[systemd-devel] [PATCH] timedated: add --timezone option to set the default timezone

[Greg KH]

On Wed, Mar 19, 2014 at 07:55:35PM +0100, Zbigniew Jędrzejewski-Szmek wrote:
> On Thu, Mar 20, 2014 at 12:39:12AM +0900, juho son wrote:
> > Hi,
> > I omitted explain about.
> > /etc have many system's configuration files. "localtime" is one of them.
> > Normally /etc is on readable and writable location.
> 
> So you've made the directory for configuration read-only, but you want
> to change the configuration, so you're creating a second configuration
> directory to store the new values there. This doesn't make sense to me,
> and is not going to work unless glibc is also modifed, since any program
> will try to read that file.

I'd argue this is the exact opposite of what you really want, you want a
writable /etc/ directory on your system, due to the huge number of
packages that think they can write to it.  What you should be able to do
is have your system easily recover if /etc/ is messed up (i.e. restore
it at boot to a known good state).  Keep everything else on the system
write-only and you should be fine.

> (Not to mention the fact that /opt has a rather different purpose, but
> let's say that this is a secondary issue).

It's not really secondary, but a sign that someone is a bit confused
when creating their filesystem layout :)

greg k-h