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First idea to come into my head... write a simple FUSE filesystem (there's plenty of examples) that's deliberately slow (just add a delay every few Kb read/write?), create a large file on that and use that large file as a disk in KVM ?– Stephen HarrisCommented Jul 5 at 13:12
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@StephenHarris Yes, putting the image files on a slow media is one possibility. However, I was hoping there would be something that would allow me to set the I/O speeds a bit more precicely.– Kusalananda ♦Commented Jul 5 at 13:14
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