vdev.h revision 681d9761e8516a7dc5ab6589e2dfe717777e1123
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER START
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * The contents of this file are subject to the terms of the
441d80aa4f613b6298fc8bd3151f4be02dbf84fclling * Common Development and Distribution License (the "License").
441d80aa4f613b6298fc8bd3151f4be02dbf84fclling * You may not use this file except in compliance with the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
fa9e4066f08beec538e775443c5be79dd423fcabahrens * or http://www.opensolaris.org/os/licensing.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * See the License for the specific language governing permissions
fa9e4066f08beec538e775443c5be79dd423fcabahrens * and limitations under the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * When distributing Covered Code, include this CDDL HEADER in each
fa9e4066f08beec538e775443c5be79dd423fcabahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * If applicable, add the following below this CDDL HEADER, with the
fa9e4066f08beec538e775443c5be79dd423fcabahrens * fields enclosed by brackets "[]" replaced with your own identifying
fa9e4066f08beec538e775443c5be79dd423fcabahrens * information: Portions Copyright [yyyy] [name of copyright owner]
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER END
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
8956713aded83a741173fcd4f9ef1c83521fbea9Eric Schrock * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Use is subject to license terms.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#ifndef _SYS_VDEV_H
fa9e4066f08beec538e775443c5be79dd423fcabahrens#define _SYS_VDEV_H
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/spa.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/zio.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/dmu.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/space_map.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/fs/zfs.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#ifdef __cplusplus
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern "C" {
fa9e4066f08beec538e775443c5be79dd423fcabahrens#endif
fa9e4066f08beec538e775443c5be79dd423fcabahrens
8ad4d6dd86f5bc65fb3afa566c8133f3bac21648Jeff Bonwicktypedef enum vdev_dtl_type {
8ad4d6dd86f5bc65fb3afa566c8133f3bac21648Jeff Bonwick DTL_MISSING, /* 0% replication: no copies of the data */
8ad4d6dd86f5bc65fb3afa566c8133f3bac21648Jeff Bonwick DTL_PARTIAL, /* less than 100% replication: some copies missing */
8ad4d6dd86f5bc65fb3afa566c8133f3bac21648Jeff Bonwick DTL_SCRUB, /* unable to fully repair during scrub/resilver */
8ad4d6dd86f5bc65fb3afa566c8133f3bac21648Jeff Bonwick DTL_OUTAGE, /* temporarily missing (used to attempt detach) */
8ad4d6dd86f5bc65fb3afa566c8133f3bac21648Jeff Bonwick DTL_TYPES
8ad4d6dd86f5bc65fb3afa566c8133f3bac21648Jeff Bonwick} vdev_dtl_type_t;
8ad4d6dd86f5bc65fb3afa566c8133f3bac21648Jeff Bonwick
416e0cd82df71e380f21199abde8c5f7a18bac51ekextern boolean_t zfs_nocacheflush;
416e0cd82df71e380f21199abde8c5f7a18bac51ek
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern int vdev_open(vdev_t *);
681d9761e8516a7dc5ab6589e2dfe717777e1123Eric Taylorextern void vdev_open_children(vdev_t *);
681d9761e8516a7dc5ab6589e2dfe717777e1123Eric Taylorextern boolean_t vdev_uses_zvols(vdev_t *);
560e6e964ab70b838deafc93f6d9da97f690ec25eschrockextern int vdev_validate(vdev_t *);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_close(vdev_t *);
99653d4ee642c6528e88224f12409a5f23060994eschrockextern int vdev_create(vdev_t *, uint64_t txg, boolean_t isreplace);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrockextern void vdev_reopen(vdev_t *);
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendanextern int vdev_validate_aux(vdev_t *vd);
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwickextern zio_t *vdev_probe(vdev_t *vd, zio_t *pio);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
15e6edf145a9c2bb0e0272cf8debe823bb97529bgwextern boolean_t vdev_is_bootable(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern vdev_t *vdev_lookup_top(spa_t *spa, uint64_t vdev);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern vdev_t *vdev_lookup_by_guid(vdev_t *vd, uint64_t guid);
8ad4d6dd86f5bc65fb3afa566c8133f3bac21648Jeff Bonwickextern void vdev_dtl_dirty(vdev_t *vd, vdev_dtl_type_t d,
8ad4d6dd86f5bc65fb3afa566c8133f3bac21648Jeff Bonwick uint64_t txg, uint64_t size);
8ad4d6dd86f5bc65fb3afa566c8133f3bac21648Jeff Bonwickextern boolean_t vdev_dtl_contains(vdev_t *vd, vdev_dtl_type_t d,
8ad4d6dd86f5bc65fb3afa566c8133f3bac21648Jeff Bonwick uint64_t txg, uint64_t size);
8ad4d6dd86f5bc65fb3afa566c8133f3bac21648Jeff Bonwickextern boolean_t vdev_dtl_empty(vdev_t *vd, vdev_dtl_type_t d);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_dtl_reassess(vdev_t *vd, uint64_t txg, uint64_t scrub_txg,
fa9e4066f08beec538e775443c5be79dd423fcabahrens int scrub_done);
8ad4d6dd86f5bc65fb3afa566c8133f3bac21648Jeff Bonwickextern boolean_t vdev_dtl_required(vdev_t *vd);
088f389458728c464569a5506b58070254fa4f7dahrensextern boolean_t vdev_resilver_needed(vdev_t *vd,
088f389458728c464569a5506b58070254fa4f7dahrens uint64_t *minp, uint64_t *maxp);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrockextern int vdev_metaslab_init(vdev_t *vd, uint64_t txg);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_metaslab_fini(vdev_t *vd);
573ca77e53dd31dcaebef023e7eb41969e6896c1George Wilsonextern void vdev_metaslab_set_size(vdev_t *);
573ca77e53dd31dcaebef023e7eb41969e6896c1George Wilsonextern void vdev_expand(vdev_t *vd, uint64_t txg);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_get_stats(vdev_t *vd, vdev_stat_t *vs);
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendanextern void vdev_clear_stats(vdev_t *vd);
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwickextern void vdev_stat_update(zio_t *zio, uint64_t psize);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_scrub_stat_update(vdev_t *vd, pool_scrub_type_t type,
fa9e4066f08beec538e775443c5be79dd423fcabahrens boolean_t complete);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern int vdev_getspec(spa_t *spa, uint64_t vdev, char **vdev_spec);
44cd46cadd9aab751dae6a4023c1cb5bf316d274billmextern void vdev_propagate_state(vdev_t *vd);
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrockextern void vdev_set_state(vdev_t *vd, boolean_t isopen, vdev_state_t state,
ea8dc4b6d2251b437950c0056bc626b311c73c27eschrock vdev_aux_t aux);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrockextern void vdev_space_update(vdev_t *vd, int64_t space_delta,
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan int64_t alloc_delta, boolean_t update_root);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern uint64_t vdev_psize_to_asize(vdev_t *vd, uint64_t psize);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
3d7072f8bd27709dba14f6fe336f149d25d9e207eschrockextern int vdev_fault(spa_t *spa, uint64_t guid);
3d7072f8bd27709dba14f6fe336f149d25d9e207eschrockextern int vdev_degrade(spa_t *spa, uint64_t guid);
3d7072f8bd27709dba14f6fe336f149d25d9e207eschrockextern int vdev_online(spa_t *spa, uint64_t guid, uint64_t flags,
3d7072f8bd27709dba14f6fe336f149d25d9e207eschrock vdev_state_t *);
3d7072f8bd27709dba14f6fe336f149d25d9e207eschrockextern int vdev_offline(spa_t *spa, uint64_t guid, uint64_t flags);
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwickextern void vdev_clear(spa_t *spa, vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwickextern boolean_t vdev_is_dead(vdev_t *vd);
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwickextern boolean_t vdev_readable(vdev_t *vd);
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwickextern boolean_t vdev_writeable(vdev_t *vd);
a31e67878a1bf006016a43cafa1fdffa37e432e6George Wilsonextern boolean_t vdev_allocatable(vdev_t *vd);
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwickextern boolean_t vdev_accessible(vdev_t *vd, zio_t *zio);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_cache_init(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_cache_fini(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern int vdev_cache_read(zio_t *zio);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_cache_write(zio_t *zio);
3d7072f8bd27709dba14f6fe336f149d25d9e207eschrockextern void vdev_cache_purge(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_queue_init(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_queue_fini(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern zio_t *vdev_queue_io(zio_t *zio);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_queue_io_done(zio_t *zio);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_config_dirty(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_config_clean(vdev_t *vd);
8956713aded83a741173fcd4f9ef1c83521fbea9Eric Schrockextern int vdev_config_sync(vdev_t **svd, int svdcount, uint64_t txg,
8956713aded83a741173fcd4f9ef1c83521fbea9Eric Schrock boolean_t);
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwick
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwickextern void vdev_state_dirty(vdev_t *vd);
e14bb3258d05c1b1077e2db7cf77088924e56919Jeff Bonwickextern void vdev_state_clean(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
99653d4ee642c6528e88224f12409a5f23060994eschrockextern nvlist_t *vdev_config_generate(spa_t *spa, vdev_t *vd,
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan boolean_t getstats, boolean_t isspare, boolean_t isl2cache);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * Label routines
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrensstruct uberblock;
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern uint64_t vdev_label_offset(uint64_t psize, int l, uint64_t offset);
21bf64a78855d076f09716ea1c06175d954e934cgwextern int vdev_label_number(uint64_t psise, uint64_t offset);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern nvlist_t *vdev_label_read_config(vdev_t *vd);
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern void vdev_uberblock_load(zio_t *zio, vdev_t *vd, struct uberblock *ub);
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrocktypedef enum {
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock VDEV_LABEL_CREATE, /* create/add a new device */
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock VDEV_LABEL_REPLACE, /* replace an existing device */
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock VDEV_LABEL_SPARE, /* add a new hot spare */
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan VDEV_LABEL_REMOVE, /* remove an existing device */
fa94a07fd0519b8abfd871ad8fe60e6bebe1e2bbbrendan VDEV_LABEL_L2CACHE /* add an L2ARC cache device */
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock} vdev_labeltype_t;
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrock
39c23413b8df94a95f67b34cfd4a4dfc3fd0b48deschrockextern int vdev_label_init(vdev_t *vd, uint64_t txg, vdev_labeltype_t reason);
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#ifdef __cplusplus
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens#endif
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#endif /* _SYS_VDEV_H */