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 /* 226615Sgw25295 * Copyright 2008 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 412986Sek110237 extern boolean_t zfs_nocacheflush; 422986Sek110237 43789Sahrens /* 44789Sahrens * Fault injection modes. 45789Sahrens */ 46789Sahrens #define VDEV_FAULT_NONE 0 47789Sahrens #define VDEV_FAULT_RANDOM 1 48789Sahrens #define VDEV_FAULT_COUNT 2 49789Sahrens 50789Sahrens extern int vdev_open(vdev_t *); 511986Seschrock extern int vdev_validate(vdev_t *); 52789Sahrens extern void vdev_close(vdev_t *); 532082Seschrock extern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace); 541585Sbonwick extern void vdev_init(vdev_t *, uint64_t txg); 551544Seschrock extern void vdev_reopen(vdev_t *); 565450Sbrendan extern int vdev_validate_aux(vdev_t *vd); 575329Sgw25295 extern int vdev_probe(vdev_t *); 58789Sahrens 597042Sgw25295 extern boolean_t vdev_is_bootable(vdev_t *vd); 60789Sahrens extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev); 61789Sahrens extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid); 62789Sahrens extern void vdev_dtl_dirty(space_map_t *sm, uint64_t txg, uint64_t size); 63789Sahrens extern int vdev_dtl_contains(space_map_t *sm, uint64_t txg, uint64_t size); 64789Sahrens extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, 65789Sahrens int scrub_done); 66*7046Sahrens extern boolean_t vdev_resilver_needed(vdev_t *vd, 67*7046Sahrens uint64_t *minp, uint64_t *maxp); 68789Sahrens 69789Sahrens extern const char *vdev_description(vdev_t *vd); 70789Sahrens 711544Seschrock extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg); 72789Sahrens extern void vdev_metaslab_fini(vdev_t *vd); 73789Sahrens 74789Sahrens extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs); 755450Sbrendan extern void vdev_clear_stats(vdev_t *vd); 76789Sahrens extern void vdev_stat_update(zio_t *zio); 77789Sahrens extern void vdev_scrub_stat_update(vdev_t *vd, pool_scrub_type_t type, 78789Sahrens boolean_t complete); 79789Sahrens extern int vdev_getspec(spa_t *spa, uint64_t vdev, char **vdev_spec); 801775Sbillm extern void vdev_propagate_state(vdev_t *vd); 811544Seschrock extern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, 821544Seschrock vdev_aux_t aux); 83789Sahrens 842082Seschrock extern void vdev_space_update(vdev_t *vd, int64_t space_delta, 855450Sbrendan int64_t alloc_delta, boolean_t update_root); 86789Sahrens 87789Sahrens extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize); 88789Sahrens 894451Seschrock extern int vdev_fault(spa_t *spa, uint64_t guid); 904451Seschrock extern int vdev_degrade(spa_t *spa, uint64_t guid); 914451Seschrock extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, 924451Seschrock vdev_state_t *); 934451Seschrock extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags); 945329Sgw25295 extern void vdev_clear(spa_t *spa, vdev_t *vd, boolean_t reopen_wanted); 95789Sahrens 96789Sahrens extern int vdev_error_inject(vdev_t *vd, zio_t *zio); 97789Sahrens extern int vdev_is_dead(vdev_t *vd); 985329Sgw25295 extern int vdev_readable(vdev_t *vd); 995329Sgw25295 extern int vdev_writeable(vdev_t *vd); 100789Sahrens 101789Sahrens extern void vdev_cache_init(vdev_t *vd); 102789Sahrens extern void vdev_cache_fini(vdev_t *vd); 103789Sahrens extern int vdev_cache_read(zio_t *zio); 104789Sahrens extern void vdev_cache_write(zio_t *zio); 1054451Seschrock extern void vdev_cache_purge(vdev_t *vd); 106789Sahrens 107789Sahrens extern void vdev_queue_init(vdev_t *vd); 108789Sahrens extern void vdev_queue_fini(vdev_t *vd); 109789Sahrens extern zio_t *vdev_queue_io(zio_t *zio); 110789Sahrens extern void vdev_queue_io_done(zio_t *zio); 111789Sahrens 112789Sahrens extern void vdev_config_dirty(vdev_t *vd); 113789Sahrens extern void vdev_config_clean(vdev_t *vd); 1146615Sgw25295 extern void vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg); 115789Sahrens 1162082Seschrock extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd, 1175450Sbrendan boolean_t getstats, boolean_t isspare, boolean_t isl2cache); 118789Sahrens 119789Sahrens /* 120789Sahrens * Label routines 121789Sahrens */ 122789Sahrens struct uberblock; 123789Sahrens extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset); 1246615Sgw25295 extern int vdev_label_number(uint64_t psise, 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); 1273377Seschrock 1283377Seschrock typedef enum { 1293377Seschrock VDEV_LABEL_CREATE, /* create/add a new device */ 1303377Seschrock VDEV_LABEL_REPLACE, /* replace an existing device */ 1313377Seschrock VDEV_LABEL_SPARE, /* add a new hot spare */ 1325450Sbrendan VDEV_LABEL_REMOVE, /* remove an existing device */ 1335450Sbrendan VDEV_LABEL_L2CACHE /* add an L2ARC cache device */ 1343377Seschrock } vdev_labeltype_t; 1353377Seschrock 1363377Seschrock extern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason); 137789Sahrens 138789Sahrens #ifdef __cplusplus 139789Sahrens } 140789Sahrens #endif 141789Sahrens 142789Sahrens #endif /* _SYS_VDEV_H */ 143