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Re: Final CDs being written for Stretch - 9.13 release - prior to LTS



>> An alternative is to have "virtual ISO images", i.e. images which are
>> constructed on the fly (presumably by jigdo) on the web-server side.
> Assuming that a complete set of ISOs for whatever medium occupies
> at most 100 GB, it seems better to have the images ready rather than to
> assemble them on demand, even if the mirror latency and bandwidth are
> no problem.
> This would spare the nightmare of managing the life cycle of temporary ISOs
> on the server. I assume that all images would fit on a single modern HDD.

I was thinking of a scheme by which the ISO is constructed and streamed
at the same time, so the complete ISO images aren't ever stored whole
anywhere on the server.

> But the reason for letting the user perform jigdo download is that the network
> load vanishes in the normal traffic of the package servers. If download gets
> interrupted, one just has to start it again to get the remaining work
> completed.

Very good point.  I did not consider the interrupt&restart issue.

> The production of jigdo files is a linear effort only if the producer
> knows where the filesystem stores file content data. This knowledge is in
> the ISO 9660 producers genisoimage and xorriso. For other filesystems
> the matching jigdo producer software is not available yet.

I'm not sure I understand what this means, but it does sound like it
implies that streaming production of ISOs is technically possible.


        Stefan


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