[Xen-users] Sometimes unable to reboot VM

[Rob Lampe <rlampe@xxxxxxxxxxxxx>]

Xen Version: 4.2.0
Linux Kernel Version: 3.2.30
OS: Debian 6.0

Sometimes when trying to reboot a VM, the reboot fails with the following message in xend.log: Has anyone experienced this issue before, know the cause and/or fix? This is an HVM VM. Device model is set in the configuration file

device_model = '/usr/lib/xen/bin/qemu-dm'

We use the same configuration file with earlier versions of Xen and do not have this issue.

Thank you,

[2012-11-08 15:17:33 2381] DEBUG (XendDomainInfo:2407) No device model
[2012-11-08 15:17:33 2381] DEBUG (XendDomainInfo:2409) Releasing devices
[2012-11-08 15:17:33 2381] ERROR (XendDomainInfo:130) Domain construction failed
Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-

packages/xen/xend/XendDomainInfo.py", line 128, in create_from_dict
    vm.start()
  File "/usr/lib/python2.6/dist-packages/xen/xend/XendDomainInfo.py", line 473, in start
    XendTask.log_progress(0, 30, self._constructDomain)
  File "/usr/lib/python2.6/dist-packages/xen/xend/XendTask.py", line 209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/lib/python2.6/dist-packages/xen/xend/XendDomainInfo.py", line 2576, in _constructDomain
    self._recreateDom()
  File "/usr/lib/python2.6/dist-packages/xen/xend/XendDomainInfo.py", line 1730, in _recreateDom
    complete(self.dompath, lambda t: self._recreateDomFunc(t))
  File "/usr/lib/python2.6/dist-packages/xen/xend/xenstore/xstransact.py", line 364, in complete
    if t.commit():
  File "/usr/lib/python2.6/dist-packages/xen/xend/xenstore/xstransact.py", line 41, in commit
    rc = xshandle().transaction_end(self.transaction, False)
Error: (2, 'No such file or directory')
[2012-11-08 15:17:33 2381] ERROR (XendDomainInfo:2235) Failed to restart domain 70.
Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/xen/xend/XendDomainInfo.py", line 2218, in _restart
    new_dom_info)
  File "/usr/lib/python2.6/dist-packages/xen/xend/XendDomain.py", line 1017, in domain_create_from_dict
    dominfo = XendDomainInfo.create_from_dict(config_dict)
  File "/usr/lib/python2.6/dist-packages/xen/xend/XendDomainInfo.py", line 128, in create_from_dict
    vm.start()
  File "/usr/lib/python2.6/dist-packages/xen/xend/XendDomainInfo.py", line 473, in start
    XendTask.log_progress(0, 30, self._constructDomain)
  File "/usr/lib/python2.6/dist-packages/xen/xend/XendTask.py", line 209, in log_progress
    retval = func(*args, **kwds)
  File "/usr/lib/python2.6/dist-packages/xen/xend/XendDomainInfo.py", line 2576, in _constructDomain
    self._recreateDom()
  File "/usr/lib/python2.6/dist-packages/xen/xend/XendDomainInfo.py", line 1730, in _recreateDom
    complete(self.dompath, lambda t: self._recreateDomFunc(t))
  File "/usr/lib/python2.6/dist-packages/xen/xend/xenstore/xstransact.py", line 364, in complete
    if t.commit():
  File "/usr/lib/python2.6/dist-packages/xen/xend/xenstore/xstransact.py", line 41, in commit
    rc = xshandle().transaction_end(self.transaction, False)
Error: (2, 'No such file or directory')



Xen configuration file:

kernel = '/usr/lib/xen/boot/hvmloader'
builder = 'hvm'
memory = 512
vcpus = 2
name = 'ie3d'
pae = 1
acpi = 1
apic = 1
device_model = '/usr/lib/xen/bin/qemu-dm'
boot = 'nc'
sdl = 0
usb = 1
usbdevice = 'tablet'
vnc = 1
vnclisten = '0.0.0.0'
vncdisplay = 749
vncunused = 0
vncpasswd = 'JJw1ZHwQ'
serial = 'pty'
vif = ['mac=00:16:3e:6c:95:10, model=e1000, type=ioemu, bridge=pub700','mac=00:16:3e:3f:0b:ea, model=e1000, type=ioemu, bridge=pri700']
disk = ['phy:/dev/xenvg/b50c49fd-31d2-491d-82e7-ab02d272390e.disk0,hda,w']
>>>

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