/// <returns>Capacity in bytes</returns>
public ulong ReadCapacity(ushort LUN, out int bytesPerSector)
{
if (!m_isConnected)
{
throw new InvalidOperationException("iSCSI client is not connected");
}
SCSICommandPDU readCapacity = ClientHelper.GetReadCapacity10Command(m_session, m_connection, LUN);
SendPDU(readCapacity);
// SCSIResponsePDU with CheckCondition could be returned in case of an error
SCSIDataInPDU data = WaitForPDU(readCapacity.InitiatorTaskTag) as SCSIDataInPDU;
if (data != null && data.StatusPresent && data.Status == SCSIStatusCodeName.Good)
{
ReadCapacity10Parameter capacity = new ReadCapacity10Parameter(data.Data);
if (capacity.ReturnedLBA != 0xFFFFFFFF)
{
bytesPerSector = (int)capacity.BlockLengthInBytes;
return((capacity.ReturnedLBA + 1) * capacity.BlockLengthInBytes);
}
readCapacity = ClientHelper.GetReadCapacity16Command(m_session, m_connection, LUN);
m_clientSocket.Send(readCapacity.GetBytes());
data = WaitForPDU(readCapacity.InitiatorTaskTag) as SCSIDataInPDU;
if (data != null && data.StatusPresent && data.Status == SCSIStatusCodeName.Good)
{
ReadCapacity16Parameter capacity16 = new ReadCapacity16Parameter(data.Data);
bytesPerSector = (int)capacity16.BlockLengthInBytes;
return((capacity16.ReturnedLBA + 1) * capacity16.BlockLengthInBytes);
}
}
bytesPerSector = 0;
return(0);
}
public List <ushort> GetLUNList()
{
if (!m_isConnected)
{
throw new InvalidOperationException("iSCSI client is not connected");
}
SCSICommandPDU reportLUNs = ClientHelper.GetReportLUNsCommand(m_session, m_connection, ReportLUNsParameter.MinimumAllocationLength);
SendPDU(reportLUNs);
SCSIDataInPDU data = WaitForPDU(reportLUNs.InitiatorTaskTag) as SCSIDataInPDU;
if (data != null && data.StatusPresent && data.Status == SCSIStatusCodeName.Good)
{
uint requiredAllocationLength = ReportLUNsParameter.GetRequiredAllocationLength(data.Data);
if (requiredAllocationLength > ReportLUNsParameter.MinimumAllocationLength)
{
reportLUNs = ClientHelper.GetReportLUNsCommand(m_session, m_connection, requiredAllocationLength);
m_clientSocket.Send(reportLUNs.GetBytes());
data = WaitForPDU(reportLUNs.InitiatorTaskTag) as SCSIDataInPDU;
if (data == null || !data.StatusPresent || data.Status != SCSIStatusCodeName.Good)
{
return(null);
}
}
ReportLUNsParameter parameter = new ReportLUNsParameter(data.Data);
List <ushort> result = new List <ushort>();
foreach (LUNStructure lun in parameter.LUNList)
{
if (lun.IsSingleLevelLUN)
{
result.Add(lun);
}
}
return(result);
}
return(null);
}