On Wed, May 29, 2019 at 13:35:12 +0200, jarek wrote: > Hi, > > W dniu 29.05.2019, śro o godzinie 09∶55 +0200, użytkownik Peter Krempa > napisał: > > I understand, that it is not possible to make a snapshot of > > > physical > > > device, but it is enough for me to take snapshot of vda. How to > > > force > > > virsh to ignore sda ? > > > > --diskspec sda,snapshot=no > > now it works, thanks a lot!
By the way. You can also create a snapshot of sda, but you need to specify the destination of the overlay manually e.g.: --diskspec sda,file=/path/to/sda.snap.qcow2 Libvirt just does not want to generate the filename for block devices since we can't know where to put the snapshot.
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