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Diffstat (limited to 'module/zfs/include/sys/vdev.h')
| -rw-r--r-- | module/zfs/include/sys/vdev.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/module/zfs/include/sys/vdev.h b/module/zfs/include/sys/vdev.h new file mode 100644 index 000000000..c070d6f3d --- /dev/null +++ b/module/zfs/include/sys/vdev.h @@ -0,0 +1,135 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License (the "License"). + * You may not use this file except in compliance with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright 2008 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#ifndef _SYS_VDEV_H +#define _SYS_VDEV_H + +#include <sys/spa.h> +#include <sys/zio.h> +#include <sys/dmu.h> +#include <sys/space_map.h> +#include <sys/fs/zfs.h> + +#ifdef __cplusplus +extern "C" { +#endif + +extern boolean_t zfs_nocacheflush; + +extern int vdev_open(vdev_t *); +extern int vdev_validate(vdev_t *); +extern void vdev_close(vdev_t *); +extern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace); +extern void vdev_init(vdev_t *, uint64_t txg); +extern void vdev_reopen(vdev_t *); +extern int vdev_validate_aux(vdev_t *vd); +extern zio_t *vdev_probe(vdev_t *vd, zio_t *pio); + +extern boolean_t vdev_is_bootable(vdev_t *vd); +extern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev); +extern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid); +extern void vdev_dtl_dirty(space_map_t *sm, uint64_t txg, uint64_t size); +extern int vdev_dtl_contains(space_map_t *sm, uint64_t txg, uint64_t size); +extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, + int scrub_done); +extern boolean_t vdev_resilver_needed(vdev_t *vd, + uint64_t *minp, uint64_t *maxp); + +extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg); +extern void vdev_metaslab_fini(vdev_t *vd); + +extern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs); +extern void vdev_clear_stats(vdev_t *vd); +extern void vdev_stat_update(zio_t *zio, uint64_t psize); +extern void vdev_scrub_stat_update(vdev_t *vd, pool_scrub_type_t type, + boolean_t complete); +extern int vdev_getspec(spa_t *spa, uint64_t vdev, char **vdev_spec); +extern void vdev_propagate_state(vdev_t *vd); +extern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state, + vdev_aux_t aux); + +extern void vdev_space_update(vdev_t *vd, int64_t space_delta, + int64_t alloc_delta, boolean_t update_root); + +extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize); + +extern int vdev_fault(spa_t *spa, uint64_t guid); +extern int vdev_degrade(spa_t *spa, uint64_t guid); +extern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags, + vdev_state_t *); +extern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags); +extern void vdev_clear(spa_t *spa, vdev_t *vd); + +extern boolean_t vdev_is_dead(vdev_t *vd); +extern boolean_t vdev_readable(vdev_t *vd); +extern boolean_t vdev_writeable(vdev_t *vd); +extern boolean_t vdev_allocatable(vdev_t *vd); +extern boolean_t vdev_accessible(vdev_t *vd, zio_t *zio); + +extern void vdev_cache_init(vdev_t *vd); +extern void vdev_cache_fini(vdev_t *vd); +extern int vdev_cache_read(zio_t *zio); +extern void vdev_cache_write(zio_t *zio); +extern void vdev_cache_purge(vdev_t *vd); + +extern void vdev_queue_init(vdev_t *vd); +extern void vdev_queue_fini(vdev_t *vd); +extern zio_t *vdev_queue_io(zio_t *zio); +extern void vdev_queue_io_done(zio_t *zio); + +extern void vdev_config_dirty(vdev_t *vd); +extern void vdev_config_clean(vdev_t *vd); +extern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg); + +extern void vdev_state_dirty(vdev_t *vd); +extern void vdev_state_clean(vdev_t *vd); + +extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd, + boolean_t getstats, boolean_t isspare, boolean_t isl2cache); + +/* + * Label routines + */ +struct uberblock; +extern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset); +extern int vdev_label_number(uint64_t psise, uint64_t offset); +extern nvlist_t *vdev_label_read_config(vdev_t *vd); +extern void vdev_uberblock_load(zio_t *zio, vdev_t *vd, struct uberblock *ub); + +typedef enum { + VDEV_LABEL_CREATE, /* create/add a new device */ + VDEV_LABEL_REPLACE, /* replace an existing device */ + VDEV_LABEL_SPARE, /* add a new hot spare */ + VDEV_LABEL_REMOVE, /* remove an existing device */ + VDEV_LABEL_L2CACHE /* add an L2ARC cache device */ +} vdev_labeltype_t; + +extern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason); + +#ifdef __cplusplus +} +#endif + +#endif /* _SYS_VDEV_H */ |