NAME

       gfs2_grow - Expand a GFS2 filesystem

SYNOPSIS

       gfs2_grow [OPTION]... <DEVICE|MOUNTPOINT>...

DESCRIPTION

       gfs2_grow  is  used to expand a GFS2 filesystem after the device upon which the filesystem
       resides has also been expanded.  By running  gfs2_grow  on  a  GFS2  filesystem,  you  are
       requesting  that  any spare space between the current end of the filesystem and the end of
       the device is filled with a  newly  initialized  GFS2  filesystem  extension.   When  this
       operation  is complete, the resource group index for the filesystem is updated so that all
       nodes in the cluster can use the extra storage space that has been added.

       You may only run gfs2_grow on a mounted filesystem; expansion of unmounted filesystems  is
       not  supported.  You only need to run gfs2_grow on one node in the cluster.  All the other
       nodes will see the expansion has  occurred  and  automatically  start  to  use  the  newly
       available space.

       You  must be superuser to execute gfs2_grow.  The gfs2_grow tool tries to prevent you from
       corrupting your filesystem by checking as many of the likely problems  as  it  can.   When
       expanding  a  filesystem,  only  the  last step of updating the resource index affects the
       currently mounted filesystem and so failure part way through the expansion process  should
       leave your filesystem in its original unexpanded state.

       You  can run gfs2_grow with the -T flag to get a display of the current state of a mounted
       GFS2 filesystem.

       The gfs2_grow tool uses the resource group (RG) size that was originally  calculated  when
       mkfs.gfs2  was  done.   This allows tools like fsck.gfs2 to better ensure the integrity of
       the file system.  Since the new free space often does not lie on even boundaries based  on
       that RG size, there may be some unused space on the device after gfs2_grow is run.

OPTIONS

       -D     Print out debugging information about the filesystem layout.

       -h     Prints out a short usage message and exits.

       -q     Be quiet.  Don't print anything.

       -T     Test.  Do all calculations, but do not write any data to the disk and do not expand
              the filesystem. This is used to discover what the tool would have done were it  run
              without this flag.

       -V     Version. Print out version information, then exit.

BUGS

       There is no way to shrink a GFS2 filesystem.

SEE ALSO

       mkfs.gfs2(8) gfs2_jadd(8)

                                                                                     gfs2_grow(8)