private void Run()
{
var smartInfos = getSmartInfos();
if (previousSmartInfos == null || HDD.Compare(smartInfos, previousSmartInfos) == false)
{
callBack(smartInfos);
}
previousSmartInfos = smartInfos;
Task.Delay(1000 * 120, cancellationToken.Token).ContinueWith((t) => Run(), cancellationToken.Token);
}
public static Dictionary <int, HDD> getSmartInfos()
{
var dicDrives = new Dictionary <int, HDD>();
var wdSearcher = new ManagementObjectSearcher("SELECT * FROM Win32_DiskDrive");
// extract model and interface information
int iDriveIndex = 0;
foreach (ManagementObject drive in wdSearcher.Get())
{
var hdd = new HDD();
hdd.Model = drive["Model"].ToString().Trim();
hdd.Type = drive["InterfaceType"].ToString().Trim();
dicDrives.Add(iDriveIndex, hdd);
iDriveIndex++;
}
var pmsearcher = new ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMedia");
// retrieve hdd serial number
iDriveIndex = 0;
foreach (ManagementObject drive in pmsearcher.Get())
{
// because all physical media will be returned we need to exit
// after the hard drives serial info is extracted
if (iDriveIndex >= dicDrives.Count)
{
break;
}
dicDrives[iDriveIndex].Serial = drive["SerialNumber"] == null ? "None" : drive["SerialNumber"].ToString().Trim();
iDriveIndex++;
}
// get wmi access to hdd
var searcher = new ManagementObjectSearcher("Select * from Win32_DiskDrive");
searcher.Scope = new ManagementScope(@"\root\wmi");
// check if SMART reports the drive is failing
searcher.Query = new ObjectQuery("Select * from MSStorageDriver_FailurePredictStatus");
iDriveIndex = 0;
foreach (ManagementObject drive in searcher.Get())
{
dicDrives[iDriveIndex].IsOK = (bool)drive.Properties["PredictFailure"].Value == false;
iDriveIndex++;
}
// retrive attribute flags, value worste and vendor data information
searcher.Query = new ObjectQuery("Select * from MSStorageDriver_FailurePredictData");
iDriveIndex = 0;
foreach (ManagementObject data in searcher.Get())
{
Byte[] bytes = (Byte[])data.Properties["VendorSpecific"].Value;
for (int i = 0; i < 30; ++i)
{
try
{
int id = bytes[i * 12 + 2];
int flags = bytes[i * 12 + 4]; // least significant status byte, +3 most significant byte, but not used so ignored.
//bool advisory = (flags & 0x1) == 0x0;
bool failureImminent = (flags & 0x1) == 0x1;
//bool onlineDataCollection = (flags & 0x2) == 0x2;
int value = bytes[i * 12 + 5];
int worst = bytes[i * 12 + 6];
int vendordata = BitConverter.ToInt32(bytes, i * 12 + 7);
if (id == 0)
{
continue;
}
var attr = dicDrives[iDriveIndex].Attributes[id];
attr.Current = value;
attr.Worst = worst;
attr.Data = vendordata;
attr.IsOK = failureImminent == false;
}
catch
{
// given key does not exist in attribute collection (attribute not in the dictionary of attributes)
}
}
iDriveIndex++;
}
// retreive threshold values foreach attribute
searcher.Query = new ObjectQuery("Select * from MSStorageDriver_FailurePredictThresholds");
iDriveIndex = 0;
foreach (ManagementObject data in searcher.Get())
{
Byte[] bytes = (Byte[])data.Properties["VendorSpecific"].Value;
for (int i = 0; i < 30; ++i)
{
try
{
int id = bytes[i * 12 + 2];
int thresh = bytes[i * 12 + 3];
if (id == 0)
{
continue;
}
var attr = dicDrives[iDriveIndex].Attributes[id];
attr.Threshold = thresh;
}
catch
{
// given key does not exist in attribute collection (attribute not in the dictionary of attributes)
}
}
iDriveIndex++;
}
return(dicDrives);
}
