Date: Wed, 17 Jul 2013 17:29:04 +0200 From: "Julian H. Stacey" <jhs@berklix.com> To: Maurizio Vairani <maurizio.vairani@cloverinformatica.it> Cc: freebsd-fs@freebsd.org, freebsd-stable@freebsd.org, Ronald Klop <ronald-freebsd8@klop.yi.org> Subject: Re: [SOLVED] Re: Shutdown problem with an USB memory stick as ZFS cache device Message-ID: <201307171529.r6HFT4EK063849@fire.js.berklix.net> In-Reply-To: Your message "Wed, 17 Jul 2013 12:28:23 %2B0200." <51E671C7.50409@cloverinformatica.it>
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Maurizio Vairani wrote: > On 17/07/2013 11:50, Ronald Klop wrote: > > On Wed, 17 Jul 2013 10:27:09 +0200, Maurizio Vairani > > <maurizio.vairani@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@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. > Thank you Ronald it works ! > > In /boot/loader.conf added the line > hw.usb.no_shutdown_wait=1 > > Maurizio I wonder (from ignorance as I dont use ZFS yet), if that merely masks the symptom or cures the fault ? Presumably one should use a ZFS command to disassociate whatever might have the cache open ? (in case something might need to be written out from cache, if it was a writeable cache ?) I too had a USB shutdown problem (non ZFS, now solved) & several people made useful comments on shutdown scripts etc, so I'm cross referencing: http://lists.freebsd.org/pipermail/freebsd-mobile/2013-July/012803.html Cheers, Julian -- Julian Stacey, BSD Unix Linux C Sys Eng Consultant, Munich http://berklix.com Reply below not above, like a play script. Indent old text with "> ". Send plain text. No quoted-printable, HTML, base64, multipart/alternative.
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