gfs2_jadd(8)                System Manager's Manual               gfs2_jadd(8)

       gfs2_jadd - Add journals to a GFS2 filesystem

       gfs2_jadd [OPTION]... <DEVICE|MOINTPOINT>...

       gfs2_jadd is used to add journals (and a few other per-node files) to a
       GFS2 filesystem.  When this operation is complete, the journal index is
       updated so that machines mounting the filesystem at a later date will
       see the newly created journals in addition to the journals already
       there. Machines which are already running in the cluster are

       You may only run gfs2_jadd on a mounted filesystem, addition of
       journals to unmounted filesystems is not supported.  You only need to
       run gfs2_jadd on one node in the cluster. All the other nodes will see
       the expansion has occurred when required.

       You must be superuser to execute gfs2_jadd. The gfs2_jadd tool tries to
       prevent you from corrupting your filesystem by checking as many of the
       likely problems as it can. When growing a filesystem, only the last
       step of updating the journal index affects the currently mounted
       filesystem and so failure part way through the expansion process should
       leave your filesystem in its original state.

       You can run gfs2_jadd with the -T flag to get a display of the current
       state of a mounted GFS2 filesystem.

       -c MegaBytes
              Initial size of each journal's quota change file

       -D     Print out debbugging information about the filesystem layout.

       -h     Prints out a short usage message and exits.

       -J size
              The size of the new journals in megabytes. The defaults to 32MB
              (the minimum size allowed is 8MB). If you want to add journals
              of different sizes to the filesystem, you'll need to run
              gfs2_jadd once for each different size of journal.

       -j num The number of new journals to add.

       -q     Be quiet.  Don't print anything.

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

       -u MegaBytes
              Initial size of each journal's unlinked tag file

       -V     Version. Print version information, then exit.

       gfs2_mkfs(8) gfs2_grow(8)