Dear oVirt,

While working on a procedure to get the NFS v4 mount from Netapp, working on oVIrt, following steps came out to be the way to go in regards of setting it up for oVIrt SHE and VM Guests:

• mkdir /mnt/rhevstore
• mount -t nfs 10.20.30.40:/ovirt_hosted_engine /mnt/rhevstore
• chown -R  36.36 /mnt/rhevstore
• chmod -R 755 /mnt/rhevstore
• umount /mnt/rhevstore

This works fine, and it needs to be executed on each Hypervisor, before its provisioned into oVirt.

However, just today I have discovered that command chmod -R 755 /mnt/rhevstore, if executed on new to be added Hypervisor, after oVirt is already running, it brings the oVirt Engine into broken state.

The moment I executed the above on 3^rd Hypervisor, before provisioning it into oVirt, following occurred:

• Engine threw following error:
• 2019-08-19 13:16:31,425Z ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.SpmStatusVDSCommand] (EE-ManagedThreadFactory-engineScheduled-Thread-82) [] Failed in 'SpmStatusVDS' method
• Connection was lost:
• packet_write_wait: Connection to 10.210.11.10 port 22: Broken pipe
• And VDSM on SHE Hosting hypervisor started logging errors like:
• 2019-08-19 15:00:52,340+0000 INFO  (jsonrpc/0) [jsonrpc.JsonRpcServer] RPC call Host.getAllVmStats succeeded in 0.00 seconds (__init__:312)
• 2019-08-19 15:00:53,865+0000 WARN  (vdsm.Scheduler) [Executor] Worker blocked: <Worker name=periodic/2 running <Task <Operation action=<vdsm.virt.sampling.HostMonitor object at 0x7f59442c3d50> at 0x7f59442c3b90> timeout=15, duration=225.00 at 0x7f592476df90> task#=578 at 0x7f59442ef910>, traceback:
• File: "/usr/lib64/python2.7/threading.py", line 785, in __bootstrap
•   self.__bootstrap_inner()
• File: "/usr/lib64/python2.7/threading.py", line 812, in __bootstrap_inner
•   self.run()
• File: "/usr/lib64/python2.7/threading.py", line 765, in run
•   self.__target(*self.__args, **self.__kwargs)
• File: "/usr/lib/python2.7/site-packages/vdsm/common/concurrent.py", line 195, in run
•   ret = func(*args, **kwargs)
• File: "/usr/lib/python2.7/site-packages/vdsm/executor.py", line 301, in _run
•   self._execute_task()
• File: "/usr/lib/python2.7/site-packages/vdsm/executor.py", line 315, in _execute_task
•   task()
• File: "/usr/lib/python2.7/site-packages/vdsm/executor.py", line 391, in __call__
•   self._callable()
• File: "/usr/lib/python2.7/site-packages/vdsm/virt/periodic.py", line 186, in __call__
•   self._func()
• File: "/usr/lib/python2.7/site-packages/vdsm/virt/sampling.py", line 481, in __call__
•   stats = hostapi.get_stats(self._cif, self._samples.stats())
• File: "/usr/lib/python2.7/site-packages/vdsm/host/api.py", line 79, in get_stats
•   ret['haStats'] = _getHaInfo()
• File: "/usr/lib/python2.7/site-packages/vdsm/host/api.py", line 177, in _getHaInfo
•   stats = instance.get_all_stats()
• File: "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/client/client.py", line 94, in get_all_stats
•   stats = broker.get_stats_from_storage()
• File: "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/lib/brokerlink.py", line 143, in get_stats_from_storage
•   result = self._proxy.get_stats()
• File: "/usr/lib64/python2.7/xmlrpclib.py", line 1233, in __call__
•   return self.__send(self.__name, args)
• File: "/usr/lib64/python2.7/xmlrpclib.py", line 1591, in __request
•   verbose=self.__verbose
• File: "/usr/lib64/python2.7/xmlrpclib.py", line 1273, in request
•   return self.single_request(host, handler, request_body, verbose)
• File: "/usr/lib64/python2.7/xmlrpclib.py", line 1303, in single_request
•   response = h.getresponse(buffering=True)
• File: "/usr/lib64/python2.7/httplib.py", line 1113, in getresponse
•   response.begin()
• File: "/usr/lib64/python2.7/httplib.py", line 444, in begin
•   version, status, reason = self._read_status()
• File: "/usr/lib64/python2.7/httplib.py", line 400, in _read_status
•   line = self.fp.readline(_MAXLINE + 1)
• File: "/usr/lib64/python2.7/socket.py", line 476, in readline
•   data = self._sock.recv(self._rbufsize) (executor:363)
• 2019-08-19 15:00:54,103+0000 INFO  (jsonrpc/1) [jsonrpc.JsonRpcServer] RPC call Host.ping2 succeeded in 0.00 seconds (__init__:312)

I am unable to boot the Engine VM – it end up in Status ForceStop

Hosted-engine –vm-status shows:

[root@ovirt-sj-02 ~]# hosted-engine --vm-status

The hosted engine configuration has not been retrieved from shared storage. Please ensure that ovirt-ha-agent is running and the storage server is reachable.

But, storage is mounted and reachable, as well as ovirt-ha-agent running:

[root@ovirt-sj-02 ~]# systemctl status ovirt-ha-agent

● ovirt-ha-agent.service - oVirt Hosted Engine High Availability Monitoring Agent

   Loaded: loaded (/usr/lib/systemd/system/ovirt-ha-agent.service; enabled; vendor preset: disabled)

   Active: active (running) since Mon 2019-08-19 14:57:07 UTC; 23s ago

Main PID: 43388 (ovirt-ha-agent)

    Tasks: 2

   CGroup: /system.slice/ovirt-ha-agent.service

           └─43388 /usr/bin/python /usr/share/ovirt-hosted-engine-ha/ovirt-ha-agent

Can somebody help me with what to do?

— — —
Met vriendelijke groet / Kind regards,

Marko Vrgotic