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


From: Peter Lieven
Subject: Re: [Qemu-devel] [Qemu-block] Migration sometimes fails with IDE and Qemu 2.2.1
Date: Tue, 07 Apr 2015 20:54:18 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0

Am 07.04.2015 um 17:14 schrieb Paolo Bonzini:
>
> 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. :)

Okay, I was thinking you just worked on that code and were the
new IDE expert ;-)

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

I can confirm that its /dev/hdX.

Peter



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