RHEL suddenly stopped detecting IBM Tape device.

Issue

• RHEL suddenly stopped detecting IBM Tape device.
• Following errors are present in /var/log/messages

Oct 12 10:53:23 localhost kernel: lin_tape: IBMtape0-----10773 driver_byte 00, host_byte 07, msg_byte 00, status_byte 00
Oct 12 10:53:53 localhost kernel: rport-1:0-2: blocked FC remote port time out: removing target and saving binding
Oct 12 10:53:53 localhost kernel: lin_tape 1:0:0:0: rejecting I/O to offline device
Oct 12 10:53:53 localhost kernel: lpfc 0000:1b:00.1: 1:(0):0203 Devloss timeout on WWPN 20:02:00:0e:11:15:53:5d NPort x011700 Data: x100 x5 x0
Oct 12 10:53:53 localhost kernel: lin_tape: IBMtape0-----10773 tape_modesense_page failed: -5
Oct 12 10:53:53 localhost kernel: lin_tape: IBMtape0 removed.
Oct 12 10:53:53 localhost kernel: lin_tape: changer_open unable to get the device inquiry data.
Oct 12 10:53:53 localhost kernel: lin_tape: IBMchanger0 removed.
Oct 12 10:54:23 localhost kernel: lpfc 0000:1b:00.1: 1:(0):2756 LOGO failure DID:011700 Status:x3/x2
Oct 12 10:55:23 localhost kernel: lpfc 0000:1b:00.1: 1:(0):2753 PLOGI failure DID:011700 Status:x3/x2
Oct 12 10:56:22 localhost kernel: INFO: task dsmserv:16060 blocked for more than 120 seconds.
Oct 12 10:56:22 localhost kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct 12 10:56:22 localhost kernel: ffff880c0921f858 0000000000000082 0000000000000000 ffffffffa0098bbb
Oct 12 10:56:22 localhost kernel: ffff880c751b05f8 0000000000000000 ffff880671312000 0000000000000020
Oct 12 10:56:22 localhost kernel: ffff880c751b05f8 ffff880c0921ffd8 000000000000fb88 ffff880c751b05f8
Oct 12 10:56:22 localhost kernel: Call Trace:
Oct 12 10:56:22 localhost kernel: [<ffffffffa0098bbb>] ? lpfc_queuecommand+0x4fb/0x750 [lpfc]
Oct 12 10:56:22 localhost kernel: [<ffffffff8150f035>] schedule_timeout+0x215/0x2e0
Oct 12 10:56:22 localhost kernel: [<ffffffff812793c7>] ? kobject_put+0x27/0x60
Oct 12 10:56:22 localhost kernel: [<ffffffff8135aa67>] ? put_device+0x17/0x20
Oct 12 10:56:22 localhost kernel: [<ffffffff8150ecb3>] wait_for_common+0x123/0x180
Oct 12 10:56:22 localhost kernel: [<ffffffff81063990>] ? default_wake_function+0x0/0x20
Oct 12 10:56:22 localhost kernel: [<ffffffff8150edcd>] wait_for_completion+0x1d/0x20
Oct 12 10:56:22 localhost kernel: [<ffffffff81262c6c>] blk_execute_rq+0x8c/0xf0
Oct 12 10:56:22 localhost kernel: [<ffffffff8125dbbd>] ? __blk_put_request+0x7d/0xd0
Oct 12 10:56:22 localhost kernel: [<ffffffff8125efa6>] ? blk_get_request+0x46/0xa0
Oct 12 10:56:22 localhost kernel: [<ffffffffa03f4dae>] lin_tape_blk_rq+0x3fe/0x560 [lin_tape]
Oct 12 10:56:22 localhost kernel: [<ffffffffa03f4f58>] tape_execute_scsi_command+0x48/0xc0 [lin_tape]
Oct 12 10:56:22 localhost kernel: [<ffffffff8104c678>] ? flush_tlb_others_ipi+0x128/0x130
Oct 12 10:56:22 localhost kernel: [<ffffffffa04094d0>] changer_send_scsi_io+0x130/0x280 [lin_tape]
Oct 12 10:56:22 localhost kernel: [<ffffffffa040965d>] changer_send_scsi_cmd+0x3d/0x150 [lin_tape]
Oct 12 10:56:22 localhost kernel: [<ffffffffa040a25a>] changer_move_medium+0xfa/0x160 [lin_tape]
Oct 12 10:56:22 localhost kernel: [<ffffffffa03e6d4a>] ? changer_wait_and_set_busy+0xda/0x270 [lin_tape]
Oct 12 10:56:22 localhost kernel: [<ffffffffa04106f5>] changer_lbioc_move_medium+0x35/0x60 [lin_tape]
Oct 12 10:56:22 localhost kernel: [<ffffffffa03e6c13>] chgioc_exe+0xc3/0x120 [lin_tape]
Oct 12 10:56:22 localhost kernel: [<ffffffffa03e835e>] lin_tape_changer_ioctl+0x5fe/0x1710 [lin_tape]
Oct 12 10:56:22 localhost kernel: [<ffffffffa04106c0>] ? changer_lbioc_move_medium+0x0/0x60 [lin_tape]
Oct 12 10:56:22 localhost kernel: [<ffffffffa03d7ac7>] lin_tape_ioctl_changer+0xf7/0x1d0 [lin_tape]
Oct 12 10:56:22 localhost kernel: [<ffffffffa03d82f3>] lin_tape_ioctl+0x63/0x100 [lin_tape]
Oct 12 10:56:22 localhost kernel: [<ffffffff8119537c>] vfs_ioctl+0x7c/0xa0
Oct 12 10:56:22 localhost kernel: [<ffffffff811954c4>] do_vfs_ioctl+0x84/0x580
Oct 12 10:56:22 localhost kernel: [<ffffffff81187063>] ? sys_newfstat+0x33/0x40
Oct 12 10:56:22 localhost kernel: [<ffffffff81195a41>] sys_ioctl+0x81/0xa0
Oct 12 10:56:22 localhost kernel: [<ffffffff8100b072>] system_call_fastpath+0x16/0x1b