Re: [libvirt] [PATCH 0/4] snapshot: optimize qemu relationship traversal

After working with ESX and VBox, I realized that a tweak to how snapshot relationships are stored would speed things up from O(n^2) to O(n). The hash table must be kept for name lookup, but the speedup comes by tracking relationships with each snapshot rather than crawling the entire hash table rebuilding those relations for every operation that needs particular relations.