My best guess is that filer ports were configured as initiator by default and somehow conflicted with host HBAs (filer will try to use LUNs is found as disks). Do you use two port zones on fan-out (single initiator - multiple targets)? Note that motherboard replacement procedure recommends unconnecting ports until they are properly configured.
-----Original Message----- From: toasters-bounces@teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of Momonth Sent: Monday, February 02, 2015 1:26 PM To: toasters@teaparty.net Subject: Motherboard replacement on FAS3270 caused fabric wide issue
Hi All,
I hit the following bug on one of the filer (FAS3260) I manage:
http://mysupport.netapp.com/NOW/cgi-bin/bol?Type=Detail&Display=659544
This filer (filer-prod-204) works in HA mode with filer-prod-203. They are connected to two redundant FC SAN fabrics (one connection from each filer per fabric). There are more HA pairs connected to the same fabrics, eg filer-prod-201 / filer-prod-202. All of the filers we have are running in 'single-image' mode. We run FC SAN fabrics in "hard zoning mode".
NetApp support conclusion was to replace motherboard on the filer and we proceeded with that.
Here is an issue we had and I have no explanation to that, I hope you guys can help me with that:
Once the filer-prod-204 got the motherboard replaced, powered on and entered HW diagnostics mode I've seen the messages as below *on every other filer* (eg. filer-prod-201), connected to the same fabric, causing issues on hosts (CentOS 6.4 mainly) attached to them:
Fri Jan 30 20:07:45 CET [filer-prod-201: scsitarget.ispfct.targetReset:notice]: FCP Target 0c: Target was Reset by the Initiator at Port Id: 0x11000 (WWPN 5001438021e071ec) Fri Jan 30 20:07:46 CET [filer-prod-201: scsitarget.ispfct.targetReset:notice]: FCP Target 0c: Target was Reset by the Initiator at Port Id: 0x10200 (WWPN 50014380186abac4) ...
Fri Jan 30 20:08:14 CET [filer-prod-201: scsitarget.ispfct.portLogin:notice]: FCP login on Fibre Channel adapter '0c' from '50:01:43:80:21:e0:71:ec', address 0x11000. Fri Jan 30 20:08:14 CET [filer-prod-201: scsitarget.ispfct.portLogin:notice]: FCP login on Fibre Channel adapter '0c' from '50:01:43:80:18:6a:ba:c4', address 0x10200.
So every single initiator on the filer *not involved* in the maintenance were reset, then tried to login back, reset again and it looped like that until I disabled filer-prod-204's target ports on the FC switches. Once the filer-prod-204 booted up with OnTAP, the issue was gone. I know it because when I tried to re-enabled the filer-prod-204's target ports, I didn't see any message like above and everything is running fine since then.
Does anyone have an idea what was happing here and why?
Cheers, Vladimir _______________________________________________ Toasters mailing list Toasters@teaparty.net http://www.teaparty.net/mailman/listinfo/toasters