Re: bts reassign 878722 partman-auto

[lsorense@csclub.uwaterloo.ca (Lennart Sorensen)]

On Fri, Nov 10, 2017 at 04:19:14PM +0000, Ben Hutchings wrote:
> This is true, but I don't think it's a good reason not to implement a
> mostly-reliable heuristic.
> 
> If there are multiple disks, there are usually going to be just 2 of
> them, one of which contains the installer.  In any installer build
> other than netboot, it will look for its own disk in order to load
> udebs.  Once it has done that, it can determine that the other disk is
> the one to install on.  That's a pretty good heuristic.

I think more than one disk in the machine isn't that unusual.

> Aside from that, we can also make a guess based on the bus type:
> 
> - ATA: probably internal

eSATA is not that unusual.

> - NVMe: probably internal
> - USB: probably external
> - MMC/SD: ambiguous (eMMC must be internal, and Linux has a notion of
> 'non-removable' slots, but I don't think userland has this info)
> 
> If we could get more information about MMC/SD slots then we should be
> able to implement an heuristic that would work for >99% of cases.

You can certainly try to make a good guess, but it certainly still needs
to be confirmed.

-- 
Len Sorensen