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Windows Server 2012 servers stopped seeing LUNs that were mapped from NeptApp FAS2552 ONTAP 9.1

areti

Hello!

There was an emergency restart of the equipment (servers, FC switches). After that, two Windows Server 2012 servers stopped seeing LUNs that were mapped from NeptApp FAS2552 (ONTAP 9.1 Cluster Mode) . I tried re-presenting LUNs to servers, but with no success. The servers can't see these LUNs.

The netap itself did not reboot, but in the logs events of disconnection of links on fс ports were recorded (servers and fс-switches were rebooted).

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Accepted answers

Ontapforrum

Please share this output:

::> network fcp adapter show

All comments

areti

On the same NetAPP 2552, other LUNs for ESX VMware servers are presented, and everything works fine.

And the Windows 2012 server, which does not see LUNs on NetApp 2552, works without any problems with LUNs on NetApp2240 and FAS2750, which are also connected to the same FC switches.

The only problem is in the bundle of NetApp2552 and Windows Server 2012 - they do not see each other in the SAN network, and this happened yesterday after an emergency restart of FC switches and Windows Server 2012 servers.

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areti

I created a new LUN and presented it to the server, anyway the server does not see this LUN.
And when choosing an initiator, there is no WWWN of this server in the drop-down list, you can only enter it manually. The conclusion is that the FAS2552 and the server do not see each other over the SAN network, but they work fine with other devices in this SAN network.

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Ontapforrum

Please share this output:

::> network fcp adapter show

areti

fas2552::> network fcp adapter show
Connection Host
Node        Adapter Established Port Address
------------ -------         -----------       ------------
fas2552-01         0c            loop         0
fas2552-01         0d            loop         0
fas2552-01 0e    ptp            11700
fas2552-01         0f            ptp             11700
fas2552-02          0c           loop          0
fas2552-02          0d          loop           0
fas2552-02         0e            ptp             10000
fas2552-02         0f             ptp             10000
8 entries were displayed.

network fcp adapter show.JPG

Ontapforrum

Sorry I needed to check 'operations status' of those ports, please give me this:

::> network fcp adapter show -fields status-oper

not_a_Lone_wolf

@areti Compare the output of the above command with the one mentioned in the following kb :https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Systems/FAS_Systems/FCP_target_adapter_showing_'LINK_DISCONNECTED'_after_'scsitarget.ispfct.linkbreak'_event%2C_and_does_not_automatically_recover

areti

fas2552::> network fcp adapter show -fields status-oper
node adapter status-oper
---------- ------- ------------------
fas2552-01 0c link not connected
fas2552-01 0d link not connected
fas2552-01 0e online
fas2552-01 0f online
fas2552-02 0c link not connected
fas2552-02 0d link not connected
fas2552-02 0e online
fas2552-02 0f online
8 entries were displayed.