xfs_logprint(1M)					      xfs_logprint(1M)

NAME    [Toc]    [Back]

     xfs_logprint - print the log of an	XFS filesystem

SYNOPSIS    [Toc]    [Back]

     xfs_logprint [ options ] device-name
     xfs_logprint -f [ options ] filename

DESCRIPTION    [Toc]    [Back]

     xfs_logprint prints the log of an XFS filesystem (see xfs(4)).  The
     device-name argument is the pathname of the partition or logical volume
     containing	the filesystem.	 The contents of the filesystem	remain
     undisturbed.  There are two major modes of	operation in xfs_logprint.

     One mode is better	for filesystem operation debugging.  It	is called the
     transactional view	and is enabled through the -t option.  The
     transactional view	prints only the	portion	of the log that	pertains to
     recovery.	In other words,	it prints out complete transactions between
     the tail and the head.  This view tries to	display	each transaction
     without regard to how they	are split across log records.

     The second	mode starts printing out information from the beginning	of the
     log.  Some	error blocks might print out in	the beginning because the last
     log record	usually	overlaps the oldest log	record.	 A message is printed
     when the physical end of the log is reached and when the logical end of
     the log is	reached.  A log	record view is displayed one record at a time.
     Transactions that span log	records	may not	be decoded fully.

     Common options are:

     -b	  Extract and print buffer information.	 Only used in transactional
	  view.

     -D	  Don't	decode anything; just print data.

     -e	  Exit when an error is	found in the log.  Normally, xfs_logprint
	  tries	to continue and	unwind from bad	logs.  However,	sometimes it
	  just dies in bad ways.  Using	this option prevents core dumps.

     -f	  The log is a file.

     -i	  Extract and print inode information.	Only used in transactional
	  view.

     -q	  Extract and print quota information.	Only used in transactional
	  view.

     -n	  Don't	try and	interpret log data; just interpret log header
	  information.

     -o	  Also print buffer data in hex.  Normally, buffer data	is just
	  decoded, so better information can be	printed.




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xfs_logprint(1M)					      xfs_logprint(1M)



     -s	start-block
	  Override any notion of where to start	printing.

     -t	  Print	out the	transactional view.

SEE ALSO    [Toc]    [Back]

     mkfs_xfs(1M), mount(1M).


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