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xfs_admin



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.   Administra­
       tors  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 filesys­
            tem UUID to the null UUID.  The uuid may also be gen­
            erate,  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)
  
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