1789Sahrens /* 2789Sahrens * CDDL HEADER START 3789Sahrens * 4789Sahrens * The contents of this file are subject to the terms of the 5*1485Slling * Common Development and Distribution License (the "License"). 6*1485Slling * 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 /* 22*1485Slling * 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 41789Sahrens /* 42789Sahrens * Vdev knobs. 43789Sahrens */ 44789Sahrens typedef struct vdev_knob { 45789Sahrens char *vk_name; /* knob name */ 46789Sahrens char *vk_desc; /* knob description */ 47789Sahrens uint64_t vk_min; /* minimum legal value */ 48789Sahrens uint64_t vk_max; /* maximum legal value */ 49789Sahrens uint64_t vk_default; /* default value */ 50789Sahrens size_t vk_offset; /* offset into vdev_t */ 51789Sahrens } vdev_knob_t; 52789Sahrens 53789Sahrens /* 54789Sahrens * Fault injection modes. 55789Sahrens */ 56789Sahrens #define VDEV_FAULT_NONE 0 57789Sahrens #define VDEV_FAULT_RANDOM 1 58789Sahrens #define VDEV_FAULT_COUNT 2 59789Sahrens 60789Sahrens extern int vdev_open(vdev_t *); 61789Sahrens extern void vdev_close(vdev_t *); 62789Sahrens extern int vdev_create(vdev_t *, uint64_t txg); 63789Sahrens extern void vdev_init(vdev_t *, uint64_t txg); 64789Sahrens extern void vdev_reopen(vdev_t *, zio_t **zq); 65789Sahrens 66789Sahrens extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev); 67789Sahrens extern vdev_t *vdev_lookup_by_path(vdev_t *vd, const char *path); 68789Sahrens extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid); 69789Sahrens extern void vdev_dtl_dirty(space_map_t *sm, uint64_t txg, uint64_t size); 70789Sahrens extern int vdev_dtl_contains(space_map_t *sm, uint64_t txg, uint64_t size); 71789Sahrens extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, 72789Sahrens int scrub_done); 73789Sahrens 74789Sahrens extern const char *vdev_description(vdev_t *vd); 75789Sahrens 76789Sahrens extern void vdev_metaslab_init(vdev_t *vd, uint64_t txg); 77789Sahrens extern void vdev_metaslab_fini(vdev_t *vd); 78789Sahrens 79789Sahrens extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs); 80789Sahrens extern void vdev_stat_update(zio_t *zio); 81789Sahrens extern void vdev_scrub_stat_update(vdev_t *vd, pool_scrub_type_t type, 82789Sahrens boolean_t complete); 83789Sahrens extern void vdev_checksum_error(zio_t *zio, vdev_t *vd); 84789Sahrens extern int vdev_getspec(spa_t *spa, uint64_t vdev, char **vdev_spec); 85789Sahrens extern void vdev_set_state(vdev_t *vd, vdev_state_t state, vdev_aux_t aux); 86789Sahrens 87789Sahrens extern void vdev_space_update(vdev_t *vd, uint64_t space_delta, 88789Sahrens uint64_t alloc_delta); 89789Sahrens 90789Sahrens extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize); 91789Sahrens 92789Sahrens extern void vdev_io_start(zio_t *zio); 93789Sahrens extern void vdev_io_done(zio_t *zio); 94789Sahrens 95789Sahrens extern int vdev_online(spa_t *spa, const char *path); 96*1485Slling extern int vdev_offline(spa_t *spa, const char *path, int istmp); 97789Sahrens 98789Sahrens extern int vdev_error_setup(spa_t *spa, const char *path, int mode, int mask, 99789Sahrens uint64_t arg); 100789Sahrens extern int vdev_error_inject(vdev_t *vd, zio_t *zio); 101789Sahrens extern int vdev_is_dead(vdev_t *vd); 102789Sahrens 103789Sahrens extern void vdev_cache_init(vdev_t *vd); 104789Sahrens extern void vdev_cache_fini(vdev_t *vd); 105789Sahrens extern int vdev_cache_read(zio_t *zio); 106789Sahrens extern void vdev_cache_write(zio_t *zio); 107789Sahrens 108789Sahrens extern void vdev_queue_init(vdev_t *vd); 109789Sahrens extern void vdev_queue_fini(vdev_t *vd); 110789Sahrens extern zio_t *vdev_queue_io(zio_t *zio); 111789Sahrens extern void vdev_queue_io_done(zio_t *zio); 112789Sahrens 113789Sahrens extern vdev_knob_t *vdev_knob_next(vdev_knob_t *vk); 114789Sahrens 115789Sahrens extern void vdev_config_dirty(vdev_t *vd); 116789Sahrens extern void vdev_config_clean(vdev_t *vd); 117789Sahrens 118789Sahrens extern nvlist_t *vdev_config_generate(vdev_t *vd, int getstats); 119789Sahrens 120789Sahrens /* 121789Sahrens * Label routines 122789Sahrens */ 123789Sahrens struct uberblock; 124789Sahrens extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset); 125789Sahrens extern nvlist_t *vdev_label_read_config(vdev_t *vd); 126789Sahrens extern void vdev_uberblock_load(zio_t *zio, vdev_t *vd, struct uberblock *ub); 127789Sahrens int vdev_label_init(vdev_t *vd, uint64_t create_txg); 128789Sahrens extern int spa_sync_labels(spa_t *spa, uint64_t txg); 129789Sahrens 130789Sahrens #ifdef __cplusplus 131789Sahrens } 132789Sahrens #endif 133789Sahrens 134789Sahrens #endif /* _SYS_VDEV_H */ 135