doc/release-notes: v0.84

Signed-off-by: Sage Weil <sage@redhat.com>

1 files changed, 106 insertions, 0 deletions

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  Release Notes
 ===============
 
+v0.84
+=====
+
+The next Ceph development release is here!  This release contains
+several meaty items, including some MDS improvements for journaling,
+the ability to remove the CephFS file system (and name it), several
+mon cleanups with tiered pools, several OSD performance branches, a
+new "read forward" RADOS caching mode, a prototype Kinetic OSD
+backend, and various radosgw improvements (especially with the new
+standalone civetweb frontend).  And there are a zillion OSD bug
+fixes. Things are looking pretty good for the Giant release that is
+coming up in the next month.
+
+Upgrading
+---------
+
+* The *_kb perf counters on the monitor have been removed.  These are
+  replaced with a new set of *_bytes counters (e.g., cluster_osd_kb is
+  replaced by cluster_osd_bytes).
+
+* The rd_kb and wr_kb fields in the JSON dumps for pool stats (accessed via
+  the 'ceph df detail -f json-pretty' and related commands) have been replaced
+  with corresponding *_bytes fields.  Similarly, the 'total_space', 'total_used',
+  and 'total_avail' fields are replaced with 'total_bytes', 'total_used_bytes',
+  and 'total_avail_bytes' fields.
+
+* The 'rados df --format=json' output 'read_bytes' and 'write_bytes'
+  fields were incorrectly reporting ops; this is now fixed.
+
+* The 'rados df --format=json' output previously included 'read_kb' and
+  'write_kb' fields; these have been removed.  Please use 'read_bytes' and
+  'write_bytes' instead (and divide by 1024 if appropriate).
+
+Notable Changes
+---------------
+
+* ceph-conf: flush log on exit (Sage Weil)
+* ceph-dencoder: refactor build a bit to limit dependencies (Sage Weil, Dan Mick)
+* ceph.spec: split out ceph-common package, other fixes (Sandon Van Ness)
+* ceph_test_librbd_fsx: fix RNG, make deterministic (Ilya Dryomov)
+* cephtool: refactor and improve CLI tests (Joao Eduardo Luis)
+* client: improved MDS session dumps (John Spray)
+* common: fix dup log messages (#9080, Sage Weil)
+* crush: include new tunables in dump (Sage Weil)
+* crush: only require rule features if the rule is used (#8963, Sage Weil)
+* crushtool: send output to stdout, not stderr (Wido den Hollander)
+* fix i386 builds (Sage Weil)
+* fix struct vs class inconsistencies (Thorsten Behrens)
+* hadoop: update hadoop tests for Hadoop 2.0 (Haumin Chen)
+* librbd, ceph-fuse: reduce cache flush overhead (Haomai Wang)
+* librbd: fix error path when opening image (#8912, Josh Durgin)
+* mds: add file system name, enabled flag (John Spray)
+* mds: boot refactor, cleanup (John Spray)
+* mds: fix journal conversion with standby-replay (John Spray)
+* mds: separate inode recovery queue (John Spray)
+* mds: session ls, evict commands (John Spray)
+* mds: submit log events in async thread (Yan, Zheng)
+* mds: use client-provided timestamp for user-visible file metadata (Yan, Zheng)
+* mds: validate journal header on load and save (John Spray)
+* misc build fixes for OS X (John Spray)
+* misc integer size cleanups (Kevin Cox)
+* mon: add get-quota commands (Joao Eduardo Luis)
+* mon: do not create file system by default (John Spray)
+* mon: fix 'ceph df' output for available space (Xiaoxi Chen)
+* mon: fix bug when no auth keys are present (#8851, Joao Eduardo Luis)
+* mon: fix compat version for MForward (Joao Eduardo Luis)
+* mon: restrict some pool properties to tiered pools (Joao Eduardo Luis)
+* msgr: misc locking fixes for fast dispatch (#8891, Sage Weil)
+* osd: add 'dump_reservations' admin socket command (Sage Weil)
+* osd: add READFORWARD caching mode (Luis Pabon)
+* osd: add header cache for KeyValueStore (Haomai Wang)
+* osd: add prototype KineticStore based on Seagate Kinetic (Josh Durgin)
+* osd: allow map cache size to be adjusted at runtime (Sage Weil)
+* osd: avoid refcounting overhead by passing a few things by ref (Somnath Roy)
+* osd: avoid sharing PG info that is not durable (Samuel Just)
+* osd: clear slow request latency info on osd up/down (Sage Weil)
+* osd: fix PG object listing/ordering bug (Guang Yang)
+* osd: fix PG stat errors with tiering (#9082, Sage Weil)
+* osd: fix bug with long object names and rename (#8701, Sage Weil)
+* osd: fix cache full -> not full requeueing (#8931, Sage Weil)
+* osd: fix gating of messages from old OSD instances (Greg Farnum)
+* osd: fix memstore bugs with collection_move_rename, lock ordering (Sage Weil)
+* osd: improve locking for KeyValueStore (Haomai Wang)
+* osd: make tiering behave if hit_sets aren't enabled (Sage Weil)
+* osd: mark pools with incomplete clones (Sage Weil)
+* osd: misc locking fixes for fast dispatch (Samuel Just, Ma Jianpeng)
+* osd: prevent old rados clients from using tiered pools (#8714, Sage Weil)
+* osd: reduce OpTracker overhead (Somnath Roy)
+* osd: set configurable hard limits on object and xattr names (Sage Weil, Haomai Wang)
+* osd: trim old EC objects quickly; verify on scrub (Samuel Just)
+* osd: work around GCC 4.8 bug in journal code (Matt Benjamin)
+* rados bench: fix arg order (Kevin Dalley)
+* rados: fix {read,write}_ops values for df output (Sage Weil)
+* rbd: add rbdmap pre- and post post- hooks, fix misc bugs (Dmitry Smirnov)
+* rbd: improve option default behavior (Josh Durgin)
+* rgw: automatically align writes to EC pool (#8442, Yehuda Sadeh)
+* rgw: fix crash on swift CORS preflight request (#8586, Yehuda Sadeh)
+* rgw: fix memory leaks (Andrey Kuznetsov)
+* rgw: fix multipart upload (#8846, Silvain Munaut, Yehuda Sadeh)
+* rgw: improve -h (Abhishek Lekshmanan)
+* rgw: improve delimited listing of bucket, misc fixes (Yehuda Sadeh)
+* rgw: misc civetweb fixes (Yehuda Sadeh)
+* rgw: powerdns backend for global namespaces (Wido den Hollander)
+* systemd: initial systemd config files (Federico Simoncelli)
+
+
 v0.83
 =====