GEOM(8) 						    BSD System Manager's Manual 						   GEOM(8)

NAME

     geom -- universal control utility for GEOM classes

SYNOPSIS

     geom class help
     geom class list [-a] [name ...]
     geom class status [-ags] [name ...]
     geom class load [-v]
     geom class unload [-v]

DESCRIPTION

     The geom utility is used to control various GEOM classes.	A class has to be aware of geom(8) communication methods, but there are also some
     standard commands which can be used for existing geom(8) unaware classes.	Here is the list of standard commands:

     help    List all available commands for the given class.

     list    Print detailed information (within the given class) about all geoms (if no additional arguments were specified) or the given geoms.
	     This command is only available if the given class exists in the kernel.  Additional options include:

	     -a  Print information for geoms without providers.

     status  Print general information (within the given class) about all geoms (if no additional arguments were specified) or the given geoms.
	     This command is only available if the given class exists in the kernel.

	     Additional options include:

	     -a  When used with -g, print status for geoms without providers.

	     -g  Report statuses for geoms instead of providers.

	     -s  Produce script-friendly output.

     load    Load the kernel module that implements the given class.  This command is only available if the class does not yet exist in the kernel
	     and the file geom_<class>.ko can be found in one of the directories specified in kern.module_path sysctl.

     unload  Unload the kernel module which implements the given class.  This command is only available if the given class is loaded as a kernel
	     module.

     Class-specific commands are implemented as shared libraries which are stored in /lib/geom/ directory and are loaded via dlopen(3) function
     when the class name is known.  When a class-specific shared library exists, a direct utility should also be available under the name of
     gclass.

     Currently available classes which are aware of geom(8):

	   o   CACHE
	   o   CONCAT
	   o   ELI
	   o   JOURNAL
	   o   LABEL
	   o   MIRROR
	   o   MOUNTVER
	   o   MULTIPATH
	   o   NOP
	   o   PART
	   o   RAID
	   o   RAID3
	   o   SCHED
	   o   SHSEC
	   o   STRIPE
	   o   VIRSTOR

ENVIRONMENT

     The following environment variables affect the execution of geom:

     GEOM_LIBRARY_PATH	Specifies the path where shared libraries are stored instead of /lib/geom/.  Multiple paths can be specified with a colon-
			separated list of paths.

EXIT STATUS

     Exit status is 0 on success, and 1 if the command fails.

EXAMPLES

     The following example shows how to set up a stripe on three disks for automatic configuration:

	   geom stripe label -v -s 65536 data /dev/da0 /dev/da1 /dev/da2
	   or:
	   gstripe label -v -s 65536 data /dev/da0 /dev/da1 /dev/da2

     Print the list of all providers from the DISK class:

	   geom disk list

     Unload a kernel module which implements the MD class:

	   geom md unload

SEE ALSO

     libgeom(3), geom(4), gcache(8), gconcat(8), geli(8), gjournal(8), glabel(8), gmirror(8), gmountver(8), gmultipath(8), gnop(8), gpart(8),
     graid3(8), gsched(8), gshsec(8), gstripe(8), gvirstor(8)

HISTORY

     The geom utility appeared in FreeBSD 5.3.

AUTHORS

     Pawel Jakub Dawidek <pjd@FreeBSD.org>

BSD
								  January 5, 2011							       BSD