block-hmp-cmds.c (31656B)
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 60static 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); 86out: 87 qemu_opts_del(opts); 88} 89 90void 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 130err: 131 if (dinfo) { 132 BlockBackend *blk = blk_by_legacy_dinfo(dinfo); 133 monitor_remove_blk(blk); 134 blk_unref(blk); 135 } 136} 137 138void 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 199void 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 234void 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 goto end; 255 } 256 qmp_drive_mirror(&mirror, &err); 257end: 258 hmp_handle_error(mon, err); 259} 260 261void 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 goto end; 285 } 286 287 qmp_drive_backup(&backup, &err); 288end: 289 hmp_handle_error(mon, err); 290} 291 292void 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 303void 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 314void 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 324void 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 334void 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 344void 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 goto end; 360 } 361 362 mode = reuse ? NEW_IMAGE_MODE_EXISTING : NEW_IMAGE_MODE_ABSOLUTE_PATHS; 363 qmp_blockdev_snapshot_sync(true, device, false, NULL, 364 filename, false, NULL, 365 !!format, format, 366 true, mode, &err); 367end: 368 hmp_handle_error(mon, err); 369} 370 371void 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 381void 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 393void 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 450exit: 451 hmp_handle_error(mon, local_err); 452} 453 454void 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 473void 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 484void 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 492void 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 502void 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 518void 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 548void 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 558void 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 623fail: 624 blk_unref(local_blk); 625 626 if (ctx) { 627 aio_context_release(ctx); 628 } 629 630 hmp_handle_error(mon, err); 631} 632 633static void print_block_info(Monitor *mon, BlockInfo *info, 634 BlockDeviceInfo *inserted, bool verbose) 635{ 636 ImageInfo *image_info; 637 638 assert(!info || !info->has_inserted || info->inserted == inserted); 639 640 if (info && *info->device) { 641 monitor_printf(mon, "%s", info->device); 642 if (inserted && inserted->has_node_name) { 643 monitor_printf(mon, " (%s)", inserted->node_name); 644 } 645 } else { 646 assert(info || inserted); 647 monitor_printf(mon, "%s", 648 inserted && inserted->has_node_name ? inserted->node_name 649 : info && info->has_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->has_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->has_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_image_info_dump(image_info); 738 if (image_info->has_backing_image) { 739 image_info = image_info->backing_image; 740 } else { 741 break; 742 } 743 } 744 } 745} 746 747void 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->has_inserted 773 ? info->value->inserted : NULL, 774 verbose); 775 printed = true; 776 } 777 778 qapi_free_BlockInfoList(block_list); 779 780 if ((!device && !nodes) || printed) { 781 return; 782 } 783 784 /* Print node information */ 785 blockdev_list = qmp_query_named_block_nodes(false, false, NULL); 786 for (blockdev = blockdev_list; blockdev; blockdev = blockdev->next) { 787 assert(blockdev->value->has_node_name); 788 if (device && strcmp(device, blockdev->value->node_name)) { 789 continue; 790 } 791 792 if (blockdev != blockdev_list) { 793 monitor_printf(mon, "\n"); 794 } 795 796 print_block_info(mon, NULL, blockdev->value, verbose); 797 } 798 qapi_free_BlockDeviceInfoList(blockdev_list); 799} 800 801void hmp_info_blockstats(Monitor *mon, const QDict *qdict) 802{ 803 BlockStatsList *stats_list, *stats; 804 805 stats_list = qmp_query_blockstats(false, false, NULL); 806 807 for (stats = stats_list; stats; stats = stats->next) { 808 if (!stats->value->has_device) { 809 continue; 810 } 811 812 monitor_printf(mon, "%s:", stats->value->device); 813 monitor_printf(mon, " rd_bytes=%" PRId64 814 " wr_bytes=%" PRId64 815 " rd_operations=%" PRId64 816 " wr_operations=%" PRId64 817 " flush_operations=%" PRId64 818 " wr_total_time_ns=%" PRId64 819 " rd_total_time_ns=%" PRId64 820 " flush_total_time_ns=%" PRId64 821 " rd_merged=%" PRId64 822 " wr_merged=%" PRId64 823 " idle_time_ns=%" PRId64 824 "\n", 825 stats->value->stats->rd_bytes, 826 stats->value->stats->wr_bytes, 827 stats->value->stats->rd_operations, 828 stats->value->stats->wr_operations, 829 stats->value->stats->flush_operations, 830 stats->value->stats->wr_total_time_ns, 831 stats->value->stats->rd_total_time_ns, 832 stats->value->stats->flush_total_time_ns, 833 stats->value->stats->rd_merged, 834 stats->value->stats->wr_merged, 835 stats->value->stats->idle_time_ns); 836 } 837 838 qapi_free_BlockStatsList(stats_list); 839} 840 841void hmp_info_block_jobs(Monitor *mon, const QDict *qdict) 842{ 843 BlockJobInfoList *list; 844 845 list = qmp_query_block_jobs(&error_abort); 846 847 if (!list) { 848 monitor_printf(mon, "No active jobs\n"); 849 return; 850 } 851 852 while (list) { 853 if (strcmp(list->value->type, "stream") == 0) { 854 monitor_printf(mon, "Streaming device %s: Completed %" PRId64 855 " of %" PRId64 " bytes, speed limit %" PRId64 856 " bytes/s\n", 857 list->value->device, 858 list->value->offset, 859 list->value->len, 860 list->value->speed); 861 } else { 862 monitor_printf(mon, "Type %s, device %s: Completed %" PRId64 863 " of %" PRId64 " bytes, speed limit %" PRId64 864 " bytes/s\n", 865 list->value->type, 866 list->value->device, 867 list->value->offset, 868 list->value->len, 869 list->value->speed); 870 } 871 list = list->next; 872 } 873 874 qapi_free_BlockJobInfoList(list); 875} 876 877void hmp_info_snapshots(Monitor *mon, const QDict *qdict) 878{ 879 BlockDriverState *bs, *bs1; 880 BdrvNextIterator it1; 881 QEMUSnapshotInfo *sn_tab, *sn; 882 bool no_snapshot = true; 883 int nb_sns, i; 884 int total; 885 int *global_snapshots; 886 AioContext *aio_context; 887 888 typedef struct SnapshotEntry { 889 QEMUSnapshotInfo sn; 890 QTAILQ_ENTRY(SnapshotEntry) next; 891 } SnapshotEntry; 892 893 typedef struct ImageEntry { 894 const char *imagename; 895 QTAILQ_ENTRY(ImageEntry) next; 896 QTAILQ_HEAD(, SnapshotEntry) snapshots; 897 } ImageEntry; 898 899 QTAILQ_HEAD(, ImageEntry) image_list = 900 QTAILQ_HEAD_INITIALIZER(image_list); 901 902 ImageEntry *image_entry, *next_ie; 903 SnapshotEntry *snapshot_entry; 904 Error *err = NULL; 905 906 bs = bdrv_all_find_vmstate_bs(NULL, false, NULL, &err); 907 if (!bs) { 908 error_report_err(err); 909 return; 910 } 911 aio_context = bdrv_get_aio_context(bs); 912 913 aio_context_acquire(aio_context); 914 nb_sns = bdrv_snapshot_list(bs, &sn_tab); 915 aio_context_release(aio_context); 916 917 if (nb_sns < 0) { 918 monitor_printf(mon, "bdrv_snapshot_list: error %d\n", nb_sns); 919 return; 920 } 921 922 for (bs1 = bdrv_first(&it1); bs1; bs1 = bdrv_next(&it1)) { 923 int bs1_nb_sns = 0; 924 ImageEntry *ie; 925 SnapshotEntry *se; 926 AioContext *ctx = bdrv_get_aio_context(bs1); 927 928 aio_context_acquire(ctx); 929 if (bdrv_can_snapshot(bs1)) { 930 sn = NULL; 931 bs1_nb_sns = bdrv_snapshot_list(bs1, &sn); 932 if (bs1_nb_sns > 0) { 933 no_snapshot = false; 934 ie = g_new0(ImageEntry, 1); 935 ie->imagename = bdrv_get_device_name(bs1); 936 QTAILQ_INIT(&ie->snapshots); 937 QTAILQ_INSERT_TAIL(&image_list, ie, next); 938 for (i = 0; i < bs1_nb_sns; i++) { 939 se = g_new0(SnapshotEntry, 1); 940 se->sn = sn[i]; 941 QTAILQ_INSERT_TAIL(&ie->snapshots, se, next); 942 } 943 } 944 g_free(sn); 945 } 946 aio_context_release(ctx); 947 } 948 949 if (no_snapshot) { 950 monitor_printf(mon, "There is no snapshot available.\n"); 951 return; 952 } 953 954 global_snapshots = g_new0(int, nb_sns); 955 total = 0; 956 for (i = 0; i < nb_sns; i++) { 957 SnapshotEntry *next_sn; 958 if (bdrv_all_has_snapshot(sn_tab[i].name, false, NULL, NULL) == 1) { 959 global_snapshots[total] = i; 960 total++; 961 QTAILQ_FOREACH(image_entry, &image_list, next) { 962 QTAILQ_FOREACH_SAFE(snapshot_entry, &image_entry->snapshots, 963 next, next_sn) { 964 if (!strcmp(sn_tab[i].name, snapshot_entry->sn.name)) { 965 QTAILQ_REMOVE(&image_entry->snapshots, snapshot_entry, 966 next); 967 g_free(snapshot_entry); 968 } 969 } 970 } 971 } 972 } 973 monitor_printf(mon, "List of snapshots present on all disks:\n"); 974 975 if (total > 0) { 976 bdrv_snapshot_dump(NULL); 977 monitor_printf(mon, "\n"); 978 for (i = 0; i < total; i++) { 979 sn = &sn_tab[global_snapshots[i]]; 980 /* 981 * The ID is not guaranteed to be the same on all images, so 982 * overwrite it. 983 */ 984 pstrcpy(sn->id_str, sizeof(sn->id_str), "--"); 985 bdrv_snapshot_dump(sn); 986 monitor_printf(mon, "\n"); 987 } 988 } else { 989 monitor_printf(mon, "None\n"); 990 } 991 992 QTAILQ_FOREACH(image_entry, &image_list, next) { 993 if (QTAILQ_EMPTY(&image_entry->snapshots)) { 994 continue; 995 } 996 monitor_printf(mon, 997 "\nList of partial (non-loadable) snapshots on '%s':\n", 998 image_entry->imagename); 999 bdrv_snapshot_dump(NULL); 1000 monitor_printf(mon, "\n"); 1001 QTAILQ_FOREACH(snapshot_entry, &image_entry->snapshots, next) { 1002 bdrv_snapshot_dump(&snapshot_entry->sn); 1003 monitor_printf(mon, "\n"); 1004 } 1005 } 1006 1007 QTAILQ_FOREACH_SAFE(image_entry, &image_list, next, next_ie) { 1008 SnapshotEntry *next_sn; 1009 QTAILQ_FOREACH_SAFE(snapshot_entry, &image_entry->snapshots, next, 1010 next_sn) { 1011 g_free(snapshot_entry); 1012 } 1013 g_free(image_entry); 1014 } 1015 g_free(sn_tab); 1016 g_free(global_snapshots); 1017}