Format options for the backing fs. For example, ext3 options could be set here.
.TP
.BI \--mountfsoptions= opts
-Set the mount options that will be used when mounting the backing fs.
+Set the persistent mount options that will be used when mounting Lustre 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.
MGS/MDT: \fIerrors=remount-ro,user_xattr\fR.
\fBDO NOT\fR alter the default mount options unless you know what you are doing.
.TP
+.BI \--backfs-mount-opts=opts
+Use these options for mounting backing fs while mkfs.lustre is working.
+.TP
.BI \--network= net,...
Network(s) to restrict this ost/mdt to. This option can be repeated as desired.
.TP