[Qemu-devel] [RFC V1 01/14] qcow2: Add deduplication metrics structures.

["Benoît Canet" <benoit@irqsave.net>]

---
 block/qcow2.h         |    3 ++-
 include/block/block.h |   11 +++++++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/block/qcow2.h b/block/qcow2.h
index 29267a9..0729ff2 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -237,9 +237,10 @@ typedef struct BDRVQcowState {
     int32_t dedup_table_size;
     GTree *dedup_tree_by_hash;
     GTree *dedup_tree_by_sect;
+    CoMutex dedup_lock;
+    BlockDeduplicationMetrics dedup_metrics;
 
     CoMutex lock;
-    CoMutex dedup_lock;
 
     uint32_t crypt_method; /* current crypt method, 0 if no key yet */
     uint32_t crypt_method_header;
diff --git a/include/block/block.h b/include/block/block.h
index b81d200..16e1cf1 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -12,6 +12,17 @@
 typedef struct BlockDriver BlockDriver;
 typedef struct BlockJob BlockJob;
 
+typedef struct {
+    uint64_t deduplicated_clusters;
+    uint64_t non_deduplicated_clusters;
+    uint64_t missing_data_reads; /* reads used to complete partials clusters */
+    uint64_t ram_hash_creations;     /* RAM based lookup */
+    uint64_t ram_hash_deletions;     /* RAM based lookup */
+    uint64_t ram_usage;              /* RAM usage in bytes */
+    uint64_t deleted_clusters;       /* number of deleted clusters */
+    uint64_t refcount_overflows;     /* number of refcount overflows */
+} BlockDeduplicationMetrics;
+
 typedef struct BlockDriverInfo {
     /* in bytes, 0 if irrelevant */
     int cluster_size;
-- 
1.7.10.4