1 /* 2 * Block layer qmp and info dump related functions 3 * 4 * Copyright (c) 2003-2008 Fabrice Bellard 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 */ 24 25 #include "qemu/osdep.h" 26 #include "qemu/cutils.h" 27 #include "block/qapi.h" 28 #include "block/block_int.h" 29 #include "block/throttle-groups.h" 30 #include "block/write-threshold.h" 31 #include "qapi/error.h" 32 #include "qapi/qapi-commands-block-core.h" 33 #include "qapi/qobject-output-visitor.h" 34 #include "qapi/qapi-visit-block-core.h" 35 #include "qapi/qmp/qbool.h" 36 #include "qapi/qmp/qdict.h" 37 #include "qapi/qmp/qlist.h" 38 #include "qapi/qmp/qnum.h" 39 #include "qapi/qmp/qstring.h" 40 #include "qemu/qemu-print.h" 41 #include "sysemu/block-backend.h" 42 #include "qemu/cutils.h" 43 44 BlockDeviceInfo *bdrv_block_device_info(BlockBackend *blk, 45 BlockDriverState *bs, 46 bool flat, 47 Error **errp) 48 { 49 ImageInfo **p_image_info; 50 BlockDriverState *bs0, *backing; 51 BlockDeviceInfo *info; 52 53 if (!bs->drv) { 54 error_setg(errp, "Block device %s is ejected", bs->node_name); 55 return NULL; 56 } 57 58 bdrv_refresh_filename(bs); 59 60 info = g_malloc0(sizeof(*info)); 61 info->file = g_strdup(bs->filename); 62 info->ro = bs->read_only; 63 info->drv = g_strdup(bs->drv->format_name); 64 info->encrypted = bs->encrypted; 65 info->encryption_key_missing = false; 66 67 info->cache = g_new(BlockdevCacheInfo, 1); 68 *info->cache = (BlockdevCacheInfo) { 69 .writeback = blk ? blk_enable_write_cache(blk) : true, 70 .direct = !!(bs->open_flags & BDRV_O_NOCACHE), 71 .no_flush = !!(bs->open_flags & BDRV_O_NO_FLUSH), 72 }; 73 74 if (bs->node_name[0]) { 75 info->has_node_name = true; 76 info->node_name = g_strdup(bs->node_name); 77 } 78 79 backing = bdrv_cow_bs(bs); 80 if (backing) { 81 info->has_backing_file = true; 82 info->backing_file = g_strdup(backing->filename); 83 } 84 85 if (!QLIST_EMPTY(&bs->dirty_bitmaps)) { 86 info->has_dirty_bitmaps = true; 87 info->dirty_bitmaps = bdrv_query_dirty_bitmaps(bs); 88 } 89 90 info->detect_zeroes = bs->detect_zeroes; 91 92 if (blk && blk_get_public(blk)->throttle_group_member.throttle_state) { 93 ThrottleConfig cfg; 94 BlockBackendPublic *blkp = blk_get_public(blk); 95 96 throttle_group_get_config(&blkp->throttle_group_member, &cfg); 97 98 info->bps = cfg.buckets[THROTTLE_BPS_TOTAL].avg; 99 info->bps_rd = cfg.buckets[THROTTLE_BPS_READ].avg; 100 info->bps_wr = cfg.buckets[THROTTLE_BPS_WRITE].avg; 101 102 info->iops = cfg.buckets[THROTTLE_OPS_TOTAL].avg; 103 info->iops_rd = cfg.buckets[THROTTLE_OPS_READ].avg; 104 info->iops_wr = cfg.buckets[THROTTLE_OPS_WRITE].avg; 105 106 info->has_bps_max = cfg.buckets[THROTTLE_BPS_TOTAL].max; 107 info->bps_max = cfg.buckets[THROTTLE_BPS_TOTAL].max; 108 info->has_bps_rd_max = cfg.buckets[THROTTLE_BPS_READ].max; 109 info->bps_rd_max = cfg.buckets[THROTTLE_BPS_READ].max; 110 info->has_bps_wr_max = cfg.buckets[THROTTLE_BPS_WRITE].max; 111 info->bps_wr_max = cfg.buckets[THROTTLE_BPS_WRITE].max; 112 113 info->has_iops_max = cfg.buckets[THROTTLE_OPS_TOTAL].max; 114 info->iops_max = cfg.buckets[THROTTLE_OPS_TOTAL].max; 115 info->has_iops_rd_max = cfg.buckets[THROTTLE_OPS_READ].max; 116 info->iops_rd_max = cfg.buckets[THROTTLE_OPS_READ].max; 117 info->has_iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max; 118 info->iops_wr_max = cfg.buckets[THROTTLE_OPS_WRITE].max; 119 120 info->has_bps_max_length = info->has_bps_max; 121 info->bps_max_length = 122 cfg.buckets[THROTTLE_BPS_TOTAL].burst_length; 123 info->has_bps_rd_max_length = info->has_bps_rd_max; 124 info->bps_rd_max_length = 125 cfg.buckets[THROTTLE_BPS_READ].burst_length; 126 info->has_bps_wr_max_length = info->has_bps_wr_max; 127 info->bps_wr_max_length = 128 cfg.buckets[THROTTLE_BPS_WRITE].burst_length; 129 130 info->has_iops_max_length = info->has_iops_max; 131 info->iops_max_length = 132 cfg.buckets[THROTTLE_OPS_TOTAL].burst_length; 133 info->has_iops_rd_max_length = info->has_iops_rd_max; 134 info->iops_rd_max_length = 135 cfg.buckets[THROTTLE_OPS_READ].burst_length; 136 info->has_iops_wr_max_length = info->has_iops_wr_max; 137 info->iops_wr_max_length = 138 cfg.buckets[THROTTLE_OPS_WRITE].burst_length; 139 140 info->has_iops_size = cfg.op_size; 141 info->iops_size = cfg.op_size; 142 143 info->has_group = true; 144 info->group = 145 g_strdup(throttle_group_get_name(&blkp->throttle_group_member)); 146 } 147 148 info->write_threshold = bdrv_write_threshold_get(bs); 149 150 bs0 = bs; 151 p_image_info = &info->image; 152 info->backing_file_depth = 0; 153 while (1) { 154 Error *local_err = NULL; 155 bdrv_query_image_info(bs0, p_image_info, &local_err); 156 if (local_err) { 157 error_propagate(errp, local_err); 158 qapi_free_BlockDeviceInfo(info); 159 return NULL; 160 } 161 162 /* stop gathering data for flat output */ 163 if (flat) { 164 break; 165 } 166 167 if (bs0->drv && bdrv_filter_or_cow_child(bs0)) { 168 /* 169 * Put any filtered child here (for backwards compatibility to when 170 * we put bs0->backing here, which might be any filtered child). 171 */ 172 info->backing_file_depth++; 173 bs0 = bdrv_filter_or_cow_bs(bs0); 174 (*p_image_info)->has_backing_image = true; 175 p_image_info = &((*p_image_info)->backing_image); 176 } else { 177 break; 178 } 179 180 /* Skip automatically inserted nodes that the user isn't aware of for 181 * query-block (blk != NULL), but not for query-named-block-nodes */ 182 if (blk) { 183 bs0 = bdrv_skip_implicit_filters(bs0); 184 } 185 } 186 187 return info; 188 } 189 190 /* 191 * Returns 0 on success, with *p_list either set to describe snapshot 192 * information, or NULL because there are no snapshots. Returns -errno on 193 * error, with *p_list untouched. 194 */ 195 int bdrv_query_snapshot_info_list(BlockDriverState *bs, 196 SnapshotInfoList **p_list, 197 Error **errp) 198 { 199 int i, sn_count; 200 QEMUSnapshotInfo *sn_tab = NULL; 201 SnapshotInfoList *info_list, *cur_item = NULL, *head = NULL; 202 SnapshotInfo *info; 203 204 sn_count = bdrv_snapshot_list(bs, &sn_tab); 205 if (sn_count < 0) { 206 const char *dev = bdrv_get_device_name(bs); 207 switch (sn_count) { 208 case -ENOMEDIUM: 209 error_setg(errp, "Device '%s' is not inserted", dev); 210 break; 211 case -ENOTSUP: 212 error_setg(errp, 213 "Device '%s' does not support internal snapshots", 214 dev); 215 break; 216 default: 217 error_setg_errno(errp, -sn_count, 218 "Can't list snapshots of device '%s'", dev); 219 break; 220 } 221 return sn_count; 222 } 223 224 for (i = 0; i < sn_count; i++) { 225 info = g_new0(SnapshotInfo, 1); 226 info->id = g_strdup(sn_tab[i].id_str); 227 info->name = g_strdup(sn_tab[i].name); 228 info->vm_state_size = sn_tab[i].vm_state_size; 229 info->date_sec = sn_tab[i].date_sec; 230 info->date_nsec = sn_tab[i].date_nsec; 231 info->vm_clock_sec = sn_tab[i].vm_clock_nsec / 1000000000; 232 info->vm_clock_nsec = sn_tab[i].vm_clock_nsec % 1000000000; 233 info->icount = sn_tab[i].icount; 234 info->has_icount = sn_tab[i].icount != -1ULL; 235 236 info_list = g_new0(SnapshotInfoList, 1); 237 info_list->value = info; 238 239 /* XXX: waiting for the qapi to support qemu-queue.h types */ 240 if (!cur_item) { 241 head = cur_item = info_list; 242 } else { 243 cur_item->next = info_list; 244 cur_item = info_list; 245 } 246 247 } 248 249 g_free(sn_tab); 250 *p_list = head; 251 return 0; 252 } 253 254 /** 255 * bdrv_query_image_info: 256 * @bs: block device to examine 257 * @p_info: location to store image information 258 * @errp: location to store error information 259 * 260 * Store "flat" image information in @p_info. 261 * 262 * "Flat" means it does *not* query backing image information, 263 * i.e. (*pinfo)->has_backing_image will be set to false and 264 * (*pinfo)->backing_image to NULL even when the image does in fact have 265 * a backing image. 266 * 267 * @p_info will be set only on success. On error, store error in @errp. 268 */ 269 void bdrv_query_image_info(BlockDriverState *bs, 270 ImageInfo **p_info, 271 Error **errp) 272 { 273 int64_t size; 274 const char *backing_filename; 275 BlockDriverInfo bdi; 276 int ret; 277 Error *err = NULL; 278 ImageInfo *info; 279 280 aio_context_acquire(bdrv_get_aio_context(bs)); 281 282 size = bdrv_getlength(bs); 283 if (size < 0) { 284 error_setg_errno(errp, -size, "Can't get image size '%s'", 285 bs->exact_filename); 286 goto out; 287 } 288 289 bdrv_refresh_filename(bs); 290 291 info = g_new0(ImageInfo, 1); 292 info->filename = g_strdup(bs->filename); 293 info->format = g_strdup(bdrv_get_format_name(bs)); 294 info->virtual_size = size; 295 info->actual_size = bdrv_get_allocated_file_size(bs); 296 info->has_actual_size = info->actual_size >= 0; 297 if (bs->encrypted) { 298 info->encrypted = true; 299 info->has_encrypted = true; 300 } 301 if (bdrv_get_info(bs, &bdi) >= 0) { 302 if (bdi.cluster_size != 0) { 303 info->cluster_size = bdi.cluster_size; 304 info->has_cluster_size = true; 305 } 306 info->dirty_flag = bdi.is_dirty; 307 info->has_dirty_flag = true; 308 } 309 info->format_specific = bdrv_get_specific_info(bs, &err); 310 if (err) { 311 error_propagate(errp, err); 312 qapi_free_ImageInfo(info); 313 goto out; 314 } 315 info->has_format_specific = info->format_specific != NULL; 316 317 backing_filename = bs->backing_file; 318 if (backing_filename[0] != '\0') { 319 char *backing_filename2; 320 321 info->backing_filename = g_strdup(backing_filename); 322 info->has_backing_filename = true; 323 backing_filename2 = bdrv_get_full_backing_filename(bs, NULL); 324 325 /* Always report the full_backing_filename if present, even if it's the 326 * same as backing_filename. That they are same is useful info. */ 327 if (backing_filename2) { 328 info->full_backing_filename = g_strdup(backing_filename2); 329 info->has_full_backing_filename = true; 330 } 331 332 if (bs->backing_format[0]) { 333 info->backing_filename_format = g_strdup(bs->backing_format); 334 info->has_backing_filename_format = true; 335 } 336 g_free(backing_filename2); 337 } 338 339 ret = bdrv_query_snapshot_info_list(bs, &info->snapshots, &err); 340 switch (ret) { 341 case 0: 342 if (info->snapshots) { 343 info->has_snapshots = true; 344 } 345 break; 346 /* recoverable error */ 347 case -ENOMEDIUM: 348 case -ENOTSUP: 349 error_free(err); 350 break; 351 default: 352 error_propagate(errp, err); 353 qapi_free_ImageInfo(info); 354 goto out; 355 } 356 357 *p_info = info; 358 359 out: 360 aio_context_release(bdrv_get_aio_context(bs)); 361 } 362 363 /* @p_info will be set only on success. */ 364 static void bdrv_query_info(BlockBackend *blk, BlockInfo **p_info, 365 Error **errp) 366 { 367 BlockInfo *info = g_malloc0(sizeof(*info)); 368 BlockDriverState *bs = blk_bs(blk); 369 char *qdev; 370 371 /* Skip automatically inserted nodes that the user isn't aware of */ 372 bs = bdrv_skip_implicit_filters(bs); 373 374 info->device = g_strdup(blk_name(blk)); 375 info->type = g_strdup("unknown"); 376 info->locked = blk_dev_is_medium_locked(blk); 377 info->removable = blk_dev_has_removable_media(blk); 378 379 qdev = blk_get_attached_dev_id(blk); 380 if (qdev && *qdev) { 381 info->has_qdev = true; 382 info->qdev = qdev; 383 } else { 384 g_free(qdev); 385 } 386 387 if (blk_dev_has_tray(blk)) { 388 info->has_tray_open = true; 389 info->tray_open = blk_dev_is_tray_open(blk); 390 } 391 392 if (blk_iostatus_is_enabled(blk)) { 393 info->has_io_status = true; 394 info->io_status = blk_iostatus(blk); 395 } 396 397 if (bs && !QLIST_EMPTY(&bs->dirty_bitmaps)) { 398 info->has_dirty_bitmaps = true; 399 info->dirty_bitmaps = bdrv_query_dirty_bitmaps(bs); 400 } 401 402 if (bs && bs->drv) { 403 info->has_inserted = true; 404 info->inserted = bdrv_block_device_info(blk, bs, false, errp); 405 if (info->inserted == NULL) { 406 goto err; 407 } 408 } 409 410 *p_info = info; 411 return; 412 413 err: 414 qapi_free_BlockInfo(info); 415 } 416 417 static uint64List *uint64_list(uint64_t *list, int size) 418 { 419 int i; 420 uint64List *out_list = NULL; 421 uint64List **pout_list = &out_list; 422 423 for (i = 0; i < size; i++) { 424 uint64List *entry = g_new(uint64List, 1); 425 entry->value = list[i]; 426 *pout_list = entry; 427 pout_list = &entry->next; 428 } 429 430 *pout_list = NULL; 431 432 return out_list; 433 } 434 435 static void bdrv_latency_histogram_stats(BlockLatencyHistogram *hist, 436 bool *not_null, 437 BlockLatencyHistogramInfo **info) 438 { 439 *not_null = hist->bins != NULL; 440 if (*not_null) { 441 *info = g_new0(BlockLatencyHistogramInfo, 1); 442 443 (*info)->boundaries = uint64_list(hist->boundaries, hist->nbins - 1); 444 (*info)->bins = uint64_list(hist->bins, hist->nbins); 445 } 446 } 447 448 static void bdrv_query_blk_stats(BlockDeviceStats *ds, BlockBackend *blk) 449 { 450 BlockAcctStats *stats = blk_get_stats(blk); 451 BlockAcctTimedStats *ts = NULL; 452 453 ds->rd_bytes = stats->nr_bytes[BLOCK_ACCT_READ]; 454 ds->wr_bytes = stats->nr_bytes[BLOCK_ACCT_WRITE]; 455 ds->unmap_bytes = stats->nr_bytes[BLOCK_ACCT_UNMAP]; 456 ds->rd_operations = stats->nr_ops[BLOCK_ACCT_READ]; 457 ds->wr_operations = stats->nr_ops[BLOCK_ACCT_WRITE]; 458 ds->unmap_operations = stats->nr_ops[BLOCK_ACCT_UNMAP]; 459 460 ds->failed_rd_operations = stats->failed_ops[BLOCK_ACCT_READ]; 461 ds->failed_wr_operations = stats->failed_ops[BLOCK_ACCT_WRITE]; 462 ds->failed_flush_operations = stats->failed_ops[BLOCK_ACCT_FLUSH]; 463 ds->failed_unmap_operations = stats->failed_ops[BLOCK_ACCT_UNMAP]; 464 465 ds->invalid_rd_operations = stats->invalid_ops[BLOCK_ACCT_READ]; 466 ds->invalid_wr_operations = stats->invalid_ops[BLOCK_ACCT_WRITE]; 467 ds->invalid_flush_operations = 468 stats->invalid_ops[BLOCK_ACCT_FLUSH]; 469 ds->invalid_unmap_operations = stats->invalid_ops[BLOCK_ACCT_UNMAP]; 470 471 ds->rd_merged = stats->merged[BLOCK_ACCT_READ]; 472 ds->wr_merged = stats->merged[BLOCK_ACCT_WRITE]; 473 ds->unmap_merged = stats->merged[BLOCK_ACCT_UNMAP]; 474 ds->flush_operations = stats->nr_ops[BLOCK_ACCT_FLUSH]; 475 ds->wr_total_time_ns = stats->total_time_ns[BLOCK_ACCT_WRITE]; 476 ds->rd_total_time_ns = stats->total_time_ns[BLOCK_ACCT_READ]; 477 ds->flush_total_time_ns = stats->total_time_ns[BLOCK_ACCT_FLUSH]; 478 ds->unmap_total_time_ns = stats->total_time_ns[BLOCK_ACCT_UNMAP]; 479 480 ds->has_idle_time_ns = stats->last_access_time_ns > 0; 481 if (ds->has_idle_time_ns) { 482 ds->idle_time_ns = block_acct_idle_time_ns(stats); 483 } 484 485 ds->account_invalid = stats->account_invalid; 486 ds->account_failed = stats->account_failed; 487 488 while ((ts = block_acct_interval_next(stats, ts))) { 489 BlockDeviceTimedStats *dev_stats = g_malloc0(sizeof(*dev_stats)); 490 491 TimedAverage *rd = &ts->latency[BLOCK_ACCT_READ]; 492 TimedAverage *wr = &ts->latency[BLOCK_ACCT_WRITE]; 493 TimedAverage *fl = &ts->latency[BLOCK_ACCT_FLUSH]; 494 495 dev_stats->interval_length = ts->interval_length; 496 497 dev_stats->min_rd_latency_ns = timed_average_min(rd); 498 dev_stats->max_rd_latency_ns = timed_average_max(rd); 499 dev_stats->avg_rd_latency_ns = timed_average_avg(rd); 500 501 dev_stats->min_wr_latency_ns = timed_average_min(wr); 502 dev_stats->max_wr_latency_ns = timed_average_max(wr); 503 dev_stats->avg_wr_latency_ns = timed_average_avg(wr); 504 505 dev_stats->min_flush_latency_ns = timed_average_min(fl); 506 dev_stats->max_flush_latency_ns = timed_average_max(fl); 507 dev_stats->avg_flush_latency_ns = timed_average_avg(fl); 508 509 dev_stats->avg_rd_queue_depth = 510 block_acct_queue_depth(ts, BLOCK_ACCT_READ); 511 dev_stats->avg_wr_queue_depth = 512 block_acct_queue_depth(ts, BLOCK_ACCT_WRITE); 513 514 QAPI_LIST_PREPEND(ds->timed_stats, dev_stats); 515 } 516 517 bdrv_latency_histogram_stats(&stats->latency_histogram[BLOCK_ACCT_READ], 518 &ds->has_rd_latency_histogram, 519 &ds->rd_latency_histogram); 520 bdrv_latency_histogram_stats(&stats->latency_histogram[BLOCK_ACCT_WRITE], 521 &ds->has_wr_latency_histogram, 522 &ds->wr_latency_histogram); 523 bdrv_latency_histogram_stats(&stats->latency_histogram[BLOCK_ACCT_FLUSH], 524 &ds->has_flush_latency_histogram, 525 &ds->flush_latency_histogram); 526 } 527 528 static BlockStats *bdrv_query_bds_stats(BlockDriverState *bs, 529 bool blk_level) 530 { 531 BdrvChild *parent_child; 532 BlockDriverState *filter_or_cow_bs; 533 BlockStats *s = NULL; 534 535 s = g_malloc0(sizeof(*s)); 536 s->stats = g_malloc0(sizeof(*s->stats)); 537 538 if (!bs) { 539 return s; 540 } 541 542 /* Skip automatically inserted nodes that the user isn't aware of in 543 * a BlockBackend-level command. Stay at the exact node for a node-level 544 * command. */ 545 if (blk_level) { 546 bs = bdrv_skip_implicit_filters(bs); 547 } 548 549 if (bdrv_get_node_name(bs)[0]) { 550 s->has_node_name = true; 551 s->node_name = g_strdup(bdrv_get_node_name(bs)); 552 } 553 554 s->stats->wr_highest_offset = stat64_get(&bs->wr_highest_offset); 555 556 s->driver_specific = bdrv_get_specific_stats(bs); 557 if (s->driver_specific) { 558 s->has_driver_specific = true; 559 } 560 561 parent_child = bdrv_primary_child(bs); 562 if (!parent_child || 563 !(parent_child->role & (BDRV_CHILD_DATA | BDRV_CHILD_FILTERED))) 564 { 565 BdrvChild *c; 566 567 /* 568 * Look for a unique data-storing child. We do not need to look for 569 * filtered children, as there would be only one and it would have been 570 * the primary child. 571 */ 572 parent_child = NULL; 573 QLIST_FOREACH(c, &bs->children, next) { 574 if (c->role & BDRV_CHILD_DATA) { 575 if (parent_child) { 576 /* 577 * There are multiple data-storing children and we cannot 578 * choose between them. 579 */ 580 parent_child = NULL; 581 break; 582 } 583 parent_child = c; 584 } 585 } 586 } 587 if (parent_child) { 588 s->has_parent = true; 589 s->parent = bdrv_query_bds_stats(parent_child->bs, blk_level); 590 } 591 592 filter_or_cow_bs = bdrv_filter_or_cow_bs(bs); 593 if (blk_level && filter_or_cow_bs) { 594 /* 595 * Put any filtered or COW child here (for backwards 596 * compatibility to when we put bs0->backing here, which might 597 * be either) 598 */ 599 s->has_backing = true; 600 s->backing = bdrv_query_bds_stats(filter_or_cow_bs, blk_level); 601 } 602 603 return s; 604 } 605 606 BlockInfoList *qmp_query_block(Error **errp) 607 { 608 BlockInfoList *head = NULL, **p_next = &head; 609 BlockBackend *blk; 610 Error *local_err = NULL; 611 612 for (blk = blk_all_next(NULL); blk; blk = blk_all_next(blk)) { 613 BlockInfoList *info; 614 615 if (!*blk_name(blk) && !blk_get_attached_dev(blk)) { 616 continue; 617 } 618 619 info = g_malloc0(sizeof(*info)); 620 bdrv_query_info(blk, &info->value, &local_err); 621 if (local_err) { 622 error_propagate(errp, local_err); 623 g_free(info); 624 qapi_free_BlockInfoList(head); 625 return NULL; 626 } 627 628 *p_next = info; 629 p_next = &info->next; 630 } 631 632 return head; 633 } 634 635 BlockStatsList *qmp_query_blockstats(bool has_query_nodes, 636 bool query_nodes, 637 Error **errp) 638 { 639 BlockStatsList *head = NULL, **p_next = &head; 640 BlockBackend *blk; 641 BlockDriverState *bs; 642 643 /* Just to be safe if query_nodes is not always initialized */ 644 if (has_query_nodes && query_nodes) { 645 for (bs = bdrv_next_node(NULL); bs; bs = bdrv_next_node(bs)) { 646 BlockStatsList *info = g_malloc0(sizeof(*info)); 647 AioContext *ctx = bdrv_get_aio_context(bs); 648 649 aio_context_acquire(ctx); 650 info->value = bdrv_query_bds_stats(bs, false); 651 aio_context_release(ctx); 652 653 *p_next = info; 654 p_next = &info->next; 655 } 656 } else { 657 for (blk = blk_all_next(NULL); blk; blk = blk_all_next(blk)) { 658 BlockStatsList *info; 659 AioContext *ctx = blk_get_aio_context(blk); 660 BlockStats *s; 661 char *qdev; 662 663 if (!*blk_name(blk) && !blk_get_attached_dev(blk)) { 664 continue; 665 } 666 667 aio_context_acquire(ctx); 668 s = bdrv_query_bds_stats(blk_bs(blk), true); 669 s->has_device = true; 670 s->device = g_strdup(blk_name(blk)); 671 672 qdev = blk_get_attached_dev_id(blk); 673 if (qdev && *qdev) { 674 s->has_qdev = true; 675 s->qdev = qdev; 676 } else { 677 g_free(qdev); 678 } 679 680 bdrv_query_blk_stats(s->stats, blk); 681 aio_context_release(ctx); 682 683 info = g_malloc0(sizeof(*info)); 684 info->value = s; 685 *p_next = info; 686 p_next = &info->next; 687 } 688 } 689 690 return head; 691 } 692 693 void bdrv_snapshot_dump(QEMUSnapshotInfo *sn) 694 { 695 char date_buf[128], clock_buf[128]; 696 char icount_buf[128] = {0}; 697 struct tm tm; 698 time_t ti; 699 int64_t secs; 700 char *sizing = NULL; 701 702 if (!sn) { 703 qemu_printf("%-10s%-18s%7s%20s%13s%11s", 704 "ID", "TAG", "VM SIZE", "DATE", "VM CLOCK", "ICOUNT"); 705 } else { 706 ti = sn->date_sec; 707 localtime_r(&ti, &tm); 708 strftime(date_buf, sizeof(date_buf), 709 "%Y-%m-%d %H:%M:%S", &tm); 710 secs = sn->vm_clock_nsec / 1000000000; 711 snprintf(clock_buf, sizeof(clock_buf), 712 "%02d:%02d:%02d.%03d", 713 (int)(secs / 3600), 714 (int)((secs / 60) % 60), 715 (int)(secs % 60), 716 (int)((sn->vm_clock_nsec / 1000000) % 1000)); 717 sizing = size_to_str(sn->vm_state_size); 718 if (sn->icount != -1ULL) { 719 snprintf(icount_buf, sizeof(icount_buf), 720 "%"PRId64, sn->icount); 721 } 722 qemu_printf("%-9s %-17s %7s%20s%13s%11s", 723 sn->id_str, sn->name, 724 sizing, 725 date_buf, 726 clock_buf, 727 icount_buf); 728 } 729 g_free(sizing); 730 } 731 732 static void dump_qdict(int indentation, QDict *dict); 733 static void dump_qlist(int indentation, QList *list); 734 735 static void dump_qobject(int comp_indent, QObject *obj) 736 { 737 switch (qobject_type(obj)) { 738 case QTYPE_QNUM: { 739 QNum *value = qobject_to(QNum, obj); 740 char *tmp = qnum_to_string(value); 741 qemu_printf("%s", tmp); 742 g_free(tmp); 743 break; 744 } 745 case QTYPE_QSTRING: { 746 QString *value = qobject_to(QString, obj); 747 qemu_printf("%s", qstring_get_str(value)); 748 break; 749 } 750 case QTYPE_QDICT: { 751 QDict *value = qobject_to(QDict, obj); 752 dump_qdict(comp_indent, value); 753 break; 754 } 755 case QTYPE_QLIST: { 756 QList *value = qobject_to(QList, obj); 757 dump_qlist(comp_indent, value); 758 break; 759 } 760 case QTYPE_QBOOL: { 761 QBool *value = qobject_to(QBool, obj); 762 qemu_printf("%s", qbool_get_bool(value) ? "true" : "false"); 763 break; 764 } 765 default: 766 abort(); 767 } 768 } 769 770 static void dump_qlist(int indentation, QList *list) 771 { 772 const QListEntry *entry; 773 int i = 0; 774 775 for (entry = qlist_first(list); entry; entry = qlist_next(entry), i++) { 776 QType type = qobject_type(entry->value); 777 bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST); 778 qemu_printf("%*s[%i]:%c", indentation * 4, "", i, 779 composite ? '\n' : ' '); 780 dump_qobject(indentation + 1, entry->value); 781 if (!composite) { 782 qemu_printf("\n"); 783 } 784 } 785 } 786 787 static void dump_qdict(int indentation, QDict *dict) 788 { 789 const QDictEntry *entry; 790 791 for (entry = qdict_first(dict); entry; entry = qdict_next(dict, entry)) { 792 QType type = qobject_type(entry->value); 793 bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST); 794 char *key = g_malloc(strlen(entry->key) + 1); 795 int i; 796 797 /* replace dashes with spaces in key (variable) names */ 798 for (i = 0; entry->key[i]; i++) { 799 key[i] = entry->key[i] == '-' ? ' ' : entry->key[i]; 800 } 801 key[i] = 0; 802 qemu_printf("%*s%s:%c", indentation * 4, "", key, 803 composite ? '\n' : ' '); 804 dump_qobject(indentation + 1, entry->value); 805 if (!composite) { 806 qemu_printf("\n"); 807 } 808 g_free(key); 809 } 810 } 811 812 void bdrv_image_info_specific_dump(ImageInfoSpecific *info_spec) 813 { 814 QObject *obj, *data; 815 Visitor *v = qobject_output_visitor_new(&obj); 816 817 visit_type_ImageInfoSpecific(v, NULL, &info_spec, &error_abort); 818 visit_complete(v, &obj); 819 data = qdict_get(qobject_to(QDict, obj), "data"); 820 dump_qobject(1, data); 821 qobject_unref(obj); 822 visit_free(v); 823 } 824 825 void bdrv_image_info_dump(ImageInfo *info) 826 { 827 char *size_buf, *dsize_buf; 828 if (!info->has_actual_size) { 829 dsize_buf = g_strdup("unavailable"); 830 } else { 831 dsize_buf = size_to_str(info->actual_size); 832 } 833 size_buf = size_to_str(info->virtual_size); 834 qemu_printf("image: %s\n" 835 "file format: %s\n" 836 "virtual size: %s (%" PRId64 " bytes)\n" 837 "disk size: %s\n", 838 info->filename, info->format, size_buf, 839 info->virtual_size, 840 dsize_buf); 841 g_free(size_buf); 842 g_free(dsize_buf); 843 844 if (info->has_encrypted && info->encrypted) { 845 qemu_printf("encrypted: yes\n"); 846 } 847 848 if (info->has_cluster_size) { 849 qemu_printf("cluster_size: %" PRId64 "\n", 850 info->cluster_size); 851 } 852 853 if (info->has_dirty_flag && info->dirty_flag) { 854 qemu_printf("cleanly shut down: no\n"); 855 } 856 857 if (info->has_backing_filename) { 858 qemu_printf("backing file: %s", info->backing_filename); 859 if (!info->has_full_backing_filename) { 860 qemu_printf(" (cannot determine actual path)"); 861 } else if (strcmp(info->backing_filename, 862 info->full_backing_filename) != 0) { 863 qemu_printf(" (actual path: %s)", info->full_backing_filename); 864 } 865 qemu_printf("\n"); 866 if (info->has_backing_filename_format) { 867 qemu_printf("backing file format: %s\n", 868 info->backing_filename_format); 869 } 870 } 871 872 if (info->has_snapshots) { 873 SnapshotInfoList *elem; 874 875 qemu_printf("Snapshot list:\n"); 876 bdrv_snapshot_dump(NULL); 877 qemu_printf("\n"); 878 879 /* Ideally bdrv_snapshot_dump() would operate on SnapshotInfoList but 880 * we convert to the block layer's native QEMUSnapshotInfo for now. 881 */ 882 for (elem = info->snapshots; elem; elem = elem->next) { 883 QEMUSnapshotInfo sn = { 884 .vm_state_size = elem->value->vm_state_size, 885 .date_sec = elem->value->date_sec, 886 .date_nsec = elem->value->date_nsec, 887 .vm_clock_nsec = elem->value->vm_clock_sec * 1000000000ULL + 888 elem->value->vm_clock_nsec, 889 .icount = elem->value->has_icount ? 890 elem->value->icount : -1ULL, 891 }; 892 893 pstrcpy(sn.id_str, sizeof(sn.id_str), elem->value->id); 894 pstrcpy(sn.name, sizeof(sn.name), elem->value->name); 895 bdrv_snapshot_dump(&sn); 896 qemu_printf("\n"); 897 } 898 } 899 900 if (info->has_format_specific) { 901 qemu_printf("Format specific information:\n"); 902 bdrv_image_info_specific_dump(info->format_specific); 903 } 904 } 905