Awesome, thanks

On Wed, Mar 10, 2021 at 4:15 PM Dan Streetman <1913...@bugs.launchpad.net>
wrote:

> > @rbalint or @ddstreet, do you plan to also backport this to Xenial?
>
> sure
>
> ** Tags removed: verification-needed verification-needed-bionic
> verification-needed-focal verification-needed-groovy
> ** Tags added: verification-done verification-done-bionic
> verification-done-focal verification-done-groovy
>
> --
> You received this bug notification because you are a member of Canonical
> Cloudware, which is subscribed to the bug report.
> https://bugs.launchpad.net/bugs/1913763
>
> Title:
>   hyperv: unable to distinguish PTP devices
>
> Status in systemd package in Ubuntu:
>   Fix Released
> 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"
>   ```
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1913763/+subscriptions
>

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1913763

Title:
  hyperv: unable to distinguish PTP devices

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1913763/+subscriptions

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