Rongsong Shen e80abd5cc4 docs(raft-ha-core-safety): unify 7.2 round-N blocker via gdb — one restart-stability bug (SIGSEGV / iomgr accept-hang) ... Used the now-available gdb (wrapped the release controller under gdb -batch via XCE_HA_BIN) to expose the round-4 blocker's second face. Findings: - The release-build SIGSEGV and a gdb-run accept-loop HANG are the SAME restart- time I/O-subsystem corruption: under gdb the memory bug is perturbed away from a crash and instead wedges the inbound-accept path (ctrl-3 stops accepting at 03:42:03 while still firing its own election timer), so two restarted survivors can never exchange PreVotes -> permanent round-N stall. - This is a restart-STABILITY bug, NOT a consensus-logic gap: PreVote/eligibility/ freshness (incl. 5.3) are correct; the restarted node is simply I/O-dead. It predates this session (baseline 21e26a1 failed round 3-4). - Heisenbug: invisible under ASAN and under gdb; no usable core (read-only core_pattern -> non-running systemd-coredump). Needs a non-ASAN DEBUG (-O0 -g) build under gdb, or a host with a live coredump pipeline, to backtrace. Updates research.md, refines task 5.4 (the unified restart-stability bug + the debug-build path), updates bug-1281. Consensus correctness (Phase-2/5.2/5.3) is unaffected and validated for every round that completes (2-round soak PASSES; 6-round rounds 1-3 elect; zero job loss; committed prefix byte-identical). Co-Authored-By: Claude <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019dbTHR9CsEYK9RsqmQpQpC		2026-06-30 03:57:51 +00:00
..
settings	finalize configuration replication	2026-06-09 16:40:13 +08:00
specs	docs(raft-ha-core-safety): unify 7.2 round-N blocker via gdb — one restart-stability bug (SIGSEGV / iomgr accept-hang)	2026-06-30 03:57:51 +00:00
steering	docs(steering): sync HA protocol with ha-term-safety — per-entry term, (term,lsn) reconcile, commit-source ownership, bug-828 truncate rule	2026-06-23 04:48:06 +00:00