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feat(ha-term-safety): retire term-0 repl_broadcast live send; carry leader term on replication (task 3.4)

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Closes bug-990: the live replicator repl_broadcast wire-encoded term=0
(entry.term was never set), so standbys persisted hdr.term=0 and took the
legacy direct-apply path instead of the library (term,lsn) intake. Now the
live broadcast and catch-up streamer carry the leader's real term + AE prev
tuple; ha_apply_wal_catchup_entry routes every term-carrying entry through
raft_on_append_entries_request -> on_persist_entry (leader term stamped),
retiring the term-0 direct-apply. Standbys now persist the leader's real term
and reconcile by (term,lsn); the live commit chain is end-to-end.

848/849/850 + persist-before-ACK + commit-barrier + bug-960 preserved.
Proven at integration level; the definitive live STRICT_TERM failover run is
env-blocked here (bug-924 overlayfs) and recommended on a real fs.
This commit is contained in:
Rongsong Shen 2026-06-22 15:45:14 +00:00
parent 87242aa8e9
commit efe621c124
11 changed files with 307 additions and 45 deletions
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2
src/controller/testsuite/test_convergence_verification.c
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@ -754,7 +754,7 @@ static int cv_broadcast_one(replicator_t *r, uint64_t lsn)
hdr.lsn = lsn;
hdr.type = WAL_NOOP;
hdr.payload_len = 0;
return repl_broadcast(r, &hdr, NULL, 0);
return repl_broadcast(r, &hdr, NULL, 0, 0 /* prev_log_term */);
}
/* (a) umbrella 6.1: repl_broadcast enqueues to EVERY registered active standby