FAS2020:Luns not visible after takeover

[shashidhargc]

Hi,

Ther's FAS 2020, ith controller1 sharing a few LUNs to a Windows machine. Controller2 is standby. Recently there was Controller replacement on Controller2. After the replacement

when cntrllr2 takes over cntrllr1, luns are not visible.

CNTRL01> fcadmin config

                  Local 

Adapter Type      State                  Status

---------------------------------------------------

  0a   target     CONFIGURED             online

  0b   initiator  CONFIGURED.            online

CNTRL02> fcadmin config

                  Local 

Adapter Type      State                  Status

---------------------------------------------------

  0a   initiator  CONFIGURED             online

  0b   target     CONFIGURED             online

Need help, kindly let me know wat settings can i check to troubleshoot this issue.

[rickymartin]

Sounds a little like the change in the serial number of the new controller has changed the serial number of the LUN's (depends on how the upgrade was done see https://kb.netapp.com/support/index?page=content&id=1011538), or possibly that the WWNN or WWPN info has changed and the mapping back to the hosts via the SAN isnt right any more.

If you havent already done so, raise a P1 case with NetApp support.

[shashidhargc · Accepted solution]

Problem was solved after updating the WWPNs of new controller on to the SAN switch zones.

Guess the FE who replaced the controller forgot to do it.