DEBUGREISERFS(8) System Manager's Manual DEBUGREISERFS(8)NAME
debugreiserfs
SYNOPSIS
debugreiserfs [ -dDJmoqpS ] [ -j device ] [ -B blocknumber ]
device
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
AUTHOR
This version of debugreiserfs has been written by Hans Reiser <reiser@idiom.com>.
BUGS
There are probably few of them. Please, report bugs to ReiserFS mail-list <reiserfs-list@namesys.com>.
SEE ALSO reiserfsck(8), mkreiserfs(8)Reiserfsprogs 3.6.4 January 2002 DEBUGREISERFS(8)
Check Out this Related Man Page
MKREISERFS(8) System Manager's Manual MKREISERFS(8)NAME
mkreiserfs - The create tool for the Linux ReiserFS filesystem.
SYNOPSIS
mkreiserfs [ -dfV ] [ -b | --block-size N ] [ -h | --hash HASH ] [ -u | --uuid UUID ] [ -l | --label LABEL ] [ --format FORMAT ] [ -q |
--quiet ] [ -j | --journal-device FILE ] [ -s | --journal-size N ] [ -o | --journal-offset N ] [ -t | --transaction-max-size N ] [ -B |
--badblocks file ] device [ filesystem-size ]
DESCRIPTION
mkreiserfs creates a Linux ReiserFS filesystem on a device (usually a disk partition).
device is the special file corresponding to a device or to a partition (e.g /dev/hdXX for an IDE disk partition or /dev/sdXX for a SCSI
disk partition).
filesystem-size
is the size in blocks of the filesystem. If omitted, mkreiserfs will automatically set it.
OPTIONS -b | --block-size N
N is block size in bytes. It may only be set to a power of 2 within the 512-8192 interval.
-h | --hash HASH
HASH specifies which hash function will sort the names in the directories. Choose from r5, rupasov, or tea. r5 is the default one.
--format FORMAT
FORMAT specifies the format for the new filsystem. Choose format 3.5 or 3.6. If none is specified mkreiserfs will create format 3.6
if running kernel is 2.4 or higher, and format 3.5 if kernel 2.2 is running, and will refuse creation under all other kernels.
-u | --uuid UUID
Sets the Universally Unique IDentifier of the filesystem to UUID (see also uuidgen(8)). The format of the UUID is
a series of hex digits separated by hypthens, e.g.: "c1b9d5a2-f162-11cf-9ece-0020afc76f16". If the option is skipped, mkreis-
erfs will by default generate a new UUID.
-l | --label LABEL
Sets the volume label of the filesystem. LABEL can at most be 16 characters long; if it is longer than 16 characters, mkreis-
erfs will truncate it.
-q | --quiet
Sets mkreiserfs to work quietly without producing messages, progress or questions. It is useful, but only for use by end users, if
you run mkreiserfs in a script.
-j | --journal-device FILE
FILE is the name of the block device on which is to be places the filesystem journal.
-o | --journal-offset N
N is the offset where the journal starts when it is to be on a separate device. Default is 0. N has no effect when the journal is to
be on the host device.
-s | --journal-size N
N is the size of the journal in blocks. When the journal is to be on a separate device, its size defaults to the number of blocks
that the device has. When journal is to be on the host device, its size defaults to 8193 and the maximal possible size is 32749
(for blocksize 4k). The minimum size is 513 blocks (whether the journal is on the host or on a separate device).
-t | --transaction-max-size N
N is the maximum transaction size parameter for the journal. The default, and max possible, value is 1024 blocks. It should be less
than half the size of the journal. If specified incorrectly, it will automatically be adjusted.
-B | --badblocks file
File is the file name of the file that contains the list of blocks to be marked as bad on the filesystem. This list can be created
by /sbin/badblocks -b block-size device.
-f Forces mkreiserfs to continue even when the device is the whole disk, looks mounted, or is not a block device. If -f is specified
more than once, it allows the user to avoid asking for confirmation.
-d Sets mkreiserfs to print debugging information during mkreiserfs.
-V Prints the version and then exits.
AUTHOR
This version of mkreiserfs has been written by Edward Shishkin <edward@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), debugreiserfs(8), reiserfstune(8)Reiserfsprogs-3.6.21 January 2009 MKREISERFS(8)