The mount point directory /sys/kernel/config is only created after the
module is loaded, hence there's little value in having this an automount
unit: the runtime penalty for mounting an autofs here should be the same
as for a real mount.
With output of services going to syslog by default now, the rescue shell
units need to direct their output to tty explicitly.
Specify stderr too, just in case.
remote-fs.target is ordered after the {auto,}mount units. In case of automount
we do not want to wait for the network to come up before proceeding. In case
of a regular mount unit, the unit will be ordered after network.target
so the behavior is unchanged.
This speeds up boot quite a bit for me when having some services needing
NetworkManager-wait-online.service, and having my home partition on nfs
under an automountpoint.
We don't want to fiddle around changing the RTC, not on bootup, not
on shutdown.
If we don't run NTP, we have absolutely no clue what's the current
time to store in the RTC. If we run NTP, the kernel syncs the system
time every 11 minutes to the RTC.
Especially in multi-boot environents we must not call hwclock(8)
which tries to be smart with calculating/storing/applying drifts
and such.
Live-CDs must never touch the RTC, because we don't know if it is
running in UTC or locatime.
We check for LOCAL in /etc/adjtime and if needed, ask the kernel to
apply the timezone delta to the system clock.
The very first call of settimeofday() without a time, but a timezone
warps the system clock, so that it properly runs in UTC.
