Re: F38 proposal: Shorter Shutdown Timer (System-Wide Change proposal)

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On Fri, Dec 23, 2022 at 08:09:56AM +0100, Tomasz Torcz wrote:
> On Thu, Dec 22, 2022 at 05:22:09PM -0500, Steve Grubb wrote:
> > On Thursday, December 22, 2022 1:29:29 PM EST Adam Williamson wrote:
> > > 15 seconds feels very aggressive to me. I can think of some cases, like
> > > libvirtd automatically suspending or cleanly shutting down running VMs,
> > > that might well take longer than that. Could we not go for 30 seconds?
> > > Going all the way from 90/120 down to 15 seems pretty radical.
> > 
> > I run across this with some regularity. PackageKit is not installed on my 
> > system. What I wished was that when there is a stall shutting down, a message 
> > to the console or a dialog box explains who is holding up shutdown. If we 
> > knew who was holding things up, bugs might get filed.
> 
>   But there already is such message! First "waiting for shutdown" with
> unit name and a timer. Then, in the last phase there's also "wating for process:"
> message.

Yeah. We added printing of a lot of information in
https://github.com/systemd/systemd/commit/3889fc6fc347f0e12070f7b873d065508c8df816:

Example output:

         Stopping user@1000.service...
[  OK  ] Stopped dracut-shutdown.service.
[  OK  ] Stopped systemd-logind.service.
[  OK  ] Stopped systemd-logind.service - User Login Management.
[*     ] Job user@1000.service/stop running (2s / 2min): (1 of 2) User job slowstop.service/stop running (1s / 1min 30s)...
[***   ] Job user@1000.service/stop running (3s / 2min): (2 of 2) User job slowstop2.service/stop running (2s / 1min 30s)...
[   ***] Job user@1000.service/stop running (4s / 2min): (1 of 2) User job slowstop.service/stop running (4s / 1min 30s)...
[     *] Job user@1000.service/stop running (5s / 2min): (1 of 2) User job slowstop.service/stop running (5s / 1min 30s)...
[   ***] Job user@1000.service/stop running (6s / 2min): (2 of 2) User job slowstop2.service/stop running (6s / 1min 30s)...
[***   ] Job user@1000.service/stop running (8s / 2min): (1 of 2) User job slowstop.service/stop running (7s / 1min 30s)...
[***   ] Job user@1000.service/stop running (10s / 2min): (2 of 2) User job slowstop2.service/stop running (9s / 1min 30s)...
[  *** ] Job user@1000.service/stop running (11s / 2min): (1 of 2) User job slowstop.service/stop running (10s / 1min 30s)...
[     *] Job user@1000.service/stop running (12s / 2min): (2 of 2) User job slowstop2.service/stop running (12s / 1min 30s)...
[   ***] Job user@1000.service/stop running (13s / 2min): (1 of 2) User job slowstop.service/stop running (13s / 1min 30s)...
[***   ] Job user@1000.service/stop running (15s / 2min): (2 of 2) User job slowstop2.service/stop running (14s / 1min 30s)...
[*     ] Job user@1000.service/stop running (15s / 2min): (2 of 2) User job slowstop2.service/stop running (14s / 1min 30s)...
[***   ] Job user@1000.service/stop running (16s / 2min): User job slowstop.service/stop running (16s / 1min 30s)...
[   ***] Job user@1000.service/stop running (18s / 2min): User job slowstop.service/stop running (17s / 1min 30s)...
[     *] Job user@1000.service/stop running (19s / 2min): User job slowstop.service/stop running (18s / 1min 30s)...
[   ***] Job user@1000.service/stop running (20s / 2min): User job slowstop.service/stop running (19s / 1min 30s)...
[*     ] Job user@1000.service/stop running (22s / 2min): User job slowstop.service/stop running (22s / 1min 30s)...
[**    ] Job user@1000.service/stop running (30s / 2min): User job slowstop.service/stop running (29s / 1min 30s)...
[   ***] Job user@1000.service/stop running (32s / 2min): User job slowstop.service/stop running (31s / 1min 30s)...
[     *] Job user@1000.service/stop running (33s / 2min): User job slowstop.service/stop running (32s / 1min 30s)...
[   ***] Job user@1000.service/stop running (34s / 2min): User job slowstop.service/stop running (33s / 1min 30s)...
[**    ] Job user@1000.service/stop running (37s / 2min): User job slowstop.service/stop running (36s / 1min 30s)...
[  *** ] Job user@1000.service/stop running (41s / 2min): User job slowstop.service/stop running (41s / 1min 30s)...
[  OK  ] Stopped user@1000.service - User Manager for UID 1000.
         Stopping user-runtime-dir@1000.service - User Runtime Directory /run/user/1000...
[  OK  ] Unmounted run-user-1000.mount - /run/user/1000.
[  OK  ] Stopped user-runtime-dir@1000.service - User Runtime Directory /run/user/1000.

Futher ideas how to improve things are welcome… But I think that right now we
report enough to narrow things down to system or user service that is blocking
shutdown.

Zbyszek
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