Add a section about WAL-MISSING-AFTER warnings

diff --git a/input/howto/postgres-backup.creole b/input/howto/postgres-backup.creole
index 3afeaa6..4f497ca 100644 (file)
--- a/input/howto/postgres-backup.creole
+++ b/input/howto/postgres-backup.creole
@@ -148,3 +148,12 @@ STOP TIME: 2018-02-05 10:59:50 UTC
 To fix this, verify we have a later base tarball, or that we are fine for some other reason,
 and remove the corresponding .backup file.  In the case above, we would remove
 {{{dak.WAL.000000010000003D000000AC.00000028.backup}}}.
 To fix this, verify we have a later base tarball, or that we are fine for some other reason,
 and remove the corresponding .backup file.  In the case above, we would remove
 {{{dak.WAL.000000010000003D000000AC.00000028.backup}}}.

+
+== WAL-MISSING-AFTER ==
+
+e.g.:
+{{{
+[bmdb1, main] WAL-MISSING-AFTER: bmdb1/main.WAL.0000000100001340000000DB
+}}
+
+If it's just one WAL file missing, it can be recovered from the other backup host.  If more logs are missing, check the server's logs for archive errors.