HAMMER Stabilizing
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Matthew Dillon sent out a series of updates about his developing HAMMER filesystem, noting that he is currently focusing on the reblocking and pruning code, tracking down a number of bugs resulting in B-Tree corruption. He also noted that previously HAMMER was comprised of three components: B-Tree nodes, records, and data. In his latest cleanups, he has entirely removed the record structure, "this will seriously improve the performance of directory and inode access." This change did require an on-media format change, "I know I have said this before, but there's a very good chance that no more on-media changes will be made after this point. The official freeze of the on-media format will not occur until the 2.0 release, however."
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