James G. Sack (jim) wrote:
Perhaps I should have used virtualization instead of indirection, and it's all handwaving, of course, but I was thinking that removing a layer could improve performance, mainly latency, I suppose. And not less important, I was thinking that there might be simplification leading to better maintainability and fewer places for bugs to hide.
So far I have never seen a measure of latency induced by LVM or heard any concerns that it is a performance bottleneck. Given that a few pointer redirects in the block layer are FAR faster than the latency imposed by the disk itself not too many people are concerned with LVM performance yet.
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