From: Fujii Masao Date: Thu, 3 Jul 2025 14:07:23 +0000 (+0900) Subject: doc: Update outdated descriptions of wal_status in pg_replication_slots. X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=db51bdf975e28003f08013a12bc46c0848533edc;p=thirdparty%2Fpostgresql.git doc: Update outdated descriptions of wal_status in pg_replication_slots. The documentation for pg_replication_slots previously mentioned only max_slot_wal_keep_size as a condition under which the wal_status column could show unreserved or lost. However, since commit be87200, replication slots can also be invalidated due to horizon or wal_level, and since commit ac0e33136ab, idle_replication_slot_timeout can also trigger this state. This commit updates the description of the wal_status column to reflect that max_slot_wal_keep_size is not the only cause of the lost state. Back-patched to v16, where the additional invalidation cases were introduced. Author: Fujii Masao Reviewed-by: Hayato Kuroda Reviewed-by: Nisha Moond Discussion: https://postgr.es/m/78b34e84-2195-4f28-a151-5d204a382fdd@oss.nttdata.com Backpatch-through: 16 --- diff --git a/doc/src/sgml/system-views.sgml b/doc/src/sgml/system-views.sgml index 9b8d07b2b71..328bdfdd152 100644 --- a/doc/src/sgml/system-views.sgml +++ b/doc/src/sgml/system-views.sgml @@ -2478,20 +2478,18 @@ SELECT * FROM pg_locks pl LEFT JOIN pg_prepared_xacts ppx unreserved means that the slot no longer retains the required WAL files and some of them are to be removed at - the next checkpoint. This state can return + the next checkpoint. This typically occurs when + is set to + a non-negative value. This state can return to reserved or extended. - lost means that some required WAL files have - been removed and this slot is no longer usable. + lost means that this slot is no longer usable. - The last two states are seen only when - is - non-negative.