NAME¶
lssu - list usage state of NILFS2 segments
SYNOPSIS¶
lssu [
options] [
device]
DESCRIPTION¶
lssu is a utility for displaying usage state of NILFS2 segments in
device, where a segment is contiguous lump of disk blocks and an
allocation unit of NILFS2 disk space. When
device is omitted,
/proc/mounts is examined to find a NILFS2 file system.
This command will fail if the
device has no active mounts of a NILFS2
file system.
OPTIONS¶
- -a, --all
- Do not hide clean segments.
- -h, --help
- Display help message and exit.
- -i index, --index=index
- Skip index segments at start of input.
- -n lines, --lines=lines
- List only lines input segments.
- -V, --version
- Display version and exit.
FIELD DESCRIPTION¶
Every line of the
lssu output consists of the following fields:
- SEGNUM
- Segment number.
- DATE
- Creation date.
- TIME
- Creation time.
- STAT
- State of the segment. It consists of three flags whose
meaning is shown below:
- a
- The segment is active, meaning that it is recently created
and cannot be reclaimed by the garbage collector.
- d
- The segment is dirty, meaning that it is in use.
- e
- The segment is erroneous, meaning that it has once caused
an I/O error. NILFS2 avoids allocating the segments with this flag.
- NBLOCKS
- Number of in-use blocks of the segment.
AUTHOR¶
Koji Sato
AVAILABILITY¶
lssu is part of the nilfs-utils package and is available from
http://www.nilfs.org.
SEE ALSO¶
nilfs(8),
dumpseg(8).