After setup of 40 vdisks, zoning of two switches, etc. and starting I/O I did a goodpath-test with Redhat 5.1. Everything worked fine. During running the failover test's the dm-multipather didn't handle to re-establish all paths correctly. I tried running multipathd with "-v4" option for verbose logging. And changed the line "daemon $DAEMON" with "daemon $DAEMON -v4" in /etc/init.d/multipathd file and restarted the daemon by running "/etc/init.d/multipathd restart" again. After that the failover worked fine, with and without the -v4 option. In my setup this behavior is reproducible. Could there be a connection with specifically starting the multipathd ? --------before teststart-------- QL_0 (36005076801b080fb7000000000000dac) dm-16 IBM,2145 [size=500M][features=1 queue_if_no_path][hwhandler=0] \_ round-robin 0 [prio=100][active] \_ 5:0:1:0 sdbu 68:128 [active][ready] \_ 4:0:0:0 sdci 69:96 [active][ready] \_ round-robin 0 [prio=20][enabled] \_ 5:0:0:0 sdbg 67:160 [active][ready] \_ 4:0:1:0 sdcw 70:64 [active][ready] QL_10 (36005076801b080fb7000000000000db5) dm-26 IBM,2145 [size=2.0G][features=1 queue_if_no_path][hwhandler=0] \_ round-robin 0 [prio=100][active] \_ 5:0:0:10 sdbq 68:64 [active][ready] \_ 4:0:1:10 sddg 70:224 [active][ready] \_ round-robin 0 [prio=20][enabled] \_ 5:0:1:10 sdce 69:32 [active][ready] \_ 4:0:0:10 sdcs 70:0 [active][ready] [root@x455-tic-1 ~]# Kind regards, Achim -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
