[Openstack] multi-nic blueprint - data migration

Ishimoto, Ryu ryu at midokura.jp
Mon Mar 28 06:31:21 UTC 2011

Hi All,

I was looking at the multi-nic blueprint(
https://blueprints.launchpad.net/nova/+spec/nova-multi-nic), and in

1) removing mac_address column from the instances table and creating a
mac_addresses table. This is for storing which instances own which mac
addresses as well as which network each mac is for.

What happens(or should happen) to the MAC addresses that are already
associated with instances?  Will they be migrated to the new mac_addresses
table?  Or will they be discarded completely?

I was curious to know how Nova usually handles data migration issues like

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