mirror of
https://github.com/nilfs-dev/nilfs-utils.git
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dd2d0df4f4
Update the version number to 2.3 and the date to Jan 2026 in the manual pages for mkfs.nilfs2, mount.nilfs2, nilfs, nilfs_cleanerd, nilfs_cleanerd.conf, nilfs-resize, nilfs-tune, and umount.nilfs2. This synchronizes the version information across all manual pages in preparation for the upcoming release. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
78 lines
2.4 KiB
Groff
78 lines
2.4 KiB
Groff
.\" Copyright (C) 2010 Jiro SEKIBA <jir@unicus.jp>
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.\"
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.TH NILFS-TUNE 8 "Jan 2026" "nilfs-utils version 2.3"
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.SH NAME
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nilfs-tune \- adjust tunable file system parameters on NILFS file system
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.SH SYNOPSIS
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.B nilfs-tune
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[\fIoptions\fP] \fIdevice\fP
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.SH DESCRIPTION
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.B nilfs-tune
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is a utility to modify tunable file system parameters on NILFS2 file
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system in \fIdevice\fP.
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.PP
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This command is valid for inactive NILFS2 file systems.
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Modifying active mounts may cause severe damage.
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.SH OPTIONS
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.TP
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.B \-f
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Force to modify even if the specified file system is mounted.
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.TP
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.B \-i \fIinterval\fP
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Set the commit interval of segment.
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.TP
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.B \-m \fIblock-max\fP
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Set the threshold of the data amount of the segment construction.
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.TP
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.B \-l
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List the contents of the file system superblock, including the current
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values of the parameters that can be set via this program.
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.TP
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.B \-L \fIvolume-label\fP
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Set the volume label of the file system. NILFS2 file system labels
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can be at most 80 bytes long. If volume-label is longer than 80 bytes,
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nilfs-tune will truncate it. The volume label can be used by mount(8) and
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/etc/fstab(5) (and possibly others) by specifying \fBLABEL\fP=volume-label
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instead of a block special device name like /dev/sda5.
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.TP
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.BR \-O " [^]\fIfeature\fR[,...]"
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Set or clear the indicated filesystem features (options) in the filesystem.
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More than one filesystem feature can be cleared or set by separating
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features with commas. Filesystem features prefixed with a
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caret character ('^') will be cleared in the filesystem's superblock;
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filesystem features without a prefix character
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will be added to the filesystem.
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.IP
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The following filesystem feature can be set or cleared using
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.BR nilfs-tune :
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.RS
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.TP
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.B block_count
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Enable block count per checkpoint.
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After setting this option, fsck should be run on the filesystem to
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make the counts right, but no fsck tool is available yet, sorry.
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.RE
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.TP
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.B \-U \fIUUID\fP
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Set the universally unique identifier (UUID) of the file system to UUID.
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The format of the UUID is a series of hex digits separated by hyphens,
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like this: "c1b9d5a2-f162-11cf-9ece-0020afc76f16".
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.TP
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.B \-h
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Display help message and exit.
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.TP
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.B \-V
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Display version and exit.
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.SH AUTHOR
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Jiro SEKIBA <jir@unicus.jp>
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.SH AVAILABILITY
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.B nilfs-tune
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is part of the nilfs-utils package and is available from
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https://nilfs.sourceforge.io.
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.SH SEE ALSO
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.BR nilfs (8),
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.BR lscp (1),
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.BR chcp (8),
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.BR mkcp (8),
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.BR rmcp (8).
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