GitLab

* setup some fields that parallel the
  elab-in-elab ones, for modifying the dhcpd.conf file.

* tb-set-node-plab-role to set a node as either 'plc' or 'node'
  used to set the DB role field above

making into the eventlist.

fill out the X,Y,Z values for the node.  Might be useful if people
want to do a little computation on the physical locations of motes.

Add topography as an event object type, we use this to notify applets
about dynamic obstacles.  Some event-sched fixes are also included.

	* lib/libtb/tbdefs.h, lib/libtb/tbdefs.c: Add TOPOGRAPHY object
	and CREATE event.

	* robots/emc/emcd.c: Some cleanup for the events that get sent for
	dynamic obstacles.

	* tbsetup/ns2ir/node.tcl, tbsetup/ns2ir/sim.tcl.in,
	tbsetup/ns2ir/topography.tcl: Add Topography's to the virt_agents
	table.

	* event/sched/error-record.c: Fix the format for the filenames
	generated by the program-agent.

	* event/sched/event-sched.c: Mark the start of TIME, change how
	rmcd/vmcd get restarted, and fix the ordering of some events on
	startup.

	* event/sched/simulator-agent.h, event/sched/simulator-agent.cc:
	Record when TIME starts, change how the report is generated, and
	the current time to log messages.

	* event/sched/rpc.h, event/sched/rpc.cc: Add the "virtual"
	topography name to the emcd.config, it's used when sending events
	concerning dynamic obstacles.

Mote and robot related stuff.  The main thing is the addition of relay
capabilities to capture and related things.

	* GNUmakefile.in: Add the capture and tip subdirectories to the
	client and client-install targets.

	* configure, configure.in, config.h.in: Detect srandomdev() for
	capture and add "mote/newmote" script.

	* capture/GNUmakefile.in, capture/capture.c: Add "relay"
	capabilities to capture.

	* capture/capquery.c: Query the capserver for the relay receiver's
	port number.

	* capture/capserver.c: Small hack to return the port number
        for a node.

	* db/libdb.pm.in, db/xmlconvert.in: Add virt_tiptunnels table.

	* event/program-agent/program-agent.c: Change log file names to
	something a little more user-friendly.  Add a "MODIFY" event
	handler that lets the user set agent attributes (command, tag,
	timeout) without having to run a program.

	* event/sched/GNUmakefile.in, event/sched/console-agent.cc,
	event/sched/console-agent.h, event/sched/event-sched.c: Add
	console agents that can be used to snapshot a section of the
	capture log file.

	* event/sched/node-agent.cc: Some minor cleanup.

	* event/sched/simulator-agent.cc, event/sched/simulator-agent.h:
	Add the config data to the report mail.  Add a "RESET" event
	handler that runs "loghole clean".  Save the report mail in a file
	so it gets archived with the rest of the logs.

	* lib/libtb/tbdefs.h: Add CONSOLE object type.

	* mote/GNUmakefile.in, mote/newmote: Add newmote script, just a
	quick hack to add motes to the DB.

	* mote/tbuisp.in: Add another backend for loading motes through
	their relay capture server.

	* robots/mtp/mtp_dump.c: Dump the min/max values for x and y,
	handy for figuring out the bounds of the camera.

	* sql/database-fill.sql: Change the RELOAD-MOTE/SHUTDOWN ->
	ALWAYSUP/SHUTDOWN mode transition to ALWAYSUP/ISUP since stated
	doesn't seem to run triggers after a state change by a mode
	transition.

	* tbsetup/tbreport.in: Change the ordering of the eventlist so it
	displays event-sequences appropriately.

	* tbsetup/ns2ir/GNUmakefile.in, tbsetup/ns2ir/console.tcl,
	tbsetup/ns2ir/node.tcl, tbsetup/ns2ir/parse.tcl.in,
	tbsetup/ns2ir/sim.tcl.in: Add a "console" agent that represents
	the serial console for a node.

	* tbsetup/ns2ir/sequence.tcl: Add an "append" method so it is
	easier to build sequences dynamically.

	* tbsetup/ns2ir/topography.tcl: Make checkdest available to
	regular users.

	* tip/GNUmakefile.in, tip/tiptunnel.c: Add support for uploading a
	file to a relay version of capture and exporting the end
	connection as a pty.

	* tmcd/decls.h, tmcd/common/libsetup.pm: Bump version number since
	the dosubnodelist change is not backwards compatible.

	* tmcd/tmcd.c: Make dosubnodelist and dosubconfig callable even
	when a node isn't allocated.  Add dotiptunnels command that
	returns which serial consoles are to be mounted on a node.  Add
	mote version of subconfig that returns information needed to
	startup the relay version of capture.

	* tmcd/common/bootsubnodes: For motes, startup the relay version
	of capture (XXX stargate specific).

	* tmcd/common/libsetup.pm, tmcd/common/libtmcc.pm,
	tmcd/common/config/rc.config, tmcd/common/config/rc.tiptunnels:
	Client side changes for mounting another nodes serial line.

	* tmcd/common/rc.bootsetup: Always boot the subnodes, even when
	free.  This is used for motes since their capture needs to be up
	for reloading at the time.

	* tmcd/linux/ixpboot: Shuffle some code around so the script
	doesn't fail if the ixp isn't allocated.

	* utils/loghole.in: Add "digest.out" and "report.mail" as global
	logs to be saved in archives and display the "report.mail" file
	when showing a loghole archive.

	* xmlrpc/emulabserver.py.in: Scrub more of the return values to
	get rid of "None"s.

Checkin some changes related to experiment automation and vnode feedback:

	* configure, configure.in: Add sensors/canaryd/feedbacklogs
	template.

	* db/libdb.pm.in, db/xmlconvert.in: Add "virt_user_environment"
	table that holds environment variable names and values.

	* event/lib/event.c: Allocate memory of the right size for
	event_notifications.

	* event/program-agent/GNUmakefile.in: Add version.c file and
	add install targets for the man page.

	* event/program-agent/program-agent.8: Man page describing the
	program-agent daemon.

	* event/program-agent/program-agent.c: Add a bunch of convenience
	features: let the user specify the working directory for commands;
	save output to separate files on every invocation of an agent; let
	the user specify a timeout for a command; make the set of
	environment variables sane and add vars given in the NS file in
	the opt array; a "status" file containing process information is
	written out when children are collected.  Internal changes: child
	processes are collected immediately, instead of waiting for the
	next START event, so we can send back COMPLETE events; the daemon
	now runs with a real-time priority, to increase the chances of
	receiving events.

	* event/proxy/evproxy.c: Made it bidirectional so the
	program-agent's COMPLETE events make it back to the scheduler.

	* event/sched/error-record.c: Change the default log directory.

	* event/sched/event-sched.h, event/sched/event-sched.c: Setup an
	environment similar to a program-agent to run the user's log
	digester.

	* event/sched/node-agent.cc: Add a handler for the SNAPSHOT event
	that runs create_image for the node.

	* event/sched/simulator-agent.h, event/sched/simulator-agent.cc:
	Let the user specify a "DIGESTER" script that digests the log
	files into a summary of the results.  Add event handler for
	remapping a vnode experiment.

	* event/sched/timeline-agent.c: Accept the RUN event as well as
	the START event.

	* os/GNUmakefile.in: Install the install-tarfile.1 man page.

	* os/install-tarfile: Automatically chown/chgrp any files that do
	not have valid user or group IDs, the new owner will be the user
	that swapped in the experiment.  Include the install directory in
	the DB file.  Add a "list" mode that just dumps what files have
	been installed and where.  Add a "force" option so the user can
	forcefully install the file, even though the DB says its already
	there.

	* os/install-tarfile.1: Man page describing the install-tarfile
	tool.

	* os/syncd/GNUmakefile.in: Install man pages on ops.

	* sensors/canaryd/GNUmakefile.in: Link canaryd statically and
	install "feedbacklogs" tool.

	* sensors/canaryd/canaryd.c: Dump dummynet pipe data.

	* sensors/canaryd/canarydEvents.c: Log errors.

	* sensors/canaryd/feedbacklogs.in: Tool used to generate feedback
	data from canaryd log files.

	* sensors/slothd/GNUmakefile.in: Install digest-slothd on ops.

	* sensors/slothd/digest-slothd: Fix some bugs and write out an
	"alert" file with all the nodes/links that were overloaded.

	* tbsetup/os_load.in, tbsetup/libosload.pm.in: Add "waitmode"
	argument that lets you specify that you want to wait for the disk
	to finish loading and/or wait for the node to come back up in the
	new OS.

	* tbsetup/power.in: Remove debugging printf.

	* tbsetup/ns2ir/node.tcl, tbsetup/ns2ir/program.tcl,
	tbsetup/ns2ir/sequence.tcl, tbsetup/ns2ir/sim.tcl.in: Fix some
	quoting problems with event-sequences.  Add -expected-exit-code
	and -tag options to the "$program run" event.  Add -digester to
	the "$ns report" event that lets the user specify a program to run
	to digest the log files.

	* tbsetup/ns2ir/tb_compat.tcl.in: Change the initial scaling
	factor for feedback nodes to 1%, instead of 100%.

	* tmcd/tmcd.c, tmcd/common/libtmcc.pm: Add "userenv" command that
	returns the values in "virt_user_environment".  Return new program
	agent fields: dir, timeout, and expected_exit_code.

	* tmcd/common/GNUmakefile.in: Install rc.canaryd.

	* tmcd/common/bootvnodes: Add hack to boost the program-agents to
	a real-time priority, they can't do it from inside the jail.

	* tmcd/common/rc.canaryd: Rc script for canaryd.

	* tmcd/common/watchdog: Don't fail outright if there is a bad line
	in the battery.log

	* tmcd/common/rc.progagent: Append "userenv" data to the
	program-agent config file.

	* utils/GNUmakefile.in: Install loghole and its man page on ops.

	* utils/loghole.1: Document "clean" command and the change in
	loghole directories.

	* utils/loghole.in: Add "clean" command and parallelization.

	* xmlrpc/emulabserver.py.in: Add "virt_user_environment" table.
	Order the eventlist by "idx" and time, needed for sequences.  And
	removed unnecessary nologin checks.

of the correct type automatically.

Robot-related improvements based on feedback from Sid:

	* event/sched/event-sched.h, event/sched/event-sched.c,
	event/sched/rpc.h, event/sched/rpc.cc: Send a notification of the
	start of event time and timelines.  Add a '-r' option that forces
	it to use the default rpc path (so dan can use a custom
	scheduler/rmcd/etc on ops).

	* robots/GNUmakefile.in, robots/emc/GNUmakefile.in,
	robots/mtp/GNUmakefile.in, robots/primotion/GNUmakefile.in,
	robots/rmcd/GNUmakefile.in, robots/vmcd/GNUmakefile.in,
	robots/tbsetdest/tbsetdest.cc: Add a control-install target.

	* robots/primotion/garcia-pilot.cc: Take out some experimental
	code.

	* robots/primotion/dashboard.hh, robots/primotion/dashboard.cc,
	robots/primotion/pilotClient.cc, robots/primotion/wheelManager.hh,
	robots/primotion/wheelManager.cc: When doing a COMMAND_STOP, make
	sure we only send one update packet, an idle or an abort.  Also
	send back the actual distance travelled/pivoted.

	* robots/tbsetdest/tbsetdest.cc: Don't output setdest event's with
	a speed of zero.

	* tbsetup/eventsys_control.in: When replaying/stopping, clear the
	start of event time for the experiment.

	* tbsetup/power_mail.pm.in: Decrease the threshold used to tell if
	a node has been power cycled "recently".

	* tbsetup/ns2ir/node.tcl, tbsetup/ns2ir/sim.tcl.in: Bah, backout
	last change, orientation is supposed to be in degrees at these
	points.  Also, when automatically picking the sync server, don't
	use nodes that are subnodes.

	* tmcd/common/bootsubnodes: Send an ISUP for motes.

	* www/moteleds.php3: Show the mote node names instead of the
	robots.

	* www/powertime.php3: Add option to mark nodes as powered off.

	* www/robotmap.php3: Display the elapsed time for the overall
	event time and for each active timeline.

	* www/showexp.php3: Only display the blinky lights menu item when
	there are motes.

	* www/shownode.php3: Change "Update Power Time" -> "Update Power
	State".

	* www/tutorial/mobilewireless.php3: Fix some nits.

	* xmlrpc/emulabserver.py.in: Add event_time_start method for
	storing/getting/clearing the start of event time for an
	experiment/timeline.

Some more robot integration.

	* event/lib/event.h, event/lib/event.c: Add some
	event_notification creation functions that get used in
	event-sched.

	* event/sched/event-sched.c, event/sched/rpc.h,
	event/sched/rpc.cc: Sync the start of event time with the
	robots reaching their initial positions.  This is done by
	creating a master event-sequence that takes care of sending
	the SETDEST events and then starting the Simulator timeline.

	* mote/tbuisp.in: Use node_reboot instead of ssh'ing in.

	* robots/GNUmakefile.in: Don't build tbsetdest if ulsshxmlrpcpp is
	not available.

	* robots/emc/loclistener.in: Clear the destination values for a
	node when it reaches its destination.

	* robots/primotion/garcia-pilot.cc,
	robots/primotion/pilotClient.cc: Some cleanup and debugging.

	* robots/primotion/wheelManager.cc: Check the rear sensors for
	obstructions and then decide which way to pivot.

	* robots/rmcd/pilotConnection.h, robots/rmcd/pilotConnection.c,
	robots/rmcd/rclip.h: Even more tweaking.

	* robots/tbsetdest/tbsetdest.cc: Don't generate points that are
	outside the camera bounds or inside an obstacle.

	* robots/vmcd/visionTrack.c, robots/vmcd/vmcd.h,
	robots/vmcd/vmcd.c:  Add more debugging output.

	* tbsetup/os_setup.in: Removed the robot hack used when deciding
	which nodes to reconfig/reboot.  Added a robot hack to avoid
	rebooting a robot whose mote is being os_load'd, since it would
	interrupt tbuisp which does the reboot anyways.  Also fixed a
	small typo.

	* tbsetup/ns2ir/node.tcl, tbsetup/ns2ir/sim.tcl.in: Oops, forgot
	to convert degrees to radians.

	* tbsetup/ns2ir/topography.tcl: When checking for node destination
	points in obstacles, include the implicit exclusion zone.

	* tmcd/common/bootsubnodes: Add empty "mote" case.

	* tmcd/linux-sg/GNUmakefile.in: Make some of the /etc subdirs when
	doing the install.

	* tmcd/linux-sg/rc.stargate: Start garcia-pilot.

	* vis/floormap.in: Add options for showing the camera bounds,
	obstacle exclusion zones, and displaying vnames instead of pnames.

	* www/ledpipe.php3: Finally figured out how to use a socket
	instead of popening a perl script.

	* www/robotmap.php3: Add checkboxes for displaying/not displaying
	the camera bounds and obstacle exclusion zones.  Add a legend
	showing what actual vs. destination points are.  Pass pid/eid
	through to vis/floormap if it is given.

	* www/showexp.php3: Add a "Robot Map" link to experiments that
	have allocated garcias.

	* www/floormap/map_legend_node.gif,
	www/floormap/map_legend_node_dst.gif: Icons used by the robot map
	legend.

	* www/floormap/robots-4.jpg: Added an obstacle around the entryway
	so people are slightly less likely to trip over the robots.  Added
	a coordinate system legend to the top left corner.

	* www/tutorial/mobilewireless.php3: Add links to David's movie of
	the robot making its way around the pillar.

	* www/tutorial/robot_anim.gif: A nifty gifanim clip of the robot
	movie.

	* xmlrpc/emulabserver.py.in: Pull the camera data from the DB,
	instead of returning hardcoded stuff.

More robot integration and some event system updates.

	* configure, configure.in: Detect rsync for loghole and add
	utils/loghole to the list of template files.

	* db/libdb.pm.in, db/xmlconvert.in: Add virt_node_startloc to the
	list of virtual tables.

	* event/lib/event.h, event/lib/event.c, event/lib/tbevent.py.tail:
	Add event_stop_main function to break out of the event_main()
	loop.  Add timeline to the address tuple.

	* event/sched/GNUmakefile.in, event/sched/error-record.h,
	event/sched/error-record.c, event/sched/event-sched.8,
	event/sched/event-sched.h, event/sched/event-sched.c,
	event/sched/group-agent.h, event/sched/group-agent.c,
	event/sched/listNode.h, event/sched/listNode.c,
	event/sched/local-agent.h, event/sched/local-agent.c,
	event/sched/node-agent.h, event/sched/node-agent.cc,
	event/sched/queue.c, event/sched/rpc.h, event/sched/rpc.cc,
	event/sched/simulator-agent.h, event/sched/simulator-agent.c,
	event/sched/timeline-agent.h, event/sched/timeline-agent.c:
	Updated event scheduler, not completely finished, but well enough
	along for the robots.

	* lib/libtb/GNUmakefile.in, lib/libtb/popenf.h,
	lib/libtb/popenf.c, lib/libtb/systemf.h, lib/libtb/systemf.c: Add
	some handy versions of system/popen that take format arguments.

	* lib/libtb/tbdefs.h, lib/libtb/tbdefs.c: Add some more event and
	object types.

	* tbsetup/assign_wrapper.in: Add the virt_node_startloc building
	to desires string for a node.

	* tbsetup/ptopgen.in: Add a node's location to the feature list.

	* tbsetup/tbreport.in: Display the timeline/sequence an event is a
	part of.

	* tbsetup/ns2ir/GNUmakefile.in: Add timeline, sequence, and
	topography files.

	* tbsetup/ns2ir/node.tcl: Add initial position for nodes and allow
	them to be attached to "topographys".

	* tbsetup/ns2ir/parse-ns.in: Make a hwtype_class array with a
	node_type's class.  Make an 'areas' array that holds the
	buildings where nodes are located.  Make an 'obstacles' table
	with any obstacles in the building.

	* tbsetup/ns2ir/parse.tcl.in: Move named-args function from
	tb_compat.tcl to here.  Add reltime-to-secs function that converts
	time given in a format like "10h2m1s" to a seconds value, used in
	"$ns at" so its easier to write time values.  Add "K", "Kb", and
	"Kbps" as possible units for bandwidth (only the lowercase
	versions were available before).

	* tbsetup/ns2ir/program.tcl: Add "dir" and "timeout" attributes,
	although they don't go anywhere at the moment.

	* tbsetup/ns2ir/sequence.tcl, tbsetup/ns2ir/timeline.tcl,
	tbsetup/ns2ir/topography.tcl: Initial versions.

	* tbsetup/ns2ir/sim.tcl.in: Add support for timelines and
	sequences.  Add 'node-config' method to change the default
	configuration for nodes produced by the Simulator object.  Send an
	initial MODIFY event to any trafgen objects so their configuration
	gets through, even when there are no start/stop events.  Move
	event parsing to the 'make_event' method.

	* utils/loghole.1, utils/loghole.in: Loghole utility, used for
	retrieving logs from experimental nodes and creating archives of
	the logs.

	* xmlrpc/emulabclient.py.in: Escape any strange characters in the
	output field.

	* xmlrpc/emulabserver.py.in: Add virt_node_startloc to the list of
	virtual_tables.  Add emulab.vision_config and
	emulab.obstacle_config methods for getting information pertaining
	to the robots.  Change the OSID listing to include more fields.
	Add a "physical" aspect to experiment.info to get information
	about the physical nodes.  Add parent field to the events in the
	array returned by eventlist.  Add sshdescription to get extra
	information needed to log into a vnode.  Add node.statewait so you
	can wait for nodes to come up.

Make the dots move on the robot map web page:

	* configure, configure.in: Add robots/emc/loclistener.

	* event/lib/event.h, event/lib/event.c: Add some helper functions
	for sending events and parsing args.

	* event/lib/tbevent.py.tail, event/lib/tbevent.py: Add support for
	clients that register using keyfiles.

	* robots/emc/GNUmakefile.in: Install loclistener on boss.

	* robots/emc/emcd.h, robots/emc/emcd.c: Send update events every
	two seconds with the node's location.  Fill out a little more of
	the event callback, not sure what to do with the requested
	destination though.  Add some code to the vmc callback to store
	position updates.  Changed the config file format to also include
	the vname of the robot.

	* robots/emc/loclistener.in: Listen for NODE MODIFY events with
	coordinates and update the database accordingly.  Kinda sucks, but
	it works.

	* robots/emc/test_emcd.config: Add vnames to the robots to reflect
	change in the config file format.

	* tbsetup/ns2ir/node.tcl: Add nodes to the...

Minor additions to support node mobility events:

	* lib/libtb/tbdefs.h, lib/libtb/tbdefs.c, sql/database-fill.sql:
	Add SETDEST as an event type and NODE as an object type.

	* tbsetup/ns2ir/node.tcl:
	Add location (X_, Y_, Z_) and orientation attributes for mobile
	nodes.

	* tbsetup/ns2ir/sim.tcl:
	Add a "setdest" event for node types that lets the user move a
	mobile node.

Add elab_in_elab boolean to experiments table. Add inner_elab_role
to virt_nodes table, which is one of boss,ops,node.

new directive for your NS file: tb-use-physnaming(1) which means that
if you have a line like this:

	set pc6 [$ns node]

and pc6 is an actual name of a physical node, then do an implicit
"fixnode" to pc6. In other words, pc6 is the name of the node in your
NS file (virtual topo) *and* will be fixed to the real pc6. Needless
to say, if pc6 is allocated when you go to swapin, you lose.

major but it now works.

well known name so you can control it via the usual event mechanisms
(ns "at" and tevc). Previously, its name came from an internal
counter, and because the routine that creates the program object is
not at "toplevel", the parser would not rename the object. I'm sure
someone who understands this cruft could do better!

Anyway, now they are named as ${vname}_startcmd.

This is typically irritating to figure out in the parser!

fixed fix before declaring the fix was fixed. Note that I haven't
tested this fix either.

desire for 'hosts-<type>', where <type> is the type of its child node.
This helps assign, because it can now limit the number of places to
try assigning the host, and it means that we can give the hosts this
feature, so that they don't get used for other purposes. For example,
we can give the IXP-hosting nodes the feature 'hosts-ixp-bv' with
weight 1, and they will never get used for anything but IXP hosting.

This means that the node_type_features (or just node_features) table
must now have hosts-<type> entires to work correctly.

put:
$node add-desire desire weight

This will end up in the virt_node_desires table. assign_wrapper now
puts the desires from this table into the top file.

your NS file:

	tb-set-netmask $lan0  "255.255.240.0"
	tb-set-netmask $link0 "255.255.255.248"
	tb-set-netmask $link1 "255.255.255.240"

Yep, more rope for the user to hang herself with. Notes:

* You are restricted to 255.255.XXX.XXX. I did not see a reason to
  allow the user that much rope.

* get_subnet can handle 10 or 192.168 addresses so that other sites
  can continue to operate without changing to 10 addresses, although
  they will still be able to change the netmask.

* I've changed the handling for widearea networks to use 192.168, but
  I force the netmask to 255.255.255.248 so that we are not restricted
  to just 255 networks (not that it really matters). To avoid possible
  confusion, the user is not allowed to choose their own IPs for
  widearea networks, and I actually set them to 1.1.x.x, and then
  patch it up later. This is to avoid conflict with existing
  experiments where people may have used tb-set-ip in their NS files.

* There are tmcd and staticroutes and image changes that are required
  to make this all work right!

	set myixp [$ns node]
	set ixphost [$ns node]
	tb-set-hardware $myixp ixp-bveil
	tb-fix-node $myixp $ixphost
	tb-set-node-os $ixphost RHL-STD

This gives you a handle on the host node so you can treat it like a
normal testbed node, including setting the OSID.

There are associated assign_wrapper changes, but I won't check those
in till I get back from vacation; not enough people around this coming
week in case I screwed something up.

* A node method to create a startup routine:

	$node start-command "$mydir/batchcmd.sh >& $mydir/b1.log"

* And some old style syntactic pepper:

	tb-set-node-startcommand $nodeb1 "$mydir/batchcmd.sh >& $mydir/b1.log"

The latter is intended to replace the exiting tb-set-node-startup
function. The new implementation of the above is to use a program
object that starts at time 0.

do the actual parse. The parser now spits out XML instead of DB
queries, and the wrapper on boss converts that to DB insertions after
verification. There are some makefile changes as well to install the
new parser on ops via NFS, since otherwise the parser could
intolerably out of date on ops!

routing tables, a jail can be a router quite nicely.

(only 1 lan/link connection). An interim solution until we solve the
routing problem for "virtual" router nodes completely. Also added a
new global "enforce_user_restrictions" that you can set in your .ns
file to turn of this check, and some others.

(the IXPs) with more.  Will probably put this check back in later,
with the maixumum number of links coming from the database, per
node type.

(jailed) or for the nodes that are hosting virtual nodes. The checks
are here so that errors are caught early on, and because its better
than messing with assign_wrapper!

nodes. The second argument can now be an NS node instead of the name
of a real testbed node. For example:

	tb-set-hardware $node3  pc600
	tb-set-hardware $nodev1 pcvm600
	tb-fix-node $nodev1 $node3

So, "fix" $nodev1 to $node3. The intent is that once $node3 is
allocated by assign to a real testbed node, we can then allocate a
virtual node on pcXX to $nodev1. I did this primarily to allow for
easy testing of jails via my NS file, without having to hack assign
wrapper to deeply. Note there are still hacks in assign_wrapper to
support this, but they are not extensive.

Also my old usewatunnels stuff I never checked in:

	tb-set-usewatunnels 0/1

simulated nodes.

now it is just hardcoded to 4, but could be done from the db too. Gives
errors like this one, from a topo where node2 and node6 each have 5 links:

*** /usr/testbed/devel/newbold/lib/ns2ir/parse.tcl:
    Too many links/LANs to node node2! Maximum is 4.
*** /usr/testbed/devel/newbold/lib/ns2ir/parse.tcl:
    Too many links/LANs to node node6! Maximum is 4.
*** /usr/testbed/devel/newbold/bin/batchexp:
    NS Parse failed!