Migrating from RAID 0 to RAID1 on Centos

Question

linux

There is a server with RAID0, in order to migrate to RAID1, it was decided to reinstall Centos and deploy a backup. But if you deploy a backup of all files, then important information will be overwritten, for example, the /etc/mdadm.conf file
. this file will contain incorrect data.
What is the best way to perform this migration?

Answer 1

For example, like this:

1. Create a system backup
2. Boot from LiveCD
3. Create RAID1, partition disks (/, swap, etc..)
4. Deploy system backup to new RAID
5. Change mdadm.conf settings to boot from mirror
6. Change bootloader settings (grub, lilo)
7. Change fstab/mtab settings