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GEOM(8)			FreeBSD	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	stan-
     dard 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 ker-
	     nel 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 speci-
			fied 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>

FreeBSD	9.2			January	5, 2011			   FreeBSD 9.2

NAME | SYNOPSIS | DESCRIPTION | ENVIRONMENT | EXIT STATUS | EXAMPLES | SEE ALSO | HISTORY | AUTHORS

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