Some new hardware with 9.1 does not reboot easily

[Willem Jan Withagen]

On 2013-01-17 15:26, Steven Hartland wrote:
> 
> ----- Original Message ----- From: "Willem Jan Withagen" <wjw at digiware.nl>
> To: "Julian Stecklina" <jsteckli at os.inf.tu-dresden.de>
> Cc: "Steven Hartland" <killing at multiplay.co.uk>; "Andriy Gapon"
> <avg at FreeBSD.org>; <freebsd-stable at FreeBSD.org>
> Sent: Thursday, January 17, 2013 2:11 PM
> Subject: Re: Some new hardware with 9.1 does not reboot easily
> 
> 
>> On 2013-01-17 3:08, Julian Stecklina wrote:
>>>
>>>
>>> Steven Hartland <killing at multiplay.co.uk> wrote:
>>>
>>>> ----- Original Message ----- From: "Andriy Gapon"
>>>> <avg at FreeBSD.org>
>>>>
>>>>
>>>>> on 11/01/2013 21:38 Willem Jan Withagen said the following:
>>>>>> On 2013-01-07 18:06, Julian Stecklina wrote:
>>>>>>> Has this been resolved? I still see a hang on reboot/shutdown
>>>>>>> on my
>>>> box
>>>>>>> (zfs root on USB thumb drive), but I am not sure if the
>>>>>>> problem is related.
>>>>>>
>>>>>> Could very well be be.
>>>>>>
>>>>>> I have again the same problem as I reported before with the
>>>>>> full and
>>>> new
>>>>>> 9.1 code. But did not have time yet to build a system te test
>>>>>> with.
>>>>>>
>>>>>> My other 9.1 box is my ZFS only fileserver. And I do not want
>>>>>> to
>>>> fidle
>>>>>> to much with it.
>>>>
>>>> Not sure if this has been suggested or ruled out as yet but if you
>>>> have usb enabled, you don't need to be using it, try the following
>>>> see if it helps?
>>>>
>>>> sysctl hw.usb.no_shutdown_wait=1
>>>
>>> With that sysctl set the box shuts down just fine. Thanks!
>>>
>>>>
>>>> If it does 1. Temporary fix is to pop that in /etc/sysctl.conf 2.
>>>> Worth investigating which USB component isn't dropping references
>>>> correctly.
>>>
>>> I only have an USB thumb drive and a USB soundcard attached. I tried
>>> it without the soundcard attached and would still not reset/shutdown,
>>> so that does not seem to be the problem.
>>>
>>> I attached usbconfig list output.
>>
>> Hi all,
>>
>> This is with:
>> FreeBSD zfs.digiware.nl 9.1-STABLE FreeBSD 9.1-STABLE #59 r245340:
>> Sun Jan 13 06:49:37 CET 2013
>>
>> I removed my WD USB disk, and it started to reboot just fine....
>> And as such I think it is a combination of USB storage and ZFS.
>>
>> So it could very well be a derivative of the previous problems where a
>> more complex situation in storage ended up in deadlock.
>>
>> Thanx to Steven for putting the finger in the correct hole in the
>> dike....
>> For the time being I'll just pop the sysctl into the config.
> 
> I don't "think" it will FS related, when I looked it was purely a device
> reference
> count thing.
> 
> If you have a blank or unmounted device plugged in does it still fail to
> reboot
> without that sysctl?

Interesting question....
Still havent finish building a ZFS test box.

I tested USB on the fileserver, because it would give me an actual
reboot in case of failure/shutdown....

--WjW