ntp.drift doesn't need to be saved often. A reasonably aged computer crystal will probably have quite a frequency error in the tens of parts per million range. That may change by a few ppm over daily temperature cycling but it won't have much of a change of the average over a period of months. So for a new installation of ntpd, let it settle for a couple of days, then save ntp.drift in the config, and then it will just get saved as config changes are made from time to time.
John On 24/01/17 21:23, David M Brooke wrote: > I’ve also thought about preserving the contents of dnsmasq,leases. Sometimes > I scp that file to another machine before a BuC reboot then scp it back again > (and “svi dnsmasq restart”) afterwards. > > It’s not a huge issue to lose the DHCP leases themselves; mostly the pain > comes from DNS not knowing about DHCP-allocated addresses (which dnsmasq > takes care of automagically) after a router reboot, until the leases are > renewed. > > Would adding a script to /etc/rc0.d/ work as a trigger to save the file - at > least for a planned reboot? If the power dies then there’s not much you can > do. > I agree it would be overkill to re-save the file for every lease renewal. > > John’s comment about ntp.drift is a good one and there is other ‘runtime > state’ that might benefit from being saved - e.g. vnstat traffic statistics. > Arguably those settings are different from ‘static config’. > > davidMbrooke > >> On 24 Jan 2017, at 20:11, Erich Titl <erich.t...@think.ch> wrote: >> >> Hi >> >> Am 24.01.2017 um 15:35 schrieb John Sager: >>> I think he wants to save it before every reboot rather than manually. >> >> In the end that is the same, you need to know how to save the config. >> >> You could do that every time a new lease is granted but I think that >> this would be a pretty heavy operation. If you need this for statistical >> stuff then it would be easier to log the leases somewhere else. Actually >> I would not know what else you need the file for. >> >> cheers >> >> ET > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > ------------------------------------------------------------------------ > leaf-user mailing list: leaf-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/leaf-user > Support Request -- http://leaf-project.org/ > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot ------------------------------------------------------------------------ leaf-user mailing list: leaf-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/leaf-user Support Request -- http://leaf-project.org/
