nilfs-tune - adjust tunable file system parameters on NILFS file system
nilfs-tune [options] device
nilfs-tune is a utility to modify tunable file system parameters on
NILFS2 file system in device.
This command is valid for inactive NILFS2 file systems. Modifying
active mounts may cause severe damage.
-f Force to modify even the specified file system is mounted.
Set the commit interval of segment.
Set the threshold of the data amount of the segment
-l List the contents of the file system superblock, including the
current values of the parameters that can be set via this
Set the volume label of the file system. NILFS2 file system
labels can be at most 80 bytes long. If volume-label is longer
than 80 bytes, nilfs-tune will truncate it. The volume label
can be used mount(8) and /etc/fstab(5) (and possibly others) by
specifying LABEL=volume-label instead of a block special device
name like /dev/sda5.
Set or clear the indicated filesystem features (options) in the
filesystem. More than one filesystem feature can be cleared or
set by separating features with commas. Filesystem features
prefixed with a caret character ('^') will be cleared in the
filesystem's superblock; filesystem features without a prefix
character will be added to the filesystem.
The following filesystem feature can be set or cleared using
Enable block count per checkpoint. After setting this
option, fsck should be run on the filesystem to make the
counts right, but no fsck tool is available yet, sorry.
Set the universally unique identifier (UUID) of the file system
to UUID. The format of the UUID is a series of hex digits
separated by hyphens, like this:
-h Display help message and exit.
Jiro SEKIBA <firstname.lastname@example.org>
nilfs-tune is part of the nilfs-utils package and is available from
nilfs(8), lscp(1), chcp(8), mkcp(8), rmcp(8).