Howto clean install on 11.2 on hw raid1 and lvm?

English Install/Boot/Login
#1

The Yast installer must have some challenges when it comes
to hw raid1 and lvm.

  1. If the disks are clean, Yast Installer (DVD & Live USB)
    fails to partition right. A second start of the installer
    then works and one can complete the partitioning

  2. Once the install is done, two things can happen:
    a) There is no grub in the MBR => no boot
    b) System boots into a sort of rescue mode where
    one can change things.

All in all I have not been successful installing. I guess
I’m hit by bug 505670, which is fixed with a new lvm release,
but even this doesn’t help as I cannot upgrade as the initial
install is broke.

Any ideas/help appreciated.