Because I just love to push the boat out, I have setup my Gentoo Linux box on a software RAID 1 (mirroring), I have created a volume group with logical volumes for each of the major sections of the file system. I have also put the root partition on one LV and got the system to work, which all the guides tell you not to do. However, when I shut down the system. the LVM never stops correctly, It's tricky to get the exact wording because the filesystems have already unmounted by this point, but it's along the lines of "unable to stop volume group 'main' device or resource busy"; main is the volume group which contains the root group.
Which causes a problem occasionally when I start up again. Is their a way to fix this?