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       debugreiserfs - The debugging tool for the ReiserFS filesystem.


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



       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


       -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

       -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.


       This  version  of  debugreiserfs  has  been  written  by Vitaly Fertman


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


       reiserfsck(8), mkreiserfs(8)