From mboxrd@z Thu Jan 1 00:00:00 1970 From: Philipp Niemann Subject: Re: Multipathing hints request Date: Fri, 22 Jul 2005 14:09:55 +0200 Message-ID: <20050722120955.GL4240@pan.dimdi.de> References: <20050721143110.GD4240@pan.dimdi.de> <1121970687.19015.78.camel@zezette> <20050722083722.GJ4240@pan.dimdi.de> <20050722095828.GA13294@averon.dyndns.org> Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20050722095828.GA13294@averon.dyndns.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: dm-devel@redhat.com List-Id: dm-devel.ids Well, almost at it. On Fri, 22.07.2005-11:58:28 +0200, Christophe Varoqui wrote: > hardware_handler and features params must be in the devices {} section, not in multipaths {}. I changed the settings in /etc/multipath.conf again, as you advised. Here is it: # Begin of /etc/multipath.conf defaults { multipath_tool "/sbin/multipath -v 0 -S" udev_dir /dev polling_interval 10 default_selector "round-robin 0" default_path_grouping_policy failover default_getuid_callout "/sbin/scsi_id -g -u -s /block/%n" default_prio_callout "/bin/false" default_features "0" } multipaths { multipath { wwid 360060160200161a037f90d75dfca84f7 alias 416L3 path_grouping_policy failover path_selector "round-robin 0" } } devices { device { vendor "DGC " product "RAID 5 " path_grouping_policy group_by_serial getuid_callout "/sbin/scsi_id -g -u -s /block/%n" path_checker emc_clariion path_selector "round-robin 0" features "0" hardware_handler "1 emc" } } # End of /etc/multipath.conf I figured out that the vendor value must be exactly 8 characters long. > Also, pgpolicy is best set to group_by_serial with Clariion hw. > You'll see it produce same grouping than failover in your case. Hm, doesn't look the same here. It again leaves me with only one priority group. So I stick to failover for now. What different features are available? I just managed to freeze my network conn (at least, haven't checked the host yet) by adding "1 queue_if_no_path" as used with the compaq entry in the examples. I didn't manage to get failover to work, yet. Am I correct in assuming that the multipathd daemon is only needed for path recovery? Because I have problems getting that one to react to signals properly. Right, gonna check what happend to the machine. CU, Philipp -- Philipp Niemann DIMDI Abteilung D / AG D4 Peripherie / UNIX-Systembetreuer Waisenhausgasse 36-38a Tel. : 0221/4724-281 50676 Koeln