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11 lines
497 B
ReStructuredText
11 lines
497 B
ReStructuredText
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Reflink
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bcachefs supports reflink, similarly to other filesystems with the same
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feature. cp –reflink will create a copy that shares the underlying
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storage. Reading from that file will become slightly slower - the extent
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pointing to that data is moved to the reflink btree (with a refcount
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added) and in the extents btree we leave a key that points to the
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indirect extent in the reflink btree, meaning that we now have to do two
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btree lookups to read from that data instead of just one.
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