[systemd-devel] Problem with shutdown and automount units

[Harald Hoyer]

On 08.12.2014 15:24, Lennart Poettering wrote:
> On Mon, 08.12.14 11:54, Harald Hoyer (harald at redhat.com) wrote:
> 
>> Today I changed the dracut-shutdown.service [1] to do its job on ExecStop,
>> This was done, to order the action before local-fs.target is stopped. Mainly to
>> run before boot.automount / boot.mount is stopped.
>>
>> Works so far, but, if boot was _not_ yet automounted on shutdown, the
>> boot.automount is blocked to mount in the transition to the shutdown.target.
>>
>> So, if any ExecStop relies on a path, which is normally automounted, but not
>> yet used, it fails on execution.
> 
> Yes, this is correct, we refuse new triggers of busnames, sockets or
> automount units if we area going down, so that the shutdown operation
> is not reversed. This is known behaviour.
> 
> If you know that ExecStop= needs some resource, I'd recommend pulling
> in the unit for it explicitly with Wants=, so that it is pulled in
> already during start. In you case, pull in the .mount unit with Wants=
> in [Unit] and all should be good?
> 
> Lennart
> 

That would defeat the purpose of automount, wouldn't it?
Are you sure, you want to have all units Wants=var.mount Wants=boot.mount
Wants=opt.mount Want=srv.mount, which need /var /boot /opt or /srv in ExecStop?
I know, this does not happen that often, that ExecStart does not need the very
same... just asking.