On Fri, 2018-11-09 at 00:08 +0000, Rick Stevens wrote: > On 11/8/18 2:41 PM, Patrick O'Callaghan wrote: > > On Fri, 2018-11-09 at 08:02 +1100, Stephen Morris wrote: > > > how is linux using GMT when everything is running local. > > > > All Unix-based or Unix-derived systems, including Linux, use GMT > > internally, and have done since the very first versions back in the > > 70s. > > Uhm, they _assume_ GMT on the hardware clock. There is no way for the > kernel to verify it's on GMT if it's isolated.
Of course. That's what I mean. The GMT basis for all time measurement in *nix is hardwired. > NTP (chronyd, ntpd, > ntpdate, whatever) will force the clock to GMT, but if you don't run > NTP I can see very weird stuff on file dates and logs because the > kernel will assume GMT on the system and translate it to local time. > > > Even if you set your hardware clock to local time, the internal > > timestamps used for files will be stored as GMT and converted back when > > displayed, according to your timezone environment. This also applies to > > logs. > > Which would explain any mondo weird timestamps in his log. I believe the > OP said there was a significant time jump in the log entries at some > point. I could see this if his clock isn't on GMT and was drug there > kicking and screaming by NTP. Logs produced before NTP got caught up > would assume the old, local hardware clock time (and be way off), then > the clock gets buggered by NTP and the log entries start making sense > from that point. > > This is all surmise on my part, of course. Yes, there is probably some interaction of that sort going on. poc _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org
