B-Trees (Part 1)
In yesterday’s post, we discussed Checkpoint Maps, the simple linear-time data structures that APFS uses to manage persistent, ephemeral objects....
Joe T. Sylve, Ph.D. – Blog
Posts (Page 3 of 3)
Checkpoint Maps and Ephemeral Objects
In our last post, we discussed NX Superblock Objects and how they can be used to locate the Checkpoint Descriptor...
NX Superblock Objects
The NX Superblock Object is a key component of APFS. It stores key information about the Container, such as the...
Containers
APFS is a pooled storage, transactional, copy-on-write file system. Its design relies on a core management layer known as the...
Kinds of Objects
As we discussed in our last post, objects are the fundamental building blocks of APFS. While there are many different...
Anatomy of an Object
APFS is a copy-on-write file system, consisting of a set of immutable objects that are the fundamental building blocks of...
2022 APFS Advent Challenge
As an exercise in self-discipline, I’ve decided to get an early start on my 2023 New Year’s resolution of writing...