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