Created attachment 1339322 [details]
logs from engine and hypervisor

Description of problem:
HA VM power off, with lease on NFS storage, fails on the following exception after it has been paused after disconnection and connection restore between the host and the storage where the lease and the VM disk reside.

2017-10-16 14:44:31,471+0300 ERROR (jsonrpc/7) [api] FINISH destroy error=VM '12f923ff-7a3e-480a-b67c-dbc559770ddb' was not defined yet or was undefined (api:127)
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/vdsm/common/api.py", line 117, in method
    ret = func(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/vdsm/API.py", line 312, in destroy
    res = self.vm.destroy(gracefulAttempts)
  File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 4944, in destroy
    self._deleteVm()
  File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 4933, in _deleteVm
    self._undefine_domain()
  File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 2259, in _undefine_domain
    self._dom.undefine()
  File "/usr/lib/python2.7/site-packages/vdsm/virt/virdomain.py", line 47, in __getattr__
    % self.vmid)
NotConnectedError: VM '12f923ff-7a3e-480a-b67c-dbc559770ddb' was not defined yet or was undefined
2017-10-16 14:44:31,478+0300 INFO  (jsonrpc/7) [api.virt] FINISH destroy return={'status': {'message': 'General Exception: ("VM \'12f923ff-7a3e-480a-b67c-dbc559770ddb\' was not defined yet 
or was undefined",)', 'code': 100}} from=::ffff:10.35.161.182,35806, flow_id=cf15a7af-c06d-4d7b-a007-3e68cd57b4a6 (api:52)



Version-Release number of selected component (if applicable):
vdsm-4.20.3-175.git76c0aff.el7.centos.x86_64
libvirt-daemon-3.2.0-14.el7_4.3.x86_64
sanlock-3.5.0-1.el7.x86_64
ovirt-engine-4.2.0-0.0.master.20171013142622.git15e767c.el7.centos.noarch

How reproducible:
Always on RHV automation test case https://polarion.engineering.redhat.com/polarion/redirect/project/RHEVM3/workitem?id=RHEVM-17621

Steps to Reproduce:
1. Create new HA VM with storage lease
2. Start the VM
3. Block connection from all hosts in the DC to the storage domain.
4. Block connection from engine to the host -> VM will become UNKNOWN and
won't failover to another host
5. Power off the VM 

Actual results:
Power off VM fails on the mentioned exception

Expected results:
VM power off should succeed

Additional info:

engine.log:

b4a6] Command 'DestroyVDSCommand(HostName = host_mixed_2, DestroyVmVDSCommandParameters:{hostId='3ebf2639-0e23-4d8f-85da-cdb4d427d30d', vmId='12f923ff-7a3e-480a-b67c-dbc559770ddb', secondsT
oWait='0', gracefully='false', reason='', ignoreNoVm='false'})' execution failed: VDSGenericException: VDSErrorException: Failed to DestroyVDS, error = General Exception: ("VM '12f923ff-7a3
e-480a-b67c-dbc559770ddb' was not defined yet or was undefined",), code = 100


libvirtd.log from around the same time:

2017-10-16 11:44:22.789+0000: 1476: error : qemuOpenFileAs:3176 : Failed to open file '/rhev/data-center/mnt/yellow-vdsb.qa.lab.tlv.redhat.com:_Storage__NFS_storage__local__ge2__nfs__2/e552
5ed6-0970-49da-b022-5d9c342d928b/images/97bfb9f6-850a-4bc7-97b6-2ed78e88a54d/c5c20431-d79d-4b95-b8b2-6685211716bb': No such file or directory
2017-10-16 11:44:22.789+0000: 1476: error : qemuDomainStorageOpenStat:11478 : cannot stat file '/rhev/data-center/mnt/yellow-vdsb.qa.lab.tlv.redhat.com:_Storage__NFS_storage__local__ge2__nf
s__2/e5525ed6-0970-49da-b022-5d9c342d928b/images/97bfb9f6-850a-4bc7-97b6-2ed78e88a54d/c5c20431-d79d-4b95-b8b2-6685211716bb': Bad file descriptor