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2882 implement libzfs_core
2883 changing "canmount" property to "on" should not always remount dataset
2900 "zfs snapshot" should be able to create multiple, arbitrary snapshots at once
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Chris Siden <christopher.siden@delphix.com>
Reviewed by: Garrett D'Amore <garrett@damore.org>
Reviewed by: Bill Pijewski <wdp@joyent.com>
Reviewed by: Dan Kruchinin <dan.kruchinin@gmail.com>
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--- old/usr/src/uts/common/fs/zfs/sys/dmu_objset.h
+++ new/usr/src/uts/common/fs/zfs/sys/dmu_objset.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
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13 13 * When distributing Covered Code, include this CDDL HEADER in each
14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21 /*
22 22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 + * Copyright (c) 2012 by Delphix. All rights reserved.
23 24 */
24 25
25 26 /* Portions Copyright 2010 Robert Milkowski */
26 27
27 28 #ifndef _SYS_DMU_OBJSET_H
28 29 #define _SYS_DMU_OBJSET_H
29 30
30 31 #include <sys/spa.h>
31 32 #include <sys/arc.h>
32 33 #include <sys/txg.h>
33 34 #include <sys/zfs_context.h>
34 35 #include <sys/dnode.h>
35 36 #include <sys/zio.h>
36 37 #include <sys/zil.h>
37 38 #include <sys/sa.h>
38 39
39 40 #ifdef __cplusplus
40 41 extern "C" {
41 42 #endif
42 43
43 44 extern krwlock_t os_lock;
44 45
45 46 struct dsl_dataset;
46 47 struct dmu_tx;
47 48
48 49 #define OBJSET_PHYS_SIZE 2048
49 50 #define OBJSET_OLD_PHYS_SIZE 1024
50 51
51 52 #define OBJSET_BUF_HAS_USERUSED(buf) \
52 53 (arc_buf_size(buf) > OBJSET_OLD_PHYS_SIZE)
53 54
54 55 #define OBJSET_FLAG_USERACCOUNTING_COMPLETE (1ULL<<0)
55 56
56 57 typedef struct objset_phys {
57 58 dnode_phys_t os_meta_dnode;
58 59 zil_header_t os_zil_header;
59 60 uint64_t os_type;
60 61 uint64_t os_flags;
61 62 char os_pad[OBJSET_PHYS_SIZE - sizeof (dnode_phys_t)*3 -
62 63 sizeof (zil_header_t) - sizeof (uint64_t)*2];
63 64 dnode_phys_t os_userused_dnode;
64 65 dnode_phys_t os_groupused_dnode;
65 66 } objset_phys_t;
66 67
67 68 struct objset {
68 69 /* Immutable: */
69 70 struct dsl_dataset *os_dsl_dataset;
70 71 spa_t *os_spa;
71 72 arc_buf_t *os_phys_buf;
72 73 objset_phys_t *os_phys;
73 74 /*
74 75 * The following "special" dnodes have no parent and are exempt from
75 76 * dnode_move(), but they root their descendents in this objset using
76 77 * handles anyway, so that all access to dnodes from dbufs consistently
77 78 * uses handles.
78 79 */
79 80 dnode_handle_t os_meta_dnode;
80 81 dnode_handle_t os_userused_dnode;
81 82 dnode_handle_t os_groupused_dnode;
82 83 zilog_t *os_zil;
83 84
84 85 /* can change, under dsl_dir's locks: */
85 86 uint8_t os_checksum;
86 87 uint8_t os_compress;
87 88 uint8_t os_copies;
88 89 uint8_t os_dedup_checksum;
89 90 uint8_t os_dedup_verify;
90 91 uint8_t os_logbias;
91 92 uint8_t os_primary_cache;
92 93 uint8_t os_secondary_cache;
93 94 uint8_t os_sync;
94 95
95 96 /* no lock needed: */
96 97 struct dmu_tx *os_synctx; /* XXX sketchy */
97 98 blkptr_t *os_rootbp;
98 99 zil_header_t os_zil_header;
99 100 list_t os_synced_dnodes;
100 101 uint64_t os_flags;
101 102
102 103 /* Protected by os_obj_lock */
103 104 kmutex_t os_obj_lock;
104 105 uint64_t os_obj_next;
105 106
106 107 /* Protected by os_lock */
107 108 kmutex_t os_lock;
108 109 list_t os_dirty_dnodes[TXG_SIZE];
109 110 list_t os_free_dnodes[TXG_SIZE];
110 111 list_t os_dnodes;
111 112 list_t os_downgraded_dbufs;
112 113
113 114 /* stuff we store for the user */
114 115 kmutex_t os_user_ptr_lock;
115 116 void *os_user_ptr;
116 117
117 118 /* SA layout/attribute registration */
118 119 sa_os_t *os_sa;
119 120 };
120 121
121 122 #define DMU_META_OBJSET 0
122 123 #define DMU_META_DNODE_OBJECT 0
123 124 #define DMU_OBJECT_IS_SPECIAL(obj) ((int64_t)(obj) <= 0)
124 125 #define DMU_META_DNODE(os) ((os)->os_meta_dnode.dnh_dnode)
125 126 #define DMU_USERUSED_DNODE(os) ((os)->os_userused_dnode.dnh_dnode)
126 127 #define DMU_GROUPUSED_DNODE(os) ((os)->os_groupused_dnode.dnh_dnode)
127 128
128 129 #define DMU_OS_IS_L2CACHEABLE(os) \
129 130 ((os)->os_secondary_cache == ZFS_CACHE_ALL || \
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130 131 (os)->os_secondary_cache == ZFS_CACHE_METADATA)
131 132
132 133 /* called from zpl */
133 134 int dmu_objset_hold(const char *name, void *tag, objset_t **osp);
134 135 int dmu_objset_own(const char *name, dmu_objset_type_t type,
135 136 boolean_t readonly, void *tag, objset_t **osp);
136 137 void dmu_objset_rele(objset_t *os, void *tag);
137 138 void dmu_objset_disown(objset_t *os, void *tag);
138 139 int dmu_objset_from_ds(struct dsl_dataset *ds, objset_t **osp);
139 140
140 -int dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags,
141 - void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg);
142 -int dmu_objset_clone(const char *name, struct dsl_dataset *clone_origin,
143 - uint64_t flags);
144 -int dmu_objset_destroy(const char *name, boolean_t defer);
145 -int dmu_objset_snapshot(char *fsname, char *snapname, char *tag,
146 - struct nvlist *props, boolean_t recursive, boolean_t temporary, int fd);
147 141 void dmu_objset_stats(objset_t *os, nvlist_t *nv);
148 142 void dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat);
149 143 void dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp,
150 144 uint64_t *usedobjsp, uint64_t *availobjsp);
151 145 uint64_t dmu_objset_fsid_guid(objset_t *os);
152 -int dmu_objset_find(char *name, int func(const char *, void *), void *arg,
153 - int flags);
154 146 int dmu_objset_find_spa(spa_t *spa, const char *name,
155 147 int func(spa_t *, uint64_t, const char *, void *), void *arg, int flags);
156 148 int dmu_objset_prefetch(const char *name, void *arg);
157 -void dmu_objset_byteswap(void *buf, size_t size);
158 149 int dmu_objset_evict_dbufs(objset_t *os);
159 150 timestruc_t dmu_objset_snap_cmtime(objset_t *os);
160 151
161 152 /* called from dsl */
162 153 void dmu_objset_sync(objset_t *os, zio_t *zio, dmu_tx_t *tx);
163 154 boolean_t dmu_objset_is_dirty(objset_t *os, uint64_t txg);
164 155 boolean_t dmu_objset_is_dirty_anywhere(objset_t *os);
165 156 objset_t *dmu_objset_create_impl(spa_t *spa, struct dsl_dataset *ds,
166 157 blkptr_t *bp, dmu_objset_type_t type, dmu_tx_t *tx);
167 158 int dmu_objset_open_impl(spa_t *spa, struct dsl_dataset *ds, blkptr_t *bp,
168 159 objset_t **osp);
169 160 void dmu_objset_evict(objset_t *os);
170 161 void dmu_objset_do_userquota_updates(objset_t *os, dmu_tx_t *tx);
171 162 void dmu_objset_userquota_get_ids(dnode_t *dn, boolean_t before, dmu_tx_t *tx);
172 163 boolean_t dmu_objset_userused_enabled(objset_t *os);
173 164 int dmu_objset_userspace_upgrade(objset_t *os);
174 165 boolean_t dmu_objset_userspace_present(objset_t *os);
175 166
176 167 void dmu_objset_init(void);
177 168 void dmu_objset_fini(void);
178 169
179 170 #ifdef __cplusplus
180 171 }
181 172 #endif
182 173
183 174 #endif /* _SYS_DMU_OBJSET_H */
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