NSS device mappings

Question

Is there a definitive way to tell what linux device NSS pools/volumes are associated? IE. lsscsi tells me which LUN's my server sees, and mount tells me that they are mounted, but it does not indicate the linux device. I need a way to identify which LUN the NSS volumes are attached/mounted.

Answer 1

Originally Posted by will74103
Is there a definitive way to tell what linux device NSS pools/volumes are associated? IE. lsscsi tells me which LUN's my server sees, and mount tells me that they are mounted, but it does not indicate the linux device. I need a way to identify which LUN the NSS volumes are attached/mounted.
In a roundabout way.
(this is one way, I find it easier than iManager because it doesn't truncate the /dev/disk/by-id numbers)
Go into NSSMU -> Volumes (unless you know which pool the volume resides on already).
Find the pool the volume sits on.
Then go to NSSMU -> Pools
Hit F8, then F10 (List Devices)
It should return (if using MPIO or Qlogic HBA) the big hairy /dev/disk/by-id number
I usually make a note of the last 6-10 digits of the sucker.
Exit out of NSSMU
Then:
multipath -ll
(you may have to pipe it through more) and it'll list something like:
36000d310002476000000000000000007 dm-0 COMPELNT,Compellent Vol
[size=36G][features=1 queue_if_no_path][hwhandler=0]
\_ round-robin 0 [prio=1][active]
\_ 1:0:3:0 sdo 8:224 [active][ready]
\_ round-robin 0 [prio=1][enabled]
\_ 0:0:3:0 sdl 8:176 [active][ready]
\_ round-robin 0 [prio=1][enabled]
\_ 1:0:2:0 sdk 8:160 [active][ready]
\_ round-robin 0 [prio=1][enabled]
\_ 1:0:1:0 sdh 8:112 [active][ready]
\_ round-robin 0 [prio=1][enabled]
\_ 0:0:2:0 sdf 8:80 [active][ready]
\_ round-robin 0 [prio=1][enabled]
\_ 1:0:0:0 sde 8:64 [active][ready]
\_ round-robin 0 [prio=1][enabled]
\_ 0:0:1:0 sdc 8:32 [active][ready]
\_ round-robin 0 [prio=1][enabled]
\_ 0:0:0:0 sda 8:0 [active][ready]
Where the last number (0:0:1:0) is the LUN #
I think there's other ways to find this out as well if you're not using MPIO.
Might be in the Yast -> Partitioner as well, but I don't think it shows LUN numbers, but rather the DM-XXXX format.
if lsscsi gives you the LUN # and the /dev/disk/by-id (assuming you're using that) then you have the info you need.
For example, on an HP Proliant server with the RAID cards, you don't get the LUN numbers you have to use the cpq stuff to get the cpqid (there's a doc from HP that explains their naming conventions) because it's a Logical Drive (technically a LUN, but still)