freebsd stable - Jul 2013 - Shutdown problem with an USB memory stick as ZFS cache device

Hi all,


on a Compaq Presario laptop I have just installed the latest stable


#uname -a

FreeBSD presario 9.2-PRERELEASE FreeBSD 9.2-PRERELEASE #0: Tue Jul 16 
16:32:39 CEST 2013     root at presario:/usr/obj/usr/src/sys/GENERIC  amd64


For speed up the compilation I have added to the pool, tank0,  a SanDisk 
memory stick as cache device with the command:


# zpool add tank0 cache /dev/da0


But when I shutdown the laptop the process will halt with this screen shot:


http://www.dump-it.fr/freebsd-screen-shot/2f9169f18c7c77e52e873580f9c2d4bf.jpg.html


and I need to press the power button for more than 4 seconds to switch 
off the laptop.

The problem is always reproducible.


Regards

Maurizio

I think this is expected as your screenshot shows the USB has being
disconnected, so you actually lost the cache device on the shutdown.
Maybe you should implement a shutdown script that removes the USB cache from the
pool before the shutdown command is issued :)

Best regards,
Ivailo Tanusheff

-----Original Message-----
From: owner-freebsd-stable at freebsd.org [mailto:owner-freebsd-stable at
freebsd.org] On Behalf Of Maurizio Vairani
Sent: Wednesday, July 17, 2013 11:27 AM
To: freebsd-stable at FreeBSD.org; freebsd-fs at freebsd.org
Subject: Shutdown problem with an USB memory stick as ZFS cache device

Hi all,


on a Compaq Presario laptop I have just installed the latest stable


#uname -a

FreeBSD presario 9.2-PRERELEASE FreeBSD 9.2-PRERELEASE #0: Tue Jul 16 
16:32:39 CEST 2013     root at presario:/usr/obj/usr/src/sys/GENERIC  amd64


For speed up the compilation I have added to the pool, tank0,  a SanDisk memory
stick as cache device with the command:


# zpool add tank0 cache /dev/da0


But when I shutdown the laptop the process will halt with this screen shot:


http://www.dump-it.fr/freebsd-screen-shot/2f9169f18c7c77e52e873580f9c2d4bf.jpg.html


and I need to press the power button for more than 4 seconds to switch 
off the laptop.

The problem is always reproducible.


Regards

Maurizio

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On Wed, 17 Jul 2013 10:27:09 +0200, Maurizio Vairani  
<maurizio.vairani at cloverinformatica.it> wrote:
> Hi all,
>
>
> on a Compaq Presario laptop I have just installed the latest stable
>
>
> #uname -a
>
> FreeBSD presario 9.2-PRERELEASE FreeBSD 9.2-PRERELEASE #0: Tue Jul 16  
> 16:32:39 CEST 2013     root at presario:/usr/obj/usr/src/sys/GENERIC  amd64
>
>
> For speed up the compilation I have added to the pool, tank0,  a SanDisk  
> memory stick as cache device with the command:
>
>
> # zpool add tank0 cache /dev/da0
>
>
> But when I shutdown the laptop the process will halt with this screen  
> shot:
>
>
>
http://www.dump-it.fr/freebsd-screen-shot/2f9169f18c7c77e52e873580f9c2d4bf.jpg.html
>
>
> and I need to press the power button for more than 4 seconds to switch  
> off the laptop.
>
> The problem is always reproducible.
Does sysctl hw.usb.no_shutdown_wait=1 help?

Ronald.