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Re: [Qemu-devel] Is this an invalid combination?


From: Bruce Rogers
Subject: Re: [Qemu-devel] Is this an invalid combination?
Date: Tue, 15 Feb 2011 13:28:44 -0700

 >>> On 2/15/2011 at 01:21 PM, Anthony Liguori <address@hidden> wrote: 
> On 02/15/2011 02:07 PM, Bruce Rogers wrote:
>> Hi,
>>
>> We just noticed an issue flagged by a libvirt based test.  This same command 
> line didn't used to fail, and I wanted to be sure that this is behaving as 
> intended.
>>
>> When the following command line is used on the current qemu version:
>>
>> x86_64-softmmu/qemu-system-x86_64 -kernel /boot/vmlinuz -drive 
> file=~/disk0.raw,if=none,id=foo,boot=on -device virtio-blk-pci,drive=foo
>>
>> We get the following error reported:
>> Two devices with same boot index 0
>>
>> Previous versions of qemu did not flag this as an error condition.
>>    
> 
> Upstream QEMU does not have a boolean boot flag although I guess we 
> ignore it in -drive which sucks :-/
> 
> In upstream QEMU, the BIOS can boot just fine from a virtio device.  
> What you're seeing is that we've apparently overloaded the boot flag in 
> upstream qemu to mean boot index.
> 
> Gleb, what's the right invocation here?
> 
> Regards,
> 
> ANthony Liguori
> 
>> I can see that we are indicating two different boot sources here, so I would 
> guess the command line is invalid, but wanted to be sure.
>>
>> Bruce
>>
>>
>>    

Yeah, I should have pointed out that this was using qemu-kvm.
Bruce




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