[Fedora-xen] virt-manager destroying the guest leaves a "ghost" in xend.

[Marko Ristola]

Hi Konrad.

I can easilly repeat a following situation:
1. Start up a guest on Virt-Manager. The quest is created via virt-manager, Fedora 14, as a network install.
2. Shut it down via Virt-Manager's menus.
3. Wait until Xen reports on xend.log:
"Domain has shutdown: name=fedora14 id=2 reason=poweroff"
On virt-manager, guest's status remains "Running".
If I try any operations for the guest, I get a Python exception,
something like you found, but related to the operation.

4. Disconnect from localhost(xen) on Virt-Manager.
5. Connect into localhost(xen) on Virt-Manager.
6. Now the guest status of fedora14 is "Shutoff".
7. Now we can go back to phase 1 and start again.

So the bug is (on high level) something like: Xen turns off the guest, but virt-manager won't
get notified, or won't detect, about the state change of Xen quest: "Running" -> "Shutoff".

So my hypothesis on your problem is, that Xen already turned guest's power off,
and virt-manager didn't notice it. So virt-manager asks Xen to do commands which aren't
supported for turned off quest.

Regards,
Marko Ristola

On 10/11/2011 01:07 AM, Konrad Rzeszutek Wilk wrote:
> I tried to install a guest and midway during it decided to install something
> else so I stopped the process and killed the guest.
>
> But got an error and xend.log has this:
>
> [2011-10-10 17:42:06 961] DEBUG (XendDomainInfo:1276) XendDomainInfo.destroyDevice: deviceClass = vbd, device = vbd/51712
> [2011-10-10 17:43:29 961] ERROR (SrvBase:88) Request destroy failed.
> Traceback (most recent call last):
>    File "/usr/lib64/python2.7/site-packages/xen/web/SrvBase.py", line 85, in perform
>      return op_method(op, req)
>    File "/usr/lib64/python2.7/site-packages/xen/xend/server/SrvDomain.py", line 89, in op_destroy
>      return self.xd.domain_destroy(self.dom.domid)
>    File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomain.py", line 1315, in domain_destroy
>      dominfo = self.domain_lookup_nr(domid)
>    File "/usr/lib64/python2.7/site-packages/xen/xend/XendDomain.py", line 588, in domain_lookup_nr
>      if int(domid) in self.domains:
> TypeError: int() argument must be a string or a number, not 'NoneType'
>
> and "xm list" tells me
>
> [root at tst006 /]# xm list
> Name                                        ID   Mem VCPUs      State   Time(s)
> Domain-0                                     0  3343     2     r-----    162.2
> F15_test                                        1024     1                 0.0
>
>
> Quitting virt-manager and then 'Deleting' the F15_test makes xend finally remove the
> ghost:
>
> [2011-10-10 17:45:27 961] INFO (XendDomain:1126) Domain F15_test (18eaec13-8ed3-ad0c-6473-7947366fce02) deleted.
>
>
> So.. has anybody else hit this?
> --
> xen mailing list
> xen at lists.fedoraproject.org
> https://admin.fedoraproject.org/mailman/listinfo/xen