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 possible
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 one-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 has occurred, 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
performed by the cluster does not write anything to a unmanaged MDisk.
It is only when you instruct the cluster to add an MDisk to a managed
disk group or use a MDisk to create an image mode volume that the
storage is actually 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 have not been assigned
to an 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