From: Casey Bodley Date: Wed, 13 Mar 2024 22:47:35 +0000 (-0400) Subject: PendingReleaseNotes: announce the notification_v2 feature and its migration X-Git-Tag: v20.0.0~2392^2 X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=refs%2Fpull%2F56179%2Fhead;p=ceph.git PendingReleaseNotes: announce the notification_v2 feature and its migration Signed-off-by: Casey Bodley --- diff --git a/PendingReleaseNotes b/PendingReleaseNotes index 801546c0b577..6b5c33500bc6 100644 --- a/PendingReleaseNotes +++ b/PendingReleaseNotes @@ -13,6 +13,16 @@ * 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. +* RGW: Introducing a new data layout for the Topic metadata associated with S3 + Bucket Notifications, where each Topic is stored as a separate RADOS object + and the bucket notification configuration is stored in a bucket attribute. + This new representation supports multisite replication via metadata sync and + can scale to many topics. This is on by default for new deployments, but is + is not enabled by default on upgrade. Once all radosgws have upgraded (on all + zones in a multisite configuration), the ``notification_v2`` zone feature can + be enabled to migrate to the new format. See + https://docs.ceph.com/en/squid/radosgw/zone-features for details. The "v1" + format is now considered deprecated and may be removed after 2 major releases. * 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`