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GROWFS(8) 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. Be- fore running growfs the partition or slice containing the file system must be extended using gpart(8). The growfs utility extends the size of the file system on the specified special file. The following op- tions 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 sec- tors. 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 de- faults 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 re- coverable, 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 capac- ity, 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 re- size 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 fin- ished. 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 15.0 January 23, 2025 GROWFS(8)
NAME | SYNOPSIS | DESCRIPTION | EXIT STATUS | EXAMPLES | SEE ALSO | HISTORY | AUTHORS | CAVEATS | BUGS
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