From d14fbd4e9ed716f3d73296adb7086d61e224cacf 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 (cherry picked from commit 535b8db33ea03fbab7ef0c4df5251658f956b0c5) --- PendingReleaseNotes | 15 +++++++++++++++ doc/rados/operations/cache-tiering.rst | 4 ++++ 2 files changed, 19 insertions(+) diff --git a/PendingReleaseNotes b/PendingReleaseNotes index ec95fdce58d..00ba599c423 100644 --- a/PendingReleaseNotes +++ b/PendingReleaseNotes @@ -124,6 +124,21 @@ * RBD: list-watchers C++ API (`Image::list_watchers`) now clears the passed `std::list` before potentially appending to it, aligning with the semantics of the corresponding C API (`rbd_watchers_list`). +* Telemetry: Users who are opted-in to telemetry can also opt-in to + participating in a leaderboard in the telemetry public + dashboards (https://telemetry-public.ceph.com/). Users can now also add a + description of the cluster to publicly appear in the leaderboard. + For more details, see: + https://docs.ceph.com/en/latest/mgr/telemetry/#leaderboard + See a sample report with `ceph telemetry preview`. + Opt-in to telemetry with `ceph telemetry on`. + Opt-in to the leaderboard with + `ceph config set mgr mgr/telemetry/leaderboard true`. + Add leaderboard description with: + `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 8056ace4743..cd29b87d0cf 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