From: Bobi Jam <bobijam@whamcloud.com>
Date: Tue, 15 May 2012 14:10:10 +0000 (+0800)
Subject: LU-1366 utils: disable ldiskfs extents feature for MDT
X-Git-Tag: 2.2.53~18
X-Git-Url: https://git.whamcloud.com/gitweb?a=commitdiff_plain;h=8a25827236628908c641c893643c0fcb142fceba;p=fs%2Flustre-release.git

LU-1366 utils: disable ldiskfs extents feature for MDT

Explicitly disable "extents" for MDT filesystem if it's based on ext4,
it provides no benifit for MDT.

Signed-off-by: Bobi Jam <bobijam@whamcloud.com>
Change-Id: I9cb4d9cbaa80096cb8182e307e4911a92004ddd4
Reviewed-on: http://review.whamcloud.com/2797
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
---

diff --git a/lustre/utils/mkfs_lustre.c b/lustre/utils/mkfs_lustre.c
index eadca90..e1492d0 100644
--- a/lustre/utils/mkfs_lustre.c
+++ b/lustre/utils/mkfs_lustre.c
@@ -621,10 +621,11 @@ static void enable_default_ext4_features(struct mkfs_opts *mop, char *anchor,
                 append_unique(anchor, user_spec ? "," : " -O ",
                               "extents", NULL, sizeof(mop->mo_mkfsopts));
                 append_unique(anchor, ",", "uninit_bg", NULL, maxbuflen);
-        } else if (IS_MDT(&mop->mo_ldd)) {
-                append_unique(anchor, user_spec ? "," : " -O ",
-                              "dirdata", NULL, maxbuflen);
-                append_unique(anchor, ",", "uninit_bg", NULL, maxbuflen);
+	} else if (IS_MDT(&mop->mo_ldd)) {
+		append_unique(anchor, user_spec ? "," : " -O ",
+			      "dirdata", NULL, maxbuflen);
+		append_unique(anchor, ",", "uninit_bg", NULL, maxbuflen);
+		append_unique(anchor, ",", "^extents", NULL, maxbuflen);
         } else {
                 append_unique(anchor, user_spec ? "," : " -O ",
                               "uninit_bg", NULL, maxbuflen);