NAME

       gfs2_jadd - Add journals to a gfs2 filesystem

SYNOPSIS

       gfs2_jadd [options] <device|mountpoint> ...

DESCRIPTION

       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 will see the
       newly created journals in addition to the existing journals. Machines which are already  running  in  the
       cluster are unaffected.

       gfs2_jadd must be run on a mounted filesystem. Adding journals to unmounted filesystems is not supported.
       gfs2_jadd  need  only  be  run  on one node in the cluster; the added journals will be visible across the
       cluster.

       gfs2_jadd must be run as root. gfs2_jadd only updates the journal index at the end of the process  if  no
       error conditions are encountered, otherwise the filesystem is left in its original state.

OPTIONS

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

       -D     Print out debugging 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 journals of different sizes are required, gfs2_jadd will need to be run once for each different
              size of journal.

       -j number
              The number of new journals to add.

       -q     Be quiet.  Don't print anything.

       -V     Version. Print version information, then exit.

NOTES

       The  journals  added  by  gfs2_jadd  are  not  guaranteed  to  be  laid out contiguously as they are with
       mkfs.gfs2(8). Therefore it may be beneficial to performance to create the filesystem  with  the  required
       number of journals instead of adding journals later.

SEE ALSO

       mkfs.gfs2(8) gfs2_grow(8)

                                                                                                    gfs2_jadd(8)