Log based data replication system with disk swapping below a predetermined rate

A system for transmitting data to be replicated in a computer network, the system comprising:

• a monitor module located between an application program and a file system, the monitor module executing in one or more computer processors, wherein the monitor module is configured to monitor file system requests generated by the application program executing on a first computer, the monitor module being further configured to generate log entries indicative of file system requests comprising data management operations to be executed on the first storage device, wherein the data management operations identify at least one recoverable state of the application program;
• a buffer, wherein the buffer stores the log entries representing the data management operations, and wherein at least a plurality of the log entries in the buffer do not have an absolute file pathname;
• a pathname processor excuting in one or more computer processors, the pathname processor configured to retrieve the log entries from the buffer, process the log entries to determine an absolute file pathname associated with each log entry, and forward the processed log entries with the absolute file pathname to a second computer for replaying the log entries with the absolute file pathname on the second computer to generate replicate data on a second storage device that is a replication of the data existing on the first storage device,
• wherein the monitor module is further configured to modify the processing of the data management operations by the application program on the first computer when a rate at which the pathname processor processes the log entries that do not have an absolute file name is below a predetermined rate;
• and
• wherein the system is configured to recover the application program to the recoverable state with the data replicated on the second computer in the event the application program needs to be recovered.

A system for transmitting data to be replicated in a network environment, the system comprising:

• means for monitoring file system requests of an application program executing on a source computer and for identifying, from the file system requests, data management operations directed to data on a first storage device, wherein the data management operations identify at least one recoverable state of the application program;
• means for storing a plurality of log entries representing the data management operations, wherein at least a plurality of the log entries buffer do not have an absolute file pathname;
• means for pathname processing each of the plurality of log entries to determine an absolute file pathname associated with the plurality of log entries;
• means for transmitting each processed log entry and the associated absolute file pathname to a destination computer;
• means for replaying on the destination computer each processed log entry with the associated absolute file pathname to perform the data management operations on the destination computer to generate a replication of the data existing on the first storage device on a second storage device;
• means for disk swapping most recently received log entries from said storing means to a memory when said pathname processing falls below a predetermined rate;
• means for modifying the execution of the application program on the source computer when the log entries that do not have an absolute file pathname in the memory exceed a threshold;
• and
• means for recovering the application program on the source computer to the recoverable state with the data replicated on the destination computer in the event the application program on the source computer needs to be recovered.