Thomas Lamprecht 1ff3fef0b0 fix #844: allow to pre-delay start-all-marked guests on boot
Add a simple ExecStartPre command which reads the local node config,
and if a delay is set the helper sleeps that long then exists.

The systemd-unit approach was chosen as this ensures that we really
only delay when doing the startall on node boot. The pve-guests
service does not allows manual stops, starts or restarts, it can only
be pulled in by the multi-user.target

Mark this command with "-" to tell systemd that errors of it should
not cause an abort, it's a best-effort approach.

The journal from a 2 second delay would look like:
> Nov 19 13:13:48 dev6 systemd[1]: Starting PVE guests...
> Nov 19 13:13:48 dev6 pve-startall-delay[2318]: Delaying on-boot 'startall' command for 2 second(s).
> ...
> Nov 19 13:13:50 dev6 pve-guests[2339]: <root@pam> starting task UPID:dev6:00000924:00000529:5DD3DC7E:startall::root@pam:

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
2019-11-20 20:20:58 +01:00
2019-11-05 07:26:28 +01:00
2019-11-19 15:02:50 +01:00
2018-05-04 14:50:04 +02:00
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