growfs

GROWFS(8)               OpenBSD System Manager's Manual              GROWFS(8)

NAME

     growfs - grow size of an existing ffs file system

SYNOPSIS

     growfs [-Nqy] [-s size] special

DESCRIPTION

     The growfs utility extends the newfs(8) program.  Before starting growfs,
     the partition must be set to a larger size using disklabel(8).  The
     growfs utility extends the size of the file system on the specified
     special file.

     Currently growfs 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 newfs(8) options
     cannot be changed by growfs.  In fact, you can only increase the size of
     the file system.  Use tunefs(8) for other changes.

     The following options are available:

     -N         Test mode.  Causes the new file system parameters to be
                printed out without actually enlarging the file system.

     -q         Operate in quiet mode.  With this option, growfs will not
                print extraneous information like superblock backups.

     -s size    Determines the size of the file system after enlarging in
                sectors.  This value defaults to the size of the raw partition
                specified in special (in other words, growfs will enlarge the
                file system to the size of the entire partition).

     -y         Expert mode.  Usually growfs will ask you if you have taken a
                backup of your data and will test whether special is currently
                mounted.  The -y flag suppresses this, so use this option with
                great care!

SEE ALSO

     disklabel(8), dumpfs(8), fdisk(8), fsck(8), newfs(8), tunefs(8)

HISTORY

     The growfs utility first appeared in FreeBSD 4.4.

AUTHORS

     Christoph Herrmann <chm@FreeBSD.org>
     Thomas-Henning von Kamptz <tomsoft@FreeBSD.org>
     The GROWFS team <growfs@Tomsoft.COM>

BUGS

     Filesystems must be checked with fsck(8) after enlarging.

OpenBSD 5.1                    November 28, 2008                   OpenBSD 5.1