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.
-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).
-y Causes growfs to assume yes as the answer to all operator
questions.
EXIT STATUS
Exit status is 0 on success, and >= 1 on errors. Errors recoverable by
user action are indicated by 2. OS errors, which are usually not
recoverable, are indicated by 3 or greater.
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 <
[email protected]>
Thomas-Henning von Kamptz <
[email protected]>
The GROWFS team <
[email protected]>
Edward Tomasz Napierala <
[email protected]>
CAVEATS
When expanding a file system mounted read-write, any writes to that file
system will be temporarily suspended until the expansion is finished.
BUGS
Normally growfs writes cylinder group summary to disk and reads it again
later for doing more updates. This read operation will provide
unexpected data when using -N. Therefore, this part cannot really be
simulated and will be skipped in test mode.
FreeBSD 14.1-RELEASE-p8 October 3, 2023 FreeBSD 14.1-RELEASE-p8