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.\" $OpenBSD: growfs.8,v 1.3 2003/08/04 16:21:39 fgsch Exp $
.\" Copyright (c) 2000 Christoph Herrmann, Thomas-Henning von Kamptz
.\" Copyright (c) 1980, 1989, 1993 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" This code is derived from software contributed to Berkeley by
.\" Christoph Herrmann and Thomas-Henning von Kamptz, Munich and Frankfurt.
.\"
.\" 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.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgment:
.\" This product includes software developed by the University of
.\" California, Berkeley and its contributors, as well as Christoph
.\" Herrmann and Thomas-Henning von Kamptz.
.\" 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.
.\"
.\" $TSHeader: src/sbin/growfs/growfs.8,v 1.3 2000/12/12 19:31:00 tomsoft Exp $
.\" $FreeBSD: src/sbin/growfs/growfs.8,v 1.18 2002/12/12 17:25:55 ru Exp $
.\"
.Dd September 8, 2000
.Dt GROWFS 8
.Os
.Sh NAME
.Nm growfs
.Nd grow size of an existing ufs file system
.Sh SYNOPSIS
.Nm
.Op Fl Ny
.Op Fl s Ar size
.Ar special
.Sh DESCRIPTION
The
.Nm
utility extends the
.Xr newfs 8
program.
Before starting
.Nm
the disk must be labeled to a bigger size using
.Xr disklabel 8 .
If you wish to grow a file system beyond the boundary of
the slice it resides in, you must re-size the slice using
.Xr fdisk 8
before running
.Nm growfs .
The
.Nm
utility extends the size of the file system on the specified special file.
.Pp
Currently
.Nm
can only enlarge unmounted file systems.
Do not try enlarging a mounted file system \- your system may panic and you will
not be able to use the file system any longer.
Most of the
.Xr newfs 8
options cannot be changed by
.Nm growfs .
In fact, you can only increase the size of the file system.
Use
.Xr tunefs 8
for other changes.
.Pp
The following options are available:
.Bl -tag -width indent
.It Fl N
Test mode.
Causes the new file system parameters to be printed out without actually
enlarging the file system.
.It Fl y
Expert mode.
Usually
.Nm
will ask you if you took a backup of your data before and will do some tests
whether
.Ar special
is currently mounted.
This will be suppressed.
So use this option with great care!
.It Fl s Ar size
Determines the
.Ar size
of the file system after enlarging in sectors.
This value defaults to the size of the raw partition specified in
.Ar special
(in other words,
.Nm
will enlarge the file system to the size of the entire partition).
.El
.Sh SEE ALSO
.Xr disklabel 8 ,
.Xr dumpfs 8 ,
.Xr fdisk 8 ,
.Xr fsck 8 ,
.Xr newfs 8 ,
.Xr tunefs 8
.Sh HISTORY
The
.Nm
utility first appeared in
.Fx 4.4 .
.Sh AUTHORS
.An Christoph Herrmann Aq chm@FreeBSD.org
.An Thomas-Henning von Kamptz Aq tomsoft@FreeBSD.org
.An The GROWFS team Aq growfs@Tomsoft.COM
.Sh BUGS
It is recommended to always use
.Xr fsck 8
after enlarging
.Pq just to be on the safe side .
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