02fbcbe3df
Change-Id: I20f80b3614128a2462e87461b9cb9898683fc8fc Signed-off-by: Keane Lim <keane.lim@windriver.com>
47 lines
1.1 KiB
ReStructuredText
47 lines
1.1 KiB
ReStructuredText
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.. hdw1619620921761
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.. _configure-kvm-virtual-ptp-driver:
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================================
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Configure KVM Virtual PTP Driver
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================================
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The |KVM| virtual |PTP| driver allows guests to sync the |VM| reference clock
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to the host's high precision PTP clock reference.
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.. rubric:: |prereq|
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|PTP| must be enabled on |prod| in order to use the |KVM| virtual |PTP|
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driver in guest |VMs|.
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To leverage |PTP| in a |VM| and sync the |VM| reference clock with the
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hosting compute or |AIO|-controller node, do the following in the |VM|:
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.. rubric:: |proc|
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#. Load the |KVM| |PTP| driver:
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.. code-block:: none
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~(keystone_admin)$ modprobe kvm_ptp
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#. Update the reference clock in the chrony config file \(/etc/chrony.conf\):
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.. code-block:: none
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~(keystone_admin)$ refclock PHC /dev/ptp0 poll 3 dpoll -2 offset 0
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#. Restart the chronyd service:
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.. code-block:: none
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~(keystone_admin)$ systemctl restart chronyd.service
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#. Confirm that the |PTP| device is in the list of time sources:
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.. code-block:: none
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~(keystone_admin)$ systemctl restart chronyd.service
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