Re: KVM-88 broke VirtIO Hard Disks

Re: KVM-88 broke VirtIO Hard Disks

[Alexey Eromenko]

----- "Marcelo Tosatti" <mtosatti@redhat.com> wrote:

> On Thu, Jul 23, 2009 at 07:37:37AM -0400, Alexey Eromenko wrote:
> > 
> > Hi All !
> > 
> > In addition to Floppy controllers KVM-88 also break VirtIO hard
> disks. (Windows 2003 Drivers refuse to work now)
> > 
> > Linux (RHEL 5.3/x64) still boots off VirtIO Hard Disk.
> > 
> > It turned out to be a Qemu merge into KVM userspace:
> > kvm-87-119-ga8b7f95 (commit
> a8b7f959d1fd97c4ccaf08ce750020ecd08b4c88)
> > 
> > Can you look into it?
> 
> Not sure if you familiar with this, but anyway:
> 
> $ git diff-tree -p bf011293f  | patch -R -p1 
> 

Yes, Thanks, This is it ! This is the problem.

-Alexey

Re: KVM-88 broke VirtIO Hard Disks

[Dustin Kirkland]

On Thu, Jul 23, 2009 at 9:23 AM, Alexey Eromenko<aeromenk@redhat.com> wrote:
>
> ----- "Marcelo Tosatti" <mtosatti@redhat.com> wrote:
>
>> On Thu, Jul 23, 2009 at 07:37:37AM -0400, Alexey Eromenko wrote:
>> >
>> > Hi All !
>> >
>> > In addition to Floppy controllers KVM-88 also break VirtIO hard
>> disks. (Windows 2003 Drivers refuse to work now)
>> >
>> > Linux (RHEL 5.3/x64) still boots off VirtIO Hard Disk.
>> >
>> > It turned out to be a Qemu merge into KVM userspace:
>> > kvm-87-119-ga8b7f95 (commit
>> a8b7f959d1fd97c4ccaf08ce750020ecd08b4c88)
>> >
>> > Can you look into it?
>>
>> Not sure if you familiar with this, but anyway:
>>
>> $ git diff-tree -p bf011293f  | patch -R -p1
>>
>
> Yes, Thanks, This is it ! This is the problem.

I, too, can confirm that reverting this commit solves the same problem
for me.  Having reverted the commit, I can once again boot with virtio
disks.

:-Dustin

RE: KVM-88 broke VirtIO Hard Disks

[Dietmar Maurer]

VirtIO is still broken in qemu-kvm-0-11.0. Reverting the patch solves the problem.

Should I report that bug somewhere else?

- Dietmar 

> -----Original Message-----
> From: kvm-owner@vger.kernel.org [mailto:kvm-owner@vger.kernel.org] On
> Behalf Of Alexey Eromenko
> Sent: Donnerstag, 23. Juli 2009 16:24
> To: kvm
> Subject: Re: KVM-88 broke VirtIO Hard Disks
> 
> 
> ----- "Marcelo Tosatti" <mtosatti@redhat.com> wrote:
> 
> > On Thu, Jul 23, 2009 at 07:37:37AM -0400, Alexey Eromenko wrote:
> > >
> > > Hi All !
> > >
> > > In addition to Floppy controllers KVM-88 also break VirtIO hard
> > disks. (Windows 2003 Drivers refuse to work now)
> > >
> > > Linux (RHEL 5.3/x64) still boots off VirtIO Hard Disk.
> > >
> > > It turned out to be a Qemu merge into KVM userspace:
> > > kvm-87-119-ga8b7f95 (commit
> > a8b7f959d1fd97c4ccaf08ce750020ecd08b4c88)
> > >
> > > Can you look into it?
> >
> > Not sure if you familiar with this, but anyway:
> >
> > $ git diff-tree -p bf011293f  | patch -R -p1
> >
> 
> Yes, Thanks, This is it ! This is the problem.

Re: KVM-88 broke VirtIO Hard Disks

[Anthony Liguori]

john cooper wrote:
> Anthony Liguori wrote:
>> Marcelo Tosatti wrote:
>>> bf011293f is an easy one to blame, can you revert it and check,
>>> please?
>>>   
>>
>> Has anyone tracked down a proper fix?
> Apologies, I'd been distracted elsewhere.
>
> I suspect transferring the identify page in
> its entirety via the config space is somehow
> confusing the windows virtio driver although
> it isn't immediately clear why.

It breaks with a Linux guest too FWIW.

Regards,

Anthony Liguori

Re: KVM-88 broke VirtIO Hard Disks

[john cooper]

Anthony Liguori wrote:
> Marcelo Tosatti wrote:
>> bf011293f is an easy one to blame, can you revert it and check,
>> please?
>>   
>
> Has anyone tracked down a proper fix?
Apologies, I'd been distracted elsewhere.

I suspect transferring the identify page in
its entirety via the config space is somehow
confusing the windows virtio driver although
it isn't immediately clear why.

Investigating it now.

-john

-- 
john.cooper@redhat.com

Re: KVM-88 broke VirtIO Hard Disks

[Anthony Liguori]

Marcelo Tosatti wrote:
> On Thu, Jul 23, 2009 at 07:37:37AM -0400, Alexey Eromenko wrote:
>   
>> Hi All !
>>
>> In addition to Floppy controllers KVM-88 also break VirtIO hard disks. (Windows 2003 Drivers refuse to work now)
>>
>> Linux (RHEL 5.3/x64) still boots off VirtIO Hard Disk.
>>
>> It turned out to be a Qemu merge into KVM userspace:
>> kvm-87-119-ga8b7f95 (commit a8b7f959d1fd97c4ccaf08ce750020ecd08b4c88)
>>
>> Can you look into it?
>>     
>
> bf011293f is an easy one to blame, can you revert it and check,
> please?
>   

Has anyone tracked down a proper fix?

Regards,

Anthony Liguori

Re: KVM-88 broke VirtIO Hard Disks

[Marcelo Tosatti]

On Thu, Jul 23, 2009 at 07:37:37AM -0400, Alexey Eromenko wrote:
> 
> Hi All !
> 
> In addition to Floppy controllers KVM-88 also break VirtIO hard disks. (Windows 2003 Drivers refuse to work now)
> 
> Linux (RHEL 5.3/x64) still boots off VirtIO Hard Disk.
> 
> It turned out to be a Qemu merge into KVM userspace:
> kvm-87-119-ga8b7f95 (commit a8b7f959d1fd97c4ccaf08ce750020ecd08b4c88)
> 
> Can you look into it?

bf011293f is an easy one to blame, can you revert it and check,
please?

> 
> -Alexey, 23.7.2009.
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KVM-88 broke VirtIO Hard Disks

[Alexey Eromenko]

Hi All !

In addition to Floppy controllers KVM-88 also break VirtIO hard disks. (Windows 2003 Drivers refuse to work now)

Linux (RHEL 5.3/x64) still boots off VirtIO Hard Disk.

It turned out to be a Qemu merge into KVM userspace:
kvm-87-119-ga8b7f95 (commit a8b7f959d1fd97c4ccaf08ce750020ecd08b4c88)

Can you look into it?

-Alexey, 23.7.2009.