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block: Block all intermediate nodes in commit_active_start() 

When block-commit is launched without the top parameter, it uses
internally a mirror block job. In that case all intermediate nodes
between the active and base nodes must be blocked as well.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Alberto Garcia 2016-10-28 10:08:09 +03:00 committed by Kevin Wolf
parent 3e4c5122cb
commit f3ede4b05d
1 changed files with 8 additions and 0 deletions
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8
block/mirror.c
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@ -997,6 +997,14 @@ static void mirror_start_job(const char *job_id, BlockDriverState *bs,
}
block_job_add_bdrv(&s->common, target);
/* In commit_active_start() all intermediate nodes disappear, so
* any jobs in them must be blocked */
if (bdrv_chain_contains(bs, target)) {
BlockDriverState *iter;
for (iter = backing_bs(bs); iter != target; iter = backing_bs(iter)) {
block_job_add_bdrv(&s->common, iter);
}
}
s->common.co = qemu_coroutine_create(mirror_run, s);
trace_mirror_start(bs, s, s->common.co, opaque);