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refclock: add tai option

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This option is for indicating to chronyd that the reference clock is
kept in TAI and that chrony should attempt to convert from TAI to UTC by
using the timezone configured by the "leapsectz" directive.
This commit is contained in:
Chris Perl
2017-10-10 13:23:21 -04:00
committed by Miroslav Lichvar
parent a0fe71eef1
commit f5d1b8fb74
4 changed files with 30 additions and 1 deletions
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7
doc/chrony.conf.adoc
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@@ -549,6 +549,13 @@ but not very precise, reference clock to be safely combined with
unauthenticated NTP sources in order to improve the accuracy of the clock. They
can be selected and used for synchronisation only if they agree with the
trusted and required source.
*tai*:::
This option indicates that the time on the given reference clock is kept in TAI
instead of UTC and that *chronyd* should apply the current TAI-UTC offset to
samples taken from this refclock. To use this, the *leapsectz* directive must
be used as *chronyd* uses the timezone files to compute the TAI-UTC offset.
This option does not make sense if the given refclock is only being used for
PPS input.
*minsamples* _samples_:::
Set the minimum number of samples kept for this source. This overrides the
<<minsamples,*minsamples*>> directive.