This is the second to last batch of development work for the Infernalis
cycle. The most intrusive change is an internal (non user-visible) change
to the OSD's ObjectStore interface. Many fixes and improvements elsewhere
across RGW, RBD, and another big pile of CephFS scrub/repair improvements.
Upgrading
---------
* 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'. There is no
need to deprecate this command (same major release since it was first
introduced).
* 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 the
listed pgs.
Notable Changes
---------------
* 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 id (Kefu Chai)
* 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)
* rgw: make max put size configurable (#6999 Yuan Zhou)
* 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)
Getting 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
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