[Bug 1670291] Re: Landscape: Upgrade 14.04.5 to 16.04.2 fails unable to reboot

[Dimitri John Ledkov]

Heh, I believe there are historical options re -H -h. As a wild guess, i
looked at the sysvinit implementation in Debian (we have removed the
package in Ubuntu) it has this:

-h     Halt or power off after shutdown.
-H     Modifier  to the -h flag.  Halt action is to halt or drop into boot monitor on sys‐
       tems that support it.  Must be used with the -h flag.

So clear as mud, and i guess the "portable" way is to call "shutdown -h
-H" or something.

RE: scheduling

I guess you could inspect the system from landscape as follows:
- check system has re-execed into systemd init ( [ -d /run/systemd/system ] )
- check that upstart is gone ( UPSTART_SESSION= initctl version )
- poke the dbus interface to see if logind is there and has support for timing things (probably using busctl http://manpages.ubuntu.com/manpages/xenial/en/man1/busctl.1.html)
- realise the scheduling will not work
- request shutdown now

Imho, failing to schedule thing to shutdown, should shut the machine
down instantly. Or i should upgrade machine from trusty to xenial; and
like snapshot it; and figure out why scheduling does not work / logind
is not there.

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Title:
  Landscape: Upgrade 14.04.5 to 16.04.2 fails unable to reboot

Status in landscape-client package in Ubuntu:
  Fix Committed
Status in systemd package in Ubuntu:
  Incomplete
Status in landscape-client source package in Xenial:
  Confirmed
Status in systemd source package in Xenial:
  Incomplete

Bug description:
  Used Landscape (Paid Canonical Subscription) to upgrade one of my
  machines.

  Landscape only shows "In Progress" for more than 8 hours now and asked
  for a reboot of the machine in a second alert.

  In the reboot attempt I get the message:
  =========================
  Failed to set wall message, ignoring: Method "SetWallMessage" with signature "sb" on interface "org.freedesktop.login1.Manager" doesn't exist
  Failed to call ScheduleShutdown in logind, proceeding with immediate shutdown: Method "ScheduleShutdown" with signature "st" on interface "org.freedesktop.login1.Manager" doesn't exist
  =========================

  Steps to reproduce:
  * Fully updated 14.04.5 machine
  * Open Landscape
  * Choose the machine
  * Choose Packages
  * This computer can be upgraded to a newer release
  * Apply
  * Wait 2 hours
  * Alert comes in a seperate Landscape message Machine is ready for reboot
  * Choose Info... Power
  * Deliver to selected computers as soon as possible
  * Error message

  I found this thread on reddit about this issue maybe the solution can be built into the upgrade script
  https://www.reddit.com/r/linuxquestions/comments/4wy3go/trying_to_run_as_user_instance_but_the_system_has/

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