Description Timo Denissen 2019-06-07 13:34:27 CEST

Running on laiva (internal UVMM host):
UCS: 4.4-0 errata142
Installed: uvmm=7.0 uvmm-ec2=1.0
Upgradable:

Every now and then UVMM stops working properly, the UMC services must be restarted to make UVMM work again.

From the internal report to the point of restarting, the logfile /var/log/univention/virtual-machine-manager-daemon.log got these messages every 30-45 seconds:

2019-06-07 12:12:20,570 - uvmmd.node - WARNING - Failed to query job status ff5a18ae-3c77-4ed3-afa5-1a115a523ee0: Timed out during operation: cannot acquire state change lock (held by remoteDispatchDomainCreate)

Shortly around the restart this traceback comes up:

2019-06-07 12:26:16,010 - uvmmd.unix - ERROR - [3680] Exception: [Errno 32] Broken pipe
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.7/univention/uvmm/unix.py", line 118, in handle
    self.wfile.write(packet)
  File "/usr/lib/python2.7/socket.py", line 328, in write
    self.flush()
  File "/usr/lib/python2.7/socket.py", line 307, in flush
    self._sock.sendall(view[write_offset:write_offset+buffer_size])
error: [Errno 32] Broken pipe

After the restart everything works fine.