Commit ef53dc09 authored by Alberto Garcia's avatar Alberto Garcia Committed by Kevin Wolf
Browse files

block: Freeze the backing chain for the duration of the mirror job 



Signed-off-by: default avatarAlberto Garcia <berto@igalia.com>
Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent df827336

block/mirror.c

+8 −0
Original line number Diff line number Diff line
@@ -630,6 +630,10 @@ static int mirror_exit_common(Job *job) 
    }

    s->prepared = true;



    if (bdrv_chain_contains(src, target_bs)) {

        bdrv_unfreeze_backing_chain(mirror_top_bs, target_bs);

    }



    bdrv_release_dirty_bitmap(src, s->dirty_bitmap);



    /* Make sure that the source BDS doesn't go away during bdrv_replace_node,
@@ -1639,6 +1643,10 @@ static void mirror_start_job(const char *job_id, BlockDriverState *bs, 
                goto fail;

            }

        }



        if (bdrv_freeze_backing_chain(mirror_top_bs, target, errp) < 0) {

            goto fail;

        }

    }



    QTAILQ_INIT(&s->ops_in_flight);