Connected an Oracle Axiom storage array to a CentOS 5.9 x86_64 server.<br />
<br />
Steps<br />
@ 1.Created lun on the axiom storage array & mapped them to the host<br />
@ 2.After that did a Axiom CU power off to test path failover.<br />
@ 3.After some time traffic properly shifted to the Fibre Channel non-optimized paths However found multipathd block traces on the host as below.<br />
<br />
<br />
## Snip of the log.<br />
@ .<br />
@ *********************************<br />
@ .<br />
@ Mar 28 20:12:17 CenTOS-5 kernel: Result: hostbyte=DID_NO_CONNECT<br />
@ driverbyte=DRIVER_OK,SUGGEST_OK<br />
@ Mar 28 20:15:14 CenTOS-5 kernel: INFO: task multipathd:2550 blocked for more<br />
@ than 120 seconds.<br />
@ Mar 28 20:15:14 CenTOS-5 kernel: "echo 0 ><br />
@ /proc/sys/kernel/hung_task_timeout_secs" disables this message.<br />
@ Mar 28 20:15:14 CenTOS-5 kernel: multipathd D 0000000000000000 0 2550<br />
@ 1 2551 2533 (NOTLB)<br />
@ Mar 28 20:15:14 CenTOS-5 kernel: ffff810075a57a28 0000000000000082<br />
@ ffff8100632d5b40 ffff81007e1044f8<br />
@ Mar 28 20:15:14 CenTOS-5 kernel: ffff81007e1044f8 0000000000000001<br />
@ ffff81007c0717a0 ffff810063e4a820<br />
@ Mar 28 20:15:14 CenTOS-5 kernel: 0000016bce1c68c6 000000000002a0c9<br />
@ ffff81007c071988 00000000635a9968<br />
@ Mar 28 20:15:14 CenTOS-5 kernel: Call Trace:<br />
@ Mar 28 20:15:14 CenTOS-5 kernel: [<ffffffff8014a6e7>]<br />
@ elv_next_request+0x168/0x178<br />
@ Mar 28 20:15:14 CenTOS-5 kernel: [<ffffffff80063171>]<br />
@ wait_for_completion+0x79/0xa2<br />
@ Mar 28 20:15:14 CenTOS-5 kernel: [<ffffffff8008f34a>]<br />
@ default_wake_function+0x0/0xe<br />
@ Mar 28 20:15:14 CenTOS-5 kernel: [<ffffffff8014c79e>]<br />
@ blk_execute_rq_nowait+0x7e/0x92<br />
@ Mar 28 20:15:14 CenTOS-5 kernel: [<ffffffff8014c84a>]<br />
@ blk_execute_rq+0x98/0xc0<br />
@ Mar 28 20:15:14 CenTOS-5 kernel: [<ffffffff80029257>]<br />
@ get_request_wait+0x2a/0x130<br />
@ Mar 28 20:15:14 CenTOS-5 kernel: [<ffffffff8014fe4e>] sg_io+0x258/0x356<br />
@ Mar 28 20:15:14 CenTOS-5 kernel: [<ffffffff801503d3>]<br />
@ scsi_cmd_ioctl+0x1d2/0x3b5<br />
@ Mar 28 20:15:15 CenTOS-5 kernel: [<ffffffff8002cb6c>]<br />
@ dummy_inode_permission+0x0/0x3<br />
@ Mar 28 20:15:15 CenTOS-5 kernel: [<ffffffff8000d57f>] dput+0x2c/0x114<br />
@ Mar 28 20:15:15 CenTOS-5 kernel: [<ffffffff880a90a5>]<br />
@ :sd_mod:sd_ioctl+0xa3/0xd2<br />
@ Mar 28 20:15:15 CenTOS-5 kernel: [<ffffffff8014de94>]<br />
@ blkdev_driver_ioctl+0x5d/0x72<br />
@ Mar 28 20:15:15 CenTOS-5 kernel: [<ffffffff8014e4e5>]<br />
@ blkdev_ioctl+0x63c/0x697<br />
@ Mar 28 20:15:15 CenTOS-5 kernel: [<ffffffff8015a9db>] snprintf+0x44/0x4c<br />
@ Mar 28 20:15:15 CenTOS-5 kernel: [<ffffffff8000f484>]<br />
@ __alloc_pages+0x78/0x308<br />
@ Mar 28 20:15:15 CenTOS-5 kernel: [<ffffffff80113bfa>]<br />
@ sysfs_open_file+0x0/0x1e9<br />
@ Mar 28 20:15:15 CenTOS-5 kernel: [<ffffffff800e8dab>] block_ioctl+0x1b/0x1f<br />
@ Mar 28 20:15:15 CenTOS-5 kernel: [<ffffffff8004247e>] do_ioctl+0x21/0x6b<br />
@ Mar 28 20:15:15 CenTOS-5 kernel: [<ffffffff800304da>] vfs_ioctl+0x457/0x4b9<br />
@ Mar 28 20:15:15 CenTOS-5 kernel: [<ffffffff8000d590>] dput+0x3d/0x114<br />
@ Mar 28 20:15:15 CenTOS-5 kernel: [<ffffffff80012d27>] __fput+0x191/0x1bd<br />
@ Mar 28 20:15:15 CenTOS-5 kernel: [<ffffffff8004c882>] sys_ioctl+0x59/0x78<br />
@ Mar 28 20:15:16 CenTOS-5 kernel: [<ffffffff8005d116>] system_call+0x7e/0x83<br />
@ Mar 28 20:15:16 CenTOS-5 kernel:<br />
@ Mar 28 20:17:14 CenTOS-5 kernel: INFO: task multipathd:2550 blocked for more<br />
@ than 120 seconds.<br />
@ Mar 28 20:17:14 CenTOS-5 kernel: "echo 0 ><br />
@ /proc/sys/kernel/hung_task_timeout_secs" disables this message.<br />
@ Mar 28 20:17:14 CenTOS-5 kernel: multipathd D 0000000000000000 0 2550<br />
@ 1 2551 2533 (NOTLB)<br />
@ Mar 28 20:17:14 CenTOS-5 kernel: ffff810075a57a28 0000000000000082<br />
@ ffff8100632d5b40 ffff81007e1044f8<br />
@ Mar 28 20:17:14 CenTOS-5 kernel: ffff81007e1044f8 0000000000000001<br />
@ ffff81007c0717a0 ffff810063e4a820<br />
@ Mar 28 20:17:14 CenTOS-5 kernel: 0000016bce1c68c6 000000000002a0c9<br />
@ ffff81007c071988 00000000635a9968<br />
@ Mar 28 20:17:14 CenTOS-5 kernel: Call Trace:<br />
@ Mar 28 20:17:14 CenTOS-5 kernel: [<ffffffff8014a6e7>]<br />
@ elv_next_request+0x168/0x178<br />
@ Mar 28 20:17:14 CenTOS-5 kernel: [<ffffffff80063171>]<br />
@ wait_for_completion+0x79/0xa2<br />
@ Mar 28 20:17:14 CenTOS-5 kernel: [<ffffffff8008f34a>]<br />
@ default_wake_function+0x0/0xe<br />
@ Mar 28 20:17:14 CenTOS-5 kernel: [<ffffffff8014c79e>]<br />
@ blk_execute_rq_nowait+0x7e/0x92<br />
@ Mar 28 20:17:14 CenTOS-5 kernel: [<ffffffff8014c84a>]<br />
@ blk_execute_rq+0x98/0xc0<br />
@ Mar 28 20:17:14 CenTOS-5 kernel: [<ffffffff80029257>]<br />
@ get_request_wait+0x2a/0x130<br />
@ Mar 28 20:17:14 CenTOS-5 kernel: [<ffffffff8014fe4e>] sg_io+0x258/0x356<br />
@ Mar 28 20:17:15 CenTOS-5 kernel: [<ffffffff801503d3>]<br />
@ scsi_cmd_ioctl+0x1d2/0x3b5<br />
@ Mar 28 20:17:15 CenTOS-5 kernel: [<ffffffff8002cb6c>]<br />
@ dummy_inode_permission+0x0/0x3<br />
@ Mar 28 20:17:15 CenTOS-5 kernel: [<ffffffff8000d57f>] dput+0x2c/0x114<br />
@ Mar 28 20:17:15 CenTOS-5 kernel: [<ffffffff880a90a5>]<br />
@ :sd_mod:sd_ioctl+0xa3/0xd2<br />
@ Mar 28 20:17:15 CenTOS-5 kernel: [<ffffffff8014de94>]<br />
@ blkdev_driver_ioctl+0x5d/0x72<br />
@ Mar 28 20:17:15 CenTOS-5 kernel: [<ffffffff8014e4e5>]<br />
@ blkdev_ioctl+0x63c/0x697<br />
@ Mar 28 20:17:15 CenTOS-5 kernel: [<ffffffff8015a9db>] snprintf+0x44/0x4c<br />
@ Mar 28 20:17:16 CenTOS-5 kernel: [<ffffffff8000f484>]<br />
@ __alloc_pages+0x78/0x308<br />
@ Mar 28 20:17:16 CenTOS-5 kernel: [<ffffffff80113bfa>]<br />
@ sysfs_open_file+0x0/0x1e9<br />
@ Mar 28 20:17:16 CenTOS-5 kernel: [<ffffffff800e8dab>] block_ioctl+0x1b/0x1f<br />
@ Mar 28 20:17:16 CenTOS-5 kernel: [<ffffffff8004247e>] do_ioctl+0x21/0x6b<br />
@ Mar 28 20:17:16 CenTOS-5 kernel: [<ffffffff800304da>] vfs_ioctl+0x457/0x4b9<br />
@ Mar 28 20:17:16 CenTOS-5 kernel: [<ffffffff8000d590>] dput+0x3d/0x114<br />
@ Mar 28 20:17:16 CenTOS-5 kernel: [<ffffffff80012d27>] __fput+0x191/0x1bd<br />
@ Mar 28 20:17:16 CenTOS-5 kernel: [<ffffffff8004c882>] sys_ioctl+0x59/0x78<br />
@ Mar 28 20:17:16 CenTOS-5 kernel: [<ffffffff8005d116>] system_call+0x7e/0x83<br />
@ Mar 28 20:17:16 CenTOS-5 kernel:<br />
@ Mar 28 20:19:14 CenTOS-5 kernel: INFO: task multipathd:2550 blocked for more<br />
@ than 120 seconds.<br />
@ Mar 28 20:19:14 CenTOS-5 kernel: "echo 0 ><br />
@ /proc/sys/kernel/hung_task_timeout_secs" disables this message.<br />
@ Mar 28 20:19:14 CenTOS-5 kernel: multipathd D 0000000000000000 0 2550<br />
@ 1 2551 2533 (NOTLB)<br />
@ Mar 28 20:19:14 CenTOS-5 kernel: ffff810075a57a28 0000000000000082<br />
@ ffff8100632d5b40 ffff81007e1044f8<br />
@ Mar 28 20:19:14 CenTOS-5 kernel: ffff81007e1044f8 0000000000000001<br />
@ ffff81007c0717a0 ffff810063e4a820<br />
@ Mar 28 20:19:14 CenTOS-5 kernel: 0000016bce1c68c6 000000000002a0c9<br />
@ ffff81007c071988 00000000635a9968<br />
@ Mar 28 20:19:14 CenTOS-5 kernel: Call Trace:<br />
@ Mar 28 20:19:14 CenTOS-5 kernel: [<ffffffff8014a6e7>]<br />
@ elv_next_request+0x168/0x178<br />
@ Mar 28 20:19:14 CenTOS-5 kernel: [<ffffffff80063171>]<br />
@ wait_for_completion+0x79/0xa2<br />
@ Mar 28 20:19:14 CenTOS-5 kernel: [<ffffffff8008f34a>]<br />
@ default_wake_function+0x0/0xe<br />
@ Mar 28 20:19:14 CenTOS-5 kernel: [<ffffffff8014c79e>]<br />
@ blk_execute_rq_nowait+0x7e/0x92<br />
@ Mar 28 20:19:14 CenTOS-5 kernel: [<ffffffff8014c84a>]<br />
@ blk_execute_rq+0x98/0xc0<br />
@ Mar 28 20:19:14 CenTOS-5 kernel: [<ffffffff80029257>]<br />
@ get_request_wait+0x2a/0x130<br />
@ Mar 28 20:19:14 CenTOS-5 kernel: [<ffffffff8014fe4e>] sg_io+0x258/0x356<br />
@ Mar 28 20:19:14 CenTOS-5 kernel: [<ffffffff801503d3>]<br />
@ scsi_cmd_ioctl+0x1d2/0x3b5<br />
@ Mar 28 20:19:15 CenTOS-5 kernel: [<ffffffff8002cb6c>]<br />
@ dummy_inode_permission+0x0/0x3<br />
@ Mar 28 20:19:15 CenTOS-5 kernel: [<ffffffff8000d57f>] dput+0x2c/0x114<br />
@ Mar 28 20:19:15 CenTOS-5 kernel: [<ffffffff880a90a5>]<br />
@ :sd_mod:sd_ioctl+0xa3/0xd2<br />
@ Mar 28 20:19:15 CenTOS-5 kernel: [<ffffffff8014de94>]<br />
@ blkdev_driver_ioctl+0x5d/0x72<br />
@ Mar 28 20:19:15 CenTOS-5 kernel: [<ffffffff8014e4e5>]<br />
@ blkdev_ioctl+0x63c/0x697<br />
@ Mar 28 20:19:15 CenTOS-5 kernel: [<ffffffff8015a9db>] snprintf+0x44/0x4c<br />
@ Mar 28 20:19:15 CenTOS-5 kernel: [<ffffffff8000f484>]<br />
@ __alloc_pages+0x78/0x308<br />
@ Mar 28 20:19:15 CenTOS-5 kernel: [<ffffffff80113bfa>]<br />
@ sysfs_open_file+0x0/0x1e9<br />
@ Mar 28 20:19:16 CenTOS-5 kernel: [<ffffffff800e8dab>] block_ioctl+0x1b/0x1f<br />
@ Mar 28 20:19:16 CenTOS-5 kernel: [<ffffffff8004247e>] do_ioctl+0x21/0x6b<br />
@ Mar 28 20:19:16 CenTOS-5 kernel: [<ffffffff800304da>] vfs_ioctl+0x457/0x4b9<br />
@ Mar 28 20:19:16 CenTOS-5 kernel: [<ffffffff8000d590>] dput+0x3d/0x114<br />
@ Mar 28 20:19:16 CenTOS-5 kernel: [<ffffffff80012d27>] __fput+0x191/0x1bd<br />
@ Mar 28 20:19:17 CenTOS-5 kernel: [<ffffffff8004c882>] sys_ioctl+0x59/0x78<br />
@ Mar 28 20:19:17 CenTOS-5 kernel: [<ffffffff8005d116>] system_call+0x7e/0x83<br />
@ Mar 28 20:19:17 CenTOS-5 kernel:
↧