From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bernd Zeimetz Subject: Re: Multipath and SAN Fabric failover Date: Thu, 07 Sep 2006 20:09:38 +0200 Message-ID: <45006062.6020800@bzed.de> References: <20060907133943.4aa92481@localhost> Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20060907133943.4aa92481@localhost> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: device-mapper development List-Id: dm-devel.ids Heya, I think you should just try an empty multipath.conf, only put the blacklist in. The EMC CX needs pp_emc as prio callout for example. The defaults within multipath should just work. Also make sure your failovermode and arraycommpath are both set to 1. A few hints are mentioned on http://christophe.varoqui.free.fr/wiki/wakka.php?wiki=TestedEnvironments Please fill in if you find something that's missing there. Best regards, Bernd Zeimetz John Little wrote: > Hi all, > > I am trying to setup our server so that we have fabric failover from > the san. However my file sytem comes up read-only when I pull a cable > for testing. > > I am using the following: > SLES 10 > multipath-tools-0.4.6-25.8 > q-logic 2342 dual port hba > emc cx600 san > (4) McData DS-24 switches (2 for fabric a and 2 for fabric b) > > > > /etc/multipath.conf has the following entries: > > xen2:~ # grep -v "#" /etc/multipath.conf > defaults { > udev_dir /dev > polling_interval 10 > selector "round-robin 0" > getuid_callout "/sbin/scsi_id -g -u -s /block/%n" > prio_callout /bin/true > failback immediate > } > devnode_blacklist { > device { > vendor SEAGATE > product ST973401LSUN72G > } > } > multipaths { > multipath { > wwid 360060160f06109004352b218eb51da11 > alias capsprod > path_grouping_policy failover > path_checker readsector0 > path_selector "round-robin 0" > failback immediate > } > } > > Can someone point me in the right direction to get this resolved? > > Best regards, > John Little, Network Systems > Hendricks Regional Health > http://hendrickshospital.org > > -- > dm-devel mailing list > dm-devel@redhat.com > https://www.redhat.com/mailman/listinfo/dm-devel > >