We landed a fix for this in partman-multipath (4ubuntu2); the bug was not closed because I forgot to add a bug tag. Closing as Fix Released.
** Changed in: multipath-tools (Ubuntu) Status: In Progress => Fix Released -- 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/1445973 Title: multipathd changes the underlying disks of mpathX devices when filesystems are mounted To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/multipath-tools/+bug/1445973/+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