nilfs_cleanerd8

Usage

Overview

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 shut down 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):

SIGHUP

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

SIGINT, SIGTERM

The nilfs_cleanerd will exit cleanly.

SIGUSR1

This lets nilfs_cleanerd dump the state into the system logger.

SIGUSR2

Reserved for future use. This signal is ignored. If the version of nilfs-utils is equal to or older than 2.2.5, this lets nilfs_cleanerd die.

Files

/etc/nilfs_cleanerd.conf

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