On Sunday, November 26, 2006 8:27 AM, Petteri Heinonen wrote > I have a system with Qlogic QLA2312 HBAs. System is running RHEL 4u4: > > [root@cpn-0 etc]# uname -a > Linux cpn-0.chas1A.ucs2.net 2.6.9-42.ELsmp #1 SMP Wed Jul 12 > 23:27:17 EDT 2006 i686 i686 i386 GNU/Linux > [root@cpn-0 etc]# rpm -qa | grep device > device-mapper-1.02.07-4.0.RHEL4 > device-mapper-multipath-0.4.5-18.1.RHEL4 > [root@cpn-0 etc]# > > Storage is EMC Cx500. Multipath.conf is at the end of the > mail. I have tested the system by running I/O directly to > multipath device file, e.g. like this: > > dd if=/dev/mpath/dm-0 of=/dev/null count=10000000 > > Now, when I pull the cable to cause path change, dd usually > stops in the middle, and gives error message indicating I/O > error. Any suggestions? > The CLARiiON should only be configured with a dm-multipath path grouping policy of "group_by_prio". Using a no_path_retry value of "fail" may prevent a CLARiiON ucode from being updated in an application transparent manner. Should set CLARiiON features to "1 queue_if_no_path". -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
