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a0e8548811
When commit 0f33a719fdbb5d8c43839ea0d2c90cd03e2af2d2 removed the instructions to start/stop the new cluster before running rsync, it was now possible for pg_resetwal/pg_resetxlog to leave the final WAL record at wal_level=minimum, preventing upgraded standby servers from reconnecting. This patch fixes that by having pg_upgrade unconditionally start/stop the new cluster after pg_resetwal/pg_resetxlog has run. Backpatch through 9.2 since, though the instructions were added in PG 9.5, they worked all the way back to 9.2. Discussion: https://postgr.es/m/20170620171844.GC24975@momjian.us Backpatch-through: 9.2