Ubuntu
mdadm package

  1. Bug #925280
  2. Comment #2

Comment 2 for bug 925280

Revision history for this message
Jeff Lane  (bladernr) wrote :

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.