xref: /openbmc/qemu/tests/qemu-iotests/142.out (revision 63785678) 
1QA output created by 142
2Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728
3Formatting 'TEST_DIR/t.IMGFMT.snap', fmt=IMGFMT size=134217728
4Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base
5
6=== Simple test for all cache modes ===
7
8Testing: -drive file=TEST_DIR/t.qcow2,cache=none
9QEMU X.Y.Z monitor - type 'help' for more information
10(qemu) qququiquit
11
12Testing: -drive file=TEST_DIR/t.qcow2,cache=directsync
13QEMU X.Y.Z monitor - type 'help' for more information
14(qemu) qququiquit
15
16Testing: -drive file=TEST_DIR/t.qcow2,cache=writeback
17QEMU X.Y.Z monitor - type 'help' for more information
18(qemu) qququiquit
19
20Testing: -drive file=TEST_DIR/t.qcow2,cache=writethrough
21QEMU X.Y.Z monitor - type 'help' for more information
22(qemu) qququiquit
23
24Testing: -drive file=TEST_DIR/t.qcow2,cache=unsafe
25QEMU X.Y.Z monitor - type 'help' for more information
26(qemu) qququiquit
27
28Testing: -drive file=TEST_DIR/t.qcow2,cache=invalid_value
29QEMU_PROG: -drive file=TEST_DIR/t.qcow2,cache=invalid_value: invalid cache option
30
31
32=== Check inheritance of cache modes ===
33
34
35--- Configure cache modes on the command line ---
36
37cache.direct=on on none0
38    Cache mode:       writeback, direct
39    Cache mode:       writeback, direct
40    Cache mode:       writeback, direct
41    Cache mode:       writeback, direct
42
43cache.direct=on on file
44    Cache mode:       writeback
45    Cache mode:       writeback, direct
46    Cache mode:       writeback
47    Cache mode:       writeback
48
49cache.direct=on on backing
50    Cache mode:       writeback
51    Cache mode:       writeback
52    Cache mode:       writeback, direct
53    Cache mode:       writeback, direct
54
55cache.direct=on on backing-file
56    Cache mode:       writeback
57    Cache mode:       writeback
58    Cache mode:       writeback
59    Cache mode:       writeback, direct
60
61
62cache.writeback=off on none0
63    Cache mode:       writethrough
64    Cache mode:       writeback
65    Cache mode:       writeback
66    Cache mode:       writeback
67
68cache.writeback=off on file
69QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Can't set writethrough mode except for the root
70
71cache.writeback=off on backing
72QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Can't set writethrough mode except for the root
73
74cache.writeback=off on backing-file
75QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Can't set writethrough mode except for the root
76
77
78cache.no-flush=on on none0
79    Cache mode:       writeback, ignore flushes
80    Cache mode:       writeback, ignore flushes
81    Cache mode:       writeback, ignore flushes
82    Cache mode:       writeback, ignore flushes
83
84cache.no-flush=on on file
85    Cache mode:       writeback
86    Cache mode:       writeback, ignore flushes
87    Cache mode:       writeback
88    Cache mode:       writeback
89
90cache.no-flush=on on backing
91    Cache mode:       writeback
92    Cache mode:       writeback
93    Cache mode:       writeback, ignore flushes
94    Cache mode:       writeback, ignore flushes
95
96cache.no-flush=on on backing-file
97    Cache mode:       writeback
98    Cache mode:       writeback
99    Cache mode:       writeback
100    Cache mode:       writeback, ignore flushes
101
102--- Cache modes after reopen (live snapshot) ---
103
104cache.direct=on on none0
105    Cache mode:       writeback, direct
106    Cache mode:       writeback, direct
107    Cache mode:       writeback, direct
108    Cache mode:       writeback, direct
109    Cache mode:       writeback, direct
110
111cache.direct=on on file
112    Cache mode:       writeback
113    Cache mode:       writeback
114    Cache mode:       writeback, direct
115    Cache mode:       writeback
116    Cache mode:       writeback
117
118cache.direct=on on backing
119    Cache mode:       writeback
120    Cache mode:       writeback
121    Cache mode:       writeback
122    Cache mode:       writeback, direct
123    Cache mode:       writeback, direct
124
125cache.direct=on on backing-file
126    Cache mode:       writeback
127    Cache mode:       writeback
128    Cache mode:       writeback
129    Cache mode:       writeback
130    Cache mode:       writeback, direct
131
132
133cache.writeback=off on none0
134    Cache mode:       writethrough
135    Cache mode:       writethrough
136    Cache mode:       writeback
137    Cache mode:       writeback
138    Cache mode:       writeback
139
140cache.writeback=off on file
141QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Can't set writethrough mode except for the root
142
143cache.writeback=off on backing
144QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Can't set writethrough mode except for the root
145
146cache.writeback=off on backing-file
147QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Can't set writethrough mode except for the root
148
149
150cache.no-flush=on on none0
151    Cache mode:       writeback, ignore flushes
152    Cache mode:       writeback, ignore flushes
153    Cache mode:       writeback, ignore flushes
154    Cache mode:       writeback, ignore flushes
155    Cache mode:       writeback, ignore flushes
156
157cache.no-flush=on on file
158    Cache mode:       writeback
159    Cache mode:       writeback
160    Cache mode:       writeback, ignore flushes
161    Cache mode:       writeback
162    Cache mode:       writeback
163
164cache.no-flush=on on backing
165    Cache mode:       writeback
166    Cache mode:       writeback
167    Cache mode:       writeback
168    Cache mode:       writeback, ignore flushes
169    Cache mode:       writeback, ignore flushes
170
171cache.no-flush=on on backing-file
172    Cache mode:       writeback
173    Cache mode:       writeback
174    Cache mode:       writeback
175    Cache mode:       writeback
176    Cache mode:       writeback, ignore flushes
177
178--- Change cache modes with reopen (qemu-io command, flags) ---
179
180cache.direct=on on none0
181    Cache mode:       writeback, direct
182    Cache mode:       writeback, direct
183    Cache mode:       writeback, direct
184    Cache mode:       writeback, direct
185
186cache.direct=on on file
187    Cache mode:       writeback, direct
188    Cache mode:       writeback, direct
189    Cache mode:       writeback, direct
190    Cache mode:       writeback, direct
191
192cache.direct=on on backing
193    Cache mode:       writeback, direct
194    Cache mode:       writeback, direct
195    Cache mode:       writeback, direct
196    Cache mode:       writeback, direct
197
198cache.direct=on on backing-file
199    Cache mode:       writeback, direct
200    Cache mode:       writeback, direct
201    Cache mode:       writeback, direct
202    Cache mode:       writeback, direct
203
204
205cache.writeback=off on none0
206    Cache mode:       writeback, direct
207    Cache mode:       writeback, direct
208    Cache mode:       writeback, direct
209    Cache mode:       writeback, direct
210
211cache.writeback=off on file
212QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Can't set writethrough mode except for the root
213
214cache.writeback=off on backing
215QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Can't set writethrough mode except for the root
216
217cache.writeback=off on backing-file
218QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Can't set writethrough mode except for the root
219
220
221cache.no-flush=on on none0
222    Cache mode:       writeback, direct
223    Cache mode:       writeback, direct
224    Cache mode:       writeback, direct
225    Cache mode:       writeback, direct
226
227cache.no-flush=on on file
228    Cache mode:       writeback, direct
229    Cache mode:       writeback, direct, ignore flushes
230    Cache mode:       writeback, direct
231    Cache mode:       writeback, direct
232
233cache.no-flush=on on backing
234    Cache mode:       writeback, direct
235    Cache mode:       writeback, direct
236    Cache mode:       writeback, direct, ignore flushes
237    Cache mode:       writeback, direct, ignore flushes
238
239cache.no-flush=on on backing-file
240    Cache mode:       writeback, direct
241    Cache mode:       writeback, direct
242    Cache mode:       writeback, direct
243    Cache mode:       writeback, direct, ignore flushes
244
245--- Change cache modes with reopen (qemu-io command, options) ---
246
247cache.direct=on on none0
248    Cache mode:       writeback, direct
249    Cache mode:       writeback, direct
250    Cache mode:       writeback, direct
251    Cache mode:       writeback, direct
252
253cache.direct=on on file
254    Cache mode:       writeback, direct
255    Cache mode:       writeback, direct
256    Cache mode:       writeback, direct
257    Cache mode:       writeback, direct
258
259cache.direct=on on backing
260    Cache mode:       writeback, direct
261    Cache mode:       writeback, direct
262    Cache mode:       writeback, direct
263    Cache mode:       writeback, direct
264
265cache.direct=on on backing-file
266    Cache mode:       writeback, direct
267    Cache mode:       writeback, direct
268    Cache mode:       writeback, direct
269    Cache mode:       writeback, direct
270
271
272cache.writeback=off on none0
273    Cache mode:       writethrough, direct
274    Cache mode:       writeback, direct
275    Cache mode:       writeback, direct
276    Cache mode:       writeback, direct
277
278cache.writeback=off on file
279QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Can't set writethrough mode except for the root
280
281cache.writeback=off on backing
282QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Can't set writethrough mode except for the root
283
284cache.writeback=off on backing-file
285QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Can't set writethrough mode except for the root
286
287
288cache.no-flush=on on none0
289    Cache mode:       writeback, direct, ignore flushes
290    Cache mode:       writeback, direct, ignore flushes
291    Cache mode:       writeback, direct, ignore flushes
292    Cache mode:       writeback, direct, ignore flushes
293
294cache.no-flush=on on file
295    Cache mode:       writeback, direct
296    Cache mode:       writeback, direct, ignore flushes
297    Cache mode:       writeback, direct
298    Cache mode:       writeback, direct
299
300cache.no-flush=on on backing
301    Cache mode:       writeback, direct
302    Cache mode:       writeback, direct
303    Cache mode:       writeback, direct, ignore flushes
304    Cache mode:       writeback, direct, ignore flushes
305
306cache.no-flush=on on backing-file
307    Cache mode:       writeback, direct
308    Cache mode:       writeback, direct
309    Cache mode:       writeback, direct
310    Cache mode:       writeback, direct, ignore flushes
311
312--- Change cache modes after snapshot ---
313
314cache.direct=on on none0
315    Cache mode:       writeback, direct
316    Cache mode:       writeback, direct
317    Cache mode:       writeback, direct
318    Cache mode:       writeback, direct
319    Cache mode:       writeback, direct
320
321cache.direct=on on file
322    Cache mode:       writeback, direct
323    Cache mode:       writeback
324    Cache mode:       writeback, direct
325    Cache mode:       writeback
326    Cache mode:       writeback
327
328cache.direct=on on backing
329    Cache mode:       writeback, direct
330    Cache mode:       writeback
331    Cache mode:       writeback
332    Cache mode:       writeback, direct
333    Cache mode:       writeback, direct
334
335cache.direct=on on backing-file
336    Cache mode:       writeback, direct
337    Cache mode:       writeback
338    Cache mode:       writeback
339    Cache mode:       writeback
340    Cache mode:       writeback, direct
341
342
343cache.writeback=off on none0
344    Cache mode:       writeback, direct
345    Cache mode:       writethrough
346    Cache mode:       writeback
347    Cache mode:       writeback
348    Cache mode:       writeback
349
350cache.writeback=off on file
351QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Can't set writethrough mode except for the root
352
353cache.writeback=off on backing
354QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Can't set writethrough mode except for the root
355
356cache.writeback=off on backing-file
357QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Can't set writethrough mode except for the root
358
359
360cache.no-flush=on on none0
361    Cache mode:       writeback, direct
362    Cache mode:       writeback, ignore flushes
363    Cache mode:       writeback, ignore flushes
364    Cache mode:       writeback, ignore flushes
365    Cache mode:       writeback, ignore flushes
366
367cache.no-flush=on on file
368    Cache mode:       writeback, direct
369    Cache mode:       writeback
370    Cache mode:       writeback, ignore flushes
371    Cache mode:       writeback
372    Cache mode:       writeback
373
374cache.no-flush=on on backing
375    Cache mode:       writeback, direct
376    Cache mode:       writeback
377    Cache mode:       writeback
378    Cache mode:       writeback, ignore flushes
379    Cache mode:       writeback, ignore flushes
380
381cache.no-flush=on on backing-file
382    Cache mode:       writeback, direct
383    Cache mode:       writeback
384    Cache mode:       writeback
385    Cache mode:       writeback
386    Cache mode:       writeback, ignore flushes
387
388--- Change cache mode in parent, child has explicit option in JSON ---
389
390    Cache mode:       writethrough, direct, ignore flushes
391    Cache mode:       writeback, direct, ignore flushes
392    Cache mode:       writeback, ignore flushes
393
394=== Check that referenced BDSes don't inherit ===
395
396
397--- Configure cache modes on the command line ---
398
399cache.direct=on on blk
400    Cache mode:       writeback, direct
401    Cache mode:       writeback
402    Cache mode:       writeback
403    Cache mode:       writeback
404
405cache.direct=on on file
406    Cache mode:       writeback
407    Cache mode:       writeback, direct
408    Cache mode:       writeback
409    Cache mode:       writeback
410
411cache.direct=on on backing
412    Cache mode:       writeback
413    Cache mode:       writeback
414    Cache mode:       writeback, direct
415    Cache mode:       writeback
416
417cache.direct=on on backing-file
418    Cache mode:       writeback
419    Cache mode:       writeback
420    Cache mode:       writeback
421    Cache mode:       writeback, direct
422
423
424cache.writeback=off on blk
425    Cache mode:       writethrough
426    Cache mode:       writeback
427    Cache mode:       writeback
428    Cache mode:       writeback
429
430cache.writeback=off on file
431    Cache mode:       writeback
432    Cache mode:       writethrough
433    Cache mode:       writeback
434    Cache mode:       writeback
435
436cache.writeback=off on backing
437    Cache mode:       writeback
438    Cache mode:       writeback
439    Cache mode:       writethrough
440    Cache mode:       writeback
441
442cache.writeback=off on backing-file
443    Cache mode:       writeback
444    Cache mode:       writeback
445    Cache mode:       writeback
446    Cache mode:       writethrough
447
448
449cache.no-flush=on on blk
450    Cache mode:       writeback, ignore flushes
451    Cache mode:       writeback
452    Cache mode:       writeback
453    Cache mode:       writeback
454
455cache.no-flush=on on file
456    Cache mode:       writeback
457    Cache mode:       writeback, ignore flushes
458    Cache mode:       writeback
459    Cache mode:       writeback
460
461cache.no-flush=on on backing
462    Cache mode:       writeback
463    Cache mode:       writeback
464    Cache mode:       writeback, ignore flushes
465    Cache mode:       writeback
466
467cache.no-flush=on on backing-file
468    Cache mode:       writeback
469    Cache mode:       writeback
470    Cache mode:       writeback
471    Cache mode:       writeback, ignore flushes
472
473--- Cache modes after reopen (live snapshot) ---
474
475cache.direct=on on blk
476    Cache mode:       writeback, direct
477    Cache mode:       writeback, direct
478    Cache mode:       writeback
479    Cache mode:       writeback
480    Cache mode:       writeback
481
482cache.direct=on on file
483    Cache mode:       writeback
484    Cache mode:       writeback
485    Cache mode:       writeback, direct
486    Cache mode:       writeback
487    Cache mode:       writeback
488
489cache.direct=on on backing
490    Cache mode:       writeback
491    Cache mode:       writeback
492    Cache mode:       writeback
493    Cache mode:       writeback, direct
494    Cache mode:       writeback
495
496cache.direct=on on backing-file
497    Cache mode:       writeback
498    Cache mode:       writeback
499    Cache mode:       writeback
500    Cache mode:       writeback
501    Cache mode:       writeback, direct
502
503
504cache.writeback=off on blk
505    Cache mode:       writethrough
506    Cache mode:       writethrough
507    Cache mode:       writeback
508    Cache mode:       writeback
509    Cache mode:       writeback
510
511cache.writeback=off on file
512    Cache mode:       writeback
513    Cache mode:       writeback
514    Cache mode:       writethrough
515    Cache mode:       writeback
516    Cache mode:       writeback
517
518cache.writeback=off on backing
519    Cache mode:       writeback
520    Cache mode:       writeback
521    Cache mode:       writeback
522    Cache mode:       writethrough
523    Cache mode:       writeback
524
525cache.writeback=off on backing-file
526    Cache mode:       writeback
527    Cache mode:       writeback
528    Cache mode:       writeback
529    Cache mode:       writeback
530    Cache mode:       writethrough
531
532
533cache.no-flush=on on blk
534    Cache mode:       writeback, ignore flushes
535    Cache mode:       writeback, ignore flushes
536    Cache mode:       writeback
537    Cache mode:       writeback
538    Cache mode:       writeback
539
540cache.no-flush=on on file
541    Cache mode:       writeback
542    Cache mode:       writeback
543    Cache mode:       writeback, ignore flushes
544    Cache mode:       writeback
545    Cache mode:       writeback
546
547cache.no-flush=on on backing
548    Cache mode:       writeback
549    Cache mode:       writeback
550    Cache mode:       writeback
551    Cache mode:       writeback, ignore flushes
552    Cache mode:       writeback
553
554cache.no-flush=on on backing-file
555    Cache mode:       writeback
556    Cache mode:       writeback
557    Cache mode:       writeback
558    Cache mode:       writeback
559    Cache mode:       writeback, ignore flushes
560
561--- Change cache modes with reopen (qemu-io command, flags) ---
562
563cache.direct=on on blk
564    Cache mode:       writeback, direct
565    Cache mode:       writeback
566    Cache mode:       writeback
567    Cache mode:       writeback
568
569cache.direct=on on file
570    Cache mode:       writeback, direct
571    Cache mode:       writeback, direct
572    Cache mode:       writeback
573    Cache mode:       writeback
574
575cache.direct=on on backing
576    Cache mode:       writeback, direct
577    Cache mode:       writeback
578    Cache mode:       writeback, direct
579    Cache mode:       writeback
580
581cache.direct=on on backing-file
582    Cache mode:       writeback, direct
583    Cache mode:       writeback
584    Cache mode:       writeback
585    Cache mode:       writeback, direct
586
587
588cache.writeback=off on blk
589    Cache mode:       writeback, direct
590    Cache mode:       writeback
591    Cache mode:       writeback
592    Cache mode:       writeback
593
594cache.writeback=off on file
595    Cache mode:       writeback, direct
596    Cache mode:       writethrough
597    Cache mode:       writeback
598    Cache mode:       writeback
599
600cache.writeback=off on backing
601    Cache mode:       writeback, direct
602    Cache mode:       writeback
603    Cache mode:       writethrough
604    Cache mode:       writeback
605
606cache.writeback=off on backing-file
607    Cache mode:       writeback, direct
608    Cache mode:       writeback
609    Cache mode:       writeback
610    Cache mode:       writethrough
611
612
613cache.no-flush=on on blk
614    Cache mode:       writeback, direct
615    Cache mode:       writeback
616    Cache mode:       writeback
617    Cache mode:       writeback
618
619cache.no-flush=on on file
620    Cache mode:       writeback, direct
621    Cache mode:       writeback, ignore flushes
622    Cache mode:       writeback
623    Cache mode:       writeback
624
625cache.no-flush=on on backing
626    Cache mode:       writeback, direct
627    Cache mode:       writeback
628    Cache mode:       writeback, ignore flushes
629    Cache mode:       writeback
630
631cache.no-flush=on on backing-file
632    Cache mode:       writeback, direct
633    Cache mode:       writeback
634    Cache mode:       writeback
635    Cache mode:       writeback, ignore flushes
636
637=== Reopening children instead of the root ===
638
639
640--- Basic reopen ---
641
642cache.direct=on on none0
643    Cache mode:       writeback, direct
644    Cache mode:       writeback, direct
645    Cache mode:       writeback, direct
646    Cache mode:       writeback, direct
647
648cache.direct=on on file
649    Cache mode:       writeback
650    Cache mode:       writeback, direct
651    Cache mode:       writeback, direct
652    Cache mode:       writeback, direct
653
654cache.direct=on on backing
655    Cache mode:       writeback
656    Cache mode:       writeback
657    Cache mode:       writeback, direct
658    Cache mode:       writeback, direct
659
660cache.direct=on on backing-file
661    Cache mode:       writeback
662    Cache mode:       writeback
663    Cache mode:       writeback, direct
664    Cache mode:       writeback, direct
665
666
667cache.writeback=off on none0
668    Cache mode:       writethrough
669    Cache mode:       writeback
670    Cache mode:       writeback, direct
671    Cache mode:       writeback, direct
672
673cache.writeback=off on file
674QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,file.cache.writeback=off: Can't set writethrough mode except for the root
675
676cache.writeback=off on backing
677QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.cache.writeback=off: Could not open backing file: Can't set writethrough mode except for the root
678
679cache.writeback=off on backing-file
680QEMU_PROG: -drive if=none,file=TEST_DIR/t.qcow2,backing.file.filename=TEST_DIR/t.qcow2.base,node-name=image,backing.node-name=backing,backing.file.node-name=backing-file,file.node-name=file,backing.file.cache.writeback=off: Could not open backing file: Can't set writethrough mode except for the root
681
682
683cache.no-flush=on on none0
684    Cache mode:       writeback, ignore flushes
685    Cache mode:       writeback, ignore flushes
686    Cache mode:       writeback, direct, ignore flushes
687    Cache mode:       writeback, direct, ignore flushes
688
689cache.no-flush=on on file
690    Cache mode:       writeback
691    Cache mode:       writeback, ignore flushes
692    Cache mode:       writeback, direct
693    Cache mode:       writeback, direct
694
695cache.no-flush=on on backing
696    Cache mode:       writeback
697    Cache mode:       writeback
698    Cache mode:       writeback, direct, ignore flushes
699    Cache mode:       writeback, direct, ignore flushes
700
701cache.no-flush=on on backing-file
702    Cache mode:       writeback
703    Cache mode:       writeback
704    Cache mode:       writeback, direct
705    Cache mode:       writeback, direct, ignore flushes
706
707--- Change cache mode after reopening child ---
708
709    Cache mode:       writeback, direct
710    Cache mode:       writethrough
711    Cache mode:       writeback, direct
712    Cache mode:       writeback, ignore flushes
713*** done
714