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

[Paolo Bonzini]

Il 03/06/2013 11:37, Alexey Kardashevskiy ha scritto:
> 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.

Good, I was surprised.  That area doesn't see much testing, but it
hasn't seen much change either.

Paolo