Re: Slightly OT: First Time KVM and LVM on Centos

[Ross Walker <rswwalker@xxxxxxxxx>]

On Jun 20, 2011, at 9:56 AM, Kwan Lowe <kwan.lowe@xxxxxxxxx> wrote:

> On Thu, Jun 16, 2011 at 8:59 AM, Les Mikesell <lesmikesell@xxxxxxxxx> wrote:
>> 
>>> There is no reason that should be true.  Copying 20GB out of an LV
>>> should take exactly the same amount of time as copying 20GB out of a file.
>> 
>> What about the destination?  Wouldn't it likely be harder to find a place to put
>> the LV copy than space to write a file?  Or can you copy back and forth?
>> 
>> --
> I just copy the raw filesystem directly to the remote raw filesystem
> with dd over ssh. If needed you can dd the entire partition to a file
> also.
> 
> With LVMs you can also mirror the LV across multiple LUNs, break the
> mirror, then move the other LUN to another system.

You might have better performance using Clonezilla over ssh then dd.

-Ross

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