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nilfs_cleanerd

NAME

nilfs_cleanerd - NILFS2 garbage collector

SYNOPSIS

nilfs_cleanerd [options] device

DESCRIPTION

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

This program can be invoked either automatically by mount.nilfs2(8) or manually by an administrator. However, in order to avoid state inconsistencies among administration tools, it is recommended to invoke nilfs_cleanerd through mount.nilfs2(8) and to shutdown it through umount.nilfs2(8), where these helper programs are usually executed from mount(8) and umount(8) respectively.

OPTIONS

-c

Specify configuration file.

-h

Display help message and exit.

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 <koji@osrg.net>

AVAILABILITY

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

SEE ALSO

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