Patent ID: 7613698
Filing Date: 2009-11-03
Classification: G06F,Y10S

Abstract:
1. In a computing environment, a system comprising: a processor; and a computer-readable storage medium having stored thereon a plurality of service modules executable by the processor, the plurality of service modules including: a multiple-level logging service, the multi-level logging service module including: a decision-making service module for determining whether higher-level logged operations actually occurred, wherein the decision-making service module is adapted to determine that lower-level logged operations have successfully committed, wherein lower-level logged operations commit subsequent to successfully committing a related higher-level logged operation, and wherein determining that lower-level logged operations have successfully committed necessarily indicates to the decision-making service module that previous higher-level logged operations actually occurred; and wherein the second log contains a first log sequence number identifying the higher-level operation associated with the log entry and wherein the first file has an associated second log sequence number identifying the last committed higher-level operation; and wherein the first log sequence number being less than or equal to the second log sequence necessarily indicates that the higher-level operation associated with the first log sequence number occurred prior to the low level operation being committed.