88 lines
3.1 KiB
Groff
88 lines
3.1 KiB
Groff
.\" $NetBSD: dumplfs.8,v 1.11 2003/08/07 11:25:20 agc Exp $
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.\"
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.\" Copyright (c) 1993
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.\" The Regents of the University of California. 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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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)dumplfs.8 8.1 (Berkeley) 6/18/93
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.\"
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.Dd June 13, 2000
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.Dt DUMPLFS 8
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.Os
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.Sh NAME
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.Nm dumplfs
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.Nd dump file system information
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.Sh SYNOPSIS
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.Nm dumplfs
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.Op Fl adiS
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.Op Fl b Ar blkno
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.Op Fl I Ar blkno
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.Op Fl s Ar segno
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.Ar filesys No \&| Ar device
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.Sh DESCRIPTION
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.Nm
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prints out the file system layout information for the
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LFS file system or special device specified.
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The listing is very long and detailed.
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This command is useful mostly for finding out certain file system
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information such as the file system block size.
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.Pp
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The following flags are interpreted by
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.Nm dumplfs .
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.Bl -tag -width indent
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.It Fl a
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Dump the contents of all superblocks, not just the first. Superblocks
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appear in the dumplfs output with the segment containing them.
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.It Fl b
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Use the block specified immediately after the flag as the super block for the
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filesystem.
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.It Fl d
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Check partial segment data checksums and report mismatches. This makes
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.Nm
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operate much more slowly.
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.It Fl I
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Use the block specified immediately after the flag as the inode block
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containing the index file inode.
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.It Fl i
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Dump information about the inode free list.
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.It Fl S
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Dump information about the segment table.
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.It Fl s
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Add the segment number immediately following the flag to a list of segments to
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dump. This flag may be specified more than once to dump more than one segment.
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The default is to dump all segments.
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.El
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.Sh SEE ALSO
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.Xr disktab 5 ,
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.Xr fs 5 ,
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.Xr disklabel 8 ,
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.Xr newfs_lfs 8
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.Sh HISTORY
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The
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.Nm dumplfs
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command appeared in
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.Bx 4.4 .
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