1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 2004, 2007 Lukas Ertl 5 * Copyright (c) 1997, 1998, 1999 6 * Nan Yang Computer Services Limited. All rights reserved. 7 * 8 * Parts copyright (c) 1997, 1998 Cybernet Corporation, NetMAX project. 9 * Parts written by Greg Lehey. 10 * 11 * This software is distributed under the so-called ``Berkeley 12 * License'': * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgement: 23 * This product includes software developed by Nan Yang Computer 24 * Services Limited. 25 * 4. Neither the name of the Company nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * This software is provided ``as is'', and any express or implied 30 * warranties, including, but not limited to, the implied warranties of 31 * merchantability and fitness for a particular purpose are disclaimed. 32 * In no event shall the company or contributors be liable for any * direct, indirect, incidental, special, exemplary, or consequential 33 * damages (including, but not limited to, procurement of substitute 34 * goods or services; loss of use, data, or profits; or business 35 * interruption) however caused and on any theory of liability, whether 36 * in contract, strict liability, or tort (including negligence or 37 * otherwise) arising in any way out of the use of this software, even if 38 * advised of the possibility of such damage. 39 * 40 * $FreeBSD$ 41 */ 42 43 #ifndef _GEOM_VINUM_VAR_H_ 44 #define _GEOM_VINUM_VAR_H_ 45 46 /* 47 * Slice header 48 * 49 * Vinum drives start with this structure: 50 * 51 *\ Sector 52 * |--------------------------------------| 53 * | PDP-11 memorial boot block | 0 54 * |--------------------------------------| 55 * | Disk label, maybe | 1 56 * |--------------------------------------| 57 * | Slice definition (vinum_hdr) | 8 58 * |--------------------------------------| 59 * | | 60 * | Configuration info, first copy | 9 61 * | | 62 * |--------------------------------------| 63 * | | 64 * | Configuration info, second copy | 9 + size of config 65 * | | 66 * |--------------------------------------| 67 */ 68 69 /* Sizes and offsets of our information. */ 70 #define GV_HDR_OFFSET 4096 /* Offset of vinum header. */ 71 #define GV_HDR_LEN 512 /* Size of vinum header. */ 72 #define GV_CFG_OFFSET 4608 /* Offset of first config copy. */ 73 #define GV_CFG_LEN 65536 /* Size of config copy. */ 74 75 /* This is where the actual data starts. */ 76 #define GV_DATA_START (GV_CFG_LEN * 2 + GV_CFG_OFFSET) 77 /* #define GV_DATA_START (GV_CFG_LEN * 2 + GV_HDR_LEN) */ 78 79 #define GV_MAXDRIVENAME 32 /* Maximum length of a device name. */ 80 #define GV_MAXSDNAME 64 /* Maximum length of a subdisk name. */ 81 #define GV_MAXPLEXNAME 64 /* Maximum length of a plex name. */ 82 #define GV_MAXVOLNAME 64 /* Maximum length of a volume name. */ 83 84 /* Command line flags. */ 85 #define GV_FLAG_R 0x01 86 #define GV_FLAG_S 0x02 87 #define GV_FLAG_V 0x04 88 #define GV_FLAG_VV 0x08 89 #define GV_FLAG_F 0x10 90 91 /* Object types. */ 92 #define GV_TYPE_VOL 1 93 #define GV_TYPE_PLEX 2 94 #define GV_TYPE_SD 3 95 #define GV_TYPE_DRIVE 4 96 97 /* State changing flags. */ 98 #define GV_SETSTATE_FORCE 0x1 99 #define GV_SETSTATE_CONFIG 0x2 100 101 /* Subdisk state bitmaps for plexes. */ 102 #define GV_SD_DOWNSTATE 0x01 /* Subdisk is down. */ 103 #define GV_SD_STALESTATE 0x02 /* Subdisk is stale. */ 104 #define GV_SD_INITSTATE 0x04 /* Subdisk is initializing. */ 105 #define GV_SD_UPSTATE 0x08 /* Subdisk is up. */ 106 107 /* Synchronization/initialization request sizes. */ 108 #define GV_MIN_SYNCSIZE 512 109 #define GV_MAX_SYNCSIZE maxphys 110 #define GV_DFLT_SYNCSIZE 65536 111 112 /* Flags for BIOs, as they are processed within vinum. */ 113 #define GV_BIO_GROW 0x01 114 #define GV_BIO_MALLOC 0x02 115 #define GV_BIO_ONHOLD 0x04 116 #define GV_BIO_SYNCREQ 0x08 117 #define GV_BIO_INIT 0x10 118 #define GV_BIO_REBUILD 0x20 119 #define GV_BIO_CHECK 0x40 120 #define GV_BIO_PARITY 0x80 121 #define GV_BIO_INTERNAL \ 122 (GV_BIO_SYNCREQ | GV_BIO_INIT | GV_BIO_REBUILD | GV_BIO_CHECK | GV_BIO_GROW) 123 124 /* Error codes to be used within gvinum. */ 125 #define GV_ERR_SETSTATE (-1) /* Error setting state. */ 126 #define GV_ERR_BADSIZE (-2) /* Object has wrong size. */ 127 #define GV_ERR_INVTYPE (-3) /* Invalid object type. */ 128 #define GV_ERR_CREATE (-4) /* Error creating gvinum object. */ 129 #define GV_ERR_ISBUSY (-5) /* Object is busy. */ 130 #define GV_ERR_ISATTACHED (-6) /* Object is attached to another. */ 131 #define GV_ERR_INVFLAG (-7) /* Invalid flag passed. */ 132 #define GV_ERR_INVSTATE (-8) /* Invalid state. */ 133 #define GV_ERR_NOTFOUND (-9) /* Object not found. */ 134 #define GV_ERR_NAMETAKEN (-10) /* Object name is taken. */ 135 #define GV_ERR_NOSPACE (-11) /* No space left on drive/subdisk. */ 136 #define GV_ERR_BADOFFSET (-12) /* Invalid offset specified. */ 137 #define GV_ERR_INVNAME (-13) /* Invalid object name. */ 138 #define GV_ERR_PLEXORG (-14) /* Invalid plex organization. */ 139 140 /* 141 * hostname is 256 bytes long, but we don't need to shlep multiple copies in 142 * vinum. We use the host name just to identify this system, and 32 bytes 143 * should be ample for that purpose. 144 */ 145 146 #define GV_HOSTNAME_LEN 32 147 struct gv_label { 148 char sysname[GV_HOSTNAME_LEN]; /* System name at creation time. */ 149 char name[GV_MAXDRIVENAME]; /* Our name of the drive. */ 150 struct timeval date_of_birth; /* The time it was created ... */ 151 struct timeval last_update; /* ... and the time of last update. */ 152 off_t drive_size; /* Total size incl. headers. */ 153 }; 154 155 /* The 'header' of each valid vinum drive. */ 156 struct gv_hdr { 157 uint64_t magic; 158 #define GV_OLD_MAGIC 0x494E2056494E4F00LL 159 #define GV_OLD_NOMAGIC 0x4E4F2056494E4F00LL 160 #define GV_MAGIC 0x56494E554D2D3100LL 161 #define GV_NOMAGIC 0x56494E554D2D2D00LL 162 163 uint64_t config_length; 164 struct gv_label label; 165 }; 166 167 /* A single freelist entry of a drive. */ 168 struct gv_freelist { 169 off_t size; /* Size of this free slot. */ 170 off_t offset; /* Offset on the drive. */ 171 LIST_ENTRY(gv_freelist) freelist; 172 }; 173 174 /* 175 * Since we share structures between userland and kernel, we need this helper 176 * struct instead of struct bio_queue_head and friends. Maybe I find a proper 177 * solution some day. 178 */ 179 struct gv_bioq { 180 struct bio *bp; 181 TAILQ_ENTRY(gv_bioq) queue; 182 }; 183 184 #define GV_EVENT_DRIVE_TASTED 1 185 #define GV_EVENT_DRIVE_LOST 2 186 #define GV_EVENT_THREAD_EXIT 3 187 #define GV_EVENT_CREATE_DRIVE 4 188 #define GV_EVENT_CREATE_VOLUME 5 189 #define GV_EVENT_CREATE_PLEX 6 190 #define GV_EVENT_CREATE_SD 7 191 #define GV_EVENT_SAVE_CONFIG 8 192 #define GV_EVENT_RM_VOLUME 9 193 #define GV_EVENT_RM_PLEX 10 194 #define GV_EVENT_RM_SD 11 195 #define GV_EVENT_RM_DRIVE 12 196 #define GV_EVENT_SET_SD_STATE 13 197 #define GV_EVENT_SET_DRIVE_STATE 14 198 #define GV_EVENT_SET_VOL_STATE 15 199 #define GV_EVENT_SET_PLEX_STATE 16 200 #define GV_EVENT_RESET_CONFIG 17 201 #define GV_EVENT_PARITY_REBUILD 18 202 #define GV_EVENT_PARITY_CHECK 19 203 #define GV_EVENT_START_PLEX 20 204 #define GV_EVENT_START_VOLUME 21 205 #define GV_EVENT_ATTACH_PLEX 22 206 #define GV_EVENT_ATTACH_SD 23 207 #define GV_EVENT_DETACH_PLEX 24 208 #define GV_EVENT_DETACH_SD 25 209 #define GV_EVENT_RENAME_VOL 26 210 #define GV_EVENT_RENAME_PLEX 27 211 #define GV_EVENT_RENAME_SD 28 212 #define GV_EVENT_RENAME_DRIVE 29 213 #define GV_EVENT_MOVE_SD 30 214 #define GV_EVENT_SETUP_OBJECTS 31 215 216 #ifdef _KERNEL 217 struct gv_event { 218 int type; 219 void *arg1; 220 void *arg2; 221 intmax_t arg3; 222 intmax_t arg4; 223 TAILQ_ENTRY(gv_event) events; 224 }; 225 226 /* This struct contains the main vinum config. */ 227 struct gv_softc { 228 /* Linked lists of all objects in our setup. */ 229 LIST_HEAD(,gv_drive) drives; /* All drives. */ 230 LIST_HEAD(,gv_plex) plexes; /* All plexes. */ 231 LIST_HEAD(,gv_sd) subdisks; /* All subdisks. */ 232 LIST_HEAD(,gv_volume) volumes; /* All volumes. */ 233 234 TAILQ_HEAD(,gv_event) equeue; /* Event queue. */ 235 struct mtx equeue_mtx; /* Event queue lock. */ 236 struct mtx bqueue_mtx; /* BIO queue lock. */ 237 struct mtx config_mtx; /* Configuration lock. */ 238 struct bio_queue_head *bqueue_down; /* BIO queue incoming 239 requests. */ 240 struct bio_queue_head *bqueue_up; /* BIO queue for completed 241 requests. */ 242 struct g_geom *geom; /* Pointer to our VINUM geom. */ 243 struct proc *worker; /* Worker process. */ 244 }; 245 #endif 246 247 /* softc for a drive. */ 248 struct gv_drive { 249 char name[GV_MAXDRIVENAME]; /* The name of this drive. */ 250 char device[GV_MAXDRIVENAME]; /* Associated device. */ 251 int state; /* The state of this drive. */ 252 #define GV_DRIVE_DOWN 0 253 #define GV_DRIVE_UP 1 254 255 off_t size; /* Size of this drive. */ 256 off_t avail; /* Available space. */ 257 int sdcount; /* Number of subdisks. */ 258 259 int flags; 260 #define GV_DRIVE_REFERENCED 0x01 /* The drive isn't really existing, 261 but was referenced by a subdisk 262 during taste. */ 263 #define GV_DRIVE_ORPHANED 0x02 /* The drive was orphaned. */ 264 265 struct gv_hdr *hdr; /* The drive header. */ 266 267 struct g_consumer *consumer; /* Consumer attached to this drive. */ 268 int active; /* Number of active requests. */ 269 270 int freelist_entries; /* Count of freelist entries. */ 271 LIST_HEAD(,gv_freelist) freelist; /* List of freelist entries. */ 272 LIST_HEAD(,gv_sd) subdisks; /* Subdisks on this drive. */ 273 LIST_ENTRY(gv_drive) drive; /* Entry in the vinum config. */ 274 275 struct gv_softc *vinumconf; /* Pointer to the vinum conf. */ 276 }; 277 278 /* softc for a subdisk. */ 279 struct gv_sd { 280 char name[GV_MAXSDNAME]; /* The name of this subdisk. */ 281 off_t size; /* The size of this subdisk. */ 282 off_t drive_offset; /* Offset in the underlying drive. */ 283 off_t plex_offset; /* Offset in the associated plex. */ 284 int state; /* The state of this subdisk. */ 285 #define GV_SD_DOWN 0 286 #define GV_SD_STALE 1 287 #define GV_SD_INITIALIZING 2 288 #define GV_SD_REVIVING 3 289 #define GV_SD_UP 4 290 291 off_t initialized; /* Count of initialized bytes. */ 292 293 int init_size; /* Initialization read/write size. */ 294 int init_error; /* Flag error on initialization. */ 295 296 int flags; 297 #define GV_SD_NEWBORN 0x01 /* Subdisk is created by user. */ 298 #define GV_SD_TASTED 0x02 /* Subdisk is created during taste. */ 299 #define GV_SD_CANGOUP 0x04 /* Subdisk can go up immediately. */ 300 #define GV_SD_GROW 0x08 /* Subdisk is added to striped plex. */ 301 302 char drive[GV_MAXDRIVENAME]; /* Name of underlying drive. */ 303 char plex[GV_MAXPLEXNAME]; /* Name of associated plex. */ 304 305 struct gv_drive *drive_sc; /* Pointer to underlying drive. */ 306 struct gv_plex *plex_sc; /* Pointer to associated plex. */ 307 308 LIST_ENTRY(gv_sd) from_drive; /* Subdisk list of underlying drive. */ 309 LIST_ENTRY(gv_sd) in_plex; /* Subdisk list of associated plex. */ 310 LIST_ENTRY(gv_sd) sd; /* Entry in the vinum config. */ 311 312 struct gv_softc *vinumconf; /* Pointer to the vinum config. */ 313 }; 314 315 /* softc for a plex. */ 316 struct gv_plex { 317 char name[GV_MAXPLEXNAME]; /* The name of the plex. */ 318 off_t size; /* The size of the plex. */ 319 int state; /* The plex state. */ 320 #define GV_PLEX_DOWN 0 321 #define GV_PLEX_INITIALIZING 1 322 #define GV_PLEX_DEGRADED 2 323 #define GV_PLEX_GROWABLE 3 324 #define GV_PLEX_UP 4 325 326 int org; /* The plex organisation. */ 327 #define GV_PLEX_DISORG 0 328 #define GV_PLEX_CONCAT 1 329 #define GV_PLEX_STRIPED 2 330 #define GV_PLEX_RAID5 4 331 332 int stripesize; /* The stripe size of the plex. */ 333 334 char volume[GV_MAXVOLNAME]; /* Name of associated volume. */ 335 struct gv_volume *vol_sc; /* Pointer to associated volume. */ 336 337 int sddetached; /* Number of detached subdisks. */ 338 int sdcount; /* Number of subdisks in this plex. */ 339 int sddown; /* Number of subdisks that are down. */ 340 int flags; 341 #define GV_PLEX_ADDED 0x01 /* Added to an existing volume. */ 342 #define GV_PLEX_SYNCING 0x02 /* Plex is syncing from another plex. */ 343 #define GV_PLEX_NEWBORN 0x20 /* The plex was just created. */ 344 #define GV_PLEX_REBUILDING 0x40 /* The plex is rebuilding. */ 345 #define GV_PLEX_GROWING 0x80 /* The plex is growing. */ 346 347 off_t synced; /* Count of synced bytes. */ 348 349 TAILQ_HEAD(,gv_raid5_packet) packets; /* RAID5 sub-requests. */ 350 351 LIST_HEAD(,gv_sd) subdisks; /* List of attached subdisks. */ 352 LIST_ENTRY(gv_plex) in_volume; /* Plex list of associated volume. */ 353 LIST_ENTRY(gv_plex) plex; /* Entry in the vinum config. */ 354 355 #ifdef _KERNEL 356 struct bio_queue_head *bqueue; /* BIO queue. */ 357 struct bio_queue_head *wqueue; /* Waiting BIO queue. */ 358 struct bio_queue_head *rqueue; /* Rebuild waiting BIO queue. */ 359 #else 360 char *bpad, *wpad, *rpad; /* Padding for userland. */ 361 #endif 362 363 struct gv_softc *vinumconf; /* Pointer to the vinum config. */ 364 }; 365 366 /* softc for a volume. */ 367 struct gv_volume { 368 char name[GV_MAXVOLNAME]; /* The name of the volume. */ 369 off_t size; /* The size of the volume. */ 370 int plexcount; /* Number of plexes. */ 371 int state; /* The state of the volume. */ 372 #define GV_VOL_DOWN 0 373 #define GV_VOL_UP 1 374 375 int flags; 376 #define GV_VOL_NEWBORN 0x08 /* The volume was just created. */ 377 378 LIST_HEAD(,gv_plex) plexes; /* List of attached plexes. */ 379 LIST_ENTRY(gv_volume) volume; /* Entry in vinum config. */ 380 381 struct g_provider *provider; /* Provider of this volume. */ 382 383 #ifdef _KERNEL 384 struct bio_queue_head *wqueue; /* BIO delayed request queue. */ 385 #else 386 char *wpad; /* Padding for userland. */ 387 #endif 388 389 struct gv_plex *last_read_plex; 390 struct gv_softc *vinumconf; /* Pointer to the vinum config. */ 391 }; 392 393 #endif /* !_GEOM_VINUM_VAR_H */ 394