Hi all, I get these errors in my log and I just had an interuption in our production traffic: Nov 11 16:01:09 storage kernel: iscsi_trgt: Abort Task (01) issued on tid:1 lun:0 by sid:4503599664923136 (Unknown Task) Nov 11 16:16:21 storage kernel: printk: 21 messages suppressed. Nov 11 16:16:21 storage kernel: multipathd[2246]: segfault at ffffffff005564d8 rip 00002b3302f58969 rsp 00007fffa8292f10 error 4 Nov 11 16:17:11 storage kernel: iSCSI Enterprise Target Software - version 0.4.15 Nov 11 16:17:11 storage kernel: iscsi_trgt: Registered io type fileio Nov 11 16:17:11 storage kernel: iscsi_trgt: Registered io type blockio Nov 11 16:17:11 storage kernel: iscsi_trgt: Registered io type nullio Nov 11 16:18:54 storage kernel: multipathd[6895]: segfault at 000000000000000a rip 00002b251f24394f rsp 00007fff8bfaa730 error 4 Nov 11 16:18:55 storage kernel: device-mapper: multipath rdac: using RDAC command with timeout 6000 Nov 11 16:18:55 storage last message repeated 3 times Nov 11 16:19:39 storage kernel: iSCSI Enterprise Target Software - version 0.4.15 Nov 11 16:19:39 storage kernel: iscsi_trgt: Registered io type fileio Nov 11 16:19:39 storage kernel: iscsi_trgt: Registered io type blockio Nov 11 16:19:39 storage kernel: iscsi_trgt: Registered io type nullio And: Nov 14 00:21:24 storage kernel: mptbase: ioc0: LogInfo(0x31170000): Originator={PL}, Code={IO Device Missing Delay Retry}, SubCode(0x0000) Nov 14 00:21:29 storage last message repeated 9 times Nov 14 00:21:29 storage kernel: sd 1:0:0:0: [sdb] Result: hostbyte=DID_BUS_BUSY driverbyte=DRIVER_OK,SUGGEST_OK Nov 14 00:21:29 storage kernel: end_request: I/O error, dev sdb, sector 269463016 Nov 14 00:21:29 storage kernel: device-mapper: multipath: Failing path 8:16. Nov 14 00:21:29 storage kernel: sd 1:0:0:0: [sdb] <4>device-mapper: multipath: Failing path 8:64. Nov 14 00:21:29 storage kernel: Result: hostbyte=DID_BUS_BUSY driverbyte=DRIVER_OK,SUGGEST_OK Nov 14 00:21:29 storage kernel: end_request: I/O error, dev sdb, sector 283090968 Nov 14 00:21:29 storage kernel: sd 1:0:0:0: [sdb] Result: hostbyte=DID_BUS_BUSY driverbyte=DRIVER_OK,SUGGEST_OK Nov 14 00:21:29 storage kernel: end_request: I/O error, dev sdb, sector 172519528 Nov 14 00:21:29 storage kernel: sd 1:0:0:0: [sdb] Result: hostbyte=DID_BUS_BUSY driverbyte=DRIVER_OK,SUGGEST_OK Nov 14 00:21:29 storage kernel: end_request: I/O error, dev sdb, sector 78335920 Nov 14 00:21:29 storage kernel: sd 1:0:0:0: [sdb] Result: hostbyte=DID_BUS_BUSY driverbyte=DRIVER_OK,SUGGEST_OK Nov 14 00:21:29 storage kernel: end_request: I/O error, dev sdb, sector 337302112 Nov 14 00:21:29 storage kernel: sd 1:0:0:0: [sdb] Result: hostbyte=DID_BUS_BUSY driverbyte=DRIVER_OK,SUGGEST_OK Nov 14 00:21:29 storage kernel: end_request: I/O error, dev sdb, sector 351580640 Nov 14 00:21:29 storage kernel: sd 1:0:0:0: [sdb] Result: hostbyte=DID_BUS_BUSY driverbyte=DRIVER_OK,SUGGEST_OK Nov 14 00:21:29 storage kernel: end_request: I/O error, dev sdb, sector 303461376 Nov 14 00:21:29 storage kernel: sd 1:0:0:0: [sdb] Result: hostbyte=DID_BUS_BUSY driverbyte=DRIVER_OK,SUGGEST_OK Nov 14 00:21:29 storage kernel: end_request: I/O error, dev sdb, sector 310074128 Nov 14 00:21:29 storage kernel: device-mapper: multipath rdac: queueing MODE_SELECT command on 8:80 Nov 14 00:21:39 storage kernel: mptbase: ioc0: LogInfo(0x31170000): Originator={PL}, Code={IO Device Missing Delay Retry}, SubCode(0x0000) Nov 14 00:21:39 storage kernel: device-mapper: multipath: Failing path 8:48. Nov 14 00:21:52 storage kernel: mptbase: ioc0: LogInfo(0x31170000): Originator={PL}, Code={IO Device Missing Delay Retry}, SubCode(0x0000) Nov 14 00:21:52 storage kernel: device-mapper: multipath: Failing path 8:32. Nov 14 00:21:55 storage kernel: mptbase: ioc0: LogInfo(0x31170000): Originator={PL}, Code={IO Device Missing Delay Retry}, SubCode(0x0000) Nov 14 00:21:59 storage last message repeated 2 times Nov 14 00:22:02 storage kernel: iscsi_trgt: Abort Task (01) issued on tid:1 lun:0 by sid:844425001239040 (Unknown Task) Nov 14 00:22:10 storage kernel: mptbase: ioc0: LogInfo(0x31170000): Originator={PL}, Code={IO Device Missing Delay Retry}, SubCode(0x0000) Nov 14 00:22:29 storage last message repeated 3 times Nov 14 00:23:33 storage kernel: device-mapper: multipath rdac: queueing MODE_SELECT command on 8:16 Nov 14 00:23:33 storage kernel: device-mapper: multipath rdac: MODE_SELECT failed on 8:16 with sense 0x63f0e Nov 14 00:23:33 storage kernel: device-mapper: multipath: Failing path 8:16. Nov 14 00:24:06 storage kernel: device-mapper: multipath rdac: queueing MODE_SELECT command on 8:16 Nov 14 00:24:06 storage kernel: device-mapper: multipath rdac: MODE_SELECT failed on 8:16 with sense 0x62904 Nov 14 00:24:06 storage kernel: device-mapper: multipath: Failing path 8:16. Nov 14 00:24:38 storage kernel: device-mapper: multipath rdac: queueing MODE_SELECT command on 8:16 Could anyone tell me what is wrong? I didn't had these errors when using RDAC without the hardwarehandler en with kernel 2.6.22.2 Hope someone can help me with this and tell me how serious this is! Sander -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel