1 /* 2 * Blockdev HMP commands 3 * 4 * Authors: 5 * Anthony Liguori <aliguori@us.ibm.com> 6 * 7 * Copyright (c) 2003-2008 Fabrice Bellard 8 * 9 * This work is licensed under the terms of the GNU GPL, version 2. 10 * See the COPYING file in the top-level directory. 11 * Contributions after 2012-01-13 are licensed under the terms of the 12 * GNU GPL, version 2 or (at your option) any later version. 13 * 14 * This file incorporates work covered by the following copyright and 15 * permission notice: 16 * 17 * Copyright (c) 2003-2008 Fabrice Bellard 18 * 19 * Permission is hereby granted, free of charge, to any person obtaining a copy 20 * of this software and associated documentation files (the "Software"), to deal 21 * in the Software without restriction, including without limitation the rights 22 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 23 * copies of the Software, and to permit persons to whom the Software is 24 * furnished to do so, subject to the following conditions: 25 * 26 * The above copyright notice and this permission notice shall be included in 27 * all copies or substantial portions of the Software. 28 * 29 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 30 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 31 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 32 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 33 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 34 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 35 * THE SOFTWARE. 36 */ 37 38 #include "qemu/osdep.h" 39 #include "hw/boards.h" 40 #include "sysemu/block-backend.h" 41 #include "sysemu/blockdev.h" 42 #include "qapi/qapi-commands-block.h" 43 #include "qapi/qapi-commands-block-export.h" 44 #include "qapi/qmp/qdict.h" 45 #include "qapi/error.h" 46 #include "qapi/qmp/qerror.h" 47 #include "qemu/config-file.h" 48 #include "qemu/option.h" 49 #include "qemu/sockets.h" 50 #include "qemu/cutils.h" 51 #include "qemu/error-report.h" 52 #include "sysemu/sysemu.h" 53 #include "monitor/monitor.h" 54 #include "monitor/hmp.h" 55 #include "block/nbd.h" 56 #include "block/qapi.h" 57 #include "block/block_int.h" 58 #include "block/block-hmp-cmds.h" 59 #include "qemu-io.h" 60 61 static void hmp_drive_add_node(Monitor *mon, const char *optstr) 62 { 63 QemuOpts *opts; 64 QDict *qdict; 65 Error *local_err = NULL; 66 67 opts = qemu_opts_parse_noisily(&qemu_drive_opts, optstr, false); 68 if (!opts) { 69 return; 70 } 71 72 qdict = qemu_opts_to_qdict(opts, NULL); 73 74 if (!qdict_get_try_str(qdict, "node-name")) { 75 qobject_unref(qdict); 76 error_report("'node-name' needs to be specified"); 77 goto out; 78 } 79 80 BlockDriverState *bs = bds_tree_init(qdict, &local_err); 81 if (!bs) { 82 error_report_err(local_err); 83 goto out; 84 } 85 86 bdrv_set_monitor_owned(bs); 87 out: 88 qemu_opts_del(opts); 89 } 90 91 void hmp_drive_add(Monitor *mon, const QDict *qdict) 92 { 93 Error *err = NULL; 94 DriveInfo *dinfo; 95 QemuOpts *opts; 96 MachineClass *mc; 97 const char *optstr = qdict_get_str(qdict, "opts"); 98 bool node = qdict_get_try_bool(qdict, "node", false); 99 100 if (node) { 101 hmp_drive_add_node(mon, optstr); 102 return; 103 } 104 105 opts = qemu_opts_parse_noisily(qemu_find_opts("drive"), optstr, false); 106 if (!opts) 107 return; 108 109 mc = MACHINE_GET_CLASS(current_machine); 110 dinfo = drive_new(opts, mc->block_default_type, &err); 111 if (err) { 112 error_report_err(err); 113 qemu_opts_del(opts); 114 goto err; 115 } 116 117 if (!dinfo) { 118 return; 119 } 120 121 switch (dinfo->type) { 122 case IF_NONE: 123 monitor_printf(mon, "OK\n"); 124 break; 125 default: 126 monitor_printf(mon, "Can't hot-add drive to type %d\n", dinfo->type); 127 goto err; 128 } 129 return; 130 131 err: 132 if (dinfo) { 133 BlockBackend *blk = blk_by_legacy_dinfo(dinfo); 134 monitor_remove_blk(blk); 135 blk_unref(blk); 136 } 137 } 138 139 void hmp_drive_del(Monitor *mon, const QDict *qdict) 140 { 141 const char *id = qdict_get_str(qdict, "id"); 142 BlockBackend *blk; 143 BlockDriverState *bs; 144 AioContext *aio_context; 145 Error *local_err = NULL; 146 147 bs = bdrv_find_node(id); 148 if (bs) { 149 qmp_blockdev_del(id, &local_err); 150 if (local_err) { 151 error_report_err(local_err); 152 } 153 return; 154 } 155 156 blk = blk_by_name(id); 157 if (!blk) { 158 error_report("Device '%s' not found", id); 159 return; 160 } 161 162 if (!blk_legacy_dinfo(blk)) { 163 error_report("Deleting device added with blockdev-add" 164 " is not supported"); 165 return; 166 } 167 168 aio_context = blk_get_aio_context(blk); 169 aio_context_acquire(aio_context); 170 171 bs = blk_bs(blk); 172 if (bs) { 173 if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { 174 error_report_err(local_err); 175 aio_context_release(aio_context); 176 return; 177 } 178 179 blk_remove_bs(blk); 180 } 181 182 /* Make the BlockBackend and the attached BlockDriverState anonymous */ 183 monitor_remove_blk(blk); 184 185 /* 186 * If this BlockBackend has a device attached to it, its refcount will be 187 * decremented when the device is removed; otherwise we have to do so here. 188 */ 189 if (blk_get_attached_dev(blk)) { 190 /* Further I/O must not pause the guest */ 191 blk_set_on_error(blk, BLOCKDEV_ON_ERROR_REPORT, 192 BLOCKDEV_ON_ERROR_REPORT); 193 } else { 194 blk_unref(blk); 195 } 196 197 aio_context_release(aio_context); 198 } 199 200 void hmp_commit(Monitor *mon, const QDict *qdict) 201 { 202 const char *device = qdict_get_str(qdict, "device"); 203 BlockBackend *blk; 204 int ret; 205 206 if (!strcmp(device, "all")) { 207 ret = blk_commit_all(); 208 } else { 209 BlockDriverState *bs; 210 AioContext *aio_context; 211 212 blk = blk_by_name(device); 213 if (!blk) { 214 error_report("Device '%s' not found", device); 215 return; 216 } 217 if (!blk_is_available(blk)) { 218 error_report("Device '%s' has no medium", device); 219 return; 220 } 221 222 bs = bdrv_skip_implicit_filters(blk_bs(blk)); 223 aio_context = bdrv_get_aio_context(bs); 224 aio_context_acquire(aio_context); 225 226 ret = bdrv_commit(bs); 227 228 aio_context_release(aio_context); 229 } 230 if (ret < 0) { 231 error_report("'commit' error for '%s': %s", device, strerror(-ret)); 232 } 233 } 234 235 void hmp_drive_mirror(Monitor *mon, const QDict *qdict) 236 { 237 const char *filename = qdict_get_str(qdict, "target"); 238 const char *format = qdict_get_try_str(qdict, "format"); 239 bool reuse = qdict_get_try_bool(qdict, "reuse", false); 240 bool full = qdict_get_try_bool(qdict, "full", false); 241 Error *err = NULL; 242 DriveMirror mirror = { 243 .device = (char *)qdict_get_str(qdict, "device"), 244 .target = (char *)filename, 245 .format = (char *)format, 246 .sync = full ? MIRROR_SYNC_MODE_FULL : MIRROR_SYNC_MODE_TOP, 247 .has_mode = true, 248 .mode = reuse ? NEW_IMAGE_MODE_EXISTING : NEW_IMAGE_MODE_ABSOLUTE_PATHS, 249 .unmap = true, 250 }; 251 252 if (!filename) { 253 error_setg(&err, QERR_MISSING_PARAMETER, "target"); 254 goto end; 255 } 256 qmp_drive_mirror(&mirror, &err); 257 end: 258 hmp_handle_error(mon, err); 259 } 260 261 void hmp_drive_backup(Monitor *mon, const QDict *qdict) 262 { 263 const char *device = qdict_get_str(qdict, "device"); 264 const char *filename = qdict_get_str(qdict, "target"); 265 const char *format = qdict_get_try_str(qdict, "format"); 266 bool reuse = qdict_get_try_bool(qdict, "reuse", false); 267 bool full = qdict_get_try_bool(qdict, "full", false); 268 bool compress = qdict_get_try_bool(qdict, "compress", false); 269 Error *err = NULL; 270 DriveBackup backup = { 271 .device = (char *)device, 272 .target = (char *)filename, 273 .format = (char *)format, 274 .sync = full ? MIRROR_SYNC_MODE_FULL : MIRROR_SYNC_MODE_TOP, 275 .has_mode = true, 276 .mode = reuse ? NEW_IMAGE_MODE_EXISTING : NEW_IMAGE_MODE_ABSOLUTE_PATHS, 277 .has_compress = !!compress, 278 .compress = compress, 279 }; 280 281 if (!filename) { 282 error_setg(&err, QERR_MISSING_PARAMETER, "target"); 283 goto end; 284 } 285 286 qmp_drive_backup(&backup, &err); 287 end: 288 hmp_handle_error(mon, err); 289 } 290 291 void hmp_block_job_set_speed(Monitor *mon, const QDict *qdict) 292 { 293 Error *error = NULL; 294 const char *device = qdict_get_str(qdict, "device"); 295 int64_t value = qdict_get_int(qdict, "speed"); 296 297 qmp_block_job_set_speed(device, value, &error); 298 299 hmp_handle_error(mon, error); 300 } 301 302 void hmp_block_job_cancel(Monitor *mon, const QDict *qdict) 303 { 304 Error *error = NULL; 305 const char *device = qdict_get_str(qdict, "device"); 306 bool force = qdict_get_try_bool(qdict, "force", false); 307 308 qmp_block_job_cancel(device, true, force, &error); 309 310 hmp_handle_error(mon, error); 311 } 312 313 void hmp_block_job_pause(Monitor *mon, const QDict *qdict) 314 { 315 Error *error = NULL; 316 const char *device = qdict_get_str(qdict, "device"); 317 318 qmp_block_job_pause(device, &error); 319 320 hmp_handle_error(mon, error); 321 } 322 323 void hmp_block_job_resume(Monitor *mon, const QDict *qdict) 324 { 325 Error *error = NULL; 326 const char *device = qdict_get_str(qdict, "device"); 327 328 qmp_block_job_resume(device, &error); 329 330 hmp_handle_error(mon, error); 331 } 332 333 void hmp_block_job_complete(Monitor *mon, const QDict *qdict) 334 { 335 Error *error = NULL; 336 const char *device = qdict_get_str(qdict, "device"); 337 338 qmp_block_job_complete(device, &error); 339 340 hmp_handle_error(mon, error); 341 } 342 343 void hmp_snapshot_blkdev(Monitor *mon, const QDict *qdict) 344 { 345 const char *device = qdict_get_str(qdict, "device"); 346 const char *filename = qdict_get_try_str(qdict, "snapshot-file"); 347 const char *format = qdict_get_try_str(qdict, "format"); 348 bool reuse = qdict_get_try_bool(qdict, "reuse", false); 349 enum NewImageMode mode; 350 Error *err = NULL; 351 352 if (!filename) { 353 /* 354 * In the future, if 'snapshot-file' is not specified, the snapshot 355 * will be taken internally. Today it's actually required. 356 */ 357 error_setg(&err, QERR_MISSING_PARAMETER, "snapshot-file"); 358 goto end; 359 } 360 361 mode = reuse ? NEW_IMAGE_MODE_EXISTING : NEW_IMAGE_MODE_ABSOLUTE_PATHS; 362 qmp_blockdev_snapshot_sync(device, NULL, filename, NULL, format, 363 true, mode, &err); 364 end: 365 hmp_handle_error(mon, err); 366 } 367 368 void hmp_snapshot_blkdev_internal(Monitor *mon, const QDict *qdict) 369 { 370 const char *device = qdict_get_str(qdict, "device"); 371 const char *name = qdict_get_str(qdict, "name"); 372 Error *err = NULL; 373 374 qmp_blockdev_snapshot_internal_sync(device, name, &err); 375 hmp_handle_error(mon, err); 376 } 377 378 void hmp_snapshot_delete_blkdev_internal(Monitor *mon, const QDict *qdict) 379 { 380 const char *device = qdict_get_str(qdict, "device"); 381 const char *name = qdict_get_str(qdict, "name"); 382 const char *id = qdict_get_try_str(qdict, "id"); 383 Error *err = NULL; 384 385 qmp_blockdev_snapshot_delete_internal_sync(device, id, name, &err); 386 hmp_handle_error(mon, err); 387 } 388 389 void hmp_nbd_server_start(Monitor *mon, const QDict *qdict) 390 { 391 const char *uri = qdict_get_str(qdict, "uri"); 392 bool writable = qdict_get_try_bool(qdict, "writable", false); 393 bool all = qdict_get_try_bool(qdict, "all", false); 394 Error *local_err = NULL; 395 BlockInfoList *block_list, *info; 396 SocketAddress *addr; 397 NbdServerAddOptions export; 398 399 if (writable && !all) { 400 error_setg(&local_err, "-w only valid together with -a"); 401 goto exit; 402 } 403 404 /* First check if the address is valid and start the server. */ 405 addr = socket_parse(uri, &local_err); 406 if (local_err != NULL) { 407 goto exit; 408 } 409 410 nbd_server_start(addr, NULL, NULL, 0, &local_err); 411 qapi_free_SocketAddress(addr); 412 if (local_err != NULL) { 413 goto exit; 414 } 415 416 if (!all) { 417 return; 418 } 419 420 /* Then try adding all block devices. If one fails, close all and 421 * exit. 422 */ 423 block_list = qmp_query_block(NULL); 424 425 for (info = block_list; info; info = info->next) { 426 if (!info->value->inserted) { 427 continue; 428 } 429 430 export = (NbdServerAddOptions) { 431 .device = info->value->device, 432 .has_writable = true, 433 .writable = writable, 434 }; 435 436 qmp_nbd_server_add(&export, &local_err); 437 438 if (local_err != NULL) { 439 qmp_nbd_server_stop(NULL); 440 break; 441 } 442 } 443 444 qapi_free_BlockInfoList(block_list); 445 446 exit: 447 hmp_handle_error(mon, local_err); 448 } 449 450 void hmp_nbd_server_add(Monitor *mon, const QDict *qdict) 451 { 452 const char *device = qdict_get_str(qdict, "device"); 453 const char *name = qdict_get_try_str(qdict, "name"); 454 bool writable = qdict_get_try_bool(qdict, "writable", false); 455 Error *local_err = NULL; 456 457 NbdServerAddOptions export = { 458 .device = (char *) device, 459 .name = (char *) name, 460 .has_writable = true, 461 .writable = writable, 462 }; 463 464 qmp_nbd_server_add(&export, &local_err); 465 hmp_handle_error(mon, local_err); 466 } 467 468 void hmp_nbd_server_remove(Monitor *mon, const QDict *qdict) 469 { 470 const char *name = qdict_get_str(qdict, "name"); 471 bool force = qdict_get_try_bool(qdict, "force", false); 472 Error *err = NULL; 473 474 /* Rely on BLOCK_EXPORT_REMOVE_MODE_SAFE being the default */ 475 qmp_nbd_server_remove(name, force, BLOCK_EXPORT_REMOVE_MODE_HARD, &err); 476 hmp_handle_error(mon, err); 477 } 478 479 void hmp_nbd_server_stop(Monitor *mon, const QDict *qdict) 480 { 481 Error *err = NULL; 482 483 qmp_nbd_server_stop(&err); 484 hmp_handle_error(mon, err); 485 } 486 487 void coroutine_fn hmp_block_resize(Monitor *mon, const QDict *qdict) 488 { 489 const char *device = qdict_get_str(qdict, "device"); 490 int64_t size = qdict_get_int(qdict, "size"); 491 Error *err = NULL; 492 493 qmp_block_resize(device, NULL, size, &err); 494 hmp_handle_error(mon, err); 495 } 496 497 void hmp_block_stream(Monitor *mon, const QDict *qdict) 498 { 499 Error *error = NULL; 500 const char *device = qdict_get_str(qdict, "device"); 501 const char *base = qdict_get_try_str(qdict, "base"); 502 int64_t speed = qdict_get_try_int(qdict, "speed", 0); 503 504 qmp_block_stream(device, device, base, NULL, NULL, NULL, 505 qdict_haskey(qdict, "speed"), speed, 506 true, BLOCKDEV_ON_ERROR_REPORT, NULL, 507 false, false, false, false, &error); 508 509 hmp_handle_error(mon, error); 510 } 511 512 void hmp_block_set_io_throttle(Monitor *mon, const QDict *qdict) 513 { 514 Error *err = NULL; 515 char *device = (char *) qdict_get_str(qdict, "device"); 516 BlockIOThrottle throttle = { 517 .bps = qdict_get_int(qdict, "bps"), 518 .bps_rd = qdict_get_int(qdict, "bps_rd"), 519 .bps_wr = qdict_get_int(qdict, "bps_wr"), 520 .iops = qdict_get_int(qdict, "iops"), 521 .iops_rd = qdict_get_int(qdict, "iops_rd"), 522 .iops_wr = qdict_get_int(qdict, "iops_wr"), 523 }; 524 525 /* 526 * qmp_block_set_io_throttle has separate parameters for the 527 * (deprecated) block device name and the qdev ID but the HMP 528 * version has only one, so we must decide which one to pass. 529 */ 530 if (blk_by_name(device)) { 531 throttle.device = device; 532 } else { 533 throttle.id = device; 534 } 535 536 qmp_block_set_io_throttle(&throttle, &err); 537 hmp_handle_error(mon, err); 538 } 539 540 void hmp_eject(Monitor *mon, const QDict *qdict) 541 { 542 bool force = qdict_get_try_bool(qdict, "force", false); 543 const char *device = qdict_get_str(qdict, "device"); 544 Error *err = NULL; 545 546 qmp_eject(device, NULL, true, force, &err); 547 hmp_handle_error(mon, err); 548 } 549 550 void hmp_qemu_io(Monitor *mon, const QDict *qdict) 551 { 552 BlockBackend *blk = NULL; 553 BlockDriverState *bs = NULL; 554 BlockBackend *local_blk = NULL; 555 AioContext *ctx = NULL; 556 bool qdev = qdict_get_try_bool(qdict, "qdev", false); 557 const char *device = qdict_get_str(qdict, "device"); 558 const char *command = qdict_get_str(qdict, "command"); 559 Error *err = NULL; 560 int ret; 561 562 if (qdev) { 563 blk = blk_by_qdev_id(device, &err); 564 if (!blk) { 565 goto fail; 566 } 567 } else { 568 blk = blk_by_name(device); 569 if (!blk) { 570 bs = bdrv_lookup_bs(NULL, device, &err); 571 if (!bs) { 572 goto fail; 573 } 574 } 575 } 576 577 ctx = blk ? blk_get_aio_context(blk) : bdrv_get_aio_context(bs); 578 aio_context_acquire(ctx); 579 580 if (bs) { 581 blk = local_blk = blk_new(bdrv_get_aio_context(bs), 0, BLK_PERM_ALL); 582 ret = blk_insert_bs(blk, bs, &err); 583 if (ret < 0) { 584 goto fail; 585 } 586 } 587 588 /* 589 * Notably absent: Proper permission management. This is sad, but it seems 590 * almost impossible to achieve without changing the semantics and thereby 591 * limiting the use cases of the qemu-io HMP command. 592 * 593 * In an ideal world we would unconditionally create a new BlockBackend for 594 * qemuio_command(), but we have commands like 'reopen' and want them to 595 * take effect on the exact BlockBackend whose name the user passed instead 596 * of just on a temporary copy of it. 597 * 598 * Another problem is that deleting the temporary BlockBackend involves 599 * draining all requests on it first, but some qemu-iotests cases want to 600 * issue multiple aio_read/write requests and expect them to complete in 601 * the background while the monitor has already returned. 602 * 603 * This is also what prevents us from saving the original permissions and 604 * restoring them later: We can't revoke permissions until all requests 605 * have completed, and we don't know when that is nor can we really let 606 * anything else run before we have revoken them to avoid race conditions. 607 * 608 * What happens now is that command() in qemu-io-cmds.c can extend the 609 * permissions if necessary for the qemu-io command. And they simply stay 610 * extended, possibly resulting in a read-only guest device keeping write 611 * permissions. Ugly, but it appears to be the lesser evil. 612 */ 613 qemuio_command(blk, command); 614 615 fail: 616 blk_unref(local_blk); 617 618 if (ctx) { 619 aio_context_release(ctx); 620 } 621 622 hmp_handle_error(mon, err); 623 } 624 625 static void print_block_info(Monitor *mon, BlockInfo *info, 626 BlockDeviceInfo *inserted, bool verbose) 627 { 628 ImageInfo *image_info; 629 630 assert(!info || !info->inserted || info->inserted == inserted); 631 632 if (info && *info->device) { 633 monitor_puts(mon, info->device); 634 if (inserted && inserted->node_name) { 635 monitor_printf(mon, " (%s)", inserted->node_name); 636 } 637 } else { 638 assert(info || inserted); 639 monitor_puts(mon, 640 inserted && inserted->node_name ? inserted->node_name 641 : info && info->qdev ? info->qdev 642 : "<anonymous>"); 643 } 644 645 if (inserted) { 646 monitor_printf(mon, ": %s (%s%s%s)\n", 647 inserted->file, 648 inserted->drv, 649 inserted->ro ? ", read-only" : "", 650 inserted->encrypted ? ", encrypted" : ""); 651 } else { 652 monitor_printf(mon, ": [not inserted]\n"); 653 } 654 655 if (info) { 656 if (info->qdev) { 657 monitor_printf(mon, " Attached to: %s\n", info->qdev); 658 } 659 if (info->has_io_status && info->io_status != BLOCK_DEVICE_IO_STATUS_OK) { 660 monitor_printf(mon, " I/O status: %s\n", 661 BlockDeviceIoStatus_str(info->io_status)); 662 } 663 664 if (info->removable) { 665 monitor_printf(mon, " Removable device: %slocked, tray %s\n", 666 info->locked ? "" : "not ", 667 info->tray_open ? "open" : "closed"); 668 } 669 } 670 671 672 if (!inserted) { 673 return; 674 } 675 676 monitor_printf(mon, " Cache mode: %s%s%s\n", 677 inserted->cache->writeback ? "writeback" : "writethrough", 678 inserted->cache->direct ? ", direct" : "", 679 inserted->cache->no_flush ? ", ignore flushes" : ""); 680 681 if (inserted->backing_file) { 682 monitor_printf(mon, 683 " Backing file: %s " 684 "(chain depth: %" PRId64 ")\n", 685 inserted->backing_file, 686 inserted->backing_file_depth); 687 } 688 689 if (inserted->detect_zeroes != BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF) { 690 monitor_printf(mon, " Detect zeroes: %s\n", 691 BlockdevDetectZeroesOptions_str(inserted->detect_zeroes)); 692 } 693 694 if (inserted->bps || inserted->bps_rd || inserted->bps_wr || 695 inserted->iops || inserted->iops_rd || inserted->iops_wr) 696 { 697 monitor_printf(mon, " I/O throttling: bps=%" PRId64 698 " bps_rd=%" PRId64 " bps_wr=%" PRId64 699 " bps_max=%" PRId64 700 " bps_rd_max=%" PRId64 701 " bps_wr_max=%" PRId64 702 " iops=%" PRId64 " iops_rd=%" PRId64 703 " iops_wr=%" PRId64 704 " iops_max=%" PRId64 705 " iops_rd_max=%" PRId64 706 " iops_wr_max=%" PRId64 707 " iops_size=%" PRId64 708 " group=%s\n", 709 inserted->bps, 710 inserted->bps_rd, 711 inserted->bps_wr, 712 inserted->bps_max, 713 inserted->bps_rd_max, 714 inserted->bps_wr_max, 715 inserted->iops, 716 inserted->iops_rd, 717 inserted->iops_wr, 718 inserted->iops_max, 719 inserted->iops_rd_max, 720 inserted->iops_wr_max, 721 inserted->iops_size, 722 inserted->group); 723 } 724 725 if (verbose) { 726 monitor_printf(mon, "\nImages:\n"); 727 image_info = inserted->image; 728 while (1) { 729 bdrv_node_info_dump(qapi_ImageInfo_base(image_info), 0, false); 730 if (image_info->backing_image) { 731 image_info = image_info->backing_image; 732 } else { 733 break; 734 } 735 } 736 } 737 } 738 739 void hmp_info_block(Monitor *mon, const QDict *qdict) 740 { 741 BlockInfoList *block_list, *info; 742 BlockDeviceInfoList *blockdev_list, *blockdev; 743 const char *device = qdict_get_try_str(qdict, "device"); 744 bool verbose = qdict_get_try_bool(qdict, "verbose", false); 745 bool nodes = qdict_get_try_bool(qdict, "nodes", false); 746 bool printed = false; 747 748 /* Print BlockBackend information */ 749 if (!nodes) { 750 block_list = qmp_query_block(NULL); 751 } else { 752 block_list = NULL; 753 } 754 755 for (info = block_list; info; info = info->next) { 756 if (device && strcmp(device, info->value->device)) { 757 continue; 758 } 759 760 if (info != block_list) { 761 monitor_printf(mon, "\n"); 762 } 763 764 print_block_info(mon, info->value, info->value->inserted, 765 verbose); 766 printed = true; 767 } 768 769 qapi_free_BlockInfoList(block_list); 770 771 if ((!device && !nodes) || printed) { 772 return; 773 } 774 775 /* Print node information */ 776 blockdev_list = qmp_query_named_block_nodes(false, false, NULL); 777 for (blockdev = blockdev_list; blockdev; blockdev = blockdev->next) { 778 assert(blockdev->value->node_name); 779 if (device && strcmp(device, blockdev->value->node_name)) { 780 continue; 781 } 782 783 if (blockdev != blockdev_list) { 784 monitor_printf(mon, "\n"); 785 } 786 787 print_block_info(mon, NULL, blockdev->value, verbose); 788 } 789 qapi_free_BlockDeviceInfoList(blockdev_list); 790 } 791 792 void hmp_info_blockstats(Monitor *mon, const QDict *qdict) 793 { 794 BlockStatsList *stats_list, *stats; 795 796 stats_list = qmp_query_blockstats(false, false, NULL); 797 798 for (stats = stats_list; stats; stats = stats->next) { 799 if (!stats->value->device) { 800 continue; 801 } 802 803 monitor_printf(mon, "%s:", stats->value->device); 804 monitor_printf(mon, " rd_bytes=%" PRId64 805 " wr_bytes=%" PRId64 806 " rd_operations=%" PRId64 807 " wr_operations=%" PRId64 808 " flush_operations=%" PRId64 809 " wr_total_time_ns=%" PRId64 810 " rd_total_time_ns=%" PRId64 811 " flush_total_time_ns=%" PRId64 812 " rd_merged=%" PRId64 813 " wr_merged=%" PRId64 814 " idle_time_ns=%" PRId64 815 "\n", 816 stats->value->stats->rd_bytes, 817 stats->value->stats->wr_bytes, 818 stats->value->stats->rd_operations, 819 stats->value->stats->wr_operations, 820 stats->value->stats->flush_operations, 821 stats->value->stats->wr_total_time_ns, 822 stats->value->stats->rd_total_time_ns, 823 stats->value->stats->flush_total_time_ns, 824 stats->value->stats->rd_merged, 825 stats->value->stats->wr_merged, 826 stats->value->stats->idle_time_ns); 827 } 828 829 qapi_free_BlockStatsList(stats_list); 830 } 831 832 void hmp_info_block_jobs(Monitor *mon, const QDict *qdict) 833 { 834 BlockJobInfoList *list; 835 836 list = qmp_query_block_jobs(&error_abort); 837 838 if (!list) { 839 monitor_printf(mon, "No active jobs\n"); 840 return; 841 } 842 843 while (list) { 844 if (strcmp(list->value->type, "stream") == 0) { 845 monitor_printf(mon, "Streaming device %s: Completed %" PRId64 846 " of %" PRId64 " bytes, speed limit %" PRId64 847 " bytes/s\n", 848 list->value->device, 849 list->value->offset, 850 list->value->len, 851 list->value->speed); 852 } else { 853 monitor_printf(mon, "Type %s, device %s: Completed %" PRId64 854 " of %" PRId64 " bytes, speed limit %" PRId64 855 " bytes/s\n", 856 list->value->type, 857 list->value->device, 858 list->value->offset, 859 list->value->len, 860 list->value->speed); 861 } 862 list = list->next; 863 } 864 865 qapi_free_BlockJobInfoList(list); 866 } 867 868 void hmp_info_snapshots(Monitor *mon, const QDict *qdict) 869 { 870 BlockDriverState *bs, *bs1; 871 BdrvNextIterator it1; 872 QEMUSnapshotInfo *sn_tab, *sn; 873 bool no_snapshot = true; 874 int nb_sns, i; 875 int total; 876 int *global_snapshots; 877 AioContext *aio_context; 878 879 typedef struct SnapshotEntry { 880 QEMUSnapshotInfo sn; 881 QTAILQ_ENTRY(SnapshotEntry) next; 882 } SnapshotEntry; 883 884 typedef struct ImageEntry { 885 const char *imagename; 886 QTAILQ_ENTRY(ImageEntry) next; 887 QTAILQ_HEAD(, SnapshotEntry) snapshots; 888 } ImageEntry; 889 890 QTAILQ_HEAD(, ImageEntry) image_list = 891 QTAILQ_HEAD_INITIALIZER(image_list); 892 893 ImageEntry *image_entry, *next_ie; 894 SnapshotEntry *snapshot_entry; 895 Error *err = NULL; 896 897 bs = bdrv_all_find_vmstate_bs(NULL, false, NULL, &err); 898 if (!bs) { 899 error_report_err(err); 900 return; 901 } 902 aio_context = bdrv_get_aio_context(bs); 903 904 aio_context_acquire(aio_context); 905 nb_sns = bdrv_snapshot_list(bs, &sn_tab); 906 aio_context_release(aio_context); 907 908 if (nb_sns < 0) { 909 monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); 910 return; 911 } 912 913 for (bs1 = bdrv_first(&it1); bs1; bs1 = bdrv_next(&it1)) { 914 int bs1_nb_sns = 0; 915 ImageEntry *ie; 916 SnapshotEntry *se; 917 AioContext *ctx = bdrv_get_aio_context(bs1); 918 919 aio_context_acquire(ctx); 920 if (bdrv_can_snapshot(bs1)) { 921 sn = NULL; 922 bs1_nb_sns = bdrv_snapshot_list(bs1, &sn); 923 if (bs1_nb_sns > 0) { 924 no_snapshot = false; 925 ie = g_new0(ImageEntry, 1); 926 ie->imagename = bdrv_get_device_name(bs1); 927 QTAILQ_INIT(&ie->snapshots); 928 QTAILQ_INSERT_TAIL(&image_list, ie, next); 929 for (i = 0; i < bs1_nb_sns; i++) { 930 se = g_new0(SnapshotEntry, 1); 931 se->sn = sn[i]; 932 QTAILQ_INSERT_TAIL(&ie->snapshots, se, next); 933 } 934 } 935 g_free(sn); 936 } 937 aio_context_release(ctx); 938 } 939 940 if (no_snapshot) { 941 monitor_printf(mon, "There is no snapshot available.\n"); 942 return; 943 } 944 945 global_snapshots = g_new0(int, nb_sns); 946 total = 0; 947 for (i = 0; i < nb_sns; i++) { 948 SnapshotEntry *next_sn; 949 if (bdrv_all_has_snapshot(sn_tab[i].name, false, NULL, NULL) == 1) { 950 global_snapshots[total] = i; 951 total++; 952 QTAILQ_FOREACH(image_entry, &image_list, next) { 953 QTAILQ_FOREACH_SAFE(snapshot_entry, &image_entry->snapshots, 954 next, next_sn) { 955 if (!strcmp(sn_tab[i].name, snapshot_entry->sn.name)) { 956 QTAILQ_REMOVE(&image_entry->snapshots, snapshot_entry, 957 next); 958 g_free(snapshot_entry); 959 } 960 } 961 } 962 } 963 } 964 monitor_printf(mon, "List of snapshots present on all disks:\n"); 965 966 if (total > 0) { 967 bdrv_snapshot_dump(NULL); 968 monitor_printf(mon, "\n"); 969 for (i = 0; i < total; i++) { 970 sn = &sn_tab[global_snapshots[i]]; 971 /* 972 * The ID is not guaranteed to be the same on all images, so 973 * overwrite it. 974 */ 975 pstrcpy(sn->id_str, sizeof(sn->id_str), "--"); 976 bdrv_snapshot_dump(sn); 977 monitor_printf(mon, "\n"); 978 } 979 } else { 980 monitor_printf(mon, "None\n"); 981 } 982 983 QTAILQ_FOREACH(image_entry, &image_list, next) { 984 if (QTAILQ_EMPTY(&image_entry->snapshots)) { 985 continue; 986 } 987 monitor_printf(mon, 988 "\nList of partial (non-loadable) snapshots on '%s':\n", 989 image_entry->imagename); 990 bdrv_snapshot_dump(NULL); 991 monitor_printf(mon, "\n"); 992 QTAILQ_FOREACH(snapshot_entry, &image_entry->snapshots, next) { 993 bdrv_snapshot_dump(&snapshot_entry->sn); 994 monitor_printf(mon, "\n"); 995 } 996 } 997 998 QTAILQ_FOREACH_SAFE(image_entry, &image_list, next, next_ie) { 999 SnapshotEntry *next_sn; 1000 QTAILQ_FOREACH_SAFE(snapshot_entry, &image_entry->snapshots, next, 1001 next_sn) { 1002 g_free(snapshot_entry); 1003 } 1004 g_free(image_entry); 1005 } 1006 g_free(sn_tab); 1007 g_free(global_snapshots); 1008 } 1009 1010 void hmp_change_medium(Monitor *mon, const char *device, const char *target, 1011 const char *arg, const char *read_only, bool force, 1012 Error **errp) 1013 { 1014 ERRP_GUARD(); 1015 BlockdevChangeReadOnlyMode read_only_mode = 0; 1016 1017 if (read_only) { 1018 read_only_mode = 1019 qapi_enum_parse(&BlockdevChangeReadOnlyMode_lookup, 1020 read_only, 1021 BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN, errp); 1022 if (*errp) { 1023 return; 1024 } 1025 } 1026 1027 qmp_blockdev_change_medium(device, NULL, target, arg, true, force, 1028 !!read_only, read_only_mode, errp); 1029 } 1030