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glabel (8)
  • >> glabel (8) ( FreeBSD man: Команды системного администрирования )

  • BSD mandoc
     

    NAME

    
    
    glabel
    
     - disk labelization control utility
    
     
    

    SYNOPSIS

    create [-v ] name dev
    destroy [-fv ] name ...
    label [-v ] name dev
    stop [-fv ] name ...
    clear [-v ] dev ...
    dump dev ...
    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!
    destroy
    Same as stop
    clear
    Clear metadata on the given devices.
    dump
    Dump metadata stored on the given devices.
    list
    See geom(8).
    status
    See geom(8).
    load
    See geom(8).
    unload
    See geom(8).

    Additional options:

    -f
    Force the removal of the specified labels.
    -v
    Be more verbose.

     

    SYSCTL VARIABLES

    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:
    glabel label -v usr /dev/da2
    newfs /dev/label/usr
    mount /dev/label/usr /usr
    [...]
    umount /usr
    glabel stop usr
    glabel unload
    

    The next example shows how to set up a label for a UFS file system:

    tunefs -L data /dev/da4s1a
    mount /dev/ufs/data /mnt/data
    
     

    SEE ALSO

    geom(4), loader.conf5, geom(8), mount(8), newfs(8), sysctl(8), tunefs(8), umount(8)  

    HISTORY

    The utility appeared in Fx 5.3 .  

    AUTHORS

    An Pawel Jakub Dawidek Aq [email protected]


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    SYSCTL VARIABLES
    EXIT STATUS
    EXAMPLES
    SEE ALSO
    HISTORY
    AUTHORS


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