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-rw-r--r--block/backup.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/block/backup.c b/block/backup.c
index 1ee271f9f1..b26c22c4b8 100644
--- a/block/backup.c
+++ b/block/backup.c
@@ -657,7 +657,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
job->cluster_size = cluster_size;
job->copy_bitmap = copy_bitmap;
copy_bitmap = NULL;
- job->use_copy_range = true;
+ job->use_copy_range = !compress; /* compression isn't supported for it */
job->copy_range_size = MIN_NON_ZERO(blk_get_max_transfer(job->common.blk),
blk_get_max_transfer(job->target));
job->copy_range_size = MAX(job->cluster_size,