ClfsGetIoStatistics function

Description

The ClfsGetIoStatistics routine returns I/O statistics for a specified CLFS log.

Parameters

plfoLog [in]

A pointer to a LOG_FILE_OBJECT structure that represents a CLFS stream. The I/O statistics will be collected for the stream's underlying log on stable storage. The caller previously obtained this pointer by calling ClfsCreateLogFile.

pvStatsBuffer [in, out]

A pointer to a CLFS_IO_STATISTICS structure that receives the I/O statistics data.

cbStatsBuffer [in]

The size, in bytes, of the buffer pointed to by pvStatsBuffer. This parameter must be at least sizeof(CLFS_IO_STATISTICS_HEADER). If this parameter is less than sizeof(CLFS_IO_STATISTICS), pvStatsBuffer will receive only a portion of the available I/O statistics.

eStatsClass [in]

This parameter is reserved for future use.

pcbStatsWritten [out, optional]

A pointer to a ULONG-typed variable that receives the number of bytes actually written to pvStatsBuffer. This parameter can be NULL.

Return value

ClfsGetIoStatistics returns STATUS_SUCCESS if it succeeds; otherwise, it returns one of the error codes defined in Ntstatus.h.

Remarks

For an explanation of CLFS concepts and terminology, see Common Log File System.

See also

ClfsCreateLogFile