11:54 a.m.
----- Original Message -----
From: "Patrick Hurrelmann"
<patrick.hurrelmann(a)lobster.de>
To: "users" <users(a)ovirt.org>
Cc: "Omer Frenkel" <ofrenkel(a)redhat.com>
Sent: Monday, March 11, 2013 11:39:46 AM
Subject: Re: [Users] 6.4 CR: oVirt 3.1 breaks with missing cpu features after update to
CentOS 6.4 (6.3 + CR)
>> Alright, just verified it. A vm started on a 6.3 host can be
>> successfully migrated to the new 6.4 host and then back to any
>> other 6.3
>> host. It just won't migrate a vm started on 6.4 to any host
>> running 6.3.
>
> This surprises me. Engine should have used the same emulatedMachine
> value, independent of the initial host. Could you share the
> vdsm.log
> lines mentionioning "emulatedMachine" in both cases?
>
> Dan.
Hi Dan,
sorry for coming back this late. I checked it and the default
emulatedMachine is pc. And machine pc differs in the definition
between
6.3 and 6.4.
the value sent to vdsm from the engine is configurable per cluster compatibility version,
no reason for it to be 'pc' anywhere, you can use engine-config to change
EmulatedMachine to the correct value (for 3.2 cluster probably you need to use
'rhel6.3.0')
virsh 6.3:
<guest>
<os_type>hvm</os_type>
<arch name='x86_64'>
<wordsize>64</wordsize>
<emulator>/usr/libexec/qemu-kvm</emulator>
<machine>rhel6.3.0</machine>
<machine canonical='rhel6.3.0'>pc</machine>
<machine>rhel6.2.0</machine>
<machine>rhel6.1.0</machine>
<machine>rhel6.0.0</machine>
<machine>rhel5.5.0</machine>
<machine>rhel5.4.4</machine>
<machine>rhel5.4.0</machine>
<domain type='qemu'>
</domain>
<domain type='kvm'>
<emulator>/usr/libexec/qemu-kvm</emulator>
</domain>
</arch>
<features>
<cpuselection/>
<deviceboot/>
<acpi default='on' toggle='yes'/>
<apic default='on' toggle='no'/>
</features>
</guest>
virsh 6.4:
<guest>
<os_type>hvm</os_type>
<arch name='x86_64'>
<wordsize>64</wordsize>
<emulator>/usr/libexec/qemu-kvm</emulator>
<machine>rhel6.4.0</machine>
<machine canonical='rhel6.4.0'>pc</machine>
<machine>rhel6.3.0</machine>
<machine>rhel6.2.0</machine>
<machine>rhel6.1.0</machine>
<machine>rhel6.0.0</machine>
<machine>rhel5.5.0</machine>
<machine>rhel5.4.4</machine>
<machine>rhel5.4.0</machine>
<domain type='qemu'>
</domain>
<domain type='kvm'>
<emulator>/usr/libexec/qemu-kvm</emulator>
</domain>
</arch>
<features>
<cpuselection/>
<deviceboot/>
<acpi default='on' toggle='yes'/>
<apic default='on' toggle='no'/>
</features>
</guest>
Regards
Patrick
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