From: nmordech@redhat.com Date: Wed, 21 Feb 2024 09:21:25 +0000 (+0000) Subject: PendingReleaseNotes: Adding note about rest module change and adding max_request... X-Git-Tag: v17.2.8~69^2~1 X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=bc589a87555092d0dc5079523a5c32ce6127c500;p=ceph.git PendingReleaseNotes: Adding note about rest module change and adding max_request option Signed-off-by: Nitzan Mordechai (cherry picked from commit 7b251cad2c2b0f0d6d8e30bec20653fac137e56e) --- diff --git a/PendingReleaseNotes b/PendingReleaseNotes index f6bdf4dcc9d..51ae11f8a81 100644 --- a/PendingReleaseNotes +++ b/PendingReleaseNotes @@ -160,6 +160,111 @@ See https://docs.ceph.com/en/latest/rados/operations/balancer/ for more information. * CephFS: Full support for subvolumes and subvolume groups is now available for snap_schedule Manager module. +* RGW: The SNS CreateTopic API now enforces the same topic naming requirements as AWS: + Topic names must be made up of only uppercase and lowercase ASCII letters, numbers, + underscores, and hyphens, and must be between 1 and 256 characters long. +* RBD: When diffing against the beginning of time (`fromsnapname == NULL`) in + fast-diff mode (`whole_object == true` with `fast-diff` image feature enabled + and valid), diff-iterate is now guaranteed to execute locally if exclusive + lock is available. This brings a dramatic performance improvement for QEMU + live disk synchronization and backup use cases. +* RBD: The ``try-netlink`` mapping option for rbd-nbd has become the default + and is now deprecated. If the NBD netlink interface is not supported by the + kernel, then the mapping is retried using the legacy ioctl interface. +* RADOS: Read balancing may now be managed automatically via the balancer + manager module. Users may choose between two new modes: ``upmap-read``, which + offers upmap and read optimization simultaneously, or ``read``, which may be used + to only optimize reads. For more detailed information see https://docs.ceph.com/en/latest/rados/operations/read-balancer/#online-optimization. +* CephFS: MDS log trimming is now driven by a separate thread which tries to + trim the log every second (`mds_log_trim_upkeep_interval` config). Also, + a couple of configs govern how much time the MDS spends in trimming its + logs. These configs are `mds_log_trim_threshold` and `mds_log_trim_decay_rate`. +* RGW: Notification topics are now owned by the user that created them. + By default, only the owner can read/write their topics. Topic policy documents + are now supported to grant these permissions to other users. Preexisting topics + are treated as if they have no owner, and any user can read/write them using the SNS API. + If such a topic is recreated with CreateTopic, the issuing user becomes the new owner. + For backward compatibility, all users still have permission to publish bucket + notifications to topics owned by other users. A new configuration parameter: + ``rgw_topic_require_publish_policy`` can be enabled to deny ``sns:Publish`` + permissions unless explicitly granted by topic policy. +* RGW: Fix issue with persistent notifications where the changes to topic param that + were modified while persistent notifications were in the queue will be reflected in notifications. + So if user sets up topic with incorrect config (password/ssl) causing failure while delivering the + notifications to broker, can now modify the incorrect topic attribute and on retry attempt to delivery + the notifications, new configs will be used. +* RBD: The option ``--image-id`` has been added to `rbd children` CLI command, + so it can be run for images in the trash. +* PG dump: The default output of `ceph pg dump --format json` has changed. The + default json format produces a rather massive output in large clusters and + isn't scalable. So we have removed the 'network_ping_times' section from + the output. Details in the tracker: https://tracker.ceph.com/issues/57460 +* mgr/REST: The REST manager module will trim requests based on the 'max_requests' option. + Without this feature, and in the absence of manual deletion of old requests, + the accumulation of requests in the array can lead to Out Of Memory (OOM) issues, + resulting in the Manager crashing. + +* CephFS: The `subvolume snapshot clone` command now depends on the config option + `snapshot_clone_no_wait` which is used to reject the clone operation when + all the cloner threads are busy. This config option is enabled by default which means + that if no cloner threads are free, the clone request errors out with EAGAIN. + The value of the config option can be fetched by using: + `ceph config get mgr mgr/volumes/snapshot_clone_no_wait` + and it can be disabled by using: + `ceph config set mgr mgr/volumes/snapshot_clone_no_wait false` +* RBD: `RBD_IMAGE_OPTION_CLONE_FORMAT` option has been exposed in Python + bindings via `clone_format` optional parameter to `clone`, `deep_copy` and + `migration_prepare` methods. +* RBD: `RBD_IMAGE_OPTION_FLATTEN` option has been exposed in Python bindings via + `flatten` optional parameter to `deep_copy` and `migration_prepare` methods. + +* CephFS: Command "ceph mds fail" and "ceph fs fail" now requires a + confirmation flag when some MDSs exhibit health warning MDS_TRIM or + MDS_CACHE_OVERSIZED. This is to prevent accidental MDS failover causing + further delays in recovery. +* CephFS: fixes to the implementation of the ``root_squash`` mechanism enabled + via cephx ``mds`` caps on a client credential require a new client feature + bit, ``client_mds_auth_caps``. Clients using credentials with ``root_squash`` + without this feature will trigger the MDS to raise a HEALTH_ERR on the + cluster, MDS_CLIENTS_BROKEN_ROOTSQUASH. See the documentation on this warning + and the new feature bit for more information. +* CephFS: Expanded removexattr support for cephfs virtual extended attributes. + Previously one had to use setxattr to restore the default in order to "remove". + You may now properly use removexattr to remove. You can also now remove layout + on root inode, which then will restore layout to default layout. + +* cls_cxx_gather is marked as deprecated. +* CephFS: cephfs-journal-tool is guarded against running on an online file system. + The 'cephfs-journal-tool --rank : journal reset' and + 'cephfs-journal-tool --rank : journal reset --force' + commands require '--yes-i-really-really-mean-it'. + +* Dashboard: Rearranged Navigation Layout: The navigation layout has been reorganized + for improved usability and easier access to key features. +* Dashboard: CephFS Improvments + * Support for managing CephFS snapshots and clones, as well as snapshot schedule + management + * Manage authorization capabilities for CephFS resources + * Helpers on mounting a CephFS volume +* Dashboard: RGW Improvements + * Support for managing bucket policies + * Add/Remove bucket tags + * ACL Management + * Several UI/UX Improvements to the bucket form +* Monitoring: Grafana dashboards are now loaded into the container at runtime rather than + building a grafana image with the grafana dashboards. Official Ceph grafana images + can be found in quay.io/ceph/grafana +* Monitoring: RGW S3 Analytics: A new Grafana dashboard is now available, enabling you to + visualize per bucket and user analytics data, including total GETs, PUTs, Deletes, + Copies, and list metrics. +* RBD: `Image::access_timestamp` and `Image::modify_timestamp` Python APIs now + return timestamps in UTC. +* RBD: Support for cloning from non-user type snapshots is added. This is + intended primarily as a building block for cloning new groups from group + snapshots created with `rbd group snap create` command, but has also been + exposed via the new `--snap-id` option for `rbd clone` command. +* RBD: The output of `rbd snap ls --all` command now includes the original + type for trashed snapshots. >=18.0.0