Re: [Qemu-block] Possible bug: virtio-scsi + iothread (Former x-data-plane) = "Guest moved index from 0 to 61440" warning

2016-04-06 Thread Paolo Bonzini


On 06/04/2016 16:59, Zir Blazer wrote:
>> On Tue, Apr 05, 2016 at 07:49:47PM -0300, Zir Blazer wrote:
>> > The bare minimum script that produces the warning, should be this:
>> > #!/bin/bash
>> > qemu-system-x86_64 \-m 1024M \-enable-kvm \-object
> iothread,id=iothread0 \-device virtio-scsi-pci,iothread=iothread0 \
>> > This produces the "Guest moved index from 0 to 61440" warning.
>> 
>> It does not produce a warning with qemu.git/master. I see the BIOS
>> screen.
>> 
>> Stefan
> 
> Sad that you didn't manage to reproduce it. Maybe its fixed on latest
> QEMU, but to test that I would have to learn how to compile and install
> it myself (Or wait for the Arch Linux User Repository qemu-git to catch
> up, otherwise I will have to wait for 2.6).
> 
> I would like if someone could confirm if it happens on QEMU 2.5, or I'm
> the only one affected due to some other misconfiguration issue (Which
> would be rather rare, since what I'm using is a pretty much a fresh
> install, an Arch Linux has a mostly vanilla QEMU).

I can confirm that it shows the message in Fedora's QEMU 2.5 but not
with upstream 2.6.

Thanks,

Paolo



Re: [Qemu-block] Possible bug: virtio-scsi + iothread (Former x-data-plane) = "Guest moved index from 0 to 61440" warning

2016-04-06 Thread Zir Blazer



> On Tue, Apr 05, 2016 at 07:49:47PM -0300, Zir Blazer wrote:> > The bare 
> minimum script that produces the warning, should be this:
> > #!/bin/bash
> > qemu-system-x86_64 \-m 1024M \-enable-kvm \-object iothread,id=iothread0 
> > \-device virtio-scsi-pci,iothread=iothread0 \
> > This produces the "Guest moved index from 0 to 61440" warning.
> 
> It does not produce a warning with qemu.git/master. I see the BIOS
> screen.
> 
> Stefan

Sad that you didn't manage to reproduce it. Maybe its fixed on latest QEMU, but 
to test that I would have to learn how to compile and install it myself (Or 
wait for the Arch Linux User Repository qemu-git to catch up, otherwise I will 
have to wait for 2.6).I would like if someone could confirm if it happens on 
QEMU 2.5, or I'm the only one affected due to some other misconfiguration issue 
(Which would be rather rare, since what I'm using is a pretty much a fresh 
install, an Arch Linux has a mostly vanilla QEMU).

The system DOES POST (SeaBIOS) and boots too, it just merely prints a console 
warning, not a fatal error. I should have added a Screenshot earlier, to make 
it more clear about how it looks:
http://i.imgur.com/54nvRgd.png
Other things seems to work (Since scsi-cd is attached to one of the affected 
virtio-scsi-pci)...
Anyways, I will have to wait to test with a newer QEMU version. Thanks for 
testing it.
  

Re: [Qemu-block] Possible bug: virtio-scsi + iothread (Former x-data-plane) = "Guest moved index from 0 to 61440" warning

2016-04-06 Thread Stefan Hajnoczi
On Tue, Apr 05, 2016 at 07:49:47PM -0300, Zir Blazer wrote:
> The bare minimum script that produces the warning, should be this:
> #!/bin/bash
> qemu-system-x86_64 \-m 1024M \-enable-kvm \-object iothread,id=iothread0 
> \-device virtio-scsi-pci,iothread=iothread0 \
> This produces the "Guest moved index from 0 to 61440" warning.

It does not produce a warning with qemu.git/master.  I see the BIOS
screen.

Stefan


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