::scr Cesium

[Piers Cawley]

David Cantrell <david@cantrell.org.uk> writes:
>> o I shouldn't ever need to reboot
>> *Ever* not even when upgrading the kernel or addin, removinf device drivers
> 
> Riiiight. Without a multi processor box with some deep DEEP voodoo
> that won't be possible. You'd need to stop a processor, bring up the
> new kernel on that one, then stop all the others and bring up the
> new kernel on them. But there will be a point where you are running
> both kernels. And what of in-memory structures which change from one
> kernel to the next? Even in the mainframe world you have to down the
> machine to replace the most fundamental pieces of software.

Actually, there are/were Vax/VMS clusters with uptimes into double
digit years, that in their most recent incarnations were running an OS
that was a couple of major revision numbers higher than where they
started, and where none of the hardware in the cluster had been there
when the cluster started.

-- 
Piers

   "It is a truth universally acknowledged that a language in
    possession of a rich syntax must be in need of a rewrite."
         -- Jane Austen?