Re: "Hotplug scripts not working" again

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Sun, Jun 07, 2009 at 10:56:06AM -0500, Eric Haszlakiewicz wrote:
> 
> Previously, I had attempted to get Xen working on one of my machines, and ran 
> into problems mostly due to not starting the appropriate daemons.  I'm now 
> attempting to setup a domU on another machine, with a newly installed Xen, 
> and I can't get it to work using what I thought was the same steps as I
> used before.
> All of "xend start", xenstored, xenconsoled, and xenbackendd are running, but
> I'm still getting errors about not being able to create the vif interfaces.
> Any ideas for what I should try?
> 
> When I run:
> xm create foo
> It hangs for a while, then prints:
> Error: Device 0 (vif) could not be connected. Hotplug scripts not working.

This is usually when it tries to connect the vif to a non-existing bridge

> 
> In the xend.log, the last few lines when it hangs are:
> [2009-06-06 21:26:54 12883] DEBUG (DevController:151) Waiting for devices vif.
> [2009-06-06 21:26:54 12883] DEBUG (DevController:151) Waiting for devices usb.
> [2009-06-06 21:26:54 12883] DEBUG (DevController:151) Waiting for devices vbd.
> [2009-06-06 21:26:54 12883] DEBUG (DevController:156) Waiting for 1.
> [2009-06-06 21:26:54 12883] DEBUG (DevController:590) hotplugStatusCallback 
> /local/domain/0/backend/vbd/9/1/hotplug-status.
> 
> but eventually it figures out things aren't working and destroys the domain.
> 
> In xend-debug.log I see these lines:
> Xend started at Sat Jun  6 21:22:56 2009.
> brctl: not found
> brctl: not found

What about /var/log/xenbackendd.log ?

> 
> The machine has a wm0 network interface.  I created bridge0 with:
> ifconfig bridge0 create
> brconfig bridge0 add wm0 up
> (This step causes all network access to temporarily hang.  Is that normal?)

Yes, it's because the interface got switched to promiscous mode.

> [...]
> 
> I noticed that when it's hanging, if I run xenstore-ls, that also gets stuck,

I also noticed that xenstore-ls can't list the whole store, but it's
usually not a problem.

-- 
Manuel Bouyer, LIP6, Universite Paris VI.           
Manuel.Bouyer%lip6.fr@localhost
     NetBSD: 26 ans d'experience feront toujours la difference
--