Re: [ovirt-users] Highly Available in 3.6 and USB support
Hi Styve,
On Mon, Nov 23, 2015 at 3:10 PM, jaumotte, styve <
s.jaumotte(a)maine-et-loire.fr> wrote:
Hi everybody,
After testing some features on 3.5, we are planning to finaly go to 3.6.
Some problems still exist.
A major problem still remain on the « Highly Available » option on vm wich
doesn’t work. I had a cluster with 4 engines and a simple vm. When I start
a poweroff from the node where this vm is living, the node is shutting down
but my vm doesn’t restart on another node of the cluster.
Do you have a fencing agent configured for your host? It is configureable
under 'Edit Host'->'Power Management'. If there is no fencing agent
configured, the engine can not make sure that the host is really off when
it is non responsive. To avoid disk corruptions without a fencing agent, it
does nothing. You can find more about HA here [1]. About fencing here [2].
The power managment of all the node are correctly configure. The HA feature
of then hosted-engine is working well (except it is very long).
Glad to hear that this is working. Regarding the (sometimes long)
downtimes, you can find some numbers here [3].
Another problem consist of passing usb host device to the virtual machine.
We’ve got some specials usb keys for activating old application and we need
to attach this key to vm. At first, I try with standard usb mass storage
key to test this approach. I can’t start virtual machine when I add usb
device, I always have the message « The host … did not satisfy internal
filter HostDevice because it does not support host device passthrough ».
Have any idea where I can find an HowTo to help me ?
Tanks for your help,
SJ
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Best regards,
Roman
[1]
http://www.ovirt.org/OVirt_Administration_Guide#.E2.81.A0Improving_Uptime...
<http://www.ovirt.org/OVirt_Administration_Guide#%E2%81%A0Improving_Uptime...
<http://www.ovirt.org/OVirt_Administration_Guide#%E2%81%A0Improving_Uptime...
http://www.ovirt.org/OVirt_Administration_Guide#Host_Resilience
[3]
http://www.ovirt.org/Hosted_Engine_Howto#What_is_the_expected_downtime_in...
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