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feat(raft-drive-async): LivenessAdmission pool reservation + commit fold (tasks 1.6/1.7)

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vtaskmgr gains vtask_class_t (LIVENESS/LIVE_BLOCK/REQ_BLOCK) + a pool-level
blocking reservation: REQ_BLOCK fast-rejects -XCE_ERR_NOT_READY past
n_vcpus-R; LIVENESS never gated (deadlock-freedom). commit_submit folds its
inflight_waits onto the pool via commit_set_pool; production wired in
cluster.c phase2 (vtaskmgr_set_liveness_reserved(R) + commit_set_pool).
Lock order p->lock->ce->lock->blk_lock. Dormant until 3.1. Commit suites
38/30/22/38 green; lib 282/0, controller 196/0, ASAN clean. Phase 1 done.
This commit is contained in:
Rongsong Shen 2026-06-26 07:43:19 +00:00
parent 0781c6c027
commit a36234a103
12 changed files with 721 additions and 22 deletions
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9
src/controller/cluster.c
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@ -1353,6 +1353,15 @@ int cluster_init_phase2(cluster_t* c)
"commit/REQ_BLOCK cap=%d)",
liveness_reserved, c->ha.n_peers, c->vtaskmgr.n_vcpus,
c->vtaskmgr.n_vcpus - liveness_reserved);
/* raft-drive-async task 1.6: install the pool-level LivenessAdmission
* reservation and fold commit-wait admission onto it. The pool now owns
* the single reservation; commit_submit(WAIT) acquires a pool blocking
* slot (cap = n_vcpus - liveness_reserved) instead of the local
* COMMIT_WAIT_RESERVED cap. Dormant beyond the commit cap-value change
* until peer_ctrl dispatches classified tasks (task 3.1). */
vtaskmgr_set_liveness_reserved(&c->vtaskmgr, liveness_reserved);
commit_set_pool(&c->commit, &c->vtaskmgr);
if (c->vtaskmgr.n_vcpus < c->ha.n_peers) {
/* Under-provisioned: the n_vcpus ceiling clamped the reservation
* below the ideal n_peers-1. Still correct (deadlock-free via fast