When trying to add a storage domain to a 4.4 host I'm getting this error message:

Error while executing action New NFS Storage Domain: Unexpected exception

The errors from vdsm.log:

2020-01-02 09:38:33,578-0500 ERROR (jsonrpc/0) [storage.initSANLock] Cannot initialize SANLock for domain 6ca1e203-5595-47e5-94b8-82a7e69d99a9 (clusterlock:259)
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/vdsm/storage/clusterlock.py", line 250, in initSANLock
    lockspace_name, idsPath, align=alignment, sector=block_size)
sanlock.SanlockException: (-202, 'Sanlock lockspace write failure', 'IO timeout')
2020-01-02 09:38:33,579-0500 INFO  (jsonrpc/0) [vdsm.api] FINISH createStorageDomain error=Could not initialize cluster lock: () from=::ffff:192.168.100.1,36452, flow_id=17dc614
e, task_id=05c2107a-4d59-48d0-a2f7-0938f051c9ab (api:52)
2020-01-02 09:38:33,582-0500 ERROR (jsonrpc/0) [storage.TaskManager.Task] (Task='05c2107a-4d59-48d0-a2f7-0938f051c9ab') Unexpected error (task:874)
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/vdsm/storage/clusterlock.py", line 250, in initSANLock
    lockspace_name, idsPath, align=alignment, sector=block_size)
sanlock.SanlockException: (-202, 'Sanlock lockspace write failure', 'IO timeout')

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/vdsm/storage/task.py", line 881, in _run
    return fn(*args, **kargs)
  File "<decorator-gen-121>", line 2, in createStorageDomain
  File "/usr/lib/python3.6/site-packages/vdsm/common/api.py", line 50, in method
    ret = func(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/vdsm/storage/hsm.py", line 2622, in createStorageDomain
    max_hosts=max_hosts)
  File "/usr/lib/python3.6/site-packages/vdsm/storage/nfsSD.py", line 120, in create
    fsd.initSPMlease()
  File "/usr/lib/python3.6/site-packages/vdsm/storage/sd.py", line 974, in initSPMlease
    return self._manifest.initDomainLock()
  File "/usr/lib/python3.6/site-packages/vdsm/storage/sd.py", line 620, in initDomainLock
    self._domainLock.initLock(self.getDomainLease())
  File "/usr/lib/python3.6/site-packages/vdsm/storage/clusterlock.py", line 308, in initLock
    block_size=self._block_size)
  File "/usr/lib/python3.6/site-packages/vdsm/storage/clusterlock.py", line 260, in initSANLock
    raise se.ClusterLockInitError()
vdsm.storage.exception.ClusterLockInitError: Could not initialize cluster lock: ()
2020-01-02 09:38:33,583-0500 INFO  (jsonrpc/0) [storage.TaskManager.Task] (Task='05c2107a-4d59-48d0-a2f7-0938f051c9ab') aborting: Task is aborted: 'value=Could not initialize cluster lock: () abortedcode=701' (task:1184)

2020-01-02 09:38:33,584-0500 ERROR (jsonrpc/0) [storage.Dispatcher] FINISH createStorageDomain error=Could not initialize cluster lock: () (dispatcher:83)
2020-01-02 09:38:33,584-0500 INFO  (jsonrpc/0) [jsonrpc.JsonRpcServer] RPC call StorageDomain.create failed (error 701) in 18.70 seconds (__init__:312)
2020-01-02 09:38:33,730-0500 INFO  (jsonrpc/2) [vdsm.api] START disconnectStorageServer(domType=1, spUUID='00000000-0000-0000-0000-000000000000', conList=[{'password': '********', 'protocol_version': 'auto', 'port': '', 'iqn': '', 'connection': 'vserver-spider.eng.lab.tlv.redhat.com:/pub/delfassy/nfs1', 'ipv6_enabled': 'false', 'id': 'bf075967-060b-4e60-9b0b-bb170fe073f9', 'user': '', 'tpgt': '1'}], options=None) from=::ffff:192.168.100.1,36452, flow_id=f4f79738-b361-4688-95c5-3454f52b505d, task_id=dd7266ed-69ec-4e5b-9216-850d9db8ea3b (api:48)

Can someone help me with it?

Thanks,

Dana