RAID duplication

[Michael Bilow]

As a mounted volume?  Why not just use tar?

	tar -cpf - -c /vol1 . | tar -xpf - -c /vol2

I'm not contending that this exact syntax will work -- I just dashed it
off now without testing it -- but it should illustrate the concept.

You cannot really use dd to copy an exact disk array because most
filesystems (including second extended) precomute the locations of the
spare superblocks based upon the logical media size.  If you use dd, then
you will mess this up and things like ext2fs can fail, even if you do
manage to get a mountable volume.

-- Mike


On 2000-12-06 at 16:22 -0500, Brad Noyes wrote:

> Hi Guys,
> I'm trying to find a way to duplicate a RAID 5 array. I'm using the compaq 3200 smart array controller. I can setup 2 arrays on the machine, and i'm
> looking to copy one to the other, to duplicate the array. Has anyone tried this, or know one way or another if this is possible, or have any
> suggestions on doing this (i was thinking dd)?
> 
> Thanks,
> --Brad

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