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[Launchpad Bug Tracker <1568086@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package nova - 2:13.1.2-0ubuntu2

---------------
nova (2:13.1.2-0ubuntu2) xenial; urgency=medium

  [ dann frazier ]
  * d/p/libvirt-add-hugepages-support-for-Power.patch (LP: #1568086).
  * d/p/libvirt-add-hugepages-support-for-arm64.patch (LP: #1623871).

 -- Corey Bryant <corey.bryant@xxxxxxxxxxxxx>  Tue, 18 Oct 2016 13:56:15
-0400

** Changed in: nova (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1568086

Title:
  PPC64/hugepages is not supported by nova/libvirt driver.

Status in nova package in Ubuntu:
  Fix Released
Status in nova source package in Xenial:
  Fix Released

Bug description:
  [Impact]
  Nova does not recognize PPC64LE as an architecture that supports hugepaged-backed VMs.

  [Test Case]
  Steps to reproduce:
  On an openstack environment running on PPC64LE:
  1. Configure compute nodes to use hugepages, e.g.:
     echo 1024 | sudo tee /sys/kernel/mm/hugepages/hugepages-65536kB/nr_hugepages
  2. Set mem_page_size="65536" for a flavor
  3. Launch a VM using the above flavor.

  Expected result:
  VM should be launched with hugepages and the libvirt xml should have

    <memoryBacking>
        <hugepages>
          <page size='65536' unit='KiB' nodeset='0'/>
        </hugepages>
    </memoryBacking>

  Actual result:
  VM is launched without hugepages.

  There are no error logs in nova-scheduler.

  [Regression Risk]
  Risk is minimized by the fact that this change is just enabling the same code for ppc64el that is already enabled for Ubuntu/x86.

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