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-rw-r--r--doc/src/sgml/ref/pg_rewind.sgml9
1 files changed, 9 insertions, 0 deletions
diff --git a/doc/src/sgml/ref/pg_rewind.sgml b/doc/src/sgml/ref/pg_rewind.sgml
index ed1625b5237..d303bfd7623 100644
--- a/doc/src/sgml/ref/pg_rewind.sgml
+++ b/doc/src/sgml/ref/pg_rewind.sgml
@@ -217,6 +217,15 @@ PostgreSQL documentation
<refsect1>
<title>Notes</title>
+ <para>
+ When executing <application>pg_rewind</application> using an online
+ cluster as source which has been recently promoted, it is necessary
+ to execute a <command>CHECKPOINT</command> after promotion so as its
+ control file reflects up-to-date timeline information, which is used by
+ <application>pg_rewind</application> to check if the target cluster
+ can be rewound using the designated source cluster.
+ </para>
+
<refsect2>
<title>How it works</title>