tree 14bdfe375481d8954ada1ddaa0bc84fcaba4e23d
parent d53733893dc43f4ebb5be510863c5debf0f8990b
author Philipp Reisner <philipp.reisner@linbit.com> 1283248850 +0200
committer Philipp Reisner <philipp.reisner@linbit.com> 1287074306 +0200

drbd: Disable activity log updates when the whole device is out of sync

When the complete device is marked as out of sync, we can disable
updates of the on disk AL. Currently AL updates are only disabled
if one uses the "invalidate-remote" command on an unconnected,
primary device, or when at attach time all bits in the bitmap are
set.

As of now, AL updated do not get disabled when a all bits becomes
set due to application writes to an unconnected DRBD device.
While this is a missing feature, it is not considered important,
and might get added later.

BTW, after initializing a "one legged" DRBD device
drbdadm create-md resX
drbdadm -- --force primary resX
AL updates also get disabled, until the first connect.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>