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cp --reflink
и проверьD
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cp --reflink
и проверьOut of band / batch deduplication is deduplication done outside of the write path. We've sometimes called it offline deduplication, but that can confuse people: btrfs dedup involves the kernel and always happens on mounted filesystems. To use out-of-band deduplication, you run a tool which searches your filesystem for identical blocks, and then deduplicates them.
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