After a long few weeks of debugging, we're releasing v0.20. The goal here
is to get something out prior to the v2.6.34 kernel release (which will
include the Ceph client) with most of the pending improvements. Changes
since v0.19 include:
* osd: new filestore, journaling infrastructure. (lower latency
writes, btrfs no longer strictly required)
* msgr: wire protocol improvements
* mds: reduced memory utilization (still more to do!)
* auth: many auth_x cleanups and improvements
* librados: some cleanup; C++ API now usable
* many bug fixes throughout
There are a handful of bugs that we've seen but haven't been able to
reproduce reliably. As those are fixed there will be a v0.20.1 point
release. In the meantime, work continues on v0.21. Upcoming changes
include:
* performance improvements
* rbd: rados block device (kvm and native linux drivers)
* flock/fnctl lock support
* lazy io
* allow client reconnect even after mds has restarted (useful for
clients temporarily disconnected during mds restarts)
* cluster mds fixes
To get it:
* Direct download at http://ceph.newdream.net/download/ceph-v0.20.tar.gz
* For Debian packages see http://ceph.newdream.net/wiki/Debian
RPMs will be included in the soon to be released Fedora 13. There is also
a ceph.spec file in git to build your own.
sage
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