touch-packages team mailing list archive

[James Page <james.page@xxxxxxxxxx>]

I've re-titled this bug to be about effective interface MTU management
across MAAS and Juju; enabling Jumbo frames is something that we should
support in our core tooling and is critical for the successful operation
of a Neutron based OpenStack Cloud.

Combine this with LXC container spread across physical servers and right
now this is fiddly and error prone.

** Also affects: juju-core (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: juju-core (Ubuntu)
   Importance: Undecided => High

** Changed in: juju-core (Ubuntu)
       Status: New => Triaged

** Changed in: maas
       Status: Incomplete => New

** Summary changed:

- LXC containers reset bridge MTU on start/restart
+ Interface MTU management across MAAS/juju

** Tags added: landscape

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https://bugs.launchpad.net/bugs/1355813

Title:
  Interface MTU management across MAAS/juju

Status in juju-core:
  Triaged
Status in MAAS:
  New
Status in juju-core package in Ubuntu:
  Triaged
Status in lxc package in Ubuntu:
  Invalid

Bug description:
  Context:

  juju + MAAS deployed OpenStack environment, misc services deployed
  under LXC on the bootstrap node, interfaces configured for jumbo
  frames - note that I had to manually set the LXC container interfaces
  to mtu 9000 before the bridge would do the same.

  Action:

  Reboot one of the containers; MTU on br0 resets from 9000 -> 1500.

  This feels like more of a 'we need a better way to orchestrate MTU
  configuration across different services' so raising tasks for MAAS and
  Juju as well.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: lxc 1.0.5-0ubuntu0.1
  ProcVersionSignature: User Name 3.13.0-24.47-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.3
  Architecture: amd64
  Date: Tue Aug 12 13:26:00 2014
  KernLog:

  SourcePackage: lxc
  UpgradeStatus: No upgrade log present (probably fresh install)
  defaults.conf:
   lxc.network.type = veth
   lxc.network.link = lxcbr0
   lxc.network.flags = up
   lxc.network.hwaddr = 00:16:3e:xx:xx:xx
  lxcsyslog:

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