Lars Ellenberg e1fbc4ca9d drbd: Send P_NEG_ACK upon write error in protocol != C
In protocol != C, we forgot to send the P_NEG_ACK for failing writes.

Once we no longer submit to local disk, because we already "detached",
due to the typical "on-io-error detach;" config setting,
we already send the neg acks right away.

Only those requests that have been submitted,
and have been error-completed by the local disk,
would forget to send the neg-ack,
and only in asynchronous replication (protocol != C).
Unless this happened during resync,
where we already always send acks, regardless of protocol.

The primary side needs the P_NEG_ACK in order to mark
the affected block(s) for resync in its out-of-sync bitmap.

If the blocks in question are not re-written again,
we may miss to resync them later, causing data inconsistencies.

This patch will always send the neg-acks, and also at least try to
persist the out-of-sync status on the local node already.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-08-29 15:34:44 -06:00
..
2017-07-25 17:17:18 -07:00
2017-07-09 18:48:37 -07:00
2017-07-07 13:55:45 -07:00
2017-07-08 12:36:50 -07:00
2017-07-28 12:32:59 +10:00
2017-07-24 17:38:21 +02:00
2017-07-04 14:28:22 -07:00
2017-07-17 15:00:47 +02:00
2017-07-03 20:55:59 -07:00
2017-08-18 08:36:58 -06:00
2017-07-04 11:48:27 -07:00
2017-07-12 10:00:04 -07:00
2017-07-06 11:32:40 -07:00
2017-07-09 18:48:37 -07:00
2017-07-04 14:47:47 -07:00
2017-07-11 09:55:47 -07:00
2017-07-07 13:55:45 -07:00
2017-07-13 12:07:44 -07:00
2017-07-25 16:37:36 +03:00
2017-07-01 14:30:39 -07:00
2017-07-14 22:24:25 -07:00
2017-07-13 11:49:52 -07:00
2017-07-05 17:09:27 -07:00
2017-07-04 14:47:47 -07:00
2017-07-06 15:38:31 -07:00
2017-07-13 12:15:06 -07:00
2017-07-25 20:10:10 -07:00
2017-07-04 14:47:47 -07:00
2017-07-25 19:46:05 -07:00
2017-07-20 14:40:36 +02:00
2017-07-03 20:27:48 -07:00
2017-07-13 12:23:54 -07:00