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US 2014/0195752 A1Published application
Efficient copying between storage devices
AssigneeRed Hat Israel, Ltd.
InventorsAyal Baron, Saggi Y. Mizrahi
Life of this patent
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AssigneeRed Hat Israel, Ltd.
InventorsAyal Baron, Saggi Y. Mizrahi
Estimating the term…
A system and method are disclosed for efficiently copy a disk image between storage devices. In accordance with one example, a computer system issues a request to create on a first storage device a snapshot of a first disk image that is stored on the first storage device. The computer system then issues a request to create on the first storage device a second disk image based on the snapshot, and copies the snapshot on to a second storage device. The computer system issues a request to create on the second storage device a third disk image based on the snapshot. The computer system then issues a request to compute a difference between the second disk image and the snapshot, and the difference is overwritten on to the third disk image.
A method comprising:
An apparatus comprising:
A non-transitory computer readable storage medium, having instructions stored therein, which when executed, cause a computer system to perform operations comprising:
The non-transitory computer readable storage medium of claim 15 wherein the difference is computed by the first storage device.
The non-transitory computer readable storage medium of claim 18, wherein when the second storage device does not support native snapshotting, the copying of the snapshot on to the second storage device comprises creating a structure on the second storage device.
Dependencies are inferred from the claim text.