| /* |
| * GPL HEADER START |
| * |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 only, |
| * as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License version 2 for more details (a copy is included |
| * in the LICENSE file that accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License |
| * version 2 along with this program; If not, see |
| * http://www.gnu.org/licenses/gpl-2.0.html |
| * |
| * GPL HEADER END |
| */ |
| /* |
| * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Use is subject to license terms. |
| * |
| * Copyright (c) 2011, 2015, Intel Corporation. |
| */ |
| /* |
| * This file is part of Lustre, http://www.lustre.org/ |
| * Lustre is a trademark of Sun Microsystems, Inc. |
| * |
| * lustre/lov/lov_obd.c |
| * |
| * Author: Phil Schwan <phil@clusterfs.com> |
| * Author: Peter Braam <braam@clusterfs.com> |
| * Author: Mike Shaver <shaver@clusterfs.com> |
| * Author: Nathan Rutman <nathan@clusterfs.com> |
| */ |
| |
| #define DEBUG_SUBSYSTEM S_LOV |
| #include <linux/libcfs/libcfs.h> |
| |
| #include <uapi/linux/lustre/lustre_idl.h> |
| #include <uapi/linux/lustre/lustre_ioctl.h> |
| |
| #include <cl_object.h> |
| #include <lustre_dlm.h> |
| #include <lustre_fid.h> |
| #include <lustre_lib.h> |
| #include <lustre_mds.h> |
| #include <lustre_net.h> |
| #include <uapi/linux/lustre/lustre_param.h> |
| #include <lustre_swab.h> |
| #include <lprocfs_status.h> |
| #include <obd_class.h> |
| #include <obd_support.h> |
| |
| #include "lov_internal.h" |
| |
| /* Keep a refcount of lov->tgt usage to prevent racing with addition/deletion. |
| * Any function that expects lov_tgts to remain stationary must take a ref. |
| */ |
| static void lov_getref(struct obd_device *obd) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| |
| /* nobody gets through here until lov_putref is done */ |
| mutex_lock(&lov->lov_lock); |
| atomic_inc(&lov->lov_refcount); |
| mutex_unlock(&lov->lov_lock); |
| } |
| |
| static void __lov_del_obd(struct obd_device *obd, struct lov_tgt_desc *tgt); |
| |
| static void lov_putref(struct obd_device *obd) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| |
| mutex_lock(&lov->lov_lock); |
| /* ok to dec to 0 more than once -- ltd_exp's will be null */ |
| if (atomic_dec_and_test(&lov->lov_refcount) && lov->lov_death_row) { |
| LIST_HEAD(kill); |
| int i; |
| struct lov_tgt_desc *tgt, *n; |
| |
| CDEBUG(D_CONFIG, "destroying %d lov targets\n", |
| lov->lov_death_row); |
| for (i = 0; i < lov->desc.ld_tgt_count; i++) { |
| tgt = lov->lov_tgts[i]; |
| |
| if (!tgt || !tgt->ltd_reap) |
| continue; |
| list_add(&tgt->ltd_kill, &kill); |
| /* XXX - right now there is a dependency on ld_tgt_count |
| * being the maximum tgt index for computing the |
| * mds_max_easize. So we can't shrink it. |
| */ |
| lov_ost_pool_remove(&lov->lov_packed, i); |
| lov->lov_tgts[i] = NULL; |
| lov->lov_death_row--; |
| } |
| mutex_unlock(&lov->lov_lock); |
| |
| list_for_each_entry_safe(tgt, n, &kill, ltd_kill) { |
| list_del(&tgt->ltd_kill); |
| /* Disconnect */ |
| __lov_del_obd(obd, tgt); |
| } |
| |
| if (lov->lov_tgts_kobj) |
| kobject_put(lov->lov_tgts_kobj); |
| |
| } else { |
| mutex_unlock(&lov->lov_lock); |
| } |
| } |
| |
| static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid, |
| enum obd_notify_event ev); |
| static int lov_notify(struct obd_device *obd, struct obd_device *watched, |
| enum obd_notify_event ev, void *data); |
| |
| int lov_connect_obd(struct obd_device *obd, __u32 index, int activate, |
| struct obd_connect_data *data) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| struct obd_uuid *tgt_uuid; |
| struct obd_device *tgt_obd; |
| static struct obd_uuid lov_osc_uuid = { "LOV_OSC_UUID" }; |
| struct obd_import *imp; |
| int rc; |
| |
| if (!lov->lov_tgts[index]) |
| return -EINVAL; |
| |
| tgt_uuid = &lov->lov_tgts[index]->ltd_uuid; |
| tgt_obd = lov->lov_tgts[index]->ltd_obd; |
| |
| if (!tgt_obd->obd_set_up) { |
| CERROR("Target %s not set up\n", obd_uuid2str(tgt_uuid)); |
| return -EINVAL; |
| } |
| |
| /* override the sp_me from lov */ |
| tgt_obd->u.cli.cl_sp_me = lov->lov_sp_me; |
| |
| if (data && (data->ocd_connect_flags & OBD_CONNECT_INDEX)) |
| data->ocd_index = index; |
| |
| /* |
| * Divine LOV knows that OBDs under it are OSCs. |
| */ |
| imp = tgt_obd->u.cli.cl_import; |
| |
| if (activate) { |
| tgt_obd->obd_no_recov = 0; |
| /* FIXME this is probably supposed to be |
| * ptlrpc_set_import_active. Horrible naming. |
| */ |
| ptlrpc_activate_import(imp); |
| } |
| |
| rc = obd_register_observer(tgt_obd, obd); |
| if (rc) { |
| CERROR("Target %s register_observer error %d\n", |
| obd_uuid2str(tgt_uuid), rc); |
| return rc; |
| } |
| |
| if (imp->imp_invalid) { |
| CDEBUG(D_CONFIG, "not connecting OSC %s; administratively disabled\n", |
| obd_uuid2str(tgt_uuid)); |
| return 0; |
| } |
| |
| rc = obd_connect(NULL, &lov->lov_tgts[index]->ltd_exp, tgt_obd, |
| &lov_osc_uuid, data, NULL); |
| if (rc || !lov->lov_tgts[index]->ltd_exp) { |
| CERROR("Target %s connect error %d\n", |
| obd_uuid2str(tgt_uuid), rc); |
| return -ENODEV; |
| } |
| |
| lov->lov_tgts[index]->ltd_reap = 0; |
| |
| CDEBUG(D_CONFIG, "Connected tgt idx %d %s (%s) %sactive\n", index, |
| obd_uuid2str(tgt_uuid), tgt_obd->obd_name, activate ? "":"in"); |
| |
| if (lov->lov_tgts_kobj) |
| /* Even if we failed, that's ok */ |
| rc = sysfs_create_link(lov->lov_tgts_kobj, &tgt_obd->obd_kobj, |
| tgt_obd->obd_name); |
| |
| return 0; |
| } |
| |
| static int lov_connect(const struct lu_env *env, |
| struct obd_export **exp, struct obd_device *obd, |
| struct obd_uuid *cluuid, struct obd_connect_data *data, |
| void *localdata) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| struct lov_tgt_desc *tgt; |
| struct lustre_handle conn; |
| int i, rc; |
| |
| CDEBUG(D_CONFIG, "connect #%d\n", lov->lov_connects); |
| |
| rc = class_connect(&conn, obd, cluuid); |
| if (rc) |
| return rc; |
| |
| *exp = class_conn2export(&conn); |
| |
| /* Why should there ever be more than 1 connect? */ |
| lov->lov_connects++; |
| LASSERT(lov->lov_connects == 1); |
| |
| memset(&lov->lov_ocd, 0, sizeof(lov->lov_ocd)); |
| if (data) |
| lov->lov_ocd = *data; |
| |
| obd_getref(obd); |
| |
| lov->lov_tgts_kobj = kobject_create_and_add("target_obds", |
| &obd->obd_kobj); |
| |
| for (i = 0; i < lov->desc.ld_tgt_count; i++) { |
| tgt = lov->lov_tgts[i]; |
| if (!tgt || obd_uuid_empty(&tgt->ltd_uuid)) |
| continue; |
| /* Flags will be lowest common denominator */ |
| rc = lov_connect_obd(obd, i, tgt->ltd_activate, &lov->lov_ocd); |
| if (rc) { |
| CERROR("%s: lov connect tgt %d failed: %d\n", |
| obd->obd_name, i, rc); |
| continue; |
| } |
| /* connect to administrative disabled ost */ |
| if (!lov->lov_tgts[i]->ltd_exp) |
| continue; |
| |
| rc = lov_notify(obd, lov->lov_tgts[i]->ltd_exp->exp_obd, |
| OBD_NOTIFY_CONNECT, (void *)&i); |
| if (rc) { |
| CERROR("%s error sending notify %d\n", |
| obd->obd_name, rc); |
| } |
| } |
| obd_putref(obd); |
| |
| return 0; |
| } |
| |
| static int lov_disconnect_obd(struct obd_device *obd, struct lov_tgt_desc *tgt) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| struct obd_device *osc_obd; |
| int rc; |
| |
| osc_obd = class_exp2obd(tgt->ltd_exp); |
| CDEBUG(D_CONFIG, "%s: disconnecting target %s\n", |
| obd->obd_name, osc_obd ? osc_obd->obd_name : "NULL"); |
| |
| if (tgt->ltd_active) { |
| tgt->ltd_active = 0; |
| lov->desc.ld_active_tgt_count--; |
| tgt->ltd_exp->exp_obd->obd_inactive = 1; |
| } |
| |
| if (osc_obd) { |
| if (lov->lov_tgts_kobj) |
| sysfs_remove_link(lov->lov_tgts_kobj, |
| osc_obd->obd_name); |
| |
| /* Pass it on to our clients. |
| * XXX This should be an argument to disconnect, |
| * XXX not a back-door flag on the OBD. Ah well. |
| */ |
| osc_obd->obd_force = obd->obd_force; |
| osc_obd->obd_fail = obd->obd_fail; |
| osc_obd->obd_no_recov = obd->obd_no_recov; |
| } |
| |
| obd_register_observer(osc_obd, NULL); |
| |
| rc = obd_disconnect(tgt->ltd_exp); |
| if (rc) { |
| CERROR("Target %s disconnect error %d\n", |
| tgt->ltd_uuid.uuid, rc); |
| rc = 0; |
| } |
| |
| tgt->ltd_exp = NULL; |
| return 0; |
| } |
| |
| static int lov_disconnect(struct obd_export *exp) |
| { |
| struct obd_device *obd = class_exp2obd(exp); |
| struct lov_obd *lov = &obd->u.lov; |
| int i, rc; |
| |
| if (!lov->lov_tgts) |
| goto out; |
| |
| /* Only disconnect the underlying layers on the final disconnect. */ |
| lov->lov_connects--; |
| if (lov->lov_connects != 0) { |
| /* why should there be more than 1 connect? */ |
| CERROR("disconnect #%d\n", lov->lov_connects); |
| goto out; |
| } |
| |
| /* Let's hold another reference so lov_del_obd doesn't spin through |
| * putref every time |
| */ |
| obd_getref(obd); |
| |
| for (i = 0; i < lov->desc.ld_tgt_count; i++) { |
| if (lov->lov_tgts[i] && lov->lov_tgts[i]->ltd_exp) { |
| /* Disconnection is the last we know about an obd */ |
| lov_del_target(obd, i, NULL, lov->lov_tgts[i]->ltd_gen); |
| } |
| } |
| |
| obd_putref(obd); |
| |
| out: |
| rc = class_disconnect(exp); /* bz 9811 */ |
| return rc; |
| } |
| |
| /* Error codes: |
| * |
| * -EINVAL : UUID can't be found in the LOV's target list |
| * -ENOTCONN: The UUID is found, but the target connection is bad (!) |
| * -EBADF : The UUID is found, but the OBD is the wrong type (!) |
| * any >= 0 : is log target index |
| */ |
| static int lov_set_osc_active(struct obd_device *obd, struct obd_uuid *uuid, |
| enum obd_notify_event ev) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| struct lov_tgt_desc *tgt; |
| int index, activate, active; |
| |
| CDEBUG(D_INFO, "Searching in lov %p for uuid %s event(%d)\n", |
| lov, uuid->uuid, ev); |
| |
| obd_getref(obd); |
| for (index = 0; index < lov->desc.ld_tgt_count; index++) { |
| tgt = lov->lov_tgts[index]; |
| if (!tgt) |
| continue; |
| /* |
| * LU-642, initially inactive OSC could miss the obd_connect, |
| * we make up for it here. |
| */ |
| if (ev == OBD_NOTIFY_ACTIVATE && !tgt->ltd_exp && |
| obd_uuid_equals(uuid, &tgt->ltd_uuid)) { |
| struct obd_uuid lov_osc_uuid = {"LOV_OSC_UUID"}; |
| |
| obd_connect(NULL, &tgt->ltd_exp, tgt->ltd_obd, |
| &lov_osc_uuid, &lov->lov_ocd, NULL); |
| } |
| if (!tgt->ltd_exp) |
| continue; |
| |
| CDEBUG(D_INFO, "lov idx %d is %s conn %#llx\n", |
| index, obd_uuid2str(&tgt->ltd_uuid), |
| tgt->ltd_exp->exp_handle.h_cookie); |
| if (obd_uuid_equals(uuid, &tgt->ltd_uuid)) |
| break; |
| } |
| |
| if (index == lov->desc.ld_tgt_count) { |
| index = -EINVAL; |
| goto out; |
| } |
| |
| if (ev == OBD_NOTIFY_DEACTIVATE || ev == OBD_NOTIFY_ACTIVATE) { |
| activate = (ev == OBD_NOTIFY_ACTIVATE) ? 1 : 0; |
| |
| if (lov->lov_tgts[index]->ltd_activate == activate) { |
| CDEBUG(D_INFO, "OSC %s already %sactivate!\n", |
| uuid->uuid, activate ? "" : "de"); |
| } else { |
| lov->lov_tgts[index]->ltd_activate = activate; |
| CDEBUG(D_CONFIG, "%sactivate OSC %s\n", |
| activate ? "" : "de", obd_uuid2str(uuid)); |
| } |
| |
| } else if (ev == OBD_NOTIFY_INACTIVE || ev == OBD_NOTIFY_ACTIVE) { |
| active = (ev == OBD_NOTIFY_ACTIVE) ? 1 : 0; |
| |
| if (lov->lov_tgts[index]->ltd_active == active) { |
| CDEBUG(D_INFO, "OSC %s already %sactive!\n", |
| uuid->uuid, active ? "" : "in"); |
| goto out; |
| } |
| CDEBUG(D_CONFIG, "Marking OSC %s %sactive\n", |
| obd_uuid2str(uuid), active ? "" : "in"); |
| |
| lov->lov_tgts[index]->ltd_active = active; |
| if (active) { |
| lov->desc.ld_active_tgt_count++; |
| lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 0; |
| } else { |
| lov->desc.ld_active_tgt_count--; |
| lov->lov_tgts[index]->ltd_exp->exp_obd->obd_inactive = 1; |
| } |
| } else { |
| CERROR("Unknown event(%d) for uuid %s", ev, uuid->uuid); |
| } |
| |
| out: |
| obd_putref(obd); |
| return index; |
| } |
| |
| static int lov_notify(struct obd_device *obd, struct obd_device *watched, |
| enum obd_notify_event ev, void *data) |
| { |
| int rc = 0; |
| struct lov_obd *lov = &obd->u.lov; |
| |
| down_read(&lov->lov_notify_lock); |
| if (!lov->lov_connects) { |
| up_read(&lov->lov_notify_lock); |
| return rc; |
| } |
| |
| if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE || |
| ev == OBD_NOTIFY_ACTIVATE || ev == OBD_NOTIFY_DEACTIVATE) { |
| struct obd_uuid *uuid; |
| |
| LASSERT(watched); |
| |
| if (strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME)) { |
| up_read(&lov->lov_notify_lock); |
| CERROR("unexpected notification of %s %s!\n", |
| watched->obd_type->typ_name, |
| watched->obd_name); |
| return -EINVAL; |
| } |
| uuid = &watched->u.cli.cl_target_uuid; |
| |
| /* Set OSC as active before notifying the observer, so the |
| * observer can use the OSC normally. |
| */ |
| rc = lov_set_osc_active(obd, uuid, ev); |
| if (rc < 0) { |
| up_read(&lov->lov_notify_lock); |
| CERROR("event(%d) of %s failed: %d\n", ev, |
| obd_uuid2str(uuid), rc); |
| return rc; |
| } |
| /* active event should be pass lov target index as data */ |
| data = &rc; |
| } |
| |
| /* Pass the notification up the chain. */ |
| if (watched) { |
| rc = obd_notify_observer(obd, watched, ev, data); |
| } else { |
| /* NULL watched means all osc's in the lov (only for syncs) */ |
| /* sync event should be send lov idx as data */ |
| struct lov_obd *lov = &obd->u.lov; |
| int i, is_sync; |
| |
| data = &i; |
| is_sync = (ev == OBD_NOTIFY_SYNC) || |
| (ev == OBD_NOTIFY_SYNC_NONBLOCK); |
| |
| obd_getref(obd); |
| for (i = 0; i < lov->desc.ld_tgt_count; i++) { |
| if (!lov->lov_tgts[i]) |
| continue; |
| |
| /* don't send sync event if target not |
| * connected/activated |
| */ |
| if (is_sync && !lov->lov_tgts[i]->ltd_active) |
| continue; |
| |
| rc = obd_notify_observer(obd, lov->lov_tgts[i]->ltd_obd, |
| ev, data); |
| if (rc) { |
| CERROR("%s: notify %s of %s failed %d\n", |
| obd->obd_name, |
| obd->obd_observer->obd_name, |
| lov->lov_tgts[i]->ltd_obd->obd_name, |
| rc); |
| } |
| } |
| obd_putref(obd); |
| } |
| |
| up_read(&lov->lov_notify_lock); |
| return rc; |
| } |
| |
| static int lov_add_target(struct obd_device *obd, struct obd_uuid *uuidp, |
| __u32 index, int gen, int active) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| struct lov_tgt_desc *tgt; |
| struct obd_device *tgt_obd; |
| int rc; |
| |
| CDEBUG(D_CONFIG, "uuid:%s idx:%d gen:%d active:%d\n", |
| uuidp->uuid, index, gen, active); |
| |
| if (gen <= 0) { |
| CERROR("request to add OBD %s with invalid generation: %d\n", |
| uuidp->uuid, gen); |
| return -EINVAL; |
| } |
| |
| tgt_obd = class_find_client_obd(uuidp, LUSTRE_OSC_NAME, |
| &obd->obd_uuid); |
| if (!tgt_obd) |
| return -EINVAL; |
| |
| mutex_lock(&lov->lov_lock); |
| |
| if ((index < lov->lov_tgt_size) && lov->lov_tgts[index]) { |
| tgt = lov->lov_tgts[index]; |
| CERROR("UUID %s already assigned at LOV target index %d\n", |
| obd_uuid2str(&tgt->ltd_uuid), index); |
| mutex_unlock(&lov->lov_lock); |
| return -EEXIST; |
| } |
| |
| if (index >= lov->lov_tgt_size) { |
| /* We need to reallocate the lov target array. */ |
| struct lov_tgt_desc **newtgts, **old = NULL; |
| __u32 newsize, oldsize = 0; |
| |
| newsize = max_t(__u32, lov->lov_tgt_size, 2); |
| while (newsize < index + 1) |
| newsize <<= 1; |
| newtgts = kcalloc(newsize, sizeof(*newtgts), GFP_NOFS); |
| if (!newtgts) { |
| mutex_unlock(&lov->lov_lock); |
| return -ENOMEM; |
| } |
| |
| if (lov->lov_tgt_size) { |
| memcpy(newtgts, lov->lov_tgts, sizeof(*newtgts) * |
| lov->lov_tgt_size); |
| old = lov->lov_tgts; |
| oldsize = lov->lov_tgt_size; |
| } |
| |
| lov->lov_tgts = newtgts; |
| lov->lov_tgt_size = newsize; |
| smp_rmb(); |
| kfree(old); |
| |
| CDEBUG(D_CONFIG, "tgts: %p size: %d\n", |
| lov->lov_tgts, lov->lov_tgt_size); |
| } |
| |
| tgt = kzalloc(sizeof(*tgt), GFP_NOFS); |
| if (!tgt) { |
| mutex_unlock(&lov->lov_lock); |
| return -ENOMEM; |
| } |
| |
| rc = lov_ost_pool_add(&lov->lov_packed, index, lov->lov_tgt_size); |
| if (rc) { |
| mutex_unlock(&lov->lov_lock); |
| kfree(tgt); |
| return rc; |
| } |
| |
| tgt->ltd_uuid = *uuidp; |
| tgt->ltd_obd = tgt_obd; |
| /* XXX - add a sanity check on the generation number. */ |
| tgt->ltd_gen = gen; |
| tgt->ltd_index = index; |
| tgt->ltd_activate = active; |
| lov->lov_tgts[index] = tgt; |
| if (index >= lov->desc.ld_tgt_count) |
| lov->desc.ld_tgt_count = index + 1; |
| |
| mutex_unlock(&lov->lov_lock); |
| |
| CDEBUG(D_CONFIG, "idx=%d ltd_gen=%d ld_tgt_count=%d\n", |
| index, tgt->ltd_gen, lov->desc.ld_tgt_count); |
| |
| if (lov->lov_connects == 0) { |
| /* lov_connect hasn't been called yet. We'll do the |
| * lov_connect_obd on this target when that fn first runs, |
| * because we don't know the connect flags yet. |
| */ |
| return 0; |
| } |
| |
| obd_getref(obd); |
| |
| rc = lov_connect_obd(obd, index, active, &lov->lov_ocd); |
| if (rc) |
| goto out; |
| |
| /* connect to administrative disabled ost */ |
| if (!tgt->ltd_exp) { |
| rc = 0; |
| goto out; |
| } |
| |
| if (lov->lov_cache) { |
| rc = obd_set_info_async(NULL, tgt->ltd_exp, |
| sizeof(KEY_CACHE_SET), KEY_CACHE_SET, |
| sizeof(struct cl_client_cache), |
| lov->lov_cache, NULL); |
| if (rc < 0) |
| goto out; |
| } |
| |
| rc = lov_notify(obd, tgt->ltd_exp->exp_obd, |
| active ? OBD_NOTIFY_CONNECT : OBD_NOTIFY_INACTIVE, |
| (void *)&index); |
| |
| out: |
| if (rc) { |
| CERROR("add failed (%d), deleting %s\n", rc, |
| obd_uuid2str(&tgt->ltd_uuid)); |
| lov_del_target(obd, index, NULL, 0); |
| } |
| obd_putref(obd); |
| return rc; |
| } |
| |
| /* Schedule a target for deletion */ |
| int lov_del_target(struct obd_device *obd, __u32 index, |
| struct obd_uuid *uuidp, int gen) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| int count = lov->desc.ld_tgt_count; |
| int rc = 0; |
| |
| if (index >= count) { |
| CERROR("LOV target index %d >= number of LOV OBDs %d.\n", |
| index, count); |
| return -EINVAL; |
| } |
| |
| /* to make sure there's no ongoing lov_notify() now */ |
| down_write(&lov->lov_notify_lock); |
| obd_getref(obd); |
| |
| if (!lov->lov_tgts[index]) { |
| CERROR("LOV target at index %d is not setup.\n", index); |
| rc = -EINVAL; |
| goto out; |
| } |
| |
| if (uuidp && !obd_uuid_equals(uuidp, &lov->lov_tgts[index]->ltd_uuid)) { |
| CERROR("LOV target UUID %s at index %d doesn't match %s.\n", |
| lov_uuid2str(lov, index), index, |
| obd_uuid2str(uuidp)); |
| rc = -EINVAL; |
| goto out; |
| } |
| |
| CDEBUG(D_CONFIG, "uuid: %s idx: %d gen: %d exp: %p active: %d\n", |
| lov_uuid2str(lov, index), index, |
| lov->lov_tgts[index]->ltd_gen, lov->lov_tgts[index]->ltd_exp, |
| lov->lov_tgts[index]->ltd_active); |
| |
| lov->lov_tgts[index]->ltd_reap = 1; |
| lov->lov_death_row++; |
| /* we really delete it from obd_putref */ |
| out: |
| obd_putref(obd); |
| up_write(&lov->lov_notify_lock); |
| |
| return rc; |
| } |
| |
| static void __lov_del_obd(struct obd_device *obd, struct lov_tgt_desc *tgt) |
| { |
| struct obd_device *osc_obd; |
| |
| LASSERT(tgt); |
| LASSERT(tgt->ltd_reap); |
| |
| osc_obd = class_exp2obd(tgt->ltd_exp); |
| |
| CDEBUG(D_CONFIG, "Removing tgt %s : %s\n", |
| tgt->ltd_uuid.uuid, |
| osc_obd ? osc_obd->obd_name : "<no obd>"); |
| |
| if (tgt->ltd_exp) |
| lov_disconnect_obd(obd, tgt); |
| |
| kfree(tgt); |
| |
| /* Manual cleanup - no cleanup logs to clean up the osc's. We must |
| * do it ourselves. And we can't do it from lov_cleanup, |
| * because we just lost our only reference to it. |
| */ |
| if (osc_obd) |
| class_manual_cleanup(osc_obd); |
| } |
| |
| void lov_fix_desc_stripe_size(__u64 *val) |
| { |
| if (*val < LOV_MIN_STRIPE_SIZE) { |
| if (*val != 0) |
| LCONSOLE_INFO("Increasing default stripe size to minimum %u\n", |
| LOV_DESC_STRIPE_SIZE_DEFAULT); |
| *val = LOV_DESC_STRIPE_SIZE_DEFAULT; |
| } else if (*val & (LOV_MIN_STRIPE_SIZE - 1)) { |
| *val &= ~(LOV_MIN_STRIPE_SIZE - 1); |
| LCONSOLE_WARN("Changing default stripe size to %llu (a multiple of %u)\n", |
| *val, LOV_MIN_STRIPE_SIZE); |
| } |
| } |
| |
| void lov_fix_desc_stripe_count(__u32 *val) |
| { |
| if (*val == 0) |
| *val = 1; |
| } |
| |
| void lov_fix_desc_pattern(__u32 *val) |
| { |
| /* from lov_setstripe */ |
| if ((*val != 0) && (*val != LOV_PATTERN_RAID0)) { |
| LCONSOLE_WARN("Unknown stripe pattern: %#x\n", *val); |
| *val = 0; |
| } |
| } |
| |
| void lov_fix_desc_qos_maxage(__u32 *val) |
| { |
| if (*val == 0) |
| *val = LOV_DESC_QOS_MAXAGE_DEFAULT; |
| } |
| |
| void lov_fix_desc(struct lov_desc *desc) |
| { |
| lov_fix_desc_stripe_size(&desc->ld_default_stripe_size); |
| lov_fix_desc_stripe_count(&desc->ld_default_stripe_count); |
| lov_fix_desc_pattern(&desc->ld_pattern); |
| lov_fix_desc_qos_maxage(&desc->ld_qos_maxage); |
| } |
| |
| int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg) |
| { |
| struct lprocfs_static_vars lvars = { NULL }; |
| struct lov_desc *desc; |
| struct lov_obd *lov = &obd->u.lov; |
| int rc; |
| |
| if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) { |
| CERROR("LOV setup requires a descriptor\n"); |
| return -EINVAL; |
| } |
| |
| desc = (struct lov_desc *)lustre_cfg_buf(lcfg, 1); |
| |
| if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) { |
| CERROR("descriptor size wrong: %d > %d\n", |
| (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1)); |
| return -EINVAL; |
| } |
| |
| if (desc->ld_magic != LOV_DESC_MAGIC) { |
| if (desc->ld_magic == __swab32(LOV_DESC_MAGIC)) { |
| CDEBUG(D_OTHER, "%s: Swabbing lov desc %p\n", |
| obd->obd_name, desc); |
| lustre_swab_lov_desc(desc); |
| } else { |
| CERROR("%s: Bad lov desc magic: %#x\n", |
| obd->obd_name, desc->ld_magic); |
| return -EINVAL; |
| } |
| } |
| |
| lov_fix_desc(desc); |
| |
| desc->ld_active_tgt_count = 0; |
| lov->desc = *desc; |
| lov->lov_tgt_size = 0; |
| |
| mutex_init(&lov->lov_lock); |
| atomic_set(&lov->lov_refcount, 0); |
| lov->lov_sp_me = LUSTRE_SP_CLI; |
| |
| init_rwsem(&lov->lov_notify_lock); |
| |
| lov->lov_pools_hash_body = cfs_hash_create("POOLS", HASH_POOLS_CUR_BITS, |
| HASH_POOLS_MAX_BITS, |
| HASH_POOLS_BKT_BITS, 0, |
| CFS_HASH_MIN_THETA, |
| CFS_HASH_MAX_THETA, |
| &pool_hash_operations, |
| CFS_HASH_DEFAULT); |
| INIT_LIST_HEAD(&lov->lov_pool_list); |
| lov->lov_pool_count = 0; |
| rc = lov_ost_pool_init(&lov->lov_packed, 0); |
| if (rc) |
| goto out; |
| |
| lprocfs_lov_init_vars(&lvars); |
| lprocfs_obd_setup(obd, lvars.obd_vars, lvars.sysfs_vars); |
| |
| rc = ldebugfs_seq_create(obd->obd_debugfs_entry, "target_obd", |
| 0444, &lov_proc_target_fops, obd); |
| if (rc) |
| CWARN("Error adding the target_obd file\n"); |
| |
| lov->lov_pool_debugfs_entry = ldebugfs_register("pools", |
| obd->obd_debugfs_entry, |
| NULL, NULL); |
| return 0; |
| |
| out: |
| return rc; |
| } |
| |
| static int lov_cleanup(struct obd_device *obd) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| struct list_head *pos, *tmp; |
| struct pool_desc *pool; |
| |
| list_for_each_safe(pos, tmp, &lov->lov_pool_list) { |
| pool = list_entry(pos, struct pool_desc, pool_list); |
| /* free pool structs */ |
| CDEBUG(D_INFO, "delete pool %p\n", pool); |
| /* In the function below, .hs_keycmp resolves to |
| * pool_hashkey_keycmp() |
| */ |
| /* coverity[overrun-buffer-val] */ |
| lov_pool_del(obd, pool->pool_name); |
| } |
| cfs_hash_putref(lov->lov_pools_hash_body); |
| lov_ost_pool_free(&lov->lov_packed); |
| |
| lprocfs_obd_cleanup(obd); |
| if (lov->lov_tgts) { |
| int i; |
| |
| obd_getref(obd); |
| for (i = 0; i < lov->desc.ld_tgt_count; i++) { |
| if (!lov->lov_tgts[i]) |
| continue; |
| |
| /* Inactive targets may never have connected */ |
| if (lov->lov_tgts[i]->ltd_active || |
| atomic_read(&lov->lov_refcount)) |
| /* We should never get here - these |
| * should have been removed in the |
| * disconnect. |
| */ |
| CERROR("lov tgt %d not cleaned! deathrow=%d, lovrc=%d\n", |
| i, lov->lov_death_row, |
| atomic_read(&lov->lov_refcount)); |
| lov_del_target(obd, i, NULL, 0); |
| } |
| obd_putref(obd); |
| kfree(lov->lov_tgts); |
| lov->lov_tgt_size = 0; |
| } |
| |
| if (lov->lov_cache) { |
| cl_cache_decref(lov->lov_cache); |
| lov->lov_cache = NULL; |
| } |
| |
| return 0; |
| } |
| |
| int lov_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg, |
| __u32 *indexp, int *genp) |
| { |
| struct obd_uuid obd_uuid; |
| int cmd; |
| int rc = 0; |
| |
| switch (cmd = lcfg->lcfg_command) { |
| case LCFG_LOV_ADD_OBD: |
| case LCFG_LOV_ADD_INA: |
| case LCFG_LOV_DEL_OBD: { |
| __u32 index; |
| int gen; |
| /* lov_modify_tgts add 0:lov_mdsA 1:ost1_UUID 2:0 3:1 */ |
| if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid)) { |
| rc = -EINVAL; |
| goto out; |
| } |
| |
| obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1)); |
| |
| rc = kstrtoint(lustre_cfg_buf(lcfg, 2), 10, indexp); |
| if (rc < 0) |
| goto out; |
| rc = kstrtoint(lustre_cfg_buf(lcfg, 3), 10, genp); |
| if (rc < 0) |
| goto out; |
| index = *indexp; |
| gen = *genp; |
| if (cmd == LCFG_LOV_ADD_OBD) |
| rc = lov_add_target(obd, &obd_uuid, index, gen, 1); |
| else if (cmd == LCFG_LOV_ADD_INA) |
| rc = lov_add_target(obd, &obd_uuid, index, gen, 0); |
| else |
| rc = lov_del_target(obd, index, &obd_uuid, gen); |
| goto out; |
| } |
| case LCFG_PARAM: { |
| struct lprocfs_static_vars lvars = { NULL }; |
| struct lov_desc *desc = &obd->u.lov.desc; |
| |
| if (!desc) { |
| rc = -EINVAL; |
| goto out; |
| } |
| |
| lprocfs_lov_init_vars(&lvars); |
| |
| rc = class_process_proc_param(PARAM_LOV, lvars.obd_vars, |
| lcfg, obd); |
| if (rc > 0) |
| rc = 0; |
| goto out; |
| } |
| case LCFG_POOL_NEW: |
| case LCFG_POOL_ADD: |
| case LCFG_POOL_DEL: |
| case LCFG_POOL_REM: |
| goto out; |
| |
| default: { |
| CERROR("Unknown command: %d\n", lcfg->lcfg_command); |
| rc = -EINVAL; |
| goto out; |
| } |
| } |
| out: |
| return rc; |
| } |
| |
| static int |
| lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc) |
| { |
| struct lov_request_set *lovset = (struct lov_request_set *)data; |
| int err; |
| |
| if (rc) |
| atomic_set(&lovset->set_completes, 0); |
| |
| err = lov_fini_statfs_set(lovset); |
| return rc ? rc : err; |
| } |
| |
| static int lov_statfs_async(struct obd_export *exp, struct obd_info *oinfo, |
| __u64 max_age, struct ptlrpc_request_set *rqset) |
| { |
| struct obd_device *obd = class_exp2obd(exp); |
| struct lov_request_set *set; |
| struct lov_request *req; |
| struct lov_obd *lov; |
| int rc = 0; |
| |
| LASSERT(oinfo->oi_osfs); |
| |
| lov = &obd->u.lov; |
| rc = lov_prep_statfs_set(obd, oinfo, &set); |
| if (rc) |
| return rc; |
| |
| list_for_each_entry(req, &set->set_list, rq_link) { |
| rc = obd_statfs_async(lov->lov_tgts[req->rq_idx]->ltd_exp, |
| &req->rq_oi, max_age, rqset); |
| if (rc) |
| break; |
| } |
| |
| if (rc || list_empty(&rqset->set_requests)) { |
| int err; |
| |
| if (rc) |
| atomic_set(&set->set_completes, 0); |
| err = lov_fini_statfs_set(set); |
| return rc ? rc : err; |
| } |
| |
| LASSERT(!rqset->set_interpret); |
| rqset->set_interpret = lov_statfs_interpret; |
| rqset->set_arg = (void *)set; |
| return 0; |
| } |
| |
| static int lov_statfs(const struct lu_env *env, struct obd_export *exp, |
| struct obd_statfs *osfs, __u64 max_age, __u32 flags) |
| { |
| struct ptlrpc_request_set *set = NULL; |
| struct obd_info oinfo = { |
| .oi_osfs = osfs, |
| .oi_flags = flags, |
| }; |
| int rc = 0; |
| |
| /* for obdclass we forbid using obd_statfs_rqset, but prefer using async |
| * statfs requests |
| */ |
| set = ptlrpc_prep_set(); |
| if (!set) |
| return -ENOMEM; |
| |
| rc = lov_statfs_async(exp, &oinfo, max_age, set); |
| if (rc == 0) |
| rc = ptlrpc_set_wait(set); |
| ptlrpc_set_destroy(set); |
| |
| return rc; |
| } |
| |
| static int lov_iocontrol(unsigned int cmd, struct obd_export *exp, int len, |
| void *karg, void __user *uarg) |
| { |
| struct obd_device *obddev = class_exp2obd(exp); |
| struct lov_obd *lov = &obddev->u.lov; |
| int i = 0, rc = 0, count = lov->desc.ld_tgt_count; |
| struct obd_uuid *uuidp; |
| |
| switch (cmd) { |
| case IOC_OBD_STATFS: { |
| struct obd_ioctl_data *data = karg; |
| struct obd_device *osc_obd; |
| struct obd_statfs stat_buf = {0}; |
| __u32 index; |
| __u32 flags; |
| |
| memcpy(&index, data->ioc_inlbuf2, sizeof(__u32)); |
| if (index >= count) |
| return -ENODEV; |
| |
| if (!lov->lov_tgts[index]) |
| /* Try again with the next index */ |
| return -EAGAIN; |
| if (!lov->lov_tgts[index]->ltd_active) |
| return -ENODATA; |
| |
| osc_obd = class_exp2obd(lov->lov_tgts[index]->ltd_exp); |
| if (!osc_obd) |
| return -EINVAL; |
| |
| /* copy UUID */ |
| if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(osc_obd), |
| min_t(unsigned long, data->ioc_plen2, |
| sizeof(struct obd_uuid)))) |
| return -EFAULT; |
| |
| memcpy(&flags, data->ioc_inlbuf1, sizeof(__u32)); |
| flags = flags & LL_STATFS_NODELAY ? OBD_STATFS_NODELAY : 0; |
| |
| /* got statfs data */ |
| rc = obd_statfs(NULL, lov->lov_tgts[index]->ltd_exp, &stat_buf, |
| cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), |
| flags); |
| if (rc) |
| return rc; |
| if (copy_to_user(data->ioc_pbuf1, &stat_buf, |
| min_t(unsigned long, data->ioc_plen1, |
| sizeof(stat_buf)))) |
| return -EFAULT; |
| break; |
| } |
| case OBD_IOC_LOV_GET_CONFIG: { |
| struct obd_ioctl_data *data; |
| struct lov_desc *desc; |
| char *buf = NULL; |
| __u32 *genp; |
| |
| len = 0; |
| if (obd_ioctl_getdata(&buf, &len, uarg)) |
| return -EINVAL; |
| |
| data = (struct obd_ioctl_data *)buf; |
| |
| if (sizeof(*desc) > data->ioc_inllen1) { |
| kvfree(buf); |
| return -EINVAL; |
| } |
| |
| if (sizeof(uuidp->uuid) * count > data->ioc_inllen2) { |
| kvfree(buf); |
| return -EINVAL; |
| } |
| |
| if (sizeof(__u32) * count > data->ioc_inllen3) { |
| kvfree(buf); |
| return -EINVAL; |
| } |
| |
| desc = (struct lov_desc *)data->ioc_inlbuf1; |
| memcpy(desc, &lov->desc, sizeof(*desc)); |
| |
| uuidp = (struct obd_uuid *)data->ioc_inlbuf2; |
| genp = (__u32 *)data->ioc_inlbuf3; |
| /* the uuid will be empty for deleted OSTs */ |
| for (i = 0; i < count; i++, uuidp++, genp++) { |
| if (!lov->lov_tgts[i]) |
| continue; |
| *uuidp = lov->lov_tgts[i]->ltd_uuid; |
| *genp = lov->lov_tgts[i]->ltd_gen; |
| } |
| |
| if (copy_to_user(uarg, buf, len)) |
| rc = -EFAULT; |
| kvfree(buf); |
| break; |
| } |
| case OBD_IOC_QUOTACTL: { |
| struct if_quotactl *qctl = karg; |
| struct lov_tgt_desc *tgt = NULL; |
| struct obd_quotactl *oqctl; |
| |
| if (qctl->qc_valid == QC_OSTIDX) { |
| if (count <= qctl->qc_idx) |
| return -EINVAL; |
| |
| tgt = lov->lov_tgts[qctl->qc_idx]; |
| if (!tgt || !tgt->ltd_exp) |
| return -EINVAL; |
| } else if (qctl->qc_valid == QC_UUID) { |
| for (i = 0; i < count; i++) { |
| tgt = lov->lov_tgts[i]; |
| if (!tgt || |
| !obd_uuid_equals(&tgt->ltd_uuid, |
| &qctl->obd_uuid)) |
| continue; |
| |
| if (!tgt->ltd_exp) |
| return -EINVAL; |
| |
| break; |
| } |
| } else { |
| return -EINVAL; |
| } |
| |
| if (i >= count) |
| return -EAGAIN; |
| |
| LASSERT(tgt && tgt->ltd_exp); |
| oqctl = kzalloc(sizeof(*oqctl), GFP_NOFS); |
| if (!oqctl) |
| return -ENOMEM; |
| |
| QCTL_COPY(oqctl, qctl); |
| rc = obd_quotactl(tgt->ltd_exp, oqctl); |
| if (rc == 0) { |
| QCTL_COPY(qctl, oqctl); |
| qctl->qc_valid = QC_OSTIDX; |
| qctl->obd_uuid = tgt->ltd_uuid; |
| } |
| kfree(oqctl); |
| break; |
| } |
| default: { |
| int set = 0; |
| |
| if (count == 0) |
| return -ENOTTY; |
| |
| for (i = 0; i < count; i++) { |
| int err; |
| struct obd_device *osc_obd; |
| |
| /* OST was disconnected */ |
| if (!lov->lov_tgts[i] || !lov->lov_tgts[i]->ltd_exp) |
| continue; |
| |
| /* ll_umount_begin() sets force flag but for lov, not |
| * osc. Let's pass it through |
| */ |
| osc_obd = class_exp2obd(lov->lov_tgts[i]->ltd_exp); |
| osc_obd->obd_force = obddev->obd_force; |
| err = obd_iocontrol(cmd, lov->lov_tgts[i]->ltd_exp, |
| len, karg, uarg); |
| if (err) { |
| if (lov->lov_tgts[i]->ltd_active) { |
| CDEBUG(err == -ENOTTY ? |
| D_IOCTL : D_WARNING, |
| "iocontrol OSC %s on OST idx %d cmd %x: err = %d\n", |
| lov_uuid2str(lov, i), |
| i, cmd, err); |
| if (!rc) |
| rc = err; |
| } |
| } else { |
| set = 1; |
| } |
| } |
| if (!set && !rc) |
| rc = -EIO; |
| } |
| } |
| |
| return rc; |
| } |
| |
| static int lov_get_info(const struct lu_env *env, struct obd_export *exp, |
| __u32 keylen, void *key, __u32 *vallen, void *val) |
| { |
| struct obd_device *obddev = class_exp2obd(exp); |
| struct lov_obd *lov = &obddev->u.lov; |
| struct lov_desc *ld = &lov->desc; |
| int rc = 0; |
| |
| if (!vallen || !val) |
| return -EFAULT; |
| |
| obd_getref(obddev); |
| |
| if (KEY_IS(KEY_MAX_EASIZE)) { |
| u32 max_stripe_count = min_t(u32, ld->ld_active_tgt_count, |
| LOV_MAX_STRIPE_COUNT); |
| |
| *((u32 *)val) = lov_mds_md_size(max_stripe_count, LOV_MAGIC_V3); |
| } else if (KEY_IS(KEY_DEFAULT_EASIZE)) { |
| u32 def_stripe_count = min_t(u32, ld->ld_default_stripe_count, |
| LOV_MAX_STRIPE_COUNT); |
| |
| *((u32 *)val) = lov_mds_md_size(def_stripe_count, LOV_MAGIC_V3); |
| } else if (KEY_IS(KEY_TGT_COUNT)) { |
| *((int *)val) = lov->desc.ld_tgt_count; |
| } else { |
| rc = -EINVAL; |
| } |
| |
| obd_putref(obddev); |
| return rc; |
| } |
| |
| static int lov_set_info_async(const struct lu_env *env, struct obd_export *exp, |
| u32 keylen, void *key, u32 vallen, |
| void *val, struct ptlrpc_request_set *set) |
| { |
| struct obd_device *obddev = class_exp2obd(exp); |
| struct lov_obd *lov = &obddev->u.lov; |
| u32 count; |
| int i, rc = 0, err; |
| struct lov_tgt_desc *tgt; |
| int do_inactive = 0, no_set = 0; |
| |
| if (!set) { |
| no_set = 1; |
| set = ptlrpc_prep_set(); |
| if (!set) |
| return -ENOMEM; |
| } |
| |
| obd_getref(obddev); |
| count = lov->desc.ld_tgt_count; |
| |
| if (KEY_IS(KEY_CHECKSUM)) { |
| do_inactive = 1; |
| } else if (KEY_IS(KEY_CACHE_SET)) { |
| LASSERT(!lov->lov_cache); |
| lov->lov_cache = val; |
| do_inactive = 1; |
| cl_cache_incref(lov->lov_cache); |
| } |
| |
| for (i = 0; i < count; i++) { |
| tgt = lov->lov_tgts[i]; |
| |
| /* OST was disconnected */ |
| if (!tgt || !tgt->ltd_exp) |
| continue; |
| |
| /* OST is inactive and we don't want inactive OSCs */ |
| if (!tgt->ltd_active && !do_inactive) |
| continue; |
| |
| err = obd_set_info_async(env, tgt->ltd_exp, keylen, key, |
| vallen, val, set); |
| if (!rc) |
| rc = err; |
| } |
| |
| obd_putref(obddev); |
| if (no_set) { |
| err = ptlrpc_set_wait(set); |
| if (!rc) |
| rc = err; |
| ptlrpc_set_destroy(set); |
| } |
| return rc; |
| } |
| |
| void lov_stripe_lock(struct lov_stripe_md *md) |
| __acquires(&md->lsm_lock) |
| { |
| LASSERT(md->lsm_lock_owner != current_pid()); |
| spin_lock(&md->lsm_lock); |
| LASSERT(md->lsm_lock_owner == 0); |
| md->lsm_lock_owner = current_pid(); |
| } |
| |
| void lov_stripe_unlock(struct lov_stripe_md *md) |
| __releases(&md->lsm_lock) |
| { |
| LASSERT(md->lsm_lock_owner == current_pid()); |
| md->lsm_lock_owner = 0; |
| spin_unlock(&md->lsm_lock); |
| } |
| |
| static int lov_quotactl(struct obd_device *obd, struct obd_export *exp, |
| struct obd_quotactl *oqctl) |
| { |
| struct lov_obd *lov = &obd->u.lov; |
| struct lov_tgt_desc *tgt; |
| __u64 curspace = 0; |
| __u64 bhardlimit = 0; |
| int i, rc = 0; |
| |
| if (oqctl->qc_cmd != Q_GETOQUOTA && |
| oqctl->qc_cmd != LUSTRE_Q_SETQUOTA) { |
| CERROR("bad quota opc %x for lov obd\n", oqctl->qc_cmd); |
| return -EFAULT; |
| } |
| |
| /* for lov tgt */ |
| obd_getref(obd); |
| for (i = 0; i < lov->desc.ld_tgt_count; i++) { |
| int err; |
| |
| tgt = lov->lov_tgts[i]; |
| |
| if (!tgt) |
| continue; |
| |
| if (!tgt->ltd_active || tgt->ltd_reap) { |
| if (oqctl->qc_cmd == Q_GETOQUOTA && |
| lov->lov_tgts[i]->ltd_activate) { |
| rc = -EREMOTEIO; |
| CERROR("ost %d is inactive\n", i); |
| } else { |
| CDEBUG(D_HA, "ost %d is inactive\n", i); |
| } |
| continue; |
| } |
| |
| err = obd_quotactl(tgt->ltd_exp, oqctl); |
| if (err) { |
| if (tgt->ltd_active && !rc) |
| rc = err; |
| continue; |
| } |
| |
| if (oqctl->qc_cmd == Q_GETOQUOTA) { |
| curspace += oqctl->qc_dqblk.dqb_curspace; |
| bhardlimit += oqctl->qc_dqblk.dqb_bhardlimit; |
| } |
| } |
| obd_putref(obd); |
| |
| if (oqctl->qc_cmd == Q_GETOQUOTA) { |
| oqctl->qc_dqblk.dqb_curspace = curspace; |
| oqctl->qc_dqblk.dqb_bhardlimit = bhardlimit; |
| } |
| return rc; |
| } |
| |
| static struct obd_ops lov_obd_ops = { |
| .owner = THIS_MODULE, |
| .setup = lov_setup, |
| .cleanup = lov_cleanup, |
| /*.process_config = lov_process_config,*/ |
| .connect = lov_connect, |
| .disconnect = lov_disconnect, |
| .statfs = lov_statfs, |
| .statfs_async = lov_statfs_async, |
| .iocontrol = lov_iocontrol, |
| .get_info = lov_get_info, |
| .set_info_async = lov_set_info_async, |
| .notify = lov_notify, |
| .pool_new = lov_pool_new, |
| .pool_rem = lov_pool_remove, |
| .pool_add = lov_pool_add, |
| .pool_del = lov_pool_del, |
| .getref = lov_getref, |
| .putref = lov_putref, |
| .quotactl = lov_quotactl, |
| }; |
| |
| struct kmem_cache *lov_oinfo_slab; |
| |
| static int __init lov_init(void) |
| { |
| struct lprocfs_static_vars lvars = { NULL }; |
| int rc; |
| |
| /* print an address of _any_ initialized kernel symbol from this |
| * module, to allow debugging with gdb that doesn't support data |
| * symbols from modules. |
| */ |
| CDEBUG(D_INFO, "Lustre LOV module (%p).\n", &lov_caches); |
| |
| rc = lu_kmem_init(lov_caches); |
| if (rc) |
| return rc; |
| |
| lov_oinfo_slab = kmem_cache_create("lov_oinfo", |
| sizeof(struct lov_oinfo), |
| 0, SLAB_HWCACHE_ALIGN, NULL); |
| if (!lov_oinfo_slab) { |
| lu_kmem_fini(lov_caches); |
| return -ENOMEM; |
| } |
| lprocfs_lov_init_vars(&lvars); |
| |
| rc = class_register_type(&lov_obd_ops, NULL, |
| LUSTRE_LOV_NAME, &lov_device_type); |
| |
| if (rc) { |
| kmem_cache_destroy(lov_oinfo_slab); |
| lu_kmem_fini(lov_caches); |
| } |
| |
| return rc; |
| } |
| |
| static void /*__exit*/ lov_exit(void) |
| { |
| class_unregister_type(LUSTRE_LOV_NAME); |
| kmem_cache_destroy(lov_oinfo_slab); |
| |
| lu_kmem_fini(lov_caches); |
| } |
| |
| MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>"); |
| MODULE_DESCRIPTION("Lustre Logical Object Volume"); |
| MODULE_LICENSE("GPL"); |
| MODULE_VERSION(LUSTRE_VERSION_STRING); |
| |
| module_init(lov_init); |
| module_exit(lov_exit); |