12:28 p.m.
Hi
I just upgraded my oVirt installation from 4.4.10 to 4.5.1.2. The upgrade went through
without any errors and most things seem to work but i have one critical problem now.
Somehow it does not evaluate the correct number of CPU available on the hypervisor and
blocks the start of a VM (except for the engine). The problem I only have on the
hypervisor which has the engine deployed. I have three hypervisors, but only one has the
engine installed. This hypervisor is also in a seperate cluster.
After the upgrade, on the hypervisor which has the engine installed, I can't start a
VM via the oVirt Manager. I can start the engine via "hosted-engine --vm-start"
but if I try to start any other VM it fails with this Error:
https://imgur.com/7lbGb8v
--------------------------------------------------------------------------------------------------------
Operation Canceled
Error while executing action:
Razor:
Cannot run VM. There is no host that satisfies current scheduling constraints. See below
for details:
The host venge did not satisfy internal filter CPU because it has an insufficient amount
of CPU cores to run the VM.
--------------------------------------------------------------------------------------------------------
I did not change any specs for the VM and even if I reduce the VM to only use 1 core it
fails with the error above.
This are the specs of my hypervisor, it has 2 cores with 2 threads:
https://imgur.com/rbJnqP3
This is the ovirt version installed
https://imgur.com/4LLTVFN
Does someone know how to fix this?
Regards
4:34 p.m.
New subject: Can't start VM because host has insufficient amount of CPU cores
On Tue, Jun 28, 2022 at 8:29 PM Ramon Clematide <ramon(a)clematide.ch> wrote:
Hi
I just upgraded my oVirt installation from 4.4.10 to 4.5.1.2. The upgrade went through
without any errors and most things seem to work but i have one critical problem now.
Somehow it does not evaluate the correct number of CPU available on the hypervisor and
blocks the start of a VM (except for the engine). The problem I only have on the
hypervisor which has the engine deployed. I have three hypervisors, but only one has the
engine installed. This hypervisor is also in a seperate cluster.
After the upgrade, on the hypervisor which has the engine installed, I can't start a
VM via the oVirt Manager. I can start the engine via "hosted-engine --vm-start"
but if I try to start any other VM it fails with this Error:
https://imgur.com/7lbGb8v
--------------------------------------------------------------------------------------------------------
Operation Canceled
Error while executing action:
Razor:
Cannot run VM. There is no host that satisfies current scheduling constraints. See below
for details:
The host venge did not satisfy internal filter CPU because it has an insufficient amount
of CPU cores to run the VM.
--------------------------------------------------------------------------------------------------------
I did not change any specs for the VM and even if I reduce the VM to only use 1 core it
fails with the error above.
This are the specs of my hypervisor, it has 2 cores with 2 threads:
https://imgur.com/rbJnqP3
This is the ovirt version installed
https://imgur.com/4LLTVFN
Does someone know how to fix this?
Sounds like https://bugzilla.redhat.com/2095259 but since the fix for
that one is included in the version you use, I assume that's a
different issue
Lucia, can you please follow up on this?
Regards
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2:43 a.m.
New subject: Can't start VM because host has insufficient amount of CPU cores
Hi Ramon,
Could you please share the following details?
- what is the cluster's countThreadsAsCores setting (Edit Cluster dialog
-> Optimization tab)
- what is the VM's CPU topology for both VMs - running and failed (Edit
VM -> System tab -> Advanced parameters)
- a screenshot of the host's CPU topology (Host detail -> Host devices
tab -> View CPU Pinning button)
- what is in the engine.log (you need to enable DEBUG messages to see
details why the host was filtered out)
Thank you,
Lucia
On Tue, Jun 28, 2022 at 11:35 PM Arik Hadas <ahadas(a)redhat.com> wrote:
On Tue, Jun 28, 2022 at 8:29 PM Ramon Clematide
<ramon(a)clematide.ch>
wrote:
>
> Hi
>
> I just upgraded my oVirt installation from 4.4.10 to 4.5.1.2. The
upgrade went through without any errors and most things seem to work but i
have one critical problem now. Somehow it does not evaluate the correct
number of CPU available on the hypervisor and blocks the start of a VM
(except for the engine). The problem I only have on the hypervisor which
has the engine deployed. I have three hypervisors, but only one has the
engine installed. This hypervisor is also in a seperate cluster.
>
> After the upgrade, on the hypervisor which has the engine installed, I
can't start a VM via the oVirt Manager. I can start the engine via
"hosted-engine --vm-start" but if I try to start any other VM it fails with
this Error:
>
> https://imgur.com/7lbGb8v
>
>
--------------------------------------------------------------------------------------------------------
> Operation Canceled
> Error while executing action:
>
> Razor:
> Cannot run VM. There is no host that satisfies current scheduling
constraints. See below for details:
> The host venge did not satisfy internal filter CPU because it has an
insufficient amount of CPU cores to run the VM.
>
--------------------------------------------------------------------------------------------------------
>
> I did not change any specs for the VM and even if I reduce the VM to
only use 1 core it fails with the error above.
>
> This are the specs of my hypervisor, it has 2 cores with 2 threads:
>
> https://imgur.com/rbJnqP3
>
> This is the ovirt version installed
>
> https://imgur.com/4LLTVFN
>
> Does someone know how to fix this?
Sounds like https://bugzilla.redhat.com/2095259 but since the fix for
that one is included in the version you use, I assume that's a
different issue
Lucia, can you please follow up on this?
>
> Regards
> _______________________________________________
> Users mailing list -- users(a)ovirt.org
> To unsubscribe send an email to users-leave(a)ovirt.org
> Privacy Statement: https://www.ovirt.org/privacy-policy.html
> oVirt Code of Conduct:
https://www.ovirt.org/community/about/community-guidelines/
> List Archives:
https://lists.ovirt.org/archives/list/users@ovirt.org/message/E3LAOVNSKKC...
4:43 a.m.
New subject: Can't start VM because host has insufficient amount of CPU cores
Hi Lucia
Thank you. countThreadsAsCores setting was off. After turning it on, I could start the
VM.
Host CPU pinning: https://imgur.com/RXNRMOq
VM CPU topology: https://imgur.com/UmQUVid
But with countThreadsAsCores=off, it blocked the VM start even after I reduced the VM
topology to 1 socket / 1 CPU / 1 thread
Regards Ramon
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3 comments
3 participants
participants (3)
-
Arik Hadas -
Lucia Jelinkova -
Ramon Clematide