oxidecomputer / oxidecomputer/omicron
Better define when a crucible volume can indicate all regions in a region set are valid
@jmpesp is already working on this.
Since Apr 23, 2026.
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- Rust
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Description
Currently we use the "activation" of a crucible upstairs as an indication that all three of the downstairs in the region set have been made consistent with each other. We use this state to determine that a region replacement has completed and a newly provided downstairs has been made consistent with the other existing downstairs.
When we activate with 2/3 downstairs (see PR https://github.com/oxidecomputer/crucible/pull/1733), that will mean that "activation" is no longer a guarantee that all three downstairs have been made consistent.
We need another solution that the control plane can use to know when a region replacement has reached a state that it is considered completed.
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