| CPC G06F 16/128 (2019.01) [G06F 16/125 (2019.01); G06F 16/2246 (2019.01)] | 20 Claims |
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1. A computer-implemented method, comprising:
storing a first hierarchical data structure defining an active view of a filesystem, the first hierarchical data structure comprising a first root node storing a strong reference to a first internal node in the first hierarchical data structure;
receiving a request to create a snapshot of the filesystem defined by the first hierarchical data structure;
creating a second hierarchical data structure defining a new active view of the filesystem, the second hierarchical data structure comprising a second root node created by copying the first root node; and
changing the strong reference to the first internal node in the first hierarchical data structure in the second root node to a weak reference to the first internal node in the first hierarchical data structure.
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