doc/release-notes: do not downgrade from v0.67.6

Signed-off-by: Sage Weil <sage@inktank.com>

diff --git a/doc/release-notes.rst b/doc/release-notes.rst
index bc44ca4a3487761e011b7d21e6881052cd133221..0074b8d8a26317c2f688d000cbe6a4c1e830e5b5 100644 (file)
--- a/doc/release-notes.rst
+++ b/doc/release-notes.rst
@@ -964,6 +964,11 @@ Upgrading
   regression in this case, but that is current considered too complex
   for backport to the Dumpling stable series.
 
+* It is very dangerous to downgrade from v0.67.6 to a prior version of
+  Dumpling.  If the old version does not have 'filestore xattr use
+  omap = true' it may not be able to read all xattrs for an object and
+  can cause undefined behavior.
+
 Notable changes
 ~~~~~~~~~~~~~~~