170 lines
6.8 KiB
Plaintext
170 lines
6.8 KiB
Plaintext
.\" -*- nroff -*-
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.\" Copyright 1996-2002 Hans Reiser.
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.\"
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.TH REISERFSCK 8 "January 2002" "Reiserfsprogs-3.6.4"
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.SH NAME
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reiserfsck \- check a Linux Reiserfs file system
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.SH SYNOPSIS
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.B reiserfsck
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[ \fB-afprVy\fR ]
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[ \fB--check\fR | \fB--fix-fixable\fR | \fB--rebuild-sb\fR
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| \fB--rebuild-tree\fR | \fB--clean-attributes\fR ]
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.\" [ \fB-i\fR | \fB--interactive\fR ]
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[ \fB-j\fR | \fB--journal-device\fR \fIdevice\fR ]
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[ \fB--no-journal-available\fR ]
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[ \fB-z\fR | \fB--adjust-file-size\fR ]
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[ \fB-S\fR | \fB--scan-whole-partition\fR ]
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[ \fB-l\fR | \fB--logfile \fIfilename\fR ]
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[ \fB-n\fR | \fB--nolog\fR ]
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[ \fB-q\fR | \fB--quiet\fR ]
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.\" [ \fB-b\fR | \fB--scan-marked-in-bitmap \fIbitmap-filename\fR ]
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.\" [ \fB-h\fR | \fB--hash \fIhash-name\fR ]
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.\" [ \fB-g\fR | \fB--background\fR ]
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.I device
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.SH DESCRIPTION
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\fBReiserfsck\fR searches for a Reiserfs filesystem on a device, replays
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any necessary transactions, and either checks or repairs the file system.
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.TP
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.I device
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is the special file corresponding to the device or partition (e.g /dev/hdXX
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for IDE disk partition or /dev/sdXX for SCSI disk partition).
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.SH OPTIONS
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.TP
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.B --check
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This default action checks file system consistency and reports but
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does not repair any corruption that it finds. This option may be
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used on a read-only file system mount. The \fB--check\fR option exits
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with status 0 to indicate that no corruption was found. Otherwise,
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\fBreiserfsck\fR returns 1 to indicate corruption that can be fixed with
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\fB--fix-fixable\fR and 2 to indicate corruption that requires
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\fB--rebuild-tree\fR.
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.TP
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.B --fix-fixable
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This option recovers certain kinds of corruption that do not require
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rebuilding the entire file system tree (\fB--rebuild-tree\fR). Normally
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you only need this option if the \fB--check\fR option reports
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"corruption that can be fixed with \fB--fix-fixable\fR". This includes:
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zeroing invalid data-block pointers, correcting st_size and st_blocks
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for directories, and deleting invalid directory entries.
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.TP
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.B --rebuild-sb
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This option recovers the superblock on a Reiserfs partition. Normally you
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only need this option if mount reports "read_super_block: can't find
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a reiserfs file system" and you are sure that a Reiserfs file system is
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there.
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.TP
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.B --rebuild-tree
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This option rebuilds the entire file system tree using leaf nodes found
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on the device. Normally you only need this option if the \fB--check\fR
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option reports "corruption that can be fixed only during \fB--rebuild-tree\fR".
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You are strongly encouraged to make a backup copy of the whole partition
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before attempting the \fB--rebuild-tree\fR option.
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.TP
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.B --clean-attributes
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This option cleans reserved fields of Stat-Data items.
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.TP
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.B \fB--journal-device \fIdevice \fR, \fB-j \fIdevice \fR
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This option supplies the device name of the current file system journal.
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This option is required when the journal resides on a separate device
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from the main data device (although it can be avoided with the expert
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option \fB--no-journal-available\fR).
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.TP
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.\" .B --interactive, -i
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.\" This makes \fBreiserfsck\fR to stop after each pass completed.
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.\" .TP
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.B --adjust-file-size, -z
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This option causes \fBreiserfsck\fR to correct file sizes that
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are larger than the offset of the last discovered byte. This
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implies that holes at the end of a file will be removed. File
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sizes that are smaller than the offset of the last discovered
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byte are corrected by --fix-fixable.
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.TP
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\fB--logfile \fIfilename\fR, \fB-l \fI filename\fR
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This option causes \fBreiserfsck\fR to report any corruption it finds
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to the specified log file rather than stderr.
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.TP
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.B --nolog, -n
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This option prevents \fBreiserfsck\fR from reporting any kinds of corruption.
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.TP
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.B --quiet, -q
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This option prevents \fBreiserfsck\fR from reporting its rate of progress.
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.TP
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\fB-a\fR, \fB-p\fR
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These options are usually passed by fsck -A during the automatic
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checking of /etc/fstab partitions. For compatibility, these options
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simply cause reiserfsck to print information about the specified file
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system. No checks are performed.
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When it is set - \fBreiserfsck\fR assumes that it is called by \fBfsck\fR -A,
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provides some information about the specified filesystem and exits.
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.TP
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.B -V
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This option prints the reiserfsprogs version and exit.
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.TP
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\fB-r\fR, \fB-p\fR, \fB-y\fR
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These options are ignored.
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.TP
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.B -V\fR, \fB-f\fR
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prints version and exits
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.SH EXPERT OPTIONS
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DO NOT USE THESE OPTIONS UNLESS YOU KNOW WHAT YOU ARE DOING.
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WE ARE NOT RESPONSIBLE IF YOU LOSE DATA AS A RESULT OF THESE
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OPTIONS.
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.TP
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.B \fB\--no-journal-available\fR
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This option allows \fBreiserfsck\fR to proceed when the journal device is
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not available. This option has no effect when the journal is located on
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the main data device. NOTE: after this operation you must use \fBreiserfstune\fR
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to specify a new journal device.
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.TP
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.B --scan-whole-partition, -S
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This option causes \fB--rebuild-tree\fR to scan the whole partition, not only
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used space on the partition.
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.SH EXAMPLE OF USING
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1. You think something may be wrong with a reiserfs partition on /dev/hda1
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or you would just like to perform a periodic disk check.
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2. Run \fBreiserfsck --check --logfile check.log /dev/hda1\fR. If \fBreiserfsck
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--check\fR exits with status 0 it means no errors were discovered.
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3. If \fBreiserfsck --check\fR exits with status 1 (and reports about fixable
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corruptions) it means that you should run \fBreiserfsck --fix-fixable --logfile
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fixable.log /dev/hda1\fR.
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4. If \fBreiserfsck --check\fR exits with status 2 (and reports about fatal
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corruptions) it means that you need to run \fBreiserfsck --rebuild-tree\fR.
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If \fBreiserfsck --check\fR fails in some way you should also run \fBreiserfsck
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--rebuild-tree\fR, but we also encourage you to submit this as a bug report.
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5. Before running \fBreiserfsck --rebuild-tree\fR, please make a backup of
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the whole partition before proceeding. Then run \fBreiserfsck --rebuild-tree
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--logfile rebuild.log /dev/hda1\fR.
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6. If the \fB--rebuild-tree\fR step fails or does not recover what you expected,
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please submit this as a bug report. Try to provide as much information as
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possible and we will try to help solve the problem.
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SH EXIT CODES
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\freiserfsck\fR uses the following exit codes:
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.br
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\ 0\ \-\ No errors.
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.br
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\ 1\ \-\ Errors found, \fresierfsck\fR \fB--fix-fixable\fR needs to be launched.
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.br
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\ 2\ \-\ Errors found, \fresierfsck\fR \fB--rebuild-tree\fR needs to be launched.
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.br
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\ 8\ \-\ Operational error.
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.br
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\ 16\ \-\ Usage or syntax error.
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.br
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.SH AUTHOR
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This version of \fBreiserfsck\fR has been written by Vitaly Fertman <vitaly@namesys.com>
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and Vladimir Saveliev <vs@namesys.com>.
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.SH BUGS
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There are likely to be some bugs. Please report bugs to the ReiserFS mail-list
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<reiserfs-list@namesys.com>.
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.SH TODO
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Faster recovering, signal handling, i/o error handling, return reasonable exit codes, etc.
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.SH SEE ALSO
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.BR mkreiserfs (8),
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.BR debugreiserfs (8),
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.BR reiserfstune (8)
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