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Old 01-28-2005, 10:10 AM   #1
PAarcher
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Mirroring 2 drives - one already partitioned.


I've got a server with 2 - 36 drives. /dev/sda and /dev/sdb.

/dev/sda has sda1-sda8 already partitioned off. I want to mirror that drive to /dev/sdb.

Can I do that without re-installing?

Thanks for your help.
Trevor
 
Old 01-28-2005, 11:46 AM   #2
JaseP
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Like a software raid or a backup???
 
Old 01-28-2005, 11:59 AM   #3
PAarcher
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Just for disk redundancy in case of crash.
 
Old 01-28-2005, 12:10 PM   #4
verzonnen
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You can try to clone the drive with "dd" like so dd if=/dev/hda of=/dev/hdb
You might need to format the drive first and do all partitions seperate.

There is also a linux tool around that does something like "ghost" just google for it.

Or you can just cp (-Rp i guess) everything from drive 1 to drive 2 (or even use tar)

Have fun
 
Old 01-28-2005, 01:00 PM   #5
PAarcher
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I'm looking more to set up a raid mirroring to keep the drives in sync. That way if one fails, the other can be brought up and take over.
 
Old 01-28-2005, 01:16 PM   #6
verzonnen
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mirroring is a good idea, but that would probably require you to to do a reinstall, since I think you have to use logical volumes. Also both drives will be simulltaniously online and a hard drive failure would not crash the system, but you will have to power down to rplace the drive at some point...
 
Old 01-28-2005, 03:28 PM   #7
PAarcher
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Thanks everyone. I reinstalled and setup RAID 1.
 
  


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