117 lines
3.0 KiB
Groff
117 lines
3.0 KiB
Groff
.\" $NetBSD: dumpfs.8,v 1.20 2010/02/27 10:49:42 wiz Exp $
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.\"
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.\" Copyright (c) 1983, 1991, 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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.\" @(#)dumpfs.8 8.1 (Berkeley) 6/5/93
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.\"
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.Dd February 27, 2010
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.Dt DUMPFS 8
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.Os
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.Sh NAME
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.Nm dumpfs
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.Nd dump file system information
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.Sh SYNOPSIS
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.Nm
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.Op Fl acFijmsv
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.Ar filesys No \&| Ar device
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.Op Ar ...
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.Sh DESCRIPTION
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.Nm
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prints out detailed information about the specified filesystems.
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.Pp
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Options:
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.Bl -tag -width Ds
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.It Fl a
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Print details from each alternate superblock.
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.It Fl c
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Print details of each cylinder group.
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.It Fl F
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Dump a file system image from a file, not a special device.
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.It Fl i
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Print details of each allocated inode.
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.It Fl j
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Print details of the WAPBL journal.
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.It Fl m
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Print details of the cylinder group summary.
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.It Fl s
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Print details of the superblock.
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.It Fl v
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Be even more verbose.
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.El
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.Pp
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If none of
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.Fl a ,
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.Fl c ,
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.Fl i ,
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.Fl j ,
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.Fl m ,
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or
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.Fl s
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are given, then
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.Nm
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defaults to
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.Fl cmsv .
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.Pp
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.Nm
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is useful mostly for finding out certain file system
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information such as the file system block size, minimum
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free space percentage, and the file system level that
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can be upgraded with the
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.Fl c
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option of
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.Xr fsck_ffs 8 .
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All of this information is output by
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.Nm
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.Fl s .
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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 fsck 8 ,
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.Xr fsck_ffs 8 ,
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.Xr newfs 8 ,
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.Xr tunefs 8
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.Sh HISTORY
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The
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.Nm
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command appeared in
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.Bx 4.2 .
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The
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.Fl a ,
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.Fl c ,
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.Fl i ,
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.Fl m ,
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and
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.Fl s
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options, and the inode dump were added for
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.Nx 2.0 .
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The
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.Fl j ,
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option was added for
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.Nx 6.0 .
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