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2gfs2_jadd(8)                System Manager's Manual               gfs2_jadd(8)
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NAME

7       gfs2_jadd - Add journals to a GFS2 filesystem
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SYNOPSIS

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

15       gfs2_jadd is used to add journals (and a few other per-node files) to a
16       GFS2 filesystem.  When this operation is complete, the journal index is
17       updated  so  that machines mounting the filesystem at a later date will
18       see the newly created journals in  addition  to  the  journals  already
19       there.  Machines  which  are  already  running in the cluster are unaf‐
20       fected.
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22       You may only run gfs2_jadd on a mounted filesystem, addition  of  jour‐
23       nals  to  unmounted filesystems is not supported.  You only need to run
24       gfs2_jadd on one node in the cluster. All the other nodes will see  the
25       expansion has occurred when required.
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27       You must be superuser to execute gfs2_jadd. The gfs2_jadd tool tries to
28       prevent you from corrupting your filesystem by checking as many of  the
29       likely  problems  as  it  can. When growing a filesystem, only the last
30       step of updating  the  journal  index  affects  the  currently  mounted
31       filesystem and so failure part way through the expansion process should
32       leave your filesystem in its original state.
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34       You can run gfs2_jadd with the -T flag to get a display of the  current
35       state of a mounted GFS2 filesystem.
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OPTIONS

39       -c MegaBytes
40              Initial size of each journal's quota change file
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42       -D     Print out debbugging information about the filesystem layout.
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44       -h     Prints out a short usage message and exits.
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46       -J size
47              The  size of the new journals in megabytes. The defaults to 32MB
48              (the minimum size allowed is 8MB). If you want to  add  journals
49              of  different  sizes  to  the  filesystem,  you'll  need  to run
50              gfs2_jadd once for each different size of journal.
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52       -j num The number of new journals to add.
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54       -q     Be quiet.  Don't print anything.
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56       -T     Test. Do all calculations, but do not write any data to the disk
57              and  do not add journals. This is used to discover what the tool
58              would have done were it run without this flag.
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60       -u MegaBytes
61              Initial size of each journal's unlinked tag file
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63       -V     Version. Print version information, then exit.
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SEE ALSO

66       gfs2_mkfs(8) gfs2_grow(8)
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