[Engine-devel] Stable PCI Addresses design wiki

[Itamar Heim]

On 12/01/2011 04:09 PM, Miki Kenneth wrote:
> I know that we are talking about only stable addresses, but I would like to broaden the scope a bit
> (don't kick me guys)...
> Shouldn't we keep a run-time configuration vs "saved/commit" configuration.
> By run time I mean: the current memory/cpu/disks/address per VM and by "stable" I mean the "one in the DB".
> That way, I'm going to be able to change properties in the stable config, which will not affect the running one
> (and vice versa).
>
> Maybe this is totally different feature - but I decide to throw it on the table.

shouldn't that be part of the snapshot improvements design?

>
> Miki
>
> ----- Original Message -----
>> From: "Eli Mesika"<emesika at redhat.com>
>> To: engine-devel at ovirt.org
>> Sent: Wednesday, November 30, 2011 5:17:42 PM
>> Subject: Re: [Engine-devel] Stable PCI Addresses design wiki
>>
>> Hi again
>> The following is a design draft for a new feature of oVirt-engine
>> planned for 3.1
>>
>> The feature allow devices in guest virtual machines to retain the
>> same PCI address allocations as other devices are added or removed
>> from the guest configuration. This is particularly important for
>> Windows guests in order to prevent warnings or reactivation when
>> device addresses change.
>>
>> This feature is supported by libvirt and should be implemented by
>> RHEVM and VDSM.
>>
>> When creating a VM, QEMU allocates PCI addresses to the guest
>> devices, these addresses are being reported by libvirt to VDSM and
>> VDSM should report it back to RHEVM. RHEVM should persist the PCI
>> addresses and report it as part of the VM configuration on the next
>> run. If a change to the VM devices occurred RHEVM should detect the
>> change and persist the new PCI addresses.
>>
>> Please review.
>>
>> Thanks
>> Eli Mesika
>> Redhat ISRAEL
>>
>>
>> ----- Original Message -----
>>> From: "Eli Mesika"<emesika at redhat.com>
>>> To: engine-devel at ovirt.org
>>> Sent: Wednesday, November 30, 2011 5:06:37 PM
>>> Subject: [Engine-devel] Stable PCI Addresses design wiki
>>>
>>> http://www.ovirt.org/wiki/Features/Design/StablePCIAddresses
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