LU-275 I/O errors when lustre uses multipath devices

[fs/lustre-release.git] / lustre / mdt / mdt_fs.c

diff --git a/lustre/mdt/mdt_fs.c b/lustre/mdt/mdt_fs.c
index 5ce28b4..3996b80 100644 (file)
--- a/lustre/mdt/mdt_fs.c
+++ b/lustre/mdt/mdt_fs.c
@@ -26,7 +26,7 @@
  * GPL HEADER END
  */
 /*
- * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  */
 /*
@@ -50,6 +50,7 @@ int mdt_export_stats_init(struct obd_device *obd,
 {
         lnet_nid_t *client_nid = localdata;
         int        rc, newnid;
+        ENTRY;
 
         rc = lprocfs_exp_setup(exp, client_nid, &newnid);
         if (rc) {
@@ -57,22 +58,29 @@ int mdt_export_stats_init(struct obd_device *obd,
                  * /proc entries */
                 if (rc == -EALREADY)
                         rc = 0;
-                return rc;
+                RETURN(rc);
         }
-
-        if ((obd->md_stats == NULL) &&
-            (rc = lprocfs_alloc_md_stats(obd, LPROC_MDT_NR)))
-                return rc;
         if (newnid) {
-                /* Always add in ldlm_stats */
-                exp->exp_nid_stats->nid_ldlm_stats =
-                        lprocfs_alloc_stats(LDLM_LAST_OPC - LDLM_FIRST_OPC, 0);
-                if (exp->exp_nid_stats->nid_ldlm_stats == NULL)
+                struct nid_stat *tmp = exp->exp_nid_stats;
+                int num_stats;
+
+                num_stats = (sizeof(*obd->obd_type->typ_md_ops) / sizeof(void *)) +
+                            LPROC_MDT_LAST;
+                tmp->nid_stats = lprocfs_alloc_stats(num_stats,
+                                                     LPROCFS_STATS_FLAG_NOPERCPU);
+                if (tmp->nid_stats == NULL)
                         return -ENOMEM;
-                lprocfs_init_ldlm_stats(exp->exp_nid_stats->nid_ldlm_stats);
-                rc = lprocfs_register_stats(exp->exp_nid_stats->nid_proc,
-                                            "ldlm_stats",
-                                            exp->exp_nid_stats->nid_ldlm_stats);
+                lprocfs_init_mps_stats(LPROC_MDT_LAST, tmp->nid_stats);
+                mdt_stats_counter_init(tmp->nid_stats);
+                rc = lprocfs_register_stats(tmp->nid_proc, "stats",
+                                            tmp->nid_stats);
+                if (rc)
+                        GOTO(clean, rc);
+                rc = lprocfs_nid_ldlm_stats_init(tmp);
+                if (rc)
+                        GOTO(clean, rc);
         }
+        RETURN(0);
+ clean:
         return rc;
 }