Re: [linux-lvm] Cloning Logical Volumes

From: Jonathan E Brassow <jbrassow@redhat.com>
To: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] Cloning Logical Volumes
Date: Thu, 27 Apr 2006 17:21:26 -0500	[thread overview]
Message-ID: <96158ca02019bf92bbc5dea70d9edef9@redhat.com> (raw)
In-Reply-To: <000601c66984$779e7230$640a0a0a@laptopoptimus>

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dd is probably the best way right now.

in the future, the clone would probably take the form:
prompt> lvconvert -m1 vg/lv; (wait for sync); lvsplit vg/lv

The syntax isn't worked out yet and lvsplit is not there yet... but we 
have talked about doing something like that.

  brassow

On Apr 26, 2006, at 5:55 PM, Greg Hartzog wrote:

> Hello there folks.  I have a question.
>  
> I am looking for a better way of cloning logical volumes then creating 
> a new logical volume, identical to a source logical volume, and using 
> “dd” to copy data between the two logical volumes.
>  
> I would love to use dm-mirror to do this, but I do not think any 
> interface has been provided to do this yet.
>  
> All suggestions and ideas appreciated.
>  
> I am running lvm2-2.02.04-r1 & 2.6.15 kernel.
>  
> Thanks!
>  
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

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dd is probably the best way right now.

in the future, the clone would probably take the form:

prompt> lvconvert -m1 vg/lv; (wait for sync); lvsplit vg/lv

The syntax isn't worked out yet and lvsplit is not there yet... but we
have talked about doing something like that.

 brassow

On Apr 26, 2006, at 5:55 PM, Greg Hartzog wrote:

<excerpt><fontfamily><param>Arial</param><bigger><bigger>Hello there
folks.  I have a question.</bigger></bigger></fontfamily>

<fontfamily><param>Arial</param><bigger><bigger> </bigger></bigger></fontfamily>

<fontfamily><param>Arial</param><bigger><bigger>I am looking for a
better way of cloning logical volumes then creating a new logical
volume, identical to a source logical volume, and using “dd” to copy
data between the two logical volumes.</bigger></bigger></fontfamily>

<fontfamily><param>Arial</param><bigger><bigger> </bigger></bigger></fontfamily>

<fontfamily><param>Arial</param><bigger><bigger>I would love to use
dm-mirror to do this, but I do not think any interface has been
provided to do this yet.</bigger></bigger></fontfamily>

<fontfamily><param>Arial</param><bigger><bigger> </bigger></bigger></fontfamily>

<fontfamily><param>Arial</param><bigger><bigger>All suggestions and
ideas appreciated.</bigger></bigger></fontfamily>

<fontfamily><param>Arial</param><bigger><bigger> </bigger></bigger></fontfamily>

<fontfamily><param>Arial</param><bigger><bigger>I am running
lvm2-2.02.04-r1 & 2.6.15 kernel.</bigger></bigger></fontfamily>

<fontfamily><param>Arial</param><bigger><bigger> </bigger></bigger></fontfamily>

<fontfamily><param>Arial</param><bigger><bigger>Thanks!</bigger></bigger></fontfamily>

<fontfamily><param>Arial</param><bigger><bigger> </bigger></bigger></fontfamily>

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read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/</excerpt>