1 .\" Copyright (c) 2000 Christoph Herrmann, Thomas-Henning von Kamptz
2 .\" Copyright (c) 1980, 1989, 1993 The Regents of the University of California.
3 .\" All rights reserved.
5 .\" This code is derived from software contributed to Berkeley by
6 .\" Christoph Herrmann and Thomas-Henning von Kamptz, Munich and Frankfurt.
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9 .\" modification, are permitted provided that the following conditions
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18 .\" This product includes software developed by the University of
19 .\" California, Berkeley and its contributors, as well as Christoph
20 .\" Herrmann and Thomas-Henning von Kamptz.
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37 .\" $TSHeader: src/sbin/growfs/growfs.8,v 1.3 2000/12/12 19:31:00 tomsoft Exp $
45 .Nd expand an existing UFS file system
50 .Ar special | filesystem
54 utility makes it possible to expand an UFS file system.
57 the partition or slice containing the file system must be extended using
59 If you are using volumes you must enlarge them by using
63 utility extends the size of the file system on the specified special file.
64 The following options are available:
65 .Bl -tag -width indent
68 Causes the new file system parameters to be printed out without actually
69 enlarging the file system.
74 will ask you if you took a backup of your data before and will do some tests
77 is currently mounted or whether there are any active snapshots on the file
79 This will be suppressed.
80 So use this option with great care!
84 of the file system after enlarging in sectors.
86 is the number of 512 byte sectors unless suffixed with a
91 denotes byte, kilobyte, megabyte, gigabyte and terabyte respectively.
92 This value defaults to the size of the raw partition specified in
96 will enlarge the file system to the size of the entire partition).
99 Expand root file system to fill up available space:
104 partition to 2GB and expand the file system:
105 .Dl gpart resize -i 1 -s 2G ada0
106 .Dl growfs -s 2G /dev/ada0p1
118 utility first appeared in
120 The ability to resize mounted file systems was added in
123 .An Christoph Herrmann Aq chm@FreeBSD.org
124 .An Thomas-Henning von Kamptz Aq tomsoft@FreeBSD.org
125 .An The GROWFS team Aq growfs@Tomsoft.COM
126 .An Edward Tomasz Napierala Aq trasz@FreeBSD.org
128 When expanding a file system mounted read-write, any writes to that file system
129 will be temporarily suspended until the expansion is finished.
133 writes cylinder group summary to disk and reads it again later for doing more
135 This read operation will provide unexpected data when using
137 Therefore, this part cannot really be simulated and will be skipped in test