Block-device snapshots with blksnap

As I just stated elsewhere in this LWN thread. I haven't had a need for this capability. The blkinterposer work seemed on its way. I guess you felt my lack of direct ownership personal. But iterating on things is how Linux is developed.

Working around the removal of a key export that the veeam team was (ab)using to hijack IO for their commerical backup product by introducing yet another mechanism to remap IO is certainly one way to proceed -- but it sure isn't the most productive way to advance Linux's existing capabilities without splintering our collective efforts.

I suppose I should've taken on working on something for some other company's benefit simply because I happen to work on and maintain DM? Pretty specious logic there.