Upgrade Garage cluster #590
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We're on a sub 1.0 version still, and we can't cleanly migrate to a new minimum-zones-write config either.
The idea is to create a completely new cluster with latest Garage and new zone config (3 zones read, minimum 2 zones write), and then simply import file dumps from the current buckets.
I think we should create the new cluster soon, with Chef code/updates in a branch until everything is switched.
For smaller, but more important buckets like e.g. remoteStorage and XMPP uploads, we don't need that much space right now. So we could immediately migrate that data to the safer cluster with more minimum write zones. Then, when we need more space, we can either reconfigure existing nodes for more space, or add more nodes.