update mechanism for new releases

Martin Langhoff martin.langhoff at gmail.com
Tue Jun 23 16:31:49 EDT 2009


On Tue, Jun 23, 2009 at 10:07 PM, Martin
Langhoff<martin.langhoff at gmail.com> wrote:
> A few other notes  -- for completeness:

 - olpc-update depends on a tricky bit of code at boot time that keeps
"OS install" 2 trees in different subdirs, and picks which one to run.
The OS install is kept pristine with hardlinks and various mountpoints
are layered on top, making it a jury-rigged COW setup. This has
various interesting aspects, one of them is that we could  use rpm's
--root option to run a similar "shadow" OS install for resilient
upgrades. %pre and %post scripts could be tricky to handle.

 cheers,



m
-- 
 martin.langhoff at gmail.com
 martin at laptop.org -- School Server Architect
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