natty-event_driven-initramfs

The initramfs package in this ppa has an updated mkinitramfs and an updated update-initramfs scripts.
They add switches for an event driven initramfs selection. The code which is added as a change in this ppa will affect only when you invoke update-initramfs/mkinitramfs with the new "-e" switch that indicates that you wish to generate an event-driven initramfs.
Eg: update-initramfs -e -u - shall create/update an initramfs which will be event driven. This comand will never touch your non event driven initramfs. This command creates/updates an initramfs with the following format:
initramfs-<kernel-version>.img.event

When testing you should use this ".event" file!
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Install steps:
1) Install the initramfs package first. Please check the following:
    a) your mkinitramfs is modified (search for "event" - there should be something with this)
    b) your update-initramfs is modified (search for "event" - there should be something with this)
    c) /usr/share/initramfs-tools/ has a new directory called event-driven which has a few files and another directory called upstart-jobs.

2) Install the mountall package. Check if /sbin has mntctl in it. Also verify that /usr/share/initramfs/hooks/mountall file is present and has an executable flag set.

3) Install the upstart package. Verify that your /sbin/init is modified indeed. Run "strings /sbin/init | grep Removing" This should show you some string.
Also verify that /usr/share/initramfs/hooks/upstart file is present and has an executable flag set.
Now, plain reboot - to gain some confidence. Then you can verify your initctl is modified as follows: Run the following command - initctl pivot /root /abc.
This should give you some error which should look similar to "/ may not be on initramfs"

If everything above holds true, then you are ready to go further...
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1) Execute update-initramfs -e -u.
This should print "event-driven and generate some files.."
Also, I have purposefully made the "keep" option on, so that you will have the created initramfs in your /tmp/ dir.
The printed message will indicate what this dir is:
So now verify the following:
1) is a initramfs-<kernel-version>.img.event created?
2) in your /tmp/mkinitramfs_<some-name> dir do you have the following files:
    a) etc/nsswitch.conf - does this entry match "passwd: files"
    b) etc/passwd - does it have an entry with "root" in it.
    c) lib/libnss_files.so* ?
    d) lib/libuuid.so* ?
    e) lib/libnss_compat.so* ?

3) If yes, then reboot and do the following:

At the grub command prompt press "e" and then edit the command line option by adding the following:

1) initrd /boot/<default-initrd-name>.event (just add the .event on the initrd line - a tab will autocomplete it)
2) you could add the --debug option for upstart (by appending it to the root line)
3) if you are using kvm, then you could also redirect your ttyS0 to a file and then add an option console=ttyS0 at the "root=<xyz>" option. This way you can read through the messages that are thrown out by the initramfs.
4) Ctr + x (for booting)

Hopefully you will see your login prompt!

Thanks a tonnes for your help! Awaiting bugs at my email id: <email address hidden>