[Bug 1610361] Re: /usr/bin/deb-systemd-helper: error: systemctl preset failed on samba-ad-dc.service: No such file or directory

[Andreas Hasenack]

> should be fixed so as not to waste everyone's time; even if that does just involve outputting a 
> message like "About to try something as a fallback in case a previous step failed. A 'systemctl 
> preset failed message' is expected so please ignore it." first.

That's exactly what was done in the most recent version:

        echo "Samba is not being run as an AD Domain Controller, masking samba-ad-dc-service."
        echo "Please ignore the following error about deb-systemd-helper not finding samba-ad-dc-service."

I agree it's not optimal, and we should probably keep this bug open
because of that. But it's definitely not a fatal error, and if something
broke, the real error is elsewhere.

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Title:
  /usr/bin/deb-systemd-helper: error: systemctl preset failed on samba-
  ad-dc.service: No such file or directory

Status in samba package in Ubuntu:
  Incomplete

Bug description:
  This is an error seen with that version upgrade; so the apport
  questions can be ignored as this is an upgrade issue, not a using
  problem.

  Unpacking samba (2:4.4.5+dfsg-2ubuntu3) over (2:4.4.5+dfsg-2ubuntu1)
  ...

  ....

  Setting up samba (2:4.4.5+dfsg-2ubuntu3) ...
  Failed to preset unit: Unit file /etc/systemd/system/samba-ad-dc.service is masked.
  /usr/bin/deb-systemd-helper: error: systemctl preset failed on samba-ad-dc.service: No such file or directory

  note: the previous 4.4.5+dfsg-2ubuntu1 upgrade over 4.3.9+dfsg-
  0ubuntu1 was clean. These two upgrades has been made on the same
  session (no reboot); so this can be related if systemd expect some
  activation(s) not made by the previous upgrade.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.10
  Package: samba 2:4.4.5+dfsg-2ubuntu3
  ProcVersionSignature: Ubuntu 4.7.0-0.3-generic 4.7.0
  Uname: Linux 4.7.0-0-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.3-0ubuntu5
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Fri Aug  5 19:30:09 2016
  RelatedPackageVersions:
   nautilus 1:3.20.1-3ubuntu1~yakkety1
   gvfs     1.28.2-1ubuntu1
  SambaClientRegression: Yes
  SourcePackage: samba
  UpgradeStatus: No upgrade log present (probably fresh install)

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