PendingReleaseNotes: add an note about dmclock based scheduler for MDS

Signed-off-by: Venky Shankar <vshankar@redhat.com>

diff --git a/PendingReleaseNotes b/PendingReleaseNotes
index 8afbcfe66de7a95a65d46bb8e259e97b78ebe48f..a9710c69e9f0f2944f6b20fba20635833896374f 100644 (file)
--- a/PendingReleaseNotes
+++ b/PendingReleaseNotes
@@ -12,6 +12,11 @@
   update and remove existing key-value pairs that are part of a snapshot
   metadata via libcephfs API ceph_do_snap_md_op().
 
+* CephFS: MDS dmclock support for subvolume QoS. With this feature, MDS assigns QoS
+  to throttle client metadata requests (e.g., create, mkdir, lookup, and so on) to
+  subvolumes, where each subvolume QoS is shared among multiple client sessions at
+  that time.
+
 * librados/neorados: The C++ APIs for executing Ceph Class (CLS) methods
   have undergone a breaking change to enforce compile-time type safety, replacing
   legacy string-based parameters with strongly-typed ClsMethod structs. C++