This bug report just enabled me to recover from an upgrade to Ubuntu 18.04.1. So I can confirm that this is still an issue.
Root partition on an LVM volume; LVM physical volume on a software (mdadm) RAID.
The workaround in this comment solved the problem for me: https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/1573982/comments/10
Let me know if I can provide any additional useful information.
This bug report just enabled me to recover from an upgrade to Ubuntu 18.04.1. So I can confirm that this is still an issue.
Root partition on an LVM volume; LVM physical volume on a software (mdadm) RAID.
The workaround in this comment solved the problem for me: /bugs.launchpad .net/ubuntu/ +source/ lvm2/+bug/ 1573982/ comments/ 10
https:/
Let me know if I can provide any additional useful information.