From: hongchao.zhang <Hongchao.Zhang@sun.com>
Date: Wed, 28 Jul 2010 22:54:29 +0000 (+0400)
Subject: b=23139 workaround to avoid assertion in osc_init_grant
X-Git-Tag: 2.0.50~28
X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=commitdiff_plain;h=9dc3b9363ad52b69e0c6a4261be5a298dba98ddf

b=23139 workaround to avoid assertion in osc_init_grant

workaround for 1.6 servers which don't have the patch
from bug20278 applied

i=oleg.drokin
i=eric.mei
---

diff --git a/lustre/osc/osc_request.c b/lustre/osc/osc_request.c
index b8914c3..0f2212b 100644
--- a/lustre/osc/osc_request.c
+++ b/lustre/osc/osc_request.c
@@ -1087,11 +1087,21 @@ static void osc_init_grant(struct client_obd *cli, struct obd_connect_data *ocd)
                 cli->cl_avail_grant = ocd->ocd_grant;
         else
                 cli->cl_avail_grant = ocd->ocd_grant - cli->cl_dirty;
+
+        if (cli->cl_avail_grant < 0) {
+                CWARN("%s: available grant < 0, the OSS is probably not running"
+                      " with patch from bug20278 (%ld) \n",
+                      cli->cl_import->imp_obd->obd_name, cli->cl_avail_grant);
+                /* workaround for 1.6 servers which do not have 
+                 * the patch from bug20278 */
+                cli->cl_avail_grant = ocd->ocd_grant;
+        }
+
         client_obd_list_unlock(&cli->cl_loi_list_lock);
 
-        CDEBUG(D_CACHE, "setting cl_avail_grant: %ld cl_lost_grant: %ld \n",
+        CDEBUG(D_CACHE, "%s, setting cl_avail_grant: %ld cl_lost_grant: %ld \n",
+               cli->cl_import->imp_obd->obd_name,
                cli->cl_avail_grant, cli->cl_lost_grant);
-        LASSERT(cli->cl_avail_grant >= 0);
 
         if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT_SHRINK &&
             cfs_list_empty(&cli->cl_grant_shrink_list))