Need a little help with a vn2vn target & initiator setup

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Hello,

First, thanks for this great project!  We have been using the FC target
for a few months now for KVM disk IO scalability analysis, and it has
been a great resource for us!  We're able to do >1.4 M IOPS with
multiple VMs via PCI-pass-through, and we're now testing virtio
scalability enhancements, so it's been an incredibly useful feature for
us!

We are now trying to create a test-bed with FCoE, with only FCoE targets
and initiators (no FCF's).  For the moment, I am trying a
directly-connected 82599EB adapters from two systems (one the target,
the other the initiator).  These interfaces are configured for IP and
ping-able.  I created vn2vn FC ports and I now have 1 fc_host per
system.  I have created a target on one via targetcli with a single LUN:


> /> ls
> o- / ......................................................................................................... [...]
>   o- backstores .............................................................................................. [...]
>   | o- block .................................................................................... [0 Storage Object]
>   | o- fileio ................................................................................... [1 Storage Object]
>   | | o- lun1 ..................................................................... [/tmp/lun1.img (1.0G) activated]
>   | o- pscsi .................................................................................... [0 Storage Object]
>   o- loopback ........................................................................................... [0 Target]
>   o- tcm_fc ............................................................................................. [1 Target]
>     o- 20:00:00:1b:21:4b:0a:0e ........................................................................... [enabled]
>       o- acls .............................................................................................. [1 ACL]
>       | o- 20:00:00:1b:21:67:5f:2a .................................................................. [1 Mapped LUN]
>       |   o- mapped_lun1 ................................................................... [lun1 fileio/lun1 (rw)]
>       o- luns .............................................................................................. [1 LUN]
>         o- lun1 ...................................................................... [fileio/lun1 (/tmp/lun1.img)]

The initiator has a port name of 0x2000001b21675f2a and both target and
initiator ports are "Online".  However, after re-scanning for devices,
the initiator does not find any new LUNs.  

I tried to do a fcping, but I can only successfully ping a FC ID, and
not a port name:

> [root@spv-21 ~]# fcping -c 3 -h eth6 -F 0x000a0e
> sending echo to 0xA0E
> echo    1 accepted                        0.468 ms
> echo    2 accepted                        0.428 ms
> echo    3 accepted                        0.462 ms
> 3 frames sent, 3 received 0 errors, 0.000% loss, avg. rt time 0.453 ms

> [root@spv-21 ~]# fcping -h eth6 -N 0x2000001b214b0a0e
> GID_NN error: Invalid argument
> cannot find fcid of destination @ wwnn 0x2000001B214B0A0E

I am wondering if there's still a connectivity problem.  [Not knowing
much about the world of FC] Is there some sort of wwnn-to-fcid mapping
that I am missing?  Or maybe something else?

Thanks,

-Andrew


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