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xfs_logprint(8)		    System Manager's Manual	       xfs_logprint(8)

NAME
       xfs_logprint - print the	log of an XFS filesystem

SYNOPSIS
       xfs_logprint [ options ]	device

DESCRIPTION
       xfs_logprint prints the log of an XFS filesystem	(see xfs(5)).  The de-
       vice argument is	the pathname of	the partition or logical  volume  con-
       taining	the filesystem.	The device can be a regular file if the	-f op-
       tion is used. 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	trans-
       actional	 view  prints only the portion of the log that pertains	to re-
       covery. 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.

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

       -c     Attempt to continue when an error	is detected.

       -C filename
	      Copy  the	log from the filesystem	to the file filename.  The log
	      itself is	not printed.

       -d     Dump the log from	front to end, printing where each  log	record
	      is located on disk.

       -D     Do not 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     Specifies	that the filesystem image to be	processed is stored in
	      a	 regular  file at device (see the mkfs.xfs(8) -d file option).
	      This might happen	if an image copy of a filesystem has been made
	      into an ordinary file with xfs_copy(8).

       -l logdev
	      External log device. Only	for those filesystems which use	an ex-
	      ternal log.

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

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

       -n     Do not try and interpret log data; just interpret	log header in-
	      formation.

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

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

       -t     Print out	the transactional view.

       -v     Print "overwrite"	data.

       -V     Prints the version number	and exits.

SEE ALSO
       mkfs.xfs(8), mount(8).

							       xfs_logprint(8)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO

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