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