doc/release-notes: v0.75

Signed-off-by: Sage Weil <[email protected]>

PendingReleaseNotes

@@ -1,4 +1,4 @@
-v0.75
+v0.76
 ~~~~~
 
 - 'rbd ls' on a pool which never held rbd images now exits with code

doc/release-notes.rst

@@ -2,6 +2,87 @@
  Release Notes
 ===============
 
+v0.75
+-----
+
+This is a big release, with lots of infrastructure going in for
+firefly.  The big items include a prototype standalone frontend for
+radosgw (which does not require apache or fastcgi), tracking for read
+activity on the osds (to inform tiering decisions), preliminary cache
+pool support (no snapshots yet), and lots of bug fixes and other work
+across the tree to get ready for the next batch of erasure coding
+patches.
+
+For comparison, here are the diff stats for the last few versions::
+
+ v0.75 291 files changed, 82713 insertions(+), 33495 deletions(-)
+ v0.74 192 files changed, 17980 insertions(+), 1062 deletions(-)
+ v0.73 148 files changed, 4464 insertions(+), 2129 deletions(-)
+
+Upgrading
+~~~~~~~~~
+
+- The 'osd pool create ...' syntax has changed for erasure pools.
+
+- The default CRUSH rules and layouts are now using the latest and
+  greatest tunables and defaults.  Clusters using the old values will
+  now present with a health WARN state.  This can be disabled by
+  adding 'mon warn on legacy crush tunables = false' to ceph.conf.
+
+
+Notable Changes
+~~~~~~~~~~~~~~~
+
+* common: bloom filter improvements (Sage Weil)
+* common: fix config variable substitution (Loic Dachary)
+* crush, osd: s/rep/replicated/ for less confusion (Loic Dachary)
+* crush: refactor descend_once behavior; support set_choose*_tries for replicated rules (Sage Weil)
+* librados: fix throttle leak (and eventual deadlock) (Josh Durgin)
+* librados: read directly into user buffer (Rutger ter Borg)
+* librbd: fix use-after-free aio completion bug #5426 (Josh Durgin)
+* librbd: localize/distribute parent reads (Sage Weil)
+* mds: fix Resetter locking (Alexandre Oliva)
+* mds: fix cap migration behavior (Yan, Zheng)
+* mds: fix client session flushing (Yan, Zheng)
+* mds: fix many many multi-mds bugs (Yan, Zheng)
+* misc portability work (Noah Watkins)
+* mon, osd: create erasure style crush rules (Loic Dachary, Sage Weil)
+* mon: 'osd crush show-tunables' (Sage Weil)
+* mon: clean up initial crush rule creation (Loic Dachary)
+* mon: improve (replicate or erasure) pool creation UX (Loic Dachary)
+* mon: infrastructure to handle mixed-version mon cluster and cli/rest API (Greg Farnum)
+* mon: mkfs now idempotent (Loic Dachary)
+* mon: only seed new osdmaps to current OSDs (Sage Weil)
+* mon: track osd features in OSDMap (Joao Luis, David Zafman)
+* mon: warn if crush has non-optimal tunables (Sage Weil)
+* mount.ceph: add -n for autofs support (Steve Stock)
+* msgr: fix messenger restart race (Xihui He)
+* osd, librados: fix full cluster handling (Josh Durgin)
+* osd: add HitSet tracking for read ops (Sage Weil, Greg Farnum)
+* osd: backfill to osds not in acting set (David Zafman)
+* osd: enable new hashpspool layout by default (Sage Weil)
+* osd: erasure plugin benchmarking tool (Loic Dachary)
+* osd: fix XFS detection (Greg Farnum, Sushma Gurram)
+* osd: fix copy-get omap bug (Sage Weil)
+* osd: fix linux kernel version detection (Ilya Dryomov)
+* osd: fix memstore segv (Haomai Wang)
+* osd: fix several bugs with tier infrastructure
+* osd: fix throttle thread (Haomai Wang)
+* osd: preliminary cache pool support (no snaps) (Greg Farnum, Sage Weil)
+* rados tool: fix listomapvals (Josh Durgin)
+* rados: add 'crush location', smart replica selection/balancing (Sage Weil)
+* rados: some performance optimizations (Yehuda Sadeh)
+* rbd: add rbdmap support for upstart (Laurent Barbe)
+* rbd: expose kernel rbd client options via 'rbd map' (Ilya Dryomov)
+* rbd: fix bench-write command (Hoamai Wang)
+* rbd: support for 4096 mapped devices, up from ~250 (Ilya Dryomov)
+* rgw: allow multiple frontends (Yehuda Sadeh)
+* rgw: convert bucket info to new format on demand (Yehuda Sadeh)
+* rgw: fix misc CORS bugs (Robin H. Johnson)
+* rgw: prototype mongoose frontend (Yehuda Sadeh)
+
+
+
 v0.74
 -----