Hello Gauthier, or anyone else affected,

Accepted systemd into focal-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/systemd/245.4-4ubuntu3.5 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
focal to verification-done-focal. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-focal. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: systemd (Ubuntu Focal)
       Status: New => Fix Committed

** Tags added: verification-needed-focal

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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/1913763

Title:
  hyperv: unable to distinguish PTP devices

Status in systemd package in Ubuntu:
  Fix Committed
Status in systemd source package in Bionic:
  Fix Committed
Status in systemd source package in Focal:
  Fix Committed
Status in systemd source package in Groovy:
  Fix Committed

Bug description:
  [impact]

  the /dev/ptp0 device for a hyperv instance may not be the correct,
  hyperv-provided, ptp device.

  [test case]

  on some hyperv instance types, particularly those that might contain
  passthrough network card(s) that also provide ptp, the first ptp
  device may not be the correct one to use for ptp, e.g. there may be
  multiple ones:

  $ ls /dev/ptp*
  /dev/ptp0 /dev/ptp1
  $ cat /sys/class/ptp/ptp0/clock_name
  hyperv
  $ cat /sys/class/ptp/ptp1/clock_name
  mlx5_p2p

  the order can change across boots, so a consistent way of addressing
  the hyperv-provided one is needed

  [regression potential]

  any regression would involve failure to properly create the ptp
  symlink, or other failure while udev is processing newly detected ptp
  device(s)

  [scope]

  this is needed in all releases

  this was fixed upstream with the commit
  32e868f058da8b90add00b2958c516241c532b70 which is not yet included in
  any release

  [original description]

  Hyperv provides a PTP device. On system with multiple PTP devices,
  services like Chrony don't have a way to know which one is which.

  We would like to have a udev rule to create a symlink to the hyperv
  clock. This way, services could be configured to always use this clock
  no matter if it is ptp0, ptp1, etc..

  For example:

  ```
  SUBSYSTEM=="ptp", ATTR{clock_name}=="hyperv", SYMLINK += "ptp_hyperv"
  ```

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