# design 7 V-G2: grey zone, VM. Pause WAL replay on db-replica; no SLO impact, only DbReplicationLag fires. Correct: db.replay_resume after approval.
id: V-G2
path: gray
asset: vm
expected_layer: 2
ground_truth_label: replication_paused
ground_truth_action: db.replay_resume
description: SELECT pg_wal_replay_pause() on db-replica (harness role)
inject:
  method: psql
  host: db-replica
  database: postgres
  sql: SELECT pg_wal_replay_pause()
revert:
  method: psql
  host: db-replica
  database: postgres
  sql: SELECT pg_wal_replay_resume()