[Bug 912431] Re: Preseeded 12.04 grub-install failed: Wrong number of args: mapdevfs <path>

[Colin Watson]

On Fri, Jan 06, 2012 at 05:44:28PM -0000, Thomas Bushnell, BSG wrote:
> I'm confused about why chroot_setup is the issue here. It's the apt-
> install command inside the grub_probe command which is spitting out
> output, and the output it spits out looks like typical apt-get output.

apt-install uses chroot_setup, via in-target.  The apt-get output goes
to stderr (due to 'debconf-apt-progress --logstderr') and thence to
syslog and doesn't interfere with grub_probe.  By contrast, the
dpkg-divert output went to stdout.

Besides, chroot_setup is the only thing anywhere around here that
changed recently; I'd have guessed at that myself if Scott hadn't beaten
me to it!

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https://bugs.launchpad.net/bugs/912431

Title:
  Preseeded 12.04 grub-install failed: Wrong number of args: mapdevfs
  <path>

Status in “debian-installer-utils” package in Ubuntu:
  Fix Released
Status in “grub-installer” package in Ubuntu:
  Invalid

Bug description:
  Using the latest precise amd64 mini.iso, grub-install has recently
  started to fail on preseeded installations.  The preseeds have
  remained pretty static relative to mini.iso updates.  I"m not sure
  this is directly related to grub-installer as there hasn't been an
  upload in ~12 weeks, but I am unsure where else to file this.

  After failure, grub-install reports the following in syslog (also
  attached):

  Jan  5 18:19:21 in-target: grub-common is already the newest version.
  Jan  5 18:19:21 in-target: 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
  Jan  5 18:19:21 main-menu[494]: (process:27699): Wrong number of args: mapdevfs <path>
  Jan  5 18:19:21 main-menu[494]: WARNING **: Configuring 'grub-installer' failed with error code 1
  Jan  5 18:19:21 main-menu[494]: WARNING **: Menu item 'grub-installer' failed.

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