148 lines
4.5 KiB
Groff
148 lines
4.5 KiB
Groff
.\" $OpenBSD: growfs.8,v 1.16 2017/10/17 22:47:58 schwarze Exp $
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.\" Copyright (c) 2000 Christoph Herrmann, Thomas-Henning von Kamptz
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.\" Copyright (c) 1980, 1989, 1993 The Regents of the University of California.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" Christoph Herrmann and Thomas-Henning von Kamptz, Munich and Frankfurt.
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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. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgment:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors, as well as Christoph
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.\" Herrmann and Thomas-Henning von Kamptz.
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.\" 4. 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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.\" $TSHeader: src/sbin/growfs/growfs.8,v 1.3 2000/12/12 19:31:00 tomsoft Exp $
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.\" $FreeBSD: src/sbin/growfs/growfs.8,v 1.24 2005/01/18 10:09:34 ru Exp $
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.\"
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.Dd $Mdocdate: October 17 2017 $
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.Dt GROWFS 8
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.Os
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.Sh NAME
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.Nm growfs
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.Nd grow size of an existing ffs file system
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.Sh SYNOPSIS
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.Nm
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.Op Fl Nqy
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.Op Fl s Ar size
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.Ar special
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.Sh DESCRIPTION
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The
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.Nm
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utility extends the
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.Xr newfs 8
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program.
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Before starting
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.Nm growfs ,
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the partition must be set to a larger size using
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.Xr disklabel 8 .
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The
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.Nm
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utility extends the size of the file system on the specified special file.
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.Pp
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Currently
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.Nm
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can only enlarge unmounted file systems.
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Do not try enlarging a mounted file system \- your system may panic and
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you will not be able to use the file system any longer.
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Most of the
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.Xr newfs 8
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options cannot be changed by
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.Nm growfs .
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In fact, you can only increase the size of the file system.
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Use
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.Xr tunefs 8
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for other changes.
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.Pp
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The following options are available:
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.Bl -tag -width "-s sizeXX"
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.It Fl N
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Test mode.
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Causes the new file system parameters to be printed out without actually
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enlarging the file system.
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.It Fl q
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Operate in quiet mode.
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With this option,
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.Nm
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will not print extraneous information like superblock backups.
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.It Fl s Ar size
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Determines the
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.Ar size
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of the file system after enlarging in sectors.
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This value defaults to the size of the raw partition specified in
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.Ar special
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(in other words,
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.Nm
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will enlarge the file system to the size of the entire partition).
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.It Fl y
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Expert mode.
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Usually
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.Nm
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will ask you if you have taken a backup of your data and will test
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whether
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.Ar special
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is currently mounted.
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The
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.Fl y
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flag suppresses this,
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so use this option with great care!
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.El
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.Sh ENVIRONMENT
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.Bl -tag -width COLUMNS
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.It Ev COLUMNS
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If set to a positive integer,
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output is formatted to the given width in columns.
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Otherwise,
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.Nm
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defaults to the terminal width, or 80 columns if the output is not a terminal.
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.El
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.Sh SEE ALSO
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.Xr disklabel 8 ,
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.Xr dumpfs 8 ,
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.Xr fdisk 8 ,
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.Xr fsck 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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utility first appeared in
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.Fx 4.4
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and has been available since
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.Ox 3.4 .
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.Sh AUTHORS
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.An Christoph Herrmann Aq Mt chm@FreeBSD.org
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.An Thomas-Henning von Kamptz Aq Mt tomsoft@FreeBSD.org
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.br
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and the
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.Nm
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team
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.Aq Mt growfs@tomsoft.com
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.Sh BUGS
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Filesystems must be checked with
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.Xr fsck 8
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after enlarging.
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