Libvirt snapshot delete cascade
When you want to delete/undefine a VM with libvirt, you must clean all the snapshots. You can make a bash loop or just the “--children” parameter:
[erwan@host1 ~]# virsh snapshot-list compute18
Name Creation Time State
------------------------------------------------------------
20180225-1-fedora-clean 2018-02-25 23:40:24 +0100 shutoff
20180226-1-ansible-app 2018-02-26 00:16:01 +0100 shutoff
20180304-1-ansible-app 2018-03-04 22:30:01 +0100 shutoff
20180305-1-resync 2018-03-05 21:45:55 +0100 shutoff
[erwan@host1 ~]$ sudo virsh snapshot-delete --children compute18 20180225-1-fedora-clean
Domain snapshot 20180225-1-fedora-clean deleted
[erwan@host1 ~]$ sudo virsh snapshot-list compute18
Name Creation Time State
------------------------------------------------------------
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