Provided by:
xfsprogs_2.7.7-1_i386 
NAME
xfs_admin - change parameters of an XFS filesystem
SYNOPSIS
xfs_admin [ -elu] [ -L label ] [ -U uuid ] device
xfs_admin -f [ -elu] [ -L label ] [ -U uuid ] filename
DESCRIPTION
xfs_admin uses the xfs_db(8) command to modify various parameters of a
filesystem.
Devices that are mounted cannot be modified. Administrators must
unmount filesystems before xfs_admin or xfs_db can convert parameters.
A number of parameters of a mounted filesystem can be examined and
modified using the xfs_growfs(8) command.
OPTIONS
-e Enables unwritten extent support on a filesystem that does not
already have this enabled.
-f Specifies that the filesystem image to be processed is stored in a
regular file (see the mkfs.xfs -d file option).
-l Print the current filesystem label.
-u Print the current filesystem UUID (Universally Unique IDentifier).
-L label
Set the filesystem label. XFS filesystem labels can be at most 12
characters long; if label is longer than 12 characters, xfs_admin
will truncate it and print a warning message. The filesystem
label can be cleared using the special ‘‘--’’ value for label.
-U UUID
Set the UUID of the filesystem. A sample UUID looks like this:
"c1b9d5a2-f162-11cf-9ece-0020afc76f16". The uuid may also be nil,
which will set the filesystem UUID to the null UUID. The uuid may
also be generate, which will generate a new UUID for the
filesystem.
The mount(8) manual entry describes how to mount a filesystem using its
label or UUID, rather than its block special device name.
SEE ALSO
mkfs.xfs(8), mount(8), xfs_db(8), xfs_growfs(8), xfs(5).
xfs_admin(8)