CREATE_USN_JOURNAL_DATA structure (winioctl.h)
Contains information that describes an update sequence number (USN) change journal.
Syntax
typedef struct {
DWORDLONG MaximumSize;
DWORDLONG AllocationDelta;
} CREATE_USN_JOURNAL_DATA, *PCREATE_USN_JOURNAL_DATA;
Members
MaximumSize
The target maximum size that the NTFS file system allocates for the change journal, in bytes.
The change journal can grow larger than this value, but it is then truncated at the next NTFS file system checkpoint to less than this value.
AllocationDelta
The size of memory allocation that is added to the end and removed from the beginning of the change journal, in bytes.
The change journal can grow to more than the sum of the values of MaximumSize and AllocationDelta before being trimmed.
Remarks
For more information, see Creating, Modifying, and Deleting a Change Journal.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Header | winioctl.h (include Windows.h) |