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DEVICE_MANAGE_DATA_SET_ATTRIBUTES structure

Input structure for the IOCTL_STORAGE_MANAGE_DATA_SET_ATTRIBUTES control code.

Syntax


typedef struct _DEVICE_MANAGE_DATA_SET_ATTRIBUTES {
  DWORD                             Size;
  DEVICE_DATA_MANAGEMENT_SET_ACTION Action;
  DWORD                             Flags;
  DWORD                             ParameterBlockOffset;
  DWORD                             ParameterBlockLength;
  DWORD                             DataSetRangesOffset;
  DWORD                             DataSetRangesLength;
} DEVICE_MANAGE_DATA_SET_ATTRIBUTES, *PDEVICE_MANAGE_DATA_SET_ATTRIBUTES;

Members

Size

Size of this data structure. Must be set to sizeof(DEVICE_MANAGE_DATA_SET_ATTRIBUTES).

Action

A valid value of type DEVICE_DATA_MANAGEMENT_SET_ACTION.

Value	Meaning
DeviceDsmAction_Trim 1	A trim action is performed. This value is not supported for user-mode applications.
DeviceDsmAction_Notification 2 \| DeviceDsmActionFlag_NonDestructive (0x80000002)	A notification action is performed. The additional parameters are in a DEVICE_DSM_NOTIFICATION_PARAMETERS structure. The DeviceDsmActionFlag_NonDestructive (0x80000000) is a bit flag to indicate to the driver stack that this operation is non-destructive.
DeviceDsmAction_OffloadRead 3 \| DeviceDsmActionFlag_NonDestructive (0x80000003)	An offload read action is performed. The additional parameters are in a DEVICE_DSM_OFFLOAD_READ_PARAMETERS structure. The DeviceDsmActionFlag_NonDestructive (0x80000000) is a bit flag to indicate to the driver stack that this operation is non-destructive. Windows 7 and Windows Server 2008 R2: This value is not supported before Windows 8 and Windows Server 2012.
DeviceDsmAction_OffloadWrite 4	An offload write action is performed. The additional parameters are in a DEVICE_DSM_OFFLOAD_WRITE_PARAMETERS structure. Windows 7 and Windows Server 2008 R2: This value is not supported before Windows 8 and Windows Server 2012.
DeviceDsmAction_Allocation 5 \| DeviceDsmActionFlag_NonDestructive (0x80000005)	An allocation bitmap is retrieved for the first data set range specified. The DeviceDsmActionFlag_NonDestructive (0x80000000) is a bit flag to indicate to the driver stack that this operation is non-destructive. Windows 7 and Windows Server 2008 R2: This value is not supported before Windows 8 and Windows Server 2012.
DeviceDsmAction_Repair 6 \| DeviceDsmActionFlag_NonDestructive (0x80000006)	A repair action is performed. The additional parameters are in a DEVICE_DATA_SET_REPAIR_PARAMETERS structure. The DeviceDsmActionFlag_NonDestructive (0x80000000) is a bit flag to indicate to the driver stack that this operation is non-destructive. Windows 7 and Windows Server 2008 R2: This value is not supported before Windows 8 and Windows Server 2012.
DeviceDsmAction_Scrub 7 \| DeviceDsmActionFlag_NonDestructive (0x80000007)	A scrub action is performed. The DeviceDsmActionFlag_NonDestructive (0x80000000) is a bit flag to indicate to the driver stack that this operation is non-destructive. Windows 7 and Windows Server 2008 R2: This value is not supported before Windows 8 and Windows Server 2012.
DeviceDsmAction_Resiliency 8 \| DeviceDsmActionFlag_NonDestructive (0x80000008)	A resiliency action is performed. The DeviceDsmActionFlag_NonDestructive (0x80000000) is a bit flag to indicate to the driver stack that this operation is non-destructive. Windows 7 and Windows Server 2008 R2: This value is not supported before Windows 8 and Windows Server 2012.

Flags

Flags for the actions.

Value	Meaning
DEVICE_DSM_FLAG_TRIM_NOT_FS_ALLOCATED 0x80000000	If set then the described ranges are not allocated by a file system. This flag is specific to the DeviceDsmAction_Trim action.
DEVICE_DSM_FLAG_RESILIENCY_START_RESYNC 0x10000000	Starts a resync operation on the storage device. This flag is specific to the DeviceDsmAction_Resiliency action.
DEVICE_DSM_FLAG_RESILIENCY_START_LOAD_BALANCING 0x20000000	Starts a load balancing operation on the storage device. This flag is specific to the DeviceDsmAction_Resiliency action.

ParameterBlockOffset

Byte offset to the start of the parameter block stored in the buffer contiguous to this structure. Must be aligned to the corresponding structure alignment. A value of zero indicates there is no parameter block and the ParameterBlockLength member must also be zero.

ParameterBlockLength

Length of the parameter block, in bytes. A value of zero indicates there is no parameter block and the ParameterBlockOffset member must also be zero.

DataSetRangesOffset

Byte offset to the start of the data set ranges block made up of an array of DEVICE_DATA_SET_RANGE structures stored in the buffer contiguous to this structure. Must be aligned to the DEVICE_DATA_SET_RANGE structure alignment. A value of zero indicates there is no data set ranges block and the DataSetRangesLength member must also be zero.

DataSetRangesLength

Length of the data set ranges block, in bytes. A value of zero indicates there is no data set ranges block and the DataSetRangesOffset member must also be zero.

Remarks

The total length of the buffer that contains this structure must be at least (sizeof(DEVICE_MANAGE_DATA_SET_ATTRIBUTES) + ParameterBlockLength + DataSetRangesLength).

Requirements

Minimum supported client	Windows 7
Minimum supported server	Windows Server 2008 R2
Header	WinIoCtl.h (include Windows.h)

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