lsmdiskcandidate
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
lsmdiskcandidateThe resulting output:
id
5
6
7
8
9
10
11
12
13
14