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[Qemu-devel] [PATCH 6/8] block/backup: issue progress updates for skippe

From: John Snow
Subject: [Qemu-devel] [PATCH 6/8] block/backup: issue progress updates for skipped regions
Date: Tue, 9 Jul 2019 21:05:54 -0400

The way bitmap backups work is by starting at 75% if it needs
to copy just 25% of the disk.

The way sync=top currently works, however, is to start at 0% and then
never update the progress if it doesn't copy a region. If it needs to
copy 25% of the disk, we'll finish at 25%.

Update the progress when we skip regions.

Signed-off-by: John Snow <address@hidden>
 block/backup.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/block/backup.c b/block/backup.c
index a64b768e24..38c4a688c6 100644
--- a/block/backup.c
+++ b/block/backup.c
@@ -417,6 +417,7 @@ static int coroutine_fn backup_loop(BackupBlockJob *job)
         if (job->sync_mode == MIRROR_SYNC_MODE_TOP &&
             bdrv_is_unallocated_range(bs, offset, job->cluster_size))
+            job_progress_update(&job->common.job, job->cluster_size);
             bdrv_reset_dirty_bitmap(job->copy_bitmap, offset,

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