From owner-freebsd-geom@FreeBSD.ORG  Thu Nov 10 13:48:21 2005
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To: babkin@users.sf.net
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Thu, 10 Nov 2005 07:06:26 CST."
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Date: Thu, 10 Nov 2005 14:48:15 +0100
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Cc: Danny Howard <dannyman@toldme.com>, freebsd-hackers@freebsd.org,
	freebsd-geom@freebsd.org
Subject: Re: GEOM for multipath? How? 
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In message <32275093.1131627986609.JavaMail.root@vms170.mailsrvcs.net>, Sergey 
Babkin writes:
>>From: Danny Howard <dannyman@toldme.com>
>
>>Hey ... yes, I recall there being issues with the QLogic drivers ... I
>>wonder if anyone has given the mpt drivers a shot?  I was able to speak
>>with an engineer at Engenio (now owned by LSI) and she said there were
>>some issues with the QLogic dual-port cards that were interesting to
>>her, but the LSI dual-port cards behaved differently ...
>
>QLogic worked fine in multi-path configuration with UnixWare.
>I think LSI and Adaptec did too. The only trick is to make sure 
>that the IRQs of the cards are not shared between the cards or with
>any other device.

I suspect it is not the card as much as the driver, but I am not sure.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.