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-rw-r--r--ctdb/client/ctdb_client.c12
-rw-r--r--ctdb/include/ctdb_private.h1
-rw-r--r--ctdb/server/ctdb_ltdb_server.c3
-rw-r--r--ctdb/server/ctdb_tunables.c1
4 files changed, 16 insertions, 1 deletions
diff --git a/ctdb/client/ctdb_client.c b/ctdb/client/ctdb_client.c
index c8ab1cd6cb..df57302de0 100644
--- a/ctdb/client/ctdb_client.c
+++ b/ctdb/client/ctdb_client.c
@@ -1926,6 +1926,12 @@ int ctdb_ctrl_createdb(struct ctdb_context *ctdb, struct timeval timeout, uint32
tdb_flags = TDB_INCOMPATIBLE_HASH;
}
+#ifdef TDB_MUTEX_LOCKING
+ if (!persistent && ctdb->tunable.mutex_enabled == 1) {
+ tdb_flags |= TDB_MUTEX_LOCKING;
+ }
+#endif
+
ret = ctdb_control(ctdb, destnode, tdb_flags,
persistent?CTDB_CONTROL_DB_ATTACH_PERSISTENT:CTDB_CONTROL_DB_ATTACH,
0, data,
@@ -2073,6 +2079,12 @@ struct ctdb_db_context *ctdb_attach(struct ctdb_context *ctdb,
tdb_flags |= TDB_INCOMPATIBLE_HASH;
}
+#ifdef TDB_MUTEX_LOCKING
+ if (!persistent && ctdb->tunable.mutex_enabled == 1) {
+ tdb_flags |= TDB_MUTEX_LOCKING;
+ }
+#endif
+
/* tell ctdb daemon to attach */
ret = ctdb_control(ctdb, CTDB_CURRENT_NODE, tdb_flags,
persistent?CTDB_CONTROL_DB_ATTACH_PERSISTENT:CTDB_CONTROL_DB_ATTACH,
diff --git a/ctdb/include/ctdb_private.h b/ctdb/include/ctdb_private.h
index aeebed1b51..e94d2c84f6 100644
--- a/ctdb/include/ctdb_private.h
+++ b/ctdb/include/ctdb_private.h
@@ -126,6 +126,7 @@ struct ctdb_tunable {
uint32_t pulldb_preallocation_size;
uint32_t no_ip_host_on_all_disabled;
uint32_t samba3_hack;
+ uint32_t mutex_enabled;
};
/*
diff --git a/ctdb/server/ctdb_ltdb_server.c b/ctdb/server/ctdb_ltdb_server.c
index afa33d1485..55abf1f544 100644
--- a/ctdb/server/ctdb_ltdb_server.c
+++ b/ctdb/server/ctdb_ltdb_server.c
@@ -837,7 +837,8 @@ static int ctdb_local_attach(struct ctdb_context *ctdb, const char *db_name,
tdb_flags |= TDB_INCOMPATIBLE_HASH;
}
#ifdef TDB_MUTEX_LOCKING
- if (mutexes && tdb_runtime_check_for_robust_mutexes()) {
+ if (ctdb->tunable.mutex_enabled && mutexes &&
+ tdb_runtime_check_for_robust_mutexes()) {
tdb_flags |= TDB_MUTEX_LOCKING;
}
#endif
diff --git a/ctdb/server/ctdb_tunables.c b/ctdb/server/ctdb_tunables.c
index f760cb57bd..4a252b61ad 100644
--- a/ctdb/server/ctdb_tunables.c
+++ b/ctdb/server/ctdb_tunables.c
@@ -82,6 +82,7 @@ static const struct {
{ "PullDBPreallocation", 10*1024*1024, offsetof(struct ctdb_tunable, pulldb_preallocation_size), false },
{ "NoIPHostOnAllDisabled", 0, offsetof(struct ctdb_tunable, no_ip_host_on_all_disabled), false },
{ "Samba3AvoidDeadlocks", 0, offsetof(struct ctdb_tunable, samba3_hack), false },
+ { "TDBMutexEnabled", 0, offsetof(struct ctdb_tunable, mutex_enabled), false },
};
/*