curvefs client删除文件和目录功能设计curvefs client 删除文件和目录功能设计 背景 相关调研 moosefs chubaofs 方案设计思考 1. Trash机制是实现1个(类似chubaofs),还是2个(类似moosefs)? 2. Trash 放在哪里? 3. 是否需要做 session 机制(在 metaserver 打开),来维护 inode 的打开情况? • 方案设计 • Trash机制: ode。目录的nlink字段与文件的nlink字段不同,目录的nlink字段初始值为2,并且在目录下,每创建一个新目录,nlink字段也会+1,删除目录nlink相应的减1。 目录不支持硬链接。 ## 二 是删除时lookup count未考虑: lookup count 指的是文件的访问计数。当文件/目录被打开时,即使文件/目录已经被另一个进程删除了(nlink=0),该文件/目录仍然可以 通过meta文件系统来管理trash,更为优雅。 ## 缺点: moosefs是单mds,所以不存在接口原子性的问题,这块要重新考虑,我们实现上会比moosefs复杂,需要引入一些额外的复杂性。 2. 由于是按目录管理trash,那么必须是两个trash(其中一个是reserve)以区分两种不同的情况。 ## chubaofs chubaofs的方案如下: chubaofs实现了类似trash的机制,称为freelist,0 码力 | 15 页 | 325.42 KB | 1 年前3
Debian 参考卡片# Debian 参考卡片 # 版本 12 – Debian 12 'Bookworm' – 2023-03-22 https://www.debian.org/ ## 法律通告 本文档版权适用于 GNU 通用公共许可版本 3 或更高版本的相关条款。版权协议文本,能够在 https://www.gnu.org/copyleft/GPL.html 和 /usr/share/common-licenses/GPL-3 /usr/share/common-licenses/GPL-3 找到。 版权 © 2010,2016 Yanliang Tang (Chinese) 制作:https://www.debian.org/doc/user-manuals#refcard 获得帮助 |man page or man bash|阅读所有命令和许多配置文件的联机帮助。| |---|---| |command \[--help, -h]|大部分命令的简短说明。| 档,里面可能有文件 README.Debian 包含具体说明。| |在线文档|参考,手册,常见问题解答,HOWTO 等,可以在 https://www.debian.org/doc/找到| |邮件列表 at https://lists.debian.org/|社区总会给你很多帮助,搜索 users.| |Bug 追踪 at https://bugs.debian.org/|包含各种有用信息。| 安装0 码力 | 2 页 | 92.97 KB | 2 年前3
This Debian Reference (version 2.109)## debian Osamu Aoki Debian Reference Copyright © 2013-2021 Osamu Aoki This Debian Reference (version 2.109) (2023-12-18 14:53:01 UTC) is intended to provide a broad overview of the Debian system as non-developers.
• Insert the Debian installation media (either through USB or CD/DVD) • Power on the system and press the F12 function BIOS  • Insert the Debian installation media (either through USB or CD/DVD) - Power on the system and press the F12 functionCOLLABORATORS TITLE:Debian Reference ACTION NAME DATE SIGNATURE WRITTEN 35 1.6.6 Script snippets for piping commands ..... 36 Debian package management 38 2.1 Debian package management prerequisites 38 2.1.1 Debian package management system 38 2.1.2 Package configuration 0 码力 | 266 页 | 1.25 MB | 2 年前3
Debian 參考卡片(Traditional Chinese) 製作:https://www.debian.org/doc/user-manuals#refcard # Debian 參考卡片 # 版本 12 – Debian 12 'Bookworm' – 2023-03-22 https://www.debian.org/ 取得說明 |man 頁或 man bash|取得所有命令及許多設定檔的線上說明。| 到所有文件。也許帶有 README.Debian 檔,內有快速指引。| |網頁文件|包含了參考文件、說明手冊、常見問答、實作指南等等。位於 https://www.debian.org/doc/| |位於 https://lists.debian.org/ 的 郵遞論壇|社群永遠在您身旁,請以 users 搜尋。| |位於 https://wiki.debian.org/ 的 Wiki 站|包含了各式各樣的實用資訊。| 站|包含了各式各樣的實用資訊。| 安装 |安裝程式|所有的相關資訊位於https://www.debian.org/devel/debian-installer/| |---|---| |CD 影像檔|可於 https://www.debian.org/distrib/ 下载| |boot: expert|例如:不藉由 DHCP 來設定網路,或調整開機啟動程式的安裝。| |Or use a Live0 码力 | 2 页 | 102.75 KB | 2 年前3
Debian Linux Setup Guide For ThinkStation P330
Guidelines for Debian 9.5 and laterDebian Linux Setup Guide For ThinkStation P330 Guidelines for Debian 9.5 and later   ## Table of Contents Section 1 – BIOS Configuration Configuration ..... 3 Section 2 – Installing Debian 11 ..... 6 Section 3 – Wireless Connection ..... 19 Section 5 – Installing the Nvidia Graphics Driver ..... 25 Revision History ..... 37 ## Section 1 ## Section 2 – Installing Debian 11 Please refer to the following instructions and screenshots on how to install Debian 11 on the Lenovo ThinkStation P360. • Insert the Debian 11 installation media (either0 码力 | 37 页 | 4.57 MB | 2 年前3
Installation OpenMeetings 6.1.0 on Debian 11# Installation of Apache OpenMeetings 6.1.0 on Debian 11 The present tutorial is made based on a minimal fresh installations of debian-11.0.0-amd64-netinst.iso My sincere thanks to Maxim Solodovnik d/docker.list ...and copy-paste the following line: deb [arch=amd64] https://download.docker.com/linux/debian buster stable ...press in the keyboard Ctrl+x, will ask to save, press Y, and press Enter to exit editor. Install the public claves for this repository: sudo wget https://download.docker.com/linux/debian/gpg -O- | sudo apt-key add ...update: sudó apt update ...and install Docker: sudo apt install0 码力 | 16 页 | 760.65 KB | 2 年前3
How to combine Debian and Yocto/Bitbake?How to combine Debian and Yocto/Bitbake? ... Manuel TrautELCE 2017 - Prague ## What's next? 1. Why Yocto? 2. About Debian 3. Benefit of completely given (host dependencies) ## 2 ) About Debian ★ The universal OS ★ Debian and embedded? ★ Usage ☑ Limitations ★ E.L.B.E. ## The universal OS Debian provides more than a pure OS, it comes with open-source • Debian takes security very seriously Many security advisories are coordinated with other free software vendors and are published the same day a vulnerability is made public ## Debian and embedded0 码力 | 28 页 | 487.02 KB | 2 年前3
Opkg: Debian's Little CousinOpkg: Debian's Little Cousin Package Management on Embedded Alejandro del Castillo Chief Software Engineer ni.com  Development Philosophy IPKG tries to be like Debian, as much as possible. In fact, the philosophy in the development has been something like, "Do it like Debian unless there is a strong reason not to" to". The majority of the packages in the current repository come more or less straight out of Debian/arm unstable, (with documentation removed). Original IPKG FAQ ## Why yet another Package Manager?0 码力 | 35 页 | 1.60 MB | 2 年前3
Debian 维护者指南## debian Debian 维护者指南 Osamu Aoki, 杨博远, Fonzie Huang, and xiao sheng wen(肖盛文) November 10, 2023 Debian 维护者指南 by Osamu Aoki, 杨博远, Fonzie Huang, and xiao sheng wen(肖盛文) Copyright © 2014-2021 Osamu Aoki 本指南在撰写过程中参考了以下几篇文档: • “Making a Debian Package (AKA the Debmake Manual)”, 版权所有 © 1997 Jaldhar Vyas. • “The New-Maintainer’s Debian Packaging Howto”, 版权所有 © 1997 Will Lowe. • “Debian New Maintainers’ Guide”,版权所有©1998-2002 本指南的最新版本应当可以在下列位置找到: • 在 debmake-doc 软件包中,以及 • 位于 Debian 文档网站。 ## Contents 1 概览 2 预备知识 2.1 Debian 社区的工作者 2.2 如何做出贡献 2.3 Debian 的社会驱动力 2.4 技术提醒 2.5 Debian 文档 2.6 帮助资源 2.7 仓库状况 2.8 贡献流程 2.90 码力 | 142 页 | 1.11 MB | 2 年前3
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