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doc/release-notes: v0.72 draft release notes
Signed-off-by: Sage Weil <sage@inktank.com>
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Sage Weil
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v0.72
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v0.73
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~~~~~
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* ceph-fuse and radosgw now use the same default values for the admin
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socket and log file paths that the other daemons (ceph-osd,
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ceph-mon, etc.) do. If you run these daemons as non-root, you may
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need to adjust your ceph.conf to disable these options or to adjust
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the permissions on /var/run/ceph and /var/log/ceph.
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@ -2,6 +2,293 @@
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Release Notes
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===============
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v0.72 Emperor
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-------------
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Highlights
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~~~~~~~~~~
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* common: improved crc32c performance
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* librados: new example client and class code
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* mds: many bug fixes and stability improvements
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* mon: health warnings when pool pg_num values are not reasonable
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* mon: per-pool performance stats
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* osd, librados: new object copy primitives
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* osd: improved interaction with backend file system to reduce latency
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* osd: much internal refactoring to support ongoing erasure coding and tiering support
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* rgw: bucket quotas
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* rgw: improved CORS support
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* rgw: performance improvements
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* rgw: validate S3 tokens against Keystone
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Outside of core Ceph, the Emperor release also brings::
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* radosgw-agent: support for multi-datacenter replication for disaster recovery
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* tgt: improved support for iSCSI via upstream tgt
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Packages for both are available on ceph.com.
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Upgrade sequencing
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~~~~~~~~~~~~~~~~~~
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There are no specific upgrade restrictions on the order or sequence of
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upgrading from 0.67.x Dumpling.
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It is also possible to do a rolling upgrade from 0.61.x Cuttlefish,
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but there are ordering restrictions. (This is the same set of
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restrictions for Cuttlefish to Dumpling.)::
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#. Upgrade ceph-common on all nodes that will use the command line
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'ceph' utility.
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#. Upgrade all monitors (upgrade ceph package, restart ceph-mon
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daemons). This can happen one daemon or host at a time. Note that
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because cuttlefish and dumpling monitors can't talk to each other,
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all monitors should be upgraded in relatively short succession to
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minimize the risk that an a untimely failure will reduce
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availability.
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#. Upgrade all osds (upgrade ceph package, restart ceph-osd daemons).
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This can happen one daemon or host at a time.
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#. Upgrade radosgw (upgrade radosgw package, restart radosgw daemons).
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Upgrading from v0.71
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~~~~~~~~~~~~~~~~~~~~
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* ceph-fuse and radosgw now use the same default values for the admin
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socket and log file paths that the other daemons (ceph-osd,
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ceph-mon, etc.) do. If you run these daemons as non-root, you may
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need to adjust your ceph.conf to disable these options or to adjust
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the permissions on /var/run/ceph and /var/log/ceph.
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Upgrading from v0.67 Dumpling
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* ceph-fuse and radosgw now use the same default values for the admin
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socket and log file paths that the other daemons (ceph-osd,
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ceph-mon, etc.) do. If you run these daemons as non-root, you may
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need to adjust your ceph.conf to disable these options or to adjust
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the permissions on /var/run/ceph and /var/log/ceph.
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* The MDS now disallows snapshots by default as they are not
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considered stable. The command 'ceph mds set allow_snaps' will
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enable them.
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* For clusters that were created before v0.44 (pre-argonaut, Spring
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2012) and store radosgw data, the auto-upgrade from TMAP to OMAP
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objects has been disabled. Before upgrading, make sure that any
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buckets created on pre-argonaut releases have been modified (e.g.,
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by PUTing and then DELETEing an object from each bucket). Any
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cluster created with argonaut (v0.48) or a later release or not
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using radosgw never relied on the automatic conversion and is not
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affected by this change.
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* Any direct users of the 'tmap' portion of the librados API should be
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aware that the automatic tmap -> omap conversion functionality has
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been removed.
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* Most output that used K or KB (e.g., for kilobyte) now uses a
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lower-case k to match the official SI convention. Any scripts that
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parse output and check for an upper-case K will need to be modified.
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* librados::Rados::pool_create_async() and librados::Rados::pool_delete_async()
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don't drop a reference to the completion object on error, caller needs to take
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care of that. This has never really worked correctly and we were leaking an
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object
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* 'ceph osd crush set <id> <weight> <loc..>' no longer adds the osd to the
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specified location, as that's a job for 'ceph osd crush add'. It will
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however continue to work just the same as long as the osd already exists
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in the crush map.
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* 'ceph osd crush set <id> <weight> <loc..>' no longer adds the osd to the
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specified location, as that's a job for 'ceph osd crush add'. It will
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however continue to work just the same as long as the osd already exists
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in the crush map.
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* The OSD now enforces that class write methods cannot both mutate an
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object and return data. The rbd.assign_bid method, the lone
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offender, has been removed. This breaks compatibility with
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pre-bobtail librbd clients by preventing them from creating new
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images.
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* librados now returns on commit instead of ack for synchronous calls.
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This is a bit safer in the case where both OSDs and the client crash, and
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is probably how it should have been acting from the beginning. Users are
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unlikely to notice but it could result in lower performance in some
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circumstances. Those who care should switch to using the async interfaces,
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which let you specify safety semantics precisely.
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* The C++ librados AioComplete::get_version() method was incorrectly
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returning an int (usually 32-bits). To avoid breaking library
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compatibility, a get_version64() method is added that returns the
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full-width value. The old method is deprecated and will be removed
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in a future release. Users of the C++ librados API that make use of
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the get_version() method should modify their code to avoid getting a
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value that is truncated from 64 to to 32 bits.
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Notable Changes since v0.71
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* build: fix [/usr]/sbin locations (Alan Somers)
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* ceph-fuse, radosgw: enable admin socket and logging by default
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* ceph: make -h behave when monitors are down
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* common: cache crc32c values where possible
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* common: fix looping on *BSD (Alan Somers)
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* librados, mon: ability to query/ping out-of-quorum monitor status (Joao Luis)
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* librbd python bindings: fix parent image name limit (Josh Durgin)
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* mds: avoid leaking objects when deleting truncated files (Yan, Zheng)
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* mds: fix F_GETLK (Yan, Zheng)
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* mds: fix many bugs with stray (unlinked) inodes (Yan, Zheng)
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* mds: fix many directory fragmentation bugs (Yan, Zheng)
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* mon: allow (un)setting HASHPSPOOL flag on existing pools (Joao Luis)
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* mon: make 'osd pool rename' idempotent (Joao Luis)
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* osd: COPY_GET on-wire encoding improvements (Greg Farnum)
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* osd: bloom_filter encodability, fixes, cleanups (Loic Dachary, Sage Weil)
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* osd: fix handling of racing read vs write (Samuel Just)
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* osd: reduce blocking on backing fs (Samuel Just)
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* radosgw-agent: multi-region replication/DR
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* rgw: fix/improve swift COPY support (Yehuda Sadeh)
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* rgw: misc fixes to support DR (Josh Durgin, Yehuda Sadeh)
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* rgw: per-bucket quota (Yehuda Sadeh)
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* rpm: fix junit dependencies (Alan Grosskurth)
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Notable Changes since v0.67 Dumpling
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* build cleanly under clang (Christophe Courtaut)
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* build: Makefile refactor (Roald J. van Loon)
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* build: fix [/usr]/sbin locations (Alan Somers)
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* ceph-disk: fix journal preallocation
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* ceph-fuse, radosgw: enable admin socket and logging by default
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* ceph-fuse: fix problem with readahead vs truncate race (Yan, Zheng)
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* ceph-fuse: trim deleted inodes from cache (Yan, Zheng)
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* ceph-fuse: use newer fuse api (Jianpeng Ma)
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* ceph-kvstore-tool: new tool for working with leveldb (copy, crc) (Joao Luis)
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* ceph-post-file: new command to easily share logs or other files with ceph devs
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* ceph: improve parsing of CEPH_ARGS (Benoit Knecht)
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* ceph: make -h behave when monitors are down
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* ceph: parse CEPH_ARGS env variable
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* common: bloom_filter improvements, cleanups
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* common: cache crc32c values where possible
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* common: correct SI is kB not KB (Dan Mick)
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* common: fix looping on *BSD (Alan Somers)
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* common: migrate SharedPtrRegistry to use boost::shared_ptr<> (Loic Dachary)
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* common: misc portability fixes (Noah Watkins)
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* crc32c: fix optimized crc32c code (it now detects arch support properly)
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* crc32c: improved intel-optimized crc32c support (~8x faster on my laptop!)
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* crush: fix name caching
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* doc: erasure coding design notes (Loic Dachary)
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* hadoop: removed old version of shim to avoid confusing users (Noah Watkins)
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* librados, mon: ability to query/ping out-of-quorum monitor status (Joao Luis)
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* librados: fix async aio completion wakeup
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* librados: fix installed header #includes (Dan Mick)
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* librados: get_version64() method for C++ API
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* librados: hello_world example (Greg Farnum)
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* librados: sync calls now return on commit (instead of ack) (Greg Farnum)
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* librbd python bindings: fix parent image name limit (Josh Durgin)
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* librbd, ceph-fuse: avoid some sources of ceph-fuse, rbd cache stalls
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* mds: avoid leaking objects when deleting truncated files (Yan, Zheng)
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* mds: fix F_GETLK (Yan, Zheng)
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* mds: fix LOOKUPSNAP bug
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* mds: fix heap profiler commands (Joao Luis)
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* mds: fix locking deadlock (David Disseldorp)
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* mds: fix many bugs with stray (unlinked) inodes (Yan, Zheng)
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* mds: fix many directory fragmentation bugs (Yan, Zheng)
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* mds: fix mds rejoin with legacy parent backpointer xattrs (Alexandre Oliva)
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* mds: fix rare restart/failure race during fs creation
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* mds: fix standby-replay when we fall behind (Yan, Zheng)
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* mds: fix stray directory purging (Yan, Zheng)
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* mds: notify clients about deleted files (so they can release from their cache) (Yan, Zheng)
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* mds: several bug fixes with clustered mds (Yan, Zheng)
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* mon, osd: improve osdmap trimming logic (Samuel Just)
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* mon, osd: initial CLI for configuring tiering
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* mon: a few 'ceph mon add' races fixed (command is now idempotent) (Joao Luis)
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* mon: allow (un)setting HASHPSPOOL flag on existing pools (Joao Luis)
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* mon: allow cap strings with . to be unquoted
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* mon: allow logging level of cluster log (/var/log/ceph/ceph.log) to be adjusted
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* mon: avoid rewriting full osdmaps on restart (Joao Luis)
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* mon: continue to discover peer addr info during election phase
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* mon: disallow CephFS snapshots until 'ceph mds set allow_new_snaps' (Greg Farnum)
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* mon: do not expose uncommitted state from 'osd crush {add,set} ...' (Joao Luis)
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* mon: fix 'ceph osd crush reweight ...' (Joao Luis)
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* mon: fix 'osd crush move ...' command for buckets (Joao Luis)
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* mon: fix byte counts (off by factor of 4) (Dan Mick, Joao Luis)
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* mon: fix paxos corner case
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* mon: kv properties for pools to support EC (Loic Dachary)
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* mon: make 'osd pool rename' idempotent (Joao Luis)
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* mon: modify 'auth add' semantics to make a bit more sense (Joao Luis)
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* mon: new 'osd perf' command to dump recent performance information (Samuel Just)
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* mon: new and improved 'ceph -s' or 'ceph status' command (more info, easier to read)
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* mon: some auth check cleanups (Joao Luis)
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* mon: track per-pool stats (Joao Luis)
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* mon: warn about pools with bad pg_num
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* mon: warn when mon data stores grow very large (Joao Luis)
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* monc: fix small memory leak
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* new wireshark patches pulled into the tree (Kevin Jones)
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* objecter, librados: redirect requests based on cache tier config
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* objecter: fix possible hang when cluster is unpaused (Josh Durgin)
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* osd, librados: add new COPY_FROM rados operation
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* osd, librados: add new COPY_GET rados operations (used by COPY_FROM)
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* osd: 'osd recover clone overlap limit' option to limit cloning during recovery (Samuel Just)
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* osd: COPY_GET on-wire encoding improvements (Greg Farnum)
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* osd: add 'osd heartbeat min healthy ratio' configurable (was hard-coded at 33%)
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* osd: add option to disable pg log debug code (which burns CPU)
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* osd: allow cap strings with . to be unquoted
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* osd: automatically detect proper xattr limits (David Zafman)
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* osd: avoid extra copy in erasure coding reference implementation (Loic Dachary)
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* osd: basic cache pool redirects (Greg Farnum)
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* osd: basic whiteout, dirty flag support (not yet used)
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* osd: bloom_filter encodability, fixes, cleanups (Loic Dachary, Sage Weil)
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* osd: clean up and generalize copy-from code (Greg Farnum)
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* osd: cls_hello OSD class example
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* osd: erasure coding doc updates (Loic Dachary)
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* osd: erasure coding plugin infrastructure, tests (Loic Dachary)
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* osd: experiemental support for ZFS (zfsonlinux.org) (Yan, Zheng)
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* osd: fix RWORDER flags
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* osd: fix exponential backoff of slow request warnings (Loic Dachary)
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* osd: fix handling of racing read vs write (Samuel Just)
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* osd: fix version value returned by various operations (Greg Farnum)
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* osd: generalized temp object infrastructure
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* osd: ghobject_t infrastructure for EC (David Zafman)
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* osd: improvements for compatset support and storage (David Zafman)
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* osd: infrastructure to copy objects from other OSDs
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* osd: instrument peering states (David Zafman)
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* osd: misc copy-from improvements
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* osd: opportunistic crc checking on stored data (off by default)
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* osd: properly enforce RD/WR flags for rados classes
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* osd: reduce blocking on backing fs (Samuel Just)
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* osd: refactor recovery using PGBackend (Samuel Just)
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* osd: remove old magical tmap->omap conversion
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* osd: remove old pg log on upgrade (Samuel Just)
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* osd: revert xattr size limit (fixes large rgw uploads)
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* osd: use fdatasync(2) instead of fsync(2) to improve performance (Sam Just)
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* pybind: fix blacklisting nonce (Loic Dachary)
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* radosgw-agent: multi-region replication/DR
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* rgw: complete in-progress requests before shutting down
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* rgw: default log level is now more reasonable (Yehuda Sadeh)
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* rgw: fix S3 auth with response-* query string params (Sylvain Munaut, Yehuda Sadeh)
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* rgw: fix a few minor memory leaks (Yehuda Sadeh)
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* rgw: fix acl group check (Yehuda Sadeh)
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* rgw: fix inefficient use of std::list::size() (Yehuda Sadeh)
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* rgw: fix major CPU utilization bug with internal caching (Yehuda Sadeh, Mark Nelson)
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* rgw: fix ordering of write operations (preventing data loss on crash) (Yehuda Sadeh)
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* rgw: fix ordering of writes for mulitpart upload (Yehuda Sadeh)
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* rgw: fix various CORS bugs (Yehuda Sadeh)
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* rgw: fix/improve swift COPY support (Yehuda Sadeh)
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* rgw: improve help output (Christophe Courtaut)
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* rgw: misc fixes to support DR (Josh Durgin, Yehuda Sadeh)
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* rgw: per-bucket quota (Yehuda Sadeh)
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* rgw: validate S3 tokens against keystone (Roald J. van Loon)
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* rgw: wildcard support for keystone roles (Christophe Courtaut)
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* rpm: fix junit dependencies (Alan Grosskurth)
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* sysvinit radosgw: fix status return code (Danny Al-Gaaf)
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* sysvinit rbdmap: fix error 'service rbdmap stop' (Laurent Barbe)
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* sysvinit: add condrestart command (Dan van der Ster)
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* sysvinit: fix shutdown order (mons last) (Alfredo Deza)
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v0.71
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-----
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