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Prohibit max_slot_wal_keep_size to value other than -1 during upgrade.

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We don't want existing slots in the old cluster to get invalidated during
the upgrade. During an upgrade, we set this variable to -1 via the command
line in an attempt to prevent such invalidations, but users have ways to
override it. This patch ensures the value is not overridden by the user.

Author: Kyotaro Horiguchi
Reviewed-by: Peter Smith, Alvaro Herrera
Discussion: http://postgr.es/m/20231027.115759.2206827438943188717.horikyota.ntt@gmail.com
This commit is contained in:
Amit Kapila
2023-11-10 08:45:01 +05:30
parent 5ba1ac99a8
commit 8bfb231b43
4 changed files with 27 additions and 12 deletions
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2
src/backend/utils/misc/guc_tables.c
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@ -2845,7 +2845,7 @@ struct config_int ConfigureNamesInt[] =
},
&max_slot_wal_keep_size_mb,
-1, -1, MAX_KILOBYTES,
NULL, NULL, NULL
check_max_slot_wal_keep_size, NULL, NULL
},
{