Use the lsmdiskcandidate command to
list all unmanaged MDisks by MDisk ID.
Syntax
lsmdiskcandidate [ -nohdr ] [ -delim delimiter ]
Parameters
- -nohdr
- (Optional) By default, headings are displayed for each column
of data in a concise style view, and for each item of data in a detailed
style view. The -nohdr parameter suppresses the
display of these headings.
Note: If there is no data to be displayed,
headings are not displayed.
- -delim delimiter
- (Optional) By default in a concise view, all columns of data are space-separated. The width of
each column is set to the maximum width of each item of data. In a detailed view, each item of data
has its own row, and if the headers are displayed, the data is separated from the header by a space.
The -delim parameter overrides this behavior. Valid input for the
-delim parameter is a 1-byte character. If you enter -delim
: on the command line, the colon character (:) separates all items of data
in a concise view; for example, the spacing of columns does not occur. In a detailed view, the data
is separated from its header by the specified delimiter.
Description
This
command displays a list of MDisks that are unmanaged. Only the MDisk
IDs are displayed.
When back-end controllers are added to the
Fibre Channel SAN and are included
in the same switch zone as a cluster, the cluster automatically detects the back-end controller to
determine which storage is presented to the node. The SCSI logical units that are presented by the
back-end controller are displayed as unmanaged MDisks. However, if the configuration of the back-end
controller is modified after this occurs, the cluster might be unaware of these configuration
changes. You can then request that the cluster rescan the
Fibre Channel SAN to
update the list of unmanaged MDisks.
Note: The automatic detection that is performed by the cluster
does not write anything to an unmanaged MDisk. It is only when you instruct the cluster to add an
MDisk to a storage pool or use a MDisk to create an image mode volume that the storage is
used.
Check to see which MDisks are available by issuing the detectmdisk
command to manually scan the Fibre Channel network for any MDisks. Issue the
lsmdiskcandidate command to show the unmanaged MDisks. These MDisks are not
assigned to a storage pool. Alternatively, you can issue the lsmdisk command to
view all of the MDisks.
An invocation example
lsmdiskcandidate
The
resulting output:
id
5
6
7
8
9
10
11
12
13
14