[Bug 1683105] Re: Installation of DMRaid should automatically add necessary modules to /etc/initramfs-tools/modules

[David Lee]

Well, the issue is that creating an array differs from machine to
machine, from controller card to controller card.

steps to reproduce:
1. install 3 or more identical drives into the machine
2. Go into controller setup menu. This usually involves pressing a key combination when prompted by the controller during a brief time window option ROM during disk detection phase.
3. Define a new RAID array. Tag all the disks you wish to set up as part of the array. Set up array as RAID 5. 
4. Boot from Ubuntu install DVD or thumb drive as usual.
5. Format drive and create partitions as usual on the RAID array. Proceed with installation as usual. Ubuntu should detect the array because the necessary dmraid packages are on the installation media.
6. Complete the installation and reboot. 


Upon reboot, the kernel would drop to an emergency shell because it could not find the kernel modules for dmraid on the ramdisk.

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https://bugs.launchpad.net/bugs/1683105

Title:
  Installation of DMRaid should automatically add necessary modules to
  /etc/initramfs-tools/modules

Status in dmraid package in Ubuntu:
  Triaged
Status in dmraid source package in Artful:
  Won't Fix

Bug description:
  [Impact]
  Users of fakeraid using raid 5 can not boot their systems because the required kernel module is not loaded by the initramfs.  The hook script simply needs to request this module be loaded.

  [Test Case]
  Install on a fakeraid raid 5

  [Regression Potential]
  None.  Seriously, the worst that can happen is that the requested module is not loaded anyway.

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