The last couple of years have seen a surge in file system development.
Sun open sourced ZFS and acquired Lustre. Quantum, Panasas, IBM, HP, NetApp and Red Hat have all boosted their file system development efforts. And NFS is getting a major overhaul in the form of pNFS. Not surprisingly, all this development effort has stimulated work in open source communities to come up with higher performance file systems for Linux.
Enter a couple of developments on the Linux front: the BTR File System--known as Butter FS or B-tree FS--and ext4...
 
 
 
 
 
Linux Kernel Development How Fast it is Going, Who is Doing It, What They are Doing, and Who is Sponsoring It: An August 2009 Update
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