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Full Discussion: Jfs and jfs2
Operating Systems AIX Jfs and jfs2 Post 302360789 by nagchundu on Saturday 10th of October 2009 10:30:48 AM
Old 10-10-2009
in jfs number of inodes are fixed,in jfs2 dynamically inodes are generated
jfs inode size will be max 128 bytes ,in jfs2 max size is 512 bytes
jfs have only one log file but jfs2 every FS can have own log file
log file is observe the process in file system
 

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logredo(8)						 JFS utility - replay journal log						logredo(8)

NAME
logredo - "replay" a JFS formatted device's journal log SYNOPSIS
logredo device DESCRIPTION
logredo applies all committed transactions recorded in the JFS journal log since the most recent synch point. Its goal is to put the JFS file system in the state it would have been in if all transactions had been applied, in order, by the JFS file system itself. device is the special file name corresponding to the actual device on which the journal log will be replayed (e.g. /dev/hdb1 ). logredo must be run as root. WARNING
logredo is called from within fsck.jfs, and is not recommended to be run as a stand-alone utility unless completely necessary, and only by advanced users with a clear understanding of journaling in a file system. BUGS
If you find a bug in JFS or logredo, please report it via the bug tracking system ("Report Bugs" section) of the JFS project web site: http://oss.software.ibm.com/jfs Please send as much pertinent information as possible, including any logredo error messages and the complete output of running fsck.jfs with the -v option on the JFS device. SEE ALSO
xchklog(8), xchkdmp(8), mkfs.jfs(8), fsck.jfs(8), logdump(8), xpeek(8) AUTHORS
Barry Arndt (barndt@us.ibm.com) William Braswell, Jr. logredo is maintained by IBM. See the JFS project web site for more details: http://oss.software.ibm.com/jfs October 10, 2001 logredo(8)
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