xfs_admin - change parameters of an XFS filesystem
xfs_admin [ lu] [ -L label ] [ -U uuid ] device
xfs_admin -f [ lu] [ -L label ] [ -U uuid ] filename
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.
|
-f |
Specifies that the filesystem image to be processed is stored in a regular file (see the mkfs.xfs -d file option). |
|
|
-l -u |
Print the current filesystem label. 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: "c1b9d5a2f16211cf9ece0020afc76f16". The uuid may also be null, 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.
mkfs.xfs(8), mount(8), xfs_db(8), xfs_growfs(8), xfs(5).