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 disk
- 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
- --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 option.
- --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
- --quiet, -q
- This option prevents reiserfsck from reporting its rate of
- --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 option.
- -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 exit.
- -r This option does nothing at all; it is provided only for
- 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 related information.
Faster recovering, signal handling.
, reiserfstune(8) resize_reiserfs(8)