The Jewel LTS release brought a number of significant changes:
- Unified queue of client I/O, recovery, scrubs, and snapshot trimming
- Daemons now run as the ceph user, which must be addressed when upgrading
- Cache tier improvements
- SHEC erasure coding is no longer experimental
- The SWIFT API now supports object expiration
- RBD improvements (now supports suffixes)
- rbd du shows actual and provisioned usage quickly via object-map and fast-diff features
- New rbd status command
- deep-flatten now handles snapshots
- CephFS snapshots can now be renamed
- And CephFS is considered stable!
- Scrubbing improvements
- TCMalloc improvements
- Multisite functionality in RGW significantly improved
- OpenStack Keystone v3 support
- Swift per-tenant namespace
- Async RBD mirroring
- A new look for ceph status
More details on the Jewel release can be found at http://ceph.com/releases/v10-2-0-jewel-released.
As we write, the major Luminous LTS release has just reached general availability. Early experiences are positive and it is the best choice for new deployments. Much-anticipated features in Luminous include:
- The BlueStore back end is supported
- In-line compression and read checksums
- Erasure coding for RBD volumes
- Better tools for uniform OSD utilization
- Improved tools for the OSD lifecycle
- Enhanced CLI
- Multiple active CephFS MDS servers are supported
The release notes for Luminous 12.2.0 can be found at https://ceph.com/releases/v12-2-0-luminous-released/.
