Man Linux: Main Page and Category List

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     Do not hide clean segments.

       -i index
              Skip index segments at start of input.

       -n lines
              List only lines input segments.

       -h     Display help message 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 <koji@osrg.net>

AVAILABILITY

       lssu  is  part  of  the  nilfs-utils  package  and  is  available  from
       http://www.nilfs.org.

SEE ALSO

       nilfs(8), dumpseg(8).