Create a Linux Software RAID 1, from an existing install

webnoelle · n00b Joined: 06 Apr 2004 Posts: 50

Hi everyone!!

I have a system that I would like to turn into a raid 1. I am fairly familiar with doing the install from scratch on a software raid system, but am not sure how I would go about doing it from a system that is already partitioned.

It is a 120gb hard drive, I am planning on sticking an identical drive in, and I would like to mirror both /dev/hda1 and /dev/hda3 to the new hard drive.

Is there anyone that can give me a rundown of what this process would look like?

My guess right now is:
1) change partition type of /dev/hda1 and /dev/hda3 to Raid Autodetect
2) create /etc/raidtab
3) set sytem to boot to /dev/md0
5) partition new hd to match existing
4) run raidhotadd /dev/md0 /dev/hdc, etc

I am along the right track? Thanks to anyone who can help

medius · n00b Joined: 04 Jul 2002 Posts: 7 Location: Vancouver

It is a little bit more complex than that. Try following this howto.

http://www.schwarzvogel.de/od2md.shtml

good luck.

webnoelle · n00b Joined: 06 Apr 2004 Posts: 50

perfect link

thanks a bunch medius!!