See https://wiki.ubuntu.com/ReliableRaid and the bugs with [->UUIDudev].
You may well find the reason and workaround of your md devices that are gone after reboot in one of the other bugs filed against the mdadm package that is distributed with ubuntu, but has not seen any maintenance for years. -- mdadm configures device enumeration (not UUID) https://bugs.launchpad.net/bugs/605232 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs