bug#27212: [PATCH] file-systems: Improve error handling in the iso9660 case - fixes boot problem.

[Jelle Licht <jlicht@fsfe.org>]

Leo Famulari <leo@famulari.name> writes:

> On Sat, Jun 03, 2017 at 08:25:00PM +0200, Danny Milosavljevic wrote:
>> Hi,
>>
>> sorry for the slip-up.
>>
>> The error handling in 203a9455c4695152fc5d0085bffeead9ce3216c2 was improved
>> for the case when there's no iso9660 primary volume descriptor anywhere and no
>> terminator either.  In that case the CD is broken.
>>
>> But if there's no iso9660 volume descriptor AT ALL (primary or not) it's not a
>> fatal error for guix gnu/build/file-systems.scm - it just means we picked the
>> wrong filesystem type and should try the next one.  This case was not handled
>> correctly and this patch addresses this.
>>
>> I'd like help with testing this patch.  If someone with a fast computer could
>> apply this patch, then run make check-system, and then, if everything worked,
>> run guix system reconfigure /etc/config.scm , that would be great (my computer
>> is building guix master for the last 3 days and probably needs 4 more - so no
>> idea whether the patch works).
>
> I don't have access to a fast GuixSD system today.
>
> How about reverting the original change now, so that we can reduce the number of
> people who hit the bug. Then we can test the revised commit afterwards.

Good news! My system boots again after applying your patch and
reconfiguring. The make check-system fails a network related test, but
only because of an unrelated problem, as this already happened before
any of these problems started.

- Jelle