GNU bug report logs - #18525
Charset Linux modules not automatically loaded

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: ludo <at> gnu.org (Ludovic Courtès)
To: bug-guix <at> gnu.org
Subject: Charset Linux modules not automatically loaded
Date: Mon, 22 Sep 2014 14:31:38 +0200

[Message part 1 (text/plain, inline)]

Forwarded from guix-devel.  Confirmed with Linux-libre 3.16.3 and eudev
1.9 (Guix commit de1c158.)

Ludo’.

[Message part 2 (message/rfc822, inline)]

From: Mark H Weaver <mhw <at> netris.org>
To: guix-devel <at> gnu.org
Subject: Module auto-loading in standalone guix
Date: Tue, 22 Jul 2014 15:05:46 -0400

While playing with standalone Guix, I found that I was unable to mount a
FAT-formatted USB drive.  The kernel generated the following error message:

  FAT-fs (sdb1): IO charset iso8859-1 not found

Loading the nls_iso8859_1 kernel module fixes the problem.

Isn't there normally some mechanism for automatically loading such
modules?  On my extremely simple home-built YeeLoong system, based on
Cross [GNU/]Linux From Scratch, and using a recent linux-libre 3.14.13
kernel that also makes nls_iso8859_1 a module, somehow the module is
loaded automatically.

I confess I'm rather ignorant of how this is supposed to work on modern
systems, but I vaguely recall that this is udev's job.  Is that right?

     Regards,
       Mark

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