[Bug 1488954] [NEW] systemctl is-active udev returns unknown

[Dr. Jens Rosenboom]

Public bug reported:

There is a symlink in /lib/systemd/system from udev.service to systemd-
udevd.service, however, running "systemctl is-active udev" returns
"unknown" instead of "active" initially. This can be solved by running
"systemctl status udev" once, but for monitoring the service it would be
nicer if the "is-active" would be working out of the box.

$ lsb_release -rd
Description:    Ubuntu 15.04
Release:        15.04

$ apt-cache policy udev
udev:
  Installed: 219-7ubuntu6
  Candidate: 219-7ubuntu6
  Version table:
 *** 219-7ubuntu6 0
        500 http://eu.archive.ubuntu.com/ubuntu/ vivid-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     219-7ubuntu3 0
        500 http://eu.archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages

** Affects: udev (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1488954

Title:
  systemctl is-active udev returns unknown

Status in udev package in Ubuntu:
  New

Bug description:
  There is a symlink in /lib/systemd/system from udev.service to
  systemd-udevd.service, however, running "systemctl is-active udev"
  returns "unknown" instead of "active" initially. This can be solved by
  running "systemctl status udev" once, but for monitoring the service
  it would be nicer if the "is-active" would be working out of the box.

  $ lsb_release -rd
  Description:    Ubuntu 15.04
  Release:        15.04

  $ apt-cache policy udev
  udev:
    Installed: 219-7ubuntu6
    Candidate: 219-7ubuntu6
    Version table:
   *** 219-7ubuntu6 0
          500 http://eu.archive.ubuntu.com/ubuntu/ vivid-updates/main amd64 Packages
          100 /var/lib/dpkg/status
       219-7ubuntu3 0
          500 http://eu.archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages

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