Ceph 9.0.3 发布，分布式文件系统
欢迎加入运维网交流群:263444886Ceph 9.0.3 发布，此版本最直观的改进是内部改进（用户不可见）：OSD 的 ObjectStore 接口改进。同时还有大量关于 RGW，RBD 和其他 CephFS scrub/repair 方面的改进和修复。
更新
[*] The return code for librbd’s rbd_aio_read and Image::aio_read API methods no longer returns the number of bytes read upon success. Instead, it returns 0 upon success and a negative value upon failure.
[*] ‘ceph scrub’, ‘ceph compact’ and ‘ceph sync force are now DEPRECATED. Users should instead use ‘ceph mon scrub’, ‘ceph mon compact’ and ‘ceph mon sync force’.
[*]
‘ceph mon_metadata’ should now be used as ‘ceph mon metadata’. Thereis no need to deprecate this command (same major>
[*] The –dump-json option of “osdmaptool” is replaced by –dump json.
[*] The commands of “pg ls-by-{pool,primary,osd}” and “pg ls” now take “recovering” instead of “recovery”, to include the recovering pgs in thelisted pgs.
值得注意的改进
[*] autotools: fix out of tree build (Krxysztof Kosinski)
[*] autotools: improve make check output (Loic Dachary)
[*] buffer: add invalidate_crc() (Piotr Dalek)
[*] buffer: fix zero bug (#12252 Haomai Wang)
[*] build: fix junit detection on Fedora 22 (Ira Cooper)
[*] ceph-disk: install pip > 6.1 (#11952 Loic Dachary)
[*] cephfs-data-scan: many additions, improvements (John Spray)
[*] ceph: improve error output for ‘tell’ (#11101 Kefu Chai)
[*] ceph-objectstore-tool: misc improvements (David Zafman)
[*] ceph-objectstore-tool: refactoring and cleanup (John Spray)
[*] ceph_test_rados: test pipelined reads (Zhiqiang Wang)
[*] common: fix bit_vector extent calc (#12611 Jason Dillaman)
[*] common: make work queue addition/removal thread safe (#12662 Jason Dillaman)
[*] common: optracker improvements (Zhiqiang Wang, Jianpeng Ma)
[*]
crush: add –check to validate dangling names, max osd>
[*] crush: cleanup, sync with kernel (Ilya Dryomov)
[*] crush: fix subtree base weight on adjust_subtree_weight (#11855 Sage Weil)
[*] crypo: fix NSS leak (Jason Dillaman)
[*] crypto: fix unbalanced init/shutdown (#12598 Zheng Yan)
[*] doc: misc updates (Kefu Chai, Owen Synge, Gael Fenet-Garde, Loic Dachary, Yannick Atchy-Dalama, Jiaying Ren, Kevin Caradant, Robert Maxime, Nicolas Yong, Germain Chipaux, Arthur Gorjux, Gabriel Sentucq, Clement Lebrun, Jean-Remi Deveaux, Clair Massot, Robin Tang, Thomas Laumondais, Jordan Dorne, Yuan Zhou, Valentin Thomas, Pierre Chaumont, Benjamin Troquereau, Benjamin Sesia, Vikhyat Umrao)
[*] erasure-code: cleanup (Kefu Chai)
[*] erasure-code: improve tests (Loic Dachary)
[*] erasure-code: shec: fix recovery bugs (Takanori Nakao, Shotaro Kawaguchi)
[*] libcephfs: add pread, pwrite (Jevon Qiao)
[*] libcephfs,ceph-fuse: cache cleanup (Zheng Yan)
[*] librados: add src_fadvise_flags for copy-from (Jianpeng Ma)
[*] librados: respect default_crush_ruleset on pool_create (#11640 Yuan Zhou)
[*] librbd: fadvise for copy, export, import (Jianpeng Ma)
[*] librbd: handle NOCACHE fadvise flag (Jinapeng Ma)
[*] librbd: optionally disable allocation hint (Haomai Wang)
[*] librbd: prevent race between resize requests (#12664 Jason Dillaman)
[*] log: fix data corruption race resulting from log rotation (#12465 Samuel Just)
[*] mds: expose frags via asok (John Spray)
[*] mds: fix setting entire file layout in one setxattr (John Spray)
[*] mds: fix shutdown (John Spray)
[*] mds: handle misc corruption issues (John Spray)
[*] mds: misc fixes (Jianpeng Ma, Dan van der Ster, Zhang Zhi)
[*] mds: misc snap fixes (Zheng Yan)
[*] mds: store layout on header object (#4161 John Spray)
[*] misc performance and cleanup (Nathan Cutler, Xinxin Shu)
[*] mon: add NOFORWARD, OBSOLETE, DEPRECATE flags for mon commands (Joao Eduardo Luis)
[*] mon: add PG count to ‘ceph osd df’ output (Michal Jarzabek)
[*] mon: clean up, reorg some mon commands (Joao Eduardo Luis)
[*] mon: disallow >2 tiers (#11840 Kefu Chai)
[*] mon: fix log dump crash when debugging (Mykola Golub)
[*] mon: fix metadata update race (Mykola Golub)
[*] mon: fix refresh (#11470 Joao Eduardo Luis)
[*] mon: make blocked op messages more readable (Jianpeng Ma)
[*] mon: only send mon metadata to supporting peers (Sage Weil)
[*] mon: periodic background scrub (Joao Eduardo Luis)
[*] mon: prevent pgp_num > pg_num (#12025 Xinxin Shu)
[*] mon: reject large max_mds values (#12222 John Spray)
[*] msgr: add ceph_perf_msgr tool (Hoamai Wang)
[*] msgr: async: fix seq handling (Haomai Wang)
[*] msgr: xio: fastpath improvements (Raju Kurunkad)
[*] msgr: xio: sync with accellio v1.4 (Vu Pham)
[*] osd: clean up temp object if promotion fails (Jianpeng Ma)
[*] osd: constrain collections to meta and PGs (normal and temp) (Sage Weil)
[*] osd: filestore: clone using splice (Jianpeng Ma)
[*] osd: filestore: fix recursive lock (Xinxin Shu)
[*] osd: fix dup promotion lost op bug (Zhiqiang Wang)
[*] osd: fix temp-clearing (David Zafman)
[*] osd: include a temp namespace within each collection/pgid (Sage Weil)
[*] osd: low and high speed flush modes (Mingxin Liu)
[*] osd: peer_features includes self (David Zafman)
[*] osd: recovery, peering fixes (#11687 Samuel Just)
[*] osd: require firefly features (David Zafman)
[*] osd: set initial crush weight with more precision (Sage Weil)
[*] osd: use a temp object for recovery (Sage Weil)
[*] osd: use blkid to collection partition information (Joseph Handzik)
[*] rados: add –striper option to use libradosstriper (#10759 Sebastien Ponce)
[*] radosgw-admin: fix subuser modify output (#12286 Guce)
[*] rados: handle –snapid arg properly (Abhishek Lekshmanan)
[*] rados: improve bench buffer handling, performance (Piotr Dalek)
[*] rados: new pool import implementation (John Spray)
[*] rbd: fix link issues (Jason Dillaman)
[*] rbd: improve CLI arg parsing, usage (Ilya Dryomov)
[*] rbd: recognize queue_depth kernel option (Ilya Dryomov)
[*] rbd: support G and T units for CLI (Abhishek Lekshmanan)
[*] rbd: use image-spec and snap-spec in help (Vikhyat Umrao, Ilya Dryomov)
[*] rest-bench: misc fixes (Shawn Chen)
[*] rest-bench: support https (#3968 Yuan Zhou)
[*] rgw: add max multipart upload parts (#12146 Abshishek Dixit)
[*] rgw: add Trasnaction-Id to response (Abhishek Dixit)
[*] rgw: document layout of pools and objects (Pete Zaitcev)
[*] rgw: do not preserve ACLs when copying object (#12370 Yehuda Sadeh)
[*] rgw: fix Connection: header handling (#12298 Wido den Hollander)
[*] rgw: fix data corruptions race condition (#11749 Wuxingyi)
[*] rgw: fix JSON response when getting user quota (#12117 Wuxingyi)
[*] rgw: force content_type for swift bucket stats requests (#12095 Orit Wasserman)
[*] rgw: improved support for swift account metadata (Radoslaw Zarzynski)
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rgw: make max put>
[*] rgw: orphan detection tool (Yehuda Sadeh)
[*] rgw: swift: do not override sent content type (#12363 Orit Wasserman)
[*] rgw: swift: set Content-Length for account GET (#12158 Radoslav Zarzynski)
[*] rpm: always rebuild and install man pages for rpm (Owen Synge)
[*] rpm: misc fixes (Boris Ranto, Owen Synge, Ken Dreyer, Ira Cooper)
[*] systemd: logrotate fixes (Tim Seron, Lars Marowsky-Bree, Nathan Cutler)
[*] sysvinit compat: misc fixes (Owen Synge)
[*] test: misc fs test improvements (John Spray, Loic Dachary)
[*] test: python tests, linter cleanup (Alfredo Deza)
获取 CEPH
[*] Git at git://github.com/ceph/ceph.git
[*] Tarball at http://ceph.com/download/ceph-9.0.3.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
更多内容请看发行说明。
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
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