Public bug reported: One of my servers has a separate partition for /usr partition.
I recently tried to upgrade my server from 14.04 to 14.10 and then 15.04. The first upgrade went well. The 2nd from 14.10 to 15.04 "succeeded" with no obvious issues until you reboot. Unfortunately what actually happened was a total fail. The result was a system which simply cannot boot. Basically when you attempt to reboot you end up at an emergency maintenance prompt early in the boot process. After a lot of digging one of the messages in the logs gives: systemd[1]: /usr appears to be on its own filesystem and is not already mounted. This is not a supported setup. Some things will probably break (sometimes even silently) in mysterious ways. Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken This leaves users with two options: 1. Connect to IPMI. Boot with a rescue CD and repartition and move software around so you no longer have a separate /usr. This is incredibly PAINFUL! 2. Switch back to upstart see: https://wiki.ubuntu.com/SystemdForUpstartUsers#Permanent_switch_back_to_upstart In my opinion do-release-upgrade should do one of: 1. Check if /usr is on a separate partition before starting the actual upgrade. Display a big warning to user before proceeding. 2. Check if /usr is on a separate partition and automatically switch to upstart if it is. I will file a separate bug in an attempt to get systemd fixed. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: ubuntu-release-upgrader-core 1:15.04.14 ProcVersionSignature: Ubuntu 3.19.0-18.18-generic 3.19.6 Uname: Linux 3.19.0-18-generic x86_64 ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 CrashDB: ubuntu Date: Mon Jun 1 14:55:57 2015 InstallationDate: Installed on 2010-05-23 (1835 days ago) InstallationMedia: Ubuntu-Server 10.04 LTS "Lucid Lynx" - Release amd64 (20100427) PackageArchitecture: all ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_CA.UTF-8 SHELL=/bin/tcsh SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to vivid on 2015-06-01 (0 days ago) ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade vivid -- 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
