[Qemu-devel] Re: qemu-img help missing backing file

[Alexander Graf]

On 30.03.2010, at 14:30, Kevin Wolf wrote:

> Am 30.03.2010 14:22, schrieb Alexander Graf:
>> Howdy,
>> 
>> I just wanted to create a backed qcow2 image and was irritated by qemu-img 
>> not showing me the correct command line option. It's just missing from the 
>> list:
> [...]
>> Is this intentional? The actual command still works:
>> 
>>> address@hidden:~/git/qemu> qemu-img-kvm create -f qcow2 -b 
>>> /media/studio/images/SUSE/s390/sles11.raw /dev/shm/sles11-zipl.qcow2
>>> Formatting '/dev/shm/sles11-zipl.qcow2', fmt=qcow2 size=21474836480 
>>> backing_file='/media/studio/images/SUSE/s390/sles11.raw' encryption=off 
>>> cluster_size=0 
> 
> -b still works to maintain compatibility with older versions. The
> documented way is -o backing_file=foo (the qemu-img output you quote
> even contains this option).

Interesting O_o. Maybe it'd be a good idea to give some examples in the help 
output? The same way the -e and -b options were having examples there too. That 
really makes them easier to find.


Alex