85 lines
2.9 KiB
C
85 lines
2.9 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2018, 2019 by Delphix. All rights reserved.
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*/
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#ifndef _SYS_SPA_LOG_SPACEMAP_H
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#define _SYS_SPA_LOG_SPACEMAP_H
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#include <sys/avl.h>
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typedef struct log_summary_entry {
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uint64_t lse_start; /* start TXG */
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uint64_t lse_end; /* last TXG */
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uint64_t lse_txgcount; /* # of TXGs */
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uint64_t lse_mscount; /* # of metaslabs needed to be flushed */
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uint64_t lse_msdcount; /* # of dirty metaslabs needed to be flushed */
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uint64_t lse_blkcount; /* blocks held by this entry */
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list_node_t lse_node;
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} log_summary_entry_t;
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typedef struct spa_unflushed_stats {
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/* used for memory heuristic */
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uint64_t sus_memused; /* current memory used for unflushed trees */
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/* used for block heuristic */
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uint64_t sus_blocklimit; /* max # of log blocks allowed */
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uint64_t sus_nblocks; /* # of blocks in log space maps currently */
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} spa_unflushed_stats_t;
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typedef struct spa_log_sm {
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uint64_t sls_sm_obj; /* space map object ID */
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uint64_t sls_txg; /* txg logged on the space map */
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uint64_t sls_nblocks; /* number of blocks in this log */
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uint64_t sls_mscount; /* # of metaslabs flushed in the log's txg */
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avl_node_t sls_node; /* node in spa_sm_logs_by_txg */
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space_map_t *sls_sm; /* space map pointer, if open */
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} spa_log_sm_t;
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int spa_ld_log_spacemaps(spa_t *);
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void spa_generate_syncing_log_sm(spa_t *, dmu_tx_t *);
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void spa_flush_metaslabs(spa_t *, dmu_tx_t *);
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void spa_sync_close_syncing_log_sm(spa_t *);
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void spa_cleanup_old_sm_logs(spa_t *, dmu_tx_t *);
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uint64_t spa_log_sm_blocklimit(spa_t *);
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void spa_log_sm_set_blocklimit(spa_t *);
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uint64_t spa_log_sm_nblocks(spa_t *);
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uint64_t spa_log_sm_memused(spa_t *);
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void spa_log_sm_decrement_mscount(spa_t *, uint64_t);
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void spa_log_sm_increment_current_mscount(spa_t *);
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void spa_log_summary_add_flushed_metaslab(spa_t *, boolean_t);
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void spa_log_summary_dirty_flushed_metaslab(spa_t *, uint64_t);
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void spa_log_summary_decrement_mscount(spa_t *, uint64_t, boolean_t);
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void spa_log_summary_decrement_blkcount(spa_t *, uint64_t);
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boolean_t spa_flush_all_logs_requested(spa_t *);
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extern int zfs_keep_log_spacemaps_at_export;
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#endif /* _SYS_SPA_LOG_SPACEMAP_H */
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