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From: Max Reitz <mreitz@redhat.com>
To: qemu-block@nongnu.org
Cc: Kevin Wolf <kwolf@redhat.com>,
	Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>,
	qemu-devel@nongnu.org, Max Reitz <mreitz@redhat.com>
Subject: [PATCH for-6.2 v3 02/12] mirror: Keep s->synced on error
Date: Fri,  6 Aug 2021 11:38:49 +0200	[thread overview]
Message-ID: <20210806093859.706464-3-mreitz@redhat.com> (raw)
In-Reply-To: <20210806093859.706464-1-mreitz@redhat.com>

An error does not take us out of the READY phase, which is what
s->synced signifies.  It does of course mean that source and target are
no longer in sync, but that is what s->actively_sync is for -- s->synced
never meant that source and target are in sync, only that they were at
some point (and at that point we transitioned into the READY phase).

The tangible problem is that we transition to READY once we are in sync
and s->synced is false.  By resetting s->synced here, we will transition
from READY to READY once the error is resolved (if the job keeps
running), and that transition is not allowed.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
---
 block/mirror.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/block/mirror.c b/block/mirror.c
index 98fc66eabf..d73b704473 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -121,7 +121,6 @@ typedef enum MirrorMethod {
 static BlockErrorAction mirror_error_action(MirrorBlockJob *s, bool read,
                                             int error)
 {
-    s->synced = false;
     s->actively_synced = false;
     if (read) {
         return block_job_error_action(&s->common, s->on_source_error,
-- 
2.31.1



  parent reply	other threads:[~2021-08-06  9:42 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-06  9:38 [PATCH for-6.2 v3 00/12] mirror: Handle errors after READY cancel Max Reitz
2021-08-06  9:38 ` [PATCH for-6.2 v3 01/12] job: Context changes in job_completed_txn_abort() Max Reitz
2021-08-06 19:16   ` Eric Blake
2021-08-09 10:04     ` Max Reitz
2021-09-01 10:05   ` Vladimir Sementsov-Ogievskiy
2021-09-01 12:47     ` Hanna Reitz
2021-08-06  9:38 ` Max Reitz [this message]
2021-08-06  9:38 ` [PATCH for-6.2 v3 03/12] mirror: Drop s->synced Max Reitz
2021-08-06  9:38 ` [PATCH for-6.2 v3 04/12] job: Force-cancel jobs in a failed transaction Max Reitz
2021-08-06 19:22   ` Eric Blake
2021-09-01 10:08   ` Vladimir Sementsov-Ogievskiy
2021-08-06  9:38 ` [PATCH for-6.2 v3 05/12] job: @force parameter for job_cancel_sync{, _all}() Max Reitz
2021-08-06 19:39   ` Eric Blake
2021-08-09 10:09     ` Max Reitz
2021-09-01 10:20   ` [PATCH for-6.2 v3 05/12] job: @force parameter for job_cancel_sync{,_all}() Vladimir Sementsov-Ogievskiy
2021-09-01 12:49     ` Hanna Reitz
2021-09-01 11:04   ` Vladimir Sementsov-Ogievskiy
2021-09-01 12:50     ` Hanna Reitz
2021-08-06  9:38 ` [PATCH for-6.2 v3 06/12] jobs: Give Job.force_cancel more meaning Max Reitz
2021-08-06  9:38 ` [PATCH for-6.2 v3 07/12] job: Add job_cancel_requested() Max Reitz
2021-08-06 20:34   ` Eric Blake
2021-09-01 11:44   ` Vladimir Sementsov-Ogievskiy
2021-08-06  9:38 ` [PATCH for-6.2 v3 08/12] mirror: Use job_is_cancelled() Max Reitz
2021-08-06 20:35   ` Eric Blake
2021-09-01 11:45   ` Vladimir Sementsov-Ogievskiy
2021-08-06  9:38 ` [PATCH for-6.2 v3 09/12] mirror: Check job_is_cancelled() earlier Max Reitz
2021-08-06 20:36   ` Eric Blake
2021-09-01 12:11   ` Vladimir Sementsov-Ogievskiy
2021-08-06  9:38 ` [PATCH for-6.2 v3 10/12] mirror: Stop active mirroring after force-cancel Max Reitz
2021-08-06 20:37   ` Eric Blake
2021-09-01 12:16   ` Vladimir Sementsov-Ogievskiy
2021-08-06  9:38 ` [PATCH for-6.2 v3 11/12] mirror: Do not clear .cancelled Max Reitz
2021-08-06 20:42   ` Eric Blake
2021-09-01 12:22   ` Vladimir Sementsov-Ogievskiy
2021-08-06  9:38 ` [PATCH for-6.2 v3 12/12] iotests: Add mirror-ready-cancel-error test Max Reitz

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