Re: [Engine-devel] qemu machine type / datacenter machine version
On 04/06/2012 06:00 AM, Itamar Heim wrote:
>>
>>
>> check this and reply to it:
>> http://lists.ovirt.org/pipermail/users/2012-March/001439.html
>
> Since the topic was brought up, I have a long going request that oVirt
> will enable users to run multiple machine type versions on the same host
> (using the same qemu binary but providing a different -M compatibility
> level per VM).
>
> Is that on the roadmap?
I assume once will start with cluster level enumeration/monitoring first
which is the bug which i asked to open around this thread.
then look at per vm level (I'm guessing best way to make this easy to
manage at per-vm level would be to use 'cluster default' for most vm's)
I understand choosing cpu model per vm may (mainly for -cpu best) also
be desirable in some cases.
Cpu model is a VM property. Setting anything beyond the least common
denominator of your set of hardware hosts, may restrict using some of
the older hosts as expected.
btw: -cpu best is less flexible for non homogeneous set of hosts. Better
use an explicit model for such environment. In theory the newest models
should perform just as good as -best