From: Artem Blagodarenko <artem.blagodarenko@seagate.com>
Date: Tue, 15 Sep 2015 10:32:14 +0000 (+0300)
Subject: LU-7160 mgs: Skip processing .bak files on MGS
X-Git-Tag: 2.8.57~18
X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=commitdiff_plain;h=0bb49b2624827490ca3ea6a146d96cf7cf2b402f

LU-7160 mgs: Skip processing .bak files on MGS

lctl replace_nids command saves previous version of
config files to file with original_name.bak file name.
This file should never be processed by MGS.

This patch adds code that skips file with .bak extention
from list to be processed by MGS.

Signed-off-by: Artem Blagodarenko <artem.blagodarenko@seagate.com>
Xyratex-bug-id: MRP-2742
Change-Id: I5ad5cf5548d395459d2245394ef3f7764fe8f0ca
Reviewed-on: http://review.whamcloud.com/16428
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Mike Pershin <mike.pershin@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
---

diff --git a/lustre/mgs/mgs_llog.c b/lustre/mgs/mgs_llog.c
index 2efea90..e307e16 100644
--- a/lustre/mgs/mgs_llog.c
+++ b/lustre/mgs/mgs_llog.c
@@ -100,6 +100,15 @@ int class_dentry_readdir(const struct lu_env *env,
 				goto next;
 		}
 
+		/* filter out ".bak" files */
+		/* sizeof(".bak") - 1 == 3 */
+		if (key_sz >= 3 &&
+		    !memcmp(".bak", key + key_sz - 3, 3)) {
+			CDEBUG(D_MGS, "Skipping backup file %.*s\n",
+			       key_sz, key);
+			goto next;
+		}
+
 		de = mgs_direntry_alloc(key_sz + 1);
 		if (de == NULL) {
 			rc = -ENOMEM;