In this web content, the author provides a simple and comprehensive description of the Linux ext4 file system. They acknowledge that they are not an expert on ext4, but aim to explain it in a way that can be understood by readers. The author warns that the post may not cover all features of ext4 and that there may be inconsistencies between sections. They provide examples and instructions on creating an ext4 file system, explaining each step in detail. The author also discusses the layout of the ext4 file system, including block groups and superblocks. Overall, the content aims to educate readers on ext4 in a clear and straightforward manner.
https://metebalci.com/blog/a-minimum-complete-tutorial-of-linux-ext4-file-system/