reiserfsck - The checking tool for the ReiserFS filesystem.
] [ --rebuild-sb
| --journal device
] [ -z
] [ -n
] [ -B
] [ -l
| --logfile file
] [ -y
] [ -f
] [ -S
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
- 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
- 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).
- --adjust-size, -z
- 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
- --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
- --logfile file, -l file
- This option causes reiserfsck to report any
corruption it finds to the specified log file rather than to stderr.
- --nolog, -n
- This option prevents reiserfsck from reporting any
kinds of corruption.
- --quiet, -q
- This option prevents reiserfsck from reporting its
rate of progress.
- --yes, -y
- 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
- -a, -p
- 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.
- --force, -f
- Force checking even if the file system seems clean.
- This option prints the reiserfsprogs version and then
- -r This option does nothing at all; it is provided
- backwards compatibility.
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
exits with status 0 it means no errors were
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
, 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.
uses the following exit codes:
- No errors.
- File system errors corrected.
- Reboot is needed.
- File system fatal errors left uncorrected,
needs to be launched.
- File system fixable errors left uncorrected,
needs to be launched.
- Operational error.
- Usage or syntax error.
This version of reiserfsck
has been written by Vitaly Fertman
Please report bugs to the ReiserFS developers <email@example.com>,
providing as much information as possible--your hardware, kernel, patches,
settings, all printed messages, the logfile; check the syslog file for any
Faster recovering, signal handling.
, reiserfstune(8) resize_reiserfs(8)