From 535b8db33ea03fbab7ef0c4df5251658f956b0c5 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Rados=C5=82aw=20Zarzy=C5=84ski?= Date: Tue, 2 May 2023 17:52:23 +0200 Subject: [PATCH] doc: deprecate the cache tiering MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit This topic has been discussed many times; recently at the Dev Summit of Cephalocon 2023. This commit is the minial version of the work, contained entirely within the `doc`. However, likely it will be expanded as there were ideas like e.g. adding cache tiering back experimental feature list (Sam) to warn users when deploying a new cluster. Signed-off-by: Radosław Zarzyński --- PendingReleaseNotes | 1 + doc/rados/operations/cache-tiering.rst | 4 ++++ 2 files changed, 5 insertions(+) diff --git a/PendingReleaseNotes b/PendingReleaseNotes index 91015cf7dd3f0..a5a20b9dbe62f 100644 --- a/PendingReleaseNotes +++ b/PendingReleaseNotes @@ -138,6 +138,7 @@ `ceph config set mgr mgr/telemetry/leaderboard_description ‘Cluster description’`. * CEPHFS: After recovering a Ceph File System post following the disaster recovery procedure, the recovered files under `lost+found` directory can now be deleted. +* core: cache-tiering is now deprecated. >=17.2.1 diff --git a/doc/rados/operations/cache-tiering.rst b/doc/rados/operations/cache-tiering.rst index 8056ace4743bd..cd29b87d0cfa6 100644 --- a/doc/rados/operations/cache-tiering.rst +++ b/doc/rados/operations/cache-tiering.rst @@ -1,6 +1,10 @@ =============== 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. 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 -- 2.39.5