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Improve how node roles are assigned in Garage

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- change the terminology: the network configuration becomes the role
  table, the configuration of a nodes becomes a node's role
- the modification of the role table takes place in two steps: first,
  changes are staged in a CRDT data structure. Then, once the user is
  happy with the changes, they can commit them all at once (or revert
  them).
- update documentation
- fix tests
- implement smarter partition assignation algorithm

This patch breaks the format of the network configuration: when
migrating, the cluster will be in a state where no roles are assigned.
All roles must be re-assigned and commited at once. This migration
should not pose an issue.
This commit is contained in:
Alex Auvolat
2021-11-09 12:24:04 +01:00
parent 53888995bd
commit c94406f428
42 changed files with 1430 additions and 557 deletions
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src/util/Cargo.toml
+2 -1
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@@ -1,11 +1,12 @@
[package]
name = "garage_util"
version = "0.4.0"
version = "0.5.0"
authors = ["Alex Auvolat <alex@adnab.me>"]
edition = "2018"
license = "AGPL-3.0"
description = "Utility crate for the Garage object store"
repository = "https://git.deuxfleurs.fr/Deuxfleurs/garage"
readme = "../../README.md"
[lib]
path = "lib.rs"