I finally found a solution. I had to zero the superblocks on the missing partitions:
sudo mdadm --zero-superblock /dev/sdb1 sudo mdamd --zero-superblock /dev/sdb3 sudo mdadm --manage /dev/md0 --add /dev/sdb1 sudo mdadm --manage /dev/md2 --add /dev/sdb3 This now shows md0 currently in recovery and md2 as rsync=DELAYED. So either the instructions are incorrect, or there is an issue in how these devices are handled. This test really should not have degraded the array (or disks) to the extent that I had to zero the second disk to re-add. Also it's worrysome that this only occurred on the ext4 LUN and did not affect the swap LUN. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/925280 Title: Software RAID fails to rebuild after testing degraded cold boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/925280/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
