Examples of org.jscsi.parser.tmf.TaskManagementFunctionResponseParser

org.jscsi.parser.tmf.TaskManagementFunctionResponseParser

This class parses a Task Management Function Response message defined in the iSCSI Standard (RFC3720).

Task Management Actions on Task Sets

The execution of ABORT TASK SET and CLEAR TASK SET Task Management function requests consists of the following sequence of events in the specified order on each of the entities.

The initiator:

Issues ABORT TASK SET/CLEAR TASK SET request.
Continues to respond to each target transfer tag received for the affected task set.
Receives any responses for the tasks in the affected task set (may process them as usual because they are guaranteed to be valid).
Receives the task set management response, thus concluding all the tasks in the affected task set.

The target:

Receives the ABORT TASK SET/CLEAR TASK SET request.
Waits for all target transfer tags to be responded to and for all affected tasks in the task set to be received.
Propagates the command to and receives the response from the target SCSI layer.
Takes note of last-sent StatSN on each of the connections in the iSCSI sessions (one or more) sharing the affected task set, and waits for acknowledgement of each StatSN (may solicit for acknowledgement by way of a NOP-In). If some tasks originate from non-iSCSI I_T_L nexi then the means by which the target insures that all affected tasks have returned their status to the initiator are defined by the specific protocol.
Sends the task set management response to the issuing initiator.

TotalAHSLength and DataSegmentLength

For this PDU TotalAHSLength and DataSegmentLength MUST be 0. @author Volker Wildi

            case SNACK_REQUEST :
                return new SNACKRequestParser(protocolDataUnit);
            case SCSI_TM_REQUEST :
                return new TaskManagementFunctionRequestParser(protocolDataUnit);
            case SCSI_TM_RESPONSE :
                return new TaskManagementFunctionResponseParser(protocolDataUnit);
            case SCSI_COMMAND :
                return new SCSICommandParser(protocolDataUnit);
            case SCSI_RESPONSE :
                return new SCSIResponseParser(protocolDataUnit);
            default :

    }


    public static final ProtocolDataUnit createTMResponsePdu (TaskManagementFunctionResponseParser.ResponseCode response, int initiatorTaskTag) {
        final ProtocolDataUnit pdu = factory.create(false, true, OperationCode.SCSI_TM_RESPONSE, "None", "None");
        final BasicHeaderSegment bhs = pdu.getBasicHeaderSegment();
        final TaskManagementFunctionResponseParser parser = (TaskManagementFunctionResponseParser) bhs.getParser();
        parser.setResponse(response);
        bhs.setInitiatorTaskTag(initiatorTaskTag);
        return (pdu);
    }

Examples of org.jscsi.parser.tmf.TaskManagementFunctionResponseParser

Task Management Actions on Task Sets

TotalAHSLength and DataSegmentLength

Related Classes of org.jscsi.parser.tmf.TaskManagementFunctionResponseParser