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[Launchpad Bug Tracker <1118457@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/1118457

Title:
  Simultaneous launch of multiple instances from horizon leads to
  multiple LANs assigned to new tenant

Status in OpenStack Compute (nova):
  Expired

Bug description:
  Using folsom and VlanManager, if one launches multiple vm for a new
  tenant/project by setting the number of instances to 4 or 5 then there
  is a race condition and potentially two or more vlan/networks are
  assigned to one tenant.

  It seems to me that the assignment of a network to a tenant is lazy evaluated until the first instance for the project is launched.  This
  can be confirmed by creating a new tenant and then doing 'nova-manage network list'.

  After launching the vms this is the output of 'nova-manage network list', showing the multiple vlans assigned to the same tenant:
  id      IPv4                    IPv6            start address   DNS1            DNS2            VlanID          project         uuid
  1       172.17.0.0/24           None            172.17.0.3      None            None            143             cc76e58acf6741d5a7238b74473c6a9d        f43f2aab-80c1-4efe-a57a-65927b192bc5
  2       172.17.1.0/24           None            172.17.1.3      None            None            144             aeecc883b1a34e3cbc0ba1f5f6deae51        b0ebbe87-5554-42a2-8a2b-b68fde29e6bd
  3       172.17.2.0/24           None            172.17.2.3      None            None            145             aeecc883b1a34e3cbc0ba1f5f6deae51        e9a5c116-eb56-4c23-9018-6f2a2107356b
  4       172.17.3.0/24           None            172.17.3.3      None            None            146             dda25aeeb8cf4bb099ba7982ce05520c        51d51655-8231-4d72-b880-3bc40e6ef027
  5       172.17.4.0/24           None            172.17.4.3      None            None            147             dda25aeeb8cf4bb099ba7982ce05520c        073d948b-2ee2-4da2-8b90-ca47fac52854
  6       172.17.5.0/24           None            172.17.5.3      None            None            148             None            a23fe5a0-44b6-45e8-a32b-9bb249588426

  There is some discussion of the issue here:
  http://lists.openstack.org/pipermail/openstack-dev/2013-February/005473.html

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