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[Sean Dague <sean@xxxxxxxxx>]

** Changed in: nova
       Status: Incomplete => Invalid

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https://bugs.launchpad.net/bugs/1389938

Title:
  kvm instance can't be launched with '-serial pty' on Arm platform

Status in OpenStack Compute (Nova):
  Invalid
Status in nova package in Ubuntu:
  Expired

Bug description:
  1, version
  ubuntu@ms01a:~/ming$ uname -a
  Linux ms01a 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:10:54 UTC 2014 aarch64 aarch64 aarch64 GNU/Linux

  
  2, kvm instance can't be launched, and see below failure log in /var/log/nova/nova-compute.log:

  2014-11-05 21:58:58.480 781 INFO nova.compute.manager [-] [instance: 1e3bc825-b44f-47ee-b438-2fc06b133f5d] During sync_power_state the instance has a pending task. Skip.
  2014-11-05 21:58:58.697 781 ERROR oslo.messaging.rpc.dispatcher [-] Exception during message handling: internal error: early end of file from monitor: possible problem:
  qemu-system-aarch64: -serial pty: Failed to create chardev
  qemu: could not connect serial device to character backend 'pty'

  
  3, once I have done below change, the problem is fixed:

  nova/virt/libvirt/driver.py:
              #consolepty = vconfig.LibvirtConfigGuestSerial()
              #consolepty.type = "pty"
              #guest.add_device(consolepty)

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