Comment 10 for bug 22301

OK, sorry for the delay; I've been flat-out on other bugs.

I've tried to reproduce this and have got nowhere, but at least I have a
slightly better understanding of what I need now. Could you get me the output of
the following commands at each of the two stages at which you provided partman
logs (i.e. after reaching the partitioning stage with previously configured
physical RAID volumes but before doing anything else, and after trying and
failing to assemble RAID devices):

  ls /dev/md
  cat /proc/mdstat
  /usr/lib/partconf/find-partitions --ignore-fstype

I have a suspicion that one or more of these problems may be involved: (1) we
might not be calling udevstart to get the device nodes created, (2) mdadm might
be having trouble with udev for some other reason, (3) there might be confusion
between different names for the same device node (/dev/scsi/... vs.
/dev/discs/...), (4) something I haven't thought of yet. I'll keep investigating.