[Qemu-devel] Virtio Disk drivers and Microsoft clustering

[Qemu-devel] Virtio Disk drivers and Microsoft clustering

[massimo buscato]

Hi all!

About virtio-scsi driver:
There are many problem to use it on windows 2012 cluster service.

Every time you try to validate a Virtio disk under W2012 cluster tool,
you have this errors:

with VIRTIO DISK device:
"The port driver used by the disk does not support clustering. Disk
bus type does not support clustering. Disk partition style is MBR.
Disk type is BASIC."

with VIRTIO SCSI DISK device:
"The port driver used by the disk does not support clustering. Disk
bus type does not support clustering. Disk partition style is MBR.
Disk type is BASIC. The required inquiry data (SCSI page 83h VPD
descriptor) was reported as not being supported. "

OS: Centos 7 3.10.0-123.13.2.el7.x86_64
libvirt version: 1.1.1, package: 29.el7_0.4
qemu-kvm-1.5.3-60.el7_0.11.x86_64


Thank's!

Re: [Qemu-devel] Virtio Disk drivers and Microsoft clustering

[Fam Zheng]

On Thu, 02/05 15:29, massimo buscato wrote:
> Hi all!
> 
> About virtio-scsi driver:
> There are many problem to use it on windows 2012 cluster service.
> 
> Every time you try to validate a Virtio disk under W2012 cluster tool,
> you have this errors:
> 
> with VIRTIO DISK device:
> "The port driver used by the disk does not support clustering. Disk
> bus type does not support clustering. Disk partition style is MBR.
> Disk type is BASIC."
> 
> with VIRTIO SCSI DISK device:
> "The port driver used by the disk does not support clustering. Disk
> bus type does not support clustering. Disk partition style is MBR.
> Disk type is BASIC. The required inquiry data (SCSI page 83h VPD
> descriptor) was reported as not being supported. "

Hi Massimo,

I don't know much about Windows cluster service but I think this error is
because virtio-scsi is a direct attached controller, like explained in:

http://support.microsoft.com/kb/2839292?wa=wsignin1.0

Thanks,
Fam

Re: [Qemu-devel] Virtio Disk drivers and Microsoft clustering

[Fam Zheng]

On Fri, 02/06 11:23, Fam Zheng wrote:
> On Thu, 02/05 15:29, massimo buscato wrote:
> > Hi all!
> > 
> > About virtio-scsi driver:
> > There are many problem to use it on windows 2012 cluster service.
> > 
> > Every time you try to validate a Virtio disk under W2012 cluster tool,
> > you have this errors:
> > 
> > with VIRTIO DISK device:
> > "The port driver used by the disk does not support clustering. Disk
> > bus type does not support clustering. Disk partition style is MBR.
> > Disk type is BASIC."
> > 
> > with VIRTIO SCSI DISK device:
> > "The port driver used by the disk does not support clustering. Disk
> > bus type does not support clustering. Disk partition style is MBR.
> > Disk type is BASIC. The required inquiry data (SCSI page 83h VPD
> > descriptor) was reported as not being supported. "
> 
> Hi Massimo,
> 
> I don't know much about Windows cluster service but I think this error is
> because virtio-scsi is a direct attached controller, like explained in:
> 
> http://support.microsoft.com/kb/2839292?wa=wsignin1.0
> 

Discussed a bit with Massimo off-list, this feature basically means two systems
can see the same lun at the same time, and one of them accesses it. When one
system is down, the other takes over. In VMware a disk with RDM (raw device
mapping) could be added, so I think scsi-block and/or scsi-generic should work
too.

If I understand correctly, Massimo uses image based scsi-disk.
scsi-{block,generic} requires a scsi target on host side. In order to use an
image file, we could use iscsi service to export the host image and use the
iscsi driver in QEMU. Not sure if there are simpler ways.

Fam

Re: [Qemu-devel] Virtio Disk drivers and Microsoft clustering

[Stefan Hajnoczi]

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On Mon, Feb 09, 2015 at 09:18:15AM +0800, Fam Zheng wrote:
> On Fri, 02/06 11:23, Fam Zheng wrote:
> > On Thu, 02/05 15:29, massimo buscato wrote:
> > > Hi all!
> > > 
> > > About virtio-scsi driver:
> > > There are many problem to use it on windows 2012 cluster service.
> > > 
> > > Every time you try to validate a Virtio disk under W2012 cluster tool,
> > > you have this errors:
> > > 
> > > with VIRTIO DISK device:
> > > "The port driver used by the disk does not support clustering. Disk
> > > bus type does not support clustering. Disk partition style is MBR.
> > > Disk type is BASIC."
> > > 
> > > with VIRTIO SCSI DISK device:
> > > "The port driver used by the disk does not support clustering. Disk
> > > bus type does not support clustering. Disk partition style is MBR.
> > > Disk type is BASIC. The required inquiry data (SCSI page 83h VPD
> > > descriptor) was reported as not being supported. "
> > 
> > Hi Massimo,
> > 
> > I don't know much about Windows cluster service but I think this error is
> > because virtio-scsi is a direct attached controller, like explained in:
> > 
> > http://support.microsoft.com/kb/2839292?wa=wsignin1.0
> > 
> 
> Discussed a bit with Massimo off-list, this feature basically means two systems
> can see the same lun at the same time, and one of them accesses it. When one
> system is down, the other takes over. In VMware a disk with RDM (raw device
> mapping) could be added, so I think scsi-block and/or scsi-generic should work
> too.
> 
> If I understand correctly, Massimo uses image based scsi-disk.
> scsi-{block,generic} requires a scsi target on host side. In order to use an
> image file, we could use iscsi service to export the host image and use the
> iscsi driver in QEMU. Not sure if there are simpler ways.

Sounds like emulating SCSI clustering features (like reservations) on
top of a host file system - but this needs to work across multiple
hosts.

Massimo: Can you describe the shared storage setup you are using?

Stefan

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Re: [Qemu-devel] Virtio Disk drivers and Microsoft clustering

[Massimo Buscato]

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I use raw image on gfs2 ... Filesystem is shared on 2 red hat cluster node
(centos 7).
Il 09/feb/2015 14:46 "Stefan Hajnoczi" <stefanha@redhat.com> ha scritto:

> On Mon, Feb 09, 2015 at 09:18:15AM +0800, Fam Zheng wrote:
> > On Fri, 02/06 11:23, Fam Zheng wrote:
> > > On Thu, 02/05 15:29, massimo buscato wrote:
> > > > Hi all!
> > > >
> > > > About virtio-scsi driver:
> > > > There are many problem to use it on windows 2012 cluster service.
> > > >
> > > > Every time you try to validate a Virtio disk under W2012 cluster
> tool,
> > > > you have this errors:
> > > >
> > > > with VIRTIO DISK device:
> > > > "The port driver used by the disk does not support clustering. Disk
> > > > bus type does not support clustering. Disk partition style is MBR.
> > > > Disk type is BASIC."
> > > >
> > > > with VIRTIO SCSI DISK device:
> > > > "The port driver used by the disk does not support clustering. Disk
> > > > bus type does not support clustering. Disk partition style is MBR.
> > > > Disk type is BASIC. The required inquiry data (SCSI page 83h VPD
> > > > descriptor) was reported as not being supported. "
> > >
> > > Hi Massimo,
> > >
> > > I don't know much about Windows cluster service but I think this error
> is
> > > because virtio-scsi is a direct attached controller, like explained in:
> > >
> > > http://support.microsoft.com/kb/2839292?wa=wsignin1.0
> > >
> >
> > Discussed a bit with Massimo off-list, this feature basically means two
> systems
> > can see the same lun at the same time, and one of them accesses it. When
> one
> > system is down, the other takes over. In VMware a disk with RDM (raw
> device
> > mapping) could be added, so I think scsi-block and/or scsi-generic
> should work
> > too.
> >
> > If I understand correctly, Massimo uses image based scsi-disk.
> > scsi-{block,generic} requires a scsi target on host side. In order to
> use an
> > image file, we could use iscsi service to export the host image and use
> the
> > iscsi driver in QEMU. Not sure if there are simpler ways.
>
> Sounds like emulating SCSI clustering features (like reservations) on
> top of a host file system - but this needs to work across multiple
> hosts.
>
> Massimo: Can you describe the shared storage setup you are using?
>
> Stefan
>

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