Re: [Xen-users] Hotplug scripts not working

[Tom De Vylder <tom@xxxxxxxxxxx>]

On 01 Jun 2011, at 03:19, Mark Pryor wrote:

> --- On Tue, 5/31/11, Tom De Vylder <tom@xxxxxxxxxxx> wrote:
> 
>> From: Tom De Vylder <tom@xxxxxxxxxxx>
>> Subject: [Xen-users] Hotplug scripts not working
>> To: xen-users@xxxxxxxxxxxxxxxxxxx
>> Date: Tuesday, May 31, 2011, 5:44 AM
>> Hi all,
>> 
>> I'd like to know if it's possible to have more verbose
>> output when running a block-prefix script. Other than
>> xend.log.
>> To be more specific I'd like to use bash -x to see why I'm
>> running into the following error:
>> 
>>> # xm create -c host.cfg
>>> Using config file "host.cfg".
>>> aa:bb:cc:dd:ee:ff
>>> Error: Device 51712 (vbd) could not be connected.
>> Hotplug scripts not working.
>> 
>> However xm seems to disregard any output from the
>> block-prefix script.
>> xend.log hangs a few minutes on the following lines:
>> 
>>> [2011-05-31 14:28:41 1894] DEBUG (XendDomainInfo:1286)
>> XendDomainInfo.destroyDevice: deviceClass = vbd, device =
>> vbd/51712
>>> [2011-05-31 14:28:41 1894] DEBUG (DevController:628)
>> hotplugStatusCallback
>> /local/domain/0/backend/vbd/55/51712/hotplug-status.
>>> [2011-05-31 14:28:41 1894] DEBUG (DevController:628)
>> hotplugStatusCallback
>> /local/domain/0/backend/vbd/55/51712/hotplug-status.
>> 
>> 
>> ... and then dies, removes the vif devices and spawns the
>> "hotplug scripts not working" errors.
>> 
> 
> Main reason for the above error on xen 4.0+ is missing the 1 or 2 drivers 
> from below:
> ls /dev/xen
>     evtchn
>     gntdev
> 
> If you built from source (please post `xm info`) the configs are
> 
> CONFIG_XEN_DEV_EVTCHN=y
> CONFIG_XEN_GNTDEV=y
> 
> also double check that below is populated
>   /proc/xen
> 
> if its not, there is no xenfs mount -- another common error.

Should be ok:

# ls -l /dev/xen
evtchn
gntdev

# lsmod | grep -i xen
xen_evtchn              4339  6 
xenfs                   9600  1

I've forgot to mention it's a clean debian 6 install with xen4 and already a 
few domU's running.



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