Shutdown problem with an USB memory stick as ZFS cache device

[Ivailo Tanusheff]

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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