Virtual machine disk image backup using block allocation area
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United States of America Patent
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Oct 18, 2016
Grant Date -
Sep 18, 2014
app pub date -
Mar 6, 2014
filing date -
Mar 18, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to a method for managing virtual machine image disk usage comprising a disk image emulator for a virtual machine provided by a hypervisor, comprising the steps of providing at least a first disk image comprising a sequence of data blocks for accumulating write operations to the first disk image, providing at least a second disk image comprising a sequence of data blocks for permanently storing disk image data, and providing a disk cleaning process for transferring disk image data from the first disk image to the second disk image and deleting unused data blocks in the first and/or the second disk image.
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