path: root/ChangeLog

2019-12-01 S. Thiell <sthiell@stanford.edu>

	* Version 1.8.3 released. The main changes are listed below.

	* NodeUtils: use yaml.safe_load() instead of default loader (#417)

	* Tree-mode doesn't work with multi-hop gateways (#419)

	* Silent error on Python version mismatch with gateway (#388)

	* clush: support --worker/-R when topology.conf is present (#386)

2019-08-12 S. Thiell <sthiell@stanford.edu>

	* Version 1.8.2 released. The main changes are listed below.

	* CLI/Display: use utf-8 (or non-ascii) encoding (#400)

	* Defaults: add NodeSet's default folding axis (#401)

	* EngineTimer: fix misuse of epsilon when firing timer (#399)

	* xCAT group bindings: performance update (#398)

	* Slurm group bindings: fix issue where job ids were used instead of user
	names (#405)

	* Doc: disable smartquotes (#402) and fix typo, %r is not for rank (#409)

	* Packaging: add support for RHEL8 (#413)

2018-10-30 S. Thiell <sthiell@stanford.edu>

	* Version 1.8.1 released. The main changes are listed below.

	* Tree: support offline gateways (#260)

	* CLI: added the following command line options (#336):
		--conf to specify alternative clush.conf (clush only)
		--groupsconf to specify alternative groups.conf (all CLIs)

	* NodeSet: speed-up nodeset parsing (#370)

	* EventHandler: reinstate ev_error and ev_timeout as deprecated (#377)

	* nodeset/cluset CLI: allow litteral new line in -S, so both -S "\n"
	and -S $'\n' will work

	* nodeset/cluset CLI: handle multiline shell arguments in options (#394)

2017-10-23 S. Thiell <sthiell@stanford.edu>

	* Version 1.8 released.

2017-10-18 S. Thiell <sthiell@stanford.edu>

	* 1.8 RC1 (1.7.91) release.

2017-10-14 S. Thiell <sthiell@stanford.edu>

	* NodeSet.py: add node wildcard support (ticket #349).

2017-10-02 S. Thiell <sthiell@stanford.edu>

	* 1.8 beta2 (1.7.82) release.

	* CLI: make color output legible on dark backgrounds (#334)
	* Event API 2.0: new ev_* method signatures (#232)
	* CLI/Clush.py: initialize logging earlier (#348)
	* NodeUtils: ignore YAML group files with permission error (#348)
	* CLI/Clush.py: fix mishandled broken pipe in Python 3
	* CLI/Nodeset: display warning on misplaced set operation (#318)

2017-09-01 S. Thiell <sthiell@stanford.edu>

	* 1.8 beta1 (1.7.81) release.

2017-08-09 S. Thiell <sthiell@stanford.edu>

	* Added Python 3 support (#337).

2017-07-27 S. Thiell <sthiell@stanford.edu>

	* NodeUtils.py: fix external reverse node group upcall caching issue.

2017-06-27 S. Thiell <sthiell@stanford.edu>

	* CLI/Clush.py: add -n as an alias of --nostdin (#333).

2017-04-29 S. Thiell <sthiell@stanford.edu>

	* NodeSet.py: allow fully numeric node names (ticket #338).

2017-02-21 S. Thiell <sthiell@stanford.edu>

	* Worker/Tree.py: fix defect in file copying code when destination target
	directory is provided (ticket #332).

2016-12-20 S. Thiell <sthiell@stanford.edu>

	* Version 1.7.3 released.

	* conf/groups.conf.d: add an external group source example file for xCAT
	static groups (xcat.conf.example).

2016-12-18 S. Thiell <sthiell@stanford.edu>

	* Clush.py: fix sorting issue with clush -L (ticket #326).

2016-11-06 S. Thiell <sthiell@stanford.edu>

	* cluset: add cluset command with doc to avoid a conflict with xCAT's
	nodeset command (ticket #300).

2016-10-12 All contributors

	* Change license from "CeCILL-C V1" to "LGPL v2.1 or later".

2016-10-04 S. Thiell <sthiell@stanford.edu>

	* setup.py: remove scripts/*; use console_scripts instead.

2016-10-02 S. Thiell <sthiell@stanford.edu>

	* Tree.py: in copy mode, do not send tar data to local targets, but only
	remote ones; this does fix broken pipe errors (ticket #319).

	* Engine.py: implement basic per worker fanout (private), allowing the use
	of fanout=1 in tree mode (ticket #322).

2016-06-18 S. Thiell <sthiell@stanford.edu>

	* Version 1.7.2 released.

2016-06-07 D. Martinet  <dominique.martinet@cea.fr>

	* Clush/Nodeset: add --pick N option (ticket #311).

2016-05-22 S. Thiell <sthiell@stanford.edu>

	* Tree.py: fix the tracking of gateway active targets (ticket #308).
	* EngineClient.py: handle broken pipe on write() (ticket #196).

2016-04-24 S. Thiell <sthiell@stanford.edu>

	* NodeSet.py: allow empty string as valid argument for empty NodeSet
	objects (ticket #294).

2016-02-28 S. Thiell <sthiell@stanford.edu>

	* Version 1.7.1 released.

2016-02-27 S. Thiell <sthiell@stanford.edu>

	* Worker/Tree.py: implement tree mode reverse copy using tar commands to
	fix clush --rcopy (ticket #290).

	* Communication.py: remove 76-char base64 encoding fixed length
	restriction for tree XML payload communication. The default max length is
	now 64K, which gives good results. The environment variable
	'CLUSTERSHELL_GW_B64_LINE_LENGTH' is propagated to gateways and may be
	used to override this value.

2016-02-12 S. Thiell <sthiell@stanford.edu>

	* RangeSet.py and NodeSet.py: fix bad 0-padding handling by RangeSetND or
	NodeSet objects in nD (ticket #286).

2016-02-09 S. Thiell <sthiell@stanford.edu>

	* NodeSet.py: fix parser issue when brackets were used with nodeset
	starting with a digit (ticket #284).

2015-11-30 S. Thiell <sthiell@stanford.edu>

	* CLI/Nodeset.py: fix --output-format / -O when folding (-f) by applying
	the provided format to each node (ticket #277).

2015-11-10 S. Thiell <sthiell@stanford.edu>

	* Version 1.7 released.

2015-11-01 S. Thiell <sthiell@stanford.edu>

	* Clush.py: added -P/--progress to force display of the live progress
	indicator and display global write bandwidth when writing standard input.

2015-10-25 S. Thiell <sthiell@stanford.edu>

	* Clush.py: added --option/-O clush.conf settings override (pull
	request #248).

2015-10-18 S. Thiell <sthiell@stanford.edu>

	* Clush.py: added --hostfile command line option to specify a file
	containing single hosts, node sets or node groups (ticket #235).

2015-10-16 S. Thiell <sthiell@stanford.edu>

	* NodeSet.py: enhancing parser to recognize nodesets with brackets having
	leading/trailing digits like in "prod-00[01-99]" (ticket #228).

2015-08-29 S. Thiell <sthiell@stanford.edu>

	* CLI/Nodeset.py: added --axis option to choose nD fold axis (ticket
	#269).
	* NodeSet.py: added fold_axis public member to NodeSetBase along with
	expand algorithm when casting to string to choose nD fold axis (ticket
	#269).

2015-08-28 S. Thiell <sthiell@stanford.edu>

	* CLI/Config.py: better per-user clush.conf support. clush now also checks
	for $XDG_CONFIG_HOME/clustershell/clush.conf and
	$HOME/.local/etc/clustershell/clush.conf (ticket #111).

2015-08-27 S. Thiell <sthiell@stanford.edu>

	* CLI/Nodeset.py: add --list-all / -L to list groups from all group
	sources (ticket #266). If repeated, it has the same behavior than -l.

	* NodeUtils.py: add support for built-in groups definition files based on
	YAML. Added autodir configuration option in groups.conf to declare a
	directory where .yaml files are automatically loaded. Example available in
	groups.d/cluster.yaml.example. Added support for groups.conf section with
	multiple source names separated by comma. This is also the case for
	groups.conf.d/*.conf extensions. Also added new upcall command $SOURCE
	variable that is replaced by calling source name before execution.
	Finally, /etc/clustershell/groups is now deprecated and replaced by
	/etc/clustershell/groups.d/local.cfg for new installation (ticket #258).

2015-07-07 S. Thiell <sthiell@stanford.edu>

	* CLI/Nodeset.py: add --autostep=auto and --autostep=x% option (#161).

	* NodeSet: add autostep property to allow changing the way every RangeSet of
	a NodeSet object is displayed (eg. node[2-8/2] instead of node[2,4,6,8]).
	Autostep value is the min number of indexes that are found at equal distance
	of each other inside a range before NodeSet starts to use this syntax.

2015-05-18 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.6.92 released.

2015-04-10 S. Thiell <stephane.thiell@cea.fr>

	* Tree: implement task.copy() in tree mode using temporary tar file.

2015-04-01 S. Thiell <stephane.thiell@cea.fr>

	* Tree: allow local command execution on gateways by adding remote=False to
	task.shell()/run().  In practice with this patch, we can now easily
	execute local commands on (remote) gateways using node argument like
	`ipmitool -H %h` to spread the load between gateways.

2015-03-24 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py: disallow opening bracket after digit (ticket #228).

2015-03-23 S. Thiell <stephane.thiell@cea.fr>

	* Clush.py: Warn user of possible use of shell globbing, especially when
	using brackets and bash without GLOBIGNORE set (ticket #225).
	* Clush.py: Fix --diff against null content (ticket #214).

2015-03-19 S. Thiell <stephane.thiell@cea.fr>

	* Task.py: Make max_retcode() return None on no-op. Until now, max_retcode()
	returned 0 by default, so even when no command was able to finish (for
	example, due to reached timeout). This behavior did not allow users to
	distinguish between successful commands and such no-op.

2015-03-11 S. Thiell <stephane.thiell@cea.fr>

	* Worker.py: Introduce StreamWorker as a generic worker class to manage a
	set of streams (using one EngineClient with multiple I/O streams
	internally). It's a concrete class that is now used in Gateway.py to
	manage I/O from the parent host in tree propagation mode. Also changed
	WorkerSimple (and thus WorkerPopen) to inherit from StreamWorker.

2014-05-20 S. Thiell <stephane.thiell@cea.fr>

	* EngineClient.py: Code improvement to support multiple customizable I/O
	streams per EngineClient in different mode, each being named and having
	their own read/write buffers and attributes.

2014-04-30 A. Degremont <aurelien.degremont@cea.fr>

	* Clush.py: Add a 'worker' option to switch default worker (ticket #221).

2014-04-23 S. Thiell <stephane.thiell@cea.fr>

	* EPoll.py: Close epoll control file descriptor when engine is released.

2014-01-26 A. Degremont <aurelien.degremont@cea.fr>

	* NodeUtils.py: Add group source caching expiration (ticket #98).

2014-01-16 S. Thiell <stephane.thiell@cea.fr>

	* RangeSet.py: Multidimensional RangeSet support (new RangeSetND class).
	Created RangeSetND class to manage a matrix of RangeSet objects. Folding
	of such objects is quite complex and time consuming. A special
	optimization is provided when only one dimension is varying. Patch by
	aurelien.degremont@cea.fr and stephane.thiell@cea.fr.

	* NodeSet.py: Multidimensional nodeset support.  Added support of
	RangeSetND to NodeSet. Optimized NodeSet so that 1D NodeSet objects are
	still using RangeSet (ticket #92). Also benefiting from RangeSetND
	optimization when only one dimension is varying. Patch by
	aurelien.degremont@cea.fr and stephane.thiell@cea.fr.

2014-01-14 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py: fix and clean fromall()/@* magic and add resolver option to
	grouplist()'s NodeSet module function.

2014-01-14 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py: Define module API to access and set group resolver used for
	@-prefixed (eg. '@group') resolution. This is used to circumvent accessing
	and setting NodeSet module's variable 'RESOLVER_STD_GROUP' directly, which
	is not convenient and error prone. The new functions are
	std_group_resolver() and set_std_group_resolver(). Updated User Guide.

	* CLI/Clush.py: ignore IOError on stdin reader thread, but print a warning
	in verbose or debug mode (ticket #201).

2014-01-06 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py: Fix internal implementation of NodeSet.contiguous(), that
	is, as NodeSet is mutable, we should avoid using the same NodeSet instance
	in NodeSet.contiguous() for different NodeSet values.

2013-12-17 S. Thiell <stephane.thiell@cea.fr>

	* Task.py: fix task.iter_buffers() and worker.iter_buffers() to allow
	optional argument match_keys to be an empty list for convenience. It
	should be set to None to disable match_keys check. Also check that
	match_keys is a true key/node sequence and not a string.

2013-11-05 S. Thiell <stephane.thiell@cea.fr>

	* EngineClient.py: Hide unwanted debug messages: when aborting a task,
	cleanup of associated resources may lead to dropped inter-task messages
	through the EnginePort mechanism. We now only display associated warning
	messages when debugging is enabled...

	* Task.py: Fix abort() race condition.

	* CLI/Clush.py: Fix a defect to allow the use of command timeout when
	copying files (with clush -u delay -c ..., ticket #220).

2013-11-04 A. Degremont <aurelien.degremont@cea.fr>

	* Worker/Rsh.py: Add a Rsh worker. It is compatible with rsh clones
	like mrsh/krsh. (ticket #216).
	* Task.py: Add a 'worker' default option for Task object. It is used
	in Task.shell() and Task.copy().

2012-09-13 S. Thiell <stephane.thiell@cea.fr>

	* Engine.py: Allow EngineTimer with immediate fire date, that is, a fire
	delay of 0s. Obviously not fired in time, such a timer will still be armed
	and fired as soon as possible (ticket #200).

2012-08-27 S. Thiell <stephane.thiell@cea.fr>

	* Engine.py: Fix catch-all used in case of KeyboardInterrupt exception
	during runloop, resulting in ghost engine clients in that case and results
	possibly not cleaned properly (ticket #199).

2012-08-01 S. Thiell <stephane.thiell@cea.fr>

	* CLI/Clush.py: Fix clush_exit() side effects thanks to latest task
	termination improvements (tickets #185).

	* Task.py: Avoid termination race condition when using multiple threads
	and calling abort()+join() from another thread (tickets #197).

2012-07-09 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py: "All nodes" extended pattern support with @* (ticket #193).

2012-04-08 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.6 released.

	* doc/guide: Add ClusterShell User and Programming Guide LaTeX source to
	repository.

2012-04-07 S. Thiell <stephane.thiell@cea.fr>

	* doc/examples/check_nodes.py: Add simple example of event-driven script.

2012-03-31 S. Thiell <stephane.thiell@cea.fr>

	* CLI/Nodeset.py: Allow -a and common nodeset operations when using -l to
	list belonging groups (a new 1.6 feature, see ticket #162).

2012-03-29 S. Thiell <stephane.thiell@cea.fr>

	* Worker/Worker.py: added documentation for
	worker.current_[node,msg,errmsg,rc] variables (ticket #160).

	* Task.py: timeout parameters better explained (ticket #157).

2012-03-28 S. Thiell <stephane.thiell@cea.fr>

	* CLI/OptionParser.py: Add --diff option to enable diff display between
	gathered outputs. Enabled in clush and clubak (ticket #176).

	* CLI/Display.py: Add _print_diff() and flush() methods.

	* Task.py: Initialize MsgTree instances in constructor according to
	default values in order to allow no-op calls to buffer getters before
	resume() (ticket #186).

2012-03-26 S. Thiell <stephane.thiell@cea.fr>

	* CLI/Clush.py: Fix clush --[r]copy behavior when no source directory is
	specified (ticket #172).

	* CLI/Clush.py: Fix interactive mode gather/standard toggle error, when
	using special character '=' (ticket #171).

	* CLI/Clubak.py: Add -v/-q verbosity options (ticket #174).

2012-03-24 S. Thiell <stephane.thiell@cea.fr>

	* CLI/Clubak.py: Add --interpret-keys=never,always,auto option to clubak
	to allow a more generic usage of clubak, ie. even in cases where keys are
	not nodeset compliant (ticket #180).

2012-03-21 S. Thiell <stephane.thiell@cea.fr>

	* conf/groups.conf: Fix group cross reference issue (ticket #183), we now
	use sed commands instead of awk ones in this default groups.conf file.

2012-03-18 S. Thiell <stephane.thiell@cea.fr>

	* conf/groups.conf: Fix default source regexp for mawk (ticket #178). 

	* Packaging: Add groups.conf.d directory and sample files.

2012-03-17 S. Thiell <stephane.thiell@cea.fr>

	* CLI/Nodeset.py: Add support for -l[ll] <nodeset(s)> to list belonging
	groups (CLI interface to NodeSet.groups()) (ticket #162).

	* NodeSet: Add groups() public method to list groups nodeset belongs to.

2012-03-15 S. Thiell <stephane.thiell@cea.fr>

	* NodeUtils.py: Add groupsdir option (ticket #179).

2012-03-14 S. Thiell <stephane.thiell@cea.fr>

	* CLI/Nodeset.py: Add --contiguous splitting option (ticket #173).

	* NodeSet.py: Add contiguous() iterator.

	* RangeSet.py: Add contiguous() iterator.

	* RangeSet.py: Allow slice object in fromone() constructor.

2012-02-26 S. Thiell <stephane.thiell@cea.fr>

	* Gateway.py: Improved logging facility, configurable through
	CLUSTERSHELL_GW_LOG_DIR and CLUSTERSHELL_GW_LOG_LEVEL environment
	variables from the root node.

	* Communication.py: Messages are now transfered in xml payload instead of
	'output' attribute for improved handling of multi-lines messages in
	StdOutMessage and StdErrMessage.

2012-02-24 S. Thiell <stephane.thiell@cea.fr>

	* Worker/EngineClient.py: Fix gateway write performance issue, as seen on a
	very large cluster with a no-grooming test case and lots of small messages
	sent, by calling os.write() as soon as possible (might safely fail if not
	ready as we are in non-blocking mode).

	* NodeSet.py: Internal parsing optimization by adding a "should copy
	RangeSet object?" flag to NodeSetBase constructor in order to save useless
	but slightly costly RangeSet.copy() calls.

	* NodeSet.py: Small rangeset parsing optimization on single node string
	parsing code.

2012-02-19 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py: Add NodeSet.nsiter(), a fast iterator on nodes as NodeSet
	objects to avoid object-to-string-to-object conversion in some cases when
	using __iter__() -- like in PropagationTreeRouter.dispatch().

2012-02-15 S. Thiell <stephane.thiell@cea.fr>

	* Clush.py: Add --topology <file> hidden option to enable V2 tree
	propagation technology preview.

2012-02-01 S. Thiell <stephane.thiell@cea.fr>

	* RangeSet.py: Fix RangeSet.__setstate__() for proper object unpickling
	from older RangeSet versions. Add unpickling tests.

2012-01-28 S. Thiell <stephane.thiell@cea.fr>

	* RangeSet.py: Discard AVL-tree based implementation, as we noticed that
	built-in set is much faster. New implementation is based on built-in set,
	and slightly changes padding and __iter__() behaviors. Padding value is
	now accessible and settable at any time via a public variable "padding".
	Auto-detection of padding is still available, but it is used as a
	convenience for printing range sets. Moreover, all set-like operations are
	now only based on integers, ignoring RangeSet's padding value. __iter__()
	has been changed in order to iterate over sorted inner set integers,
	instead of string items. A new method striter() is available to iterate
	over string padding-enabled items. These changes allow us to offer a full
	set-like API for RangeSet (new methods like isdisjoint(), pop(), etc. are
	available according to your Python version). Also, a new constructor that
	take any iterable of integers is available. Finally, this implementation
	should much more faster than all previous ones, especially for large range
	sets (ten thousand and more) with lots of holes.

2012-01-10 S. Thiell <stephane.thiell@cea.fr>

	* RangeSet.py: Move RangeSet class from NodeSet.py to this new module
	dedicated to scalable management of cluster range sets (tens of thousands
	of disjoint ranges). Change internal algorithm used to manage ranges from
	a list to an AVL-tree based on bintrees project's avltree implementation.
	Got rid of expand/fold() methods that don't scale, all sets-like methods
	have been rewritten using AVL-tree.

2012-01-04 S. Thiell <stephane.thiell@cea.fr>

	* Task.py: Change behavior of shell()'s tree=None (auto) parameter: added
	Task default parameter "auto_tree" defaulting to False and checked by
	shell() when tree=None. This means that even with a valid topology
	configuration file, the user has to explicitly enable tree mode for now.
	This is for next 1.6 release and should be changed to True in version 2.0.

2011-11-28 S. Thiell <stephane.thiell@cea.fr>

	* Task.py: Fix 'tree' option of shell(), which can be either True (force
	enable tree mode), False (disable tree mode) and None (automatic).

2011-11-24 S. Thiell <stephane.thiell@cea.fr>

	* CLI/Clush.py: Enable tree mode by default with grooming option.

	* Worker/Tree.py: Integrate WorkerTree within ClusterShell Engine
	framework, it will be used instead of PropagationTree.

	* Engine/Engine.py: Inhibit any engine client changes when client is not
	registered.

	* Topology.py: Change DEFAULT section to Main section in topology.conf.
	Cosmetic changes.

2011-06-09 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.5.1 released.

	* NodeSet.py: Added workaround to allow pickling/unpickling of RangeSet
	objects for Python 2.4 (ticket #156).

2011-06-08 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.5 released (Sedona release).

2011-06-07 S. Thiell <stephane.thiell@cea.fr>

	* MsgTree.py: Improved MsgTree API to lighten updates of keys associated
	to tree elements (ticket #131).

	* CLI/Clubak.py: Updated for new MsgTree API and added a -F/--fast switch
	to enable preloading of whole messages to speed up processing, but with
	an increase of memory consumption (ticket #131).

2011-05-31 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py: Optimized NodeSet.fromlist() method by adding updaten()
	method which is quite O(num_patterns).

2011-05-29 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py: Fixed missing autostep check in _fold() which could lead to
	autostep not being taken into account (ticket #150).

	* Worker/Ssh.py: Fix scp user option in Scp class (ticket #152).

	* Engine/*.py: Internal engine design change: do not retry engine
	eventloop on any EngineClient registration changes, so process more events
	by chunk (should be faster) and add a loop iteration counter to work
	around internally re-used FDs (finalize ticket #153).

2011-05-26 S. Thiell <stephane.thiell@cea.fr>

	* Worker/EngineClient.py: Enable fastsubprocess module, and use file
	descriptors instead of file objects everywhere (ticket #153).

	* Worker/fastsubprocess.py: Faster, relaxed version of Python 2.6
	subprocess.py with non blocking fd support.

2011-05-15 S. Thiell <stephane.thiell@cea.fr>

	* Engine/Engine.py: Improved start_all() fanout algorithm by adding a
	separate pending clients list.

	* Created 1.5 branch.

2011-03-19 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.4.3 released.

	* CLI/Nodeset.py: Make stdin '-' keyword work when used for -i/x/X
	operations (ticket #148).

	* CLI/Clush.py: Fixed issue when using clush -bL (missing argument) due to
	latest 1.4.2 changes. Added tests/ClushScriptTest.py to detect that in
	the future (ticket #147).

2011-02-15 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.4.2 released.

2011-03-12 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py: Fixed issues with objects copying, so got rid of copy module
	and added optimized RangeSet.copy() and NodeSet.copy() methods (ticket
	#146).

2011-03-09 S. Thiell <stephane.thiell@cea.fr>

	* CLI/Clush.py: Added running progress indicator for --[r]copy commands.

2011-03-08 S. Thiell <stephane.thiell@cea.fr>

	* CLI/Clush.py: Improved -v switch (closes ticket #100: print live node
	output plus noderange-grouped output at the end).

	* CLI/Clubak.py: Add -T,--tree message tree mode option (ticket #144).

	* MsgTree.py: Class initialization variant (trace mode) to keep track of
	old keys/nodes for each message (part of #144).

2011-03-06 S. Thiell <stephane.thiell@cea.fr>

	* CLI/Clush.py: Implement clush -L (not -bL) to order output by nodename,
	like clubak -L (ticket #141).

	* CLI/Nodeset.py: Added -I/--slice command option to select node(s) by
	index(es) or RangeSet-style slice (ticket #140).

	* CLI/Nodeset.py: Remove pending limitation when using -[ixX] operations
	with nodesets specified by -a (all) or through stdin.

	* NodeSet.py: Add RangeSet.slices() method.

2011-03-05 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py: Internal changes to use slice type to represent ranges in
	RangeSet. Changed RangeSet.add_range() 'stop' argument semantic, it is now
	conforming to range()'s one.

	* NodeSet.py: Fix issue with in-place operators returning None. Added
	tests.

2011-02-27 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py: Fix issue when using negative index or negative slice
	indices for RangeSet and NodeSet.

2011-02-24 S. Thiell <stephane.thiell@cea.fr>

	* CLI/Nodeset.py: Add -ll and -lll extended options to list corresponding
	group nodes, and also group node count (ticket #143).

2011-02-13 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.4.1 released.

2011-02-08 S. Thiell <stephane.thiell@cea.fr>

	* CLI/Config.py: Add fd_max integer parameter to set the max number of
	open files (soft limit) permitted per clush process. This will fix an
	issue on systems where hard limit is not reasonable.

2011-02-07 S. Thiell <stephane.thiell@cea.fr>

	* CLI/OptionParser.py: Add clush -E <engine> hidden option to enforce a
	specific I/O events engine (should not be needed, but can be useful for
	testing). Improve engine selection error handling.

2011-02-06 S. Thiell <stephane.thiell@cea.fr>

	* Engine/Select.py: New select()-based engine (from H. Doreau, ticket #8).

	* CLI/{Clush,Display}.py: Do not display exit code with clush when -qS is
	specified (ticket #117).

	* CLI/Clush.py: Allow clush to run without argument when stdin is not a
	tty, by disabling ssh pseudo-tty allocation. You can now type `echo uname
	| clush -w <nodes>` (ticket #134).

	* Worker/Ssh.py: Fix issue when more than one ssh options are specified
	with -o or in clush.conf (ticket #138).

2011-02-05 S. Thiell <stephane.thiell@cea.fr>

	* CLI/Clush.py: Fix issue when executing local command with clush -b in
	interactive mode (eg. !uname).

	* Worker/Worker.py: Define new current_node, current_msg, current_errmsg
	and current_rc Worker variables, updated at each event (last_read(),
	last_node() and last_retcode() will be deprecated from version 2.0).

	* Worker/*.py: Performance: removed _invoke() indirections when generating
	events + local variables optimization.

	* Task.py: Performance: replaced _TaskMsgTree metaclass by direct calls to
	MsgTree methods + local variables optimization.

	* Worker/Ssh.py: Local variables optimization.

	* CLI/Clush.py: Do not disable internal messages gathering when using -bL
	for proper display after Ctrl-C interruption (#133).

2011-01-26 S. Thiell <stephane.thiell@cea.fr>

	* tests/config: test config-template directory created.

2011-01-17 S. Thiell <stephane.thiell@cea.fr>

	* Communication.py: New module from 2.0 dev branch (author: H. Doreau).
	* Gateway.py: New module from 2.0 dev branch (author: H. Doreau).
	* Propagation.py: New module from 2.0 dev branch (author: H. Doreau).
	* Topology.py: New module from 2.0 dev branch (author: H. Doreau).

2011-01-15 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.4 released.

	* NodeSet.py: Add docstring for NodeSet string arithmetic (, ! & ^),
	which is also called extended string pattern (trac ticket #127).

2010-12-14 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.4 beta 1 released.

	* CLI/Display.py: In buffer header (for -b/-B without -L), print node
	count in brackets if > 1 and enabled by configuration (trac ticket #130).
	
	* CLI/Config.py: Add boolean node_count param (part of trac ticket #130).

2010-12-08 S. Thiell <stephane.thiell@cea.fr>

	* CLI/Nodeset.py: Support nodeset --split option (trac ticket #91).

	* CLI/OptionParser.py: Add --split option (part of #91).

	* NodeSet.py: Avoid overflow by returning truncated results when there are
	not enough elements in the set for RangeSet.split(n) and NodeSet.split(n).

2010-12-02 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py: Much improved algorithm for RangeSet.add_range().

2010-11-30 S. Thiell <stephane.thiell@cea.fr>

	* Worker/{Popen,Pdsh,Ssh}.py: Tell system to release associated resources
	with the child process on abort.

2010-11-30 S. Thiell <stephane.thiell@cea.fr>

	* Worker/Popen.py: Fix stderr pipe leak (trac ticket #121).
	* Worker/Ssh.py: Fix stderr pipe leak (trac ticket #121).
	* Worker/Pdsh.py: Fix stderr pipe leak (trac ticket #121).

	* tests/TaskRLimitsTest.py: New test.

2010-11-28 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py: Optimized NodeSet.__getitem__() (trac ticket #18).

2010-11-25 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py: Slice-optimized version of RangeSet.__getitem__().

2010-11-03 S. Thiell <stephane.thiell@cea.fr>

	* CLI/Clush.py: Added --rcopy support (trac ticket #55).

	* Task.py: Added rcopy() method (part of trac ticket #55).

	* Worker/Pdsh.py: Support for reverse file copy (part of trac ticket #55).

	* Worker/Ssh.py: Support for reverse file copy (part of trac ticket #55).

2010-11-02 S. Thiell <stephane.thiell@cea.fr>

	* Worker/Ssh.py: Fix missing ev_start trigger when using task.copy() (trac
	ticket #125).

2010-11-01 S. Thiell <stephane.thiell@cea.fr>

	* CLI/OptionParser.py: Make -c/--copy an option that can take several
	source arguments.

	* CLI/Clush.py: Improve signal handling (trac ticket #65).

2010-10-25 S. Thiell <stephane.thiell@cea.fr>

	* CLI/Clush.py: Add launched-in-background checks before enabling user
	interaction (fix trac ticket #114).

2010-10-20 S. Thiell <stephane.thiell@cea.fr>

	* Task.py: Docstring improvements (trac tickets #120, #122).

2010-10-20 A. Degremont <aurelien.degremont@cea.fr>

	* NodeSet.py: Optimize NodeSetBase iteration.

2010-10-17 S. Thiell <stephane.thiell@cea.fr>

	* Engine/Factory.py: Re-enable EPoll engine (closes trac ticket #56).

	* Engine/EPoll.py: Cleanup and minor fix in the way event masks are
	modified.

	* CLI/Clush.py: Changed the way of reading stdin, which is now based on
	blocking reads using a specified thread and thread-safe messaging with
	acknowledgement using a task port (part of trac ticket #56).

2010-10-11 S. Thiell <stephane.thiell@cea.fr>

	* Worker/Worker.py: Add Worker.abort() base method and ensure proper
	implementation in all workers (trac ticket #63).

2010-10-10 S. Thiell <stephane.thiell@cea.fr>

	* Worker/Worker.py: WorkerBadArgumentError exception is now
	deprecated, use ValueError instead. Also added exception message in
	each worker (trac ticket #116).

2010-10-01 A. Degremont <aurelien.degremont@cea.fr>

	* Task.py: Add Task.run() new method (trac ticket #119).

2010-09-28 S. Thiell <stephane.thiell@cea.fr>

	* CLI/OptionParser.py: Do not allow option value starting with '-' in some
	cases.

2010-09-26 S. Thiell <stephane.thiell@cea.fr>

	* CLI: Package created.

2010-09-03 S. Thiell <stephane.thiell@cea.fr>

	* Worker/Ssh.py: Fix issue with clush -l USER by separating underlying ssh
	"-l USER" in two shell arguments (trac ticket #113).

2010-08-31 S. Thiell <stephane.thiell@cea.fr>

	* scripts/clush.py: Live per-line gathering (-bL mode) improvements.

	* Task.py: Fixed Task.timer() when called from another thread - it used to
	return None (trac ticket #112).

2010-08-29 S. Thiell <stephane.thiell@cea.fr>

	* Task.py: Add docstring for timer's autoclose feature (trac ticket #109).

	* Worker/Worker.py: Attribute 'last_errmsg' not properly initialized (trac
	ticket #107).

	* setup.py: Switch to setuptools.

	* clustershell.spec.in: Fix issue on el5 with if condition when defining
	python_sitelib.

2010-08-26 S. Thiell <stephane.thiell@cea.fr>

	* Packaging automation engineering and improved specfile.

	* License files converted to UTF-8.

2010-07-27 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.3 released.

2010-07-21 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.3 RC 2 released.

	* NodeSet.py: Like in some previous version, support None as argument for
	most methods (trac ticket #106).

2010-07-16 S. Thiell <stephane.thiell@cea.fr>

	* scripts/clush.py: Fix uncaught exceptions introduced in 1.3 RC 1 (trac
	ticket #105).

2010-07-12 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.3 RC 1 released.

	* Task.py: Raise proper KeyError exception in Task.key_retcode(key) when
	key is not found in any finished workers (trac ticket #102).

2010-07-06 S. Thiell <stephane.thiell@cea.fr>

	* Task.py: Added documentation for reserved set_default() and set_info()
	keys (trac ticket #101).

	* scripts/clubak.py: Merge latest code display changes made on clush to
	clubak, including "--color={never,always,auto}" (trac ticket #89). Updated
	documentation accordingly.

2010-06-29 H. Doreau <henri.doreau@gmail.com>

	* Worker/Pdsh.py: removed obsolete _read() and _readerr() methods that
	overrode EngineClient methods without raising an EOFException when
	read() reads nothing (trac ticket #97).

2010-06-28 S. Thiell <stephane.thiell@cea.fr>

	* scripts/clush.py: Centralized handling of exceptions raised from Main
	and separate Task thread because some exceptions handled only in Main
	thread were not caught (fix btw trac ticket #93).

2010-06-17 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.3 beta 6 released.

2010-06-16 S. Thiell <stephane.thiell@cea.fr>

	* scripts/clush.py: Check for trailing args when using -c/--copy (trac
	ticket #88).

	* NodeSet.py, NodeUtils.py: Add a way to retrieve all nodes when "all"
	external call is missing but "map" and "list" calls are specified (trac
	ticket #90).

	* Task.py: Add handling of stderr during task.copy().

	* Worker/Ssh.py: Add handling of stderr (when needed) during scp.

	* scripts/clush.py: Fix display issue with clush --copy when some nodes
	are not reachable.

	* Version 1.3 beta 5 released.

2010-06-15 S. Thiell <stephane.thiell@cea.fr>

	* scripts/clush.py: Add --color={never,always,auto} command line option
	and color: {never,always,auto} config option (trac ticket #68), defaulting
	to `never'. Also did some code refactoring/lightening (created a Display
	class). Updated clush and clush.conf man pages.

2010-06-09 S. Thiell <stephane.thiell@cea.fr>

	* scripts/clush.py: Automatically increase open files soft limit (trac
	ticket #61). Handle "Too many open files" exception.

	* Task.py: Add excepthook and default_excepthook methods to handle
	uncaught exception in a Task thread. Make it compliant with sys.excepthook
	also.

2010-06-08 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.3 beta 4 released.

	* doc/extras/vim/syntax/groupsconf.vim: Improved vim syntax file for
	groups.conf (trac ticket #85): now $GROUP and $NODE are keywords.

	* scripts/clush.py: Do not wait the end of all commands when using -bL
	switches when possible (trac ticket #69).

	* MsgTree.py: Added remove(match) method to remove entry from the tree.

	* Task.py: Added flush_buffers() and flush_errors() methods.

	* Worker/Worker.py: Added flush_buffers() and flush_errors() methods.

2010-05-26 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.3 beta 3 released.

	* scripts/clush.py: Fixed issue (-g/-X group not working as expected)
	found in release 1.3 beta2.

2010-05-25 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.3 beta 2 released.

	* scripts/clush.py: Added -G, --groupbase to strip group source prefix
	when using -r.

	* scripts/clubak.py: Added -G, --groupbase to strip group source prefix
	when using -r.

	* scripts/nodeset.py: Changed -N, --noprefix to -G, --groupbase to avoid
	conflict with clush -N.

	* scripts/clush.py: Fixed missing support for group source (-s
	GROUPSOURCE) when using -a or -g GROUP.

	* scripts/nodeset.py: Added --all, -a support (also work is -s
	GROUPSOURCE). Almost-silently removed -a for --autostep, I hope nobody's
	using it. :)

	* Updated man pages of clush, clubak and nodeset to match latest options
	changes (trac #58).

	* scripts/clubak.py: Added regroup support to clubak (trac ticket #78).
	Added -S to specify user settable separator string (trac ticket #62).

2010-05-24 S. Thiell <stephane.thiell@cea.fr>

	* tests/NodeSetGroupTest.py: Some cleanup in tests (use setUp, tearDown)
	and create temporary groups test files.

	* tests/NodeSetRegroupTest.py: Removed (tests moved to
	NodeSetGroupTest.py).

	* scripts/nodeset.py: Add -N option to avoid display of group source
	prefix (trac ticket #79).

	* NodeSet.py: Add noprefix boolean option to regroup() to avoid building
	nodegroups with group source prefixes. Added test.

	* scripts/clush.py: Fix unhandled GroupResolverSourceError exception (part
	of trac ticket #74).

	* scripts/nodeset.py: Renamed -n NAMESPACE option to -s GROUPSOURCE (or
	--groupsource=GROUPSOURCE). Fixed trac ticket #76 so that -f, -e or -c
	take -s into account. Improved error handling (trac ticket #74). Added
	--groupsources command to list configured group sources (trac #77).

2010-05-20 S. Thiell <stephane.thiell@cea.fr>

	* tests/NodeSetRegroupTest.py: added tests for nodeset.regroup().

2010-05-19 S. Thiell <stephane.thiell@cea.fr>

	* doc/extras/vim/ftdetect/clustershell.vim: renamed clush.vim to
	clustershell.vim.

	* doc/extras/vim/syntax/clushconf.vim: renamed clush.vim to clushconf.vim
	and cleaned up old external groups keywords.

	* doc/extras/vim/syntax/groupsconf.vim: added vim syntax file for
	groups.conf (trac ticket #73).

2010-04-08 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py: Added __getstate__() and __setstate__() methods to support
	pickling of NodeSet objects.

	* scripts/clush.py: Add option flag -n NAMESPACE to specify groups.conf(5)
	namespace to use for regrouping displayed nodeset.

	* scripts/clush.py: Add -r (--regroup) option to display default groups
	in nodeset when possible.

2010-04-07 S. Thiell <stephane.thiell@cea.fr>

	* scripts/clush.py: Modified script to support new external "all nodes"
	upcall and node groups.

	* scripts/nodeset.py: Added command flags -l (list groups), -r (used to
	regroup nodes in groups), and also added option flag -n to specify desired
	namespace.

	* NodeSet.py: Added node group support with the help of the new NodeUtils
	module (trac ticket #41). Improved parser to support basic node/nodegroups
	arithmetic (trac ticket #44).

	* NodeUtils.py: New module that provides binding support to external node
	group sources (trac ticket #43).

2010-03-05 S. Thiell <stephane.thiell@cea.fr>

	* Worker/*.py: Do not forget to keep last line and generate an ev_read
	event when it does not contain EOL (trac ticket #66). Added tests.

2010-02-26 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.2 RC 1 released.

2010-02-25 S. Thiell <stephane.thiell@cea.fr>

	* Important code cleaning (use absolute imports, remove some unused
	imports, remove duplicate code, etc. thanks to pylint).

2010-02-22 S. Thiell <stephane.thiell@cea.fr>

	* scripts/nodeset.py: Change command syntax: operations are now specified
	inline between nodesets (trac ticket #45). Update doc and tests.

	* scripts/clubak.py: Fix TypeError exception raised on unexpected input
	and accept 'node:message' line pattern (trac ticket #59).

	* scripts/clush.py: Add -B flag (trac ticket #60) to gather with stderr.

	* NodeSet.py: NodeSet constructor now raises a NodeSetParseError
	exception when unsupported type is used as input (trac ticket #53).

2010-02-21 S. Thiell <stephane.thiell@cea.fr>

	* Task.py: Fix a deadlock when a task is resumed two times from another
	thread (raise AlreadyRunningError instead). Added test.

	* Worker/Worker.py: Improve usage error handling for some methods (trac
	ticket #28), raising WorkerError when needed. Add library misusage tests.

2010-02-18 S. Thiell <stephane.thiell@cea.fr>

	* scripts/clush.py: Disable MsgTree buffering when not performing
	any gathering of results (when -b is not used).

	* Task.py: Allow disabling of MsgTree buffering (trac ticket #3) via
	'stdout_msgtree" and 'stderr_msgtree' Task default keywords, useful if we
	don't want MsgTree internal buffering for fully event-based scripts (eg.
	clush without -b). When disabled, any Task method accessing MsgTree data
	like iter_buffers() will raise a new exception (TaskMsgTreeError).

2010-02-17 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.2 beta 5 released.

2010-02-16 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py: Fix mixed-type comparisons, where, like standard set(),
	are allowed, instead of raising TypeError.

2010-02-15 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.2 beta 4 released.
	
	* MsgTree.py: Added MsgTreeElem.splitlines() method as alias of lines().

2010-02-14 S. Thiell <stephane.thiell@cea.fr>
	
	* Updated doc/man pages for latest clush changes and added clubak tool.

	* Worker/Ssh.py: Fix Ssh worker issue where sometimes stderr buffer could
	not be read completely (trac ticket #50).

2010-02-13 S. Thiell <stephane.thiell@cea.fr>
	
	* scripts/clush.py: Comply with clubak by adding -L option that allow
	switching to alternative line mode display (when using -b). Also, sort
	buffers by nodes or nodeset length like clubak (fix trac ticket #54).

2010-02-11 S. Thiell <stephane.thiell@cea.fr>
	
	* Version 1.2 beta 3 released.

	* scripts/clush.py: For clush --copy, when --dest is not specified, set
	the destination path to the source dirname path and not the source full
	path.

	* scripts/clush.py: Added option --nostdin to prevent reading from
	standard input (fix trac ticket #49).

	* Engine/Factory.py: Disable Engine.EPoll automatic selection as an issue
	has been found with clush when stdin is a plain file (<file redirections).
	Engine.Poll is now the default engine for all platforms. Created trac
	ticket #56 to follow this issue.

2010-02-10 S. Thiell <stephane.thiell@cea.fr>
	
	* Worker/Worker.py: Added missing WorkerSimple.last_error() method. Fixed
	worker bad argument error exception.

	* Worker/Ssh.py: Added command, source and dest public instance variable.

	* Worker/Pdsh.py: Added command, source and dest public instance variable.

	* scripts/clush.py: Due to set_info() behaviour modifications in
	multi-thread mode, change some set_info() for set_default() to modify
	task specific dictionary synchronously. Also remove splitlines() where
	MsgTreeElem are returned instead of whole buffer after latest MsgTree
	improvements.

	* scripts/clubak.py: Added clubak utility (trac ticket #47). It provides
	 dshbak backward-compatibility, but always try to sort buffers by nodes or
	 nodeset. It also provides additional -L option to switch to alternative
	 line mode display.

2010-02-09 S. Thiell <stephane.thiell@cea.fr>

	* Worker.py: Updated Task/MsgTree dependencies. Added iter_node_errors()
	method. Added match_keys optional parameter to iter_node_buffers() and
	iter_node_errors(). Added WorkerSimple.error() method (read stderr).
	Added tests.

	* Task.py: Updated MsgTree dependencies. Factorized most tree data's
	access methods.

	* MsgTree.py: Merged Msg and _MsgTreeElem in one class MsgTreeElem. All
	message objects returned are now instance of MsgTreeElem. Some algorithms
	improvements. Renamed main MsgTree access methods: messages(), items() and
	walk(). Added more docstring.

	* NodeSet.py: Modified NodeSet.__iter__() and __str__() so that nodes are
	now always sorted by name/pattern (eg. acluster2, bcluster1).

2010-02-07 S. Thiell <stephane.thiell@cea.fr>

	* MsgTree.py: Rewrite of MsgTree module with a better API (part of trac
	ticket #47). Adapted library classes. Added specific tests.

2010-02-02 S. Thiell <stephane.thiell@cea.fr>

	* Task.py: Add Task.key_error() and its alias node_error() methods for
	easy retrieving of error buffers for a specified key/node.

	* scripts/clush.py: Fix stdout/stderr separation issue (introduced
	in 1.2b2) thanks to the new Task.set_default() method.

	* Task.py: As set_info() is now dispatched through the task special port,
	and applied only on task.resume() when called from another thread, add two
	new methods default() and set_default() to synchronously manage another
	task specific dictionary, useful for default configuration parameters.

2010-02-01 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.2 beta 2 released.

2010-02-01 A. Degremont  <aurelien.degremont@cea.fr>

	* NodeSet.py: Added __getslice__() and split() method to RangeSet.
	Added split() to NodeSet (trac ticket #18).

2010-02-01 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py: Added equality comparisons for RangeSet and NodeSet. Fixed
	a bug in NodeSet.issuperset().

	* mkrpm.sh: Improve RPM build process and allow SRPM package to be
	easily rebuilt (trac ticket #51).

2010-01-31 S. Thiell <stephane.thiell@cea.fr>

	* scripts/clush.py: Fix broken pipe issue (trac ticket #34).

	* scripts/clush.py: Fix unhandled NodeSet parse error (trac ticket #36).

	* scripts/clush.py: Display uncompleted nodes on keyboard interrupt.

2010-01-29 S. Thiell <stephane.thiell@cea.fr>

	* scripts/clush.py: Return some error code when -S -u TIMEOUT is used
	and some command timeout occurred (trac ticket #48).

	* scripts/clush.py: Display output messages on KeyboardInterrupt (trac
	ticket #22).

	* tests/TaskThreadJoinTest.py: Added test cases for task.join().

	* tests/TaskThreadSuspendTest.py: Added test cases for
	task.suspend().

	* tests/TaskPortTest.py: Added test cases for task.port().

	* Task.py: Improved features in multithreaded environments thanks
	to new port feature: abort(), suspend(), resume(), schedule(), etc.
	are now thread-safe (trac ticket #21).

	* Worker/EngineClient.py: Added port feature, a way to communicate between
	different tasks.

2009-12-09 A. Degremont  <aurelien.degremont@cea.fr>

	* scripts/clush.py: Add -X flag to exclude node groups.
	  Node flags -w/-x/-g/-X can now be specified multiple times.

2009-12-17 S. Thiell <stephane.thiell@cea.fr>

	* Engine/Factory.py: Add engine automatic selection mechanism (trac
	ticket #10).

	* Task.py: Add task_terminate() function for convenience.

2009-12-15 S. Thiell <stephane.thiell@cea.fr>

	* scripts/clush.py: Fix clush -q/--quiet issue again!

2009-12-09 A. Degremont  <aurelien.degremont@cea.fr>

	* scripts/nodeset.py: Protect --separator from code injection and
	handle gracefully incorrect separtor.

2009-12-09 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.2 beta 1 released.

	* scripts/clush.py and library: Add -p option when using --copy to
	preserve file modification times and modes.

	* scripts/clush.py: Fix clush -q/--quiet issue.

	* scripts/nodeset.py: Add separator option to nodeset
	--expand with -S <string> (trac ticket #39).

	* Worker/Pdsh.py: Added copy support for directory (automatic
	detection). Added non-reg tests.

2009-12-08 S. Thiell <stephane.thiell@cea.fr>

	* scripts/clush.py: Added source presence check on copy.

2009-12-07 S. Thiell <stephane.thiell@cea.fr>

	* Worker/Ssh.py: Added copy support for directory (automatic
	detection).

	* Worker/Ssh.py: Fix Scp Popen4->subprocess.popen issue (simple
	quote escape not needed).

2009-11-10 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.2 beta 0 released. Updated doc and man pages for 1.2.

2009-11-09 S. Thiell <stephane.thiell@cea.fr>

	* Engine/EPoll.py: Add stdout/stderr support (still experimental).

	* Worker/Pdsh.py: Fix stdout/stderr support.

	* Backport recent 1.1-branch improvements: tests code coverage, also
	resulting in some fixes (see 1.1 2009-10-28).

2009-11-09 S. Thiell <stephane.thiell@cea.fr>

	* scripts/clush.py: Added stdout/stderr support in clush script.

2009-11-04 S. Thiell <stephane.thiell@cea.fr>

	* Added optional separate stdout/stderr handling (with 1.1 Task API
	compat). Added some tests for that.

	* Create a MsgTree class in MsgTree.py and remove this code from
	Task.py.

	* First changes to use setUp() in test case objects.

2009-08-02 S. Thiell <stephane.thiell@cea.fr>

	* clush.py: (1) remove /step in displayed nodeset when using -b (to
	allow copy/paste to other tools like ipmipower that doesn't support
	N-M/STEP ranges), (2) when command timeout is specified (-u), show
	nodes (on stderr) that didn't have time to fully complete, (3) flush
	stdio buffers before exiting. [merged from branch 1.1]

2009-07-29 S. Thiell <stephane.thiell@cea.fr>

	* tests/NodeSetScriptTest.py: added unit test for scripts/nodeset.py

	* NodeSet.py: fixed a problem with intersection_update() when used
	with two simple nodes (no rangeset).

	* scripts/nodeset.py: merge -i and -X options issue fix from 1.1
	branch (#29)

2009-07-28 S. Thiell <stephane.thiell@cea.fr>

	* scripts/clush.py: remove DeprecationWarning ignore filter (the
	library is now natively Python 2.6/Fedora 11 ready)

	* Change all sets to use built in set type available since Python 2.4
	(the sets module is deprecated).

	* Engine/EPoll.py: added epoll based Engine (Python 2.6+ needed)

	* Engine/Poll.py: added _register_specific() and
	_unregister_specific() methods to match modified Engine base class.

	* Engine/Engine.py: added calls to derived class's
	_register_specific() and _unregister_specific() instead of only
	_modify_specific()

2009-07-23 S. Thiell <stephane.thiell@cea.fr>

	* Replaced popen2.Popen4 (deprecated) by subprocess.Popen (Python 2.4+),
	renaming Worker.Popen2 to Worker.Popen.

	* clush.py: (backport for 1.1 branch) fix another command_timeout (-u)
	issue, now the command_timeout value is passed as the timeout value at
	worker level.

	* Version 1.1 branched.

2009-07-22 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.1 RC 2 released.

	* clush.py: change -u timeout behavior, if set it's now the timeout value
	passed to task.shell() (and not connect_timeout + command_timeout).

	* clush.py: add -o options to pass custom ssh options (#24).

	* Worker/Ssh.py: simple quote escape fix (trac ticket #25).

	* Worker/Popen2.py: simple quote escape fix (trac ticket #25)

	* clush.py: fix options issue when using -f, -u or -t.

2009-07-13 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.1 RC 1 released.

	* Changed license to CeCILL-C (http://www.cecill.info).

	* clush.py (ttyloop): (feature) added '=' special command in
	interactive mode to toggle output format mode (standard/gathered).

	* Engine/Engine.py (register): (bug) register writer fd to even when
	set_writer_eof() has previously been called.

	* Worker/EngineClient.py (_handle_write): (bug) don't close writer
	when some data remains in write buffer, even if self._weof is True.

2009-07-10 S. Thiell <stephane.thiell@cea.fr>

	* clush.py (ttyloop): added a workaround to replace raw_input() which
	is not interruptible in Python 2.3 (issue #706406).

2009-07-09 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py (__contains__): fixed issue that could appear when
	padding was used, eg. "node113" in "node[030,113] didn't work.

2009-07-08 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.1 beta 6 released.

	* clush.py: major improvements (added write support, better
	interactive mode with readline, launch task in separate thread to let
	the main thread blocking tty input, added Enter key press support
	during run, added node groups support (-a and -g) using external
	commands defined in clush.conf, added --copy toggle to clush to copy
	files to the cluster nodes, added -q option, added progress indicator
	when clush is called with gather option -b)

	* Added man pages for clush and nodeset commands.

	* doc/extras/vim (clush.vim): added vim syntax files for clush.conf

	* Engine.py: (feature) added write support to workers

	* Worker: (api)  created a base class WorkerSimple

2009-04-17 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.1 beta 5 released (LUG'09 live update).

	* Worker/Worker.py: (bug) update last_node so that user can call
	worker.last_node() in an ev_timeout handler callback.

2009-04-17 A. Degremont  <aurelien.degremont@cea.fr>

	* clush.py: (feature) make use of optparse.OptionParser

2009-04-15 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.1 beta 4 released.

2009-04-14 S. Thiell <stephane.thiell@cea.fr>

	* Engine/Engine.py (EngineBaseTimer): (bug) fixed issue in timers when
	invalidated two times.

2009-04-06 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.1 beta 3 released.

	* Engine/Engine.py (_EngineTimerQ): (bug) fixed issue in timer
	invalidation.

2009-04-03 S. Thiell <stephane.thiell@cea.fr>

	* Engine/Engine.py (EngineTimer): (api) added is_valid() method to
	check if a timer is still valid.

	* Task.py: (api) added optional `match_keys' parameter in Task and
	Worker iter_buffers() and iter_retcodes() methods.

2009-03-26 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.1 beta 2 released.

2009-03-23 S. Thiell <stephane.thiell@cea.fr>

	* Worker/Worker.py: (api) added Worker.did_timeout() method to check
	if a worker has timed out (useful for Popen2 workers, other use
	DistantWorker.num_timeout()).

2009-02-21 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.1 beta 1 released.

2009-02-20 S. Thiell <stephane.thiell@cea.fr>

	* NodeSet.py (NodeSet): (api) added clear() method.
	(RangeSet): likewise.

	* NodeSet.py (NodeSet): added workaround to allow NodeSet to be
	properly pickled (+inf floating number pickle bug with Python 2.4)

	* NodeSet.py (RangeSet): (bug) don't keep a reference on internal
	RangeSet when creating a NodeSet from another one.

2009-02-16 S. Thiell <stephane.thiell@cea.fr>

	* Version 1.1 beta 0 released.

	* Worker/Ssh.py: (feature) new worker, based on OpenSSH, with fanout
	support (thus removing ClusterShell mandatory pdsh dependency).

	* Engine/Engine.py: (feature, api) added timer and repeater support.

	* 1.0->1.1 internal design changes.


Copyright CEA/DAM/DIF  (2009, 2010, 2011)
Copying and distribution of this file, with or without modification, are
permitted provided the copyright notice and this notice are preserved.