Unverified50% confidenceFactExact time
Copy-on-Write is the key design idea behind the Fork mechanism: a forked Drive initially retains only lightweight references pointing to the source data, and only when a Fork actually modifies a file are the changed data blocks copied.
1
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50%
Confidence
Long-term
Relevance
10/15/2026
First Seen
Sources
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Related Claims
UnverifiedCopy-on-Write technology does not immediately copy all data when creating a replica; instead, it allows the new replica to share the same underlying storage pages as the source data, copying a storage page only when a write operation occurs.70% similarUnverifiedfork VS Code让Cursor能够深度修改编辑器内核行为，如接管代码补全管线、修改文件差异视图、实现多文件上下文感知64% similarUnverifiedUnder the copy-on-write (CoW) model, the system does not immediately modify the original data block at write time; instead, it first creates a copy and then writes the new content, leaving the original block unchanged.59% similarUnverifiedThe read-then-write combination, in which an external write is triggered immediately after reading private data, is the classic path for data exfiltration and should be governed as an independent policy trigger condition.59% similarUnverifiedBtrfs uses a copy-on-write (CoW) mechanism that writes data to a new location rather than overwriting the original upon modification, which naturally produces more fragmentation than in-place update strategies.58% similar
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