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 *head = NULL, **tail = &head; 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 QAPI_LIST_APPEND(tail, info); 237 } 238 239 g_free(sn_tab); 240 *p_list = head; 241 return 0; 242 } 243 244 /** 245 * bdrv_query_image_info: 246 * @bs: block device to examine 247 * @p_info: location to store image information 248 * @errp: location to store error information 249 * 250 * Store "flat" image information in @p_info. 251 * 252 * "Flat" means it does *not* query backing image information, 253 * i.e. (*pinfo)->has_backing_image will be set to false and 254 * (*pinfo)->backing_image to NULL even when the image does in fact have 255 * a backing image. 256 * 257 * @p_info will be set only on success. On error, store error in @errp. 258 */ 259 void bdrv_query_image_info(BlockDriverState *bs, 260 ImageInfo **p_info, 261 Error **errp) 262 { 263 int64_t size; 264 const char *backing_filename; 265 BlockDriverInfo bdi; 266 int ret; 267 Error *err = NULL; 268 ImageInfo *info; 269 270 aio_context_acquire(bdrv_get_aio_context(bs)); 271 272 size = bdrv_getlength(bs); 273 if (size < 0) { 274 error_setg_errno(errp, -size, "Can't get image size '%s'", 275 bs->exact_filename); 276 goto out; 277 } 278 279 bdrv_refresh_filename(bs); 280 281 info = g_new0(ImageInfo, 1); 282 info->filename = g_strdup(bs->filename); 283 info->format = g_strdup(bdrv_get_format_name(bs)); 284 info->virtual_size = size; 285 info->actual_size = bdrv_get_allocated_file_size(bs); 286 info->has_actual_size = info->actual_size >= 0; 287 if (bs->encrypted) { 288 info->encrypted = true; 289 info->has_encrypted = true; 290 } 291 if (bdrv_get_info(bs, &bdi) >= 0) { 292 if (bdi.cluster_size != 0) { 293 info->cluster_size = bdi.cluster_size; 294 info->has_cluster_size = true; 295 } 296 info->dirty_flag = bdi.is_dirty; 297 info->has_dirty_flag = true; 298 } 299 info->format_specific = bdrv_get_specific_info(bs, &err); 300 if (err) { 301 error_propagate(errp, err); 302 qapi_free_ImageInfo(info); 303 goto out; 304 } 305 info->has_format_specific = info->format_specific != NULL; 306 307 backing_filename = bs->backing_file; 308 if (backing_filename[0] != '\0') { 309 char *backing_filename2; 310 311 info->backing_filename = g_strdup(backing_filename); 312 info->has_backing_filename = true; 313 backing_filename2 = bdrv_get_full_backing_filename(bs, NULL); 314 315 /* Always report the full_backing_filename if present, even if it's the 316 * same as backing_filename. That they are same is useful info. */ 317 if (backing_filename2) { 318 info->full_backing_filename = g_strdup(backing_filename2); 319 info->has_full_backing_filename = true; 320 } 321 322 if (bs->backing_format[0]) { 323 info->backing_filename_format = g_strdup(bs->backing_format); 324 info->has_backing_filename_format = true; 325 } 326 g_free(backing_filename2); 327 } 328 329 ret = bdrv_query_snapshot_info_list(bs, &info->snapshots, &err); 330 switch (ret) { 331 case 0: 332 if (info->snapshots) { 333 info->has_snapshots = true; 334 } 335 break; 336 /* recoverable error */ 337 case -ENOMEDIUM: 338 case -ENOTSUP: 339 error_free(err); 340 break; 341 default: 342 error_propagate(errp, err); 343 qapi_free_ImageInfo(info); 344 goto out; 345 } 346 347 *p_info = info; 348 349 out: 350 aio_context_release(bdrv_get_aio_context(bs)); 351 } 352 353 /* @p_info will be set only on success. */ 354 static void bdrv_query_info(BlockBackend *blk, BlockInfo **p_info, 355 Error **errp) 356 { 357 BlockInfo *info = g_malloc0(sizeof(*info)); 358 BlockDriverState *bs = blk_bs(blk); 359 char *qdev; 360 361 /* Skip automatically inserted nodes that the user isn't aware of */ 362 bs = bdrv_skip_implicit_filters(bs); 363 364 info->device = g_strdup(blk_name(blk)); 365 info->type = g_strdup("unknown"); 366 info->locked = blk_dev_is_medium_locked(blk); 367 info->removable = blk_dev_has_removable_media(blk); 368 369 qdev = blk_get_attached_dev_id(blk); 370 if (qdev && *qdev) { 371 info->has_qdev = true; 372 info->qdev = qdev; 373 } else { 374 g_free(qdev); 375 } 376 377 if (blk_dev_has_tray(blk)) { 378 info->has_tray_open = true; 379 info->tray_open = blk_dev_is_tray_open(blk); 380 } 381 382 if (blk_iostatus_is_enabled(blk)) { 383 info->has_io_status = true; 384 info->io_status = blk_iostatus(blk); 385 } 386 387 if (bs && !QLIST_EMPTY(&bs->dirty_bitmaps)) { 388 info->has_dirty_bitmaps = true; 389 info->dirty_bitmaps = bdrv_query_dirty_bitmaps(bs); 390 } 391 392 if (bs && bs->drv) { 393 info->has_inserted = true; 394 info->inserted = bdrv_block_device_info(blk, bs, false, errp); 395 if (info->inserted == NULL) { 396 goto err; 397 } 398 } 399 400 *p_info = info; 401 return; 402 403 err: 404 qapi_free_BlockInfo(info); 405 } 406 407 static uint64List *uint64_list(uint64_t *list, int size) 408 { 409 int i; 410 uint64List *out_list = NULL; 411 uint64List **tail = &out_list; 412 413 for (i = 0; i < size; i++) { 414 QAPI_LIST_APPEND(tail, list[i]); 415 } 416 417 return out_list; 418 } 419 420 static void bdrv_latency_histogram_stats(BlockLatencyHistogram *hist, 421 bool *not_null, 422 BlockLatencyHistogramInfo **info) 423 { 424 *not_null = hist->bins != NULL; 425 if (*not_null) { 426 *info = g_new0(BlockLatencyHistogramInfo, 1); 427 428 (*info)->boundaries = uint64_list(hist->boundaries, hist->nbins - 1); 429 (*info)->bins = uint64_list(hist->bins, hist->nbins); 430 } 431 } 432 433 static void bdrv_query_blk_stats(BlockDeviceStats *ds, BlockBackend *blk) 434 { 435 BlockAcctStats *stats = blk_get_stats(blk); 436 BlockAcctTimedStats *ts = NULL; 437 438 ds->rd_bytes = stats->nr_bytes[BLOCK_ACCT_READ]; 439 ds->wr_bytes = stats->nr_bytes[BLOCK_ACCT_WRITE]; 440 ds->unmap_bytes = stats->nr_bytes[BLOCK_ACCT_UNMAP]; 441 ds->rd_operations = stats->nr_ops[BLOCK_ACCT_READ]; 442 ds->wr_operations = stats->nr_ops[BLOCK_ACCT_WRITE]; 443 ds->unmap_operations = stats->nr_ops[BLOCK_ACCT_UNMAP]; 444 445 ds->failed_rd_operations = stats->failed_ops[BLOCK_ACCT_READ]; 446 ds->failed_wr_operations = stats->failed_ops[BLOCK_ACCT_WRITE]; 447 ds->failed_flush_operations = stats->failed_ops[BLOCK_ACCT_FLUSH]; 448 ds->failed_unmap_operations = stats->failed_ops[BLOCK_ACCT_UNMAP]; 449 450 ds->invalid_rd_operations = stats->invalid_ops[BLOCK_ACCT_READ]; 451 ds->invalid_wr_operations = stats->invalid_ops[BLOCK_ACCT_WRITE]; 452 ds->invalid_flush_operations = 453 stats->invalid_ops[BLOCK_ACCT_FLUSH]; 454 ds->invalid_unmap_operations = stats->invalid_ops[BLOCK_ACCT_UNMAP]; 455 456 ds->rd_merged = stats->merged[BLOCK_ACCT_READ]; 457 ds->wr_merged = stats->merged[BLOCK_ACCT_WRITE]; 458 ds->unmap_merged = stats->merged[BLOCK_ACCT_UNMAP]; 459 ds->flush_operations = stats->nr_ops[BLOCK_ACCT_FLUSH]; 460 ds->wr_total_time_ns = stats->total_time_ns[BLOCK_ACCT_WRITE]; 461 ds->rd_total_time_ns = stats->total_time_ns[BLOCK_ACCT_READ]; 462 ds->flush_total_time_ns = stats->total_time_ns[BLOCK_ACCT_FLUSH]; 463 ds->unmap_total_time_ns = stats->total_time_ns[BLOCK_ACCT_UNMAP]; 464 465 ds->has_idle_time_ns = stats->last_access_time_ns > 0; 466 if (ds->has_idle_time_ns) { 467 ds->idle_time_ns = block_acct_idle_time_ns(stats); 468 } 469 470 ds->account_invalid = stats->account_invalid; 471 ds->account_failed = stats->account_failed; 472 473 while ((ts = block_acct_interval_next(stats, ts))) { 474 BlockDeviceTimedStats *dev_stats = g_malloc0(sizeof(*dev_stats)); 475 476 TimedAverage *rd = &ts->latency[BLOCK_ACCT_READ]; 477 TimedAverage *wr = &ts->latency[BLOCK_ACCT_WRITE]; 478 TimedAverage *fl = &ts->latency[BLOCK_ACCT_FLUSH]; 479 480 dev_stats->interval_length = ts->interval_length; 481 482 dev_stats->min_rd_latency_ns = timed_average_min(rd); 483 dev_stats->max_rd_latency_ns = timed_average_max(rd); 484 dev_stats->avg_rd_latency_ns = timed_average_avg(rd); 485 486 dev_stats->min_wr_latency_ns = timed_average_min(wr); 487 dev_stats->max_wr_latency_ns = timed_average_max(wr); 488 dev_stats->avg_wr_latency_ns = timed_average_avg(wr); 489 490 dev_stats->min_flush_latency_ns = timed_average_min(fl); 491 dev_stats->max_flush_latency_ns = timed_average_max(fl); 492 dev_stats->avg_flush_latency_ns = timed_average_avg(fl); 493 494 dev_stats->avg_rd_queue_depth = 495 block_acct_queue_depth(ts, BLOCK_ACCT_READ); 496 dev_stats->avg_wr_queue_depth = 497 block_acct_queue_depth(ts, BLOCK_ACCT_WRITE); 498 499 QAPI_LIST_PREPEND(ds->timed_stats, dev_stats); 500 } 501 502 bdrv_latency_histogram_stats(&stats->latency_histogram[BLOCK_ACCT_READ], 503 &ds->has_rd_latency_histogram, 504 &ds->rd_latency_histogram); 505 bdrv_latency_histogram_stats(&stats->latency_histogram[BLOCK_ACCT_WRITE], 506 &ds->has_wr_latency_histogram, 507 &ds->wr_latency_histogram); 508 bdrv_latency_histogram_stats(&stats->latency_histogram[BLOCK_ACCT_FLUSH], 509 &ds->has_flush_latency_histogram, 510 &ds->flush_latency_histogram); 511 } 512 513 static BlockStats *bdrv_query_bds_stats(BlockDriverState *bs, 514 bool blk_level) 515 { 516 BdrvChild *parent_child; 517 BlockDriverState *filter_or_cow_bs; 518 BlockStats *s = NULL; 519 520 s = g_malloc0(sizeof(*s)); 521 s->stats = g_malloc0(sizeof(*s->stats)); 522 523 if (!bs) { 524 return s; 525 } 526 527 /* Skip automatically inserted nodes that the user isn't aware of in 528 * a BlockBackend-level command. Stay at the exact node for a node-level 529 * command. */ 530 if (blk_level) { 531 bs = bdrv_skip_implicit_filters(bs); 532 } 533 534 if (bdrv_get_node_name(bs)[0]) { 535 s->has_node_name = true; 536 s->node_name = g_strdup(bdrv_get_node_name(bs)); 537 } 538 539 s->stats->wr_highest_offset = stat64_get(&bs->wr_highest_offset); 540 541 s->driver_specific = bdrv_get_specific_stats(bs); 542 if (s->driver_specific) { 543 s->has_driver_specific = true; 544 } 545 546 parent_child = bdrv_primary_child(bs); 547 if (!parent_child || 548 !(parent_child->role & (BDRV_CHILD_DATA | BDRV_CHILD_FILTERED))) 549 { 550 BdrvChild *c; 551 552 /* 553 * Look for a unique data-storing child. We do not need to look for 554 * filtered children, as there would be only one and it would have been 555 * the primary child. 556 */ 557 parent_child = NULL; 558 QLIST_FOREACH(c, &bs->children, next) { 559 if (c->role & BDRV_CHILD_DATA) { 560 if (parent_child) { 561 /* 562 * There are multiple data-storing children and we cannot 563 * choose between them. 564 */ 565 parent_child = NULL; 566 break; 567 } 568 parent_child = c; 569 } 570 } 571 } 572 if (parent_child) { 573 s->has_parent = true; 574 s->parent = bdrv_query_bds_stats(parent_child->bs, blk_level); 575 } 576 577 filter_or_cow_bs = bdrv_filter_or_cow_bs(bs); 578 if (blk_level && filter_or_cow_bs) { 579 /* 580 * Put any filtered or COW child here (for backwards 581 * compatibility to when we put bs0->backing here, which might 582 * be either) 583 */ 584 s->has_backing = true; 585 s->backing = bdrv_query_bds_stats(filter_or_cow_bs, blk_level); 586 } 587 588 return s; 589 } 590 591 BlockInfoList *qmp_query_block(Error **errp) 592 { 593 BlockInfoList *head = NULL, **p_next = &head; 594 BlockBackend *blk; 595 Error *local_err = NULL; 596 597 for (blk = blk_all_next(NULL); blk; blk = blk_all_next(blk)) { 598 BlockInfoList *info; 599 600 if (!*blk_name(blk) && !blk_get_attached_dev(blk)) { 601 continue; 602 } 603 604 info = g_malloc0(sizeof(*info)); 605 bdrv_query_info(blk, &info->value, &local_err); 606 if (local_err) { 607 error_propagate(errp, local_err); 608 g_free(info); 609 qapi_free_BlockInfoList(head); 610 return NULL; 611 } 612 613 *p_next = info; 614 p_next = &info->next; 615 } 616 617 return head; 618 } 619 620 BlockStatsList *qmp_query_blockstats(bool has_query_nodes, 621 bool query_nodes, 622 Error **errp) 623 { 624 BlockStatsList *head = NULL, **tail = &head; 625 BlockBackend *blk; 626 BlockDriverState *bs; 627 628 /* Just to be safe if query_nodes is not always initialized */ 629 if (has_query_nodes && query_nodes) { 630 for (bs = bdrv_next_node(NULL); bs; bs = bdrv_next_node(bs)) { 631 AioContext *ctx = bdrv_get_aio_context(bs); 632 633 aio_context_acquire(ctx); 634 QAPI_LIST_APPEND(tail, bdrv_query_bds_stats(bs, false)); 635 aio_context_release(ctx); 636 } 637 } else { 638 for (blk = blk_all_next(NULL); blk; blk = blk_all_next(blk)) { 639 AioContext *ctx = blk_get_aio_context(blk); 640 BlockStats *s; 641 char *qdev; 642 643 if (!*blk_name(blk) && !blk_get_attached_dev(blk)) { 644 continue; 645 } 646 647 aio_context_acquire(ctx); 648 s = bdrv_query_bds_stats(blk_bs(blk), true); 649 s->has_device = true; 650 s->device = g_strdup(blk_name(blk)); 651 652 qdev = blk_get_attached_dev_id(blk); 653 if (qdev && *qdev) { 654 s->has_qdev = true; 655 s->qdev = qdev; 656 } else { 657 g_free(qdev); 658 } 659 660 bdrv_query_blk_stats(s->stats, blk); 661 aio_context_release(ctx); 662 663 QAPI_LIST_APPEND(tail, s); 664 } 665 } 666 667 return head; 668 } 669 670 void bdrv_snapshot_dump(QEMUSnapshotInfo *sn) 671 { 672 char date_buf[128], clock_buf[128]; 673 char icount_buf[128] = {0}; 674 struct tm tm; 675 time_t ti; 676 int64_t secs; 677 char *sizing = NULL; 678 679 if (!sn) { 680 qemu_printf("%-10s%-17s%8s%20s%13s%11s", 681 "ID", "TAG", "VM SIZE", "DATE", "VM CLOCK", "ICOUNT"); 682 } else { 683 ti = sn->date_sec; 684 localtime_r(&ti, &tm); 685 strftime(date_buf, sizeof(date_buf), 686 "%Y-%m-%d %H:%M:%S", &tm); 687 secs = sn->vm_clock_nsec / 1000000000; 688 snprintf(clock_buf, sizeof(clock_buf), 689 "%02d:%02d:%02d.%03d", 690 (int)(secs / 3600), 691 (int)((secs / 60) % 60), 692 (int)(secs % 60), 693 (int)((sn->vm_clock_nsec / 1000000) % 1000)); 694 sizing = size_to_str(sn->vm_state_size); 695 if (sn->icount != -1ULL) { 696 snprintf(icount_buf, sizeof(icount_buf), 697 "%"PRId64, sn->icount); 698 } 699 qemu_printf("%-9s %-16s %8s%20s%13s%11s", 700 sn->id_str, sn->name, 701 sizing, 702 date_buf, 703 clock_buf, 704 icount_buf); 705 } 706 g_free(sizing); 707 } 708 709 static void dump_qdict(int indentation, QDict *dict); 710 static void dump_qlist(int indentation, QList *list); 711 712 static void dump_qobject(int comp_indent, QObject *obj) 713 { 714 switch (qobject_type(obj)) { 715 case QTYPE_QNUM: { 716 QNum *value = qobject_to(QNum, obj); 717 char *tmp = qnum_to_string(value); 718 qemu_printf("%s", tmp); 719 g_free(tmp); 720 break; 721 } 722 case QTYPE_QSTRING: { 723 QString *value = qobject_to(QString, obj); 724 qemu_printf("%s", qstring_get_str(value)); 725 break; 726 } 727 case QTYPE_QDICT: { 728 QDict *value = qobject_to(QDict, obj); 729 dump_qdict(comp_indent, value); 730 break; 731 } 732 case QTYPE_QLIST: { 733 QList *value = qobject_to(QList, obj); 734 dump_qlist(comp_indent, value); 735 break; 736 } 737 case QTYPE_QBOOL: { 738 QBool *value = qobject_to(QBool, obj); 739 qemu_printf("%s", qbool_get_bool(value) ? "true" : "false"); 740 break; 741 } 742 default: 743 abort(); 744 } 745 } 746 747 static void dump_qlist(int indentation, QList *list) 748 { 749 const QListEntry *entry; 750 int i = 0; 751 752 for (entry = qlist_first(list); entry; entry = qlist_next(entry), i++) { 753 QType type = qobject_type(entry->value); 754 bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST); 755 qemu_printf("%*s[%i]:%c", indentation * 4, "", i, 756 composite ? '\n' : ' '); 757 dump_qobject(indentation + 1, entry->value); 758 if (!composite) { 759 qemu_printf("\n"); 760 } 761 } 762 } 763 764 static void dump_qdict(int indentation, QDict *dict) 765 { 766 const QDictEntry *entry; 767 768 for (entry = qdict_first(dict); entry; entry = qdict_next(dict, entry)) { 769 QType type = qobject_type(entry->value); 770 bool composite = (type == QTYPE_QDICT || type == QTYPE_QLIST); 771 char *key = g_malloc(strlen(entry->key) + 1); 772 int i; 773 774 /* replace dashes with spaces in key (variable) names */ 775 for (i = 0; entry->key[i]; i++) { 776 key[i] = entry->key[i] == '-' ? ' ' : entry->key[i]; 777 } 778 key[i] = 0; 779 qemu_printf("%*s%s:%c", indentation * 4, "", key, 780 composite ? '\n' : ' '); 781 dump_qobject(indentation + 1, entry->value); 782 if (!composite) { 783 qemu_printf("\n"); 784 } 785 g_free(key); 786 } 787 } 788 789 void bdrv_image_info_specific_dump(ImageInfoSpecific *info_spec) 790 { 791 QObject *obj, *data; 792 Visitor *v = qobject_output_visitor_new(&obj); 793 794 visit_type_ImageInfoSpecific(v, NULL, &info_spec, &error_abort); 795 visit_complete(v, &obj); 796 data = qdict_get(qobject_to(QDict, obj), "data"); 797 dump_qobject(1, data); 798 qobject_unref(obj); 799 visit_free(v); 800 } 801 802 void bdrv_image_info_dump(ImageInfo *info) 803 { 804 char *size_buf, *dsize_buf; 805 if (!info->has_actual_size) { 806 dsize_buf = g_strdup("unavailable"); 807 } else { 808 dsize_buf = size_to_str(info->actual_size); 809 } 810 size_buf = size_to_str(info->virtual_size); 811 qemu_printf("image: %s\n" 812 "file format: %s\n" 813 "virtual size: %s (%" PRId64 " bytes)\n" 814 "disk size: %s\n", 815 info->filename, info->format, size_buf, 816 info->virtual_size, 817 dsize_buf); 818 g_free(size_buf); 819 g_free(dsize_buf); 820 821 if (info->has_encrypted && info->encrypted) { 822 qemu_printf("encrypted: yes\n"); 823 } 824 825 if (info->has_cluster_size) { 826 qemu_printf("cluster_size: %" PRId64 "\n", 827 info->cluster_size); 828 } 829 830 if (info->has_dirty_flag && info->dirty_flag) { 831 qemu_printf("cleanly shut down: no\n"); 832 } 833 834 if (info->has_backing_filename) { 835 qemu_printf("backing file: %s", info->backing_filename); 836 if (!info->has_full_backing_filename) { 837 qemu_printf(" (cannot determine actual path)"); 838 } else if (strcmp(info->backing_filename, 839 info->full_backing_filename) != 0) { 840 qemu_printf(" (actual path: %s)", info->full_backing_filename); 841 } 842 qemu_printf("\n"); 843 if (info->has_backing_filename_format) { 844 qemu_printf("backing file format: %s\n", 845 info->backing_filename_format); 846 } 847 } 848 849 if (info->has_snapshots) { 850 SnapshotInfoList *elem; 851 852 qemu_printf("Snapshot list:\n"); 853 bdrv_snapshot_dump(NULL); 854 qemu_printf("\n"); 855 856 /* Ideally bdrv_snapshot_dump() would operate on SnapshotInfoList but 857 * we convert to the block layer's native QEMUSnapshotInfo for now. 858 */ 859 for (elem = info->snapshots; elem; elem = elem->next) { 860 QEMUSnapshotInfo sn = { 861 .vm_state_size = elem->value->vm_state_size, 862 .date_sec = elem->value->date_sec, 863 .date_nsec = elem->value->date_nsec, 864 .vm_clock_nsec = elem->value->vm_clock_sec * 1000000000ULL + 865 elem->value->vm_clock_nsec, 866 .icount = elem->value->has_icount ? 867 elem->value->icount : -1ULL, 868 }; 869 870 pstrcpy(sn.id_str, sizeof(sn.id_str), elem->value->id); 871 pstrcpy(sn.name, sizeof(sn.name), elem->value->name); 872 bdrv_snapshot_dump(&sn); 873 qemu_printf("\n"); 874 } 875 } 876 877 if (info->has_format_specific) { 878 qemu_printf("Format specific information:\n"); 879 bdrv_image_info_specific_dump(info->format_specific); 880 } 881 } 882