On 03/10/2015 03:52 AM, T.C. Hollingsworth wrote:
On Tue, Mar 10, 2015 at 1:26 AM, dwoody5654 <dwoody5654@xxxxxxxxx> wrote:
I have done several searches to find this info. I have searched for systemd,
shutdown, rtc, hwclock and combinations of those key words and not found
what I was looking for.
For F20, during shutdown is the hwclock updated?
No. systemd systems do not touch the RTC on shutdown:
http://lists.freedesktop.org/archives/systemd-devel/2011-May/002526.html
Thanks for the info.
Then I should be able to set the wakealarm to reboot at a specified time
and shutdown. It would then reboot at the time specified in the rtc. For ex.
echo 0 > /sys/class/rtc/rtc0/wakealarm
echo `date -u '+%s' -d '+ 5 minutes'` > /sys/class/rtc/rtc0/wakealarm
#verify alarm is set
cat /proc/driver/rtc
shutdown
The computer never boots up.
In F9 with a small change to the halt init script (halt did update the
hwclock) the computer would boot as desired.
After reading the link you provided I would expect the above to work in
F20, but it does not at least not on my computer.
The output from the `cat /proc/driver/rtc` is:
rtc_time : 10:27:11
rtc_date : 2015-03-10
alrm_time : 10:31:27
alrm_date : 2015-03-10
alarm_IRQ : yes
alrm_pending : no
update IRQ enabled : no
periodic IRQ enabled : no
periodic IRQ frequency : 1024
max user IRQ frequency : 64
24hr : yes
periodic_IRQ : no
update_IRQ : no
HPET_emulated : no
BCD : yes
DST_enable : no
periodic_freq : 1024
batt_status : okay
I am missing something but I cannot figure out what it is.
Any ideas what I have wrong?
Thanks,
David
How can I enable/disable that behaviour during shutdown.
You could create a systemd unit that executes `hwclock --systohc` on shutdown.
-T.C.
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