Merging upstream version 18.2.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 0 insertions, 720 deletions

diff --git a/doc/releases/cuttlefish.rst b/doc/releases/cuttlefish.rst
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-==========
-Cuttlefish
-==========
-
-Cuttlefish is the 3rd stable release of Ceph. It is named after a type
-of cephalopod (order Sepiida) characterized by a unique internal shell, the
-cuttlebone, which is used for control of buoyancy.
-
-v0.61.9 "Cuttlefish"
-====================
-
-This point release resolves several low to medium-impact bugs across
-the code base, and fixes a performance problem (CPU utilization) with
-radosgw.  We recommend that all production cuttlefish users upgrade.
-
-Notable Changes
----------------
-
-* ceph, ceph-authtool: fix help (Danny Al-Gaaf)
-* ceph-disk: partprobe after creating journal partition
-* ceph-disk: specific fs type when mounting (Alfredo Deza)
-* ceph-fuse: fix bug when compiled against old versions
-* ceph-fuse: fix use-after-free in caching code (Yan, Zheng)
-* ceph-fuse: misc caching bugs
-* ceph.spec: remove incorrect mod_fcgi dependency (Gary Lowell)
-* crush: fix name caching
-* librbd: fix bug when unpausing cluster (Josh Durgin)
-* mds: fix LAZYIO lock hang
-* mds: fix bug in file size recovery (after client crash)
-* mon: fix paxos recovery corner case
-* osd: fix exponential backoff for slow request warnings (Loic Dachary)
-* osd: fix readdir_r usage
-* osd: fix startup for long-stopped OSDs
-* rgw: avoid std::list::size() to avoid wasting CPU cycles (Yehuda Sadeh)
-* rgw: drain pending requests during write (fixes data safety issue) (Yehuda Sadeh)
-* rgw: fix authenticated users group ACL check (Yehuda Sadeh)
-* rgw: fix bug in POST (Yehuda Sadeh)
-* rgw: fix sysvinit script 'status' command, return value (Danny Al-Gaaf)
-* rgw: reduce default log level (Yehuda Sadeh)
-
-For more detailed information, see :download:`the complete changelog <../changelog/v0.61.9.txt>`.
-
-v0.61.8 "Cuttlefish"
-====================
-
-This release includes a number of important issues, including rare
-race conditions in the OSD, a few monitor bugs, and fixes for RBD
-flush behavior.  We recommend that production users upgrade at their
-convenience.
-
-Notable Changes
----------------
-
-* librados: fix async aio completion wakeup
-* librados: fix aio completion locking
-* librados: fix rare deadlock during shutdown
-* osd: fix race when queueing recovery operations
-* osd: fix possible race during recovery
-* osd: optionally preload rados classes on startup (disabled by default)
-* osd: fix journal replay corner condition
-* osd: limit size of peering work queue batch (to speed up peering)
-* mon: fix paxos recovery corner case
-* mon: fix rare hang when monmap updates during an election
-* mon: make 'osd pool mksnap ...' avoid exposing uncommitted state
-* mon: make 'osd pool rmsnap ...' not racy, avoid exposing uncommitted state
-* mon: fix bug during mon cluster expansion
-* rgw: fix crash during multi delete operation
-* msgr: fix race conditions during osd network reinitialization
-* ceph-disk: apply mount options when remounting
-
-For more detailed information, see :download:`the complete changelog <../changelog/v0.61.8.txt>`.
-
-
-v0.61.7 "Cuttlefish"
-====================
-
-This release fixes another regression preventing monitors to start after
-undergoing certain upgrade sequences, as well as some corner cases with
-Paxos and support for unusual device names in ceph-disk/ceph-deploy.
-
-Notable Changes
----------------
-
-* mon: fix regression in latest full osdmap retrieval
-* mon: fix a long-standing bug in a paxos corner case
-* ceph-disk: improved support for unusual device names (e.g., /dev/cciss/c0d0)
-
-For more detailed information, see :download:`the complete changelog <../changelog/v0.61.7.txt>`.
-
-
-v0.61.6 "Cuttlefish"
-====================
-
-This release fixes a regression in v0.61.5 that could prevent monitors
-from restarting.  This affects any cluster that was upgraded from a
-previous version of Ceph (and not freshly created with v0.61.5).
-
-All users are strongly recommended to upgrade.
-
-Notable Changes
----------------
-
-* mon: record latest full osdmap
-* mon: work around previous bug in which latest full osdmap is not recorded
-* mon: avoid scrub while updating
-
-For more detailed information, see :download:`the complete changelog <../changelog/v0.61.6.txt>`.
-
-
-v0.61.5 "Cuttlefish"
-====================
-
-This release most improves stability of the monitor and fixes a few
-bugs with the ceph-disk utility (used by ceph-deploy).  We recommend
-that all v0.61.x users upgrade.
-
-Upgrading
----------
-
-* This release fixes a 32-bit vs 64-bit arithmetic bug with the
-  feature bits.  An unfortunate consequence of the fix is that 0.61.4
-  (or earlier) ceph-mon daemons can't form a quorum with 0.61.5 (or
-  later) monitors.  To avoid the possibility of service disruption, we
-  recommend you upgrade all monitors at once.
-
-Notable Changes
----------------
-
-* mon: misc sync improvements (faster, more reliable, better tuning)
-* mon: enable leveldb cache by default (big performance improvement)
-* mon: new scrub feature (primarily for diagnostic, testing purposes)
-* mon: fix occasional leveldb assertion on startup
-* mon: prevent reads until initial state is committed
-* mon: improved logic for trimming old osdmaps
-* mon: fix pick_addresses bug when expanding mon cluster
-* mon: several small paxos fixes, improvements
-* mon: fix bug osdmap trim behavior
-* osd: fix several bugs with PG stat reporting
-* osd: limit number of maps shared with peers (which could cause domino failures)
-* rgw: fix radosgw-admin buckets list (for all buckets)
-* mds: fix occasional client failure to reconnect
-* mds: fix bad list traversal after unlink
-* mds: fix underwater dentry cleanup (occasional crash after mds restart)
-* libcephfs, ceph-fuse: fix occasional hangs on umount
-* libcephfs, ceph-fuse: fix old bug with O_LAZY vs O_NOATIME confusion
-* ceph-disk: more robust journal device detection on RHEL/CentOS
-* ceph-disk: better, simpler locking
-* ceph-disk: do not inadvertantely mount over existing osd mounts
-* ceph-disk: better handling for unusual device names
-* sysvinit, upstart: handle symlinks in /var/lib/ceph/*
-
-For more detailed information, see :download:`the complete changelog <../changelog/v0.61.5.txt>`.
-
-
-v0.61.4 "Cuttlefish"
-====================
-
-This release resolves a possible data corruption on power-cycle when
-using XFS, a few outstanding problems with monitor sync, several
-problems with ceph-disk and ceph-deploy operation, and a problem with
-OSD memory usage during scrub.
-
-Upgrading
----------
-
-* No issues.
-
-Notable Changes
----------------
-
-* mon: fix daemon exit behavior when error is encountered on startup
-* mon: more robust sync behavior
-* osd: do not use sync_file_range(2), posix_fadvise(...DONTNEED) (can cause data corruption on power loss on XFS)
-* osd: avoid unnecessary log rewrite (improves peering speed)
-* osd: fix scrub efficiency bug (problematic on old clusters)
-* rgw: fix listing objects that start with underscore
-* rgw: fix deep URI resource, CORS bugs
-* librados python binding: fix truncate on 32-bit architectures
-* ceph-disk: fix udev rules
-* rpm: install sysvinit script on package install
-* ceph-disk: fix OSD start on machine reboot on Debian wheezy
-* ceph-disk: activate OSD when journal device appears second
-* ceph-disk: fix various bugs on RHEL/CentOS 6.3
-* ceph-disk: add 'zap' command
-* ceph-disk: add '[un]suppress-activate' command for preparing spare disks
-* upstart: start on runlevel [2345] (instead of after the first network interface starts)
-* ceph-fuse, libcephfs: handle mds session reset during session open
-* ceph-fuse, libcephfs: fix two capability revocation bugs
-* ceph-fuse: fix thread creation on startup
-* all daemons: create /var/run/ceph directory on startup if missing
-
-For more detailed information, see :download:`the complete changelog <../changelog/v0.61.4.txt>`.
-
-
-v0.61.3 "Cuttlefish"
-====================
-
-This release resolves a number of problems with the monitors and leveldb that users have
-been seeing.  Please upgrade.
-
-Upgrading
----------
-
-* There is one known problem with mon upgrades from bobtail.  If the
-  ceph-mon conversion on startup is aborted or fails for some reason, we
-  do not correctly error out, but instead continue with (in certain cases)
-  odd results.  Please be careful if you have to restart the mons during
-  the upgrade.  A 0.61.4 release with a fix will be out shortly.
-
-* In the meantime, for current cuttlefish users, v0.61.3 is safe to use.
-
-
-Notable Changes
----------------
-
-* mon: paxos state trimming fix (resolves runaway disk usage)
-* mon: finer-grained compaction on trim
-* mon: discard messages from disconnected clients (lowers load)
-* mon: leveldb compaction and other stats available via admin socket
-* mon: async compaction (lower overhead)
-* mon: fix bug incorrectly marking osds down with insufficient failure reports
-* osd: fixed small bug in pg request map
-* osd: avoid rewriting pg info on every osdmap
-* osd: avoid internal heartbeta timeouts when scrubbing very large objects
-* osd: fix narrow race with journal replay
-* mon: fixed narrow pg split race
-* rgw: fix leaked space when copying object
-* rgw: fix iteration over large/untrimmed usage logs
-* rgw: fix locking issue with ops log socket
-* rgw: require matching version of librados
-* librbd: make image creation defaults configurable (e.g., create format 2 images via qemu-img)
-* fix units in 'ceph df' output
-* debian: fix prerm/postinst hooks to start/stop daemons appropriately
-* upstart: allow uppercase daemons names (and thus hostnames)
-* sysvinit: fix enumeration of local daemons by type
-* sysvinit: fix osd weight calcuation when using -a
-* fix build on unsigned char platforms (e.g., arm)
-
-For more detailed information, see :download:`the complete changelog <../changelog/v0.61.3.txt>`.
-
-
-v0.61.2 "Cuttlefish"
-====================
-
-This release disables a monitor debug log that consumes disk space and
-fixes a bug when upgrade some monitors from bobtail to cuttlefish.
-
-Notable Changes
----------------
-
-* mon: fix conversion of stores with duplicated GV values
-* mon: disable 'mon debug dump transactions' by default
-
-For more detailed information, see :download:`the complete changelog <../changelog/v0.61.2.txt>`.
-
-
-v0.61.1 "Cuttlefish"
-====================
-
-This release fixes a problem when upgrading a bobtail cluster that had
-snapshots to cuttlefish.
-
-Notable Changes
----------------
-
-* osd: handle upgrade when legacy snap collections are present; repair from previous failed restart
-* ceph-create-keys: fix race with ceph-mon startup (which broke 'ceph-deploy gatherkeys ...')
-* ceph-create-keys: gracefully handle bad response from ceph-osd
-* sysvinit: do not assume default osd_data when automatically weighting OSD
-* osd: avoid crash from ill-behaved classes using getomapvals
-* debian: fix squeeze dependency
-* mon: debug options to log or dump leveldb transactions
-
-For more detailed information, see :download:`the complete changelog <../changelog/v0.61.1.txt>`.
-
-v0.61 "Cuttlefish"
-==================
-
-Upgrading from v0.60
---------------------
-
-* The ceph-deploy tool is now the preferred method of provisioning
-  new clusters.  For existing clusters created via mkcephfs that
-  would like to transition to the new tool, there is a migration
-  path, documented at `Transitioning to ceph-deploy`_.
-
-
-* The sysvinit script (/etc/init.d/ceph) will now verify (and, if
-  necessary, update) the OSD's position in the CRUSH map on startup.
-  (The upstart script has always worked this way.) By default, this
-  ensures that the OSD is under a 'host' with a name that matches the
-  hostname (``hostname -s``).  Legacy clusters create with mkcephfs do
-  this by default, so this should not cause any problems, but legacy
-  clusters with customized CRUSH maps with an alternate structure
-  should set ``osd crush update on start = false``.
-
-* radosgw-admin now uses the term zone instead of cluster to describe
-  each instance of the radosgw data store (and corresponding
-  collection of radosgw daemons).  The usage for the radosgw-admin
-  command and the 'rgw zone root pool' config options have changed
-  accordingly.
-
-* rbd progress indicators now go to standard error instead of standard
-  out.  (You can disable progress with --no-progress.)
-
-* The 'rbd resize ...' command now requires the --allow-shrink option
-  when resizing to a smaller size.  Expanding images to a larger size
-  is unchanged.
-
-* Please review the changes going back to 0.56.4 if you are upgrading
-  all the way from bobtail.
-
-* The old 'ceph stop_cluster' command has been removed.
-
-* The sysvinit script now uses the ceph.conf file on the remote host
-  when starting remote daemons via the '-a' option.  Note that if '-a'
-  is used in conjunction with '-c path', the path must also be present
-  on the remote host (it is not copied to a temporary file, as it was
-  previously).
-
-
-Upgrading from v0.56.4 "Bobtail"
---------------------------------
-
-Please see `Upgrading from Bobtail to Cuttlefish`_ for details.
-
-.. _Upgrading from Bobtail to Cuttlefish: ../install/upgrading-ceph/#upgrading-from-bobtail-to-cuttlefish
-
-* The ceph-deploy tool is now the preferred method of provisioning
-  new clusters.  For existing clusters created via mkcephfs that
-  would like to transition to the new tool, there is a migration
-  path, documented at `Transitioning to ceph-deploy`_.
-
-.. _Transitioning to ceph-deploy: ../rados/deployment/ceph-deploy-transition
-
-* The sysvinit script (/etc/init.d/ceph) will now verify (and, if
-  necessary, update) the OSD's position in the CRUSH map on startup.
-  (The upstart script has always worked this way.) By default, this
-  ensures that the OSD is under a 'host' with a name that matches the
-  hostname (``hostname -s``).  Legacy clusters create with mkcephfs do
-  this by default, so this should not cause any problems, but legacy
-  clusters with customized CRUSH maps with an alternate structure
-  should set ``osd crush update on start = false``.
-
-* radosgw-admin now uses the term zone instead of cluster to describe
-  each instance of the radosgw data store (and corresponding
-  collection of radosgw daemons).  The usage for the radosgw-admin
-  command and the 'rgw zone root pool' config options have changed
-  accordingly.
-
-* rbd progress indicators now go to standard error instead of standard
-  out.  (You can disable progress with --no-progress.)
-
-* The 'rbd resize ...' command now requires the --allow-shrink option
-  when resizing to a smaller size.  Expanding images to a larger size
-  is unchanged.
-
-* Please review the changes going back to 0.56.4 if you are upgrading
-  all the way from bobtail.
-
-* The old 'ceph stop_cluster' command has been removed.
-
-* The sysvinit script now uses the ceph.conf file on the remote host
-  when starting remote daemons via the '-a' option.  Note that if '-a'
-  is used in conjunction with '-c path', the path must also be present
-  on the remote host (it is not copied to a temporary file, as it was
-  previously).
-
-* The monitor is using a completely new storage strategy and
-  intra-cluster protocol.  This means that cuttlefish and bobtail
-  monitors do not talk to each other.  When you upgrade each one, it
-  will convert its local data store to the new format.  Once you
-  upgrade a majority, the quorum will be formed using the new protocol
-  and the old monitors will be blocked out until they too get
-  upgraded.  For this reason, we recommend not running a mixed-version
-  cluster for very long.
-
-* ceph-mon now requires the creation of its data directory prior to
-  --mkfs, similarly to what happens on ceph-osd.  This directory is no
-  longer automatically created, and custom scripts should be adjusted to
-  reflect just that.
-
-* The monitor now enforces that MDS names be unique.  If you have
-  multiple daemons start with the same id (e.g., ``mds.a``) the
-  second one will implicitly mark the first as failed.  This makes
-  things less confusing and makes a daemon restart faster (we no
-  longer wait for the stopped daemon to time out) but existing
-  multi-mds configurations may need to be adjusted accordingly to give
-  daemons unique names.
-
-* The 'ceph osd pool delete <poolname>' and 'rados rmpool <poolname>'
-  now have safety interlocks with loud warnings that make you confirm
-  pool removal.  Any scripts currently rely on these functions zapping
-  data without confirmation need to be adjusted accordingly.
-
-
-Notable Changes from v0.60
---------------------------
-
-* rbd: incremental backups
-* rbd: only set STRIPINGV2 feature if striping parameters are incompatible with old versions
-* rbd: require --allow-shrink for resizing images down
-* librbd: many bug fixes
-* rgw: management REST API
-* rgw: fix object corruption on COPY to self
-* rgw: new sysvinit script for rpm-based systems
-* rgw: allow buckets with '_'
-* rgw: CORS support
-* mon: many fixes
-* mon: improved trimming behavior
-* mon: fix data conversion/upgrade problem (from bobtail)
-* mon: ability to tune leveldb
-* mon: config-keys service to store arbitrary data on monitor
-* mon: 'osd crush add|link|unlink|add-bucket ...' commands
-* mon: trigger leveldb compaction on trim
-* osd: per-rados pool quotas (objects, bytes)
-* osd: tool to export, import, and delete PGs from an individual OSD data store
-* osd: notify mon on clean shutdown to avoid IO stall
-* osd: improved detection of corrupted journals
-* osd: ability to tune leveldb
-* osd: improve client request throttling
-* osd, librados: fixes to the LIST_SNAPS operation
-* osd: improvements to scrub error repair
-* osd: better prevention of wedging OSDs with ENOSPC
-* osd: many small fixes
-* mds: fix xattr handling on root inode
-* mds: fixed bugs in journal replay
-* mds: many fixes
-* librados: clean up snapshot constant definitions
-* libcephfs: calls to query CRUSH topology (used by Hadoop)
-* ceph-fuse, libcephfs: misc fixes to mds session management
-* ceph-fuse: disabled cache invalidation (again) due to potential deadlock with kernel
-* sysvinit: try to start all daemons despite early failures
-* ceph-disk: new 'list' command
-* ceph-disk: hotplug fixes for RHEL/CentOS
-* ceph-disk: fix creation of OSD data partitions on >2TB disks
-* osd: fix udev rules for RHEL/CentOS systems
-* fix daemon logging during initial startup
-
-Notable changes from v0.56 "Bobtail"
-------------------------------------
-* always use installed system leveldb (Gary Lowell)
-* auth: ability to require new cephx signatures on messages (still off by default)
-* buffer unit testing (Loic Dachary)
-* ceph tool: some CLI interface cleanups
-* ceph-disk: improve multicluster support, error handling (Sage Weil)
-* ceph-disk: support for dm-crypt (Alexandre Marangone)
-* ceph-disk: support for sysvinit, directories or partitions (not full disks)
-* ceph-disk: fix mkfs args on old distros (Alexandre Marangone)
-* ceph-disk: fix creation of OSD data partitions on >2TB disks
-* ceph-disk: hotplug fixes for RHEL/CentOS
-* ceph-disk: new 'list' command
-* ceph-fuse, libcephfs: misc fixes to mds session management
-* ceph-fuse: disabled cache invalidation (again) due to potential deadlock with kernel
-* ceph-fuse: enable kernel cache invalidation (Sam Lang)
-* ceph-fuse: fix statfs(2) reporting
-* ceph-fuse: session handling cleanup, bug fixes (Sage Weil)
-* crush: ability to create, remove rules via CLI
-* crush: update weights for all instances of an item, not just the first (Sage Weil)
-* fix daemon logging during initial startup
-* fixed log rotation (Gary Lowell)
-* init-ceph, mkcephfs: close a few security holes with -a  (Sage Weil)
-* libcephfs: calls to query CRUSH topology (used by Hadoop)
-* libcephfs: many fixes, cleanups with the Java bindings
-* libcephfs: new topo API requests for Hadoop (Noah Watkins)
-* librados: clean up snapshot constant definitions
-* librados: fix linger bugs (Josh Durgin)
-* librbd: fixed flatten deadlock (Josh Durgin)
-* librbd: fixed some locking issues with flatten (Josh Durgin)
-* librbd: many bug fixes
-* librbd: optionally wait for flush before enabling writeback (Josh Durgin)
-* many many cleanups (Danny Al-Gaaf)
-* mds, ceph-fuse: fix bugs with replayed requests after MDS restart (Sage Weil)
-* mds, ceph-fuse: manage layouts via xattrs
-* mds: allow xattrs on root
-* mds: fast failover between MDSs (enforce unique mds names)
-* mds: fix xattr handling on root inode
-* mds: fixed bugs in journal replay
-* mds: improve session cleanup (Sage Weil)
-* mds: many fixes (Yan Zheng)
-* mds: misc bug fixes with clustered MDSs and failure recovery
-* mds: misc bug fixes with readdir
-* mds: new encoding for all data types (to allow forward/backward compatibility) (Greg Farnum)
-* mds: store and update backpointers/traces on directory, file objects (Sam Lang)
-* mon: 'osd crush add|link|unlink|add-bucket ...' commands
-* mon: ability to tune leveldb
-* mon: approximate recovery, IO workload stats
-* mon: avoid marking entire CRUSH subtrees out (e.g., if an entire rack goes offline)
-* mon: config-keys service to store arbitrary data on monitor
-* mon: easy adjustment of crush tunables via 'ceph osd crush tunables ...'
-* mon: easy creation of crush rules vai 'ceph osd rule ...'
-* mon: fix data conversion/upgrade problem (from bobtail)
-* mon: improved trimming behavior
-* mon: many fixes
-* mon: new 'ceph df [detail]' command
-* mon: new checks for identifying and reporting clock drift
-* mon: rearchitected to utilize single instance of paxos and a key/value store (Joao Luis)
-* mon: safety check for pool deletion
-* mon: shut down safely if disk approaches full (Joao Luis)
-* mon: trigger leveldb compaction on trim
-* msgr: fix comparison of IPv6 addresses (fixes monitor bringup via ceph-deploy, chef)
-* msgr: fixed race in connection reset
-* msgr: optionally tune TCP buffer size to avoid throughput collapse (Jim Schutt)
-* much code cleanup and optimization (Danny Al-Gaaf)
-* osd, librados: ability to list watchers (David Zafman)
-* osd, librados: fixes to the LIST_SNAPS operation
-* osd, librados: new listsnaps command (David Zafman)
-* osd: a few journaling bug fixes
-* osd: ability to tune leveldb
-* osd: add 'noscrub', 'nodeepscrub' osdmap flags (David Zafman)
-* osd: better prevention of wedging OSDs with ENOSPC
-* osd: ceph-filestore-dump tool for debugging
-* osd: connection handling bug fixes
-* osd: deep-scrub omap keys/values
-* osd: default to libaio for the journal (some performance boost)
-* osd: fix hang in 'journal aio = true' mode (Sage Weil)
-* osd: fix pg log trimming (avoids memory bloat on degraded clusters)
-* osd: fix udev rules for RHEL/CentOS systems
-* osd: fixed bug in journal checksums (Sam Just)
-* osd: improved client request throttling
-* osd: improved handling when disk fills up (David Zafman)
-* osd: improved journal corruption detection (Sam Just)
-* osd: improved detection of corrupted journals
-* osd: improvements to scrub error repair
-* osd: make tracking of object snapshot metadata more efficient (Sam Just)
-* osd: many small fixes
-* osd: misc fixes to PG split (Sam Just)
-* osd: move pg info, log into leveldb (== better performance) (David Zafman)
-* osd: notify mon on clean shutdown to avoid IO stall
-* osd: per-rados pool quotas (objects, bytes)
-* osd: refactored watch/notify infrastructure (fixes protocol, removes many bugs) (Sam Just)
-* osd: support for improved hashing of PGs across OSDs via HASHPSPOOL pool flag and feature
-* osd: tool to export, import, and delete PGs from an individual OSD data store
-* osd: trim log more aggressively, avoid appearance of leak memory
-* osd: validate snap collections on startup
-* osd: verify snap collections on startup (Sam Just)
-* radosgw: ACL grants in headers (Caleb Miles)
-* radosgw: ability to listen to fastcgi via a port (Guilhem Lettron)
-* radosgw: fix object copy onto self (Yehuda Sadeh)
-* radosgw: misc fixes
-* rbd-fuse: new tool, package
-* rbd: avoid FIEMAP when importing from file (it can be buggy)
-* rbd: incremental backups
-* rbd: only set STRIPINGV2 feature if striping parameters are incompatible with old versions
-* rbd: require --allow-shrink for resizing images down
-* rbd: udevadm settle on map/unmap to avoid various races (Dan Mick)
-* rbd: wait for udev to settle in strategic places (avoid spurious errors, failures)
-* rgw: CORS support
-* rgw: allow buckets with '_'
-* rgw: fix Content-Length on 32-bit machines (Jan Harkes)
-* rgw: fix log rotation
-* rgw: fix object corruption on COPY to self
-* rgw: fixed >4MB range requests (Jan Harkes)
-* rgw: new sysvinit script for rpm-based systems
-* rpm/deb: do not remove /var/lib/ceph on purge (v0.59 was the only release to do so)
-* sysvinit: try to start all daemons despite early failures
-* upstart: automatically set osd weight based on df (Guilhem Lettron)
-* use less memory for logging by default
-
-
-v0.60
-=====
-
-Upgrading
----------
-
-* Please note that the recently added librados 'list_snaps' function
-  call is in a state of flux and is changing slightly in v0.61.  You
-  are advised not to make use of it in v0.59 or v0.60.
-
-Notable Changes
----------------
-
-* osd: make tracking of object snapshot metadata more efficient (Sam Just)
-* osd: misc fixes to PG split (Sam Just)
-* osd: improve journal corruption detection (Sam Just)
-* osd: improve handling when disk fills up (David Zafman)
-* osd: add 'noscrub', 'nodeepscrub' osdmap flags (David Zafman)
-* osd: fix hang in 'journal aio = true' mode (Sage Weil)
-* ceph-disk-prepare: fix mkfs args on old distros (Alexandre Marangone)
-* ceph-disk-activate: improve multicluster support, error handling (Sage Weil)
-* librbd: optionally wait for flush before enabling writeback (Josh Durgin)
-* crush: update weights for all instances of an item, not just the first (Sage Weil)
-* mon: shut down safely if disk approaches full (Joao Luis)
-* rgw: fix Content-Length on 32-bit machines (Jan Harkes)
-* mds: store and update backpointers/traces on directory, file objects (Sam Lang)
-* mds: improve session cleanup (Sage Weil)
-* mds, ceph-fuse: fix bugs with replayed requests after MDS restart (Sage Weil)
-* ceph-fuse: enable kernel cache invalidation (Sam Lang)
-* libcephfs: new topo API requests for Hadoop (Noah Watkins)
-* ceph-fuse: session handling cleanup, bug fixes (Sage Weil)
-* much code cleanup and optimization (Danny Al-Gaaf)
-* use less memory for logging by default
-* upstart: automatically set osd weight based on df (Guilhem Lettron)
-* init-ceph, mkcephfs: close a few security holes with -a  (Sage Weil)
-* rpm/deb: do not remove /var/lib/ceph on purge (v0.59 was the only release to do so)
-
-
-v0.59
-=====
-
-Upgrading
----------
-
-* The monitor is using a completely new storage strategy and
-  intra-cluster protocol.  This means that v0.59 and pre-v0.59
-  monitors do not talk to each other.  When you upgrade each one, it
-  will convert its local data store to the new format.  Once you
-  upgrade a majority, the quorum will be formed using the new protocol
-  and the old monitors will be blocked out until they too get
-  upgraded.  For this reason, we recommend not running a mixed-version
-  cluster for very long.
-
-* ceph-mon now requires the creation of its data directory prior to
-  --mkfs, similarly to what happens on ceph-osd.  This directory is no
-  longer automatically created, and custom scripts should be adjusted to
-  reflect just that.
-
-
-Notable Changes
----------------
-
- * mon: rearchitected to utilize single instance of paxos and a key/value store (Joao Luis)
- * mon: new 'ceph df [detail]' command
- * osd: support for improved hashing of PGs across OSDs via HASHPSPOOL pool flag and feature
- * osd: refactored watch/notify infrastructure (fixes protocol, removes many bugs) (Sam Just)
- * osd, librados: ability to list watchers (David Zafman)
- * osd, librados: new listsnaps command (David Zafman)
- * osd: trim log more aggressively, avoid appearance of leak memory
- * osd: misc split fixes
- * osd: a few journaling bug fixes
- * osd: connection handling bug fixes
- * rbd: avoid FIEMAP when importing from file (it can be buggy)
- * librados: fix linger bugs (Josh Durgin)
- * librbd: fixed flatten deadlock (Josh Durgin)
- * rgw: fixed >4MB range requests (Jan Harkes)
- * rgw: fix log rotation
- * mds: allow xattrs on root
- * ceph-fuse: fix statfs(2) reporting
- * msgr: optionally tune TCP buffer size to avoid throughput collapse (Jim Schutt)
- * consume less memory for logging by default
- * always use system leveldb (Gary Lowell)
-
-
-
-v0.58
-=====
-
-Upgrading
----------
-
-* The monitor now enforces that MDS names be unique.  If you have
-  multiple daemons start with the same id (e.g., ``mds.a``) the
-  second one will implicitly mark the first as failed.  This makes
-  things less confusing and makes a daemon restart faster (we no
-  longer wait for the stopped daemon to time out) but existing
-  multi-mds configurations may need to be adjusted accordingly to give
-  daemons unique names.
-
-Notable Changes
----------------
-
- * librbd: fixed some locking issues with flatten (Josh Durgin)
- * rbd: udevadm settle on map/unmap to avoid various races (Dan Mick)
- * osd: move pg info, log into leveldb (== better performance) (David Zafman)
- * osd: fix pg log trimming (avoids memory bloat on degraded clusters)
- * osd: fixed bug in journal checksums (Sam Just)
- * osd: verify snap collections on startup (Sam Just)
- * ceph-disk-prepare/activate: support for dm-crypt (Alexandre Marangone)
- * ceph-disk-prepare/activate: support for sysvinit, directories or partitions (not full disks)
- * msgr: fixed race in connection reset
- * msgr: fix comparison of IPv6 addresses (fixes monitor bringup via ceph-deploy, chef)
- * radosgw: fix object copy onto self (Yehuda Sadeh)
- * radosgw: ACL grants in headers (Caleb Miles)
- * radosgw: ability to listen to fastcgi via a port (Guilhem Lettron)
- * mds: new encoding for all data types (to allow forward/backward compatibility) (Greg Farnum)
- * mds: fast failover between MDSs (enforce unique mds names)
- * crush: ability to create, remove rules via CLI
- * many many cleanups (Danny Al-Gaaf)
- * buffer unit testing (Loic Dachary)
- * fixed log rotation (Gary Lowell)
-
-v0.57
-=====
-
-This development release has a lot of additional functionality
-accumulated over the last couple months.  Most of the bug fixes (with
-the notable exception of the MDS related work) has already been
-backported to v0.56.x, and is not mentioned here.
-
-Upgrading
----------
-
-* The 'ceph osd pool delete <poolname>' and 'rados rmpool <poolname>'
-  now have safety interlocks with loud warnings that make you confirm
-  pool removal.  Any scripts currently rely on these functions zapping
-  data without confirmation need to be adjusted accordingly.
-
-Notable Changes
----------------
-
-* osd: default to libaio for the journal (some performance boost)
-* osd: validate snap collections on startup
-* osd: ceph-filestore-dump tool for debugging
-* osd: deep-scrub omap keys/values
-* ceph tool: some CLI interface cleanups
-* mon: easy adjustment of crush tunables via 'ceph osd crush tunables ...'
-* mon: easy creation of crush rules vai 'ceph osd rule ...'
-* mon: approximate recovery, IO workload stats
-* mon: avoid marking entire CRUSH subtrees out (e.g., if an entire rack goes offline)
-* mon: safety check for pool deletion
-* mon: new checks for identifying and reporting clock drift
-* radosgw: misc fixes
-* rbd: wait for udev to settle in strategic places (avoid spurious errors, failures)
-* rbd-fuse: new tool, package
-* mds, ceph-fuse: manage layouts via xattrs
-* mds: misc bug fixes with clustered MDSs and failure recovery
-* mds: misc bug fixes with readdir
-* libcephfs: many fixes, cleanups with the Java bindings
-* auth: ability to require new cephx signatures on messages (still off by default)