| Linux / Unix Command: debugreiserfs |
NAME
debugreiserfsSYNOPSIS
debugreiserfs [ -dDJmoqpS ] [ -j device ] [ -B blocknumber ]DESCRIPTION
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).
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 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
SEE ALSO
reiserfsck(8), mkreiserfs(8)
Important: Use the man command (% man) to see how a command is used on your particular computer.
