I just checked that it got broken between 11.10 and 12.04 release. So if
there's someone capable of checking what versions of mdadm and
initramfs-tools do these two distribution have, then maybe it leads to
the solution.
One thing I noticed from a user perspective is that 11.10 installer
(alterna
I was using this feature successfuly with 11.04 alternate. Right now I
decided to upgrade to 12.04 LTS. It was frustrating to see that this is
not working. I've then checked 12.10 and it's also not working.'
There was some other bug report
https://bugs.launchpad.net/ubuntu/+source/mdadm/+bug/7284
