KeyError: 'use_tmp_kernel' with -unstable

KeyError: 'use_tmp_kernel' with -unstable

[Jun Koi]

Hi,

The latest -unstable tree has following error when starting xend

This is on Ubuntu 9.04, Python 2.6.2

Any suggestion to fix this?

Thanks,
J

# cat /var/log/xen/xend.log
....
ERROR (SrvDaemon:349) Exception starting xend ('use_tmp_kernel')
Traceback (most recent call last):
  File "/usr/local/lib/python2.6/dist-packages/xen/xend/server/SrvDaemon.py",
line 341, in run
    servers = SrvServer.create()
  File "/usr/local/lib/python2.6/dist-packages/xen/xend/server/SrvServer.py",
line 251, in create
    root.putChild('xend', SrvRoot())
  File "/usr/local/lib/python2.6/dist-packages/xen/xend/server/SrvRoot.py",
line 40, in __init__
    self.get(name)
  File "/usr/local/lib/python2.6/dist-packages/xen/web/SrvDir.py",
line 84, in get
    val = val.getobj()
  File "/usr/local/lib/python2.6/dist-packages/xen/web/SrvDir.py",
line 52, in getobj
    self.obj = klassobj()
  File "/usr/local/lib/python2.6/dist-packages/xen/xend/server/SrvNode.py",
line 30, in __init__
    self.xn = XendNode.instance()
  File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendNode.py",
line 1015, in instance
    inst.save()
  File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendNode.py",
line 485, in save
    self.save_networks()
  File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendNode.py",
line 500, in save_networks
    for network_uuid in XendNetwork.get_all()])
  File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendBase.py",
line 102, in get_record
    for key in keys])
  File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendNetwork.py",
line 196, in get_VIFs
    vms = XendDomain.instance().get_all_vms()
  File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendDomain.py",
line 1739, in instance
    inst.init()
  File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendDomain.py",
line 123, in init
    dom0 = XendDomainInfo.recreate(dom0info, True)
  File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendDomainInfo.py",
line 206, in recreate
    vm.image = image.create(vm, vm.info)
  File "/usr/local/lib/python2.6/dist-packages/xen/xend/image.py",
line 66, in create
    return findImageHandlerClass(vmConfig)(vm, vmConfig)
  File "/usr/local/lib/python2.6/dist-packages/xen/xend/image.py",
line 98, in __init__
    self.configure(vmConfig)
  File "/usr/local/lib/python2.6/dist-packages/xen/xend/image.py",
line 680, in configure
    ImageHandler.configure(self, vmConfig)
  File "/usr/local/lib/python2.6/dist-packages/xen/xend/image.py",
line 111, in configure
    if vmConfig['use_tmp_kernel']:
KeyError: 'use_tmp_kernel'

Re: KeyError: 'use_tmp_kernel' with -unstable

[Keir Fraser]

The offending changeset is 19961. I will revert.

 -- Keir

On 24/07/2009 11:58, "Jun Koi" <junkoi2004@gmail.com> wrote:

> Hi,
> 
> The latest -unstable tree has following error when starting xend
> 
> This is on Ubuntu 9.04, Python 2.6.2
> 
> Any suggestion to fix this?
> 
> Thanks,
> J
> 
> # cat /var/log/xen/xend.log
> ....
> ERROR (SrvDaemon:349) Exception starting xend ('use_tmp_kernel')
> Traceback (most recent call last):
>   File "/usr/local/lib/python2.6/dist-packages/xen/xend/server/SrvDaemon.py",
> line 341, in run
>     servers = SrvServer.create()
>   File "/usr/local/lib/python2.6/dist-packages/xen/xend/server/SrvServer.py",
> line 251, in create
>     root.putChild('xend', SrvRoot())
>   File "/usr/local/lib/python2.6/dist-packages/xen/xend/server/SrvRoot.py",
> line 40, in __init__
>     self.get(name)
>   File "/usr/local/lib/python2.6/dist-packages/xen/web/SrvDir.py",
> line 84, in get
>     val = val.getobj()
>   File "/usr/local/lib/python2.6/dist-packages/xen/web/SrvDir.py",
> line 52, in getobj
>     self.obj = klassobj()
>   File "/usr/local/lib/python2.6/dist-packages/xen/xend/server/SrvNode.py",
> line 30, in __init__
>     self.xn = XendNode.instance()
>   File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendNode.py",
> line 1015, in instance
>     inst.save()
>   File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendNode.py",
> line 485, in save
>     self.save_networks()
>   File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendNode.py",
> line 500, in save_networks
>     for network_uuid in XendNetwork.get_all()])
>   File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendBase.py",
> line 102, in get_record
>     for key in keys])
>   File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendNetwork.py",
> line 196, in get_VIFs
>     vms = XendDomain.instance().get_all_vms()
>   File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendDomain.py",
> line 1739, in instance
>     inst.init()
>   File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendDomain.py",
> line 123, in init
>     dom0 = XendDomainInfo.recreate(dom0info, True)
>   File "/usr/local/lib/python2.6/dist-packages/xen/xend/XendDomainInfo.py",
> line 206, in recreate
>     vm.image = image.create(vm, vm.info)
>   File "/usr/local/lib/python2.6/dist-packages/xen/xend/image.py",
> line 66, in create
>     return findImageHandlerClass(vmConfig)(vm, vmConfig)
>   File "/usr/local/lib/python2.6/dist-packages/xen/xend/image.py",
> line 98, in __init__
>     self.configure(vmConfig)
>   File "/usr/local/lib/python2.6/dist-packages/xen/xend/image.py",
> line 680, in configure
>     ImageHandler.configure(self, vmConfig)
>   File "/usr/local/lib/python2.6/dist-packages/xen/xend/image.py",
> line 111, in configure
>     if vmConfig['use_tmp_kernel']:
> KeyError: 'use_tmp_kernel'
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel

Re: KeyError: 'use_tmp_kernel' with -unstable

[Andreas Florath]

Hello!

IMHO the bug is, that not in all code paths the 'use_tmp_xxx' is set. 
So a more robust if-statement would be
  if 'use_tmp_xxx' in vmConfig ...

You reported, that this error occurred during the start of xend. Is it
possible, that there were one/some VMs which were started directly
during the startup of xend?  If so, can you please provide some
information about the VMs: OS / Distributuion / PV or HVM? (If not so,
I'm a little bit confused, because the 'use_tmp_xxx' were build up in
the VM start path and in the stack trace there is at least one 'recreate'.)

Background:
The 'data:' and 'schema:' handling feature was removed from the
repository because of this bug report.  But before providing a corrected
version, I want to be sure that I'll get all aspects  of this error
report - especially I want to extend my local regression test suite.

Kind regards

Andreas Florath

Re: KeyError: 'use_tmp_kernel' with -unstable

[Jun Koi]

On Mon, Jul 27, 2009 at 6:09 AM, Andreas Florath<xen@flonatel.org> wrote:
> Hello!
>
> IMHO the bug is, that not in all code paths the 'use_tmp_xxx' is set.
> So a more robust if-statement would be
>  if 'use_tmp_xxx' in vmConfig ...
>
> You reported, that this error occurred during the start of xend. Is it
> possible, that there were one/some VMs which were started directly
> during the startup of xend?

No, my xend doesnt start any VM during its boot.

And after Keir revert that patch, Xen work perfectly!

Thanks,
J

Re: KeyError: 'use_tmp_kernel' with -unstable

[Andreas Florath]

Hello!

Had a closer look at this - and it looks that the 'recreate' is related
to the dom0. So should be easy to re-test.

Thanks a lot for your answer.

Andreas Florath