doc/rados/operations/pg-states: document the "unknown" state

Signed-off-by: Nathan Cutler <ncutler@suse.com>

diff --git a/doc/rados/operations/pg-states.rst b/doc/rados/operations/pg-states.rst
index f945afa75d142d8ccb3ac45f34a8f5c57adc07c0..651d924d2d577d414603f98f75a34ffe574a3f18 100644 (file)
--- a/doc/rados/operations/pg-states.rst
+++ b/doc/rados/operations/pg-states.rst
@@ -106,3 +106,7 @@ map is ``active + clean``.
 
 *snaptrim_error*
   Error stopped trimming snaps.
+
+*unknown*
+  The ceph-mgr hasn't yet received any information about the PG's state from an
+  OSD since mgr started up.