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AssigneeAvailigent, Inc.
InventorsMichael Neary, Ashwani Wason, Shvetima Gulati, Fabrice Ferval
Estimating the term…
Incremental single and multiprocess checkpointing and restoration is described, which is transparent in that the application program need not be modified, re-compiled, or re-linked to gain the benefits of the invention. The processes subject to checkpointing can be either single or multi-threaded. The method includes incremental page-boundary checkpointing, as well as storage checkpointing of data files associated with applications to ensure correct restoration without the need to restore files for other application programs. Incremental and full checkpoints are asynchronously merged to ensure proper operation while reducing checkpointing delay. By way of example a user-level programming library is described for loading into the address space of the application in conjunction with a loadable kernel module (LKM) or device driver used to capture and restore process state on behalf of the application. These techniques are particularly well suited for use with high-availability (HA) protection programming.
A method of checkpointing an object, process or other component of an application program, comprising:
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A checkpointing computer program, comprising a set of instructions stored on a media accessible by a computer and executable on said computer, wherein said computer program performs the steps comprising:
A checkpointing method in a computer system, comprising:
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A checkpointing computer program, comprising a set of instructions stored on a media accessible by a computer and executable on said computer, wherein said computer program performs the steps comprising:
A checkpointing method in a computer system, comprising:
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A checkpointing computer program, comprising a set of instructions stored on a media accessible by a computer and executable on said computer, wherein said computer program performs the steps comprising:
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Dependencies are inferred from the claim text.