Aliases: debugfs.reiserfs(8), debugfs.reiserfs(8), debugfs.reiserfs(8)
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 partition).|
|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).|
|takes the list of bad blocks stored in the internal ReiserFS tree and translates it into an ascii list written to the specified file.|
|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 <vitaly>.
Please report bugs to the ReiserFS developers <reiserfs-devel>, providing as much information as possible--your hardware, kernel, patches, settings, all printed messages; check the syslog file for any related information.