debugreiserfs [ -dDJmoqpuSV ] [ -j device ] [ -B file ] [ -1 N ]
debugreiserfs sometimes helps to solve problems with reiserfs filesys-
tems. When run without options it prints the super block of the Reis-
erFS 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 parti-
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 filesys-
-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 speci-
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 com-
nel.org>, providing as much information as possible--your hardware,
kernel, patches, settings, all printed messages; check the syslog file
for any related information.
Reiserfsprogs 3.6.24 January 2009 DEBUGREISERFS(8)
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