[fedora-arm] System time

[Robert Moskowitz]

On 09/01/2015 12:14 PM, Robert Nelson wrote:
> On Tue, Sep 1, 2015 at 11:10 AM, Robert Moskowitz <rgm at htt-consult.com> wrote:
>> How is system time set?  Is ntpdate run after the network is ready? How long
>> does it retry waiting for the network to be available?
>>
>> I have seen a number of challenges becuase the system time is bac at the
>> epoch start as there is no battery rtc.  And  I wonder how many armv7 boards
>> have a battery to maintain time across boots?
>>
>> Minimally, a process could right the time, in the proper format, to a file,
>> say /etc/currenttime every 5 min and at shutdown.
>>
>> Then date can be run early in the boot process, piping this file in.  It
>> would not be perfect and does not help, much for new installs, but better
>> than epoch start.
>>
>> Plus /etc/currenttime can be at least set to the image build date/time so
>> not even firstboot will be at epoch start.
> systemd v215+ has a nice feature to take care of this:
>
> systemctl enable systemd-timesyncd.service

Thanks!  I see that this DOES work even when no network.  It would be 
good if the images came with this enabled and with the time set to the 
build date/time, so we had a better starting time a firstboot.