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many ZFS mounts on ops. which on the Mothership is on the order of 8000
or so. Deactivate/reactivate a user with:

	boss> wap tbacct deactivate -u <user>
	boss> wap tbacct reactivate -u <user>

Deactivate will set the shell to nologin and set the ZFS mountpoint=none.
Reactivate will undo that. Note that these do not HUP mountd.

picked genesis. But this change actually has content; we need to
distinguish between classic projects and emulab portal projects
(new projects created via the portal, and used via the portal).  For now
these are distinct until we decide to bring everyone up to the new
interface.

to new nfsmounts slot, which is an enum. For the moment we keep them
in sync but still check nonfsmounts.

for the most part that is all they are going to have. We still ignore them
on physical nodes, since they refer to MLE interfaces.

Right now this is strictly advisory.  In particular, swap-ins go through
the normal path and are NOT forced to comply with admission control
wrt future reservations; therefore, reservations don't yet come with
any guarantees at all.

update the DB only.

gets really really big.

This will be used by the power command to tell it to try to power on a
machine that fails to "cycle". ipmitool (or IPMI) seems to fail by default
if you try to cycle a powered-off node.

derived from the PHP code.

We were creating snapshots at the wrong time and not maintaining
them correctly.

database, but really, how many more portals are we really going to add?

Via control network.

current.

current.

Allow notes,size,deltasize when creating a new descriptor.

Clear size and deltasize when creating a new version of a descriptor.

enabled.

version of an image, clear hash/deltahash, they have to be initialized
to new values, so lets not leave cruft around.

When zero, we do not set an expiration on passwords.

	tb-set-packing-strategy pack|balance

defaults to null, which means no strategy (whatever assign does).

type one.

the SelfLoader.

type constraints, which means having to calculate type usage for
the experiment swapping in and making sure we do not cause an experiment
to swap out during a swapmod, because a policy changed.