Harald, are you sure the problem you have here is due to mdadm change and not your new kernel change or even fstab change?
The thing is that the NMU in question did not change any stuff in mdadm related to booting. The issue you have is that after the array gets assembled, it isn't handled by udev who populates /dev/disk/* directories. In regular initscript that's done explicitly, but in initramfs it's not done, and as far as i can see, never had. Besides, for filesystems on an md array, it's best to use direct device name (root=/dev/md0) instead of (more modern) label or guuid, since the device name is stable. /mjt -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org