Re: [Devil-linux-develop] remote update

[Friedrich L. <fl...@fl...>]

Bruce Smith wrote on 09.02.2004 01:28 MET:
>>>What about automatically updating the stick from CD?  Burn the new image
>>>on CD, boot from CD, and it copies itself to the USB stick.  It could
>>>also be used to initially create a bootable stick (blank).
>>>
>>>Just a thought, CD drives are a LOT cheaper than big memory sticks.
>>
>>What if it boots of off the USB stick, checks for an "update-CD" (just a 
>>normal CD, but created from a newer ISO), does an update if necessary and 
>>then moves one?
> 
> 
> Sure, if that can be done.  I was worried about problems updating a
> running system (replacing libraries in use, etc.), which is why I
> suggested booting off CD.

It has to be done in the initrd anyway and you are not changing those 
libraries when doing the update. And yes this might be a problem of its 
own, we can not change the initrd anymore. Hmmmmm.....then initrd needs 
some fixed parts (does not change across stable version) which loads the 
varibale ones, taking into account to update those if an "update CD" 
exists. Then the rest of the system is updated. Now this might also be a 
good idea to include the update script _from_ CD. This way we can provide 
for a more complicated if we did not think about a specific update problem 
later and as this script is tamper proof (on CD!) it can check all the 
signatures against a provided signature file (is that really needed?).

Sounds to get complicated. What do you think?

-- 
MfG / Regards
Friedrich Lobenstock
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Friedrich Lobenstock                       Linux Services Lobenstock
URL: http://www.lsl.at/                         Email: fl...@fl...
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