ONTAP FC client can not access storage LUN
Applies to
- ONTAP FCP
Issue
- FC Hosts/Clients can not access LUN but other Hosts can
- Hosts with access is impacted by performance problems
- Microsoft Hyper-V system log reports Event ID 153
- Microsoft Hyper-V device manager reports storage adapter HBA port in unknown status with "This device is not functioning correctly"
- ONTAP event logs reports every few minutes FC IO error state=5 and AEN 0x8048 error
- ONTAP ASUP and monitoring indicate FC port SFP transmit optical power went down by half
ONTAP Event Log example:
Cluster::*> event log show -message-name *fcp*
Time Node Severity Event
------------------- ---------------- ------------- ---------------------------
fcp.io.status: STIO Adapter:0h AEN 0x8048 (RECV_ERROR) MboxStatus1 0xfffe MboxStatus2 0x2
fcp.io.status: STIO Adapter:0h, found hung cmd:0xfffff808f9339380(state=5, flags=0x0, ctio_sent=1/1,RecvExAddr=0x125a30, OX_ID=0x6a7, RX_ID=0xffff,SID=0x10200, Cmd[2A], req_q_free:69)
fcp.io.status: STIO Adapter:0h, found hung cmd:0xfffff808f92d4250(state=5, flags=0x0, ctio_sent=1/1,RecvExAddr=0x128ac0, OX_ID=0x24f, RX_ID=0xffff,SID=0x10200, Cmd[2A], req_q_free:8123)
fcp.io.status: STIO Adapter:0h AEN 0x8048 (RECV_ERROR) MboxStatus1 0xfffe MboxStatus2 0x2
fcp.io.status: STIO Adapter:0h, found hung cmd:0xfffff808f92d4250(state=5, flags=0x0, ctio_sent=1/1,RecvExAddr=0x128ac0, OX_ID=0x24f, RX_ID=0xffff,SID=0x10200, Cmd[2A], req_q_free:8123)
fcp.io.status: STIO Adapter:0h AEN 0x8048 (RECV_ERROR) MboxStatus1 0xfffe MboxStatus2 0x2
fcp.io.status: STIO Adapter:0h, found hung cmd:0xfffff808f9339380(state=5, flags=0x0, ctio_sent=1/1,RecvExAddr=0x125a30, OX_ID=0x6a7, RX_ID=0xffff,SID=0x10200, Cmd[2A], req_q_free:69)
fcp.io.status: STIO Adapter:0h AEN 0x8048 (RECV_ERROR) MboxStatus1 0xfffe MboxStatus2 0x2
fcp.io.status: STIO Adapter:0h, found hung cmd:0xfffff808f91e4340(state=5, flags=0x0, ctio_sent=1/1,RecvExAddr=0x121b60, OX_ID=0x1c6, RX_ID=0xffff,SID=0x10200, Cmd[2A], req_q_free:7532)FCP Adapter example:
Cluster::*>network fcp adapter show -node <node_name> -fields sfp-rx-power, sfp-tx-power, switch-port
Rx Power: 553.5 (uWatts)
Tx Power: 215.8 (uWatts)
Cluster::*> network fcp adapter show -node <node_name> -adapter 0h
Adapter: 0h
Description: Fibre Channel Target Adapter 0h (QLogic 8324 (8362), rev. 2, 16G)
Received Optical Power: 553.5 (uWatts)
SFP Transmitted Optical Power: 215.8 (uWatts)