[Bug 603854] Re: When installing onto fake raid grub still tried to install to /dev/sda

[Ubuntu QA's Bug Bot]

** Tags added: testcase

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Title:
  When installing onto fake raid grub still tried to install to /dev/sda

Status in “grub-installer” package in Ubuntu:
  Fix Released
Status in “grub-installer” source package in Lucid:
  Fix Released
Status in “grub-installer” source package in Maverick:
  Fix Released

Bug description:
  Impact: d-i installations onto fake RAID (a.k.a. DM-RAID or SATA RAID) install to /dev/sda rather than to the RAID device.  This may work for a while but leaves the boot arrangements vulnerable to RAID elements going away, different device ordering, etc.
  Development branch (and maverick): http://bazaar.launchpad.net/~ubuntu-core-dev/grub-installer/ubuntu/revision/869
  Patch: See above; the same patch applies with only an offset.
  TEST CASE: Install on a system with DM-RAID using d-i (alternate CD, server CD, or netboot).  (Until new CDs are respun, testing the fixed version will only be possible using netboot, and will require 'apt-setup/proposed=true' on the installer kernel command line.)  Either watch the GRUB installation step closely, or check the output of 'sudo debconf-show grub-pc | grep install_devices:' after installation (you may need to run the value through 'readlink -f' to resolve symlinks); GRUB should be installed to /dev/mapper/something rather than to /dev/sda or similar.
  Regression potential: The variable controlling this code is only set for the DM-RAID and multipath cases, both of which need the same treatment, so assuming it works at all I don't expect anything else to get worse.

  Original report follows:

  Binary package hint: grub-installer

  It was suggested in bug 568050 that I file a new bug for the grub-
  installer portion of installing onto fake raid.  That bug has resolved
  the partman issues around installing onto fakeraid, so now getting
  grub-installer to install onto the raid device is the only remaining
  part to getting it working I think.  Attached is a syslog from an
  install onto fakeraid.  The system is installed and could boot off of
  /dev/mapper/isw_bjffiahcab_Volume0 but grub-installer still chose to
  install to /dev/sda and strangely reported memory leaks.

  This seems to be a long standing issue, and is likely a duplicate bug,
  but I was unable to find exactly the right bug.  grub-installer
  doesn't have any other bugs currently open.

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