[Qemu-devel] qemu-img qcow and raw format

[Francois Visconte <francois.visconte@inria.fr>]

Hello,

I'm currently developing an OS deployment tool similar to G4U (ghost for 
unix).
This is a very basic tool
  - boot an initrd
  - configure network
  - ssh deployment-server "cat image.dd"  > /dev/sda
  - reboot


I'm using qemu to test my initrd and deployment tool and i would like 
replace my raw image format with qcow images (size/compression and crypto)

  - ssh deployment-server "cat image.qcow" | qemu-img - -O raw /dev/sda

The problem is qemu-img can't read from stdin, so i tried :

  - mkfifo deploy-in.fifo
  - qemu-img convert deploy-in.fifo -O raw /dev/sda
  - ssh deployment-server "cat image.qcow" > deploy-in.fifo
    qemu-img: Could not open 'deploy-in.fifo'


Is there any way to achieve this goal ?


Cheers,
François Visconte