Mention tablespaces as a problem for using file system snapshots.

diff --git a/doc/src/sgml/backup.sgml b/doc/src/sgml/backup.sgml
index 00efde7ee29a1ef20f66080cac3d20d5e43cb7fd..01d023aae0df5cc4c346c754aca9f06f47eadc61 100644 (file)
--- a/doc/src/sgml/backup.sgml
+++ b/doc/src/sgml/backup.sgml
@@ -1,5 +1,5 @@
 
 
  Backup and Restore
@@ -365,7 +365,7 @@ tar -cf backup.tar /usr/local/pgsql/data
 
   
    If your database is spread across multiple volumes (for example,
-   data files and WAL log on different disks) there may not be any way
+   if you are using tablespaces) there may not be any way
    to obtain exactly-simultaneous frozen snapshots of all the volumes.
    Read your file system documentation very carefully before trusting
    to the consistent-snapshot technique in such situations.  The safest