leveldb: add compact() method

This will compact the entire store; it will be slow!

Signed-off-by: Sage Weil <sage@inktank.com>

3 files changed, 11 insertions, 0 deletions

diff --git a/src/mon/MonitorDBStore.h b/src/mon/MonitorDBStore.h
index ac2703ec5e6..b14c5aaae46 100644
--- a/src/mon/MonitorDBStore.h
+++ b/src/mon/MonitorDBStore.h
@@ -456,6 +456,10 @@ class MonitorDBStore
     return db->create_and_open(out);
   }
 
+  void compact() {
+    db->compact();
+  }
+
   MonitorDBStore(const string& path) : db(0) {
     string::const_reverse_iterator rit;
     int pos = 0;
diff --git a/src/mon/MonitorStore.h b/src/mon/MonitorStore.h
index 76b8363369e..fcb574fde5e 100644
--- a/src/mon/MonitorStore.h
+++ b/src/mon/MonitorStore.h
@@ -39,6 +39,8 @@ public:
   int umount();
   void sync();
 
+  void compact();
+
   // ints (stored as ascii)
   version_t get_int(const char *a, const char *b=0) WARN_UNUSED_RESULT;
   void put_int(version_t v, const char *a, const char *b=0);
diff --git a/src/os/LevelDBStore.h b/src/os/LevelDBStore.h
index 6b1afceb753..9f8cd52ca9c 100644
--- a/src/os/LevelDBStore.h
+++ b/src/os/LevelDBStore.h
@@ -33,6 +33,11 @@ class LevelDBStore : public KeyValueDB {
   int init(ostream &out, bool create_if_missing);
 
 public:
+  /// compact the underlying leveldb store
+  void compact() {
+    db->CompactRange(NULL, NULL);
+  }
+
   /**
    * options_t: Holds options which are minimally interpreted
    * on initialization and then passed through to LevelDB.