doc: deprecate blkin tracing

Signed-off-by: Casey Bodley <[email protected]>
zmc · Feb 8, 2024 · de57824 · de57824
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diff --git a/PendingReleaseNotes b/PendingReleaseNotes
@@ -10,6 +10,9 @@
   For multi-site deployments that make any use of Server-Side Encryption, we
   recommended running this command against every bucket in every zone after all
   zones have upgraded.
+* Tracing: The blkin tracing feature (see https://docs.ceph.com/en/reef/dev/blkin/)
+  is now deprecated in favor of Opentracing (https://docs.ceph.com/en/reef/dev/developer_guide/jaegertracing/)
+  and will be removed in a later release.
 * CEPHFS: MDS evicts clients which are not advancing their request tids which causes
   a large buildup of session metadata resulting in the MDS going read-only due to
   the RADOS operation exceeding the size threshold. `mds_session_metadata_threshold`

diff --git a/doc/dev/blkin.rst b/doc/dev/blkin.rst
@@ -72,6 +72,9 @@ Destroy tracing session::
  Tracing Ceph With Blkin
 =========================
 
+.. deprecated:: This feature was deprecated in the Squid release and will
+   be removed in a later release.
+
 Ceph can use Blkin, a library created by Marios Kogias and others,
 which enables tracking a specific request from the time it enters
 the system at higher levels till it is finally served by RADOS.