1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5ecc2d604Sbonwick * Common Development and Distribution License (the "License"). 6ecc2d604Sbonwick * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 21fa9e4066Sahrens /* 223f9d6ad7SLin Ling * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23f78cdc34SPaul Dagnelie * Copyright (c) 2011, 2018 by Delphix. All rights reserved. 24663207adSDon Brady * Copyright (c) 2017, Intel Corporation. 25fa9e4066Sahrens */ 26fa9e4066Sahrens 27fa9e4066Sahrens #ifndef _SYS_METASLAB_H 28fa9e4066Sahrens #define _SYS_METASLAB_H 29fa9e4066Sahrens 30fa9e4066Sahrens #include <sys/spa.h> 31fa9e4066Sahrens #include <sys/space_map.h> 32fa9e4066Sahrens #include <sys/txg.h> 33fa9e4066Sahrens #include <sys/zio.h> 34fa9e4066Sahrens #include <sys/avl.h> 35fa9e4066Sahrens 36fa9e4066Sahrens #ifdef __cplusplus 37fa9e4066Sahrens extern "C" { 38fa9e4066Sahrens #endif 39fa9e4066Sahrens 408363e80aSGeorge Wilson 410713e232SGeorge Wilson typedef struct metaslab_ops { 428363e80aSGeorge Wilson uint64_t (*msop_alloc)(metaslab_t *, uint64_t); 430713e232SGeorge Wilson } metaslab_ops_t; 44d6e555bdSGeorge Wilson 458363e80aSGeorge Wilson 460713e232SGeorge Wilson extern metaslab_ops_t *zfs_metaslab_ops; 470713e232SGeorge Wilson 481e9bd7ecSPrakash Surya int metaslab_init(metaslab_group_t *, uint64_t, uint64_t, uint64_t, 491e9bd7ecSPrakash Surya metaslab_t **); 502e4c9986SGeorge Wilson void metaslab_fini(metaslab_t *); 510713e232SGeorge Wilson 52814dcd43SSerapheim Dimitropoulos void metaslab_set_unflushed_txg(metaslab_t *, uint64_t, dmu_tx_t *); 53814dcd43SSerapheim Dimitropoulos void metaslab_set_estimated_condensed_size(metaslab_t *, uint64_t, dmu_tx_t *); 54814dcd43SSerapheim Dimitropoulos uint64_t metaslab_unflushed_txg(metaslab_t *); 55814dcd43SSerapheim Dimitropoulos uint64_t metaslab_estimated_condensed_size(metaslab_t *); 56814dcd43SSerapheim Dimitropoulos int metaslab_sort_by_flushed(const void *, const void *); 57814dcd43SSerapheim Dimitropoulos uint64_t metaslab_unflushed_changes_memused(metaslab_t *); 58814dcd43SSerapheim Dimitropoulos 592e4c9986SGeorge Wilson int metaslab_load(metaslab_t *); 602e4c9986SGeorge Wilson void metaslab_unload(metaslab_t *); 61814dcd43SSerapheim Dimitropoulos boolean_t metaslab_flush(metaslab_t *, dmu_tx_t *); 620713e232SGeorge Wilson 63555d674dSSerapheim Dimitropoulos uint64_t metaslab_allocated_space(metaslab_t *); 64555d674dSSerapheim Dimitropoulos 652e4c9986SGeorge Wilson void metaslab_sync(metaslab_t *, uint64_t); 662e4c9986SGeorge Wilson void metaslab_sync_done(metaslab_t *, uint64_t); 672e4c9986SGeorge Wilson void metaslab_sync_reassess(metaslab_group_t *); 68*af1d63abSPaul Dagnelie uint64_t metaslab_largest_allocatable(metaslab_t *); 69fa9e4066Sahrens 70663207adSDon Brady /* 71663207adSDon Brady * metaslab alloc flags 72663207adSDon Brady */ 73e14bb325SJeff Bonwick #define METASLAB_HINTBP_FAVOR 0x0 74e14bb325SJeff Bonwick #define METASLAB_HINTBP_AVOID 0x1 75e14bb325SJeff Bonwick #define METASLAB_GANG_HEADER 0x2 7609c9d376SGeorge Wilson #define METASLAB_GANG_CHILD 0x4 770f7643c7SGeorge Wilson #define METASLAB_ASYNC_ALLOC 0x8 780f7643c7SGeorge Wilson #define METASLAB_DONT_THROTTLE 0x10 79663207adSDon Brady #define METASLAB_MUST_RESERVE 0x20 80663207adSDon Brady #define METASLAB_FASTWRITE 0x40 81e14bb325SJeff Bonwick 822e4c9986SGeorge Wilson int metaslab_alloc(spa_t *, metaslab_class_t *, uint64_t, 83f78cdc34SPaul Dagnelie blkptr_t *, int, uint64_t, blkptr_t *, int, zio_alloc_list_t *, zio_t *, 84f78cdc34SPaul Dagnelie int); 855cabbc6bSPrashanth Sreenivasa int metaslab_alloc_dva(spa_t *, metaslab_class_t *, uint64_t, 86f78cdc34SPaul Dagnelie dva_t *, int, dva_t *, uint64_t, int, zio_alloc_list_t *, int); 872e4c9986SGeorge Wilson void metaslab_free(spa_t *, const blkptr_t *, uint64_t, boolean_t); 8886714001SSerapheim Dimitropoulos void metaslab_free_concrete(vdev_t *, uint64_t, uint64_t, boolean_t); 8986714001SSerapheim Dimitropoulos void metaslab_free_dva(spa_t *, const dva_t *, boolean_t); 905cabbc6bSPrashanth Sreenivasa void metaslab_free_impl_cb(uint64_t, vdev_t *, uint64_t, uint64_t, void *); 915cabbc6bSPrashanth Sreenivasa void metaslab_unalloc_dva(spa_t *, const dva_t *, uint64_t); 922e4c9986SGeorge Wilson int metaslab_claim(spa_t *, const blkptr_t *, uint64_t); 935cabbc6bSPrashanth Sreenivasa int metaslab_claim_impl(vdev_t *, uint64_t, uint64_t, uint64_t); 942e4c9986SGeorge Wilson void metaslab_check_free(spa_t *, const blkptr_t *); 95fa9e4066Sahrens 968363e80aSGeorge Wilson void metaslab_alloc_trace_init(void); 978363e80aSGeorge Wilson void metaslab_alloc_trace_fini(void); 988363e80aSGeorge Wilson void metaslab_trace_init(zio_alloc_list_t *); 998363e80aSGeorge Wilson void metaslab_trace_fini(zio_alloc_list_t *); 1008363e80aSGeorge Wilson 1012e4c9986SGeorge Wilson metaslab_class_t *metaslab_class_create(spa_t *, metaslab_ops_t *); 1022e4c9986SGeorge Wilson void metaslab_class_destroy(metaslab_class_t *); 1032e4c9986SGeorge Wilson int metaslab_class_validate(metaslab_class_t *); 1042e4c9986SGeorge Wilson void metaslab_class_histogram_verify(metaslab_class_t *); 1052e4c9986SGeorge Wilson uint64_t metaslab_class_fragmentation(metaslab_class_t *); 1062e4c9986SGeorge Wilson uint64_t metaslab_class_expandable_space(metaslab_class_t *); 107f78cdc34SPaul Dagnelie boolean_t metaslab_class_throttle_reserve(metaslab_class_t *, int, int, 1080f7643c7SGeorge Wilson zio_t *, int); 109f78cdc34SPaul Dagnelie void metaslab_class_throttle_unreserve(metaslab_class_t *, int, int, zio_t *); 110*af1d63abSPaul Dagnelie void metaslab_class_evict_old(metaslab_class_t *, uint64_t); 1112e4c9986SGeorge Wilson uint64_t metaslab_class_get_alloc(metaslab_class_t *); 1122e4c9986SGeorge Wilson uint64_t metaslab_class_get_space(metaslab_class_t *); 1132e4c9986SGeorge Wilson uint64_t metaslab_class_get_dspace(metaslab_class_t *); 1142e4c9986SGeorge Wilson uint64_t metaslab_class_get_deferred(metaslab_class_t *); 115b24ab676SJeff Bonwick 116814dcd43SSerapheim Dimitropoulos void metaslab_space_update(vdev_t *, metaslab_class_t *, 117814dcd43SSerapheim Dimitropoulos int64_t, int64_t, int64_t); 118814dcd43SSerapheim Dimitropoulos 119f78cdc34SPaul Dagnelie metaslab_group_t *metaslab_group_create(metaslab_class_t *, vdev_t *, int); 1202e4c9986SGeorge Wilson void metaslab_group_destroy(metaslab_group_t *); 1212e4c9986SGeorge Wilson void metaslab_group_activate(metaslab_group_t *); 1222e4c9986SGeorge Wilson void metaslab_group_passivate(metaslab_group_t *); 1230f7643c7SGeorge Wilson boolean_t metaslab_group_initialized(metaslab_group_t *); 1242e4c9986SGeorge Wilson uint64_t metaslab_group_get_space(metaslab_group_t *); 1252e4c9986SGeorge Wilson void metaslab_group_histogram_verify(metaslab_group_t *); 1262e4c9986SGeorge Wilson uint64_t metaslab_group_fragmentation(metaslab_group_t *); 1272e4c9986SGeorge Wilson void metaslab_group_histogram_remove(metaslab_group_t *, metaslab_t *); 128f78cdc34SPaul Dagnelie void metaslab_group_alloc_decrement(spa_t *, uint64_t, void *, int, int, 129f78cdc34SPaul Dagnelie boolean_t); 130f78cdc34SPaul Dagnelie void metaslab_group_alloc_verify(spa_t *, const blkptr_t *, void *, int); 131555d674dSSerapheim Dimitropoulos void metaslab_recalculate_weight_and_sort(metaslab_t *); 132084fd14fSBrian Behlendorf void metaslab_disable(metaslab_t *); 133*af1d63abSPaul Dagnelie void metaslab_enable(metaslab_t *, boolean_t, boolean_t); 134*af1d63abSPaul Dagnelie void metaslab_set_selected_txg(metaslab_t *, uint64_t); 135fa9e4066Sahrens 136814dcd43SSerapheim Dimitropoulos extern int metaslab_debug_load; 137814dcd43SSerapheim Dimitropoulos 138fa9e4066Sahrens #ifdef __cplusplus 139fa9e4066Sahrens } 140fa9e4066Sahrens #endif 141fa9e4066Sahrens 142fa9e4066Sahrens #endif /* _SYS_METASLAB_H */ 143