Date: Fri, 9 Mar 2007 22:13:07 +0000 From: "Joao Barros" <joao.barros@gmail.com> To: "Ivan Voras" <ivoras@fer.hr> Cc: freebsd-current@freebsd.org, freebsd-stable@freebsd.org, Matt Jacob <mjacob@freebsd.org> Subject: Re: MFC request: QLogic 24xx FibreChannel controller Message-ID: <70e8236f0703091413o473db67fr451e3be49c44b025@mail.gmail.com> In-Reply-To: <45F1C77C.8010103@fer.hr> References: <esruhl$8s9$1@sea.gmane.org> <45F18183.7050405@FreeBSD.org> <45F182F2.10604@fer.hr> <ess83u$j2c$1@sea.gmane.org> <70e8236f0703091240q65d45300u836121454d799c64@mail.gmail.com> <45F1C77C.8010103@fer.hr>
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On 3/9/07, Ivan Voras <ivoras@fer.hr> wrote: > Joao Barros wrote: > > On 3/9/07, Ivan Voras <ivoras@fer.hr> wrote: > >> I'm not familiar with this hardware, but I'm curious why I see the one > >> test drive I assigned to it twice. I seem to recall reading somewhere a > >> discussion for Linux in which it's been mentioned that one of these > >> should be a read-write and another "read-only" device, but is this > >> correct? I can write to both drives. > > > > I'd say because you have a multipath setup, the driver being the exception. > > I guess the in house isp guru Matt Jacob can give you a better > > explanation ;) > > I don't think it's because of multipath (as far as I understand it) > because both disks are atached to isp0: > > da1 at isp0 bus 0 target 0 lun 0 > da2 at isp0 bus 0 target 1 lun 0 > > There are two FC switches, but AFAIK a multipath setup would have, for > example one disk coming from isp0 and the other from isp1, as isp0 and > isp1 are connected to two switches... > > It's entirely possible that something's ill defined in the FC management > console (I din't do it - it's another guy's responsibility :) ) You're right, I missed that detail :) You can always ask the "responsible" guy what he did, but right now I'd say you have a freebie ;) -- Joao Barros
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