xref: /illumos-gate/usr/src/cmd/zdb/zdb.c (revision 2acef22db7808606888f8f92715629ff3ba555b9)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
24  * Copyright (c) 2013 by Delphix. All rights reserved.
25  */
26 
27 #include <stdio.h>
28 #include <unistd.h>
29 #include <stdio_ext.h>
30 #include <stdlib.h>
31 #include <ctype.h>
32 #include <sys/zfs_context.h>
33 #include <sys/spa.h>
34 #include <sys/spa_impl.h>
35 #include <sys/dmu.h>
36 #include <sys/zap.h>
37 #include <sys/fs/zfs.h>
38 #include <sys/zfs_znode.h>
39 #include <sys/zfs_sa.h>
40 #include <sys/sa.h>
41 #include <sys/sa_impl.h>
42 #include <sys/vdev.h>
43 #include <sys/vdev_impl.h>
44 #include <sys/metaslab_impl.h>
45 #include <sys/dmu_objset.h>
46 #include <sys/dsl_dir.h>
47 #include <sys/dsl_dataset.h>
48 #include <sys/dsl_pool.h>
49 #include <sys/dbuf.h>
50 #include <sys/zil.h>
51 #include <sys/zil_impl.h>
52 #include <sys/stat.h>
53 #include <sys/resource.h>
54 #include <sys/dmu_traverse.h>
55 #include <sys/zio_checksum.h>
56 #include <sys/zio_compress.h>
57 #include <sys/zfs_fuid.h>
58 #include <sys/arc.h>
59 #include <sys/ddt.h>
60 #include <sys/zfeature.h>
61 #include <zfs_comutil.h>
62 #undef ZFS_MAXNAMELEN
63 #undef verify
64 #include <libzfs.h>
65 
66 #define	ZDB_COMPRESS_NAME(idx) ((idx) < ZIO_COMPRESS_FUNCTIONS ?	\
67 	zio_compress_table[(idx)].ci_name : "UNKNOWN")
68 #define	ZDB_CHECKSUM_NAME(idx) ((idx) < ZIO_CHECKSUM_FUNCTIONS ?	\
69 	zio_checksum_table[(idx)].ci_name : "UNKNOWN")
70 #define	ZDB_OT_NAME(idx) ((idx) < DMU_OT_NUMTYPES ?	\
71 	dmu_ot[(idx)].ot_name : DMU_OT_IS_VALID(idx) ?	\
72 	dmu_ot_byteswap[DMU_OT_BYTESWAP(idx)].ob_name : "UNKNOWN")
73 #define	ZDB_OT_TYPE(idx) ((idx) < DMU_OT_NUMTYPES ? (idx) :		\
74 	(((idx) == DMU_OTN_ZAP_DATA || (idx) == DMU_OTN_ZAP_METADATA) ?	\
75 	DMU_OT_ZAP_OTHER : DMU_OT_NUMTYPES))
76 
77 #ifndef lint
78 extern int zfs_recover;
79 #else
80 int zfs_recover;
81 #endif
82 
83 const char cmdname[] = "zdb";
84 uint8_t dump_opt[256];
85 
86 typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size);
87 
88 extern void dump_intent_log(zilog_t *);
89 uint64_t *zopt_object = NULL;
90 int zopt_objects = 0;
91 libzfs_handle_t *g_zfs;
92 uint64_t max_inflight = 200;
93 
94 /*
95  * These libumem hooks provide a reasonable set of defaults for the allocator's
96  * debugging facilities.
97  */
98 const char *
99 _umem_debug_init()
100 {
101 	return ("default,verbose"); /* $UMEM_DEBUG setting */
102 }
103 
104 const char *
105 _umem_logging_init(void)
106 {
107 	return ("fail,contents"); /* $UMEM_LOGGING setting */
108 }
109 
110 static void
111 usage(void)
112 {
113 	(void) fprintf(stderr,
114 	    "Usage: %s [-CumdibcsDvhLXFPA] [-t txg] [-e [-p path...]] "
115 	    "[-U config] [-M inflight I/Os] poolname [object...]\n"
116 	    "       %s [-divPA] [-e -p path...] [-U config] dataset "
117 	    "[object...]\n"
118 	    "       %s -m [-LXFPA] [-t txg] [-e [-p path...]] [-U config] "
119 	    "poolname [vdev [metaslab...]]\n"
120 	    "       %s -R [-A] [-e [-p path...]] poolname "
121 	    "vdev:offset:size[:flags]\n"
122 	    "       %s -S [-PA] [-e [-p path...]] [-U config] poolname\n"
123 	    "       %s -l [-uA] device\n"
124 	    "       %s -C [-A] [-U config]\n\n",
125 	    cmdname, cmdname, cmdname, cmdname, cmdname, cmdname, cmdname);
126 
127 	(void) fprintf(stderr, "    Dataset name must include at least one "
128 	    "separator character '/' or '@'\n");
129 	(void) fprintf(stderr, "    If dataset name is specified, only that "
130 	    "dataset is dumped\n");
131 	(void) fprintf(stderr, "    If object numbers are specified, only "
132 	    "those objects are dumped\n\n");
133 	(void) fprintf(stderr, "    Options to control amount of output:\n");
134 	(void) fprintf(stderr, "        -u uberblock\n");
135 	(void) fprintf(stderr, "        -d dataset(s)\n");
136 	(void) fprintf(stderr, "        -i intent logs\n");
137 	(void) fprintf(stderr, "        -C config (or cachefile if alone)\n");
138 	(void) fprintf(stderr, "        -h pool history\n");
139 	(void) fprintf(stderr, "        -b block statistics\n");
140 	(void) fprintf(stderr, "        -m metaslabs\n");
141 	(void) fprintf(stderr, "        -c checksum all metadata (twice for "
142 	    "all data) blocks\n");
143 	(void) fprintf(stderr, "        -s report stats on zdb's I/O\n");
144 	(void) fprintf(stderr, "        -D dedup statistics\n");
145 	(void) fprintf(stderr, "        -S simulate dedup to measure effect\n");
146 	(void) fprintf(stderr, "        -v verbose (applies to all others)\n");
147 	(void) fprintf(stderr, "        -l dump label contents\n");
148 	(void) fprintf(stderr, "        -L disable leak tracking (do not "
149 	    "load spacemaps)\n");
150 	(void) fprintf(stderr, "        -R read and display block from a "
151 	    "device\n\n");
152 	(void) fprintf(stderr, "    Below options are intended for use "
153 	    "with other options (except -l):\n");
154 	(void) fprintf(stderr, "        -A ignore assertions (-A), enable "
155 	    "panic recovery (-AA) or both (-AAA)\n");
156 	(void) fprintf(stderr, "        -F attempt automatic rewind within "
157 	    "safe range of transaction groups\n");
158 	(void) fprintf(stderr, "        -U <cachefile_path> -- use alternate "
159 	    "cachefile\n");
160 	(void) fprintf(stderr, "        -X attempt extreme rewind (does not "
161 	    "work with dataset)\n");
162 	(void) fprintf(stderr, "        -e pool is exported/destroyed/"
163 	    "has altroot/not in a cachefile\n");
164 	(void) fprintf(stderr, "        -p <path> -- use one or more with "
165 	    "-e to specify path to vdev dir\n");
166 	(void) fprintf(stderr, "        -P print numbers in parseable form\n");
167 	(void) fprintf(stderr, "        -t <txg> -- highest txg to use when "
168 	    "searching for uberblocks\n");
169 	(void) fprintf(stderr, "        -M <number of inflight I/Os> -- "
170 	    "specify the maximum number of checksumming I/Os [default is 200]");
171 	(void) fprintf(stderr, "Specify an option more than once (e.g. -bb) "
172 	    "to make only that option verbose\n");
173 	(void) fprintf(stderr, "Default is to dump everything non-verbosely\n");
174 	exit(1);
175 }
176 
177 /*
178  * Called for usage errors that are discovered after a call to spa_open(),
179  * dmu_bonus_hold(), or pool_match().  abort() is called for other errors.
180  */
181 
182 static void
183 fatal(const char *fmt, ...)
184 {
185 	va_list ap;
186 
187 	va_start(ap, fmt);
188 	(void) fprintf(stderr, "%s: ", cmdname);
189 	(void) vfprintf(stderr, fmt, ap);
190 	va_end(ap);
191 	(void) fprintf(stderr, "\n");
192 
193 	exit(1);
194 }
195 
196 /* ARGSUSED */
197 static void
198 dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size)
199 {
200 	nvlist_t *nv;
201 	size_t nvsize = *(uint64_t *)data;
202 	char *packed = umem_alloc(nvsize, UMEM_NOFAIL);
203 
204 	VERIFY(0 == dmu_read(os, object, 0, nvsize, packed, DMU_READ_PREFETCH));
205 
206 	VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0);
207 
208 	umem_free(packed, nvsize);
209 
210 	dump_nvlist(nv, 8);
211 
212 	nvlist_free(nv);
213 }
214 
215 /* ARGSUSED */
216 static void
217 dump_history_offsets(objset_t *os, uint64_t object, void *data, size_t size)
218 {
219 	spa_history_phys_t *shp = data;
220 
221 	if (shp == NULL)
222 		return;
223 
224 	(void) printf("\t\tpool_create_len = %llu\n",
225 	    (u_longlong_t)shp->sh_pool_create_len);
226 	(void) printf("\t\tphys_max_off = %llu\n",
227 	    (u_longlong_t)shp->sh_phys_max_off);
228 	(void) printf("\t\tbof = %llu\n",
229 	    (u_longlong_t)shp->sh_bof);
230 	(void) printf("\t\teof = %llu\n",
231 	    (u_longlong_t)shp->sh_eof);
232 	(void) printf("\t\trecords_lost = %llu\n",
233 	    (u_longlong_t)shp->sh_records_lost);
234 }
235 
236 static void
237 zdb_nicenum(uint64_t num, char *buf)
238 {
239 	if (dump_opt['P'])
240 		(void) sprintf(buf, "%llu", (longlong_t)num);
241 	else
242 		nicenum(num, buf);
243 }
244 
245 const char histo_stars[] = "****************************************";
246 const int histo_width = sizeof (histo_stars) - 1;
247 
248 static void
249 dump_histogram(const uint64_t *histo, int size, int offset)
250 {
251 	int i;
252 	int minidx = size - 1;
253 	int maxidx = 0;
254 	uint64_t max = 0;
255 
256 	for (i = 0; i < size; i++) {
257 		if (histo[i] > max)
258 			max = histo[i];
259 		if (histo[i] > 0 && i > maxidx)
260 			maxidx = i;
261 		if (histo[i] > 0 && i < minidx)
262 			minidx = i;
263 	}
264 
265 	if (max < histo_width)
266 		max = histo_width;
267 
268 	for (i = minidx; i <= maxidx; i++) {
269 		(void) printf("\t\t\t%3u: %6llu %s\n",
270 		    i + offset, (u_longlong_t)histo[i],
271 		    &histo_stars[(max - histo[i]) * histo_width / max]);
272 	}
273 }
274 
275 static void
276 dump_zap_stats(objset_t *os, uint64_t object)
277 {
278 	int error;
279 	zap_stats_t zs;
280 
281 	error = zap_get_stats(os, object, &zs);
282 	if (error)
283 		return;
284 
285 	if (zs.zs_ptrtbl_len == 0) {
286 		ASSERT(zs.zs_num_blocks == 1);
287 		(void) printf("\tmicrozap: %llu bytes, %llu entries\n",
288 		    (u_longlong_t)zs.zs_blocksize,
289 		    (u_longlong_t)zs.zs_num_entries);
290 		return;
291 	}
292 
293 	(void) printf("\tFat ZAP stats:\n");
294 
295 	(void) printf("\t\tPointer table:\n");
296 	(void) printf("\t\t\t%llu elements\n",
297 	    (u_longlong_t)zs.zs_ptrtbl_len);
298 	(void) printf("\t\t\tzt_blk: %llu\n",
299 	    (u_longlong_t)zs.zs_ptrtbl_zt_blk);
300 	(void) printf("\t\t\tzt_numblks: %llu\n",
301 	    (u_longlong_t)zs.zs_ptrtbl_zt_numblks);
302 	(void) printf("\t\t\tzt_shift: %llu\n",
303 	    (u_longlong_t)zs.zs_ptrtbl_zt_shift);
304 	(void) printf("\t\t\tzt_blks_copied: %llu\n",
305 	    (u_longlong_t)zs.zs_ptrtbl_blks_copied);
306 	(void) printf("\t\t\tzt_nextblk: %llu\n",
307 	    (u_longlong_t)zs.zs_ptrtbl_nextblk);
308 
309 	(void) printf("\t\tZAP entries: %llu\n",
310 	    (u_longlong_t)zs.zs_num_entries);
311 	(void) printf("\t\tLeaf blocks: %llu\n",
312 	    (u_longlong_t)zs.zs_num_leafs);
313 	(void) printf("\t\tTotal blocks: %llu\n",
314 	    (u_longlong_t)zs.zs_num_blocks);
315 	(void) printf("\t\tzap_block_type: 0x%llx\n",
316 	    (u_longlong_t)zs.zs_block_type);
317 	(void) printf("\t\tzap_magic: 0x%llx\n",
318 	    (u_longlong_t)zs.zs_magic);
319 	(void) printf("\t\tzap_salt: 0x%llx\n",
320 	    (u_longlong_t)zs.zs_salt);
321 
322 	(void) printf("\t\tLeafs with 2^n pointers:\n");
323 	dump_histogram(zs.zs_leafs_with_2n_pointers, ZAP_HISTOGRAM_SIZE, 0);
324 
325 	(void) printf("\t\tBlocks with n*5 entries:\n");
326 	dump_histogram(zs.zs_blocks_with_n5_entries, ZAP_HISTOGRAM_SIZE, 0);
327 
328 	(void) printf("\t\tBlocks n/10 full:\n");
329 	dump_histogram(zs.zs_blocks_n_tenths_full, ZAP_HISTOGRAM_SIZE, 0);
330 
331 	(void) printf("\t\tEntries with n chunks:\n");
332 	dump_histogram(zs.zs_entries_using_n_chunks, ZAP_HISTOGRAM_SIZE, 0);
333 
334 	(void) printf("\t\tBuckets with n entries:\n");
335 	dump_histogram(zs.zs_buckets_with_n_entries, ZAP_HISTOGRAM_SIZE, 0);
336 }
337 
338 /*ARGSUSED*/
339 static void
340 dump_none(objset_t *os, uint64_t object, void *data, size_t size)
341 {
342 }
343 
344 /*ARGSUSED*/
345 static void
346 dump_unknown(objset_t *os, uint64_t object, void *data, size_t size)
347 {
348 	(void) printf("\tUNKNOWN OBJECT TYPE\n");
349 }
350 
351 /*ARGSUSED*/
352 void
353 dump_uint8(objset_t *os, uint64_t object, void *data, size_t size)
354 {
355 }
356 
357 /*ARGSUSED*/
358 static void
359 dump_uint64(objset_t *os, uint64_t object, void *data, size_t size)
360 {
361 }
362 
363 /*ARGSUSED*/
364 static void
365 dump_zap(objset_t *os, uint64_t object, void *data, size_t size)
366 {
367 	zap_cursor_t zc;
368 	zap_attribute_t attr;
369 	void *prop;
370 	int i;
371 
372 	dump_zap_stats(os, object);
373 	(void) printf("\n");
374 
375 	for (zap_cursor_init(&zc, os, object);
376 	    zap_cursor_retrieve(&zc, &attr) == 0;
377 	    zap_cursor_advance(&zc)) {
378 		(void) printf("\t\t%s = ", attr.za_name);
379 		if (attr.za_num_integers == 0) {
380 			(void) printf("\n");
381 			continue;
382 		}
383 		prop = umem_zalloc(attr.za_num_integers *
384 		    attr.za_integer_length, UMEM_NOFAIL);
385 		(void) zap_lookup(os, object, attr.za_name,
386 		    attr.za_integer_length, attr.za_num_integers, prop);
387 		if (attr.za_integer_length == 1) {
388 			(void) printf("%s", (char *)prop);
389 		} else {
390 			for (i = 0; i < attr.za_num_integers; i++) {
391 				switch (attr.za_integer_length) {
392 				case 2:
393 					(void) printf("%u ",
394 					    ((uint16_t *)prop)[i]);
395 					break;
396 				case 4:
397 					(void) printf("%u ",
398 					    ((uint32_t *)prop)[i]);
399 					break;
400 				case 8:
401 					(void) printf("%lld ",
402 					    (u_longlong_t)((int64_t *)prop)[i]);
403 					break;
404 				}
405 			}
406 		}
407 		(void) printf("\n");
408 		umem_free(prop, attr.za_num_integers * attr.za_integer_length);
409 	}
410 	zap_cursor_fini(&zc);
411 }
412 
413 /*ARGSUSED*/
414 static void
415 dump_ddt_zap(objset_t *os, uint64_t object, void *data, size_t size)
416 {
417 	dump_zap_stats(os, object);
418 	/* contents are printed elsewhere, properly decoded */
419 }
420 
421 /*ARGSUSED*/
422 static void
423 dump_sa_attrs(objset_t *os, uint64_t object, void *data, size_t size)
424 {
425 	zap_cursor_t zc;
426 	zap_attribute_t attr;
427 
428 	dump_zap_stats(os, object);
429 	(void) printf("\n");
430 
431 	for (zap_cursor_init(&zc, os, object);
432 	    zap_cursor_retrieve(&zc, &attr) == 0;
433 	    zap_cursor_advance(&zc)) {
434 		(void) printf("\t\t%s = ", attr.za_name);
435 		if (attr.za_num_integers == 0) {
436 			(void) printf("\n");
437 			continue;
438 		}
439 		(void) printf(" %llx : [%d:%d:%d]\n",
440 		    (u_longlong_t)attr.za_first_integer,
441 		    (int)ATTR_LENGTH(attr.za_first_integer),
442 		    (int)ATTR_BSWAP(attr.za_first_integer),
443 		    (int)ATTR_NUM(attr.za_first_integer));
444 	}
445 	zap_cursor_fini(&zc);
446 }
447 
448 /*ARGSUSED*/
449 static void
450 dump_sa_layouts(objset_t *os, uint64_t object, void *data, size_t size)
451 {
452 	zap_cursor_t zc;
453 	zap_attribute_t attr;
454 	uint16_t *layout_attrs;
455 	int i;
456 
457 	dump_zap_stats(os, object);
458 	(void) printf("\n");
459 
460 	for (zap_cursor_init(&zc, os, object);
461 	    zap_cursor_retrieve(&zc, &attr) == 0;
462 	    zap_cursor_advance(&zc)) {
463 		(void) printf("\t\t%s = [", attr.za_name);
464 		if (attr.za_num_integers == 0) {
465 			(void) printf("\n");
466 			continue;
467 		}
468 
469 		VERIFY(attr.za_integer_length == 2);
470 		layout_attrs = umem_zalloc(attr.za_num_integers *
471 		    attr.za_integer_length, UMEM_NOFAIL);
472 
473 		VERIFY(zap_lookup(os, object, attr.za_name,
474 		    attr.za_integer_length,
475 		    attr.za_num_integers, layout_attrs) == 0);
476 
477 		for (i = 0; i != attr.za_num_integers; i++)
478 			(void) printf(" %d ", (int)layout_attrs[i]);
479 		(void) printf("]\n");
480 		umem_free(layout_attrs,
481 		    attr.za_num_integers * attr.za_integer_length);
482 	}
483 	zap_cursor_fini(&zc);
484 }
485 
486 /*ARGSUSED*/
487 static void
488 dump_zpldir(objset_t *os, uint64_t object, void *data, size_t size)
489 {
490 	zap_cursor_t zc;
491 	zap_attribute_t attr;
492 	const char *typenames[] = {
493 		/* 0 */ "not specified",
494 		/* 1 */ "FIFO",
495 		/* 2 */ "Character Device",
496 		/* 3 */ "3 (invalid)",
497 		/* 4 */ "Directory",
498 		/* 5 */ "5 (invalid)",
499 		/* 6 */ "Block Device",
500 		/* 7 */ "7 (invalid)",
501 		/* 8 */ "Regular File",
502 		/* 9 */ "9 (invalid)",
503 		/* 10 */ "Symbolic Link",
504 		/* 11 */ "11 (invalid)",
505 		/* 12 */ "Socket",
506 		/* 13 */ "Door",
507 		/* 14 */ "Event Port",
508 		/* 15 */ "15 (invalid)",
509 	};
510 
511 	dump_zap_stats(os, object);
512 	(void) printf("\n");
513 
514 	for (zap_cursor_init(&zc, os, object);
515 	    zap_cursor_retrieve(&zc, &attr) == 0;
516 	    zap_cursor_advance(&zc)) {
517 		(void) printf("\t\t%s = %lld (type: %s)\n",
518 		    attr.za_name, ZFS_DIRENT_OBJ(attr.za_first_integer),
519 		    typenames[ZFS_DIRENT_TYPE(attr.za_first_integer)]);
520 	}
521 	zap_cursor_fini(&zc);
522 }
523 
524 int
525 get_dtl_refcount(vdev_t *vd)
526 {
527 	int refcount = 0;
528 
529 	if (vd->vdev_ops->vdev_op_leaf) {
530 		space_map_t *sm = vd->vdev_dtl_sm;
531 
532 		if (sm != NULL &&
533 		    sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
534 			return (1);
535 		return (0);
536 	}
537 
538 	for (int c = 0; c < vd->vdev_children; c++)
539 		refcount += get_dtl_refcount(vd->vdev_child[c]);
540 	return (refcount);
541 }
542 
543 int
544 get_metaslab_refcount(vdev_t *vd)
545 {
546 	int refcount = 0;
547 
548 	if (vd->vdev_top == vd) {
549 		for (int m = 0; m < vd->vdev_ms_count; m++) {
550 			space_map_t *sm = vd->vdev_ms[m]->ms_sm;
551 
552 			if (sm != NULL &&
553 			    sm->sm_dbuf->db_size == sizeof (space_map_phys_t))
554 				refcount++;
555 		}
556 	}
557 	for (int c = 0; c < vd->vdev_children; c++)
558 		refcount += get_metaslab_refcount(vd->vdev_child[c]);
559 
560 	return (refcount);
561 }
562 
563 static int
564 verify_spacemap_refcounts(spa_t *spa)
565 {
566 	uint64_t expected_refcount = 0;
567 	uint64_t actual_refcount;
568 
569 	(void) feature_get_refcount(spa,
570 	    &spa_feature_table[SPA_FEATURE_SPACEMAP_HISTOGRAM],
571 	    &expected_refcount);
572 	actual_refcount = get_dtl_refcount(spa->spa_root_vdev);
573 	actual_refcount += get_metaslab_refcount(spa->spa_root_vdev);
574 
575 	if (expected_refcount != actual_refcount) {
576 		(void) printf("space map refcount mismatch: expected %lld != "
577 		    "actual %lld\n",
578 		    (longlong_t)expected_refcount,
579 		    (longlong_t)actual_refcount);
580 		return (2);
581 	}
582 	return (0);
583 }
584 
585 static void
586 dump_spacemap(objset_t *os, space_map_t *sm)
587 {
588 	uint64_t alloc, offset, entry;
589 	char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID",
590 			    "INVALID", "INVALID", "INVALID", "INVALID" };
591 
592 	if (sm == NULL)
593 		return;
594 
595 	/*
596 	 * Print out the freelist entries in both encoded and decoded form.
597 	 */
598 	alloc = 0;
599 	for (offset = 0; offset < space_map_length(sm);
600 	    offset += sizeof (entry)) {
601 		uint8_t mapshift = sm->sm_shift;
602 
603 		VERIFY0(dmu_read(os, space_map_object(sm), offset,
604 		    sizeof (entry), &entry, DMU_READ_PREFETCH));
605 		if (SM_DEBUG_DECODE(entry)) {
606 
607 			(void) printf("\t    [%6llu] %s: txg %llu, pass %llu\n",
608 			    (u_longlong_t)(offset / sizeof (entry)),
609 			    ddata[SM_DEBUG_ACTION_DECODE(entry)],
610 			    (u_longlong_t)SM_DEBUG_TXG_DECODE(entry),
611 			    (u_longlong_t)SM_DEBUG_SYNCPASS_DECODE(entry));
612 		} else {
613 			(void) printf("\t    [%6llu]    %c  range:"
614 			    " %010llx-%010llx  size: %06llx\n",
615 			    (u_longlong_t)(offset / sizeof (entry)),
616 			    SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F',
617 			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
618 			    mapshift) + sm->sm_start),
619 			    (u_longlong_t)((SM_OFFSET_DECODE(entry) <<
620 			    mapshift) + sm->sm_start +
621 			    (SM_RUN_DECODE(entry) << mapshift)),
622 			    (u_longlong_t)(SM_RUN_DECODE(entry) << mapshift));
623 			if (SM_TYPE_DECODE(entry) == SM_ALLOC)
624 				alloc += SM_RUN_DECODE(entry) << mapshift;
625 			else
626 				alloc -= SM_RUN_DECODE(entry) << mapshift;
627 		}
628 	}
629 	if (alloc != space_map_allocated(sm)) {
630 		(void) printf("space_map_object alloc (%llu) INCONSISTENT "
631 		    "with space map summary (%llu)\n",
632 		    (u_longlong_t)space_map_allocated(sm), (u_longlong_t)alloc);
633 	}
634 }
635 
636 static void
637 dump_metaslab_stats(metaslab_t *msp)
638 {
639 	char maxbuf[32];
640 	range_tree_t *rt = msp->ms_tree;
641 	avl_tree_t *t = &msp->ms_size_tree;
642 	int free_pct = range_tree_space(rt) * 100 / msp->ms_size;
643 
644 	zdb_nicenum(metaslab_block_maxsize(msp), maxbuf);
645 
646 	(void) printf("\t %25s %10lu   %7s  %6s   %4s %4d%%\n",
647 	    "segments", avl_numnodes(t), "maxsize", maxbuf,
648 	    "freepct", free_pct);
649 	(void) printf("\tIn-memory histogram:\n");
650 	dump_histogram(rt->rt_histogram, RANGE_TREE_HISTOGRAM_SIZE, 0);
651 }
652 
653 static void
654 dump_metaslab(metaslab_t *msp)
655 {
656 	vdev_t *vd = msp->ms_group->mg_vd;
657 	spa_t *spa = vd->vdev_spa;
658 	space_map_t *sm = msp->ms_sm;
659 	char freebuf[32];
660 
661 	zdb_nicenum(msp->ms_size - space_map_allocated(sm), freebuf);
662 
663 	(void) printf(
664 	    "\tmetaslab %6llu   offset %12llx   spacemap %6llu   free    %5s\n",
665 	    (u_longlong_t)msp->ms_id, (u_longlong_t)msp->ms_start,
666 	    (u_longlong_t)space_map_object(sm), freebuf);
667 
668 	if (dump_opt['m'] > 2 && !dump_opt['L']) {
669 		mutex_enter(&msp->ms_lock);
670 		metaslab_load_wait(msp);
671 		if (!msp->ms_loaded) {
672 			VERIFY0(metaslab_load(msp));
673 			range_tree_stat_verify(msp->ms_tree);
674 		}
675 		dump_metaslab_stats(msp);
676 		metaslab_unload(msp);
677 		mutex_exit(&msp->ms_lock);
678 	}
679 
680 	if (dump_opt['m'] > 1 && sm != NULL &&
681 	    spa_feature_is_active(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM)) {
682 		/*
683 		 * The space map histogram represents free space in chunks
684 		 * of sm_shift (i.e. bucket 0 refers to 2^sm_shift).
685 		 */
686 		(void) printf("\tOn-disk histogram:\n");
687 		dump_histogram(sm->sm_phys->smp_histogram,
688 		    SPACE_MAP_HISTOGRAM_SIZE(sm), sm->sm_shift);
689 	}
690 
691 	if (dump_opt['d'] > 5 || dump_opt['m'] > 3) {
692 		ASSERT(msp->ms_size == (1ULL << vd->vdev_ms_shift));
693 
694 		mutex_enter(&msp->ms_lock);
695 		dump_spacemap(spa->spa_meta_objset, msp->ms_sm);
696 		mutex_exit(&msp->ms_lock);
697 	}
698 }
699 
700 static void
701 print_vdev_metaslab_header(vdev_t *vd)
702 {
703 	(void) printf("\tvdev %10llu\n\t%-10s%5llu   %-19s   %-15s   %-10s\n",
704 	    (u_longlong_t)vd->vdev_id,
705 	    "metaslabs", (u_longlong_t)vd->vdev_ms_count,
706 	    "offset", "spacemap", "free");
707 	(void) printf("\t%15s   %19s   %15s   %10s\n",
708 	    "---------------", "-------------------",
709 	    "---------------", "-------------");
710 }
711 
712 static void
713 dump_metaslabs(spa_t *spa)
714 {
715 	vdev_t *vd, *rvd = spa->spa_root_vdev;
716 	uint64_t m, c = 0, children = rvd->vdev_children;
717 
718 	(void) printf("\nMetaslabs:\n");
719 
720 	if (!dump_opt['d'] && zopt_objects > 0) {
721 		c = zopt_object[0];
722 
723 		if (c >= children)
724 			(void) fatal("bad vdev id: %llu", (u_longlong_t)c);
725 
726 		if (zopt_objects > 1) {
727 			vd = rvd->vdev_child[c];
728 			print_vdev_metaslab_header(vd);
729 
730 			for (m = 1; m < zopt_objects; m++) {
731 				if (zopt_object[m] < vd->vdev_ms_count)
732 					dump_metaslab(
733 					    vd->vdev_ms[zopt_object[m]]);
734 				else
735 					(void) fprintf(stderr, "bad metaslab "
736 					    "number %llu\n",
737 					    (u_longlong_t)zopt_object[m]);
738 			}
739 			(void) printf("\n");
740 			return;
741 		}
742 		children = c + 1;
743 	}
744 	for (; c < children; c++) {
745 		vd = rvd->vdev_child[c];
746 		print_vdev_metaslab_header(vd);
747 
748 		for (m = 0; m < vd->vdev_ms_count; m++)
749 			dump_metaslab(vd->vdev_ms[m]);
750 		(void) printf("\n");
751 	}
752 }
753 
754 static void
755 dump_dde(const ddt_t *ddt, const ddt_entry_t *dde, uint64_t index)
756 {
757 	const ddt_phys_t *ddp = dde->dde_phys;
758 	const ddt_key_t *ddk = &dde->dde_key;
759 	char *types[4] = { "ditto", "single", "double", "triple" };
760 	char blkbuf[BP_SPRINTF_LEN];
761 	blkptr_t blk;
762 
763 	for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
764 		if (ddp->ddp_phys_birth == 0)
765 			continue;
766 		ddt_bp_create(ddt->ddt_checksum, ddk, ddp, &blk);
767 		sprintf_blkptr(blkbuf, &blk);
768 		(void) printf("index %llx refcnt %llu %s %s\n",
769 		    (u_longlong_t)index, (u_longlong_t)ddp->ddp_refcnt,
770 		    types[p], blkbuf);
771 	}
772 }
773 
774 static void
775 dump_dedup_ratio(const ddt_stat_t *dds)
776 {
777 	double rL, rP, rD, D, dedup, compress, copies;
778 
779 	if (dds->dds_blocks == 0)
780 		return;
781 
782 	rL = (double)dds->dds_ref_lsize;
783 	rP = (double)dds->dds_ref_psize;
784 	rD = (double)dds->dds_ref_dsize;
785 	D = (double)dds->dds_dsize;
786 
787 	dedup = rD / D;
788 	compress = rL / rP;
789 	copies = rD / rP;
790 
791 	(void) printf("dedup = %.2f, compress = %.2f, copies = %.2f, "
792 	    "dedup * compress / copies = %.2f\n\n",
793 	    dedup, compress, copies, dedup * compress / copies);
794 }
795 
796 static void
797 dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
798 {
799 	char name[DDT_NAMELEN];
800 	ddt_entry_t dde;
801 	uint64_t walk = 0;
802 	dmu_object_info_t doi;
803 	uint64_t count, dspace, mspace;
804 	int error;
805 
806 	error = ddt_object_info(ddt, type, class, &doi);
807 
808 	if (error == ENOENT)
809 		return;
810 	ASSERT(error == 0);
811 
812 	if ((count = ddt_object_count(ddt, type, class)) == 0)
813 		return;
814 
815 	dspace = doi.doi_physical_blocks_512 << 9;
816 	mspace = doi.doi_fill_count * doi.doi_data_block_size;
817 
818 	ddt_object_name(ddt, type, class, name);
819 
820 	(void) printf("%s: %llu entries, size %llu on disk, %llu in core\n",
821 	    name,
822 	    (u_longlong_t)count,
823 	    (u_longlong_t)(dspace / count),
824 	    (u_longlong_t)(mspace / count));
825 
826 	if (dump_opt['D'] < 3)
827 		return;
828 
829 	zpool_dump_ddt(NULL, &ddt->ddt_histogram[type][class]);
830 
831 	if (dump_opt['D'] < 4)
832 		return;
833 
834 	if (dump_opt['D'] < 5 && class == DDT_CLASS_UNIQUE)
835 		return;
836 
837 	(void) printf("%s contents:\n\n", name);
838 
839 	while ((error = ddt_object_walk(ddt, type, class, &walk, &dde)) == 0)
840 		dump_dde(ddt, &dde, walk);
841 
842 	ASSERT(error == ENOENT);
843 
844 	(void) printf("\n");
845 }
846 
847 static void
848 dump_all_ddts(spa_t *spa)
849 {
850 	ddt_histogram_t ddh_total = { 0 };
851 	ddt_stat_t dds_total = { 0 };
852 
853 	for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
854 		ddt_t *ddt = spa->spa_ddt[c];
855 		for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
856 			for (enum ddt_class class = 0; class < DDT_CLASSES;
857 			    class++) {
858 				dump_ddt(ddt, type, class);
859 			}
860 		}
861 	}
862 
863 	ddt_get_dedup_stats(spa, &dds_total);
864 
865 	if (dds_total.dds_blocks == 0) {
866 		(void) printf("All DDTs are empty\n");
867 		return;
868 	}
869 
870 	(void) printf("\n");
871 
872 	if (dump_opt['D'] > 1) {
873 		(void) printf("DDT histogram (aggregated over all DDTs):\n");
874 		ddt_get_dedup_histogram(spa, &ddh_total);
875 		zpool_dump_ddt(&dds_total, &ddh_total);
876 	}
877 
878 	dump_dedup_ratio(&dds_total);
879 }
880 
881 static void
882 dump_dtl_seg(void *arg, uint64_t start, uint64_t size)
883 {
884 	char *prefix = arg;
885 
886 	(void) printf("%s [%llu,%llu) length %llu\n",
887 	    prefix,
888 	    (u_longlong_t)start,
889 	    (u_longlong_t)(start + size),
890 	    (u_longlong_t)(size));
891 }
892 
893 static void
894 dump_dtl(vdev_t *vd, int indent)
895 {
896 	spa_t *spa = vd->vdev_spa;
897 	boolean_t required;
898 	char *name[DTL_TYPES] = { "missing", "partial", "scrub", "outage" };
899 	char prefix[256];
900 
901 	spa_vdev_state_enter(spa, SCL_NONE);
902 	required = vdev_dtl_required(vd);
903 	(void) spa_vdev_state_exit(spa, NULL, 0);
904 
905 	if (indent == 0)
906 		(void) printf("\nDirty time logs:\n\n");
907 
908 	(void) printf("\t%*s%s [%s]\n", indent, "",
909 	    vd->vdev_path ? vd->vdev_path :
910 	    vd->vdev_parent ? vd->vdev_ops->vdev_op_type : spa_name(spa),
911 	    required ? "DTL-required" : "DTL-expendable");
912 
913 	for (int t = 0; t < DTL_TYPES; t++) {
914 		range_tree_t *rt = vd->vdev_dtl[t];
915 		if (range_tree_space(rt) == 0)
916 			continue;
917 		(void) snprintf(prefix, sizeof (prefix), "\t%*s%s",
918 		    indent + 2, "", name[t]);
919 		mutex_enter(rt->rt_lock);
920 		range_tree_walk(rt, dump_dtl_seg, prefix);
921 		mutex_exit(rt->rt_lock);
922 		if (dump_opt['d'] > 5 && vd->vdev_children == 0)
923 			dump_spacemap(spa->spa_meta_objset, vd->vdev_dtl_sm);
924 	}
925 
926 	for (int c = 0; c < vd->vdev_children; c++)
927 		dump_dtl(vd->vdev_child[c], indent + 4);
928 }
929 
930 static void
931 dump_history(spa_t *spa)
932 {
933 	nvlist_t **events = NULL;
934 	char buf[SPA_MAXBLOCKSIZE];
935 	uint64_t resid, len, off = 0;
936 	uint_t num = 0;
937 	int error;
938 	time_t tsec;
939 	struct tm t;
940 	char tbuf[30];
941 	char internalstr[MAXPATHLEN];
942 
943 	do {
944 		len = sizeof (buf);
945 
946 		if ((error = spa_history_get(spa, &off, &len, buf)) != 0) {
947 			(void) fprintf(stderr, "Unable to read history: "
948 			    "error %d\n", error);
949 			return;
950 		}
951 
952 		if (zpool_history_unpack(buf, len, &resid, &events, &num) != 0)
953 			break;
954 
955 		off -= resid;
956 	} while (len != 0);
957 
958 	(void) printf("\nHistory:\n");
959 	for (int i = 0; i < num; i++) {
960 		uint64_t time, txg, ievent;
961 		char *cmd, *intstr;
962 		boolean_t printed = B_FALSE;
963 
964 		if (nvlist_lookup_uint64(events[i], ZPOOL_HIST_TIME,
965 		    &time) != 0)
966 			goto next;
967 		if (nvlist_lookup_string(events[i], ZPOOL_HIST_CMD,
968 		    &cmd) != 0) {
969 			if (nvlist_lookup_uint64(events[i],
970 			    ZPOOL_HIST_INT_EVENT, &ievent) != 0)
971 				goto next;
972 			verify(nvlist_lookup_uint64(events[i],
973 			    ZPOOL_HIST_TXG, &txg) == 0);
974 			verify(nvlist_lookup_string(events[i],
975 			    ZPOOL_HIST_INT_STR, &intstr) == 0);
976 			if (ievent >= ZFS_NUM_LEGACY_HISTORY_EVENTS)
977 				goto next;
978 
979 			(void) snprintf(internalstr,
980 			    sizeof (internalstr),
981 			    "[internal %s txg:%lld] %s",
982 			    zfs_history_event_names[ievent], txg,
983 			    intstr);
984 			cmd = internalstr;
985 		}
986 		tsec = time;
987 		(void) localtime_r(&tsec, &t);
988 		(void) strftime(tbuf, sizeof (tbuf), "%F.%T", &t);
989 		(void) printf("%s %s\n", tbuf, cmd);
990 		printed = B_TRUE;
991 
992 next:
993 		if (dump_opt['h'] > 1) {
994 			if (!printed)
995 				(void) printf("unrecognized record:\n");
996 			dump_nvlist(events[i], 2);
997 		}
998 	}
999 }
1000 
1001 /*ARGSUSED*/
1002 static void
1003 dump_dnode(objset_t *os, uint64_t object, void *data, size_t size)
1004 {
1005 }
1006 
1007 static uint64_t
1008 blkid2offset(const dnode_phys_t *dnp, const blkptr_t *bp, const zbookmark_t *zb)
1009 {
1010 	if (dnp == NULL) {
1011 		ASSERT(zb->zb_level < 0);
1012 		if (zb->zb_object == 0)
1013 			return (zb->zb_blkid);
1014 		return (zb->zb_blkid * BP_GET_LSIZE(bp));
1015 	}
1016 
1017 	ASSERT(zb->zb_level >= 0);
1018 
1019 	return ((zb->zb_blkid <<
1020 	    (zb->zb_level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) *
1021 	    dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT);
1022 }
1023 
1024 static void
1025 sprintf_blkptr_compact(char *blkbuf, const blkptr_t *bp)
1026 {
1027 	const dva_t *dva = bp->blk_dva;
1028 	int ndvas = dump_opt['d'] > 5 ? BP_GET_NDVAS(bp) : 1;
1029 
1030 	if (dump_opt['b'] >= 6) {
1031 		sprintf_blkptr(blkbuf, bp);
1032 		return;
1033 	}
1034 
1035 	blkbuf[0] = '\0';
1036 
1037 	for (int i = 0; i < ndvas; i++)
1038 		(void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ",
1039 		    (u_longlong_t)DVA_GET_VDEV(&dva[i]),
1040 		    (u_longlong_t)DVA_GET_OFFSET(&dva[i]),
1041 		    (u_longlong_t)DVA_GET_ASIZE(&dva[i]));
1042 
1043 	(void) sprintf(blkbuf + strlen(blkbuf),
1044 	    "%llxL/%llxP F=%llu B=%llu/%llu",
1045 	    (u_longlong_t)BP_GET_LSIZE(bp),
1046 	    (u_longlong_t)BP_GET_PSIZE(bp),
1047 	    (u_longlong_t)bp->blk_fill,
1048 	    (u_longlong_t)bp->blk_birth,
1049 	    (u_longlong_t)BP_PHYSICAL_BIRTH(bp));
1050 }
1051 
1052 static void
1053 print_indirect(blkptr_t *bp, const zbookmark_t *zb,
1054     const dnode_phys_t *dnp)
1055 {
1056 	char blkbuf[BP_SPRINTF_LEN];
1057 	int l;
1058 
1059 	ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type);
1060 	ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level);
1061 
1062 	(void) printf("%16llx ", (u_longlong_t)blkid2offset(dnp, bp, zb));
1063 
1064 	ASSERT(zb->zb_level >= 0);
1065 
1066 	for (l = dnp->dn_nlevels - 1; l >= -1; l--) {
1067 		if (l == zb->zb_level) {
1068 			(void) printf("L%llx", (u_longlong_t)zb->zb_level);
1069 		} else {
1070 			(void) printf(" ");
1071 		}
1072 	}
1073 
1074 	sprintf_blkptr_compact(blkbuf, bp);
1075 	(void) printf("%s\n", blkbuf);
1076 }
1077 
1078 static int
1079 visit_indirect(spa_t *spa, const dnode_phys_t *dnp,
1080     blkptr_t *bp, const zbookmark_t *zb)
1081 {
1082 	int err = 0;
1083 
1084 	if (bp->blk_birth == 0)
1085 		return (0);
1086 
1087 	print_indirect(bp, zb, dnp);
1088 
1089 	if (BP_GET_LEVEL(bp) > 0) {
1090 		uint32_t flags = ARC_WAIT;
1091 		int i;
1092 		blkptr_t *cbp;
1093 		int epb = BP_GET_LSIZE(bp) >> SPA_BLKPTRSHIFT;
1094 		arc_buf_t *buf;
1095 		uint64_t fill = 0;
1096 
1097 		err = arc_read(NULL, spa, bp, arc_getbuf_func, &buf,
1098 		    ZIO_PRIORITY_ASYNC_READ, ZIO_FLAG_CANFAIL, &flags, zb);
1099 		if (err)
1100 			return (err);
1101 		ASSERT(buf->b_data);
1102 
1103 		/* recursively visit blocks below this */
1104 		cbp = buf->b_data;
1105 		for (i = 0; i < epb; i++, cbp++) {
1106 			zbookmark_t czb;
1107 
1108 			SET_BOOKMARK(&czb, zb->zb_objset, zb->zb_object,
1109 			    zb->zb_level - 1,
1110 			    zb->zb_blkid * epb + i);
1111 			err = visit_indirect(spa, dnp, cbp, &czb);
1112 			if (err)
1113 				break;
1114 			fill += cbp->blk_fill;
1115 		}
1116 		if (!err)
1117 			ASSERT3U(fill, ==, bp->blk_fill);
1118 		(void) arc_buf_remove_ref(buf, &buf);
1119 	}
1120 
1121 	return (err);
1122 }
1123 
1124 /*ARGSUSED*/
1125 static void
1126 dump_indirect(dnode_t *dn)
1127 {
1128 	dnode_phys_t *dnp = dn->dn_phys;
1129 	int j;
1130 	zbookmark_t czb;
1131 
1132 	(void) printf("Indirect blocks:\n");
1133 
1134 	SET_BOOKMARK(&czb, dmu_objset_id(dn->dn_objset),
1135 	    dn->dn_object, dnp->dn_nlevels - 1, 0);
1136 	for (j = 0; j < dnp->dn_nblkptr; j++) {
1137 		czb.zb_blkid = j;
1138 		(void) visit_indirect(dmu_objset_spa(dn->dn_objset), dnp,
1139 		    &dnp->dn_blkptr[j], &czb);
1140 	}
1141 
1142 	(void) printf("\n");
1143 }
1144 
1145 /*ARGSUSED*/
1146 static void
1147 dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size)
1148 {
1149 	dsl_dir_phys_t *dd = data;
1150 	time_t crtime;
1151 	char nice[32];
1152 
1153 	if (dd == NULL)
1154 		return;
1155 
1156 	ASSERT3U(size, >=, sizeof (dsl_dir_phys_t));
1157 
1158 	crtime = dd->dd_creation_time;
1159 	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
1160 	(void) printf("\t\thead_dataset_obj = %llu\n",
1161 	    (u_longlong_t)dd->dd_head_dataset_obj);
1162 	(void) printf("\t\tparent_dir_obj = %llu\n",
1163 	    (u_longlong_t)dd->dd_parent_obj);
1164 	(void) printf("\t\torigin_obj = %llu\n",
1165 	    (u_longlong_t)dd->dd_origin_obj);
1166 	(void) printf("\t\tchild_dir_zapobj = %llu\n",
1167 	    (u_longlong_t)dd->dd_child_dir_zapobj);
1168 	zdb_nicenum(dd->dd_used_bytes, nice);
1169 	(void) printf("\t\tused_bytes = %s\n", nice);
1170 	zdb_nicenum(dd->dd_compressed_bytes, nice);
1171 	(void) printf("\t\tcompressed_bytes = %s\n", nice);
1172 	zdb_nicenum(dd->dd_uncompressed_bytes, nice);
1173 	(void) printf("\t\tuncompressed_bytes = %s\n", nice);
1174 	zdb_nicenum(dd->dd_quota, nice);
1175 	(void) printf("\t\tquota = %s\n", nice);
1176 	zdb_nicenum(dd->dd_reserved, nice);
1177 	(void) printf("\t\treserved = %s\n", nice);
1178 	(void) printf("\t\tprops_zapobj = %llu\n",
1179 	    (u_longlong_t)dd->dd_props_zapobj);
1180 	(void) printf("\t\tdeleg_zapobj = %llu\n",
1181 	    (u_longlong_t)dd->dd_deleg_zapobj);
1182 	(void) printf("\t\tflags = %llx\n",
1183 	    (u_longlong_t)dd->dd_flags);
1184 
1185 #define	DO(which) \
1186 	zdb_nicenum(dd->dd_used_breakdown[DD_USED_ ## which], nice); \
1187 	(void) printf("\t\tused_breakdown[" #which "] = %s\n", nice)
1188 	DO(HEAD);
1189 	DO(SNAP);
1190 	DO(CHILD);
1191 	DO(CHILD_RSRV);
1192 	DO(REFRSRV);
1193 #undef DO
1194 }
1195 
1196 /*ARGSUSED*/
1197 static void
1198 dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size)
1199 {
1200 	dsl_dataset_phys_t *ds = data;
1201 	time_t crtime;
1202 	char used[32], compressed[32], uncompressed[32], unique[32];
1203 	char blkbuf[BP_SPRINTF_LEN];
1204 
1205 	if (ds == NULL)
1206 		return;
1207 
1208 	ASSERT(size == sizeof (*ds));
1209 	crtime = ds->ds_creation_time;
1210 	zdb_nicenum(ds->ds_referenced_bytes, used);
1211 	zdb_nicenum(ds->ds_compressed_bytes, compressed);
1212 	zdb_nicenum(ds->ds_uncompressed_bytes, uncompressed);
1213 	zdb_nicenum(ds->ds_unique_bytes, unique);
1214 	sprintf_blkptr(blkbuf, &ds->ds_bp);
1215 
1216 	(void) printf("\t\tdir_obj = %llu\n",
1217 	    (u_longlong_t)ds->ds_dir_obj);
1218 	(void) printf("\t\tprev_snap_obj = %llu\n",
1219 	    (u_longlong_t)ds->ds_prev_snap_obj);
1220 	(void) printf("\t\tprev_snap_txg = %llu\n",
1221 	    (u_longlong_t)ds->ds_prev_snap_txg);
1222 	(void) printf("\t\tnext_snap_obj = %llu\n",
1223 	    (u_longlong_t)ds->ds_next_snap_obj);
1224 	(void) printf("\t\tsnapnames_zapobj = %llu\n",
1225 	    (u_longlong_t)ds->ds_snapnames_zapobj);
1226 	(void) printf("\t\tnum_children = %llu\n",
1227 	    (u_longlong_t)ds->ds_num_children);
1228 	(void) printf("\t\tuserrefs_obj = %llu\n",
1229 	    (u_longlong_t)ds->ds_userrefs_obj);
1230 	(void) printf("\t\tcreation_time = %s", ctime(&crtime));
1231 	(void) printf("\t\tcreation_txg = %llu\n",
1232 	    (u_longlong_t)ds->ds_creation_txg);
1233 	(void) printf("\t\tdeadlist_obj = %llu\n",
1234 	    (u_longlong_t)ds->ds_deadlist_obj);
1235 	(void) printf("\t\tused_bytes = %s\n", used);
1236 	(void) printf("\t\tcompressed_bytes = %s\n", compressed);
1237 	(void) printf("\t\tuncompressed_bytes = %s\n", uncompressed);
1238 	(void) printf("\t\tunique = %s\n", unique);
1239 	(void) printf("\t\tfsid_guid = %llu\n",
1240 	    (u_longlong_t)ds->ds_fsid_guid);
1241 	(void) printf("\t\tguid = %llu\n",
1242 	    (u_longlong_t)ds->ds_guid);
1243 	(void) printf("\t\tflags = %llx\n",
1244 	    (u_longlong_t)ds->ds_flags);
1245 	(void) printf("\t\tnext_clones_obj = %llu\n",
1246 	    (u_longlong_t)ds->ds_next_clones_obj);
1247 	(void) printf("\t\tprops_obj = %llu\n",
1248 	    (u_longlong_t)ds->ds_props_obj);
1249 	(void) printf("\t\tbp = %s\n", blkbuf);
1250 }
1251 
1252 /* ARGSUSED */
1253 static int
1254 dump_bptree_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1255 {
1256 	char blkbuf[BP_SPRINTF_LEN];
1257 
1258 	if (bp->blk_birth != 0) {
1259 		sprintf_blkptr(blkbuf, bp);
1260 		(void) printf("\t%s\n", blkbuf);
1261 	}
1262 	return (0);
1263 }
1264 
1265 static void
1266 dump_bptree(objset_t *os, uint64_t obj, char *name)
1267 {
1268 	char bytes[32];
1269 	bptree_phys_t *bt;
1270 	dmu_buf_t *db;
1271 
1272 	if (dump_opt['d'] < 3)
1273 		return;
1274 
1275 	VERIFY3U(0, ==, dmu_bonus_hold(os, obj, FTAG, &db));
1276 	bt = db->db_data;
1277 	zdb_nicenum(bt->bt_bytes, bytes);
1278 	(void) printf("\n    %s: %llu datasets, %s\n",
1279 	    name, (unsigned long long)(bt->bt_end - bt->bt_begin), bytes);
1280 	dmu_buf_rele(db, FTAG);
1281 
1282 	if (dump_opt['d'] < 5)
1283 		return;
1284 
1285 	(void) printf("\n");
1286 
1287 	(void) bptree_iterate(os, obj, B_FALSE, dump_bptree_cb, NULL, NULL);
1288 }
1289 
1290 /* ARGSUSED */
1291 static int
1292 dump_bpobj_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
1293 {
1294 	char blkbuf[BP_SPRINTF_LEN];
1295 
1296 	ASSERT(bp->blk_birth != 0);
1297 	sprintf_blkptr_compact(blkbuf, bp);
1298 	(void) printf("\t%s\n", blkbuf);
1299 	return (0);
1300 }
1301 
1302 static void
1303 dump_bpobj(bpobj_t *bpo, char *name, int indent)
1304 {
1305 	char bytes[32];
1306 	char comp[32];
1307 	char uncomp[32];
1308 
1309 	if (dump_opt['d'] < 3)
1310 		return;
1311 
1312 	zdb_nicenum(bpo->bpo_phys->bpo_bytes, bytes);
1313 	if (bpo->bpo_havesubobj && bpo->bpo_phys->bpo_subobjs != 0) {
1314 		zdb_nicenum(bpo->bpo_phys->bpo_comp, comp);
1315 		zdb_nicenum(bpo->bpo_phys->bpo_uncomp, uncomp);
1316 		(void) printf("    %*s: object %llu, %llu local blkptrs, "
1317 		    "%llu subobjs, %s (%s/%s comp)\n",
1318 		    indent * 8, name,
1319 		    (u_longlong_t)bpo->bpo_object,
1320 		    (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1321 		    (u_longlong_t)bpo->bpo_phys->bpo_num_subobjs,
1322 		    bytes, comp, uncomp);
1323 
1324 		for (uint64_t i = 0; i < bpo->bpo_phys->bpo_num_subobjs; i++) {
1325 			uint64_t subobj;
1326 			bpobj_t subbpo;
1327 			int error;
1328 			VERIFY0(dmu_read(bpo->bpo_os,
1329 			    bpo->bpo_phys->bpo_subobjs,
1330 			    i * sizeof (subobj), sizeof (subobj), &subobj, 0));
1331 			error = bpobj_open(&subbpo, bpo->bpo_os, subobj);
1332 			if (error != 0) {
1333 				(void) printf("ERROR %u while trying to open "
1334 				    "subobj id %llu\n",
1335 				    error, (u_longlong_t)subobj);
1336 				continue;
1337 			}
1338 			dump_bpobj(&subbpo, "subobj", indent + 1);
1339 			bpobj_close(&subbpo);
1340 		}
1341 	} else {
1342 		(void) printf("    %*s: object %llu, %llu blkptrs, %s\n",
1343 		    indent * 8, name,
1344 		    (u_longlong_t)bpo->bpo_object,
1345 		    (u_longlong_t)bpo->bpo_phys->bpo_num_blkptrs,
1346 		    bytes);
1347 	}
1348 
1349 	if (dump_opt['d'] < 5)
1350 		return;
1351 
1352 
1353 	if (indent == 0) {
1354 		(void) bpobj_iterate_nofree(bpo, dump_bpobj_cb, NULL, NULL);
1355 		(void) printf("\n");
1356 	}
1357 }
1358 
1359 static void
1360 dump_deadlist(dsl_deadlist_t *dl)
1361 {
1362 	dsl_deadlist_entry_t *dle;
1363 	uint64_t unused;
1364 	char bytes[32];
1365 	char comp[32];
1366 	char uncomp[32];
1367 
1368 	if (dump_opt['d'] < 3)
1369 		return;
1370 
1371 	zdb_nicenum(dl->dl_phys->dl_used, bytes);
1372 	zdb_nicenum(dl->dl_phys->dl_comp, comp);
1373 	zdb_nicenum(dl->dl_phys->dl_uncomp, uncomp);
1374 	(void) printf("\n    Deadlist: %s (%s/%s comp)\n",
1375 	    bytes, comp, uncomp);
1376 
1377 	if (dump_opt['d'] < 4)
1378 		return;
1379 
1380 	(void) printf("\n");
1381 
1382 	/* force the tree to be loaded */
1383 	dsl_deadlist_space_range(dl, 0, UINT64_MAX, &unused, &unused, &unused);
1384 
1385 	for (dle = avl_first(&dl->dl_tree); dle;
1386 	    dle = AVL_NEXT(&dl->dl_tree, dle)) {
1387 		if (dump_opt['d'] >= 5) {
1388 			char buf[128];
1389 			(void) snprintf(buf, sizeof (buf), "mintxg %llu -> ",
1390 			    (longlong_t)dle->dle_mintxg,
1391 			    (longlong_t)dle->dle_bpobj.bpo_object);
1392 
1393 			dump_bpobj(&dle->dle_bpobj, buf, 0);
1394 		} else {
1395 			(void) printf("mintxg %llu -> obj %llu\n",
1396 			    (longlong_t)dle->dle_mintxg,
1397 			    (longlong_t)dle->dle_bpobj.bpo_object);
1398 
1399 		}
1400 	}
1401 }
1402 
1403 static avl_tree_t idx_tree;
1404 static avl_tree_t domain_tree;
1405 static boolean_t fuid_table_loaded;
1406 static boolean_t sa_loaded;
1407 sa_attr_type_t *sa_attr_table;
1408 
1409 static void
1410 fuid_table_destroy()
1411 {
1412 	if (fuid_table_loaded) {
1413 		zfs_fuid_table_destroy(&idx_tree, &domain_tree);
1414 		fuid_table_loaded = B_FALSE;
1415 	}
1416 }
1417 
1418 /*
1419  * print uid or gid information.
1420  * For normal POSIX id just the id is printed in decimal format.
1421  * For CIFS files with FUID the fuid is printed in hex followed by
1422  * the domain-rid string.
1423  */
1424 static void
1425 print_idstr(uint64_t id, const char *id_type)
1426 {
1427 	if (FUID_INDEX(id)) {
1428 		char *domain;
1429 
1430 		domain = zfs_fuid_idx_domain(&idx_tree, FUID_INDEX(id));
1431 		(void) printf("\t%s     %llx [%s-%d]\n", id_type,
1432 		    (u_longlong_t)id, domain, (int)FUID_RID(id));
1433 	} else {
1434 		(void) printf("\t%s     %llu\n", id_type, (u_longlong_t)id);
1435 	}
1436 
1437 }
1438 
1439 static void
1440 dump_uidgid(objset_t *os, uint64_t uid, uint64_t gid)
1441 {
1442 	uint32_t uid_idx, gid_idx;
1443 
1444 	uid_idx = FUID_INDEX(uid);
1445 	gid_idx = FUID_INDEX(gid);
1446 
1447 	/* Load domain table, if not already loaded */
1448 	if (!fuid_table_loaded && (uid_idx || gid_idx)) {
1449 		uint64_t fuid_obj;
1450 
1451 		/* first find the fuid object.  It lives in the master node */
1452 		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES,
1453 		    8, 1, &fuid_obj) == 0);
1454 		zfs_fuid_avl_tree_create(&idx_tree, &domain_tree);
1455 		(void) zfs_fuid_table_load(os, fuid_obj,
1456 		    &idx_tree, &domain_tree);
1457 		fuid_table_loaded = B_TRUE;
1458 	}
1459 
1460 	print_idstr(uid, "uid");
1461 	print_idstr(gid, "gid");
1462 }
1463 
1464 /*ARGSUSED*/
1465 static void
1466 dump_znode(objset_t *os, uint64_t object, void *data, size_t size)
1467 {
1468 	char path[MAXPATHLEN * 2];	/* allow for xattr and failure prefix */
1469 	sa_handle_t *hdl;
1470 	uint64_t xattr, rdev, gen;
1471 	uint64_t uid, gid, mode, fsize, parent, links;
1472 	uint64_t pflags;
1473 	uint64_t acctm[2], modtm[2], chgtm[2], crtm[2];
1474 	time_t z_crtime, z_atime, z_mtime, z_ctime;
1475 	sa_bulk_attr_t bulk[12];
1476 	int idx = 0;
1477 	int error;
1478 
1479 	if (!sa_loaded) {
1480 		uint64_t sa_attrs = 0;
1481 		uint64_t version;
1482 
1483 		VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZPL_VERSION_STR,
1484 		    8, 1, &version) == 0);
1485 		if (version >= ZPL_VERSION_SA) {
1486 			VERIFY(zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS,
1487 			    8, 1, &sa_attrs) == 0);
1488 		}
1489 		if ((error = sa_setup(os, sa_attrs, zfs_attr_table,
1490 		    ZPL_END, &sa_attr_table)) != 0) {
1491 			(void) printf("sa_setup failed errno %d, can't "
1492 			    "display znode contents\n", error);
1493 			return;
1494 		}
1495 		sa_loaded = B_TRUE;
1496 	}
1497 
1498 	if (sa_handle_get(os, object, NULL, SA_HDL_PRIVATE, &hdl)) {
1499 		(void) printf("Failed to get handle for SA znode\n");
1500 		return;
1501 	}
1502 
1503 	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_UID], NULL, &uid, 8);
1504 	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GID], NULL, &gid, 8);
1505 	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_LINKS], NULL,
1506 	    &links, 8);
1507 	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_GEN], NULL, &gen, 8);
1508 	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MODE], NULL,
1509 	    &mode, 8);
1510 	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_PARENT],
1511 	    NULL, &parent, 8);
1512 	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_SIZE], NULL,
1513 	    &fsize, 8);
1514 	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_ATIME], NULL,
1515 	    acctm, 16);
1516 	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_MTIME], NULL,
1517 	    modtm, 16);
1518 	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CRTIME], NULL,
1519 	    crtm, 16);
1520 	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_CTIME], NULL,
1521 	    chgtm, 16);
1522 	SA_ADD_BULK_ATTR(bulk, idx, sa_attr_table[ZPL_FLAGS], NULL,
1523 	    &pflags, 8);
1524 
1525 	if (sa_bulk_lookup(hdl, bulk, idx)) {
1526 		(void) sa_handle_destroy(hdl);
1527 		return;
1528 	}
1529 
1530 	error = zfs_obj_to_path(os, object, path, sizeof (path));
1531 	if (error != 0) {
1532 		(void) snprintf(path, sizeof (path), "\?\?\?<object#%llu>",
1533 		    (u_longlong_t)object);
1534 	}
1535 	if (dump_opt['d'] < 3) {
1536 		(void) printf("\t%s\n", path);
1537 		(void) sa_handle_destroy(hdl);
1538 		return;
1539 	}
1540 
1541 	z_crtime = (time_t)crtm[0];
1542 	z_atime = (time_t)acctm[0];
1543 	z_mtime = (time_t)modtm[0];
1544 	z_ctime = (time_t)chgtm[0];
1545 
1546 	(void) printf("\tpath	%s\n", path);
1547 	dump_uidgid(os, uid, gid);
1548 	(void) printf("\tatime	%s", ctime(&z_atime));
1549 	(void) printf("\tmtime	%s", ctime(&z_mtime));
1550 	(void) printf("\tctime	%s", ctime(&z_ctime));
1551 	(void) printf("\tcrtime	%s", ctime(&z_crtime));
1552 	(void) printf("\tgen	%llu\n", (u_longlong_t)gen);
1553 	(void) printf("\tmode	%llo\n", (u_longlong_t)mode);
1554 	(void) printf("\tsize	%llu\n", (u_longlong_t)fsize);
1555 	(void) printf("\tparent	%llu\n", (u_longlong_t)parent);
1556 	(void) printf("\tlinks	%llu\n", (u_longlong_t)links);
1557 	(void) printf("\tpflags	%llx\n", (u_longlong_t)pflags);
1558 	if (sa_lookup(hdl, sa_attr_table[ZPL_XATTR], &xattr,
1559 	    sizeof (uint64_t)) == 0)
1560 		(void) printf("\txattr	%llu\n", (u_longlong_t)xattr);
1561 	if (sa_lookup(hdl, sa_attr_table[ZPL_RDEV], &rdev,
1562 	    sizeof (uint64_t)) == 0)
1563 		(void) printf("\trdev	0x%016llx\n", (u_longlong_t)rdev);
1564 	sa_handle_destroy(hdl);
1565 }
1566 
1567 /*ARGSUSED*/
1568 static void
1569 dump_acl(objset_t *os, uint64_t object, void *data, size_t size)
1570 {
1571 }
1572 
1573 /*ARGSUSED*/
1574 static void
1575 dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size)
1576 {
1577 }
1578 
1579 static object_viewer_t *object_viewer[DMU_OT_NUMTYPES + 1] = {
1580 	dump_none,		/* unallocated			*/
1581 	dump_zap,		/* object directory		*/
1582 	dump_uint64,		/* object array			*/
1583 	dump_none,		/* packed nvlist		*/
1584 	dump_packed_nvlist,	/* packed nvlist size		*/
1585 	dump_none,		/* bplist			*/
1586 	dump_none,		/* bplist header		*/
1587 	dump_none,		/* SPA space map header		*/
1588 	dump_none,		/* SPA space map		*/
1589 	dump_none,		/* ZIL intent log		*/
1590 	dump_dnode,		/* DMU dnode			*/
1591 	dump_dmu_objset,	/* DMU objset			*/
1592 	dump_dsl_dir,		/* DSL directory		*/
1593 	dump_zap,		/* DSL directory child map	*/
1594 	dump_zap,		/* DSL dataset snap map		*/
1595 	dump_zap,		/* DSL props			*/
1596 	dump_dsl_dataset,	/* DSL dataset			*/
1597 	dump_znode,		/* ZFS znode			*/
1598 	dump_acl,		/* ZFS V0 ACL			*/
1599 	dump_uint8,		/* ZFS plain file		*/
1600 	dump_zpldir,		/* ZFS directory		*/
1601 	dump_zap,		/* ZFS master node		*/
1602 	dump_zap,		/* ZFS delete queue		*/
1603 	dump_uint8,		/* zvol object			*/
1604 	dump_zap,		/* zvol prop			*/
1605 	dump_uint8,		/* other uint8[]		*/
1606 	dump_uint64,		/* other uint64[]		*/
1607 	dump_zap,		/* other ZAP			*/
1608 	dump_zap,		/* persistent error log		*/
1609 	dump_uint8,		/* SPA history			*/
1610 	dump_history_offsets,	/* SPA history offsets		*/
1611 	dump_zap,		/* Pool properties		*/
1612 	dump_zap,		/* DSL permissions		*/
1613 	dump_acl,		/* ZFS ACL			*/
1614 	dump_uint8,		/* ZFS SYSACL			*/
1615 	dump_none,		/* FUID nvlist			*/
1616 	dump_packed_nvlist,	/* FUID nvlist size		*/
1617 	dump_zap,		/* DSL dataset next clones	*/
1618 	dump_zap,		/* DSL scrub queue		*/
1619 	dump_zap,		/* ZFS user/group used		*/
1620 	dump_zap,		/* ZFS user/group quota		*/
1621 	dump_zap,		/* snapshot refcount tags	*/
1622 	dump_ddt_zap,		/* DDT ZAP object		*/
1623 	dump_zap,		/* DDT statistics		*/
1624 	dump_znode,		/* SA object			*/
1625 	dump_zap,		/* SA Master Node		*/
1626 	dump_sa_attrs,		/* SA attribute registration	*/
1627 	dump_sa_layouts,	/* SA attribute layouts		*/
1628 	dump_zap,		/* DSL scrub translations	*/
1629 	dump_none,		/* fake dedup BP		*/
1630 	dump_zap,		/* deadlist			*/
1631 	dump_none,		/* deadlist hdr			*/
1632 	dump_zap,		/* dsl clones			*/
1633 	dump_none,		/* bpobj subobjs		*/
1634 	dump_unknown,		/* Unknown type, must be last	*/
1635 };
1636 
1637 static void
1638 dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header)
1639 {
1640 	dmu_buf_t *db = NULL;
1641 	dmu_object_info_t doi;
1642 	dnode_t *dn;
1643 	void *bonus = NULL;
1644 	size_t bsize = 0;
1645 	char iblk[32], dblk[32], lsize[32], asize[32], fill[32];
1646 	char bonus_size[32];
1647 	char aux[50];
1648 	int error;
1649 
1650 	if (*print_header) {
1651 		(void) printf("\n%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1652 		    "Object", "lvl", "iblk", "dblk", "dsize", "lsize",
1653 		    "%full", "type");
1654 		*print_header = 0;
1655 	}
1656 
1657 	if (object == 0) {
1658 		dn = DMU_META_DNODE(os);
1659 	} else {
1660 		error = dmu_bonus_hold(os, object, FTAG, &db);
1661 		if (error)
1662 			fatal("dmu_bonus_hold(%llu) failed, errno %u",
1663 			    object, error);
1664 		bonus = db->db_data;
1665 		bsize = db->db_size;
1666 		dn = DB_DNODE((dmu_buf_impl_t *)db);
1667 	}
1668 	dmu_object_info_from_dnode(dn, &doi);
1669 
1670 	zdb_nicenum(doi.doi_metadata_block_size, iblk);
1671 	zdb_nicenum(doi.doi_data_block_size, dblk);
1672 	zdb_nicenum(doi.doi_max_offset, lsize);
1673 	zdb_nicenum(doi.doi_physical_blocks_512 << 9, asize);
1674 	zdb_nicenum(doi.doi_bonus_size, bonus_size);
1675 	(void) sprintf(fill, "%6.2f", 100.0 * doi.doi_fill_count *
1676 	    doi.doi_data_block_size / (object == 0 ? DNODES_PER_BLOCK : 1) /
1677 	    doi.doi_max_offset);
1678 
1679 	aux[0] = '\0';
1680 
1681 	if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) {
1682 		(void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)",
1683 		    ZDB_CHECKSUM_NAME(doi.doi_checksum));
1684 	}
1685 
1686 	if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) {
1687 		(void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)",
1688 		    ZDB_COMPRESS_NAME(doi.doi_compress));
1689 	}
1690 
1691 	(void) printf("%10lld  %3u  %5s  %5s  %5s  %5s  %6s  %s%s\n",
1692 	    (u_longlong_t)object, doi.doi_indirection, iblk, dblk,
1693 	    asize, lsize, fill, ZDB_OT_NAME(doi.doi_type), aux);
1694 
1695 	if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) {
1696 		(void) printf("%10s  %3s  %5s  %5s  %5s  %5s  %6s  %s\n",
1697 		    "", "", "", "", "", bonus_size, "bonus",
1698 		    ZDB_OT_NAME(doi.doi_bonus_type));
1699 	}
1700 
1701 	if (verbosity >= 4) {
1702 		(void) printf("\tdnode flags: %s%s%s\n",
1703 		    (dn->dn_phys->dn_flags & DNODE_FLAG_USED_BYTES) ?
1704 		    "USED_BYTES " : "",
1705 		    (dn->dn_phys->dn_flags & DNODE_FLAG_USERUSED_ACCOUNTED) ?
1706 		    "USERUSED_ACCOUNTED " : "",
1707 		    (dn->dn_phys->dn_flags & DNODE_FLAG_SPILL_BLKPTR) ?
1708 		    "SPILL_BLKPTR" : "");
1709 		(void) printf("\tdnode maxblkid: %llu\n",
1710 		    (longlong_t)dn->dn_phys->dn_maxblkid);
1711 
1712 		object_viewer[ZDB_OT_TYPE(doi.doi_bonus_type)](os, object,
1713 		    bonus, bsize);
1714 		object_viewer[ZDB_OT_TYPE(doi.doi_type)](os, object, NULL, 0);
1715 		*print_header = 1;
1716 	}
1717 
1718 	if (verbosity >= 5)
1719 		dump_indirect(dn);
1720 
1721 	if (verbosity >= 5) {
1722 		/*
1723 		 * Report the list of segments that comprise the object.
1724 		 */
1725 		uint64_t start = 0;
1726 		uint64_t end;
1727 		uint64_t blkfill = 1;
1728 		int minlvl = 1;
1729 
1730 		if (dn->dn_type == DMU_OT_DNODE) {
1731 			minlvl = 0;
1732 			blkfill = DNODES_PER_BLOCK;
1733 		}
1734 
1735 		for (;;) {
1736 			char segsize[32];
1737 			error = dnode_next_offset(dn,
1738 			    0, &start, minlvl, blkfill, 0);
1739 			if (error)
1740 				break;
1741 			end = start;
1742 			error = dnode_next_offset(dn,
1743 			    DNODE_FIND_HOLE, &end, minlvl, blkfill, 0);
1744 			zdb_nicenum(end - start, segsize);
1745 			(void) printf("\t\tsegment [%016llx, %016llx)"
1746 			    " size %5s\n", (u_longlong_t)start,
1747 			    (u_longlong_t)end, segsize);
1748 			if (error)
1749 				break;
1750 			start = end;
1751 		}
1752 	}
1753 
1754 	if (db != NULL)
1755 		dmu_buf_rele(db, FTAG);
1756 }
1757 
1758 static char *objset_types[DMU_OST_NUMTYPES] = {
1759 	"NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" };
1760 
1761 static void
1762 dump_dir(objset_t *os)
1763 {
1764 	dmu_objset_stats_t dds;
1765 	uint64_t object, object_count;
1766 	uint64_t refdbytes, usedobjs, scratch;
1767 	char numbuf[32];
1768 	char blkbuf[BP_SPRINTF_LEN + 20];
1769 	char osname[MAXNAMELEN];
1770 	char *type = "UNKNOWN";
1771 	int verbosity = dump_opt['d'];
1772 	int print_header = 1;
1773 	int i, error;
1774 
1775 	dsl_pool_config_enter(dmu_objset_pool(os), FTAG);
1776 	dmu_objset_fast_stat(os, &dds);
1777 	dsl_pool_config_exit(dmu_objset_pool(os), FTAG);
1778 
1779 	if (dds.dds_type < DMU_OST_NUMTYPES)
1780 		type = objset_types[dds.dds_type];
1781 
1782 	if (dds.dds_type == DMU_OST_META) {
1783 		dds.dds_creation_txg = TXG_INITIAL;
1784 		usedobjs = os->os_rootbp->blk_fill;
1785 		refdbytes = os->os_spa->spa_dsl_pool->
1786 		    dp_mos_dir->dd_phys->dd_used_bytes;
1787 	} else {
1788 		dmu_objset_space(os, &refdbytes, &scratch, &usedobjs, &scratch);
1789 	}
1790 
1791 	ASSERT3U(usedobjs, ==, os->os_rootbp->blk_fill);
1792 
1793 	zdb_nicenum(refdbytes, numbuf);
1794 
1795 	if (verbosity >= 4) {
1796 		(void) sprintf(blkbuf, ", rootbp ");
1797 		(void) sprintf_blkptr(blkbuf + strlen(blkbuf), os->os_rootbp);
1798 	} else {
1799 		blkbuf[0] = '\0';
1800 	}
1801 
1802 	dmu_objset_name(os, osname);
1803 
1804 	(void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, "
1805 	    "%s, %llu objects%s\n",
1806 	    osname, type, (u_longlong_t)dmu_objset_id(os),
1807 	    (u_longlong_t)dds.dds_creation_txg,
1808 	    numbuf, (u_longlong_t)usedobjs, blkbuf);
1809 
1810 	if (zopt_objects != 0) {
1811 		for (i = 0; i < zopt_objects; i++)
1812 			dump_object(os, zopt_object[i], verbosity,
1813 			    &print_header);
1814 		(void) printf("\n");
1815 		return;
1816 	}
1817 
1818 	if (dump_opt['i'] != 0 || verbosity >= 2)
1819 		dump_intent_log(dmu_objset_zil(os));
1820 
1821 	if (dmu_objset_ds(os) != NULL)
1822 		dump_deadlist(&dmu_objset_ds(os)->ds_deadlist);
1823 
1824 	if (verbosity < 2)
1825 		return;
1826 
1827 	if (os->os_rootbp->blk_birth == 0)
1828 		return;
1829 
1830 	dump_object(os, 0, verbosity, &print_header);
1831 	object_count = 0;
1832 	if (DMU_USERUSED_DNODE(os) != NULL &&
1833 	    DMU_USERUSED_DNODE(os)->dn_type != 0) {
1834 		dump_object(os, DMU_USERUSED_OBJECT, verbosity, &print_header);
1835 		dump_object(os, DMU_GROUPUSED_OBJECT, verbosity, &print_header);
1836 	}
1837 
1838 	object = 0;
1839 	while ((error = dmu_object_next(os, &object, B_FALSE, 0)) == 0) {
1840 		dump_object(os, object, verbosity, &print_header);
1841 		object_count++;
1842 	}
1843 
1844 	ASSERT3U(object_count, ==, usedobjs);
1845 
1846 	(void) printf("\n");
1847 
1848 	if (error != ESRCH) {
1849 		(void) fprintf(stderr, "dmu_object_next() = %d\n", error);
1850 		abort();
1851 	}
1852 }
1853 
1854 static void
1855 dump_uberblock(uberblock_t *ub, const char *header, const char *footer)
1856 {
1857 	time_t timestamp = ub->ub_timestamp;
1858 
1859 	(void) printf(header ? header : "");
1860 	(void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic);
1861 	(void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version);
1862 	(void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg);
1863 	(void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum);
1864 	(void) printf("\ttimestamp = %llu UTC = %s",
1865 	    (u_longlong_t)ub->ub_timestamp, asctime(localtime(&timestamp)));
1866 	if (dump_opt['u'] >= 3) {
1867 		char blkbuf[BP_SPRINTF_LEN];
1868 		sprintf_blkptr(blkbuf, &ub->ub_rootbp);
1869 		(void) printf("\trootbp = %s\n", blkbuf);
1870 	}
1871 	(void) printf(footer ? footer : "");
1872 }
1873 
1874 static void
1875 dump_config(spa_t *spa)
1876 {
1877 	dmu_buf_t *db;
1878 	size_t nvsize = 0;
1879 	int error = 0;
1880 
1881 
1882 	error = dmu_bonus_hold(spa->spa_meta_objset,
1883 	    spa->spa_config_object, FTAG, &db);
1884 
1885 	if (error == 0) {
1886 		nvsize = *(uint64_t *)db->db_data;
1887 		dmu_buf_rele(db, FTAG);
1888 
1889 		(void) printf("\nMOS Configuration:\n");
1890 		dump_packed_nvlist(spa->spa_meta_objset,
1891 		    spa->spa_config_object, (void *)&nvsize, 1);
1892 	} else {
1893 		(void) fprintf(stderr, "dmu_bonus_hold(%llu) failed, errno %d",
1894 		    (u_longlong_t)spa->spa_config_object, error);
1895 	}
1896 }
1897 
1898 static void
1899 dump_cachefile(const char *cachefile)
1900 {
1901 	int fd;
1902 	struct stat64 statbuf;
1903 	char *buf;
1904 	nvlist_t *config;
1905 
1906 	if ((fd = open64(cachefile, O_RDONLY)) < 0) {
1907 		(void) printf("cannot open '%s': %s\n", cachefile,
1908 		    strerror(errno));
1909 		exit(1);
1910 	}
1911 
1912 	if (fstat64(fd, &statbuf) != 0) {
1913 		(void) printf("failed to stat '%s': %s\n", cachefile,
1914 		    strerror(errno));
1915 		exit(1);
1916 	}
1917 
1918 	if ((buf = malloc(statbuf.st_size)) == NULL) {
1919 		(void) fprintf(stderr, "failed to allocate %llu bytes\n",
1920 		    (u_longlong_t)statbuf.st_size);
1921 		exit(1);
1922 	}
1923 
1924 	if (read(fd, buf, statbuf.st_size) != statbuf.st_size) {
1925 		(void) fprintf(stderr, "failed to read %llu bytes\n",
1926 		    (u_longlong_t)statbuf.st_size);
1927 		exit(1);
1928 	}
1929 
1930 	(void) close(fd);
1931 
1932 	if (nvlist_unpack(buf, statbuf.st_size, &config, 0) != 0) {
1933 		(void) fprintf(stderr, "failed to unpack nvlist\n");
1934 		exit(1);
1935 	}
1936 
1937 	free(buf);
1938 
1939 	dump_nvlist(config, 0);
1940 
1941 	nvlist_free(config);
1942 }
1943 
1944 #define	ZDB_MAX_UB_HEADER_SIZE 32
1945 
1946 static void
1947 dump_label_uberblocks(vdev_label_t *lbl, uint64_t ashift)
1948 {
1949 	vdev_t vd;
1950 	vdev_t *vdp = &vd;
1951 	char header[ZDB_MAX_UB_HEADER_SIZE];
1952 
1953 	vd.vdev_ashift = ashift;
1954 	vdp->vdev_top = vdp;
1955 
1956 	for (int i = 0; i < VDEV_UBERBLOCK_COUNT(vdp); i++) {
1957 		uint64_t uoff = VDEV_UBERBLOCK_OFFSET(vdp, i);
1958 		uberblock_t *ub = (void *)((char *)lbl + uoff);
1959 
1960 		if (uberblock_verify(ub))
1961 			continue;
1962 		(void) snprintf(header, ZDB_MAX_UB_HEADER_SIZE,
1963 		    "Uberblock[%d]\n", i);
1964 		dump_uberblock(ub, header, "");
1965 	}
1966 }
1967 
1968 static void
1969 dump_label(const char *dev)
1970 {
1971 	int fd;
1972 	vdev_label_t label;
1973 	char *path, *buf = label.vl_vdev_phys.vp_nvlist;
1974 	size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist);
1975 	struct stat64 statbuf;
1976 	uint64_t psize, ashift;
1977 	int len = strlen(dev) + 1;
1978 
1979 	if (strncmp(dev, "/dev/dsk/", 9) == 0) {
1980 		len++;
1981 		path = malloc(len);
1982 		(void) snprintf(path, len, "%s%s", "/dev/rdsk/", dev + 9);
1983 	} else {
1984 		path = strdup(dev);
1985 	}
1986 
1987 	if ((fd = open64(path, O_RDONLY)) < 0) {
1988 		(void) printf("cannot open '%s': %s\n", path, strerror(errno));
1989 		free(path);
1990 		exit(1);
1991 	}
1992 
1993 	if (fstat64(fd, &statbuf) != 0) {
1994 		(void) printf("failed to stat '%s': %s\n", path,
1995 		    strerror(errno));
1996 		free(path);
1997 		(void) close(fd);
1998 		exit(1);
1999 	}
2000 
2001 	if (S_ISBLK(statbuf.st_mode)) {
2002 		(void) printf("cannot use '%s': character device required\n",
2003 		    path);
2004 		free(path);
2005 		(void) close(fd);
2006 		exit(1);
2007 	}
2008 
2009 	psize = statbuf.st_size;
2010 	psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t));
2011 
2012 	for (int l = 0; l < VDEV_LABELS; l++) {
2013 		nvlist_t *config = NULL;
2014 
2015 		(void) printf("--------------------------------------------\n");
2016 		(void) printf("LABEL %d\n", l);
2017 		(void) printf("--------------------------------------------\n");
2018 
2019 		if (pread64(fd, &label, sizeof (label),
2020 		    vdev_label_offset(psize, l, 0)) != sizeof (label)) {
2021 			(void) printf("failed to read label %d\n", l);
2022 			continue;
2023 		}
2024 
2025 		if (nvlist_unpack(buf, buflen, &config, 0) != 0) {
2026 			(void) printf("failed to unpack label %d\n", l);
2027 			ashift = SPA_MINBLOCKSHIFT;
2028 		} else {
2029 			nvlist_t *vdev_tree = NULL;
2030 
2031 			dump_nvlist(config, 4);
2032 			if ((nvlist_lookup_nvlist(config,
2033 			    ZPOOL_CONFIG_VDEV_TREE, &vdev_tree) != 0) ||
2034 			    (nvlist_lookup_uint64(vdev_tree,
2035 			    ZPOOL_CONFIG_ASHIFT, &ashift) != 0))
2036 				ashift = SPA_MINBLOCKSHIFT;
2037 			nvlist_free(config);
2038 		}
2039 		if (dump_opt['u'])
2040 			dump_label_uberblocks(&label, ashift);
2041 	}
2042 
2043 	free(path);
2044 	(void) close(fd);
2045 }
2046 
2047 /*ARGSUSED*/
2048 static int
2049 dump_one_dir(const char *dsname, void *arg)
2050 {
2051 	int error;
2052 	objset_t *os;
2053 
2054 	error = dmu_objset_own(dsname, DMU_OST_ANY, B_TRUE, FTAG, &os);
2055 	if (error) {
2056 		(void) printf("Could not open %s, error %d\n", dsname, error);
2057 		return (0);
2058 	}
2059 	dump_dir(os);
2060 	dmu_objset_disown(os, FTAG);
2061 	fuid_table_destroy();
2062 	sa_loaded = B_FALSE;
2063 	return (0);
2064 }
2065 
2066 /*
2067  * Block statistics.
2068  */
2069 #define	PSIZE_HISTO_SIZE (SPA_MAXBLOCKSIZE / SPA_MINBLOCKSIZE + 1)
2070 typedef struct zdb_blkstats {
2071 	uint64_t zb_asize;
2072 	uint64_t zb_lsize;
2073 	uint64_t zb_psize;
2074 	uint64_t zb_count;
2075 	uint64_t zb_gangs;
2076 	uint64_t zb_ditto_samevdev;
2077 	uint64_t zb_psize_histogram[PSIZE_HISTO_SIZE];
2078 } zdb_blkstats_t;
2079 
2080 /*
2081  * Extended object types to report deferred frees and dedup auto-ditto blocks.
2082  */
2083 #define	ZDB_OT_DEFERRED	(DMU_OT_NUMTYPES + 0)
2084 #define	ZDB_OT_DITTO	(DMU_OT_NUMTYPES + 1)
2085 #define	ZDB_OT_OTHER	(DMU_OT_NUMTYPES + 2)
2086 #define	ZDB_OT_TOTAL	(DMU_OT_NUMTYPES + 3)
2087 
2088 static char *zdb_ot_extname[] = {
2089 	"deferred free",
2090 	"dedup ditto",
2091 	"other",
2092 	"Total",
2093 };
2094 
2095 #define	ZB_TOTAL	DN_MAX_LEVELS
2096 
2097 typedef struct zdb_cb {
2098 	zdb_blkstats_t	zcb_type[ZB_TOTAL + 1][ZDB_OT_TOTAL + 1];
2099 	uint64_t	zcb_dedup_asize;
2100 	uint64_t	zcb_dedup_blocks;
2101 	uint64_t	zcb_start;
2102 	uint64_t	zcb_lastprint;
2103 	uint64_t	zcb_totalasize;
2104 	uint64_t	zcb_errors[256];
2105 	int		zcb_readfails;
2106 	int		zcb_haderrors;
2107 	spa_t		*zcb_spa;
2108 } zdb_cb_t;
2109 
2110 static void
2111 zdb_count_block(zdb_cb_t *zcb, zilog_t *zilog, const blkptr_t *bp,
2112     dmu_object_type_t type)
2113 {
2114 	uint64_t refcnt = 0;
2115 
2116 	ASSERT(type < ZDB_OT_TOTAL);
2117 
2118 	if (zilog && zil_bp_tree_add(zilog, bp) != 0)
2119 		return;
2120 
2121 	for (int i = 0; i < 4; i++) {
2122 		int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL;
2123 		int t = (i & 1) ? type : ZDB_OT_TOTAL;
2124 		int equal;
2125 		zdb_blkstats_t *zb = &zcb->zcb_type[l][t];
2126 
2127 		zb->zb_asize += BP_GET_ASIZE(bp);
2128 		zb->zb_lsize += BP_GET_LSIZE(bp);
2129 		zb->zb_psize += BP_GET_PSIZE(bp);
2130 		zb->zb_count++;
2131 		zb->zb_psize_histogram[BP_GET_PSIZE(bp) >> SPA_MINBLOCKSHIFT]++;
2132 
2133 		zb->zb_gangs += BP_COUNT_GANG(bp);
2134 
2135 		switch (BP_GET_NDVAS(bp)) {
2136 		case 2:
2137 			if (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2138 			    DVA_GET_VDEV(&bp->blk_dva[1]))
2139 				zb->zb_ditto_samevdev++;
2140 			break;
2141 		case 3:
2142 			equal = (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2143 			    DVA_GET_VDEV(&bp->blk_dva[1])) +
2144 			    (DVA_GET_VDEV(&bp->blk_dva[0]) ==
2145 			    DVA_GET_VDEV(&bp->blk_dva[2])) +
2146 			    (DVA_GET_VDEV(&bp->blk_dva[1]) ==
2147 			    DVA_GET_VDEV(&bp->blk_dva[2]));
2148 			if (equal != 0)
2149 				zb->zb_ditto_samevdev++;
2150 			break;
2151 		}
2152 
2153 	}
2154 
2155 	if (dump_opt['L'])
2156 		return;
2157 
2158 	if (BP_GET_DEDUP(bp)) {
2159 		ddt_t *ddt;
2160 		ddt_entry_t *dde;
2161 
2162 		ddt = ddt_select(zcb->zcb_spa, bp);
2163 		ddt_enter(ddt);
2164 		dde = ddt_lookup(ddt, bp, B_FALSE);
2165 
2166 		if (dde == NULL) {
2167 			refcnt = 0;
2168 		} else {
2169 			ddt_phys_t *ddp = ddt_phys_select(dde, bp);
2170 			ddt_phys_decref(ddp);
2171 			refcnt = ddp->ddp_refcnt;
2172 			if (ddt_phys_total_refcnt(dde) == 0)
2173 				ddt_remove(ddt, dde);
2174 		}
2175 		ddt_exit(ddt);
2176 	}
2177 
2178 	VERIFY3U(zio_wait(zio_claim(NULL, zcb->zcb_spa,
2179 	    refcnt ? 0 : spa_first_txg(zcb->zcb_spa),
2180 	    bp, NULL, NULL, ZIO_FLAG_CANFAIL)), ==, 0);
2181 }
2182 
2183 static void
2184 zdb_blkptr_done(zio_t *zio)
2185 {
2186 	spa_t *spa = zio->io_spa;
2187 	blkptr_t *bp = zio->io_bp;
2188 	int ioerr = zio->io_error;
2189 	zdb_cb_t *zcb = zio->io_private;
2190 	zbookmark_t *zb = &zio->io_bookmark;
2191 
2192 	zio_data_buf_free(zio->io_data, zio->io_size);
2193 
2194 	mutex_enter(&spa->spa_scrub_lock);
2195 	spa->spa_scrub_inflight--;
2196 	cv_broadcast(&spa->spa_scrub_io_cv);
2197 
2198 	if (ioerr && !(zio->io_flags & ZIO_FLAG_SPECULATIVE)) {
2199 		char blkbuf[BP_SPRINTF_LEN];
2200 
2201 		zcb->zcb_haderrors = 1;
2202 		zcb->zcb_errors[ioerr]++;
2203 
2204 		if (dump_opt['b'] >= 2)
2205 			sprintf_blkptr(blkbuf, bp);
2206 		else
2207 			blkbuf[0] = '\0';
2208 
2209 		(void) printf("zdb_blkptr_cb: "
2210 		    "Got error %d reading "
2211 		    "<%llu, %llu, %lld, %llx> %s -- skipping\n",
2212 		    ioerr,
2213 		    (u_longlong_t)zb->zb_objset,
2214 		    (u_longlong_t)zb->zb_object,
2215 		    (u_longlong_t)zb->zb_level,
2216 		    (u_longlong_t)zb->zb_blkid,
2217 		    blkbuf);
2218 	}
2219 	mutex_exit(&spa->spa_scrub_lock);
2220 }
2221 
2222 static int
2223 zdb_blkptr_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2224     const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2225 {
2226 	zdb_cb_t *zcb = arg;
2227 	char blkbuf[BP_SPRINTF_LEN];
2228 	dmu_object_type_t type;
2229 	boolean_t is_metadata;
2230 
2231 	if (bp == NULL)
2232 		return (0);
2233 
2234 	type = BP_GET_TYPE(bp);
2235 
2236 	zdb_count_block(zcb, zilog, bp,
2237 	    (type & DMU_OT_NEWTYPE) ? ZDB_OT_OTHER : type);
2238 
2239 	is_metadata = (BP_GET_LEVEL(bp) != 0 || DMU_OT_IS_METADATA(type));
2240 
2241 	if (dump_opt['c'] > 1 || (dump_opt['c'] && is_metadata)) {
2242 		size_t size = BP_GET_PSIZE(bp);
2243 		void *data = zio_data_buf_alloc(size);
2244 		int flags = ZIO_FLAG_CANFAIL | ZIO_FLAG_SCRUB | ZIO_FLAG_RAW;
2245 
2246 		/* If it's an intent log block, failure is expected. */
2247 		if (zb->zb_level == ZB_ZIL_LEVEL)
2248 			flags |= ZIO_FLAG_SPECULATIVE;
2249 
2250 		mutex_enter(&spa->spa_scrub_lock);
2251 		while (spa->spa_scrub_inflight > max_inflight)
2252 			cv_wait(&spa->spa_scrub_io_cv, &spa->spa_scrub_lock);
2253 		spa->spa_scrub_inflight++;
2254 		mutex_exit(&spa->spa_scrub_lock);
2255 
2256 		zio_nowait(zio_read(NULL, spa, bp, data, size,
2257 		    zdb_blkptr_done, zcb, ZIO_PRIORITY_ASYNC_READ, flags, zb));
2258 	}
2259 
2260 	zcb->zcb_readfails = 0;
2261 
2262 	if (dump_opt['b'] >= 5) {
2263 		sprintf_blkptr(blkbuf, bp);
2264 		(void) printf("objset %llu object %llu "
2265 		    "level %lld offset 0x%llx %s\n",
2266 		    (u_longlong_t)zb->zb_objset,
2267 		    (u_longlong_t)zb->zb_object,
2268 		    (longlong_t)zb->zb_level,
2269 		    (u_longlong_t)blkid2offset(dnp, bp, zb),
2270 		    blkbuf);
2271 	}
2272 
2273 	if (dump_opt['b'] < 5 && isatty(STDERR_FILENO) &&
2274 	    gethrtime() > zcb->zcb_lastprint + NANOSEC) {
2275 		uint64_t now = gethrtime();
2276 		char buf[10];
2277 		uint64_t bytes = zcb->zcb_type[ZB_TOTAL][ZDB_OT_TOTAL].zb_asize;
2278 		int kb_per_sec =
2279 		    1 + bytes / (1 + ((now - zcb->zcb_start) / 1000 / 1000));
2280 		int sec_remaining =
2281 		    (zcb->zcb_totalasize - bytes) / 1024 / kb_per_sec;
2282 
2283 		zfs_nicenum(bytes, buf, sizeof (buf));
2284 		(void) fprintf(stderr,
2285 		    "\r%5s completed (%4dMB/s) "
2286 		    "estimated time remaining: %uhr %02umin %02usec        ",
2287 		    buf, kb_per_sec / 1024,
2288 		    sec_remaining / 60 / 60,
2289 		    sec_remaining / 60 % 60,
2290 		    sec_remaining % 60);
2291 
2292 		zcb->zcb_lastprint = now;
2293 	}
2294 
2295 	return (0);
2296 }
2297 
2298 static void
2299 zdb_leak(void *arg, uint64_t start, uint64_t size)
2300 {
2301 	vdev_t *vd = arg;
2302 
2303 	(void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n",
2304 	    (u_longlong_t)vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size);
2305 }
2306 
2307 static metaslab_ops_t zdb_metaslab_ops = {
2308 	NULL,	/* alloc */
2309 	NULL	/* fragmented */
2310 };
2311 
2312 static void
2313 zdb_ddt_leak_init(spa_t *spa, zdb_cb_t *zcb)
2314 {
2315 	ddt_bookmark_t ddb = { 0 };
2316 	ddt_entry_t dde;
2317 	int error;
2318 
2319 	while ((error = ddt_walk(spa, &ddb, &dde)) == 0) {
2320 		blkptr_t blk;
2321 		ddt_phys_t *ddp = dde.dde_phys;
2322 
2323 		if (ddb.ddb_class == DDT_CLASS_UNIQUE)
2324 			return;
2325 
2326 		ASSERT(ddt_phys_total_refcnt(&dde) > 1);
2327 
2328 		for (int p = 0; p < DDT_PHYS_TYPES; p++, ddp++) {
2329 			if (ddp->ddp_phys_birth == 0)
2330 				continue;
2331 			ddt_bp_create(ddb.ddb_checksum,
2332 			    &dde.dde_key, ddp, &blk);
2333 			if (p == DDT_PHYS_DITTO) {
2334 				zdb_count_block(zcb, NULL, &blk, ZDB_OT_DITTO);
2335 			} else {
2336 				zcb->zcb_dedup_asize +=
2337 				    BP_GET_ASIZE(&blk) * (ddp->ddp_refcnt - 1);
2338 				zcb->zcb_dedup_blocks++;
2339 			}
2340 		}
2341 		if (!dump_opt['L']) {
2342 			ddt_t *ddt = spa->spa_ddt[ddb.ddb_checksum];
2343 			ddt_enter(ddt);
2344 			VERIFY(ddt_lookup(ddt, &blk, B_TRUE) != NULL);
2345 			ddt_exit(ddt);
2346 		}
2347 	}
2348 
2349 	ASSERT(error == ENOENT);
2350 }
2351 
2352 static void
2353 zdb_leak_init(spa_t *spa, zdb_cb_t *zcb)
2354 {
2355 	zcb->zcb_spa = spa;
2356 
2357 	if (!dump_opt['L']) {
2358 		vdev_t *rvd = spa->spa_root_vdev;
2359 		for (int c = 0; c < rvd->vdev_children; c++) {
2360 			vdev_t *vd = rvd->vdev_child[c];
2361 			for (int m = 0; m < vd->vdev_ms_count; m++) {
2362 				metaslab_t *msp = vd->vdev_ms[m];
2363 				mutex_enter(&msp->ms_lock);
2364 				metaslab_unload(msp);
2365 
2366 				/*
2367 				 * For leak detection, we overload the metaslab
2368 				 * ms_tree to contain allocated segments
2369 				 * instead of free segments. As a result,
2370 				 * we can't use the normal metaslab_load/unload
2371 				 * interfaces.
2372 				 */
2373 				if (msp->ms_sm != NULL) {
2374 					msp->ms_ops = &zdb_metaslab_ops;
2375 					VERIFY0(space_map_load(msp->ms_sm,
2376 					    msp->ms_tree, SM_ALLOC));
2377 					msp->ms_loaded = B_TRUE;
2378 				}
2379 				mutex_exit(&msp->ms_lock);
2380 			}
2381 		}
2382 	}
2383 
2384 	spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2385 
2386 	zdb_ddt_leak_init(spa, zcb);
2387 
2388 	spa_config_exit(spa, SCL_CONFIG, FTAG);
2389 }
2390 
2391 static void
2392 zdb_leak_fini(spa_t *spa)
2393 {
2394 	if (!dump_opt['L']) {
2395 		vdev_t *rvd = spa->spa_root_vdev;
2396 		for (int c = 0; c < rvd->vdev_children; c++) {
2397 			vdev_t *vd = rvd->vdev_child[c];
2398 			for (int m = 0; m < vd->vdev_ms_count; m++) {
2399 				metaslab_t *msp = vd->vdev_ms[m];
2400 				mutex_enter(&msp->ms_lock);
2401 
2402 				/*
2403 				 * The ms_tree has been overloaded to
2404 				 * contain allocated segments. Now that we
2405 				 * finished traversing all blocks, any
2406 				 * block that remains in the ms_tree
2407 				 * represents an allocated block that we
2408 				 * did not claim during the traversal.
2409 				 * Claimed blocks would have been removed
2410 				 * from the ms_tree.
2411 				 */
2412 				range_tree_vacate(msp->ms_tree, zdb_leak, vd);
2413 				msp->ms_loaded = B_FALSE;
2414 
2415 				mutex_exit(&msp->ms_lock);
2416 			}
2417 		}
2418 	}
2419 }
2420 
2421 /* ARGSUSED */
2422 static int
2423 count_block_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx)
2424 {
2425 	zdb_cb_t *zcb = arg;
2426 
2427 	if (dump_opt['b'] >= 5) {
2428 		char blkbuf[BP_SPRINTF_LEN];
2429 		sprintf_blkptr(blkbuf, bp);
2430 		(void) printf("[%s] %s\n",
2431 		    "deferred free", blkbuf);
2432 	}
2433 	zdb_count_block(zcb, NULL, bp, ZDB_OT_DEFERRED);
2434 	return (0);
2435 }
2436 
2437 static int
2438 dump_block_stats(spa_t *spa)
2439 {
2440 	zdb_cb_t zcb = { 0 };
2441 	zdb_blkstats_t *zb, *tzb;
2442 	uint64_t norm_alloc, norm_space, total_alloc, total_found;
2443 	int flags = TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA | TRAVERSE_HARD;
2444 	int leaks = 0;
2445 
2446 	(void) printf("\nTraversing all blocks %s%s%s%s%s...\n\n",
2447 	    (dump_opt['c'] || !dump_opt['L']) ? "to verify " : "",
2448 	    (dump_opt['c'] == 1) ? "metadata " : "",
2449 	    dump_opt['c'] ? "checksums " : "",
2450 	    (dump_opt['c'] && !dump_opt['L']) ? "and verify " : "",
2451 	    !dump_opt['L'] ? "nothing leaked " : "");
2452 
2453 	/*
2454 	 * Load all space maps as SM_ALLOC maps, then traverse the pool
2455 	 * claiming each block we discover.  If the pool is perfectly
2456 	 * consistent, the space maps will be empty when we're done.
2457 	 * Anything left over is a leak; any block we can't claim (because
2458 	 * it's not part of any space map) is a double allocation,
2459 	 * reference to a freed block, or an unclaimed log block.
2460 	 */
2461 	zdb_leak_init(spa, &zcb);
2462 
2463 	/*
2464 	 * If there's a deferred-free bplist, process that first.
2465 	 */
2466 	(void) bpobj_iterate_nofree(&spa->spa_deferred_bpobj,
2467 	    count_block_cb, &zcb, NULL);
2468 	if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2469 		(void) bpobj_iterate_nofree(&spa->spa_dsl_pool->dp_free_bpobj,
2470 		    count_block_cb, &zcb, NULL);
2471 	}
2472 	if (spa_feature_is_active(spa, SPA_FEATURE_ASYNC_DESTROY)) {
2473 		VERIFY3U(0, ==, bptree_iterate(spa->spa_meta_objset,
2474 		    spa->spa_dsl_pool->dp_bptree_obj, B_FALSE, count_block_cb,
2475 		    &zcb, NULL));
2476 	}
2477 
2478 	if (dump_opt['c'] > 1)
2479 		flags |= TRAVERSE_PREFETCH_DATA;
2480 
2481 	zcb.zcb_totalasize = metaslab_class_get_alloc(spa_normal_class(spa));
2482 	zcb.zcb_start = zcb.zcb_lastprint = gethrtime();
2483 	zcb.zcb_haderrors |= traverse_pool(spa, 0, flags, zdb_blkptr_cb, &zcb);
2484 
2485 	/*
2486 	 * If we've traversed the data blocks then we need to wait for those
2487 	 * I/Os to complete. We leverage "The Godfather" zio to wait on
2488 	 * all async I/Os to complete.
2489 	 */
2490 	if (dump_opt['c']) {
2491 		(void) zio_wait(spa->spa_async_zio_root);
2492 		spa->spa_async_zio_root = zio_root(spa, NULL, NULL,
2493 		    ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE |
2494 		    ZIO_FLAG_GODFATHER);
2495 	}
2496 
2497 	if (zcb.zcb_haderrors) {
2498 		(void) printf("\nError counts:\n\n");
2499 		(void) printf("\t%5s  %s\n", "errno", "count");
2500 		for (int e = 0; e < 256; e++) {
2501 			if (zcb.zcb_errors[e] != 0) {
2502 				(void) printf("\t%5d  %llu\n",
2503 				    e, (u_longlong_t)zcb.zcb_errors[e]);
2504 			}
2505 		}
2506 	}
2507 
2508 	/*
2509 	 * Report any leaked segments.
2510 	 */
2511 	zdb_leak_fini(spa);
2512 
2513 	tzb = &zcb.zcb_type[ZB_TOTAL][ZDB_OT_TOTAL];
2514 
2515 	norm_alloc = metaslab_class_get_alloc(spa_normal_class(spa));
2516 	norm_space = metaslab_class_get_space(spa_normal_class(spa));
2517 
2518 	total_alloc = norm_alloc + metaslab_class_get_alloc(spa_log_class(spa));
2519 	total_found = tzb->zb_asize - zcb.zcb_dedup_asize;
2520 
2521 	if (total_found == total_alloc) {
2522 		if (!dump_opt['L'])
2523 			(void) printf("\n\tNo leaks (block sum matches space"
2524 			    " maps exactly)\n");
2525 	} else {
2526 		(void) printf("block traversal size %llu != alloc %llu "
2527 		    "(%s %lld)\n",
2528 		    (u_longlong_t)total_found,
2529 		    (u_longlong_t)total_alloc,
2530 		    (dump_opt['L']) ? "unreachable" : "leaked",
2531 		    (longlong_t)(total_alloc - total_found));
2532 		leaks = 1;
2533 	}
2534 
2535 	if (tzb->zb_count == 0)
2536 		return (2);
2537 
2538 	(void) printf("\n");
2539 	(void) printf("\tbp count:      %10llu\n",
2540 	    (u_longlong_t)tzb->zb_count);
2541 	(void) printf("\tganged count:  %10llu\n",
2542 	    (longlong_t)tzb->zb_gangs);
2543 	(void) printf("\tbp logical:    %10llu      avg: %6llu\n",
2544 	    (u_longlong_t)tzb->zb_lsize,
2545 	    (u_longlong_t)(tzb->zb_lsize / tzb->zb_count));
2546 	(void) printf("\tbp physical:   %10llu      avg:"
2547 	    " %6llu     compression: %6.2f\n",
2548 	    (u_longlong_t)tzb->zb_psize,
2549 	    (u_longlong_t)(tzb->zb_psize / tzb->zb_count),
2550 	    (double)tzb->zb_lsize / tzb->zb_psize);
2551 	(void) printf("\tbp allocated:  %10llu      avg:"
2552 	    " %6llu     compression: %6.2f\n",
2553 	    (u_longlong_t)tzb->zb_asize,
2554 	    (u_longlong_t)(tzb->zb_asize / tzb->zb_count),
2555 	    (double)tzb->zb_lsize / tzb->zb_asize);
2556 	(void) printf("\tbp deduped:    %10llu    ref>1:"
2557 	    " %6llu   deduplication: %6.2f\n",
2558 	    (u_longlong_t)zcb.zcb_dedup_asize,
2559 	    (u_longlong_t)zcb.zcb_dedup_blocks,
2560 	    (double)zcb.zcb_dedup_asize / tzb->zb_asize + 1.0);
2561 	(void) printf("\tSPA allocated: %10llu     used: %5.2f%%\n",
2562 	    (u_longlong_t)norm_alloc, 100.0 * norm_alloc / norm_space);
2563 
2564 	if (tzb->zb_ditto_samevdev != 0) {
2565 		(void) printf("\tDittoed blocks on same vdev: %llu\n",
2566 		    (longlong_t)tzb->zb_ditto_samevdev);
2567 	}
2568 
2569 	if (dump_opt['b'] >= 2) {
2570 		int l, t, level;
2571 		(void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE"
2572 		    "\t  avg\t comp\t%%Total\tType\n");
2573 
2574 		for (t = 0; t <= ZDB_OT_TOTAL; t++) {
2575 			char csize[32], lsize[32], psize[32], asize[32];
2576 			char avg[32], gang[32];
2577 			char *typename;
2578 
2579 			if (t < DMU_OT_NUMTYPES)
2580 				typename = dmu_ot[t].ot_name;
2581 			else
2582 				typename = zdb_ot_extname[t - DMU_OT_NUMTYPES];
2583 
2584 			if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) {
2585 				(void) printf("%6s\t%5s\t%5s\t%5s"
2586 				    "\t%5s\t%5s\t%6s\t%s\n",
2587 				    "-",
2588 				    "-",
2589 				    "-",
2590 				    "-",
2591 				    "-",
2592 				    "-",
2593 				    "-",
2594 				    typename);
2595 				continue;
2596 			}
2597 
2598 			for (l = ZB_TOTAL - 1; l >= -1; l--) {
2599 				level = (l == -1 ? ZB_TOTAL : l);
2600 				zb = &zcb.zcb_type[level][t];
2601 
2602 				if (zb->zb_asize == 0)
2603 					continue;
2604 
2605 				if (dump_opt['b'] < 3 && level != ZB_TOTAL)
2606 					continue;
2607 
2608 				if (level == 0 && zb->zb_asize ==
2609 				    zcb.zcb_type[ZB_TOTAL][t].zb_asize)
2610 					continue;
2611 
2612 				zdb_nicenum(zb->zb_count, csize);
2613 				zdb_nicenum(zb->zb_lsize, lsize);
2614 				zdb_nicenum(zb->zb_psize, psize);
2615 				zdb_nicenum(zb->zb_asize, asize);
2616 				zdb_nicenum(zb->zb_asize / zb->zb_count, avg);
2617 				zdb_nicenum(zb->zb_gangs, gang);
2618 
2619 				(void) printf("%6s\t%5s\t%5s\t%5s\t%5s"
2620 				    "\t%5.2f\t%6.2f\t",
2621 				    csize, lsize, psize, asize, avg,
2622 				    (double)zb->zb_lsize / zb->zb_psize,
2623 				    100.0 * zb->zb_asize / tzb->zb_asize);
2624 
2625 				if (level == ZB_TOTAL)
2626 					(void) printf("%s\n", typename);
2627 				else
2628 					(void) printf("    L%d %s\n",
2629 					    level, typename);
2630 
2631 				if (dump_opt['b'] >= 3 && zb->zb_gangs > 0) {
2632 					(void) printf("\t number of ganged "
2633 					    "blocks: %s\n", gang);
2634 				}
2635 
2636 				if (dump_opt['b'] >= 4) {
2637 					(void) printf("psize "
2638 					    "(in 512-byte sectors): "
2639 					    "number of blocks\n");
2640 					dump_histogram(zb->zb_psize_histogram,
2641 					    PSIZE_HISTO_SIZE, 0);
2642 				}
2643 			}
2644 		}
2645 	}
2646 
2647 	(void) printf("\n");
2648 
2649 	if (leaks)
2650 		return (2);
2651 
2652 	if (zcb.zcb_haderrors)
2653 		return (3);
2654 
2655 	return (0);
2656 }
2657 
2658 typedef struct zdb_ddt_entry {
2659 	ddt_key_t	zdde_key;
2660 	uint64_t	zdde_ref_blocks;
2661 	uint64_t	zdde_ref_lsize;
2662 	uint64_t	zdde_ref_psize;
2663 	uint64_t	zdde_ref_dsize;
2664 	avl_node_t	zdde_node;
2665 } zdb_ddt_entry_t;
2666 
2667 /* ARGSUSED */
2668 static int
2669 zdb_ddt_add_cb(spa_t *spa, zilog_t *zilog, const blkptr_t *bp,
2670     const zbookmark_t *zb, const dnode_phys_t *dnp, void *arg)
2671 {
2672 	avl_tree_t *t = arg;
2673 	avl_index_t where;
2674 	zdb_ddt_entry_t *zdde, zdde_search;
2675 
2676 	if (bp == NULL)
2677 		return (0);
2678 
2679 	if (dump_opt['S'] > 1 && zb->zb_level == ZB_ROOT_LEVEL) {
2680 		(void) printf("traversing objset %llu, %llu objects, "
2681 		    "%lu blocks so far\n",
2682 		    (u_longlong_t)zb->zb_objset,
2683 		    (u_longlong_t)bp->blk_fill,
2684 		    avl_numnodes(t));
2685 	}
2686 
2687 	if (BP_IS_HOLE(bp) || BP_GET_CHECKSUM(bp) == ZIO_CHECKSUM_OFF ||
2688 	    BP_GET_LEVEL(bp) > 0 || DMU_OT_IS_METADATA(BP_GET_TYPE(bp)))
2689 		return (0);
2690 
2691 	ddt_key_fill(&zdde_search.zdde_key, bp);
2692 
2693 	zdde = avl_find(t, &zdde_search, &where);
2694 
2695 	if (zdde == NULL) {
2696 		zdde = umem_zalloc(sizeof (*zdde), UMEM_NOFAIL);
2697 		zdde->zdde_key = zdde_search.zdde_key;
2698 		avl_insert(t, zdde, where);
2699 	}
2700 
2701 	zdde->zdde_ref_blocks += 1;
2702 	zdde->zdde_ref_lsize += BP_GET_LSIZE(bp);
2703 	zdde->zdde_ref_psize += BP_GET_PSIZE(bp);
2704 	zdde->zdde_ref_dsize += bp_get_dsize_sync(spa, bp);
2705 
2706 	return (0);
2707 }
2708 
2709 static void
2710 dump_simulated_ddt(spa_t *spa)
2711 {
2712 	avl_tree_t t;
2713 	void *cookie = NULL;
2714 	zdb_ddt_entry_t *zdde;
2715 	ddt_histogram_t ddh_total = { 0 };
2716 	ddt_stat_t dds_total = { 0 };
2717 
2718 	avl_create(&t, ddt_entry_compare,
2719 	    sizeof (zdb_ddt_entry_t), offsetof(zdb_ddt_entry_t, zdde_node));
2720 
2721 	spa_config_enter(spa, SCL_CONFIG, FTAG, RW_READER);
2722 
2723 	(void) traverse_pool(spa, 0, TRAVERSE_PRE | TRAVERSE_PREFETCH_METADATA,
2724 	    zdb_ddt_add_cb, &t);
2725 
2726 	spa_config_exit(spa, SCL_CONFIG, FTAG);
2727 
2728 	while ((zdde = avl_destroy_nodes(&t, &cookie)) != NULL) {
2729 		ddt_stat_t dds;
2730 		uint64_t refcnt = zdde->zdde_ref_blocks;
2731 		ASSERT(refcnt != 0);
2732 
2733 		dds.dds_blocks = zdde->zdde_ref_blocks / refcnt;
2734 		dds.dds_lsize = zdde->zdde_ref_lsize / refcnt;
2735 		dds.dds_psize = zdde->zdde_ref_psize / refcnt;
2736 		dds.dds_dsize = zdde->zdde_ref_dsize / refcnt;
2737 
2738 		dds.dds_ref_blocks = zdde->zdde_ref_blocks;
2739 		dds.dds_ref_lsize = zdde->zdde_ref_lsize;
2740 		dds.dds_ref_psize = zdde->zdde_ref_psize;
2741 		dds.dds_ref_dsize = zdde->zdde_ref_dsize;
2742 
2743 		ddt_stat_add(&ddh_total.ddh_stat[highbit(refcnt) - 1], &dds, 0);
2744 
2745 		umem_free(zdde, sizeof (*zdde));
2746 	}
2747 
2748 	avl_destroy(&t);
2749 
2750 	ddt_histogram_stat(&dds_total, &ddh_total);
2751 
2752 	(void) printf("Simulated DDT histogram:\n");
2753 
2754 	zpool_dump_ddt(&dds_total, &ddh_total);
2755 
2756 	dump_dedup_ratio(&dds_total);
2757 }
2758 
2759 static void
2760 dump_zpool(spa_t *spa)
2761 {
2762 	dsl_pool_t *dp = spa_get_dsl(spa);
2763 	int rc = 0;
2764 
2765 	if (dump_opt['S']) {
2766 		dump_simulated_ddt(spa);
2767 		return;
2768 	}
2769 
2770 	if (!dump_opt['e'] && dump_opt['C'] > 1) {
2771 		(void) printf("\nCached configuration:\n");
2772 		dump_nvlist(spa->spa_config, 8);
2773 	}
2774 
2775 	if (dump_opt['C'])
2776 		dump_config(spa);
2777 
2778 	if (dump_opt['u'])
2779 		dump_uberblock(&spa->spa_uberblock, "\nUberblock:\n", "\n");
2780 
2781 	if (dump_opt['D'])
2782 		dump_all_ddts(spa);
2783 
2784 	if (dump_opt['d'] > 2 || dump_opt['m'])
2785 		dump_metaslabs(spa);
2786 
2787 	if (dump_opt['d'] || dump_opt['i']) {
2788 		dump_dir(dp->dp_meta_objset);
2789 		if (dump_opt['d'] >= 3) {
2790 			dump_bpobj(&spa->spa_deferred_bpobj,
2791 			    "Deferred frees", 0);
2792 			if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
2793 				dump_bpobj(&spa->spa_dsl_pool->dp_free_bpobj,
2794 				    "Pool snapshot frees", 0);
2795 			}
2796 
2797 			if (spa_feature_is_active(spa,
2798 			    SPA_FEATURE_ASYNC_DESTROY)) {
2799 				dump_bptree(spa->spa_meta_objset,
2800 				    spa->spa_dsl_pool->dp_bptree_obj,
2801 				    "Pool dataset frees");
2802 			}
2803 			dump_dtl(spa->spa_root_vdev, 0);
2804 		}
2805 		(void) dmu_objset_find(spa_name(spa), dump_one_dir,
2806 		    NULL, DS_FIND_SNAPSHOTS | DS_FIND_CHILDREN);
2807 	}
2808 	if (dump_opt['b'] || dump_opt['c'])
2809 		rc = dump_block_stats(spa);
2810 
2811 	if (rc == 0)
2812 		rc = verify_spacemap_refcounts(spa);
2813 
2814 	if (dump_opt['s'])
2815 		show_pool_stats(spa);
2816 
2817 	if (dump_opt['h'])
2818 		dump_history(spa);
2819 
2820 	if (rc != 0)
2821 		exit(rc);
2822 }
2823 
2824 #define	ZDB_FLAG_CHECKSUM	0x0001
2825 #define	ZDB_FLAG_DECOMPRESS	0x0002
2826 #define	ZDB_FLAG_BSWAP		0x0004
2827 #define	ZDB_FLAG_GBH		0x0008
2828 #define	ZDB_FLAG_INDIRECT	0x0010
2829 #define	ZDB_FLAG_PHYS		0x0020
2830 #define	ZDB_FLAG_RAW		0x0040
2831 #define	ZDB_FLAG_PRINT_BLKPTR	0x0080
2832 
2833 int flagbits[256];
2834 
2835 static void
2836 zdb_print_blkptr(blkptr_t *bp, int flags)
2837 {
2838 	char blkbuf[BP_SPRINTF_LEN];
2839 
2840 	if (flags & ZDB_FLAG_BSWAP)
2841 		byteswap_uint64_array((void *)bp, sizeof (blkptr_t));
2842 
2843 	sprintf_blkptr(blkbuf, bp);
2844 	(void) printf("%s\n", blkbuf);
2845 }
2846 
2847 static void
2848 zdb_dump_indirect(blkptr_t *bp, int nbps, int flags)
2849 {
2850 	int i;
2851 
2852 	for (i = 0; i < nbps; i++)
2853 		zdb_print_blkptr(&bp[i], flags);
2854 }
2855 
2856 static void
2857 zdb_dump_gbh(void *buf, int flags)
2858 {
2859 	zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags);
2860 }
2861 
2862 static void
2863 zdb_dump_block_raw(void *buf, uint64_t size, int flags)
2864 {
2865 	if (flags & ZDB_FLAG_BSWAP)
2866 		byteswap_uint64_array(buf, size);
2867 	(void) write(1, buf, size);
2868 }
2869 
2870 static void
2871 zdb_dump_block(char *label, void *buf, uint64_t size, int flags)
2872 {
2873 	uint64_t *d = (uint64_t *)buf;
2874 	int nwords = size / sizeof (uint64_t);
2875 	int do_bswap = !!(flags & ZDB_FLAG_BSWAP);
2876 	int i, j;
2877 	char *hdr, *c;
2878 
2879 
2880 	if (do_bswap)
2881 		hdr = " 7 6 5 4 3 2 1 0   f e d c b a 9 8";
2882 	else
2883 		hdr = " 0 1 2 3 4 5 6 7   8 9 a b c d e f";
2884 
2885 	(void) printf("\n%s\n%6s   %s  0123456789abcdef\n", label, "", hdr);
2886 
2887 	for (i = 0; i < nwords; i += 2) {
2888 		(void) printf("%06llx:  %016llx  %016llx  ",
2889 		    (u_longlong_t)(i * sizeof (uint64_t)),
2890 		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]),
2891 		    (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1]));
2892 
2893 		c = (char *)&d[i];
2894 		for (j = 0; j < 2 * sizeof (uint64_t); j++)
2895 			(void) printf("%c", isprint(c[j]) ? c[j] : '.');
2896 		(void) printf("\n");
2897 	}
2898 }
2899 
2900 /*
2901  * There are two acceptable formats:
2902  *	leaf_name	  - For example: c1t0d0 or /tmp/ztest.0a
2903  *	child[.child]*    - For example: 0.1.1
2904  *
2905  * The second form can be used to specify arbitrary vdevs anywhere
2906  * in the heirarchy.  For example, in a pool with a mirror of
2907  * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 .
2908  */
2909 static vdev_t *
2910 zdb_vdev_lookup(vdev_t *vdev, char *path)
2911 {
2912 	char *s, *p, *q;
2913 	int i;
2914 
2915 	if (vdev == NULL)
2916 		return (NULL);
2917 
2918 	/* First, assume the x.x.x.x format */
2919 	i = (int)strtoul(path, &s, 10);
2920 	if (s == path || (s && *s != '.' && *s != '\0'))
2921 		goto name;
2922 	if (i < 0 || i >= vdev->vdev_children)
2923 		return (NULL);
2924 
2925 	vdev = vdev->vdev_child[i];
2926 	if (*s == '\0')
2927 		return (vdev);
2928 	return (zdb_vdev_lookup(vdev, s+1));
2929 
2930 name:
2931 	for (i = 0; i < vdev->vdev_children; i++) {
2932 		vdev_t *vc = vdev->vdev_child[i];
2933 
2934 		if (vc->vdev_path == NULL) {
2935 			vc = zdb_vdev_lookup(vc, path);
2936 			if (vc == NULL)
2937 				continue;
2938 			else
2939 				return (vc);
2940 		}
2941 
2942 		p = strrchr(vc->vdev_path, '/');
2943 		p = p ? p + 1 : vc->vdev_path;
2944 		q = &vc->vdev_path[strlen(vc->vdev_path) - 2];
2945 
2946 		if (strcmp(vc->vdev_path, path) == 0)
2947 			return (vc);
2948 		if (strcmp(p, path) == 0)
2949 			return (vc);
2950 		if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0)
2951 			return (vc);
2952 	}
2953 
2954 	return (NULL);
2955 }
2956 
2957 /*
2958  * Read a block from a pool and print it out.  The syntax of the
2959  * block descriptor is:
2960  *
2961  *	pool:vdev_specifier:offset:size[:flags]
2962  *
2963  *	pool           - The name of the pool you wish to read from
2964  *	vdev_specifier - Which vdev (see comment for zdb_vdev_lookup)
2965  *	offset         - offset, in hex, in bytes
2966  *	size           - Amount of data to read, in hex, in bytes
2967  *	flags          - A string of characters specifying options
2968  *		 b: Decode a blkptr at given offset within block
2969  *		*c: Calculate and display checksums
2970  *		 d: Decompress data before dumping
2971  *		 e: Byteswap data before dumping
2972  *		 g: Display data as a gang block header
2973  *		 i: Display as an indirect block
2974  *		 p: Do I/O to physical offset
2975  *		 r: Dump raw data to stdout
2976  *
2977  *              * = not yet implemented
2978  */
2979 static void
2980 zdb_read_block(char *thing, spa_t *spa)
2981 {
2982 	blkptr_t blk, *bp = &blk;
2983 	dva_t *dva = bp->blk_dva;
2984 	int flags = 0;
2985 	uint64_t offset = 0, size = 0, psize = 0, lsize = 0, blkptr_offset = 0;
2986 	zio_t *zio;
2987 	vdev_t *vd;
2988 	void *pbuf, *lbuf, *buf;
2989 	char *s, *p, *dup, *vdev, *flagstr;
2990 	int i, error;
2991 
2992 	dup = strdup(thing);
2993 	s = strtok(dup, ":");
2994 	vdev = s ? s : "";
2995 	s = strtok(NULL, ":");
2996 	offset = strtoull(s ? s : "", NULL, 16);
2997 	s = strtok(NULL, ":");
2998 	size = strtoull(s ? s : "", NULL, 16);
2999 	s = strtok(NULL, ":");
3000 	flagstr = s ? s : "";
3001 
3002 	s = NULL;
3003 	if (size == 0)
3004 		s = "size must not be zero";
3005 	if (!IS_P2ALIGNED(size, DEV_BSIZE))
3006 		s = "size must be a multiple of sector size";
3007 	if (!IS_P2ALIGNED(offset, DEV_BSIZE))
3008 		s = "offset must be a multiple of sector size";
3009 	if (s) {
3010 		(void) printf("Invalid block specifier: %s  - %s\n", thing, s);
3011 		free(dup);
3012 		return;
3013 	}
3014 
3015 	for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) {
3016 		for (i = 0; flagstr[i]; i++) {
3017 			int bit = flagbits[(uchar_t)flagstr[i]];
3018 
3019 			if (bit == 0) {
3020 				(void) printf("***Invalid flag: %c\n",
3021 				    flagstr[i]);
3022 				continue;
3023 			}
3024 			flags |= bit;
3025 
3026 			/* If it's not something with an argument, keep going */
3027 			if ((bit & (ZDB_FLAG_CHECKSUM |
3028 			    ZDB_FLAG_PRINT_BLKPTR)) == 0)
3029 				continue;
3030 
3031 			p = &flagstr[i + 1];
3032 			if (bit == ZDB_FLAG_PRINT_BLKPTR)
3033 				blkptr_offset = strtoull(p, &p, 16);
3034 			if (*p != ':' && *p != '\0') {
3035 				(void) printf("***Invalid flag arg: '%s'\n", s);
3036 				free(dup);
3037 				return;
3038 			}
3039 		}
3040 	}
3041 
3042 	vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev);
3043 	if (vd == NULL) {
3044 		(void) printf("***Invalid vdev: %s\n", vdev);
3045 		free(dup);
3046 		return;
3047 	} else {
3048 		if (vd->vdev_path)
3049 			(void) fprintf(stderr, "Found vdev: %s\n",
3050 			    vd->vdev_path);
3051 		else
3052 			(void) fprintf(stderr, "Found vdev type: %s\n",
3053 			    vd->vdev_ops->vdev_op_type);
3054 	}
3055 
3056 	psize = size;
3057 	lsize = size;
3058 
3059 	pbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3060 	lbuf = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3061 
3062 	BP_ZERO(bp);
3063 
3064 	DVA_SET_VDEV(&dva[0], vd->vdev_id);
3065 	DVA_SET_OFFSET(&dva[0], offset);
3066 	DVA_SET_GANG(&dva[0], !!(flags & ZDB_FLAG_GBH));
3067 	DVA_SET_ASIZE(&dva[0], vdev_psize_to_asize(vd, psize));
3068 
3069 	BP_SET_BIRTH(bp, TXG_INITIAL, TXG_INITIAL);
3070 
3071 	BP_SET_LSIZE(bp, lsize);
3072 	BP_SET_PSIZE(bp, psize);
3073 	BP_SET_COMPRESS(bp, ZIO_COMPRESS_OFF);
3074 	BP_SET_CHECKSUM(bp, ZIO_CHECKSUM_OFF);
3075 	BP_SET_TYPE(bp, DMU_OT_NONE);
3076 	BP_SET_LEVEL(bp, 0);
3077 	BP_SET_DEDUP(bp, 0);
3078 	BP_SET_BYTEORDER(bp, ZFS_HOST_BYTEORDER);
3079 
3080 	spa_config_enter(spa, SCL_STATE, FTAG, RW_READER);
3081 	zio = zio_root(spa, NULL, NULL, 0);
3082 
3083 	if (vd == vd->vdev_top) {
3084 		/*
3085 		 * Treat this as a normal block read.
3086 		 */
3087 		zio_nowait(zio_read(zio, spa, bp, pbuf, psize, NULL, NULL,
3088 		    ZIO_PRIORITY_SYNC_READ,
3089 		    ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL));
3090 	} else {
3091 		/*
3092 		 * Treat this as a vdev child I/O.
3093 		 */
3094 		zio_nowait(zio_vdev_child_io(zio, bp, vd, offset, pbuf, psize,
3095 		    ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ,
3096 		    ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE |
3097 		    ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY |
3098 		    ZIO_FLAG_CANFAIL | ZIO_FLAG_RAW, NULL, NULL));
3099 	}
3100 
3101 	error = zio_wait(zio);
3102 	spa_config_exit(spa, SCL_STATE, FTAG);
3103 
3104 	if (error) {
3105 		(void) printf("Read of %s failed, error: %d\n", thing, error);
3106 		goto out;
3107 	}
3108 
3109 	if (flags & ZDB_FLAG_DECOMPRESS) {
3110 		/*
3111 		 * We don't know how the data was compressed, so just try
3112 		 * every decompress function at every inflated blocksize.
3113 		 */
3114 		enum zio_compress c;
3115 		void *pbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3116 		void *lbuf2 = umem_alloc(SPA_MAXBLOCKSIZE, UMEM_NOFAIL);
3117 
3118 		bcopy(pbuf, pbuf2, psize);
3119 
3120 		VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf + psize,
3121 		    SPA_MAXBLOCKSIZE - psize) == 0);
3122 
3123 		VERIFY(random_get_pseudo_bytes((uint8_t *)pbuf2 + psize,
3124 		    SPA_MAXBLOCKSIZE - psize) == 0);
3125 
3126 		for (lsize = SPA_MAXBLOCKSIZE; lsize > psize;
3127 		    lsize -= SPA_MINBLOCKSIZE) {
3128 			for (c = 0; c < ZIO_COMPRESS_FUNCTIONS; c++) {
3129 				if (zio_decompress_data(c, pbuf, lbuf,
3130 				    psize, lsize) == 0 &&
3131 				    zio_decompress_data(c, pbuf2, lbuf2,
3132 				    psize, lsize) == 0 &&
3133 				    bcmp(lbuf, lbuf2, lsize) == 0)
3134 					break;
3135 			}
3136 			if (c != ZIO_COMPRESS_FUNCTIONS)
3137 				break;
3138 			lsize -= SPA_MINBLOCKSIZE;
3139 		}
3140 
3141 		umem_free(pbuf2, SPA_MAXBLOCKSIZE);
3142 		umem_free(lbuf2, SPA_MAXBLOCKSIZE);
3143 
3144 		if (lsize <= psize) {
3145 			(void) printf("Decompress of %s failed\n", thing);
3146 			goto out;
3147 		}
3148 		buf = lbuf;
3149 		size = lsize;
3150 	} else {
3151 		buf = pbuf;
3152 		size = psize;
3153 	}
3154 
3155 	if (flags & ZDB_FLAG_PRINT_BLKPTR)
3156 		zdb_print_blkptr((blkptr_t *)(void *)
3157 		    ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags);
3158 	else if (flags & ZDB_FLAG_RAW)
3159 		zdb_dump_block_raw(buf, size, flags);
3160 	else if (flags & ZDB_FLAG_INDIRECT)
3161 		zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t),
3162 		    flags);
3163 	else if (flags & ZDB_FLAG_GBH)
3164 		zdb_dump_gbh(buf, flags);
3165 	else
3166 		zdb_dump_block(thing, buf, size, flags);
3167 
3168 out:
3169 	umem_free(pbuf, SPA_MAXBLOCKSIZE);
3170 	umem_free(lbuf, SPA_MAXBLOCKSIZE);
3171 	free(dup);
3172 }
3173 
3174 static boolean_t
3175 pool_match(nvlist_t *cfg, char *tgt)
3176 {
3177 	uint64_t v, guid = strtoull(tgt, NULL, 0);
3178 	char *s;
3179 
3180 	if (guid != 0) {
3181 		if (nvlist_lookup_uint64(cfg, ZPOOL_CONFIG_POOL_GUID, &v) == 0)
3182 			return (v == guid);
3183 	} else {
3184 		if (nvlist_lookup_string(cfg, ZPOOL_CONFIG_POOL_NAME, &s) == 0)
3185 			return (strcmp(s, tgt) == 0);
3186 	}
3187 	return (B_FALSE);
3188 }
3189 
3190 static char *
3191 find_zpool(char **target, nvlist_t **configp, int dirc, char **dirv)
3192 {
3193 	nvlist_t *pools;
3194 	nvlist_t *match = NULL;
3195 	char *name = NULL;
3196 	char *sepp = NULL;
3197 	char sep;
3198 	int count = 0;
3199 	importargs_t args = { 0 };
3200 
3201 	args.paths = dirc;
3202 	args.path = dirv;
3203 	args.can_be_active = B_TRUE;
3204 
3205 	if ((sepp = strpbrk(*target, "/@")) != NULL) {
3206 		sep = *sepp;
3207 		*sepp = '\0';
3208 	}
3209 
3210 	pools = zpool_search_import(g_zfs, &args);
3211 
3212 	if (pools != NULL) {
3213 		nvpair_t *elem = NULL;
3214 		while ((elem = nvlist_next_nvpair(pools, elem)) != NULL) {
3215 			verify(nvpair_value_nvlist(elem, configp) == 0);
3216 			if (pool_match(*configp, *target)) {
3217 				count++;
3218 				if (match != NULL) {
3219 					/* print previously found config */
3220 					if (name != NULL) {
3221 						(void) printf("%s\n", name);
3222 						dump_nvlist(match, 8);
3223 						name = NULL;
3224 					}
3225 					(void) printf("%s\n",
3226 					    nvpair_name(elem));
3227 					dump_nvlist(*configp, 8);
3228 				} else {
3229 					match = *configp;
3230 					name = nvpair_name(elem);
3231 				}
3232 			}
3233 		}
3234 	}
3235 	if (count > 1)
3236 		(void) fatal("\tMatched %d pools - use pool GUID "
3237 		    "instead of pool name or \n"
3238 		    "\tpool name part of a dataset name to select pool", count);
3239 
3240 	if (sepp)
3241 		*sepp = sep;
3242 	/*
3243 	 * If pool GUID was specified for pool id, replace it with pool name
3244 	 */
3245 	if (name && (strstr(*target, name) != *target)) {
3246 		int sz = 1 + strlen(name) + ((sepp) ? strlen(sepp) : 0);
3247 
3248 		*target = umem_alloc(sz, UMEM_NOFAIL);
3249 		(void) snprintf(*target, sz, "%s%s", name, sepp ? sepp : "");
3250 	}
3251 
3252 	*configp = name ? match : NULL;
3253 
3254 	return (name);
3255 }
3256 
3257 int
3258 main(int argc, char **argv)
3259 {
3260 	int i, c;
3261 	struct rlimit rl = { 1024, 1024 };
3262 	spa_t *spa = NULL;
3263 	objset_t *os = NULL;
3264 	int dump_all = 1;
3265 	int verbose = 0;
3266 	int error = 0;
3267 	char **searchdirs = NULL;
3268 	int nsearch = 0;
3269 	char *target;
3270 	nvlist_t *policy = NULL;
3271 	uint64_t max_txg = UINT64_MAX;
3272 	int rewind = ZPOOL_NEVER_REWIND;
3273 
3274 	(void) setrlimit(RLIMIT_NOFILE, &rl);
3275 	(void) enable_extended_FILE_stdio(-1, -1);
3276 
3277 	dprintf_setup(&argc, argv);
3278 
3279 	while ((c = getopt(argc, argv, "bcdhilmM:suCDRSAFLXevp:t:U:P")) != -1) {
3280 		switch (c) {
3281 		case 'b':
3282 		case 'c':
3283 		case 'd':
3284 		case 'h':
3285 		case 'i':
3286 		case 'l':
3287 		case 'm':
3288 		case 's':
3289 		case 'u':
3290 		case 'C':
3291 		case 'D':
3292 		case 'R':
3293 		case 'S':
3294 			dump_opt[c]++;
3295 			dump_all = 0;
3296 			break;
3297 		case 'A':
3298 		case 'F':
3299 		case 'L':
3300 		case 'X':
3301 		case 'e':
3302 		case 'P':
3303 			dump_opt[c]++;
3304 			break;
3305 		case 'v':
3306 			verbose++;
3307 			break;
3308 		case 'M':
3309 			max_inflight = strtoull(optarg, NULL, 0);
3310 			if (max_inflight == 0) {
3311 				(void) fprintf(stderr, "maximum number "
3312 				    "of inflight I/Os must be greater "
3313 				    "than 0\n");
3314 				usage();
3315 			}
3316 			break;
3317 		case 'p':
3318 			if (searchdirs == NULL) {
3319 				searchdirs = umem_alloc(sizeof (char *),
3320 				    UMEM_NOFAIL);
3321 			} else {
3322 				char **tmp = umem_alloc((nsearch + 1) *
3323 				    sizeof (char *), UMEM_NOFAIL);
3324 				bcopy(searchdirs, tmp, nsearch *
3325 				    sizeof (char *));
3326 				umem_free(searchdirs,
3327 				    nsearch * sizeof (char *));
3328 				searchdirs = tmp;
3329 			}
3330 			searchdirs[nsearch++] = optarg;
3331 			break;
3332 		case 't':
3333 			max_txg = strtoull(optarg, NULL, 0);
3334 			if (max_txg < TXG_INITIAL) {
3335 				(void) fprintf(stderr, "incorrect txg "
3336 				    "specified: %s\n", optarg);
3337 				usage();
3338 			}
3339 			break;
3340 		case 'U':
3341 			spa_config_path = optarg;
3342 			break;
3343 		default:
3344 			usage();
3345 			break;
3346 		}
3347 	}
3348 
3349 	if (!dump_opt['e'] && searchdirs != NULL) {
3350 		(void) fprintf(stderr, "-p option requires use of -e\n");
3351 		usage();
3352 	}
3353 
3354 	kernel_init(FREAD);
3355 	g_zfs = libzfs_init();
3356 	ASSERT(g_zfs != NULL);
3357 
3358 	if (dump_all)
3359 		verbose = MAX(verbose, 1);
3360 
3361 	for (c = 0; c < 256; c++) {
3362 		if (dump_all && !strchr("elAFLRSXP", c))
3363 			dump_opt[c] = 1;
3364 		if (dump_opt[c])
3365 			dump_opt[c] += verbose;
3366 	}
3367 
3368 	aok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
3369 	zfs_recover = (dump_opt['A'] > 1);
3370 
3371 	argc -= optind;
3372 	argv += optind;
3373 
3374 	if (argc < 2 && dump_opt['R'])
3375 		usage();
3376 	if (argc < 1) {
3377 		if (!dump_opt['e'] && dump_opt['C']) {
3378 			dump_cachefile(spa_config_path);
3379 			return (0);
3380 		}
3381 		usage();
3382 	}
3383 
3384 	if (dump_opt['l']) {
3385 		dump_label(argv[0]);
3386 		return (0);
3387 	}
3388 
3389 	if (dump_opt['X'] || dump_opt['F'])
3390 		rewind = ZPOOL_DO_REWIND |
3391 		    (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0);
3392 
3393 	if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 ||
3394 	    nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 ||
3395 	    nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0)
3396 		fatal("internal error: %s", strerror(ENOMEM));
3397 
3398 	error = 0;
3399 	target = argv[0];
3400 
3401 	if (dump_opt['e']) {
3402 		nvlist_t *cfg = NULL;
3403 		char *name = find_zpool(&target, &cfg, nsearch, searchdirs);
3404 
3405 		error = ENOENT;
3406 		if (name) {
3407 			if (dump_opt['C'] > 1) {
3408 				(void) printf("\nConfiguration for import:\n");
3409 				dump_nvlist(cfg, 8);
3410 			}
3411 			if (nvlist_add_nvlist(cfg,
3412 			    ZPOOL_REWIND_POLICY, policy) != 0) {
3413 				fatal("can't open '%s': %s",
3414 				    target, strerror(ENOMEM));
3415 			}
3416 			if ((error = spa_import(name, cfg, NULL,
3417 			    ZFS_IMPORT_MISSING_LOG)) != 0) {
3418 				error = spa_import(name, cfg, NULL,
3419 				    ZFS_IMPORT_VERBATIM);
3420 			}
3421 		}
3422 	}
3423 
3424 	if (error == 0) {
3425 		if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
3426 			error = spa_open_rewind(target, &spa, FTAG, policy,
3427 			    NULL);
3428 			if (error) {
3429 				/*
3430 				 * If we're missing the log device then
3431 				 * try opening the pool after clearing the
3432 				 * log state.
3433 				 */
3434 				mutex_enter(&spa_namespace_lock);
3435 				if ((spa = spa_lookup(target)) != NULL &&
3436 				    spa->spa_log_state == SPA_LOG_MISSING) {
3437 					spa->spa_log_state = SPA_LOG_CLEAR;
3438 					error = 0;
3439 				}
3440 				mutex_exit(&spa_namespace_lock);
3441 
3442 				if (!error) {
3443 					error = spa_open_rewind(target, &spa,
3444 					    FTAG, policy, NULL);
3445 				}
3446 			}
3447 		} else {
3448 			error = dmu_objset_own(target, DMU_OST_ANY,
3449 			    B_TRUE, FTAG, &os);
3450 		}
3451 	}
3452 	nvlist_free(policy);
3453 
3454 	if (error)
3455 		fatal("can't open '%s': %s", target, strerror(error));
3456 
3457 	argv++;
3458 	argc--;
3459 	if (!dump_opt['R']) {
3460 		if (argc > 0) {
3461 			zopt_objects = argc;
3462 			zopt_object = calloc(zopt_objects, sizeof (uint64_t));
3463 			for (i = 0; i < zopt_objects; i++) {
3464 				errno = 0;
3465 				zopt_object[i] = strtoull(argv[i], NULL, 0);
3466 				if (zopt_object[i] == 0 && errno != 0)
3467 					fatal("bad number %s: %s",
3468 					    argv[i], strerror(errno));
3469 			}
3470 		}
3471 		if (os != NULL) {
3472 			dump_dir(os);
3473 		} else if (zopt_objects > 0 && !dump_opt['m']) {
3474 			dump_dir(spa->spa_meta_objset);
3475 		} else {
3476 			dump_zpool(spa);
3477 		}
3478 	} else {
3479 		flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR;
3480 		flagbits['c'] = ZDB_FLAG_CHECKSUM;
3481 		flagbits['d'] = ZDB_FLAG_DECOMPRESS;
3482 		flagbits['e'] = ZDB_FLAG_BSWAP;
3483 		flagbits['g'] = ZDB_FLAG_GBH;
3484 		flagbits['i'] = ZDB_FLAG_INDIRECT;
3485 		flagbits['p'] = ZDB_FLAG_PHYS;
3486 		flagbits['r'] = ZDB_FLAG_RAW;
3487 
3488 		for (i = 0; i < argc; i++)
3489 			zdb_read_block(argv[i], spa);
3490 	}
3491 
3492 	(os != NULL) ? dmu_objset_disown(os, FTAG) : spa_close(spa, FTAG);
3493 
3494 	fuid_table_destroy();
3495 	sa_loaded = B_FALSE;
3496 
3497 	libzfs_fini(g_zfs);
3498 	kernel_fini();
3499 
3500 	return (0);
3501 }
3502