09-30-2005
Heh.. dangerous thread here... According to our
rules:
(8) No BSD vs. Linux vs. Windows or similar threads.
and really that is what this will ultimately come down to. Some discussion is possible, but after that we may close the thread.
ext2 is clearly not ready for prime time. Without journalling, a filesystem can't really compete today. ReiserFS offered journalling first and some distros switched to it. Other stuff was large file and volume support. ext3 finally came out and possibly surpassed ReiserFS. Between ReiserFS and ext3 reasonable minds can disagree. Development is continuing on both. Both have supporters who make various claims. Making ReiserFS a default is a way for one Linux distro to distinguish itself all the others. Considering that they all run the Linux kernel with GNU utilities, thats not real easy to do. And you can't flip-flop back and forth without alienating everyone.
Perhaps neither will "win" and ReiserFS/ext3 will join HP-UX/SunOS and Suse/Redhat and all the other muliple choices we have. It seems a little wasteful, but the competition is actually very healthy.
Sun did some benchmarking... see:
this paper (PDF file).
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LEARN ABOUT CENTOS
debugreiserfs
DEBUGREISERFS(8) System Manager's Manual DEBUGREISERFS(8)
NAME
debugreiserfs - The debugging tool for the ReiserFS filesystem.
SYNOPSIS
debugreiserfs [ -dDJmoqpuSV ] [ -j device ] [ -B file ] [ -1 N ]
device
DESCRIPTION
debugreiserfs sometimes helps to solve problems with reiserfs filesystems. 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 partition).
OPTIONS
-j device
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).
-B file
takes the list of bad blocks stored in the internal ReiserFS tree and translates it into an ascii list written to the specified
file.
-1 blocknumber
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 filesys-
tem 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 debu-
greiserfs -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.
AUTHOR
This version of debugreiserfs has been written by Vitaly Fertman <vitaly@namesys.com>.
BUGS
Please report bugs to the ReiserFS developers <reiserfs-dev@namesys.com>, providing as much information as possible--your hardware, kernel,
patches, settings, all printed messages; check the syslog file for any related information.
SEE ALSO
reiserfsck(8), mkreiserfs(8)
Reiserfsprogs 3.6.21 January 2009 DEBUGREISERFS(8)