jfs_fsck

<html> <head> <title>jfs_fsck</title> <META NAME="KEYWORDS" CONTENT="jfs_fsck"> </head> <body BGCOLOR="#ffffff" LINK="#0000ff" VLINK="#0000ff" ALINK="#0000ff" TEXT="#000000"> <center> <h1>jfs_fsck</h1></center> <PRE> <A HREF="/man8/jfs_fsck">jfs_fsck(8)</A> JFS utility - file system check <A HREF="/man8/jfs_fsck">jfs_fsck(8)</A> NAME jfs_fsck - initiate replay of the JFS transaction log, and check and repair a JFS formatted device SYNOPSIS jfs_fsck [ -afnpvV ] [ -j journal_device ] [ --omit_journal_replay ] [ --replay_journal_only ] device DESCRIPTION jfs_fsck is used to replay the JFS transaction log, check a JFS format- ted device for errors, and fix any errors found. device is the special file name corresponding to the actual device to be checked (e.g. /dev/hdb1). jfs_fsck must be run as root. WARNING jfs_fsck should only be used to check an unmounted file system or a file system that is mounted READ ONLY. Using jfs_fsck to check a file system mounted other than READ ONLY could seriously damage the file system! OPTIONS If no options are selected, the default is -p. -a Autocheck mode - Replay the transaction log. Do not continue fsck processing unless the aggregate state is dirty or the log replay failed. Functionally equivalent to -p. Autocheck mode is typically the default mode used when jfs_fsck is called at boot time. -f Replay the transaction log and force checking even if the file system appears clean. Repair all problems automatically. -j journal_device Specify the journal device. -n Open the file system read only. Do not replay the transaction log. Report errors, but do not repair them. --omit_journal_replay Omit the replay of the transaction log. This option should not be used unless as a last resort (i.e. the log has been severely corrupted and replaying it causes further problems). -p Automatically repair ("preen") the file system. Replay the transaction log. Do not continue fsck processing unless the ag- gregate state is dirty or the log replay failed. Functionally equivalent to -a. --replay_journal_only Only replay the transaction log. Do not continue with a full file system check if the replay fails or if the file system is still dirty even after a journal replay. In general, this op- tion should only be used for debugging purposes as it could leave the file system in an unmountable state. This option can- not be used with -f, -n, or --omit_journal_replay. -v Verbose messaging - print details and debug statements to std- out. -V Print version information and exit (regardless of any other cho- sen options). EXAMPLES Check the 3rd partition on the 2nd hard disk, print extended informa- tion to stdout, replay the transaction log, force complete jfs_fsck checking, and give permission to repair all errors: jfs_fsck -v -f /dev/hdb3 Check the 5th partition on the 1st hard disk, and report, but do not repair, any errors: jfs_fsck -n /dev/hda5 EXIT CODE The exit code returned by jfs_fsck represents one of the following con- ditions: 0 No errors 1 File system errors corrected and/or transaction log replayed successfully 2 File system errors corrected, system should be rebooted if file system was mounted 4 File system errors left uncorrected 8 Operational error 16 Usage or syntax error 128 Shared library error REPORTING BUGS If you find a bug in JFS or jfs_fsck, please report it via the bug tracking system ("Report Bugs" section) of the JFS project web site: http://jfs.sourceforge.net/ Please send as much pertinent information as possible, including the complete output of running jfs_fsck with the -v option on the JFS de- vice. SEE ALSO <A HREF="/man8/fsck">fsck(8)</A>, <A HREF="/man8/jfs_mkfs">jfs_mkfs(8)</A>, <A HREF="/man8/jfs_fscklog">jfs_fscklog(8)</A>, <A HREF="/man8/jfs_tune">jfs_tune(8)</A>, <A HREF="/man8/jfs_logdump">jfs_logdump(8)</A>, <A HREF="/man8/jfs_debugfs">jfs_debugfs(8)</A> AUTHORS Barry Arndt (barndt@us.ibm.com) William Braswell, Jr. jfs_fsck is maintained by IBM. See the JFS project web site for more details: http://jfs.sourceforge.net/ October 29, 2002 <A HREF="/man8/jfs_fsck">jfs_fsck(8)</A></PRE> <center> <h6>Man Pages Copyright Respective Owners. Site Copyright (C) 1994 - 2025 <a href="http://www.he.net">Hurricane Electric</a>. All Rights Reserved.</h6></center> </body> </html>

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jfs_fsck