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4045 zfs write throttle & i/o scheduler performance work
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
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--- old/usr/src/uts/common/fs/zfs/sys/dsl_dir.h
+++ new/usr/src/uts/common/fs/zfs/sys/dsl_dir.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 + * Copyright (c) 2013 by Delphix. All rights reserved.
24 24 */
25 25
26 26 #ifndef _SYS_DSL_DIR_H
27 27 #define _SYS_DSL_DIR_H
28 28
29 29 #include <sys/dmu.h>
30 30 #include <sys/dsl_pool.h>
31 31 #include <sys/dsl_synctask.h>
32 32 #include <sys/refcount.h>
33 33 #include <sys/zfs_context.h>
34 34
35 35 #ifdef __cplusplus
36 36 extern "C" {
37 37 #endif
38 38
39 39 struct dsl_dataset;
40 40
41 41 typedef enum dd_used {
42 42 DD_USED_HEAD,
43 43 DD_USED_SNAP,
44 44 DD_USED_CHILD,
45 45 DD_USED_CHILD_RSRV,
46 46 DD_USED_REFRSRV,
47 47 DD_USED_NUM
48 48 } dd_used_t;
49 49
50 50 #define DD_FLAG_USED_BREAKDOWN (1<<0)
51 51
52 52 typedef struct dsl_dir_phys {
53 53 uint64_t dd_creation_time; /* not actually used */
54 54 uint64_t dd_head_dataset_obj;
55 55 uint64_t dd_parent_obj;
56 56 uint64_t dd_origin_obj;
57 57 uint64_t dd_child_dir_zapobj;
58 58 /*
59 59 * how much space our children are accounting for; for leaf
60 60 * datasets, == physical space used by fs + snaps
61 61 */
62 62 uint64_t dd_used_bytes;
63 63 uint64_t dd_compressed_bytes;
64 64 uint64_t dd_uncompressed_bytes;
65 65 /* Administrative quota setting */
66 66 uint64_t dd_quota;
67 67 /* Administrative reservation setting */
68 68 uint64_t dd_reserved;
69 69 uint64_t dd_props_zapobj;
70 70 uint64_t dd_deleg_zapobj; /* dataset delegation permissions */
71 71 uint64_t dd_flags;
72 72 uint64_t dd_used_breakdown[DD_USED_NUM];
73 73 uint64_t dd_clones; /* dsl_dir objects */
74 74 uint64_t dd_pad[13]; /* pad out to 256 bytes for good measure */
75 75 } dsl_dir_phys_t;
76 76
77 77 struct dsl_dir {
78 78 /* These are immutable; no lock needed: */
79 79 uint64_t dd_object;
80 80 dsl_dir_phys_t *dd_phys;
81 81 dmu_buf_t *dd_dbuf;
82 82 dsl_pool_t *dd_pool;
83 83
84 84 /* protected by lock on pool's dp_dirty_dirs list */
85 85 txg_node_t dd_dirty_link;
86 86
87 87 /* protected by dp_config_rwlock */
88 88 dsl_dir_t *dd_parent;
89 89
90 90 /* Protected by dd_lock */
91 91 kmutex_t dd_lock;
92 92 list_t dd_prop_cbs; /* list of dsl_prop_cb_record_t's */
93 93 timestruc_t dd_snap_cmtime; /* last time snapshot namespace changed */
94 94 uint64_t dd_origin_txg;
95 95
96 96 /* gross estimate of space used by in-flight tx's */
97 97 uint64_t dd_tempreserved[TXG_SIZE];
98 98 /* amount of space we expect to write; == amount of dirty data */
99 99 int64_t dd_space_towrite[TXG_SIZE];
100 100
101 101 /* protected by dd_lock; keep at end of struct for better locality */
102 102 char dd_myname[MAXNAMELEN];
103 103 };
104 104
105 105 void dsl_dir_rele(dsl_dir_t *dd, void *tag);
106 106 int dsl_dir_hold(dsl_pool_t *dp, const char *name, void *tag,
107 107 dsl_dir_t **, const char **tail);
108 108 int dsl_dir_hold_obj(dsl_pool_t *dp, uint64_t ddobj,
109 109 const char *tail, void *tag, dsl_dir_t **);
110 110 void dsl_dir_name(dsl_dir_t *dd, char *buf);
111 111 int dsl_dir_namelen(dsl_dir_t *dd);
112 112 uint64_t dsl_dir_create_sync(dsl_pool_t *dp, dsl_dir_t *pds,
113 113 const char *name, dmu_tx_t *tx);
114 114 void dsl_dir_stats(dsl_dir_t *dd, nvlist_t *nv);
115 115 uint64_t dsl_dir_space_available(dsl_dir_t *dd,
116 116 dsl_dir_t *ancestor, int64_t delta, int ondiskonly);
117 117 void dsl_dir_dirty(dsl_dir_t *dd, dmu_tx_t *tx);
118 118 void dsl_dir_sync(dsl_dir_t *dd, dmu_tx_t *tx);
119 119 int dsl_dir_tempreserve_space(dsl_dir_t *dd, uint64_t mem,
120 120 uint64_t asize, uint64_t fsize, uint64_t usize, void **tr_cookiep,
121 121 dmu_tx_t *tx);
122 122 void dsl_dir_tempreserve_clear(void *tr_cookie, dmu_tx_t *tx);
123 123 void dsl_dir_willuse_space(dsl_dir_t *dd, int64_t space, dmu_tx_t *tx);
124 124 void dsl_dir_diduse_space(dsl_dir_t *dd, dd_used_t type,
125 125 int64_t used, int64_t compressed, int64_t uncompressed, dmu_tx_t *tx);
126 126 void dsl_dir_transfer_space(dsl_dir_t *dd, int64_t delta,
127 127 dd_used_t oldtype, dd_used_t newtype, dmu_tx_t *tx);
128 128 int dsl_dir_set_quota(const char *ddname, zprop_source_t source,
129 129 uint64_t quota);
130 130 int dsl_dir_set_reservation(const char *ddname, zprop_source_t source,
131 131 uint64_t reservation);
132 132 int dsl_dir_rename(const char *oldname, const char *newname);
133 133 int dsl_dir_transfer_possible(dsl_dir_t *sdd, dsl_dir_t *tdd, uint64_t space);
134 134 boolean_t dsl_dir_is_clone(dsl_dir_t *dd);
135 135 void dsl_dir_new_refreservation(dsl_dir_t *dd, struct dsl_dataset *ds,
136 136 uint64_t reservation, cred_t *cr, dmu_tx_t *tx);
137 137 void dsl_dir_snap_cmtime_update(dsl_dir_t *dd);
138 138 timestruc_t dsl_dir_snap_cmtime(dsl_dir_t *dd);
139 139 void dsl_dir_set_reservation_sync_impl(dsl_dir_t *dd, uint64_t value,
140 140 dmu_tx_t *tx);
141 141
142 142 /* internal reserved dir name */
143 143 #define MOS_DIR_NAME "$MOS"
144 144 #define ORIGIN_DIR_NAME "$ORIGIN"
145 145 #define XLATION_DIR_NAME "$XLATION"
146 146 #define FREE_DIR_NAME "$FREE"
147 147
148 148 #ifdef ZFS_DEBUG
149 149 #define dprintf_dd(dd, fmt, ...) do { \
150 150 if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
151 151 char *__ds_name = kmem_alloc(MAXNAMELEN + strlen(MOS_DIR_NAME) + 1, \
152 152 KM_SLEEP); \
153 153 dsl_dir_name(dd, __ds_name); \
154 154 dprintf("dd=%s " fmt, __ds_name, __VA_ARGS__); \
155 155 kmem_free(__ds_name, MAXNAMELEN + strlen(MOS_DIR_NAME) + 1); \
156 156 } \
157 157 _NOTE(CONSTCOND) } while (0)
158 158 #else
159 159 #define dprintf_dd(dd, fmt, ...)
160 160 #endif
161 161
162 162 #ifdef __cplusplus
163 163 }
164 164 #endif
165 165
166 166 #endif /* _SYS_DSL_DIR_H */
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