[sheepdog-users] Erasure coding and qemu-img

[Andrew J. Hobbs]

Amazing work to turn that around.  I will play with it in my test bed.

On 10/29/2013 04:58 AM, Liu Yuan wrote:
> On Tue, Oct 29, 2013 at 08:47:25AM +0100, Valerio Pachera wrote:
>> 2013/10/28 Andrew J. Hobbs <ajhobbs at desu.edu>:
>>> There isn't a lot of existing documentation on proper usage of vdi
>>> write/read or using vdi backup/restore that I can find at the moment.
>> http://www.sheepdog-project.org/doc/vdi_read_and_write.html
>>
>> If you think it's not clear or need more examples, let me know.
> Hi, I have make qemu-img redundancy aware now and patch set is queued. If you
> want to use it, you can try our temp repo
>
> https://github.com/sheepdog/qemu.git
>
> which contains all the temporarily unqueued patches from Sheepdog project to QEMU.
>
> To use it, e.g,
>
> #convert existing image into erasured image
> qemu-img convert -o redundancy=2:3 your-image sheepdog:image
>
> #create a new erasured image
> qemu-img create -o redundancy=8:3 sheepdog:new
>
> #create a replicated image as before
> qemu-img create -o redundancy=3 sheepdog:new
>
> Thanks
> Yuan
>

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