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[Qemu-devel] Re: qemu-img help missing backing file
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] Re: qemu-img help missing backing file |
Date: |
Tue, 30 Mar 2010 14:30:44 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.8) Gecko/20100301 Fedora/3.0.3-1.fc12 Thunderbird/3.0.3 |
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).
Kevin