[Sheepdog] questions about qemu-img and sheepdog
morita.kazutaka at lab.ntt.co.jp
Mon Jan 17 12:45:08 CET 2011
At Wed, 12 Jan 2011 21:17:25 +0800,
> Thanks your reply!
> I'll try it again.
> Some other questions:
> 1,The base image need to be a snapshot ? Why can't be a raw image?
> For local disk images ,The following commands worked well:
> $ qemu-img -b debian-base.img -f qcow2 debian_inc.img
To simplify the implementation of Sheepdog. I guess there is no
technical problem to use a file image as a backing file of a Sheepdog
vdi. If there are many requests for the feature, I'm not against to
> 2, I have do somethings and I found the following output:
> [root at sim92 store_dir]# collie cluster info
> Waiting for other nodes joining
> Ctime Epoch Nodes
> 2011-01-11 14:07:26 12 [10.60.1.93:7000, 10.60.1.92:7000, 10.60.1.94:7000]
> And I can't use the sheepdog now . Why this happened ?
I think you stopped Sheepdog without running 'collie cluster shutdown'.
If so, see
to fix the cluster state.
> Thanks 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:
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> > 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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> sheepdog at lists.wpkg.org
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