Creation of new volume should require specifying a zone #267
Description
Right now the zone is implicitly set to default.
Consider you have these volumes right now:
| Volume | Zone |
|---|---|
| HDD A | Home |
| HDD B | Home |
| AWS S3 | Cloud |
Now after provisioning HDD C it would look like this:
| Volume | Zone | Zone (what we meant) |
|---|---|---|
| HDD A | Home | Home |
| HDD B | Home | Home |
| HDD C | default | Home |
| AWS S3 | Cloud | Cloud |
We accidentally added 3rd zone, which would incorrectly satisfy this replication policy:
- Put new data in: HDD B + HDD C
- Min# of zones: 2
Even though data is really in one zone. This bug has data safety implications.