Posted Jun 8, 2010 22:35 UTC (Tue) by BrucePerens
Parent article: The Next3 filesystem
Why do this at the filesystem level? It's possible to do a copy-on-write image as a block device. Then you'd have filesystem independence. It would be sensitive to changes in filesystem metadata: time stamps, free block lists, inodes, etc., but I'm not convinced this would be a tremendous overhead unless you compact the filesystem or do something else that causes all blocks to be written.
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