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GEOM (8) | System administration commands and daemons | Unix Manual Pages | :man▋
NAME
geom - "universal control utility for GEOM classes"
CONTENTS
Synopsis
Description
Environment
Exit Status
Examples
See Also
History
Authors
SYNOPSIS
geom class help geom class list [name ...] geom class status [-s] [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) 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_<class.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
- LABEL
- MIRROR
- NOP
- RAID3
- SHSEC
- STRIPE
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/. | |
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
geom(4), gconcat(8), glabel(8), gmirror(8), gnop(8), graid3(8), gshsec(8), gstripe(8)
HISTORY
AUTHORS
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