1789Sahrens /* 2789Sahrens * CDDL HEADER START 3789Sahrens * 4789Sahrens * The contents of this file are subject to the terms of the 51485Slling * Common Development and Distribution License (the "License"). 61485Slling * You may not use this file except in compliance with the License. 7789Sahrens * 8789Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9789Sahrens * or http://www.opensolaris.org/os/licensing. 10789Sahrens * See the License for the specific language governing permissions 11789Sahrens * and limitations under the License. 12789Sahrens * 13789Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14789Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15789Sahrens * If applicable, add the following below this CDDL HEADER, with the 16789Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17789Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18789Sahrens * 19789Sahrens * CDDL HEADER END 20789Sahrens */ 21789Sahrens /* 221485Slling * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 23789Sahrens * Use is subject to license terms. 24789Sahrens */ 25789Sahrens 26789Sahrens #ifndef _SYS_VDEV_H 27789Sahrens #define _SYS_VDEV_H 28789Sahrens 29789Sahrens #pragma ident "%Z%%M% %I% %E% SMI" 30789Sahrens 31789Sahrens #include <sys/spa.h> 32789Sahrens #include <sys/zio.h> 33789Sahrens #include <sys/dmu.h> 34789Sahrens #include <sys/space_map.h> 35789Sahrens #include <sys/fs/zfs.h> 36789Sahrens 37789Sahrens #ifdef __cplusplus 38789Sahrens extern "C" { 39789Sahrens #endif 40789Sahrens 41*2986Sek110237 extern boolean_t zfs_nocacheflush; 42*2986Sek110237 43789Sahrens /* 44789Sahrens * Vdev knobs. 45789Sahrens */ 46789Sahrens typedef struct vdev_knob { 47789Sahrens char *vk_name; /* knob name */ 48789Sahrens char *vk_desc; /* knob description */ 49789Sahrens uint64_t vk_min; /* minimum legal value */ 50789Sahrens uint64_t vk_max; /* maximum legal value */ 51789Sahrens uint64_t vk_default; /* default value */ 52789Sahrens size_t vk_offset; /* offset into vdev_t */ 53789Sahrens } vdev_knob_t; 54789Sahrens 55789Sahrens /* 56789Sahrens * Fault injection modes. 57789Sahrens */ 58789Sahrens #define VDEV_FAULT_NONE 0 59789Sahrens #define VDEV_FAULT_RANDOM 1 60789Sahrens #define VDEV_FAULT_COUNT 2 61789Sahrens 62789Sahrens extern int vdev_open(vdev_t *); 631986Seschrock extern int vdev_validate(vdev_t *); 64789Sahrens extern void vdev_close(vdev_t *); 652082Seschrock extern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace); 661585Sbonwick extern void vdev_init(vdev_t *, uint64_t txg); 671544Seschrock extern void vdev_reopen(vdev_t *); 682082Seschrock extern int vdev_validate_spare(vdev_t *); 69789Sahrens 70789Sahrens extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev); 71789Sahrens extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid); 72789Sahrens extern void vdev_dtl_dirty(space_map_t *sm, uint64_t txg, uint64_t size); 73789Sahrens extern int vdev_dtl_contains(space_map_t *sm, uint64_t txg, uint64_t size); 74789Sahrens extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, 75789Sahrens int scrub_done); 76789Sahrens 77789Sahrens extern const char *vdev_description(vdev_t *vd); 78789Sahrens 791544Seschrock extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg); 80789Sahrens extern void vdev_metaslab_fini(vdev_t *vd); 81789Sahrens 82789Sahrens extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs); 83789Sahrens extern void vdev_stat_update(zio_t *zio); 84789Sahrens extern void vdev_scrub_stat_update(vdev_t *vd, pool_scrub_type_t type, 85789Sahrens boolean_t complete); 86789Sahrens extern int vdev_getspec(spa_t *spa, uint64_t vdev, char **vdev_spec); 871775Sbillm extern void vdev_propagate_state(vdev_t *vd); 881544Seschrock extern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, 891544Seschrock vdev_aux_t aux); 90789Sahrens 912082Seschrock extern void vdev_space_update(vdev_t *vd, int64_t space_delta, 922082Seschrock int64_t alloc_delta); 93789Sahrens 94789Sahrens extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize); 95789Sahrens 96789Sahrens extern void vdev_io_start(zio_t *zio); 97789Sahrens extern void vdev_io_done(zio_t *zio); 98789Sahrens 991544Seschrock extern int vdev_online(spa_t *spa, uint64_t guid); 1001544Seschrock extern int vdev_offline(spa_t *spa, uint64_t guid, int istmp); 1011544Seschrock extern void vdev_clear(spa_t *spa, vdev_t *vd); 102789Sahrens 103789Sahrens extern int vdev_error_inject(vdev_t *vd, zio_t *zio); 104789Sahrens extern int vdev_is_dead(vdev_t *vd); 105789Sahrens 106789Sahrens extern void vdev_cache_init(vdev_t *vd); 107789Sahrens extern void vdev_cache_fini(vdev_t *vd); 108789Sahrens extern int vdev_cache_read(zio_t *zio); 109789Sahrens extern void vdev_cache_write(zio_t *zio); 110789Sahrens 111789Sahrens extern void vdev_queue_init(vdev_t *vd); 112789Sahrens extern void vdev_queue_fini(vdev_t *vd); 113789Sahrens extern zio_t *vdev_queue_io(zio_t *zio); 114789Sahrens extern void vdev_queue_io_done(zio_t *zio); 115789Sahrens 116789Sahrens extern vdev_knob_t *vdev_knob_next(vdev_knob_t *vk); 117789Sahrens 118789Sahrens extern void vdev_config_dirty(vdev_t *vd); 119789Sahrens extern void vdev_config_clean(vdev_t *vd); 1201635Sbonwick extern int vdev_config_sync(vdev_t *vd, uint64_t txg); 121789Sahrens 1222082Seschrock extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd, 1232082Seschrock boolean_t getstats, boolean_t isspare); 124789Sahrens 125789Sahrens /* 126789Sahrens * Label routines 127789Sahrens */ 128789Sahrens struct uberblock; 129789Sahrens extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset); 130789Sahrens extern nvlist_t *vdev_label_read_config(vdev_t *vd); 131789Sahrens extern void vdev_uberblock_load(zio_t *zio, vdev_t *vd, struct uberblock *ub); 1322082Seschrock int vdev_label_init(vdev_t *vd, uint64_t create_txg, boolean_t isreplacing); 1332082Seschrock int vdev_label_spare(vdev_t *vd, uint64_t create_txg); 134789Sahrens 135789Sahrens #ifdef __cplusplus 136789Sahrens } 137789Sahrens #endif 138789Sahrens 139789Sahrens #endif /* _SYS_VDEV_H */ 140