Your running into the problem of the "active/passive" link as you stated. If you are using Qlogic FibreChannel cards, qlogic offers drivers on their website for this. I have a whitepaper I've written on this topic, please contact me if you would like a copy. We currently have many 2.6 Kernel Linux machines running exclusively off the SAN, with true failover support. Thanks, Tom Callahan -----Original Message----- From: linux-raid-owner@xxxxxxxxxxxxxxx To: linux-raid@xxxxxxxxxxxxxxx Sent: 9/2/2005 2:38 AM Subject: Re: question regarding multipath & Linux 2.6 On Thu, Sep 01, 2005 at 02:51:44PM -0400, Jim Faulkner wrote: > >Hello, > >Recently my department had a SAN installed, and I am in the process of >setting up one of the first Linux machines connected to it. The machine >is running Red Hat Enterprise AS4 (x86_64), which uses Linux kernel >version 2.6.9-11.ELsmp. giving more info about the infamous SAN would help :) > >The SAN shows up twice in the kernel, as /dev/sdb and /dev/sdc. /dev/sdb >is inaccessible (I get a bunch of "Buffer I/O error on device sdb" kernel >errors), but /dev/sdc works fine. According to the administrator of the it probably is a cheapo storage with an Active/Passive storage controller, you cannot use md to handle those. >He told me to use PowerPath, but I'd rather not have to reinstall or it is a long time i don't see powerpath on linux, but i am in favour of ditching proprietary multipath solutions in favour of free ones. > what you want is multipath-tools http://christophe.varoqui.free.fr/ RH4 should already include a multipath-tools rpm. Regards, Luca -- Luca Berra -- bluca@xxxxxxxxxx Communication Media & Services S.r.l. /"\ \ / ASCII RIBBON CAMPAIGN X AGAINST HTML MAIL / \ - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
