gfs2_jadd(8) System Manager's Manual gfs2_jadd(8)NAME
gfs2_jadd - Add journals to a GFS2 filesystem
SYNOPSIS
gfs2_jadd [OPTION]... <DEVICE|MOINTPOINT>...
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 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 unaffected.
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.
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 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.
-V Version. Print version information, then exit.
SEE ALSO mkfs.gfs2(8)gfs2_grow(8)gfs2_jadd(8)
Check Out this Related Man Page
gfs2_convert(8) System Manager's Manual gfs2_convert(8)NAME
gfs2_convert - Convert a GFS1 filesystem to GFS2
SYNOPSIS
gfs2_convert [OPTION]... DEVICE
DESCRIPTION
gfs2_convert is used to convert a filesystem from GFS1 to GFS2. Do not attempt to convert a GFS1 filesystem which is not clean - the
process of conversion will reinitialise the journals. We highly recommend that fsck.gfs is run successfully before attempting to convert a
filesystem. Many of the on-disk structures are identical between GFS1 and GFS2, so the conversion process updates the journals, a few items
of incompatible metadata (mostly indirect pointers and inodes) and adds the per-node directories required by the gfs2meta filesystem. The
conversion process is performed in-place and does not require any extra disk space so that it is possible to successfully convert a GFS1
filesystem that is completely full.
Always ensure you have a complete backup of the data on any filesystem before starting the conversion process.
OPTIONS -h Help.
This prints out the proper command line usage syntax.
-q Quiet. Print less information while running.
-n No to all questions.
-V Print program Version information only.
Print out the current version name.
-v Verbose operation.
Print more information while running.
-y Yes to all questions.
By specifying this option, gfs2_convert will not prompt before making changes.
EXAMPLE
gfs2_convert /dev/vg0/lvol0
This will convert the Global File System on the block device "/dev/vg0/lvol0" to gfs2 format.
gfs2_convert(8)
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