Re: [Qemu-discuss] Does qemu-img support creating tftp json backing file?

[Kevin Wolf]

Am 30.08.2016 um 08:58 hat Han Han geschrieben:
> Hi, all
> I try to create a json backing file via tftp protocol but failed.
> # curl tftp://10.66.6.236/tftp -o tftp
>   % Total    % Received % Xferd  Average Speed   Time    Time     Time  
> Current
>                                  Dload  Upload   Total   Spent    Left  Speed
> 100  100M  100  100M    0     0  2680k      0  0:00:38  0:00:38 --:--:-- 2674k
> 100  100M  100  100M    0     0  2680k      0  0:00:38  0:00:38 --:--:-- 2680k
> 
> # qemu-img create -f qcow2 -b 'json:{"file.driver":"tftp", 
> "file.url":"tftp://10.66.6.236:69/tftp"}' /var/lib/libvirt/images/tftp.img
> qemu-img: /var/lib/libvirt/images/tftp.img: CURL: Error opening file: 
> getpeername() failed with errno 107: Transport endpoint is not connected
> 
> Is tftp supported in qemu-img? How can I solve the issue? Thks

qemu-img should be able to use it, yes.

However, it's one of those protocols that are never used in practice and
that I've actually never used myself. It is possible that there is a bug
related to TFTP and nobody tried it.

Kevin