Hi, I have quick question. I am trying to configure device mapper for my FC array (on my Linux box). I have passed all the arguments from /etc/multipath.conf(like vendor, model etc ..). Discovery seems fine. But, failover is not working. I am seeing the following error. "device-mapper: multipath: Cannot failover device because scsi_dh_rdac was not loaded." Is it required to add vendor id and model id anywhere else to support this device? Thanks Babu Moger -----Original Message----- From: dm-devel-bounces@xxxxxxxxxx [mailto:dm-devel-bounces@xxxxxxxxxx] On Behalf Of Moger, Babu Sent: Wednesday, October 01, 2008 4:48 PM To: device-mapper development; linux-scsi@xxxxxxxxxxxxxxx Subject: failover does not work with rdac device handler Hi All, I am new to the device mapper and just thought I will set-up device mapper on our arrays. I am using the latest kernel 2.6.27.rc6 and got the latest multipath-tools from upstream. I updated /etc/multipath.conf with all the information (vendor, product, hardware_handler, prio etc ...). Note that my device is not part of rdac_dev_list. Discovery worked fine. "multipath -ll" displays all the information. I can see that it is picking up rdac device handler. But I found that for some reason failover/failback is not working. I am seeing following these messages. "device-mapper: multipath: Cannot failover device because scsi_dh_rdac was not loaded." I can see that scsi_dh_rdac driver is already loaded. I did some more investigation. Found that failover works fine if I add vendor, model in rdac_dev_list (in file scsi_dh_rdac.c). My question - is it required to add all the supported vendor and model names in rdac_dev_list? Appreciate your responses. Thanks Babu Moger -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
