https://bugzilla.novell.com/show_bug.cgi?id=463470
User hvengel@astound.net added comment
https://bugzilla.novell.com/show_bug.cgi?id=463470#c2
--- Comment #2 from Hal Engel 2009-01-13 19:05:26 MST ---
The use of refclocks with Linux is fairly new. So I am not surprised that you
do not have access to one. The other issue is that different refclocks have
different configuration requirements. One example is that Oncore refclocks
have a separate configuration file (typically /etc/ntp.oncore<.x>) where most
refclocks are configured using the fudge settings in the main ntp configuration
file.
I now have ntp build for refclock support. So I have a system that is
functioning. I would be willing to test development versions of YAST that have
refclock related updates if that would be helpful.
The two most commonly used refclocks right now are NMEA GPS reveivers like the
Garmin 18LVC and the Motorola Oncore series. Used Oncore modules are cheap and
widely available but it does require some fabrication to make one of these
modules into a working reclock (power supply and RS232 interface need to be
wired up) but the low cost and high accuracy make these popular. The other
really popular refclock is the Garmin 18LVC which is a NMEA device. This also
requires some fabrications but this is much simpler than what is needed for an
Oncore module. If these two drivers were working in YAST most users would be
good to go.
So to make SuSE 11.1 refclock ready the following is needed:
1. A LinuxPPS patched version of the kernel. The ntp-pps-2.6.27-rc3-bis.diff
patch from http://ftp.enneenne.com/pub/misc/linuxpps/patches/ has been used
with the current SuSE 11.1 kernel source RPM and it applied and built without
issues and the PPS support is working.
2. A ntp RPM with nano second support and refclock support.
3. YAST support for refclocks.
Users can get by without #3 but they will have to hand configure ntp for the
refclock. Let me know if there is anything I can do to help you with this.
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