[Bug 1093918] Re: grub-probe auto-detection fails on raid

[Launchpad Bug Tracker]

** Branch linked: lp:ubuntu/multipath-tools

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https://bugs.launchpad.net/bugs/1093918

Title:
  grub-probe auto-detection fails on raid

Status in “multipath-tools” package in Ubuntu:
  Fix Released
Status in “multipath-tools” source package in Quantal:
  Triaged

Bug description:
  kpartx was mapping the entire extended partition then stacking the
  logical partitions on that device.  This exposes a device that
  otherwise appears to be an entire disk device containing the logical
  partitions, and this confuses grub.  The extended partition is
  supposed to only expose the first two sectors to allow LILO to be
  installed.

  The patch has been applied upstream now, and since this is the only
  change since quantal, a simple copy to quantal-updates should resolve
  it there as well.  I have done this in my ppa and the reporter has
  verified it has fixed the issue.

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