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FFSINFO(8)		FreeBSD	System Manager's Manual		    FFSINFO(8)

NAME
     ffsinfo --	dump all meta information of an	existing ufs file system

SYNOPSIS
     ffsinfo [-g cylinder_group] [-i inode] [-l	level] [-o outfile] special |
	     file

DESCRIPTION
     The ffsinfo utility extends the dumpfs(8) utility.

     The output	is appended to the file	outfile.  Also expect the output file
     to	be rather large.  Up to	2 percent of the size of the specified file
     system is not uncommon.

     The following options are available:

     -g	cylinder_group
	     This restricts the	dump to	information about this cylinder	group
	     only.  Here 0 means the first cylinder group and -1 the last one.

     -i	inode
	     This restricts the	dump to	information about this particular
	     inode only.  Here the minimum acceptable inode is 2.  If this
	     option is omitted but a cylinder group is defined then only
	     inodes within that	cylinder group are dumped.

     -l	level
	     The level of detail which will be dumped.	This value defaults to
	     255 and is	the ``bitwise or'' of the following table:

	     0x001   initial superblock
	     0x002   superblock	copies in each cylinder	group
	     0x004   cylinder group summary in initial cylinder	group
	     0x008   cylinder group information
	     0x010   inode allocation bitmap
	     0x020   fragment allocation bitmap
	     0x040   cluster maps and summary
	     0x100   inode information
	     0x200   indirect block dump

     -o	outfile
	     This sets the output filename where the dump is written to, and
	     must be specified.	 If - is provided, output will be sent to std-
	     out.

EXAMPLES
	   ffsinfo -o /var/tmp/ffsinfo -l 1023 /dev/vinum/testvol

     will dump /dev/vinum/testvol to /var/tmp/ffsinfo with all available
     information.

SEE ALSO
     disklabel(8), dumpfs(8), fsck(8), growfs(8), gvinum(8), newfs(8),
     tunefs(8)

HISTORY
     The ffsinfo utility first appeared	in FreeBSD 4.4.

AUTHORS
     Christoph Herrmann	<chm@FreeBSD.org>
     Thomas-Henning von	Kamptz <tomsoft@FreeBSD.org>
     The GROWFS	team <growfs@Tomsoft.COM>

BUGS
     Snapshots are handled like	plain files.  They should get their own	level
     to	provide	for independent	control	of the amount of what gets dumped.  It
     probably also makes sense to some extend to dump the snapshot as a	file
     system.

FreeBSD	9.2		       September 8, 2000		   FreeBSD 9.2

NAME | SYNOPSIS | DESCRIPTION | EXAMPLES | SEE ALSO | HISTORY | AUTHORS | BUGS

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