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-rw-r--r--block/qcow2.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/block/qcow2.h b/block/qcow2.h
index a019831838..e1ae3e8c2b 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -54,6 +54,8 @@
/* Must be at least 4 to cover all cases of refcount table growth */
#define REFCOUNT_CACHE_SIZE 4
+#define DEFAULT_CLUSTER_SIZE 65536
+
typedef struct QCowHeader {
uint32_t magic;
uint32_t version;