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Re: [Xen-devel] phy disks and vifs timing out in DomU



On 29/07/2011 16:55, Konrad Rzeszutek Wilk wrote:
> On Thu, Jul 28, 2011 at 05:00:13PM +0100, Anthony Wright wrote:
>> On 28/07/2011 16:46, Todd Deshane wrote:
>>> On Thu, Jul 28, 2011 at 3:36 PM, Anthony Wright <anthony@xxxxxxxxxxxxxxx> 
>>> wrote:
>>>> On 28/07/2011 16:01, Todd Deshane wrote:
>>>>> On Thu, Jul 28, 2011 at 7:24 AM, Anthony Wright <anthony@xxxxxxxxxxxxxxx> 
>>>>> wrote:
>>>>>> I have a 32 bit 3.0 Dom0 kernel running Xen 4.1. I am trying to run a 32 
>>>>>> bit PV DomU with two tap:aio disks, two phy disks & 1 vif. The two 
>>>>>> tap:aio disks are working fine, but the phy disks and the vif don't work 
>>>>>> and I get the following error messages from the DomU kernel during boot:
>>>>>>
>>>>>> [    1.783658] Using IPI No-Shortcut mode
>>>>>> [   11.880061] XENBUS: Timeout connecting to device: device/vbd/51729 
>>>>>> (state 3)
>>>>>> [   11.880072] XENBUS: Timeout connecting to device: device/vbd/51745 
>>>>>> (state 3)
> What device does that correspond to (hint: run xl block-list or xm 
> block-list)?
>
The output from block-list is:

Vdev  BE  handle state evt-ch ring-ref BE-path
51729 0   764    3     10     10       /local/domain/0/backend/vbd/764/51729
51745 0   764    3     11     11       /local/domain/0/backend/vbd/764/51745
51713 0   764    4     8      8       
/local/domain/0/backend/qdisk/764/51713
51714 0   764    4     9      9       
/local/domain/0/backend/qdisk/764/51714

The two vbds map to two LVM logical volumes in two different volume groups.

On 29/07/2011 17:06, Konrad Rzeszutek Wilk wrote:
>> > I have installed virtually identical systems on two physical machines -
>> > identical (and I mean identical) xen, dom0, domU with possibly a
> md5sum match?
Yes - md5sum match on all the key components, i.e. xen, dom0 kernel,
99.9% of the root filesystem, the domU kernel & 99.9% of the domU
filesystem. Where there isn't a precise match is on some of the config
files. I don't think these should have any effect, but I will have a go
at mirroring the disks (I can't swap disks since one is SATA & the other
IDE).

I also was having problems with the vif device, and got a kernel bug
report that could potentially relate to it. I've attached two syslogs.

Anthony.

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