[DRBD-user] DRBD, Xen, HVM and live migration

Bart Coninckx bart.coninckx at telenet.be
Tue May 10 17:20:05 CEST 2011

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


Hi Boyko,

HVM is a requisite I'm afraid, that's the reason why I can't the drbd 
block script.

OK, thank you, I will it this way. There is then still the question 
about how to backup, but I will create a new post for that.

thx,

B.



On 05/10/11 17:15, Boyko Yordanov wrote:
> Hi,
>
> For live migration use PV DomUs and Xen's drbd block script - it automatically switches primary/secondary states on both domUs while migrating.
>
> Anyway yes, its that simple - two primaries and live migration works.
>
> Note: I've been having some issues (crashes) with centos xen kernel and drbd 8.3.10 - don't have the time to investigate further.
>
> Boyko
>
> On May 10, 2011, at 6:05 PM, Bart Coninckx wrote:
>
>> Hi,
>>
>> I want to combine all the above mentioned technologies.
>>
>> The Linbit pages warn not to use the drbd: VBD with HVM DomUs.
>>
>> This page however:
>>
>> http://publications.jbfavre.org/virtualisation/cluster-xen-corosync-pacemaker-drbd-ocfs2.en
>>
>> (thank you Jean), simply puts two DRBD devices in dual primary mode and starts Xen DomUs while pointing to the DRBD devices with phy: in the DomU config files.
>> Live migration and HVM seem possible.
>>
>> Is it as simple as Jean describes it? What is the advantage then of the drbd: VBD? Just seeing to it that the dual primary is available (which is handled on Jean's Howto by Pacemaker)?
>>
>>
>> Thx!
>>
>>
>> B.
>



More information about the drbd-user mailing list