US 9,811,422 B2
Head start population of an image backup
Nathan S. Bushman, Pleasant Grove, UT (US)
Assigned to STORAGECRAFT TECHNOLOGY CORPORATION, Draper, UT (US)
Filed by STORAGECRAFT TECHNOLOGY CORPORATION, Draper, UT (US)
Filed on Apr. 20, 2017, as Appl. No. 15/492,955.
Application 15/492,955 is a continuation of application No. 14/966,433, filed on Dec. 11, 2015.
Application 14/966,433 is a continuation of application No. 14/743,486, filed on Jun. 18, 2015, granted, now 9,317,376, issued on Apr. 19, 2016.
Prior Publication US 2017/0220421 A1, Aug. 3, 2017
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 11/14 (2006.01); G06F 17/30 (2006.01)
CPC G06F 11/1451 (2013.01) [G06F 11/1464 (2013.01); G06F 17/30088 (2013.01); G06F 17/30117 (2013.01); G06F 2201/84 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for head start population of an image backup, the method comprising:
tracking blocks that are modified in a source storage between a first point in time and a second point in time;
prior to the second point in time, head start copying a first portion of the modified blocks into the image backup by intercepting a write request to the source storage that includes one of the modified blocks and head start copying the modified block included in the write request into the image backup without reading the modified block from the source storage;
activating a snapshot on the source storage at the second point in time, the snapshot representing a state of the source storage at the second point in time; and
subsequent to the second point in time, copying, from the snapshot and into the image backup, a second portion of the modified blocks that were not yet copied into the image backup by the second point in time.