David writes: > It's not clear to me which NTP (protocol) packages are set up to use > the util-linux stuff, assuming you're not rolling your own > startup/shutdown scripts. (That's the problem in the Subject line, in > a sense.)
Chrony can. I don't know about Ntpsec. But that doesn't get the adjustment made early enough. > The critical part of the whole operation AIUI is not what happens at > startup, The tricky part, I think, is correcting the rtc before it is used to initialize the system time. Otherwise you'll still have to step or slew the system time. > but at shutdown: writing to the RTC, and the correct preservation of > its state. You write to the rtc and to /etc/adjtime periodically at a rate determined by the computed hot drift rate and also during a controlled shutdown. -- John Hasler j...@sugarbit.com Elmwood, WI USA
