Hi,

some facts:
ovirt-node 4.3.10  (based on Centos 7)
hosts are HP blades BL460C with network card supporting iscsi HBA (there are no iscsi nics visible on OS level, but i had to configure ip addresses manually since they were not inherited from BIOS )

# iscsiadm -m iface
default tcp,<empty>,<empty>,<empty>,<empty>
iser iser,<empty>,<empty>,<empty>,<empty>
be2iscsi.c4:34:6b:b3:85:75.ipv4.0 be2iscsi,c4:34:6b:b3:85:75,172.40.2.21,<empty>,iqn.1990-07.com.emulex:ovirt1worker1
be2iscsi.c4:34:6b:b3:85:75.ipv6.0 be2iscsi,c4:34:6b:b3:85:75,<empty>,<empty>,iqn.1990-07.com.emulex:ovirt1worker1
be2iscsi.c4:34:6b:b3:85:71.ipv6.0 be2iscsi,c4:34:6b:b3:85:71,<empty>,<empty>,iqn.1990-07.com.emulex:ovirt1worker1
be2iscsi.c4:34:6b:b3:85:71.ipv4.0 be2iscsi,c4:34:6b:b3:85:71,172.40.1.21,<empty>,iqn.1990-07.com.emulex:ovirt1worker1

# iscsiadm -m session
be2iscsi: [1] 172.40.2.1:3260,12 iqn.1992-04.com.emc:cx.ckm00143501947.a0 (non-flash)
be2iscsi: [2] 172.40.2.2:3260,6 iqn.1992-04.com.emc:cx.ckm00143501947.b1 (non-flash)
be2iscsi: [5] 172.40.1.1:3260,5 iqn.1992-04.com.emc:cx.ckm00143501947.a1 (non-flash)
be2iscsi: [6] 172.40.1.2:3260,4 iqn.1992-04.com.emc:cx.ckm00143501947.b0 (non-flash)

[root@worker1 ~]# multipath -l
3600601604a003a00ee4b8ec05aa5ec11 dm-47 DGC     ,VRAID
size=100G features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='1 alua' wp=rw
|-+- policy='service-time 0' prio=0 status=active
| |- 3:0:2:1 sds 65:32 active undef running
| `- 4:0:0:1 sdo 8:224 active undef running
`-+- policy='service-time 0' prio=0 status=enabled
  |- 3:0:3:1 sdu 65:64 active undef running
  `- 4:0:1:1 sdq 65:0  active undef running
...

target SAN storage is detected, and exposed LUNs are visible. I can even partition them, create filesystem and mount them in OS, all when doing manually step by step.

when trying to add Storage Domain in iscsi the LUNs/targets are nicely visible in GUI, buf after choosing a LUN the domain becomes locked and finally enters detatched mode. can not attach the Datacenter.


in engine.log similar entry for each host:

2022-03-16 22:27:40,736+01 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.ConnectStorageServerVDSCommand] (EE-ManagedThreadFactory-engine-Thread-1111) [e8778752-1bc1-4ba9-b9c0-ce651d35d824] START, ConnectStorageServerVDSCommand(HostName = worker1, StorageServerConnectionManagementVDSParameters:{hostId='d009f919-b817-4220-874e-edb0e072faa1', storagePoolId='00000000-0000-0000-0000-000000000000', storageType='ISCSI', connectionList='[StorageServerConnections:{id='4dd97e5d-c162-4997-8eda-3d8881c44e31', connection='172.40.1.2', iqn='iqn.1992-04.com.emc:cx.ckm00143501947.b0', vfsType='null', mountOptions='null', nfsVersion='null', nfsRetrans='null', nfsTimeo='null', iface='null', netIfaceName='null'}, StorageServerConnections:{id='6e52a5bb-0157-4cbe-baa3-cfc8001d35b2', connection='172.40.2.1', iqn='iqn.1992-04.com.emc:cx.ckm00143501947.a0', vfsType='null', mountOptions='null', nfsVersion='null', nfsRetrans='null', nfsTimeo='null', iface='null', netIfaceName='null'}, StorageServerConnecti
 ons:{id='87194270-bb0e-49d8-9700-17436f2a3e28', connection='172.40.1.1', iqn='iqn.1992-04.com.emc:cx.ckm00143501947.a1', vfsType='null', mountOptions='null', nfsVersion='null', nfsRetrans='null', nfsTimeo='null', iface='null', netIfaceName='null'}, StorageServerConnections:{id='ef8e2fbd-cbf6-45e9-8e83-f85a50001c2d', connection='172.40.2.2', iqn='iqn.1992-04.com.emc:cx.ckm00143501947.b1', vfsType='null', mountOptions='null', nfsVersion='null', nfsRetrans='null', nfsTimeo='null', iface='null', netIfaceName='null'}]', sendNetworkEventOnFailure='true'}), log id: 317c3ffd

...

2022-03-16 22:30:40,836+01 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.ConnectStorageServerVDSCommand] (EE-ManagedThreadFactory-engine-Thread-1111) [e8778752-1bc1-4ba9-b9c0-ce651d35d824] Command 'ConnectStorageServerVDSCommand(HostName = worker1, StorageServerConnectionManagementVDSParameters:{hostId='d009f919-b817-4220-874e-edb0e072faa1', storagePoolId='00000000-0000-0000-0000-000000000000', storageType='ISCSI', connectionList='[StorageServerConnections:{id='4dd97e5d-c162-4997-8eda-3d8881c44e31', connection='172.40.1.2', iqn='iqn.1992-04.com.emc:cx.ckm00143501947.b0', vfsType='null', mountOptions='null', nfsVersion='null', nfsRetrans='null', nfsTimeo='null', iface='null', netIfaceName='null'}, StorageServerConnections:{id='6e52a5bb-0157-4cbe-baa3-cfc8001d35b2', connection='172.40.2.1', iqn='iqn.1992-04.com.emc:cx.ckm00143501947.a0', vfsType='null', mountOptions='null', nfsVersion='null', nfsRetrans='null', nfsTimeo='null', iface='null', netIfaceName='null'}, StorageServerConnec
 tions:{id='87194270-bb0e-49d8-9700-17436f2a3e28', connection='172.40.1.1', iqn='iqn.1992-04.com.emc:cx.ckm00143501947.a1', vfsType='null', mountOptions='null', nfsVersion='null', nfsRetrans='null', nfsTimeo='null', iface='null', netIfaceName='null'}, StorageServerConnections:{id='ef8e2fbd-cbf6-45e9-8e83-f85a50001c2d', connection='172.40.2.2', iqn='iqn.1992-04.com.emc:cx.ckm00143501947.b1', vfsType='null', mountOptions='null', nfsVersion='null', nfsRetrans='null', nfsTimeo='null', iface='null', netIfaceName='null'}]', sendNetworkEventOnFailure='true'})' execution failed: VDSGenericException: VDSNetworkException: Message timeout which can be caused by communication issues


how to make it working?
I read offload iscsi is supported but all the documentation i found is for software iscsi.

any hints welcomed
thanks
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