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feat(raft-drive-async): add drive-async config constants + liveness-reservation helper (task 1.1)

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drive_async_liveness_reserved = max(1, min(n_peers-1, n_vcpus-1)) — single
source of truth for VTASK_LIVENESS_RESERVED (deadlock-freedom floor applied
last). New DEFAULT_CONNECT_TIMEOUT_MS / DEFAULT_SLOWLANE_* constants. Resolved
reservation logged at init; under-provisioned (n_vcpus<n_peers) clamp WARNs
loudly, never self-terminates. 8 unit cases, mutation-verified.
This commit is contained in:
Rongsong Shen 2026-06-26 04:58:07 +00:00
parent 295769d8ae
commit 729055a37f
8 changed files with 329 additions and 0 deletions
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src/controller/meson.build
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@ -139,6 +139,7 @@ controller_unit_test_src = [
'testsuite/test_ha_heartbeat_committed.c',
'testsuite/test_ha_vote_floor_heartbeat.c',
'testsuite/test_term_safety_adapter.c',
'testsuite/test_drive_async_config.c',
'testsuite/test_waldump.c',
'testsuite/waldump.c',
'testsuite/test_walcompare.c',