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Re: [Qemu-ppc] [PATCH 7/8] pseries: savevm support for PAPR virtual SCSI


From: Alexey Kardashevskiy
Subject: Re: [Qemu-ppc] [PATCH 7/8] pseries: savevm support for PAPR virtual SCSI
Date: Mon, 03 Jun 2013 19:37:36 +1000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130514 Thunderbird/17.0.6

On 06/03/2013 06:07 PM, Benjamin Herrenschmidt wrote:
> On Mon, 2013-06-03 at 15:46 +1000, Alexey Kardashevskiy wrote:
>> Ok. I implemented {save|load}_request for IBMVSCSI, started testing -
>> the
>> destination system behaves very unstable, sometime it is a fault in
>> _raw_spin_lock or it looks okay but any attempt to read the filesystem
>> leads to 100% cpu load in qemu process and no response from the guest.
>>
>> I tried virtio-scsi as well (as it was referred as a good example), it
>> fails in exactly the same way. So I started wondering - when did you
>> try it
>> last time? :)
> 
> Did you try virtio-blk or even a ramdisk ? IE, Make sure the problem
> isn't some kind of generic migration issue unrelated to storage ?


False alarm. During multiple switches between different git branches, I
just lost my own patch which disables "bulk" migration (which we want to
revert anyway, just waiting for the author to do that himself) :)

At least my test does not fail any more. Sorry for confusing.



-- 
Alexey



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