diff options
Diffstat (limited to 'block/qcow2.c')
-rw-r--r-- | block/qcow2.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/qcow2.c b/block/qcow2.c index 8fc8f8cc37..8c220ecdc5 100644 --- a/block/qcow2.c +++ b/block/qcow2.c @@ -998,7 +998,7 @@ exit: if (prealloc) { BlockDriverState *bs; bs = bdrv_new(""); - bdrv_open(bs, filename, BDRV_O_CACHE_WB); + bdrv_open(bs, filename, BDRV_O_CACHE_WB | BDRV_O_RDWR); preallocate(bs); bdrv_close(bs); } |