update ceph source to reef 18.2.1

[ceph.git] / ceph / src / common / options / mds.yaml.in

diff --git a/ceph/src/common/options/mds.yaml.in b/ceph/src/common/options/mds.yaml.in
index eeb895615d6a60e1e3c6e924f274f058b25a24f7..6eb0702fcdda183ec516ee65d6a2d7c0c9632831 100644 (file)
--- a/ceph/src/common/options/mds.yaml.in
+++ b/ceph/src/common/options/mds.yaml.in
@@ -345,10 +345,10 @@ options:
   type: float
   level: advanced
   desc: decay rate for session readdir caps leading to readdir throttle
-  long_desc: The half-life for the session cap acquisition counter of caps acquired
-    by readdir. This is used for throttling readdir requests from clients slow to
-    release caps.
-  default: 10
+  long_desc: The half-life for the session cap acquisition counter of caps
+    acquired by readdir. This is used for throttling readdir requests from
+    clients.
+  default: 30
   services:
   - mds
   flags:
@@ -356,8 +356,8 @@ options:
 - name: mds_session_cap_acquisition_throttle
   type: uint
   level: advanced
-  desc: throttle point for cap acquisition decay counter
-  default: 500000
+  desc: threshold at which the cap acquisition decay counter throttles
+  default: 100000
   services:
   - mds
 - name: mds_session_max_caps_throttle_ratio
@@ -1524,3 +1524,13 @@ options:
   - mds
   flags:
   - runtime
+- name: mds_session_metadata_threshold
+  type: size
+  level: advanced
+  desc: Evict non-advancing client-tid sessions exceeding the config size.
+  long_desc: Evict clients which are not advancing their request tids which causes a large buildup of session metadata (`completed_requests`) in the MDS causing the MDS to go read-only since the RADOS operation exceeds the size threashold. This config is the maximum size (in bytes) that a session metadata (encoded) can grow.
+  default: 16_M
+  services:
+  - mds
+  flags:
+  - runtime