NILFS_CLEANERD(8)					     NILFS_CLEANERD(8)

NAME
       nilfs_cleanerd - NILFS2 garbage collector

SYNOPSIS
       nilfs_cleanerd [-hV]

       nilfs_cleanerd [options] device [directory]

DESCRIPTION
       nilfs_cleanerd is a system daemon which reclaims disk space of a NILFS2
       file system found in device.

       The optional directory argument specifies the  mount  point  where  the
       daemon operates.	 It must be an r/w-mount.

       This  program can be invoked either automatically by mount.nilfs2(8) or
       manually by an administrator.  However, users are recommended to invoke
       nilfs_cleanerd  through	mount.nilfs2(8)	 or  mount(8)  and shutdown it
       through umount.nilfs2(8) or umount(8) in order to avoid state inconsis‐
       tencies among administration tools.

       nilfs_cleanerd displays its process ID (pid) to standard output when it
       started.

OPTIONS
       -V, --version
	      Display version and exit.

       -h, --help
	      Display help message and exit.

       -c file, --conf=file
	      Specify configuration file.

       -p interval, --protection-period=interval
	      Override protection period with the specified number of seconds.

SIGNALS
       nilfs_cleanerd reacts to a set of signals.  You may send	 a  signal  to
       nilfs_cleanerd  using  the  PID	shown  by  the	mount  command	(or in
       /etc/mtab):

	      # mount -t nilfs2
	      /dev/sdb1 on /nilfs type nilfs2 (rw,gcpid=PID)
	      # kill -SIGNAL PID

       SIGHUP This lets nilfs_cleanerd perform a re-initialization.  The  con‐
	      figuration  file	(default  is /etc/nilfs_cleanerd.conf) will be
	      reread.

       SIGTERM
	      The nilfs_cleanerd will exit cleanly.

       SIGUSR1, SIGUSR2
	      Reserved for  future  use.   These  let  nilfs_cleanerd  die  at
	      present.

FILES
       /etc/nilfs_cleanerd.conf
	      Configuration   file   for   nilfs_cleanerd.   See  nilfs_clean‐
	      erd.conf(5) for details.

AUTHOR
       Koji Sato

AVAILABILITY
       nilfs_cleanerd is part of the nilfs-utils package  and  available  from
       http://nilfs.sourceforge.net.

SEE ALSO
       nilfs(8), mount.nilfs2(8), umount.nilfs2(8), nilfs_cleanerd.conf(5).

nilfs-utils version 2.2		   Apr 2014		     NILFS_CLEANERD(8)

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