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 GLOBAL_STATE_CODE(); 148 GRAPH_RDLOCK_GUARD_MAINLOOP(); 149 150 bs = bdrv_find_node(id); 151 if (bs) { 152 qmp_blockdev_del(id, &local_err); 153 if (local_err) { 154 error_report_err(local_err); 155 } 156 return; 157 } 158 159 blk = blk_by_name(id); 160 if (!blk) { 161 error_report("Device '%s' not found", id); 162 return; 163 } 164 165 if (!blk_legacy_dinfo(blk)) { 166 error_report("Deleting device added with blockdev-add" 167 " is not supported"); 168 return; 169 } 170 171 aio_context = blk_get_aio_context(blk); 172 aio_context_acquire(aio_context); 173 174 bs = blk_bs(blk); 175 if (bs) { 176 if (bdrv_op_is_blocked(bs, BLOCK_OP_TYPE_DRIVE_DEL, &local_err)) { 177 error_report_err(local_err); 178 aio_context_release(aio_context); 179 return; 180 } 181 182 blk_remove_bs(blk); 183 } 184 185 /* Make the BlockBackend and the attached BlockDriverState anonymous */ 186 monitor_remove_blk(blk); 187 188 /* 189 * If this BlockBackend has a device attached to it, its refcount will be 190 * decremented when the device is removed; otherwise we have to do so here. 191 */ 192 if (blk_get_attached_dev(blk)) { 193 /* Further I/O must not pause the guest */ 194 blk_set_on_error(blk, BLOCKDEV_ON_ERROR_REPORT, 195 BLOCKDEV_ON_ERROR_REPORT); 196 } else { 197 blk_unref(blk); 198 } 199 200 aio_context_release(aio_context); 201 } 202 203 void hmp_commit(Monitor *mon, const QDict *qdict) 204 { 205 const char *device = qdict_get_str(qdict, "device"); 206 BlockBackend *blk; 207 int ret; 208 209 GLOBAL_STATE_CODE(); 210 GRAPH_RDLOCK_GUARD_MAINLOOP(); 211 212 if (!strcmp(device, "all")) { 213 ret = blk_commit_all(); 214 } else { 215 BlockDriverState *bs; 216 AioContext *aio_context; 217 218 blk = blk_by_name(device); 219 if (!blk) { 220 error_report("Device '%s' not found", device); 221 return; 222 } 223 224 bs = bdrv_skip_implicit_filters(blk_bs(blk)); 225 aio_context = bdrv_get_aio_context(bs); 226 aio_context_acquire(aio_context); 227 228 if (!blk_is_available(blk)) { 229 error_report("Device '%s' has no medium", device); 230 aio_context_release(aio_context); 231 return; 232 } 233 234 ret = bdrv_commit(bs); 235 236 aio_context_release(aio_context); 237 } 238 if (ret < 0) { 239 error_report("'commit' error for '%s': %s", device, strerror(-ret)); 240 } 241 } 242 243 void hmp_drive_mirror(Monitor *mon, const QDict *qdict) 244 { 245 const char *filename = qdict_get_str(qdict, "target"); 246 const char *format = qdict_get_try_str(qdict, "format"); 247 bool reuse = qdict_get_try_bool(qdict, "reuse", false); 248 bool full = qdict_get_try_bool(qdict, "full", false); 249 Error *err = NULL; 250 DriveMirror mirror = { 251 .device = (char *)qdict_get_str(qdict, "device"), 252 .target = (char *)filename, 253 .format = (char *)format, 254 .sync = full ? MIRROR_SYNC_MODE_FULL : MIRROR_SYNC_MODE_TOP, 255 .has_mode = true, 256 .mode = reuse ? NEW_IMAGE_MODE_EXISTING : NEW_IMAGE_MODE_ABSOLUTE_PATHS, 257 .unmap = true, 258 }; 259 260 if (!filename) { 261 error_setg(&err, QERR_MISSING_PARAMETER, "target"); 262 goto end; 263 } 264 qmp_drive_mirror(&mirror, &err); 265 end: 266 hmp_handle_error(mon, err); 267 } 268 269 void hmp_drive_backup(Monitor *mon, const QDict *qdict) 270 { 271 const char *device = qdict_get_str(qdict, "device"); 272 const char *filename = qdict_get_str(qdict, "target"); 273 const char *format = qdict_get_try_str(qdict, "format"); 274 bool reuse = qdict_get_try_bool(qdict, "reuse", false); 275 bool full = qdict_get_try_bool(qdict, "full", false); 276 bool compress = qdict_get_try_bool(qdict, "compress", false); 277 Error *err = NULL; 278 DriveBackup backup = { 279 .device = (char *)device, 280 .target = (char *)filename, 281 .format = (char *)format, 282 .sync = full ? MIRROR_SYNC_MODE_FULL : MIRROR_SYNC_MODE_TOP, 283 .has_mode = true, 284 .mode = reuse ? NEW_IMAGE_MODE_EXISTING : NEW_IMAGE_MODE_ABSOLUTE_PATHS, 285 .has_compress = !!compress, 286 .compress = compress, 287 }; 288 289 if (!filename) { 290 error_setg(&err, QERR_MISSING_PARAMETER, "target"); 291 goto end; 292 } 293 294 qmp_drive_backup(&backup, &err); 295 end: 296 hmp_handle_error(mon, err); 297 } 298 299 void hmp_block_job_set_speed(Monitor *mon, const QDict *qdict) 300 { 301 Error *error = NULL; 302 const char *device = qdict_get_str(qdict, "device"); 303 int64_t value = qdict_get_int(qdict, "speed"); 304 305 qmp_block_job_set_speed(device, value, &error); 306 307 hmp_handle_error(mon, error); 308 } 309 310 void hmp_block_job_cancel(Monitor *mon, const QDict *qdict) 311 { 312 Error *error = NULL; 313 const char *device = qdict_get_str(qdict, "device"); 314 bool force = qdict_get_try_bool(qdict, "force", false); 315 316 qmp_block_job_cancel(device, true, force, &error); 317 318 hmp_handle_error(mon, error); 319 } 320 321 void hmp_block_job_pause(Monitor *mon, const QDict *qdict) 322 { 323 Error *error = NULL; 324 const char *device = qdict_get_str(qdict, "device"); 325 326 qmp_block_job_pause(device, &error); 327 328 hmp_handle_error(mon, error); 329 } 330 331 void hmp_block_job_resume(Monitor *mon, const QDict *qdict) 332 { 333 Error *error = NULL; 334 const char *device = qdict_get_str(qdict, "device"); 335 336 qmp_block_job_resume(device, &error); 337 338 hmp_handle_error(mon, error); 339 } 340 341 void hmp_block_job_complete(Monitor *mon, const QDict *qdict) 342 { 343 Error *error = NULL; 344 const char *device = qdict_get_str(qdict, "device"); 345 346 qmp_block_job_complete(device, &error); 347 348 hmp_handle_error(mon, error); 349 } 350 351 void hmp_snapshot_blkdev(Monitor *mon, const QDict *qdict) 352 { 353 const char *device = qdict_get_str(qdict, "device"); 354 const char *filename = qdict_get_try_str(qdict, "snapshot-file"); 355 const char *format = qdict_get_try_str(qdict, "format"); 356 bool reuse = qdict_get_try_bool(qdict, "reuse", false); 357 enum NewImageMode mode; 358 Error *err = NULL; 359 360 if (!filename) { 361 /* 362 * In the future, if 'snapshot-file' is not specified, the snapshot 363 * will be taken internally. Today it's actually required. 364 */ 365 error_setg(&err, QERR_MISSING_PARAMETER, "snapshot-file"); 366 goto end; 367 } 368 369 mode = reuse ? NEW_IMAGE_MODE_EXISTING : NEW_IMAGE_MODE_ABSOLUTE_PATHS; 370 qmp_blockdev_snapshot_sync(device, NULL, filename, NULL, format, 371 true, mode, &err); 372 end: 373 hmp_handle_error(mon, err); 374 } 375 376 void hmp_snapshot_blkdev_internal(Monitor *mon, const QDict *qdict) 377 { 378 const char *device = qdict_get_str(qdict, "device"); 379 const char *name = qdict_get_str(qdict, "name"); 380 Error *err = NULL; 381 382 qmp_blockdev_snapshot_internal_sync(device, name, &err); 383 hmp_handle_error(mon, err); 384 } 385 386 void hmp_snapshot_delete_blkdev_internal(Monitor *mon, const QDict *qdict) 387 { 388 const char *device = qdict_get_str(qdict, "device"); 389 const char *name = qdict_get_str(qdict, "name"); 390 const char *id = qdict_get_try_str(qdict, "id"); 391 Error *err = NULL; 392 393 qmp_blockdev_snapshot_delete_internal_sync(device, id, name, &err); 394 hmp_handle_error(mon, err); 395 } 396 397 void hmp_nbd_server_start(Monitor *mon, const QDict *qdict) 398 { 399 const char *uri = qdict_get_str(qdict, "uri"); 400 bool writable = qdict_get_try_bool(qdict, "writable", false); 401 bool all = qdict_get_try_bool(qdict, "all", false); 402 Error *local_err = NULL; 403 BlockInfoList *block_list, *info; 404 SocketAddress *addr; 405 NbdServerAddOptions export; 406 407 if (writable && !all) { 408 error_setg(&local_err, "-w only valid together with -a"); 409 goto exit; 410 } 411 412 /* First check if the address is valid and start the server. */ 413 addr = socket_parse(uri, &local_err); 414 if (local_err != NULL) { 415 goto exit; 416 } 417 418 nbd_server_start(addr, NULL, NULL, 0, &local_err); 419 qapi_free_SocketAddress(addr); 420 if (local_err != NULL) { 421 goto exit; 422 } 423 424 if (!all) { 425 return; 426 } 427 428 /* Then try adding all block devices. If one fails, close all and 429 * exit. 430 */ 431 block_list = qmp_query_block(NULL); 432 433 for (info = block_list; info; info = info->next) { 434 if (!info->value->inserted) { 435 continue; 436 } 437 438 export = (NbdServerAddOptions) { 439 .device = info->value->device, 440 .has_writable = true, 441 .writable = writable, 442 }; 443 444 qmp_nbd_server_add(&export, &local_err); 445 446 if (local_err != NULL) { 447 qmp_nbd_server_stop(NULL); 448 break; 449 } 450 } 451 452 qapi_free_BlockInfoList(block_list); 453 454 exit: 455 hmp_handle_error(mon, local_err); 456 } 457 458 void hmp_nbd_server_add(Monitor *mon, const QDict *qdict) 459 { 460 const char *device = qdict_get_str(qdict, "device"); 461 const char *name = qdict_get_try_str(qdict, "name"); 462 bool writable = qdict_get_try_bool(qdict, "writable", false); 463 Error *local_err = NULL; 464 465 NbdServerAddOptions export = { 466 .device = (char *) device, 467 .name = (char *) name, 468 .has_writable = true, 469 .writable = writable, 470 }; 471 472 qmp_nbd_server_add(&export, &local_err); 473 hmp_handle_error(mon, local_err); 474 } 475 476 void hmp_nbd_server_remove(Monitor *mon, const QDict *qdict) 477 { 478 const char *name = qdict_get_str(qdict, "name"); 479 bool force = qdict_get_try_bool(qdict, "force", false); 480 Error *err = NULL; 481 482 /* Rely on BLOCK_EXPORT_REMOVE_MODE_SAFE being the default */ 483 qmp_nbd_server_remove(name, force, BLOCK_EXPORT_REMOVE_MODE_HARD, &err); 484 hmp_handle_error(mon, err); 485 } 486 487 void hmp_nbd_server_stop(Monitor *mon, const QDict *qdict) 488 { 489 Error *err = NULL; 490 491 qmp_nbd_server_stop(&err); 492 hmp_handle_error(mon, err); 493 } 494 495 void coroutine_fn hmp_block_resize(Monitor *mon, const QDict *qdict) 496 { 497 const char *device = qdict_get_str(qdict, "device"); 498 int64_t size = qdict_get_int(qdict, "size"); 499 Error *err = NULL; 500 501 qmp_block_resize(device, NULL, size, &err); 502 hmp_handle_error(mon, err); 503 } 504 505 void hmp_block_stream(Monitor *mon, const QDict *qdict) 506 { 507 Error *error = NULL; 508 const char *device = qdict_get_str(qdict, "device"); 509 const char *base = qdict_get_try_str(qdict, "base"); 510 int64_t speed = qdict_get_try_int(qdict, "speed", 0); 511 512 qmp_block_stream(device, device, base, NULL, NULL, NULL, 513 qdict_haskey(qdict, "speed"), speed, 514 true, BLOCKDEV_ON_ERROR_REPORT, NULL, 515 false, false, false, false, &error); 516 517 hmp_handle_error(mon, error); 518 } 519 520 void hmp_block_set_io_throttle(Monitor *mon, const QDict *qdict) 521 { 522 Error *err = NULL; 523 char *device = (char *) qdict_get_str(qdict, "device"); 524 BlockIOThrottle throttle = { 525 .bps = qdict_get_int(qdict, "bps"), 526 .bps_rd = qdict_get_int(qdict, "bps_rd"), 527 .bps_wr = qdict_get_int(qdict, "bps_wr"), 528 .iops = qdict_get_int(qdict, "iops"), 529 .iops_rd = qdict_get_int(qdict, "iops_rd"), 530 .iops_wr = qdict_get_int(qdict, "iops_wr"), 531 }; 532 533 /* 534 * qmp_block_set_io_throttle has separate parameters for the 535 * (deprecated) block device name and the qdev ID but the HMP 536 * version has only one, so we must decide which one to pass. 537 */ 538 if (blk_by_name(device)) { 539 throttle.device = device; 540 } else { 541 throttle.id = device; 542 } 543 544 qmp_block_set_io_throttle(&throttle, &err); 545 hmp_handle_error(mon, err); 546 } 547 548 void hmp_eject(Monitor *mon, const QDict *qdict) 549 { 550 bool force = qdict_get_try_bool(qdict, "force", false); 551 const char *device = qdict_get_str(qdict, "device"); 552 Error *err = NULL; 553 554 qmp_eject(device, NULL, true, force, &err); 555 hmp_handle_error(mon, err); 556 } 557 558 void hmp_qemu_io(Monitor *mon, const QDict *qdict) 559 { 560 BlockBackend *blk = NULL; 561 BlockDriverState *bs = NULL; 562 BlockBackend *local_blk = NULL; 563 AioContext *ctx = NULL; 564 bool qdev = qdict_get_try_bool(qdict, "qdev", false); 565 const char *device = qdict_get_str(qdict, "device"); 566 const char *command = qdict_get_str(qdict, "command"); 567 Error *err = NULL; 568 int ret; 569 570 if (qdev) { 571 blk = blk_by_qdev_id(device, &err); 572 if (!blk) { 573 goto fail; 574 } 575 } else { 576 blk = blk_by_name(device); 577 if (!blk) { 578 bs = bdrv_lookup_bs(NULL, device, &err); 579 if (!bs) { 580 goto fail; 581 } 582 } 583 } 584 585 ctx = blk ? blk_get_aio_context(blk) : bdrv_get_aio_context(bs); 586 aio_context_acquire(ctx); 587 588 if (bs) { 589 blk = local_blk = blk_new(bdrv_get_aio_context(bs), 0, BLK_PERM_ALL); 590 ret = blk_insert_bs(blk, bs, &err); 591 if (ret < 0) { 592 goto fail; 593 } 594 } 595 596 /* 597 * Notably absent: Proper permission management. This is sad, but it seems 598 * almost impossible to achieve without changing the semantics and thereby 599 * limiting the use cases of the qemu-io HMP command. 600 * 601 * In an ideal world we would unconditionally create a new BlockBackend for 602 * qemuio_command(), but we have commands like 'reopen' and want them to 603 * take effect on the exact BlockBackend whose name the user passed instead 604 * of just on a temporary copy of it. 605 * 606 * Another problem is that deleting the temporary BlockBackend involves 607 * draining all requests on it first, but some qemu-iotests cases want to 608 * issue multiple aio_read/write requests and expect them to complete in 609 * the background while the monitor has already returned. 610 * 611 * This is also what prevents us from saving the original permissions and 612 * restoring them later: We can't revoke permissions until all requests 613 * have completed, and we don't know when that is nor can we really let 614 * anything else run before we have revoken them to avoid race conditions. 615 * 616 * What happens now is that command() in qemu-io-cmds.c can extend the 617 * permissions if necessary for the qemu-io command. And they simply stay 618 * extended, possibly resulting in a read-only guest device keeping write 619 * permissions. Ugly, but it appears to be the lesser evil. 620 */ 621 qemuio_command(blk, command); 622 623 fail: 624 blk_unref(local_blk); 625 626 if (ctx) { 627 aio_context_release(ctx); 628 } 629 630 hmp_handle_error(mon, err); 631 } 632 633 static void print_block_info(Monitor *mon, BlockInfo *info, 634 BlockDeviceInfo *inserted, bool verbose) 635 { 636 ImageInfo *image_info; 637 638 assert(!info || !info->inserted || info->inserted == inserted); 639 640 if (info && *info->device) { 641 monitor_puts(mon, info->device); 642 if (inserted && inserted->node_name) { 643 monitor_printf(mon, " (%s)", inserted->node_name); 644 } 645 } else { 646 assert(info || inserted); 647 monitor_puts(mon, 648 inserted && inserted->node_name ? inserted->node_name 649 : info && info->qdev ? info->qdev 650 : "<anonymous>"); 651 } 652 653 if (inserted) { 654 monitor_printf(mon, ": %s (%s%s%s)\n", 655 inserted->file, 656 inserted->drv, 657 inserted->ro ? ", read-only" : "", 658 inserted->encrypted ? ", encrypted" : ""); 659 } else { 660 monitor_printf(mon, ": [not inserted]\n"); 661 } 662 663 if (info) { 664 if (info->qdev) { 665 monitor_printf(mon, " Attached to: %s\n", info->qdev); 666 } 667 if (info->has_io_status && info->io_status != BLOCK_DEVICE_IO_STATUS_OK) { 668 monitor_printf(mon, " I/O status: %s\n", 669 BlockDeviceIoStatus_str(info->io_status)); 670 } 671 672 if (info->removable) { 673 monitor_printf(mon, " Removable device: %slocked, tray %s\n", 674 info->locked ? "" : "not ", 675 info->tray_open ? "open" : "closed"); 676 } 677 } 678 679 680 if (!inserted) { 681 return; 682 } 683 684 monitor_printf(mon, " Cache mode: %s%s%s\n", 685 inserted->cache->writeback ? "writeback" : "writethrough", 686 inserted->cache->direct ? ", direct" : "", 687 inserted->cache->no_flush ? ", ignore flushes" : ""); 688 689 if (inserted->backing_file) { 690 monitor_printf(mon, 691 " Backing file: %s " 692 "(chain depth: %" PRId64 ")\n", 693 inserted->backing_file, 694 inserted->backing_file_depth); 695 } 696 697 if (inserted->detect_zeroes != BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF) { 698 monitor_printf(mon, " Detect zeroes: %s\n", 699 BlockdevDetectZeroesOptions_str(inserted->detect_zeroes)); 700 } 701 702 if (inserted->bps || inserted->bps_rd || inserted->bps_wr || 703 inserted->iops || inserted->iops_rd || inserted->iops_wr) 704 { 705 monitor_printf(mon, " I/O throttling: bps=%" PRId64 706 " bps_rd=%" PRId64 " bps_wr=%" PRId64 707 " bps_max=%" PRId64 708 " bps_rd_max=%" PRId64 709 " bps_wr_max=%" PRId64 710 " iops=%" PRId64 " iops_rd=%" PRId64 711 " iops_wr=%" PRId64 712 " iops_max=%" PRId64 713 " iops_rd_max=%" PRId64 714 " iops_wr_max=%" PRId64 715 " iops_size=%" PRId64 716 " group=%s\n", 717 inserted->bps, 718 inserted->bps_rd, 719 inserted->bps_wr, 720 inserted->bps_max, 721 inserted->bps_rd_max, 722 inserted->bps_wr_max, 723 inserted->iops, 724 inserted->iops_rd, 725 inserted->iops_wr, 726 inserted->iops_max, 727 inserted->iops_rd_max, 728 inserted->iops_wr_max, 729 inserted->iops_size, 730 inserted->group); 731 } 732 733 if (verbose) { 734 monitor_printf(mon, "\nImages:\n"); 735 image_info = inserted->image; 736 while (1) { 737 bdrv_node_info_dump(qapi_ImageInfo_base(image_info), 0, false); 738 if (image_info->backing_image) { 739 image_info = image_info->backing_image; 740 } else { 741 break; 742 } 743 } 744 } 745 } 746 747 void hmp_info_block(Monitor *mon, const QDict *qdict) 748 { 749 BlockInfoList *block_list, *info; 750 BlockDeviceInfoList *blockdev_list, *blockdev; 751 const char *device = qdict_get_try_str(qdict, "device"); 752 bool verbose = qdict_get_try_bool(qdict, "verbose", false); 753 bool nodes = qdict_get_try_bool(qdict, "nodes", false); 754 bool printed = false; 755 756 /* Print BlockBackend information */ 757 if (!nodes) { 758 block_list = qmp_query_block(NULL); 759 } else { 760 block_list = NULL; 761 } 762 763 for (info = block_list; info; info = info->next) { 764 if (device && strcmp(device, info->value->device)) { 765 continue; 766 } 767 768 if (info != block_list) { 769 monitor_printf(mon, "\n"); 770 } 771 772 print_block_info(mon, info->value, info->value->inserted, 773 verbose); 774 printed = true; 775 } 776 777 qapi_free_BlockInfoList(block_list); 778 779 if ((!device && !nodes) || printed) { 780 return; 781 } 782 783 /* Print node information */ 784 blockdev_list = qmp_query_named_block_nodes(false, false, NULL); 785 for (blockdev = blockdev_list; blockdev; blockdev = blockdev->next) { 786 assert(blockdev->value->node_name); 787 if (device && strcmp(device, blockdev->value->node_name)) { 788 continue; 789 } 790 791 if (blockdev != blockdev_list) { 792 monitor_printf(mon, "\n"); 793 } 794 795 print_block_info(mon, NULL, blockdev->value, verbose); 796 } 797 qapi_free_BlockDeviceInfoList(blockdev_list); 798 } 799 800 void hmp_info_blockstats(Monitor *mon, const QDict *qdict) 801 { 802 BlockStatsList *stats_list, *stats; 803 804 stats_list = qmp_query_blockstats(false, false, NULL); 805 806 for (stats = stats_list; stats; stats = stats->next) { 807 if (!stats->value->device) { 808 continue; 809 } 810 811 monitor_printf(mon, "%s:", stats->value->device); 812 monitor_printf(mon, " rd_bytes=%" PRId64 813 " wr_bytes=%" PRId64 814 " rd_operations=%" PRId64 815 " wr_operations=%" PRId64 816 " flush_operations=%" PRId64 817 " wr_total_time_ns=%" PRId64 818 " rd_total_time_ns=%" PRId64 819 " flush_total_time_ns=%" PRId64 820 " rd_merged=%" PRId64 821 " wr_merged=%" PRId64 822 " idle_time_ns=%" PRId64 823 "\n", 824 stats->value->stats->rd_bytes, 825 stats->value->stats->wr_bytes, 826 stats->value->stats->rd_operations, 827 stats->value->stats->wr_operations, 828 stats->value->stats->flush_operations, 829 stats->value->stats->wr_total_time_ns, 830 stats->value->stats->rd_total_time_ns, 831 stats->value->stats->flush_total_time_ns, 832 stats->value->stats->rd_merged, 833 stats->value->stats->wr_merged, 834 stats->value->stats->idle_time_ns); 835 } 836 837 qapi_free_BlockStatsList(stats_list); 838 } 839 840 void hmp_info_block_jobs(Monitor *mon, const QDict *qdict) 841 { 842 BlockJobInfoList *list; 843 844 list = qmp_query_block_jobs(&error_abort); 845 846 if (!list) { 847 monitor_printf(mon, "No active jobs\n"); 848 return; 849 } 850 851 while (list) { 852 if (list->value->type == JOB_TYPE_STREAM) { 853 monitor_printf(mon, "Streaming device %s: Completed %" PRId64 854 " of %" PRId64 " bytes, speed limit %" PRId64 855 " bytes/s\n", 856 list->value->device, 857 list->value->offset, 858 list->value->len, 859 list->value->speed); 860 } else { 861 monitor_printf(mon, "Type %s, device %s: Completed %" PRId64 862 " of %" PRId64 " bytes, speed limit %" PRId64 863 " bytes/s\n", 864 JobType_str(list->value->type), 865 list->value->device, 866 list->value->offset, 867 list->value->len, 868 list->value->speed); 869 } 870 list = list->next; 871 } 872 873 qapi_free_BlockJobInfoList(list); 874 } 875 876 void hmp_info_snapshots(Monitor *mon, const QDict *qdict) 877 { 878 BlockDriverState *bs, *bs1; 879 BdrvNextIterator it1; 880 QEMUSnapshotInfo *sn_tab, *sn; 881 bool no_snapshot = true; 882 int nb_sns, i; 883 int total; 884 int *global_snapshots; 885 AioContext *aio_context; 886 887 typedef struct SnapshotEntry { 888 QEMUSnapshotInfo sn; 889 QTAILQ_ENTRY(SnapshotEntry) next; 890 } SnapshotEntry; 891 892 typedef struct ImageEntry { 893 const char *imagename; 894 QTAILQ_ENTRY(ImageEntry) next; 895 QTAILQ_HEAD(, SnapshotEntry) snapshots; 896 } ImageEntry; 897 898 QTAILQ_HEAD(, ImageEntry) image_list = 899 QTAILQ_HEAD_INITIALIZER(image_list); 900 901 ImageEntry *image_entry, *next_ie; 902 SnapshotEntry *snapshot_entry; 903 Error *err = NULL; 904 905 GRAPH_RDLOCK_GUARD_MAINLOOP(); 906 907 bs = bdrv_all_find_vmstate_bs(NULL, false, NULL, &err); 908 if (!bs) { 909 error_report_err(err); 910 return; 911 } 912 aio_context = bdrv_get_aio_context(bs); 913 914 aio_context_acquire(aio_context); 915 nb_sns = bdrv_snapshot_list(bs, &sn_tab); 916 aio_context_release(aio_context); 917 918 if (nb_sns < 0) { 919 monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); 920 return; 921 } 922 923 for (bs1 = bdrv_first(&it1); bs1; bs1 = bdrv_next(&it1)) { 924 int bs1_nb_sns = 0; 925 ImageEntry *ie; 926 SnapshotEntry *se; 927 AioContext *ctx = bdrv_get_aio_context(bs1); 928 929 aio_context_acquire(ctx); 930 if (bdrv_can_snapshot(bs1)) { 931 sn = NULL; 932 bs1_nb_sns = bdrv_snapshot_list(bs1, &sn); 933 if (bs1_nb_sns > 0) { 934 no_snapshot = false; 935 ie = g_new0(ImageEntry, 1); 936 ie->imagename = bdrv_get_device_name(bs1); 937 QTAILQ_INIT(&ie->snapshots); 938 QTAILQ_INSERT_TAIL(&image_list, ie, next); 939 for (i = 0; i < bs1_nb_sns; i++) { 940 se = g_new0(SnapshotEntry, 1); 941 se->sn = sn[i]; 942 QTAILQ_INSERT_TAIL(&ie->snapshots, se, next); 943 } 944 } 945 g_free(sn); 946 } 947 aio_context_release(ctx); 948 } 949 950 if (no_snapshot) { 951 monitor_printf(mon, "There is no snapshot available.\n"); 952 return; 953 } 954 955 global_snapshots = g_new0(int, nb_sns); 956 total = 0; 957 for (i = 0; i < nb_sns; i++) { 958 SnapshotEntry *next_sn; 959 if (bdrv_all_has_snapshot(sn_tab[i].name, false, NULL, NULL) == 1) { 960 global_snapshots[total] = i; 961 total++; 962 QTAILQ_FOREACH(image_entry, &image_list, next) { 963 QTAILQ_FOREACH_SAFE(snapshot_entry, &image_entry->snapshots, 964 next, next_sn) { 965 if (!strcmp(sn_tab[i].name, snapshot_entry->sn.name)) { 966 QTAILQ_REMOVE(&image_entry->snapshots, snapshot_entry, 967 next); 968 g_free(snapshot_entry); 969 } 970 } 971 } 972 } 973 } 974 monitor_printf(mon, "List of snapshots present on all disks:\n"); 975 976 if (total > 0) { 977 bdrv_snapshot_dump(NULL); 978 monitor_printf(mon, "\n"); 979 for (i = 0; i < total; i++) { 980 sn = &sn_tab[global_snapshots[i]]; 981 /* 982 * The ID is not guaranteed to be the same on all images, so 983 * overwrite it. 984 */ 985 pstrcpy(sn->id_str, sizeof(sn->id_str), "--"); 986 bdrv_snapshot_dump(sn); 987 monitor_printf(mon, "\n"); 988 } 989 } else { 990 monitor_printf(mon, "None\n"); 991 } 992 993 QTAILQ_FOREACH(image_entry, &image_list, next) { 994 if (QTAILQ_EMPTY(&image_entry->snapshots)) { 995 continue; 996 } 997 monitor_printf(mon, 998 "\nList of partial (non-loadable) snapshots on '%s':\n", 999 image_entry->imagename); 1000 bdrv_snapshot_dump(NULL); 1001 monitor_printf(mon, "\n"); 1002 QTAILQ_FOREACH(snapshot_entry, &image_entry->snapshots, next) { 1003 bdrv_snapshot_dump(&snapshot_entry->sn); 1004 monitor_printf(mon, "\n"); 1005 } 1006 } 1007 1008 QTAILQ_FOREACH_SAFE(image_entry, &image_list, next, next_ie) { 1009 SnapshotEntry *next_sn; 1010 QTAILQ_FOREACH_SAFE(snapshot_entry, &image_entry->snapshots, next, 1011 next_sn) { 1012 g_free(snapshot_entry); 1013 } 1014 g_free(image_entry); 1015 } 1016 g_free(sn_tab); 1017 g_free(global_snapshots); 1018 } 1019 1020 void hmp_change_medium(Monitor *mon, const char *device, const char *target, 1021 const char *arg, const char *read_only, bool force, 1022 Error **errp) 1023 { 1024 ERRP_GUARD(); 1025 BlockdevChangeReadOnlyMode read_only_mode = 0; 1026 1027 if (read_only) { 1028 read_only_mode = 1029 qapi_enum_parse(&BlockdevChangeReadOnlyMode_lookup, 1030 read_only, 1031 BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN, errp); 1032 if (*errp) { 1033 return; 1034 } 1035 } 1036 1037 qmp_blockdev_change_medium(device, NULL, target, arg, true, force, 1038 !!read_only, read_only_mode, errp); 1039 } 1040