117 lines
3.3 KiB
Groff
117 lines
3.3 KiB
Groff
.\" $NetBSD: scan_ffs.8,v 1.6 2005/09/10 23:08:37 wiz Exp $
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.\" OpenBSD: scan_ffs.8,v 1.13 2004/12/14 00:04:21 jmc Exp
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.\"
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.\" Copyright (c) 2005 Juan Romero Pardines
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.\" Copyright (c) 1997 Niklas Hallqvist, Tobias Weingartner
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd September 10, 2005
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.Dt SCAN_FFS 8
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.Os
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.Sh NAME
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.Nm scan_ffs ,
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.Nm scan_lfs
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.Nd find FFSv1/FFSv2/LFS partitions on a disk
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.Sh SYNOPSIS
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.Nm
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.Op Fl lv
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.Op Fl e Ar end
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.Op Fl s Ar start
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.Ar device
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.Sh DESCRIPTION
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.Nm
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will take a raw disk device that covers the whole disk and will find
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all possible FFSv[12]/LFS partitions, independent of block sizes, on
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the disk.
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It will show the file system type (FFSv1, FFSv2, or LFS), size, and
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offset.
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Also it has an option to show the values with a disklabel-alike
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output.
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.Pp
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The options are as follows:
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.Bl -tag -width XXsXstartXX
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.It Fl e Ar end
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Where to stop searching for file systems.
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The
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.Ar end
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argument specifies the last sector that will be searched.
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Default is the last sector of
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.Ar device .
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.It Fl l
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Print out a string looking much like the input to disklabel.
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With a little massaging, this output can usually be used by
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.Xr disklabel 8 .
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.It Fl s Ar start
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Where to start searching for file systems.
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This makes it easier to skip swap
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partitions or other large non-UFS/FFS partitions.
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The
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.Ar start
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argument specifies the first sector that will be searched.
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Default is the first sector of
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.Ar device .
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.It Fl v
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Be verbose about what
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.Nm
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is doing, and what has been found.
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.El
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.Pp
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The
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.Ar device
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argument specifies which device
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.Nm
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should scan for file systems.
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.Pp
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.Nm scan_lfs
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is just another name for the same program, both behave in exactly
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the same way.
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.Sh SEE ALSO
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.Xr disklabel 8
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.Sh HISTORY
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The
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.Nm
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program first appeared in
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.Ox 2.3
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and then in
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.Nx 4.0 .
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.Sh AUTHORS
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.An -nosplit
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.Nm
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was written for
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.Ox
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by
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.An Niklas Hallqvist
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and
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.An Tobias Weingartner .
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It was ported to
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.Nx
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by
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.An Juan Romero Pardines ,
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who also added LFS and FFSv2 support.
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.Sh BUGS
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Currently
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.Nm
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won't find FFSv1 partitions with fragsize/blocksize greater than
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2048/16384, and FFSv2 partitions with fragsize/blocksize greater
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than 8192/65536.
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