nilfs_cleanerd

NILFS_CLEANERD(8) System Manager's Manual 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 inconsistencies 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 configuration 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_cleanerd.conf(5) for details.

AUTHOR

   Koji Sato

AVAILABILITY

   nilfs_cleanerd is part of the nilfs-utils package and available from https://nilfs.sourceforge.io.