From: Venky Shankar Date: Thu, 17 Aug 2023 04:40:37 +0000 (+0530) Subject: PendingReleaseNotes: add a note for `mds_session_metadata_threshold` mds config X-Git-Tag: v19.0.0~616^2 X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=ac3ab1a203ad65c7db07bc2c02acb5620800fb25;p=ceph.git PendingReleaseNotes: add a note for `mds_session_metadata_threshold` mds config Signed-off-by: Venky Shankar --- diff --git a/PendingReleaseNotes b/PendingReleaseNotes index df9c22cc192b1..8917fdadc0a03 100644 --- a/PendingReleaseNotes +++ b/PendingReleaseNotes @@ -8,6 +8,10 @@ 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. +* 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` + config controls the maximum size that a (encoded) session metadata can grow. >=18.0.0