On Wed, Jun 04, 2008 at 05:14:57PM -0400, Gustavo Riveros wrote: > Hi dm-developers, > > I'm having problem with multipathing device-mapper with my linux server, > but this was resolved by Thread "multipathing flip flopping on Sun 6140" > very well > (http://www.redhat.com/archives/dm-devel/2007-August/msg00066.html) That multipath.conf entry seems to be missing some key elements: device { vendor "SUN" product "CSM200_R" product_blacklist "Universal Xport" features "1 queue_if_no_path" path_checker rdac hardware_handler "1 rdac" path_grouping_policy group_by_prio prio "rdac" failback immediate } > > The configuration is the same: > > X4600 Server > 2 HBA's Emulex > SAN STK6140 > > but in dmesg i have the following error message: > > Buffer I/0 error on device sdf, logical block 0 > end_request: I/0 error, dev sdf, sector 0 > > Did you know the error message? That would imply you are using the 'readsector0' checker program instead of the 'rdac' one. The multipath.conf above assumes that this controller is indeed an RDAC one. I don't have one so the configuration might be completly wrong. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
