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-rw-r--r--doc/src/sgml/release-18.sgml21
1 files changed, 21 insertions, 0 deletions
diff --git a/doc/src/sgml/release-18.sgml b/doc/src/sgml/release-18.sgml
index d7340465e79..19e770c65b5 100644
--- a/doc/src/sgml/release-18.sgml
+++ b/doc/src/sgml/release-18.sgml
@@ -194,6 +194,27 @@ These were previously zero-based.
</para>
</listitem>
+<!--
+Author: Peter Eisentraut <peter@eisentraut.org>
+2024-10-16 [04bec894a04] initdb: Change default to using data checksums.
+-->
+
+<listitem>
+<para>
+initdb defaults to enabling data checksums
+<ulink url="&commit_baseurl;04bec894a04">&sect;</ulink>
+</para>
+
+<para>
+The previous default behavior (checksums disabled) can be obtained using the
+new option --no-data-checksums. Note that pg_upgrade will reject upgrading
+between clusters with different checksum settings, so if the old cluster does
+not have checksums enabled (the previous default), then the new cluster will
+need to be initialized with --no-data-checksums in order to allow pg_upgrade
+to succeed.
+</para>
+</listitem>
+
</itemizedlist>
</sect2>