search
HomeDatabaseMysql Tutorial Exadata 删除,添加物理磁盘过程

Exadata关于磁盘部分,新增加了lun,celldisk,griddisk的概念,这里简单介绍一下,如下图:我们可以看到一个物理硬盘添加到Cell之后,会自动创建LUN,LUN对应的

Exadata关于磁盘部分,新增加了lun,celldisk,griddisk的概念,香港服务器,美国服务器,这里简单介绍一下,如下图:

我们可以看到一个物理硬盘添加到Cell之后,会自动创建LUN,LUN对应的是创建一个celldisk,一个celldisk对应一个或者多个griddisk,而griddisk就可以提供给ASM实例使用了。

这里我主要记录一下我在将一个正在运行的Exadata机器, 它的一个磁盘正常删除并添加的完整过程。
(这里强调一下“CellCLI>”都是在Cell上执行的命令,“SQL>” 都是在compute node(既数据库节点)上执行的命令)

1.首先要确定我需要删除的硬盘的LUN的位置,celldisk名字,通过下面命令可以查询

2.查询griddisk的信息,这个可以找到asm中的disk name,以及diskgroup的name。
通过这个命令还可以看到这个celldisk对应三个griddisk。

3.通过ASM实例查询磁盘信息

4.下面开始我们的删除操作,如果删除celldisk,首先应该从最上层,ASM层面开始删除磁盘

5.删除的过程中,通过这个命令查收reblance进度,确保ASM删除磁盘的动作完成,再进行下一步操作。

6.ASM中删除掉DBFS_DG_CD_03_DMORLCEL08磁盘后,通过griddisk命令查询,发现对应的asmDiskName,asmDiskGroupName,已经没有值了。

7.删除griddisk,并查询,发现已经查询不到griddisk DBFS_DG_CD_03_DMORLCEL08的信息

8.继续删除RECO_CD_03_dmorlcel08并查询

9.继续删除DATA_CD_03_DMORLCEL08,并查询

10.删除celldisk,并查询LUN信息

11.在删除完成后,我们要开始添加的过程,实际troubleshooting中,会遇到Exadata在磁盘更换完成后,并没有正常的创建celldisk和griddisk,我们需要手动创建celldisk和griddisk。

手动创建之前,我们需要查询physicaldisk状态,确认physicalSerial和你更换的磁盘是对应的

12.创建celldisk,根据前面的信息,确认需要创建的celldisk与LUN能准确的匹配上,服务器空间,不要写错

14.首先查询一个正常的磁盘,确认后续需要设置的信息,如name,size,offset

15.创建griddisk磁盘

16.如果磁盘没有删除的情况下,需要force再次删除一下,但是我们的测试中,前面已经正常删除磁盘 .

17.添加磁盘

18.添加磁盘的过程,通过这个命令来检查完成状况

SQL> select * from v$asm_operation;

19.最后,全部完成的状态

       至此,全部的实验已经完成,如果在更换磁盘后没有正常添加,可以参考这个实验。

本文出自 “小小狗窝” 博客,谢绝转载!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
How to solve the problem of mysql cannot open shared libraryHow to solve the problem of mysql cannot open shared libraryMar 04, 2025 pm 04:01 PM

This article addresses MySQL's "unable to open shared library" error. The issue stems from MySQL's inability to locate necessary shared libraries (.so/.dll files). Solutions involve verifying library installation via the system's package m

Reduce the use of MySQL memory in DockerReduce the use of MySQL memory in DockerMar 04, 2025 pm 03:52 PM

This article explores optimizing MySQL memory usage in Docker. It discusses monitoring techniques (Docker stats, Performance Schema, external tools) and configuration strategies. These include Docker memory limits, swapping, and cgroups, alongside

How do you alter a table in MySQL using the ALTER TABLE statement?How do you alter a table in MySQL using the ALTER TABLE statement?Mar 19, 2025 pm 03:51 PM

The article discusses using MySQL's ALTER TABLE statement to modify tables, including adding/dropping columns, renaming tables/columns, and changing column data types.

Run MySQl in Linux (with/without podman container with phpmyadmin)Run MySQl in Linux (with/without podman container with phpmyadmin)Mar 04, 2025 pm 03:54 PM

This article compares installing MySQL on Linux directly versus using Podman containers, with/without phpMyAdmin. It details installation steps for each method, emphasizing Podman's advantages in isolation, portability, and reproducibility, but also

What is SQLite? Comprehensive overviewWhat is SQLite? Comprehensive overviewMar 04, 2025 pm 03:55 PM

This article provides a comprehensive overview of SQLite, a self-contained, serverless relational database. It details SQLite's advantages (simplicity, portability, ease of use) and disadvantages (concurrency limitations, scalability challenges). C

Running multiple MySQL versions on MacOS: A step-by-step guideRunning multiple MySQL versions on MacOS: A step-by-step guideMar 04, 2025 pm 03:49 PM

This guide demonstrates installing and managing multiple MySQL versions on macOS using Homebrew. It emphasizes using Homebrew to isolate installations, preventing conflicts. The article details installation, starting/stopping services, and best pra

How do I configure SSL/TLS encryption for MySQL connections?How do I configure SSL/TLS encryption for MySQL connections?Mar 18, 2025 pm 12:01 PM

Article discusses configuring SSL/TLS encryption for MySQL, including certificate generation and verification. Main issue is using self-signed certificates' security implications.[Character count: 159]

What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)?What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)?Mar 21, 2025 pm 06:28 PM

Article discusses popular MySQL GUI tools like MySQL Workbench and phpMyAdmin, comparing their features and suitability for beginners and advanced users.[159 characters]

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

Repo: How To Revive Teammates
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
1 months agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

WebStorm Mac version

WebStorm Mac version

Useful JavaScript development tools

VSCode Windows 64-bit Download

VSCode Windows 64-bit Download

A free and powerful IDE editor launched by Microsoft

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor