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bug#20791: GuixSD: cryptsetup luksFormat hangs when udevd is running

From: Ludovic Courtès
Subject: bug#20791: GuixSD: cryptsetup luksFormat hangs when udevd is running
Date: Fri, 12 Jun 2015 19:33:32 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux)

Benz Schenk <address@hidden> 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

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

  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!


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