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DEVICE_MANAGE_DATA_SET_ATTRIBUTES structure (winioctl.h)

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Input structure for the IOCTL_STORAGE_MANAGE_DATA_SET_ATTRIBUTES control code.

Syntax

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

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

Requirement Value
Minimum supported client Windows 7
Minimum supported server Windows Server 2008 R2
Header winioctl.h (include Windows.h)

See also

DEVICE_DATA_SET_RANGE

Device Management Structures

IOCTL_STORAGE_MANAGE_DATA_SET_ATTRIBUTES