[hobbit] Migrate hobbit data

[Iain M Conochie]

Everett, Vernon wrote:
> Yes, but with a caveat.
> If you change architecture, your rrd files might not survive.
> If you go like for like e.g. x86 to x86, you should be fine.
> However, you will have problems if you migrate from X86 to Sparc, or 
> vice-versa.
> There is a workaround, but I would rather have my head set on fire, 
> and put out with a sledghammer.
>  
> If you are going to the same OS, and the same hardware, then it's full 
> steam ahead, and f*** the icebergs.
heh heh heh. Pure class Vern :)