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-rw-r--r--block/qcow.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/block/qcow.c b/block/qcow.c
index b0475b73a5..6a72dea049 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -1185,6 +1185,7 @@ static BlockDriver bdrv_qcow = {
.bdrv_co_create = qcow_co_create,
.bdrv_co_create_opts = qcow_co_create_opts,
.bdrv_has_zero_init = bdrv_has_zero_init_1,
+ .is_format = true,
.supports_backing = true,
.bdrv_refresh_limits = qcow_refresh_limits,