cloning virtual machines - how to speed up?

[Bharath Kumar]

Hi,

 I am on a job to speed up cloning of virtual machines.

 have tried using template cloning ec on Redhat linux using libvirt . ( virt-clone).

 

my observations show that the best time I have is about 6 mins to clone an image.

 

I need help / suggestions to improve.

 

any idea using LVM instead of Flat file image helps? Pros and cons ?

any other proven methods?

 

Thanks in advance

Bharath

[AJ Duncan]

Hi,
I did a quick search and found this article.
http://virtualfuture.info/2010/10/xenserver-fast-clone-a-vm-120-times-in-90-seconds/
The author suggests better than a clone a second for 120 clones. I
didn't see any comment
on the size of the clone though, but if its even a small image (s)he
was cloning, that's still
better than 6 mins :)

Hope this helps
Adrian

[Bharath]

I had this link before , the information posted is helpful. somehow it
does not work for me.

when I clone vm using flat file disk to use lvm, the driver gets
changed to phy and needs manual editing to start the cloned vm.
however I dont see much improvement in speed either.
any idea / epxeriment outputs on virt-clone usages or virt-install
with --import options?

Thanks
Bharath

On May 20, 3:05 pm, AJ Duncan <adrianjdun...@gmail.com> wrote:
> Hi,

> I did a quick search and found this article.http://virtualfuture.info/2010/10/xenserver-fast-clone-a-vm-120-times...

> The author suggests better than a clone a second for 120 clones.  I
> didn't see any comment
> on the size of the clone though, but if its even a small image (s)he
> was cloning, that's still
> better than 6 mins :)
>
> Hope this helps
> Adrian
>
> On May 19, 6:06 am, Bharath Kumar <bhava...@gmail.com> wrote:
>
>
>
> > Hi,
> >  I am on a job to speed up cloning of virtual machines.
> >  have tried using template cloning ec on Redhat linux using libvirt . (
> > virt-clone).
>
> > my observations show that the best time I have is about 6 mins to clone an
> > image.
>
> > I need help / suggestions to improve.
>
> > any idea using LVM instead of Flat file image helps? Pros and cons ?
> > any other proven methods?
>
> > Thanks in advance

> > Bharath- Hide quoted text -
>
> - Show quoted text -

[F. Feldmann]

have you tried posting such questions to the libvirt mailing lists of the upstream project? presumably that's where the experts are who can comment from the code directly I think.

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