Thank you very much. . And Andrew Laski has answer my second question.
2016-01-08 20:33 GMT+08:00 John Garbutt <j...@johngarbutt.com>: > On 8 January 2016 at 08:17, 少合冯 <lvmxhs...@gmail.com> wrote: > > Hi, all > > > > Now I'm working on the migrations list/show API. > > The new api defines migrations is a sub-collection of an instance. > > GET v2.1/tenant_id/servers/server-id/migrations/migration-id > > > > I need to support the new cell API to get a migration of a specified > > instance. > > get_migration_by_instance_and_id > > > > I read up the nova cell doc. > > http://docs.openstack.org/developer/nova/cells.html > > > > It tells us that, the migrations table will be API-level. > > The instances table is Cell-level. > > So does that means that we can do live migration cross cells? > > In sort, you can't currently live-migrate between cells. > > So there is the current cells v1. When using cells v1 you will never > be able to move between cells. In addition, when using nova-network, > network assumptions generally mean IPs can't move between cells. > > In cells v2, we were talking about ways that could happen. Its still > hard, because you would need to copy the instance record between one > cell database to another, with the API understanding how the move is > going. Complexity best avoided, if possible. > > > And also this will affect my code. > > If the migrations is API-level, so I do not need a cell name to get the > > migrations info from DB. > > > > Or I need to get the cell name by the specified instance, and then get > the > > migrations info by _TargetedMessage. > > Afraid I don't have enough context from the rest of your email to > answer these questions. > > Thanks, > John >
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