[13:56] <smoser> Odd_Bloke, some data sources cannot change
[13:56] <smoser> and thus persisting is fine.
[13:56] <smoser> config-drive simply cannot be made to change. other ones do not change.
[13:57] <Odd_Bloke> smoser: Others definitely can change though (e.g. you can add SSH keys to a GCE instance).
[13:58] <smoser> right. and ec2 changes user-data during a stop
[13:58] <smoser> and meta-data is dynamic
[13:59] <smoser> so yeah. some stuff we dont want cached, but stuff we can only ever read once... (like the passwd) we'd probalby need to cache or consume the first time we read it.