Please note attempting to mitigate this by switching back to upstart failed as well.
Doing so did make it so the system would boot past mounting /usr however for no obvious reason the system stopped automatically mounting the /var partition. With no network services running, the system would stop the boot process on a screen and complain /var hadn't mounted and prompt me to press m to enter emergency mode. Once I did that and logged in, /var was in fact not mounted and a mount -av would immediately mount it and then exiting emergency mode would cause a normal boot to complete. This should be a blocking issue for 16.04 as it will cause a lot of grief to end users when servers fail during upgrades. If I didn't have an IPMI remote console device I would have been really stuck. To be clear the only fix that worked was connecting using an IPMI remote console device, booting my server from a rescue iso, taring up each of my partitions with tar cpf and dumping them on a disk outside my raid array. I then wiped all the partitions off my main raid array and switched to a configurations where I had 1 primary boot, 1 primary swap and a root and home partition in a LVM physical volume. I then formated boot ext2, root btrfs and home xfs and extracted all the tars. I then follow a process similar to the one below to reinstall grub: https://help.ubuntu.com/community/Grub2/Installing#via_ChRoot At the end of the process, inside the chroot, I also did an: update-initramfs -u The result was a working system but was way way more effort than should have been required. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1460790 Title: 14.10 to 15.04 upgraded system with separate /usr fails to boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1460790/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
