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Re: [Qemu-block] [Qemu-devel] Migration sometimes fails with IDE and Qem


From: Paolo Bonzini
Subject: Re: [Qemu-block] [Qemu-devel] Migration sometimes fails with IDE and Qemu 2.2.1
Date: Tue, 07 Apr 2015 17:14:03 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0


On 07/04/2015 17:11, Peter Lieven wrote:
> > I'm not sure at what kernel version the switch is, but newer kernels use 
> > some
> > code shared with the newer SATA world (libata?)  where as older kernels had
> > separate IDE code, so the behaviour of the two can be quite different.
>
> Thats a good point. I will check what the kernels have.
> I remember that there was sth like a problem with error handling in
> the old drivers? Paolo, you worked a lot on IDE lately. Do you remember?

No, I don't know...  I didn't work a lot on IDE, those patches were all
several years old and finally John shepherded them in. :)

Still, what David says is correct.  At least RHEL5's 2.6.18 defaulted to
the old IDE drivers (/dev/hdXNN).

Paolo



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