On Mon, 18 June 2007 03:45:24 -0600, Andreas Dilger wrote:There definitely seems to be an inflation of new filesystems. These days all the cool kids either write their own virtualization layer or their own filesystem. No idea why that happened, two years ago filesystems seemed old and boring. Consider me sceptical. Here is my personal opinion when looking at the list: Chunkfs, tilefs - research projects. At this moment nobody knows whether either of the approaches works or not. Once that is proven, the tricks should get incorporated in existing filesystems. Dave Chinner seems to be working on similar stuff for XFS already. Assuming he can deliver, a chunked/tiled/... XFS is useful while chunkfs and tilefs are mostly educational. It doesn't have to be XFS, Ext4 would do just as well. Logfs - flash filesystem. Btrfs - disk filesystem. Disk optimization comes down to avoiding seeks like the plague. Flash requires garbage collection, wear leveling and avoiding writes like the plague. It is quite unlikely that either filesystem will do well in the other's domain. At least some amount of code will remain seperate. Subsets of code might be useful for both. Collaboration on that level would be useful. Jörn -- Joern's library part 4: http://www.paulgraham.com/spam.html -
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