[Bug 1487679] Re: CRITICAL BUG: Breaking ordering cycle by deleting job NetworkManager.service/start

[Robie Basak]

Note that the workaround here is to edit the file in /etc/init.d/
manually and remove the circular dependency. If somebody familiar could
detail the exact edit here for the benefit of others, that would be
appreciated.

Local changes to /etc will be preserved on package upgrades.

Since there is a workaround, this issue is not critical. See
https://wiki.ubuntu.com/Bugs/Importance for definitions. I'm editing the
subject line of the bug to avoid users getting unrealistic expectations
of an imminent fix.

If somebody would like to volunteer debdiffs that we can upload to fix
this, please do. nbd is already fixed in newer releases, so see
https://wiki.ubuntu.com/StableReleaseUpdates#Procedure for what you need
to do for stable releases.

I don't understand what exactly is the problem with the other packages
that others have added tasks for. It would be helpful if someone could
explain each one using the form of a normal bug report (steps to
reproduce, etc). In particular, it is not helpful to assume that the
same error message means that it is the same bug, since if it turns out
not to be the case, then it just leads to a whole bunch of confusion in
the same bug. If in doubt, please use separate bugs to track different
initially.

** Summary changed:

- CRITICAL BUG: Breaking ordering cycle by deleting job NetworkManager.service/start
+ Breaking ordering cycle by deleting job NetworkManager.service/start

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https://bugs.launchpad.net/bugs/1487679

Title:
  Breaking ordering cycle by deleting job NetworkManager.service/start

Status in systemd:
  Fix Released
Status in avahi package in Ubuntu:
  Confirmed
Status in nbd package in Ubuntu:
  Fix Released
Status in network-manager package in Ubuntu:
  Won't Fix
Status in nfs-utils package in Ubuntu:
  Confirmed
Status in rpcbind package in Ubuntu:
  Confirmed
Status in systemd package in Ubuntu:
  Confirmed
Status in util-linux package in Ubuntu:
  Confirmed
Status in avahi source package in Xenial:
  Confirmed
Status in nbd source package in Xenial:
  Triaged
Status in network-manager source package in Xenial:
  Confirmed
Status in nfs-utils source package in Xenial:
  Confirmed
Status in rpcbind source package in Xenial:
  Confirmed
Status in systemd source package in Xenial:
  Confirmed
Status in util-linux source package in Xenial:
  Confirmed
Status in nbd package in Debian:
  Fix Released

Bug description:
  
  $ lsb_release -rd
  Description:	Ubuntu 15.04
  Release:	15.04

  $ apt-cache policy nbd-client
  nbd-client:
    Installed: 1:3.8-4ubuntu0.1
    Candidate: 1:3.8-4ubuntu0.1
    Version table:
   *** 1:3.8-4ubuntu0.1 0
          500 http://ch.archive.ubuntu.com/ubuntu/ vivid-updates/main amd64 Packages
          500 http://security.ubuntu.com/ubuntu/ vivid-security/main amd64 Packages
          100 /var/lib/dpkg/status
       1:3.8-4 0
          500 http://ch.archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages

  I'm using the nbd-client to mount some raw disk images over the
  network but starting the nbd-client automatically during bootup does
  not happen due to the following:

  Aug 22 08:54:20 fractal kernel: [   11.875885] systemd[1]: Found dependency on nbd-client.service/start
  Aug 22 08:54:20 fractal kernel: [   11.875890] systemd[1]: Breaking ordering cycle by deleting job nbd-client.service/start
  Aug 22 08:54:20 fractal kernel: [   11.875891] systemd[1]: Job nbd-client.service/start deleted to break ordering cycle starting with basic.target/start

  Meaning after boot, I have to manually run `sudo ndb-client start`
  every time I want to access these images. Note that this is no
  diskless system, the images I mount via NBD do not contain the local
  system, they are totally unrelated.

  
  -----------------------------------------------------------------------------
  Bug with NFS-server and RPC-bind is indicated by messages:

  $ journalctl | grep -i break
  ноя 06 22:49:57 norbert-vaio systemd[1]: network.target: Breaking ordering cycle by deleting job NetworkManager.service/start
  ноя 06 22:49:57 norbert-vaio systemd[1]: NetworkManager.service: Job NetworkManager.service/start deleted to break ordering cycle starting with network.target/start
  ноя 06 22:49:57 norbert-vaio systemd[1]: nfs-server.service: Breaking ordering cycle by deleting job rpcbind.socket/start
  ноя 06 22:49:57 norbert-vaio systemd[1]: rpcbind.socket: Job rpcbind.socket/start deleted to break ordering cycle starting with nfs-server.service/start

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