[Linuxptp-users] SLAVE to UNCALIBRATED on SYNCHRONIZATION_FAULT error seen every 30s

[Karthick G. <kar...@pl...>]

Hi Experts,

I have a ptp slave running where i change my GM clock from one to another
which are time-drifted around 2s.
After i move i see the following issue :
Aug 12 09:51:59 test-server ptp4l: [162965.012] master offset 1031074760 s2
freq +17411724 path delay   8847267
Aug 12 09:51:59 test-server ptp4l: [162965.469] selected best master clock
0012c0.fffe.801ec4
Aug 12 09:51:59 test-server ptp4l: [162965.469] foreign master not using
PTP timescale
Aug 12 09:52:00 test-server ptp4l: [162965.995] master offset 1015789213 s2
freq +16898958 path delay   6467343
Aug 12 09:52:01 test-server ptp4l: [162966.978] master offset 1000683192 s2
freq +16389039 path delay   4799833
Aug 12 09:52:02 test-server ptp4l: [162967.962] master offset  984409317 s2
freq +15746061 path delay   4799833
Aug 12 09:52:02 test-server systemd[1]: Time has been changed
Aug 12 09:52:02 test-server systemd[8525]: Time has been changed
Aug 12 09:52:03 test-server ptp4l: [162968.486] clockcheck: clock jumped
forward or running faster than expected!
Aug 12 09:52:03 test-server ptp4l: [162968.946] master offset 1465017586 s0
freq +15746061 path delay   1830920
Aug 12 09:52:03 test-server ptp4l: [162968.946] port 1: SLAVE to
UNCALIBRATED on SYNCHRONIZATION_FAULT
Aug 12 09:52:04 test-server ptp4l: [162969.930] master offset 1449422162 s0
freq +15746061 path delay   1830920
Aug 12 09:52:05 test-server ptp4l: [162970.349] selected best master clock
0012c0.fffe.801ec4
Aug 12 09:52:05 test-server ptp4l: [162970.349] foreign master not using
PTP timescale
Aug 12 09:52:05 test-server ptp4l: [162970.915] master offset 1433783769 s0
freq +15746061 path delay   1830920
Aug 12 09:52:06 test-server ptp4l: [162971.899] master offset 1415601491 s0
freq +15746061 path delay   4415643

I see the state moving to SLAVE and then back to UNCALIBRATED and then back
to SLAVE.
This continues forever and the clock is not settling.
Kindly let me know if there is any means of fixing the issue.

Driver used :
driver: ixgbe
version: 5.12.5
firmware-version: 0x800004e1, 255.65535.255
expansion-rom-version:
bus-info: 0000:01:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: yes

Regards,
Karthick