Solved

How to mirror  an active boot disk on Redhat/CentOs

Posted on 2012-04-01
2
898 Views
Last Modified: 2012-04-02
Hello experts,

I wonder if it's possible to mirror an active boot disk on redhat.

I know how to do it during the install, but not after the install. I want to learn how to do it on a production server.
0
Comment
Question by:cismoney
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 13

Assisted Solution

by:Sandy
Sandy earned 200 total points
ID: 37793165
You need to follow the below steps.

1. Need to boot in resuce mode and mount chroot.
2. Now convert existing / partition into meta device  (fdisk ==> Type ==> fd)
3. Now create a new HDD partition and convert into the same type.
4. Now initialize the meta device /dev/md0 with new partition.
5. once it is done then just attach / part in array.


!!! Cheers. but be carefull
0
 
LVL 78

Accepted Solution

by:
arnold earned 300 total points
ID: 37794737
There are several examples online that deal with transitioning.
https://wiki.archlinux.org/index.php/Convert_a_single_drive_system_to_RAID
0

Featured Post

Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Recover Lacie Edmini data. 11 64
Internal CA server 6 93
block mails from a particular country in postfix 7 51
AWS Linux EC2 question on group 7 16
Using libpcap/Jpcap to capture and send packets on Solaris version (10/11) Library used: 1.      Libpcap (http://www.tcpdump.org) Version 1.2 2.      Jpcap(http://netresearch.ics.uci.edu/kfujii/Jpcap/doc/index.html) Version 0.6 Prerequisite: 1.      GCC …
Introduction We as admins face situation where we need to redirect websites to another. This may be required as a part of an upgrade keeping the old URL but website should be served from new URL. This document would brief you on different ways ca…
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
Connecting to an Amazon Linux EC2 Instance from Windows Using PuTTY.

749 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question