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-rw-r--r--doc/src/sgml/pgupgrade.sgml3
1 files changed, 2 insertions, 1 deletions
diff --git a/doc/src/sgml/pgupgrade.sgml b/doc/src/sgml/pgupgrade.sgml
index 62856f1df81..f2d2d75af39 100644
--- a/doc/src/sgml/pgupgrade.sgml
+++ b/doc/src/sgml/pgupgrade.sgml
@@ -336,7 +336,8 @@ NET STOP pgsql-8.3 (<productname>PostgreSQL</> 8.3 and older used a different s
copying), but you will not be able to access your old cluster
once you start the new cluster after the upgrade. Link mode also
requires that the old and new cluster data directories be in the
- same file system. See <literal>pg_upgrade --help</> for a full
+ same file system. (Tablespaces and <filename>pg_xlog</> can be on
+ different file systems.) See <literal>pg_upgrade --help</> for a full
list of options.
</para>