Ceph0.84开发版发布，分布式文件系统

Git@OSC 安卓客户端 1.0 正式版发布，有亮点哦！

Ceph 0.84 开发版发布了，下载地址： ceph-0.84.tar.bz2 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。