1 // SPDX-License-Identifier: CDDL-1.0 2 /* 3 * CDDL HEADER START 4 * 5 * The contents of this file are subject to the terms of the 6 * Common Development and Distribution License (the "License"). 7 * You may not use this file except in compliance with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or https://opensource.org/licenses/CDDL-1.0. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 23 /* 24 * Copyright (c) 2018, 2019 by Delphix. All rights reserved. 25 */ 26 27 #ifndef _SYS_SPA_LOG_SPACEMAP_H 28 #define _SYS_SPA_LOG_SPACEMAP_H 29 30 #include <sys/avl.h> 31 32 typedef struct log_summary_entry { 33 uint64_t lse_start; /* start TXG */ 34 uint64_t lse_end; /* last TXG */ 35 uint64_t lse_txgcount; /* # of TXGs */ 36 uint64_t lse_mscount; /* # of metaslabs needed to be flushed */ 37 uint64_t lse_msdcount; /* # of dirty metaslabs needed to be flushed */ 38 uint64_t lse_blkcount; /* blocks held by this entry */ 39 list_node_t lse_node; 40 } log_summary_entry_t; 41 42 typedef struct spa_unflushed_stats { 43 /* used for memory heuristic */ 44 uint64_t sus_memused; /* current memory used for unflushed trees */ 45 46 /* used for block heuristic */ 47 uint64_t sus_blocklimit; /* max # of log blocks allowed */ 48 uint64_t sus_nblocks; /* # of blocks in log space maps currently */ 49 } spa_unflushed_stats_t; 50 51 typedef struct spa_log_sm { 52 uint64_t sls_sm_obj; /* space map object ID */ 53 uint64_t sls_txg; /* txg logged on the space map */ 54 uint64_t sls_nblocks; /* number of blocks in this log */ 55 uint64_t sls_mscount; /* # of metaslabs flushed in the log's txg */ 56 avl_node_t sls_node; /* node in spa_sm_logs_by_txg */ 57 space_map_t *sls_sm; /* space map pointer, if open */ 58 } spa_log_sm_t; 59 60 int spa_ld_log_spacemaps(spa_t *); 61 62 void spa_generate_syncing_log_sm(spa_t *, dmu_tx_t *); 63 void spa_flush_metaslabs(spa_t *, dmu_tx_t *); 64 void spa_sync_close_syncing_log_sm(spa_t *); 65 66 void spa_cleanup_old_sm_logs(spa_t *, dmu_tx_t *); 67 68 uint64_t spa_log_sm_blocklimit(spa_t *); 69 void spa_log_sm_set_blocklimit(spa_t *); 70 uint64_t spa_log_sm_nblocks(spa_t *); 71 uint64_t spa_log_sm_memused(spa_t *); 72 73 void spa_log_sm_decrement_mscount(spa_t *, uint64_t); 74 void spa_log_sm_increment_current_mscount(spa_t *); 75 76 void spa_log_summary_add_flushed_metaslab(spa_t *, boolean_t); 77 void spa_log_summary_dirty_flushed_metaslab(spa_t *, uint64_t); 78 void spa_log_summary_decrement_mscount(spa_t *, uint64_t, boolean_t); 79 void spa_log_summary_decrement_blkcount(spa_t *, uint64_t); 80 81 boolean_t spa_flush_all_logs_requested(spa_t *); 82 83 extern int zfs_keep_log_spacemaps_at_export; 84 85 #endif /* _SYS_SPA_LOG_SPACEMAP_H */ 86