I have a hypervisor with 5 VMs running with libvirt. All on Leap 42.1. I am
using the following code to back up the qcow2 from the VMs:

virsh snapshot-create-as --domain ${domain} snapshot_${TODAY} --disk-only
--atomic --quiesce
# create tarball of qcow2
virsh blockcommit ${domain} vda --active --pivot
virsh snapshot-delete ${domain}.snapshot_${TODAY} --metadata
rm ${domain}.snapshot_${TODAY}

Since the update from 13.2 to Leap though, I noticed that the virsh blockcommit
command fails with the following error:

error: failed to pivot job for disk vda
error: block copy still active: disk 'vda' not ready for pivot yet

I can't fully reproduce it though, it happens to three of my VMs. Let me know
if I can provide more info