Ceph 0.84 开发版发布了，下载地址：ceph-0.84.tar.bz2：http://ceph.com/download/ceph-0.84.tar.bz2 ceph-0.84.tar.gz：http://ceph.com/download/ceph-0.84.tar.gz
该版本包含：365 commits，值得关注的改进有：
ceph-conf: flush log on exit (Sage Weil)
ceph-dencoder: refactor build a bit to limit dependencies (Sage Weil, Dan Mick)
ceph.spec: split out ceph-common package, other fixes (Sandon Van Ness)
ceph_test_librbd_fsx: fix RNG, make deterministic (Ilya Dryomov)
cephtool: refactor and improve CLI tests (Joao Eduardo Luis)
client: improved MDS session dumps (John Spray)
common: fix dup log messages (#9080, Sage Weil)
crush: include new tunables in dump (Sage Weil)
crush: only require rule features if the rule is used (#8963, Sage Weil)
crushtool: send output to stdout, not stderr (Wido den Hollander)
fix i386 builds (Sage Weil)
fix struct vs class inconsistencies (Thorsten Behrens)
hadoop: update hadoop tests for Hadoop 2.0 (Haumin Chen)
librbd, ceph-fuse: reduce cache flush overhead (Haomai Wang)
librbd: fix error path when opening image (#8912, Josh Durgin)
mds: add file system name, enabled flag (John Spray)
mds: boot refactor, cleanup (John Spray)
mds: fix journal conversion with standby-replay (John Spray)
mds: separate inode recovery queue (John Spray)
mds: session ls, evict commands (John Spray)
mds: submit log events in async thread (Yan, Zheng)
mds: use client-provided timestamp for user-visible file metadata (Yan, Zheng)
mds: validate journal header on load and save (John Spray)
misc build fixes for OS X (John Spray)
misc integer size cleanups (Kevin Cox)
mon: add get-quota commands (Joao Eduardo Luis)
mon: do not create file system by default (John Spray)
mon: fix ‘ceph df’ output for available space (Xiaoxi Chen)
mon: fix bug when no auth keys are present (#8851, Joao Eduardo Luis)
mon: fix compat version for MForward (Joao Eduardo Luis)
mon: restrict some pool properties to tiered pools (Joao Eduardo Luis)
msgr: misc locking fixes for fast dispatch (#8891, Sage Weil)
osd: add ‘dump_reservations’ admin socket command (Sage Weil)
osd: add READFORWARD caching mode (Luis Pabon)
osd: add header cache for KeyValueStore (Haomai Wang)
osd: add prototype KineticStore based on Seagate Kinetic (Josh Durgin)
osd: allow map cache size to be adjusted at runtime (Sage Weil)
osd: avoid refcounting overhead by passing a few things by ref (Somnath Roy)
osd: avoid sharing PG info that is not durable (Samuel Just)
osd: clear slow request latency info on osd up/down (Sage Weil)
osd: fix PG object listing/ordering bug (Guang Yang)
osd: fix PG stat errors with tiering (#9082, Sage Weil)
osd: fix bug with long object names and rename (#8701, Sage Weil)
osd: fix cache full -> not full requeueing (#8931, Sage Weil)
osd: fix gating of messages from old OSD instances (Greg Farnum)
osd: fix memstore bugs with collection_move_rename, lock ordering (Sage Weil)
osd: improve locking for KeyValueStore (Haomai Wang)
osd: make tiering behave if hit_sets aren’t enabled (Sage Weil)
osd: mark pools with incomplete clones (Sage Weil)
osd: misc locking fixes for fast dispatch (Samuel Just, Ma Jianpeng)
osd: prevent old rados clients from using tiered pools (#8714, Sage Weil)
osd: reduce OpTracker overhead (Somnath Roy)
osd: set configurable hard limits on object and xattr names (Sage Weil, Haomai Wang)
osd: trim old EC objects quickly; verify on scrub (Samuel Just)
osd: work around GCC 4.8 bug in journal code (Matt Benjamin)
rados bench: fix arg order (Kevin Dalley)
rados: fix {read,write}_ops values for df output (Sage Weil)
rbd: add rbdmap pre- and post post- hooks, fix misc bugs (Dmitry Smirnov)
rbd: improve option default behavior (Josh Durgin)
rgw: automatically align writes to EC pool (#8442, Yehuda Sadeh)
rgw: fix crash on swift CORS preflight request (#8586, Yehuda Sadeh)
rgw: fix memory leaks (Andrey Kuznetsov)
rgw: fix multipart upload (#8846, Silvain Munaut, Yehuda Sadeh)
rgw: improve -h (Abhishek Lekshmanan)
rgw: improve delimited listing of bucket, misc fixes (Yehuda Sadeh)
rgw: misc civetweb fixes (Yehuda Sadeh)
rgw: powerdns backend for global namespaces (Wido den Hollander)
systemd: initial systemd config files (Federico Simoncelli)
Ceph是加州大学Santa Cruz分校的Sage Weil（DreamHost的联合创始人）专为博士论文设计的新一代自由软件分布式文件系统。自2007年毕业之后，Sage开始全职投入到Ceph开 发之中，使其能适用于生产环境。Ceph的主要目标是设计成基于POSIX的没有单点故障的分布式文件系统，使数据能容错和无缝的复制。
来自:开源中国社区
