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OpenStack and Xen

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3 fév. 2015
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Xen and OpenStack
Xen and OpenStack
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OpenStack and Xen

3 fév. 2015
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OpenStack and Xen

  1. 1. OpenStack and Xen Stefano Stabellini & Anthony Perard Feb 2015
  2. 2. © 2014 Citrix. Confidential.2 Why Xen? Xen is a type-1 hypervisor small footprint (Less then 100K LOC) GPLv2 Powers the largest public cloud in production (>50% of vendors listed in Gartner 2014 Cloud magic quadrant, more in terms of hosts)
  3. 3. © 2014 Citrix. Confidential.3 Make Xen the best hypervisor for OpenStack
  4. 4. © 2014 Citrix. Confidential.4 OpenStack
  5. 5. © 2014 Citrix. Confidential.5 OpenStack
  6. 6. © 2014 Citrix. Confidential.6 OpenStack
  7. 7. © 2014 Citrix. Confidential.7 OpenStack
  8. 8. © 2014 Citrix. Confidential.8 OpenStack
  9. 9. © 2014 Citrix. Confidential.9 OpenStack
  10. 10. © 2014 Citrix. Confidential.10 OpenStack
  11. 11. © 2014 Citrix. Confidential.11 OpenStack
  12. 12. © 2014 Citrix. Confidential.12 Status and Goals Xen via Libvirt is currently in Group C Goals: • Xen should be a great platform for OpenStack production deployments • Get Xen via Libvirt in Group A within 1 year • Xen should be a great platform for OpenStack development and hacking • devstack should deploy Xen and OpenStack
  13. 13. © 2014 Citrix. Confidential.13 From 0 to Xen and OpenStack 1. Install Ubuntu 14.04 LTS 2. Install Xen apt-get install xen-hypervisor-4.4-amd64 3. git clone devstack && configure it to use Xen LIBVIRT_TYPE=xen 4. ./stack.sh
  14. 14. © 2014 Citrix. Confidential.14 From 0 to Xen and OpenStack What we actually did 1. Install Ubuntu 14.04 LTS 2. Install Xen apt-get install xen-hypervisor-4.4-amd64 3. git clone devstack && configure it to use Xen LIBVIRT_TYPE=xen 4. ./stack.sh 5. Fix Bugs!!
  15. 15. © 2014 Citrix. Confidential.15 Bugs 2 Xen related bug in Nova 1 Xen related bug in Libvirt Stability issues with libvirt 1.2.2-0ubuntu13.1.8 under stress
  16. 16. © 2014 Citrix. Confidential.16 Bugs 2 Xen related bug in Nova 1 Xen related bug in Libvirt Stability issues with libvirt 1.2.2-0ubuntu13.1.8 under stress FIXED!
  17. 17. © 2014 Citrix. Confidential.17 Bugs 2 Xen related bug in Nova 1 Xen related bug in Libvirt Stability issues with libvirt 1.2.2-0ubuntu13.1.8 under stress FIXED!
  18. 18. © 2014 Citrix. Confidential.18 Latest Update 2 patches under review for Nova 1 patch upstream in Libvirt  everything works out of the box! Using the latest OpenStack and libvirt trees  Tempest runs and *all* tests pass!
  19. 19. © 2014 Citrix. Confidential.19 Tuning OpenStack and Xen • Dom0 Memory: 1-4G dom0_mem=1024M • Dom0 vcpus: 4 dom0_max_vcpus=4 dom0_vcpus_pin • use LVM for local storage VOLUME_GROUP=volume_group_name • PV vs HVM guests nova image-meta set vm_mode=HVM nova image-meta delete vm_mode
  20. 20. © 2014 Citrix. Confidential.20 More information www.xenproject.org wiki.xenproject.org wiki.xenproject.org/wiki/Tuning_Xen_for_Performance wiki.xenproject.org/wiki/OpenStack http://lists.xenproject.org/mailman/listinfo/xen-devel
  21. 21. Demo
  22. 22. © 2014 Citrix. Confidential.22 Questions?
  23. 23. © 2014 Citrix. Confidential.23 WORK BETTER. LIVE BETTER.

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