From 07fc9ced1c8583804804d3f652baa68326b52dfe Mon Sep 17 00:00:00 2001
From: bobijam <bobijam>
Date: Tue, 23 Dec 2008 05:38:36 +0000
Subject: [PATCH] Branch HEAD b=18049 o=johann i=adilger i=zhenyu.xu (bobijam)

Descriptoin: aborting recovery hang on MDS
Details    : don't throttle destroy RPCs for the MDT.
---
 lustre/ChangeLog         |  6 ++++++
 lustre/osc/osc_request.c | 27 +++++++++++++++------------
 2 files changed, 21 insertions(+), 12 deletions(-)

diff --git a/lustre/ChangeLog b/lustre/ChangeLog
index 6e39098..1991b6c 100644
--- a/lustre/ChangeLog
+++ b/lustre/ChangeLog
@@ -13,6 +13,12 @@ tbd  Sun Microsystems, Inc.
 	 removed cwd "./" (refer to Bugzilla 14399).
        * File join has been disabled in this release, refer to Bugzilla 16929.
 
+Severity   : normal
+Frequency  : start MDS on uncleanly shutdowned MDS device
+Bugzilla   : 18049
+Descriptoin: aborting recovery hang on MDS
+Details    : don't throttle destroy RPCs for the MDT.
+
 Severity   : major
 Frequency  : on remount
 Bugzilla   : 18018
diff --git a/lustre/osc/osc_request.c b/lustre/osc/osc_request.c
index 65c0be4..1812828 100644
--- a/lustre/osc/osc_request.c
+++ b/lustre/osc/osc_request.c
@@ -728,7 +728,6 @@ static int osc_destroy(struct obd_export *exp, struct obdo *oa,
         }
 
         req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
-        req->rq_interpret_reply = osc_destroy_interpret;
         ptlrpc_at_set_req_timeout(req);
 
         if (oti != NULL && oa->o_valid & OBD_MD_FLCOOKIE)
@@ -740,15 +739,19 @@ static int osc_destroy(struct obd_export *exp, struct obdo *oa,
         osc_pack_capa(req, body, (struct obd_capa *)capa);
         ptlrpc_request_set_replen(req);
 
-        if (!osc_can_send_destroy(cli)) {
-                struct l_wait_info lwi = { 0 };
-
-                /*
-                 * Wait until the number of on-going destroy RPCs drops
-                 * under max_rpc_in_flight
-                 */
-                l_wait_event_exclusive(cli->cl_destroy_waitq,
-                                       osc_can_send_destroy(cli), &lwi);
+        /* don't throttle destroy RPCs for the MDT */
+        if (!(cli->cl_import->imp_connect_flags_orig & OBD_CONNECT_MDS)) {
+                req->rq_interpret_reply = osc_destroy_interpret;
+                if (!osc_can_send_destroy(cli)) {
+                        struct l_wait_info lwi = { 0 };
+
+                        /*
+                         * Wait until the number of on-going destroy RPCs drops
+                         * under max_rpc_in_flight
+                         */
+                        l_wait_event_exclusive(cli->cl_destroy_waitq,
+                                               osc_can_send_destroy(cli), &lwi);
+                }
         }
 
         /* Do not wait for response */
@@ -3763,13 +3766,13 @@ static int osc_disconnect(struct obd_export *exp)
         ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
         if (ctxt) {
                 if (obd->u.cli.cl_conn_count == 1) {
-                        /* Flush any remaining cancel messages out to the 
+                        /* Flush any remaining cancel messages out to the
                          * target */
                         llog_sync(ctxt, exp);
                 }
                 llog_ctxt_put(ctxt);
         } else {
-                CDEBUG(D_HA, "No LLOG_SIZE_REPL_CTXT found in obd %p\n", 
+                CDEBUG(D_HA, "No LLOG_SIZE_REPL_CTXT found in obd %p\n",
                        obd);
         }
 
-- 
1.8.3.1