[Bug 959749] Re: disk-detect/multipath/enable=true fails at loading dm-multipath module

[Colin Watson]

** Also affects: multipath-tools (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: multipath-tools (Ubuntu)
     Assignee: (unassigned) => Colin Watson (cjwatson)

** Changed in: multipath-tools (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/959749

Title:
  disk-detect/multipath/enable=true fails at loading dm-multipath module

Status in “linux” package in Ubuntu:
  Fix Released
Status in “multipath-tools” package in Ubuntu:
  Fix Released

Bug description:
  This appears to be a regression from Lucid. Attached is a screenshot of the fault, and a preseed to reproduce the
  issue. The most relevant parts of the preseed are:

  disk-detect	disk-detect/multipath/enable	boolean	true
  d-i     partman-auto/disk string /dev/mapper/mpath0
  ...
  d-i	pkgsel/include string byobu vim openssh-server multipath-tools multipath-tools-boot

  Which works well with Lucid. However, when I test the precise installer, I get a message
  saying dm-multipath.ko couldn't be loaded and it might be a parameter problem. This
  module doesn't take any parameters. After hitting continue life goes on until I get
  to the partman section which bails because there's no mpath0.

  I tested without setting auto/disk just to see and noted it was only presenting sd devices, it doesn't
  look like multipath was ever loaded.

  I wonder if the requisite modules are even on the installer anymore? The install
  is being performed over PXE.

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