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-rw-r--r--block/qcow2-bitmap.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/block/qcow2-bitmap.c b/block/qcow2-bitmap.c
index cb06954b4a..1cf6d2ab77 100644
--- a/block/qcow2-bitmap.c
+++ b/block/qcow2-bitmap.c
@@ -1748,3 +1748,10 @@ fail:
name, bdrv_get_device_or_node_name(bs));
return false;
}
+
+bool qcow2_supports_persistent_dirty_bitmap(BlockDriverState *bs)
+{
+ BDRVQcow2State *s = bs->opaque;
+
+ return s->qcow_version >= 3;
+}