[sheepdog-users] change default copies number

Liu Yuan namei.unix at gmail.com
Mon Jun 2 06:06:06 CEST 2014

On Sun, Jun 01, 2014 at 08:20:58PM +0400, Maxim Terletskiy wrote:
> Hi!
> My cluster was formatted with copies = 2. I know that if I'm
> creating images with "dog" command, I can change copies number with
> "-c" option. How can I change copies number for "qemu-img convert"?

For qemu with version 2.0 or plus, we support -o redundancy option similar to
dog's '-c'

# create a fully replicated vdi with x copies
-o redundancy=x (1 <= x <= SD_MAX_COPIES)

# create a erasure coded vdi with x data strips and y parity strips
-o redundancy=x:y (x must be one of {2,4,8,16} and 1 <= y < SD_EC_MAX_STRIP)

Which support qemu and qemu-img binary.


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