[ovirt-devel] OST: HE vm does not restart on HC setup

Wed Feb 22 14:22:19 UTC 2017

> On 22 Feb 2017, at 13:53, Simone Tiraboschi <stirabos at redhat.com> wrote:
> 
> 
> 
> On Wed, Feb 22, 2017 at 1:33 PM, Simone Tiraboschi <stirabos at redhat.com <mailto:stirabos at redhat.com>> wrote:
> When ovirt-ha-agent checks the status of the engine VM we get:
> 2017-02-21 22:21:14,738-0500 ERROR (jsonrpc/2) [api] FINISH getStats error=Virtual machine does not exist: {'vmId': u'2ccc0ef0-cc31-45b8-8e91-a78fa4cad671'} (api:69)
> Traceback (most recent call last):
>   File "/usr/lib/python2.7/site-packages/vdsm/common/api.py", line 67, in method
>     ret = func(*args, **kwargs)
>   File "/usr/share/vdsm/API.py", line 335, in getStats
>     vm = self.vm
>   File "/usr/share/vdsm/API.py", line 130, in vm
>     raise exception.NoSuchVM(vmId=self._UUID)
> NoSuchVM: Virtual machine does not exist: {'vmId': u'2ccc0ef0-cc31-45b8-8e91-a78fa4cad671'}
> 
> While in ovirt-ha-agent logs we have:
> MainThread::INFO::2017-02-21 22:21:18,583::hosted_engine::453::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(start_monitoring) Current state UnknownLocalVmState (score: 3400)
> ...
> MainThread::INFO::2017-02-21 22:21:31,199::state_decorators::25::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(check) Unknown local engine vm status no actions taken
> Probably it's a bug or a regression somewhere on master.
> 
> On ovirt-ha-broker side the detection is based on a strict string match on the error message that is expected to be exactly 'Virtual machine does not exist' to set down status otherwise we set unknown status as in this case:
> https://gerrit.ovirt.org/gitweb?p=ovirt-hosted-engine-ha.git;a=blob;f=ovirt_hosted_engine_ha/broker/submonitors/engine_health.py;h=d633cb860b811e84021221771bf706a9a4ac1d63;hb=refs/heads/master#l54 <https://gerrit.ovirt.org/gitweb?p=ovirt-hosted-engine-ha.git;a=blob;f=ovirt_hosted_engine_ha/broker/submonitors/engine_health.py;h=d633cb860b811e84021221771bf706a9a4ac1d63;hb=refs/heads/master#l54>
>  
> Adding Francesco here to understand if something has recently changed there on vdsm side.

That’s not a very robust code handling.
Yes, the text changed, the vm id was added.
And yes, it may change again any time I guess

> 
> 
> 
> On Wed, Feb 22, 2017 at 1:02 PM, Sandro Bonazzola <sbonazzo at redhat.com <mailto:sbonazzo at redhat.com>> wrote:
> Adding Lev
> 
> On Wed, Feb 22, 2017 at 12:59 PM, Sahina Bose <sabose at redhat.com <mailto:sabose at redhat.com>> wrote:
> Hi all,
> 
> On the HC setup, the HE VM is not restarted.
> The agent.log has 
> MainThread::INFO::2017-02-21 22:09:58,022::state_machine::169::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(refresh) Global metadata: {}
> MainThread::INFO::2017-02-21 22:09:58,023::state_machine::177::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(refresh) Local (id 1): {'engine-health': {'reason': 'failed to getVmStats', 'health': 'unknown', 'vm': 'unknown', 'detail': 'unknown'}, 'bridge': True, 'mem-free': 4079.0, 'maintenance': False, 'cpu-load': 0.0491, 'gateway': True}
> ...
> MainThread::INFO::2017-02-21 22:10:29,219::state_decorators::25::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(check) Unknown local engine vm status no actions taken
> MainThread::INFO::2017-02-21 22:10:29,219::brokerlink::111::ovirt_hosted_engine_ha.lib.br <http://ovirt_hosted_engine_ha.lib.br/>okerlink.BrokerLink::(notify) Trying: notify time=1487733029.22 type=state_transition detail=ReinitializeFSM-UnknownLocalVmState hostname='lago-hc-basic-suite-master-host0'
> MainThread::INFO::2017-02-21 22:10:29,317::brokerlink::121::ovirt_hosted_engine_ha.lib.br <http://ovirt_hosted_engine_ha.lib.br/>okerlink.BrokerLink::(notify) Success, was notification of state_transition (ReinitializeFSM-UnknownLocalVmState) sent? ignored
> and the vdsm.log 
> 
> 2017-02-21 22:09:11,962-0500 INFO  (libvirt/events) [virt.vm] (vmId='2ccc0ef0-cc31-45b8-8e91-a78fa4cad671') Changed state to Down: User shut down from within the guest (code=7) (vm:1269)
> 2017-02-21 22:09:11,962-0500 INFO  (libvirt/events) [virt.vm] (vmId='2ccc0ef0-cc31-45b8-8e91-a78fa4cad671') Stopping connection (guestagent:429)
> 
> 2017-02-21 22:09:29,727-0500 ERROR (jsonrpc/4) [api] FINISH getStats error=Virtual machine does not exist: {'vmId': u'2ccc0ef0-cc31-45b8-8e91-a78fa4cad671'} (api:69)
> Traceback (most recent call last):
>   File "/usr/lib/python2.7/site-packages/vdsm/common/api.py", line 67, in method
>     ret = func(*args, **kwargs)
>   File "/usr/share/vdsm/API.py", line 335, in getStats
>     vm = self.vm
>   File "/usr/share/vdsm/API.py", line 130, in vm
>     raise exception.NoSuchVM(vmId=self._UUID)
> NoSuchVM: Virtual machine does not exist: {'vmId': u'2ccc0ef0-cc31-45b8-8e91-a78fa4cad671'}
> 
> 
> What should I be looking for to identify the issue?
> 
> The logs are at http://jenkins.ovirt.org/job/ovirt_master_hc-system-tests/lastCompletedBuild/artifact/exported-artifacts/test_logs/hc-basic-suite-master/post-002_bootstrap.py/lago-hc-basic-suite-master-host0 <http://jenkins.ovirt.org/job/ovirt_master_hc-system-tests/lastCompletedBuild/artifact/exported-artifacts/test_logs/hc-basic-suite-master/post-002_bootstrap.py/lago-hc-basic-suite-master-host0>
> 
> thanks
> sahina
> 
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> 
> -- 
> Sandro Bonazzola
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