tests/qemu-iotests/142.out

   1 QA output created by 142
   2 Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=134217728
   3 Formatting 'TEST_DIR/t.IMGFMT.snap', fmt=IMGFMT size=134217728
   4 Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/t.IMGFMT.base
   5
   6 === Simple test for all cache modes ===
   7
   8 Testing: -drive file=TEST_DIR/t.qcow2,cache=none
   9 QEMU X.Y.Z monitor - type 'help' for more information
  10 (qemu) q\e[K\e[Dqu\e[K\e[D\e[Dqui\e[K\e[D\e[D\e[Dquit\e[K
  11
  12 Testing: -drive file=TEST_DIR/t.qcow2,cache=directsync
  13 QEMU X.Y.Z monitor - type 'help' for more information
  14 (qemu) q\e[K\e[Dqu\e[K\e[D\e[Dqui\e[K\e[D\e[D\e[Dquit\e[K
  15
  16 Testing: -drive file=TEST_DIR/t.qcow2,cache=writeback
  17 QEMU X.Y.Z monitor - type 'help' for more information
  18 (qemu) q\e[K\e[Dqu\e[K\e[D\e[Dqui\e[K\e[D\e[D\e[Dquit\e[K
  19
  20 Testing: -drive file=TEST_DIR/t.qcow2,cache=writethrough
  21 QEMU X.Y.Z monitor - type 'help' for more information
  22 (qemu) q\e[K\e[Dqu\e[K\e[D\e[Dqui\e[K\e[D\e[D\e[Dquit\e[K
  23
  24 Testing: -drive file=TEST_DIR/t.qcow2,cache=unsafe
  25 QEMU X.Y.Z monitor - type 'help' for more information
  26 (qemu) q\e[K\e[Dqu\e[K\e[D\e[Dqui\e[K\e[D\e[D\e[Dquit\e[K
  27
  28 Testing: -drive file=TEST_DIR/t.qcow2,cache=invalid_value
  29 QEMU_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
  37 cache.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     Cache mode:       writeback, direct
  43
  44 cache.direct=on on file
  45     Cache mode:       writeback
  46     Cache mode:       writeback
  47     Cache mode:       writeback, direct
  48     Cache mode:       writeback
  49     Cache mode:       writeback
  50
  51 cache.direct=on on backing
  52     Cache mode:       writeback
  53     Cache mode:       writeback
  54     Cache mode:       writeback
  55     Cache mode:       writeback, direct
  56     Cache mode:       writeback, direct
  57
  58 cache.direct=on on backing-file
  59     Cache mode:       writeback
  60     Cache mode:       writeback
  61     Cache mode:       writeback
  62     Cache mode:       writeback
  63     Cache mode:       writeback, direct
  64
  65
  66 cache.writeback=off on none0
  67     Cache mode:       writethrough
  68     Cache mode:       writeback
  69     Cache mode:       writeback
  70     Cache mode:       writeback
  71     Cache mode:       writeback
  72
  73 cache.writeback=off on file
  74 QEMU_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: Block protocol 'file' doesn't support the option 'cache.writeback'
  75
  76 cache.writeback=off on backing
  77 QEMU_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: Block format 'qcow2' does not support the option 'cache.writeback'
  78
  79 cache.writeback=off on backing-file
  80 QEMU_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: Block protocol 'file' doesn't support the option 'cache.writeback'
  81
  82
  83 cache.no-flush=on on none0
  84     Cache mode:       writeback, ignore flushes
  85     Cache mode:       writeback, ignore flushes
  86     Cache mode:       writeback, ignore flushes
  87     Cache mode:       writeback, ignore flushes
  88     Cache mode:       writeback, ignore flushes
  89
  90 cache.no-flush=on on file
  91     Cache mode:       writeback
  92     Cache mode:       writeback
  93     Cache mode:       writeback, ignore flushes
  94     Cache mode:       writeback
  95     Cache mode:       writeback
  96
  97 cache.no-flush=on on backing
  98     Cache mode:       writeback
  99     Cache mode:       writeback
 100     Cache mode:       writeback
 101     Cache mode:       writeback, ignore flushes
 102     Cache mode:       writeback, ignore flushes
 103
 104 cache.no-flush=on on backing-file
 105     Cache mode:       writeback
 106     Cache mode:       writeback
 107     Cache mode:       writeback
 108     Cache mode:       writeback
 109     Cache mode:       writeback, ignore flushes
 110
 111 --- Cache modes after reopen (live snapshot) ---
 112
 113 cache.direct=on on none0
 114     Cache mode:       writeback, direct
 115     Cache mode:       writeback, direct
 116     Cache mode:       writeback, direct
 117     Cache mode:       writeback, direct
 118     Cache mode:       writeback, direct
 119
 120 cache.direct=on on file
 121     Cache mode:       writeback
 122     Cache mode:       writeback
 123     Cache mode:       writeback, direct
 124     Cache mode:       writeback
 125     Cache mode:       writeback
 126
 127 cache.direct=on on backing
 128     Cache mode:       writeback
 129     Cache mode:       writeback
 130     Cache mode:       writeback
 131     Cache mode:       writeback, direct
 132     Cache mode:       writeback, direct
 133
 134 cache.direct=on on backing-file
 135     Cache mode:       writeback
 136     Cache mode:       writeback
 137     Cache mode:       writeback
 138     Cache mode:       writeback
 139     Cache mode:       writeback, direct
 140
 141
 142 cache.writeback=off on none0
 143     Cache mode:       writethrough
 144     Cache mode:       writeback
 145     Cache mode:       writeback
 146     Cache mode:       writeback
 147     Cache mode:       writeback
 148
 149 cache.writeback=off on file
 150 QEMU_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: Block protocol 'file' doesn't support the option 'cache.writeback'
 151
 152 cache.writeback=off on backing
 153 QEMU_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: Block format 'qcow2' does not support the option 'cache.writeback'
 154
 155 cache.writeback=off on backing-file
 156 QEMU_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: Block protocol 'file' doesn't support the option 'cache.writeback'
 157
 158
 159 cache.no-flush=on on none0
 160     Cache mode:       writeback, ignore flushes
 161     Cache mode:       writeback, ignore flushes
 162     Cache mode:       writeback, ignore flushes
 163     Cache mode:       writeback, ignore flushes
 164     Cache mode:       writeback, ignore flushes
 165
 166 cache.no-flush=on on file
 167     Cache mode:       writeback
 168     Cache mode:       writeback
 169     Cache mode:       writeback, ignore flushes
 170     Cache mode:       writeback
 171     Cache mode:       writeback
 172
 173 cache.no-flush=on on backing
 174     Cache mode:       writeback
 175     Cache mode:       writeback
 176     Cache mode:       writeback
 177     Cache mode:       writeback, ignore flushes
 178     Cache mode:       writeback, ignore flushes
 179
 180 cache.no-flush=on on backing-file
 181     Cache mode:       writeback
 182     Cache mode:       writeback
 183     Cache mode:       writeback
 184     Cache mode:       writeback
 185     Cache mode:       writeback, ignore flushes
 186
 187 --- Change cache modes with reopen (qemu-io command, flags) ---
 188
 189 cache.direct=on on none0
 190     Cache mode:       writeback, direct
 191     Cache mode:       writeback, direct
 192     Cache mode:       writeback, direct
 193     Cache mode:       writeback, direct
 194     Cache mode:       writeback, direct
 195
 196 cache.direct=on on file
 197     Cache mode:       writeback, direct
 198     Cache mode:       writeback, direct
 199     Cache mode:       writeback, direct
 200     Cache mode:       writeback, direct
 201     Cache mode:       writeback, direct
 202
 203 cache.direct=on on backing
 204     Cache mode:       writeback, direct
 205     Cache mode:       writeback, direct
 206     Cache mode:       writeback, direct
 207     Cache mode:       writeback, direct
 208     Cache mode:       writeback, direct
 209
 210 cache.direct=on on backing-file
 211     Cache mode:       writeback, direct
 212     Cache mode:       writeback, direct
 213     Cache mode:       writeback, direct
 214     Cache mode:       writeback, direct
 215     Cache mode:       writeback, direct
 216
 217
 218 cache.writeback=off on none0
 219     Cache mode:       writeback, direct
 220     Cache mode:       writeback, direct
 221     Cache mode:       writeback, direct
 222     Cache mode:       writeback, direct
 223     Cache mode:       writeback, direct
 224
 225 cache.writeback=off on file
 226 QEMU_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: Block protocol 'file' doesn't support the option 'cache.writeback'
 227
 228 cache.writeback=off on backing
 229 QEMU_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: Block format 'qcow2' does not support the option 'cache.writeback'
 230
 231 cache.writeback=off on backing-file
 232 QEMU_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: Block protocol 'file' doesn't support the option 'cache.writeback'
 233
 234
 235 cache.no-flush=on on none0
 236     Cache mode:       writeback, direct
 237     Cache mode:       writeback, direct
 238     Cache mode:       writeback, direct
 239     Cache mode:       writeback, direct
 240     Cache mode:       writeback, direct
 241
 242 cache.no-flush=on on file
 243     Cache mode:       writeback, direct
 244     Cache mode:       writeback, direct
 245     Cache mode:       writeback, direct, ignore flushes
 246     Cache mode:       writeback, direct
 247     Cache mode:       writeback, direct
 248
 249 cache.no-flush=on on backing
 250     Cache mode:       writeback, direct
 251     Cache mode:       writeback, direct
 252     Cache mode:       writeback, direct
 253     Cache mode:       writeback, direct, ignore flushes
 254     Cache mode:       writeback, direct, ignore flushes
 255
 256 cache.no-flush=on on backing-file
 257     Cache mode:       writeback, direct
 258     Cache mode:       writeback, direct
 259     Cache mode:       writeback, direct
 260     Cache mode:       writeback, direct
 261     Cache mode:       writeback, direct, ignore flushes
 262
 263 --- Change cache modes with reopen (qemu-io command, options) ---
 264
 265 cache.direct=on on none0
 266     Cache mode:       writeback, direct
 267     Cache mode:       writeback, direct
 268     Cache mode:       writeback, direct
 269     Cache mode:       writeback, direct
 270     Cache mode:       writeback, direct
 271
 272 cache.direct=on on file
 273     Cache mode:       writeback, direct
 274     Cache mode:       writeback, direct
 275     Cache mode:       writeback, direct
 276     Cache mode:       writeback, direct
 277     Cache mode:       writeback, direct
 278
 279 cache.direct=on on backing
 280     Cache mode:       writeback, direct
 281     Cache mode:       writeback, direct
 282     Cache mode:       writeback, direct
 283     Cache mode:       writeback, direct
 284     Cache mode:       writeback, direct
 285
 286 cache.direct=on on backing-file
 287     Cache mode:       writeback, direct
 288     Cache mode:       writeback, direct
 289     Cache mode:       writeback, direct
 290     Cache mode:       writeback, direct
 291     Cache mode:       writeback, direct
 292
 293
 294 cache.writeback=off on none0
 295     Cache mode:       writethrough, direct
 296     Cache mode:       writeback, direct
 297     Cache mode:       writeback, direct
 298     Cache mode:       writeback, direct
 299     Cache mode:       writeback, direct
 300
 301 cache.writeback=off on file
 302 QEMU_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: Block protocol 'file' doesn't support the option 'cache.writeback'
 303
 304 cache.writeback=off on backing
 305 QEMU_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: Block format 'qcow2' does not support the option 'cache.writeback'
 306
 307 cache.writeback=off on backing-file
 308 QEMU_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: Block protocol 'file' doesn't support the option 'cache.writeback'
 309
 310
 311 cache.no-flush=on on none0
 312     Cache mode:       writeback, direct, ignore flushes
 313     Cache mode:       writeback, direct, ignore flushes
 314     Cache mode:       writeback, direct, ignore flushes
 315     Cache mode:       writeback, direct, ignore flushes
 316     Cache mode:       writeback, direct, ignore flushes
 317
 318 cache.no-flush=on on file
 319     Cache mode:       writeback, direct
 320     Cache mode:       writeback, direct
 321     Cache mode:       writeback, direct, ignore flushes
 322     Cache mode:       writeback, direct
 323     Cache mode:       writeback, direct
 324
 325 cache.no-flush=on on backing
 326     Cache mode:       writeback, direct
 327     Cache mode:       writeback, direct
 328     Cache mode:       writeback, direct
 329     Cache mode:       writeback, direct, ignore flushes
 330     Cache mode:       writeback, direct, ignore flushes
 331
 332 cache.no-flush=on on backing-file
 333     Cache mode:       writeback, direct
 334     Cache mode:       writeback, direct
 335     Cache mode:       writeback, direct
 336     Cache mode:       writeback, direct
 337     Cache mode:       writeback, direct, ignore flushes
 338
 339 --- Change cache modes after snapshot ---
 340
 341 cache.direct=on on none0
 342     Cache mode:       writeback, direct
 343     Cache mode:       writeback, direct
 344     Cache mode:       writeback, direct
 345     Cache mode:       writeback, direct
 346     Cache mode:       writeback, direct
 347
 348 cache.direct=on on file
 349     Cache mode:       writeback, direct
 350     Cache mode:       writeback
 351     Cache mode:       writeback, direct
 352     Cache mode:       writeback
 353     Cache mode:       writeback
 354
 355 cache.direct=on on backing
 356     Cache mode:       writeback, direct
 357     Cache mode:       writeback
 358     Cache mode:       writeback
 359     Cache mode:       writeback, direct
 360     Cache mode:       writeback, direct
 361
 362 cache.direct=on on backing-file
 363     Cache mode:       writeback, direct
 364     Cache mode:       writeback
 365     Cache mode:       writeback
 366     Cache mode:       writeback
 367     Cache mode:       writeback, direct
 368
 369
 370 cache.writeback=off on none0
 371     Cache mode:       writeback, direct
 372     Cache mode:       writeback
 373     Cache mode:       writeback
 374     Cache mode:       writeback
 375     Cache mode:       writeback
 376
 377 cache.writeback=off on file
 378 QEMU_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: Block protocol 'file' doesn't support the option 'cache.writeback'
 379
 380 cache.writeback=off on backing
 381 QEMU_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: Block format 'qcow2' does not support the option 'cache.writeback'
 382
 383 cache.writeback=off on backing-file
 384 QEMU_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: Block protocol 'file' doesn't support the option 'cache.writeback'
 385
 386
 387 cache.no-flush=on on none0
 388     Cache mode:       writeback, direct
 389     Cache mode:       writeback, ignore flushes
 390     Cache mode:       writeback, ignore flushes
 391     Cache mode:       writeback, ignore flushes
 392     Cache mode:       writeback, ignore flushes
 393
 394 cache.no-flush=on on file
 395     Cache mode:       writeback, direct
 396     Cache mode:       writeback
 397     Cache mode:       writeback, ignore flushes
 398     Cache mode:       writeback
 399     Cache mode:       writeback
 400
 401 cache.no-flush=on on backing
 402     Cache mode:       writeback, direct
 403     Cache mode:       writeback
 404     Cache mode:       writeback
 405     Cache mode:       writeback, ignore flushes
 406     Cache mode:       writeback, ignore flushes
 407
 408 cache.no-flush=on on backing-file
 409     Cache mode:       writeback, direct
 410     Cache mode:       writeback
 411     Cache mode:       writeback
 412     Cache mode:       writeback
 413     Cache mode:       writeback, ignore flushes
 414
 415 --- Change cache mode in parent, child has explicit option in JSON ---
 416
 417     Cache mode:       writeback, direct, ignore flushes
 418     Cache mode:       writeback, direct, ignore flushes
 419     Cache mode:       writeback, direct, ignore flushes
 420     Cache mode:       writeback, ignore flushes
 421
 422 === Check that referenced BDSes don't inherit ===
 423
 424
 425 --- Configure cache modes on the command line ---
 426
 427 cache.direct=on on blk
 428     Cache mode:       writeback, direct
 429     Cache mode:       writeback
 430     Cache mode:       writeback
 431     Cache mode:       writeback
 432
 433 cache.direct=on on file
 434     Cache mode:       writeback
 435     Cache mode:       writeback, direct
 436     Cache mode:       writeback
 437     Cache mode:       writeback
 438
 439 cache.direct=on on backing
 440     Cache mode:       writeback
 441     Cache mode:       writeback
 442     Cache mode:       writeback, direct
 443     Cache mode:       writeback
 444
 445 cache.direct=on on backing-file
 446     Cache mode:       writeback
 447     Cache mode:       writeback
 448     Cache mode:       writeback
 449     Cache mode:       writeback, direct
 450
 451
 452 cache.writeback=off on blk
 453     Cache mode:       writeback
 454     Cache mode:       writeback
 455     Cache mode:       writeback
 456     Cache mode:       writeback
 457
 458 cache.writeback=off on file
 459     Cache mode:       writeback
 460     Cache mode:       writeback
 461     Cache mode:       writeback
 462     Cache mode:       writeback
 463
 464 cache.writeback=off on backing
 465     Cache mode:       writeback
 466     Cache mode:       writeback
 467     Cache mode:       writeback
 468     Cache mode:       writeback
 469
 470 cache.writeback=off on backing-file
 471     Cache mode:       writeback
 472     Cache mode:       writeback
 473     Cache mode:       writeback
 474     Cache mode:       writeback
 475
 476
 477 cache.no-flush=on on blk
 478     Cache mode:       writeback, ignore flushes
 479     Cache mode:       writeback
 480     Cache mode:       writeback
 481     Cache mode:       writeback
 482
 483 cache.no-flush=on on file
 484     Cache mode:       writeback
 485     Cache mode:       writeback, ignore flushes
 486     Cache mode:       writeback
 487     Cache mode:       writeback
 488
 489 cache.no-flush=on on backing
 490     Cache mode:       writeback
 491     Cache mode:       writeback
 492     Cache mode:       writeback, ignore flushes
 493     Cache mode:       writeback
 494
 495 cache.no-flush=on on backing-file
 496     Cache mode:       writeback
 497     Cache mode:       writeback
 498     Cache mode:       writeback
 499     Cache mode:       writeback, ignore flushes
 500
 501 --- Cache modes after reopen (live snapshot) ---
 502
 503 cache.direct=on on blk
 504     Cache mode:       writeback, direct
 505     Cache mode:       writeback, direct
 506     Cache mode:       writeback
 507     Cache mode:       writeback
 508     Cache mode:       writeback
 509
 510 cache.direct=on on file
 511     Cache mode:       writeback
 512     Cache mode:       writeback
 513     Cache mode:       writeback, direct
 514     Cache mode:       writeback
 515     Cache mode:       writeback
 516
 517 cache.direct=on on backing
 518     Cache mode:       writeback
 519     Cache mode:       writeback
 520     Cache mode:       writeback
 521     Cache mode:       writeback, direct
 522     Cache mode:       writeback
 523
 524 cache.direct=on on backing-file
 525     Cache mode:       writeback
 526     Cache mode:       writeback
 527     Cache mode:       writeback
 528     Cache mode:       writeback
 529     Cache mode:       writeback, direct
 530
 531
 532 cache.writeback=off on blk
 533     Cache mode:       writethrough
 534     Cache mode:       writeback
 535     Cache mode:       writeback
 536     Cache mode:       writeback
 537     Cache mode:       writeback
 538
 539 cache.writeback=off on file
 540     Cache mode:       writeback
 541     Cache mode:       writeback
 542     Cache mode:       writeback
 543     Cache mode:       writeback
 544     Cache mode:       writeback
 545
 546 cache.writeback=off on backing
 547     Cache mode:       writeback
 548     Cache mode:       writeback
 549     Cache mode:       writeback
 550     Cache mode:       writeback
 551     Cache mode:       writeback
 552
 553 cache.writeback=off on backing-file
 554     Cache mode:       writeback
 555     Cache mode:       writeback
 556     Cache mode:       writeback
 557     Cache mode:       writeback
 558     Cache mode:       writeback
 559
 560
 561 cache.no-flush=on on blk
 562     Cache mode:       writeback, ignore flushes
 563     Cache mode:       writeback, ignore flushes
 564     Cache mode:       writeback
 565     Cache mode:       writeback
 566     Cache mode:       writeback
 567
 568 cache.no-flush=on on file
 569     Cache mode:       writeback
 570     Cache mode:       writeback
 571     Cache mode:       writeback, ignore flushes
 572     Cache mode:       writeback
 573     Cache mode:       writeback
 574
 575 cache.no-flush=on on backing
 576     Cache mode:       writeback
 577     Cache mode:       writeback
 578     Cache mode:       writeback
 579     Cache mode:       writeback, ignore flushes
 580     Cache mode:       writeback
 581
 582 cache.no-flush=on on backing-file
 583     Cache mode:       writeback
 584     Cache mode:       writeback
 585     Cache mode:       writeback
 586     Cache mode:       writeback
 587     Cache mode:       writeback, ignore flushes
 588
 589 --- Change cache modes with reopen (qemu-io command, flags) ---
 590
 591 cache.direct=on on blk
 592     Cache mode:       writeback, direct
 593     Cache mode:       writeback
 594     Cache mode:       writeback
 595     Cache mode:       writeback
 596
 597 cache.direct=on on file
 598     Cache mode:       writeback, direct
 599     Cache mode:       writeback, direct
 600     Cache mode:       writeback
 601     Cache mode:       writeback
 602
 603 cache.direct=on on backing
 604     Cache mode:       writeback, direct
 605     Cache mode:       writeback
 606     Cache mode:       writeback, direct
 607     Cache mode:       writeback
 608
 609 cache.direct=on on backing-file
 610     Cache mode:       writeback, direct
 611     Cache mode:       writeback
 612     Cache mode:       writeback
 613     Cache mode:       writeback, direct
 614
 615
 616 cache.writeback=off on blk
 617     Cache mode:       writeback, direct
 618     Cache mode:       writeback
 619     Cache mode:       writeback
 620     Cache mode:       writeback
 621
 622 cache.writeback=off on file
 623     Cache mode:       writeback, direct
 624     Cache mode:       writeback
 625     Cache mode:       writeback
 626     Cache mode:       writeback
 627
 628 cache.writeback=off on backing
 629     Cache mode:       writeback, direct
 630     Cache mode:       writeback
 631     Cache mode:       writeback
 632     Cache mode:       writeback
 633
 634 cache.writeback=off on backing-file
 635     Cache mode:       writeback, direct
 636     Cache mode:       writeback
 637     Cache mode:       writeback
 638     Cache mode:       writeback
 639
 640
 641 cache.no-flush=on on blk
 642     Cache mode:       writeback, direct
 643     Cache mode:       writeback
 644     Cache mode:       writeback
 645     Cache mode:       writeback
 646
 647 cache.no-flush=on on file
 648     Cache mode:       writeback, direct
 649     Cache mode:       writeback, ignore flushes
 650     Cache mode:       writeback
 651     Cache mode:       writeback
 652
 653 cache.no-flush=on on backing
 654     Cache mode:       writeback, direct
 655     Cache mode:       writeback
 656     Cache mode:       writeback, ignore flushes
 657     Cache mode:       writeback
 658
 659 cache.no-flush=on on backing-file
 660     Cache mode:       writeback, direct
 661     Cache mode:       writeback
 662     Cache mode:       writeback
 663     Cache mode:       writeback, ignore flushes
 664
 665 === Reopening children instead of the root ===
 666
 667
 668 --- Basic reopen ---
 669
 670 cache.direct=on on none0
 671     Cache mode:       writeback, direct
 672     Cache mode:       writeback, direct
 673     Cache mode:       writeback, direct
 674     Cache mode:       writeback, direct
 675     Cache mode:       writeback, direct
 676
 677 cache.direct=on on file
 678     Cache mode:       writeback
 679     Cache mode:       writeback
 680     Cache mode:       writeback, direct
 681     Cache mode:       writeback, direct
 682     Cache mode:       writeback, direct
 683
 684 cache.direct=on on backing
 685     Cache mode:       writeback
 686     Cache mode:       writeback
 687     Cache mode:       writeback
 688     Cache mode:       writeback, direct
 689     Cache mode:       writeback, direct
 690
 691 cache.direct=on on backing-file
 692     Cache mode:       writeback
 693     Cache mode:       writeback
 694     Cache mode:       writeback
 695     Cache mode:       writeback, direct
 696     Cache mode:       writeback, direct
 697
 698
 699 cache.writeback=off on none0
 700     Cache mode:       writethrough
 701     Cache mode:       writeback
 702     Cache mode:       writeback
 703     Cache mode:       writeback, direct
 704     Cache mode:       writeback, direct
 705
 706 cache.writeback=off on file
 707 QEMU_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: Block protocol 'file' doesn't support the option 'cache.writeback'
 708
 709 cache.writeback=off on backing
 710 QEMU_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: Block format 'qcow2' does not support the option 'cache.writeback'
 711
 712 cache.writeback=off on backing-file
 713 QEMU_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: Block protocol 'file' doesn't support the option 'cache.writeback'
 714
 715
 716 cache.no-flush=on on none0
 717     Cache mode:       writeback, ignore flushes
 718     Cache mode:       writeback, ignore flushes
 719     Cache mode:       writeback, ignore flushes
 720     Cache mode:       writeback, direct, ignore flushes
 721     Cache mode:       writeback, direct, ignore flushes
 722
 723 cache.no-flush=on on file
 724     Cache mode:       writeback
 725     Cache mode:       writeback
 726     Cache mode:       writeback, ignore flushes
 727     Cache mode:       writeback, direct
 728     Cache mode:       writeback, direct
 729
 730 cache.no-flush=on on backing
 731     Cache mode:       writeback
 732     Cache mode:       writeback
 733     Cache mode:       writeback
 734     Cache mode:       writeback, direct, ignore flushes
 735     Cache mode:       writeback, direct, ignore flushes
 736
 737 cache.no-flush=on on backing-file
 738     Cache mode:       writeback
 739     Cache mode:       writeback
 740     Cache mode:       writeback
 741     Cache mode:       writeback, direct
 742     Cache mode:       writeback, direct, ignore flushes
 743
 744 --- Change cache mode after reopening child ---
 745
 746     Cache mode:       writeback, direct
 747     Cache mode:       writeback
 748     Cache mode:       writeback, direct
 749     Cache mode:       writeback, ignore flushes
 750 *** done