03-01-2012
Time of Day Question
I have a question i need clarification. We had a problem on a p520 system and had to pull the battery on the service processor card. That did the trick and system booted. We forgot to set the time in the service processor before booting. Once AIX was booted we changed the date and time there.
Will the system have the correct time if it is rebooted? Should we change the time in ASMI? It is hard to schedule down time but we will if we have to change it to prevent it from being a problem in the future.
We only have one partition running on this and no HMC attached. I know changing the time in ASMI will require downtime.
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LEARN ABOUT SUNOS
systemd-timesyncd.service
SYSTEMD-TIMESYNCD.SERVICE(8) systemd-timesyncd.service SYSTEMD-TIMESYNCD.SERVICE(8)
NAME
systemd-timesyncd.service, systemd-timesyncd - Network Time Synchronization
SYNOPSIS
systemd-timesyncd.service
/lib/systemd/systemd-timesyncd
DESCRIPTION
systemd-timesyncd is a system service that may be used to synchronize the local system clock with a remote Network Time Protocol server. It
also saves the local time to disk every time the clock has been synchronized and uses this to possibly advance the system realtime clock on
subsequent reboots to ensure it monotonically advances even if the system lacks a battery-buffered RTC chip.
The systemd-timesyncd service specifically implements only SNTP. This minimalistic service will set the system clock for large offsets or
slowly adjust it for smaller deltas. More complex use cases are not covered by systemd-timesyncd.
The NTP servers contacted are determined from the global settings in timesyncd.conf(5), the per-link static settings in .network files, and
the per-link dynamic settings received over DHCP. See systemd.network(5) for more details.
timedatectl(1)'s set-ntp command may be used to enable and start, or disable and stop this service.
FILES
/var/lib/systemd/timesync/clock
This file contains the timestamp of the last successful synchronization.
SEE ALSO
systemd(1), timesyncd.conf(5), systemd.network(5), systemd-networkd.service(8), timedatectl(1), localtime(5), hwclock(8)
systemd 237 SYSTEMD-TIMESYNCD.SERVICE(8)