virtnodes in the nodes table so as not to pollute the map with a
zillion nodes that do not actually exist. But, once allocated go ahead
and generate a CNAME so that vwa44-1.emulab.net maps to something (the
"control" net interface).

get the client tracking code right this time!

on any node on any state, in any specific mode, or without any mode
restriction.

The imediate use of this is the FREENODE trigger. Now RELOADDONE adds
a FREENODE trigger on the ISUP state, if the node is in the reloading
expt. Then next time the node hits ISUP, it gets freed from the
reloading expt.

This fix solves the race where recently freed (and still rebooting)
nodes get grabbed by an expt and get rebooted in a way that may hoze
their FS's.

Also fixed a problem that was making it load the db twice on startup.

TBDB_NODEOPMODE_ANY = '*'

Fixed up 'detail' options for viz, and changed
to using a table to position viz image..
Should be a slight improvement.

Add features and desires to the PER_VNODE_TT restrictions. For
desires, we can tell the user which ones can't be satisfied, but for
features, we don't even try to figure out which one(s) keep us from
mapping. From the assign_todo file, this is:
9.   add features/desires to PER_VNODE_TT restrictions

Add a new -P switch, when PER_VNODE_TT is in use. This casues it to
prune out pclasses that no vnode can map to - this can lead to _huge_
time savings, particularly since we put things like wide-area nodes
into the ptop file. I've seen a 98% reduction in time when using both
-p and -P! But, it's not the default yet, because I need to do more
testing to make sure that this isn't hurting solution quality
significantly.  todo item:
8.   prune pclasses when using PER_VNODE_TT

Standardize the exit values from assign:
On success, returns 0
On failures that are not retryable (ie. this top can never be mapped
    to this ptop), returns 2
If SA fails to find a solution (ie., we might consider retrying),
    returns 1

Fix a bug that has annoyed me for a very, very long time - if the
input files don't exist, exit instead of hanging forever!

Make the weight at which a feature/desire is considered 'hard' (ie. it
generates a violation if unsatisifed or undesired) a variable, so that
we'll be able to change it from 1.0 if we want.

Put some more messages that should appear inline in the mail to stderr
instead of stdout.

suffered some bitrot, but its now in sync and running on wa44, which
is destined to be the source of the next image.

Add new crontab file install to run a stub crontab inside jails;
basically, runs the atq and the newsyslog stuff. Other stuff is
turned off including periodic.

Change paths for the vtun debug files to /var/emulab/logs.

accounts on ops. Might be a while before I get back to this.

/users filesystem.

For the benefit of our users,
added 'reboot nodes in experiment' checkbox,
on by default, with a stern warning.

Added "check sitevars" to build, so we can be sure
other sites have all of the requisite site variables
when they install.

Some of it is new; some of it is modified versions
of Rob's schemacheck stuff.

Reorder some options to put force swap (idle-swap) up near the other swap button, so I don't accidentally use the wrong one.

Yep, years from now someone will look at this commit and wonder.

Clear out nsfiles and experiments, since tbend does not do that.
Clear out all users except the person running the test.
DB size is now half of what it was; less churning!

Altered item headers so they don't look bad on modern browsers.

but with the bw shaping actually turned off. Internal option; not
planning to tell users about it.

on in production!

PER_VNODE_TT handles emulated links by simply adding up the total bandwidth
consumed by a vnode, and the total bandwidth available on each pnode. Of
course, this can lead to false positives (knapsack problem), but that's okay,
because it just means we won't bail up front - we'll have to do the full
annealing pass before we decide it's unmappable.

PER_VNODE_TT now also tries to figure out why a vnode is not mappable - if
there are _no_ pclasses that match one of the restrictions, it will print out
something like:
  *** No possible mapping for nodeA
      Too many links!
  *** No possible mapping for nodeB
      Too much bandwidth on emulated links!

This completes the following two items from assign_todo.txt:

6.   fix PER_VNODE_TT and vclasses
7.   fix PER_VNODE_TT and emulated vlinks

Alright...
'dump' -> 'snapshot'.

<pedantic>
Also, since we're inventing a verb, we invent usage too.
What works most of the time is
"snapshot *into* an image descriptor",
but for places where that won't work
(a good example is where you'd otherwise have to
 say 'snapshotting' or 'snapshotted'), we instead
"Obtain a snapshot *for* an image descriptor."
(or "are obtaining", or "obtained".)
</pedantic>

Script and datafile to ensure consistency of off-site sitevariable
definitions-- A lot like schemadiff.

database-fill was inappropriate, since you don't want sitevars
from the main site to overwrite remote sitevars.

Needs to be integrated into install process, probably in the
same way as schemadiff.

experiment, rather than as an administrator, which presents group
permission problems when the experiment is in a subgroup (requires two
additional group, whereas suexec adds only one group). That aside, the
correct approach is to run the swap as the creator. To do that, must
flip to the user (from the admin person) in the backend using the new
idleswap script, and then run the normal swapexp. Add new option to
swapexp (-i) which changes the email slightly to make it clear that
the experiment was idleswapped, and so that the From: is tbops not the
user (again, to make it more clear).

Changed language:
 + 'load' becomes 'dump'
 + 'create from <node>' becomes 'obtain from <node>'

project and group membership table. Add a comment below the table
about where to view/edit group membership and trust levels.

available, and check that against the types of the vnodes in the top file. This
way, we can bail early with a comprehensible error message if, say, there are
not enough pc850s free!

This fixes the following item from the todo list:
13.  add type-count checks

+ Added web page to do post-create loading of image from node.

+ Added menu item for page to Show Image Descriptor submenu.

+ Changed warning in newimageid_ez.php3 to suit new reality.

you're also showing them the red dot for a swap request. Second, add a
noignore flag for idle view (and a link to it from idle view) that will
show you all the idle expts, even if they have the idle_ignore bit set.