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34dc7c2f BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | /* | |
428870ff | 22 | * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
cc9bb3e5 | 23 | * Copyright (c) 2012, 2015 by Delphix. All rights reserved. |
3a17a7a9 | 24 | * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. |
0c66c32d | 25 | * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. |
34dc7c2f BB |
26 | */ |
27 | ||
428870ff BB |
28 | /* Portions Copyright 2010 Robert Milkowski */ |
29 | ||
34dc7c2f BB |
30 | #ifndef _SYS_DMU_OBJSET_H |
31 | #define _SYS_DMU_OBJSET_H | |
32 | ||
34dc7c2f BB |
33 | #include <sys/spa.h> |
34 | #include <sys/arc.h> | |
35 | #include <sys/txg.h> | |
36 | #include <sys/zfs_context.h> | |
37 | #include <sys/dnode.h> | |
38 | #include <sys/zio.h> | |
39 | #include <sys/zil.h> | |
428870ff | 40 | #include <sys/sa.h> |
34dc7c2f BB |
41 | |
42 | #ifdef __cplusplus | |
43 | extern "C" { | |
44 | #endif | |
45 | ||
572e2857 BB |
46 | extern krwlock_t os_lock; |
47 | ||
13fe0198 | 48 | struct dsl_pool; |
34dc7c2f BB |
49 | struct dsl_dataset; |
50 | struct dmu_tx; | |
34dc7c2f | 51 | |
9babb374 BB |
52 | #define OBJSET_PHYS_SIZE 2048 |
53 | #define OBJSET_OLD_PHYS_SIZE 1024 | |
54 | ||
428870ff BB |
55 | #define OBJSET_BUF_HAS_USERUSED(buf) \ |
56 | (arc_buf_size(buf) > OBJSET_OLD_PHYS_SIZE) | |
57 | ||
9babb374 | 58 | #define OBJSET_FLAG_USERACCOUNTING_COMPLETE (1ULL<<0) |
1de321e6 | 59 | #define OBJSET_FLAG_USEROBJACCOUNTING_COMPLETE (1ULL<<1) |
9babb374 | 60 | |
34dc7c2f BB |
61 | typedef struct objset_phys { |
62 | dnode_phys_t os_meta_dnode; | |
63 | zil_header_t os_zil_header; | |
64 | uint64_t os_type; | |
9babb374 BB |
65 | uint64_t os_flags; |
66 | char os_pad[OBJSET_PHYS_SIZE - sizeof (dnode_phys_t)*3 - | |
67 | sizeof (zil_header_t) - sizeof (uint64_t)*2]; | |
68 | dnode_phys_t os_userused_dnode; | |
69 | dnode_phys_t os_groupused_dnode; | |
34dc7c2f BB |
70 | } objset_phys_t; |
71 | ||
1de321e6 JX |
72 | typedef int (*dmu_objset_upgrade_cb_t)(objset_t *); |
73 | ||
34dc7c2f | 74 | struct objset { |
34dc7c2f BB |
75 | /* Immutable: */ |
76 | struct dsl_dataset *os_dsl_dataset; | |
77 | spa_t *os_spa; | |
78 | arc_buf_t *os_phys_buf; | |
79 | objset_phys_t *os_phys; | |
572e2857 | 80 | /* |
0c66c32d JG |
81 | * The following "special" dnodes have no parent, are exempt |
82 | * from dnode_move(), and are not recorded in os_dnodes, but they | |
83 | * root their descendents in this objset using handles anyway, so | |
84 | * that all access to dnodes from dbufs consistently uses handles. | |
572e2857 BB |
85 | */ |
86 | dnode_handle_t os_meta_dnode; | |
87 | dnode_handle_t os_userused_dnode; | |
88 | dnode_handle_t os_groupused_dnode; | |
34dc7c2f | 89 | zilog_t *os_zil; |
428870ff | 90 | |
0c66c32d JG |
91 | list_node_t os_evicting_node; |
92 | ||
428870ff | 93 | /* can change, under dsl_dir's locks: */ |
50c957f7 | 94 | uint64_t os_dnodesize; /* default dnode size for new objects */ |
faf0f58c MA |
95 | enum zio_checksum os_checksum; |
96 | enum zio_compress os_compress; | |
428870ff | 97 | uint8_t os_copies; |
faf0f58c MA |
98 | enum zio_checksum os_dedup_checksum; |
99 | boolean_t os_dedup_verify; | |
100 | zfs_logbias_op_t os_logbias; | |
101 | zfs_cache_type_t os_primary_cache; | |
102 | zfs_cache_type_t os_secondary_cache; | |
103 | zfs_sync_type_t os_sync; | |
104 | zfs_redundant_metadata_type_t os_redundant_metadata; | |
f1512ee6 | 105 | int os_recordsize; |
34dc7c2f | 106 | |
cc9bb3e5 GM |
107 | /* |
108 | * Pointer is constant; the blkptr it points to is protected by | |
109 | * os_dsl_dataset->ds_bp_rwlock | |
110 | */ | |
111 | blkptr_t *os_rootbp; | |
112 | ||
34dc7c2f BB |
113 | /* no lock needed: */ |
114 | struct dmu_tx *os_synctx; /* XXX sketchy */ | |
b128c09f | 115 | zil_header_t os_zil_header; |
9babb374 BB |
116 | list_t os_synced_dnodes; |
117 | uint64_t os_flags; | |
68cbd56e NB |
118 | uint64_t os_freed_dnodes; |
119 | boolean_t os_rescan_dnodes; | |
34dc7c2f BB |
120 | |
121 | /* Protected by os_obj_lock */ | |
122 | kmutex_t os_obj_lock; | |
123 | uint64_t os_obj_next; | |
124 | ||
125 | /* Protected by os_lock */ | |
126 | kmutex_t os_lock; | |
127 | list_t os_dirty_dnodes[TXG_SIZE]; | |
128 | list_t os_free_dnodes[TXG_SIZE]; | |
129 | list_t os_dnodes; | |
130 | list_t os_downgraded_dbufs; | |
131 | ||
132 | /* stuff we store for the user */ | |
133 | kmutex_t os_user_ptr_lock; | |
134 | void *os_user_ptr; | |
428870ff | 135 | sa_os_t *os_sa; |
1de321e6 JX |
136 | |
137 | /* kernel thread to upgrade this dataset */ | |
138 | kmutex_t os_upgrade_lock; | |
139 | taskqid_t os_upgrade_id; | |
140 | dmu_objset_upgrade_cb_t os_upgrade_cb; | |
141 | boolean_t os_upgrade_exit; | |
142 | int os_upgrade_status; | |
428870ff BB |
143 | }; |
144 | ||
145 | #define DMU_META_OBJSET 0 | |
34dc7c2f | 146 | #define DMU_META_DNODE_OBJECT 0 |
9babb374 | 147 | #define DMU_OBJECT_IS_SPECIAL(obj) ((int64_t)(obj) <= 0) |
572e2857 BB |
148 | #define DMU_META_DNODE(os) ((os)->os_meta_dnode.dnh_dnode) |
149 | #define DMU_USERUSED_DNODE(os) ((os)->os_userused_dnode.dnh_dnode) | |
150 | #define DMU_GROUPUSED_DNODE(os) ((os)->os_groupused_dnode.dnh_dnode) | |
34dc7c2f | 151 | |
b128c09f BB |
152 | #define DMU_OS_IS_L2CACHEABLE(os) \ |
153 | ((os)->os_secondary_cache == ZFS_CACHE_ALL || \ | |
154 | (os)->os_secondary_cache == ZFS_CACHE_METADATA) | |
155 | ||
34dc7c2f | 156 | /* called from zpl */ |
428870ff BB |
157 | int dmu_objset_hold(const char *name, void *tag, objset_t **osp); |
158 | int dmu_objset_own(const char *name, dmu_objset_type_t type, | |
159 | boolean_t readonly, void *tag, objset_t **osp); | |
9c43027b AJ |
160 | int dmu_objset_own_obj(struct dsl_pool *dp, uint64_t obj, |
161 | dmu_objset_type_t type, boolean_t readonly, void *tag, objset_t **osp); | |
831baf06 | 162 | void dmu_objset_refresh_ownership(objset_t *os, void *tag); |
428870ff BB |
163 | void dmu_objset_rele(objset_t *os, void *tag); |
164 | void dmu_objset_disown(objset_t *os, void *tag); | |
165 | int dmu_objset_from_ds(struct dsl_dataset *ds, objset_t **osp); | |
166 | ||
34dc7c2f BB |
167 | void dmu_objset_stats(objset_t *os, nvlist_t *nv); |
168 | void dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat); | |
169 | void dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp, | |
170 | uint64_t *usedobjsp, uint64_t *availobjsp); | |
171 | uint64_t dmu_objset_fsid_guid(objset_t *os); | |
13fe0198 MA |
172 | int dmu_objset_find_dp(struct dsl_pool *dp, uint64_t ddobj, |
173 | int func(struct dsl_pool *, struct dsl_dataset *, void *), | |
174 | void *arg, int flags); | |
175 | void dmu_objset_evict_dbufs(objset_t *os); | |
428870ff | 176 | timestruc_t dmu_objset_snap_cmtime(objset_t *os); |
34dc7c2f BB |
177 | |
178 | /* called from dsl */ | |
428870ff BB |
179 | void dmu_objset_sync(objset_t *os, zio_t *zio, dmu_tx_t *tx); |
180 | boolean_t dmu_objset_is_dirty(objset_t *os, uint64_t txg); | |
181 | objset_t *dmu_objset_create_impl(spa_t *spa, struct dsl_dataset *ds, | |
34dc7c2f BB |
182 | blkptr_t *bp, dmu_objset_type_t type, dmu_tx_t *tx); |
183 | int dmu_objset_open_impl(spa_t *spa, struct dsl_dataset *ds, blkptr_t *bp, | |
428870ff BB |
184 | objset_t **osp); |
185 | void dmu_objset_evict(objset_t *os); | |
186 | void dmu_objset_do_userquota_updates(objset_t *os, dmu_tx_t *tx); | |
187 | void dmu_objset_userquota_get_ids(dnode_t *dn, boolean_t before, dmu_tx_t *tx); | |
188 | boolean_t dmu_objset_userused_enabled(objset_t *os); | |
9babb374 BB |
189 | int dmu_objset_userspace_upgrade(objset_t *os); |
190 | boolean_t dmu_objset_userspace_present(objset_t *os); | |
1de321e6 | 191 | boolean_t dmu_objset_userobjused_enabled(objset_t *os); |
126ae9f4 | 192 | boolean_t dmu_objset_userobjspace_upgradable(objset_t *os); |
1de321e6 JX |
193 | void dmu_objset_userobjspace_upgrade(objset_t *os); |
194 | boolean_t dmu_objset_userobjspace_present(objset_t *os); | |
195 | ||
13fe0198 | 196 | int dmu_fsname(const char *snapname, char *buf); |
34dc7c2f | 197 | |
0c66c32d JG |
198 | void dmu_objset_evict_done(objset_t *os); |
199 | ||
572e2857 BB |
200 | void dmu_objset_init(void); |
201 | void dmu_objset_fini(void); | |
202 | ||
34dc7c2f BB |
203 | #ifdef __cplusplus |
204 | } | |
205 | #endif | |
206 | ||
207 | #endif /* _SYS_DMU_OBJSET_H */ |