Re: Shutdown -r under -current hangs on RPi3

From: Mark Millard <marklmi_at_yahoo.com>
Date: Sat, 23 Sep 2023 18:34:41 UTC 
On Sep 23, 2023, at 11:26, Mark Millard <marklmi@yahoo.com> wrote:

> On Sep 23, 2023, at 08:52, bob prohaska <fbsd@www.zefox.net> wrote:
> 
>> From time to time, but seemingly more often lately, a Pi3
>> get stuck during shutdown -r. The machine is running -current
>> from a mechanical usb hard disk through a powered hub. No micro
>> SD card is used. Once up it's quite stable.
>> 
>> The console reports
>> 
>> login: Sep 23 08:20:37 pelorus shutdown[224]: reboot by bob:
>> Stopping sshd.
>> Waiting for PIDS: 1063.
>> Stopping cron.
>> Waiting for PIDS: 1073.
>> Stopping powerd.
>> Waiting for PIDS: 1002.
>> Stopping devd.
>> Waiting for PIDS: 752.
>> Writing entropy file: .
>> Writing early boot entropy file: .
>> .
>> Terminated
>> Sep 23 08:20:43 pelorus syslogd: exiting on signal 15
>> Waiting (max 60 seconds) for system process `vnlru' to stop... done
>> 
>> Waiting (max 60 seconds) for system process `syncer' to stop... Syncing disks, vnodes remaining... 4 0 0 0 done
>> All buffers synced.
>> Uptime: 23h31m45s
>> Khelp module "ertt" can't unload until its refcount drops from 1 to 0.
> 
> I've gotten the above message on rare occasions over the years on
> the amd64 system (ThreadRipper 1950X). (But reboots and shutdowns
> are not frequent for this system normally.)
> 
> There is a recent: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=271677
> 
> It is not just your context with the issue.
> 
>> Resetting system ...
>> 
>> At that point all activity ceases. The only clue I can recognize is that
>> the red power LED remains off, as if FreeBSD never relinquishes control
>> to the Pi firmware, which turns the LED back on at powerup. Power-cycling
>> results in a normal reboot.
> 

The system might produce more messages about the
shutdown activity if it has been booted via:

boot -v

This might narrow down the context some for someone
familiar with the messages --if oyu are lucky enough
to eventually get an example from a boot -v context.


===
Mark Millard
marklmi at yahoo.com