Date: Wed, 19 Jun 2013 16:10:22 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: =?iso-8859-1?Q?Dennis_K=F6gel?= <dk@neveragain.de> Cc: freebsd-stable@freebsd.org, Ronald Klop <ronald-freebsd8@klop.yi.org> Subject: Re: Weird I/O hangs (9.1R, arcsas, interrupt spikes on uhci0) Message-ID: <4A59B81311B944C3A740BD65455E3E60@multiplay.co.uk> References: <C2AA9591-CBF4-4956-BABE-08BD8994FF8C@neveragain.de> <op.wyxg11zc8527sy@ronaldradial.versatec.local> <FD9290D8-1A12-4F28-816B-94EFB4516DA4@neveragain.de> <EA2D201C731C46CB8F7BE4972847A53B@multiplay.co.uk> <B199EA9B-6E1C-4B1A-A8F3-4574FF61AEC0@neveragain.de> <15E6A1D4AB1D43D49C1DA02EAF463126@multiplay.co.uk> <27EED7A0-AB0B-43B5-8B7F-B424852DBD65@neveragain.de>
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----- Original Message -----
From: "Dennis Kögel" <dk@neveragain.de>
> > I'm not familar with that model of the areca but have you tried
> > with the standard OS driver or does it not support that card?
>
> The ARC1320 (non-raid) unfortunately isn't supported by the in-tree driver.
>
> > Also when you see hangs can you access the disk directly or not
> > e.g. dd if=/dev/da0 of=/dev/null bs=1m count=10 ?
>
> Interesting idea. The dd then hangs right until everything else resumes as well.
>
> ^T during hang says: load: 12.39 cmd: dd 7847 [physrd] 6.36r 0.00u 0.00s 0% 1632k
So it sounds like your seeing device level hangs which indicates
either a driver, HW, controller FW or disk level issue.
You might want to try adding a seperate disk (different type)
to the controller which isn't used and perform the same test to
try and eliminate disk's as the source of the issue.
Also see what "gstat -d" shows during this? Do you see a big spike
of activity either side?
Regards
Steve
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