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Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/config.sgml | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml index fb5d6473efe..dc63d7d5e40 100644 --- a/doc/src/sgml/config.sgml +++ b/doc/src/sgml/config.sgml @@ -8184,6 +8184,38 @@ LOG: CleanUpLock: deleting: lock(0xb7acd844) id(24688,24696,0,0,0,1) </listitem> </varlistentry> + <varlistentry id="guc-wal-consistency-checking" xreflabel="wal_consistency_checking"> + <term><varname>wal_consistency_checking</varname> (<type>string</type>) + <indexterm> + <primary><varname>wal_consistency_checking</> configuration parameter</primary> + </indexterm> + </term> + <listitem> + <para> + This parameter is intended to be used to check for bugs in the WAL + redo routines. When enabled, full-page images of any buffers modified + in conjunction with the WAL record are added to the record. + If the record is subsequently replayed, the system will first apply + each record and then test whether the buffers modified by the record + match the stored images. In certain cases (such as hint bits), minor + variations are acceptable, and will be ignored. Any unexpected + differences will result in a fatal error, terminating recovery. + </para> + + <para> + The default value of this setting is the empty string, which disables + the feature. It can be set to <literal>all</literal> to check all + records, or to a comma-separated list of resource managers to check + only records originating from those resource managers. Currently, + the supported resource managers are <literal>heap</>, + <literal>heap2</>, <literal>btree</>, <literal>gin</>, + <literal>gist</>, <literal>sequence</>, <literal>spgist</>, + <literal>brin</>, and <literal>generic</>. Only + superusers can change this setting. + </para> + </listitem> + </varlistentry> + <varlistentry id="guc-wal-debug" xreflabel="wal_debug"> <term><varname>wal_debug</varname> (<type>boolean</type>) <indexterm> |