Use the lsmdiskcandidate command to list all unmanaged MDisks by
MDisk ID.
Syntax
lsmdiskcandidate [ -nohdr ] [ -delimdelimiter ]
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