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than contacting the dslice agent which no longer exists.

Change ptopgen to look at the eventstate of a node; a node is not considered
free unless it is ISUP or PXEWAIT.

Add TBAvailablePCs() to libdb, removing the corresponding code from
assign_wrapper. This routine does the equiv of ptopgen, returning the
number of PCs that are available for use (looking at eventstate).

Change TBFreePCs in the web interface accordingly.

The above changes correspond to an upcoming change in stated.

If plabmetrics fails and it has been less than two intervals (interval==5 min)
since the stats file was modified, then send a message

If plabmetrics succeeds and it has been more than two intervals since the
last mod, send a "back in business" message.

requested, these are now only sent if the current number of minutes is between
0 and 5.

ns2ir and nseparse to chmod the directories with the right permissions.

now mapped to more than one PC if required. The simnode_capacity
column in the node_types table determines how many sim nodes can
be packed on one PC. The packing factor can also be controlled via
tb-set-colocate-factor to be smaller than simnode_capacity.

- No frontend code changes. To summarize:
  $ns make-simulated {
    ...
  }
  is still the easy way to put a whole bunch of Tcl code to be
  in simulation.
  One unrelated fix in the frontend code is to fix the
  xmlencode() function which prior to this would knock off
  newlines from columns in the XML output. This affected
  nseconfigs since it is one of the few columns with embedded
  newlines. Also changed the event type and event object type
  in traffic.tcl from TRAFGEN/MODIFY to NSE/NSEEVENT.

- More Tcl code in a new directory tbsetup/nseparse
  -> Runs on ops similar to the main parser. This is invoked
     from assign_wrapper in the end if there are simnodes
  -> Partitions the Tcl code into multiple Tcl specifications
     and updates the nseconfigs table via xmlconvert
  -> Comes with a lot of caveats. Arbitrary Tcl code such as user
     specified objects or procedures will not be re-generated. For
     example, if a user wanted a procedure to be included in Tcl
     code for all partitions, there is no way for code in nseparse
     to do that. Besides that, it needs to be tested more thoroughly.

- xmlconvert has a new option -s. When invoked with this option,
  the experiments table is not allowed to be modified. Also,
  virtual tables are just updated (as opposed to deleting
  all rows in the first invocation before inserting new rows)

- nse.patch has all the IP address related changes committed in
  iversion 1.11 + 2 other changes. 1) MTU discovery support in
  the ICMP agent 2) "$ns rlink" mechanism for sim node to real
  node links

- nseinput.tcl includes several client side changes to add IP
  routes in NSE and the kernel routing table for packets crossing
  pnodes. Also made the parsing of tmcc command output more robust
  to new changes. Other client side changes in libsetup.pm and other
  scripts to run nse, are also in this commit

- Besides the expected changes in assign_wrapper for simulated nodes,
  the interfaces and veth_interfaces tables are updated with
  routing table identifiers (rtabid). The tmcd changes are already
  committed. This field is used only by sim hosts on the client side.
  Of course, they can be used by jails as well if desired.

lease for a slice before we've _successfully_ set one up.

swapexp took to mean the experiment was swapped. I hate 8 bits of
status!

us correlate better with log entries on plab nodes.

value under some circumstances, which would result in not actually
timing out children that were taking too long.

If set to zero, we never consider data stale, we use it anyway.
Nodes which don't report any data are still considered unusable.

Also, consider nodes that don't report disk usage as 100% free so that
we will consider them.

allows real PCs to run any OS instead of being constrained to FreeBSD. A
detailed discussion on this topic can be found in the testbed-dev mailing
list under the thread "links between vnodes and real PCs"

though.

since otherwise the warning goes into the XML output and confuses
the converter.

A couple of things:

1) Added PLAB_SLICEPREFIX so that we can separately instantiate plab slices
from mini, or elsewhere.  On the mainbed, its set to "emulab".  On mini, its
set to "emulab_mini".  The "emulab" part has to exist first so that the new
plab node manager doesn't nuke our dslice slivers.

2) Fixed up Plab.getFree() so that it doesn't try to add the same IP twice
to the DB if a new one is found, and listed more than once.

to the node_types_auxtypes and node_auxtypes tables. The goal is to
not have a gaggle of fake types in the node_types table, but rather to
store the virtual types that a node (type) can take on, in the two aux
tables (node_auxtypes holds the count). This removes part of the
special handling of virtual types from ptopgen, and cuts down the
number of bogus entries in the node_types table.

I also did some cleanup. Got rid of a bunch of separate hash tables
and combined into a single hash of "records" indexed by type. This
script could use quite a bit more such cleanup.

node's primary virtual type.

the message instead of tbops.

in the dev tree. I'm tired of problems on the mini that wastes
my time.

Changes include 2 new tmcd commands: tmcc routelist returns
the routes for all the vnodes hosted on a pnode. tmcc role
returns the role of a reserved node, like 'virthost' or
'simhost.  tmcc ifconfig now reports an RTABID field which
is calculated in assign wrapper. All the new changes
in assign wrapper will be checked in after I finish testing.

All the DB changes are in: simnode_capacity in node_types, rtabid in
interfaces and veth_interfaces. New NSE event_objtype and NSEEVENT
event_eventtype. Changed the erole field in the reserved table
to have 'simhost' instead of 'simnode'. Changed the correspoding
libdb subroutines.

interface to the backend. mkproj now looks at the pcremote_ok set
and makes the proper calls to grantnodetype. This reduces the amount
of hardwired goo in the web interface.

Still, there is a bit of hardwired stuff in mkproj. At present we do
not form a relationship between a phys node type and the types we
assign to the virtual nodes. Thats is, nothing says that a pcplabphys
implies the right to use pcplabinet, etc. With only 3 remote phys
types, I just hardwired it into mkproj calling grantnodetype with type
pcplab (the class for the virtnodes) for pcplabphys. Same for pcron
and pcwa, (both get pcvwa). Ultimately we need a better type system.
In general the type system is pretty screwy.

someone with an actual quota.

more liberal about which links don't need delays. Before, we were
putting delays on anything that wasn't 100Mbps.

The other change is that for delay nodes, we set virtual link
bandwidths by rounding up to the next fastest speed of interface,
instead of hardwiring 100Mbps. Similarly, we set the speed of
physical delay interfaces to the card's 'native' speed instead of
hardwiring 100Mbps.

These changes work for our nodes and links, but are still not totally
general. Really, what needs to happen is that assign needs to be the
one to insert delay nodes, because it's the only place where we really
know which interfaces of what speeds are available on which nodes.
But, that is a very big project, since both assign wrapper and assign
need to be changed.

of the same speed. This is obviously not right, but I think it's
better than the old hack, which was that we assume switch ports are
100Mbps.

Some stuff Chris is working on should remove the need for this hack
because we will start keeping track of the speeds of switch ports.

since I had Jonathon check them in prior to testing them.