topic Re: Host does not see FCP LUN mapped from v3140 in ONTAP Hardware

Host does not see FCP LUN mapped from v3140

crobertson — Thu, 05 Jun 2025 06:41:33 GMT

Very similar problem to http://communities.netapp.com/message/43282, but I DO see the HBAs logged in on the filer:

Vfiler-1> igroup show -v

VMhost9 (FCP):

OS Type: vmware

Member: 21:00:00:24:ff:23:4b:40 (logged in on: 0b, vtic)

Member: 21:00:00:24:ff:23:4b:41 (logged in on: 0b, vtic)

Further, I have the iGroup mapped to a LUN:

Vfiler-1> lun show -v

/vol/VMHost1BFS/root 20.0g (21428699136) (r/w, online, mapped)

Comment: "Boot from SAN for VMHost1"

Serial#: W-P8dJgKNTzg

Share: none

Space Reservation: enabled

Multiprotocol Type: vmware

Maps: VMhost9=0

The host refuses to see the LUN. The goal is to use this LUN as a boot partition for the host, but for testing purposes, I have installed VMware (ESXi 4.1) to local storage. Initiating a scan of the Storage Adapter returns quickly, but doesn't result in any found devices.

I have a FAS 270c connected to the same fabric, which works as expected.

What further information can I provide to help in finding a solution?

Re: Host does not see FCP LUN mapped from v3140

crobertson — Wed, 30 Nov 2011 00:52:59 GMT

For anyone who comes upon this message looking for anwers:

The resolution was to enable zoning on the FC switches. Oddly enough, even though the initiator was logged into the Filer, it (and two others that I tested with) would not "see" the LUNs until zoning was enabled.

My thanks go to Sarah and Vincent with NetApp support for their assistance with this vexing problem.

Re: Host does not see FCP LUN mapped from v3140

akw_white — Wed, 30 Nov 2011 01:51:53 GMT

What make and model of switch are you using in this case?

Re: Host does not see FCP LUN mapped from v3140

crobertson — Wed, 30 Nov 2011 21:50:16 GMT

The host connects to a Cisco UCS 6120 Fabric interconnect. The FAS3140 connects to a Cisco MDS 9124. The Fas270c (which worked before zoning and continues to work afterwards is on a MDS 9120. Both the UCS 6120 and the 9120 connect to the 9124.

So the data path that required zoning was QLogic initiator -> UCS 6120 -> MDS 9124 -> FAS 3140.

The data path that did not require zoning was QLogic initiator -> UCS 6120 -> MDS 9124 -> MDS 9120 -> FAS 270c.