Re: [Xen-users] Xen hotplug error

["Iain J. Watson" <iain@xxxxxxxxxxxxxxx>]

On Wed, May 13, 2009 at 3:10 PM, Fajar A. Nugraha <fajar@xxxxxxxxx> wrote:
> On Wed, May 13, 2009 at 8:52 PM, Iain J. Watson <iain@xxxxxxxxxxxxxxx> wrote:
>>>>  "xend.err 'Device 0 (vif) could not be connected. Hotplug scripts
>>>> not working.')"
>>>>
>>>
>>> Is udevd running?
>>>
>>
>> Yes it is:
>>
>> root       773  0.0  0.0  12616   796 ?        S<s  May05   0:11 /sbin/udevd 
>> -d
>
> Weird. When I got that error it's always udevd dead.

Do you mean as in not running at all, or sitting hung on something? Is
it safe to restart udevd with regards to not breaking already running
domUs?

I've attached strace to the udevd process on the 3 xen dom0s affected
by this and found they are all in the same state, but I don't know if
this is normal for udevd or a problem:

  select(8, [3 4 5 7], NULL, NULL, NULL <unfinished ...>

>
> Perhaps this is relevant to your problem
> http://www.centos.org/docs/5/html/Virtualization-en-US/ch19s23.html
> https://bugzilla.redhat.com/show_bug.cgi?id=456926
>

Neither of these URLs show anything similar to what I am seeing.

> Also please check :
> - are you using file:/ backed domUs?
> - what is the domain ID of the last domU you created (is it over 1000?)
>

The domUs are backed by iSCSI LUNs so are block:/ backed. The domain
IDs are well below 1000, the last IDs were around 200.

> Regards,
>
> Fajar
>
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>



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