On Tue, 2008-04-22 at 11:47 +0100, Stephane Chazelas wrote: > > but > when you write to it, the system makes sure that unless it has > been done already, the block you're modifying are being copied > first from the "real" volume to COW volume before being modified > in the "real" volume. And to be clear, the COW volumes of _all_ snapshots[1]. This is where the snapshot scaling problem arises. Zumastor claim to have solved that with their snapshots. I'd love to have time to play with it, indeed. If Zumastor are here listening, can you answer, are there any plans to get your snapshots into the main kernel tree? b.
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