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Lustre/Intermezzo/P2PLustre/Intermezzo/P2PPosted Dec 19, 2003 17:12 UTC (Fri) by giraffedata (subscriber, #1954)In reply to: Lustre/Intermezzo/P2P by brugolsky Parent article: Lustre 1.0 released It is not uncommon for a home with a few machines to have a few tens to hundreds of gigabytes of disk space scattered across several machines. It would be nice to unify that under one namespace. Agreed, but that has little to do with Lustre. You're alluding to a distributed filesystem, which is fundamentally different from what Lustre is: a shared filesystem. The Lustre approach to unifying the storage is to remove the storage from all those systems and stick it into a central filesystem to which all the systems have access. It's specially designed to have that logically centralized system be physically spread out enough that it isn't a bottleneck even for huge numbers of storage users. The separate storage approach is what makes Lustre impractical for small applications -- who wants to pay for a bunch of dedicated metadata and object storage servers just to serve a few home computers? I don't doubt that features could theoretically be added to Lustre to allow it be a distributed filesystem and/or be practical in homes and mobile situations, but those features would have little to do with Lustre technology as it is known today.
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