[Libosinfo] Script broken for Fedora net ISO

[Christophe Fergeau]

Hey,

On Tue, Nov 04, 2014 at 06:21:31PM +0100, Zeeshan Ali (Khattak) wrote:
> Hi everyone,
> 
> Vladimir Benes recently told me about the issue of express
> installation and net ISOs of Fedora in Boxes. There are two issues
> with this:
> 
> 1. Internet is required w/o script communicating this requirement to App.
> 2. Some remote repositories need to be setup, otherwise installer
> waits for user to manually set them up.
> 
> I thought of some solutions but none without any issues:
> 
> 1. a. Add 'needs-internet' to media entries
>     b. Pass media info to script generation functions.
>     c. Modify fedora script to add required repos if 'needs-internet'
> 
>     This would be my first choice but how can we implement (b) w/o breaking API.
> 
> 2. a. Add 'internet-available' param to InstallConfig
>     b. Modify fedora script to add required repos if 'internet-available'
> 
>     This would add to the work of App as they'll have to check
> availability of internet and set this. FWIW this won't be an issue for
> Boxes at least as it already checks that to ensure scripts requiring
> internet have it available. Perhaps we can assume that for other apps
> too?
> 
> 3. a. script templates specify variants supported
>     b. Add variant info to net ISOs
>     c. We add separate scripts for netiso variants
> 
>     The main/first issue with this would be the fact that volume IDs
> on ISOs are the same for both full and net installer ISOs. AFAIK this
> is true for all distros, not just Fedora.
> 
> Better ideas welcome!

3. sounds much better than the other alternatives. One hackish way to
detect net install images VS full images is that the former will usually
be much smaller than full images (100MB VS 700MB). This must correspond
to 'volume size' in isoinfo output. The Eltorito bootoff (boot offset?)
is different too.
The more specific we get though, the more likely it is we have to add
additional osinfo entries for point releases (debian/ubuntu X.Y.z
releases)

Christophe
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