From b3a156858ab03cb5f9c55dedcaf85a6249b3ec64 Mon Sep 17 00:00:00 2001 From: Michael Paquier Date: Thu, 28 Feb 2019 11:02:11 +0900 Subject: [PATCH] Improve documentation of data_sync_retry Reflecting an updated parameter value requires a server restart, which was not mentioned in the documentation and in postgresql.conf.sample. Reported-by: Thomas Poty Discussion: https://postgr.es/m/15659-0cd812f13027a2d8@postgresql.org --- doc/src/sgml/config.sgml | 3 ++- src/backend/utils/misc/postgresql.conf.sample | 4 +++- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index 1c3b7affa9..6d42b7afe7 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -8791,7 +8791,8 @@ dynamic_library_path = 'C:\tools\postgresql;H:\my_project\lib;$libdir' When set to off, which is the default, PostgreSQL will raise a PANIC-level error on failure to flush modified data files - to the filesystem. This causes the database server to crash. + to the filesystem. This causes the database server to crash. This + parameter can only be set at server start. On some operating systems, the status of data in the kernel's page diff --git a/src/backend/utils/misc/postgresql.conf.sample b/src/backend/utils/misc/postgresql.conf.sample index 194f312096..bd6ea65d0c 100644 --- a/src/backend/utils/misc/postgresql.conf.sample +++ b/src/backend/utils/misc/postgresql.conf.sample @@ -719,7 +719,9 @@ #exit_on_error = off # terminate session on any error? #restart_after_crash = on # reinitialize after backend crash? -#data_sync_retry = off # retry or panic on failure to fsync data? +#data_sync_retry = off # retry or panic on failure to fsync + # data? + # (change requires restart) #------------------------------------------------------------------------------