Some VMs in status "not responding" in oVirt interface

29 Aug 2015

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Hello,

=20

last Wednesday I wanted to update my oVirt 3.5 hypervisor. It is a =
single Centos 7 server, so I started by suspending the VMs in order to =
set the oVirt engine host to maintenance mode. During the process of =
suspending the VMs the server crashed, kernel panic=E2=80=A6

After restarting the server I installed the updates via yum an restarted =
the server again. Afterwards, all the VMs could be started again. Some =
hours later my monitoring system registered some unresponsive hosts, I =
had a look in the oVirt interface, 3 of the VMs were in the state =
=E2=80=9Cnot responding=E2=80=9D, marked by a question mark.=20

I tried to shut down the VMs, but oVirt wasn=E2=80=99t able to do so. I =
tried to reset the status in the database with the sql statement

=20

update vm_dynamic set status =3D 0 where vm_guid =3D (select vm_guid =
from vm_static where vm_name =3D 'MYVMNAME');

=20

but that didn=E2=80=99t help, either. Only rebooting the whole =
hypervisor helped=E2=80=A6 afterwards everything worked again. But only =
for a few hours, then one of the VMs entered the =E2=80=9Cnot =
responding=E2=80=9D state again=E2=80=A6 again only a reboot helped. =
Yesterday it happened again:

=20

2015-08-28 17:44:22,664 INFO  =
[org.ovirt.engine.core.vdsbroker.VdsUpdateRunTimeInfo] =
(DefaultQuartzScheduler_Worker-60) [4ef90b12] VM DC =
0f3d1f06-e516-48ce-aa6f-7273c33d3491 moved from Up --> NotResponding

2015-08-28 17:44:22,692 WARN  =
[org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] =
(DefaultQuartzScheduler_Worker-60) [4ef90b12] Correlation ID: null, Call =
Stack: null, Custom Event ID: -1, Message: VM DC is not responding.

=20

Does anybody know what I can do? Where should I have a look? Hints are =
greatly appreciated!

=20

Thanks,

Christian

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link=3D"#0563C1" vlink=3D"#954F72"><div class=3DWordSection1><p =
class=3DMsoNormal><span lang=3DEN-US>Hello,<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US><o:p> </o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US>last Wednesday I wanted to update =
my oVirt 3.5 hypervisor. It is a single Centos 7 server, so I started by =
suspending the VMs in order to set the oVirt engine host to maintenance =
mode. During the process of suspending the VMs the server crashed, =
kernel panic=E2=80=A6<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US>After restarting the server I installed the updates via yum =
an restarted the server again. Afterwards, all the VMs could be started =
again. Some hours later my monitoring system registered some =
unresponsive hosts, I had a look in the oVirt interface, 3 of the VMs =
were in the state =E2=80=9Cnot responding=E2=80=9D, marked by a question =
mark. <o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US>I =
tried to shut down the VMs, but oVirt wasn=E2=80=99t able to do so. I =
tried to reset the status in the database with the sql =
statement<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US><o:p> </o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US>update vm_dynamic set status =3D 0 where vm_guid =3D =
(select vm_guid from vm_static where vm_name =3D =
'MYVMNAME');<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US><o:p> </o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US>but that didn=E2=80=99t help, either. Only rebooting the =
whole hypervisor helped=E2=80=A6 afterwards everything worked again. But =
only for a few hours, then one of the VMs entered the =E2=80=9Cnot =
responding=E2=80=9D state again=E2=80=A6 again only a reboot helped. =
Yesterday it happened again:<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US><o:p> </o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US>2015-08-28 17:44:22,664 INFO  =
[org.ovirt.engine.core.vdsbroker.VdsUpdateRunTimeInfo] =
(DefaultQuartzScheduler_Worker-60) [4ef90b12] VM DC =
0f3d1f06-e516-48ce-aa6f-7273c33d3491 moved from Up --> =
NotResponding<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US>2015-08-28 17:44:22,692 WARN  =
[org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] =
(DefaultQuartzScheduler_Worker-60) [4ef90b12] Correlation ID: null, Call =
Stack: null, Custom Event ID: -1, Message: VM DC is not =
responding.<o:p></o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US><o:p> </o:p></span></p><p class=3DMsoNormal><span =
lang=3DEN-US>Does anybody know what I can do? Where should I have a =
look? Hints are greatly appreciated!<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US><o:p> </o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US>Thanks,<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
lang=3DEN-US>Christian<o:p></o:p></span></p></div></body></html>
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Christian Hailer

Yaniv Dary

Christian Hailer

Christian Hailer

Christian Hailer

Daniel Helgenberger

Christian Hailer

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