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Ceph v0.80.9 发行说明，分布式文件系统

3月21日深圳 OSC 源创会开始报名罗，送华为海思开发板

Ceph v0.80.9 昨天正式发布： http://www.oschina.net/news/60353/ceph-0-80-9 。

Ceph v0.80.9 firefly 是个 bug 修复版本，修复了 librbd 的性能回退问题；一个重要的 CRUSH 误操作；一些 RGW 线骨干的 bug。此版本后端支持 Ceph-fuse 以及 libcephfs 的 flock 和 fcntl 锁。

强烈建议 Firefly 用户升级！

值得关注的更新：

ceph-fuse: flock, fcntl lock support (Yan, Zheng, Greg Farnum)
crush: fix straw bucket weight calculation, add straw_calc_version tunable (#10095 Sage Weil)
crush: fix tree bucket (Rongzu Zhu)
crush: fix underflow of tree weights (Loic Dachary, Sage Weil)
crushtool: add –reweight (Sage Weil)
librbd: complete pending operations before losing image (#10299 Jason Dillaman)
librbd: fix read caching performance regression (#9854 Jason Dillaman)
librbd: gracefully handle deleted/renamed pools (#10270 Jason Dillaman)
mon: fix dump of chooseleaf_vary_r tunable (Sage Weil)
osd: fix PG ref leak in snaptrimmer on peering (#10421 Kefu Chai)
osd: handle no-op write with snapshot (#10262 Sage Weil)
radosgw-admin: create subuser when creating user (#10103 Yehuda Sadeh)
rgw: change multipart uplaod id magic (#10271 Georgio Dimitrakakis, Yehuda Sadeh)
rgw: don’t overwrite bucket/object owner when setting ACLs (#10978 Yehuda Sadeh)
rgw: enable IPv6 for embedded civetweb (#10965 Yehuda Sadeh)
rgw: fix partial swift GET (#10553 Yehuda Sadeh)
rgw: fix quota disable (#9907 Dong Lei)
rgw: index swift keys appropriately (#10471 Hemant Burman, Yehuda Sadeh)
rgw: make setattrs update bucket index (#5595 Yehuda Sadeh)
rgw: pass civetweb configurables (#10907 Yehuda Sadeh)
rgw: remove swift user manifest (DLO) hash calculation (#9973 Yehuda Sadeh)
rgw: return correct len for 0-len objects (#9877 Yehuda Sadeh)
rgw: S3 object copy content-type fix (#9478 Yehuda Sadeh)
rgw: send ETag on S3 object copy (#9479 Yehuda Sadeh)
rgw: send HTTP status reason explicitly in fastcgi (Yehuda Sadeh)
rgw: set ulimit -n from sysvinit (el6) init script (#9587 Sage Weil)
rgw: update swift subuser permission masks when authenticating (#9918 Yehuda Sadeh)
rgw: URL decode query params correctly (#10271 Georgio Dimitrakakis, Yehuda Sadeh)
rgw: use attrs when reading object attrs (#10307 Yehuda Sadeh)
rgw: use rn for http headers (#9254 Benedikt Fraunhofer, Yehuda Sadeh)

获取 CEPH

Git at git://github.com/ceph/ceph.git
Tarball at http://ceph.com/download/ceph-0.80.9.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

更多请看： http://ceph.com/releases/v0-80-9-firefly-released/#sthash.7jrVpQoK.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：

Ceph v0.80.9 发行说明，分布式文件系统