[Bug 1524737] Re: systemd presents hugetblfs at /dev/hugepages

[ChristianEhrhardt]

Uh that was even Thiago, but Nish was the one who sent me a mail to read
through - thank you both!

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https://bugs.launchpad.net/bugs/1524737

Title:
  systemd presents hugetblfs at /dev/hugepages

Status in libvirt package in Ubuntu:
  Fix Released

Bug description:
  ==============================================
  SRU Justification
  Impact: libvirt unable to grant access to hugepages
  Fix: add an apparmor rule to allow libvirt to access hugepages at the path which systemd uses
  Test case: boot a vm with hugepages enabled.
  Regression potential:  We already have an allow rule for the old hugepages mount path, we are only allowing access to the path which systemd uses.  So there should be no regressions.
  ==============================================

  If a system is configured to allocate hugepages on boot, systemd will
  automatically present a hugetblfs at /dev/hugepages

  This is not compatible with the current apparmor profile which expects
  presentation at /var/run/hugepages.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: libvirt-bin 1.2.21-2ubuntu1
  ProcVersionSignature: Ubuntu 4.3.0-2.11-generic 4.3.0
  Uname: Linux 4.3.0-2-generic x86_64
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
  ApportVersion: 2.19.2-0ubuntu9
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Dec 10 11:16:28 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-11-25 (379 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20141124)
  SourcePackage: libvirt
  UpgradeStatus: Upgraded to xenial on 2015-11-02 (38 days ago)
  modified.conffile..etc.libvirt.qemu.conf: [inaccessible: [Errno 13] Permission denied: '/etc/libvirt/qemu.conf']
  modified.conffile..etc.libvirt.qemu.networks.default.xml: [inaccessible: [Errno 13] Permission denied: '/etc/libvirt/qemu/networks/default.xml']

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