https://jingyu.uk/tags/xv6/Jingyu Liu · PhD student in Financial Technology at HKUST (Guangzhou). Research in blockchain, mechanism design, and decentralized finance.en-UShttps://jingyu.uk/posts/xv6-fs/https://jingyu.uk/posts/xv6-fs/Fri, 01 Oct 2021 10:34:07 +0800<h1 id="xv6-file-system-overview">xv6 File system overview</h1> <p>In general, There are 3 different ascpect on unix-like file system, file descriptor, file/directory and block. In xv6, they are distributed into 7 layers: <img src="https://jingyu.uk/images/cs/xv6-layer.png" alt=""></p> <hr> <h2 id="block-interface">Block interface</h2> <p>The xv file system&rsquo;s block interface consists of 34 layers(disk, buffer cache , logging and bitmap) <strong>Goal: achieve crash recovery</strong></p>