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Anyone know how to change RAID O to RAID 1 On Linux

  • Yoda
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Post May 29th, 2006, 9:47 pm

Does anyone know how to change RAID 0 to RAID on a Dell Linux Server without reinstalling the operating system?

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Post May 29th, 2006, 9:47 pm

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Post May 29th, 2006, 10:18 pm

Is it possible? Yes. Is it recommended? Only if you've backed up everything and don't care if all of the data gets erased (not that it will happen, but that it can).

Code: [ Select ]
man mdadm
mdadm --help
  1. man mdadm
  2. mdadm --help


First thing you need is an identical drive - down to the partitioning. Then:
Code: [ Select ]
# /sbin/mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/hdaN /dev/hdbN

This will mirror everything on the partition /dev/hdaN to the partinion /dev/hdbN and create /dev/md0. You then change your fstab to point to /dev/md0 rather than /dev/hdaN.

That's pretty much it in a nutshell.
http://www.disabo.com

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