[ { "type": "block-dirty-bitmap-merge", "data": { "node": "libvirt-3-format", "target": "a", "bitmaps": [ { "node": "libvirt-3-format", "name": "b" } ] } }, { "type": "block-dirty-bitmap-remove", "data": { "node": "libvirt-3-format", "name": "b" } } ]