GNU bug report logs - #20791
GuixSD: cryptsetup luksFormat hangs when udevd is running

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: ludo <at> gnu.org (Ludovic Courtès)
Cc: tracker <at> debbugs.gnu.org
Subject: bug#20791: closed (GuixSD: cryptsetup luksFormat hangs when udevd
 is running)
Date: Fri, 12 Jun 2015 17:34:01 +0000

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Your message dated Fri, 12 Jun 2015 19:33:32 +0200
with message-id <87fv5wg7bn.fsf <at> gnu.org>
and subject line Re: bug#20791: GuixSD: cryptsetup luksFormat hangs when udevd is running
has caused the debbugs.gnu.org bug report #20791,
regarding GuixSD: cryptsetup luksFormat hangs when udevd is running
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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From: Benz Schenk <benz.schenk <at> uzh.ch>
To: bug-guix <at> gnu.org
Subject: GuixSD: cryptsetup luksFormat hangs when udevd is running
Date: Fri, 12 Jun 2015 00:52:43 +0200

Setting up luks encrypted partitions with cryptsetup doesn't work when udevd is running.

cryptsetup luksFormat got stuck waiting on some semaphore to turn to zero

According to http://www.saout.de/pipermail/dm-crypt/2013-November/003619.html this is a udev issue, so i killed udevd and after that it worked

I assume it's some configuration issue with udev, but I don't really know enough about this stuff to pinpoint where exactly the problem lies

I'm using the GuixSD 0.8.2 image, if you need any more information about my setup, feel free to ask

Benz

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From: ludo <at> gnu.org (Ludovic Courtès)
To: Benz Schenk <benz.schenk <at> uzh.ch>
Cc: 20791-done <at> debbugs.gnu.org
Subject: Re: bug#20791: GuixSD: cryptsetup luksFormat hangs when udevd is
 running
Date: Fri, 12 Jun 2015 19:33:32 +0200

Benz Schenk <benz.schenk <at> uzh.ch> skribis:

> Setting up luks encrypted partitions with cryptsetup doesn't work when udevd is running.
>
> cryptsetup luksFormat got stuck waiting on some semaphore to turn to zero
>
> According to http://www.saout.de/pipermail/dm-crypt/2013-November/003619.html this is a udev issue, so i killed udevd and after that it worked
>
> I assume it's some configuration issue with udev, but I don't really know enough about this stuff to pinpoint where exactly the problem lies

Indeed, we were missing the udev rules for device-mapper.  Commit
e1ad6bf fixes that (tested in a VM as produced as by ‘guix system vm
gnu/system/install.scm’.)

If you have a working Guix installation, you can try rebuilding the
image by yourself from a checkout of Guix master, with something like:

  guix system disk-image --image-size=850MiB gnu/system/install.scm

Alternately, as a workaround, you could to the installation in two
steps:

  1. Install without encrypted devices.
  2. Boot the installed system and run ‘cryptsetup luksFormat’.
  3. Run ‘guix system reconfigure’ with the configuration that you want.

Thank you!

Ludo’.

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