summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--doc/src/sgml/backup.sgml3
1 files changed, 2 insertions, 1 deletions
diff --git a/doc/src/sgml/backup.sgml b/doc/src/sgml/backup.sgml
index 76b55433426..b7ec53a5986 100644
--- a/doc/src/sgml/backup.sgml
+++ b/doc/src/sgml/backup.sgml
@@ -903,7 +903,8 @@ SELECT * FROM pg_stop_backup(false);
<filename>backup_label</> in the root directory of the backup. The
third field should be written to a file named
<filename>tablespace_map</> unless the field is empty. These files are
- vital to the backup working, and must be written without modification.
+ vital to the backup working and must be written byte for byte without
+ modification, which may require opening the file in binary mode.
</para>
</listitem>
<listitem>