LCU14 BURLINGAME

A. McDermott & M. Hudson-Doyle, LCU14

LCU14-300: OpenStack and KVM on ARM servers

OpenStack running OpenJDK JTREG testing

LXC 0..3

OpenStack Cloud Controller

Compute Node 0

Compute Node 1

● 3x APM Mustang boards running Ubuntu Trusty 14.04● All services deployed with juju● Mustang 01 as cloud controller and jenkins master with LXC● Mustang 02 and 03 as OpenStack compute nodes with KVM

● Run a subset of the OpenJDK JTREG test regression harness● jenkins dynamically provisions SIX VM’s instances via OpenStack on Mustang 2 and 3● the VM’s are destroyed upon test completion

Demo Overview

Openstack via KVM on ARMv8● Configuration and Deployment

● Possible to install on Ubuntu 14.04 either via juju or using devstack● Tweaks are necessary: ● Also installing on a single node with 1 NIC is not completely straightforward - nothing to

do with ARMv8● Depending the platform enablement more than 1 NIC can be supported - eg for management

+ public network (works on HP Moonshot)● Deployment with MAAS + juju is work in progress

● Out of band management issue for Mustang

● Administration● All use cases seem to be working

● Openstack identity service● Works - all relevant Tempest cases pass

● Openstack nova● Assuming images are set up correctly it works. Launching instances with ephemeral

storage does not work

It’s running on ARM 64-bit now!

http://www.ca.com/us/lpg/ca-technology-exchange/sunny-outlook-for-openstack-clouds.aspx

Openstack via KVM on ARMv8● Openstack storage

● Basic setup of swift on a single storage node passes all Tempest tests● Openstack image service

● Glance passes all Tempest tests and appears to work ok for basic operations● Openstack networking

● nova-network (with FlatDHCPManager) appears to work fine

● nova: "Support setting a machine type to enable ARMv7/AArch64 guests to boot"http://git.openstack.org/cgit/openstack/nova/commit/?id=15d4f8a3af1b4e105d91e6b66d7b19187fbd41af

OpenStack patches: only 114 lines in Nova

Thanks to Canonical engineers for their contribution!

● Known issues● suspend/resume/migration

● Currently no support for “live migration” of VMs on arm64 in QEMU or kvm● Should become enabled in Q4.2014

● Volume hotplugging● The currently supported models for arm64 virtual machines do not include any kind of

hotpluggable storage● Enablement expected in Q4.2014

● Absence of bootloader/image registration● On x86, QEMU can be used to emulate a BIOS (seabios) which boots grub which (as with a

physical machine) uses configuration within the image to specify the kernel, initrd (if any) and kernel parameters – with the kernel and initrd being read from the image itself

● On arm64 there is not yet a bootloader that can be used in this way – virtual machines are booted by specifying the kernel, initrd and kernel parameters on the qemu command line

● Block device ordering● On arm64, there is no emulation of IDE, and QEMU uses the “virtio” block device type. This

device type does not guarantee an ordering amongst the device types it emulates

Openstack on KVM/QEMU for ARMv8

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