Ceph v0.94.8 Hammer 发布，分布式存储系统

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                　　Ceph v0.94.8 Hammer 发布了，该版本修复了很多 Bug，建议 0.94.x 的用户升级。
　　该版本详细改进记录包括：

• 　　build/ops: Add -D_LARGEFILE64_SOURCE to Linux build. (issue#16611,pr#10182, Ira Cooper)
  
• 　　build/ops: boost uuid makes valgrind complain (issue#12736, pr#9741, Sage Weil, Rohan Mars)
  
• 　　build/ops: ceph-disk s/by-parttype-uuid/by-parttypeuuid/ (issue#15867, pr#9107, Nathan Cutler)
  
• 　　common: add units to rados bench output and clean up formatting (issue#12248,pr#8960, Dmitry Yatsushkevich, Brad Hubbard, Gu Zhongyan)
  
• 　　common: config set with negative value results in “error setting ‘filestore_merge_threshold’ to ‘-40’: (22) Invalid argument” (issue#13829,pr#10291, Brad Hubbard, Kefu Chai)
  
• 　　common: linking to -lrbd causes process startup times to balloon (issue#15225,pr#8538, Richard W.M. Jones)
  
• 　　doc: fix by-parttypeuuid in ceph-disk(8) nroff (issue#15867, pr#10699, Ken Dreyer)
  
• 　　fs: double decreased the count to trim caps which will cause failing to respond to cache pressure (issue#14319, pr#8804, Zhi Zhang)
  
• 　　log: do not repeat errors to stderr (issue#14616, pr#10227, Sage Weil)
  
• 　　mds: failing file operations on kernel based cephfs mount point leaves unaccessible file behind on hammer 0.94.7 (issue#16013, pr#10198, Yan, Zheng)
  
• 　　mds: fix stray purging in ‘stripe_count > 1’ case (issue#15050, pr#8042, Yan, Zheng)
  
• 　　mds: wrongly treat symlink inode as normal file/dir when symlink inode is stale on kcephfs (issue#15702,pr#9404, Zhi Zhang)
  
• 　　mon: LibRadosMiscConnectFailure.ConnectFailure (not so intermittent) failure in upgrade/hammer-x (issue#13992, pr#8806, Sage Weil)
  
• 　　mon: Monitor: validate prefix on handle_command() (issue#16297, pr#10038, You Ji)
  
• 　　mon: drop pg temps from not the current primary in OSDMonitor (issue#16127,pr#9893, Samuel Just)
  
• 　　mon: fix calculation of %USED (issue#15641, pr#9125, Ruifeng Yang, David Zafman)
  
• 　　mon: improve reweight_by_utilization() logic (issue#15686, pr#9416, xie xingguo)
  
• 　　mon: pool quota alarm is not in effect (issue#15478, pr#8593, Danny Al-Gaaf)
  
• 　　mon: wrong ceph get mdsmap assertion (issue#14681, pr#7542, Vicente Cheng)
  
• 　　msgr: ceph-osd valgrind invalid reads/writes (issue#15870, pr#9238, Samuel Just)
  
• 　　objecter: LibRadosWatchNotifyPPTests/LibRadosWatchNotifyPP.WatchNotify2Timeout/1 segv (issue#15760, pr#9400, Sage Weil)
  
• 　　osd: OSD reporting ENOTEMPTY and crashing (issue#14766, pr#9277, Samuel Just)
  
• 　　osd: When generating past intervals due to an import end at pg epoch and fix build_past_intervals_parallel (issue#12387, issue#14438, pr#8464, David Zafman)
  
• 　　osd: acting_primary not updated on split (issue#15523, pr#9001, Sage Weil)
  
• 　　osd: assert(!actingbackfill.empty()): old watch timeout tries to queue repop on replica (issue#15391,pr#8665, Sage Weil)
  
• 　　osd: assert(rollback_info_trimmed_to == head) in PGLog (issue#13965, pr#8849, Samuel Just)
  
• 　　osd: delete one of the repeated op->mark_started in ReplicatedBackend::sub_op_modify_impl (issue#16572, pr#9977, shun-s)
  
• 　　osd: fix omap digest compare when scrub (issue#16000, pr#9271, Xinze Chi)
  
• 　　osd: is_split crash in handle_pg_create (issue#15426, pr#8805, Kefu Chai)
  
• 　　osd: objects unfound after repair (fixed by repeering the pg) (issue#15006, pr#7961, Jianpeng Ma, Loic Dachary, Kefu Chai)
  
• 　　osd: rados cppool omap to ec pool crashes osd (issue#14695, pr#8845, Jianpeng Ma)
  
• 　　osd: remove all stale osdmaps in handle_osd_map() (issue#13990, pr#9090, Kefu Chai)
  
• 　　osd: send write and read sub ops on behalf of client ops at normal priority in ECBackend (issue#14313,pr#8573, Samuel Just)
  
• 　　rbd: snap rollback: restore the link to parent (issue#14512, pr#8535, Alexey Sheplyakov)
  
• 　　rgw: S3: set EncodingType in ListBucketResult (issue#15896, pr#8987, Victor Makarov, Robin H. Johnson)
  
• 　　rgw: backport rgwx-copy-if-newer for radosgw-agent (issue#16262, pr#9671, Yehuda Sadeh)
  
• 　　rgw: bucket listing following object delete is partial (issue#14826, pr#10555, Orit Wasserman)
  
• 　　rgw: convert plain object to versioned (with null version) when removing (issue#15243, pr#8755, Yehuda Sadeh)
  
• 　　rgw: fix multi-delete query param parsing. (issue#16618, pr#10189, Robin H. Johnson)
  
• 　　rgw: have a flavor of bucket deletion to bypass GC and to trigger (issue#15557,pr#10509, Pavan Rallabhandi)
  
• 　　rgw: keep track of written_objs correctly (issue#15886, pr#9240, Yehuda Sadeh)
  
• 　　rgw: multipart ListPartsResult has missing quotes on ETag (issue#15334, pr#8475, xie xingguo, Robin H. Johnson)
  
• 　　rgw: no Last-Modified, Content-Size and X-Object-Manifest headers if no segments in DLO manifest (issue#15812, pr#9402, Radoslaw Zarzynski)
  
• 　　rgw: radosgw server abort when user passed bad parameters to set quota (issue#14190, issue#14191,pr#8313, Dunrong Huang)
  
• 　　rgw: radosgw-admin region-map set is not reporting the bucket quota correctly (issue#16815, pr#10554, Yehuda Sadeh, Orit Wasserman)
  
• 　　rgw: refrain from sending Content-Type/Content-Length for 304 responses (issue#16327, issue#13582,issue#15119, issue#14005, pr#8379, Yehuda Sadeh, Nathan Cutler, Wido den Hollander)
  
• 　　rgw: remove bucket index objects when deleting the bucket (issue#16412, pr#10530, Orit Wasserman)
  
• 　　rgw: set Access-Control-Allow-Origin to an asterisk if allowed in a rule (issue#15348, pr#8528, Wido den Hollander)
  
• 　　rgw: subset of uploaded objects via radosgw are unretrievable when using EC pool (issue#15745,pr#9407, Yehuda Sadeh)
  
• 　　rgw: subuser rm fails with status 125 (issue#14375, pr#9961, Orit Wasserman)
  
• 　　rgw: the swift key remains after removing a subuser (issue#12890, issue#14375,pr#10718, Orit Wasserman, Sangdi Xu)
  
• 　　rgw: user quota may not adjust on bucket removal (issue#14507, pr#8113, Edward Yang)
  
• 　　tests: be more generous with test timeout (issue#15403, pr#8470, Loic Dachary)
  
• 　　tests: qa/workunits/rbd: respect RBD_CREATE_ARGS environment variable (issue#16289, pr#9722, Mykola Golub)
  

　　完整记录请看：

　　http://docs.ceph.com/docs/master/_downloads/v0.94.8.txt
　　相关链接：

• 　　Git at git://github.com/ceph/ceph.git
  
• 　　Tarball at http://ceph.com/download/ceph-0.94.8.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