1*789Sahrens /* 2*789Sahrens * CDDL HEADER START 3*789Sahrens * 4*789Sahrens * The contents of this file are subject to the terms of the 5*789Sahrens * Common Development and Distribution License, Version 1.0 only 6*789Sahrens * (the "License"). You may not use this file except in compliance 7*789Sahrens * with the License. 8*789Sahrens * 9*789Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*789Sahrens * or http://www.opensolaris.org/os/licensing. 11*789Sahrens * See the License for the specific language governing permissions 12*789Sahrens * and limitations under the License. 13*789Sahrens * 14*789Sahrens * When distributing Covered Code, include this CDDL HEADER in each 15*789Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*789Sahrens * If applicable, add the following below this CDDL HEADER, with the 17*789Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 18*789Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 19*789Sahrens * 20*789Sahrens * CDDL HEADER END 21*789Sahrens */ 22*789Sahrens /* 23*789Sahrens * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24*789Sahrens * Use is subject to license terms. 25*789Sahrens */ 26*789Sahrens 27*789Sahrens #ifndef _SYS_VDEV_H 28*789Sahrens #define _SYS_VDEV_H 29*789Sahrens 30*789Sahrens #pragma ident "%Z%%M% %I% %E% SMI" 31*789Sahrens 32*789Sahrens #include <sys/spa.h> 33*789Sahrens #include <sys/zio.h> 34*789Sahrens #include <sys/dmu.h> 35*789Sahrens #include <sys/space_map.h> 36*789Sahrens #include <sys/fs/zfs.h> 37*789Sahrens 38*789Sahrens #ifdef __cplusplus 39*789Sahrens extern "C" { 40*789Sahrens #endif 41*789Sahrens 42*789Sahrens /* 43*789Sahrens * Vdev knobs. 44*789Sahrens */ 45*789Sahrens typedef struct vdev_knob { 46*789Sahrens char *vk_name; /* knob name */ 47*789Sahrens char *vk_desc; /* knob description */ 48*789Sahrens uint64_t vk_min; /* minimum legal value */ 49*789Sahrens uint64_t vk_max; /* maximum legal value */ 50*789Sahrens uint64_t vk_default; /* default value */ 51*789Sahrens size_t vk_offset; /* offset into vdev_t */ 52*789Sahrens } vdev_knob_t; 53*789Sahrens 54*789Sahrens /* 55*789Sahrens * Fault injection modes. 56*789Sahrens */ 57*789Sahrens #define VDEV_FAULT_NONE 0 58*789Sahrens #define VDEV_FAULT_RANDOM 1 59*789Sahrens #define VDEV_FAULT_COUNT 2 60*789Sahrens 61*789Sahrens extern int vdev_open(vdev_t *); 62*789Sahrens extern void vdev_close(vdev_t *); 63*789Sahrens extern int vdev_create(vdev_t *, uint64_t txg); 64*789Sahrens extern void vdev_init(vdev_t *, uint64_t txg); 65*789Sahrens extern void vdev_reopen(vdev_t *, zio_t **zq); 66*789Sahrens 67*789Sahrens extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev); 68*789Sahrens extern vdev_t *vdev_lookup_by_path(vdev_t *vd, const char *path); 69*789Sahrens extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid); 70*789Sahrens extern void vdev_dtl_dirty(space_map_t *sm, uint64_t txg, uint64_t size); 71*789Sahrens extern int vdev_dtl_contains(space_map_t *sm, uint64_t txg, uint64_t size); 72*789Sahrens extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, 73*789Sahrens int scrub_done); 74*789Sahrens 75*789Sahrens extern const char *vdev_description(vdev_t *vd); 76*789Sahrens 77*789Sahrens extern void vdev_metaslab_init(vdev_t *vd, uint64_t txg); 78*789Sahrens extern void vdev_metaslab_fini(vdev_t *vd); 79*789Sahrens 80*789Sahrens extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs); 81*789Sahrens extern void vdev_stat_update(zio_t *zio); 82*789Sahrens extern void vdev_scrub_stat_update(vdev_t *vd, pool_scrub_type_t type, 83*789Sahrens boolean_t complete); 84*789Sahrens extern void vdev_checksum_error(zio_t *zio, vdev_t *vd); 85*789Sahrens extern int vdev_getspec(spa_t *spa, uint64_t vdev, char **vdev_spec); 86*789Sahrens extern void vdev_set_state(vdev_t *vd, vdev_state_t state, vdev_aux_t aux); 87*789Sahrens 88*789Sahrens extern void vdev_space_update(vdev_t *vd, uint64_t space_delta, 89*789Sahrens uint64_t alloc_delta); 90*789Sahrens 91*789Sahrens extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize); 92*789Sahrens 93*789Sahrens extern void vdev_io_start(zio_t *zio); 94*789Sahrens extern void vdev_io_done(zio_t *zio); 95*789Sahrens 96*789Sahrens extern int vdev_online(spa_t *spa, const char *path); 97*789Sahrens extern int vdev_offline(spa_t *spa, const char *path); 98*789Sahrens 99*789Sahrens extern int vdev_error_setup(spa_t *spa, const char *path, int mode, int mask, 100*789Sahrens uint64_t arg); 101*789Sahrens extern int vdev_error_inject(vdev_t *vd, zio_t *zio); 102*789Sahrens extern int vdev_is_dead(vdev_t *vd); 103*789Sahrens 104*789Sahrens extern void vdev_cache_init(vdev_t *vd); 105*789Sahrens extern void vdev_cache_fini(vdev_t *vd); 106*789Sahrens extern int vdev_cache_read(zio_t *zio); 107*789Sahrens extern void vdev_cache_write(zio_t *zio); 108*789Sahrens 109*789Sahrens extern void vdev_queue_init(vdev_t *vd); 110*789Sahrens extern void vdev_queue_fini(vdev_t *vd); 111*789Sahrens extern zio_t *vdev_queue_io(zio_t *zio); 112*789Sahrens extern void vdev_queue_io_done(zio_t *zio); 113*789Sahrens 114*789Sahrens extern vdev_knob_t *vdev_knob_next(vdev_knob_t *vk); 115*789Sahrens 116*789Sahrens extern void vdev_config_dirty(vdev_t *vd); 117*789Sahrens extern void vdev_config_clean(vdev_t *vd); 118*789Sahrens 119*789Sahrens extern nvlist_t *vdev_config_generate(vdev_t *vd, int getstats); 120*789Sahrens 121*789Sahrens /* 122*789Sahrens * Label routines 123*789Sahrens */ 124*789Sahrens struct uberblock; 125*789Sahrens extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset); 126*789Sahrens extern nvlist_t *vdev_label_read_config(vdev_t *vd); 127*789Sahrens extern void vdev_uberblock_load(zio_t *zio, vdev_t *vd, struct uberblock *ub); 128*789Sahrens int vdev_label_init(vdev_t *vd, uint64_t create_txg); 129*789Sahrens extern int spa_sync_labels(spa_t *spa, uint64_t txg); 130*789Sahrens 131*789Sahrens #ifdef __cplusplus 132*789Sahrens } 133*789Sahrens #endif 134*789Sahrens 135*789Sahrens #endif /* _SYS_VDEV_H */ 136