I was then going to ask what you were copying, from where, and to where, but it seems the others got to you first. What is your exact setup? From your description, it seems you have / on your HDD. What do you have on your SSD? Or do you just keep it as a misc. data drive, and not actually in the filesystem? Also, are you recursively copying / to the SSD? Why?
Hate to not actually present any constructive solutions, but what happens when you copy one of the 2GB files, then wait a bit, and copy the second, as opposed to doing everything consecutively? Finally, why are you using xfs?
