前言 打开自己的blog一看,居然三个月没更新了...回想一下前几个月,开题 + 实验室杂活貌似也没占非常多的时间,还是自己太懈怠了吧,掉线城和文明6真的是时间刹手( 不过好消息是把15445的所有lab都锤完了,最近一个月应该没啥活干.立个flag,这个月更它个10篇blog,把15445的知识点.lab,以及6.S081想写的东西都写完.今天先做个复健,码一下刚做完的lab8,以及xv6的file system的学习笔记. 坏消息是leetcode一道没动,甚至主力啥语言啥框架还没定下来,开…

https://pdos.csail.mit.edu/6.S081/2021/labs/fs.html 1. Large files (moderate) 1.1 要求 Modify bmap() so that it implements a doubly-indirect block, in addition to direct blocks and a singly-indirect block. You'll have to have only 11 direct blocks, rat…

前言 今晚在实验室摸鱼做6.S081的Lab3 Allocator,并立下flag,改掉一个bug就拍死一只在身边飞的蚊子.在击杀8只蚊子拿到Legendary后仍然没能通过usertest,人已原地裂解开来.遂早退实验室滚回宿舍,捡起自己已经两年没写的blog,码点自己用vscode调试xv6的心得和小tips,如果对同样在码xv6但无法忍受gdb调试界面的小伙伴们有帮助那就太好了,积点功德,但愿明天能通过test,少打几只蚊子( 还是从直接用gdb调试说起 刚开始码lab时,我想很多人第一反…

前言 最近绝大多数的空闲时间都拿来锤15-445了,很久没动6.S081.前几天回头看了一下一个月前锤完的Lazy Allocation,自己写的代码几乎都不认识了.......看来总结之类的东西最好还是趁着热乎的时候写啊. 不过15-445的内容实在太多了,我只是为了锤Lab粗略的看了看课件,课件里很多东西都没研究,相关的总结还是推迟到所有Lab锤完后重新整理一下再写吧.先把几天前刚做完的Copy-On-Write给写出来.最近会把前面草草写下的Lab Lazy Allocation的相关内容…

Lab 4 System Services Goal: Develop skills using system administration tools and setting up and administering CUPS. Estimated Duration: 30 Sequence 1: Using cron Scenario: You want to know some information about the status of the system every ten min…

Lab 1 System Monitoring Goal: To build skills to better assess system resources, performance and security. Sequence 1: Inspecting your system Scenario: You are assigned responsibility for this system. You must learn how it isconfigured. Deliverable:…

Lab 11 System Rescue and Troubleshooting Goal: To build skills in system rescue procedures. Estimated Duration: 2 hours Lab Setup: When using rescue mode on a Xen enabled system, you may be prompted to select which root partition to mount. If you are…

Lab 5: File system, Spawn and Shell tags: mit-6.828 os 概述 本lab将实现JOS的文件系统,只要包括如下四部分: 引入一个文件系统进程(FS进程)的特殊进程,该进程提供文件操作的接口. 建立RPC机制,客户端进程向FS进程发送请求,FS进程真正执行文件操作,并将数据返回给客户端进程. 更高级的抽象,引入文件描述符.通过文件描述符这一层抽象就可以将控制台,pipe,普通文件,统统按照文件来对待.(文件描述符和pipe实现原理) 支持从磁盘加载…

I researched a lot about storage system classes given at good universities this year. This had two reasons: The first was thispost of a researcher at NetApp, about the missing of a good storage or file system class book and secondly our own storage s…

转自:http://arstechnica.com/information-technology/2013/06/review-is-microsofts-new-data-sharing-system-a-cross-platform-savior/ With Apple's licensing of Microsoft's exFAT file system, it seems like we finally have a good option for OS X and Windows d…