Provided by: reiser4progs_1.0.5-1_i386 bug

NAME

       measurefs.reiser4  -  the  program  for  measuring  reiser4  filesystem
       parameters (fragmentation, node packing, etc.).

SYNOPSIS

       measurefs.reiser4 [ options ] FILE

DESCRIPTION

       measurefs.reiser4  is  reiser4  filesystem  measure  program.  You  can
       estimate  reiser4 filesystem fragmentation, packingm etc. structures by
       using it.

COMMON OPTIONS

       -V, --version
              prints program version.

       -?, -h, --help
              prints program help.

       -y, --yes
              assumes an answer ’yes’ to all questions.

       -f, --force
              forces measurefs to use whole disk, not block device or  mounted
              partition.

       -c, --cache N
              sets  tree  cache node number to passed value. This affects very
              much behavior of libreiser4. It affects speed, tree  allocation,
              etc.

MEASUREMENT OPTIONS

       -S, --tree-stat
              shows  different  tree statistics (node packing, internal nodes,
              leaves, etc)

       -T, --tree-frag
              measures total tree fragmentation. The result  is  fragmentation
              factor  -  value from 0.00000 (minimal fragmentation) to 1.00000
              (maximal one). Most probably, this factor may affect  sequential
              read performance.

       -D, --data-frag
              measures   average   files   fragmentation.   This  means,  that
              fragmentation of  each  file  in  filesystem  will  be  measured
              separately   and   results  will  be  averaged.  The  result  is
              fragmentation   factor   -   value   from    0.00000    (minimal
              fragmentation) to 1.00000 (maximal one).

              Note,  that for the fresh filesystem (created not very long time
              ago) and even fully filled by data, this value  will  be  pretty
              small.

       -F, --file-frag FILE
              measures  fragmentation  of  the  specified  file. The result is
              fragmentation   factor   -   value   from    0.00000    (minimal
              fragmentation)    to   1.00000   (maximal   one).   Note,   that
              fragmentation of a small file (depends  of  used  tail  policy),
              which  consists  of tail items, is not very reliable value. That
              is because, they is always afoot due to balancing.

              Examples:

              measurefs.reiser4 -F /usr/bin /dev/hda2
              measurefs.reiser4 -F /bin/bash /dev/hda2

       -E, --show-file
              show  file  fragmentation  for  each  file  if  --data-frag   is
              specified.

PLUGIN OPTIONS

       -p, --print-profile
              prints  the  plugin  profile. This is the set of default plugins
              used for all parts of a  filesystem  --  format,  nodes,  files,
              directories,  hashes,  etc.  If  --override  is  specified, then
              prints modified plugins.

       -l, --print-plugins
              prints all plugins libreiser4 know about.

       -o, --override TYPE=PLUGIN, ...
              overrides the default plugin of the type "TYPE"  by  the  plugin
              "PLUGIN" in the plugin profile.

              Examples:

              measurefs.reiser4     -o     nodeptr=nodeptr41,hash=rupasov_hash
              /dev/hda2

REPORTING BUGS

       Report bugs to <umka@namesys.com>, <reiserfs-list@namesys.com>

SUPPORT

       You can get support at http://www.namesys.com/support.html

SEE ALSO

       libreiser4(8),  debugfs.reiser4(8),  mkfs.reiser4(8),   fsck.reiser4(8)
       cpfs.reiser4(8) resizefs.reiser4(8)

AUTHOR

       This manual page was written by Yury Umanets <umka@namesys.com>