New port: sysutils/stressdisk

This is a program designed to stress test your disks and
find failures in them.

• Use it to soak test your new disks / memory cards / USB sticks before trusting your valuable data to it.

• Use it to soak test your new PC hardware also for the same reason.

WWW: https://github.com/ncw/stressdisk

PR: 251309
Submitted by: Nuno Teixeira <ed.arrakis@gmail.com>