Re: [Gnu-arch-users] hurd foo

[Alfred M\. Szmidt]

   Yes, Hurd reached for a platonic ideal and good for them but it
   wasn't a very practical approach.

I'd like to see some backup for the claim that the Hurd isn't a very
practical approach.  I know for a fact that the hurd is actually very
practical.

   Meanwhile, please estimate what it takes to port a file system
   written to the hurd interfaces to Linux.

Not much, most of the code for file-systems tend to be similar.  The
same goes for drivers.  The lower end tends to be quite different so
that a 1:1 port isn't possible.  And in the case with Linux, its
internal API changes all the time without a single thought.  I.e. the
logic is the same, the implementation differs.

   > You might want to look at:
   > http://www.gnu.org/software/hurd/hurd-paper.html .

   You might also want to look at BSD union directories.

Already supported by the Hurd, and not in kernel space, but a seperate
translator.  Also used as the basis for the package manager. :-)