[ovirt-users] Hosted-Engine HA problem

Fri Oct 31 02:53:29 UTC 2014

Hi guys,

these logs appear on both hosts just like the result of --vm-status. tried to tcpdump on ovirt hosts and gluster nodes but only packets exchange with my monitoring VM(zabbix) appeared.

agent.log
    new_data = self.refresh(self._state.data)
  File "/usr/lib/python2.6/site-packages/ovirt_hosted_engine_ha/agent/state_machine.py", line 77, in refresh
    stats.update(self.hosted_engine.collect_stats())
  File "/usr/lib/python2.6/site-packages/ovirt_hosted_engine_ha/agent/hosted_engine.py", line 662, in collect_stats
    constants.SERVICE_TYPE)
  File "/usr/lib/python2.6/site-packages/ovirt_hosted_engine_ha/lib/brokerlink.py", line 171, in get_stats_from_storage
    result = self._checked_communicate(request)
  File "/usr/lib/python2.6/site-packages/ovirt_hosted_engine_ha/lib/brokerlink.py", line 199, in _checked_communicate
    .format(message or response))
RequestError: Request failed: <type 'exceptions.OSError'>

broker.log
  File "/usr/lib/python2.6/site-packages/ovirt_hosted_engine_ha/broker/listener.py", line 165, in handle
    response = "success " + self._dispatch(data)
  File "/usr/lib/python2.6/site-packages/ovirt_hosted_engine_ha/broker/listener.py", line 261, in _dispatch
    .get_all_stats_for_service_type(**options)
  File "/usr/lib/python2.6/site-packages/ovirt_hosted_engine_ha/broker/storage_broker.py", line 41, in get_all_stats_for_service_type
    d = self.get_raw_stats_for_service_type(storage_dir, service_type)
  File "/usr/lib/python2.6/site-packages/ovirt_hosted_engine_ha/broker/storage_broker.py", line 74, in get_raw_stats_for_service_type
    f = os.open(path, direct_flag | os.O_RDONLY)
OSError: [Errno 24] Too many open files: '/rhev/data-center/mnt/gluster1:_engine/6eb220be-daff-4785-8f78-111cc24139c4/ha_agent/hosted-engine.metadata'
Thread-38160::INFO::2014-10-31 10:28:37,989::listener::184::ovirt_hosted_engine_ha.broker.listener.ConnectionHandler::(handle) Connection closed
Thread-38161::INFO::2014-10-31 10:28:53,656::listener::134::ovirt_hosted_engine_ha.broker.listener.ConnectionHandler::(setup) Connection established
Thread-38161::ERROR::2014-10-31 10:28:53,657::listener::190::ovirt_hosted_engine_ha.broker.listener.ConnectionHandler::(handle) Error handling request, data: 'get-stats storage_dir=/rhev/data-center/mnt/gluster1:_engine/6eb220be-daff-4785-8f78-111cc24139c4/ha_agent service_type=hosted-engine'
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/ovirt_hosted_engine_ha/broker/listener.py", line 165, in handle
    response = "success " + self._dispatch(data)
  File "/usr/lib/python2.6/site-packages/ovirt_hosted_engine_ha/broker/listener.py", line 261, in _dispatch
    .get_all_stats_for_service_type(**options)
  File "/usr/lib/python2.6/site-packages/ovirt_hosted_engine_ha/broker/storage_broker.py", line 41, in get_all_stats_for_service_type
    d = self.get_raw_stats_for_service_type(storage_dir, service_type)
  File "/usr/lib/python2.6/site-packages/ovirt_hosted_engine_ha/broker/storage_broker.py", line 74, in get_raw_stats_for_service_type
    f = os.open(path, direct_flag | os.O_RDONLY)
OSError: [Errno 24] Too many open files: '/rhev/data-center/mnt/gluster1:_engine/6eb220be-daff-4785-8f78-111cc24139c4/ha_agent/hosted-engine.metadata'
Thread-38161::INFO::2014-10-31 10:28:53,658::listener::184::ovirt_hosted_engine_ha.broker.listener.ConnectionHandler::(handle) Connection closed

Thanks,
Jaicel

----- Original Message -----
From: "Niels de Vos" <ndevos at redhat.com>
To: "Vijay Bellur" <vbellur at redhat.com>
Cc: "Jiri Moskovcak" <jmoskovc at redhat.com>, "Jaicel R. Sabonsolin" <jaicel at asti.dost.gov.ph>, users at ovirt.org, "Gluster Devel" <gluster-devel at gluster.org>
Sent: Friday, October 31, 2014 4:11:25 AM
Subject: Re: [ovirt-users] Hosted-Engine HA problem

On Thu, Oct 30, 2014 at 09:07:24PM +0530, Vijay Bellur wrote:
> On 10/30/2014 06:45 PM, Jiri Moskovcak wrote:
> >On 10/30/2014 09:22 AM, Jaicel R. Sabonsolin wrote:
> >>Hi Guys,
> >>
> >>I need help with my ovirt Hosted-Engine HA setup. I am running on 2
> >>ovirt hosts and 2 gluster nodes with replicated volumes. i already have
> >>VMs running on my hosts and they can migrate normally once i for example
> >>power off the host that they are running on. the problem is that the
> >>engine can't migrate once i switch off the host that hosts the engine.
> >>
> >>    oVirt        3.4.3-1.el6
> >>    KVM         0.12.1.2 - 2.415.el6_5.10
> >>    LIBVIRT   libvirt-0.10.2-29.el6_5.9
> >>    VDSM      vdsm-4.14.17-0.el6
> >>
> >>
> >>right now, i have this result from hosted-engine --vm-status.
> >>
> >>       File "/usr/lib64/python2.6/runpy.py", line 122, in
> >>    _run_module_as_main
> >>         "__main__", fname, loader, pkg_name)
> >>       File "/usr/lib64/python2.6/runpy.py", line 34, in _run_code
> >>         exec code in run_globals
> >>       File
> >>
> >>"/usr/lib/python2.6/site-packages/ovirt_hosted_engine_setup/vm_status.py",
> >>
> >>    line 111, in <module>
> >>         if not status_checker.print_status():
> >>       File
> >>
> >>"/usr/lib/python2.6/site-packages/ovirt_hosted_engine_setup/vm_status.py",
> >>
> >>    line 58, in print_status
> >>         all_host_stats = ha_cli.get_all_host_stats()
> >>       File
> >>
> >>"/usr/lib/python2.6/site-packages/ovirt_hosted_engine_ha/client/client.py",
> >>
> >>    line 137, in get_all_host_stats
> >>         return self.get_all_stats(self.StatModes.HOST)
> >>       File
> >>
> >>"/usr/lib/python2.6/site-packages/ovirt_hosted_engine_ha/client/client.py",
> >>
> >>    line 86, in get_all_stats
> >>         constants.SERVICE_TYPE)
> >>       File
> >>
> >>"/usr/lib/python2.6/site-packages/ovirt_hosted_engine_ha/lib/brokerlink.py",
> >>
> >>    line 171, in get_stats_from_storage
> >>         result = self._checked_communicate(request)
> >>       File
> >>
> >>"/usr/lib/python2.6/site-packages/ovirt_hosted_engine_ha/lib/brokerlink.py",
> >>
> >>    line 199, in _checked_communicate
> >>         .format(message or response))
> >>    ovirt_hosted_engine_ha.lib.exceptions.RequestError: Request failed:
> >>    <type 'exceptions.OSError'>
> >>
> >>
> >>restarting ha-broker and ha-agent normalizes the status but eventually
> >>it would become "false" and then return to the result above. hope you
> >>guys could help me with this.
> >>
> >
> >Hi Jaicel,
> >please attach agent.log and broker.log from the host where you trying to
> >run hosted-engine --vm-status. I have a feeling that you ran into a
> >known problem on gluster - stalled file descriptor, in that case the
> >only known solution at this time is to restart the broker & agent as you
> >have already found out.
> >
> 
> Adding Niels and gluster-devel to troubleshoot from Gluster NFS perspective.

I'd welcome any details on this "stalled file descriptor" problem. Is
there a bug filed with some details like logs, sysrq-t and maybe even
tcpdumps? If there is an easy way to reproduce this behaviour, I can
surely look into it and hopefully come up with some advise or fix.

Thanks,
Niels