Here's some info from gherkin0 back from June of 2016: gherkin0 on June 26, 2016 | next [–] > Fun fact: Dominic Giampalo (who wrote the BeOS file system) is o

Here's some info from gherkin0 back from June of 2016: gherkin0 on June 26, 2016 | next [–] > Fun fact: Dominic Giampalo (who wrote the BeOS file system) is on the APFS team. His book "Practical File System Design" is an excellent description of a traditional UNIX file system design. May be out of print now but I think used copies turn up on Amazon. It looks like he has a PDF up on his website: http://www.nobius.org/~dbg/practical-file-system-design.pdf http://www.nobius.org/~dbg/practical-file-system-design.pdf