| QA output created by 043 | 
 | Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 | 
 |  | 
 | == backing file references self == | 
 | qemu-img: Backing file 'TEST_DIR/t.IMGFMT' creates an infinite loop. | 
 | Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 | 
 | Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base | 
 |  | 
 | == parent references self == | 
 | qemu-img: Backing file 'TEST_DIR/t.IMGFMT' creates an infinite loop. | 
 | Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 | 
 | Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.1.base | 
 | Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.2.base | 
 | Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.3.base | 
 |  | 
 | == ancestor references another ancestor == | 
 | qemu-img: Backing file 'TEST_DIR/t.IMGFMT.2.base' creates an infinite loop. | 
 | Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 | 
 | Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.1.base | 
 | Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.2.base | 
 |  | 
 | == finite chain of length 3 (human) == | 
 | image: TEST_DIR/t.IMGFMT | 
 | file format: IMGFMT | 
 | virtual size: 128M (134217728 bytes) | 
 | cluster_size: 65536 | 
 | backing file: TEST_DIR/t.IMGFMT.2.base | 
 |  | 
 | image: TEST_DIR/t.IMGFMT.2.base | 
 | file format: IMGFMT | 
 | virtual size: 128M (134217728 bytes) | 
 | cluster_size: 65536 | 
 | backing file: TEST_DIR/t.IMGFMT.1.base | 
 |  | 
 | image: TEST_DIR/t.IMGFMT.1.base | 
 | file format: IMGFMT | 
 | virtual size: 128M (134217728 bytes) | 
 | cluster_size: 65536 | 
 |  | 
 | == finite chain of length 3 (json) == | 
 | [ | 
 |     { | 
 |         "virtual-size": 134217728, | 
 |         "filename": "TEST_DIR/t.IMGFMT", | 
 |         "cluster-size": 65536, | 
 |         "format": "IMGFMT", | 
 |         "backing-filename": "TEST_DIR/t.IMGFMT.2.base", | 
 |         "dirty-flag": false | 
 |     }, | 
 |     { | 
 |         "virtual-size": 134217728, | 
 |         "filename": "TEST_DIR/t.IMGFMT.2.base", | 
 |         "cluster-size": 65536, | 
 |         "format": "IMGFMT", | 
 |         "backing-filename": "TEST_DIR/t.IMGFMT.1.base", | 
 |         "dirty-flag": false | 
 |     }, | 
 |     { | 
 |         "virtual-size": 134217728, | 
 |         "filename": "TEST_DIR/t.IMGFMT.1.base", | 
 |         "cluster-size": 65536, | 
 |         "format": "IMGFMT", | 
 |         "dirty-flag": false | 
 |     } | 
 | ] | 
 | *** done |