----- Message from Sage Weil <sage at inktank.com> ---------
Date: Tue, 6 May 2014 18:05:19 -0700 (PDT)
From: Sage Weil <sage at inktank.com>
Subject: v0.80 Firefly released
To: ceph-devel at vger.kernel.org, ceph-users at ceph.com
> We did it! Firefly v0.80 is built and pushed out to the ceph.com
> repositories.
>
> This release will form the basis for our long-term supported release
> Firefly, v0.80.x. The big new features are support for erasure coding
> and cache tiering, although a broad range of other features, fixes,
> and improvements have been made across the code base. Highlights include:
>
> * *Erasure coding*: support for a broad range of erasure codes for lower
> storage overhead and better data durability.
> * *Cache tiering*: support for creating 'cache pools' that store hot,
> recently accessed objects with automatic demotion of colder data to
> a base tier. Typically the cache pool is backed by faster storage
> devices like SSDs.
> * *Primary affinity*: Ceph now has the ability to skew selection of
> OSDs as the "primary" copy, which allows the read workload to be
> cheaply skewed away from parts of the cluster without migrating any
> data.
> * *Key/value OSD backend* (experimental): An alternative storage backend
> for Ceph OSD processes that puts all data in a key/value database like
> leveldb. This provides better performance for workloads dominated by
> key/value operations (like radosgw bucket indices).
Nice!
Is there already some documentation about this Key/value OSD back-end
topic, like how to use, restrictions, ..?
A question (referring to
http://www.sebastien-han.fr/blog/2013/12/02/ceph-performance-interesting-things-going-on/): Do we need a journal when using this
back-end?
And is this compatible for use with CephFS?
Thanks!
> * *Standalone radosgw* (experimental): The radosgw process can now run
> in a standalone mode without an apache (or similar) web server or
> fastcgi. This simplifies deployment and can improve performance.
>
> We expect to maintain a series of stable releases based on v0.80
> Firefly for as much as a year. In the meantime, development of Ceph
> continues with the next release, Giant, which will feature work on the
> CephFS distributed file system, more alternative storage backends
> (like RocksDB and f2fs), RDMA support, support for pyramid erasure
> codes, and additional functionality in the block device (RBD) like
> copy-on-read and multisite mirroring.
>
> This release is the culmination of a huge collective effort by about 100
> different contributors. Thank you everyone who has helped to make this
> possible!
>
> Upgrade Sequencing
> ------------------
>
> * If your existing cluster is running a version older than v0.67
> Dumpling, please first upgrade to the latest Dumpling release before
> upgrading to v0.80 Firefly. Please refer to the :ref:`Dumpling upgrade`
> documentation.
>
> * Upgrade daemons in the following order:
>
> 1. Monitors
> 2. OSDs
> 3. MDSs and/or radosgw
>
> If the ceph-mds daemon is restarted first, it will wait until all
> OSDs have been upgraded before finishing its startup sequence. If
> the ceph-mon daemons are not restarted prior to the ceph-osd
> daemons, they will not correctly register their new capabilities
> with the cluster and new features may not be usable until they are
> restarted a second time.
>
> * Upgrade radosgw daemons together. There is a subtle change in behavior
> for multipart uploads that prevents a multipart request that was initiated
> with a new radosgw from being completed by an old radosgw.
>
> Notable changes since v0.79
> ---------------------------
>
> * ceph-fuse, libcephfs: fix several caching bugs (Yan, Zheng)
> * ceph-fuse: trim inodes in response to mds memory pressure (Yan, Zheng)
> * librados: fix inconsistencies in API error values (David Zafman)
> * librados: fix watch operations with cache pools (Sage Weil)
> * librados: new snap rollback operation (David Zafman)
> * mds: fix respawn (John Spray)
> * mds: misc bugs (Yan, Zheng)
> * mds: misc multi-mds fixes (Yan, Zheng)
> * mds: use shared_ptr for requests (Greg Farnum)
> * mon: fix peer feature checks (Sage Weil)
> * mon: require 'x' mon caps for auth operations (Joao Luis)
> * mon: shutdown when removed from mon cluster (Joao Luis)
> * msgr: fix locking bug in authentication (Josh Durgin)
> * osd: fix bug in journal replay/restart (Sage Weil)
> * osd: many many many bug fixes with cache tiering (Samuel Just)
> * osd: track omap and hit_set objects in pg stats (Samuel Just)
> * osd: warn if agent cannot enable due to invalid (post-split) stats
> (Sage Weil)
> * rados bench: track metadata for multiple runs separately (Guang Yang)
> * rgw: fixed subuser modify (Yehuda Sadeh)
> * rpm: fix redhat-lsb dependency (Sage Weil, Alfredo Deza)
>
> For the complete release notes, please see:
>
> http://ceph.com/docs/master/release-notes/#v0-80-firefly
>
>
> Getting Ceph
> ------------
>
> * Git at git://github.com/ceph/ceph.git
> * Tarball at http://ceph.com/download/ceph-0.80.tar.gz
> * For packages, see http://ceph.com/docs/master/install/get-packages
> * For ceph-deploy, see
> http://ceph.com/docs/master/install/install-ceph-deploy
>
> _______________________________________________
> ceph-users mailing list
> ceph-users at lists.ceph.com
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
----- End message from Sage Weil <sage at inktank.com> -----
--
Met vriendelijke groeten,
Kenneth Waegeman
