Finding the WWN in an inactive HBA in Solaris
So, Solaris comes with lots of nice tools for querying our SAN HBAs, but the ones we’ve looked at so far are only of any real use when the HBA has a live connection to it.
What about when we want to find the WWN to setup our SAN, before we’ve plugged any fibre in?
picl is a hardware monitoring daemon in Solaris. I first started playing with it on mid-frame and high-end machines (SF6500s and F15ks) where the system controller (SC) talked to picl to do hardware monitoring of a Solaris domain.
We can talk to picl ourselves with prtpicl. We need the verbose option to get something useful, but be warned – this will dump out pages and pages of stuff – so we need to filter it a bit with grep.
[email protected]>prtpicl -v | grep wwn :node-wwn 20 00 00 e0 8b 1e a9 ef :port-wwn 21 00 00 e0 8b 1e a9 ef :node-wwn 20 00 00 e0 8b 3e a9 ef :port-wwn 21 01 00 e0 8b 3e a9 ef :node-wwn 20 00 00 e0 8b 80 9c a8 :port-wwn 21 00 00 e0 8b 80 9c a8 :node-wwn 20 00 00 e0 8b a0 9c a8 :port-wwn 21 01 00 e0 8b a0 9c a8 :node-wwn 20 00 00 03 ba db e9 89 :port-wwn 21 00 00 03 ba db e9 89 :node-wwn 20 00 00 00 87 83 fd 1c :port-wwn 21 00 00 00 87 83 fd 1c :node-wwn 20 00 00 00 87 84 4a d8 :port-wwn 21 00 00 00 87 84 4a d8
These are the node WWNs that we’re after, with the first one being c2, the second c3, and so on. The internal controller is last, and we can see the WWNs of the two FC disks that are hanging off it. (Remember, on a V490 we have internal FC-AL disks, not SCSI).
Finally, for our last trick, if we have Solaris 10 01/06 or later, we can use the awesome fcinfo command, which makes all of this very, very easy indeed.
[email protected] # fcinfo hba-port HBA Port WWN: 210000e08b1ea9ef OS Device Name: /dev/cfg/c2 Manufacturer: QLogic Corp. Model: QLE2460 Type: unknown State: offline Supported Speeds: 1Gb 2Gb 4Gb Current Speed: not established Node WWN: 200000e08b1ea9ef
Easy! Another good reason for upgrading to Solaris 10 – there are lots of nice tools and new features like this that make the day to day administration much easier.