b=20758 Update SLES10 kernel to 2.6.16.60-0.42.8(only patchless).

[fs/lustre-release.git] / lustre / doc / mkfs.lustre.8

diff --git a/lustre/doc/mkfs.lustre.8 b/lustre/doc/mkfs.lustre.8
index 7ae7caf..32a4098 100644 (file)
--- a/lustre/doc/mkfs.lustre.8
+++ b/lustre/doc/mkfs.lustre.8
@@ -1,5 +1,4 @@
 .\" -*- nroff -*-
-.\" Copyright 2006 by Cluster File Systems, Inc.  All Rights Reserved.
 .\" Copyright 2008 by Sun Microsystems.  All Rights Reserved.
 .\" This file may be copied under the terms of the GNU Public License.
 .\"
@@ -60,7 +59,14 @@ Force a particular OST or MDT index
 Format options for the backing fs. For example, ext3 options could be set here.
 .TP
 .BI \--mountfsoptions= opts
-Set permanent mount options, equivalent to setting in /etc/fstab
+Set the mount options that will be used when mounting the backing fs.
+WARNING: unlike earlier versions of \fBmkfs.lustre\fR, this version completely
+replaces the default mount options with those specified on the command line,
+issuing a warning on stderr if any of the default mount options are omitted.
+The defaults for \fIldiskfs\fR are
+OST: \fIerrors=remount-ro,mballoc,extents\fR;
+MGS/MDT: \fIerrors=remount-ro,iopen_nopriv,user_xattr\fR.
+\fBDO NOT\fR alter the default mount options unless you know what you are doing.
 .TP
 .BI \--mgsnode= nid,...  
 Set the NID(s) of the MGS node, required for all targets other than the MGS.