Manpages - nilfs_cleanerd.8

nilfs_cleanerd - NILFS2 garbage collector

nilfs_cleanerd [*-hV*]

nilfs_cleanerd [/options/] device [/directory/]

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.

-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.

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.

/etc/nilfs_cleanerd.conf

Configuration file for nilfs_cleanerd. See *nilfs_cleanerd.conf*(5) for details.

Koji Sato

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

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