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.
--
Focus on: Server Vitualization, Network security,Scanner,NodeJS,JAVA,WWW
Blog: http://www.nohouse.net
Timon Wang
2013-Aug-08 07:54 UTC
Re: [libvirt-users] Oracle RAC in libvirt+KVM environment
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. On Fri, Aug 2, 2013 at 1:58 PM, Timon Wang <timonwst@gmail.com> 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. > > -- > Focus on: Server Vitualization, Network security,Scanner,NodeJS,JAVA,WWW > Blog: http://www.nohouse.net-- Focus on: Server Vitualization, Network security,Scanner,NodeJS,JAVA,WWW Blog: http://www.nohouse.net
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@gmail.com> 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. >> >> -- >> Focus on: Server Vitualization, Network security,Scanner,NodeJS,JAVA,WWW >> Blog: http://www.nohouse.net > > >
Stefan Hajnoczi
2013-Aug-12 09:49 UTC
Re: [libvirt-users] Oracle RAC in libvirt+KVM environment
On Fri, Aug 02, 2013 at 01:58:24PM +0800, Timon Wang 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'/>qcow2 is not cluster-aware, it cannot be opened by multiple VMs at the same time. You must use raw. Stefan