<3>xfs_admin<1> [ <3>-elu<1>] [ <3>-L <2>label<1> ] [ <3>-U <2>uuid<1> ] device
<3>xfs_admin -f<1> [ <3>-elu<1>] [ <3>-L <2>label<1> ] [ <3>-U <2>uuid<1> ] filename

<3>-e<1>

Enables unwritten extent support on a filesystem that does not already have this enabled.

<3>-f<1>

Specifies that the filesystem image to be processed is stored in a regular file (see the <2>mkfs.xfs<1> <3>-d<1> <2>file<1> option).

<3>-l<1>

Print the current filesystem label.

<3>-u<1>

Print the current filesystem UUID (Universally Unique IDentifier).

<3>-L<1> <2>label<1>

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 ``c -- '' value for label .

<3>-U<1> <2>UUID<1>

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.