Re: Wishlist for features in Skolelinux

[Petter Reinholdtsen <pere@hungry.com>]

[RalfGesellensetter]
> This comment of yours made me actually jump in: I extended that
> range myself, and learned a lot doing so. But it took me 2-3 hours
> of concentrated work (trial & error).

I hope the recipe show up on the wiki soon. :) I know Ole Anders
eagerly awaits it. :)

> Well, the idea of a cluster of virtual distributed disk space (a
> "cloud disk") is quite en vogue, but considering the usage of
> terminal at school, each node would be very prone for being shutdown
> exactly when you need its data. There are other models, where
> universities wake up their clients at night and use them for cloud
> computing.

Random idea using the pieces we already got and making it more robust
to single machines going down:

Export the hard drives using NBD to one machine.  Let this machine
combine all these NBD devices using software raid to one large volume
(or several, if that make more sense).  Create LVM on top of this
volume, and create file systems in LVM for export to the machines
needing disk space.  Depending on the RAID setup, this should handle
one or several machines going down and taking their NBD device with
them without loosing the RAID. :)

Happy hacking,
-- 
Petter Reinholdtsen