Re: [Xen-users] Error 4+ vif's on HVM guest

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Tue, May 10, 2016 at 02:49:25PM -0700, Rauf Babayev wrote:
> Attached guest.cfg, output from "xl -vvv create guest.cfg" and qemu log
> 
> Thanks,
> 
> On Thu, May 5, 2016 at 9:32 AM, Wei Liu <wei.liu2@xxxxxxxxxx> wrote:
> 
> > On Thu, Apr 28, 2016 at 10:50:59AM -0700, Rauf Babayev wrote:
> > > Hi All,
> > >
> > > I cannot create hvm guest with more than 4 vif's
> > > This is error message:
> > >
> > > > libxl: error: libxl_dm.c:1854:device_model_spawn_outcome: domain 10
> > device
> > > > model: spawn failed (rc=-3)                                  │
> > > > psr-hwinfo          Show hardware information for Platform Shared
> > Resource
> > > > libxl: error: libxl_create.c:1341:domcreate_devmodel_started: device
> > model
> > > > did not start: -3                                            │
> > > > psr-cmt-attach      Attach Cache Monitoring Technology service to a
> > domain
> > > > libxl: error: libxl_dm.c:1964:kill_device_model: Device Model already
> > > > exited                                                            │
> > > > psr-cmt-detach      Detach Cache Monitoring Technology service from a
> > domain
> > > > libxl: error: libxl.c:1591:libxl__destroy_domid: non-existant domain
> > > > 10                                                                 │
> > > > psr-cmt-show        Show Cache Monitoring Technology information
> > > > libxl: error: libxl.c:1549:domain_destroy_callback: unable to destroy
> > > > guest with domid 10                                               │
> > > > psr-cat-cbm-set     Set cache capacity bitmasks(CBM) for a domain
> > > > libxl: error: libxl.c:1476:domain_destroy_cb: destruction of domain 10
> > > > failed
> > > >
> > >
> > > When there are 4 vif's "xl create" works fine
> > > I already saw this bug in xen 4.4 in Ubuntu 14.04 LTS.
> > > But I beleive it was fixed in xen 4.5
> > > Now it is again happening with xen 4.6
> > >
> > > Has anyone experienced the same?
> > > Is there anything to do with it?
> > >
> > >
> > > And yes, I know that using full virtualisation for 4 vif's and
> > > paravirtualised drivers for rest will do the trick.
> > > But I have to use e1000 for vif's.
> > >
> > > Thanks,
> >
> > Can you provide
> >
> >   xl -vvv create guest.cfg
> >
> > and the corresponding QEMU log?
> >

So QEMU complains that it couldn't allocate memory. That's fatal error.

ISTR something related to QEMU's option rom. Could you just try to
replace vif line with:

vif = [ "", "", "", "", "" ]

That is, to not specify a specific vif model.


Wei.

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