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GROWFS(8) FreeBSD System Manager's Manual GROWFS(8)
NAME
growfs - expand an existing UFS file system
SYNOPSIS
growfs [-Ny] [-s size] special | filesystem
DESCRIPTION
The growfs utility makes it possible to expand an UFS file system.
Before running growfs the partition or slice containing the file system
must be extended using gpart(8). If you are using volumes you must
enlarge them by using gvinum(8). The growfs utility extends the size of
the file system on the specified special file. The following options are
available:
-N "Test mode". Causes the new file system parameters to be printed
out without actually enlarging the file system.
-y Causes growfs to assume yes as the answer to all operator
questions.
-s size
Determines the size of the file system after enlarging in
sectors. Size is the number of 512 byte sectors unless suffixed
with a b, k, m, g, or t which denotes byte, kilobyte, megabyte,
gigabyte and terabyte respectively. 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).
EXAMPLES
Expand root file system to fill up available space:
growfs /
Refresh the LUN size, resize the partition to use all available capacity,
and expand the filesystem accordingly:
camcontrol reprobe da0
gpart recover da0
gpart resize -i 1 da0
growfs /dev/da0p1
SEE ALSO
growfs(7), camcontrol(8), fsck(8), gpart(8), newfs(8), tunefs(8)
HISTORY
The growfs utility first appeared in FreeBSD 4.4. The ability to resize
mounted file systems was added in FreeBSD 10.0.
AUTHORS
Christoph Herrmann <chm@FreeBSD.org>
Thomas-Henning von Kamptz <tomsoft@FreeBSD.org>
The GROWFS team <growfs@Tomsoft.COM>
Edward Tomasz Napierala <trasz@FreeBSD.org>
CAVEATS
When expanding a file system mounted read-write, any writes to that file
system will be temporarily suspended until the expansion is finished.