Now I found time to do it. I could track down the problem starting between revs. 2.6.32-36.79 (good) and 2.6.32-37.80 (bad).
The log gives the following changes concerning drivers/md: --- git log --oneline Ubuntu-2.6.32-36.79..Ubuntu-2.6.32-37.80 drivers/md 3fe9b03 md/raid5: abort any pending parity operations when array fails. 0cc3a8b md: Fix handling for devices from 2TB to 4TB in 0.90 metadata. 88eb4ea md/linear: avoid corrupting structure while waiting for rcu_free to complete. --- Most likely the bug is related to the second line (md: fix ...). The first line hardly can be the reason for the bug (I use a Raid 0, not a Raid 5 on this server) René -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1247064 Title: mdraid not assembled correctly when booting from kernel newer than 2.6.32-33 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1247064/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs