Comment 0 for bug 1683105

This is related to bug 1313169, I have had a sudden bout of clarity on the cause of the issue.

I propose this modification to the dmraid installation script as it is a small but necessary enhancement.

When dmraid is installed, it adds all the necessary hooks to initramfs-tools. However, it has one oversight, that the required raid modules are not added to /etc/initramfs-tools/modules. Without these modules, dmraid will inevitably fail to initialize the array when started since the kernel would not be able to find the required modules in the image.

I propose that when dmraid is installed, during installation the script would check to see if the following items are already in /etc/initramfs-tools/modules, and append the required modules into the bottom of the file if it's not, and then rebuild the initramfs, update grub and if necessary reinstall grub. On uninstall of package, I propose that we should just warn the user but leave the lines in just in case they're using something else that also needs the modules.

The following modules should be appended to the /etc/inmitramfs-tools/modules file:

raid0
dm_raid
raid1
raid10
raid456
async_raid6_recov
async_memcpy
async_pq
async_tx
raid6_pq