diff options
Diffstat (limited to 'qemu-img.c')
| -rw-r--r-- | qemu-img.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/qemu-img.c b/qemu-img.c index 369c2e8ddf..c061fd0634 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -2099,7 +2099,9 @@ static int convert_do_copy(ImgConvertState *s) /* Check whether we have zero initialisation or can get it efficiently */ if (!s->has_zero_init && s->target_is_new && s->min_sparse && !s->target_has_backing) { + bdrv_graph_rdlock_main_loop(); s->has_zero_init = bdrv_has_zero_init(blk_bs(s->target)); + bdrv_graph_rdunlock_main_loop(); } /* Allocate buffer for copied data. For compressed images, only one cluster |