Branch HEAD

b=16205
i=johann, sheng.yang

use a macro defining ldlm timeout value on MDS.

lustre/include/obd_support.h

@@ -75,8 +75,9 @@ int obd_alloc_fail(const void *ptr, const char *name, const char *type,
                    size_t size, const char *file, int line);
 
 /* Timeout definitions */
-#define OBD_TIMEOUT_DEFAULT 100
-#define LDLM_TIMEOUT_DEFAULT 20
+#define OBD_TIMEOUT_DEFAULT             100
+#define LDLM_TIMEOUT_DEFAULT            20
+#define MDS_LDLM_TIMEOUT_DEFAULT        6
 /* Time to wait for all clients to reconnect during recovery */
 /* Should be very conservative; must catch the first reconnect after reboot */
 #define OBD_RECOVERY_FACTOR (3) /* times obd_timeout */

lustre/mdt/mdt_handler.c

@@ -4008,8 +4008,10 @@ static int mdt_init0(const struct lu_env *env, struct mdt_device *m,
 
         mdt_init_capa_ctxt(env, m);
 
+        /* we use a shorter ldlm_timeout on MDS for keep bumping on
+         * might-be slow processing OST */
         if (ldlm_timeout == LDLM_TIMEOUT_DEFAULT)
-                ldlm_timeout = 6;
+                ldlm_timeout = MDS_LDLM_TIMEOUT_DEFAULT;
 
         RETURN(0);