Minimum-delay recoverable disk control system using checkpoints

Details Minimum-delay recoverable disk control system using checkpoints Minimum-delay recoverable disk control system using checkpoints

1996-04-15

1998-05-12

Swann, Tod R.

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

711111, 364DIG1, G06K 1216

Patent

active

057522685

ABSTRACT:
A recoverable disk control system for a computer system that includes a checkpoint operation. When an operating system generates a write request to a disk device, the write request and the associated write data are stored into a nonvolatile memory. The operating system is immediately notified as if the write request were completed. The writing the data to the disk device is postponed until the next checkpoint. At the end of the next checkpoint execution, the write request is scheduled for execution. In that case a fault occurs before the write request is scheduled, the write request is discarded.

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