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News
====
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Version 2.14.0
--------------
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*(Released Tue, 2 Jun 2015)*
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New features
~~~~~~~~~~~~

- The build system now enforces external Haskell dependencies to lie in
  a supported range as declared by our new ganeti.cabal file.
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- Basic support for instance reservations has been added. Instance addition
  supports a --forthcoming option telling Ganeti to only reserve the resources
  but not create the actual instance. The instance can later be created with
  by passing the --commit option to the instance addition command.
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- Node tags starting with htools:nlocation: now have a special meaning to htools(1).
  They control between which nodes migration is possible, e.g., during hypervisor
  upgrades. See hbal(1) for details.
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- The node-allocation lock as been removed for good, thus speeding up parallel
  instance allocation and creation.
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- The external storage interface has been extended by optional ``open``
  and ``close`` scripts.
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New dependencies
~~~~~~~~~~~~~~~~

- Building the Haskell part of Ganeti now requires Cabal and cabal-install.

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Known issues
~~~~~~~~~~~~

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- Under certain conditions instance doesn't get unpaused after live
  migration (issue #1050)
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Since 2.14.0 rc1
~~~~~~~~~~~~~~~~

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- The call to the IAllocator in 'gnt-node evacuate' has been fixed.
- In opportunistic locking, only ask for those node resource locks where
  the node lock is held.
- Lock requests are repeatable now; this avoids failure of a job in a
  race condition with a signal sent to the job.
- Various improvements to the QA.


Version 2.14.0 rc2
------------------

*(Released Tue, 19 May 2015)*

This was the second release candidate in the 2.14 series. All important
changes are listed in the 2.14.0 entry.

Since 2.14.0 rc1
~~~~~~~~~~~~~~~~

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- private parameters are now properly exported to instance create scripts
- unnecessary config unlocks and upgrades have been removed, improving
  performance, in particular of cluster verification
- some rarely occuring file-descriptor leaks have been fixed
- The checks for orphan and lost volumes have been fixed to also work
  correctly when multiple volume groups are used.


Version 2.14.0 rc1
------------------

*(Released Wed, 29 Apr 2015)*

This was the first release candidate in the 2.14 series. All important
changes are listed in the latest 2.14 entry.
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Since 2.14.0 beta2
~~~~~~~~~~~~~~~~~~

The following issue has been fixed:

- A race condition where a badly timed kill of WConfD could lead to
  an incorrect configuration.

Fixes inherited from the 2.12 branch:

- Upgrade from old versions (2.5 and 2.6) was failing (issues 1070, 1019).
- gnt-network info outputs wrong external reservations (issue 1068)
- Refuse to demote master from master capability (issue 1023)

Fixes inherited from the 2.13 branch:

- bugs related to ssh-key handling of master candidate (issues 1045, 1046, 1047)


Version 2.14.0 beta2
--------------------

*(Released Thu, 26 Mar 2015)*

This was the second beta release in the 2.14 series. All important changes
are listed in the latest 2.14 entry.
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Since 2.14.0 beta1
~~~~~~~~~~~~~~~~~~

The following issues have been fixed:

- Issue 1018: Cluster init (and possibly other jobs) occasionally fail to start
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The extension of the external storage interface was not present in 2.14.0 beta1.


Version 2.14.0 beta1
--------------------

*(Released Fri, 13 Feb 2015)*
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This was the first beta release of the 2.14 series. All important changes
are listed in the latest 2.14 entry.
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Version 2.13.0
--------------
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*(Released Tue, 28 Apr 2015)*
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Incompatible/important changes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

- Ganeti now internally retries the instance creation opcode if opportunistic
  locking did not acquire nodes with enough free resources. The internal retry
  will not use opportunistic locking. In particular, instance creation, even
  if opportunistic locking is set, will never fail with ECODE_TEMP_NORES.
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- The handling of SSH security had undergone a significant change. From
  this version on, each node has an individual SSH key pair instead of
  sharing one with all nodes of the cluster. From now on, we also
  restrict SSH access to master candidates. This means that only master
  candidates can ssh into other cluster nodes and all
  non-master-candidates cannot. Refer to the UPGRADE notes
  for further instructions on the creation and distribution of the keys.
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- Ganeti now checks hypervisor version compatibility before trying an instance
  migration. It errors out if the versions are not compatible. Add the option
  --ignore-hvversions to restore the old behavior of only warning.
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- Node tags starting with htools:migration: or htools:allowmigration: now have
  a special meaning to htools(1). See hbal(1) for details.
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- The LXC hypervisor code has been repaired and improved. Instances cannot be
  migrated and cannot have more than one disk, but should otherwise work as with
  other hypervisors. OS script changes should not be necessary. LXC version
  1.0.0 or higher required.
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New features
~~~~~~~~~~~~

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- A new job filter rules system allows to define iptables-like rules for the
  job scheduler, making it easier to (soft-)drain the job queue, perform
  maintenance, and rate-limit selected job types. See gnt-filter(8) for
  details.
- Ganeti jobs can now be ad-hoc rate limited via the reason trail.
  For a set of jobs queued with "--reason=rate-limit:n:label", the job
  scheduler ensures that not more than n will be scheduled to run at the same
  time. See ganeti(7), section "Options", for details.
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- The monitoring daemon has now variable sleep times for the data
  collectors. This currently means that the granularity of cpu-avg-load
  can be configured.
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- The 'gnt-cluster verify' command now has the option
  '--verify-ssh-clutter', which verifies whether Ganeti (accidentally)
  cluttered up the 'authorized_keys' file.
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- Instance disks can now be converted from one disk template to another for many
  different template combinations. When available, more efficient conversions
  will be used, otherwise the disks are simply copied over.
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New dependencies
~~~~~~~~~~~~~~~~

- The monitoring daemon uses the PSQueue library. Be sure to install it
  if you use Mond.
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- The formerly optional regex-pcre is now an unconditional dependency because
  the new job filter rules have regular expressions as a core feature.
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Version 2.12.4
--------------

*(Released Tue, 12 May 2015)*

- Fixed Issue #1082: RAPI is unresponsive after master-failover
- Fixed Issue #1083: Cluster verify reports existing instance disks on
  non-default VGs as missing
- Fixed a possible file descriptor leak when forking jobs
- Fixed missing private parameters in the environment for OS scripts
- Fixed a performance regression when handling configuration
  (only upgrade it if it changes)
- Adapt for compilation with GHC7.8 (compiles with warnings;
  cherrypicked from 2.14)

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Known issues
~~~~~~~~~~~~

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Pending since 2.12.2:

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- Under certain conditions instance doesn't get unpaused after live
  migration (issue #1050)
- GlusterFS support breaks at upgrade to 2.12 - switches back to
  shared-file (issue #1030)
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Since 2.13.0 rc1
~~~~~~~~~~~~~~~~~~

The following issues have been fixed:

- Bugs related to ssh-key handling of master candidates (issues 1045,
  1046, 1047)

Fixes inherited from the 2.12 branch:

- Upgrade from old versions (2.5 and 2.6) was failing (issues 1070, 1019).
- gnt-network info outputs wrong external reservations (issue 1068)
- Refuse to demote master from master capability (issue 1023)


Version 2.13.0 rc1
------------------

*(Released Wed, 25 Mar 2015)*

This was the first release candidate of the 2.13 series.
All important changes are listed in the latest 2.13 entry.

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Since 2.13.0 beta1
~~~~~~~~~~~~~~~~~~

The following issues have been fixed:
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- Issue 1018: Cluster init (and possibly other jobs) occasionally fail to start


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Version 2.13.0 beta1
--------------------

*(Released Wed, 14 Jan 2015)*

This was the first beta release of the 2.13 series. All important changes
are listed in the latest 2.13 entry.


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Version 2.12.3
--------------

*(Released Wed, 29 Apr 2015)*

- Fixed Issue #1019: upgrade from 2.6.2 to 2.12 fails. cfgupgrade
  doesn't migrate the config.data file properly
- Fixed Issue 1023: Master master-capable option bug
- Fixed Issue 1068: gnt-network info outputs wrong external reservations
- Fixed Issue 1070: Upgrade of Ganeti 2.5.2 to 2.12.0 fails due to
  missing UUIDs for disks
- Fixed Issue 1073: ssconf_hvparams_* not distributed with ssconf

Inherited from the 2.11 branch:

- Fixed Issue 1032: Renew-crypto --new-node-certificates sometimes does not
  complete.
  The operation 'gnt-cluster renew-crypto --new-node-certificates' is
  now more robust against intermitten reachability errors. Nodes that
  are temporarily not reachable, are contacted with several retries.
  Nodes which are marked as offline are omitted right away.

Inherited from the 2.10 branch:

- Fixed Issue 1057: master-failover succeeds, but IP remains assigned to
  old master
- Fixed Issue 1058: Python's os.minor() does not support devices with
  high minor numbers
- Fixed Issue 1059: Luxid fails if DNS returns an IPv6 address that does
  not reverse resolve

Known issues
~~~~~~~~~~~~

Pending since 2.12.2:

- GHC 7.8 introduced some incompatible changes, so currently Ganeti
  2.12. doesn't compile on GHC 7.8
- Under certain conditions instance doesn't get unpaused after live
  migration (issue #1050)
- GlusterFS support breaks at upgrade to 2.12 - switches back to
  shared-file (issue #1030)


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Version 2.12.2
--------------

*(Released Wed, 25 Mar 2015)*

- Support for the lens Haskell library up to version 4.7 (issue #1028)
- SSH keys are now distributed only to master and master candidates
  (issue #377)
- Improved performance for operations that frequently read the
  cluster configuration
- Improved robustness of spawning job processes that occasionally caused
  newly-started jobs to timeout
- Fixed race condition during cluster verify which occasionally caused
  it to fail

Inherited from the 2.11 branch:

- Fix failing automatic glusterfs mounts (issue #984)
- Fix watcher failing to read its status file after an upgrade
  (issue #1022)
- Improve Xen instance state handling, in particular of somewhat exotic
  transitional states

Inherited from the 2.10 branch:

- Fix failing to change a diskless drbd instance to plain
  (issue #1036)
- Fixed issues with auto-upgrades from pre-2.6
  (hv_state_static and disk_state_static)
- Fix memory leak in the monitoring daemon

Inherited from the 2.9 branch:

- Fix file descriptor leak in Confd client

Known issues
~~~~~~~~~~~~

- GHC 7.8 introduced some incompatible changes, so currently Ganeti
  2.12. doesn't compile on GHC 7.8
- Under certain conditions instance doesn't get unpaused after live
  migration (issue #1050)
- GlusterFS support breaks at upgrade to 2.12 - switches back to
  shared-file (issue #1030)
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Version 2.12.1
--------------

*(Released Wed, 14 Jan 2015)*

- Fix users under which the wconfd and metad daemons run (issue #976)
- Clean up stale livelock files (issue #865)
- Fix setting up the metadata daemon's network interface for Xen
- Make watcher identify itself on disk activation
- Add "ignore-ipolicy" option to gnt-instance grow-disk
- Check disk size ipolicy during "gnt-instance grow-disk" (issue #995)

Inherited from the 2.11 branch:

- Fix counting votes when doing master failover (issue #962)
- Fix broken haskell dependencies (issues #758 and #912)
- Check if IPv6 is used directly when running SSH (issue #892)

Inherited from the 2.10 branch:

- Fix typo in gnt_cluster output (issue #1015)
- Use the Python path detected at configure time in the top-level Python
  scripts.
- Fix check for sphinx-build from python2-sphinx
- Properly check if an instance exists in 'gnt-instance console'

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Version 2.12.0
--------------
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*(Released Fri, 10 Oct 2014)*
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Incompatible/important changes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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- Ganeti is now distributed under the 2-clause BSD license.
  See the COPYING file.
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- Do not use debug mode in production. Certain daemons will issue warnings
  when launched in debug mode. Some debug logging violates some of the new
  invariants in the system (see "New features"). The logging has been kept as
  it aids diagnostics and development.

New features
~~~~~~~~~~~~

- OS install script parameters now come in public, private and secret
  varieties:

  - Public parameters are like all other parameters in Ganeti.
  - Ganeti will not log private and secret parameters, *unless* it is running
    in debug mode.
  - Ganeti will not save secret parameters to configuration. Secret parameters
    must be supplied every time you install, or reinstall, an instance.
  - Attempting to override public parameters with private or secret parameters
    results in an error. Similarly, you may not use secret parameters to
    override private parameters.

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- The move-instance tool can now attempt to allocate an instance by using
  opportunistic locking when an iallocator is used.
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- The build system creates sample systemd unit files, available under
  doc/examples/systemd. These unit files allow systemd to natively
  manage and supervise all Ganeti processes.
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- Different types of compression can be applied during instance moves, including
  user-specified ones.
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- Ganeti jobs now run as separate processes. The jobs are coordinated by
  a new daemon "WConfd" that manages cluster's configuration and locks
  for individual jobs. A consequence is that more jobs can run in parallel;
  the number is run-time configurable, see "New features" entry
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  of 2.11.0. To avoid luxid being overloaded with tracking running jobs, it
  backs of and only occasionally, in a sequential way, checks if jobs have
  finished and schedules new ones. In this way, luxid keeps responsive under
  high cluster load. The limit as when to start backing of is also run-time
  configurable.
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- The metadata daemon is now optionally available, as part of the
  partial implementation of the OS-installs design. It allows pass
  information to OS install scripts or to instances.
  It is also possible to run Ganeti without the daemon, if desired.
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- Detection of user shutdown of instances has been implemented for Xen
  as well.
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New dependencies
~~~~~~~~~~~~~~~~

- The KVM CPU pinning no longer uses the affinity python package, but psutil
  instead. The package is still optional and needed only if the feature is to
  be used.

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Incomplete features
~~~~~~~~~~~~~~~~~~~

The following issues are related to features which are not completely
implemented in 2.12:

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- Issue 885: Network hotplugging on KVM sometimes makes an instance
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  unresponsive
- Issues 708 and 602: The secret parameters are currently still written
  to disk in the job queue.
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- Setting up the metadata network interface under Xen isn't fully
  implemented yet.
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Known issues
~~~~~~~~~~~~

- *Wrong UDP checksums in DHCP network packets:*
  If an instance communicates with the metadata daemon and uses DHCP to
  obtain its IP address on the provided virtual network interface,
  it can happen that UDP packets have a wrong checksum, due to
  a bug in virtio. See for example https://bugs.launchpad.net/bugs/930962

  Ganeti works around this bug by disabling the UDP checksums on the way
  from a host to instances (only on the special metadata communication
  network interface) using the ethtool command. Therefore if using
  the metadata daemon the host nodes should have this tool available.
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- The metadata daemon is run as root in the split-user mode, to be able
  to bind to port 80.
  This should be improved in future versions, see issue #949.

Since 2.12.0 rc2
~~~~~~~~~~~~~~~~

The following issues have been fixed:

- Fixed passing additional parameters to RecreateInstanceDisks over
  RAPI.
- Fixed the permissions of WConfd when running in the split-user mode.
  As WConfd takes over the previous master daemon to manage the
  configuration, it currently runs under the masterd user.
- Fixed the permissions of the metadata daemon  wn running in the
  split-user mode (see Known issues).
- Watcher now properly adds a reason trail entry when initiating disk
  checks.
- Fixed removing KVM parameters introduced in 2.12 when downgrading a
  cluster to 2.11: "migration_caps", "disk_aio" and "virtio_net_queues".
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- Improved retrying of RPC calls that fail due to network errors.
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Version 2.12.0 rc2
------------------

*(Released Mon, 22 Sep 2014)*

This was the second release candidate of the 2.12 series.
All important changes are listed in the latest 2.12 entry.

Since 2.12.0 rc1
~~~~~~~~~~~~~~~~

The following issues have been fixed:

- Watcher now checks if WConfd is running and functional.
- Watcher now properly adds reason trail entries.
- Fixed NIC options in Xen's config files.

Inherited from the 2.10 branch:

- Fixed handling of the --online option
- Add warning against hvparam changes with live migrations, which might
  lead to dangerous situations for instances.
- Only the LVs in the configured VG are checked during cluster verify.
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Version 2.12.0 rc1
------------------

*(Released Wed, 20 Aug 2014)*

This was the first release candidate of the 2.12 series.
All important changes are listed in the latest 2.12 entry.

Since 2.12.0 beta1
~~~~~~~~~~~~~~~~~~

The following issues have been fixed:

- Issue 881: Handle communication errors in mcpu
- Issue 883: WConfd leaks memory for some long operations
- Issue 884: Under heavy load the IAllocator fails with a "missing
  instance" error

Inherited from the 2.10 branch:

- Improve the recognition of Xen domU states
- Automatic upgrades:
  - Create the config backup archive in a safe way
  - On upgrades, check for upgrades to resume first
  - Pause watcher during upgrade
- Allow instance disks to be added with --no-wait-for-sync


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Version 2.12.0 beta1
--------------------

*(Released Mon, 21 Jul 2014)*

This was the first beta release of the 2.12 series. All important changes
are listed in the latest 2.12 entry.
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Version 2.11.7
--------------

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*(Released Fri, 17 Apr 2015)*
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- The operation 'gnt-cluster renew-crypto --new-node-certificates' is
  now more robust against intermitten reachability errors. Nodes that
  are temporarily not reachable, are contacted with several retries.
  Nodes which are marked as offline are omitted right away.


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Version 2.11.6
--------------

*(Released Mon, 22 Sep 2014)*

- Ganeti is now distributed under the 2-clause BSD license.
  See the COPYING file.
- Fix userspace access checks.
- Various documentation fixes have been added.

Inherited from the 2.10 branch:

- The --online option now works as documented.
- The watcher is paused during cluster upgrades; also, upgrade
  checks for upgrades to resume first.
- Instance disks can be added with --no-wait-for-sync.


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Version 2.11.5
--------------

*(Released Thu, 7 Aug 2014)*

Inherited from the 2.10 branch:

Important security release. In 2.10.0, the
'gnt-cluster upgrade' command was introduced. Before
performing an upgrade, the configuration directory of
the cluster is backed up. Unfortunately, the archive was
written with permissions that make it possible for
non-privileged users to read the archive and thus have
access to cluster and RAPI keys. After this release,
the archive will be created with privileged access only.

We strongly advise you to restrict the permissions of
previously created archives. The archives are found in
/var/lib/ganeti*.tar (unless otherwise configured with
--localstatedir or --with-backup-dir).

If you suspect that non-privileged users have accessed
your archives already, we advise you to renew the
cluster's crypto keys using 'gnt-cluster renew-crypto'
and to reset the RAPI credentials by editing
/var/lib/ganeti/rapi_users (respectively under a
different path if configured differently with
--localstatedir).

Other changes included in this release:

- Fix handling of Xen instance states.
- Fix NIC configuration with absent NIC VLAN
- Adapt relative path expansion in PATH to new environment
- Exclude archived jobs from configuration backups
- Fix RAPI for split query setup
- Allow disk hot-remove even with chroot or SM

Inherited from the 2.9 branch:

- Make htools tolerate missing 'spfree' on luxi


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Version 2.11.4
--------------

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*(Released Thu, 31 Jul 2014)*
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- Improved documentation of the instance shutdown behavior.

Inherited from the 2.10 branch:

- KVM: fix NIC configuration with absent NIC VLAN (Issue 893)
- Adapt relative path expansion in PATH to new environment
- Exclude archived jobs from configuration backup
- Expose early_release for ReplaceInstanceDisks
- Add backup directory for configuration backups for upgrades
- Fix BlockdevSnapshot in case of non lvm-based disk
- Improve RAPI error handling for queries in non-existing items
- Allow disk hot-remove even with chroot or SM
- Remove superflous loop in instance queries (Issue 875)

Inherited from the 2.9 branch:

- Make ganeti-cleaner switch to save working directory (Issue 880)


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Version 2.11.3
--------------

*(Released Wed, 9 Jul 2014)*

- Readd nodes to their previous node group
- Remove old-style gnt-network connect

Inherited from the 2.10 branch:
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- Make network_vlan an optional OpParam
- hspace: support --accept-existing-errors
- Make hspace support --independent-groups
- Add a modifier for a group's allocation policy
- Export VLAN nicparam to NIC configuration scripts
- Fix gnt-network client to accept vlan info
- Support disk hotplug with userspace access

Inherited from the 2.9 branch:

- Make htools tolerate missing "spfree" on luxi
- Move the design for query splitting to the implemented list
- Add tests for DRBD setups with empty first resource

Inherited from the 2.8 branch:

- DRBD parser: consume initial empty resource lines


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Version 2.11.2
--------------

*(Released Fri, 13 Jun 2014)*

- Improvements to KVM wrt to the kvmd and instance shutdown behavior.
  WARNING: In contrast to our standard policy, this bug fix update
  introduces new parameters to the configuration. This means in
  particular that after an upgrade from 2.11.0 or 2.11.1, 'cfgupgrade'
  needs to be run, either manually or explicitly by running
  'gnt-cluster upgrade --to 2.11.2' (which requires that they
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  had configured the cluster with --enable-versionfull).
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  This also means, that it is not easily possible to downgrade from
  2.11.2 to 2.11.1 or 2.11.0. The only way is to go back to 2.10 and
  back.

Inherited from the 2.10 branch:

- Check for SSL encoding inconsistencies
- Check drbd helper only in VM capable nodes
- Improvements in statistics utils

Inherited from the 2.9 branch:

- check-man-warnings: use C.UTF-8 and set LC_ALL


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Version 2.11.1
--------------

*(Released Wed, 14 May 2014)*

- Add design-node-security.rst to docinput
- kvm: use a dedicated QMP socket for kvmd

Inherited from the 2.10 branch:

- Set correct Ganeti version on setup commands
- Add a utility to combine shell commands
- Add design doc for performance tests
- Fix failed DRBD disk creation cleanup
- Hooking up verification for shared file storage
- Fix --shared-file-storage-dir option of gnt-cluster modify
- Clarify default setting of 'metavg'
- Fix invocation of GetCommandOutput in QA
- Clean up RunWithLocks
- Add an exception-trapping thread class
- Wait for delay to provide interruption information
- Add an expected block option to RunWithLocks
- Track if a QA test was blocked by locks
- Add a RunWithLocks QA utility function
- Add restricted migration
- Add an example for node evacuation
- Add a test for parsing version strings
- Tests for parallel job execution
- Fail in replace-disks if attaching disks fails
- Fix passing of ispecs in cluster init during QA
- Move QAThreadGroup to qa_job_utils.py
- Extract GetJobStatuses and use an unified version
- Run disk template specific tests only if possible

Inherited from the 2.9 branch:

- If Automake version > 1.11, force serial tests
- KVM: set IFF_ONE_QUEUE on created tap interfaces
- Add configure option to pass GHC flags


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Version 2.11.0
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Incompatible/important changes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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- ``gnt-node list`` no longer shows disk space information for shared file
  disk templates because it is not a node attribute. (For example, if you have
  both the file and shared file disk templates enabled, ``gnt-node list`` now
  only shows information about the file disk template.)
- The shared file disk template is now in the new 'sharedfile' storage type.
  As a result, ``gnt-node list-storage -t file`` now only shows information
  about the file disk template and you may use ``gnt-node list-storage -t
  sharedfile`` to query storage information for the shared file disk template.
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- Over luxi, syntactially incorrect queries are now rejected as a whole;
  before, a 'SumbmitManyJobs' request was partially executed, if the outer
  structure of the request was syntactically correct. As the luxi protocol
  is internal (external applications are expected to use RAPI), the impact
  of this incompatible change should be limited.
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- Queries for nodes, instances, groups, backups and networks are now
  exclusively done via the luxi daemon. Legacy python code was removed,
  as well as the --enable-split-queries configuration option.
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- Orphan volumes errors are demoted to warnings and no longer affect the exit
  code of ``gnt-cluster verify``.
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- RPC security got enhanced by using different client SSL certificates
  for each node. In this context 'gnt-cluster renew-crypto' got a new
  option '--renew-node-certificates', which renews the client
  certificates of all nodes. After a cluster upgrade from pre-2.11, run
  this to create client certificates and activate this feature.
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New features
~~~~~~~~~~~~

- Instance moves, backups and imports can now use compression to transfer the
  instance data.
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- Node groups can be configured to use an SSH port different than the
  default 22.
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- Added experimental support for Gluster distributed file storage as the
  ``gluster`` disk template under the new ``sharedfile`` storage type through
  automatic management of per-node FUSE mount points. You can configure the
  mount point location at ``gnt-cluster init`` time by using the new
  ``--gluster-storage-dir`` switch.
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- Job scheduling is now handled by luxid, and the maximal number of jobs running
  in parallel is a run-time parameter of the cluster.
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- A new tool for planning dynamic power management, called ``hsqueeze``, has
  been added. It suggests nodes to power up or down and corresponding instance
  moves.
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New dependencies
~~~~~~~~~~~~~~~~
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The following new dependencies have been added:

For Haskell:
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- ``zlib`` library (http://hackage.haskell.org/package/base64-bytestring)
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- ``base64-bytestring`` library (http://hackage.haskell.org/package/zlib),
  at least version 1.0.0.0
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- ``lifted-base`` library (http://hackage.haskell.org/package/lifted-base)

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- ``lens`` library (http://hackage.haskell.org/package/lens)

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Since 2.11.0 rc1
~~~~~~~~~~~~~~~~

- Fix Xen instance state

Inherited from the 2.10 branch:

- Fix conflict between virtio + spice or soundhw
- Fix bitarray ops wrt PCI slots
- Allow releases scheduled 5 days in advance
- Make watcher submit queries low priority
- Fix specification of TIDiskParams
- Add unittests for instance modify parameter renaming
- Add renaming of instance custom params
- Add RAPI symmetry tests for groups
- Extend RAPI symmetry tests with RAPI-only aliases
- Add test for group custom parameter renaming
- Add renaming of group custom ndparams, ipolicy, diskparams
- Add the RAPI symmetry test for nodes
- Add aliases for nodes
- Allow choice of HTTP method for modification
- Add cluster RAPI symmetry test
- Fix failing cluster query test
- Add aliases for cluster parameters
- Add support for value aliases to RAPI
- Provide tests for GET/PUT symmetry
- Sort imports
- Also consider filter fields for deciding if using live data
- Document the python-fdsend dependency
- Verify configuration version number before parsing
- KVM: use running HVPs to calc blockdev options
- KVM: reserve a PCI slot for the SCSI controller
- Check for LVM-based verification results only when enabled
- Fix "existing" typos
- Fix output of gnt-instance info after migration
- Warn in UPGRADE about not tar'ing exported insts
- Fix non-running test and remove custom_nicparams rename
- Account for NODE_RES lock in opportunistic locking
- Fix request flooding of noded during disk sync

Inherited from the 2.9 branch:

- Make watcher submit queries low priority
- Fix failing gnt-node list-drbd command
- Update installation guide wrt to DRBD version
- Fix list-drbd QA test
- Add messages about skipped QA disk template tests
- Allow QA asserts to produce more messages
- Set exclusion tags correctly in requested instance
- Export extractExTags and updateExclTags
- Document spindles in the hbal man page
- Sample logrotate conf breaks permissions with split users
- Fix 'gnt-cluster' and 'gnt-node list-storage' outputs

Inherited from the 2.8 branch:

- Add reason parameter to RAPI client functions
- Include qa/patch in Makefile
- Handle empty patches better
- Move message formatting functions to separate file
- Add optional ordering of QA patch files
- Allow multiple QA patches
- Refactor current patching code


Version 2.11.0 rc1
------------------

*(Released Thu, 20 Mar 2014)*
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This was the first RC release of the 2.11 series. Since 2.11.0 beta1:

- Convert int to float when checking config. consistency
- Rename compression option in gnt-backup export

Inherited from the 2.9 branch:

- Fix error introduced during merge
- gnt-cluster copyfile: accept relative paths

Inherited from the 2.8 branch:

- Improve RAPI detection of the watcher
- Add patching QA configuration files on buildbots
- Enable a timeout for instance shutdown
- Allow KVM commands to have a timeout
- Allow xen commands to have a timeout
- Fix wrong docstring


Version 2.11.0 beta1
--------------------

*(Released Wed, 5 Mar 2014)*

This was the first beta release of the 2.11 series. All important changes
are listed in the latest 2.11 entry.

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Version 2.10.7
--------------

*(Released Thu, 7 Aug 2014)*

Important security release. In 2.10.0, the
'gnt-cluster upgrade' command was introduced. Before
performing an upgrade, the configuration directory of
the cluster is backed up. Unfortunately, the archive was
written with permissions that make it possible for
non-privileged users to read the archive and thus have
access to cluster and RAPI keys. After this release,
the archive will be created with privileged access only.

We strongly advise you to restrict the permissions of
previously created archives. The archives are found in
/var/lib/ganeti*.tar (unless otherwise configured with
--localstatedir or --with-backup-dir).

If you suspect that non-privileged users have accessed
your archives already, we advise you to renew the
cluster's crypto keys using 'gnt-cluster renew-crypto'
and to reset the RAPI credentials by editing
/var/lib/ganeti/rapi_users (respectively under a
different path if configured differently with
--localstatedir).

Other changes included in this release:

- Fix handling of Xen instance states.
- Fix NIC configuration with absent NIC VLAN
- Adapt relative path expansion in PATH to new environment
- Exclude archived jobs from configuration backups
- Fix RAPI for split query setup
- Allow disk hot-remove even with chroot or SM

Inherited from the 2.9 branch:

- Make htools tolerate missing 'spfree' on luxi


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Version 2.10.6
--------------

*(Released Mon, 30 Jun 2014)*

- Make Ganeti tolerant towards differnt openssl library
  version on different nodes (issue 853).
- Allow hspace to make useful predictions in multi-group
  clusters with one group overfull (isse 861).
- Various gnt-network related fixes.
- Fix disk hotplug with userspace access.
- Various documentation errors fixed.


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Version 2.10.5
--------------

*(Released Mon, 2 Jun 2014)*

- Two new options have been added to gnt-group evacuate.
  The 'sequential' option forces all the evacuation steps to
  be carried out sequentially, thus avoiding congestion on a
  slow link between node groups. The 'force-failover' option
  disallows migrations and forces failovers to be used instead.
  In this way evacuation to a group with vastly differnet
  hypervisor is possible.
- In tiered allocation, when looking for ways on how to shrink
  an instance, the canoncial path is tried first, i.e., in each
  step reduce on the resource most placements are blocked on. Only
  if no smaller fitting instance can be found shrinking a single
  resource till fit is tried.
- For finding the placement of an instance, the duplicate computations
  in the computation of the various cluster scores are computed only
  once. This significantly improves the performance of hspace for DRBD
  on large clusters; for other clusters, a slight performance decrease
  might occur. Moreover, due to the changed order, floating point
  number inaccuracies accumulate differently, thus resulting in different
  cluster scores. It has been verified that the effect of these different
  roundings is less than 1e-12.
- network queries fixed with respect to instances
- relax too strict prerequisite in LUClusterSetParams for DRBD helpers
- VArious improvements to QA and build-time tests


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Version 2.10.4
--------------

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*(Released Thu, 15 May 2014)*
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- Support restricted migration in hbal
- Fix for the --shared-file-storage-dir of gnt-cluster modify (issue 811)
- Fail in replace-disks if attaching disks fails (issue 814)
- Set IFF_ONE_QUEUE on created tap interfaces for KVM
- Small fixes and enhancements in the build system
- Various documentation fixes (e.g. issue 810)


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Version 2.10.3
--------------

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*(Released Wed, 16 Apr 2014)*
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- Fix filtering of pending jobs with -o id (issue 778)
- Make RAPI API calls more symmetric (issue 770)
- Make parsing of old cluster configuration more robust (issue 783)
- Fix wrong output of gnt-instance info after migrations
- Fix reserved PCI slots for KVM hotplugging
- Use runtime hypervisor parameters to calculate bockdevice options for KVM
- Fix high node daemon load during disk sync if the sync is paused manually
  (issue 792)
- Improve opportunistic locking during instance creation (issue 791)

Inherited from the 2.9 branch:

- Make watcher submit queries low priority (issue 772)
- Add reason parameter to RAPI client functions (issue 776)
- Fix failing gnt-node list-drbd command (issue 777)
- Properly display fake job locks in gnt-debug.
- small fixes in documentation


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Version 2.10.2
--------------

*(Released Mon, 24 Mar 2014)*

- Fix conflict between virtio + spice or soundhw (issue 757)
- accept relative paths in gnt-cluster copyfile (issue 754)
- Introduce shutdown timeout for 'xm shutdown' command
- Improve RAPI detection of the watcher (issue 752)

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Version 2.10.1
--------------

*(Released Wed, 5 Mar 2014)*

- Fix incorrect invocation of hooks on offline nodes (issue 742)
- Fix incorrect exit code of gnt-cluster verify in certain circumstances
  (issue 744)

Inherited from the 2.9 branch:

- Fix overflow problem in hbal that caused it to break when waiting for
  jobs for more than 10 minutes (issue 717)
- Make hbal properly handle non-LVM storage
- Properly export and import NIC parameters, and do so in a backwards
  compatible way (issue 716)
- Fix net-common script in case of routed mode (issue 728)
- Improve documentation (issues 724, 730)


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Version 2.10.0
--------------
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*(Released Thu, 20 Feb 2014)*
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Incompatible/important changes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

- Adding disks with 'gnt-instance modify' now waits for the disks to sync per
  default. Specify --no-wait-for-sync to override this behavior.
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- The Ganeti python code now adheres to a private-module layout. In particular,
  the module 'ganeti' is no longer in the python search path.
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- On instance allocation, the iallocator now considers non-LVM storage
  properly. In particular, actual file storage space information is used
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  when allocating space for a file/sharedfile instance.
- When disabling disk templates cluster-wide, the cluster now first
  checks whether there are instances still using those templates.
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- 'gnt-node list-storage' now also reports storage information about
  file-based storage types.
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- In case of non drbd instances, export \*_SECONDARY environment variables
  as empty strings (and not "None") during 'instance-migrate' related hooks.
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New features
~~~~~~~~~~~~
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- KVM hypervisors can now access RBD storage directly without having to
  go through a block device.
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- A new command 'gnt-cluster upgrade' was added that automates the upgrade
  procedure between two Ganeti versions that are both 2.10 or higher.
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- The move-instance command can now change disk templates when moving
  instances, and does not require any node placement options to be
  specified if the destination cluster has a default iallocator.
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- Hail and hbal now have the (optional) capability of accessing average CPU
  load information through the monitoring deamon, and to use it to dynamically
  adapt the allocation of instances.
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- Hotplug support. Introduce new option '--hotplug' to ``gnt-instance modify``
  so that disk and NIC modifications take effect without the need of actual
  reboot. There are a couple of constrains currently for this feature:

   - only KVM hypervisor (versions >= 1.0) supports it,
   - one can not (yet) hotplug a disk using userspace access mode for RBD
   - in case of a downgrade instances should suffer a reboot in order to
     be migratable (due to core change of runtime files)
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Misc changes
~~~~~~~~~~~~

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  coverage for logical units was improved significantly.
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- Opcodes are entirely generated from Haskell using the tool 'hs2py' and
  the module 'src/Ganeti/OpCodes.hs'.
- Constants are also generated from Haskell using the tool
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  exception of socket related constants, which require changing the
  cluster configuration file, and HVS related constants, because they
  are part of a port of instance queries to Haskell.  As a result, these
  changes will be part of the next release of Ganeti.

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New dependencies
~~~~~~~~~~~~~~~~

The following new dependencies have been added/updated.

Python

- The version requirements for ``python-mock`` have increased to at least
  version 1.0.1. It is still used for testing only.
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  but required for KVM NIC hotplugging to work.
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~~~~~~~~~~~~~~~~

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- Fix integer overflow problem in hbal


Version 2.10.0 rc3
------------------

*(Released Wed, 12 Feb 2014)*

This was the third RC release of the 2.10 series. Since 2.10.0 rc2:

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- Improved hotplug robustness
- Start Ganeti daemons after ensure-dirs during upgrade
- Documentation improvements

Inherited from the 2.9 branch:

- Fix the RAPI instances-multi-alloc call
- assign unique filenames to file-based disks
- gracefully handle degraded non-diskless instances with 0 disks (issue 697)
- noded now runs with its specified group, which is the default group,
  defaulting to root (issue 707)
- make using UUIDs to identify nodes in gnt-node consistently possible
  (issue 703)

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Version 2.10.0 rc2
------------------

*(Released Fri, 31 Jan 2014)*

This was the second RC release of the 2.10 series. Since 2.10.0 rc1:
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- Documentation improvements
- Run drbdsetup syncer only on network attach
- Include target node in hooks nodes for migration
- Fix configure dirs
- Support post-upgrade hooks during cluster upgrades

Inherited from the 2.9 branch:

- Ensure that all the hypervisors exist in the config file (Issue 640)
- Correctly recognise the role as master node (Issue 687)
- configure: allow detection of Sphinx 1.2+ (Issue 502)
- gnt-instance now honors the KVM path correctly (Issue 691)

Inherited from the 2.8 branch:

- Change the list separator for the usb_devices parameter from comma to space.
  Commas could not work because they are already the hypervisor option
  separator (Issue 649)
- Add support for blktap2 file-driver (Issue 638)
- Add network tag definitions to the haskell codebase (Issue 641)
- Fix RAPI network tag handling
- Add the network tags to the tags searched by gnt-cluster search-tags
- Fix caching bug preventing jobs from being cancelled
- Start-master/stop-master was always failing if ConfD was disabled. (Issue 685)

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Version 2.10.0 rc1
------------------

*(Released Tue, 17 Dec 2013)*

This was the first RC release of the 2.10 series. Since 2.10.0 beta1:
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- All known issues in 2.10.0 beta1 have been resolved (see changes from
  the 2.8 branch).
- Improve handling of KVM runtime files from earlier Ganeti versions
- Documentation fixes

Inherited from the 2.9 branch:

- use custom KVM path if set for version checking
- SingleNotifyPipeCondition: don't share pollers

Inherited from the 2.8 branch:

- Fixed Luxi daemon socket permissions after master-failover
- Improve IP version detection code directly checking for colons rather than
  passing the family from the cluster object
- Fix NODE/NODE_RES locking in LUInstanceCreate by not acquiring NODE_RES locks
  opportunistically anymore (Issue 622)
- Allow link local IPv6 gateways (Issue 624)
- Fix error printing (Issue 616)
- Fix a bug in InstanceSetParams concerning names: in case no name is passed in
  disk modifications, keep the old one. If name=none then set disk name to
  None.
- Update build_chroot script to work with the latest hackage packages
- Add a packet number limit to "fping" in master-ip-setup (Issue 630)
- Fix evacuation out of drained node (Issue 615)
- Add default file_driver if missing (Issue 571)
- Fix job error message after unclean master shutdown (Issue 618)
- Lock group(s) when creating instances (Issue 621)
- SetDiskID() before accepting an instance (Issue 633)
- Allow the ext template disks to receive arbitrary parameters, both at creation
  time and while being modified
- Xen handle domain shutdown (future proofing cherry-pick)
- Refactor reading live data in htools (future proofing cherry-pick)


Version 2.10.0 beta1
--------------------

*(Released Wed, 27 Nov 2013)*

This was the first beta release of the 2.10 series. All important changes
are listed in the latest 2.10 entry.

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Known issues
~~~~~~~~~~~~

The following issues are known to be present in the beta and will be fixed
before rc1.

- Issue 477: Wrong permissions for confd LUXI socket
- Issue 621: Instance related opcodes do not aquire network/group locks
- Issue 622: Assertion Error: Node locks differ from node resource locks
- Issue 623: IPv6 Masterd <-> Luxid communication error

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Version 2.9.6
-------------

*(Released Mon, 7 Apr 2014)*

- Improve RAPI detection of the watcher (Issue 752)
- gnt-cluster copyfile: accept relative paths (Issue 754)
- Make watcher submit queries low priority (Issue 772)
- Add reason parameter to RAPI client functions (Issue 776)
- Fix failing gnt-node list-drbd command (Issue 777)
- Properly display fake job locks in gnt-debug.
- Enable timeout for instance shutdown
- small fixes in documentation


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Version 2.9.5
-------------

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*(Released Tue, 25 Feb 2014)*
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- Fix overflow problem in hbal that caused it to break when waiting for
  jobs for more than 10 minutes (issue 717)
- Make hbal properly handle non-LVM storage
- Properly export and import NIC parameters, and do so in a backwards
  compatible way (issue 716)
- Fix net-common script in case of routed mode (issue 728)
- Improve documentation (issues 724, 730)


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Version 2.9.4
-------------

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*(Released Mon, 10 Feb 2014)*
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- Fix the RAPI instances-multi-alloc call
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- assign unique filenames to file-based disks
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- gracefully handle degraded non-diskless instances with 0 disks (issue 697)
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- noded now runs with its specified group, which is the default group,
  defaulting to root (issue 707)
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- make using UUIDs to identify nodes in gnt-node consistently possible
  (issue 703)
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Version 2.9.3
-------------

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*(Released Mon, 27 Jan 2014)*
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- Ensure that all the hypervisors exist in the config file (Issue 640)
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- Correctly recognise the role as master node (Issue 687)
- configure: allow detection of Sphinx 1.2+ (Issue 502)
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- gnt-instance now honors the KVM path correctly (Issue 691)
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Inherited from the 2.8 branch:

- Change the list separator for the usb_devices parameter from comma to space.
  Commas could not work because they are already the hypervisor option
  separator (Issue 649)
- Add support for blktap2 file-driver (Issue 638)
- Add network tag definitions to the haskell codebase (Issue 641)
- Fix RAPI network tag handling
- Add the network tags to the tags searched by gnt-cluster search-tags
- Fix caching bug preventing jobs from being cancelled
- Start-master/stop-master was always failing if ConfD was disabled. (Issue 685)

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Version 2.9.2
-------------

*(Released Fri, 13 Dec 2013)*

- use custom KVM path if set for version checking
- SingleNotifyPipeCondition: don't share pollers

Inherited from the 2.8 branch:

- Fixed Luxi daemon socket permissions after master-failover
- Improve IP version detection code directly checking for colons rather than
  passing the family from the cluster object
- Fix NODE/NODE_RES locking in LUInstanceCreate by not acquiring NODE_RES locks
  opportunistically anymore (Issue 622)
- Allow link local IPv6 gateways (Issue 624)
- Fix error printing (Issue 616)
- Fix a bug in InstanceSetParams concerning names: in case no name is passed in
  disk modifications, keep the old one. If name=none then set disk name to
  None.
- Update build_chroot script to work with the latest hackage packages
- Add a packet number limit to "fping" in master-ip-setup (Issue 630)
- Fix evacuation out of drained node (Issue 615)
- Add default file_driver if missing (Issue 571)
- Fix job error message after unclean master shutdown (Issue 618)
- Lock group(s) when creating instances (Issue 621)
- SetDiskID() before accepting an instance (Issue 633)
- Allow the ext template disks to receive arbitrary parameters, both at creation
  time and while being modified
- Xen handle domain shutdown (future proofing cherry-pick)
- Refactor reading live data in htools (future proofing cherry-pick)

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Version 2.9.1
-------------

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*(Released Wed, 13 Nov 2013)*
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- fix bug, that kept nodes offline when readding
- when verifying DRBD versions, ignore unavailable nodes
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- fix bug that made the console unavailable on kvm in split-user
  setup (issue 608)
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- DRBD: ensure peers are UpToDate for dual-primary (inherited 2.8.2)


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Version 2.9.0
-------------
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*(Released Tue, 5 Nov 2013)*
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Incompatible/important changes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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- hroller now also plans for capacity to move non-redundant instances off
  any node to be rebooted; the old behavior of completely ignoring any
  non-redundant instances can be restored by adding the --ignore-non-redundant
  option.
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- The cluster option '--no-lvm-storage' was removed in favor of the new option
  '--enabled-disk-templates'.
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- On instance creation, disk templates no longer need to be specified
  with '-t'. The default disk template will be taken from the list of
  enabled disk templates.
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- The monitoring daemon is now running as root, in order to be able to collect
  information only available to root (such as the state of Xen instances).
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- The ConfD client is now IPv6 compatible.
- File and shared file storage is no longer dis/enabled at configure time,
  but using the option '--enabled-disk-templates' at cluster initialization and
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  modification.
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- The default directories for file and shared file storage are not anymore
  specified at configure time, but taken from the cluster's configuration.
  They can be set at cluster initialization and modification with
  '--file-storage-dir' and '--shared-file-storage-dir'.
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- Cluster verification now includes stricter checks regarding the
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  default file and shared file storage directories. It now checks that
  the directories are explicitely allowed in the 'file-storage-paths' file and
  that the directories exist on all nodes.
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- The list of allowed disk templates in the instance policy and the list
  of cluster-wide enabled disk templates is now checked for consistency
  on cluster or group modification. On cluster initialization, the ipolicy
  disk templates are ensured to be a subset of the cluster-wide enabled
  disk templates.
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New features
~~~~~~~~~~~~

- DRBD 8.4 support. Depending on the installed DRBD version, Ganeti now uses
  the correct command syntax. It is possible to use different DRBD versions
  on different nodes as long as they are compatible to each other. This
  enables rolling upgrades of DRBD with no downtime. As permanent operation
  of different DRBD versions within a node group is discouraged,
  ``gnt-cluster verify`` will emit a warning if it detects such a situation.
- New "inst-status-xen" data collector for the monitoring daemon, providing
  information about the state of the xen instances on the nodes.
- New "lv" data collector for the monitoring daemon, collecting data about the
  logical volumes on the nodes, and pairing them with the name of the instances
  they belong to.
- New "diskstats" data collector, collecting the data from /proc/diskstats and
  presenting them over the monitoring daemon interface.
- The ConfD client is now IPv6 compatible.

New dependencies
~~~~~~~~~~~~~~~~
The following new dependencies have been added.

Python

- ``python-mock`` (http://www.voidspace.org.uk/python/mock/) is now a required
  for the unit tests (and only used for testing).

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Haskell
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- ``hslogger`` (http://software.complete.org/hslogger) is now always
  required, even if confd is not enabled.

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Since 2.9.0 rc3
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~~~~~~~~~~~~~~~

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- Correctly start/stop luxid during gnt-cluster master-failover (inherited
  from stable-2.8)
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- Improved error messsages (inherited from stable-2.8)
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Version 2.9.0 rc3
-----------------

*(Released Tue, 15 Oct 2013)*

The third release candidate in the 2.9 series. Since 2.9.0 rc2:

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- in implicit configuration upgrade, match ipolicy with enabled disk templates
- improved harep documentation (inherited from stable-2.8)


Version 2.9.0 rc2
-----------------

*(Released Wed, 9 Oct 2013)*

The second release candidate in the 2.9 series. Since 2.9.0 rc1:

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- Fix bug in cfgupgrade that led to failure when upgrading from 2.8 with
  at least one DRBD instance.
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- Fix bug in cfgupgrade that led to an invalid 2.8 configuration after
  downgrading.
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Version 2.9.0 rc1
-----------------

*(Released Tue, 1 Oct 2013)*

The first release candidate in the 2.9 series. Since 2.9.0 beta1:
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- various bug fixes
- update of the documentation, in particular installation instructions
- merging of LD_* constants into DT_* constants
- python style changes to be compatible with newer versions of pylint


Version 2.9.0 beta1
-------------------

*(Released Thu, 29 Aug 2013)*

This was the first beta release of the 2.9 series. All important changes
are listed in the latest 2.9 entry.
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Version 2.8.4
-------------

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*(Released Thu, 23 Jan 2014)*
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- Change the list separator for the usb_devices parameter from comma to space.
  Commas could not work because they are already the hypervisor option
  separator (Issue 649)
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- Add support for blktap2 file-driver (Issue 638)
- Add network tag definitions to the haskell codebase (Issue 641)
- Fix RAPI network tag handling
- Add the network tags to the tags searched by gnt-cluster search-tags
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- Fix caching bug preventing jobs from being cancelled
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- Start-master/stop-master was always failing if ConfD was disabled. (Issue 685)
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Version 2.8.3
-------------

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- Fixed Luxi daemon socket permissions after master-failover
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- Improve IP version detection code directly checking for colons rather than
  passing the family from the cluster object
- Fix NODE/NODE_RES locking in LUInstanceCreate by not acquiring NODE_RES locks
  opportunistically anymore (Issue 622)
- Allow link local IPv6 gateways (Issue 624)
- Fix error printing (Issue 616)
- Fix a bug in InstanceSetParams concerning names: in case no name is passed in
  disk modifications, keep the old one. If name=none then set disk name to
  None.
- Update build_chroot script to work with the latest hackage packages
- Add a packet number limit to "fping" in master-ip-setup (Issue 630)
- Fix evacuation out of drained node (Issue 615)
- Add default file_driver if missing (Issue 571)
- Fix job error message after unclean master shutdown (Issue 618)
- Lock group(s) when creating instances (Issue 621)
- SetDiskID() before accepting an instance (Issue 633)
- Allow the ext template disks to receive arbitrary parameters, both at creation
  time and while being modified
- Xen handle domain shutdown (future proofing cherry-pick)
- Refactor reading live data in htools (future proofing cherry-pick)
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Version 2.8.2
-------------

*(Released Thu, 07 Nov 2013)*

- DRBD: ensure peers are UpToDate for dual-primary
- Improve error message for replace-disks
- More dependency checks at configure time
- Placate warnings on ganeti.outils_unittest.py


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Version 2.8.1
-------------

*(Released Thu, 17 Oct 2013)*

- Correctly start/stop luxid during gnt-cluster master-failover
- Don't attempt IPv6 ssh in case of IPv4 cluster (Issue 595)
- Fix path for the job queue serial file
- Improved harep man page
- Minor documentation improvements


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Version 2.8.0
-------------
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*(Released Mon, 30 Sep 2013)*
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Incompatible/important changes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

- Instance policy can contain multiple instance specs, as described in
  the “Constrained instance sizes” section of :doc:`Partitioned Ganeti
  <design-partitioned>`. As a consequence, it's not possible to partially change
  or override instance specs. Bounding specs (min and max) can be specified as a
  whole using the new option ``--ipolicy-bounds-specs``, while standard
  specs use the new option ``--ipolicy-std-specs``.
- The output of the info command of gnt-cluster, gnt-group, gnt-node,
  gnt-instance is a valid YAML object.
- hail now honors network restrictions when allocating nodes. This led to an
  update of the IAllocator protocol. See the IAllocator documentation for
  details.
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- confd now only answers static configuration request over the network. luxid
  was extracted, listens on the local LUXI socket and responds to live queries.
  This allows finer grained permissions if using separate users.
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New features
~~~~~~~~~~~~

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- The :doc:`Remote API <rapi>` daemon now supports a command line flag
  to always require authentication, ``--require-authentication``. It can
  be specified in ``$sysconfdir/default/ganeti``.
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- A new cluster attribute 'enabled_disk_templates' is introduced. It will
  be used to manage the disk templates to be used by instances in the cluster.
  Initially, it will be set to a list that includes plain, drbd, if they were
  enabled by specifying a volume group name, and file and sharedfile, if those
  were enabled at configure time. Additionally, it will include all disk
  templates that are currently used by instances. The order of disk templates
  will be based on Ganeti's history of supporting them. In the future, the
  first entry of the list will be used as a default disk template on instance
  creation.
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- ``cfgupgrade`` now supports a ``--downgrade`` option to bring the
  configuration back to the previous stable version.
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- Disk templates in group ipolicy can be restored to the default value.
- Initial support for diskless instances and virtual clusters in QA.
- More QA and unit tests for instance policies.
- Every opcode now contains a reason trail (visible through ``gnt-job info``)
  describing why the opcode itself was executed.
- The monitoring daemon is now available. It allows users to query the cluster
  for obtaining information about the status of the system. The daemon is only
  responsible for providing the information over the network: the actual data
  gathering is performed by data collectors (currently, only the DRBD status
  collector is available).
- In order to help developers work on Ganeti, a new script
  (``devel/build_chroot``) is provided, for building a chroot that contains all
  the required development libraries and tools for compiling Ganeti on a Debian
  Squeeze system.
- A new tool, ``harep``, for performing self-repair and recreation of instances
  in Ganeti has been added.
- Split queries are enabled for tags, network, exports, cluster info, groups,
  jobs, nodes.
- New command ``show-ispecs-cmd`` for ``gnt-cluster`` and ``gnt-group``.
  It prints the command line to set the current policies, to ease
  changing them.
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- Add the ``vnet_hdr`` HV parameter for KVM, to control whether the tap
  devices for KVM virtio-net interfaces will get created with VNET_HDR
  (IFF_VNET_HDR) support. If set to false, it disables offloading on the
  virtio-net interfaces, which prevents host kernel tainting and log
  flooding, when dealing with broken or malicious virtio-net drivers.
  It's set to true by default.
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- Instance failover now supports a ``--cleanup`` parameter for fixing previous
  failures.
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- Support 'viridian' parameter in Xen HVM
- Support DSA SSH keys in bootstrap
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- To simplify the work of packaging frameworks that want to add the needed users
  and groups in a split-user setup themselves, at build time three files in
  ``doc/users`` will be generated. The ``groups`` files contains, one per line,
  the groups to be generated, the ``users`` file contains, one per line, the
  users to be generated, optionally followed by their primary group, where
  important. The ``groupmemberships`` file contains, one per line, additional
  user-group membership relations that need to be established. The syntax of
  these files will remain stable in all future versions.

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New dependencies
~~~~~~~~~~~~~~~~
The following new dependencies have been added:

For Haskell:
- The ``curl`` library is not optional anymore for compiling the Haskell code.
- ``snap-server`` library (if monitoring is enabled).

For Python:
- The minimum Python version needed to run Ganeti is now 2.6.
- ``yaml`` library (only for running the QA).
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~~~~~~~~~~~~~~~
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- Perform proper cleanup on termination of Haskell daemons
- Fix corner-case in handling of remaining retry time


Version 2.8.0 rc3
-----------------

*(Released Tue, 17 Sep 2013)*
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- To simplify the work of packaging frameworks that want to add the needed users
  and groups in a split-user setup themselves, at build time three files in
  ``doc/users`` will be generated. The ``groups`` files contains, one per line,
  the groups to be generated, the ``users`` file contains, one per line, the
  users to be generated, optionally followed by their primary group, where
  important. The ``groupmemberships`` file contains, one per line, additional
  user-group membership relations that need to be established. The syntax of
  these files will remain stable in all future versions.
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- Add a default to file-driver when unspecified over RAPI (Issue 571)
- Mark the DSA host pubkey as optional, and remove it during config downgrade
  (Issue 560)
- Some documentation fixes
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Version 2.8.0 rc2
-----------------

*(Released Tue, 27 Aug 2013)*

The second release candidate of the 2.8 series. Since 2.8.0. rc1:

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- Support 'viridian' parameter in Xen HVM (Issue 233)
- Include VCS version in ``gnt-cluster version``
- Support DSA SSH keys in bootstrap (Issue 338)
- Fix batch creation of instances
- Use FQDN to check master node status (Issue 551)
- Make the DRBD collector more failure-resilient


Version 2.8.0 rc1
-----------------

*(Released Fri, 2 Aug 2013)*

The first release candidate of the 2.8 series. Since 2.8.0 beta1:
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- Fix upgrading/downgrading from 2.7
- Increase maximum RAPI message size
- Documentation updates
- Split ``confd`` between ``luxid`` and ``confd``
- Merge 2.7 series up to the 2.7.1 release
- Allow the ``modify_etc_hosts`` option to be changed
- Add better debugging for ``luxid`` queries
- Expose bulk parameter for GetJobs in RAPI client
- Expose missing ``network`` fields in RAPI
- Add some ``cluster verify`` tests
- Some unittest fixes
- Fix a malfunction in ``hspace``'s tiered allocation
- Fix query compatibility between haskell and python implementations
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- Add the ``vnet_hdr`` HV parameter for KVM
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- Add ``--cleanup`` to instance failover
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- Change the connected groups format in ``gnt-network info`` output; it
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  was previously displayed as a raw list by mistake. (Merged from 2.7)
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Version 2.8.0 beta1
-------------------

*(Released Mon, 24 Jun 2013)*

This was the first beta release of the 2.8 series. All important changes
are listed in the latest 2.8 entry.

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Version 2.7.2
-------------

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*(Released Thu, 26 Sep 2013)*
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- Change the connected groups format in ``gnt-network info`` output; it
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  was previously displayed as a raw list by mistake
- Check disk template in right dict when copying
- Support multi-instance allocs without iallocator
- Fix some errors in the documentation
- Fix formatting of tuple in an error message
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Version 2.7.1
-------------

*(Released Thu, 25 Jul 2013)*

- Add logrotate functionality in daemon-util
- Add logrotate example file
- Add missing fields to network queries over rapi
- Fix network object timestamps
- Add support for querying network timestamps
- Fix a typo in the example crontab
- Fix a documentation typo


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Version 2.7.0
-------------
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*(Released Thu, 04 Jul 2013)*
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Incompatible/important changes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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- Instance policies for disk size were documented to be on a per-disk
  basis, but hail applied them to the sum of all disks. This has been
  fixed.
- ``hbal`` will now exit with status 0 if, during job execution over
  LUXI, early exit has been requested and all jobs are successful;
  before, exit status 1 was used, which cannot be differentiated from
  "job error" case
- Compatibility with newer versions of rbd has been fixed
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- ``gnt-instance batch-create`` has been changed to use the bulk create
  opcode from Ganeti. This lead to incompatible changes in the format of
  the JSON file. It's now not a custom dict anymore but a dict
  compatible with the ``OpInstanceCreate`` opcode.
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- Parent directories for file storage need to be listed in
  ``$sysconfdir/ganeti/file-storage-paths`` now. ``cfgupgrade`` will
  write the file automatically based on old configuration values, but it
  can not distribute it across all nodes and the file contents should be
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  verified. Use ``gnt-cluster copyfile
  $sysconfdir/ganeti/file-storage-paths`` once the cluster has been
  upgraded. The reason for requiring this list of paths now is that
  before it would have been possible to inject new paths via RPC,
  allowing files to be created in arbitrary locations. The RPC protocol
  is protected using SSL/X.509 certificates, but as a design principle
  Ganeti does not permit arbitrary paths to be passed.
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- The parsing of the variants file for OSes (see
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  :manpage:`ganeti-os-interface(7)`) has been slightly changed: now empty
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  lines and comment lines (starting with ``#``) are ignored for better
  readability.
- The ``setup-ssh`` tool added in Ganeti 2.2 has been replaced and is no
  longer available. ``gnt-node add`` now invokes a new tool on the
  destination node, named ``prepare-node-join``, to configure the SSH
  daemon. Paramiko is no longer necessary to configure nodes' SSH
  daemons via ``gnt-node add``.
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- Draining (``gnt-cluster queue drain``) and un-draining the job queue
  (``gnt-cluster queue undrain``) now affects all nodes in a cluster and
  the flag is not reset after a master failover.
- Python 2.4 has *not* been tested with this release. Using 2.6 or above
  is recommended. 2.6 will be mandatory from the 2.8 series.


New features
~~~~~~~~~~~~

- New network management functionality to support automatic allocation
  of IP addresses and managing of network parameters. See
  :manpage:`gnt-network(8)` for more details.
- New external storage backend, to allow managing arbitrary storage
  systems external to the cluster. See
  :manpage:`ganeti-extstorage-interface(7)`.
- New ``exclusive-storage`` node parameter added, restricted to
  nodegroup level. When it's set to true, physical disks are assigned in
  an exclusive fashion to instances, as documented in :doc:`Partitioned
  Ganeti <design-partitioned>`.  Currently, only instances using the
  ``plain`` disk template are supported.
- The KVM hypervisor has been updated with many new hypervisor
  parameters, including a generic one for passing arbitrary command line
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  values. See a complete list in :manpage:`gnt-instance(8)`. It is now
  compatible up to qemu 1.4.
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- A new tool, called ``mon-collector``, is the stand-alone executor of
  the data collectors for a monitoring system. As of this version, it
  just includes the DRBD data collector, that can be executed by calling
  ``mon-collector`` using the ``drbd`` parameter. See
  :manpage:`mon-collector(7)`.
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- A new user option, :pyeval:`rapi.RAPI_ACCESS_READ`, has been added
  for RAPI users. It allows granting permissions to query for
  information to a specific user without giving
  :pyeval:`rapi.RAPI_ACCESS_WRITE` permissions.
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- A new tool named ``node-cleanup`` has been added. It cleans remains of
  a cluster from a machine by stopping all daemons, removing
  certificates and ssconf files. Unless the ``--no-backup`` option is
  given, copies of the certificates are made.
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- Instance creations now support the use of opportunistic locking,
  potentially speeding up the (parallel) creation of multiple instances.
  This feature is currently only available via the :doc:`RAPI
  <rapi>` interface and when an instance allocator is used. If the
  ``opportunistic_locking`` parameter is set the opcode will try to
  acquire as many locks as possible, but will not wait for any locks
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  held by other opcodes. If not enough resources can be found to
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  allocate the instance, the temporary error code
  :pyeval:`errors.ECODE_TEMP_NORES` is returned. The operation can be
  retried thereafter, with or without opportunistic locking.
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- New experimental linux-ha resource scripts.
- Restricted-commands support: ganeti can now be asked (via command line
  or rapi) to perform commands on a node. These are passed via ganeti
  RPC rather than ssh. This functionality is restricted to commands
  specified on the ``$sysconfdir/ganeti/restricted-commands`` for security
  reasons. The file is not copied automatically.


Misc changes
~~~~~~~~~~~~

- Diskless instances are now externally mirrored (Issue 237). This for
  now has only been tested in conjunction with explicit target nodes for
  migration/failover.
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- Queries not needing locks or RPC access to the node can now be
  performed by the confd daemon, making them independent from jobs, and
  thus faster to execute. This is selectable at configure time.
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- The functionality for allocating multiple instances at once has been
  overhauled and is now also available through :doc:`RAPI <rapi>`.

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There are no significant changes from version 2.7.0~rc3.


Version 2.7.0 rc3
-----------------

*(Released Tue, 25 Jun 2013)*
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- Fix permissions on the confd query socket (Issue 477)
- Fix permissions on the job archive dir (Issue 498)
- Fix handling of an internal exception in replace-disks (Issue 472)
- Fix gnt-node info handling of shortened names (Issue 497)
- Fix gnt-instance grow-disk when wiping is enabled
- Documentation improvements, and support for newer pandoc
- Fix hspace honoring ipolicy for disks (Issue 484)
- Improve handling of the ``kvm_extra`` HV parameter


Version 2.7.0 rc2
-----------------

*(Released Fri, 24 May 2013)*
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- ``devel/upload`` now works when ``/var/run`` on the target nodes is a
  symlink.
- Disks added through ``gnt-instance modify`` or created through
  ``gnt-instance recreate-disks`` are wiped, if the
  ``prealloc_wipe_disks`` flag is set.
- If wiping newly created disks fails, the disks are removed. Also,
  partial failures in creating disks through ``gnt-instance modify``
  triggers a cleanup of the partially-created disks.
- Removing the master IP address doesn't fail if the address has been
  already removed.
- Fix ownership of the OS log dir
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- Workaround missing SO_PEERCRED constant (Issue 191)
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Version 2.7.0 rc1
-----------------

*(Released Fri, 3 May 2013)*
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This was the first release candidate of the 2.7 series. Since beta3:
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- Fix kvm compatibility with qemu 1.4 (Issue 389)
- Documentation updates (admin guide, upgrade notes, install
  instructions) (Issue 372)
- Fix gnt-group list nodes and instances count (Issue 436)
- Fix compilation without non-mandatory libraries (Issue 441)
- Fix xen-hvm hypervisor forcing nics to type 'ioemu' (Issue 247)
- Make confd logging more verbose at INFO level (Issue 435)
- Improve "networks" documentation in :manpage:`gnt-instance(8)`
- Fix failure path for instance storage type conversion (Issue 229)
- Update htools text backend documentation
- Improve the renew-crypto section of :manpage:`gnt-cluster(8)`
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- Disable inter-cluster instance move for file-based instances, because
  it is dependant on instance export, which is not supported for
  file-based instances. (Issue 414)
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- Fix gnt-job crashes on non-ascii characters (Issue 427)
- Fix volume group checks on non-vm-capable nodes (Issue 432)
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Version 2.7.0 beta3
-------------------

*(Released Mon, 22 Apr 2013)*

This was the third beta release of the 2.7 series. Since beta2:
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