Hmm, sparse files get a little annoying after the offset gets high enough. I've had weirdness with sparse files that had offsets in the 64bit range. So... eve

Hmm, sparse files get a little annoying after the offset gets high enough. I've had weirdness with sparse files that had offsets in the 64bit range. So... eventually if you don't compact and start from a low offset ring buffer style, this solution will stop working after you pass enough data through the "pipe". Yes. That means a lot of data, but it's a boundary case worth knowing about.