From d587fb86342f153fa3f6d5e53a86bd1034e0dddd Mon Sep 17 00:00:00 2001
From: nathan <nathan>
Date: Tue, 2 May 2006 23:28:23 +0000
Subject: [PATCH] Branch b1_5 b=8007 Don't assume that unknown old targets are
 really part of the fs.

---
 lustre/mgs/mgs_handler.c    | 19 ++++++++++---------
 lustre/obdclass/obd_mount.c |  6 ++++++
 2 files changed, 16 insertions(+), 9 deletions(-)

diff --git a/lustre/mgs/mgs_handler.c b/lustre/mgs/mgs_handler.c
index 94dc87c..87d6ded 100644
--- a/lustre/mgs/mgs_handler.c
+++ b/lustre/mgs/mgs_handler.c
@@ -313,7 +313,9 @@ static int mgs_put_cfg_lock(struct lustre_handle *lockh)
         RETURN(0);
 }
 
-/* rc=0 means ok */
+/* rc=0 means ok
+      1 means update
+     -1 means error */
 static int mgs_check_target(struct obd_device *obd, struct mgs_target_info *mti)
 {
         int rc;
@@ -321,11 +323,11 @@ static int mgs_check_target(struct obd_device *obd, struct mgs_target_info *mti)
 
         rc = mgs_check_index(obd, mti);
         if (rc == 0) {
-                LCONSOLE_ERROR("Index for %s has disappeared!  "
-                               "Regenerating this portion of the logs."
-                               "\n", mti->mti_svname);
-                mti->mti_flags |= LDD_F_UPDATE;
-                rc = 1;
+                LCONSOLE_ERROR("%s claims to have registered, but this MGS "
+                               "does not know about it.  Resolve this issue "
+                               "with tunefs.lustre on that device\n",
+                               mti->mti_svname);
+                rc = -EINVAL;
         } else if (rc == -1) {
                 LCONSOLE_ERROR("Client log %s-client has disappeared! "
                                "Regenerating all logs.\n",
@@ -340,7 +342,6 @@ static int mgs_check_target(struct obd_device *obd, struct mgs_target_info *mti)
                 rc = mgs_check_failnid(obd, mti);
         }
 
-
         RETURN(rc);
 }
 
@@ -364,8 +365,8 @@ static int mgs_handle_target_reg(struct ptlrpc_request *req)
                        mti->mti_svname, obd_export_nid2str(req->rq_export));
                 rc = mgs_check_target(obd, mti);
                 /* above will set appropriate mti flags */
-                if (!rc) 
-                        /* Nothing wrong, don't revoke lock */
+                if (rc <= 0) 
+                        /* Nothing wrong, or fatal error */
                         GOTO(out_nolock, rc);
         }
 
diff --git a/lustre/obdclass/obd_mount.c b/lustre/obdclass/obd_mount.c
index 01a9b1b..99b7da2 100644
--- a/lustre/obdclass/obd_mount.c
+++ b/lustre/obdclass/obd_mount.c
@@ -1064,6 +1064,12 @@ static int server_start_targets(struct super_block *sb, struct vfsmount *mnt)
                 }
                 GOTO(out, rc);
         }
+        if (rc == -EINVAL) {
+                LCONSOLE_ERROR("The MGS is refusing to allow this server (%s) "
+                               "to start.  Please see messages on the MGS node."
+                               "\n", lsi->lsi_ldd->ldd_svname);
+                GOTO(out, rc);
+        }
 
         /* Let the target look up the mount using the target's name 
            (we can't pass the sb or mnt through class_process_config.) */
-- 
1.8.3.1