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. 235cabbc6bSPrashanth Sreenivasa * Copyright (c) 2012, 2015 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 { 58*c4ab0d3fSGvozden Neskovic const dsl_deadlist_entry_t *dle1 = (const dsl_deadlist_entry_t *)arg1; 59*c4ab0d3fSGvozden Neskovic const dsl_deadlist_entry_t *dle2 = (const dsl_deadlist_entry_t *)arg2; 60cde58dbcSMatthew Ahrens 61*c4ab0d3fSGvozden Neskovic return (AVL_CMP(dle1->dle_mintxg, dle2->dle_mintxg)); 62cde58dbcSMatthew Ahrens } 63cde58dbcSMatthew Ahrens 64cde58dbcSMatthew Ahrens static void 65cde58dbcSMatthew Ahrens dsl_deadlist_load_tree(dsl_deadlist_t *dl) 66cde58dbcSMatthew Ahrens { 67cde58dbcSMatthew Ahrens zap_cursor_t zc; 68cde58dbcSMatthew Ahrens zap_attribute_t za; 69cde58dbcSMatthew Ahrens 70a3905a45SSerapheim Dimitropoulos ASSERT(MUTEX_HELD(&dl->dl_lock)); 71a3905a45SSerapheim Dimitropoulos 72cde58dbcSMatthew Ahrens ASSERT(!dl->dl_oldfmt); 73cde58dbcSMatthew Ahrens if (dl->dl_havetree) 74cde58dbcSMatthew Ahrens return; 75cde58dbcSMatthew Ahrens 76cde58dbcSMatthew Ahrens avl_create(&dl->dl_tree, dsl_deadlist_compare, 77cde58dbcSMatthew Ahrens sizeof (dsl_deadlist_entry_t), 78cde58dbcSMatthew Ahrens offsetof(dsl_deadlist_entry_t, dle_node)); 79cde58dbcSMatthew Ahrens for (zap_cursor_init(&zc, dl->dl_os, dl->dl_object); 80cde58dbcSMatthew Ahrens zap_cursor_retrieve(&zc, &za) == 0; 81cde58dbcSMatthew Ahrens zap_cursor_advance(&zc)) { 82cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle = kmem_alloc(sizeof (*dle), KM_SLEEP); 834585130bSYuri Pankov dle->dle_mintxg = zfs_strtonum(za.za_name, NULL); 84b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_open(&dle->dle_bpobj, dl->dl_os, 85cde58dbcSMatthew Ahrens za.za_first_integer)); 86cde58dbcSMatthew Ahrens avl_add(&dl->dl_tree, dle); 87cde58dbcSMatthew Ahrens } 88cde58dbcSMatthew Ahrens zap_cursor_fini(&zc); 89cde58dbcSMatthew Ahrens dl->dl_havetree = B_TRUE; 90cde58dbcSMatthew Ahrens } 91cde58dbcSMatthew Ahrens 92cde58dbcSMatthew Ahrens void 93cde58dbcSMatthew Ahrens dsl_deadlist_open(dsl_deadlist_t *dl, objset_t *os, uint64_t object) 94cde58dbcSMatthew Ahrens { 95cde58dbcSMatthew Ahrens dmu_object_info_t doi; 96cde58dbcSMatthew Ahrens 975cabbc6bSPrashanth Sreenivasa ASSERT(!dsl_deadlist_is_open(dl)); 985cabbc6bSPrashanth Sreenivasa 99cde58dbcSMatthew Ahrens mutex_init(&dl->dl_lock, NULL, MUTEX_DEFAULT, NULL); 100cde58dbcSMatthew Ahrens dl->dl_os = os; 101cde58dbcSMatthew Ahrens dl->dl_object = object; 102b420f3adSRichard Lowe VERIFY3U(0, ==, dmu_bonus_hold(os, object, dl, &dl->dl_dbuf)); 103cde58dbcSMatthew Ahrens dmu_object_info_from_db(dl->dl_dbuf, &doi); 104cde58dbcSMatthew Ahrens if (doi.doi_type == DMU_OT_BPOBJ) { 105cde58dbcSMatthew Ahrens dmu_buf_rele(dl->dl_dbuf, dl); 106cde58dbcSMatthew Ahrens dl->dl_dbuf = NULL; 107cde58dbcSMatthew Ahrens dl->dl_oldfmt = B_TRUE; 108b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_open(&dl->dl_bpobj, os, object)); 109cde58dbcSMatthew Ahrens return; 110cde58dbcSMatthew Ahrens } 111cde58dbcSMatthew Ahrens 112cde58dbcSMatthew Ahrens dl->dl_oldfmt = B_FALSE; 113cde58dbcSMatthew Ahrens dl->dl_phys = dl->dl_dbuf->db_data; 114cde58dbcSMatthew Ahrens dl->dl_havetree = B_FALSE; 115cde58dbcSMatthew Ahrens } 116cde58dbcSMatthew Ahrens 1175cabbc6bSPrashanth Sreenivasa boolean_t 1185cabbc6bSPrashanth Sreenivasa dsl_deadlist_is_open(dsl_deadlist_t *dl) 1195cabbc6bSPrashanth Sreenivasa { 1205cabbc6bSPrashanth Sreenivasa return (dl->dl_os != NULL); 1215cabbc6bSPrashanth Sreenivasa } 1225cabbc6bSPrashanth Sreenivasa 123cde58dbcSMatthew Ahrens void 124cde58dbcSMatthew Ahrens dsl_deadlist_close(dsl_deadlist_t *dl) 125cde58dbcSMatthew Ahrens { 126cde58dbcSMatthew Ahrens void *cookie = NULL; 127cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle; 128cde58dbcSMatthew Ahrens 1295cabbc6bSPrashanth Sreenivasa ASSERT(dsl_deadlist_is_open(dl)); 130bc9014e6SJustin Gibbs 131cde58dbcSMatthew Ahrens if (dl->dl_oldfmt) { 132cde58dbcSMatthew Ahrens dl->dl_oldfmt = B_FALSE; 133cde58dbcSMatthew Ahrens bpobj_close(&dl->dl_bpobj); 1345cabbc6bSPrashanth Sreenivasa dl->dl_os = NULL; 1355cabbc6bSPrashanth Sreenivasa dl->dl_object = 0; 136cde58dbcSMatthew Ahrens return; 137cde58dbcSMatthew Ahrens } 138cde58dbcSMatthew Ahrens 139cde58dbcSMatthew Ahrens if (dl->dl_havetree) { 140cde58dbcSMatthew Ahrens while ((dle = avl_destroy_nodes(&dl->dl_tree, &cookie)) 141cde58dbcSMatthew Ahrens != NULL) { 142cde58dbcSMatthew Ahrens bpobj_close(&dle->dle_bpobj); 143cde58dbcSMatthew Ahrens kmem_free(dle, sizeof (*dle)); 144cde58dbcSMatthew Ahrens } 145cde58dbcSMatthew Ahrens avl_destroy(&dl->dl_tree); 146cde58dbcSMatthew Ahrens } 147cde58dbcSMatthew Ahrens dmu_buf_rele(dl->dl_dbuf, dl); 148cde58dbcSMatthew Ahrens mutex_destroy(&dl->dl_lock); 149cde58dbcSMatthew Ahrens dl->dl_dbuf = NULL; 150cde58dbcSMatthew Ahrens dl->dl_phys = NULL; 1515cabbc6bSPrashanth Sreenivasa dl->dl_os = NULL; 1525cabbc6bSPrashanth Sreenivasa dl->dl_object = 0; 153cde58dbcSMatthew Ahrens } 154cde58dbcSMatthew Ahrens 155cde58dbcSMatthew Ahrens uint64_t 156cde58dbcSMatthew Ahrens dsl_deadlist_alloc(objset_t *os, dmu_tx_t *tx) 157cde58dbcSMatthew Ahrens { 158cde58dbcSMatthew Ahrens if (spa_version(dmu_objset_spa(os)) < SPA_VERSION_DEADLISTS) 159b5152584SMatthew Ahrens return (bpobj_alloc(os, SPA_OLD_MAXBLOCKSIZE, tx)); 160cde58dbcSMatthew Ahrens return (zap_create(os, DMU_OT_DEADLIST, DMU_OT_DEADLIST_HDR, 161cde58dbcSMatthew Ahrens sizeof (dsl_deadlist_phys_t), tx)); 162cde58dbcSMatthew Ahrens } 163cde58dbcSMatthew Ahrens 164cde58dbcSMatthew Ahrens void 165cde58dbcSMatthew Ahrens dsl_deadlist_free(objset_t *os, uint64_t dlobj, dmu_tx_t *tx) 166cde58dbcSMatthew Ahrens { 167cde58dbcSMatthew Ahrens dmu_object_info_t doi; 168cde58dbcSMatthew Ahrens zap_cursor_t zc; 169cde58dbcSMatthew Ahrens zap_attribute_t za; 170cde58dbcSMatthew Ahrens 171b420f3adSRichard Lowe VERIFY3U(0, ==, dmu_object_info(os, dlobj, &doi)); 172cde58dbcSMatthew Ahrens if (doi.doi_type == DMU_OT_BPOBJ) { 173cde58dbcSMatthew Ahrens bpobj_free(os, dlobj, tx); 174cde58dbcSMatthew Ahrens return; 175cde58dbcSMatthew Ahrens } 176cde58dbcSMatthew Ahrens 177cde58dbcSMatthew Ahrens for (zap_cursor_init(&zc, os, dlobj); 178cde58dbcSMatthew Ahrens zap_cursor_retrieve(&zc, &za) == 0; 179f1745736SMatthew Ahrens zap_cursor_advance(&zc)) { 180f1745736SMatthew Ahrens uint64_t obj = za.za_first_integer; 181f1745736SMatthew Ahrens if (obj == dmu_objset_pool(os)->dp_empty_bpobj) 182f1745736SMatthew Ahrens bpobj_decr_empty(os, tx); 183f1745736SMatthew Ahrens else 184f1745736SMatthew Ahrens bpobj_free(os, obj, tx); 185f1745736SMatthew Ahrens } 186cde58dbcSMatthew Ahrens zap_cursor_fini(&zc); 187b420f3adSRichard Lowe VERIFY3U(0, ==, dmu_object_free(os, dlobj, tx)); 188cde58dbcSMatthew Ahrens } 189cde58dbcSMatthew Ahrens 190f1745736SMatthew Ahrens static void 191f1745736SMatthew Ahrens dle_enqueue(dsl_deadlist_t *dl, dsl_deadlist_entry_t *dle, 192f1745736SMatthew Ahrens const blkptr_t *bp, dmu_tx_t *tx) 193f1745736SMatthew Ahrens { 194a3905a45SSerapheim Dimitropoulos ASSERT(MUTEX_HELD(&dl->dl_lock)); 195f1745736SMatthew Ahrens if (dle->dle_bpobj.bpo_object == 196f1745736SMatthew Ahrens dmu_objset_pool(dl->dl_os)->dp_empty_bpobj) { 197b5152584SMatthew Ahrens uint64_t obj = bpobj_alloc(dl->dl_os, SPA_OLD_MAXBLOCKSIZE, tx); 198f1745736SMatthew Ahrens bpobj_close(&dle->dle_bpobj); 199f1745736SMatthew Ahrens bpobj_decr_empty(dl->dl_os, tx); 200f1745736SMatthew Ahrens VERIFY3U(0, ==, bpobj_open(&dle->dle_bpobj, dl->dl_os, obj)); 201f1745736SMatthew Ahrens VERIFY3U(0, ==, zap_update_int_key(dl->dl_os, dl->dl_object, 202f1745736SMatthew Ahrens dle->dle_mintxg, obj, tx)); 203f1745736SMatthew Ahrens } 204f1745736SMatthew Ahrens bpobj_enqueue(&dle->dle_bpobj, bp, tx); 205f1745736SMatthew Ahrens } 206f1745736SMatthew Ahrens 207f1745736SMatthew Ahrens static void 208f1745736SMatthew Ahrens dle_enqueue_subobj(dsl_deadlist_t *dl, dsl_deadlist_entry_t *dle, 209f1745736SMatthew Ahrens uint64_t obj, dmu_tx_t *tx) 210f1745736SMatthew Ahrens { 211a3905a45SSerapheim Dimitropoulos ASSERT(MUTEX_HELD(&dl->dl_lock)); 212f1745736SMatthew Ahrens if (dle->dle_bpobj.bpo_object != 213f1745736SMatthew Ahrens dmu_objset_pool(dl->dl_os)->dp_empty_bpobj) { 214f1745736SMatthew Ahrens bpobj_enqueue_subobj(&dle->dle_bpobj, obj, tx); 215f1745736SMatthew Ahrens } else { 216f1745736SMatthew Ahrens bpobj_close(&dle->dle_bpobj); 217f1745736SMatthew Ahrens bpobj_decr_empty(dl->dl_os, tx); 218f1745736SMatthew Ahrens VERIFY3U(0, ==, bpobj_open(&dle->dle_bpobj, dl->dl_os, obj)); 219f1745736SMatthew Ahrens VERIFY3U(0, ==, zap_update_int_key(dl->dl_os, dl->dl_object, 220f1745736SMatthew Ahrens dle->dle_mintxg, obj, tx)); 221f1745736SMatthew Ahrens } 222f1745736SMatthew Ahrens } 223f1745736SMatthew Ahrens 224cde58dbcSMatthew Ahrens void 225cde58dbcSMatthew Ahrens dsl_deadlist_insert(dsl_deadlist_t *dl, const blkptr_t *bp, dmu_tx_t *tx) 226cde58dbcSMatthew Ahrens { 227cde58dbcSMatthew Ahrens dsl_deadlist_entry_t dle_tofind; 228cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle; 229cde58dbcSMatthew Ahrens avl_index_t where; 230cde58dbcSMatthew Ahrens 231cde58dbcSMatthew Ahrens if (dl->dl_oldfmt) { 232cde58dbcSMatthew Ahrens bpobj_enqueue(&dl->dl_bpobj, bp, tx); 233cde58dbcSMatthew Ahrens return; 234cde58dbcSMatthew Ahrens } 235cde58dbcSMatthew Ahrens 236a3905a45SSerapheim Dimitropoulos mutex_enter(&dl->dl_lock); 237cde58dbcSMatthew Ahrens dsl_deadlist_load_tree(dl); 238cde58dbcSMatthew Ahrens 239cde58dbcSMatthew Ahrens dmu_buf_will_dirty(dl->dl_dbuf, tx); 240cde58dbcSMatthew Ahrens dl->dl_phys->dl_used += 241cde58dbcSMatthew Ahrens bp_get_dsize_sync(dmu_objset_spa(dl->dl_os), bp); 242cde58dbcSMatthew Ahrens dl->dl_phys->dl_comp += BP_GET_PSIZE(bp); 243cde58dbcSMatthew Ahrens dl->dl_phys->dl_uncomp += BP_GET_UCSIZE(bp); 244cde58dbcSMatthew Ahrens 245cde58dbcSMatthew Ahrens dle_tofind.dle_mintxg = bp->blk_birth; 246cde58dbcSMatthew Ahrens dle = avl_find(&dl->dl_tree, &dle_tofind, &where); 247cde58dbcSMatthew Ahrens if (dle == NULL) 248cde58dbcSMatthew Ahrens dle = avl_nearest(&dl->dl_tree, where, AVL_BEFORE); 249cde58dbcSMatthew Ahrens else 250cde58dbcSMatthew Ahrens dle = AVL_PREV(&dl->dl_tree, dle); 251f1745736SMatthew Ahrens dle_enqueue(dl, dle, bp, tx); 252a3905a45SSerapheim Dimitropoulos mutex_exit(&dl->dl_lock); 253cde58dbcSMatthew Ahrens } 254cde58dbcSMatthew Ahrens 255cde58dbcSMatthew Ahrens /* 256cde58dbcSMatthew Ahrens * Insert new key in deadlist, which must be > all current entries. 257cde58dbcSMatthew Ahrens * mintxg is not inclusive. 258cde58dbcSMatthew Ahrens */ 259cde58dbcSMatthew Ahrens void 260cde58dbcSMatthew Ahrens dsl_deadlist_add_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx) 261cde58dbcSMatthew Ahrens { 262cde58dbcSMatthew Ahrens uint64_t obj; 263cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle; 264cde58dbcSMatthew Ahrens 265cde58dbcSMatthew Ahrens if (dl->dl_oldfmt) 266cde58dbcSMatthew Ahrens return; 267cde58dbcSMatthew Ahrens 268cde58dbcSMatthew Ahrens dle = kmem_alloc(sizeof (*dle), KM_SLEEP); 269cde58dbcSMatthew Ahrens dle->dle_mintxg = mintxg; 270a3905a45SSerapheim Dimitropoulos 271a3905a45SSerapheim Dimitropoulos mutex_enter(&dl->dl_lock); 272a3905a45SSerapheim Dimitropoulos dsl_deadlist_load_tree(dl); 273a3905a45SSerapheim Dimitropoulos 274b5152584SMatthew Ahrens obj = bpobj_alloc_empty(dl->dl_os, SPA_OLD_MAXBLOCKSIZE, tx); 275b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_open(&dle->dle_bpobj, dl->dl_os, obj)); 276cde58dbcSMatthew Ahrens avl_add(&dl->dl_tree, dle); 277cde58dbcSMatthew Ahrens 278b420f3adSRichard Lowe VERIFY3U(0, ==, zap_add_int_key(dl->dl_os, dl->dl_object, 279cde58dbcSMatthew Ahrens mintxg, obj, tx)); 280a3905a45SSerapheim Dimitropoulos mutex_exit(&dl->dl_lock); 281cde58dbcSMatthew Ahrens } 282cde58dbcSMatthew Ahrens 283cde58dbcSMatthew Ahrens /* 284cde58dbcSMatthew Ahrens * Remove this key, merging its entries into the previous key. 285cde58dbcSMatthew Ahrens */ 286cde58dbcSMatthew Ahrens void 287cde58dbcSMatthew Ahrens dsl_deadlist_remove_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx) 288cde58dbcSMatthew Ahrens { 289cde58dbcSMatthew Ahrens dsl_deadlist_entry_t dle_tofind; 290cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle, *dle_prev; 291cde58dbcSMatthew Ahrens 292cde58dbcSMatthew Ahrens if (dl->dl_oldfmt) 293cde58dbcSMatthew Ahrens return; 294cde58dbcSMatthew Ahrens 295a3905a45SSerapheim Dimitropoulos mutex_enter(&dl->dl_lock); 296cde58dbcSMatthew Ahrens dsl_deadlist_load_tree(dl); 297cde58dbcSMatthew Ahrens 298cde58dbcSMatthew Ahrens dle_tofind.dle_mintxg = mintxg; 299cde58dbcSMatthew Ahrens dle = avl_find(&dl->dl_tree, &dle_tofind, NULL); 300cde58dbcSMatthew Ahrens dle_prev = AVL_PREV(&dl->dl_tree, dle); 301cde58dbcSMatthew Ahrens 302f1745736SMatthew Ahrens dle_enqueue_subobj(dl, dle_prev, dle->dle_bpobj.bpo_object, tx); 303cde58dbcSMatthew Ahrens 304cde58dbcSMatthew Ahrens avl_remove(&dl->dl_tree, dle); 305cde58dbcSMatthew Ahrens bpobj_close(&dle->dle_bpobj); 306cde58dbcSMatthew Ahrens kmem_free(dle, sizeof (*dle)); 307cde58dbcSMatthew Ahrens 308b420f3adSRichard Lowe VERIFY3U(0, ==, zap_remove_int(dl->dl_os, dl->dl_object, mintxg, tx)); 309a3905a45SSerapheim Dimitropoulos mutex_exit(&dl->dl_lock); 310cde58dbcSMatthew Ahrens } 311cde58dbcSMatthew Ahrens 312cde58dbcSMatthew Ahrens /* 313cde58dbcSMatthew Ahrens * Walk ds's snapshots to regenerate generate ZAP & AVL. 314cde58dbcSMatthew Ahrens */ 315cde58dbcSMatthew Ahrens static void 316cde58dbcSMatthew Ahrens dsl_deadlist_regenerate(objset_t *os, uint64_t dlobj, 317cde58dbcSMatthew Ahrens uint64_t mrs_obj, dmu_tx_t *tx) 318cde58dbcSMatthew Ahrens { 3195cabbc6bSPrashanth Sreenivasa dsl_deadlist_t dl = { 0 }; 320cde58dbcSMatthew Ahrens dsl_pool_t *dp = dmu_objset_pool(os); 321cde58dbcSMatthew Ahrens 322cde58dbcSMatthew Ahrens dsl_deadlist_open(&dl, os, dlobj); 323cde58dbcSMatthew Ahrens if (dl.dl_oldfmt) { 324cde58dbcSMatthew Ahrens dsl_deadlist_close(&dl); 325cde58dbcSMatthew Ahrens return; 326cde58dbcSMatthew Ahrens } 327cde58dbcSMatthew Ahrens 328cde58dbcSMatthew Ahrens while (mrs_obj != 0) { 329cde58dbcSMatthew Ahrens dsl_dataset_t *ds; 330b420f3adSRichard Lowe VERIFY3U(0, ==, dsl_dataset_hold_obj(dp, mrs_obj, FTAG, &ds)); 331c1379625SJustin T. Gibbs dsl_deadlist_add_key(&dl, 332c1379625SJustin T. Gibbs dsl_dataset_phys(ds)->ds_prev_snap_txg, tx); 333c1379625SJustin T. Gibbs mrs_obj = dsl_dataset_phys(ds)->ds_prev_snap_obj; 334cde58dbcSMatthew Ahrens dsl_dataset_rele(ds, FTAG); 335cde58dbcSMatthew Ahrens } 336cde58dbcSMatthew Ahrens dsl_deadlist_close(&dl); 337cde58dbcSMatthew Ahrens } 338cde58dbcSMatthew Ahrens 339cde58dbcSMatthew Ahrens uint64_t 340cde58dbcSMatthew Ahrens dsl_deadlist_clone(dsl_deadlist_t *dl, uint64_t maxtxg, 341cde58dbcSMatthew Ahrens uint64_t mrs_obj, dmu_tx_t *tx) 342cde58dbcSMatthew Ahrens { 343cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle; 344cde58dbcSMatthew Ahrens uint64_t newobj; 345cde58dbcSMatthew Ahrens 346cde58dbcSMatthew Ahrens newobj = dsl_deadlist_alloc(dl->dl_os, tx); 347cde58dbcSMatthew Ahrens 348cde58dbcSMatthew Ahrens if (dl->dl_oldfmt) { 349cde58dbcSMatthew Ahrens dsl_deadlist_regenerate(dl->dl_os, newobj, mrs_obj, tx); 350cde58dbcSMatthew Ahrens return (newobj); 351cde58dbcSMatthew Ahrens } 352cde58dbcSMatthew Ahrens 353a3905a45SSerapheim Dimitropoulos mutex_enter(&dl->dl_lock); 354cde58dbcSMatthew Ahrens dsl_deadlist_load_tree(dl); 355cde58dbcSMatthew Ahrens 356cde58dbcSMatthew Ahrens for (dle = avl_first(&dl->dl_tree); dle; 357cde58dbcSMatthew Ahrens dle = AVL_NEXT(&dl->dl_tree, dle)) { 358cde58dbcSMatthew Ahrens uint64_t obj; 359cde58dbcSMatthew Ahrens 360cde58dbcSMatthew Ahrens if (dle->dle_mintxg >= maxtxg) 361cde58dbcSMatthew Ahrens break; 362cde58dbcSMatthew Ahrens 363b5152584SMatthew Ahrens obj = bpobj_alloc_empty(dl->dl_os, SPA_OLD_MAXBLOCKSIZE, tx); 364b420f3adSRichard Lowe VERIFY3U(0, ==, zap_add_int_key(dl->dl_os, newobj, 365cde58dbcSMatthew Ahrens dle->dle_mintxg, obj, tx)); 366cde58dbcSMatthew Ahrens } 367a3905a45SSerapheim Dimitropoulos mutex_exit(&dl->dl_lock); 368cde58dbcSMatthew Ahrens return (newobj); 369cde58dbcSMatthew Ahrens } 370cde58dbcSMatthew Ahrens 371cde58dbcSMatthew Ahrens void 372cde58dbcSMatthew Ahrens dsl_deadlist_space(dsl_deadlist_t *dl, 373cde58dbcSMatthew Ahrens uint64_t *usedp, uint64_t *compp, uint64_t *uncompp) 374cde58dbcSMatthew Ahrens { 3755cabbc6bSPrashanth Sreenivasa ASSERT(dsl_deadlist_is_open(dl)); 376cde58dbcSMatthew Ahrens if (dl->dl_oldfmt) { 377b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_space(&dl->dl_bpobj, 378cde58dbcSMatthew Ahrens usedp, compp, uncompp)); 379cde58dbcSMatthew Ahrens return; 380cde58dbcSMatthew Ahrens } 381cde58dbcSMatthew Ahrens 382cde58dbcSMatthew Ahrens mutex_enter(&dl->dl_lock); 383cde58dbcSMatthew Ahrens *usedp = dl->dl_phys->dl_used; 384cde58dbcSMatthew Ahrens *compp = dl->dl_phys->dl_comp; 385cde58dbcSMatthew Ahrens *uncompp = dl->dl_phys->dl_uncomp; 386cde58dbcSMatthew Ahrens mutex_exit(&dl->dl_lock); 387cde58dbcSMatthew Ahrens } 388cde58dbcSMatthew Ahrens 389cde58dbcSMatthew Ahrens /* 390cde58dbcSMatthew Ahrens * return space used in the range (mintxg, maxtxg]. 391cde58dbcSMatthew Ahrens * Includes maxtxg, does not include mintxg. 392cde58dbcSMatthew Ahrens * mintxg and maxtxg must both be keys in the deadlist (unless maxtxg is 39319b94df9SMatthew Ahrens * larger than any bp in the deadlist (eg. UINT64_MAX)). 394cde58dbcSMatthew Ahrens */ 395cde58dbcSMatthew Ahrens void 396cde58dbcSMatthew Ahrens dsl_deadlist_space_range(dsl_deadlist_t *dl, uint64_t mintxg, uint64_t maxtxg, 397cde58dbcSMatthew Ahrens uint64_t *usedp, uint64_t *compp, uint64_t *uncompp) 398cde58dbcSMatthew Ahrens { 3998ac09fceSRichard Lowe dsl_deadlist_entry_t *dle; 40019b94df9SMatthew Ahrens dsl_deadlist_entry_t dle_tofind; 401cde58dbcSMatthew Ahrens avl_index_t where; 402cde58dbcSMatthew Ahrens 403cde58dbcSMatthew Ahrens if (dl->dl_oldfmt) { 404b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_space_range(&dl->dl_bpobj, 405cde58dbcSMatthew Ahrens mintxg, maxtxg, usedp, compp, uncompp)); 406cde58dbcSMatthew Ahrens return; 407cde58dbcSMatthew Ahrens } 408cde58dbcSMatthew Ahrens 409cde58dbcSMatthew Ahrens *usedp = *compp = *uncompp = 0; 410cde58dbcSMatthew Ahrens 41119b94df9SMatthew Ahrens mutex_enter(&dl->dl_lock); 41219b94df9SMatthew Ahrens dsl_deadlist_load_tree(dl); 413cde58dbcSMatthew Ahrens dle_tofind.dle_mintxg = mintxg; 414cde58dbcSMatthew Ahrens dle = avl_find(&dl->dl_tree, &dle_tofind, &where); 415cde58dbcSMatthew Ahrens /* 416cde58dbcSMatthew Ahrens * If we don't find this mintxg, there shouldn't be anything 417cde58dbcSMatthew Ahrens * after it either. 418cde58dbcSMatthew Ahrens */ 419cde58dbcSMatthew Ahrens ASSERT(dle != NULL || 420cde58dbcSMatthew Ahrens avl_nearest(&dl->dl_tree, where, AVL_AFTER) == NULL); 42119b94df9SMatthew Ahrens 422cde58dbcSMatthew Ahrens for (; dle && dle->dle_mintxg < maxtxg; 423cde58dbcSMatthew Ahrens dle = AVL_NEXT(&dl->dl_tree, dle)) { 424cde58dbcSMatthew Ahrens uint64_t used, comp, uncomp; 425cde58dbcSMatthew Ahrens 426b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_space(&dle->dle_bpobj, 427cde58dbcSMatthew Ahrens &used, &comp, &uncomp)); 428cde58dbcSMatthew Ahrens 429cde58dbcSMatthew Ahrens *usedp += used; 430cde58dbcSMatthew Ahrens *compp += comp; 431cde58dbcSMatthew Ahrens *uncompp += uncomp; 432cde58dbcSMatthew Ahrens } 43319b94df9SMatthew Ahrens mutex_exit(&dl->dl_lock); 434cde58dbcSMatthew Ahrens } 435cde58dbcSMatthew Ahrens 436cde58dbcSMatthew Ahrens static void 437cde58dbcSMatthew Ahrens dsl_deadlist_insert_bpobj(dsl_deadlist_t *dl, uint64_t obj, uint64_t birth, 438cde58dbcSMatthew Ahrens dmu_tx_t *tx) 439cde58dbcSMatthew Ahrens { 440cde58dbcSMatthew Ahrens dsl_deadlist_entry_t dle_tofind; 441cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle; 442cde58dbcSMatthew Ahrens avl_index_t where; 443cde58dbcSMatthew Ahrens uint64_t used, comp, uncomp; 444cde58dbcSMatthew Ahrens bpobj_t bpo; 445cde58dbcSMatthew Ahrens 446a3905a45SSerapheim Dimitropoulos ASSERT(MUTEX_HELD(&dl->dl_lock)); 447a3905a45SSerapheim Dimitropoulos 448b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_open(&bpo, dl->dl_os, obj)); 449b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_space(&bpo, &used, &comp, &uncomp)); 450cde58dbcSMatthew Ahrens bpobj_close(&bpo); 451cde58dbcSMatthew Ahrens 452cde58dbcSMatthew Ahrens dsl_deadlist_load_tree(dl); 453cde58dbcSMatthew Ahrens 454cde58dbcSMatthew Ahrens dmu_buf_will_dirty(dl->dl_dbuf, tx); 455cde58dbcSMatthew Ahrens dl->dl_phys->dl_used += used; 456cde58dbcSMatthew Ahrens dl->dl_phys->dl_comp += comp; 457cde58dbcSMatthew Ahrens dl->dl_phys->dl_uncomp += uncomp; 458cde58dbcSMatthew Ahrens 459cde58dbcSMatthew Ahrens dle_tofind.dle_mintxg = birth; 460cde58dbcSMatthew Ahrens dle = avl_find(&dl->dl_tree, &dle_tofind, &where); 461cde58dbcSMatthew Ahrens if (dle == NULL) 462cde58dbcSMatthew Ahrens dle = avl_nearest(&dl->dl_tree, where, AVL_BEFORE); 463f1745736SMatthew Ahrens dle_enqueue_subobj(dl, dle, obj, tx); 464cde58dbcSMatthew Ahrens } 465cde58dbcSMatthew Ahrens 466cde58dbcSMatthew Ahrens static int 467cde58dbcSMatthew Ahrens dsl_deadlist_insert_cb(void *arg, const blkptr_t *bp, dmu_tx_t *tx) 468cde58dbcSMatthew Ahrens { 469cde58dbcSMatthew Ahrens dsl_deadlist_t *dl = arg; 470cde58dbcSMatthew Ahrens dsl_deadlist_insert(dl, bp, tx); 471cde58dbcSMatthew Ahrens return (0); 472cde58dbcSMatthew Ahrens } 473cde58dbcSMatthew Ahrens 474cde58dbcSMatthew Ahrens /* 475cde58dbcSMatthew Ahrens * Merge the deadlist pointed to by 'obj' into dl. obj will be left as 476cde58dbcSMatthew Ahrens * an empty deadlist. 477cde58dbcSMatthew Ahrens */ 478cde58dbcSMatthew Ahrens void 479cde58dbcSMatthew Ahrens dsl_deadlist_merge(dsl_deadlist_t *dl, uint64_t obj, dmu_tx_t *tx) 480cde58dbcSMatthew Ahrens { 481cde58dbcSMatthew Ahrens zap_cursor_t zc; 482cde58dbcSMatthew Ahrens zap_attribute_t za; 483cde58dbcSMatthew Ahrens dmu_buf_t *bonus; 484cde58dbcSMatthew Ahrens dsl_deadlist_phys_t *dlp; 485cde58dbcSMatthew Ahrens dmu_object_info_t doi; 486cde58dbcSMatthew Ahrens 487b420f3adSRichard Lowe VERIFY3U(0, ==, dmu_object_info(dl->dl_os, obj, &doi)); 488cde58dbcSMatthew Ahrens if (doi.doi_type == DMU_OT_BPOBJ) { 489cde58dbcSMatthew Ahrens bpobj_t bpo; 490b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_open(&bpo, dl->dl_os, obj)); 491b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_iterate(&bpo, 492cde58dbcSMatthew Ahrens dsl_deadlist_insert_cb, dl, tx)); 493cde58dbcSMatthew Ahrens bpobj_close(&bpo); 494cde58dbcSMatthew Ahrens return; 495cde58dbcSMatthew Ahrens } 496cde58dbcSMatthew Ahrens 497a3905a45SSerapheim Dimitropoulos mutex_enter(&dl->dl_lock); 498cde58dbcSMatthew Ahrens for (zap_cursor_init(&zc, dl->dl_os, obj); 499cde58dbcSMatthew Ahrens zap_cursor_retrieve(&zc, &za) == 0; 500cde58dbcSMatthew Ahrens zap_cursor_advance(&zc)) { 5014585130bSYuri Pankov uint64_t mintxg = zfs_strtonum(za.za_name, NULL); 502cde58dbcSMatthew Ahrens dsl_deadlist_insert_bpobj(dl, za.za_first_integer, mintxg, tx); 503b420f3adSRichard Lowe VERIFY3U(0, ==, zap_remove_int(dl->dl_os, obj, mintxg, tx)); 504cde58dbcSMatthew Ahrens } 505cde58dbcSMatthew Ahrens zap_cursor_fini(&zc); 506cde58dbcSMatthew Ahrens 507b420f3adSRichard Lowe VERIFY3U(0, ==, dmu_bonus_hold(dl->dl_os, obj, FTAG, &bonus)); 508cde58dbcSMatthew Ahrens dlp = bonus->db_data; 509cde58dbcSMatthew Ahrens dmu_buf_will_dirty(bonus, tx); 510cde58dbcSMatthew Ahrens bzero(dlp, sizeof (*dlp)); 511cde58dbcSMatthew Ahrens dmu_buf_rele(bonus, FTAG); 512a3905a45SSerapheim Dimitropoulos mutex_exit(&dl->dl_lock); 513cde58dbcSMatthew Ahrens } 514cde58dbcSMatthew Ahrens 515cde58dbcSMatthew Ahrens /* 516cde58dbcSMatthew Ahrens * Remove entries on dl that are >= mintxg, and put them on the bpobj. 517cde58dbcSMatthew Ahrens */ 518cde58dbcSMatthew Ahrens void 519cde58dbcSMatthew Ahrens dsl_deadlist_move_bpobj(dsl_deadlist_t *dl, bpobj_t *bpo, uint64_t mintxg, 520cde58dbcSMatthew Ahrens dmu_tx_t *tx) 521cde58dbcSMatthew Ahrens { 522cde58dbcSMatthew Ahrens dsl_deadlist_entry_t dle_tofind; 523cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle; 524cde58dbcSMatthew Ahrens avl_index_t where; 525cde58dbcSMatthew Ahrens 526cde58dbcSMatthew Ahrens ASSERT(!dl->dl_oldfmt); 527a3905a45SSerapheim Dimitropoulos 528a3905a45SSerapheim Dimitropoulos mutex_enter(&dl->dl_lock); 529cde58dbcSMatthew Ahrens dmu_buf_will_dirty(dl->dl_dbuf, tx); 530cde58dbcSMatthew Ahrens dsl_deadlist_load_tree(dl); 531cde58dbcSMatthew Ahrens 532cde58dbcSMatthew Ahrens dle_tofind.dle_mintxg = mintxg; 533cde58dbcSMatthew Ahrens dle = avl_find(&dl->dl_tree, &dle_tofind, &where); 534cde58dbcSMatthew Ahrens if (dle == NULL) 535cde58dbcSMatthew Ahrens dle = avl_nearest(&dl->dl_tree, where, AVL_AFTER); 536cde58dbcSMatthew Ahrens while (dle) { 537cde58dbcSMatthew Ahrens uint64_t used, comp, uncomp; 538cde58dbcSMatthew Ahrens dsl_deadlist_entry_t *dle_next; 539cde58dbcSMatthew Ahrens 540cde58dbcSMatthew Ahrens bpobj_enqueue_subobj(bpo, dle->dle_bpobj.bpo_object, tx); 541cde58dbcSMatthew Ahrens 542b420f3adSRichard Lowe VERIFY3U(0, ==, bpobj_space(&dle->dle_bpobj, 543cde58dbcSMatthew Ahrens &used, &comp, &uncomp)); 544cde58dbcSMatthew Ahrens ASSERT3U(dl->dl_phys->dl_used, >=, used); 545cde58dbcSMatthew Ahrens ASSERT3U(dl->dl_phys->dl_comp, >=, comp); 546cde58dbcSMatthew Ahrens ASSERT3U(dl->dl_phys->dl_uncomp, >=, uncomp); 547cde58dbcSMatthew Ahrens dl->dl_phys->dl_used -= used; 548cde58dbcSMatthew Ahrens dl->dl_phys->dl_comp -= comp; 549cde58dbcSMatthew Ahrens dl->dl_phys->dl_uncomp -= uncomp; 550cde58dbcSMatthew Ahrens 551b420f3adSRichard Lowe VERIFY3U(0, ==, zap_remove_int(dl->dl_os, dl->dl_object, 552cde58dbcSMatthew Ahrens dle->dle_mintxg, tx)); 553cde58dbcSMatthew Ahrens 554cde58dbcSMatthew Ahrens dle_next = AVL_NEXT(&dl->dl_tree, dle); 555cde58dbcSMatthew Ahrens avl_remove(&dl->dl_tree, dle); 556cde58dbcSMatthew Ahrens bpobj_close(&dle->dle_bpobj); 557cde58dbcSMatthew Ahrens kmem_free(dle, sizeof (*dle)); 558cde58dbcSMatthew Ahrens dle = dle_next; 559cde58dbcSMatthew Ahrens } 560a3905a45SSerapheim Dimitropoulos mutex_exit(&dl->dl_lock); 561cde58dbcSMatthew Ahrens } 562