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REISERFSCK
REISERFSCK
NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXPERT OPTIONS
AN EXAMPLE OF USING reiserfsck
EXIT CODES
AUTHOR
BUGS
TODO
SEE ALSO
NAME
|
reiserfsck - The checking tool for the ReiserFS filesystem. |
SYNOPSIS
|
reiserfsck [ -afprVy ] [ --rebuild-sb |
--check | --fix-fixable |
--rebuild-tree | --clean-attributes ] [
-j | --journal device ] [ -z |
--adjust-size ] [ -n | --nolog ] [
-B | --badblocks file ] [ -l |
--logfile file ] [ -q | --quiet
] [ -y | --yes ] [ -S |
--scan-whole-partition ] [
--no-journal-available ] device |
DESCRIPTION
|
Reiserfsck searches for a Reiserfs filesystem on a
device, replays any necessary transactions, and either
checks or repairs the file system. |
|
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). |
OPTIONS
|
This option recovers the superblock on a Reiserfs partition.
Normally you only need this option if mount reports
"read_super_block: can't find a reiserfs file
system" and you are sure that a Reiserfs file system is
there. But remember that if you have used some partition
editor program and now you cannot find a filesystem,
probably something has gone wrong while repartitioning and
the start of the partition has been changed. If so, instead
of rebuilding the super block on a wrong place you should
find the correct start of the partition first. |
|
This default action checks filesystem consistency and
reports, but does not repair any corruption that it finds.
This option may be used on a read-only file system
mount. |
|
This option recovers certain kinds of corruption that do not
require rebuilding the entire file system tree
(--rebuild-tree). Normally you only need this option
if the --check option reports "corruption that
can be fixed with --fix-fixable". This includes:
zeroing invalid data-block pointers, correcting st_size and
st_blocks for directories, and deleting invalid directory
entries. |
|
This option rebuilds the entire filesystem tree using leaf
nodes found on the device. Normally you only need this
option if the reiserfsck --check reports
"Running with --rebuild-tree is required".
You are strongly encouraged to make a backup copy of the
whole partition before attempting the --rebuild-tree
option. Once reiserfsck --rebuild-tree is started it
must finish its work (and you should not interrupt it),
otherwise the filesystem will be left in the unmountable
state to avoid subsequent data corruptions. |
|
This option cleans reserved fields of Stat-Data items. There
were days when there were no extended attributes in
reiserfs. When they were implemented old partitions needed
to be cleaned first -- reiserfs code in the kernel did not
care about not used fields in its strutures. Thus if you
have used one of the old (pre-attrbutes) kernels with a
ReiserFS filesystem and you want to use extented attribues
there, you should clean the filesystem first. |
|
--journal device , -j
device |
|
This option supplies the device name of the current file
system journal. This option is required when the journal
resides on a separate device from the main data device
(although it can be avoided with the expert option
--no-journal-available). |
|
This option causes reiserfsck to correct file sizes
that are larger than the offset of the last discovered byte.
This implies that holes at the end of a file will be
removed. File sizes that are smaller than the offset of the
last discovered byte are corrected by
--fix-fixable. |
|
--badblocks file, -B
file |
|
This option sets the badblock list to be the list of blocks
specified in the given `file`. The filesystem badblock list
is cleared before the new list is added. It can be used with
--fix-fixable to fix the list of badblocks (see
debugreiserfs -B). If the device has bad blocks,
every time it must be given with the --rebuild-tree
option. |
|
This option causes reiserfsck to report any
corruption it finds to the specified log file rather than to
stderr. |
|
This option prevents reiserfsck from reporting any
kinds of corruption. |
|
This option prevents reiserfsck from reporting its
rate of progress. |
|
This option inhibits reiserfsck from asking you for
confirmation after telling you what it is going to do. It
will assuem you confirm. For safety, it does not work with
the --rebuild-tree option. |
|
These options are usually passed by fsck -A during the
automatic checking of those partitions listed in /etc/fstab.
These options cause reiserfsck to print some
information about the specified filesystem, to check if
error flags in the superblock are set and to do some
light-weight checks. If these checks reveal a corruption or
the flag indicating a (possibly fixable) corruption is found
set in the superblock, then reiserfsck switches to
the fix-fixable mode. If the flag indicating a fatal
corruption is found set in the superblock, then
reiserfsck finishes with an error. |
|
This option prints the reiserfsprogs version and then
exit. |
|
These options are not yet operational and therefore are
ignored. |
EXPERT OPTIONS
|
DO NOT USE THESE OPTIONS UNLESS YOU KNOW WHAT YOU ARE DOING.
WE ARE NOT RESPONSIBLE IF YOU LOSE DATA AS A RESULT OF THESE
OPTIONS. |
|
This option allows reiserfsck to proceed when the
journal device is not available. This option has no effect
when the journal is located on the main data device. NOTE:
after this operation you must use reiserfstune to
specify a new journal device. |
|
--scan-whole-partition, -S |
|
This option causes --rebuild-tree to scan the whole
partition but not only the used space on the
partition. |
AN EXAMPLE OF USING reiserfsck
|
1. You think something may be wrong with a reiserfs
partition on /dev/hda1 or you would just like to perform a
periodic disk check. |
|
2. Run reiserfsck --check --logfile check.log
/dev/hda1. If reiserfsck --check exits with
status 0 it means no errors were discovered. |
|
3. If reiserfsck --check exits with status 1 (and
reports about fixable corruptions) it means that you should
run reiserfsck --fix-fixable --logfile fixable.log
/dev/hda1. |
|
4. If reiserfsck --check exits with status 2 (and
reports about fatal corruptions) it means that you need to
run reiserfsck --rebuild-tree. If reiserfsck
--check fails in some way you should also run
reiserfsck --rebuild-tree, but we also encourage you
to submit this as a bug report. |
|
5. Before running reiserfsck --rebuild-tree, please
make a backup of the whole partition before proceeding. Then
run reiserfsck --rebuild-tree --logfile rebuild.log
/dev/hda1. |
|
6. If the reiserfsck --rebuild-tree step fails or
does not recover what you expected, please submit this as a
bug report. Try to provide as much information as possible
including your platform and Linux kernel version. We will
try to help solve the problem. |
EXIT CODES
|
reiserfsck uses the following exit codes:
0 - No errors.
1 - File system errors corrected.
2 - Reboot is needed.
4 - File system fatal errors left uncorrected,
reiserfsck --rebuild-tree needs to be launched.
6 - File system fixable errors left uncorrected,
reiserfsck --fix-fixable needs to be launched.
8 - Operational error.
16 - Usage or syntax error. |
AUTHOR
|
This version of reiserfsck 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, the logfile; check the
syslog file for any related information. |
TODO
|
Faster recovering, signal handling. |
SEE ALSO
|
mkreiserfs(8), reiserfstune(8)
resize_reiserfs(8),
debugreiserfs(8), |
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