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debugreiserfs



SYNOPSIS

       debugreiserfs [ -dDJmoqpS ] [ -j device ] [ -B blocknumber
       ]

       device


DESCRIPTION

       It  helps  sometimes  to  solve  problems  with   reiserfs
       filesystems.  Being called without options it prints super
       block of reiserfs filesystem found on the device.

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


OPTIONS

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

       -J     print journal header.

       -d     print formatted nodes of the internal tree  of  the
              filesystem

       -D     print  formatted  nodes  of  all used blocks of the
              filesystem

       -m     print contents of bitmap (not very useful)

       -o     print objectid map (not very useful)

       -1 blocknumber
              print specified block of the filesystem

       -p     Makes debugreiserfs  to  find  filesystem  metadata
              This option exists to help reiserfsck debugging. If
              reiserfsck fails - you may extract filesystem meta­
              data  with  debugreiserfs  -p  /dev/xxx  |gzip -c >
              xxx.gz. We download that data and make the filesys­
              tem  similar to your with gunzip -c xxx.gz | unpack
              /dev/xxx (unpack  is  included  into  reiserfsprogs
              package).  This  usually  allows  to  reproduce and
              debug the problem quickly. When data  file  is  not
              too large.

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

       -q     Suppress  showing  speed  of progress when -p is in

Reiserfsprogs 3.6.9         April 2003           DEBUGREISERFS(8)
  
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