jfs_tune
adjusts parameters on JFS filesystems
TLDR
Show filesystem info
$ sudo jfs_tune [/dev/sda1]
Set volume label$ sudo jfs_tune -L [label] [/dev/sda1]
Change UUID$ sudo jfs_tune -U [random] [/dev/sda1]
List filesystem options$ jfs_tune -l [/dev/sda1]
SYNOPSIS
jfs_tune [options] device
DESCRIPTION
jfs_tune adjusts parameters on JFS filesystems. It sets labels, UUIDs, and other filesystem metadata.
The tool works on unmounted filesystems. It's similar to tune2fs for ext filesystems.
PARAMETERS
DEVICE
JFS filesystem device.-L LABEL
Set volume label.-U UUID
Set or generate UUID.-l
List filesystem info.-J OPTIONS
External journal options.--help
Display help information.
CAVEATS
JFS filesystems only. Unmount before use. Linux utility.
HISTORY
jfs_tune is part of jfsutils, providing administration tools for the JFS filesystem ported from IBM's AIX.