doc/rados/operations: edit cache-tiering.rst

Strengthen the warning against deploying cache tiering in releases after
Reef. This follows up on Anthony D'Atri's request in
https://github.com/ceph/ceph/pull/63465.

Signed-off-by: Zac Dover <zac.dover@proton.me>
(cherry picked from commit f4de34f4bdbc7b3930afd8c034064675640df202)

diff --git a/doc/rados/operations/cache-tiering.rst b/doc/rados/operations/cache-tiering.rst
index b7cb099a4ad1e03aa11906dc047d325f7b73f450..667d34be6f8322e4e62e16914ff39ba1151be7bc 100644 (file)
--- a/doc/rados/operations/cache-tiering.rst
+++ b/doc/rados/operations/cache-tiering.rst
@@ -2,10 +2,13 @@
  Cache Tiering
 ===============
 
-.. warning:: Cache tiering has been deprecated in the Reef release as it
-             has lacked a maintainer for a very long time. This does not mean
-             it will be certainly removed, but we may choose to remove it
-             without much further notice.
+.. warning:: Cache tiering has been deprecated in the Reef release. Cache
+   tiering has lacked a maintainer for a long time. This does not mean that
+   it will certainly be removed, but it might be removed without much
+   notice.
+
+   The upstream Ceph community strongly advises against deploying new cache
+   tiers to releases after the Reef release.
 
 A cache tier provides Ceph Clients with better I/O performance for a subset of
 the data stored in a backing storage tier. Cache tiering involves creating a