Ceph v0.87.1 发行说明，分布式文件系统

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Ceph v0.87.1 发布，此版本是 Giant 第一个关键版本，也许是最终版本，主要关注 Hammer 和 Firefly 稳定性修复。

建议所有用户升级到最新版本！

UPGRADING

• 因为 Linux Kernel 3.18 版本的改进和 FUSE 接口的限制，ceph-fuse 需要作为一些系统的根系统安装。See issues #9997, #10277, and #10542 for details.

值得关注的改进

• build: disable stack-execute bit on assembler objects (#10114 Dan Mick)

• build: support boost 1.57.0 (#10688 Ken Dreyer)

• ceph-disk: fix dmcrypt file permissions (#9785 Loic Dachary)

• ceph-disk: run partprobe after zap, behave with partx or partprobe (#9665 #9721 Loic Dachary)

• cephfs-journal-tool: fix import for aged journals (#9977 John Spray)

• cephfs-journal-tool: fix journal import (#10025 John Spray)

• ceph-fuse: use remount to trim kernel dcache (#10277 Yan, Zheng)

• common: add cctid meta variable (#6228 Adam Crume)

• common: fix dump of shard for ghobject_t (#10063 Loic Dachary)

• crush: fix bucket weight underflow (#9998 Pawel Sadowski)

• erasure-code: enforce chunk size alignment (#10211 Loic Dachary)

• erasure-code: regression test suite (#9420 Loic Dachary)

• erasure-code: relax caucy w restrictions (#10325 Loic Dachary)

• libcephfs,ceph-fuse: allow xattr caps on inject_release_failure (#9800 John Spray)

• libcephfs,ceph-fuse: fix cap flush tid comparison (#9869 Greg Farnum)

• libcephfs,ceph-fuse: new flag to indicated sorted dcache (#9178 Yan, Zheng)

• libcephfs,ceph-fuse: prune cache before reconnecting to MDS (Yan, Zheng)

• librados: limit number of in-flight read requests (#9854 Jason Dillaman)

• libradospy: fix thread shutdown (#8797 Dan Mick)

• libradosstriper: fix locking issue in truncate (#10129 Sebastien Ponce)

• librbd: complete pending ops before closing mage (#10299 Jason Dillaman)

• librbd: fix error path on image open failure (#10030 Jason Dillaman)

• librbd: gracefully handle deleted/renamed pools (#10270 Jason Dillaman)

• librbd: handle errors when creating ioctx while listing children (#10123 Jason Dillaman)

• mds: fix compat version in MClientSession (#9945 John Spray)

• mds: fix journaler write error handling (#10011 John Spray)

• mds: fix locking for file size recovery (#10229 Yan, Zheng)

• mds: handle heartbeat_reset during shutdown (#10382 John Spray)

• mds: store backtrace for straydir (Yan, Zheng)

• mon: allow tiers for FS pools (#10135 John Spray)

• mon: fix caching of last_epoch_clean, osdmap trimming (#9987 Sage Weil)

• mon: fix ‘fs ls’ on peons (#10288 John Spray)

• mon: fix MDS health status from peons (#10151 John Spray)

• mon: fix paxos off-by-one (#9301 Sage Weil)

• msgr: simple: do not block on takeover while holding global lock (#9921 Greg Farnum)

• osd: deep scrub must not abort if hinfo is missing (#10018 Loic Dachary)

• osd: fix misdirected op detection (#9835 Sage Weil)

• osd: fix past_interval display for acting (#9752 Loic Dachary)

• osd: fix PG peering backoff when behind on osdmaps (#10431 Sage Weil)

• osd: handle no-op write with snapshot case (#10262 Ssage Weil)

• osd: use fast-dispatch (Sage Weil, Greg Farnum)

• rados: fix write to /dev/null (Loic Dachary)

• radosgw-admin: create subuser when needed (#10103 Yehuda Sadeh)

• rbd: avoid invalidating aio_write buffer during image import (#10590 Jason Dillaman)

• rbd: fix export with images > 2GB (Vicente Cheng)

• rgw: change multipart upload id magic (#10271 Georgios Dimitrakakis, Yehuda Sadeh)

• rgw: check keystone auth for S3 POST (#10062 Abhishek Lekshmanan)

• rgw: check timestamp for S3 keystone auth (#10062 Abhishek Lekshmanan)

• rgw: fix partial GET with swift (#10553 Yehuda Sadeh)

• rgw: fix quota disable (#9907 Dong Lei)

• rgw: fix rare corruption of object metadata on put (#9576 Yehuda Sadeh)

• rgw: fix S3 object copy content-type (#9478 Yehuda Sadeh)

• rgw: headers end with rn (#9254 Benedikt Fraunhofer, Yehuda Sadeh)

• rgw: remove swift user manifest DLO hash calculation (#9973 Yehuda Sadeh)

• rgw: return correct len when len is 0 (#9877 Yehuda Sadeh)

• rgw: return X-Timestamp field (#8911 Yehuda Sadeh)

• rgw: run radosgw as apache with systemd (#10125)

• rgw: sent ETag on S3 object copy (#9479 Yehuda Sadeh)

• rgw: sent HTTP status reason explicitly in fastcgi (Yehuda Sadeh)

• rgw: set length for keystone token validation (#7796 Mark Kirkwood, Yehuda Sadeh)

• rgw: set ulimit -n on sysvinit before starting daemon (#9587 Sage Weil)

• rgw: update bucket index on set_attrs (#5595 Yehuda Sadeh)

• rgw: update swift subuser permission masks when authenticating (#9918 Yehuda Sadeh)

• rgw: URL decode HTTP query params correction (#10271 Georgios Dimitrakakis, Yehuda Sadeh)

• rgw: use cached attrs while reading object attrs (#10307 Yehuda Sadeh)

• rgw: use strict_strtoll for content length (#10701 Axel Dunkel, Yehuda Sadeh)

详细信息请看 the complete changelog 。

CEPH 获取：

• Git at git://github.com/ceph/ceph.git

• Tarball at http://ceph.com/download/ceph-0.87.1.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

更多内容请看： http://ceph.com/releases/v0-87-1-giant-released/#sthash.IA14V8L9.dpuf 。

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。2010年3 月，Linus Torvalds将Ceph client合并到内 核2.6.34中。IBM开发者园地的一篇文章探讨了Ceph的架构，它的容错实现和简化海量数据管理的功能。

Ceph 中文文档： http://docs.openfans.org/ceph

Ceph 的 4 个模块：