Using the lucid kernel, I was able to reproduce, though it took a lot longer than original report implied, easily over an hour, probably more than 3 I wasn't watching it the entire time.
multipath-tools 0.4.8-14ubuntu4.10.04.2 kernel 2.6.32-41-generic udevadm monitor simply stops responding. I cannot remove the dm maps, they say "busy/in use". They are not mounted or used by anyone. Using the same kernel and multipath 0.4.9-3ubuntu5 I was unable to reproduce the issue. So this older kernel helps expose the problem. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to multipath-tools in Ubuntu. https://bugs.launchpad.net/bugs/585027 Title: Race condition with dmsetup causes 'map already present' messages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/multipath-tools/+bug/585027/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs