Description of problem: The sun CSM100_R_FC device is not listed as a supported rdac device. It is currently listed upstream. Version-Release number of selected component (if applicable): Fix attempted on 2.6.18-166 How reproducible: Every time. Steps to Reproduce: 1. Configure multipath to use new dh_rdac 2. Wait 3. Fail device Actual results: d 7:0:0:100: rdac Dettached sd 8:0:0:100: rdac Dettached device-mapper: multipath: Cannot failover device because scsi_dh_rdac was not loaded. device-mapper: multipath: Failing path 8:32. device-mapper: multipath: Cannot failover device because scsi_dh_rdac was not loaded. device-mapper: multipath: Failing path 8:48. device-mapper: multipath: Cannot failover device because scsi_dh_rdac was not loaded. device-mapper: multipath: Failing path 8:32. device-mapper: multipath: Cannot failover device because scsi_dh_rdac was not loaded. device-mapper: multipath: Failing path 8:48. device-mapper: multipath: Cannot failover device because scsi_dh_rdac was not loaded. device-mapper: multipath: Failing path 8:32. Buffer I/O error on device dm-10, logical block 1545 lost page write due to I/O error on dm-10 Aborting journal on device dm-10. Buffer I/O error on device dm-10, logical block 1545 lost page write due to I/O error on dm-10 Expected results: Sep 29 13:46:56 cerberus kernel: device-mapper: multipath: Using scsi_dh module scsi_dh_rdac for failover/failback and device management. Sep 29 13:46:56 cerberus multipathd: sanvol: load table [0 103473152 multipath 1 queue_if_no_path 1 rdac 2 1 round-robin 0 1 1 8:32 10000 round-robin 0 1 1 8:48 100 Sep 29 13:46:56 cerberus multipathd: dm-9: add map (uevent) Sep 29 13:46:56 cerberus multipathd: dm-9: devmap already registered Sep 29 13:47:06 cerberus multipathd: 8:32: reinstated Sep 29 13:47:06 cerberus multipathd: 8:48: reinstated Sep 29 13:48:27 cerberus kernel: sd 7:0:0:100: rdac: AVT mode detected Sep 29 13:48:41 cerberus multipathd: 8:32: reinstated Sep 29 13:48:41 cerberus multipathd: 8:48: reinstated Sep 29 13:50:55 cerberus multipathd: dm-10: add map (uevent) Additional information: There are other SANS that are mentioned in the upstream configuration that should work, although these have not been backported as I have not had customer verification on if it works.
Created attachment 363002 [details] enable support for the aforementioned sun device.
*** This bug has been marked as a duplicate of bug 524335 ***