We're happy to announce the 7th backport release in the Pacific series. We recommend all users upgrade to this release. Notable Changes --------------- * Critical bug in OMAP format upgrade is fixed. This could cause data corruption (improperly formatted OMAP keys) after pre-Pacific cluster upgrade if bluestore-quick-fix-on-mount parameter is set to true or ceph-bluestore-tool's quick-fix/repair commands are invoked. Relevant tracker: https://tracker.ceph.com/issues/53062. bluestore-quick-fix-on-mount continues to be set to false, by default. * MGR: The pg_autoscaler will use the 'scale-up' profile as the default profile. 16.2.6 changed the default profile to 'scale-down' but we ran into issues with the device_health_metrics pool consuming too many PGs, which is not ideal for performance. So we will continue to use the 'scale-up' profile by default, until we implement a limit on the number of PGs default pools should consume, in combination with the 'scale-down' profile. * Cephadm & Ceph Dashboard: NFS management has been completely reworked to ensure that NFS exports are managed consistently across the different Ceph components. Prior to this, there were 3 incompatible implementations for configuring the NFS exports: Ceph-Ansible/OpenStack Manila, Ceph Dashboard and 'mgr/nfs' module. With this release the 'mgr/nfs' way becomes the official interface, and the remaining components (Cephadm and Ceph Dashboard) adhere to it. While this might require manually migrating from the deprecated implementations, it will simplify the user experience for those heavily relying on NFS exports. * Dashboard: "Cluster Expansion Wizard". After the 'cephadm bootstrap' step, users that log into the Ceph Dashboard will be presented with a welcome screen. If they choose to follow the installation wizard, they will be guided through a set of steps to help them configure their Ceph cluster: expanding the cluster by adding more hosts, detecting and defining their storage devices, and finally deploying and configuring the different Ceph services. * OSD: When using mclock_scheduler for QoS, there is no longer a need to run any manual benchmark. The OSD now automatically sets an appropriate value for osd_mclock_max_capacity_iops by running a simple benchmark during initialization. * MGR: The global recovery event in the progress module has been optimized and a sleep_interval of 5 seconds has been added between stats collection, to reduce the impact of the progress module on the MGR, especially in large clusters. Getting Ceph ------------ * Git at git://github.com/ceph/ceph.git * Tarball at https://download.ceph.com/tarballs/ceph-16.2.7.tar.gz * Containers at https://quay.io/repository/ceph/ceph * For packages, see https://docs.ceph.com/docs/master/install/get-packages/ * Release git sha1: dd0603118f56ab514f133c8d2e3adfc983942503 _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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