cc'ing open-iscsi Scott Moseman <scmoseman@xxxxxxxxx> wrote: > So I finally got my multipath running through both the NIC and HBA > interfaces, but I'm not having any luck going through testing to > verify it's actually failing over between the connections. > > # multipath -l > mpath0 (30690a018f015191a6472441d1500f057) > [size=4 GB][features="0"][hwhandler="0"] > \_ round-robin 0 [active] > \_ 3:0:0:0 sdc 8:32 [active][ready] > \_ round-robin 0 [enabled] > \_ 1:0:1:0 sdb 8:16 [active][ready] > > I can unplug the HBA (see below) and the connection to the SAN remains. > > # multipath -l > mpath0 (30690a018f015191a6472441d1500f057) > [size=4 GB][features="0"][hwhandler="0"] > \_ round-robin 0 [active] > \_ 3:0:0:0 sdc 8:32 [active][ready] > \_ round-robin 0 [enabled] > \_ 1:0:1:0 sdb 8:16 [failed][faulty] > > But when I unplug the NIC connection, the multipath command hands, > trying to list files on the SAN partition hangs, and I'm getting these > messages: > > Nov 19 17:15:13 ems1 kernel: iscsi-sfnet:host3: Connect failed with rc > -113: No route to host > Nov 19 17:15:13 ems1 kernel: iscsi-sfnet:host3: establish_session > failed. Could not connect to target > Nov 19 17:15:13 ems1 kernel: iscsi-sfnet:host3: Waiting 10 seconds > before next login attempt > > How to troubleshoot this situation? The IO is hanging waiting for the connection to be reestablished. You may need to set ConnFailTimeout to a non-zero value as indicated in http://people.redhat.com/mchristi/iscsi/RHEL4/doc/readme Someone on the open-iscsi list may have a better suggestion. -andmike -- Michael Anderson andmike@xxxxxxxxxxxxxxxxxx -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
