its an inner elab. Define ELABINELAB in the inner defs file. Actual hack
is coming in a bit.

nodes are treated specially. For inner boss/ops, ignore most of what
DHCPD returns; we need to do the DHCP so that we know what interface,
but for the moment stuff is hardwired into /etc/rc.conf when the inner
boss and ops are created. I can probably fix this up later as needed,
to be more dynamic for supporting swapout/swapin of an inner emulab,
but swapout and restore of an inner elab has som many open issues,
that not worrying about it now.

For inner nodes, the change is simple; If no hostname provided, ignore
the DHCPD reply completely, favoring a full reply from the inner
control network, and returning -1 from the exit hook so that dhclient
keeps trying in the foreground.

I am committing these so they get into new images.

place.

The only meaningful change was to insert a sched_yield() in the frisbee
decompressor path.  Apparently, the decompressor can run long enough to
cause the incoming socket buffer to overflow.  I was under the assumption
that the decompressor would not run much longer than a single time slice
(0.001 seconds, about 8 packets) before its priority would force it to
be context switched.  But it was running much longer than that!  Forcing
a periodic yield seems to have taken care of this.

One other cause of retransmitted blocks that I saw was where the server
was taking a long time to read data from a file (up to 0.25 seconds).
This would stall the clients and force them to rerequest blocks (which
they do after about 0.10 seconds).  We can improve on this by splitting
the file reading off to a seperate thread.

Most other changes are related to the event logging code.

bit to dhcpd_makeconf.in

the value of boss's control network IP address, which tells frisbeed
how to route our multicast addresses. This came up when trying to
runs frisbeed on elabinelab, where inner boss is effectively
multihomed, with a default route pointing to the external world, not
the inner world!

installs a new root pubkey into /root/.ssh, which comes from a
sitevar.

file with a timestamp in the future (maybe cause timezone not set when
dhclient runs?).

couple of weeks ago) so that tmcd can return the pubkey for image
localization.

does not use its compiled in name, which is qualified and points to
outer boss instead of the closest living boss.

determining the control network interface.

to have to be done in perl; trying to do it with simple substitution
is not really viable.

anchored (force them to be).

browser). This came up in elabinelab cause WWWHOST (www.myemulab.x.y.z) is
not an exported (from outer emulab) CNAME for the bossnode, so I have to
set WWWHOST equal to BOSSNODE, which causes the browser to complain.

retry when getting the topomap, to try and avoid transient NFS errors.
Very silly.

Lbs

* Add -i option to install the new dhcpd file into place, backing up
  the old version. Does not restart dhcpd though; that is left to
  someone else at the moment. May change later. Without -i, works as
  before, writing the new config file to stdout. Of course, must use
  the standard locking protocol to serialize when using -i, lest we
  end up with a garbled dhcpd.conf file.

* Add -t option to specify the template file. Changed default
  behaviour so that without any args, uses the template file in
  /usr/local/etc. Together with -i option, this moves the two
  hardwired paths to a single place (script).

* Changed how utiils/newnode script calls dhcpd_makeconf (call with
  just -i option to let dhcpd_makeconf handle all that icky stuff).

* Changed how install/boss-install script calls dhcpd_makeconf (call with
  just -i option to let dhcpd_makeconf handle all that icky stuff).

* Also change boss-install to use install target in dhcpd directory,
  to install the template file.

the dhcpd config file (for elabinelab) then I previously thought by
making use of dhclient enter/exit hooks in the image.

template file.

	https://www.emulab.net/showosid_list.php3?creator=stoller
	https://www.emulab.net/showimageid_list.php3?creator=stoller

A quickie; it can be worked in better if we want.

laptop, so something (or someone!) screwed up, so here is that change
again.

times have gotten worse since the USENIX paper.  Turns out we were operating
at lower BW than the paper (62/Mb sec vs. 70Mb) due to clock granularity.
The disk was falling idle too much.  Cranked it back up to 72Mb/sec for
"standard" (/usr/testbed) images.  Actually lowered it to about 54Mb/sec
for "user" images that have to be read across NFS (/proj).

Changes to the "auto nice daemon" so it can work better in Emulab.

  * sensors/and/GNUmakefile.in: Emulab-specific make file.  Updated to
    work with a build tree separate from the source and gave it a new
    version number. Files are installed under "/usr/testbed/" on ops.

  * sensors/and/Makefile: Add a warning that this is not the real
    makefile for us.

  * sensors/and/and-OpenBSD.c: Update to work with FreeBSD and add
    support for reporting process start time.

  * sensors/and/and-emulab.conf.in: Emulab-specific configuration,
    similar to the standard one, except it sends mail to tbops when it
    does something.

  * sensors/and/and-emulab.priorities: Emulab-specific priorities
    database. It excludes daemon pseudo users and the event-scheduler,
    otherwise, niceness levels apply to everyone.

  * sensors/and/and.8.man: Add the pid file to the 'FILES' section.

  * sensors/and/and.c: Added support for running a command when a
    niceness level change occurs.  Also writes out the pid file when
    not running in test mode.

  * sensors/and/and.conf.5.man: Add docs for the level commands.

  * sensors/and/and.h: Add start time and child CPU time to the
    and_procent struct.

  * sensors/and/and.startup: Changed to use "test" instead of bash
    syntax and the pid file is now used instead of killall.  Also
    added a "reconfig" option that HUPs the daemon.

experiment, and not count its pnodes or duration as if it was swapped
in! Thanks Kirk.

The actual fix is simple. The script to fix up the existing stats
records was a bear and took me all morning to get right! Even so, its
probably no perfect, but close enough. That script in the sql directory
and mentioned in doc/UPDATING.

tmcc creator query.

and use it in mkusercert.  I need this elsewhere.