1cde58dbcSMatthew Ahrens /* 2cde58dbcSMatthew Ahrens * CDDL HEADER START 3cde58dbcSMatthew Ahrens * 4cde58dbcSMatthew Ahrens * The contents of this file are subject to the terms of the 5cde58dbcSMatthew Ahrens * Common Development and Distribution License (the "License"). 6cde58dbcSMatthew Ahrens * You may not use this file except in compliance with the License. 7cde58dbcSMatthew Ahrens * 8cde58dbcSMatthew Ahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9cde58dbcSMatthew Ahrens * or http://www.opensolaris.org/os/licensing. 10cde58dbcSMatthew Ahrens * See the License for the specific language governing permissions 11cde58dbcSMatthew Ahrens * and limitations under the License. 12cde58dbcSMatthew Ahrens * 13cde58dbcSMatthew Ahrens * When distributing Covered Code, include this CDDL HEADER in each 14cde58dbcSMatthew Ahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15cde58dbcSMatthew Ahrens * If applicable, add the following below this CDDL HEADER, with the 16cde58dbcSMatthew Ahrens * fields enclosed by brackets "[]" replaced with your own identifying 17cde58dbcSMatthew Ahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18cde58dbcSMatthew Ahrens * 19cde58dbcSMatthew Ahrens * CDDL HEADER END 20cde58dbcSMatthew Ahrens */ 21cde58dbcSMatthew Ahrens /* 22cde58dbcSMatthew Ahrens * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. 23f1745736SMatthew Ahrens * Copyright (c) 2012 by Delphix. All rights reserved. 24bc9014e6SJustin Gibbs * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. 25c3d26abcSMatthew Ahrens * Copyright (c) 2014 Integros [integros.com] 26cde58dbcSMatthew Ahrens */ 27cde58dbcSMatthew Ahrens 28cde58dbcSMatthew Ahrens #include <sys/dsl_dataset.h> 29cde58dbcSMatthew Ahrens #include <sys/dmu.h> 30cde58dbcSMatthew Ahrens #include <sys/refcount.h> 31cde58dbcSMatthew Ahrens #include <sys/zap.h> 32cde58dbcSMatthew Ahrens #include <sys/zfs_context.h> 33cde58dbcSMatthew Ahrens #include <sys/dsl_pool.h> 34cde58dbcSMatthew Ahrens 3519b94df9SMatthew Ahrens /* 3619b94df9SMatthew Ahrens * Deadlist concurrency: 3719b94df9SMatthew Ahrens * 3819b94df9SMatthew Ahrens * Deadlists can only be modified from the syncing thread. 3919b94df9SMatthew Ahrens * 4019b94df9SMatthew Ahrens * Except for dsl_deadlist_insert(), it can only be modified with the 4119b94df9SMatthew Ahrens * dp_config_rwlock held with RW_WRITER. 4219b94df9SMatthew Ahrens * 4319b94df9SMatthew Ahrens * The accessors (dsl_deadlist_space() and dsl_deadlist_space_range()) can 4419b94df9SMatthew Ahrens * be called concurrently, from open context, with the dl_config_rwlock held 4519b94df9SMatthew Ahrens * with RW_READER. 4619b94df9SMatthew Ahrens * 4719b94df9SMatthew Ahrens * Therefore, we only need to provide locking between dsl_deadlist_insert() and 4819b94df9SMatthew Ahrens * the accessors, protecting: 4919b94df9SMatthew Ahrens * dl_phys->dl_used,comp,uncomp 5019b94df9SMatthew Ahrens * and protecting the dl_tree from being loaded. 5119b94df9SMatthew Ahrens * The locking is provided by dl_lock. Note that locking on the bpobj_t 5219b94df9SMatthew Ahrens * provides its own locking, and dl_oldfmt is immutable. 5319b94df9SMatthew Ahrens */ 5419b94df9SMatthew Ahrens 55cde58dbcSMatthew Ahrens static int 56cde58dbcSMatthew Ahrens dsl_deadlist_compare(const void *arg1, const void *arg2) 57cde58dbcSMatthew Ahrens { 58cde58dbcSMatthew Ahrens const dsl_deadlist_entry_t *dle1 = arg1; 59cde58dbcSMatthew Ahrens const dsl_deadlist_entry_t *dle2 = arg2; 60cde58dbcSMatthew Ahrens 61cde58dbcSMatthew Ahrens if (dle1->dle_mintxg < dle2->dle_mintxg) 62cde58dbcSMatthew Ahrens return (-1); 63cde58dbcSMatthew Ahrens else if (dle1->dle_mintxg > dle2->dle_mintxg) 64cde58dbcSMatthew Ahrens return (+1); 65cde58dbcSMatthew Ahrens else 66cde58dbcSMatthew Ahrens return (0); 67cde58dbcSMatthew Ahrens } 68cde58dbcSMatthew Ahrens 69cde58dbcSMatthew Ahrens static void 70cde58dbcSMatthew Ahrens dsl_deadlist_load_tree(dsl_deadlist_t *dl) 71cde58dbcSMatthew Ahrens { 72cde58dbcSMatthew Ahrens zap_cursor_t zc; 73cde58dbcSMatthew Ahrens zap_attribute_t za; 74cde58dbcSMatthew Ahrens 75*a3905a45SSerapheim Dimitropoulos ASSERT(MUTEX_HELD(&dl->dl_lock)); 76*a3905a45SSerapheim Dimitropoulos 77cde58dbcSMatthew Ahrens ASSERT(!dl->dl_oldfmt); 78cde58dbcSMatthew Ahrens if (dl->dl_havetree) 79cde58dbcSMatthew Ahrens return; 80cde58dbcSMatthew Ahrens 81cde58dbcSMatthew Ahrens avl_create(&dl->dl_tree, dsl_deadlist_compare, 82cde58dbcSMatthew Ahrens sizeof (dsl_deadlist_entry_t), 83cde58dbcSMatthew Ahrens offsetof(dsl_deadlist_entry_t, dle_node)); 84cde58dbcSMatthew Ahrens for (zap_cursor_init(&zc, dl->dl_os, dl->dl_object); 85cde58dbcSMatthew Ahrens zap_cursor_retrieve(&zc, &za) == 0; 86cde58dbcSMatthew Ahrens zap_cursor_advance(&zc)) { 87cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle = kmem_alloc(sizeof (*dle), KM_SLEEP); 88cde58dbcSMatthew Ahrens dle->dle_mintxg = strtonum(za.za_name, NULL); 89b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_open(&dle->dle_bpobj, dl->dl_os, 90cde58dbcSMatthew Ahrens za.za_first_integer)); 91cde58dbcSMatthew Ahrens avl_add(&dl->dl_tree, dle); 92cde58dbcSMatthew Ahrens } 93cde58dbcSMatthew Ahrens zap_cursor_fini(&zc); 94cde58dbcSMatthew Ahrens dl->dl_havetree = B_TRUE; 95cde58dbcSMatthew Ahrens } 96cde58dbcSMatthew Ahrens 97cde58dbcSMatthew Ahrens void 98cde58dbcSMatthew Ahrens dsl_deadlist_open(dsl_deadlist_t *dl, objset_t *os, uint64_t object) 99cde58dbcSMatthew Ahrens { 100cde58dbcSMatthew Ahrens dmu_object_info_t doi; 101cde58dbcSMatthew Ahrens 102cde58dbcSMatthew Ahrens mutex_init(&dl->dl_lock, NULL, MUTEX_DEFAULT, NULL); 103cde58dbcSMatthew Ahrens dl->dl_os = os; 104cde58dbcSMatthew Ahrens dl->dl_object = object; 105b420f3adSRichard Lowe VERIFY3U(0, ==, dmu_bonus_hold(os, object, dl, &dl->dl_dbuf)); 106cde58dbcSMatthew Ahrens dmu_object_info_from_db(dl->dl_dbuf, &doi); 107cde58dbcSMatthew Ahrens if (doi.doi_type == DMU_OT_BPOBJ) { 108cde58dbcSMatthew Ahrens dmu_buf_rele(dl->dl_dbuf, dl); 109cde58dbcSMatthew Ahrens dl->dl_dbuf = NULL; 110cde58dbcSMatthew Ahrens dl->dl_oldfmt = B_TRUE; 111b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_open(&dl->dl_bpobj, os, object)); 112cde58dbcSMatthew Ahrens return; 113cde58dbcSMatthew Ahrens } 114cde58dbcSMatthew Ahrens 115cde58dbcSMatthew Ahrens dl->dl_oldfmt = B_FALSE; 116cde58dbcSMatthew Ahrens dl->dl_phys = dl->dl_dbuf->db_data; 117cde58dbcSMatthew Ahrens dl->dl_havetree = B_FALSE; 118cde58dbcSMatthew Ahrens } 119cde58dbcSMatthew Ahrens 120cde58dbcSMatthew Ahrens void 121cde58dbcSMatthew Ahrens dsl_deadlist_close(dsl_deadlist_t *dl) 122cde58dbcSMatthew Ahrens { 123cde58dbcSMatthew Ahrens void *cookie = NULL; 124cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle; 125cde58dbcSMatthew Ahrens 126bc9014e6SJustin Gibbs dl->dl_os = NULL; 127bc9014e6SJustin Gibbs 128cde58dbcSMatthew Ahrens if (dl->dl_oldfmt) { 129cde58dbcSMatthew Ahrens dl->dl_oldfmt = B_FALSE; 130cde58dbcSMatthew Ahrens bpobj_close(&dl->dl_bpobj); 131cde58dbcSMatthew Ahrens return; 132cde58dbcSMatthew Ahrens } 133cde58dbcSMatthew Ahrens 134cde58dbcSMatthew Ahrens if (dl->dl_havetree) { 135cde58dbcSMatthew Ahrens while ((dle = avl_destroy_nodes(&dl->dl_tree, &cookie)) 136cde58dbcSMatthew Ahrens != NULL) { 137cde58dbcSMatthew Ahrens bpobj_close(&dle->dle_bpobj); 138cde58dbcSMatthew Ahrens kmem_free(dle, sizeof (*dle)); 139cde58dbcSMatthew Ahrens } 140cde58dbcSMatthew Ahrens avl_destroy(&dl->dl_tree); 141cde58dbcSMatthew Ahrens } 142cde58dbcSMatthew Ahrens dmu_buf_rele(dl->dl_dbuf, dl); 143cde58dbcSMatthew Ahrens mutex_destroy(&dl->dl_lock); 144cde58dbcSMatthew Ahrens dl->dl_dbuf = NULL; 145cde58dbcSMatthew Ahrens dl->dl_phys = NULL; 146cde58dbcSMatthew Ahrens } 147cde58dbcSMatthew Ahrens 148cde58dbcSMatthew Ahrens uint64_t 149cde58dbcSMatthew Ahrens dsl_deadlist_alloc(objset_t *os, dmu_tx_t *tx) 150cde58dbcSMatthew Ahrens { 151cde58dbcSMatthew Ahrens if (spa_version(dmu_objset_spa(os)) < SPA_VERSION_DEADLISTS) 152b5152584SMatthew Ahrens return (bpobj_alloc(os, SPA_OLD_MAXBLOCKSIZE, tx)); 153cde58dbcSMatthew Ahrens return (zap_create(os, DMU_OT_DEADLIST, DMU_OT_DEADLIST_HDR, 154cde58dbcSMatthew Ahrens sizeof (dsl_deadlist_phys_t), tx)); 155cde58dbcSMatthew Ahrens } 156cde58dbcSMatthew Ahrens 157cde58dbcSMatthew Ahrens void 158cde58dbcSMatthew Ahrens dsl_deadlist_free(objset_t *os, uint64_t dlobj, dmu_tx_t *tx) 159cde58dbcSMatthew Ahrens { 160cde58dbcSMatthew Ahrens dmu_object_info_t doi; 161cde58dbcSMatthew Ahrens zap_cursor_t zc; 162cde58dbcSMatthew Ahrens zap_attribute_t za; 163cde58dbcSMatthew Ahrens 164b420f3adSRichard Lowe VERIFY3U(0, ==, dmu_object_info(os, dlobj, &doi)); 165cde58dbcSMatthew Ahrens if (doi.doi_type == DMU_OT_BPOBJ) { 166cde58dbcSMatthew Ahrens bpobj_free(os, dlobj, tx); 167cde58dbcSMatthew Ahrens return; 168cde58dbcSMatthew Ahrens } 169cde58dbcSMatthew Ahrens 170cde58dbcSMatthew Ahrens for (zap_cursor_init(&zc, os, dlobj); 171cde58dbcSMatthew Ahrens zap_cursor_retrieve(&zc, &za) == 0; 172f1745736SMatthew Ahrens zap_cursor_advance(&zc)) { 173f1745736SMatthew Ahrens uint64_t obj = za.za_first_integer; 174f1745736SMatthew Ahrens if (obj == dmu_objset_pool(os)->dp_empty_bpobj) 175f1745736SMatthew Ahrens bpobj_decr_empty(os, tx); 176f1745736SMatthew Ahrens else 177f1745736SMatthew Ahrens bpobj_free(os, obj, tx); 178f1745736SMatthew Ahrens } 179cde58dbcSMatthew Ahrens zap_cursor_fini(&zc); 180b420f3adSRichard Lowe VERIFY3U(0, ==, dmu_object_free(os, dlobj, tx)); 181cde58dbcSMatthew Ahrens } 182cde58dbcSMatthew Ahrens 183f1745736SMatthew Ahrens static void 184f1745736SMatthew Ahrens dle_enqueue(dsl_deadlist_t *dl, dsl_deadlist_entry_t *dle, 185f1745736SMatthew Ahrens const blkptr_t *bp, dmu_tx_t *tx) 186f1745736SMatthew Ahrens { 187*a3905a45SSerapheim Dimitropoulos ASSERT(MUTEX_HELD(&dl->dl_lock)); 188f1745736SMatthew Ahrens if (dle->dle_bpobj.bpo_object == 189f1745736SMatthew Ahrens dmu_objset_pool(dl->dl_os)->dp_empty_bpobj) { 190b5152584SMatthew Ahrens uint64_t obj = bpobj_alloc(dl->dl_os, SPA_OLD_MAXBLOCKSIZE, tx); 191f1745736SMatthew Ahrens bpobj_close(&dle->dle_bpobj); 192f1745736SMatthew Ahrens bpobj_decr_empty(dl->dl_os, tx); 193f1745736SMatthew Ahrens VERIFY3U(0, ==, bpobj_open(&dle->dle_bpobj, dl->dl_os, obj)); 194f1745736SMatthew Ahrens VERIFY3U(0, ==, zap_update_int_key(dl->dl_os, dl->dl_object, 195f1745736SMatthew Ahrens dle->dle_mintxg, obj, tx)); 196f1745736SMatthew Ahrens } 197f1745736SMatthew Ahrens bpobj_enqueue(&dle->dle_bpobj, bp, tx); 198f1745736SMatthew Ahrens } 199f1745736SMatthew Ahrens 200f1745736SMatthew Ahrens static void 201f1745736SMatthew Ahrens dle_enqueue_subobj(dsl_deadlist_t *dl, dsl_deadlist_entry_t *dle, 202f1745736SMatthew Ahrens uint64_t obj, dmu_tx_t *tx) 203f1745736SMatthew Ahrens { 204*a3905a45SSerapheim Dimitropoulos ASSERT(MUTEX_HELD(&dl->dl_lock)); 205f1745736SMatthew Ahrens if (dle->dle_bpobj.bpo_object != 206f1745736SMatthew Ahrens dmu_objset_pool(dl->dl_os)->dp_empty_bpobj) { 207f1745736SMatthew Ahrens bpobj_enqueue_subobj(&dle->dle_bpobj, obj, tx); 208f1745736SMatthew Ahrens } else { 209f1745736SMatthew Ahrens bpobj_close(&dle->dle_bpobj); 210f1745736SMatthew Ahrens bpobj_decr_empty(dl->dl_os, tx); 211f1745736SMatthew Ahrens VERIFY3U(0, ==, bpobj_open(&dle->dle_bpobj, dl->dl_os, obj)); 212f1745736SMatthew Ahrens VERIFY3U(0, ==, zap_update_int_key(dl->dl_os, dl->dl_object, 213f1745736SMatthew Ahrens dle->dle_mintxg, obj, tx)); 214f1745736SMatthew Ahrens } 215f1745736SMatthew Ahrens } 216f1745736SMatthew Ahrens 217cde58dbcSMatthew Ahrens void 218cde58dbcSMatthew Ahrens dsl_deadlist_insert(dsl_deadlist_t *dl, const blkptr_t *bp, dmu_tx_t *tx) 219cde58dbcSMatthew Ahrens { 220cde58dbcSMatthew Ahrens dsl_deadlist_entry_t dle_tofind; 221cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle; 222cde58dbcSMatthew Ahrens avl_index_t where; 223cde58dbcSMatthew Ahrens 224cde58dbcSMatthew Ahrens if (dl->dl_oldfmt) { 225cde58dbcSMatthew Ahrens bpobj_enqueue(&dl->dl_bpobj, bp, tx); 226cde58dbcSMatthew Ahrens return; 227cde58dbcSMatthew Ahrens } 228cde58dbcSMatthew Ahrens 229*a3905a45SSerapheim Dimitropoulos mutex_enter(&dl->dl_lock); 230cde58dbcSMatthew Ahrens dsl_deadlist_load_tree(dl); 231cde58dbcSMatthew Ahrens 232cde58dbcSMatthew Ahrens dmu_buf_will_dirty(dl->dl_dbuf, tx); 233cde58dbcSMatthew Ahrens dl->dl_phys->dl_used += 234cde58dbcSMatthew Ahrens bp_get_dsize_sync(dmu_objset_spa(dl->dl_os), bp); 235cde58dbcSMatthew Ahrens dl->dl_phys->dl_comp += BP_GET_PSIZE(bp); 236cde58dbcSMatthew Ahrens dl->dl_phys->dl_uncomp += BP_GET_UCSIZE(bp); 237cde58dbcSMatthew Ahrens 238cde58dbcSMatthew Ahrens dle_tofind.dle_mintxg = bp->blk_birth; 239cde58dbcSMatthew Ahrens dle = avl_find(&dl->dl_tree, &dle_tofind, &where); 240cde58dbcSMatthew Ahrens if (dle == NULL) 241cde58dbcSMatthew Ahrens dle = avl_nearest(&dl->dl_tree, where, AVL_BEFORE); 242cde58dbcSMatthew Ahrens else 243cde58dbcSMatthew Ahrens dle = AVL_PREV(&dl->dl_tree, dle); 244f1745736SMatthew Ahrens dle_enqueue(dl, dle, bp, tx); 245*a3905a45SSerapheim Dimitropoulos mutex_exit(&dl->dl_lock); 246cde58dbcSMatthew Ahrens } 247cde58dbcSMatthew Ahrens 248cde58dbcSMatthew Ahrens /* 249cde58dbcSMatthew Ahrens * Insert new key in deadlist, which must be > all current entries. 250cde58dbcSMatthew Ahrens * mintxg is not inclusive. 251cde58dbcSMatthew Ahrens */ 252cde58dbcSMatthew Ahrens void 253cde58dbcSMatthew Ahrens dsl_deadlist_add_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx) 254cde58dbcSMatthew Ahrens { 255cde58dbcSMatthew Ahrens uint64_t obj; 256cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle; 257cde58dbcSMatthew Ahrens 258cde58dbcSMatthew Ahrens if (dl->dl_oldfmt) 259cde58dbcSMatthew Ahrens return; 260cde58dbcSMatthew Ahrens 261cde58dbcSMatthew Ahrens dle = kmem_alloc(sizeof (*dle), KM_SLEEP); 262cde58dbcSMatthew Ahrens dle->dle_mintxg = mintxg; 263*a3905a45SSerapheim Dimitropoulos 264*a3905a45SSerapheim Dimitropoulos mutex_enter(&dl->dl_lock); 265*a3905a45SSerapheim Dimitropoulos dsl_deadlist_load_tree(dl); 266*a3905a45SSerapheim Dimitropoulos 267b5152584SMatthew Ahrens obj = bpobj_alloc_empty(dl->dl_os, SPA_OLD_MAXBLOCKSIZE, tx); 268b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_open(&dle->dle_bpobj, dl->dl_os, obj)); 269cde58dbcSMatthew Ahrens avl_add(&dl->dl_tree, dle); 270cde58dbcSMatthew Ahrens 271b420f3adSRichard Lowe VERIFY3U(0, ==, zap_add_int_key(dl->dl_os, dl->dl_object, 272cde58dbcSMatthew Ahrens mintxg, obj, tx)); 273*a3905a45SSerapheim Dimitropoulos mutex_exit(&dl->dl_lock); 274cde58dbcSMatthew Ahrens } 275cde58dbcSMatthew Ahrens 276cde58dbcSMatthew Ahrens /* 277cde58dbcSMatthew Ahrens * Remove this key, merging its entries into the previous key. 278cde58dbcSMatthew Ahrens */ 279cde58dbcSMatthew Ahrens void 280cde58dbcSMatthew Ahrens dsl_deadlist_remove_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx) 281cde58dbcSMatthew Ahrens { 282cde58dbcSMatthew Ahrens dsl_deadlist_entry_t dle_tofind; 283cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle, *dle_prev; 284cde58dbcSMatthew Ahrens 285cde58dbcSMatthew Ahrens if (dl->dl_oldfmt) 286cde58dbcSMatthew Ahrens return; 287cde58dbcSMatthew Ahrens 288*a3905a45SSerapheim Dimitropoulos mutex_enter(&dl->dl_lock); 289cde58dbcSMatthew Ahrens dsl_deadlist_load_tree(dl); 290cde58dbcSMatthew Ahrens 291cde58dbcSMatthew Ahrens dle_tofind.dle_mintxg = mintxg; 292cde58dbcSMatthew Ahrens dle = avl_find(&dl->dl_tree, &dle_tofind, NULL); 293cde58dbcSMatthew Ahrens dle_prev = AVL_PREV(&dl->dl_tree, dle); 294cde58dbcSMatthew Ahrens 295f1745736SMatthew Ahrens dle_enqueue_subobj(dl, dle_prev, dle->dle_bpobj.bpo_object, tx); 296cde58dbcSMatthew Ahrens 297cde58dbcSMatthew Ahrens avl_remove(&dl->dl_tree, dle); 298cde58dbcSMatthew Ahrens bpobj_close(&dle->dle_bpobj); 299cde58dbcSMatthew Ahrens kmem_free(dle, sizeof (*dle)); 300cde58dbcSMatthew Ahrens 301b420f3adSRichard Lowe VERIFY3U(0, ==, zap_remove_int(dl->dl_os, dl->dl_object, mintxg, tx)); 302*a3905a45SSerapheim Dimitropoulos mutex_exit(&dl->dl_lock); 303cde58dbcSMatthew Ahrens } 304cde58dbcSMatthew Ahrens 305cde58dbcSMatthew Ahrens /* 306cde58dbcSMatthew Ahrens * Walk ds's snapshots to regenerate generate ZAP & AVL. 307cde58dbcSMatthew Ahrens */ 308cde58dbcSMatthew Ahrens static void 309cde58dbcSMatthew Ahrens dsl_deadlist_regenerate(objset_t *os, uint64_t dlobj, 310cde58dbcSMatthew Ahrens uint64_t mrs_obj, dmu_tx_t *tx) 311cde58dbcSMatthew Ahrens { 312cde58dbcSMatthew Ahrens dsl_deadlist_t dl; 313cde58dbcSMatthew Ahrens dsl_pool_t *dp = dmu_objset_pool(os); 314cde58dbcSMatthew Ahrens 315cde58dbcSMatthew Ahrens dsl_deadlist_open(&dl, os, dlobj); 316cde58dbcSMatthew Ahrens if (dl.dl_oldfmt) { 317cde58dbcSMatthew Ahrens dsl_deadlist_close(&dl); 318cde58dbcSMatthew Ahrens return; 319cde58dbcSMatthew Ahrens } 320cde58dbcSMatthew Ahrens 321cde58dbcSMatthew Ahrens while (mrs_obj != 0) { 322cde58dbcSMatthew Ahrens dsl_dataset_t *ds; 323b420f3adSRichard Lowe VERIFY3U(0, ==, dsl_dataset_hold_obj(dp, mrs_obj, FTAG, &ds)); 324c1379625SJustin T. Gibbs dsl_deadlist_add_key(&dl, 325c1379625SJustin T. Gibbs dsl_dataset_phys(ds)->ds_prev_snap_txg, tx); 326c1379625SJustin T. Gibbs mrs_obj = dsl_dataset_phys(ds)->ds_prev_snap_obj; 327cde58dbcSMatthew Ahrens dsl_dataset_rele(ds, FTAG); 328cde58dbcSMatthew Ahrens } 329cde58dbcSMatthew Ahrens dsl_deadlist_close(&dl); 330cde58dbcSMatthew Ahrens } 331cde58dbcSMatthew Ahrens 332cde58dbcSMatthew Ahrens uint64_t 333cde58dbcSMatthew Ahrens dsl_deadlist_clone(dsl_deadlist_t *dl, uint64_t maxtxg, 334cde58dbcSMatthew Ahrens uint64_t mrs_obj, dmu_tx_t *tx) 335cde58dbcSMatthew Ahrens { 336cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle; 337cde58dbcSMatthew Ahrens uint64_t newobj; 338cde58dbcSMatthew Ahrens 339cde58dbcSMatthew Ahrens newobj = dsl_deadlist_alloc(dl->dl_os, tx); 340cde58dbcSMatthew Ahrens 341cde58dbcSMatthew Ahrens if (dl->dl_oldfmt) { 342cde58dbcSMatthew Ahrens dsl_deadlist_regenerate(dl->dl_os, newobj, mrs_obj, tx); 343cde58dbcSMatthew Ahrens return (newobj); 344cde58dbcSMatthew Ahrens } 345cde58dbcSMatthew Ahrens 346*a3905a45SSerapheim Dimitropoulos mutex_enter(&dl->dl_lock); 347cde58dbcSMatthew Ahrens dsl_deadlist_load_tree(dl); 348cde58dbcSMatthew Ahrens 349cde58dbcSMatthew Ahrens for (dle = avl_first(&dl->dl_tree); dle; 350cde58dbcSMatthew Ahrens dle = AVL_NEXT(&dl->dl_tree, dle)) { 351cde58dbcSMatthew Ahrens uint64_t obj; 352cde58dbcSMatthew Ahrens 353cde58dbcSMatthew Ahrens if (dle->dle_mintxg >= maxtxg) 354cde58dbcSMatthew Ahrens break; 355cde58dbcSMatthew Ahrens 356b5152584SMatthew Ahrens obj = bpobj_alloc_empty(dl->dl_os, SPA_OLD_MAXBLOCKSIZE, tx); 357b420f3adSRichard Lowe VERIFY3U(0, ==, zap_add_int_key(dl->dl_os, newobj, 358cde58dbcSMatthew Ahrens dle->dle_mintxg, obj, tx)); 359cde58dbcSMatthew Ahrens } 360*a3905a45SSerapheim Dimitropoulos mutex_exit(&dl->dl_lock); 361cde58dbcSMatthew Ahrens return (newobj); 362cde58dbcSMatthew Ahrens } 363cde58dbcSMatthew Ahrens 364cde58dbcSMatthew Ahrens void 365cde58dbcSMatthew Ahrens dsl_deadlist_space(dsl_deadlist_t *dl, 366cde58dbcSMatthew Ahrens uint64_t *usedp, uint64_t *compp, uint64_t *uncompp) 367cde58dbcSMatthew Ahrens { 368cde58dbcSMatthew Ahrens if (dl->dl_oldfmt) { 369b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_space(&dl->dl_bpobj, 370cde58dbcSMatthew Ahrens usedp, compp, uncompp)); 371cde58dbcSMatthew Ahrens return; 372cde58dbcSMatthew Ahrens } 373cde58dbcSMatthew Ahrens 374cde58dbcSMatthew Ahrens mutex_enter(&dl->dl_lock); 375cde58dbcSMatthew Ahrens *usedp = dl->dl_phys->dl_used; 376cde58dbcSMatthew Ahrens *compp = dl->dl_phys->dl_comp; 377cde58dbcSMatthew Ahrens *uncompp = dl->dl_phys->dl_uncomp; 378cde58dbcSMatthew Ahrens mutex_exit(&dl->dl_lock); 379cde58dbcSMatthew Ahrens } 380cde58dbcSMatthew Ahrens 381cde58dbcSMatthew Ahrens /* 382cde58dbcSMatthew Ahrens * return space used in the range (mintxg, maxtxg]. 383cde58dbcSMatthew Ahrens * Includes maxtxg, does not include mintxg. 384cde58dbcSMatthew Ahrens * mintxg and maxtxg must both be keys in the deadlist (unless maxtxg is 38519b94df9SMatthew Ahrens * larger than any bp in the deadlist (eg. UINT64_MAX)). 386cde58dbcSMatthew Ahrens */ 387cde58dbcSMatthew Ahrens void 388cde58dbcSMatthew Ahrens dsl_deadlist_space_range(dsl_deadlist_t *dl, uint64_t mintxg, uint64_t maxtxg, 389cde58dbcSMatthew Ahrens uint64_t *usedp, uint64_t *compp, uint64_t *uncompp) 390cde58dbcSMatthew Ahrens { 3918ac09fceSRichard Lowe dsl_deadlist_entry_t *dle; 39219b94df9SMatthew Ahrens dsl_deadlist_entry_t dle_tofind; 393cde58dbcSMatthew Ahrens avl_index_t where; 394cde58dbcSMatthew Ahrens 395cde58dbcSMatthew Ahrens if (dl->dl_oldfmt) { 396b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_space_range(&dl->dl_bpobj, 397cde58dbcSMatthew Ahrens mintxg, maxtxg, usedp, compp, uncompp)); 398cde58dbcSMatthew Ahrens return; 399cde58dbcSMatthew Ahrens } 400cde58dbcSMatthew Ahrens 401cde58dbcSMatthew Ahrens *usedp = *compp = *uncompp = 0; 402cde58dbcSMatthew Ahrens 40319b94df9SMatthew Ahrens mutex_enter(&dl->dl_lock); 40419b94df9SMatthew Ahrens dsl_deadlist_load_tree(dl); 405cde58dbcSMatthew Ahrens dle_tofind.dle_mintxg = mintxg; 406cde58dbcSMatthew Ahrens dle = avl_find(&dl->dl_tree, &dle_tofind, &where); 407cde58dbcSMatthew Ahrens /* 408cde58dbcSMatthew Ahrens * If we don't find this mintxg, there shouldn't be anything 409cde58dbcSMatthew Ahrens * after it either. 410cde58dbcSMatthew Ahrens */ 411cde58dbcSMatthew Ahrens ASSERT(dle != NULL || 412cde58dbcSMatthew Ahrens avl_nearest(&dl->dl_tree, where, AVL_AFTER) == NULL); 41319b94df9SMatthew Ahrens 414cde58dbcSMatthew Ahrens for (; dle && dle->dle_mintxg < maxtxg; 415cde58dbcSMatthew Ahrens dle = AVL_NEXT(&dl->dl_tree, dle)) { 416cde58dbcSMatthew Ahrens uint64_t used, comp, uncomp; 417cde58dbcSMatthew Ahrens 418b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_space(&dle->dle_bpobj, 419cde58dbcSMatthew Ahrens &used, &comp, &uncomp)); 420cde58dbcSMatthew Ahrens 421cde58dbcSMatthew Ahrens *usedp += used; 422cde58dbcSMatthew Ahrens *compp += comp; 423cde58dbcSMatthew Ahrens *uncompp += uncomp; 424cde58dbcSMatthew Ahrens } 42519b94df9SMatthew Ahrens mutex_exit(&dl->dl_lock); 426cde58dbcSMatthew Ahrens } 427cde58dbcSMatthew Ahrens 428cde58dbcSMatthew Ahrens static void 429cde58dbcSMatthew Ahrens dsl_deadlist_insert_bpobj(dsl_deadlist_t *dl, uint64_t obj, uint64_t birth, 430cde58dbcSMatthew Ahrens dmu_tx_t *tx) 431cde58dbcSMatthew Ahrens { 432cde58dbcSMatthew Ahrens dsl_deadlist_entry_t dle_tofind; 433cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle; 434cde58dbcSMatthew Ahrens avl_index_t where; 435cde58dbcSMatthew Ahrens uint64_t used, comp, uncomp; 436cde58dbcSMatthew Ahrens bpobj_t bpo; 437cde58dbcSMatthew Ahrens 438*a3905a45SSerapheim Dimitropoulos ASSERT(MUTEX_HELD(&dl->dl_lock)); 439*a3905a45SSerapheim Dimitropoulos 440b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_open(&bpo, dl->dl_os, obj)); 441b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_space(&bpo, &used, &comp, &uncomp)); 442cde58dbcSMatthew Ahrens bpobj_close(&bpo); 443cde58dbcSMatthew Ahrens 444cde58dbcSMatthew Ahrens dsl_deadlist_load_tree(dl); 445cde58dbcSMatthew Ahrens 446cde58dbcSMatthew Ahrens dmu_buf_will_dirty(dl->dl_dbuf, tx); 447cde58dbcSMatthew Ahrens dl->dl_phys->dl_used += used; 448cde58dbcSMatthew Ahrens dl->dl_phys->dl_comp += comp; 449cde58dbcSMatthew Ahrens dl->dl_phys->dl_uncomp += uncomp; 450cde58dbcSMatthew Ahrens 451cde58dbcSMatthew Ahrens dle_tofind.dle_mintxg = birth; 452cde58dbcSMatthew Ahrens dle = avl_find(&dl->dl_tree, &dle_tofind, &where); 453cde58dbcSMatthew Ahrens if (dle == NULL) 454cde58dbcSMatthew Ahrens dle = avl_nearest(&dl->dl_tree, where, AVL_BEFORE); 455f1745736SMatthew Ahrens dle_enqueue_subobj(dl, dle, obj, tx); 456cde58dbcSMatthew Ahrens } 457cde58dbcSMatthew Ahrens 458cde58dbcSMatthew Ahrens static int 459cde58dbcSMatthew Ahrens dsl_deadlist_insert_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 460cde58dbcSMatthew Ahrens { 461cde58dbcSMatthew Ahrens dsl_deadlist_t *dl = arg; 462cde58dbcSMatthew Ahrens dsl_deadlist_insert(dl, bp, tx); 463cde58dbcSMatthew Ahrens return (0); 464cde58dbcSMatthew Ahrens } 465cde58dbcSMatthew Ahrens 466cde58dbcSMatthew Ahrens /* 467cde58dbcSMatthew Ahrens * Merge the deadlist pointed to by 'obj' into dl. obj will be left as 468cde58dbcSMatthew Ahrens * an empty deadlist. 469cde58dbcSMatthew Ahrens */ 470cde58dbcSMatthew Ahrens void 471cde58dbcSMatthew Ahrens dsl_deadlist_merge(dsl_deadlist_t *dl, uint64_t obj, dmu_tx_t *tx) 472cde58dbcSMatthew Ahrens { 473cde58dbcSMatthew Ahrens zap_cursor_t zc; 474cde58dbcSMatthew Ahrens zap_attribute_t za; 475cde58dbcSMatthew Ahrens dmu_buf_t *bonus; 476cde58dbcSMatthew Ahrens dsl_deadlist_phys_t *dlp; 477cde58dbcSMatthew Ahrens dmu_object_info_t doi; 478cde58dbcSMatthew Ahrens 479b420f3adSRichard Lowe VERIFY3U(0, ==, dmu_object_info(dl->dl_os, obj, &doi)); 480cde58dbcSMatthew Ahrens if (doi.doi_type == DMU_OT_BPOBJ) { 481cde58dbcSMatthew Ahrens bpobj_t bpo; 482b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_open(&bpo, dl->dl_os, obj)); 483b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_iterate(&bpo, 484cde58dbcSMatthew Ahrens dsl_deadlist_insert_cb, dl, tx)); 485cde58dbcSMatthew Ahrens bpobj_close(&bpo); 486cde58dbcSMatthew Ahrens return; 487cde58dbcSMatthew Ahrens } 488cde58dbcSMatthew Ahrens 489*a3905a45SSerapheim Dimitropoulos mutex_enter(&dl->dl_lock); 490cde58dbcSMatthew Ahrens for (zap_cursor_init(&zc, dl->dl_os, obj); 491cde58dbcSMatthew Ahrens zap_cursor_retrieve(&zc, &za) == 0; 492cde58dbcSMatthew Ahrens zap_cursor_advance(&zc)) { 493cde58dbcSMatthew Ahrens uint64_t mintxg = strtonum(za.za_name, NULL); 494cde58dbcSMatthew Ahrens dsl_deadlist_insert_bpobj(dl, za.za_first_integer, mintxg, tx); 495b420f3adSRichard Lowe VERIFY3U(0, ==, zap_remove_int(dl->dl_os, obj, mintxg, tx)); 496cde58dbcSMatthew Ahrens } 497cde58dbcSMatthew Ahrens zap_cursor_fini(&zc); 498cde58dbcSMatthew Ahrens 499b420f3adSRichard Lowe VERIFY3U(0, ==, dmu_bonus_hold(dl->dl_os, obj, FTAG, &bonus)); 500cde58dbcSMatthew Ahrens dlp = bonus->db_data; 501cde58dbcSMatthew Ahrens dmu_buf_will_dirty(bonus, tx); 502cde58dbcSMatthew Ahrens bzero(dlp, sizeof (*dlp)); 503cde58dbcSMatthew Ahrens dmu_buf_rele(bonus, FTAG); 504*a3905a45SSerapheim Dimitropoulos mutex_exit(&dl->dl_lock); 505cde58dbcSMatthew Ahrens } 506cde58dbcSMatthew Ahrens 507cde58dbcSMatthew Ahrens /* 508cde58dbcSMatthew Ahrens * Remove entries on dl that are >= mintxg, and put them on the bpobj. 509cde58dbcSMatthew Ahrens */ 510cde58dbcSMatthew Ahrens void 511cde58dbcSMatthew Ahrens dsl_deadlist_move_bpobj(dsl_deadlist_t *dl, bpobj_t *bpo, uint64_t mintxg, 512cde58dbcSMatthew Ahrens dmu_tx_t *tx) 513cde58dbcSMatthew Ahrens { 514cde58dbcSMatthew Ahrens dsl_deadlist_entry_t dle_tofind; 515cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle; 516cde58dbcSMatthew Ahrens avl_index_t where; 517cde58dbcSMatthew Ahrens 518cde58dbcSMatthew Ahrens ASSERT(!dl->dl_oldfmt); 519*a3905a45SSerapheim Dimitropoulos 520*a3905a45SSerapheim Dimitropoulos mutex_enter(&dl->dl_lock); 521cde58dbcSMatthew Ahrens dmu_buf_will_dirty(dl->dl_dbuf, tx); 522cde58dbcSMatthew Ahrens dsl_deadlist_load_tree(dl); 523cde58dbcSMatthew Ahrens 524cde58dbcSMatthew Ahrens dle_tofind.dle_mintxg = mintxg; 525cde58dbcSMatthew Ahrens dle = avl_find(&dl->dl_tree, &dle_tofind, &where); 526cde58dbcSMatthew Ahrens if (dle == NULL) 527cde58dbcSMatthew Ahrens dle = avl_nearest(&dl->dl_tree, where, AVL_AFTER); 528cde58dbcSMatthew Ahrens while (dle) { 529cde58dbcSMatthew Ahrens uint64_t used, comp, uncomp; 530cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle_next; 531cde58dbcSMatthew Ahrens 532cde58dbcSMatthew Ahrens bpobj_enqueue_subobj(bpo, dle->dle_bpobj.bpo_object, tx); 533cde58dbcSMatthew Ahrens 534b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_space(&dle->dle_bpobj, 535cde58dbcSMatthew Ahrens &used, &comp, &uncomp)); 536cde58dbcSMatthew Ahrens ASSERT3U(dl->dl_phys->dl_used, >=, used); 537cde58dbcSMatthew Ahrens ASSERT3U(dl->dl_phys->dl_comp, >=, comp); 538cde58dbcSMatthew Ahrens ASSERT3U(dl->dl_phys->dl_uncomp, >=, uncomp); 539cde58dbcSMatthew Ahrens dl->dl_phys->dl_used -= used; 540cde58dbcSMatthew Ahrens dl->dl_phys->dl_comp -= comp; 541cde58dbcSMatthew Ahrens dl->dl_phys->dl_uncomp -= uncomp; 542cde58dbcSMatthew Ahrens 543b420f3adSRichard Lowe VERIFY3U(0, ==, zap_remove_int(dl->dl_os, dl->dl_object, 544cde58dbcSMatthew Ahrens dle->dle_mintxg, tx)); 545cde58dbcSMatthew Ahrens 546cde58dbcSMatthew Ahrens dle_next = AVL_NEXT(&dl->dl_tree, dle); 547cde58dbcSMatthew Ahrens avl_remove(&dl->dl_tree, dle); 548cde58dbcSMatthew Ahrens bpobj_close(&dle->dle_bpobj); 549cde58dbcSMatthew Ahrens kmem_free(dle, sizeof (*dle)); 550cde58dbcSMatthew Ahrens dle = dle_next; 551cde58dbcSMatthew Ahrens } 552*a3905a45SSerapheim Dimitropoulos mutex_exit(&dl->dl_lock); 553cde58dbcSMatthew Ahrens } 554