[systemd-devel] [PATCH] systemctl: add commands set-default and get-default

[Zbigniew Jędrzejewski-Szmek]

On Fri, May 31, 2013 at 08:29:55AM +0000, "Jóhann B. Guðmundsson" wrote:
> On 05/28/2013 09:05 AM, Vaclav Pavlin wrote:
> >From: Václav Pavlín<vpavlin at redhat.com>
> >
> >systemctl set-default NAME links the default.target to the given unit,
> >get-default prints out the path to the currently set default target.
> 
> Is this not a bit tricky as in dont we need a way to detect (
> introduce Bootable=yes in target units? ) if the administrator(s)
> are linking to a non bootable target and error out gracefully as in
> 
> Something like...
> 
> systemctl set-default nfs.target
> 
> nfs.target not bootable target exiting...
Hm, we could check if the target has AllowIsolate=true, and warn
otherwise. It is possible to boot to an AllowIsolate=false unit,
so it shouldn't be an error.

> Bootable dependency in target not meet
> nfs.target not bootable target exiting...
> 
> otherwise users/administrators might risk linking to a non bootable
> target, reboot and find themselves with an un-bootable host ( which
> might be easy to deal with locally but not so much remotely )?

Zbyszek