |
| 1691 | drbd_md_test_flag(device->ldev, MDF_PRIMARY_IND) && |
| 1692 | !drbd_md_test_flag(device->ldev, MDF_CONNECTED_IND)) |
| 1693 | set_bit(USE_DEGR_WFC_T, &device->flags); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1694 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1695 | dd = drbd_determine_dev_size(device, 0, NULL); |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 1696 | if (dd <= DS_ERROR) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1697 | retcode = ERR_NOMEM_BITMAP; |
| 1698 | goto force_diskless_dec; |
Philipp Reisner | e96c963 | 2013-06-25 16:50:07 +0200 | [diff] [blame] | 1699 | } else if (dd == DS_GREW) |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1700 | set_bit(RESYNC_AFTER_NEG, &device->flags); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1701 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1702 | if (drbd_md_test_flag(device->ldev, MDF_FULL_SYNC) || |
| 1703 | (test_bit(CRASHED_PRIMARY, &device->flags) && |
| 1704 | drbd_md_test_flag(device->ldev, MDF_AL_DISABLED))) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1705 | dev_info(DEV, "Assuming that all blocks are out of sync " |
| 1706 | "(aka FullSync)\n"); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1707 | if (drbd_bitmap_io(device, &drbd_bmio_set_n_write, |
Lars Ellenberg | 20ceb2b | 2011-01-21 10:56:44 +0100 | [diff] [blame] | 1708 | "set_n_write from attaching", BM_LOCKED_MASK)) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1709 | retcode = ERR_IO_MD_DISK; |
| 1710 | goto force_diskless_dec; |
| 1711 | } |
| 1712 | } else { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1713 | if (drbd_bitmap_io(device, &drbd_bm_read, |
Andreas Gruenbacher | 22ab6a3 | 2010-12-13 01:44:11 +0100 | [diff] [blame] | 1714 | "read from attaching", BM_LOCKED_MASK)) { |
Lars Ellenberg | 19f843a | 2010-12-15 08:59:11 +0100 | [diff] [blame] | 1715 | retcode = ERR_IO_MD_DISK; |
| 1716 | goto force_diskless_dec; |
| 1717 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1718 | } |
| 1719 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1720 | if (_drbd_bm_total_weight(device) == drbd_bm_bits(device)) |
| 1721 | drbd_suspend_al(device); /* IO is still suspended here... */ |
Philipp Reisner | 0778286 | 2010-08-31 12:00:50 +0200 | [diff] [blame] | 1722 | |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 1723 | spin_lock_irq(&first_peer_device(device)->connection->req_lock); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1724 | os = drbd_read_state(device); |
Philipp Reisner | 78bae59 | 2011-03-28 15:40:12 +0200 | [diff] [blame] | 1725 | ns = os; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1726 | /* If MDF_CONSISTENT is not set go into inconsistent state, |
| 1727 | otherwise investigate MDF_WasUpToDate... |
| 1728 | If MDF_WAS_UP_TO_DATE is not set go into D_OUTDATED disk state, |
| 1729 | otherwise into D_CONSISTENT state. |
| 1730 | */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1731 | if (drbd_md_test_flag(device->ldev, MDF_CONSISTENT)) { |
| 1732 | if (drbd_md_test_flag(device->ldev, MDF_WAS_UP_TO_DATE)) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1733 | ns.disk = D_CONSISTENT; |
| 1734 | else |
| 1735 | ns.disk = D_OUTDATED; |
| 1736 | } else { |
| 1737 | ns.disk = D_INCONSISTENT; |
| 1738 | } |
| 1739 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1740 | if (drbd_md_test_flag(device->ldev, MDF_PEER_OUT_DATED)) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1741 | ns.pdsk = D_OUTDATED; |
| 1742 | |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1743 | rcu_read_lock(); |
| 1744 | if (ns.disk == D_CONSISTENT && |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1745 | (ns.pdsk == D_OUTDATED || rcu_dereference(device->ldev->disk_conf)->fencing == FP_DONT_CARE)) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1746 | ns.disk = D_UP_TO_DATE; |
| 1747 | |
| 1748 | /* All tests on MDF_PRIMARY_IND, MDF_CONNECTED_IND, |
| 1749 | MDF_CONSISTENT and MDF_WAS_UP_TO_DATE must happen before |
| 1750 | this point, because drbd_request_state() modifies these |
| 1751 | flags. */ |
| 1752 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1753 | if (rcu_dereference(device->ldev->disk_conf)->al_updates) |
| 1754 | device->ldev->md.flags &= ~MDF_AL_DISABLED; |
Philipp Reisner | 9a51ab1 | 2012-02-20 21:53:28 +0100 | [diff] [blame] | 1755 | else |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1756 | device->ldev->md.flags |= MDF_AL_DISABLED; |
Philipp Reisner | 9a51ab1 | 2012-02-20 21:53:28 +0100 | [diff] [blame] | 1757 | |
| 1758 | rcu_read_unlock(); |
| 1759 | |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1760 | /* In case we are C_CONNECTED postpone any decision on the new disk |
| 1761 | state after the negotiation phase. */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1762 | if (device->state.conn == C_CONNECTED) { |
| 1763 | device->new_state_tmp.i = ns.i; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1764 | ns.i = os.i; |
| 1765 | ns.disk = D_NEGOTIATING; |
Philipp Reisner | dc66c74 | 2010-06-02 14:31:29 +0200 | [diff] [blame] | 1766 | |
| 1767 | /* We expect to receive up-to-date UUIDs soon. |
| 1768 | To avoid a race in receive_state, free p_uuid while |
| 1769 | holding req_lock. I.e. atomic with the state change */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1770 | kfree(device->p_uuid); |
| 1771 | device->p_uuid = NULL; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1772 | } |
| 1773 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1774 | rv = _drbd_set_state(device, ns, CS_VERBOSE, NULL); |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 1775 | spin_unlock_irq(&first_peer_device(device)->connection->req_lock); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1776 | |
| 1777 | if (rv < SS_SUCCESS) |
| 1778 | goto force_diskless_dec; |
| 1779 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1780 | mod_timer(&device->request_timer, jiffies + HZ); |
Philipp Reisner | cdfda63 | 2011-07-05 15:38:59 +0200 | [diff] [blame] | 1781 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1782 | if (device->state.role == R_PRIMARY) |
| 1783 | device->ldev->md.uuid[UI_CURRENT] |= (u64)1; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1784 | else |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1785 | device->ldev->md.uuid[UI_CURRENT] &= ~(u64)1; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1786 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1787 | drbd_md_mark_dirty(device); |
| 1788 | drbd_md_sync(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1789 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1790 | kobject_uevent(&disk_to_dev(device->vdisk)->kobj, KOBJ_CHANGE); |
| 1791 | put_ldev(device); |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 1792 | conn_reconfig_done(first_peer_device(device)->connection); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 1793 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1794 | return 0; |
| 1795 | |
| 1796 | force_diskless_dec: |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1797 | put_ldev(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1798 | force_diskless: |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1799 | drbd_force_state(device, NS(disk, D_DISKLESS)); |
| 1800 | drbd_md_sync(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1801 | fail: |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 1802 | conn_reconfig_done(first_peer_device(device)->connection); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1803 | if (nbc) { |
Tejun Heo | e525fd8 | 2010-11-13 11:55:17 +0100 | [diff] [blame] | 1804 | if (nbc->backing_bdev) |
| 1805 | blkdev_put(nbc->backing_bdev, |
| 1806 | FMODE_READ | FMODE_WRITE | FMODE_EXCL); |
| 1807 | if (nbc->md_bdev) |
| 1808 | blkdev_put(nbc->md_bdev, |
| 1809 | FMODE_READ | FMODE_WRITE | FMODE_EXCL); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1810 | kfree(nbc); |
| 1811 | } |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 1812 | kfree(new_disk_conf); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1813 | lc_destroy(resync_lru); |
Philipp Reisner | 9958c85 | 2011-05-03 16:19:31 +0200 | [diff] [blame] | 1814 | kfree(new_plan); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1815 | |
Lars Ellenberg | 40cbf08 | 2011-03-16 16:52:10 +0100 | [diff] [blame] | 1816 | finish: |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 1817 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1818 | return 0; |
| 1819 | } |
| 1820 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1821 | static int adm_detach(struct drbd_device *device, int force) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1822 | { |
Philipp Reisner | 19f83c7 | 2011-03-29 14:21:03 +0200 | [diff] [blame] | 1823 | enum drbd_state_rv retcode; |
Lars Ellenberg | 9a0d9d0 | 2011-05-02 11:51:31 +0200 | [diff] [blame] | 1824 | int ret; |
Philipp Reisner | 02ee8f9 | 2011-03-14 11:54:47 +0100 | [diff] [blame] | 1825 | |
Philipp Reisner | cdfda63 | 2011-07-05 15:38:59 +0200 | [diff] [blame] | 1826 | if (force) { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1827 | set_bit(FORCE_DETACH, &device->flags); |
| 1828 | drbd_force_state(device, NS(disk, D_FAILED)); |
Philipp Reisner | cdfda63 | 2011-07-05 15:38:59 +0200 | [diff] [blame] | 1829 | retcode = SS_SUCCESS; |
Philipp Reisner | 02ee8f9 | 2011-03-14 11:54:47 +0100 | [diff] [blame] | 1830 | goto out; |
| 1831 | } |
| 1832 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1833 | drbd_suspend_io(device); /* so no-one is stuck in drbd_al_begin_io */ |
| 1834 | drbd_md_get_buffer(device); /* make sure there is no in-flight meta-data IO */ |
| 1835 | retcode = drbd_request_state(device, NS(disk, D_FAILED)); |
| 1836 | drbd_md_put_buffer(device); |
Lars Ellenberg | 9a0d9d0 | 2011-05-02 11:51:31 +0200 | [diff] [blame] | 1837 | /* D_FAILED will transition to DISKLESS. */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1838 | ret = wait_event_interruptible(device->misc_wait, |
| 1839 | device->state.disk != D_FAILED); |
| 1840 | drbd_resume_io(device); |
Philipp Reisner | 9b2f61a | 2011-05-24 10:27:38 +0200 | [diff] [blame] | 1841 | if ((int)retcode == (int)SS_IS_DISKLESS) |
Lars Ellenberg | 9a0d9d0 | 2011-05-02 11:51:31 +0200 | [diff] [blame] | 1842 | retcode = SS_NOTHING_TO_DO; |
| 1843 | if (ret) |
| 1844 | retcode = ERR_INTR; |
Philipp Reisner | 02ee8f9 | 2011-03-14 11:54:47 +0100 | [diff] [blame] | 1845 | out: |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 1846 | return retcode; |
| 1847 | } |
| 1848 | |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1849 | /* Detaching the disk is a process in multiple stages. First we need to lock |
| 1850 | * out application IO, in-flight IO, IO stuck in drbd_al_begin_io. |
| 1851 | * Then we transition to D_DISKLESS, and wait for put_ldev() to return all |
| 1852 | * internal references as well. |
| 1853 | * Only then we have finally detached. */ |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 1854 | int drbd_adm_detach(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1855 | { |
| 1856 | enum drbd_ret_code retcode; |
Philipp Reisner | cdfda63 | 2011-07-05 15:38:59 +0200 | [diff] [blame] | 1857 | struct detach_parms parms = { }; |
| 1858 | int err; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 1859 | |
| 1860 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR); |
| 1861 | if (!adm_ctx.reply_skb) |
| 1862 | return retcode; |
| 1863 | if (retcode != NO_ERROR) |
| 1864 | goto out; |
| 1865 | |
Philipp Reisner | cdfda63 | 2011-07-05 15:38:59 +0200 | [diff] [blame] | 1866 | if (info->attrs[DRBD_NLA_DETACH_PARMS]) { |
| 1867 | err = detach_parms_from_attrs(&parms, info); |
| 1868 | if (err) { |
| 1869 | retcode = ERR_MANDATORY_TAG; |
| 1870 | drbd_msg_put_info(from_attrs_err_to_txt(err)); |
| 1871 | goto out; |
| 1872 | } |
| 1873 | } |
| 1874 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1875 | retcode = adm_detach(adm_ctx.device, parms.force_detach); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 1876 | out: |
| 1877 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1878 | return 0; |
| 1879 | } |
| 1880 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 1881 | static bool conn_resync_running(struct drbd_connection *connection) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 1882 | { |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 1883 | struct drbd_peer_device *peer_device; |
Philipp Reisner | 695d08f | 2011-04-11 22:53:32 -0700 | [diff] [blame] | 1884 | bool rv = false; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1885 | int vnr; |
| 1886 | |
Philipp Reisner | 695d08f | 2011-04-11 22:53:32 -0700 | [diff] [blame] | 1887 | rcu_read_lock(); |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 1888 | idr_for_each_entry(&connection->peer_devices, peer_device, vnr) { |
| 1889 | struct drbd_device *device = peer_device->device; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1890 | if (device->state.conn == C_SYNC_SOURCE || |
| 1891 | device->state.conn == C_SYNC_TARGET || |
| 1892 | device->state.conn == C_PAUSED_SYNC_S || |
| 1893 | device->state.conn == C_PAUSED_SYNC_T) { |
Philipp Reisner | 695d08f | 2011-04-11 22:53:32 -0700 | [diff] [blame] | 1894 | rv = true; |
| 1895 | break; |
| 1896 | } |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1897 | } |
Philipp Reisner | 695d08f | 2011-04-11 22:53:32 -0700 | [diff] [blame] | 1898 | rcu_read_unlock(); |
| 1899 | |
| 1900 | return rv; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1901 | } |
| 1902 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 1903 | static bool conn_ov_running(struct drbd_connection *connection) |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1904 | { |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 1905 | struct drbd_peer_device *peer_device; |
Philipp Reisner | 695d08f | 2011-04-11 22:53:32 -0700 | [diff] [blame] | 1906 | bool rv = false; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1907 | int vnr; |
| 1908 | |
Philipp Reisner | 695d08f | 2011-04-11 22:53:32 -0700 | [diff] [blame] | 1909 | rcu_read_lock(); |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 1910 | idr_for_each_entry(&connection->peer_devices, peer_device, vnr) { |
| 1911 | struct drbd_device *device = peer_device->device; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1912 | if (device->state.conn == C_VERIFY_S || |
| 1913 | device->state.conn == C_VERIFY_T) { |
Philipp Reisner | 695d08f | 2011-04-11 22:53:32 -0700 | [diff] [blame] | 1914 | rv = true; |
| 1915 | break; |
| 1916 | } |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1917 | } |
Philipp Reisner | 695d08f | 2011-04-11 22:53:32 -0700 | [diff] [blame] | 1918 | rcu_read_unlock(); |
| 1919 | |
| 1920 | return rv; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 1921 | } |
| 1922 | |
Philipp Reisner | cd64397 | 2011-04-13 18:00:59 -0700 | [diff] [blame] | 1923 | static enum drbd_ret_code |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 1924 | _check_net_options(struct drbd_connection *connection, struct net_conf *old_conf, struct net_conf *new_conf) |
Philipp Reisner | cd64397 | 2011-04-13 18:00:59 -0700 | [diff] [blame] | 1925 | { |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 1926 | struct drbd_peer_device *peer_device; |
Philipp Reisner | cd64397 | 2011-04-13 18:00:59 -0700 | [diff] [blame] | 1927 | int i; |
| 1928 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 1929 | if (old_conf && connection->cstate == C_WF_REPORT_PARAMS && connection->agreed_pro_version < 100) { |
Philipp Reisner | dcb20d1 | 2011-05-16 14:30:24 +0200 | [diff] [blame] | 1930 | if (new_conf->wire_protocol != old_conf->wire_protocol) |
| 1931 | return ERR_NEED_APV_100; |
| 1932 | |
| 1933 | if (new_conf->two_primaries != old_conf->two_primaries) |
| 1934 | return ERR_NEED_APV_100; |
| 1935 | |
Philipp Reisner | dcb20d1 | 2011-05-16 14:30:24 +0200 | [diff] [blame] | 1936 | if (strcmp(new_conf->integrity_alg, old_conf->integrity_alg)) |
| 1937 | return ERR_NEED_APV_100; |
| 1938 | } |
| 1939 | |
| 1940 | if (!new_conf->two_primaries && |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 1941 | conn_highest_role(connection) == R_PRIMARY && |
| 1942 | conn_highest_peer(connection) == R_PRIMARY) |
Philipp Reisner | dcb20d1 | 2011-05-16 14:30:24 +0200 | [diff] [blame] | 1943 | return ERR_NEED_ALLOW_TWO_PRI; |
Philipp Reisner | b032b6f | 2011-04-13 18:16:10 -0700 | [diff] [blame] | 1944 | |
Philipp Reisner | cd64397 | 2011-04-13 18:00:59 -0700 | [diff] [blame] | 1945 | if (new_conf->two_primaries && |
| 1946 | (new_conf->wire_protocol != DRBD_PROT_C)) |
| 1947 | return ERR_NOT_PROTO_C; |
| 1948 | |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 1949 | idr_for_each_entry(&connection->peer_devices, peer_device, i) { |
| 1950 | struct drbd_device *device = peer_device->device; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1951 | if (get_ldev(device)) { |
| 1952 | enum drbd_fencing_p fp = rcu_dereference(device->ldev->disk_conf)->fencing; |
| 1953 | put_ldev(device); |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 1954 | if (new_conf->wire_protocol == DRBD_PROT_A && fp == FP_STONITH) |
Philipp Reisner | cd64397 | 2011-04-13 18:00:59 -0700 | [diff] [blame] | 1955 | return ERR_STONITH_AND_PROT_A; |
Philipp Reisner | cd64397 | 2011-04-13 18:00:59 -0700 | [diff] [blame] | 1956 | } |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1957 | if (device->state.role == R_PRIMARY && new_conf->discard_my_data) |
Lars Ellenberg | eb12010 | 2012-08-01 12:46:20 +0200 | [diff] [blame] | 1958 | return ERR_DISCARD_IMPOSSIBLE; |
Philipp Reisner | cd64397 | 2011-04-13 18:00:59 -0700 | [diff] [blame] | 1959 | } |
Philipp Reisner | cd64397 | 2011-04-13 18:00:59 -0700 | [diff] [blame] | 1960 | |
| 1961 | if (new_conf->on_congestion != OC_BLOCK && new_conf->wire_protocol != DRBD_PROT_A) |
| 1962 | return ERR_CONG_NOT_PROTO_A; |
| 1963 | |
| 1964 | return NO_ERROR; |
| 1965 | } |
| 1966 | |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 1967 | static enum drbd_ret_code |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 1968 | check_net_options(struct drbd_connection *connection, struct net_conf *new_conf) |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 1969 | { |
| 1970 | static enum drbd_ret_code rv; |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 1971 | struct drbd_peer_device *peer_device; |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 1972 | int i; |
| 1973 | |
| 1974 | rcu_read_lock(); |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 1975 | rv = _check_net_options(connection, rcu_dereference(connection->net_conf), new_conf); |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 1976 | rcu_read_unlock(); |
| 1977 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 1978 | /* connection->volumes protected by genl_lock() here */ |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 1979 | idr_for_each_entry(&connection->peer_devices, peer_device, i) { |
| 1980 | struct drbd_device *device = peer_device->device; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 1981 | if (!device->bitmap) { |
| 1982 | if (drbd_bm_init(device)) |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 1983 | return ERR_NOMEM; |
| 1984 | } |
| 1985 | } |
| 1986 | |
| 1987 | return rv; |
| 1988 | } |
| 1989 | |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 1990 | struct crypto { |
| 1991 | struct crypto_hash *verify_tfm; |
| 1992 | struct crypto_hash *csums_tfm; |
| 1993 | struct crypto_hash *cram_hmac_tfm; |
Andreas Gruenbacher | 8d412fc | 2011-04-27 20:59:18 +0200 | [diff] [blame] | 1994 | struct crypto_hash *integrity_tfm; |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 1995 | }; |
| 1996 | |
| 1997 | static int |
Andreas Gruenbacher | 4b6ad6d | 2011-04-29 10:20:08 +0200 | [diff] [blame] | 1998 | alloc_hash(struct crypto_hash **tfm, char *tfm_name, int err_alg) |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 1999 | { |
| 2000 | if (!tfm_name[0]) |
| 2001 | return NO_ERROR; |
| 2002 | |
| 2003 | *tfm = crypto_alloc_hash(tfm_name, 0, CRYPTO_ALG_ASYNC); |
| 2004 | if (IS_ERR(*tfm)) { |
| 2005 | *tfm = NULL; |
| 2006 | return err_alg; |
| 2007 | } |
| 2008 | |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2009 | return NO_ERROR; |
| 2010 | } |
| 2011 | |
| 2012 | static enum drbd_ret_code |
| 2013 | alloc_crypto(struct crypto *crypto, struct net_conf *new_conf) |
| 2014 | { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2015 | char hmac_name[CRYPTO_MAX_ALG_NAME]; |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2016 | enum drbd_ret_code rv; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2017 | |
Andreas Gruenbacher | 4b6ad6d | 2011-04-29 10:20:08 +0200 | [diff] [blame] | 2018 | rv = alloc_hash(&crypto->csums_tfm, new_conf->csums_alg, |
| 2019 | ERR_CSUMS_ALG); |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2020 | if (rv != NO_ERROR) |
| 2021 | return rv; |
Andreas Gruenbacher | 4b6ad6d | 2011-04-29 10:20:08 +0200 | [diff] [blame] | 2022 | rv = alloc_hash(&crypto->verify_tfm, new_conf->verify_alg, |
| 2023 | ERR_VERIFY_ALG); |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2024 | if (rv != NO_ERROR) |
| 2025 | return rv; |
Andreas Gruenbacher | 4b6ad6d | 2011-04-29 10:20:08 +0200 | [diff] [blame] | 2026 | rv = alloc_hash(&crypto->integrity_tfm, new_conf->integrity_alg, |
| 2027 | ERR_INTEGRITY_ALG); |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2028 | if (rv != NO_ERROR) |
| 2029 | return rv; |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2030 | if (new_conf->cram_hmac_alg[0] != 0) { |
| 2031 | snprintf(hmac_name, CRYPTO_MAX_ALG_NAME, "hmac(%s)", |
| 2032 | new_conf->cram_hmac_alg); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2033 | |
Andreas Gruenbacher | 4b6ad6d | 2011-04-29 10:20:08 +0200 | [diff] [blame] | 2034 | rv = alloc_hash(&crypto->cram_hmac_tfm, hmac_name, |
| 2035 | ERR_AUTH_ALG); |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2036 | } |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2037 | |
| 2038 | return rv; |
| 2039 | } |
| 2040 | |
| 2041 | static void free_crypto(struct crypto *crypto) |
| 2042 | { |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2043 | crypto_free_hash(crypto->cram_hmac_tfm); |
Andreas Gruenbacher | 8d412fc | 2011-04-27 20:59:18 +0200 | [diff] [blame] | 2044 | crypto_free_hash(crypto->integrity_tfm); |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2045 | crypto_free_hash(crypto->csums_tfm); |
| 2046 | crypto_free_hash(crypto->verify_tfm); |
| 2047 | } |
| 2048 | |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2049 | int drbd_adm_net_opts(struct sk_buff *skb, struct genl_info *info) |
| 2050 | { |
| 2051 | enum drbd_ret_code retcode; |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2052 | struct drbd_connection *connection; |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 2053 | struct net_conf *old_conf, *new_conf = NULL; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2054 | int err; |
| 2055 | int ovr; /* online verify running */ |
| 2056 | int rsr; /* re-sync running */ |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2057 | struct crypto crypto = { }; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2058 | |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 2059 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_CONNECTION); |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2060 | if (!adm_ctx.reply_skb) |
| 2061 | return retcode; |
| 2062 | if (retcode != NO_ERROR) |
| 2063 | goto out; |
| 2064 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2065 | connection = adm_ctx.connection; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2066 | |
| 2067 | new_conf = kzalloc(sizeof(struct net_conf), GFP_KERNEL); |
| 2068 | if (!new_conf) { |
| 2069 | retcode = ERR_NOMEM; |
| 2070 | goto out; |
| 2071 | } |
| 2072 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2073 | conn_reconfig_start(connection); |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2074 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2075 | mutex_lock(&connection->data.mutex); |
| 2076 | mutex_lock(&connection->conf_update); |
| 2077 | old_conf = connection->net_conf; |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 2078 | |
| 2079 | if (!old_conf) { |
| 2080 | drbd_msg_put_info("net conf missing, try connect"); |
| 2081 | retcode = ERR_INVALID_REQUEST; |
Philipp Reisner | 91fd4da | 2011-04-20 17:47:29 +0200 | [diff] [blame] | 2082 | goto fail; |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 2083 | } |
| 2084 | |
| 2085 | *new_conf = *old_conf; |
Lars Ellenberg | 5979e36 | 2011-04-27 21:09:55 +0200 | [diff] [blame] | 2086 | if (should_set_defaults(info)) |
Andreas Gruenbacher | b966b5d | 2011-05-03 14:56:09 +0200 | [diff] [blame] | 2087 | set_net_conf_defaults(new_conf); |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 2088 | |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2089 | err = net_conf_from_attrs_for_change(new_conf, info); |
Andreas Gruenbacher | c75b9b1 | 2011-05-24 14:18:31 +0200 | [diff] [blame] | 2090 | if (err && err != -ENOMSG) { |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2091 | retcode = ERR_MANDATORY_TAG; |
| 2092 | drbd_msg_put_info(from_attrs_err_to_txt(err)); |
| 2093 | goto fail; |
| 2094 | } |
| 2095 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2096 | retcode = check_net_options(connection, new_conf); |
Philipp Reisner | cd64397 | 2011-04-13 18:00:59 -0700 | [diff] [blame] | 2097 | if (retcode != NO_ERROR) |
| 2098 | goto fail; |
| 2099 | |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2100 | /* re-sync running */ |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2101 | rsr = conn_resync_running(connection); |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2102 | if (rsr && strcmp(new_conf->csums_alg, old_conf->csums_alg)) { |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2103 | retcode = ERR_CSUMS_RESYNC_RUNNING; |
Philipp Reisner | 91fd4da | 2011-04-20 17:47:29 +0200 | [diff] [blame] | 2104 | goto fail; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2105 | } |
| 2106 | |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2107 | /* online verify running */ |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2108 | ovr = conn_ov_running(connection); |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2109 | if (ovr && strcmp(new_conf->verify_alg, old_conf->verify_alg)) { |
| 2110 | retcode = ERR_VERIFY_RUNNING; |
| 2111 | goto fail; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2112 | } |
| 2113 | |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2114 | retcode = alloc_crypto(&crypto, new_conf); |
| 2115 | if (retcode != NO_ERROR) |
| 2116 | goto fail; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2117 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2118 | rcu_assign_pointer(connection->net_conf, new_conf); |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2119 | |
| 2120 | if (!rsr) { |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2121 | crypto_free_hash(connection->csums_tfm); |
| 2122 | connection->csums_tfm = crypto.csums_tfm; |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2123 | crypto.csums_tfm = NULL; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2124 | } |
| 2125 | if (!ovr) { |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2126 | crypto_free_hash(connection->verify_tfm); |
| 2127 | connection->verify_tfm = crypto.verify_tfm; |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2128 | crypto.verify_tfm = NULL; |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2129 | } |
| 2130 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2131 | crypto_free_hash(connection->integrity_tfm); |
| 2132 | connection->integrity_tfm = crypto.integrity_tfm; |
| 2133 | if (connection->cstate >= C_WF_REPORT_PARAMS && connection->agreed_pro_version >= 100) |
| 2134 | /* Do this without trying to take connection->data.mutex again. */ |
| 2135 | __drbd_send_protocol(connection, P_PROTOCOL_UPDATE); |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2136 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2137 | crypto_free_hash(connection->cram_hmac_tfm); |
| 2138 | connection->cram_hmac_tfm = crypto.cram_hmac_tfm; |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2139 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2140 | mutex_unlock(&connection->conf_update); |
| 2141 | mutex_unlock(&connection->data.mutex); |
Philipp Reisner | 91fd4da | 2011-04-20 17:47:29 +0200 | [diff] [blame] | 2142 | synchronize_rcu(); |
| 2143 | kfree(old_conf); |
| 2144 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2145 | if (connection->cstate >= C_WF_REPORT_PARAMS) |
| 2146 | drbd_send_sync_param(minor_to_device(conn_lowest_minor(connection))); |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2147 | |
Philipp Reisner | 91fd4da | 2011-04-20 17:47:29 +0200 | [diff] [blame] | 2148 | goto done; |
| 2149 | |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2150 | fail: |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2151 | mutex_unlock(&connection->conf_update); |
| 2152 | mutex_unlock(&connection->data.mutex); |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2153 | free_crypto(&crypto); |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2154 | kfree(new_conf); |
Philipp Reisner | 91fd4da | 2011-04-20 17:47:29 +0200 | [diff] [blame] | 2155 | done: |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2156 | conn_reconfig_done(connection); |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2157 | out: |
| 2158 | drbd_adm_finish(info, retcode); |
| 2159 | return 0; |
| 2160 | } |
| 2161 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2162 | int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2163 | { |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 2164 | struct drbd_peer_device *peer_device; |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 2165 | struct net_conf *old_conf, *new_conf = NULL; |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2166 | struct crypto crypto = { }; |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 2167 | struct drbd_resource *resource; |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2168 | struct drbd_connection *connection; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2169 | enum drbd_ret_code retcode; |
| 2170 | int i; |
| 2171 | int err; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2172 | |
Andreas Gruenbacher | 44e52cf | 2011-06-14 16:07:32 +0200 | [diff] [blame] | 2173 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_RESOURCE); |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 2174 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2175 | if (!adm_ctx.reply_skb) |
| 2176 | return retcode; |
| 2177 | if (retcode != NO_ERROR) |
| 2178 | goto out; |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 2179 | if (!(adm_ctx.my_addr && adm_ctx.peer_addr)) { |
| 2180 | drbd_msg_put_info("connection endpoint(s) missing"); |
| 2181 | retcode = ERR_INVALID_REQUEST; |
| 2182 | goto out; |
| 2183 | } |
| 2184 | |
| 2185 | /* No need for _rcu here. All reconfiguration is |
| 2186 | * strictly serialized on genl_lock(). We are protected against |
| 2187 | * concurrent reconfiguration/addition/deletion */ |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 2188 | for_each_resource(resource, &drbd_resources) { |
| 2189 | for_each_connection(connection, resource) { |
| 2190 | if (nla_len(adm_ctx.my_addr) == connection->my_addr_len && |
| 2191 | !memcmp(nla_data(adm_ctx.my_addr), &connection->my_addr, |
| 2192 | connection->my_addr_len)) { |
| 2193 | retcode = ERR_LOCAL_ADDR; |
| 2194 | goto out; |
| 2195 | } |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 2196 | |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 2197 | if (nla_len(adm_ctx.peer_addr) == connection->peer_addr_len && |
| 2198 | !memcmp(nla_data(adm_ctx.peer_addr), &connection->peer_addr, |
| 2199 | connection->peer_addr_len)) { |
| 2200 | retcode = ERR_PEER_ADDR; |
| 2201 | goto out; |
| 2202 | } |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 2203 | } |
| 2204 | } |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2205 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2206 | connection = adm_ctx.connection; |
| 2207 | conn_reconfig_start(connection); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2208 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2209 | if (connection->cstate > C_STANDALONE) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2210 | retcode = ERR_NET_CONFIGURED; |
| 2211 | goto fail; |
| 2212 | } |
| 2213 | |
Andreas Gruenbacher | a209b4a | 2011-08-17 12:43:25 +0200 | [diff] [blame] | 2214 | /* allocation not in the IO path, drbdsetup / netlink process context */ |
Lars Ellenberg | 5979e36 | 2011-04-27 21:09:55 +0200 | [diff] [blame] | 2215 | new_conf = kzalloc(sizeof(*new_conf), GFP_KERNEL); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2216 | if (!new_conf) { |
| 2217 | retcode = ERR_NOMEM; |
| 2218 | goto fail; |
| 2219 | } |
| 2220 | |
Andreas Gruenbacher | b966b5d | 2011-05-03 14:56:09 +0200 | [diff] [blame] | 2221 | set_net_conf_defaults(new_conf); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2222 | |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2223 | err = net_conf_from_attrs(new_conf, info); |
Lars Ellenberg | 25e4093 | 2011-08-19 10:39:00 +0200 | [diff] [blame] | 2224 | if (err && err != -ENOMSG) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2225 | retcode = ERR_MANDATORY_TAG; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2226 | drbd_msg_put_info(from_attrs_err_to_txt(err)); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2227 | goto fail; |
| 2228 | } |
| 2229 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2230 | retcode = check_net_options(connection, new_conf); |
Philipp Reisner | cd64397 | 2011-04-13 18:00:59 -0700 | [diff] [blame] | 2231 | if (retcode != NO_ERROR) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2232 | goto fail; |
Philipp Reisner | 47ff2d0 | 2010-06-18 13:56:57 +0200 | [diff] [blame] | 2233 | |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2234 | retcode = alloc_crypto(&crypto, new_conf); |
| 2235 | if (retcode != NO_ERROR) |
Philipp Reisner | 422028b | 2010-10-27 11:12:07 +0200 | [diff] [blame] | 2236 | goto fail; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2237 | |
| 2238 | ((char *)new_conf->shared_secret)[SHARED_SECRET_MAX-1] = 0; |
| 2239 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2240 | conn_flush_workqueue(connection); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2241 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2242 | mutex_lock(&connection->conf_update); |
| 2243 | old_conf = connection->net_conf; |
Philipp Reisner | 91fd4da | 2011-04-20 17:47:29 +0200 | [diff] [blame] | 2244 | if (old_conf) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2245 | retcode = ERR_NET_CONFIGURED; |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2246 | mutex_unlock(&connection->conf_update); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2247 | goto fail; |
| 2248 | } |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2249 | rcu_assign_pointer(connection->net_conf, new_conf); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2250 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2251 | conn_free_crypto(connection); |
| 2252 | connection->cram_hmac_tfm = crypto.cram_hmac_tfm; |
| 2253 | connection->integrity_tfm = crypto.integrity_tfm; |
| 2254 | connection->csums_tfm = crypto.csums_tfm; |
| 2255 | connection->verify_tfm = crypto.verify_tfm; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2256 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2257 | connection->my_addr_len = nla_len(adm_ctx.my_addr); |
| 2258 | memcpy(&connection->my_addr, nla_data(adm_ctx.my_addr), connection->my_addr_len); |
| 2259 | connection->peer_addr_len = nla_len(adm_ctx.peer_addr); |
| 2260 | memcpy(&connection->peer_addr, nla_data(adm_ctx.peer_addr), connection->peer_addr_len); |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 2261 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2262 | mutex_unlock(&connection->conf_update); |
Philipp Reisner | 91fd4da | 2011-04-20 17:47:29 +0200 | [diff] [blame] | 2263 | |
Philipp Reisner | 695d08f | 2011-04-11 22:53:32 -0700 | [diff] [blame] | 2264 | rcu_read_lock(); |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 2265 | idr_for_each_entry(&connection->peer_devices, peer_device, i) { |
| 2266 | struct drbd_device *device = peer_device->device; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2267 | device->send_cnt = 0; |
| 2268 | device->recv_cnt = 0; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2269 | } |
Philipp Reisner | 695d08f | 2011-04-11 22:53:32 -0700 | [diff] [blame] | 2270 | rcu_read_unlock(); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2271 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2272 | retcode = conn_request_state(connection, NS(conn, C_UNCONNECTED), CS_VERBOSE); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2273 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2274 | conn_reconfig_done(connection); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2275 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2276 | return 0; |
| 2277 | |
| 2278 | fail: |
Philipp Reisner | 0fd0ea0 | 2011-04-27 11:27:47 +0200 | [diff] [blame] | 2279 | free_crypto(&crypto); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2280 | kfree(new_conf); |
| 2281 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2282 | conn_reconfig_done(connection); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2283 | out: |
| 2284 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2285 | return 0; |
| 2286 | } |
| 2287 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2288 | static enum drbd_state_rv conn_try_disconnect(struct drbd_connection *connection, bool force) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2289 | { |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 2290 | enum drbd_state_rv rv; |
Philipp Reisner | 2561b9c | 2010-12-03 15:22:48 +0100 | [diff] [blame] | 2291 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2292 | rv = conn_request_state(connection, NS(conn, C_DISCONNECTING), |
Lars Ellenberg | f3dfa40 | 2011-05-02 10:45:05 +0200 | [diff] [blame] | 2293 | force ? CS_HARD : 0); |
Philipp Reisner | 2561b9c | 2010-12-03 15:22:48 +0100 | [diff] [blame] | 2294 | |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 2295 | switch (rv) { |
| 2296 | case SS_NOTHING_TO_DO: |
Lars Ellenberg | f3dfa40 | 2011-05-02 10:45:05 +0200 | [diff] [blame] | 2297 | break; |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 2298 | case SS_ALREADY_STANDALONE: |
| 2299 | return SS_SUCCESS; |
| 2300 | case SS_PRIMARY_NOP: |
| 2301 | /* Our state checking code wants to see the peer outdated. */ |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2302 | rv = conn_request_state(connection, NS2(conn, C_DISCONNECTING, pdsk, D_OUTDATED), 0); |
Philipp Reisner | 2bd5ed5 | 2013-03-27 14:08:40 +0100 | [diff] [blame] | 2303 | |
| 2304 | if (rv == SS_OUTDATE_WO_CONN) /* lost connection before graceful disconnect succeeded */ |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2305 | rv = conn_request_state(connection, NS(conn, C_DISCONNECTING), CS_VERBOSE); |
Philipp Reisner | 2bd5ed5 | 2013-03-27 14:08:40 +0100 | [diff] [blame] | 2306 | |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 2307 | break; |
| 2308 | case SS_CW_FAILED_BY_PEER: |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2309 | /* The peer probably wants to see us outdated. */ |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2310 | rv = conn_request_state(connection, NS2(conn, C_DISCONNECTING, |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 2311 | disk, D_OUTDATED), 0); |
| 2312 | if (rv == SS_IS_DISKLESS || rv == SS_LOWER_THAN_OUTDATED) { |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2313 | rv = conn_request_state(connection, NS(conn, C_DISCONNECTING), |
Lars Ellenberg | f3dfa40 | 2011-05-02 10:45:05 +0200 | [diff] [blame] | 2314 | CS_HARD); |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 2315 | } |
| 2316 | break; |
| 2317 | default:; |
| 2318 | /* no special handling necessary */ |
| 2319 | } |
| 2320 | |
Lars Ellenberg | f3dfa40 | 2011-05-02 10:45:05 +0200 | [diff] [blame] | 2321 | if (rv >= SS_SUCCESS) { |
| 2322 | enum drbd_state_rv rv2; |
| 2323 | /* No one else can reconfigure the network while I am here. |
| 2324 | * The state handling only uses drbd_thread_stop_nowait(), |
| 2325 | * we want to really wait here until the receiver is no more. |
| 2326 | */ |
Andreas Gruenbacher | 9693da2 | 2011-06-21 13:58:18 +0200 | [diff] [blame] | 2327 | drbd_thread_stop(&connection->receiver); |
Lars Ellenberg | f3dfa40 | 2011-05-02 10:45:05 +0200 | [diff] [blame] | 2328 | |
| 2329 | /* Race breaker. This additional state change request may be |
| 2330 | * necessary, if this was a forced disconnect during a receiver |
| 2331 | * restart. We may have "killed" the receiver thread just |
| 2332 | * after drbdd_init() returned. Typically, we should be |
| 2333 | * C_STANDALONE already, now, and this becomes a no-op. |
| 2334 | */ |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2335 | rv2 = conn_request_state(connection, NS(conn, C_STANDALONE), |
Lars Ellenberg | f3dfa40 | 2011-05-02 10:45:05 +0200 | [diff] [blame] | 2336 | CS_VERBOSE | CS_HARD); |
| 2337 | if (rv2 < SS_SUCCESS) |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2338 | conn_err(connection, |
Lars Ellenberg | f3dfa40 | 2011-05-02 10:45:05 +0200 | [diff] [blame] | 2339 | "unexpected rv2=%d in conn_try_disconnect()\n", |
| 2340 | rv2); |
| 2341 | } |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 2342 | return rv; |
| 2343 | } |
| 2344 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2345 | int drbd_adm_disconnect(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2346 | { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2347 | struct disconnect_parms parms; |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2348 | struct drbd_connection *connection; |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 2349 | enum drbd_state_rv rv; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2350 | enum drbd_ret_code retcode; |
| 2351 | int err; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2352 | |
Andreas Gruenbacher | 089c075 | 2011-06-14 18:28:09 +0200 | [diff] [blame] | 2353 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_CONNECTION); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2354 | if (!adm_ctx.reply_skb) |
| 2355 | return retcode; |
| 2356 | if (retcode != NO_ERROR) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2357 | goto fail; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2358 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2359 | connection = adm_ctx.connection; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2360 | memset(&parms, 0, sizeof(parms)); |
| 2361 | if (info->attrs[DRBD_NLA_DISCONNECT_PARMS]) { |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2362 | err = disconnect_parms_from_attrs(&parms, info); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2363 | if (err) { |
| 2364 | retcode = ERR_MANDATORY_TAG; |
| 2365 | drbd_msg_put_info(from_attrs_err_to_txt(err)); |
| 2366 | goto fail; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2367 | } |
| 2368 | } |
| 2369 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2370 | rv = conn_try_disconnect(connection, parms.force_disconnect); |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 2371 | if (rv < SS_SUCCESS) |
Lars Ellenberg | f3dfa40 | 2011-05-02 10:45:05 +0200 | [diff] [blame] | 2372 | retcode = rv; /* FIXME: Type mismatch. */ |
| 2373 | else |
| 2374 | retcode = NO_ERROR; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2375 | fail: |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2376 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2377 | return 0; |
| 2378 | } |
| 2379 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2380 | void resync_after_online_grow(struct drbd_device *device) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2381 | { |
| 2382 | int iass; /* I am sync source */ |
| 2383 | |
| 2384 | dev_info(DEV, "Resync of new storage after online grow\n"); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2385 | if (device->state.role != device->state.peer) |
| 2386 | iass = (device->state.role == R_PRIMARY); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2387 | else |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 2388 | iass = test_bit(RESOLVE_CONFLICTS, &first_peer_device(device)->connection->flags); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2389 | |
| 2390 | if (iass) |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2391 | drbd_start_resync(device, C_SYNC_SOURCE); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2392 | else |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2393 | _drbd_request_state(device, NS(conn, C_WF_SYNC_UUID), CS_VERBOSE + CS_SERIALIZE); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2394 | } |
| 2395 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2396 | int drbd_adm_resize(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2397 | { |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 2398 | struct disk_conf *old_disk_conf, *new_disk_conf = NULL; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2399 | struct resize_parms rs; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2400 | struct drbd_device *device; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2401 | enum drbd_ret_code retcode; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2402 | enum determine_dev_size dd; |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 2403 | bool change_al_layout = false; |
Philipp Reisner | 6495d2c | 2010-03-24 16:07:04 +0100 | [diff] [blame] | 2404 | enum dds_flags ddsf; |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 2405 | sector_t u_size; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2406 | int err; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2407 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2408 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR); |
| 2409 | if (!adm_ctx.reply_skb) |
| 2410 | return retcode; |
| 2411 | if (retcode != NO_ERROR) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2412 | goto fail; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2413 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2414 | device = adm_ctx.device; |
| 2415 | if (!get_ldev(device)) { |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 2416 | retcode = ERR_NO_DISK; |
| 2417 | goto fail; |
| 2418 | } |
| 2419 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2420 | memset(&rs, 0, sizeof(struct resize_parms)); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2421 | rs.al_stripes = device->ldev->md.al_stripes; |
| 2422 | rs.al_stripe_size = device->ldev->md.al_stripe_size_4k * 4; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2423 | if (info->attrs[DRBD_NLA_RESIZE_PARMS]) { |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2424 | err = resize_parms_from_attrs(&rs, info); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2425 | if (err) { |
| 2426 | retcode = ERR_MANDATORY_TAG; |
| 2427 | drbd_msg_put_info(from_attrs_err_to_txt(err)); |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 2428 | goto fail_ldev; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2429 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2430 | } |
| 2431 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2432 | if (device->state.conn > C_CONNECTED) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2433 | retcode = ERR_RESIZE_RESYNC; |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 2434 | goto fail_ldev; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2435 | } |
| 2436 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2437 | if (device->state.role == R_SECONDARY && |
| 2438 | device->state.peer == R_SECONDARY) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2439 | retcode = ERR_NO_PRIMARY; |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 2440 | goto fail_ldev; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2441 | } |
| 2442 | |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 2443 | if (rs.no_resync && first_peer_device(device)->connection->agreed_pro_version < 93) { |
Philipp Reisner | 6495d2c | 2010-03-24 16:07:04 +0100 | [diff] [blame] | 2444 | retcode = ERR_NEED_APV_93; |
Andreas Gruenbacher | 7b4e4d3 | 2011-09-28 22:15:04 +0200 | [diff] [blame] | 2445 | goto fail_ldev; |
Philipp Reisner | 6495d2c | 2010-03-24 16:07:04 +0100 | [diff] [blame] | 2446 | } |
| 2447 | |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 2448 | rcu_read_lock(); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2449 | u_size = rcu_dereference(device->ldev->disk_conf)->disk_size; |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 2450 | rcu_read_unlock(); |
| 2451 | if (u_size != (sector_t)rs.resize_size) { |
| 2452 | new_disk_conf = kmalloc(sizeof(struct disk_conf), GFP_KERNEL); |
| 2453 | if (!new_disk_conf) { |
| 2454 | retcode = ERR_NOMEM; |
Philipp Reisner | 9bcd252 | 2011-09-29 13:00:14 +0200 | [diff] [blame] | 2455 | goto fail_ldev; |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 2456 | } |
| 2457 | } |
| 2458 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2459 | if (device->ldev->md.al_stripes != rs.al_stripes || |
| 2460 | device->ldev->md.al_stripe_size_4k != rs.al_stripe_size / 4) { |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 2461 | u32 al_size_k = rs.al_stripes * rs.al_stripe_size; |
| 2462 | |
| 2463 | if (al_size_k > (16 * 1024 * 1024)) { |
| 2464 | retcode = ERR_MD_LAYOUT_TOO_BIG; |
| 2465 | goto fail_ldev; |
| 2466 | } |
| 2467 | |
| 2468 | if (al_size_k < MD_32kB_SECT/2) { |
| 2469 | retcode = ERR_MD_LAYOUT_TOO_SMALL; |
| 2470 | goto fail_ldev; |
| 2471 | } |
| 2472 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2473 | if (device->state.conn != C_CONNECTED) { |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 2474 | retcode = ERR_MD_LAYOUT_CONNECTED; |
| 2475 | goto fail_ldev; |
| 2476 | } |
| 2477 | |
| 2478 | change_al_layout = true; |
| 2479 | } |
| 2480 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2481 | if (device->ldev->known_size != drbd_get_capacity(device->ldev->backing_bdev)) |
| 2482 | device->ldev->known_size = drbd_get_capacity(device->ldev->backing_bdev); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2483 | |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 2484 | if (new_disk_conf) { |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 2485 | mutex_lock(&first_peer_device(device)->connection->conf_update); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2486 | old_disk_conf = device->ldev->disk_conf; |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 2487 | *new_disk_conf = *old_disk_conf; |
| 2488 | new_disk_conf->disk_size = (sector_t)rs.resize_size; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2489 | rcu_assign_pointer(device->ldev->disk_conf, new_disk_conf); |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 2490 | mutex_unlock(&first_peer_device(device)->connection->conf_update); |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 2491 | synchronize_rcu(); |
| 2492 | kfree(old_disk_conf); |
| 2493 | } |
| 2494 | |
Philipp Reisner | 6495d2c | 2010-03-24 16:07:04 +0100 | [diff] [blame] | 2495 | ddsf = (rs.resize_force ? DDSF_FORCED : 0) | (rs.no_resync ? DDSF_NO_RESYNC : 0); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2496 | dd = drbd_determine_dev_size(device, ddsf, change_al_layout ? &rs : NULL); |
| 2497 | drbd_md_sync(device); |
| 2498 | put_ldev(device); |
Philipp Reisner | e96c963 | 2013-06-25 16:50:07 +0200 | [diff] [blame] | 2499 | if (dd == DS_ERROR) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2500 | retcode = ERR_NOMEM_BITMAP; |
| 2501 | goto fail; |
Philipp Reisner | d752b26 | 2013-06-25 16:50:08 +0200 | [diff] [blame] | 2502 | } else if (dd == DS_ERROR_SPACE_MD) { |
| 2503 | retcode = ERR_MD_LAYOUT_NO_FIT; |
| 2504 | goto fail; |
| 2505 | } else if (dd == DS_ERROR_SHRINK) { |
| 2506 | retcode = ERR_IMPLICIT_SHRINK; |
| 2507 | goto fail; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2508 | } |
| 2509 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2510 | if (device->state.conn == C_CONNECTED) { |
Philipp Reisner | e96c963 | 2013-06-25 16:50:07 +0200 | [diff] [blame] | 2511 | if (dd == DS_GREW) |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2512 | set_bit(RESIZE_PENDING, &device->flags); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2513 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2514 | drbd_send_uuids(device); |
| 2515 | drbd_send_sizes(device, 1, ddsf); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2516 | } |
| 2517 | |
| 2518 | fail: |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2519 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2520 | return 0; |
Andreas Gruenbacher | 7b4e4d3 | 2011-09-28 22:15:04 +0200 | [diff] [blame] | 2521 | |
| 2522 | fail_ldev: |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2523 | put_ldev(device); |
Andreas Gruenbacher | 7b4e4d3 | 2011-09-28 22:15:04 +0200 | [diff] [blame] | 2524 | goto fail; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2525 | } |
| 2526 | |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2527 | int drbd_adm_resource_opts(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2528 | { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2529 | enum drbd_ret_code retcode; |
Lars Ellenberg | b57a1e2 | 2011-04-27 21:17:33 +0200 | [diff] [blame] | 2530 | struct res_opts res_opts; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2531 | int err; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2532 | |
Andreas Gruenbacher | 44e52cf | 2011-06-14 16:07:32 +0200 | [diff] [blame] | 2533 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_RESOURCE); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2534 | if (!adm_ctx.reply_skb) |
| 2535 | return retcode; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2536 | if (retcode != NO_ERROR) |
| 2537 | goto fail; |
| 2538 | |
Andreas Gruenbacher | eb6bea6 | 2011-06-21 16:11:28 +0200 | [diff] [blame] | 2539 | res_opts = adm_ctx.resource->res_opts; |
Lars Ellenberg | 5979e36 | 2011-04-27 21:09:55 +0200 | [diff] [blame] | 2540 | if (should_set_defaults(info)) |
Andreas Gruenbacher | b966b5d | 2011-05-03 14:56:09 +0200 | [diff] [blame] | 2541 | set_res_opts_defaults(&res_opts); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2542 | |
Lars Ellenberg | b57a1e2 | 2011-04-27 21:17:33 +0200 | [diff] [blame] | 2543 | err = res_opts_from_attrs(&res_opts, info); |
Andreas Gruenbacher | c75b9b1 | 2011-05-24 14:18:31 +0200 | [diff] [blame] | 2544 | if (err && err != -ENOMSG) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2545 | retcode = ERR_MANDATORY_TAG; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2546 | drbd_msg_put_info(from_attrs_err_to_txt(err)); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2547 | goto fail; |
| 2548 | } |
| 2549 | |
Andreas Gruenbacher | eb6bea6 | 2011-06-21 16:11:28 +0200 | [diff] [blame] | 2550 | err = set_resource_options(adm_ctx.resource, &res_opts); |
Andreas Gruenbacher | afbbfa8 | 2011-06-16 17:58:02 +0200 | [diff] [blame] | 2551 | if (err) { |
| 2552 | retcode = ERR_INVALID_REQUEST; |
| 2553 | if (err == -ENOMEM) |
Philipp Reisner | 778f271 | 2010-07-06 11:14:00 +0200 | [diff] [blame] | 2554 | retcode = ERR_NOMEM; |
Philipp Reisner | 778f271 | 2010-07-06 11:14:00 +0200 | [diff] [blame] | 2555 | } |
| 2556 | |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2557 | fail: |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2558 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2559 | return 0; |
| 2560 | } |
| 2561 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2562 | int drbd_adm_invalidate(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2563 | { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2564 | struct drbd_device *device; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2565 | int retcode; /* enum drbd_ret_code rsp. enum drbd_state_rv */ |
| 2566 | |
| 2567 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR); |
| 2568 | if (!adm_ctx.reply_skb) |
| 2569 | return retcode; |
| 2570 | if (retcode != NO_ERROR) |
| 2571 | goto out; |
| 2572 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2573 | device = adm_ctx.device; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2574 | |
Lars Ellenberg | 194bfb3 | 2011-01-18 10:38:01 +0100 | [diff] [blame] | 2575 | /* If there is still bitmap IO pending, probably because of a previous |
Lars Ellenberg | 7ee1fb9 | 2012-06-19 10:27:58 +0200 | [diff] [blame] | 2576 | * resync just being finished, wait for it before requesting a new resync. |
| 2577 | * Also wait for it's after_state_ch(). */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2578 | drbd_suspend_io(device); |
| 2579 | wait_event(device->misc_wait, !test_bit(BITMAP_IO, &device->flags)); |
| 2580 | drbd_flush_workqueue(device); |
Lars Ellenberg | 194bfb3 | 2011-01-18 10:38:01 +0100 | [diff] [blame] | 2581 | |
Philipp Reisner | 0b2dafc | 2013-03-27 14:08:38 +0100 | [diff] [blame] | 2582 | /* If we happen to be C_STANDALONE R_SECONDARY, just change to |
| 2583 | * D_INCONSISTENT, and set all bits in the bitmap. Otherwise, |
| 2584 | * try to start a resync handshake as sync target for full sync. |
Philipp Reisner | 9376d9f | 2013-03-27 14:08:36 +0100 | [diff] [blame] | 2585 | */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2586 | if (device->state.conn == C_STANDALONE && device->state.role == R_SECONDARY) { |
| 2587 | retcode = drbd_request_state(device, NS(disk, D_INCONSISTENT)); |
Philipp Reisner | 0b2dafc | 2013-03-27 14:08:38 +0100 | [diff] [blame] | 2588 | if (retcode >= SS_SUCCESS) { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2589 | if (drbd_bitmap_io(device, &drbd_bmio_set_n_write, |
Philipp Reisner | 0b2dafc | 2013-03-27 14:08:38 +0100 | [diff] [blame] | 2590 | "set_n_write from invalidate", BM_LOCKED_MASK)) |
| 2591 | retcode = ERR_IO_MD_DISK; |
| 2592 | } |
| 2593 | } else |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2594 | retcode = drbd_request_state(device, NS(conn, C_STARTING_SYNC_T)); |
| 2595 | drbd_resume_io(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2596 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2597 | out: |
| 2598 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2599 | return 0; |
| 2600 | } |
| 2601 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2602 | static int drbd_adm_simple_request_state(struct sk_buff *skb, struct genl_info *info, |
| 2603 | union drbd_state mask, union drbd_state val) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2604 | { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2605 | enum drbd_ret_code retcode; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2606 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2607 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR); |
| 2608 | if (!adm_ctx.reply_skb) |
| 2609 | return retcode; |
| 2610 | if (retcode != NO_ERROR) |
| 2611 | goto out; |
Lars Ellenberg | 194bfb3 | 2011-01-18 10:38:01 +0100 | [diff] [blame] | 2612 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2613 | retcode = drbd_request_state(adm_ctx.device, mask, val); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2614 | out: |
| 2615 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2616 | return 0; |
| 2617 | } |
| 2618 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2619 | static int drbd_bmio_set_susp_al(struct drbd_device *device) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2620 | { |
| 2621 | int rv; |
| 2622 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2623 | rv = drbd_bmio_set_n_write(device); |
| 2624 | drbd_suspend_al(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2625 | return rv; |
| 2626 | } |
| 2627 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2628 | int drbd_adm_invalidate_peer(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2629 | { |
Philipp Reisner | 25b0d6c | 2012-02-14 12:12:35 +0100 | [diff] [blame] | 2630 | int retcode; /* drbd_ret_code, drbd_state_rv */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2631 | struct drbd_device *device; |
Philipp Reisner | 25b0d6c | 2012-02-14 12:12:35 +0100 | [diff] [blame] | 2632 | |
| 2633 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR); |
| 2634 | if (!adm_ctx.reply_skb) |
| 2635 | return retcode; |
| 2636 | if (retcode != NO_ERROR) |
| 2637 | goto out; |
| 2638 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2639 | device = adm_ctx.device; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2640 | |
| 2641 | /* If there is still bitmap IO pending, probably because of a previous |
Lars Ellenberg | 7ee1fb9 | 2012-06-19 10:27:58 +0200 | [diff] [blame] | 2642 | * resync just being finished, wait for it before requesting a new resync. |
| 2643 | * Also wait for it's after_state_ch(). */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2644 | drbd_suspend_io(device); |
| 2645 | wait_event(device->misc_wait, !test_bit(BITMAP_IO, &device->flags)); |
| 2646 | drbd_flush_workqueue(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2647 | |
Philipp Reisner | 0b2dafc | 2013-03-27 14:08:38 +0100 | [diff] [blame] | 2648 | /* If we happen to be C_STANDALONE R_PRIMARY, just set all bits |
| 2649 | * in the bitmap. Otherwise, try to start a resync handshake |
| 2650 | * as sync source for full sync. |
| 2651 | */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2652 | if (device->state.conn == C_STANDALONE && device->state.role == R_PRIMARY) { |
Philipp Reisner | 0b2dafc | 2013-03-27 14:08:38 +0100 | [diff] [blame] | 2653 | /* The peer will get a resync upon connect anyways. Just make that |
| 2654 | into a full resync. */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2655 | retcode = drbd_request_state(device, NS(pdsk, D_INCONSISTENT)); |
Philipp Reisner | 0b2dafc | 2013-03-27 14:08:38 +0100 | [diff] [blame] | 2656 | if (retcode >= SS_SUCCESS) { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2657 | if (drbd_bitmap_io(device, &drbd_bmio_set_susp_al, |
Philipp Reisner | 0b2dafc | 2013-03-27 14:08:38 +0100 | [diff] [blame] | 2658 | "set_n_write from invalidate_peer", |
| 2659 | BM_LOCKED_SET_ALLOWED)) |
| 2660 | retcode = ERR_IO_MD_DISK; |
| 2661 | } |
| 2662 | } else |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2663 | retcode = drbd_request_state(device, NS(conn, C_STARTING_SYNC_S)); |
| 2664 | drbd_resume_io(device); |
Philipp Reisner | 0778286 | 2010-08-31 12:00:50 +0200 | [diff] [blame] | 2665 | |
Philipp Reisner | 25b0d6c | 2012-02-14 12:12:35 +0100 | [diff] [blame] | 2666 | out: |
| 2667 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2668 | return 0; |
| 2669 | } |
| 2670 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2671 | int drbd_adm_pause_sync(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2672 | { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2673 | enum drbd_ret_code retcode; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2674 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2675 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR); |
| 2676 | if (!adm_ctx.reply_skb) |
| 2677 | return retcode; |
| 2678 | if (retcode != NO_ERROR) |
| 2679 | goto out; |
| 2680 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2681 | if (drbd_request_state(adm_ctx.device, NS(user_isp, 1)) == SS_NOTHING_TO_DO) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2682 | retcode = ERR_PAUSE_IS_SET; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2683 | out: |
| 2684 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2685 | return 0; |
| 2686 | } |
| 2687 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2688 | int drbd_adm_resume_sync(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2689 | { |
Philipp Reisner | da9fbc2 | 2011-03-29 10:52:01 +0200 | [diff] [blame] | 2690 | union drbd_dev_state s; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2691 | enum drbd_ret_code retcode; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2692 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2693 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR); |
| 2694 | if (!adm_ctx.reply_skb) |
| 2695 | return retcode; |
| 2696 | if (retcode != NO_ERROR) |
| 2697 | goto out; |
| 2698 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2699 | if (drbd_request_state(adm_ctx.device, NS(user_isp, 0)) == SS_NOTHING_TO_DO) { |
| 2700 | s = adm_ctx.device->state; |
Philipp Reisner | cd88d03 | 2011-01-20 11:46:41 +0100 | [diff] [blame] | 2701 | if (s.conn == C_PAUSED_SYNC_S || s.conn == C_PAUSED_SYNC_T) { |
| 2702 | retcode = s.aftr_isp ? ERR_PIC_AFTER_DEP : |
| 2703 | s.peer_isp ? ERR_PIC_PEER_DEP : ERR_PAUSE_IS_CLEAR; |
| 2704 | } else { |
| 2705 | retcode = ERR_PAUSE_IS_CLEAR; |
| 2706 | } |
| 2707 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2708 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2709 | out: |
| 2710 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2711 | return 0; |
| 2712 | } |
| 2713 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2714 | int drbd_adm_suspend_io(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2715 | { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2716 | return drbd_adm_simple_request_state(skb, info, NS(susp, 1)); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2717 | } |
| 2718 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2719 | int drbd_adm_resume_io(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2720 | { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2721 | struct drbd_device *device; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2722 | int retcode; /* enum drbd_ret_code rsp. enum drbd_state_rv */ |
| 2723 | |
| 2724 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR); |
| 2725 | if (!adm_ctx.reply_skb) |
| 2726 | return retcode; |
| 2727 | if (retcode != NO_ERROR) |
| 2728 | goto out; |
| 2729 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2730 | device = adm_ctx.device; |
| 2731 | if (test_bit(NEW_CUR_UUID, &device->flags)) { |
| 2732 | drbd_uuid_new_current(device); |
| 2733 | clear_bit(NEW_CUR_UUID, &device->flags); |
Philipp Reisner | 43a5182 | 2010-06-11 11:26:34 +0200 | [diff] [blame] | 2734 | } |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2735 | drbd_suspend_io(device); |
| 2736 | retcode = drbd_request_state(device, NS3(susp, 0, susp_nod, 0, susp_fen, 0)); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2737 | if (retcode == SS_SUCCESS) { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2738 | if (device->state.conn < C_CONNECTED) |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 2739 | tl_clear(first_peer_device(device)->connection); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2740 | if (device->state.disk == D_DISKLESS || device->state.disk == D_FAILED) |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 2741 | tl_restart(first_peer_device(device)->connection, FAIL_FROZEN_DISK_IO); |
Philipp Reisner | 265be2d | 2010-05-31 10:14:17 +0200 | [diff] [blame] | 2742 | } |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2743 | drbd_resume_io(device); |
Philipp Reisner | 265be2d | 2010-05-31 10:14:17 +0200 | [diff] [blame] | 2744 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2745 | out: |
| 2746 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2747 | return 0; |
| 2748 | } |
| 2749 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2750 | int drbd_adm_outdate(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2751 | { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2752 | return drbd_adm_simple_request_state(skb, info, NS(disk, D_OUTDATED)); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2753 | } |
| 2754 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2755 | static int nla_put_drbd_cfg_context(struct sk_buff *skb, struct drbd_connection *connection, unsigned vnr) |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 2756 | { |
| 2757 | struct nlattr *nla; |
| 2758 | nla = nla_nest_start(skb, DRBD_NLA_CFG_CONTEXT); |
| 2759 | if (!nla) |
| 2760 | goto nla_put_failure; |
Andreas Gruenbacher | 26ec928 | 2012-07-11 20:36:03 +0200 | [diff] [blame] | 2761 | if (vnr != VOLUME_UNSPECIFIED && |
| 2762 | nla_put_u32(skb, T_ctx_volume, vnr)) |
| 2763 | goto nla_put_failure; |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 2764 | if (nla_put_string(skb, T_ctx_resource_name, connection->resource->name)) |
Andreas Gruenbacher | 26ec928 | 2012-07-11 20:36:03 +0200 | [diff] [blame] | 2765 | goto nla_put_failure; |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2766 | if (connection->my_addr_len && |
| 2767 | nla_put(skb, T_ctx_my_addr, connection->my_addr_len, &connection->my_addr)) |
Andreas Gruenbacher | 26ec928 | 2012-07-11 20:36:03 +0200 | [diff] [blame] | 2768 | goto nla_put_failure; |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2769 | if (connection->peer_addr_len && |
| 2770 | nla_put(skb, T_ctx_peer_addr, connection->peer_addr_len, &connection->peer_addr)) |
Andreas Gruenbacher | 26ec928 | 2012-07-11 20:36:03 +0200 | [diff] [blame] | 2771 | goto nla_put_failure; |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 2772 | nla_nest_end(skb, nla); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2773 | return 0; |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 2774 | |
| 2775 | nla_put_failure: |
| 2776 | if (nla) |
| 2777 | nla_nest_cancel(skb, nla); |
| 2778 | return -EMSGSIZE; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2779 | } |
| 2780 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2781 | static int nla_put_status_info(struct sk_buff *skb, struct drbd_device *device, |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2782 | const struct sib_info *sib) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2783 | { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2784 | struct state_info *si = NULL; /* for sizeof(si->member); */ |
| 2785 | struct nlattr *nla; |
| 2786 | int got_ldev; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2787 | int err = 0; |
| 2788 | int exclude_sensitive; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2789 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2790 | /* If sib != NULL, this is drbd_bcast_event, which anyone can listen |
| 2791 | * to. So we better exclude_sensitive information. |
| 2792 | * |
| 2793 | * If sib == NULL, this is drbd_adm_get_status, executed synchronously |
| 2794 | * in the context of the requesting user process. Exclude sensitive |
| 2795 | * information, unless current has superuser. |
| 2796 | * |
| 2797 | * NOTE: for drbd_adm_get_status_all(), this is a netlink dump, and |
| 2798 | * relies on the current implementation of netlink_dump(), which |
| 2799 | * executes the dump callback successively from netlink_recvmsg(), |
| 2800 | * always in the context of the receiving process */ |
| 2801 | exclude_sensitive = sib || !capable(CAP_SYS_ADMIN); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2802 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2803 | got_ldev = get_ldev(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2804 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2805 | /* We need to add connection name and volume number information still. |
| 2806 | * Minor number is in drbd_genlmsghdr. */ |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 2807 | if (nla_put_drbd_cfg_context(skb, first_peer_device(device)->connection, device->vnr)) |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2808 | goto nla_put_failure; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2809 | |
Andreas Gruenbacher | eb6bea6 | 2011-06-21 16:11:28 +0200 | [diff] [blame] | 2810 | if (res_opts_to_skb(skb, &device->resource->res_opts, exclude_sensitive)) |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 2811 | goto nla_put_failure; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2812 | |
Philipp Reisner | daeda1c | 2011-05-03 15:00:55 +0200 | [diff] [blame] | 2813 | rcu_read_lock(); |
Andreas Gruenbacher | f9eb7bf | 2013-06-25 16:50:05 +0200 | [diff] [blame] | 2814 | if (got_ldev) { |
| 2815 | struct disk_conf *disk_conf; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2816 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2817 | disk_conf = rcu_dereference(device->ldev->disk_conf); |
Andreas Gruenbacher | f9eb7bf | 2013-06-25 16:50:05 +0200 | [diff] [blame] | 2818 | err = disk_conf_to_skb(skb, disk_conf, exclude_sensitive); |
| 2819 | } |
| 2820 | if (!err) { |
| 2821 | struct net_conf *nc; |
| 2822 | |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 2823 | nc = rcu_dereference(first_peer_device(device)->connection->net_conf); |
Andreas Gruenbacher | f9eb7bf | 2013-06-25 16:50:05 +0200 | [diff] [blame] | 2824 | if (nc) |
| 2825 | err = net_conf_to_skb(skb, nc, exclude_sensitive); |
| 2826 | } |
Philipp Reisner | 44ed167 | 2011-04-19 17:10:19 +0200 | [diff] [blame] | 2827 | rcu_read_unlock(); |
| 2828 | if (err) |
| 2829 | goto nla_put_failure; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2830 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2831 | nla = nla_nest_start(skb, DRBD_NLA_STATE_INFO); |
| 2832 | if (!nla) |
| 2833 | goto nla_put_failure; |
Andreas Gruenbacher | 26ec928 | 2012-07-11 20:36:03 +0200 | [diff] [blame] | 2834 | if (nla_put_u32(skb, T_sib_reason, sib ? sib->sib_reason : SIB_GET_STATUS_REPLY) || |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2835 | nla_put_u32(skb, T_current_state, device->state.i) || |
| 2836 | nla_put_u64(skb, T_ed_uuid, device->ed_uuid) || |
| 2837 | nla_put_u64(skb, T_capacity, drbd_get_capacity(device->this_bdev)) || |
| 2838 | nla_put_u64(skb, T_send_cnt, device->send_cnt) || |
| 2839 | nla_put_u64(skb, T_recv_cnt, device->recv_cnt) || |
| 2840 | nla_put_u64(skb, T_read_cnt, device->read_cnt) || |
| 2841 | nla_put_u64(skb, T_writ_cnt, device->writ_cnt) || |
| 2842 | nla_put_u64(skb, T_al_writ_cnt, device->al_writ_cnt) || |
| 2843 | nla_put_u64(skb, T_bm_writ_cnt, device->bm_writ_cnt) || |
| 2844 | nla_put_u32(skb, T_ap_bio_cnt, atomic_read(&device->ap_bio_cnt)) || |
| 2845 | nla_put_u32(skb, T_ap_pending_cnt, atomic_read(&device->ap_pending_cnt)) || |
| 2846 | nla_put_u32(skb, T_rs_pending_cnt, atomic_read(&device->rs_pending_cnt))) |
Andreas Gruenbacher | 26ec928 | 2012-07-11 20:36:03 +0200 | [diff] [blame] | 2847 | goto nla_put_failure; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2848 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2849 | if (got_ldev) { |
Philipp Reisner | 39a1aa7 | 2012-08-08 21:19:09 +0200 | [diff] [blame] | 2850 | int err; |
| 2851 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2852 | spin_lock_irq(&device->ldev->md.uuid_lock); |
| 2853 | err = nla_put(skb, T_uuids, sizeof(si->uuids), device->ldev->md.uuid); |
| 2854 | spin_unlock_irq(&device->ldev->md.uuid_lock); |
Philipp Reisner | 39a1aa7 | 2012-08-08 21:19:09 +0200 | [diff] [blame] | 2855 | |
| 2856 | if (err) |
| 2857 | goto nla_put_failure; |
| 2858 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2859 | if (nla_put_u32(skb, T_disk_flags, device->ldev->md.flags) || |
| 2860 | nla_put_u64(skb, T_bits_total, drbd_bm_bits(device)) || |
| 2861 | nla_put_u64(skb, T_bits_oos, drbd_bm_total_weight(device))) |
Andreas Gruenbacher | 26ec928 | 2012-07-11 20:36:03 +0200 | [diff] [blame] | 2862 | goto nla_put_failure; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2863 | if (C_SYNC_SOURCE <= device->state.conn && |
| 2864 | C_PAUSED_SYNC_T >= device->state.conn) { |
| 2865 | if (nla_put_u64(skb, T_bits_rs_total, device->rs_total) || |
| 2866 | nla_put_u64(skb, T_bits_rs_failed, device->rs_failed)) |
Andreas Gruenbacher | 26ec928 | 2012-07-11 20:36:03 +0200 | [diff] [blame] | 2867 | goto nla_put_failure; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2868 | } |
| 2869 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2870 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2871 | if (sib) { |
| 2872 | switch(sib->sib_reason) { |
| 2873 | case SIB_SYNC_PROGRESS: |
| 2874 | case SIB_GET_STATUS_REPLY: |
| 2875 | break; |
| 2876 | case SIB_STATE_CHANGE: |
Andreas Gruenbacher | 26ec928 | 2012-07-11 20:36:03 +0200 | [diff] [blame] | 2877 | if (nla_put_u32(skb, T_prev_state, sib->os.i) || |
| 2878 | nla_put_u32(skb, T_new_state, sib->ns.i)) |
| 2879 | goto nla_put_failure; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2880 | break; |
| 2881 | case SIB_HELPER_POST: |
Andreas Gruenbacher | 26ec928 | 2012-07-11 20:36:03 +0200 | [diff] [blame] | 2882 | if (nla_put_u32(skb, T_helper_exit_code, |
| 2883 | sib->helper_exit_code)) |
| 2884 | goto nla_put_failure; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2885 | /* fall through */ |
| 2886 | case SIB_HELPER_PRE: |
Andreas Gruenbacher | 26ec928 | 2012-07-11 20:36:03 +0200 | [diff] [blame] | 2887 | if (nla_put_string(skb, T_helper, sib->helper_name)) |
| 2888 | goto nla_put_failure; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2889 | break; |
| 2890 | } |
| 2891 | } |
| 2892 | nla_nest_end(skb, nla); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2893 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2894 | if (0) |
| 2895 | nla_put_failure: |
| 2896 | err = -EMSGSIZE; |
| 2897 | if (got_ldev) |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2898 | put_ldev(device); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2899 | return err; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2900 | } |
| 2901 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2902 | int drbd_adm_get_status(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2903 | { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2904 | enum drbd_ret_code retcode; |
| 2905 | int err; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2906 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2907 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR); |
| 2908 | if (!adm_ctx.reply_skb) |
| 2909 | return retcode; |
| 2910 | if (retcode != NO_ERROR) |
| 2911 | goto out; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2912 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2913 | err = nla_put_status_info(adm_ctx.reply_skb, adm_ctx.device, NULL); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2914 | if (err) { |
| 2915 | nlmsg_free(adm_ctx.reply_skb); |
| 2916 | return err; |
| 2917 | } |
| 2918 | out: |
| 2919 | drbd_adm_finish(info, retcode); |
| 2920 | return 0; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2921 | } |
| 2922 | |
Rashika Kheria | 4b7a530 | 2013-12-19 15:17:33 +0530 | [diff] [blame] | 2923 | static int get_one_status(struct sk_buff *skb, struct netlink_callback *cb) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2924 | { |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 2925 | struct drbd_peer_device *peer_device; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2926 | struct drbd_device *device; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2927 | struct drbd_genlmsghdr *dh; |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 2928 | struct drbd_resource *pos = (struct drbd_resource *)cb->args[0]; |
| 2929 | struct drbd_resource *resource = NULL; |
| 2930 | struct drbd_connection *connection; |
| 2931 | struct drbd_resource *tmp; |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 2932 | unsigned volume = cb->args[1]; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 2933 | |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 2934 | /* Open coded, deferred, iteration: |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 2935 | * for_each_resource_safe(resource, tmp, &drbd_resources) { |
| 2936 | * connection = "first connection of resource"; |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 2937 | * idr_for_each_entry(&connection->peer_devices, peer_device, i) { |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 2938 | * ... |
| 2939 | * } |
| 2940 | * } |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 2941 | * where resource is cb->args[0]; |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 2942 | * and i is cb->args[1]; |
| 2943 | * |
Lars Ellenberg | 71932ef | 2011-04-18 09:43:25 +0200 | [diff] [blame] | 2944 | * cb->args[2] indicates if we shall loop over all resources, |
| 2945 | * or just dump all volumes of a single resource. |
| 2946 | * |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2947 | * This may miss entries inserted after this dump started, |
| 2948 | * or entries deleted before they are reached. |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 2949 | * |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 2950 | * We need to make sure the device won't disappear while |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 2951 | * we are looking at it, and revalidate our iterators |
| 2952 | * on each iteration. |
| 2953 | */ |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2954 | |
Andreas Gruenbacher | 05a10ec | 2011-06-07 22:54:17 +0200 | [diff] [blame] | 2955 | /* synchronize with conn_create()/drbd_destroy_connection() */ |
Philipp Reisner | c141ebd | 2011-05-05 16:13:10 +0200 | [diff] [blame] | 2956 | rcu_read_lock(); |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 2957 | /* revalidate iterator position */ |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 2958 | for_each_resource_rcu(tmp, &drbd_resources) { |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 2959 | if (pos == NULL) { |
| 2960 | /* first iteration */ |
| 2961 | pos = tmp; |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 2962 | resource = pos; |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 2963 | break; |
| 2964 | } |
| 2965 | if (tmp == pos) { |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 2966 | resource = pos; |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 2967 | break; |
| 2968 | } |
| 2969 | } |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 2970 | if (resource) { |
| 2971 | next_resource: |
| 2972 | connection = first_connection(resource); |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 2973 | peer_device = idr_get_next(&connection->peer_devices, &volume); |
| 2974 | if (!peer_device) { |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 2975 | /* No more volumes to dump on this resource. |
| 2976 | * Advance resource iterator. */ |
| 2977 | pos = list_entry_rcu(resource->resources.next, |
| 2978 | struct drbd_resource, resources); |
| 2979 | /* Did we dump any volume of this resource yet? */ |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 2980 | if (volume != 0) { |
Lars Ellenberg | 71932ef | 2011-04-18 09:43:25 +0200 | [diff] [blame] | 2981 | /* If we reached the end of the list, |
| 2982 | * or only a single resource dump was requested, |
| 2983 | * we are done. */ |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 2984 | if (&pos->resources == &drbd_resources || cb->args[2]) |
Lars Ellenberg | 71932ef | 2011-04-18 09:43:25 +0200 | [diff] [blame] | 2985 | goto out; |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 2986 | volume = 0; |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 2987 | resource = pos; |
| 2988 | goto next_resource; |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 2989 | } |
| 2990 | } |
| 2991 | |
Philipp Reisner | 9868365 | 2012-11-09 14:18:43 +0100 | [diff] [blame] | 2992 | dh = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2993 | cb->nlh->nlmsg_seq, &drbd_genl_family, |
| 2994 | NLM_F_MULTI, DRBD_ADM_GET_STATUS); |
| 2995 | if (!dh) |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 2996 | goto out; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 2997 | |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 2998 | if (!peer_device) { |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 2999 | /* This is a connection without a single volume. |
Lars Ellenberg | 367d675d | 2011-07-11 23:49:55 +0200 | [diff] [blame] | 3000 | * Suprisingly enough, it may have a network |
| 3001 | * configuration. */ |
| 3002 | struct net_conf *nc; |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 3003 | dh->minor = -1U; |
| 3004 | dh->ret_code = NO_ERROR; |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 3005 | if (nla_put_drbd_cfg_context(skb, connection, VOLUME_UNSPECIFIED)) |
Lars Ellenberg | 367d675d | 2011-07-11 23:49:55 +0200 | [diff] [blame] | 3006 | goto cancel; |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 3007 | nc = rcu_dereference(connection->net_conf); |
Lars Ellenberg | 367d675d | 2011-07-11 23:49:55 +0200 | [diff] [blame] | 3008 | if (nc && net_conf_to_skb(skb, nc, 1) != 0) |
| 3009 | goto cancel; |
| 3010 | goto done; |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 3011 | } |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3012 | |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 3013 | device = peer_device->device; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3014 | D_ASSERT(device->vnr == volume); |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 3015 | D_ASSERT(first_peer_device(device)->connection == connection); |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 3016 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3017 | dh->minor = device_to_minor(device); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3018 | dh->ret_code = NO_ERROR; |
| 3019 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3020 | if (nla_put_status_info(skb, device, NULL)) { |
Lars Ellenberg | 367d675d | 2011-07-11 23:49:55 +0200 | [diff] [blame] | 3021 | cancel: |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3022 | genlmsg_cancel(skb, dh); |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 3023 | goto out; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3024 | } |
Lars Ellenberg | 367d675d | 2011-07-11 23:49:55 +0200 | [diff] [blame] | 3025 | done: |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3026 | genlmsg_end(skb, dh); |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 3027 | } |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3028 | |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 3029 | out: |
Philipp Reisner | c141ebd | 2011-05-05 16:13:10 +0200 | [diff] [blame] | 3030 | rcu_read_unlock(); |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 3031 | /* where to start the next iteration */ |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 3032 | cb->args[0] = (long)pos; |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 3033 | cb->args[1] = (pos == resource) ? volume + 1 : 0; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3034 | |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 3035 | /* No more resources/volumes/minors found results in an empty skb. |
Lars Ellenberg | 543cc10 | 2011-03-10 22:18:18 +0100 | [diff] [blame] | 3036 | * Which will terminate the dump. */ |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3037 | return skb->len; |
| 3038 | } |
| 3039 | |
Lars Ellenberg | 71932ef | 2011-04-18 09:43:25 +0200 | [diff] [blame] | 3040 | /* |
| 3041 | * Request status of all resources, or of all volumes within a single resource. |
| 3042 | * |
| 3043 | * This is a dump, as the answer may not fit in a single reply skb otherwise. |
| 3044 | * Which means we cannot use the family->attrbuf or other such members, because |
| 3045 | * dump is NOT protected by the genl_lock(). During dump, we only have access |
| 3046 | * to the incoming skb, and need to opencode "parsing" of the nlattr payload. |
| 3047 | * |
| 3048 | * Once things are setup properly, we call into get_one_status(). |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3049 | */ |
Lars Ellenberg | 71932ef | 2011-04-18 09:43:25 +0200 | [diff] [blame] | 3050 | int drbd_adm_get_status_all(struct sk_buff *skb, struct netlink_callback *cb) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3051 | { |
Lars Ellenberg | 71932ef | 2011-04-18 09:43:25 +0200 | [diff] [blame] | 3052 | const unsigned hdrlen = GENL_HDRLEN + GENL_MAGIC_FAMILY_HDRSZ; |
| 3053 | struct nlattr *nla; |
Andreas Gruenbacher | 7c3063c | 2011-06-09 17:52:12 +0200 | [diff] [blame] | 3054 | const char *resource_name; |
Andreas Gruenbacher | 4bc7604 | 2011-06-13 14:27:45 +0200 | [diff] [blame] | 3055 | struct drbd_resource *resource; |
Andreas Gruenbacher | 7c3063c | 2011-06-09 17:52:12 +0200 | [diff] [blame] | 3056 | int maxtype; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3057 | |
Lars Ellenberg | 71932ef | 2011-04-18 09:43:25 +0200 | [diff] [blame] | 3058 | /* Is this a followup call? */ |
| 3059 | if (cb->args[0]) { |
| 3060 | /* ... of a single resource dump, |
| 3061 | * and the resource iterator has been advanced already? */ |
| 3062 | if (cb->args[2] && cb->args[2] != cb->args[0]) |
| 3063 | return 0; /* DONE. */ |
| 3064 | goto dump; |
| 3065 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3066 | |
Lars Ellenberg | 71932ef | 2011-04-18 09:43:25 +0200 | [diff] [blame] | 3067 | /* First call (from netlink_dump_start). We need to figure out |
| 3068 | * which resource(s) the user wants us to dump. */ |
| 3069 | nla = nla_find(nlmsg_attrdata(cb->nlh, hdrlen), |
| 3070 | nlmsg_attrlen(cb->nlh, hdrlen), |
| 3071 | DRBD_NLA_CFG_CONTEXT); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3072 | |
Lars Ellenberg | 71932ef | 2011-04-18 09:43:25 +0200 | [diff] [blame] | 3073 | /* No explicit context given. Dump all. */ |
| 3074 | if (!nla) |
| 3075 | goto dump; |
Andreas Gruenbacher | 7c3063c | 2011-06-09 17:52:12 +0200 | [diff] [blame] | 3076 | maxtype = ARRAY_SIZE(drbd_cfg_context_nl_policy) - 1; |
| 3077 | nla = drbd_nla_find_nested(maxtype, nla, __nla_type(T_ctx_resource_name)); |
| 3078 | if (IS_ERR(nla)) |
| 3079 | return PTR_ERR(nla); |
Lars Ellenberg | 71932ef | 2011-04-18 09:43:25 +0200 | [diff] [blame] | 3080 | /* context given, but no name present? */ |
| 3081 | if (!nla) |
| 3082 | return -EINVAL; |
Andreas Gruenbacher | 7c3063c | 2011-06-09 17:52:12 +0200 | [diff] [blame] | 3083 | resource_name = nla_data(nla); |
Andreas Gruenbacher | 4bc7604 | 2011-06-13 14:27:45 +0200 | [diff] [blame] | 3084 | if (!*resource_name) |
| 3085 | return -ENODEV; |
| 3086 | resource = drbd_find_resource(resource_name); |
| 3087 | if (!resource) |
Lars Ellenberg | 71932ef | 2011-04-18 09:43:25 +0200 | [diff] [blame] | 3088 | return -ENODEV; |
| 3089 | |
Andreas Gruenbacher | 4bc7604 | 2011-06-13 14:27:45 +0200 | [diff] [blame] | 3090 | kref_put(&resource->kref, drbd_destroy_resource); /* get_one_status() revalidates the resource */ |
Philipp Reisner | 0ace9df | 2011-04-24 10:53:19 +0200 | [diff] [blame] | 3091 | |
Lars Ellenberg | 71932ef | 2011-04-18 09:43:25 +0200 | [diff] [blame] | 3092 | /* prime iterators, and set "filter" mode mark: |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 3093 | * only dump this connection. */ |
Andreas Gruenbacher | 4bc7604 | 2011-06-13 14:27:45 +0200 | [diff] [blame] | 3094 | cb->args[0] = (long)resource; |
Lars Ellenberg | 71932ef | 2011-04-18 09:43:25 +0200 | [diff] [blame] | 3095 | /* cb->args[1] = 0; passed in this way. */ |
Andreas Gruenbacher | 4bc7604 | 2011-06-13 14:27:45 +0200 | [diff] [blame] | 3096 | cb->args[2] = (long)resource; |
Lars Ellenberg | 71932ef | 2011-04-18 09:43:25 +0200 | [diff] [blame] | 3097 | |
| 3098 | dump: |
| 3099 | return get_one_status(skb, cb); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3100 | } |
| 3101 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3102 | int drbd_adm_get_timeout_type(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3103 | { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3104 | enum drbd_ret_code retcode; |
| 3105 | struct timeout_parms tp; |
| 3106 | int err; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3107 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3108 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR); |
| 3109 | if (!adm_ctx.reply_skb) |
| 3110 | return retcode; |
| 3111 | if (retcode != NO_ERROR) |
| 3112 | goto out; |
| 3113 | |
| 3114 | tp.timeout_type = |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3115 | adm_ctx.device->state.pdsk == D_OUTDATED ? UT_PEER_OUTDATED : |
| 3116 | test_bit(USE_DEGR_WFC_T, &adm_ctx.device->flags) ? UT_DEGRADED : |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3117 | UT_DEFAULT; |
| 3118 | |
| 3119 | err = timeout_parms_to_priv_skb(adm_ctx.reply_skb, &tp); |
| 3120 | if (err) { |
| 3121 | nlmsg_free(adm_ctx.reply_skb); |
| 3122 | return err; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3123 | } |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3124 | out: |
| 3125 | drbd_adm_finish(info, retcode); |
| 3126 | return 0; |
| 3127 | } |
Lars Ellenberg | 873b0d5 | 2011-01-21 22:53:48 +0100 | [diff] [blame] | 3128 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3129 | int drbd_adm_start_ov(struct sk_buff *skb, struct genl_info *info) |
| 3130 | { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3131 | struct drbd_device *device; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3132 | enum drbd_ret_code retcode; |
Lars Ellenberg | 58ffa58 | 2012-07-26 14:09:49 +0200 | [diff] [blame] | 3133 | struct start_ov_parms parms; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3134 | |
| 3135 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR); |
| 3136 | if (!adm_ctx.reply_skb) |
| 3137 | return retcode; |
| 3138 | if (retcode != NO_ERROR) |
| 3139 | goto out; |
| 3140 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3141 | device = adm_ctx.device; |
Lars Ellenberg | 58ffa58 | 2012-07-26 14:09:49 +0200 | [diff] [blame] | 3142 | |
| 3143 | /* resume from last known position, if possible */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3144 | parms.ov_start_sector = device->ov_start_sector; |
Lars Ellenberg | 58ffa58 | 2012-07-26 14:09:49 +0200 | [diff] [blame] | 3145 | parms.ov_stop_sector = ULLONG_MAX; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3146 | if (info->attrs[DRBD_NLA_START_OV_PARMS]) { |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 3147 | int err = start_ov_parms_from_attrs(&parms, info); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3148 | if (err) { |
| 3149 | retcode = ERR_MANDATORY_TAG; |
| 3150 | drbd_msg_put_info(from_attrs_err_to_txt(err)); |
| 3151 | goto out; |
| 3152 | } |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3153 | } |
Lars Ellenberg | 58ffa58 | 2012-07-26 14:09:49 +0200 | [diff] [blame] | 3154 | /* w_make_ov_request expects position to be aligned */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3155 | device->ov_start_sector = parms.ov_start_sector & ~(BM_SECT_PER_BIT-1); |
| 3156 | device->ov_stop_sector = parms.ov_stop_sector; |
Lars Ellenberg | 873b0d5 | 2011-01-21 22:53:48 +0100 | [diff] [blame] | 3157 | |
| 3158 | /* If there is still bitmap IO pending, e.g. previous resync or verify |
| 3159 | * just being finished, wait for it before requesting a new resync. */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3160 | drbd_suspend_io(device); |
| 3161 | wait_event(device->misc_wait, !test_bit(BITMAP_IO, &device->flags)); |
| 3162 | retcode = drbd_request_state(device, NS(conn, C_VERIFY_S)); |
| 3163 | drbd_resume_io(device); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3164 | out: |
| 3165 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3166 | return 0; |
| 3167 | } |
| 3168 | |
| 3169 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3170 | int drbd_adm_new_c_uuid(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3171 | { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3172 | struct drbd_device *device; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3173 | enum drbd_ret_code retcode; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3174 | int skip_initial_sync = 0; |
| 3175 | int err; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3176 | struct new_c_uuid_parms args; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3177 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3178 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR); |
| 3179 | if (!adm_ctx.reply_skb) |
| 3180 | return retcode; |
| 3181 | if (retcode != NO_ERROR) |
| 3182 | goto out_nolock; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3183 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3184 | device = adm_ctx.device; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3185 | memset(&args, 0, sizeof(args)); |
| 3186 | if (info->attrs[DRBD_NLA_NEW_C_UUID_PARMS]) { |
Lars Ellenberg | f399002 | 2011-03-23 14:31:09 +0100 | [diff] [blame] | 3187 | err = new_c_uuid_parms_from_attrs(&args, info); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3188 | if (err) { |
| 3189 | retcode = ERR_MANDATORY_TAG; |
| 3190 | drbd_msg_put_info(from_attrs_err_to_txt(err)); |
| 3191 | goto out_nolock; |
| 3192 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3193 | } |
| 3194 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3195 | mutex_lock(device->state_mutex); /* Protects us against serialized state changes. */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3196 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3197 | if (!get_ldev(device)) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3198 | retcode = ERR_NO_DISK; |
| 3199 | goto out; |
| 3200 | } |
| 3201 | |
| 3202 | /* this is "skip initial sync", assume to be clean */ |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 3203 | if (device->state.conn == C_CONNECTED && |
| 3204 | first_peer_device(device)->connection->agreed_pro_version >= 90 && |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3205 | device->ldev->md.uuid[UI_CURRENT] == UUID_JUST_CREATED && args.clear_bm) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3206 | dev_info(DEV, "Preparing to skip initial sync\n"); |
| 3207 | skip_initial_sync = 1; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3208 | } else if (device->state.conn != C_STANDALONE) { |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3209 | retcode = ERR_CONNECTED; |
| 3210 | goto out_dec; |
| 3211 | } |
| 3212 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3213 | drbd_uuid_set(device, UI_BITMAP, 0); /* Rotate UI_BITMAP to History 1, etc... */ |
| 3214 | drbd_uuid_new_current(device); /* New current, previous to UI_BITMAP */ |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3215 | |
| 3216 | if (args.clear_bm) { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3217 | err = drbd_bitmap_io(device, &drbd_bmio_clear_n_write, |
Lars Ellenberg | 20ceb2b | 2011-01-21 10:56:44 +0100 | [diff] [blame] | 3218 | "clear_n_write from new_c_uuid", BM_LOCKED_MASK); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3219 | if (err) { |
| 3220 | dev_err(DEV, "Writing bitmap failed with %d\n",err); |
| 3221 | retcode = ERR_IO_MD_DISK; |
| 3222 | } |
| 3223 | if (skip_initial_sync) { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3224 | drbd_send_uuids_skip_initial_sync(device); |
| 3225 | _drbd_uuid_set(device, UI_BITMAP, 0); |
| 3226 | drbd_print_uuids(device, "cleared bitmap UUID"); |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 3227 | spin_lock_irq(&first_peer_device(device)->connection->req_lock); |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3228 | _drbd_set_state(_NS2(device, disk, D_UP_TO_DATE, pdsk, D_UP_TO_DATE), |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3229 | CS_VERBOSE, NULL); |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 3230 | spin_unlock_irq(&first_peer_device(device)->connection->req_lock); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3231 | } |
| 3232 | } |
| 3233 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3234 | drbd_md_sync(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3235 | out_dec: |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3236 | put_ldev(device); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3237 | out: |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3238 | mutex_unlock(device->state_mutex); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3239 | out_nolock: |
| 3240 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3241 | return 0; |
| 3242 | } |
| 3243 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3244 | static enum drbd_ret_code |
Andreas Gruenbacher | 7c3063c | 2011-06-09 17:52:12 +0200 | [diff] [blame] | 3245 | drbd_check_resource_name(const char *name) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3246 | { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3247 | if (!name || !name[0]) { |
Andreas Gruenbacher | 7c3063c | 2011-06-09 17:52:12 +0200 | [diff] [blame] | 3248 | drbd_msg_put_info("resource name missing"); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3249 | return ERR_MANDATORY_TAG; |
| 3250 | } |
| 3251 | /* if we want to use these in sysfs/configfs/debugfs some day, |
| 3252 | * we must not allow slashes */ |
| 3253 | if (strchr(name, '/')) { |
Andreas Gruenbacher | 7c3063c | 2011-06-09 17:52:12 +0200 | [diff] [blame] | 3254 | drbd_msg_put_info("invalid resource name"); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3255 | return ERR_INVALID_REQUEST; |
| 3256 | } |
| 3257 | return NO_ERROR; |
| 3258 | } |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3259 | |
Andreas Gruenbacher | 789c1b6 | 2011-06-06 16:16:44 +0200 | [diff] [blame] | 3260 | int drbd_adm_new_resource(struct sk_buff *skb, struct genl_info *info) |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3261 | { |
| 3262 | enum drbd_ret_code retcode; |
Andreas Gruenbacher | afbbfa8 | 2011-06-16 17:58:02 +0200 | [diff] [blame] | 3263 | struct res_opts res_opts; |
| 3264 | int err; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3265 | |
| 3266 | retcode = drbd_adm_prepare(skb, info, 0); |
| 3267 | if (!adm_ctx.reply_skb) |
| 3268 | return retcode; |
| 3269 | if (retcode != NO_ERROR) |
| 3270 | goto out; |
| 3271 | |
Andreas Gruenbacher | afbbfa8 | 2011-06-16 17:58:02 +0200 | [diff] [blame] | 3272 | set_res_opts_defaults(&res_opts); |
| 3273 | err = res_opts_from_attrs(&res_opts, info); |
| 3274 | if (err && err != -ENOMSG) { |
| 3275 | retcode = ERR_MANDATORY_TAG; |
| 3276 | drbd_msg_put_info(from_attrs_err_to_txt(err)); |
| 3277 | goto out; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3278 | } |
| 3279 | |
Andreas Gruenbacher | 7c3063c | 2011-06-09 17:52:12 +0200 | [diff] [blame] | 3280 | retcode = drbd_check_resource_name(adm_ctx.resource_name); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3281 | if (retcode != NO_ERROR) |
| 3282 | goto out; |
| 3283 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 3284 | if (adm_ctx.connection) { |
Lars Ellenberg | 38f1961 | 2011-03-14 13:22:35 +0100 | [diff] [blame] | 3285 | if (info->nlhdr->nlmsg_flags & NLM_F_EXCL) { |
| 3286 | retcode = ERR_INVALID_REQUEST; |
Andreas Gruenbacher | 789c1b6 | 2011-06-06 16:16:44 +0200 | [diff] [blame] | 3287 | drbd_msg_put_info("resource exists"); |
Lars Ellenberg | 38f1961 | 2011-03-14 13:22:35 +0100 | [diff] [blame] | 3288 | } |
| 3289 | /* else: still NO_ERROR */ |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3290 | goto out; |
Philipp Reisner | 9f5180e | 2009-10-06 09:30:14 +0200 | [diff] [blame] | 3291 | } |
| 3292 | |
Andreas Gruenbacher | afbbfa8 | 2011-06-16 17:58:02 +0200 | [diff] [blame] | 3293 | if (!conn_create(adm_ctx.resource_name, &res_opts)) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3294 | retcode = ERR_NOMEM; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3295 | out: |
| 3296 | drbd_adm_finish(info, retcode); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3297 | return 0; |
| 3298 | } |
| 3299 | |
Andreas Gruenbacher | 05a10ec | 2011-06-07 22:54:17 +0200 | [diff] [blame] | 3300 | int drbd_adm_new_minor(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3301 | { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3302 | struct drbd_genlmsghdr *dh = info->userhdr; |
| 3303 | enum drbd_ret_code retcode; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3304 | |
Andreas Gruenbacher | 44e52cf | 2011-06-14 16:07:32 +0200 | [diff] [blame] | 3305 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_RESOURCE); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3306 | if (!adm_ctx.reply_skb) |
| 3307 | return retcode; |
| 3308 | if (retcode != NO_ERROR) |
| 3309 | goto out; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3310 | |
Andreas Gruenbacher | f2257a5 | 2011-07-14 16:00:40 +0200 | [diff] [blame] | 3311 | if (dh->minor > MINORMASK) { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3312 | drbd_msg_put_info("requested minor out of range"); |
| 3313 | retcode = ERR_INVALID_REQUEST; |
| 3314 | goto out; |
| 3315 | } |
Andreas Gruenbacher | 0c8e36d | 2011-03-30 16:00:17 +0200 | [diff] [blame] | 3316 | if (adm_ctx.volume > DRBD_VOLUME_MAX) { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3317 | drbd_msg_put_info("requested volume id out of range"); |
| 3318 | retcode = ERR_INVALID_REQUEST; |
| 3319 | goto out; |
Philipp Reisner | 774b305 | 2011-02-22 02:07:03 -0500 | [diff] [blame] | 3320 | } |
| 3321 | |
Lars Ellenberg | 38f1961 | 2011-03-14 13:22:35 +0100 | [diff] [blame] | 3322 | /* drbd_adm_prepare made sure already |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 3323 | * that first_peer_device(device)->connection and device->vnr match the request. */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3324 | if (adm_ctx.device) { |
Lars Ellenberg | 38f1961 | 2011-03-14 13:22:35 +0100 | [diff] [blame] | 3325 | if (info->nlhdr->nlmsg_flags & NLM_F_EXCL) |
| 3326 | retcode = ERR_MINOR_EXISTS; |
| 3327 | /* else: still NO_ERROR */ |
| 3328 | goto out; |
| 3329 | } |
| 3330 | |
Andreas Gruenbacher | a6b32bc | 2011-05-31 14:33:49 +0200 | [diff] [blame] | 3331 | retcode = drbd_create_minor(adm_ctx.connection, dh->minor, adm_ctx.volume); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3332 | out: |
| 3333 | drbd_adm_finish(info, retcode); |
Philipp Reisner | 774b305 | 2011-02-22 02:07:03 -0500 | [diff] [blame] | 3334 | return 0; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3335 | } |
| 3336 | |
Andreas Gruenbacher | 05a10ec | 2011-06-07 22:54:17 +0200 | [diff] [blame] | 3337 | static enum drbd_ret_code adm_del_minor(struct drbd_device *device) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3338 | { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3339 | if (device->state.disk == D_DISKLESS && |
| 3340 | /* no need to be device->state.conn == C_STANDALONE && |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3341 | * we may want to delete a minor from a live replication group. |
| 3342 | */ |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3343 | device->state.role == R_SECONDARY) { |
| 3344 | _drbd_request_state(device, NS(conn, C_WF_REPORT_PARAMS), |
Philipp Reisner | 369bea6 | 2011-07-06 23:04:44 +0200 | [diff] [blame] | 3345 | CS_VERBOSE + CS_WAIT_COMPLETE); |
Andreas Gruenbacher | 803ea13 | 2011-06-09 01:40:48 +0200 | [diff] [blame] | 3346 | drbd_delete_minor(device); |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3347 | return NO_ERROR; |
| 3348 | } else |
| 3349 | return ERR_MINOR_CONFIGURED; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3350 | } |
| 3351 | |
Andreas Gruenbacher | 05a10ec | 2011-06-07 22:54:17 +0200 | [diff] [blame] | 3352 | int drbd_adm_del_minor(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | 774b305 | 2011-02-22 02:07:03 -0500 | [diff] [blame] | 3353 | { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3354 | enum drbd_ret_code retcode; |
| 3355 | |
| 3356 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR); |
| 3357 | if (!adm_ctx.reply_skb) |
| 3358 | return retcode; |
| 3359 | if (retcode != NO_ERROR) |
| 3360 | goto out; |
| 3361 | |
Andreas Gruenbacher | 05a10ec | 2011-06-07 22:54:17 +0200 | [diff] [blame] | 3362 | retcode = adm_del_minor(adm_ctx.device); |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3363 | out: |
| 3364 | drbd_adm_finish(info, retcode); |
| 3365 | return 0; |
| 3366 | } |
| 3367 | |
| 3368 | int drbd_adm_down(struct sk_buff *skb, struct genl_info *info) |
| 3369 | { |
Lars Ellenberg | f3dfa40 | 2011-05-02 10:45:05 +0200 | [diff] [blame] | 3370 | int retcode; /* enum drbd_ret_code rsp. enum drbd_state_rv */ |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 3371 | struct drbd_peer_device *peer_device; |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3372 | unsigned i; |
| 3373 | |
Andreas Gruenbacher | a10f6b8 | 2011-06-09 01:26:16 +0200 | [diff] [blame] | 3374 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_RESOURCE); |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3375 | if (!adm_ctx.reply_skb) |
| 3376 | return retcode; |
| 3377 | if (retcode != NO_ERROR) |
| 3378 | goto out; |
| 3379 | |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3380 | /* demote */ |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 3381 | idr_for_each_entry(&adm_ctx.connection->peer_devices, peer_device, i) { |
| 3382 | retcode = drbd_set_role(peer_device->device, R_SECONDARY, 0); |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3383 | if (retcode < SS_SUCCESS) { |
| 3384 | drbd_msg_put_info("failed to demote"); |
Philipp Reisner | c141ebd | 2011-05-05 16:13:10 +0200 | [diff] [blame] | 3385 | goto out; |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3386 | } |
| 3387 | } |
| 3388 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 3389 | retcode = conn_try_disconnect(adm_ctx.connection, 0); |
Lars Ellenberg | f3dfa40 | 2011-05-02 10:45:05 +0200 | [diff] [blame] | 3390 | if (retcode < SS_SUCCESS) { |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3391 | drbd_msg_put_info("failed to disconnect"); |
Lars Ellenberg | f3dfa40 | 2011-05-02 10:45:05 +0200 | [diff] [blame] | 3392 | goto out; |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3393 | } |
| 3394 | |
| 3395 | /* detach */ |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 3396 | idr_for_each_entry(&adm_ctx.connection->peer_devices, peer_device, i) { |
| 3397 | retcode = adm_detach(peer_device->device, 0); |
Lars Ellenberg | 2701238 | 2012-07-24 10:13:55 +0200 | [diff] [blame] | 3398 | if (retcode < SS_SUCCESS || retcode > NO_ERROR) { |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3399 | drbd_msg_put_info("failed to detach"); |
Philipp Reisner | c141ebd | 2011-05-05 16:13:10 +0200 | [diff] [blame] | 3400 | goto out; |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3401 | } |
| 3402 | } |
| 3403 | |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 3404 | /* If we reach this, all volumes (of this connection) are Secondary, |
Lars Ellenberg | f3dfa40 | 2011-05-02 10:45:05 +0200 | [diff] [blame] | 3405 | * Disconnected, Diskless, aka Unconfigured. Make sure all threads have |
Philipp Reisner | c141ebd | 2011-05-05 16:13:10 +0200 | [diff] [blame] | 3406 | * actually stopped, state handling only does drbd_thread_stop_nowait(). */ |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 3407 | drbd_thread_stop(&adm_ctx.connection->worker); |
Lars Ellenberg | f3dfa40 | 2011-05-02 10:45:05 +0200 | [diff] [blame] | 3408 | |
| 3409 | /* Now, nothing can fail anymore */ |
| 3410 | |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3411 | /* delete volumes */ |
Andreas Gruenbacher | c06ece6 | 2011-06-21 17:23:59 +0200 | [diff] [blame^] | 3412 | idr_for_each_entry(&adm_ctx.connection->peer_devices, peer_device, i) { |
| 3413 | retcode = adm_del_minor(peer_device->device); |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3414 | if (retcode != NO_ERROR) { |
| 3415 | /* "can not happen" */ |
| 3416 | drbd_msg_put_info("failed to delete volume"); |
Philipp Reisner | ef35626 | 2011-04-13 14:21:29 -0700 | [diff] [blame] | 3417 | goto out; |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3418 | } |
| 3419 | } |
| 3420 | |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3421 | /* delete connection */ |
Andreas Gruenbacher | bde89a9 | 2011-05-30 16:32:41 +0200 | [diff] [blame] | 3422 | if (conn_lowest_minor(adm_ctx.connection) < 0) { |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 3423 | struct drbd_resource *resource = adm_ctx.connection->resource; |
| 3424 | |
| 3425 | list_del_rcu(&resource->resources); |
Philipp Reisner | ec0bddb | 2011-05-04 15:47:01 +0200 | [diff] [blame] | 3426 | synchronize_rcu(); |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 3427 | drbd_free_resource(resource); |
Philipp Reisner | 9dc9fbb | 2011-04-22 15:23:32 +0200 | [diff] [blame] | 3428 | |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3429 | retcode = NO_ERROR; |
| 3430 | } else { |
| 3431 | /* "can not happen" */ |
Andreas Gruenbacher | 789c1b6 | 2011-06-06 16:16:44 +0200 | [diff] [blame] | 3432 | retcode = ERR_RES_IN_USE; |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3433 | drbd_msg_put_info("failed to delete connection"); |
Lars Ellenberg | 85f75dd7 | 2011-03-15 16:26:37 +0100 | [diff] [blame] | 3434 | } |
Philipp Reisner | ef35626 | 2011-04-13 14:21:29 -0700 | [diff] [blame] | 3435 | goto out; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3436 | out: |
| 3437 | drbd_adm_finish(info, retcode); |
Philipp Reisner | 774b305 | 2011-02-22 02:07:03 -0500 | [diff] [blame] | 3438 | return 0; |
| 3439 | } |
| 3440 | |
Andreas Gruenbacher | 789c1b6 | 2011-06-06 16:16:44 +0200 | [diff] [blame] | 3441 | int drbd_adm_del_resource(struct sk_buff *skb, struct genl_info *info) |
Philipp Reisner | 774b305 | 2011-02-22 02:07:03 -0500 | [diff] [blame] | 3442 | { |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 3443 | struct drbd_resource *resource; |
| 3444 | struct drbd_connection *connection; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3445 | enum drbd_ret_code retcode; |
| 3446 | |
Andreas Gruenbacher | 44e52cf | 2011-06-14 16:07:32 +0200 | [diff] [blame] | 3447 | retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_RESOURCE); |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3448 | if (!adm_ctx.reply_skb) |
| 3449 | return retcode; |
| 3450 | if (retcode != NO_ERROR) |
| 3451 | goto out; |
| 3452 | |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 3453 | resource = adm_ctx.resource; |
| 3454 | for_each_connection(connection, resource) { |
| 3455 | if (connection->cstate > C_STANDALONE) { |
| 3456 | retcode = ERR_NET_CONFIGURED; |
| 3457 | goto out; |
| 3458 | } |
| 3459 | } |
| 3460 | if (!idr_is_empty(&resource->devices)) { |
Andreas Gruenbacher | 789c1b6 | 2011-06-06 16:16:44 +0200 | [diff] [blame] | 3461 | retcode = ERR_RES_IN_USE; |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 3462 | goto out; |
Philipp Reisner | 774b305 | 2011-02-22 02:07:03 -0500 | [diff] [blame] | 3463 | } |
| 3464 | |
Andreas Gruenbacher | 77c556f | 2011-06-08 22:17:38 +0200 | [diff] [blame] | 3465 | list_del_rcu(&resource->resources); |
| 3466 | for_each_connection(connection, resource) |
| 3467 | drbd_thread_stop(&connection->worker); |
| 3468 | synchronize_rcu(); |
| 3469 | drbd_free_resource(resource); |
| 3470 | retcode = NO_ERROR; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3471 | out: |
| 3472 | drbd_adm_finish(info, retcode); |
Philipp Reisner | 774b305 | 2011-02-22 02:07:03 -0500 | [diff] [blame] | 3473 | return 0; |
| 3474 | } |
| 3475 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3476 | void drbd_bcast_event(struct drbd_device *device, const struct sib_info *sib) |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3477 | { |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3478 | static atomic_t drbd_genl_seq = ATOMIC_INIT(2); /* two. */ |
| 3479 | struct sk_buff *msg; |
| 3480 | struct drbd_genlmsghdr *d_out; |
| 3481 | unsigned seq; |
| 3482 | int err = -ENOMEM; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3483 | |
Philipp Reisner | ef86b77 | 2012-12-06 10:34:34 +0100 | [diff] [blame] | 3484 | if (sib->sib_reason == SIB_SYNC_PROGRESS) { |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3485 | if (time_after(jiffies, device->rs_last_bcast + HZ)) |
| 3486 | device->rs_last_bcast = jiffies; |
Philipp Reisner | ef86b77 | 2012-12-06 10:34:34 +0100 | [diff] [blame] | 3487 | else |
| 3488 | return; |
| 3489 | } |
Philipp Reisner | 328e0f1 | 2012-10-19 14:37:47 +0200 | [diff] [blame] | 3490 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3491 | seq = atomic_inc_return(&drbd_genl_seq); |
| 3492 | msg = genlmsg_new(NLMSG_GOODSIZE, GFP_NOIO); |
| 3493 | if (!msg) |
| 3494 | goto failed; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3495 | |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3496 | err = -EMSGSIZE; |
| 3497 | d_out = genlmsg_put(msg, 0, seq, &drbd_genl_family, 0, DRBD_EVENT); |
| 3498 | if (!d_out) /* cannot happen, but anyways. */ |
| 3499 | goto nla_put_failure; |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3500 | d_out->minor = device_to_minor(device); |
Andreas Gruenbacher | 6f9b5f8 | 2011-05-06 01:03:32 +0200 | [diff] [blame] | 3501 | d_out->ret_code = NO_ERROR; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3502 | |
Andreas Gruenbacher | b30ab79 | 2011-07-03 13:26:43 +0200 | [diff] [blame] | 3503 | if (nla_put_status_info(msg, device, sib)) |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3504 | goto nla_put_failure; |
| 3505 | genlmsg_end(msg, d_out); |
| 3506 | err = drbd_genl_multicast_events(msg, 0); |
| 3507 | /* msg has been consumed or freed in netlink_broadcast() */ |
| 3508 | if (err && err != -ESRCH) |
| 3509 | goto failed; |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3510 | |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3511 | return; |
Lars Ellenberg | 3b98c0c | 2011-03-07 12:49:34 +0100 | [diff] [blame] | 3512 | |
| 3513 | nla_put_failure: |
| 3514 | nlmsg_free(msg); |
| 3515 | failed: |
| 3516 | dev_err(DEV, "Error %d while broadcasting event. " |
| 3517 | "Event seq:%u sib_reason:%u\n", |
| 3518 | err, seq, sib->sib_reason); |
Philipp Reisner | b411b36 | 2009-09-25 16:07:19 -0700 | [diff] [blame] | 3519 | } |