The question [How to find which file is under heavy use/IO][1] was rightfully marked as a duplicate of [Linux IO monitoring per file][2] and it was closed, but its answers weren't moved to the "original" question. I'd like them to be moved, so that they don't get lost.


  [1]: https://serverfault.com/questions/543457/how-to-find-which-file-is-under-heavy-use-io
  [2]: https://serverfault.com/questions/327985/linux-io-monitoring-per-file