1.\" Copyright (c) 2004-2005 Pawel Jakub Dawidek <pjd@FreeBSD.org> 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.\" 27.Dd September 14, 2018 28.Dt GEOM 8 29.Os 30.Sh NAME 31.Nm geom 32.Nd "universal control utility for GEOM classes" 33.Sh SYNOPSIS 34.Nm 35.Ar class 36.Cm help 37.Nm 38.Ar class 39.Cm list 40.Op Fl a 41.Op Ar name ... 42.Nm 43.Ar class 44.Cm status 45.Op Fl ags 46.Op Ar name ... 47.Nm 48.Ar class 49.Cm load 50.Op Fl v 51.Nm 52.Ar class 53.Cm unload 54.Op Fl v 55.Nm 56.Fl p 57.Ar provider-name 58.Nm 59.Fl t 60.Sh DESCRIPTION 61The 62.Nm 63utility is used to control various GEOM classes. 64A class has to be aware of 65.Xr geom 8 66communication methods, but there are also some standard commands 67which can be used for existing 68.Xr geom 8 69unaware classes. 70Here is the list of standard commands: 71.Bl -tag -width ".Cm status" 72.It Cm help 73List all available commands for the given class. 74.It Cm list 75Print detailed information (within the given class) about all geoms 76(if no additional arguments were specified) or the given geoms. 77This command is only available if the given class exists in the kernel. 78Additional options include: 79.Bl -tag -width ".Fl a" 80.It Fl a 81Print information for geoms without providers. 82.El 83.It Cm status 84Print general information (within the given class) about all geoms 85(if no additional arguments were specified) or the given geoms. 86This command is only available if the given class exists in the kernel. 87.Pp 88Additional options include: 89.Bl -tag -width ".Fl s" 90.It Fl a 91When used with -g, print status for geoms without providers. 92.It Fl g 93Report statuses for geoms instead of providers. 94.It Fl s 95Produce script-friendly output. 96.El 97.It Cm load 98Load the kernel module that implements the given class. 99This command is only available if the class does not yet exist in the kernel and 100the file 101.Pa geom_ Ns Ao Ar class Ac Ns Pa .ko 102can be found in one of the directories specified in 103.Va kern.module_path 104sysctl. 105.It Cm unload 106Unload the kernel module which implements the given class. 107This command is only available if the given class is loaded as a 108kernel module. 109.El 110.Pp 111Additional options include: 112.Bl -tag -width ".Cm status" 113.It Fl p Ar provider-name 114Print detailed information about the geom which provides 115.Ar provider-name . 116.It Fl t 117Display geoms hierarchy as a tree. 118.El 119.Pp 120Class-specific commands are implemented as shared libraries which 121are stored in 122.Pa /lib/geom/ 123directory and are loaded via 124.Xr dlopen 3 125function when the class name is known. 126When a class-specific shared library exists, a direct utility should also be 127available under the name of 128.Nm g Ns Ar class . 129.Pp 130Currently available classes which are aware of 131.Xr geom 8 : 132.Pp 133.Bl -bullet -offset indent -compact 134.It 135CACHE 136.It 137CONCAT 138.It 139ELI 140.It 141JOURNAL 142.It 143LABEL 144.It 145MIRROR 146.It 147MOUNTVER 148.It 149MULTIPATH 150.It 151NOP 152.It 153PART 154.It 155RAID 156.It 157RAID3 158.It 159SCHED 160.It 161SHSEC 162.It 163STRIPE 164.It 165VIRSTOR 166.El 167.Sh ENVIRONMENT 168The following environment variables affect the execution of 169.Nm : 170.Bl -tag -width ".Ev GEOM_LIBRARY_PATH" 171.It Ev GEOM_LIBRARY_PATH 172Specifies the path where shared libraries are stored instead of 173.Pa /lib/geom/ . 174Multiple paths can be specified with a colon-separated list of paths. 175.El 176.Sh EXIT STATUS 177Exit status is 0 on success, and 1 if the command fails. 178.Sh EXAMPLES 179The following example shows how to set up a stripe on three disks for automatic 180configuration: 181.Bd -literal -offset indent 182geom stripe label -v -s 65536 data /dev/da0 /dev/da1 /dev/da2 183or: 184gstripe label -v -s 65536 data /dev/da0 /dev/da1 /dev/da2 185.Ed 186.Pp 187Print the list of all providers from the DISK class: 188.Bd -literal -offset indent 189geom disk list 190.Ed 191.Pp 192Unload a kernel module which implements the MD class: 193.Bd -literal -offset indent 194geom md unload 195.Ed 196.Sh SEE ALSO 197.Xr libgeom 3 , 198.Xr geom 4 , 199.Xr gcache 8 , 200.Xr gconcat 8 , 201.Xr geli 8 , 202.Xr gjournal 8 , 203.Xr glabel 8 , 204.Xr gmirror 8 , 205.Xr gmountver 8 , 206.Xr gmultipath 8 , 207.Xr gnop 8 , 208.Xr gpart 8 , 209.Xr graid3 8 , 210.Xr gsched 8 , 211.Xr gshsec 8 , 212.Xr gstripe 8 , 213.Xr gvirstor 8 214.Sh HISTORY 215The 216.Nm 217utility appeared in 218.Fx 5.3 . 219.Sh AUTHORS 220.An Pawel Jakub Dawidek Aq Mt pjd@FreeBSD.org 221