[virt-tools-list] Sparse in Virt-clone

[Pankaj Rawat]

Hi Richard,
Thanks for the input,

I have mentioned In my previous mail the code snippet which is affecting the size of the cloned image, But I am not sure if this is the correct way to do this.

I managed to get a fully working cloned VM (from virt-clone) with size even less than the original one . That is the reason I am confused about this Code change.

And I also want to know why sparse in VolumeDisk.py  code snippet mentioned in my previous mail is initially FALSE

Regards,
Pankaj Rawat
NECHCL ST



-----Original Message-----
From: Richard W.M. Jones [mailto:rjones at redhat.com]
Sent: 12 September 2012 15:16
To: Pankaj Rawat
Cc: 'virt-tools-list at redhat.com'
Subject: Re: [virt-tools-list] Sparse in Virt-clone


On Wed, Sep 12, 2012 at 07:28:46AM +0000, Pankaj Rawat wrote:
>
> Hi all,
>
> I am trying to clone a lvm2 image following thing haapens when I clone
> a image with virt-clone command
>
> virt-clone --prompt --force --original  lvm_thin_1 --name  lvm_thin_2
> --file /dev/volgrp/lvm_thin2
>
> Now when I clone this,  It clone successfully but the cloned image is
> fully expanded ,  I mean it takes all 100% space

virt-clone doesn't give you much value here.  It basically makes a few changes to the libvirt XML configuration (like assigning a new name and UUID) which you could easily do yourself.

So the real question is how to copy a thin-provisioned LV and keep it sparse.  I don't see a way to do this, but you could create a snapshot of the original using the regular tools (lvcreate).

Rich.

--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones New in Fedora 11: Fedora Windows cross-compiler. Compile Windows programs, test, and build Windows installers. Over 70 libraries supprt'd http://fedoraproject.org/wiki/MinGW http://www.annexia.org/fedora_mingw



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