+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.