[libvirt-users] snapshot of a raw file - how to revert ?

[Lentes, Bernd]

----- On Feb 15, 2018, at 12:53 PM, Kashyap Chamarthy kchamart at redhat.com wrote:

> On Thu, Feb 15, 2018 at 11:41:37AM +0100, Lentes, Bernd wrote:
> 
> [...]
> 
>> Hi,
>> 
>> i found that:
>> https://dustymabe.com/2015/01/11/qemu-img-backing-files-a-poor-mans-snapshotrollback/
>> 
>> I tried it and it seemed to work, although my root fs was checked
>> after the commit, anything else seemed to work.  What do you think of
>> this procedure ?
> 
> Instead of 'qemu-img create', I'd suggest using `virsh
> snapshot-create-as` (as shown in my previous email).   This will tell
> libvirt to automatically use the just created QCOW2 overlay.
> 
> But yeah, one useful bit is to use the `virt-xml` tool to point to the
> desired disk image (instead of `virsh edit` that I mentioned in the
> previous email):
> 
>    $ virt-xml F21server --edit target=vda \
>        --disk driver_type=raw,path=./A.raw
> 
> 
> --

Hi Kashyap,

thanks for your quick and detailed answers. Just to be complete.
The procedure in the above mentioned link does work with my old software ?

pc59093:~ # rpm -qa|grep -iE 'libvirt|kvm'
libvirt-cim-0.5.12-0.7.16
libvirt-python-1.2.5-1.102
libvirt-client-1.2.5-15.3
kvm-1.4.2-47.1
sles-kvm_en-pdf-11.4-0.33.1
libvirt-1.2.5-15.3

Bernd
 

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