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iSCSI: The Universal Storage Connection by John L. Hufferd

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11. Error Handling

Error handling and recovery are two of the more difficult processes to understand. A quick overview follows.

To the Reader

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This chapter will now go into error recovery in some depth. If you do not need this much information, skip forward to the Chapter Summary, as usual.

There are three general classes of detected errors:

  • Protocol error. As its name implies, this is generally a program error and requires restarting the session and error recovery by the SCSI layer.
  • CRC detected error. This error could have been detected on the PDU header or data segment. It can be recovered by resending the data or response PDU or by ...

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