yahoo-eng-team team mailing list archive

[John Garbutt <john.garbutt@xxxxxxxxxxxxx>]

Blueprint changed by John Garbutt:

Whiteboard changed:
  Once host-aggregates is complete, we can use the XenServer/XCP pool
  concept, along with shared storage configured as the default storage on
  that pool, to allow live migration of some images.
  
  Currently Amazon style three part images are loaded into Dom0's file
  system, so there would need to be lots of work to copy these between the
  hosts to ensure the VM can boot.
  
  As a first step, it is best to concentrate on images without an external
  kernel and ramdisk.
  
  ****
  
  Currently working in this branch:
  https://github.com/citrix-openstack/nova/tree/live-migration-trunk
  
  ****
  
  Here is what I plan to do next:
  * Step 1: Pool-based live migration (pool/host-aggregate, requires shared storage is default SR)
- * Step 2: Live migration between standalone hosts using EXT SR
-                  (Depends on feature coming to XCP & XenServer in H2 2012)
- * Step 3: Consider live-migration without explicitly specifying the destination host (like migrate)
- * Step 4: Add tests into Tempest for live migration
+ * Step 2: Refactor live migration checks so libvirt checks are not in common code path
+ * Step 3: Add tests into Tempest for live migration
  
  Maybe things for post-Folsom:
- * Support live-migration between pools
  * Support live migration with external ram disk and kernel
+ * Live-migration without specifying the destination

-- 
XenServer (xenapi) live migration support
https://blueprints.launchpad.net/nova/+spec/xenapi-live-migration