| 1 | /* $NetBSD: rf_disks.c,v 1.87 2014/10/18 08:33:28 snj Exp $ */ |
| 2 | /*- |
| 3 | * Copyright (c) 1999 The NetBSD Foundation, Inc. |
| 4 | * All rights reserved. |
| 5 | * |
| 6 | * This code is derived from software contributed to The NetBSD Foundation |
| 7 | * by Greg Oster |
| 8 | * |
| 9 | * Redistribution and use in source and binary forms, with or without |
| 10 | * modification, are permitted provided that the following conditions |
| 11 | * are met: |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in the |
| 16 | * documentation and/or other materials provided with the distribution. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 19 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 20 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 21 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 22 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 23 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 24 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 25 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 26 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 27 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 28 | * POSSIBILITY OF SUCH DAMAGE. |
| 29 | */ |
| 30 | |
| 31 | /* |
| 32 | * Copyright (c) 1995 Carnegie-Mellon University. |
| 33 | * All rights reserved. |
| 34 | * |
| 35 | * Author: Mark Holland |
| 36 | * |
| 37 | * Permission to use, copy, modify and distribute this software and |
| 38 | * its documentation is hereby granted, provided that both the copyright |
| 39 | * notice and this permission notice appear in all copies of the |
| 40 | * software, derivative works or modified versions, and any portions |
| 41 | * thereof, and that both notices appear in supporting documentation. |
| 42 | * |
| 43 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" |
| 44 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND |
| 45 | * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. |
| 46 | * |
| 47 | * Carnegie Mellon requests users of this software to return to |
| 48 | * |
| 49 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU |
| 50 | * School of Computer Science |
| 51 | * Carnegie Mellon University |
| 52 | * Pittsburgh PA 15213-3890 |
| 53 | * |
| 54 | * any improvements or extensions that they make and grant Carnegie the |
| 55 | * rights to redistribute these changes. |
| 56 | */ |
| 57 | |
| 58 | /*************************************************************** |
| 59 | * rf_disks.c -- code to perform operations on the actual disks |
| 60 | ***************************************************************/ |
| 61 | |
| 62 | #include <sys/cdefs.h> |
| 63 | __KERNEL_RCSID(0, "$NetBSD: rf_disks.c,v 1.87 2014/10/18 08:33:28 snj Exp $" ); |
| 64 | |
| 65 | #include <dev/raidframe/raidframevar.h> |
| 66 | |
| 67 | #include "rf_raid.h" |
| 68 | #include "rf_alloclist.h" |
| 69 | #include "rf_utils.h" |
| 70 | #include "rf_general.h" |
| 71 | #include "rf_options.h" |
| 72 | #include "rf_kintf.h" |
| 73 | #include "rf_netbsd.h" |
| 74 | |
| 75 | #include <sys/param.h> |
| 76 | #include <sys/systm.h> |
| 77 | #include <sys/proc.h> |
| 78 | #include <sys/ioctl.h> |
| 79 | #include <sys/fcntl.h> |
| 80 | #include <sys/vnode.h> |
| 81 | #include <sys/namei.h> /* for pathbuf */ |
| 82 | #include <sys/kauth.h> |
| 83 | #include <miscfs/specfs/specdev.h> /* for v_rdev */ |
| 84 | |
| 85 | static int rf_AllocDiskStructures(RF_Raid_t *, RF_Config_t *); |
| 86 | static void rf_print_label_status( RF_Raid_t *, int, char *, |
| 87 | RF_ComponentLabel_t *); |
| 88 | static int rf_check_label_vitals( RF_Raid_t *, int, int, char *, |
| 89 | RF_ComponentLabel_t *, int, int ); |
| 90 | |
| 91 | #define DPRINTF6(a,b,c,d,e,f) if (rf_diskDebug) printf(a,b,c,d,e,f) |
| 92 | #define DPRINTF7(a,b,c,d,e,f,g) if (rf_diskDebug) printf(a,b,c,d,e,f,g) |
| 93 | |
| 94 | /************************************************************************** |
| 95 | * |
| 96 | * initialize the disks comprising the array |
| 97 | * |
| 98 | * We want the spare disks to have regular row,col numbers so that we can |
| 99 | * easily substitue a spare for a failed disk. But, the driver code assumes |
| 100 | * throughout that the array contains numRow by numCol _non-spare_ disks, so |
| 101 | * it's not clear how to fit in the spares. This is an unfortunate holdover |
| 102 | * from raidSim. The quick and dirty fix is to make row zero bigger than the |
| 103 | * rest, and put all the spares in it. This probably needs to get changed |
| 104 | * eventually. |
| 105 | * |
| 106 | **************************************************************************/ |
| 107 | |
| 108 | int |
| 109 | rf_ConfigureDisks(RF_ShutdownList_t **listp, RF_Raid_t *raidPtr, |
| 110 | RF_Config_t *cfgPtr) |
| 111 | { |
| 112 | RF_RaidDisk_t *disks; |
| 113 | RF_SectorCount_t min_numblks = (RF_SectorCount_t) 0x7FFFFFFFFFFFLL; |
| 114 | RF_RowCol_t c; |
| 115 | int bs, ret; |
| 116 | unsigned i, count, foundone = 0, numFailuresThisRow; |
| 117 | int force; |
| 118 | |
| 119 | force = cfgPtr->force; |
| 120 | |
| 121 | ret = rf_AllocDiskStructures(raidPtr, cfgPtr); |
| 122 | if (ret) |
| 123 | goto fail; |
| 124 | |
| 125 | disks = raidPtr->Disks; |
| 126 | |
| 127 | numFailuresThisRow = 0; |
| 128 | for (c = 0; c < raidPtr->numCol; c++) { |
| 129 | ret = rf_ConfigureDisk(raidPtr, |
| 130 | &cfgPtr->devnames[0][c][0], |
| 131 | &disks[c], c); |
| 132 | |
| 133 | if (ret) |
| 134 | goto fail; |
| 135 | |
| 136 | if (disks[c].status == rf_ds_optimal) { |
| 137 | ret = raidfetch_component_label(raidPtr, c); |
| 138 | if (ret) |
| 139 | goto fail; |
| 140 | |
| 141 | /* mark it as failed if the label looks bogus... */ |
| 142 | if (!rf_reasonable_label(&raidPtr->raid_cinfo[c].ci_label,0) && !force) { |
| 143 | disks[c].status = rf_ds_failed; |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | if (disks[c].status != rf_ds_optimal) { |
| 148 | numFailuresThisRow++; |
| 149 | } else { |
| 150 | if (disks[c].numBlocks < min_numblks) |
| 151 | min_numblks = disks[c].numBlocks; |
| 152 | DPRINTF6("Disk at col %d: dev %s numBlocks %" PRIu64 " blockSize %d (%ld MB)\n" , |
| 153 | c, disks[c].devname, |
| 154 | disks[c].numBlocks, |
| 155 | disks[c].blockSize, |
| 156 | (long int) disks[c].numBlocks * |
| 157 | disks[c].blockSize / 1024 / 1024); |
| 158 | } |
| 159 | } |
| 160 | /* XXX fix for n-fault tolerant */ |
| 161 | /* XXX this should probably check to see how many failures |
| 162 | we can handle for this configuration! */ |
| 163 | if (numFailuresThisRow > 0) |
| 164 | raidPtr->status = rf_rs_degraded; |
| 165 | |
| 166 | /* all disks must be the same size & have the same block size, bs must |
| 167 | * be a power of 2 */ |
| 168 | bs = 0; |
| 169 | foundone = 0; |
| 170 | for (c = 0; c < raidPtr->numCol; c++) { |
| 171 | if (disks[c].status == rf_ds_optimal) { |
| 172 | bs = disks[c].blockSize; |
| 173 | foundone = 1; |
| 174 | break; |
| 175 | } |
| 176 | } |
| 177 | if (!foundone) { |
| 178 | RF_ERRORMSG("RAIDFRAME: Did not find any live disks in the array.\n" ); |
| 179 | ret = EINVAL; |
| 180 | goto fail; |
| 181 | } |
| 182 | for (count = 0, i = 1; i; i <<= 1) |
| 183 | if (bs & i) |
| 184 | count++; |
| 185 | if (count != 1) { |
| 186 | RF_ERRORMSG1("Error: block size on disks (%d) must be a power of 2\n" , bs); |
| 187 | ret = EINVAL; |
| 188 | goto fail; |
| 189 | } |
| 190 | |
| 191 | if (rf_CheckLabels( raidPtr, cfgPtr )) { |
| 192 | printf("raid%d: There were fatal errors\n" , raidPtr->raidid); |
| 193 | if (force != 0) { |
| 194 | printf("raid%d: Fatal errors being ignored.\n" , |
| 195 | raidPtr->raidid); |
| 196 | } else { |
| 197 | ret = EINVAL; |
| 198 | goto fail; |
| 199 | } |
| 200 | } |
| 201 | |
| 202 | for (c = 0; c < raidPtr->numCol; c++) { |
| 203 | if (disks[c].status == rf_ds_optimal) { |
| 204 | if (disks[c].blockSize != bs) { |
| 205 | RF_ERRORMSG1("Error: block size of disk at c %d different from disk at c 0\n" , c); |
| 206 | ret = EINVAL; |
| 207 | goto fail; |
| 208 | } |
| 209 | if (disks[c].numBlocks != min_numblks) { |
| 210 | RF_ERRORMSG2("WARNING: truncating disk at c %d to %d blocks\n" , |
| 211 | c, (int) min_numblks); |
| 212 | disks[c].numBlocks = min_numblks; |
| 213 | } |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | raidPtr->sectorsPerDisk = min_numblks; |
| 218 | raidPtr->logBytesPerSector = ffs(bs) - 1; |
| 219 | raidPtr->bytesPerSector = bs; |
| 220 | raidPtr->sectorMask = bs - 1; |
| 221 | return (0); |
| 222 | |
| 223 | fail: |
| 224 | |
| 225 | rf_UnconfigureVnodes( raidPtr ); |
| 226 | |
| 227 | return (ret); |
| 228 | } |
| 229 | |
| 230 | |
| 231 | /**************************************************************************** |
| 232 | * set up the data structures describing the spare disks in the array |
| 233 | * recall from the above comment that the spare disk descriptors are stored |
| 234 | * in row zero, which is specially expanded to hold them. |
| 235 | ****************************************************************************/ |
| 236 | int |
| 237 | rf_ConfigureSpareDisks(RF_ShutdownList_t **listp, RF_Raid_t *raidPtr, |
| 238 | RF_Config_t *cfgPtr) |
| 239 | { |
| 240 | int i, ret; |
| 241 | unsigned int bs; |
| 242 | RF_RaidDisk_t *disks; |
| 243 | int num_spares_done; |
| 244 | |
| 245 | num_spares_done = 0; |
| 246 | |
| 247 | /* The space for the spares should have already been allocated by |
| 248 | * ConfigureDisks() */ |
| 249 | |
| 250 | disks = &raidPtr->Disks[raidPtr->numCol]; |
| 251 | for (i = 0; i < raidPtr->numSpare; i++) { |
| 252 | ret = rf_ConfigureDisk(raidPtr, &cfgPtr->spare_names[i][0], |
| 253 | &disks[i], raidPtr->numCol + i); |
| 254 | if (ret) |
| 255 | goto fail; |
| 256 | if (disks[i].status != rf_ds_optimal) { |
| 257 | RF_ERRORMSG1("Warning: spare disk %s failed TUR\n" , |
| 258 | &cfgPtr->spare_names[i][0]); |
| 259 | } else { |
| 260 | disks[i].status = rf_ds_spare; /* change status to |
| 261 | * spare */ |
| 262 | DPRINTF6("Spare Disk %d: dev %s numBlocks %" PRIu64 " blockSize %d (%ld MB)\n" , i, |
| 263 | disks[i].devname, |
| 264 | disks[i].numBlocks, disks[i].blockSize, |
| 265 | (long int) disks[i].numBlocks * |
| 266 | disks[i].blockSize / 1024 / 1024); |
| 267 | } |
| 268 | num_spares_done++; |
| 269 | } |
| 270 | |
| 271 | /* check sizes and block sizes on spare disks */ |
| 272 | bs = 1 << raidPtr->logBytesPerSector; |
| 273 | for (i = 0; i < raidPtr->numSpare; i++) { |
| 274 | if (disks[i].blockSize != bs) { |
| 275 | RF_ERRORMSG3("Block size of %d on spare disk %s is not the same as on other disks (%d)\n" , disks[i].blockSize, disks[i].devname, bs); |
| 276 | ret = EINVAL; |
| 277 | goto fail; |
| 278 | } |
| 279 | if (disks[i].numBlocks < raidPtr->sectorsPerDisk) { |
| 280 | RF_ERRORMSG3("Spare disk %s (%d blocks) is too small to serve as a spare (need %" PRIu64 " blocks)\n" , |
| 281 | disks[i].devname, disks[i].blockSize, |
| 282 | raidPtr->sectorsPerDisk); |
| 283 | ret = EINVAL; |
| 284 | goto fail; |
| 285 | } else |
| 286 | if (disks[i].numBlocks > raidPtr->sectorsPerDisk) { |
| 287 | RF_ERRORMSG3("Warning: truncating spare disk %s to %" PRIu64 " blocks (from %" PRIu64 ")\n" , |
| 288 | disks[i].devname, |
| 289 | raidPtr->sectorsPerDisk, |
| 290 | disks[i].numBlocks); |
| 291 | |
| 292 | disks[i].numBlocks = raidPtr->sectorsPerDisk; |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | return (0); |
| 297 | |
| 298 | fail: |
| 299 | |
| 300 | /* Release the hold on the main components. We've failed to allocate |
| 301 | * a spare, and since we're failing, we need to free things.. |
| 302 | |
| 303 | XXX failing to allocate a spare is *not* that big of a deal... |
| 304 | We *can* survive without it, if need be, esp. if we get hot |
| 305 | adding working. |
| 306 | |
| 307 | If we don't fail out here, then we need a way to remove this spare... |
| 308 | that should be easier to do here than if we are "live"... |
| 309 | |
| 310 | */ |
| 311 | |
| 312 | rf_UnconfigureVnodes( raidPtr ); |
| 313 | |
| 314 | return (ret); |
| 315 | } |
| 316 | |
| 317 | static int |
| 318 | rf_AllocDiskStructures(RF_Raid_t *raidPtr, RF_Config_t *cfgPtr) |
| 319 | { |
| 320 | int ret; |
| 321 | |
| 322 | /* We allocate RF_MAXSPARE on the first row so that we |
| 323 | have room to do hot-swapping of spares */ |
| 324 | RF_MallocAndAdd(raidPtr->Disks, (raidPtr->numCol + RF_MAXSPARE) * |
| 325 | sizeof(RF_RaidDisk_t), (RF_RaidDisk_t *), |
| 326 | raidPtr->cleanupList); |
| 327 | if (raidPtr->Disks == NULL) { |
| 328 | ret = ENOMEM; |
| 329 | goto fail; |
| 330 | } |
| 331 | |
| 332 | /* get space for device specific stuff.. */ |
| 333 | RF_MallocAndAdd(raidPtr->raid_cinfo, |
| 334 | (raidPtr->numCol + RF_MAXSPARE) * |
| 335 | sizeof(struct raidcinfo), (struct raidcinfo *), |
| 336 | raidPtr->cleanupList); |
| 337 | |
| 338 | if (raidPtr->raid_cinfo == NULL) { |
| 339 | ret = ENOMEM; |
| 340 | goto fail; |
| 341 | } |
| 342 | |
| 343 | return(0); |
| 344 | fail: |
| 345 | rf_UnconfigureVnodes( raidPtr ); |
| 346 | |
| 347 | return(ret); |
| 348 | } |
| 349 | |
| 350 | |
| 351 | /* configure a single disk during auto-configuration at boot */ |
| 352 | int |
| 353 | rf_AutoConfigureDisks(RF_Raid_t *raidPtr, RF_Config_t *cfgPtr, |
| 354 | RF_AutoConfig_t *auto_config) |
| 355 | { |
| 356 | RF_RaidDisk_t *disks; |
| 357 | RF_RaidDisk_t *diskPtr; |
| 358 | RF_RowCol_t c; |
| 359 | RF_SectorCount_t min_numblks = (RF_SectorCount_t) 0x7FFFFFFFFFFFLL; |
| 360 | int bs, ret; |
| 361 | int numFailuresThisRow; |
| 362 | RF_AutoConfig_t *ac; |
| 363 | int parity_good; |
| 364 | int mod_counter; |
| 365 | int mod_counter_found; |
| 366 | |
| 367 | #if DEBUG |
| 368 | printf("Starting autoconfiguration of RAID set...\n" ); |
| 369 | #endif |
| 370 | |
| 371 | ret = rf_AllocDiskStructures(raidPtr, cfgPtr); |
| 372 | if (ret) |
| 373 | goto fail; |
| 374 | |
| 375 | disks = raidPtr->Disks; |
| 376 | |
| 377 | /* assume the parity will be fine.. */ |
| 378 | parity_good = RF_RAID_CLEAN; |
| 379 | |
| 380 | /* Check for mod_counters that are too low */ |
| 381 | mod_counter_found = 0; |
| 382 | mod_counter = 0; |
| 383 | ac = auto_config; |
| 384 | while(ac!=NULL) { |
| 385 | if (mod_counter_found==0) { |
| 386 | mod_counter = ac->clabel->mod_counter; |
| 387 | mod_counter_found = 1; |
| 388 | } else { |
| 389 | if (ac->clabel->mod_counter > mod_counter) { |
| 390 | mod_counter = ac->clabel->mod_counter; |
| 391 | } |
| 392 | } |
| 393 | ac->flag = 0; /* clear the general purpose flag */ |
| 394 | ac = ac->next; |
| 395 | } |
| 396 | |
| 397 | bs = 0; |
| 398 | |
| 399 | numFailuresThisRow = 0; |
| 400 | for (c = 0; c < raidPtr->numCol; c++) { |
| 401 | diskPtr = &disks[c]; |
| 402 | |
| 403 | /* find this row/col in the autoconfig */ |
| 404 | #if DEBUG |
| 405 | printf("Looking for %d in autoconfig\n" ,c); |
| 406 | #endif |
| 407 | ac = auto_config; |
| 408 | while(ac!=NULL) { |
| 409 | if (ac->clabel==NULL) { |
| 410 | /* big-time bad news. */ |
| 411 | goto fail; |
| 412 | } |
| 413 | if ((ac->clabel->column == c) && |
| 414 | (ac->clabel->mod_counter == mod_counter)) { |
| 415 | /* it's this one... */ |
| 416 | /* flag it as 'used', so we don't |
| 417 | free it later. */ |
| 418 | ac->flag = 1; |
| 419 | #if DEBUG |
| 420 | printf("Found: %s at %d\n" , |
| 421 | ac->devname,c); |
| 422 | #endif |
| 423 | |
| 424 | break; |
| 425 | } |
| 426 | ac=ac->next; |
| 427 | } |
| 428 | |
| 429 | if (ac==NULL) { |
| 430 | /* we didn't find an exact match with a |
| 431 | correct mod_counter above... can we find |
| 432 | one with an incorrect mod_counter to use |
| 433 | instead? (this one, if we find it, will be |
| 434 | marked as failed once the set configures) |
| 435 | */ |
| 436 | |
| 437 | ac = auto_config; |
| 438 | while(ac!=NULL) { |
| 439 | if (ac->clabel==NULL) { |
| 440 | /* big-time bad news. */ |
| 441 | goto fail; |
| 442 | } |
| 443 | if (ac->clabel->column == c) { |
| 444 | /* it's this one... |
| 445 | flag it as 'used', so we |
| 446 | don't free it later. */ |
| 447 | ac->flag = 1; |
| 448 | #if DEBUG |
| 449 | printf("Found(low mod_counter): %s at %d\n" , |
| 450 | ac->devname,c); |
| 451 | #endif |
| 452 | |
| 453 | break; |
| 454 | } |
| 455 | ac=ac->next; |
| 456 | } |
| 457 | } |
| 458 | |
| 459 | |
| 460 | |
| 461 | if (ac!=NULL) { |
| 462 | /* Found it. Configure it.. */ |
| 463 | diskPtr->blockSize = ac->clabel->blockSize; |
| 464 | diskPtr->numBlocks = |
| 465 | rf_component_label_numblocks(ac->clabel); |
| 466 | /* Note: rf_protectedSectors is already |
| 467 | factored into numBlocks here */ |
| 468 | raidPtr->raid_cinfo[c].ci_vp = ac->vp; |
| 469 | raidPtr->raid_cinfo[c].ci_dev = ac->dev; |
| 470 | |
| 471 | memcpy(raidget_component_label(raidPtr, c), |
| 472 | ac->clabel, sizeof(*ac->clabel)); |
| 473 | snprintf(diskPtr->devname, sizeof(diskPtr->devname), |
| 474 | "/dev/%s" , ac->devname); |
| 475 | |
| 476 | /* note the fact that this component was |
| 477 | autoconfigured. You'll need this info |
| 478 | later. Trust me :) */ |
| 479 | diskPtr->auto_configured = 1; |
| 480 | diskPtr->dev = ac->dev; |
| 481 | |
| 482 | /* |
| 483 | * we allow the user to specify that |
| 484 | * only a fraction of the disks should |
| 485 | * be used this is just for debug: it |
| 486 | * speeds up the parity scan |
| 487 | */ |
| 488 | |
| 489 | diskPtr->numBlocks = diskPtr->numBlocks * |
| 490 | rf_sizePercentage / 100; |
| 491 | |
| 492 | /* XXX these will get set multiple times, |
| 493 | but since we're autoconfiguring, they'd |
| 494 | better be always the same each time! |
| 495 | If not, this is the least of your worries */ |
| 496 | |
| 497 | bs = diskPtr->blockSize; |
| 498 | min_numblks = diskPtr->numBlocks; |
| 499 | |
| 500 | /* this gets done multiple times, but that's |
| 501 | fine -- the serial number will be the same |
| 502 | for all components, guaranteed */ |
| 503 | raidPtr->serial_number = ac->clabel->serial_number; |
| 504 | /* check the last time the label was modified */ |
| 505 | |
| 506 | if (ac->clabel->mod_counter != mod_counter) { |
| 507 | /* Even though we've filled in all of |
| 508 | the above, we don't trust this |
| 509 | component since its modification |
| 510 | counter is not in sync with the |
| 511 | rest, and we really consider it to |
| 512 | be failed. */ |
| 513 | disks[c].status = rf_ds_failed; |
| 514 | numFailuresThisRow++; |
| 515 | } else { |
| 516 | if (ac->clabel->clean != RF_RAID_CLEAN) { |
| 517 | parity_good = RF_RAID_DIRTY; |
| 518 | } |
| 519 | } |
| 520 | } else { |
| 521 | /* Didn't find it at all!! Component must |
| 522 | really be dead */ |
| 523 | disks[c].status = rf_ds_failed; |
| 524 | snprintf(disks[c].devname, sizeof(disks[c].devname), |
| 525 | "component%d" , c); |
| 526 | numFailuresThisRow++; |
| 527 | } |
| 528 | } |
| 529 | /* XXX fix for n-fault tolerant */ |
| 530 | /* XXX this should probably check to see how many failures |
| 531 | we can handle for this configuration! */ |
| 532 | if (numFailuresThisRow > 0) { |
| 533 | raidPtr->status = rf_rs_degraded; |
| 534 | raidPtr->numFailures = numFailuresThisRow; |
| 535 | } |
| 536 | |
| 537 | /* close the device for the ones that didn't get used */ |
| 538 | |
| 539 | ac = auto_config; |
| 540 | while(ac!=NULL) { |
| 541 | if (ac->flag == 0) { |
| 542 | vn_lock(ac->vp, LK_EXCLUSIVE | LK_RETRY); |
| 543 | VOP_CLOSE(ac->vp, FREAD | FWRITE, NOCRED); |
| 544 | vput(ac->vp); |
| 545 | ac->vp = NULL; |
| 546 | #if DEBUG |
| 547 | printf("Released %s from auto-config set.\n" , |
| 548 | ac->devname); |
| 549 | #endif |
| 550 | } |
| 551 | ac = ac->next; |
| 552 | } |
| 553 | |
| 554 | raidPtr->mod_counter = mod_counter; |
| 555 | |
| 556 | /* note the state of the parity, if any */ |
| 557 | raidPtr->parity_good = parity_good; |
| 558 | raidPtr->sectorsPerDisk = min_numblks; |
| 559 | raidPtr->logBytesPerSector = ffs(bs) - 1; |
| 560 | raidPtr->bytesPerSector = bs; |
| 561 | raidPtr->sectorMask = bs - 1; |
| 562 | return (0); |
| 563 | |
| 564 | fail: |
| 565 | |
| 566 | rf_UnconfigureVnodes( raidPtr ); |
| 567 | |
| 568 | return (ret); |
| 569 | |
| 570 | } |
| 571 | |
| 572 | /* configure a single disk in the array */ |
| 573 | int |
| 574 | rf_ConfigureDisk(RF_Raid_t *raidPtr, char *bf, RF_RaidDisk_t *diskPtr, |
| 575 | RF_RowCol_t col) |
| 576 | { |
| 577 | char *p; |
| 578 | struct pathbuf *pb; |
| 579 | struct vnode *vp; |
| 580 | int error; |
| 581 | |
| 582 | p = rf_find_non_white(bf); |
| 583 | if (p[strlen(p) - 1] == '\n') { |
| 584 | /* strip off the newline */ |
| 585 | p[strlen(p) - 1] = '\0'; |
| 586 | } |
| 587 | (void) strcpy(diskPtr->devname, p); |
| 588 | |
| 589 | /* Let's start by claiming the component is fine and well... */ |
| 590 | diskPtr->status = rf_ds_optimal; |
| 591 | |
| 592 | raidPtr->raid_cinfo[col].ci_vp = NULL; |
| 593 | raidPtr->raid_cinfo[col].ci_dev = 0; |
| 594 | |
| 595 | if (!strcmp("absent" , diskPtr->devname)) { |
| 596 | printf("Ignoring missing component at column %d\n" , col); |
| 597 | snprintf(diskPtr->devname, sizeof(diskPtr->devname), |
| 598 | "component%d" , col); |
| 599 | diskPtr->status = rf_ds_failed; |
| 600 | return (0); |
| 601 | } |
| 602 | |
| 603 | pb = pathbuf_create(diskPtr->devname); |
| 604 | if (pb == NULL) { |
| 605 | printf("pathbuf_create for device: %s failed!\n" , |
| 606 | diskPtr->devname); |
| 607 | return ENOMEM; |
| 608 | } |
| 609 | error = dk_lookup(pb, curlwp, &vp); |
| 610 | pathbuf_destroy(pb); |
| 611 | if (error) { |
| 612 | printf("dk_lookup on device: %s failed!\n" , diskPtr->devname); |
| 613 | if (error == ENXIO) { |
| 614 | /* the component isn't there... must be dead :-( */ |
| 615 | diskPtr->status = rf_ds_failed; |
| 616 | return 0; |
| 617 | } else { |
| 618 | return (error); |
| 619 | } |
| 620 | } |
| 621 | |
| 622 | if ((error = rf_getdisksize(vp, diskPtr)) != 0) |
| 623 | return (error); |
| 624 | |
| 625 | /* |
| 626 | * If this raidPtr's bytesPerSector is zero, fill it in with this |
| 627 | * components blockSize. This will give us something to work with |
| 628 | * initially, and if it is wrong, we'll get errors later. |
| 629 | */ |
| 630 | if (raidPtr->bytesPerSector == 0) |
| 631 | raidPtr->bytesPerSector = diskPtr->blockSize; |
| 632 | |
| 633 | if (diskPtr->status == rf_ds_optimal) { |
| 634 | raidPtr->raid_cinfo[col].ci_vp = vp; |
| 635 | raidPtr->raid_cinfo[col].ci_dev = vp->v_rdev; |
| 636 | |
| 637 | /* This component was not automatically configured */ |
| 638 | diskPtr->auto_configured = 0; |
| 639 | diskPtr->dev = vp->v_rdev; |
| 640 | |
| 641 | /* we allow the user to specify that only a fraction of the |
| 642 | * disks should be used this is just for debug: it speeds up |
| 643 | * the parity scan */ |
| 644 | diskPtr->numBlocks = diskPtr->numBlocks * |
| 645 | rf_sizePercentage / 100; |
| 646 | } |
| 647 | return (0); |
| 648 | } |
| 649 | |
| 650 | static void |
| 651 | rf_print_label_status(RF_Raid_t *raidPtr, int column, char *dev_name, |
| 652 | RF_ComponentLabel_t *ci_label) |
| 653 | { |
| 654 | |
| 655 | printf("raid%d: Component %s being configured at col: %d\n" , |
| 656 | raidPtr->raidid, dev_name, column ); |
| 657 | printf(" Column: %d Num Columns: %d\n" , |
| 658 | ci_label->column, |
| 659 | ci_label->num_columns); |
| 660 | printf(" Version: %d Serial Number: %d Mod Counter: %d\n" , |
| 661 | ci_label->version, ci_label->serial_number, |
| 662 | ci_label->mod_counter); |
| 663 | printf(" Clean: %s Status: %d\n" , |
| 664 | ci_label->clean ? "Yes" : "No" , ci_label->status ); |
| 665 | } |
| 666 | |
| 667 | static int rf_check_label_vitals(RF_Raid_t *raidPtr, int row, int column, |
| 668 | char *dev_name, RF_ComponentLabel_t *ci_label, |
| 669 | int serial_number, int mod_counter) |
| 670 | { |
| 671 | int fatal_error = 0; |
| 672 | |
| 673 | if (serial_number != ci_label->serial_number) { |
| 674 | printf("%s has a different serial number: %d %d\n" , |
| 675 | dev_name, serial_number, ci_label->serial_number); |
| 676 | fatal_error = 1; |
| 677 | } |
| 678 | if (mod_counter != ci_label->mod_counter) { |
| 679 | printf("%s has a different modification count: %d %d\n" , |
| 680 | dev_name, mod_counter, ci_label->mod_counter); |
| 681 | } |
| 682 | |
| 683 | if (row != ci_label->row) { |
| 684 | printf("Row out of alignment for: %s\n" , dev_name); |
| 685 | fatal_error = 1; |
| 686 | } |
| 687 | if (column != ci_label->column) { |
| 688 | printf("Column out of alignment for: %s\n" , dev_name); |
| 689 | fatal_error = 1; |
| 690 | } |
| 691 | if (raidPtr->numCol != ci_label->num_columns) { |
| 692 | printf("Number of columns do not match for: %s\n" , dev_name); |
| 693 | fatal_error = 1; |
| 694 | } |
| 695 | if (ci_label->clean == 0) { |
| 696 | /* it's not clean, but that's not fatal */ |
| 697 | printf("%s is not clean!\n" , dev_name); |
| 698 | } |
| 699 | return(fatal_error); |
| 700 | } |
| 701 | |
| 702 | |
| 703 | /* |
| 704 | |
| 705 | rf_CheckLabels() - check all the component labels for consistency. |
| 706 | Return an error if there is anything major amiss. |
| 707 | |
| 708 | */ |
| 709 | |
| 710 | int |
| 711 | rf_CheckLabels(RF_Raid_t *raidPtr, RF_Config_t *cfgPtr) |
| 712 | { |
| 713 | int c; |
| 714 | char *dev_name; |
| 715 | RF_ComponentLabel_t *ci_label; |
| 716 | int serial_number = 0; |
| 717 | int mod_number = 0; |
| 718 | int fatal_error = 0; |
| 719 | int mod_values[4]; |
| 720 | int mod_count[4]; |
| 721 | int ser_values[4]; |
| 722 | int ser_count[4]; |
| 723 | int num_ser; |
| 724 | int num_mod; |
| 725 | int i; |
| 726 | int found; |
| 727 | int hosed_column; |
| 728 | int too_fatal; |
| 729 | int parity_good; |
| 730 | int force; |
| 731 | |
| 732 | hosed_column = -1; |
| 733 | too_fatal = 0; |
| 734 | force = cfgPtr->force; |
| 735 | |
| 736 | /* |
| 737 | We're going to try to be a little intelligent here. If one |
| 738 | component's label is bogus, and we can identify that it's the |
| 739 | *only* one that's gone, we'll mark it as "failed" and allow |
| 740 | the configuration to proceed. This will be the *only* case |
| 741 | that we'll proceed if there would be (otherwise) fatal errors. |
| 742 | |
| 743 | Basically we simply keep a count of how many components had |
| 744 | what serial number. If all but one agree, we simply mark |
| 745 | the disagreeing component as being failed, and allow |
| 746 | things to come up "normally". |
| 747 | |
| 748 | We do this first for serial numbers, and then for "mod_counter". |
| 749 | |
| 750 | */ |
| 751 | |
| 752 | num_ser = 0; |
| 753 | num_mod = 0; |
| 754 | |
| 755 | ser_values[0] = ser_values[1] = ser_values[2] = ser_values[3] = 0; |
| 756 | ser_count[0] = ser_count[1] = ser_count[2] = ser_count[3] = 0; |
| 757 | mod_values[0] = mod_values[1] = mod_values[2] = mod_values[3] = 0; |
| 758 | mod_count[0] = mod_count[1] = mod_count[2] = mod_count[3] = 0; |
| 759 | |
| 760 | for (c = 0; c < raidPtr->numCol; c++) { |
| 761 | if (raidPtr->Disks[c].status != rf_ds_optimal) |
| 762 | continue; |
| 763 | ci_label = raidget_component_label(raidPtr, c); |
| 764 | found=0; |
| 765 | for(i=0;i<num_ser;i++) { |
| 766 | if (ser_values[i] == ci_label->serial_number) { |
| 767 | ser_count[i]++; |
| 768 | found=1; |
| 769 | break; |
| 770 | } |
| 771 | } |
| 772 | if (!found) { |
| 773 | ser_values[num_ser] = ci_label->serial_number; |
| 774 | ser_count[num_ser] = 1; |
| 775 | num_ser++; |
| 776 | if (num_ser>2) { |
| 777 | fatal_error = 1; |
| 778 | break; |
| 779 | } |
| 780 | } |
| 781 | found=0; |
| 782 | for(i=0;i<num_mod;i++) { |
| 783 | if (mod_values[i] == ci_label->mod_counter) { |
| 784 | mod_count[i]++; |
| 785 | found=1; |
| 786 | break; |
| 787 | } |
| 788 | } |
| 789 | if (!found) { |
| 790 | mod_values[num_mod] = ci_label->mod_counter; |
| 791 | mod_count[num_mod] = 1; |
| 792 | num_mod++; |
| 793 | if (num_mod>2) { |
| 794 | fatal_error = 1; |
| 795 | break; |
| 796 | } |
| 797 | } |
| 798 | } |
| 799 | #if DEBUG |
| 800 | printf("raid%d: Summary of serial numbers:\n" , raidPtr->raidid); |
| 801 | for(i=0;i<num_ser;i++) { |
| 802 | printf("%d %d\n" , ser_values[i], ser_count[i]); |
| 803 | } |
| 804 | printf("raid%d: Summary of mod counters:\n" , raidPtr->raidid); |
| 805 | for(i=0;i<num_mod;i++) { |
| 806 | printf("%d %d\n" , mod_values[i], mod_count[i]); |
| 807 | } |
| 808 | #endif |
| 809 | serial_number = ser_values[0]; |
| 810 | if (num_ser == 2) { |
| 811 | if ((ser_count[0] == 1) || (ser_count[1] == 1)) { |
| 812 | /* Locate the maverick component */ |
| 813 | if (ser_count[1] > ser_count[0]) { |
| 814 | serial_number = ser_values[1]; |
| 815 | } |
| 816 | |
| 817 | for (c = 0; c < raidPtr->numCol; c++) { |
| 818 | if (raidPtr->Disks[c].status != rf_ds_optimal) |
| 819 | continue; |
| 820 | ci_label = raidget_component_label(raidPtr, c); |
| 821 | if (serial_number != ci_label->serial_number) { |
| 822 | hosed_column = c; |
| 823 | break; |
| 824 | } |
| 825 | } |
| 826 | printf("Hosed component: %s\n" , |
| 827 | &cfgPtr->devnames[0][hosed_column][0]); |
| 828 | if (!force) { |
| 829 | /* we'll fail this component, as if there are |
| 830 | other major errors, we arn't forcing things |
| 831 | and we'll abort the config anyways */ |
| 832 | raidPtr->Disks[hosed_column].status |
| 833 | = rf_ds_failed; |
| 834 | raidPtr->numFailures++; |
| 835 | raidPtr->status = rf_rs_degraded; |
| 836 | } |
| 837 | } else { |
| 838 | too_fatal = 1; |
| 839 | } |
| 840 | if (cfgPtr->parityConfig == '0') { |
| 841 | /* We've identified two different serial numbers. |
| 842 | RAID 0 can't cope with that, so we'll punt */ |
| 843 | too_fatal = 1; |
| 844 | } |
| 845 | |
| 846 | } |
| 847 | |
| 848 | /* record the serial number for later. If we bail later, setting |
| 849 | this doesn't matter, otherwise we've got the best guess at the |
| 850 | correct serial number */ |
| 851 | raidPtr->serial_number = serial_number; |
| 852 | |
| 853 | mod_number = mod_values[0]; |
| 854 | if (num_mod == 2) { |
| 855 | if ((mod_count[0] == 1) || (mod_count[1] == 1)) { |
| 856 | /* Locate the maverick component */ |
| 857 | if (mod_count[1] > mod_count[0]) { |
| 858 | mod_number = mod_values[1]; |
| 859 | } else if (mod_count[1] < mod_count[0]) { |
| 860 | mod_number = mod_values[0]; |
| 861 | } else { |
| 862 | /* counts of different modification values |
| 863 | are the same. Assume greater value is |
| 864 | the correct one, all other things |
| 865 | considered */ |
| 866 | if (mod_values[0] > mod_values[1]) { |
| 867 | mod_number = mod_values[0]; |
| 868 | } else { |
| 869 | mod_number = mod_values[1]; |
| 870 | } |
| 871 | |
| 872 | } |
| 873 | |
| 874 | for (c = 0; c < raidPtr->numCol; c++) { |
| 875 | if (raidPtr->Disks[c].status != rf_ds_optimal) |
| 876 | continue; |
| 877 | |
| 878 | ci_label = raidget_component_label(raidPtr, c); |
| 879 | if (mod_number != ci_label->mod_counter) { |
| 880 | if (hosed_column == c) { |
| 881 | /* same one. Can |
| 882 | deal with it. */ |
| 883 | } else { |
| 884 | hosed_column = c; |
| 885 | if (num_ser != 1) { |
| 886 | too_fatal = 1; |
| 887 | break; |
| 888 | } |
| 889 | } |
| 890 | } |
| 891 | } |
| 892 | printf("Hosed component: %s\n" , |
| 893 | &cfgPtr->devnames[0][hosed_column][0]); |
| 894 | if (!force) { |
| 895 | /* we'll fail this component, as if there are |
| 896 | other major errors, we arn't forcing things |
| 897 | and we'll abort the config anyways */ |
| 898 | if (raidPtr->Disks[hosed_column].status != rf_ds_failed) { |
| 899 | raidPtr->Disks[hosed_column].status |
| 900 | = rf_ds_failed; |
| 901 | raidPtr->numFailures++; |
| 902 | raidPtr->status = rf_rs_degraded; |
| 903 | } |
| 904 | } |
| 905 | } else { |
| 906 | too_fatal = 1; |
| 907 | } |
| 908 | if (cfgPtr->parityConfig == '0') { |
| 909 | /* We've identified two different mod counters. |
| 910 | RAID 0 can't cope with that, so we'll punt */ |
| 911 | too_fatal = 1; |
| 912 | } |
| 913 | } |
| 914 | |
| 915 | raidPtr->mod_counter = mod_number; |
| 916 | |
| 917 | if (too_fatal) { |
| 918 | /* we've had both a serial number mismatch, and a mod_counter |
| 919 | mismatch -- and they involved two different components!! |
| 920 | Bail -- make things fail so that the user must force |
| 921 | the issue... */ |
| 922 | hosed_column = -1; |
| 923 | fatal_error = 1; |
| 924 | } |
| 925 | |
| 926 | if (num_ser > 2) { |
| 927 | printf("raid%d: Too many different serial numbers!\n" , |
| 928 | raidPtr->raidid); |
| 929 | fatal_error = 1; |
| 930 | } |
| 931 | |
| 932 | if (num_mod > 2) { |
| 933 | printf("raid%d: Too many different mod counters!\n" , |
| 934 | raidPtr->raidid); |
| 935 | fatal_error = 1; |
| 936 | } |
| 937 | |
| 938 | for (c = 0; c < raidPtr->numCol; c++) { |
| 939 | if (raidPtr->Disks[c].status != rf_ds_optimal) { |
| 940 | hosed_column = c; |
| 941 | break; |
| 942 | } |
| 943 | } |
| 944 | |
| 945 | /* we start by assuming the parity will be good, and flee from |
| 946 | that notion at the slightest sign of trouble */ |
| 947 | |
| 948 | parity_good = RF_RAID_CLEAN; |
| 949 | |
| 950 | for (c = 0; c < raidPtr->numCol; c++) { |
| 951 | dev_name = &cfgPtr->devnames[0][c][0]; |
| 952 | ci_label = raidget_component_label(raidPtr, c); |
| 953 | |
| 954 | if (c == hosed_column) { |
| 955 | printf("raid%d: Ignoring %s\n" , |
| 956 | raidPtr->raidid, dev_name); |
| 957 | } else { |
| 958 | rf_print_label_status( raidPtr, c, dev_name, ci_label); |
| 959 | if (rf_check_label_vitals( raidPtr, 0, c, |
| 960 | dev_name, ci_label, |
| 961 | serial_number, |
| 962 | mod_number )) { |
| 963 | fatal_error = 1; |
| 964 | } |
| 965 | if (ci_label->clean != RF_RAID_CLEAN) { |
| 966 | parity_good = RF_RAID_DIRTY; |
| 967 | } |
| 968 | } |
| 969 | } |
| 970 | |
| 971 | if (fatal_error) { |
| 972 | parity_good = RF_RAID_DIRTY; |
| 973 | } |
| 974 | |
| 975 | /* we note the state of the parity */ |
| 976 | raidPtr->parity_good = parity_good; |
| 977 | |
| 978 | return(fatal_error); |
| 979 | } |
| 980 | |
| 981 | int |
| 982 | rf_add_hot_spare(RF_Raid_t *raidPtr, RF_SingleComponent_t *sparePtr) |
| 983 | { |
| 984 | RF_RaidDisk_t *disks; |
| 985 | RF_DiskQueue_t *spareQueues; |
| 986 | int ret; |
| 987 | unsigned int bs; |
| 988 | int spare_number; |
| 989 | |
| 990 | ret=0; |
| 991 | |
| 992 | if (raidPtr->numSpare >= RF_MAXSPARE) { |
| 993 | RF_ERRORMSG1("Too many spares: %d\n" , raidPtr->numSpare); |
| 994 | return(EINVAL); |
| 995 | } |
| 996 | |
| 997 | rf_lock_mutex2(raidPtr->mutex); |
| 998 | while (raidPtr->adding_hot_spare == 1) { |
| 999 | rf_wait_cond2(raidPtr->adding_hot_spare_cv, raidPtr->mutex); |
| 1000 | } |
| 1001 | raidPtr->adding_hot_spare = 1; |
| 1002 | rf_unlock_mutex2(raidPtr->mutex); |
| 1003 | |
| 1004 | /* the beginning of the spares... */ |
| 1005 | disks = &raidPtr->Disks[raidPtr->numCol]; |
| 1006 | |
| 1007 | spare_number = raidPtr->numSpare; |
| 1008 | |
| 1009 | ret = rf_ConfigureDisk(raidPtr, sparePtr->component_name, |
| 1010 | &disks[spare_number], |
| 1011 | raidPtr->numCol + spare_number); |
| 1012 | |
| 1013 | if (ret) |
| 1014 | goto fail; |
| 1015 | if (disks[spare_number].status != rf_ds_optimal) { |
| 1016 | RF_ERRORMSG1("Warning: spare disk %s failed TUR\n" , |
| 1017 | sparePtr->component_name); |
| 1018 | rf_close_component(raidPtr, raidPtr->raid_cinfo[raidPtr->numCol+spare_number].ci_vp, 0); |
| 1019 | ret=EINVAL; |
| 1020 | goto fail; |
| 1021 | } else { |
| 1022 | disks[spare_number].status = rf_ds_spare; |
| 1023 | DPRINTF6("Spare Disk %d: dev %s numBlocks %" PRIu64 " blockSize %d (%ld MB)\n" , |
| 1024 | spare_number, |
| 1025 | disks[spare_number].devname, |
| 1026 | disks[spare_number].numBlocks, |
| 1027 | disks[spare_number].blockSize, |
| 1028 | (long int) disks[spare_number].numBlocks * |
| 1029 | disks[spare_number].blockSize / 1024 / 1024); |
| 1030 | } |
| 1031 | |
| 1032 | |
| 1033 | /* check sizes and block sizes on the spare disk */ |
| 1034 | bs = 1 << raidPtr->logBytesPerSector; |
| 1035 | if (disks[spare_number].blockSize != bs) { |
| 1036 | RF_ERRORMSG3("Block size of %d on spare disk %s is not the same as on other disks (%d)\n" , disks[spare_number].blockSize, disks[spare_number].devname, bs); |
| 1037 | rf_close_component(raidPtr, raidPtr->raid_cinfo[raidPtr->numCol+spare_number].ci_vp, 0); |
| 1038 | ret = EINVAL; |
| 1039 | goto fail; |
| 1040 | } |
| 1041 | if (disks[spare_number].numBlocks < raidPtr->sectorsPerDisk) { |
| 1042 | RF_ERRORMSG3("Spare disk %s (%d blocks) is too small to serve as a spare (need %" PRIu64 " blocks)\n" , |
| 1043 | disks[spare_number].devname, |
| 1044 | disks[spare_number].blockSize, |
| 1045 | raidPtr->sectorsPerDisk); |
| 1046 | rf_close_component(raidPtr, raidPtr->raid_cinfo[raidPtr->numCol+spare_number].ci_vp, 0); |
| 1047 | ret = EINVAL; |
| 1048 | goto fail; |
| 1049 | } else { |
| 1050 | if (disks[spare_number].numBlocks > |
| 1051 | raidPtr->sectorsPerDisk) { |
| 1052 | RF_ERRORMSG3("Warning: truncating spare disk %s to %" PRIu64 " blocks (from %" PRIu64 ")\n" , |
| 1053 | disks[spare_number].devname, |
| 1054 | raidPtr->sectorsPerDisk, |
| 1055 | disks[spare_number].numBlocks); |
| 1056 | |
| 1057 | disks[spare_number].numBlocks = raidPtr->sectorsPerDisk; |
| 1058 | } |
| 1059 | } |
| 1060 | |
| 1061 | spareQueues = &raidPtr->Queues[raidPtr->numCol]; |
| 1062 | ret = rf_ConfigureDiskQueue( raidPtr, &spareQueues[spare_number], |
| 1063 | raidPtr->numCol + spare_number, |
| 1064 | raidPtr->qType, |
| 1065 | raidPtr->sectorsPerDisk, |
| 1066 | raidPtr->Disks[raidPtr->numCol + |
| 1067 | spare_number].dev, |
| 1068 | raidPtr->maxOutstanding, |
| 1069 | &raidPtr->shutdownList, |
| 1070 | raidPtr->cleanupList); |
| 1071 | |
| 1072 | rf_lock_mutex2(raidPtr->mutex); |
| 1073 | raidPtr->numSpare++; |
| 1074 | rf_unlock_mutex2(raidPtr->mutex); |
| 1075 | |
| 1076 | fail: |
| 1077 | rf_lock_mutex2(raidPtr->mutex); |
| 1078 | raidPtr->adding_hot_spare = 0; |
| 1079 | rf_signal_cond2(raidPtr->adding_hot_spare_cv); |
| 1080 | rf_unlock_mutex2(raidPtr->mutex); |
| 1081 | |
| 1082 | return(ret); |
| 1083 | } |
| 1084 | |
| 1085 | int |
| 1086 | rf_remove_hot_spare(RF_Raid_t *raidPtr, RF_SingleComponent_t *sparePtr) |
| 1087 | { |
| 1088 | #if 0 |
| 1089 | int spare_number; |
| 1090 | #endif |
| 1091 | |
| 1092 | if (raidPtr->numSpare==0) { |
| 1093 | printf("No spares to remove!\n" ); |
| 1094 | return(EINVAL); |
| 1095 | } |
| 1096 | |
| 1097 | return(EINVAL); /* XXX not implemented yet */ |
| 1098 | #if 0 |
| 1099 | spare_number = sparePtr->column; |
| 1100 | |
| 1101 | if (spare_number < 0 || spare_number > raidPtr->numSpare) { |
| 1102 | return(EINVAL); |
| 1103 | } |
| 1104 | |
| 1105 | /* verify that this spare isn't in use... */ |
| 1106 | |
| 1107 | |
| 1108 | |
| 1109 | |
| 1110 | /* it's gone.. */ |
| 1111 | |
| 1112 | raidPtr->numSpare--; |
| 1113 | |
| 1114 | return(0); |
| 1115 | #endif |
| 1116 | } |
| 1117 | |
| 1118 | |
| 1119 | int |
| 1120 | rf_delete_component(RF_Raid_t *raidPtr, RF_SingleComponent_t *component) |
| 1121 | { |
| 1122 | #if 0 |
| 1123 | RF_RaidDisk_t *disks; |
| 1124 | #endif |
| 1125 | |
| 1126 | if ((component->column < 0) || |
| 1127 | (component->column >= raidPtr->numCol)) { |
| 1128 | return(EINVAL); |
| 1129 | } |
| 1130 | |
| 1131 | #if 0 |
| 1132 | disks = &raidPtr->Disks[component->column]; |
| 1133 | #endif |
| 1134 | |
| 1135 | /* 1. This component must be marked as 'failed' */ |
| 1136 | |
| 1137 | return(EINVAL); /* Not implemented yet. */ |
| 1138 | } |
| 1139 | |
| 1140 | int |
| 1141 | rf_incorporate_hot_spare(RF_Raid_t *raidPtr, |
| 1142 | RF_SingleComponent_t *component) |
| 1143 | { |
| 1144 | |
| 1145 | /* Issues here include how to 'move' this in if there is IO |
| 1146 | taking place (e.g. component queues and such) */ |
| 1147 | |
| 1148 | return(EINVAL); /* Not implemented yet. */ |
| 1149 | } |
| 1150 | |