Infrastructure Software

Hello,

All of a sudden I am faced with the following problem:

[root@vmserver OVS]# xm list
Error: Unable to connect to xend: No such file or directory. Is xend running?
[root@vmserver OVS]# service xend status
xend daemon running (pid 4170)
[root@vmserver OVS]#

Contents of /var/log/xen/xend.log

[2010-07-29 15:46:34 4170] ERROR (SrvDaemon:349) Exception starting xend (no element found: line 1, column 0)
Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/xen/xend/server/SrvDaemon.py", line 341, in run
    servers = SrvServer.create()
  File "/usr/lib/python2.4/site-packages/xen/xend/server/SrvServer.py", line 251, in create
    root.putChild('xend', SrvRoot())
  File "/usr/lib/python2.4/site-packages/xen/xend/server/SrvRoot.py", line 40, in __init__
    self.get(name)
  File "/usr/lib/python2.4/site-packages/xen/web/SrvDir.py", line 84, in get
    val = val.getobj()
  File "/usr/lib/python2.4/site-packages/xen/web/SrvDir.py", line 52, in getobj
    self.obj = klassobj()
  File "/usr/lib/python2.4/site-packages/xen/xend/server/SrvNode.py", line 30, in __init__
    self.xn = XendNode.instance()
  File "/usr/lib/python2.4/site-packages/xen/xend/XendNode.py", line 1032, in instance
    inst = XendNode()
  File "/usr/lib/python2.4/site-packages/xen/xend/XendNode.py", line 69, in __init__
    saved_host = self.state_store.load_state('host')
  File "/usr/lib/python2.4/site-packages/xen/xend/XendStateStore.py", line 104, in load_state
    dom = minidom.parse(xml_path)
  File "/usr/lib/python2.4/site-packages/_xmlplus/dom/minidom.py", line 1915, in parse
    return expatbuilder.parse(file)
  File "/usr/lib/python2.4/site-packages/_xmlplus/dom/expatbuilder.py", line 926, in parse
    result = builder.parseFile(fp)
  File "/usr/lib/python2.4/site-packages/_xmlplus/dom/expatbuilder.py", line 211, in parseFile
    parser.Parse("", True)
ExpatError: no element found: line 1, column 0

When I check my VM Manager, the server is Unreachable.
This is all out of the blue, I had several VMs running when Xen crashed (?), but I wasn't working with the Manager or any xm configuration.
Also another strange thing was that my /OVS repository mount disappeared, no idea how that happened, but I am able to mount the location and no data seems to be lost.