The
utility is used to control various GEOM classes.
A class has to be aware of
geom(8)
comunication 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.
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:
-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_ Ao class Ac .ko
can be found in one of the directories specifed 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
g class
Currently available classes which are aware of
geom(8):
CONCAT
ELI
LABEL
MIRROR
NOP
RAID3
SHSEC
STRIPE
VIRSTOR
ENVIRONMENT
The following environment variables affect the execution of
:
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:
