DataDirect Networks (DDN) SFA 10K/12K controller generating SCSI errors

Troubleshooting

Problem

Traffic run against disk pools generate SCSI errors when the DataDirect Networks (DDN) SFA 10K/12K controller disk pools are in the process of being initialized.

Resolving The Problem

Source

RETAIN tip: H206332

Symptom

Traffic run against disk pools generate SCSI errors when the DataDirect Networks (DDN) SFA 10K/12K controller disk pools are in the process of being initialized.

Error examples:

	sd 6:0:3:5: [sdbg] Unhandled sense code sd 6:0:3:5: [sdbg] Result: hostbyte=invalid driverbyte=DRIVER_SENSE sd 6:0:3:5: [sdbg] Sense Key : Medium Error [current] sd 6:0:3:5: [sdbg] Add. Sense: Unrecovered read error sd 6:0:3:5: [sdbg] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00 end_request: critical target error, dev sdbg, sector 0

Affected configurations

The system can be any of the following IBM servers:

IBM System Cluster 1350, type 1410, any model

This tip is not software specific.

This tip is not option specific.

The system has the symptom described above.

Solution

This is a permanent restriction, there will be no solution.

Workaround

The issue can be avoided by ensuring that disk pool initialization jobs are complete before utilizing the storage.

Document Location

Worldwide

Operating System

System x Integrated Solutions:Operating system independent / None

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Tips

DataDirect Networks (DDN) SFA 10K/12K controller generating SCSI errors - IBM System Cluster 1350 (1410)