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Diffstat (limited to 'include/sys/vdev.h')
| -rw-r--r-- | include/sys/vdev.h | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/include/sys/vdev.h b/include/sys/vdev.h new file mode 100644 index 0000000000000..797065fdd0a53 --- /dev/null +++ b/include/sys/vdev.h @@ -0,0 +1,201 @@ +/* + * 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 (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2011, 2020 by Delphix. All rights reserved. + * Copyright (c) 2017, Intel Corporation. + * Copyright (c) 2019, Datto Inc. All rights reserved. + */ + +#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 + +typedef enum vdev_dtl_type { + DTL_MISSING, /* 0% replication: no copies of the data */ + DTL_PARTIAL, /* less than 100% replication: some copies missing */ + DTL_SCRUB, /* unable to fully repair during scrub/resilver */ + DTL_OUTAGE, /* temporarily missing (used to attempt detach) */ + DTL_TYPES +} vdev_dtl_type_t; + +extern int zfs_nocacheflush; + +extern void vdev_dbgmsg(vdev_t *vd, const char *fmt, ...); +extern void vdev_dbgmsg_print_tree(vdev_t *, int); +extern int vdev_open(vdev_t *); +extern void vdev_open_children(vdev_t *); +extern int vdev_validate(vdev_t *); +extern int vdev_copy_path_strict(vdev_t *, vdev_t *); +extern void vdev_copy_path_relaxed(vdev_t *, vdev_t *); +extern void vdev_close(vdev_t *); +extern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace); +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_concrete(vdev_t *vd); +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 int vdev_count_leaves(spa_t *spa); +extern void vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t d, + uint64_t txg, uint64_t size); +extern boolean_t vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t d, + uint64_t txg, uint64_t size); +extern boolean_t vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t d); +extern boolean_t vdev_dtl_need_resilver(vdev_t *vd, uint64_t off, size_t size); +extern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg, + boolean_t scrub_done, boolean_t rebuild_done); +extern boolean_t vdev_dtl_required(vdev_t *vd); +extern boolean_t vdev_resilver_needed(vdev_t *vd, + uint64_t *minp, uint64_t *maxp); +extern void vdev_destroy_unlink_zap(vdev_t *vd, uint64_t zapobj, + dmu_tx_t *tx); +extern uint64_t vdev_create_link_zap(vdev_t *vd, dmu_tx_t *tx); +extern void vdev_construct_zaps(vdev_t *vd, dmu_tx_t *tx); +extern void vdev_destroy_spacemaps(vdev_t *vd, dmu_tx_t *tx); +extern void vdev_indirect_mark_obsolete(vdev_t *vd, uint64_t offset, + uint64_t size); +extern void spa_vdev_indirect_mark_obsolete(spa_t *spa, uint64_t vdev, + uint64_t offset, uint64_t size, dmu_tx_t *tx); +extern boolean_t vdev_replace_in_progress(vdev_t *vdev); + +extern void vdev_hold(vdev_t *); +extern void vdev_rele(vdev_t *); + +extern int vdev_metaslab_init(vdev_t *vd, uint64_t txg); +extern void vdev_metaslab_fini(vdev_t *vd); +extern void vdev_metaslab_set_size(vdev_t *); +extern void vdev_ashift_optimize(vdev_t *); +extern void vdev_expand(vdev_t *vd, uint64_t txg); +extern void vdev_split(vdev_t *vd); +extern void vdev_deadman(vdev_t *vd, char *tag); +extern void vdev_xlate(vdev_t *vd, const range_seg64_t *logical_rs, + range_seg64_t *physical_rs); + +extern void vdev_get_stats_ex(vdev_t *vd, vdev_stat_t *vs, vdev_stat_ex_t *vsx); +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_scan_stat_init(vdev_t *vd); +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 boolean_t vdev_children_are_offline(vdev_t *vd); + +extern void vdev_space_update(vdev_t *vd, + int64_t alloc_delta, int64_t defer_delta, int64_t space_delta); + +extern int64_t vdev_deflated_space(vdev_t *vd, int64_t space); + +extern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize); + +extern int vdev_fault(spa_t *spa, uint64_t guid, vdev_aux_t aux); +extern int vdev_degrade(spa_t *spa, uint64_t guid, vdev_aux_t aux); +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 boolean_t vdev_is_spacemap_addressable(vdev_t *vd); + +extern void vdev_cache_init(vdev_t *vd); +extern void vdev_cache_fini(vdev_t *vd); +extern boolean_t 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_queue_change_io_priority(zio_t *zio, zio_priority_t priority); + +extern int vdev_queue_length(vdev_t *vd); +extern uint64_t vdev_queue_last_offset(vdev_t *vd); + +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 void vdev_defer_resilver(vdev_t *vd); +extern boolean_t vdev_clear_resilver_deferred(vdev_t *vd, dmu_tx_t *tx); + +typedef enum vdev_config_flag { + VDEV_CONFIG_SPARE = 1 << 0, + VDEV_CONFIG_L2CACHE = 1 << 1, + VDEV_CONFIG_REMOVING = 1 << 2, + VDEV_CONFIG_MOS = 1 << 3, + VDEV_CONFIG_MISSING = 1 << 4 +} vdev_config_flag_t; + +extern void vdev_top_config_generate(spa_t *spa, nvlist_t *config); +extern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd, + boolean_t getstats, vdev_config_flag_t flags); + +/* + * 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, uint64_t txg); +extern void vdev_uberblock_load(vdev_t *, struct uberblock *, nvlist_t **); +extern void vdev_config_generate_stats(vdev_t *vd, nvlist_t *nv); +extern void vdev_label_write(zio_t *zio, vdev_t *vd, int l, abd_t *buf, uint64_t + offset, uint64_t size, zio_done_func_t *done, void *priv, int flags); +extern int vdev_label_read_bootenv(vdev_t *, nvlist_t *); +extern int vdev_label_write_bootenv(vdev_t *, char *); + +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_LABEL_SPLIT /* generating new label for split-off dev */ +} 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 */ |