linux-kernel - [PATCH 079/124] staging: lustre: mgc: add nid iteration

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Date:   Sun, 18 Sep 2016 16:38:18 -0400
From:   James Simmons <jsimmons@...radead.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devel@...verdev.osuosl.org,
        Andreas Dilger <andreas.dilger@...el.com>,
        Oleg Drokin <oleg.drokin@...el.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Lustre Development List <lustre-devel@...ts.lustre.org>,
        Alexander Boyko <alexander.boyko@...gate.com>,
        James Simmons <jsimmons@...radead.org>
Subject: [PATCH 079/124] staging: lustre: mgc: add nid iteration

From: Alexander Boyko <alexander.boyko@...gate.com>

mgc_apply_recover_logs use only first nid from entry,
this could be the problem for a cluster with several network
address for a one node.

Signed-off-by: Alexander Boyko <alexander.boyko@...gate.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5950
Xyratex-bug-id: MRP-2255
Reviewed-on: http://review.whamcloud.com/12829
Reviewed-by: Andreas Dilger <andreas.dilger@...el.com>
Reviewed-by: Mike Pershin <mike.pershin@...el.com>
Reviewed-by: Ann Koehler <amk@...y.com>
Signed-off-by: James Simmons <jsimmons@...radead.org>
---
 drivers/staging/lustre/lustre/mgc/mgc_request.c |   16 +++++++++++-----
 1 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/lustre/lustre/mgc/mgc_request.c b/drivers/staging/lustre/lustre/mgc/mgc_request.c
index 2191ca1..23374ca 100644
--- a/drivers/staging/lustre/lustre/mgc/mgc_request.c
+++ b/drivers/staging/lustre/lustre/mgc/mgc_request.c
@@ -1159,7 +1159,7 @@ static int mgc_apply_recover_logs(struct obd_device *mgc,
 
 	while (datalen > 0) {
 		int   entry_len = sizeof(*entry);
-		int   is_ost;
+		int is_ost, i;
 		struct obd_device *obd;
 		char *obdname;
 		char *cname;
@@ -1265,11 +1265,17 @@ static int mgc_apply_recover_logs(struct obd_device *mgc,
 			continue;
 		}
 
-		/* TODO: iterate all nids to find one */
+		/* iterate all nids to find one */
 		/* find uuid by nid */
-		rc = client_import_find_conn(obd->u.cli.cl_import,
-					     entry->u.nids[0],
-					     (struct obd_uuid *)uuid);
+		rc = -ENOENT;
+		for (i = 0; i < entry->mne_nid_count; i++) {
+			rc = client_import_find_conn(obd->u.cli.cl_import,
+						     entry->u.nids[0],
+						     (struct obd_uuid *)uuid);
+			if (!rc)
+				break;
+		}
+
 		up_read(&obd->u.cli.cl_sem);
 		if (rc < 0) {
 			CERROR("mgc: cannot find uuid by nid %s\n",
-- 
1.7.1