SMI-S Block Server Performance Subprofile

This profile provides I/O statistics for various CIM_StorageExtent subclasses.

OpenLMI-Storage implements the Block Server Performance Subprofile with these adjustments:


Even though properties in LMI_BlockStorageStatisticalData are 64-bit, they are tracked as 32-bit on systems with 32-bit kernel. They can wrap pretty quickly on modern hardware.

For example, on i686 with iSCSI drive on 10Gb/s link, the KBytesRead counter can wrap in approximately 27 minutes.

With 64-bit kernels, these counters are tracked in 64-bits and they wrap once in a few years.