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[other] MDADM RAID rebuilds incorrectly on reboot

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http://ubuntuforums.org – So my computer has four 1.5 TB drives installed. Up until recently, these drives existed in two RAID1 configurations of 3 TB. Recently I decided to create one large RAID5 device out of them instead. I did this remotely, and had no spare drive to dump data to - so I disassembled one of the RAIDs (it was just a backup of the other from a few weeks back) and since the RAID contained under 1.5 TB of data - I created a partition on one of the disks and stored it there. So I created the RAID5 in a degraded mode with only 3 disks and copied the data back on to the new 4.5 TB RAID. After that, I (Hardware)