We're bringing in the new year with a new release, v0.56, which will form
the basis of the next stable series "bobtail." There is little in the way
of new functionality since v0.55, as we've been focusing primarily on
stability, performance, and upgradability from the previous argonaut
stable series (v0.48.x). If you are a current argonaut user, you can
either upgrade now, or watch the Inktank blog for the bobtail announcement
after some additional testing has been completed. If you are a v0.55 or
v0.55.1 user, we recommend upgrading now.
Notable changes since v0.55 include:
* librbd: fixes for read-only pools for image cloning
* osd: fix for mixing argonaut and post-v0.54 OSDs
* osd: some recovery tuning
* osd: fix for several scrub, recovery, and watch/notify races/bugs
* osd: fix pool_stat_t backwawrd compatibility with pre-v0.41 clients
* osd: experimental split support
* mkcephfs: misc fixes for fs initialization, mounting
* radosgw: usage and op logs off by default
* radosgw: keystone authentication off by default
* upstart: only enabled with 'upstart' file exists in daemon data
directory
* mount.fuse.ceph: allow mounting of ceph-fuse via /etc/fstab
* config: always complain about config parsing errors
* mon: fixed memory leaks, misc bugs
* mds: many misc fixes
Notable changes since v0.48.2 ("argonaut"):
* auth: authentication is now on by default; see release notes!
* osd: improved threading, small io performance
* osd: deep scrubbing (verify object data)
* osd: chunky scrubs (more efficient)
* osd: improved performance during recovery
* librbd: cloning support
* librbd: fine-grained striping support
* librbd: better caching
* radosgw: improved Swift and S3 API coverage (POST, multi-object delete,
striping)
* radosgw: OpenStack Keystone integration
* radosgw: efficient usage stats aggregation (for billing)
* crush: improvements in distribution (still off by default; see CRUSH
tunables)
* ceph-fuse, mds: general stability improvements
* release RPMs for OpenSUSE, SLES, Fedora, RHEL, CentOS
* tons and bug fixes and small improvements across the board
If you are upgrading from v0.55, there are no special upgrade
instructions. If you are upgrading from an older version, please read the
release notes. Authentication is now enabled by default, and if you do not
adjust your ceph.conf accordingly before upgrading the system will not
come up by itself.
You can get this release from the usual locations:
* Git at git://github.com/ceph/ceph.git
* Tarball at http://ceph.com/download/ceph-0.56.tar.gz
* For Debian/Ubuntu packages, see http://ceph.com/docs/master/install/debian
* For RPMs, see http://ceph.com/docs/master/install/rpm
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