NILFS_CLEANERD

Section: Maintenance Commands (8)
Updated: Apr 2014
 

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 http://nilfs.sourceforge.net.  

SEE ALSO

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

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
SIGNALS
FILES
AUTHOR
AVAILABILITY
SEE ALSO