It sure if this is the same bug I hit but check ownership of the cam images. There’s a bug in 4.3 upgrade that changes ownership to root and causes vms to not start until you change back to vdsm 

On Wed, Mar 6, 2019 at 4:57 AM Shawn Southern <shawn.southern@entegrus.com> wrote:
After running 'hosted-engine --vm-start', the status of the hosted engine VM is:

conf_on_shared_storage             : True
Status up-to-date                  : True
Hostname                           : ovirtnode-01
Host ID                            : 3
Engine status                      : {"reason": "bad vm status", "health": "bad", "vm": "down_unexpected", "detail": "Down"}
Score                              : 0
stopped                            : False
Local maintenance                  : False
crc32                              : 7e3db850
local_conf_timestamp               : 3509
Host timestamp                     : 3508
Extra metadata (valid at timestamp):
        metadata_parse_version=1
        metadata_feature_version=1
        timestamp=3508 (Tue Mar  5 16:03:30 2019)
        host-id=3
        score=0
        vm_conf_refresh_time=3509 (Tue Mar  5 16:03:31 2019)
        conf_on_shared_storage=True
        maintenance=False
        state=EngineUnexpectedlyDown
        stopped=False
        timeout=Wed Dec 31 20:05:37 1969


The /var/log/libvirt/qemu/HostedEngine.log has no entries since the hosted engine VM was rebooted.

/var/log/ovirt-hosted-engine-ha/agent.log:
MainThread::ERROR::2019-03-05 16:07:31,916::config_ovf::42::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine.config.vm::(_get_vm_conf_content_from_ovf_store) Failed scanning for OVF_STORE due to Command Volume.getInfo with args {'storagepoolID': '00000000-0000-0000-0000-000000000000', 'storagedomainID': '79376c46-b80c-4c44-bbb1-80c0714a4b52', 'volumeID': u'687e9c0d-e988-4f76-89ff-931685acdf76', 'imageID': u'48ee766b-185d-4928-a046-b048d65af2a6'} failed:
(code=201, message=Volume does not exist: (u'687e9c0d-e988-4f76-89ff-931685acdf76',))
MainThread::ERROR::2019-03-05 16:07:31,916::config_ovf::84::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine.config.vm::(_get_vm_conf_content_from_ovf_store) Unable to identify the OVF_STORE volume, falling back to initial vm.conf. Please ensure you already added your first data domain for regular VMs
MainThread::INFO::2019-03-05 16:07:31,971::hosted_engine::493::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_monitoring_loop) Current state EngineUnexpectedlyDown (score: 0)
MainThread::ERROR::2019-03-05 16:07:42,304::config_ovf::42::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine.config.vm::(_get_vm_conf_content_from_ovf_store) Failed scanning for OVF_STORE due to Command Volume.getInfo with args {'storagepoolID': '00000000-0000-0000-0000-000000000000', 'storagedomainID': '79376c46-b80c-4c44-bbb1-80c0714a4b52', 'volumeID': u'687e9c0d-e988-4f76-89ff-931685acdf76', 'imageID': u'48ee766b-185d-4928-a046-b048d65af2a6'} failed:
(code=201, message=Volume does not exist: (u'687e9c0d-e988-4f76-89ff-931685acdf76',))
MainThread::ERROR::2019-03-05 16:07:42,305::config_ovf::84::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine.config.vm::(_get_vm_conf_content_from_ovf_store) Unable to identify the OVF_STORE volume, falling back to initial vm.conf. Please ensure you already added your first data domain for regular VMs
MainThread::INFO::2019-03-05 16:07:42,365::hosted_engine::493::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_monitoring_loop) Current state EngineUnexpectedlyDown (score: 0)
MainThread::ERROR::2019-03-05 16:07:51,791::config_ovf::42::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine.config.vm::(_get_vm_conf_content_from_ovf_store) Failed scanning for OVF_STORE due to Command Volume.getInfo with args {'storagepoolID': '00000000-0000-0000-0000-000000000000', 'storagedomainID': '79376c46-b80c-4c44-bbb1-80c0714a4b52', 'volumeID': u'687e9c0d-e988-4f76-89ff-931685acdf76', 'imageID': u'48ee766b-185d-4928-a046-b048d65af2a6'} failed:
(code=201, message=Volume does not exist: (u'687e9c0d-e988-4f76-89ff-931685acdf76',))
MainThread::ERROR::2019-03-05 16:07:51,792::config_ovf::84::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine.config.vm::(_get_vm_conf_content_from_ovf_store) Unable to identify the OVF_STORE volume, falling back to initial vm.conf. Please ensure you already added your first data domain for regular VMs
MainThread::INFO::2019-03-05 16:07:51,850::hosted_engine::493::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_monitoring_loop) Current state EngineUnexpectedlyDown (score: 0)
MainThread::INFO::2019-03-05 16:08:01,868::states::684::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(consume) Engine down, local host does not have best score
MainThread::ERROR::2019-03-05 16:08:02,196::config_ovf::42::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine.config.vm::(_get_vm_conf_content_from_ovf_store) Failed scanning for OVF_STORE due to Command Volume.getInfo with args {'storagepoolID': '00000000-0000-0000-0000-000000000000', 'storagedomainID': '79376c46-b80c-4c44-bbb1-80c0714a4b52', 'volumeID': u'687e9c0d-e988-4f76-89ff-931685acdf76', 'imageID': u'48ee766b-185d-4928-a046-b048d65af2a6'} failed:
(code=201, message=Volume does not exist: (u'687e9c0d-e988-4f76-89ff-931685acdf76',))
MainThread::ERROR::2019-03-05 16:08:02,197::config_ovf::84::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine.config.vm::(_get_vm_conf_content_from_ovf_store) Unable to identify the OVF_STORE volume, falling back to initial vm.conf. Please ensure you already added your first data domain for regular VMs
MainThread::INFO::2019-03-05 16:08:02,286::states::699::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(score) Score is 0 due to unexpected vm shutdown at Tue Mar  5 16:01:19 2019
MainThread::INFO::2019-03-05 16:08:02,286::hosted_engine::493::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_monitoring_loop) Current state EngineUnexpectedlyDown (score: 0)
MainThread::ERROR::2019-03-05 16:08:11,697::config_ovf::42::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine.config.vm::(_get_vm_conf_content_from_ovf_store) Failed scanning for OVF_STORE due to Command Volume.getInfo with args {'storagepoolID': '00000000-0000-0000-0000-000000000000', 'storagedomainID': '79376c46-b80c-4c44-bbb1-80c0714a4b52', 'volumeID': u'687e9c0d-e988-4f76-89ff-931685acdf76', 'imageID': u'48ee766b-185d-4928-a046-b048d65af2a6'} failed:
(code=201, message=Volume does not exist: (u'687e9c0d-e988-4f76-89ff-931685acdf76',))
MainThread::ERROR::2019-03-05 16:08:11,697::config_ovf::84::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine.config.vm::(_get_vm_conf_content_from_ovf_store) Unable to identify the OVF_STORE volume, falling back to initial vm.conf. Please ensure you already added your first data domain for regular VMs
MainThread::INFO::2019-03-05 16:08:11,752::hosted_engine::493::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_monitoring_loop) Current state EngineUnexpectedlyDown (score: 0)

I expect the issue is this:
MainThread::ERROR::2019-03-05 16:08:11,697::config_ovf::42::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine.config.vm::(_get_vm_conf_content_from_ovf_store) Failed scanning for OVF_STORE due to Command Volume.getInfo with args {'storagepoolID': '00000000-0000-0000-0000-000000000000', 'storagedomainID': '79376c46-b80c-4c44-bbb1-80c0714a4b52', 'volumeID': u'687e9c0d-e988-4f76-89ff-931685acdf76', 'imageID': u'48ee766b-185d-4928-a046-b048d65af2a6'} failed:
(code=201, message=Volume does not exist: (u'687e9c0d-e988-4f76-89ff-931685acdf76',))

Where do I go from here?
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