Rev 343: paraoid check for empty db on attach in http://samba.org/~tridge/ctdb

[tridge at samba.org]

------------------------------------------------------------
revno: 343
revision-id: tridge at samba.org-20070525084849-chpdtiih9av0o5ji
parent: tridge at samba.org-20070525071650-qvhjv520xjvzhubs
committer: Andrew Tridgell <tridge at samba.org>
branch nick: tridge
timestamp: Fri 2007-05-25 18:48:49 +1000
message:
  paraoid check for empty db on attach
modified:
  common/ctdb_ltdb.c             ctdb_ltdb.c-20061128065342-to93h6eejj5kon81-2
=== modified file 'common/ctdb_ltdb.c'
--- a/common/ctdb_ltdb.c	2007-05-19 03:45:24 +0000
+++ b/common/ctdb_ltdb.c	2007-05-25 08:48:49 +0000
@@ -318,6 +318,20 @@
 
 
 /*
+  paraoid check to see if the db is empty
+ */
+static void ctdb_check_db_empty(struct ctdb_db_context *ctdb_db)
+{
+	struct tdb_context *tdb = ctdb_db->ltdb->tdb;
+	int count = tdb_traverse_read(tdb, NULL, NULL);
+	if (count != 0) {
+		DEBUG(0,(__location__ " tdb '%s' not empty on attach! aborting\n",
+			 ctdb_db->db_path));
+		ctdb_fatal(ctdb_db->ctdb, "database not empty on attach");
+	}
+}
+
+/*
   a client has asked to attach a new database
  */
 int32_t ctdb_control_db_attach(struct ctdb_context *ctdb, TDB_DATA indata,
@@ -384,6 +398,8 @@
 		return -1;
 	}
 
+	ctdb_check_db_empty(ctdb_db);
+
 	DLIST_ADD(ctdb->db_list, ctdb_db);
 
 	/*