---
name: "tunegfs2"
section: "8"
platform: "linux"
package: "gfs2-utils"
version: "3.6.1-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/tunegfs2"
---

# tunegfs2(8)

View and manipulate gfs2 superblocks

## NAME

tunegfs2 - View and manipulate gfs2 superblocks

## SYNOPSIS

**tunegfs2** \[*OPTIONS*\] /dev/blockdevice

## DESCRIPTION

tunegfs2 allows viewing and manipulating the values contained in a GFS or GFS2 superblock. It is able to modify the *UUID* (on GFS2 only), *label*, *lockproto* and *locktable*.

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.

## OPTIONS

- **-h**

  Prints out usage information for this command.

- **-l**

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

- **-L** *\<label\>*

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

- **-o** *\[lockproto=\<proto\>\]* *\[locktable=\<table\>\]*

  Set mount options. Currently supported options include lockproto and locktable

- **-U** *\<uuid\>*

  Set the filesystem UUID

- **-V**

  Print out the information on the version of the tool.

- **-r** *\<version\>*

  Set the filesystem format version.

## SEE ALSO

[**gfs2**(5)](/gfs2/5.md)