Provided by: reiserfsprogs_3.6.21-1build1_i386 bug

NAME

       debugreiserfs - The debugging tool for the ReiserFS filesystem.

SYNOPSIS

       debugreiserfs [ -dDJmoqpuSV ] [ -j device ] [ -B file ] [ -1 N ]

       device

DESCRIPTION

       debugreiserfs   sometimes   helps   to  solve  problems  with  reiserfs
       filesystems.  When run without options it prints the super block of the
       ReiserFS filesystem found on the device.

       device is  the  special file corresponding to the device (e.g /dev/hdXX
              for  an  IDE  disk  partition  or  /dev/sdXX  for  a  SCSI  disk
              partition).

OPTIONS

       -j device
              prints  the  contents of the journal. The option -p allows it to
              pack the journal with other metadata into the archive.

       -J     prints the journal header.

       -d     prints  the  formatted  nodes  of  the  internal  tree  of   the
              filesystem.

       -D     prints the formatted nodes of all used blocks of the filesystem.

       -m     prints the contents of the bitmap (slightly useful).

       -o     prints the objectid map (slightly useful).

       -B file
              takes  the  list  of  bad blocks stored in the internal ReiserFS
              tree and translates  it  into  an  ascii  list  written  to  the
              specified file.

       -1 blocknumber
              prints the specified block of the filesystem.

       -p     extracts   the   filesystem's  metadata  with  debugreiserfs  -p
              /dev/xxx | gzip -c > xxx.gz. None of your data are packed unless
              a  filesystem  corruption  presents  when the whole block having
              this corruption is packed. You send us the output, and we use it
              to  create  a  filesystem  with the same strucure as yours using
              debugreiserfs -u.  When the data file is  not  too  large,  this
              usually allows us to quickly reproduce and debug the problem.

       -u     builds  the  ReiserFS  filesystem  image with gunzip -c xxx.gz |
              debugreiserfs -u /dev/image of the  previously  packed  metadata
              with  debugreiserfs  -p. The result image is not the same as the
              original filesystem, because mostly only  metadata  were  packed
              with   debugreiserfs   -p,   but  the  filesystem  structure  is
              completely recreated.

       -S     When -S is not specified -p deals with blocks marked used in the
              filesystem  bitmap only. With this option set debugreiserfs will
              work with the entire device.

       -q     When -p is in use, suppress showing the speed of progress.

AUTHOR

       This version of  debugreiserfs  has  been  written  by  Vitaly  Fertman
       <vitaly@namesys.com>.

BUGS

       Please    report   bugs   to   the   ReiserFS   developers   <reiserfs-
       dev@namesys.com>,  providing  as  much  information  as  possible--your
       hardware,  kernel,  patches,  settings, all printed messages; check the
       syslog file for any related information.

SEE ALSO

       reiserfsck(8), mkreiserfs(8)