1 // SPDX-License-Identifier: CDDL-1.0 2 /* 3 * This file and its contents are supplied under the terms of the 4 * Common Development and Distribution License ("CDDL"), version 1.0. 5 * You may only use this file in accordance with the terms of version 6 * 1.0 of the CDDL. 7 * 8 * A full copy of the text of the CDDL should have accompanied this 9 * source. A copy of the CDDL is also available via the Internet at 10 * https://opensource.org/license/CDDL-1.0. 11 */ 12 13 /* 14 * Copyright (c) 2018, 2019 by Delphix. All rights reserved. 15 * Copyright (c) 2024-2026, Klara, Inc. 16 * Copyright (c) 2026, TrueNAS. 17 */ 18 19 #ifndef _SYS_SPA_LOG_SPACEMAP_H 20 #define _SYS_SPA_LOG_SPACEMAP_H 21 22 #include <sys/avl.h> 23 24 typedef struct log_summary_entry { 25 uint64_t lse_start; /* start TXG */ 26 uint64_t lse_end; /* last TXG */ 27 uint64_t lse_txgcount; /* # of TXGs */ 28 uint64_t lse_mscount; /* # of metaslabs needed to be flushed */ 29 uint64_t lse_msdcount; /* # of dirty metaslabs needed to be flushed */ 30 uint64_t lse_blkcount; /* blocks held by this entry */ 31 list_node_t lse_node; 32 } log_summary_entry_t; 33 34 typedef struct spa_unflushed_stats { 35 /* used for memory heuristic */ 36 uint64_t sus_memused; /* current memory used for unflushed trees */ 37 uint64_t sus_nmetaslabs; /* # metaslabs with unflushed trees */ 38 39 /* used for block heuristic */ 40 uint64_t sus_blocklimit; /* max # of log blocks allowed */ 41 uint64_t sus_nblocks; /* # of blocks in log space maps currently */ 42 } spa_unflushed_stats_t; 43 44 typedef struct spa_log_sm { 45 uint64_t sls_sm_obj; /* space map object ID */ 46 uint64_t sls_txg; /* txg logged on the space map */ 47 uint64_t sls_nblocks; /* number of blocks in this log */ 48 uint64_t sls_mscount; /* # of metaslabs flushed in the log's txg */ 49 avl_node_t sls_node; /* node in spa_sm_logs_by_txg */ 50 space_map_t *sls_sm; /* space map pointer, if open */ 51 } spa_log_sm_t; 52 53 typedef enum spa_log_flushall_mode { 54 SPA_LOG_FLUSHALL_NONE = 0, /* flushall inactive */ 55 SPA_LOG_FLUSHALL_REQUEST, /* flushall active by admin request */ 56 SPA_LOG_FLUSHALL_EXPORT, /* flushall active for pool export */ 57 } spa_log_flushall_mode_t; 58 59 int spa_ld_log_spacemaps(spa_t *); 60 61 void spa_generate_syncing_log_sm(spa_t *, dmu_tx_t *); 62 void spa_flush_metaslabs(spa_t *, dmu_tx_t *); 63 void spa_sync_close_syncing_log_sm(spa_t *); 64 65 void spa_cleanup_old_sm_logs(spa_t *, dmu_tx_t *); 66 67 uint64_t spa_log_sm_blocklimit(spa_t *); 68 void spa_log_sm_set_blocklimit(spa_t *); 69 uint64_t spa_log_sm_nblocks(spa_t *); 70 uint64_t spa_log_sm_memused(spa_t *); 71 72 uint64_t spa_log_sm_unflushed_metaslabs(spa_t *); 73 void spa_log_sm_increment_unflushed_metaslabs(spa_t *); 74 void spa_log_sm_decrement_unflushed_metaslabs(spa_t *); 75 76 void spa_log_sm_decrement_mscount(spa_t *, uint64_t); 77 void spa_log_sm_increment_current_mscount(spa_t *); 78 79 void spa_log_summary_add_flushed_metaslab(spa_t *, boolean_t); 80 void spa_log_summary_dirty_flushed_metaslab(spa_t *, uint64_t); 81 void spa_log_summary_decrement_mscount(spa_t *, uint64_t, boolean_t); 82 void spa_log_summary_decrement_blkcount(spa_t *, uint64_t); 83 84 void spa_log_flushall_start(spa_t *spa, spa_log_flushall_mode_t mode, 85 uint64_t txg); 86 void spa_log_flushall_done(spa_t *spa); 87 void spa_log_flushall_cancel(spa_t *spa); 88 boolean_t spa_log_flushall_active(spa_t *spa); 89 90 extern int zfs_keep_log_spacemaps_at_export; 91 92 #endif /* _SYS_SPA_LOG_SPACEMAP_H */ 93