On Sun, 2009-08-30 at 16:12 -0500, Nicolas Williams wrote: > > One thing about NFS is that it's meant to be neutral w.r.t. the type of > filesystem it shares. So NFSv4, for example, has features for dealing > with filesystems that don't have a notion of persistent inode number. > Whereas Lustre has its own on-disk format and therefore can't be used to > share just any type of filesystem.
You have "stumbled on to" an interesting, significant difference between NFS and Lustre. NFS is a protocol for sharing an existing filesystem. Lustre is a filesystem -- so much so in fact, that NFS can even share it out. b.
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