[Sheepdog] questions about qemu-img and sheepdog

jidalyg_8711 jidalyg_8711 at 163.com
Thu Jan 13 06:18:37 CET 2011

Hi, Kazutaka

I tried your commands, it looks like work well.
But When I used the following command to start kvm-qemu with the sheepdog : debian_inc images ,the kvm-qemu later became dead 
$./qemu-system-x86_64 -m 512 -hda sheepdog:debian_inc -net nic,model=e1000 -net tap -vnc -monitor stdio 

And I used the normal images, It worked very well 
Is it the bug ?

Thank you very much 




发件人: MORITA Kazutaka 
发送时间: 2011-01-12  19:50:59 
收件人: jidalyg_8711 
抄送: sheepdog 
主题: Re: [Sheepdog] questions about qemu-img and sheepdog 
At Wed, 12 Jan 2011 10:49:03 +0800,
jidalyg_8711 wrote:
> [1  <multipart/alternative (7bit)>]
> [1.1  <text/plain; gb2312 (base64)>]
> Hi, I've used the sheepdog .It is the great project!
> I have one question about qemu-img and sheepdog, 
> Does sheepdog support the growable disk images (their size increase as non empty sectors are written),Like as :
> $qemu-img -b sheepdog:debian -f qcow2 sheepdog : debian_inc
A snapshot tag is missing for the base image, and you can use only a
raw format for Sheepdog.
> sheepdog : debian is the based image
> sheepdog : debian_inc is the increase image.
> I tried this command ,but failed. So how the sheepdog create the increase images?
Try the followings:
 1. Create a base image
      $ qemu-img convert ./image.raw sheepdog:debian
 2. Take a snapshot to use as a base image
      $ qemu-img snapshot -c base sheepdog:debian
 3. Create a cloned image from sheepdog:debian:base
      $ qemu-img create -b sheepdog:debian:base sheepdog:debian_inc
See also:
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