The bug is still in 12.04 beta 2 with all current updates. My software RAID arrays did neither recover automatically on boot nor did mdadm --add work. I had to zero out the superblocks and manually assemble the RAID arrays.
Ubuntu : Ubuntu precise (development branch) Kernel: 3.2.0-23-generic x86_64 mdadm: 3.2.3-2ubuntu1
The bug is still in 12.04 beta 2 with all current updates. My software RAID arrays did neither recover automatically on boot nor did mdadm --add work. I had to zero out the superblocks and manually assemble the RAID arrays.
Ubuntu : Ubuntu precise (development branch)
Kernel: 3.2.0-23-generic x86_64
mdadm: 3.2.3-2ubuntu1