Well, I think I see your problem. But I'm over my head on how to fix it.
>>Activating Device-Mapper RAID(s)
ERROR: creating degraded mirror mapping for "pdc_cijdegaih"
and for your partition table, I see:
251 0 80043200 dm-0
251 1 104391 dm-1
251 2 77834925 dm-2
251 3 2096482 dm-3
The boot process seems to be seizing your sdb drive, and mirroring the partitions into "degraded mirror mapping" partitions. I guess that's why it thinks the sdb2 drive is busy.
I think the typical report here should be "No RAID devices found".
I'm sorry, but I'm not familiar with the intricacies of how the booting process can be getting confused about whether or not this is a RAID device. Maybe somebody else in the forums can pick it up from here.