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glabel (8)
>> glabel (8) ( FreeBSD man: Команды системного администрирования )
BSD mandoc
NAME
glabel
- disk labelization control utility
SYNOPSIS
create
[-v
]
namedev destroy
[-fv
]
name ... label
[-v
]
namedev stop
[-fv
]
name ... clear
[-v
]
dev ... dumpdev ... list status load unload
DESCRIPTION
The
utility is used for GEOM provider labelization.
A label can be set up on a GEOM provider in two ways:
``manual''
or
``automatic''
When using the
``manual''
method, no metadata are stored on the devices, so a label has to be configured
by hand every time it is needed.
The
``automatic''
method uses on-disk metadata to store the label and detect it automatically in
the future.
This class also provides volume label detection for file systems.
Those labels cannot be set with
,
but must be set with the appropriate file system utility, e.g. for UFS
the file system label is set with
tunefs(8).
Currently supported file systems are:
Non file-system labels are created in the directory
/dev/label/
The first argument to
indicates an action to be performed:
create
Create temporary label
name
for the given provider.
This is the
``manual''
method.
The kernel module
geom_label.ko
will be loaded if it is not loaded already.
label
Set up a label
name
for the given provider.
This is the
``automatic''
method, where metadata is stored in a provider's last sector.
The kernel module
geom_label.ko
will be loaded if it is not loaded already.
stop
Turn off the given label by its
name
This command does not touch on-disk metadata!
The following
sysctl(8)
variables can be used to control the behavior of the
LABEL
GEOM class.
The default value is shown next to each variable.
kern.geom.label.debug : 0
Debug level of the
LABEL
GEOM class.
This can be set to a number between 0 and 2 inclusive.
If set to 0 minimal debug information is printed, and if set to 2 the
maximum amount of debug information is printed.
EXIT STATUS
Exit status is 0 on success, and 1 if the command fails.
EXAMPLES
The following example shows how to set up a label for disk
``da2
''
create a file system on it, and mount it:
