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.
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.
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.
Initial size of each journal’s unlinked tag file
-V Version. Print version information, then exit.