For the last question:
These are the Technical Knowledge Base documents. You need to get access to TKB from ITRC home page, then select "search by doc ID" and enter the document number there (DKKBRC00006641). This is the document you are looking for:
Only first LUN of 3rd party disk array visible in SAM DocId: DKKBRC00006641 Updated: 5/2/01 5:38:00 AM
PROBLEM
I attached a 3rd party disk array to my system. Although all configured LUNs
are visible with ioscan(1M) I only see the 1st LUN in SAM.CONFIGURATION
HP-UX 10.X, 11.X
SAMRESOLUTION
Typically devices that are unknown to SAM are unsupported by HP. Nevertheless
we may try our best to make SAM happy.
For unknown disk devices SAM uses the serial number to identify alternate PV
links. Some disk arrays (including Nikes and AutoRAIDs) show the same serial
number for all configured LUNs, so SAM needs a special handling in these cases.
A CRC checksum of the serial number can be found in the last 4 columns of the
12th field of ioscan -F:
e.g.:
# ioscan -FkCdisk | awk -F: '{print $18"\t"$12}'
STK OPENstorage 9176 0 0 2 2 0 0 0 0 57 145 86 53 249 250 207 23
STK OPENstorage 9176 0 0 2 2 0 0 0 0 57 145 86 53 249 250 207 23
STK OPENstorage 9176 0 0 2 2 0 0 0 0 57 145 86 53 249 250 207 23
STK OPENstorage 9176 0 0 2 2 0 0 0 0 57 145 86 53 249 250 207 23
STK OPENstorage 9176 0 0 2 2 0 0 0 0 57 145 86 53 249 250 207 23
STK OPENstorage 9176 0 0 2 2 0 0 0 0 57 145 86 53 249 250 207 23
STK OPENstorage 9176 0 0 2 2 0 0 0 0 57 145 86 53 249 250 207 23
^^^^^^^^^^^^^^
To make the disk array LUNs known to SAM we need to add an entry
to the file /usr/sam/lib/C/pd_devinfo.tx. Since Nike disk arrays also show
identical serial numbers we choose the type 'CLARIION' for this entry.
For the example STK disk array we could add (in one single line!):
DISK:::sdisk:::.*STK.*OPENstorage.*::::::::::::::
STK OPENstorage LUN:::::DISK_ARRAY,CLARIION
Now SAM should be able to show and configure all LUNs of the disk array.
However SAM is unable to distinguish the different LUNs since they show up with
the same serial number. The result may be the following warning message:
"SAM has detected unused disks with non-unique device identifications. These
disks may have multiple hardware paths. If this is the case, use the Disk
Devices Action "Mark Disk As Used" on the entries that correspond to additional
hardware paths to prevent possible data corruption."
Caveats:
Please note that the pd_devinfo.tx file may be overwritten by any SAM patch
installation. All changes need to be re-applied in such situations!
Please note that changing the pd_devinfo.tx file is unsupported by HP. It is
only a workaround to make SAM work with unsupported devices!
Life is a promise, fulfill it!
