[fedora-virt] How to revert an external snapshot

[Dario Lesca]

I have generate an external snapshot with this command:

>  vm='win7-64'
>  
>  virsh snapshot-create-as "$vm" "$vm-snap1" "snap1
> description" \
>    --diskspec vda,file="/virt/$vm-snap1.qcow2" \
>    --disk-only --atomic 
My virsh / libvirt is the last from Fedora 21

>  [root@dodo:/virt]# virsh --version
>  1.2.9.2 
Now I have this situation:

>  [root@dodo:/virt]# ll win7-64*
>  -rw-r--r-- 1 qemu qemu 17182753280  4 mar 14.14 win7-64.qcow2
>  -rw-r--r-- 1 root root   558628864  4 mar 14.35 win7-64-snap1.qcow2
>  
>  root@dodo:/virt]# virsh snapshot-list win7-64
>   Nome                 Creation Time             Stato
>  ------------------------------------------------------------
>   win7-64-snap1        2015-03-04 14:21:15 +0100 shutoff 
But if I run the revert command this is the result:

>  [root@dodo:/virt]# virsh snapshot-revert win7-64 win7-64-snap1
>  errore: unsupported configuration: revert to external snapshot not supported yet 
There is some way to revert my vm to previous state?

Many thanks for help.

-- 
Dario Lesca
(inviato dal mio Linux Fedora 21 con Gnome 3.14)