Re: Oracle RAC in libvirt+KVM environment

[Don Koch <dkoch-H+0wwilmMs1BDgjK7y7TUQ@public.gmane.org>]

On 08/08/2013 03:54 AM, Timon Wang wrote:
> Anybody have idea on it?
> 
> I tried to set the disk as raw format, and retried the setup process,
> but still can't get through.

Caveat: I know nothing in particular about Oracle RAC, but...

Assuming that RAC uses something like SCSI reservations in order to
share the disk, I would guess it doesn't like the disk being on the IDE
bus.

> 
> On Fri, Aug 2, 2013 at 1:58 PM, Timon Wang <timonwst-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>> We wan't to setup two Oracle instance and make RAC work on them.
>> Both VM are setup based on libvirt + KVM, we use a lvm lun which
>> formated in qcow2 format and set the shareable properties in the disk
>> driver like this:
>>
>>     <disk type='block' device='disk'>
>>       <driver name='qemu' type='qcow2' cache='none'/>
>>       <source dev='/dev/81035c32-d2e4-4aaf-82fa-3e76ae587586/ca18f6a5-7c98-46ea-b562-9424e68a52f3'/>
>>       <target dev='hda' bus='ide'/>
>>       <shareable/>
>>       <address type='drive' controller='0' bus='0' target='0' unit='0'/>
>>     </disk>
>>
>> But when we use it as shared data disk like we use iscsi/FC disk for
>> shared data disk, the disk can't be recognized as a share disk, and
>> RAC can't be setup in the environment.
>>
>> Any body can give me some guild on this?
>>
>> I am wondering shareable in the libvirt config really makes the disk shareable?
>>
>> How can I setup the RAC environment in this situable?
>>
>> I found that vmware and vbox can do this according to a blog post, I
>> am wondering if kvm has this ability to make a disk really shareable.
>>
>> --
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> 
> 
>