| Linux / Unix Command: reiserfsck |
NAME
reiserfsck - check a Linux Reiserfs file systemSYNOPSIS
reiserfsck [ -afprVy ] [ --check | --fix-fixable | --rebuild-sb | --rebuild-tree | --clean-attributes ] [ -j | --journal-device device ] [ --no-journal-available ] [ -z | --adjust-file-size ] [ -S | --scan-whole-partition ] [ -l | --logfile filename ] [ -n | --nolog ] [ -q | --quiet ] deviceDESCRIPTION
Reiserfsck searches for a Reiserfs filesystem on a device, replays any necessary transactions, and either checks or repairs the file system.- device
- is the special file corresponding to the device or partition (e.g /dev/hdXX for IDE disk partition or /dev/sdXX for SCSI disk partition).
OPTIONS
- --check
- This default action checks file system consistency and reports but does not repair any corruption that it finds. This option may be used on a read-only file system mount. The --check option exits with status 0 to indicate that no corruption was found. Otherwise, reiserfsck returns 1 to indicate corruption that can be fixed with --fix-fixable and 2 to indicate corruption that requires --rebuild-tree.
- --fix-fixable
- 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.
- --rebuild-sb
- 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.
- --rebuild-tree
- This option rebuilds the entire file system tree using leaf nodes found on the device. Normally you only need this option if the --check option reports "corruption that can be fixed only during --rebuild-tree". You are strongly encouraged to make a backup copy of the whole partition before attempting the --rebuild-tree option.
- --clean-attributes
- This option cleans reserved fields of Stat-Data items.
- --journal-device 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-file-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 --fix-fixable.
- --logfile filename, -l filename
- This option causes reiserfsck to report any corruption it finds to the specified log file rather than 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.
- -a, -p
- These options are usually passed by fsck -A during the automatic checking of /etc/fstab partitions. For compatibility, these options simply cause reiserfsck to print information about the specified file system. No checks are performed. When it is set - reiserfsck assumes that it is called by fsck -A, provides some information about the specified filesystem and exits.
- -V
- This option prints the reiserfsprogs version and exit.
- -r, -p, -y
- These options are ignored.
- -V, -f
- prints version and exits
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.- --no-journal-available
- 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, not only used space on the partition.
EXAMPLE OF USING
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 --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 and we will try to help solve the problem.
SH EXIT CODES
eiserfsck uses the following exit codes:
0 - No errors.
1 - Errors found, esierfsck --fix-fixable needs to be launched.
2 - Errors found, esierfsck --rebuild-tree needs to be launched.
8 - Operational error.
16 - Usage or syntax error.
SEE ALSO
mkreiserfs(8), debugreiserfs(8), reiserfstune(8)
Important: Use the man command (% man) to see how a command is used on your particular computer.
