attempts by protogeni code.

commit.

use when (re)loading a node.

(class is switch or role is testswitch). Also add a node_type
attribute for all existing switch types: forwarding_protocols=ethernet

partition table lookups here. Used by os_setup, etc.

severely flaky.

reserved yet, and make it reserved into the provided experiment.

move them into hwcheckup.

Make sure nodes are imageable, otherwise straight to hwdown.

Minor fix to Node::MoveReservation().

land in hwdown.

Currently, if a node fails to boot in os_setup and the node is running
a system image, it is moved into hwdown. 99% of the time this is
wasted work; the node did not fail for hardware reasons, but for some
other reason that is transient.

The new approach is to move the node into another holding experiment,
emulab-ops/hwcheckup. The daemon watches that experiment, and nodes
that land in it are freshly reloaded with the default image and
rebooted. If the node reboots okay after reload, it is released back
into the free pool. If it fails any part of the reload/reboot, it is
officially moved into hwdown.

Another possible use; if you have a suspect node, you go wiggle some
hardware, and instead of releasing it into the free pool, you move it
into hwcheckup, to see if it reloads/reboots. If not, it lands in
hwdown again. Then you break out the hammer.

Most of the changes in Node.pm, libdb.pm, and os_setup are
organizational changes to make the code cleaner.

the tb-set-node-os command with a second optional argument; if that is
present, the first arg is the child OS and the second is the parent OS.
We add some new features in ptopgen (OS-parentOSname-childOSname) based
off a new table that maps which child OSes can run on which parents, and
the right desires get added to match.  We setup the reloads in os_setup
along with the parents.  Also needed a new opmode, RELOAD-PCVM, to handle
all this.

For now, users only have to specify that their images can run on pcvms, a
special hack for which type the images can run on.  This makes sense in
general since there is no point conditionalizing childOS loading on
hardware type at the moment, but rather on parentOS.  Hopefully this stuff
wiill mostly work on shared nodes too, although we'll have to be more
aggressive on the client side garbage collecting old frisbee'd images for
long-lived shared hosts.

I only made these changes in libvtop, so assign_wrapper folks are left in
the dark.

Currently, the client side supports frisbee.  Only in openvz for now, and
this probably breaks libvnode_xen.pm.  Also in here are some openvz
improvements, like ability to sniff out which network is the public
control net, and which is the fake virtual control net.

create "proxy" nodes for remote geni nodes.

Clean up method access to reserved table slots.

Changes/Fixes to CreateVnodes() to support cooked mode Protogeni
nodes.

indicates if the bandwidth has actually been reserved in the
interface_state table.

Add checks in CreateVnodes() to make sure that when creating
a vnode on a node, it is either reserved to the experiment or
is a shared experiment. This check is after the table lock to
avoid races with the shared pool expanding and contracting.

record that info in the DB.

object.

Method to find out if a physical node has any virtual nodes allocated
to it.

Method to release the bandwidth that a vnode on a shared host is
using. This uses the vinterfaces table to find out what link is using,
and then increments the remaining_bandwidth of the interface_state
table. Tables are locked of course.

Add method to allocate an rtabid, since like ssh ports on remote
nodes, the rtabid is now a shared counter on a sharedhost.

Hmm, a change to the TipServer() method that was for using console on
boss.

reloaded.

Move the important part of os_select into this library as a method so
that we can just do it from the mapper wrapper without having to call
a shell script for each node in the topo (which on a 2000 node
experiment, takes 45 minutes).

physical state compares properly.

In order to run to completion in impotent mode, create new virtual
node objects, but just don't put them into the DB. This lets the
mapper keep going all the way to the end without making any actual DB
changes.

mulitple vnodes on the same pnode!

Also allow for an OSID argument to SelectOS().

a tracing module I was using.

everyone names their nodes pcXXX ...

figured out.

physical or virtual, as indicated by the isvirtnode flag.

Add SelectOS() method to encapsulate the os_select goo.