1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5ea8dc4b6Seschrock * Common Development and Distribution License (the "License"). 6ea8dc4b6Seschrock * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 21fa9e4066Sahrens /* 2206e0070dSMark Shellenbaum * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23*e77d42eaSMatthew Ahrens * Copyright (c) 2013, 2014 by Delphix. All rights reserved. 24*e77d42eaSMatthew Ahrens * Copyright 2014 HybridCluster. All rights reserved. 25fa9e4066Sahrens */ 26fa9e4066Sahrens 27fa9e4066Sahrens #include <sys/dmu.h> 28fa9e4066Sahrens #include <sys/dmu_objset.h> 29fa9e4066Sahrens #include <sys/dmu_tx.h> 30fa9e4066Sahrens #include <sys/dnode.h> 312acef22dSMatthew Ahrens #include <sys/zap.h> 322acef22dSMatthew Ahrens #include <sys/zfeature.h> 33fa9e4066Sahrens 34fa9e4066Sahrens uint64_t 35fa9e4066Sahrens dmu_object_alloc(objset_t *os, dmu_object_type_t ot, int blocksize, 36fa9e4066Sahrens dmu_object_type_t bonustype, int bonuslen, dmu_tx_t *tx) 37fa9e4066Sahrens { 38fa9e4066Sahrens uint64_t object; 39fa9e4066Sahrens uint64_t L2_dnode_count = DNODES_PER_BLOCK << 40744947dcSTom Erickson (DMU_META_DNODE(os)->dn_indblkshift - SPA_BLKPTRSHIFT); 41ea8dc4b6Seschrock dnode_t *dn = NULL; 42fa9e4066Sahrens int restarted = B_FALSE; 43fa9e4066Sahrens 44503ad85cSMatthew Ahrens mutex_enter(&os->os_obj_lock); 45fa9e4066Sahrens for (;;) { 46503ad85cSMatthew Ahrens object = os->os_obj_next; 47fa9e4066Sahrens /* 48fa9e4066Sahrens * Each time we polish off an L2 bp worth of dnodes 49fa9e4066Sahrens * (2^13 objects), move to another L2 bp that's still 50fa9e4066Sahrens * reasonably sparse (at most 1/4 full). Look from the 51fa9e4066Sahrens * beginning once, but after that keep looking from here. 52fa9e4066Sahrens * If we can't find one, just keep going from here. 53fa9e4066Sahrens */ 54fa9e4066Sahrens if (P2PHASE(object, L2_dnode_count) == 0) { 55fa9e4066Sahrens uint64_t offset = restarted ? object << DNODE_SHIFT : 0; 56744947dcSTom Erickson int error = dnode_next_offset(DMU_META_DNODE(os), 57cdb0ab79Smaybee DNODE_FIND_HOLE, 58cdb0ab79Smaybee &offset, 2, DNODES_PER_BLOCK >> 2, 0); 59fa9e4066Sahrens restarted = B_TRUE; 60fa9e4066Sahrens if (error == 0) 61fa9e4066Sahrens object = offset >> DNODE_SHIFT; 62fa9e4066Sahrens } 63503ad85cSMatthew Ahrens os->os_obj_next = ++object; 64fa9e4066Sahrens 65ea8dc4b6Seschrock /* 66ea8dc4b6Seschrock * XXX We should check for an i/o error here and return 67ea8dc4b6Seschrock * up to our caller. Actually we should pre-read it in 68ea8dc4b6Seschrock * dmu_tx_assign(), but there is currently no mechanism 69ea8dc4b6Seschrock * to do so. 70ea8dc4b6Seschrock */ 71503ad85cSMatthew Ahrens (void) dnode_hold_impl(os, object, DNODE_MUST_BE_FREE, 72ea8dc4b6Seschrock FTAG, &dn); 73fa9e4066Sahrens if (dn) 74fa9e4066Sahrens break; 75fa9e4066Sahrens 766754306eSahrens if (dmu_object_next(os, &object, B_TRUE, 0) == 0) 77503ad85cSMatthew Ahrens os->os_obj_next = object - 1; 78fa9e4066Sahrens } 79fa9e4066Sahrens 80fa9e4066Sahrens dnode_allocate(dn, ot, blocksize, 0, bonustype, bonuslen, tx); 81fa9e4066Sahrens dnode_rele(dn, FTAG); 82fa9e4066Sahrens 83503ad85cSMatthew Ahrens mutex_exit(&os->os_obj_lock); 84fa9e4066Sahrens 85fa9e4066Sahrens dmu_tx_add_new_object(tx, os, object); 86fa9e4066Sahrens return (object); 87fa9e4066Sahrens } 88fa9e4066Sahrens 89fa9e4066Sahrens int 90fa9e4066Sahrens dmu_object_claim(objset_t *os, uint64_t object, dmu_object_type_t ot, 91fa9e4066Sahrens int blocksize, dmu_object_type_t bonustype, int bonuslen, dmu_tx_t *tx) 92fa9e4066Sahrens { 93fa9e4066Sahrens dnode_t *dn; 94ea8dc4b6Seschrock int err; 95fa9e4066Sahrens 96ea8dc4b6Seschrock if (object == DMU_META_DNODE_OBJECT && !dmu_tx_private_ok(tx)) 97be6fd75aSMatthew Ahrens return (SET_ERROR(EBADF)); 98fa9e4066Sahrens 99503ad85cSMatthew Ahrens err = dnode_hold_impl(os, object, DNODE_MUST_BE_FREE, FTAG, &dn); 100ea8dc4b6Seschrock if (err) 101ea8dc4b6Seschrock return (err); 102fa9e4066Sahrens dnode_allocate(dn, ot, blocksize, 0, bonustype, bonuslen, tx); 103fa9e4066Sahrens dnode_rele(dn, FTAG); 104fa9e4066Sahrens 105fa9e4066Sahrens dmu_tx_add_new_object(tx, os, object); 106fa9e4066Sahrens return (0); 107fa9e4066Sahrens } 108fa9e4066Sahrens 109fa9e4066Sahrens int 110fa9e4066Sahrens dmu_object_reclaim(objset_t *os, uint64_t object, dmu_object_type_t ot, 111*e77d42eaSMatthew Ahrens int blocksize, dmu_object_type_t bonustype, int bonuslen, dmu_tx_t *tx) 112fa9e4066Sahrens { 113fa9e4066Sahrens dnode_t *dn; 114ea8dc4b6Seschrock int err; 115fa9e4066Sahrens 1162bf405a2SMark Maybee if (object == DMU_META_DNODE_OBJECT) 117be6fd75aSMatthew Ahrens return (SET_ERROR(EBADF)); 118fa9e4066Sahrens 119503ad85cSMatthew Ahrens err = dnode_hold_impl(os, object, DNODE_MUST_BE_ALLOCATED, 120ea8dc4b6Seschrock FTAG, &dn); 121ea8dc4b6Seschrock if (err) 122ea8dc4b6Seschrock return (err); 1232bf405a2SMark Maybee 124fa9e4066Sahrens dnode_reallocate(dn, ot, blocksize, bonustype, bonuslen, tx); 1252bf405a2SMark Maybee 126fa9e4066Sahrens dnode_rele(dn, FTAG); 127cf04dda1SMark Maybee return (err); 128fa9e4066Sahrens } 129fa9e4066Sahrens 130fa9e4066Sahrens int 131fa9e4066Sahrens dmu_object_free(objset_t *os, uint64_t object, dmu_tx_t *tx) 132fa9e4066Sahrens { 133fa9e4066Sahrens dnode_t *dn; 134ea8dc4b6Seschrock int err; 135fa9e4066Sahrens 136ea8dc4b6Seschrock ASSERT(object != DMU_META_DNODE_OBJECT || dmu_tx_private_ok(tx)); 137fa9e4066Sahrens 138503ad85cSMatthew Ahrens err = dnode_hold_impl(os, object, DNODE_MUST_BE_ALLOCATED, 139ea8dc4b6Seschrock FTAG, &dn); 140ea8dc4b6Seschrock if (err) 141ea8dc4b6Seschrock return (err); 142fa9e4066Sahrens 143fa9e4066Sahrens ASSERT(dn->dn_type != DMU_OT_NONE); 144cdb0ab79Smaybee dnode_free_range(dn, 0, DMU_OBJECT_END, tx); 145fa9e4066Sahrens dnode_free(dn, tx); 146fa9e4066Sahrens dnode_rele(dn, FTAG); 147fa9e4066Sahrens 148fa9e4066Sahrens return (0); 149fa9e4066Sahrens } 150fa9e4066Sahrens 151fa9e4066Sahrens int 1526754306eSahrens dmu_object_next(objset_t *os, uint64_t *objectp, boolean_t hole, uint64_t txg) 153fa9e4066Sahrens { 154fa9e4066Sahrens uint64_t offset = (*objectp + 1) << DNODE_SHIFT; 155fa9e4066Sahrens int error; 156fa9e4066Sahrens 157744947dcSTom Erickson error = dnode_next_offset(DMU_META_DNODE(os), 158cdb0ab79Smaybee (hole ? DNODE_FIND_HOLE : 0), &offset, 0, DNODES_PER_BLOCK, txg); 159fa9e4066Sahrens 160fa9e4066Sahrens *objectp = offset >> DNODE_SHIFT; 161fa9e4066Sahrens 162fa9e4066Sahrens return (error); 163fa9e4066Sahrens } 1642acef22dSMatthew Ahrens 1652acef22dSMatthew Ahrens /* 1662acef22dSMatthew Ahrens * Turn this object from old_type into DMU_OTN_ZAP_METADATA, and bump the 1672acef22dSMatthew Ahrens * refcount on SPA_FEATURE_EXTENSIBLE_DATASET. 1682acef22dSMatthew Ahrens * 1692acef22dSMatthew Ahrens * Only for use from syncing context, on MOS objects. 1702acef22dSMatthew Ahrens */ 1712acef22dSMatthew Ahrens void 1722acef22dSMatthew Ahrens dmu_object_zapify(objset_t *mos, uint64_t object, dmu_object_type_t old_type, 1732acef22dSMatthew Ahrens dmu_tx_t *tx) 1742acef22dSMatthew Ahrens { 1752acef22dSMatthew Ahrens dnode_t *dn; 1762acef22dSMatthew Ahrens 1772acef22dSMatthew Ahrens ASSERT(dmu_tx_is_syncing(tx)); 1782acef22dSMatthew Ahrens 1792acef22dSMatthew Ahrens VERIFY0(dnode_hold(mos, object, FTAG, &dn)); 1802acef22dSMatthew Ahrens if (dn->dn_type == DMU_OTN_ZAP_METADATA) { 1812acef22dSMatthew Ahrens dnode_rele(dn, FTAG); 1822acef22dSMatthew Ahrens return; 1832acef22dSMatthew Ahrens } 1842acef22dSMatthew Ahrens ASSERT3U(dn->dn_type, ==, old_type); 1852acef22dSMatthew Ahrens ASSERT0(dn->dn_maxblkid); 1862acef22dSMatthew Ahrens dn->dn_next_type[tx->tx_txg & TXG_MASK] = dn->dn_type = 1872acef22dSMatthew Ahrens DMU_OTN_ZAP_METADATA; 1882acef22dSMatthew Ahrens dnode_setdirty(dn, tx); 1892acef22dSMatthew Ahrens dnode_rele(dn, FTAG); 1902acef22dSMatthew Ahrens 1912acef22dSMatthew Ahrens mzap_create_impl(mos, object, 0, 0, tx); 1922acef22dSMatthew Ahrens 1932acef22dSMatthew Ahrens spa_feature_incr(dmu_objset_spa(mos), 1942acef22dSMatthew Ahrens SPA_FEATURE_EXTENSIBLE_DATASET, tx); 1952acef22dSMatthew Ahrens } 1962acef22dSMatthew Ahrens 1972acef22dSMatthew Ahrens void 1982acef22dSMatthew Ahrens dmu_object_free_zapified(objset_t *mos, uint64_t object, dmu_tx_t *tx) 1992acef22dSMatthew Ahrens { 2002acef22dSMatthew Ahrens dnode_t *dn; 2012acef22dSMatthew Ahrens dmu_object_type_t t; 2022acef22dSMatthew Ahrens 2032acef22dSMatthew Ahrens ASSERT(dmu_tx_is_syncing(tx)); 2042acef22dSMatthew Ahrens 2052acef22dSMatthew Ahrens VERIFY0(dnode_hold(mos, object, FTAG, &dn)); 2062acef22dSMatthew Ahrens t = dn->dn_type; 2072acef22dSMatthew Ahrens dnode_rele(dn, FTAG); 2082acef22dSMatthew Ahrens 2092acef22dSMatthew Ahrens if (t == DMU_OTN_ZAP_METADATA) { 2102acef22dSMatthew Ahrens spa_feature_decr(dmu_objset_spa(mos), 2112acef22dSMatthew Ahrens SPA_FEATURE_EXTENSIBLE_DATASET, tx); 2122acef22dSMatthew Ahrens } 2132acef22dSMatthew Ahrens VERIFY0(dmu_object_free(mos, object, tx)); 2142acef22dSMatthew Ahrens } 215