| debugreiserfs |
| debugreiserfs [ -dDJmoqpS ] [ -j device ] [ -B blocknumber ] |
| device |
| It helps sometimes to solve problems with reiserfs filesystems. Being called w/o 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). |
| -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 metadata with debugreiserfs -p /dev/xxx |gzip -c > xxx.gz. We download that data and make the filesystem 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 use |
| This version of debugreiserfs has been written by Hans Reiser <reiser@idiom.com>. |
| There are probably few of them. Please, report bugs to ReiserFS mail-list <reiserfs-list@namesys.com>. |
| reiserfsck(8), mkreiserfs(8) |