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I have never seen FCoE before, no idea how it looks like when it works, but I'm sure it doesn't work on any hardware.

Maybe Espen Braastad could boot from a Fibre Channel SAN via FCoE, but virtio-net doesn't support FCoE even compiled from ipxe.org.
I compiled virtio-net.rom but in installation withfcoe=1 there is eth0 device not capable of FCoE or DCB and only retry detection button active
I could use compiled rom only by overwriting existing rom, qemu can't define custom network driver/rom, so I have no idea how would we use it in openQA.

Maybe I did something wrong, any ideas or help are welcome! ;)

For the FCoE target, I was assuming you'd use the same underlying tools you use with iSCSI - http://linux-iscsi.org/wiki/Fibre_Channel_over_Ethernet

for the initiator you'd need to use fcoe-utils, which I believe we have in SLE 12 ... docs are like here https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Storage_Administration_Guide/fcoe-config.html

So really, it should be the same as the iSCSI tests you've already done, just more CLI, no YaST modules ;)

I'm pretty sure it's not so easy to just run FCoE over any ethernet card.

FCoE doesn't run over regular Ethernet though, it requires Data Centre Ethernet/Bridging - an evolution of Ethernet that is only current supported on a very limited number of, typically high-end, switches such as Cisco's Nexus range.
Source: http://serverfault.com/questions/424969/fcoe-on-any-ethernet-switch

FCoE most probably needs VLAN setup http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/operations/n5k_fcoe_ops_appB.html

Need DCB feature most probably too, all network cards I tried didn't had DCB capability.

In qemu I can hook SAN/iSCSI device on boot, but that's all, no FCoE/DCB posibillity to do any setup, see http://paste.opensuse.org/07024e51

FCoE need more than just ethernet card, also some freaky switch with FCoE configuration.

yast2 fcoe-client -> Help -> Interfaces:
FCoE is possible if a VLAN interface is configured for FCoE on the switch.
The values for FCoE VLAN Interface in detail:
not available: Fibre Channel over Ethernet is not possible (must be enabled on the switch first).

is openvswitch an option here? we have openvswitch on openQA now, creating it's own VLANs...

Richard below is approx. 5 years old post, now I know why I didn't hear/see/use FCoE before :P
http://www.networkworld.com/article/2220631/cisco-subnet/why-fcoe-is-dead--but-not-buried-yet.html

https://bugzilla.suse.com/show_bug.cgi?id=975051
https://bugzilla.suse.com/show_bug.cgi?id=975149