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Reconstruction Environment

The system must determine on which machine the rule should be run. Remembering the machine that created the file is useful but not sufficient. First, the original machine may be down or heavily load at reconstruction time. Second, the original machine's environment may have changed since the file was created. Before a reconstruction rule is saved, MBFS collects the architecture and operating system of the machine and stores them with the reconstruction rule. At reconstruction time, the system searches for machines satisfying both architecture and OS, and chooses one of them on which to run the reconstruction rule. If no machine is found, an error message is sent to the owner of the file saying the file could not be reconstructed.

Todd Anderson