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Wandering Tree?Wandering Tree?Posted Apr 8, 2008 10:43 UTC (Tue) by saffroy (subscriber, #43999)In reply to: Wandering Tree? by deleteme Parent article: UBIFS
It's been a while since I read about it, but this approach sounds similar to the method used by WAFL, the filesystem used by NetApp and described here: http://media.netapp.com/documents/wp_3002.pdf This is great for snapshots, but I think it's patented (maybe someone can confirm?). Speaking of patents, from what I read in this article, I don't see what's different between UBI and FTL, the latter being patented too.
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Wandering Tree? Posted Apr 11, 2008 16:48 UTC (Fri) by anton (guest, #25547) [Link] Netapp has patents, but if wandering trees are among them, then that's a weak patent, because there is quite a bit of very well-documented prior art: They were used in log-structured file system implementations, and are also the technique that people programming in functional and logic programming languages use to manage trees.
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