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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. |
9ae529ec | 23 | * Copyright (c) 2012 by Delphix. All rights reserved. |
3541dc6d | 24 | * Copyright 2011 Nexenta Systems, Inc. All rights reserved. |
34dc7c2f BB |
25 | */ |
26 | ||
27 | #ifndef _SYS_SPA_IMPL_H | |
28 | #define _SYS_SPA_IMPL_H | |
29 | ||
34dc7c2f BB |
30 | #include <sys/spa.h> |
31 | #include <sys/vdev.h> | |
32 | #include <sys/metaslab.h> | |
33 | #include <sys/dmu.h> | |
34 | #include <sys/dsl_pool.h> | |
35 | #include <sys/uberblock_impl.h> | |
36 | #include <sys/zfs_context.h> | |
37 | #include <sys/avl.h> | |
38 | #include <sys/refcount.h> | |
39 | #include <sys/bplist.h> | |
428870ff | 40 | #include <sys/bpobj.h> |
34dc7c2f BB |
41 | |
42 | #ifdef __cplusplus | |
43 | extern "C" { | |
44 | #endif | |
45 | ||
46 | typedef struct spa_error_entry { | |
47 | zbookmark_t se_bookmark; | |
48 | char *se_name; | |
49 | avl_node_t se_avl; | |
50 | } spa_error_entry_t; | |
51 | ||
52 | typedef struct spa_history_phys { | |
53 | uint64_t sh_pool_create_len; /* ending offset of zpool create */ | |
54 | uint64_t sh_phys_max_off; /* physical EOF */ | |
55 | uint64_t sh_bof; /* logical BOF */ | |
56 | uint64_t sh_eof; /* logical EOF */ | |
57 | uint64_t sh_records_lost; /* num of records overwritten */ | |
58 | } spa_history_phys_t; | |
59 | ||
60 | struct spa_aux_vdev { | |
61 | uint64_t sav_object; /* MOS object for device list */ | |
62 | nvlist_t *sav_config; /* cached device config */ | |
63 | vdev_t **sav_vdevs; /* devices */ | |
64 | int sav_count; /* number devices */ | |
65 | boolean_t sav_sync; /* sync the device list */ | |
66 | nvlist_t **sav_pending; /* pending device additions */ | |
67 | uint_t sav_npending; /* # pending devices */ | |
68 | }; | |
69 | ||
70 | typedef struct spa_config_lock { | |
71 | kmutex_t scl_lock; | |
72 | kthread_t *scl_writer; | |
b128c09f | 73 | int scl_write_wanted; |
34dc7c2f BB |
74 | kcondvar_t scl_cv; |
75 | refcount_t scl_count; | |
76 | } spa_config_lock_t; | |
77 | ||
b128c09f BB |
78 | typedef struct spa_config_dirent { |
79 | list_node_t scd_link; | |
80 | char *scd_path; | |
81 | } spa_config_dirent_t; | |
82 | ||
7ef5e54e | 83 | typedef enum zio_taskq_type { |
b128c09f | 84 | ZIO_TASKQ_ISSUE = 0, |
428870ff | 85 | ZIO_TASKQ_ISSUE_HIGH, |
b128c09f | 86 | ZIO_TASKQ_INTERRUPT, |
428870ff | 87 | ZIO_TASKQ_INTERRUPT_HIGH, |
b128c09f | 88 | ZIO_TASKQ_TYPES |
7ef5e54e | 89 | } zio_taskq_type_t; |
b128c09f | 90 | |
428870ff | 91 | /* |
7ef5e54e | 92 | * State machine for the zpool-poolname process. The states transitions |
428870ff BB |
93 | * are done as follows: |
94 | * | |
95 | * From To Routine | |
96 | * PROC_NONE -> PROC_CREATED spa_activate() | |
97 | * PROC_CREATED -> PROC_ACTIVE spa_thread() | |
98 | * PROC_ACTIVE -> PROC_DEACTIVATE spa_deactivate() | |
99 | * PROC_DEACTIVATE -> PROC_GONE spa_thread() | |
100 | * PROC_GONE -> PROC_NONE spa_deactivate() | |
101 | */ | |
102 | typedef enum spa_proc_state { | |
103 | SPA_PROC_NONE, /* spa_proc = &p0, no process created */ | |
104 | SPA_PROC_CREATED, /* spa_activate() has proc, is waiting */ | |
105 | SPA_PROC_ACTIVE, /* taskqs created, spa_proc set */ | |
106 | SPA_PROC_DEACTIVATE, /* spa_deactivate() requests process exit */ | |
107 | SPA_PROC_GONE /* spa_thread() is exiting, spa_proc = &p0 */ | |
108 | } spa_proc_state_t; | |
109 | ||
7ef5e54e AL |
110 | typedef struct spa_taskqs { |
111 | uint_t stqs_count; | |
112 | taskq_t **stqs_taskq; | |
113 | } spa_taskqs_t; | |
114 | ||
34dc7c2f BB |
115 | struct spa { |
116 | /* | |
117 | * Fields protected by spa_namespace_lock. | |
118 | */ | |
b128c09f | 119 | char spa_name[MAXNAMELEN]; /* pool name */ |
d96eb2b1 | 120 | char *spa_comment; /* comment */ |
34dc7c2f BB |
121 | avl_node_t spa_avl; /* node in spa_namespace_avl */ |
122 | nvlist_t *spa_config; /* last synced config */ | |
123 | nvlist_t *spa_config_syncing; /* currently syncing config */ | |
428870ff | 124 | nvlist_t *spa_config_splitting; /* config for splitting */ |
572e2857 | 125 | nvlist_t *spa_load_info; /* info and errors from load */ |
34dc7c2f | 126 | uint64_t spa_config_txg; /* txg of last config change */ |
34dc7c2f | 127 | int spa_sync_pass; /* iterate-to-convergence */ |
b128c09f | 128 | pool_state_t spa_state; /* pool state */ |
34dc7c2f | 129 | int spa_inject_ref; /* injection references */ |
34dc7c2f BB |
130 | uint8_t spa_sync_on; /* sync threads are running */ |
131 | spa_load_state_t spa_load_state; /* current load operation */ | |
572e2857 | 132 | uint64_t spa_import_flags; /* import specific flags */ |
7ef5e54e | 133 | spa_taskqs_t spa_zio_taskq[ZIO_TYPES][ZIO_TASKQ_TYPES]; |
34dc7c2f | 134 | dsl_pool_t *spa_dsl_pool; |
9ae529ec | 135 | boolean_t spa_is_initializing; /* true while opening pool */ |
34dc7c2f BB |
136 | metaslab_class_t *spa_normal_class; /* normal data class */ |
137 | metaslab_class_t *spa_log_class; /* intent log data class */ | |
138 | uint64_t spa_first_txg; /* first txg after spa_open() */ | |
139 | uint64_t spa_final_txg; /* txg of export/destroy */ | |
140 | uint64_t spa_freeze_txg; /* freeze pool at this txg */ | |
428870ff BB |
141 | uint64_t spa_load_max_txg; /* best initial ub_txg */ |
142 | uint64_t spa_claim_max_txg; /* highest claimed birth txg */ | |
572e2857 | 143 | timespec_t spa_loaded_ts; /* 1st successful open time */ |
34dc7c2f BB |
144 | objset_t *spa_meta_objset; /* copy of dp->dp_meta_objset */ |
145 | txg_list_t spa_vdev_txg_list; /* per-txg dirty vdev list */ | |
146 | vdev_t *spa_root_vdev; /* top-level vdev container */ | |
3541dc6d GA |
147 | uint64_t spa_config_guid; /* config pool guid */ |
148 | uint64_t spa_load_guid; /* spa_load initialized guid */ | |
3bc7e0fb | 149 | uint64_t spa_last_synced_guid; /* last synced guid */ |
b128c09f BB |
150 | list_t spa_config_dirty_list; /* vdevs with dirty config */ |
151 | list_t spa_state_dirty_list; /* vdevs with dirty state */ | |
34dc7c2f BB |
152 | spa_aux_vdev_t spa_spares; /* hot spares */ |
153 | spa_aux_vdev_t spa_l2cache; /* L2ARC cache devices */ | |
9ae529ec | 154 | nvlist_t *spa_label_features; /* Features for reading MOS */ |
34dc7c2f | 155 | uint64_t spa_config_object; /* MOS object for pool config */ |
428870ff | 156 | uint64_t spa_config_generation; /* config generation number */ |
34dc7c2f | 157 | uint64_t spa_syncing_txg; /* txg currently syncing */ |
428870ff BB |
158 | bpobj_t spa_deferred_bpobj; /* deferred-free bplist */ |
159 | bplist_t spa_free_bplist[TXG_SIZE]; /* bplist of stuff to free */ | |
34dc7c2f BB |
160 | uberblock_t spa_ubsync; /* last synced uberblock */ |
161 | uberblock_t spa_uberblock; /* current uberblock */ | |
428870ff | 162 | boolean_t spa_extreme_rewind; /* rewind past deferred frees */ |
572e2857 | 163 | uint64_t spa_last_io; /* lbolt of last non-scan I/O */ |
34dc7c2f | 164 | kmutex_t spa_scrub_lock; /* resilver/scrub lock */ |
34dc7c2f | 165 | uint64_t spa_scrub_inflight; /* in-flight scrub I/Os */ |
34dc7c2f | 166 | kcondvar_t spa_scrub_io_cv; /* scrub I/O completion */ |
34dc7c2f BB |
167 | uint8_t spa_scrub_active; /* active or suspended? */ |
168 | uint8_t spa_scrub_type; /* type of scrub we're doing */ | |
169 | uint8_t spa_scrub_finished; /* indicator to rotate logs */ | |
b128c09f BB |
170 | uint8_t spa_scrub_started; /* started since last boot */ |
171 | uint8_t spa_scrub_reopen; /* scrub doing vdev_reopen */ | |
428870ff BB |
172 | uint64_t spa_scan_pass_start; /* start time per pass/reboot */ |
173 | uint64_t spa_scan_pass_exam; /* examined bytes per pass */ | |
34dc7c2f BB |
174 | kmutex_t spa_async_lock; /* protect async state */ |
175 | kthread_t *spa_async_thread; /* thread doing async task */ | |
176 | int spa_async_suspended; /* async tasks suspended */ | |
177 | kcondvar_t spa_async_cv; /* wait for thread_exit() */ | |
178 | uint16_t spa_async_tasks; /* async task mask */ | |
179 | char *spa_root; /* alternate root directory */ | |
34dc7c2f | 180 | uint64_t spa_ena; /* spa-wide ereport ENA */ |
428870ff BB |
181 | int spa_last_open_failed; /* error if last open failed */ |
182 | uint64_t spa_last_ubsync_txg; /* "best" uberblock txg */ | |
183 | uint64_t spa_last_ubsync_txg_ts; /* timestamp from that ub */ | |
184 | uint64_t spa_load_txg; /* ub txg that loaded */ | |
185 | uint64_t spa_load_txg_ts; /* timestamp from that ub */ | |
186 | uint64_t spa_load_meta_errors; /* verify metadata err count */ | |
187 | uint64_t spa_load_data_errors; /* verify data err count */ | |
188 | uint64_t spa_verify_min_txg; /* start txg of verify scrub */ | |
34dc7c2f BB |
189 | kmutex_t spa_errlog_lock; /* error log lock */ |
190 | uint64_t spa_errlog_last; /* last error log object */ | |
191 | uint64_t spa_errlog_scrub; /* scrub error log object */ | |
192 | kmutex_t spa_errlist_lock; /* error list/ereport lock */ | |
193 | avl_tree_t spa_errlist_last; /* last error list */ | |
194 | avl_tree_t spa_errlist_scrub; /* scrub error list */ | |
195 | uint64_t spa_deflate; /* should we deflate? */ | |
196 | uint64_t spa_history; /* history object */ | |
197 | kmutex_t spa_history_lock; /* history lock */ | |
198 | vdev_t *spa_pending_vdev; /* pending vdev additions */ | |
199 | kmutex_t spa_props_lock; /* property lock */ | |
200 | uint64_t spa_pool_props_object; /* object for properties */ | |
201 | uint64_t spa_bootfs; /* default boot filesystem */ | |
b128c09f BB |
202 | uint64_t spa_failmode; /* failure mode for the pool */ |
203 | uint64_t spa_delegation; /* delegation on/off */ | |
204 | list_t spa_config_list; /* previous cache file(s) */ | |
9babb374 | 205 | zio_t *spa_async_zio_root; /* root of all async I/O */ |
b128c09f BB |
206 | zio_t *spa_suspend_zio_root; /* root of all suspended I/O */ |
207 | kmutex_t spa_suspend_lock; /* protects suspend_zio_root */ | |
208 | kcondvar_t spa_suspend_cv; /* notification of resume */ | |
209 | uint8_t spa_suspended; /* pool is suspended */ | |
428870ff | 210 | uint8_t spa_claiming; /* pool is doing zil_claim() */ |
6d974228 | 211 | boolean_t spa_debug; /* debug enabled? */ |
b128c09f BB |
212 | boolean_t spa_is_root; /* pool is root */ |
213 | int spa_minref; /* num refs when first opened */ | |
fb5f0bc8 | 214 | int spa_mode; /* FREAD | FWRITE */ |
b128c09f | 215 | spa_log_state_t spa_log_state; /* log state */ |
9babb374 | 216 | uint64_t spa_autoexpand; /* lun expansion on/off */ |
428870ff BB |
217 | ddt_t *spa_ddt[ZIO_CHECKSUM_FUNCTIONS]; /* in-core DDTs */ |
218 | uint64_t spa_ddt_stat_object; /* DDT statistics */ | |
219 | uint64_t spa_dedup_ditto; /* dedup ditto threshold */ | |
220 | uint64_t spa_dedup_checksum; /* default dedup checksum */ | |
221 | uint64_t spa_dspace; /* dspace in normal class */ | |
222 | kmutex_t spa_vdev_top_lock; /* dueling offline/remove */ | |
223 | kmutex_t spa_proc_lock; /* protects spa_proc* */ | |
224 | kcondvar_t spa_proc_cv; /* spa_proc_state transitions */ | |
225 | spa_proc_state_t spa_proc_state; /* see definition */ | |
60101509 | 226 | proc_t *spa_proc; /* "zpool-poolname" process */ |
428870ff BB |
227 | uint64_t spa_did; /* if procp != p0, did of t1 */ |
228 | boolean_t spa_autoreplace; /* autoreplace set in open */ | |
229 | int spa_vdev_locks; /* locks grabbed */ | |
230 | uint64_t spa_creation_version; /* version at pool creation */ | |
9ae529ec CS |
231 | uint64_t spa_prev_software_version; /* See ub_software_version */ |
232 | uint64_t spa_feat_for_write_obj; /* required to write to pool */ | |
233 | uint64_t spa_feat_for_read_obj; /* required to read from pool */ | |
234 | uint64_t spa_feat_desc_obj; /* Feature descriptions */ | |
cc92e9d0 GW |
235 | taskqid_t spa_deadman_tqid; /* Task id */ |
236 | uint64_t spa_deadman_calls; /* number of deadman calls */ | |
237 | uint64_t spa_sync_starttime; /* starting time fo spa_sync */ | |
238 | uint64_t spa_deadman_synctime; /* deadman expiration timer */ | |
34dc7c2f BB |
239 | /* |
240 | * spa_refcnt & spa_config_lock must be the last elements | |
241 | * because refcount_t changes size based on compilation options. | |
242 | * In order for the MDB module to function correctly, the other | |
243 | * fields must remain in the same location. | |
244 | */ | |
b128c09f | 245 | spa_config_lock_t spa_config_lock[SCL_LOCKS]; /* config changes */ |
34dc7c2f BB |
246 | refcount_t spa_refcount; /* number of opens */ |
247 | }; | |
248 | ||
c28b2279 | 249 | extern char *spa_config_path; |
b128c09f | 250 | |
7ef5e54e AL |
251 | extern void spa_taskq_dispatch_ent(spa_t *spa, zio_type_t t, zio_taskq_type_t q, |
252 | task_func_t *func, void *arg, uint_t flags, taskq_ent_t *ent); | |
044baf00 BB |
253 | extern void spa_taskq_dispatch_sync(spa_t *, zio_type_t t, zio_taskq_type_t q, |
254 | task_func_t *func, void *arg, uint_t flags); | |
255 | ||
7ef5e54e | 256 | |
34dc7c2f BB |
257 | #ifdef __cplusplus |
258 | } | |
259 | #endif | |
260 | ||
261 | #endif /* _SYS_SPA_IMPL_H */ |