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[Launchpad Bug Tracker <1461642@xxxxxxxxxxxxxxxxxx>]

[Expired for OpenStack Compute (nova) because there has been no activity
for 60 days.]

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

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https://bugs.launchpad.net/bugs/1461642

Title:
  libvirt-xen: Race between nova and a Xen script for updating the
  iptables

Status in OpenStack Compute (nova):
  Expired

Bug description:
  This is with nova-network.

  When we create an instance, libxl (used by libvirt) is going to call a
  script to setup the vif, add it to the bridge, and update the
  iptables. Sometime, the iptables call in the script fail, with exit
  status 4, and this result in an instance creation failure. (Nova would
  only report: "libvirtError: internal error: libxenlight failed to
  create new domain")

  The script is:
  /etc/xen/scripts/vif-bridge
  (or xen.git/tools/hotplug/Linux/vif-bridge)

  One way if fixing this would be to have libxl call a different script
  provided by OpenStack which could take a lock.

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