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docs/coordinator: fix Create/Provision node-inventory staleness

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damocles 2026-09-02 01:35:03 +02:00 • committed by mara
commit d68d0e809e
1 changed files with 3 additions and 2 deletions
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5
docs/scheduler/coordinator.md
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@ -46,7 +46,7 @@ Nix-heavy — hold one of the `buildSlots` permits for the node's duration:
| ---------------- | ---------------------------------------------------------------------------------------------------------------------------------------------- |
| `Prebuild` | `lifecycle::prebuild_toplevel` — build the toplevel out-of-band while the container keeps serving (its meta preamble is the upstream `MetaSync` node) |
| `Swap` | drop-in rewrite + `nixos-container update` profile-swap (requires the container stopped); the post-swap bookkeeping tail lives in the sibling `RebuildBookkeeping` node |
| `Create` | first-spawn provisioning + `nixos-container create` (atomic build+create) |
| `Create` | first-spawn `nixos-container create` proper; assumes the upstream `Provision` node already registered the agent in meta |
| `MetaLock` | meta flake lock bump (`lock_update` / boot-sweep `lock_update_hyperhive`, commit fused — see below); fans out child `Rebuild` DAGs on completion |
| `DeployWindow` | resource-holding root of the merge-config-PR deploy subtree — declares the build slot, the lease and the meta window, then completes immediately so its children run under them (see _Approvals_ below) |
| `DeployApply` | the deploy's irreversible half: ff-merge the reviewed PR head, two-phase meta deploy, container rebuild |
@ -58,6 +58,7 @@ Cheap — no build slot:
| `MergeVerify` | the deploy's pre-merge gate — PR-head drift check, fetch, `verify_commit` eval. Mutates nothing, so a rejection here needs no compensation |
| `DeployTail` | the deploy's `AfterAny` compensation + bookkeeping tail — rolls `applied/main` back from the parked `refs/hyperhive/rollback/<id>` and aborts the staged meta lock when the deploy never confirmed good, then mirrors the config repo to the forge. Infallible by construction |
| `MetaSync` | the rebuild's meta preamble — rebuild-dir prep, idempotent meta `sync_agents`, optional per-agent relock. Holds the `MetaWindow` resource (below); deliberately its own node so the window never covers `Prebuild`'s multi-minute build |
| `Provision` | first-spawn pre-create provisioning — proposed/applied repos, state subvolume, meta registration (`sync_agents`); runs ahead of `Create` so the `nixos-container create --flake meta#<name>` ref resolves. Store/meta-only, no container yet |
| `Reconcile` | idempotent power converge: read `wanted` (below) + observed state; start if `Up` & down (cold-start fallback included), stop if `Offline` & up, else noop |
| `StopForUpdate` | mechanical `nixos-container stop` for the profile swap; never touches `wanted`; noop if already stopped |
| `RebuildBookkeeping` | the swap's Ok-only bookkeeping tail — rev marker, forge/matrix sync, manager kick, rescan, meta-inputs snapshot; `AfterOk(Swap)` so it runs only on a successful swap (the `Rebuilt` manager event is emitted by the DAG's `EmitRebuilt` tail node, not here) |
@ -130,7 +131,7 @@ stop(a..): online a: SetWanted(a,Off) → [Signal→Drain→ if graceful] Re
restart(a..): online a: [Signal→Drain→ if graceful] StopForUpdate(a) → Reconcile(a) (no SetWanted)
offline a: Reconcile(a) (nothing to stop; Reconcile converges to existing wanted)
start(a..): a: SetWanted(a,Up) → Reconcile(a) (down+stale ⇒ SetWanted(a,Up) → «rebuild subgraph»)
spawn(a): [wanted=Up at approve] Create(a) → WriteDropin(a) → Reconcile(a)
spawn(a): [wanted=Up at approve] Provision(a) → Create(a) → WriteDropin(a) → Reconcile(a)
perm-change(a): WritePermFile(a) → «rebuild subgraph»
meta-update(inp): MetaLock(inp) →(in-DAG) «rebuild subgraph» per affected agent
boot: (if any rev marker stale) MetaLock(hyperhive) →(in-DAG) «rebuild subgraph» per stale agent;