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[Martin Pitt <martin.pitt@xxxxxxxxxx>]

> So what I can do is to install a 14.04 system with LVM and separate
/home, /tmp/, /usr, and /var, upgrade that to 14.10 and 15.04, and see
if I can reproduce this.

I just did that, and the upgrade worked without a hitch. So I'm afraid
we still don't have a reproducer for this..

/dev/vda1 on /boot type ext2 (rw,relatime)
/dev/mapper/ubu-ubu--usr on /usr type ext4 (rw,relatime,data=ordered)
/dev/mapper/ubu-ubu--tmp on /tmp type ext4 (rw,relatime,data=ordered)
/dev/mapper/ubu-ubu--home on /home type ext4 (rw,relatime,data=ordered)
/dev/mapper/ubu-ubu--var on /var type ext4 (rw,relatime,data=ordered)

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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to systemd in Ubuntu.
https://bugs.launchpad.net/bugs/1460794

Title:
  systemd does not boot with a separate /usr partition

Status in systemd package in Ubuntu:
  Incomplete

Bug description:
  I recently upgraded a server from 14.10 to 15.04. The upgrade claim to
  have worked but the system could not boot afterwards.

  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

  Basically systemd cannot deal with /usr being on a separate partition.
  That needs to be fixed or systemd should not be used for upgrades with
  a separate /usr partition.

  This is related to bug 1460790 but asking for systemd to actually be fixed.
  Please see bug 1460790 if you are looking for a work around on this issue.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: systemd 219-7ubuntu5
  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
  Date: Mon Jun  1 15:29:32 2015
  InstallationDate: Installed on 2010-05-23 (1835 days ago)
  InstallationMedia: Ubuntu-Server 10.04 LTS "Lucid Lynx" - Release amd64 (20100427)
  MachineType: Supermicro X8STi
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_CA.UTF-8
   SHELL=/bin/tcsh
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-18-generic root=UUID=676235cd-93b1-426e-8336-fa0078d96145 ro quiet acpi=off pci=noacpi
  SourcePackage: systemd
  UpgradeStatus: Upgraded to vivid on 2015-06-01 (0 days ago)
  dmi.bios.date: 09/17/10
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 2.0
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: X8STi
  dmi.board.vendor: Supermicro
  dmi.board.version: 1234567890
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: Supermicro
  dmi.chassis.version: 1234567890
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2.0:bd09/17/10:svnSupermicro:pnX8STi:pvr1234567890:rvnSupermicro:rnX8STi:rvr1234567890:cvnSupermicro:ct3:cvr1234567890:
  dmi.product.name: X8STi
  dmi.product.version: 1234567890
  dmi.sys.vendor: Supermicro

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