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Re: [Qemu-devel] [RFC 4/9] block: keep bitmap if incremental backup job


From: Stefan Hajnoczi
Subject: Re: [Qemu-devel] [RFC 4/9] block: keep bitmap if incremental backup job is cancelled
Date: Thu, 25 Jun 2015 13:51:26 +0100
User-agent: Mutt/1.5.23 (2014-03-12)

On Wed, Jun 24, 2015 at 07:35:05PM +0200, Max Reitz wrote:
> On 12.06.2015 12:09, Stefan Hajnoczi wrote:
> >Reclaim the dirty bitmap if an incremental backup block job is
> >cancelled.  The ret variable may be 0 when the job is cancelled so it's
> >not enough to check ret < 0.
> >
> >Signed-off-by: Stefan Hajnoczi <address@hidden>
> >---
> >  block/backup.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> >diff --git a/block/backup.c b/block/backup.c
> >index d3f648d..c1ad975 100644
> >--- a/block/backup.c
> >+++ b/block/backup.c
> >@@ -430,7 +430,7 @@ static void coroutine_fn backup_run(void *opaque)
> >      if (job->sync_bitmap) {
> >          BdrvDirtyBitmap *bm;
> >-        if (ret < 0) {
> >+        if (ret < 0 || block_job_is_cancelled(&job->common)) {
> >              /* Merge the successor back into the parent, delete nothing. */
> >              bm = bdrv_reclaim_dirty_bitmap(bs, job->sync_bitmap, NULL);
> >              assert(bm);
> 
> Since I can't find a seperate patch on qemu-devel or qemu-block yet:
> 
> Reviewed-by: Max Reitz <address@hidden>

Thanks, I must have gotten distracted before sending the email.

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