Dynamic Disk Problems!

NTDEV
1

Following “DeviceIoControl” call always FAILS for dynamic disks with an
error code: 1( Incorrect Function ) for IOCTL_SCSI_GET_ADDRESS,
IOCTL_STORAGE_GET_DEVICE_NUMBER, but the same succeeds for basics disks!

BYTE buff[2048];
DWORD cbReturnedData;
HANDLE hDevice;

hDevice = CreateFile( “\\.\H:”,
GENERIC_WRITE | GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
0,
NULL );

if (hDevice == (HANDLE)-1)
{
printf(“Attempt failed! Error number = %d\n”,GetLastError());
return;
}

PSCSI_ADDRESS pInfo = (PSCSI_ADDRESS )buff;

BOOL bResult =
DeviceIoControl( hDevice, IOCTL_SCSI_GET_ADDRESS,
//IOCTL_STORAGE_GET_DEVICE_NUMBER,
NULL,
0, // no input buffer, so pass zero
pInfo,
sizeof(buff), // output buffer
&cbReturnedData, // bytes returned
(LPOVERLAPPED) NULL ); // synchronous I/O

if(!bResult)
{
printf(“Attempt failed! Error number = %d\n”,GetLastError());
return;
}

Do I am doing something wrong? would appreciate any help.

Regards,
-Anand

2

Since a dynamic disk can span multiple physical devices, this IOCTL is
not relevant.

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of AR
Sent: Thursday, December 05, 2002 4:43 PM
To: NT Developers Interest List
Subject: [ntdev] Dynamic Disk Problems!

Following “DeviceIoControl” call always FAILS for dynamic disks with an
error code: 1( Incorrect Function ) for IOCTL_SCSI_GET_ADDRESS,
IOCTL_STORAGE_GET_DEVICE_NUMBER, but the same succeeds for basics disks!

BYTE buff[2048];
DWORD cbReturnedData;
HANDLE hDevice;

hDevice = CreateFile( “\\.\H:”,
GENERIC_WRITE | GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
0,
NULL );

if (hDevice == (HANDLE)-1)
{
printf(“Attempt failed! Error number = %d\n”,GetLastError());
return;
}

PSCSI_ADDRESS pInfo = (PSCSI_ADDRESS )buff;

BOOL bResult =
DeviceIoControl( hDevice, IOCTL_SCSI_GET_ADDRESS,
//IOCTL_STORAGE_GET_DEVICE_NUMBER,
NULL,
0, // no input buffer, so pass zero
pInfo,
sizeof(buff), // output buffer
&cbReturnedData, // bytes returned
(LPOVERLAPPED) NULL ); // synchronous I/O

if(!bResult)
{
printf(“Attempt failed! Error number = %d\n”,GetLastError());
return;
}

Do I am doing something wrong? would appreciate any help.

Regards,
-Anand

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3

Thanks for the response, makes sense. But why Microsoft does not document?
I have seen many disk/storage IOCTLS which does not work with dynamic
disks.

-Anand