mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-29 12:03:03 +00:00
9d384d4d3d
recreating the filesystem, check for and output the -i, -k, and -l options if appropriate. Note the remaining deficiencies of the -m option in the dumpfs(8) manual page. Specifically that newfs(8) options -E, -R, -S, and -T options are not handled and that -p is not useful so is omitted. Also document that newfs(8) options -n and -r are neither checked for nor output but should be. The -r flag is needed if the filesystem uses gjournal(8). PR: bin/163992 Reported by: Dieter <freebsd@sopwith.solgatos.com> Submitted by: Andy Kosela <akosela@andykosela.com> MFC after: 1 week
112 lines
3.3 KiB
Groff
112 lines
3.3 KiB
Groff
.\" Copyright (c) 1983, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)dumpfs.8 8.1 (Berkeley) 6/5/93
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd May 16, 2013
|
|
.Dt DUMPFS 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm dumpfs
|
|
.Nd dump UFS file system information
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl f
|
|
.Op Fl l
|
|
.Op Fl m
|
|
.Ar filesys | device
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
utility prints out the UFS super block and cylinder group information
|
|
for the file system or special device specified, unless the
|
|
.Fl f ,
|
|
.Fl l
|
|
or
|
|
.Fl m
|
|
flag is specified.
|
|
The listing is very long and detailed.
|
|
This
|
|
command is useful mostly for finding out certain file system
|
|
information such as the file system block size and minimum
|
|
free space percentage.
|
|
.Pp
|
|
If
|
|
.Fl f
|
|
is specified, a sorted list of all free fragments and free fragment ranges,
|
|
as represented in cylinder group block free lists, is printed.
|
|
If the flag is specified twice, contiguous free fragments are not collapsed
|
|
into ranges and instead printed in a simple list.
|
|
Fragment numbers may be converted to raw byte offsets by multiplying by the
|
|
fragment size, which may be useful when recovering deleted data.
|
|
.Pp
|
|
If
|
|
.Fl l
|
|
is specified, the pathname to the file system's container derived from
|
|
its unique identifier is printed.
|
|
.Pp
|
|
If
|
|
.Fl m
|
|
is specified, a
|
|
.Xr newfs 8
|
|
command is printed that can be used to generate a new file system
|
|
with equivalent settings.
|
|
Please note that
|
|
.Xr newfs 8
|
|
options
|
|
.Fl E ,
|
|
.Fl R ,
|
|
.Fl S ,
|
|
and
|
|
.Fl T
|
|
are not handled and
|
|
.Fl p
|
|
is not useful in this case so is omitted.
|
|
.Xr Newfs 8
|
|
options
|
|
.Fl n
|
|
and
|
|
.Fl r
|
|
are neither checked for nor output but should be.
|
|
The
|
|
.Fl r
|
|
flag is needed if the filesystem uses
|
|
.Xr gjournal 8 .
|
|
.Sh SEE ALSO
|
|
.Xr disktab 5 ,
|
|
.Xr fs 5 ,
|
|
.Xr disklabel 8 ,
|
|
.Xr fsck 8 ,
|
|
.Xr newfs 8 ,
|
|
.Xr tunefs 8
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
utility appeared in
|
|
.Bx 4.2 .
|