.TH tunegfs2 8

.SH NAME
tunegfs2 - View and manipulate gfs2 superblocks

.SH SYNOPSIS
.B tunegfs2
[\fIOPTIONS\fR]
/dev/blockdevice

.SH DESCRIPTION
tunegfs2 allows viewing and manipulating the values contained in a
GFS or GFS2 superblock. It is able to modify the \fIUUID\fR (on GFS2 only),
\fIlabel\fR, \fIlockproto\fR and \fIlocktable\fR.

The values in the GFS2 superblock are read only on mount. Any
changes on a live filesystem will not take effect until the next
time it is mounted. Making changes on a live filesystem is not
recommended for this reason.

.SH OPTIONS

.TP
\fB-h\fP

Prints out usage information for this command.

.TP
\fB-l\fP

List contents of the filesystem superblock. Includes the current values of the
parameters that can be set by this program.

.TP
\fB-L\fP \fI<label>\fR

Change the filesystem label. Note that the GFS2 filesystem label is
also the locktable name.

.TP
\fB-o\fP \fI[lockproto=<proto>]\fR \fI[locktable=<table>]\fR

Set mount options. Currently supported options include lockproto and
locktable

.TP
\fB-U\fP \fI<uuid>\fR

Set the filesystem UUID

.TP
\fB-V\fP

Print out the information on the version of the tool.

.TP
\fB-r\fP \fI<version>\fR

Set the filesystem format version.

.SH SEE ALSO

\fBgfs2\fP(5)