I would like to know the UUID of the CU:Ldevs we have provided to redhat linux servers.
From server end the SA can pull out that , however would like to know how to get it from Storage Array end.
In the provisioning guide for open systems (MK-90RD7022):
You can set an arbitrary ID to identify a logical volume from the host using LUN Manager when host mode option 33 is set to on. The ID is referred to as the UUID and is typically composed of Prefix and an Initial Number.
To set a UUID
In Storage Navigatyor select Ports/Host Groups
Select desired host group
Select LUNs tab
Select one mor emore logical units to which volumes are assigned.
Click More Actions
select Edit UUIDs
In the Edit UUIDs window, in Prefix, type the UUID.
If a UUID is already specified you can change it.
Sounds like host mode 05 openvms needs to be used to to set this option.... suggest reviewing the manual.
UUIDs are randomly generated from the host operating system.
Here's a good article on how they are generated and how to retrieve them from the OS:
There is a tool called inqraid provided by hitachi (raid manager) that will help you identify san disks.
If I am not wrong each CU:LDEVs hexa decimal number along wit VSP's serial number in Hexa provides the UUID on the Array end.
So i am trying to find a way to get that info from Array.
Thanks a lot
Hi, I am pretty sure the UUID you are referring to only applies to OpenVMS systems, not Linux. Example disk in OpenVMS is identified like 1$dga102, where "102" is the UUID you set in the host group...
The "UUID" of a VSP disk under Linux (similar to WWID in AIX) will have with the serial number converted to HEX in the middle, ending with the CU:LDEV identifier, as stated before. I am not aware of a way to see this number on the array itself, but I am positive you can use the number seen on any of your LUNs and only change the last 4 digits to appropriate CU:LDEV to get the number you need for a given disk.
Retrieving data ...