nilfs_cleanerd(8)

1NILFS_CLEANERD(8)           System Manager's Manual          NILFS_CLEANERD(8)
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NAME

6       nilfs_cleanerd - NILFS2 garbage collector
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SYNOPSIS

9       nilfs_cleanerd [options] device [directory]
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DESCRIPTION

12       nilfs_cleanerd is a system daemon which reclaims disk space of a NILFS2
13       file system found in device.
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15       The optional directory argument specifies the  mount  point  where  the
16       daemon operates.  It must be an r/w-mount.
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18       This  program can be invoked either automatically by mount.nilfs2(8) or
19       manually by an administrator.  However, users are recommended to invoke
20       nilfs_cleanerd  through  mount.nilfs2(8)  or  mount(8)  and shutdown it
21       through umount.nilfs2(8) or umount(8) in order to avoid state inconsis‐
22       tencies among administration tools.
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OPTIONS

25       -c     Specify configuration file.
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27       -h     Display help message and exit.
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29       -n     invoke cleanerd without forking process. This option is intended
30              for internal use from mount.nilfs2(8).
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32       -p     Override protection period with the specified number of seconds.
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SIGNALS

35       nilfs_cleanerd reacts to a set of signals.  You may send  a  signal  to
36       nilfs_cleanerd  using  the  PID  shown  by  the  mount  command  (or in
37       /etc/mtab):
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39              # mount -t nilfs2
40              /dev/sdb1 on /nilfs type nilfs2 (rw,gcpid=PID)
41              # kill -SIGNAL PID
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43       SIGHUP This lets nilfs_cleanerd perform a re-initialization.  The  con‐
44              figuration  file  (default  is /etc/nilfs_cleanerd.conf) will be
45              reread.
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47       SIGTERM
48              The nilfs_cleanerd will exit cleanly.
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50       SIGUSR1, SIGUSR2
51              Reserved for  future  use.   These  let  nilfs_cleanerd  die  at
52              present.
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FILES

55       /etc/nilfs_cleanerd.conf
56              Configuration   file   for   nilfs_cleanerd.   See  nilfs_clean‐
57              erd.conf(5) for details.
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AUTHOR

60       Koji Sato <koji@osrg.net>
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AVAILABILITY

63       nilfs_cleanerd is part of the nilfs-utils package  and  available  from
64       http://www.nilfs.org.
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