20 GB should be more than enough. It should run the repro binary several times, using more disk space each time since it leaves the each run in place when it goes on to the next, and then get a failure from fallocate on the last one when the disk is filled up. I've attached a file showing a successful repro run on a 20 GB disk. Could the no space errors you are seeing be a ulimit issue?
Yes, LVM is required to reproduce the issue; sorry about the error in the repro steps; fixed now.
Can you clarify what machine information you're looking for?
20 GB should be more than enough. It should run the repro binary several times, using more disk space each time since it leaves the each run in place when it goes on to the next, and then get a failure from fallocate on the last one when the disk is filled up. I've attached a file showing a successful repro run on a 20 GB disk. Could the no space errors you are seeing be a ulimit issue?
Yes, LVM is required to reproduce the issue; sorry about the error in the repro steps; fixed now.
Can you clarify what machine information you're looking for?