/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #pragma ident "%Z%%M% %I% %E% SMI" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include const char cmdname[] = "zdb"; uint8_t dump_opt[256]; typedef void object_viewer_t(objset_t *, uint64_t, void *data, size_t size); extern void dump_intent_log(zilog_t *); uint64_t *zopt_object = NULL; int zopt_objects = 0; int zdb_advance = ADVANCE_PRE; zbookmark_t zdb_noread = { 0, 0, ZB_NO_LEVEL, 0 }; /* * These libumem hooks provide a reasonable set of defaults for the allocator's * debugging facilities. */ const char * _umem_debug_init() { return ("default,verbose"); /* $UMEM_DEBUG setting */ } const char * _umem_logging_init(void) { return ("fail,contents"); /* $UMEM_LOGGING setting */ } static void usage(void) { (void) fprintf(stderr, "Usage: %s [-udibcsvLU] [-O order] [-B os:obj:level:blkid] " "dataset [object...]\n" " %s -C [pool]\n" " %s -l dev\n" " %s -R vdev:offset:size:flags\n", cmdname, cmdname, cmdname, cmdname); (void) fprintf(stderr, " -u uberblock\n"); (void) fprintf(stderr, " -d datasets\n"); (void) fprintf(stderr, " -C cached pool configuration\n"); (void) fprintf(stderr, " -i intent logs\n"); (void) fprintf(stderr, " -b block statistics\n"); (void) fprintf(stderr, " -c checksum all data blocks\n"); (void) fprintf(stderr, " -s report stats on zdb's I/O\n"); (void) fprintf(stderr, " -v verbose (applies to all others)\n"); (void) fprintf(stderr, " -l dump label contents\n"); (void) fprintf(stderr, " -L live pool (allows some errors)\n"); (void) fprintf(stderr, " -O [!] " "visitation order\n"); (void) fprintf(stderr, " -U use zpool.cache in /tmp\n"); (void) fprintf(stderr, " -B objset:object:level:blkid -- " "simulate bad block\n"); (void) fprintf(stderr, " -R read and display block from a" "device\n"); (void) fprintf(stderr, "Specify an option more than once (e.g. -bb) " "to make only that option verbose\n"); (void) fprintf(stderr, "Default is to dump everything non-verbosely\n"); exit(1); } static void fatal(const char *fmt, ...) { va_list ap; va_start(ap, fmt); (void) fprintf(stderr, "%s: ", cmdname); (void) vfprintf(stderr, fmt, ap); va_end(ap); (void) fprintf(stderr, "\n"); exit(1); } static void dump_nvlist(nvlist_t *list, int indent) { nvpair_t *elem = NULL; while ((elem = nvlist_next_nvpair(list, elem)) != NULL) { switch (nvpair_type(elem)) { case DATA_TYPE_STRING: { char *value; VERIFY(nvpair_value_string(elem, &value) == 0); (void) printf("%*s%s='%s'\n", indent, "", nvpair_name(elem), value); } break; case DATA_TYPE_UINT64: { uint64_t value; VERIFY(nvpair_value_uint64(elem, &value) == 0); (void) printf("%*s%s=%llu\n", indent, "", nvpair_name(elem), (u_longlong_t)value); } break; case DATA_TYPE_NVLIST: { nvlist_t *value; VERIFY(nvpair_value_nvlist(elem, &value) == 0); (void) printf("%*s%s\n", indent, "", nvpair_name(elem)); dump_nvlist(value, indent + 4); } break; case DATA_TYPE_NVLIST_ARRAY: { nvlist_t **value; uint_t c, count; VERIFY(nvpair_value_nvlist_array(elem, &value, &count) == 0); for (c = 0; c < count; c++) { (void) printf("%*s%s[%u]\n", indent, "", nvpair_name(elem), c); dump_nvlist(value[c], indent + 8); } } break; default: (void) printf("bad config type %d for %s\n", nvpair_type(elem), nvpair_name(elem)); } } } /* ARGSUSED */ static void dump_packed_nvlist(objset_t *os, uint64_t object, void *data, size_t size) { nvlist_t *nv; size_t nvsize = *(uint64_t *)data; char *packed = umem_alloc(nvsize, UMEM_NOFAIL); VERIFY(0 == dmu_read(os, object, 0, nvsize, packed)); VERIFY(nvlist_unpack(packed, nvsize, &nv, 0) == 0); umem_free(packed, nvsize); dump_nvlist(nv, 8); nvlist_free(nv); } const char dump_zap_stars[] = "****************************************"; const int dump_zap_width = sizeof (dump_zap_stars) - 1; static void dump_zap_histogram(uint64_t histo[ZAP_HISTOGRAM_SIZE]) { int i; int minidx = ZAP_HISTOGRAM_SIZE - 1; int maxidx = 0; uint64_t max = 0; for (i = 0; i < ZAP_HISTOGRAM_SIZE; i++) { if (histo[i] > max) max = histo[i]; if (histo[i] > 0 && i > maxidx) maxidx = i; if (histo[i] > 0 && i < minidx) minidx = i; } if (max < dump_zap_width) max = dump_zap_width; for (i = minidx; i <= maxidx; i++) (void) printf("\t\t\t%u: %6llu %s\n", i, (u_longlong_t)histo[i], &dump_zap_stars[(max - histo[i]) * dump_zap_width / max]); } static void dump_zap_stats(objset_t *os, uint64_t object) { int error; zap_stats_t zs; error = zap_get_stats(os, object, &zs); if (error) return; if (zs.zs_ptrtbl_len == 0) { ASSERT(zs.zs_num_blocks == 1); (void) printf("\tmicrozap: %llu bytes, %llu entries\n", (u_longlong_t)zs.zs_blocksize, (u_longlong_t)zs.zs_num_entries); return; } (void) printf("\tFat ZAP stats:\n"); (void) printf("\t\tPointer table:\n"); (void) printf("\t\t\t%llu elements\n", (u_longlong_t)zs.zs_ptrtbl_len); (void) printf("\t\t\tzt_blk: %llu\n", (u_longlong_t)zs.zs_ptrtbl_zt_blk); (void) printf("\t\t\tzt_numblks: %llu\n", (u_longlong_t)zs.zs_ptrtbl_zt_numblks); (void) printf("\t\t\tzt_shift: %llu\n", (u_longlong_t)zs.zs_ptrtbl_zt_shift); (void) printf("\t\t\tzt_blks_copied: %llu\n", (u_longlong_t)zs.zs_ptrtbl_blks_copied); (void) printf("\t\t\tzt_nextblk: %llu\n", (u_longlong_t)zs.zs_ptrtbl_nextblk); (void) printf("\t\tZAP entries: %llu\n", (u_longlong_t)zs.zs_num_entries); (void) printf("\t\tLeaf blocks: %llu\n", (u_longlong_t)zs.zs_num_leafs); (void) printf("\t\tTotal blocks: %llu\n", (u_longlong_t)zs.zs_num_blocks); (void) printf("\t\tzap_block_type: 0x%llx\n", (u_longlong_t)zs.zs_block_type); (void) printf("\t\tzap_magic: 0x%llx\n", (u_longlong_t)zs.zs_magic); (void) printf("\t\tzap_salt: 0x%llx\n", (u_longlong_t)zs.zs_salt); (void) printf("\t\tLeafs with 2^n pointers:\n"); dump_zap_histogram(zs.zs_leafs_with_2n_pointers); (void) printf("\t\tBlocks with n*5 entries:\n"); dump_zap_histogram(zs.zs_blocks_with_n5_entries); (void) printf("\t\tBlocks n/10 full:\n"); dump_zap_histogram(zs.zs_blocks_n_tenths_full); (void) printf("\t\tEntries with n chunks:\n"); dump_zap_histogram(zs.zs_entries_using_n_chunks); (void) printf("\t\tBuckets with n entries:\n"); dump_zap_histogram(zs.zs_buckets_with_n_entries); } /*ARGSUSED*/ static void dump_none(objset_t *os, uint64_t object, void *data, size_t size) { } /*ARGSUSED*/ void dump_uint8(objset_t *os, uint64_t object, void *data, size_t size) { } /*ARGSUSED*/ static void dump_uint64(objset_t *os, uint64_t object, void *data, size_t size) { } /*ARGSUSED*/ static void dump_zap(objset_t *os, uint64_t object, void *data, size_t size) { zap_cursor_t zc; zap_attribute_t attr; void *prop; int i; dump_zap_stats(os, object); (void) printf("\n"); for (zap_cursor_init(&zc, os, object); zap_cursor_retrieve(&zc, &attr) == 0; zap_cursor_advance(&zc)) { (void) printf("\t\t%s = ", attr.za_name); if (attr.za_num_integers == 0) { (void) printf("\n"); continue; } prop = umem_zalloc(attr.za_num_integers * attr.za_integer_length, UMEM_NOFAIL); (void) zap_lookup(os, object, attr.za_name, attr.za_integer_length, attr.za_num_integers, prop); if (attr.za_integer_length == 1) { (void) printf("%s", (char *)prop); } else { for (i = 0; i < attr.za_num_integers; i++) { switch (attr.za_integer_length) { case 2: (void) printf("%u ", ((uint16_t *)prop)[i]); break; case 4: (void) printf("%u ", ((uint32_t *)prop)[i]); break; case 8: (void) printf("%lld ", (u_longlong_t)((int64_t *)prop)[i]); break; } } } (void) printf("\n"); umem_free(prop, attr.za_num_integers * attr.za_integer_length); } zap_cursor_fini(&zc); } static void dump_spacemap(objset_t *os, space_map_obj_t *smo, space_map_t *sm) { uint64_t alloc, offset, entry; uint8_t mapshift = sm->sm_shift; uint64_t mapstart = sm->sm_start; char *ddata[] = { "ALLOC", "FREE", "CONDENSE", "INVALID" }; if (smo->smo_object == 0) return; /* * Print out the freelist entries in both encoded and decoded form. */ alloc = 0; for (offset = 0; offset < smo->smo_objsize; offset += sizeof (entry)) { VERIFY(0 == dmu_read(os, smo->smo_object, offset, sizeof (entry), &entry)); if (SM_DEBUG_DECODE(entry)) { (void) printf("\t\t[%4llu] %s: txg %llu, pass %llu\n", (u_longlong_t)(offset / sizeof (entry)), ddata[SM_DEBUG_ACTION_DECODE(entry)], SM_DEBUG_TXG_DECODE(entry), SM_DEBUG_SYNCPASS_DECODE(entry)); } else { (void) printf("\t\t[%4llu] %c range:" " %08llx-%08llx size: %06llx\n", (u_longlong_t)(offset / sizeof (entry)), SM_TYPE_DECODE(entry) == SM_ALLOC ? 'A' : 'F', (SM_OFFSET_DECODE(entry) << mapshift) + mapstart, (SM_OFFSET_DECODE(entry) << mapshift) + mapstart + (SM_RUN_DECODE(entry) << mapshift), (SM_RUN_DECODE(entry) << mapshift)); if (SM_TYPE_DECODE(entry) == SM_ALLOC) alloc += SM_RUN_DECODE(entry) << mapshift; else alloc -= SM_RUN_DECODE(entry) << mapshift; } } if (alloc != smo->smo_alloc) { (void) printf("space_map_object alloc (%llu) INCONSISTENT " "with space map summary (%llu)\n", (u_longlong_t)smo->smo_alloc, (u_longlong_t)alloc); } } static void dump_metaslab(metaslab_t *msp) { char freebuf[5]; space_map_obj_t *smo = &msp->ms_smo; vdev_t *vd = msp->ms_group->mg_vd; spa_t *spa = vd->vdev_spa; nicenum(msp->ms_map.sm_size - smo->smo_alloc, freebuf); if (dump_opt['d'] <= 5) { (void) printf("\t%10llx %10llu %5s\n", (u_longlong_t)msp->ms_map.sm_start, (u_longlong_t)smo->smo_object, freebuf); return; } (void) printf( "\tvdev %llu offset %08llx spacemap %4llu free %5s\n", (u_longlong_t)vd->vdev_id, (u_longlong_t)msp->ms_map.sm_start, (u_longlong_t)smo->smo_object, freebuf); ASSERT(msp->ms_map.sm_size == (1ULL << vd->vdev_ms_shift)); dump_spacemap(spa->spa_meta_objset, smo, &msp->ms_map); } static void dump_metaslabs(spa_t *spa) { vdev_t *rvd = spa->spa_root_vdev; vdev_t *vd; int c, m; (void) printf("\nMetaslabs:\n"); for (c = 0; c < rvd->vdev_children; c++) { vd = rvd->vdev_child[c]; spa_config_enter(spa, RW_READER, FTAG); (void) printf("\n vdev %llu = %s\n\n", (u_longlong_t)vd->vdev_id, vdev_description(vd)); spa_config_exit(spa, FTAG); if (dump_opt['d'] <= 5) { (void) printf("\t%10s %10s %5s\n", "offset", "spacemap", "free"); (void) printf("\t%10s %10s %5s\n", "------", "--------", "----"); } for (m = 0; m < vd->vdev_ms_count; m++) dump_metaslab(vd->vdev_ms[m]); (void) printf("\n"); } } static void dump_dtl(vdev_t *vd, int indent) { avl_tree_t *t = &vd->vdev_dtl_map.sm_root; spa_t *spa = vd->vdev_spa; space_seg_t *ss; vdev_t *pvd; int c; if (indent == 0) (void) printf("\nDirty time logs:\n\n"); spa_config_enter(spa, RW_READER, FTAG); (void) printf("\t%*s%s\n", indent, "", vdev_description(vd)); spa_config_exit(spa, FTAG); for (ss = avl_first(t); ss; ss = AVL_NEXT(t, ss)) { /* * Everything in this DTL must appear in all parent DTL unions. */ for (pvd = vd; pvd; pvd = pvd->vdev_parent) ASSERT(vdev_dtl_contains(&pvd->vdev_dtl_map, ss->ss_start, ss->ss_end - ss->ss_start)); (void) printf("\t%*soutage [%llu,%llu] length %llu\n", indent, "", (u_longlong_t)ss->ss_start, (u_longlong_t)ss->ss_end - 1, (u_longlong_t)ss->ss_end - ss->ss_start); } (void) printf("\n"); if (dump_opt['d'] > 5 && vd->vdev_children == 0) { dump_spacemap(vd->vdev_spa->spa_meta_objset, &vd->vdev_dtl, &vd->vdev_dtl_map); (void) printf("\n"); } for (c = 0; c < vd->vdev_children; c++) dump_dtl(vd->vdev_child[c], indent + 4); } /*ARGSUSED*/ static void dump_dnode(objset_t *os, uint64_t object, void *data, size_t size) { } static uint64_t blkid2offset(dnode_phys_t *dnp, int level, uint64_t blkid) { if (level < 0) return (blkid); return ((blkid << (level * (dnp->dn_indblkshift - SPA_BLKPTRSHIFT))) * dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT); } static void sprintf_blkptr_compact(char *blkbuf, blkptr_t *bp, int alldvas) { dva_t *dva = bp->blk_dva; int ndvas = alldvas ? BP_GET_NDVAS(bp) : 1; int i; blkbuf[0] = '\0'; for (i = 0; i < ndvas; i++) (void) sprintf(blkbuf + strlen(blkbuf), "%llu:%llx:%llx ", (u_longlong_t)DVA_GET_VDEV(&dva[i]), (u_longlong_t)DVA_GET_OFFSET(&dva[i]), (u_longlong_t)DVA_GET_ASIZE(&dva[i])); (void) sprintf(blkbuf + strlen(blkbuf), "%llxL/%llxP F=%llu B=%llu", (u_longlong_t)BP_GET_LSIZE(bp), (u_longlong_t)BP_GET_PSIZE(bp), (u_longlong_t)bp->blk_fill, (u_longlong_t)bp->blk_birth); } /* ARGSUSED */ static int zdb_indirect_cb(traverse_blk_cache_t *bc, spa_t *spa, void *a) { zbookmark_t *zb = &bc->bc_bookmark; blkptr_t *bp = &bc->bc_blkptr; void *data = bc->bc_data; dnode_phys_t *dnp = bc->bc_dnode; char blkbuf[BP_SPRINTF_LEN + 80]; int l; if (bc->bc_errno) { (void) sprintf(blkbuf, "Error %d reading <%llu, %llu, %lld, %llu>: ", bc->bc_errno, (u_longlong_t)zb->zb_objset, (u_longlong_t)zb->zb_object, (u_longlong_t)zb->zb_level, (u_longlong_t)zb->zb_blkid); goto out; } if (zb->zb_level == -1) { ASSERT3U(BP_GET_TYPE(bp), ==, DMU_OT_OBJSET); ASSERT3U(BP_GET_LEVEL(bp), ==, 0); } else { ASSERT3U(BP_GET_TYPE(bp), ==, dnp->dn_type); ASSERT3U(BP_GET_LEVEL(bp), ==, zb->zb_level); } if (zb->zb_level > 0) { uint64_t fill = 0; blkptr_t *bpx, *bpend; for (bpx = data, bpend = bpx + BP_GET_LSIZE(bp) / sizeof (*bpx); bpx < bpend; bpx++) { if (bpx->blk_birth != 0) { fill += bpx->blk_fill; } else { ASSERT(bpx->blk_fill == 0); } } ASSERT3U(fill, ==, bp->blk_fill); } if (zb->zb_level == 0 && dnp->dn_type == DMU_OT_DNODE) { uint64_t fill = 0; dnode_phys_t *dnx, *dnend; for (dnx = data, dnend = dnx + (BP_GET_LSIZE(bp)>>DNODE_SHIFT); dnx < dnend; dnx++) { if (dnx->dn_type != DMU_OT_NONE) fill++; } ASSERT3U(fill, ==, bp->blk_fill); } (void) sprintf(blkbuf, "%16llx ", (u_longlong_t)blkid2offset(dnp, zb->zb_level, zb->zb_blkid)); ASSERT(zb->zb_level >= 0); for (l = dnp->dn_nlevels - 1; l >= -1; l--) { if (l == zb->zb_level) { (void) sprintf(blkbuf + strlen(blkbuf), "L%llx", (u_longlong_t)zb->zb_level); } else { (void) sprintf(blkbuf + strlen(blkbuf), " "); } } out: if (bp->blk_birth == 0) { (void) sprintf(blkbuf + strlen(blkbuf), ""); (void) printf("%s\n", blkbuf); } else { sprintf_blkptr_compact(blkbuf + strlen(blkbuf), bp, dump_opt['d'] > 5 ? 1 : 0); (void) printf("%s\n", blkbuf); } return (bc->bc_errno ? ERESTART : 0); } /*ARGSUSED*/ static void dump_indirect(objset_t *os, uint64_t object, void *data, size_t size) { traverse_handle_t *th; uint64_t objset = dmu_objset_id(os); int advance = zdb_advance; (void) printf("Indirect blocks:\n"); if (object == 0) advance |= ADVANCE_DATA; th = traverse_init(dmu_objset_spa(os), zdb_indirect_cb, NULL, advance, ZIO_FLAG_CANFAIL); th->th_noread = zdb_noread; traverse_add_dnode(th, 0, -1ULL, objset, object); while (traverse_more(th) == EAGAIN) continue; (void) printf("\n"); traverse_fini(th); } /*ARGSUSED*/ static void dump_dsl_dir(objset_t *os, uint64_t object, void *data, size_t size) { dsl_dir_phys_t *dd = data; time_t crtime; char used[6], compressed[6], uncompressed[6], quota[6], resv[6]; if (dd == NULL) return; ASSERT(size == sizeof (*dd)); crtime = dd->dd_creation_time; nicenum(dd->dd_used_bytes, used); nicenum(dd->dd_compressed_bytes, compressed); nicenum(dd->dd_uncompressed_bytes, uncompressed); nicenum(dd->dd_quota, quota); nicenum(dd->dd_reserved, resv); (void) printf("\t\tcreation_time = %s", ctime(&crtime)); (void) printf("\t\thead_dataset_obj = %llu\n", (u_longlong_t)dd->dd_head_dataset_obj); (void) printf("\t\tparent_dir_obj = %llu\n", (u_longlong_t)dd->dd_parent_obj); (void) printf("\t\tclone_parent_obj = %llu\n", (u_longlong_t)dd->dd_clone_parent_obj); (void) printf("\t\tchild_dir_zapobj = %llu\n", (u_longlong_t)dd->dd_child_dir_zapobj); (void) printf("\t\tused_bytes = %s\n", used); (void) printf("\t\tcompressed_bytes = %s\n", compressed); (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed); (void) printf("\t\tquota = %s\n", quota); (void) printf("\t\treserved = %s\n", resv); (void) printf("\t\tprops_zapobj = %llu\n", (u_longlong_t)dd->dd_props_zapobj); } /*ARGSUSED*/ static void dump_dsl_dataset(objset_t *os, uint64_t object, void *data, size_t size) { dsl_dataset_phys_t *ds = data; time_t crtime; char used[6], compressed[6], uncompressed[6], unique[6]; char blkbuf[BP_SPRINTF_LEN]; if (ds == NULL) return; ASSERT(size == sizeof (*ds)); crtime = ds->ds_creation_time; nicenum(ds->ds_used_bytes, used); nicenum(ds->ds_compressed_bytes, compressed); nicenum(ds->ds_uncompressed_bytes, uncompressed); nicenum(ds->ds_unique_bytes, unique); sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ds->ds_bp); (void) printf("\t\tdataset_obj = %llu\n", (u_longlong_t)ds->ds_dir_obj); (void) printf("\t\tprev_snap_obj = %llu\n", (u_longlong_t)ds->ds_prev_snap_obj); (void) printf("\t\tprev_snap_txg = %llu\n", (u_longlong_t)ds->ds_prev_snap_txg); (void) printf("\t\tnext_snap_obj = %llu\n", (u_longlong_t)ds->ds_next_snap_obj); (void) printf("\t\tsnapnames_zapobj = %llu\n", (u_longlong_t)ds->ds_snapnames_zapobj); (void) printf("\t\tnum_children = %llu\n", (u_longlong_t)ds->ds_num_children); (void) printf("\t\tcreation_time = %s", ctime(&crtime)); (void) printf("\t\tcreation_txg = %llu\n", (u_longlong_t)ds->ds_creation_txg); (void) printf("\t\tdeadlist_obj = %llu\n", (u_longlong_t)ds->ds_deadlist_obj); (void) printf("\t\tused_bytes = %s\n", used); (void) printf("\t\tcompressed_bytes = %s\n", compressed); (void) printf("\t\tuncompressed_bytes = %s\n", uncompressed); (void) printf("\t\tunique = %s\n", unique); (void) printf("\t\tfsid_guid = %llu\n", (u_longlong_t)ds->ds_fsid_guid); (void) printf("\t\tguid = %llu\n", (u_longlong_t)ds->ds_guid); (void) printf("\t\tinconsistent = %llu\n", (u_longlong_t)ds->ds_inconsistent); (void) printf("\t\tbp = %s\n", blkbuf); } static void dump_bplist(objset_t *mos, uint64_t object, char *name) { bplist_t bpl = { 0 }; blkptr_t blk, *bp = &blk; uint64_t itor = 0; char numbuf[6]; if (dump_opt['d'] < 3) return; VERIFY(0 == bplist_open(&bpl, mos, object)); if (bplist_empty(&bpl)) { bplist_close(&bpl); return; } nicenum(bpl.bpl_phys->bpl_bytes, numbuf); (void) printf("\n %s: %llu entries, %s\n", name, (u_longlong_t)bpl.bpl_phys->bpl_entries, numbuf); if (dump_opt['d'] < 5) { bplist_close(&bpl); return; } (void) printf("\n"); while (bplist_iterate(&bpl, &itor, bp) == 0) { char blkbuf[BP_SPRINTF_LEN]; ASSERT(bp->blk_birth != 0); sprintf_blkptr_compact(blkbuf, bp, dump_opt['d'] > 5 ? 1 : 0); (void) printf("\tItem %3llu: %s\n", (u_longlong_t)itor - 1, blkbuf); } bplist_close(&bpl); } static char * znode_path(objset_t *os, uint64_t object, char *pathbuf, size_t size) { dmu_buf_t *db; dmu_object_info_t doi; znode_phys_t *zp; uint64_t parent = 0; size_t complen; char component[MAXNAMELEN + 1]; char *path; int error; path = pathbuf + size; *--path = '\0'; for (;;) { error = dmu_bonus_hold(os, object, FTAG, &db); if (error) break; dmu_object_info_from_db(db, &doi); zp = db->db_data; parent = zp->zp_parent; dmu_buf_rele(db, FTAG); if (doi.doi_bonus_type != DMU_OT_ZNODE) break; if (parent == object) { if (path[0] != '/') *--path = '/'; return (path); } if (zap_value_search(os, parent, object, component) != 0) break; complen = strlen(component); path -= complen; bcopy(component, path, complen); *--path = '/'; object = parent; } (void) sprintf(component, "???", (u_longlong_t)object); complen = strlen(component); path -= complen; bcopy(component, path, complen); return (path); } /*ARGSUSED*/ static void dump_znode(objset_t *os, uint64_t object, void *data, size_t size) { znode_phys_t *zp = data; time_t z_crtime, z_atime, z_mtime, z_ctime; char path[MAXPATHLEN * 2]; /* allow for xattr and failure prefix */ ASSERT(size >= sizeof (znode_phys_t)); if (dump_opt['d'] < 3) { (void) printf("\t%s\n", znode_path(os, object, path, sizeof (path))); return; } z_crtime = (time_t)zp->zp_crtime[0]; z_atime = (time_t)zp->zp_atime[0]; z_mtime = (time_t)zp->zp_mtime[0]; z_ctime = (time_t)zp->zp_ctime[0]; (void) printf("\tpath %s\n", znode_path(os, object, path, sizeof (path))); (void) printf("\tatime %s", ctime(&z_atime)); (void) printf("\tmtime %s", ctime(&z_mtime)); (void) printf("\tctime %s", ctime(&z_ctime)); (void) printf("\tcrtime %s", ctime(&z_crtime)); (void) printf("\tgen %llu\n", (u_longlong_t)zp->zp_gen); (void) printf("\tmode %llo\n", (u_longlong_t)zp->zp_mode); (void) printf("\tsize %llu\n", (u_longlong_t)zp->zp_size); (void) printf("\tparent %llu\n", (u_longlong_t)zp->zp_parent); (void) printf("\tlinks %llu\n", (u_longlong_t)zp->zp_links); (void) printf("\txattr %llu\n", (u_longlong_t)zp->zp_xattr); (void) printf("\trdev 0x%016llx\n", (u_longlong_t)zp->zp_rdev); } /*ARGSUSED*/ static void dump_acl(objset_t *os, uint64_t object, void *data, size_t size) { } /*ARGSUSED*/ static void dump_dmu_objset(objset_t *os, uint64_t object, void *data, size_t size) { } static object_viewer_t *object_viewer[DMU_OT_NUMTYPES] = { dump_none, /* unallocated */ dump_zap, /* object directory */ dump_uint64, /* object array */ dump_none, /* packed nvlist */ dump_packed_nvlist, /* packed nvlist size */ dump_none, /* bplist */ dump_none, /* bplist header */ dump_none, /* SPA space map header */ dump_none, /* SPA space map */ dump_none, /* ZIL intent log */ dump_dnode, /* DMU dnode */ dump_dmu_objset, /* DMU objset */ dump_dsl_dir, /* DSL directory */ dump_zap, /* DSL directory child map */ dump_zap, /* DSL dataset snap map */ dump_zap, /* DSL props */ dump_dsl_dataset, /* DSL dataset */ dump_znode, /* ZFS znode */ dump_acl, /* ZFS ACL */ dump_uint8, /* ZFS plain file */ dump_zap, /* ZFS directory */ dump_zap, /* ZFS master node */ dump_zap, /* ZFS delete queue */ dump_uint8, /* zvol object */ dump_zap, /* zvol prop */ dump_uint8, /* other uint8[] */ dump_uint64, /* other uint64[] */ dump_zap, /* other ZAP */ dump_zap, /* persistent error log */ }; static void dump_object(objset_t *os, uint64_t object, int verbosity, int *print_header) { dmu_buf_t *db = NULL; dmu_object_info_t doi; dnode_t *dn; void *bonus = NULL; size_t bsize = 0; char iblk[6], dblk[6], lsize[6], asize[6], bonus_size[6], segsize[6]; char aux[50]; int error; if (*print_header) { (void) printf("\n Object lvl iblk dblk lsize" " asize type\n"); *print_header = 0; } if (object == 0) { dn = os->os->os_meta_dnode; } else { error = dmu_bonus_hold(os, object, FTAG, &db); if (error) fatal("dmu_bonus_hold(%llu) failed, errno %u", object, error); bonus = db->db_data; bsize = db->db_size; dn = ((dmu_buf_impl_t *)db)->db_dnode; } dmu_object_info_from_dnode(dn, &doi); nicenum(doi.doi_metadata_block_size, iblk); nicenum(doi.doi_data_block_size, dblk); nicenum(doi.doi_data_block_size * (doi.doi_max_block_offset + 1), lsize); nicenum(doi.doi_physical_blks << 9, asize); nicenum(doi.doi_bonus_size, bonus_size); aux[0] = '\0'; if (doi.doi_checksum != ZIO_CHECKSUM_INHERIT || verbosity >= 6) (void) snprintf(aux + strlen(aux), sizeof (aux), " (K=%s)", zio_checksum_table[doi.doi_checksum].ci_name); if (doi.doi_compress != ZIO_COMPRESS_INHERIT || verbosity >= 6) (void) snprintf(aux + strlen(aux), sizeof (aux), " (Z=%s)", zio_compress_table[doi.doi_compress].ci_name); (void) printf("%10lld %3u %5s %5s %5s %5s %s%s\n", (u_longlong_t)object, doi.doi_indirection, iblk, dblk, lsize, asize, dmu_ot[doi.doi_type].ot_name, aux); if (doi.doi_bonus_type != DMU_OT_NONE && verbosity > 3) { (void) printf("%10s %3s %5s %5s %5s %5s %s\n", "", "", "", "", bonus_size, "bonus", dmu_ot[doi.doi_bonus_type].ot_name); } if (verbosity >= 4) { object_viewer[doi.doi_bonus_type](os, object, bonus, bsize); object_viewer[doi.doi_type](os, object, NULL, 0); *print_header = 1; } if (verbosity >= 5) dump_indirect(os, object, NULL, 0); if (verbosity >= 5) { /* * Report the list of segments that comprise the object. */ uint64_t start = 0; uint64_t end; uint64_t blkfill = 1; int minlvl = 1; if (dn->dn_type == DMU_OT_DNODE) { minlvl = 0; blkfill = DNODES_PER_BLOCK; } for (;;) { error = dnode_next_offset(dn, B_FALSE, &start, minlvl, blkfill); if (error) break; end = start; error = dnode_next_offset(dn, B_TRUE, &end, minlvl, blkfill); nicenum(end - start, segsize); (void) printf("\t\tsegment [%016llx, %016llx)" " size %5s\n", (u_longlong_t)start, (u_longlong_t)end, segsize); if (error) break; start = end; } } if (db != NULL) dmu_buf_rele(db, FTAG); } static char *objset_types[DMU_OST_NUMTYPES] = { "NONE", "META", "ZPL", "ZVOL", "OTHER", "ANY" }; /*ARGSUSED*/ static void dump_dir(objset_t *os) { dmu_objset_stats_t dds; uint64_t object, object_count; char numbuf[8]; char blkbuf[BP_SPRINTF_LEN]; char osname[MAXNAMELEN]; char *type = "UNKNOWN"; int verbosity = dump_opt['d']; int print_header = 1; int i, error; dmu_objset_stats(os, &dds); if (dds.dds_type < DMU_OST_NUMTYPES) type = objset_types[dds.dds_type]; if (dds.dds_type == DMU_OST_META) { dds.dds_creation_txg = TXG_INITIAL; dds.dds_last_txg = os->os->os_rootbp.blk_birth; dds.dds_objects_used = os->os->os_rootbp.blk_fill; dds.dds_space_refd = os->os->os_spa->spa_dsl_pool->dp_mos_dir->dd_used_bytes; } ASSERT3U(dds.dds_objects_used, ==, os->os->os_rootbp.blk_fill); nicenum(dds.dds_space_refd, numbuf); if (verbosity >= 4) { (void) strcpy(blkbuf, ", rootbp "); sprintf_blkptr(blkbuf + strlen(blkbuf), BP_SPRINTF_LEN - strlen(blkbuf), &os->os->os_rootbp); } else { blkbuf[0] = '\0'; } dmu_objset_name(os, osname); (void) printf("Dataset %s [%s], ID %llu, cr_txg %llu, last_txg %llu, " "%s, %llu objects%s\n", osname, type, (u_longlong_t)dmu_objset_id(os), (u_longlong_t)dds.dds_creation_txg, (u_longlong_t)dds.dds_last_txg, numbuf, (u_longlong_t)dds.dds_objects_used, blkbuf); dump_intent_log(dmu_objset_zil(os)); if (dmu_objset_ds(os) != NULL) dump_bplist(dmu_objset_pool(os)->dp_meta_objset, dmu_objset_ds(os)->ds_phys->ds_deadlist_obj, "Deadlist"); if (verbosity < 2) return; if (zopt_objects != 0) { for (i = 0; i < zopt_objects; i++) dump_object(os, zopt_object[i], verbosity, &print_header); (void) printf("\n"); return; } dump_object(os, 0, verbosity, &print_header); object_count = 1; object = 0; while ((error = dmu_object_next(os, &object, B_FALSE)) == 0) { dump_object(os, object, verbosity, &print_header); object_count++; } ASSERT3U(object_count, ==, dds.dds_objects_used); (void) printf("\n"); if (error != ESRCH) fatal("dmu_object_next() = %d", error); } static void dump_uberblock(uberblock_t *ub) { time_t timestamp = ub->ub_timestamp; (void) printf("Uberblock\n\n"); (void) printf("\tmagic = %016llx\n", (u_longlong_t)ub->ub_magic); (void) printf("\tversion = %llu\n", (u_longlong_t)ub->ub_version); (void) printf("\ttxg = %llu\n", (u_longlong_t)ub->ub_txg); (void) printf("\tguid_sum = %llu\n", (u_longlong_t)ub->ub_guid_sum); (void) printf("\ttimestamp = %llu UTC = %s", (u_longlong_t)ub->ub_timestamp, asctime(localtime(×tamp))); if (dump_opt['u'] >= 3) { char blkbuf[BP_SPRINTF_LEN]; sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &ub->ub_rootbp); (void) printf("\trootbp = %s\n", blkbuf); } (void) printf("\n"); } static void dump_config(const char *pool) { spa_t *spa = NULL; mutex_enter(&spa_namespace_lock); while ((spa = spa_next(spa)) != NULL) { if (pool == NULL) (void) printf("%s\n", spa_name(spa)); if (pool == NULL || strcmp(pool, spa_name(spa)) == 0) dump_nvlist(spa->spa_config, 4); } mutex_exit(&spa_namespace_lock); } static void dump_label(const char *dev) { int fd; vdev_label_t label; char *buf = label.vl_vdev_phys.vp_nvlist; size_t buflen = sizeof (label.vl_vdev_phys.vp_nvlist); struct stat64 statbuf; uint64_t psize; int l; if ((fd = open64(dev, O_RDONLY)) < 0) { (void) printf("cannot open '%s': %s\n", dev, strerror(errno)); exit(1); } if (fstat64(fd, &statbuf) != 0) { (void) printf("failed to stat '%s': %s\n", dev, strerror(errno)); exit(1); } psize = statbuf.st_size; psize = P2ALIGN(psize, (uint64_t)sizeof (vdev_label_t)); for (l = 0; l < VDEV_LABELS; l++) { nvlist_t *config = NULL; (void) printf("--------------------------------------------\n"); (void) printf("LABEL %d\n", l); (void) printf("--------------------------------------------\n"); if (pread64(fd, &label, sizeof (label), vdev_label_offset(psize, l, 0)) != sizeof (label)) { (void) printf("failed to read label %d\n", l); continue; } if (nvlist_unpack(buf, buflen, &config, 0) != 0) { (void) printf("failed to unpack label %d\n", l); continue; } dump_nvlist(config, 4); nvlist_free(config); } } /*ARGSUSED*/ static void dump_one_dir(char *dsname, void *arg) { int error; objset_t *os; error = dmu_objset_open(dsname, DMU_OST_ANY, DS_MODE_STANDARD | DS_MODE_READONLY, &os); if (error) { (void) printf("Could not open %s\n", dsname); return; } dump_dir(os); dmu_objset_close(os); } static void zdb_space_map_load(spa_t *spa) { vdev_t *rvd = spa->spa_root_vdev; vdev_t *vd; int c, m, error; for (c = 0; c < rvd->vdev_children; c++) { vd = rvd->vdev_child[c]; for (m = 0; m < vd->vdev_ms_count; m++) { metaslab_t *msp = vd->vdev_ms[m]; mutex_enter(&msp->ms_lock); error = space_map_load(&msp->ms_allocmap[0], NULL, SM_ALLOC, &msp->ms_smo, spa->spa_meta_objset); mutex_exit(&msp->ms_lock); if (error) fatal("%s bad space map #%d, error %d", spa->spa_name, c, error); } } } static int zdb_space_map_claim(spa_t *spa, blkptr_t *bp, zbookmark_t *zb) { dva_t *dva = bp->blk_dva; vdev_t *vd; metaslab_t *msp; space_map_t *allocmap, *freemap; int error; int d; blkptr_t blk = *bp; for (d = 0; d < BP_GET_NDVAS(bp); d++) { uint64_t vdev = DVA_GET_VDEV(&dva[d]); uint64_t offset = DVA_GET_OFFSET(&dva[d]); uint64_t size = DVA_GET_ASIZE(&dva[d]); if ((vd = vdev_lookup_top(spa, vdev)) == NULL) return (ENXIO); if ((offset >> vd->vdev_ms_shift) >= vd->vdev_ms_count) return (ENXIO); msp = vd->vdev_ms[offset >> vd->vdev_ms_shift]; allocmap = &msp->ms_allocmap[0]; freemap = &msp->ms_freemap[0]; /* Prepare our copy of the bp in case we need to read GBHs */ if (DVA_GET_GANG(&dva[d])) { size = vdev_psize_to_asize(vd, SPA_GANGBLOCKSIZE); DVA_SET_ASIZE(&blk.blk_dva[d], size); DVA_SET_GANG(&blk.blk_dva[d], 0); } mutex_enter(&msp->ms_lock); if (space_map_contains(freemap, offset, size)) { mutex_exit(&msp->ms_lock); return (EAGAIN); /* allocated more than once */ } if (!space_map_contains(allocmap, offset, size)) { mutex_exit(&msp->ms_lock); return (ESTALE); /* not allocated at all */ } space_map_remove(allocmap, offset, size); space_map_add(freemap, offset, size); mutex_exit(&msp->ms_lock); } if (BP_IS_GANG(bp)) { zio_gbh_phys_t gbh; int g; /* LINTED - compile time assert */ ASSERT(sizeof (zio_gbh_phys_t) == SPA_GANGBLOCKSIZE); BP_SET_CHECKSUM(&blk, ZIO_CHECKSUM_GANG_HEADER); BP_SET_PSIZE(&blk, SPA_GANGBLOCKSIZE); BP_SET_LSIZE(&blk, SPA_GANGBLOCKSIZE); BP_SET_COMPRESS(&blk, ZIO_COMPRESS_OFF); error = zio_wait(zio_read(NULL, spa, &blk, &gbh, SPA_GANGBLOCKSIZE, NULL, NULL, ZIO_PRIORITY_SYNC_READ, ZIO_FLAG_CANFAIL | ZIO_FLAG_CONFIG_HELD, zb)); if (error) return (error); if (BP_SHOULD_BYTESWAP(&blk)) byteswap_uint64_array(&gbh, SPA_GANGBLOCKSIZE); for (g = 0; g < SPA_GBH_NBLKPTRS; g++) { if (BP_IS_HOLE(&gbh.zg_blkptr[g])) break; error = zdb_space_map_claim(spa, &gbh.zg_blkptr[g], zb); if (error) return (error); } } return (0); } static void zdb_leak(space_map_t *sm, uint64_t start, uint64_t size) { metaslab_t *msp; /* LINTED */ msp = (metaslab_t *)((char *)sm - offsetof(metaslab_t, ms_allocmap[0])); (void) printf("leaked space: vdev %llu, offset 0x%llx, size %llu\n", (u_longlong_t)msp->ms_group->mg_vd->vdev_id, (u_longlong_t)start, (u_longlong_t)size); } static void zdb_space_map_unload(spa_t *spa) { vdev_t *rvd = spa->spa_root_vdev; vdev_t *vd; int c, m; for (c = 0; c < rvd->vdev_children; c++) { vd = rvd->vdev_child[c]; for (m = 0; m < vd->vdev_ms_count; m++) { metaslab_t *msp = vd->vdev_ms[m]; mutex_enter(&msp->ms_lock); space_map_vacate(&msp->ms_allocmap[0], zdb_leak, &msp->ms_allocmap[0]); space_map_unload(&msp->ms_allocmap[0]); space_map_vacate(&msp->ms_freemap[0], NULL, NULL); mutex_exit(&msp->ms_lock); } } } static void zdb_refresh_ubsync(spa_t *spa) { uberblock_t ub = { 0 }; vdev_t *rvd = spa->spa_root_vdev; zio_t *zio; /* * Reload the uberblock. */ zio = zio_root(spa, NULL, NULL, ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE); vdev_uberblock_load(zio, rvd, &ub); (void) zio_wait(zio); if (ub.ub_txg != 0) spa->spa_ubsync = ub; } /* * Verify that the sum of the sizes of all blocks in the pool adds up * to the SPA's sa_alloc total. */ typedef struct zdb_blkstats { uint64_t zb_asize; uint64_t zb_lsize; uint64_t zb_psize; uint64_t zb_count; } zdb_blkstats_t; #define DMU_OT_DEFERRED DMU_OT_NONE #define DMU_OT_TOTAL DMU_OT_NUMTYPES #define ZB_TOTAL ZB_MAXLEVEL typedef struct zdb_cb { zdb_blkstats_t zcb_type[ZB_TOTAL + 1][DMU_OT_TOTAL + 1]; uint64_t zcb_errors[256]; traverse_blk_cache_t *zcb_cache; int zcb_readfails; int zcb_haderrors; } zdb_cb_t; static void zdb_count_block(spa_t *spa, zdb_cb_t *zcb, blkptr_t *bp, int type) { int i, error; for (i = 0; i < 4; i++) { int l = (i < 2) ? BP_GET_LEVEL(bp) : ZB_TOTAL; int t = (i & 1) ? type : DMU_OT_TOTAL; zdb_blkstats_t *zb = &zcb->zcb_type[l][t]; zb->zb_asize += BP_GET_ASIZE(bp); zb->zb_lsize += BP_GET_LSIZE(bp); zb->zb_psize += BP_GET_PSIZE(bp); zb->zb_count++; } if (dump_opt['L']) return; error = zdb_space_map_claim(spa, bp, &zcb->zcb_cache->bc_bookmark); if (error == 0) return; if (error == EAGAIN) (void) fatal("double-allocation, bp=%p", bp); if (error == ESTALE) (void) fatal("reference to freed block, bp=%p", bp); (void) fatal("fatal error %d in bp %p", error, bp); } static int zdb_blkptr_cb(traverse_blk_cache_t *bc, spa_t *spa, void *arg) { zbookmark_t *zb = &bc->bc_bookmark; zdb_cb_t *zcb = arg; blkptr_t *bp = &bc->bc_blkptr; dmu_object_type_t type = BP_GET_TYPE(bp); char blkbuf[BP_SPRINTF_LEN]; int error = 0; if (bc->bc_errno) { if (zcb->zcb_readfails++ < 10 && dump_opt['L']) { zdb_refresh_ubsync(spa); error = EAGAIN; } else { zcb->zcb_haderrors = 1; zcb->zcb_errors[bc->bc_errno]++; error = ERESTART; } if (dump_opt['b'] >= 3 || (dump_opt['b'] >= 2 && bc->bc_errno)) sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp); else blkbuf[0] = '\0'; (void) printf("zdb_blkptr_cb: Got error %d reading " "<%llu, %llu, %lld, %llx> %s -- %s\n", bc->bc_errno, (u_longlong_t)zb->zb_objset, (u_longlong_t)zb->zb_object, (u_longlong_t)zb->zb_level, (u_longlong_t)zb->zb_blkid, blkbuf, error == EAGAIN ? "retrying" : "skipping"); return (error); } zcb->zcb_readfails = 0; ASSERT(!BP_IS_HOLE(bp)); zdb_count_block(spa, zcb, bp, type); if (dump_opt['b'] >= 4) { sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, bp); (void) printf("objset %llu object %llu offset 0x%llx %s\n", (u_longlong_t)zb->zb_objset, (u_longlong_t)zb->zb_object, (u_longlong_t)blkid2offset(bc->bc_dnode, zb->zb_level, zb->zb_blkid), blkbuf); } return (0); } static int dump_block_stats(spa_t *spa) { traverse_handle_t *th; zdb_cb_t zcb = { 0 }; traverse_blk_cache_t dummy_cache = { 0 }; zdb_blkstats_t *zb, *tzb; uint64_t alloc, space; int leaks = 0; int advance = zdb_advance; int flags; int e; zcb.zcb_cache = &dummy_cache; if (dump_opt['c']) advance |= ADVANCE_DATA; advance |= ADVANCE_PRUNE | ADVANCE_ZIL; (void) printf("\nTraversing all blocks to %sverify" " nothing leaked ...\n", dump_opt['c'] ? "verify checksums and " : ""); /* * Load all space maps. As we traverse the pool, if we find a block * that's not in its space map, that indicates a double-allocation, * reference to a freed block, or an unclaimed block. Otherwise we * remove the block from the space map. If the space maps are not * empty when we're done, that indicates leaked blocks. */ if (!dump_opt['L']) zdb_space_map_load(spa); /* * If there's a deferred-free bplist, process that first. */ if (spa->spa_sync_bplist_obj != 0) { bplist_t *bpl = &spa->spa_sync_bplist; blkptr_t blk; uint64_t itor = 0; VERIFY(0 == bplist_open(bpl, spa->spa_meta_objset, spa->spa_sync_bplist_obj)); while (bplist_iterate(bpl, &itor, &blk) == 0) { if (dump_opt['b'] >= 4) { char blkbuf[BP_SPRINTF_LEN]; sprintf_blkptr(blkbuf, BP_SPRINTF_LEN, &blk); (void) printf("[%s] %s\n", "deferred free", blkbuf); } zdb_count_block(spa, &zcb, &blk, DMU_OT_DEFERRED); } bplist_close(bpl); } /* * Now traverse the pool. If we're reading all data to verify * checksums, do a scrubbing read so that we validate all copies. */ flags = ZIO_FLAG_CANFAIL; if (advance & ADVANCE_DATA) flags |= ZIO_FLAG_SCRUB; th = traverse_init(spa, zdb_blkptr_cb, &zcb, advance, flags); th->th_noread = zdb_noread; traverse_add_pool(th, 0, spa_first_txg(spa) + TXG_CONCURRENT_STATES); while (traverse_more(th) == EAGAIN) continue; traverse_fini(th); if (zcb.zcb_haderrors) { (void) printf("\nError counts:\n\n"); (void) printf("\t%5s %s\n", "errno", "count"); for (e = 0; e < 256; e++) { if (zcb.zcb_errors[e] != 0) { (void) printf("\t%5d %llu\n", e, (u_longlong_t)zcb.zcb_errors[e]); } } } /* * Report any leaked segments. */ if (!dump_opt['L']) zdb_space_map_unload(spa); if (dump_opt['L']) (void) printf("\n\n *** Live pool traversal; " "block counts are only approximate ***\n\n"); alloc = spa_get_alloc(spa); space = spa_get_space(spa); tzb = &zcb.zcb_type[ZB_TOTAL][DMU_OT_TOTAL]; if (tzb->zb_asize == alloc) { (void) printf("\n\tNo leaks (block sum matches space" " maps exactly)\n"); } else { (void) printf("block traversal size %llu != alloc %llu " "(leaked %lld)\n", (u_longlong_t)tzb->zb_asize, (u_longlong_t)alloc, (u_longlong_t)(alloc - tzb->zb_asize)); leaks = 1; } if (tzb->zb_count == 0) return (2); (void) printf("\n"); (void) printf("\tbp count: %10llu\n", (u_longlong_t)tzb->zb_count); (void) printf("\tbp logical: %10llu\t avg: %6llu\n", (u_longlong_t)tzb->zb_lsize, (u_longlong_t)(tzb->zb_lsize / tzb->zb_count)); (void) printf("\tbp physical: %10llu\t avg:" " %6llu\tcompression: %6.2f\n", (u_longlong_t)tzb->zb_psize, (u_longlong_t)(tzb->zb_psize / tzb->zb_count), (double)tzb->zb_lsize / tzb->zb_psize); (void) printf("\tbp allocated: %10llu\t avg:" " %6llu\tcompression: %6.2f\n", (u_longlong_t)tzb->zb_asize, (u_longlong_t)(tzb->zb_asize / tzb->zb_count), (double)tzb->zb_lsize / tzb->zb_asize); (void) printf("\tSPA allocated: %10llu\tused: %5.2f%%\n", (u_longlong_t)alloc, 100.0 * alloc / space); if (dump_opt['b'] >= 2) { int l, t, level; (void) printf("\nBlocks\tLSIZE\tPSIZE\tASIZE" "\t avg\t comp\t%%Total\tType\n"); for (t = 0; t <= DMU_OT_NUMTYPES; t++) { char csize[6], lsize[6], psize[6], asize[6], avg[6]; char *typename; typename = t == DMU_OT_DEFERRED ? "deferred free" : t == DMU_OT_TOTAL ? "Total" : dmu_ot[t].ot_name; if (zcb.zcb_type[ZB_TOTAL][t].zb_asize == 0) { (void) printf("%6s\t%5s\t%5s\t%5s" "\t%5s\t%5s\t%6s\t%s\n", "-", "-", "-", "-", "-", "-", "-", typename); continue; } for (l = ZB_TOTAL - 1; l >= -1; l--) { level = (l == -1 ? ZB_TOTAL : l); zb = &zcb.zcb_type[level][t]; if (zb->zb_asize == 0) continue; if (dump_opt['b'] < 3 && level != ZB_TOTAL) continue; if (level == 0 && zb->zb_asize == zcb.zcb_type[ZB_TOTAL][t].zb_asize) continue; nicenum(zb->zb_count, csize); nicenum(zb->zb_lsize, lsize); nicenum(zb->zb_psize, psize); nicenum(zb->zb_asize, asize); nicenum(zb->zb_asize / zb->zb_count, avg); (void) printf("%6s\t%5s\t%5s\t%5s\t%5s" "\t%5.2f\t%6.2f\t", csize, lsize, psize, asize, avg, (double)zb->zb_lsize / zb->zb_psize, 100.0 * zb->zb_asize / tzb->zb_asize); if (level == ZB_TOTAL) (void) printf("%s\n", typename); else (void) printf(" L%d %s\n", level, typename); } } } (void) printf("\n"); if (leaks) return (2); if (zcb.zcb_haderrors) return (3); return (0); } static void dump_zpool(spa_t *spa) { dsl_pool_t *dp = spa_get_dsl(spa); int rc = 0; if (dump_opt['u']) dump_uberblock(&spa->spa_uberblock); if (dump_opt['d'] || dump_opt['i']) { dump_dir(dp->dp_meta_objset); if (dump_opt['d'] >= 3) { dump_bplist(dp->dp_meta_objset, spa->spa_sync_bplist_obj, "Deferred frees"); dump_dtl(spa->spa_root_vdev, 0); dump_metaslabs(spa); } dmu_objset_find(spa->spa_name, dump_one_dir, NULL, DS_FIND_SNAPSHOTS); } if (dump_opt['b'] || dump_opt['c']) rc = dump_block_stats(spa); if (dump_opt['s']) show_pool_stats(spa); if (rc != 0) exit(rc); } #define ZDB_FLAG_CHECKSUM 0x0001 #define ZDB_FLAG_DECOMPRESS 0x0002 #define ZDB_FLAG_BSWAP 0x0004 #define ZDB_FLAG_GBH 0x0008 #define ZDB_FLAG_INDIRECT 0x0010 #define ZDB_FLAG_PHYS 0x0020 #define ZDB_FLAG_RAW 0x0040 #define ZDB_FLAG_PRINT_BLKPTR 0x0080 int flagbits[256]; static void zdb_print_blkptr(blkptr_t *bp, int flags) { dva_t *dva = bp->blk_dva; int d; if (flags & ZDB_FLAG_BSWAP) byteswap_uint64_array((void *)bp, sizeof (blkptr_t)); /* * Super-ick warning: This code is also duplicated in * cmd/mdb/common/modules/zfs/zfs.c . Yeah, I hate code * replication, too. */ for (d = 0; d < BP_GET_NDVAS(bp); d++) { (void) printf("\tDVA[%d]: vdev_id %lld / %llx\n", d, DVA_GET_VDEV(&dva[d]), DVA_GET_OFFSET(&dva[d])); (void) printf("\tDVA[%d]: GANG: %-5s GRID: %04llx\t" "ASIZE: %llx\n", d, DVA_GET_GANG(&dva[d]) ? "TRUE" : "FALSE", DVA_GET_GRID(&dva[d]), DVA_GET_ASIZE(&dva[d])); (void) printf("\tDVA[%d]: :%llu:%llx:%llx:%s%s%s%s\n", d, DVA_GET_VDEV(&dva[d]), DVA_GET_OFFSET(&dva[d]), BP_GET_PSIZE(bp), BP_SHOULD_BYTESWAP(bp) ? "e" : "", !DVA_GET_GANG(&dva[d]) && BP_GET_LEVEL(bp) != 0 ? "d" : "", DVA_GET_GANG(&dva[d]) ? "g" : "", BP_GET_COMPRESS(bp) != 0 ? "d" : ""); } (void) printf("\tLSIZE: %-16llx\t\tPSIZE: %llx\n", BP_GET_LSIZE(bp), BP_GET_PSIZE(bp)); (void) printf("\tENDIAN: %6s\t\t\t\t\tTYPE: %s\n", BP_GET_BYTEORDER(bp) ? "LITTLE" : "BIG", dmu_ot[BP_GET_TYPE(bp)].ot_name); (void) printf("\tBIRTH: %-16llx LEVEL: %-2llu\tFILL: %llx\n", (u_longlong_t)bp->blk_birth, BP_GET_LEVEL(bp), (u_longlong_t)bp->blk_fill); (void) printf("\tCKFUNC: %-16s\t\tCOMP: %s\n", zio_checksum_table[BP_GET_CHECKSUM(bp)].ci_name, zio_compress_table[BP_GET_COMPRESS(bp)].ci_name); (void) printf("\tCKSUM: %llx:%llx:%llx:%llx\n", (u_longlong_t)bp->blk_cksum.zc_word[0], (u_longlong_t)bp->blk_cksum.zc_word[1], (u_longlong_t)bp->blk_cksum.zc_word[2], (u_longlong_t)bp->blk_cksum.zc_word[3]); } static void zdb_dump_indirect(blkptr_t *bp, int nbps, int flags) { int i; for (i = 0; i < nbps; i++) zdb_print_blkptr(&bp[i], flags); } static void zdb_dump_gbh(void *buf, int flags) { zdb_dump_indirect((blkptr_t *)buf, SPA_GBH_NBLKPTRS, flags); } static void zdb_dump_block_raw(void *buf, uint64_t size, int flags) { if (flags & ZDB_FLAG_BSWAP) byteswap_uint64_array(buf, size); (void) write(2, buf, size); } static void zdb_dump_block(char *label, void *buf, uint64_t size, int flags) { uint64_t *d = (uint64_t *)buf; int nwords = size / sizeof (uint64_t); int do_bswap = !!(flags & ZDB_FLAG_BSWAP); int i, j; char *hdr, *c; if (do_bswap) hdr = " 7 6 5 4 3 2 1 0 f e d c b a 9 8"; else hdr = " 0 1 2 3 4 5 6 7 8 9 a b c d e f"; (void) printf("\n%s\n%6s %s 0123456789abcdef\n", label, "", hdr); for (i = 0; i < nwords; i += 2) { (void) printf("%06llx: %016llx %016llx ", (u_longlong_t)(i * sizeof (uint64_t)), (u_longlong_t)(do_bswap ? BSWAP_64(d[i]) : d[i]), (u_longlong_t)(do_bswap ? BSWAP_64(d[i + 1]) : d[i + 1])); c = (char *)&d[i]; for (j = 0; j < 2 * sizeof (uint64_t); j++) (void) printf("%c", isprint(c[j]) ? c[j] : '.'); (void) printf("\n"); } } /* * There are two acceptable formats: * leaf_name - For example: c1t0d0 or /tmp/ztest.0a * child[.child]* - For example: 0.1.1 * * The second form can be used to specify arbitrary vdevs anywhere * in the heirarchy. For example, in a pool with a mirror of * RAID-Zs, you can specify either RAID-Z vdev with 0.0 or 0.1 . */ static vdev_t * zdb_vdev_lookup(vdev_t *vdev, char *path) { char *s, *p, *q; int i; if (vdev == NULL) return (NULL); /* First, assume the x.x.x.x format */ i = (int)strtoul(path, &s, 10); if (s == path || (s && *s != '.' && *s != '\0')) goto name; if (i < 0 || i >= vdev->vdev_children) return (NULL); vdev = vdev->vdev_child[i]; if (*s == '\0') return (vdev); return (zdb_vdev_lookup(vdev, s+1)); name: for (i = 0; i < vdev->vdev_children; i++) { vdev_t *vc = vdev->vdev_child[i]; if (vc->vdev_path == NULL) { vc = zdb_vdev_lookup(vc, path); if (vc == NULL) continue; else return (vc); } p = strrchr(vc->vdev_path, '/'); p = p ? p + 1 : vc->vdev_path; q = &vc->vdev_path[strlen(vc->vdev_path) - 2]; if (strcmp(vc->vdev_path, path) == 0) return (vc); if (strcmp(p, path) == 0) return (vc); if (strcmp(q, "s0") == 0 && strncmp(p, path, q - p) == 0) return (vc); } return (NULL); } /* * Read a block from a pool and print it out. The syntax of the * block descriptor is: * * pool:vdev_specifier:offset:size[:flags] * * pool - The name of the pool you wish to read from * vdev_specifier - Which vdev (see comment for zdb_vdev_lookup) * offset - offset, in hex, in bytes * size - Amount of data to read, in hex, in bytes * flags - A string of characters specifying options * b: Decode a blkptr at given offset within block * *c: Calculate and display checksums * *d: Decompress data before dumping * e: Byteswap data before dumping * *g: Display data as a gang block header * *i: Display as an indirect block * p: Do I/O to physical offset * r: Dump raw data to stdout * * * = not yet implemented */ static void zdb_read_block(char *thing, spa_t **spap) { spa_t *spa = *spap; int flags = 0; uint64_t offset = 0, size = 0, blkptr_offset = 0; zio_t *zio; vdev_t *vd; void *buf; char *s, *p, *dup, *spa_name, *vdev, *flagstr; int i, error, zio_flags; dup = strdup(thing); s = strtok(dup, ":"); spa_name = s ? s : ""; s = strtok(NULL, ":"); vdev = s ? s : ""; s = strtok(NULL, ":"); offset = strtoull(s ? s : "", NULL, 16); s = strtok(NULL, ":"); size = strtoull(s ? s : "", NULL, 16); s = strtok(NULL, ":"); flagstr = s ? s : ""; s = NULL; if (size == 0) s = "size must not be zero"; if (!IS_P2ALIGNED(size, DEV_BSIZE)) s = "size must be a multiple of sector size"; if (!IS_P2ALIGNED(offset, DEV_BSIZE)) s = "offset must be a multiple of sector size"; if (s) { (void) printf("Invalid block specifier: %s - %s\n", thing, s); free(dup); return; } for (s = strtok(flagstr, ":"); s; s = strtok(NULL, ":")) { for (i = 0; flagstr[i]; i++) { int bit = flagbits[flagstr[i]]; if (bit == 0) { (void) printf("***Invalid flag: %c\n", flagstr[i]); continue; } flags |= bit; /* If it's not something with an argument, keep going */ if ((bit & (ZDB_FLAG_CHECKSUM | ZDB_FLAG_DECOMPRESS | ZDB_FLAG_PRINT_BLKPTR)) == 0) continue; p = &flagstr[i + 1]; if (bit == ZDB_FLAG_PRINT_BLKPTR) blkptr_offset = strtoull(p, &p, 16); if (*p != ':' && *p != '\0') { (void) printf("***Invalid flag arg: '%s'\n", s); free(dup); return; } } } if (spa == NULL || spa->spa_name == NULL || strcmp(spa->spa_name, spa_name)) { if (spa && spa->spa_name) spa_close(spa, (void *)zdb_read_block); error = spa_open(spa_name, spap, (void *)zdb_read_block); if (error) fatal("Failed to open pool '%s': errno = %d\n", spa_name, error); spa = *spap; } vd = zdb_vdev_lookup(spa->spa_root_vdev, vdev); if (vd == NULL) { (void) printf("***Invalid vdev: %s\n", vdev); free(dup); return; } else { if (vd->vdev_path) (void) printf("Found vdev: %s\n", vd->vdev_path); else (void) printf("Found vdev type: %s\n", vd->vdev_ops->vdev_op_type); } buf = umem_alloc(size, UMEM_NOFAIL); zio_flags = ZIO_FLAG_DONT_CACHE | ZIO_FLAG_DONT_QUEUE | ZIO_FLAG_DONT_PROPAGATE | ZIO_FLAG_DONT_RETRY | ZIO_FLAG_NOBOOKMARK; if (flags & ZDB_FLAG_PHYS) zio_flags |= ZIO_FLAG_PHYSICAL; zio = zio_root(spa, NULL, NULL, 0); /* XXX todo - cons up a BP so RAID-Z will be happy */ zio_nowait(zio_vdev_child_io(zio, NULL, vd, offset, buf, size, ZIO_TYPE_READ, ZIO_PRIORITY_SYNC_READ, zio_flags, NULL, NULL)); error = zio_wait(zio); if (error) { (void) printf("Read of %s failed, error: %d\n", thing, error); goto out; } if (flags & ZDB_FLAG_PRINT_BLKPTR) zdb_print_blkptr((blkptr_t *)(void *) ((uintptr_t)buf + (uintptr_t)blkptr_offset), flags); else if (flags & ZDB_FLAG_RAW) zdb_dump_block_raw(buf, size, flags); else if (flags & ZDB_FLAG_INDIRECT) zdb_dump_indirect((blkptr_t *)buf, size / sizeof (blkptr_t), flags); else if (flags & ZDB_FLAG_GBH) zdb_dump_gbh(buf, flags); else zdb_dump_block(thing, buf, size, flags); out: umem_free(buf, size); free(dup); } int main(int argc, char **argv) { int i, c; struct rlimit rl = { 1024, 1024 }; spa_t *spa; objset_t *os = NULL; char *endstr; int dump_all = 1; int verbose = 0; int error; int flag, set; vdev_knob_t *vk; (void) setrlimit(RLIMIT_NOFILE, &rl); dprintf_setup(&argc, argv); while ((c = getopt(argc, argv, "udibcsvCLO:B:UlR")) != -1) { switch (c) { case 'u': case 'd': case 'i': case 'b': case 'c': case 's': case 'C': case 'l': case 'R': dump_opt[c]++; dump_all = 0; break; case 'L': dump_opt[c]++; break; case 'O': endstr = optarg; if (endstr[0] == '!') { endstr++; set = 0; } else { set = 1; } if (strcmp(endstr, "post") == 0) { flag = ADVANCE_PRE; set = !set; } else if (strcmp(endstr, "pre") == 0) { flag = ADVANCE_PRE; } else if (strcmp(endstr, "prune") == 0) { flag = ADVANCE_PRUNE; } else if (strcmp(endstr, "data") == 0) { flag = ADVANCE_DATA; } else if (strcmp(endstr, "holes") == 0) { flag = ADVANCE_HOLES; } else { usage(); } if (set) zdb_advance |= flag; else zdb_advance &= ~flag; break; case 'B': endstr = optarg - 1; zdb_noread.zb_objset = strtoull(endstr + 1, &endstr, 0); zdb_noread.zb_object = strtoull(endstr + 1, &endstr, 0); zdb_noread.zb_level = strtol(endstr + 1, &endstr, 0); zdb_noread.zb_blkid = strtoull(endstr + 1, &endstr, 16); (void) printf("simulating bad block " "<%llu, %llu, %lld, %llx>\n", (u_longlong_t)zdb_noread.zb_objset, (u_longlong_t)zdb_noread.zb_object, (u_longlong_t)zdb_noread.zb_level, (u_longlong_t)zdb_noread.zb_blkid); break; case 'v': verbose++; break; case 'U': spa_config_dir = "/tmp"; break; default: usage(); break; } } kernel_init(FREAD); /* * Disable vdev caching. If we don't do this, live pool traversal * won't make progress because it will never see disk updates. */ for (vk = vdev_knob_next(NULL); vk != NULL; vk = vdev_knob_next(vk)) { if (strcmp(vk->vk_name, "cache_size") == 0) vk->vk_default = 0; } for (c = 0; c < 256; c++) { if (dump_all && c != 'L' && c != 'l' && c != 'R') dump_opt[c] = 1; if (dump_opt[c]) dump_opt[c] += verbose; } argc -= optind; argv += optind; if (argc < 1) { if (dump_opt['C']) { dump_config(NULL); return (0); } usage(); } if (dump_opt['l']) { dump_label(argv[0]); return (0); } if (dump_opt['R']) { flagbits['b'] = ZDB_FLAG_PRINT_BLKPTR; flagbits['c'] = ZDB_FLAG_CHECKSUM; flagbits['d'] = ZDB_FLAG_DECOMPRESS; flagbits['e'] = ZDB_FLAG_BSWAP; flagbits['g'] = ZDB_FLAG_GBH; flagbits['i'] = ZDB_FLAG_INDIRECT; flagbits['p'] = ZDB_FLAG_PHYS; flagbits['r'] = ZDB_FLAG_RAW; spa = NULL; while (argv[0]) { zdb_read_block(argv[0], &spa); argv++; argc--; } if (spa) spa_close(spa, (void *)zdb_read_block); return (0); } if (dump_opt['C']) dump_config(argv[0]); if (strchr(argv[0], '/') != NULL) { error = dmu_objset_open(argv[0], DMU_OST_ANY, DS_MODE_STANDARD | DS_MODE_READONLY, &os); } else { error = spa_open(argv[0], &spa, FTAG); } if (error) fatal("can't open %s: error %d", argv[0], error); argv++; if (--argc > 0) { zopt_objects = argc; zopt_object = calloc(zopt_objects, sizeof (uint64_t)); for (i = 0; i < zopt_objects; i++) { errno = 0; zopt_object[i] = strtoull(argv[i], NULL, 0); if (zopt_object[i] == 0 && errno != 0) fatal("bad object number %s: %s", argv[i], strerror(errno)); } } if (os != NULL) { dump_dir(os); dmu_objset_close(os); } else { dump_zpool(spa); spa_close(spa, FTAG); } kernel_fini(); return (0); }