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-rw-r--r--block/qcow2.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/block/qcow2.c b/block/qcow2.c
index b7c5994f0d..7391b497f7 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -3133,7 +3133,7 @@ qcow2_co_pwritev_compressed(BlockDriverState *bs, uint64_t offset,
         /* align end of file to a sector boundary to ease reading with
            sector based I/Os */
         cluster_offset = bdrv_getlength(bs->file->bs);
-        return bdrv_truncate(bs->file, cluster_offset, NULL);
+        return bdrv_truncate(bs->file, cluster_offset, PREALLOC_MODE_OFF, NULL);
     }
 
     buf = qemu_blockalign(bs, s->cluster_size);
@@ -3349,7 +3349,7 @@ static int make_completely_empty(BlockDriverState *bs)
     }
 
     ret = bdrv_truncate(bs->file, (3 + l1_clusters) * s->cluster_size,
-                        &local_err);
+                        PREALLOC_MODE_OFF, &local_err);
     if (ret < 0) {
         error_report_err(local_err);
         goto fail;