Re: [Xen-users] xl devd won't start in DomU: failed to get own domid

[Roger Pau Monné <roger.pau@xxxxxxxxxx>]

Please keep me in the Cc or else I might miss some of the replies.

On Sat, Apr 30, 2016 at 11:09:27PM +0200, Rüdiger Otte wrote:
> On Mon, 25 Apr 2016 11:11:47 +0200
> Roger Pau Monné wrote:
> 
> > On Sun, Apr 24, 2016 at 01:41:34PM +0200, Rüdiger Otte wrote:
> > > Hi,
> > > 
> > > I'm successfully running my debian system with Xen 4.4 for more
> > > than two years now. When trying to upgrade to the recent 4.6
> > > release I ran into a problem with the network driver domain.
> > > 
> > > As Xen 4.6 requires devd to run in a driver domain, I tried to
> > > start it there but it fails:
> > > 
> > > root@svc-fw:~# xl devd -F
> > > libxl: error: libxl.c:3864:libxl_device_events_handler: unable to
> > > get domain id
> > > 
> > > Strange thing is that 'xenstore-read domid' outputs the domid
> > > without any problems.
> > 
> > It is indeed quite weird, xl does exactly the same as
> > 'xenstore-read domid' AFAICT.
> > 
> > Can you paste the configuration file of your driver domain? Also,
> > do you have driver_domain=1 in your configuration file? (although
> > AFAICT the error for not having driver_domain=1 should be different
> > than the one you are getting).
> 
> I hadn't driver_domain=1 in the configuration, but adding it didn't
> changed anything:
> 
> root@svc-fw:~# xl devd -F
> libxl: error: libxl.c:1972:libxl__get_domid: failed to get own domid
> (domid)
> libxl: error: libxl.c:4553:libxl_device_events_handler: unable to get
> domain id
> 
> 
> xl.cfg:
> 
> name = 'svc-fw'
> uuid = 'fc2c7c06-c301-4f6d-9862-d7357eacccda'
> disk = [ '/xen/disk-image/svc-fw-debian.img,raw,hda,w' , 
>        ]
> bootloader = 'pygrub'
> extra = 'iommu=soft'
> cpus = "0-1"
> vcpus = 1
> cpu_weight = 64
> memory = 256
> device_model_version = 'qemu-xen'
> device_model_override = '/usr/bin/qemu-system-x86_64'
> on_poweroff = 'destroy'
> on_reboot = 'restart'
> on_crash = 'destroy'
> driver_domain = 1
> pci = [ '02:00.0' ]
> 
> 
> The domain is running with Debian Wheezy with Xen packages and
> dependencies from Jessie / Stretch.

TBH, I don't see anything wrong with your config.

Could you try to run `xl -vvv devd -F` in order to see if there are more 
messages that might help clarify what's going on?

Roger. 

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