rf_netbsdkintf.c revision 1.229
1 /* $NetBSD: rf_netbsdkintf.c,v 1.229 2007/07/18 19:04:58 ad Exp $ */ 2 /*- 3 * Copyright (c) 1996, 1997, 1998 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; Jason R. Thorpe. 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 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the NetBSD 20 * Foundation, Inc. and its contributors. 21 * 4. Neither the name of The NetBSD Foundation nor the names of its 22 * contributors may be used to endorse or promote products derived 23 * from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * Copyright (c) 1990, 1993 40 * The Regents of the University of California. All rights reserved. 41 * 42 * This code is derived from software contributed to Berkeley by 43 * the Systems Programming Group of the University of Utah Computer 44 * Science Department. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * from: Utah $Hdr: cd.c 1.6 90/11/28$ 71 * 72 * @(#)cd.c 8.2 (Berkeley) 11/16/93 73 */ 74 75 /* 76 * Copyright (c) 1988 University of Utah. 77 * 78 * This code is derived from software contributed to Berkeley by 79 * the Systems Programming Group of the University of Utah Computer 80 * Science Department. 81 * 82 * Redistribution and use in source and binary forms, with or without 83 * modification, are permitted provided that the following conditions 84 * are met: 85 * 1. Redistributions of source code must retain the above copyright 86 * notice, this list of conditions and the following disclaimer. 87 * 2. Redistributions in binary form must reproduce the above copyright 88 * notice, this list of conditions and the following disclaimer in the 89 * documentation and/or other materials provided with the distribution. 90 * 3. All advertising materials mentioning features or use of this software 91 * must display the following acknowledgement: 92 * This product includes software developed by the University of 93 * California, Berkeley and its contributors. 94 * 4. Neither the name of the University nor the names of its contributors 95 * may be used to endorse or promote products derived from this software 96 * without specific prior written permission. 97 * 98 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 99 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 100 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 101 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 102 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 103 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 104 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 105 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 106 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 107 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 108 * SUCH DAMAGE. 109 * 110 * from: Utah $Hdr: cd.c 1.6 90/11/28$ 111 * 112 * @(#)cd.c 8.2 (Berkeley) 11/16/93 113 */ 114 115 /* 116 * Copyright (c) 1995 Carnegie-Mellon University. 117 * All rights reserved. 118 * 119 * Authors: Mark Holland, Jim Zelenka 120 * 121 * Permission to use, copy, modify and distribute this software and 122 * its documentation is hereby granted, provided that both the copyright 123 * notice and this permission notice appear in all copies of the 124 * software, derivative works or modified versions, and any portions 125 * thereof, and that both notices appear in supporting documentation. 126 * 127 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 128 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 129 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 130 * 131 * Carnegie Mellon requests users of this software to return to 132 * 133 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 134 * School of Computer Science 135 * Carnegie Mellon University 136 * Pittsburgh PA 15213-3890 137 * 138 * any improvements or extensions that they make and grant Carnegie the 139 * rights to redistribute these changes. 140 */ 141 142 /*********************************************************** 143 * 144 * rf_kintf.c -- the kernel interface routines for RAIDframe 145 * 146 ***********************************************************/ 147 148 #include <sys/cdefs.h> 149 __KERNEL_RCSID(0, "$NetBSD: rf_netbsdkintf.c,v 1.229 2007/07/18 19:04:58 ad Exp $"); 150 151 #include <sys/param.h> 152 #include <sys/errno.h> 153 #include <sys/pool.h> 154 #include <sys/proc.h> 155 #include <sys/queue.h> 156 #include <sys/disk.h> 157 #include <sys/device.h> 158 #include <sys/stat.h> 159 #include <sys/ioctl.h> 160 #include <sys/fcntl.h> 161 #include <sys/systm.h> 162 #include <sys/namei.h> 163 #include <sys/vnode.h> 164 #include <sys/disklabel.h> 165 #include <sys/conf.h> 166 #include <sys/lock.h> 167 #include <sys/buf.h> 168 #include <sys/bufq.h> 169 #include <sys/user.h> 170 #include <sys/reboot.h> 171 #include <sys/kauth.h> 172 173 #include <dev/raidframe/raidframevar.h> 174 #include <dev/raidframe/raidframeio.h> 175 #include "raid.h" 176 #include "opt_raid_autoconfig.h" 177 #include "rf_raid.h" 178 #include "rf_copyback.h" 179 #include "rf_dag.h" 180 #include "rf_dagflags.h" 181 #include "rf_desc.h" 182 #include "rf_diskqueue.h" 183 #include "rf_etimer.h" 184 #include "rf_general.h" 185 #include "rf_kintf.h" 186 #include "rf_options.h" 187 #include "rf_driver.h" 188 #include "rf_parityscan.h" 189 #include "rf_threadstuff.h" 190 191 #ifdef DEBUG 192 int rf_kdebug_level = 0; 193 #define db1_printf(a) if (rf_kdebug_level > 0) printf a 194 #else /* DEBUG */ 195 #define db1_printf(a) { } 196 #endif /* DEBUG */ 197 198 static RF_Raid_t **raidPtrs; /* global raid device descriptors */ 199 200 RF_DECLARE_STATIC_MUTEX(rf_sparet_wait_mutex) 201 202 static RF_SparetWait_t *rf_sparet_wait_queue; /* requests to install a 203 * spare table */ 204 static RF_SparetWait_t *rf_sparet_resp_queue; /* responses from 205 * installation process */ 206 207 MALLOC_DEFINE(M_RAIDFRAME, "RAIDframe", "RAIDframe structures"); 208 209 /* prototypes */ 210 static void KernelWakeupFunc(struct buf *); 211 static void InitBP(struct buf *, struct vnode *, unsigned, 212 dev_t, RF_SectorNum_t, RF_SectorCount_t, void *, void (*) (struct buf *), 213 void *, int, struct proc *); 214 static void raidinit(RF_Raid_t *); 215 216 void raidattach(int); 217 static int raid_match(struct device *, struct cfdata *, void *); 218 static void raid_attach(struct device *, struct device *, void *); 219 static int raid_detach(struct device *, int); 220 221 dev_type_open(raidopen); 222 dev_type_close(raidclose); 223 dev_type_read(raidread); 224 dev_type_write(raidwrite); 225 dev_type_ioctl(raidioctl); 226 dev_type_strategy(raidstrategy); 227 dev_type_dump(raiddump); 228 dev_type_size(raidsize); 229 230 const struct bdevsw raid_bdevsw = { 231 raidopen, raidclose, raidstrategy, raidioctl, 232 raiddump, raidsize, D_DISK 233 }; 234 235 const struct cdevsw raid_cdevsw = { 236 raidopen, raidclose, raidread, raidwrite, raidioctl, 237 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 238 }; 239 240 /* XXX Not sure if the following should be replacing the raidPtrs above, 241 or if it should be used in conjunction with that... 242 */ 243 244 struct raid_softc { 245 struct device *sc_dev; 246 int sc_flags; /* flags */ 247 int sc_cflags; /* configuration flags */ 248 uint64_t sc_size; /* size of the raid device */ 249 char sc_xname[20]; /* XXX external name */ 250 struct disk sc_dkdev; /* generic disk device info */ 251 struct bufq_state *buf_queue; /* used for the device queue */ 252 }; 253 /* sc_flags */ 254 #define RAIDF_INITED 0x01 /* unit has been initialized */ 255 #define RAIDF_WLABEL 0x02 /* label area is writable */ 256 #define RAIDF_LABELLING 0x04 /* unit is currently being labelled */ 257 #define RAIDF_WANTED 0x40 /* someone is waiting to obtain a lock */ 258 #define RAIDF_LOCKED 0x80 /* unit is locked */ 259 260 #define raidunit(x) DISKUNIT(x) 261 int numraid = 0; 262 263 extern struct cfdriver raid_cd; 264 CFATTACH_DECL(raid, sizeof(struct raid_softc), 265 raid_match, raid_attach, raid_detach, NULL); 266 267 /* 268 * Allow RAIDOUTSTANDING number of simultaneous IO's to this RAID device. 269 * Be aware that large numbers can allow the driver to consume a lot of 270 * kernel memory, especially on writes, and in degraded mode reads. 271 * 272 * For example: with a stripe width of 64 blocks (32k) and 5 disks, 273 * a single 64K write will typically require 64K for the old data, 274 * 64K for the old parity, and 64K for the new parity, for a total 275 * of 192K (if the parity buffer is not re-used immediately). 276 * Even it if is used immediately, that's still 128K, which when multiplied 277 * by say 10 requests, is 1280K, *on top* of the 640K of incoming data. 278 * 279 * Now in degraded mode, for example, a 64K read on the above setup may 280 * require data reconstruction, which will require *all* of the 4 remaining 281 * disks to participate -- 4 * 32K/disk == 128K again. 282 */ 283 284 #ifndef RAIDOUTSTANDING 285 #define RAIDOUTSTANDING 6 286 #endif 287 288 #define RAIDLABELDEV(dev) \ 289 (MAKEDISKDEV(major((dev)), raidunit((dev)), RAW_PART)) 290 291 /* declared here, and made public, for the benefit of KVM stuff.. */ 292 struct raid_softc *raid_softc; 293 294 static void raidgetdefaultlabel(RF_Raid_t *, struct raid_softc *, 295 struct disklabel *); 296 static void raidgetdisklabel(dev_t); 297 static void raidmakedisklabel(struct raid_softc *); 298 299 static int raidlock(struct raid_softc *); 300 static void raidunlock(struct raid_softc *); 301 302 static void rf_markalldirty(RF_Raid_t *); 303 304 void rf_ReconThread(struct rf_recon_req *); 305 void rf_RewriteParityThread(RF_Raid_t *raidPtr); 306 void rf_CopybackThread(RF_Raid_t *raidPtr); 307 void rf_ReconstructInPlaceThread(struct rf_recon_req *); 308 int rf_autoconfig(struct device *self); 309 void rf_buildroothack(RF_ConfigSet_t *); 310 311 RF_AutoConfig_t *rf_find_raid_components(void); 312 RF_ConfigSet_t *rf_create_auto_sets(RF_AutoConfig_t *); 313 static int rf_does_it_fit(RF_ConfigSet_t *,RF_AutoConfig_t *); 314 static int rf_reasonable_label(RF_ComponentLabel_t *); 315 void rf_create_configuration(RF_AutoConfig_t *,RF_Config_t *, RF_Raid_t *); 316 int rf_set_autoconfig(RF_Raid_t *, int); 317 int rf_set_rootpartition(RF_Raid_t *, int); 318 void rf_release_all_vps(RF_ConfigSet_t *); 319 void rf_cleanup_config_set(RF_ConfigSet_t *); 320 int rf_have_enough_components(RF_ConfigSet_t *); 321 int rf_auto_config_set(RF_ConfigSet_t *, int *); 322 323 static int raidautoconfig = 0; /* Debugging, mostly. Set to 0 to not 324 allow autoconfig to take place. 325 Note that this is overridden by having 326 RAID_AUTOCONFIG as an option in the 327 kernel config file. */ 328 329 struct RF_Pools_s rf_pools; 330 331 void 332 raidattach(int num) 333 { 334 int raidID; 335 int i, rc; 336 337 #ifdef DEBUG 338 printf("raidattach: Asked for %d units\n", num); 339 #endif 340 341 if (num <= 0) { 342 #ifdef DIAGNOSTIC 343 panic("raidattach: count <= 0"); 344 #endif 345 return; 346 } 347 /* This is where all the initialization stuff gets done. */ 348 349 numraid = num; 350 351 /* Make some space for requested number of units... */ 352 353 RF_Malloc(raidPtrs, num * sizeof(RF_Raid_t *), (RF_Raid_t **)); 354 if (raidPtrs == NULL) { 355 panic("raidPtrs is NULL!!"); 356 } 357 358 rf_mutex_init(&rf_sparet_wait_mutex); 359 360 rf_sparet_wait_queue = rf_sparet_resp_queue = NULL; 361 362 for (i = 0; i < num; i++) 363 raidPtrs[i] = NULL; 364 rc = rf_BootRaidframe(); 365 if (rc == 0) 366 printf("Kernelized RAIDframe activated\n"); 367 else 368 panic("Serious error booting RAID!!"); 369 370 /* put together some datastructures like the CCD device does.. This 371 * lets us lock the device and what-not when it gets opened. */ 372 373 raid_softc = (struct raid_softc *) 374 malloc(num * sizeof(struct raid_softc), 375 M_RAIDFRAME, M_NOWAIT); 376 if (raid_softc == NULL) { 377 printf("WARNING: no memory for RAIDframe driver\n"); 378 return; 379 } 380 381 memset(raid_softc, 0, num * sizeof(struct raid_softc)); 382 383 for (raidID = 0; raidID < num; raidID++) { 384 bufq_alloc(&raid_softc[raidID].buf_queue, "fcfs", 0); 385 386 RF_Malloc(raidPtrs[raidID], sizeof(RF_Raid_t), 387 (RF_Raid_t *)); 388 if (raidPtrs[raidID] == NULL) { 389 printf("WARNING: raidPtrs[%d] is NULL\n", raidID); 390 numraid = raidID; 391 return; 392 } 393 } 394 395 if (config_cfattach_attach(raid_cd.cd_name, &raid_ca)) { 396 printf("config_cfattach_attach failed?\n"); 397 } 398 399 #ifdef RAID_AUTOCONFIG 400 raidautoconfig = 1; 401 #endif 402 403 /* 404 * Register a finalizer which will be used to auto-config RAID 405 * sets once all real hardware devices have been found. 406 */ 407 if (config_finalize_register(NULL, rf_autoconfig) != 0) 408 printf("WARNING: unable to register RAIDframe finalizer\n"); 409 } 410 411 int 412 rf_autoconfig(struct device *self) 413 { 414 RF_AutoConfig_t *ac_list; 415 RF_ConfigSet_t *config_sets; 416 int i; 417 418 if (raidautoconfig == 0) 419 return (0); 420 421 /* XXX This code can only be run once. */ 422 raidautoconfig = 0; 423 424 /* 1. locate all RAID components on the system */ 425 #ifdef DEBUG 426 printf("Searching for RAID components...\n"); 427 #endif 428 ac_list = rf_find_raid_components(); 429 430 /* 2. Sort them into their respective sets. */ 431 config_sets = rf_create_auto_sets(ac_list); 432 433 /* 434 * 3. Evaluate each set andconfigure the valid ones. 435 * This gets done in rf_buildroothack(). 436 */ 437 rf_buildroothack(config_sets); 438 439 for (i = 0; i < numraid; i++) 440 if (raidPtrs[i] != NULL && raidPtrs[i]->valid) 441 dkwedge_discover(&raid_softc[i].sc_dkdev); 442 443 return 1; 444 } 445 446 void 447 rf_buildroothack(RF_ConfigSet_t *config_sets) 448 { 449 RF_ConfigSet_t *cset; 450 RF_ConfigSet_t *next_cset; 451 int retcode; 452 int raidID; 453 int rootID; 454 int col; 455 int num_root; 456 char *devname; 457 458 rootID = 0; 459 num_root = 0; 460 cset = config_sets; 461 while(cset != NULL ) { 462 next_cset = cset->next; 463 if (rf_have_enough_components(cset) && 464 cset->ac->clabel->autoconfigure==1) { 465 retcode = rf_auto_config_set(cset,&raidID); 466 if (!retcode) { 467 #ifdef DEBUG 468 printf("raid%d: configured ok\n", raidID); 469 #endif 470 if (cset->rootable) { 471 rootID = raidID; 472 num_root++; 473 } 474 } else { 475 /* The autoconfig didn't work :( */ 476 #ifdef DEBUG 477 printf("Autoconfig failed with code %d for raid%d\n", retcode, raidID); 478 #endif 479 rf_release_all_vps(cset); 480 } 481 } else { 482 #ifdef DEBUG 483 printf("raid%d: not enough components\n", raidID); 484 #endif 485 /* we're not autoconfiguring this set... 486 release the associated resources */ 487 rf_release_all_vps(cset); 488 } 489 /* cleanup */ 490 rf_cleanup_config_set(cset); 491 cset = next_cset; 492 } 493 494 /* if the user has specified what the root device should be 495 then we don't touch booted_device or boothowto... */ 496 497 if (rootspec != NULL) 498 return; 499 500 /* we found something bootable... */ 501 502 if (num_root == 1) { 503 booted_device = raid_softc[rootID].sc_dev; 504 } else if (num_root > 1) { 505 506 /* 507 * Maybe the MD code can help. If it cannot, then 508 * setroot() will discover that we have no 509 * booted_device and will ask the user if nothing was 510 * hardwired in the kernel config file 511 */ 512 513 if (booted_device == NULL) 514 cpu_rootconf(); 515 if (booted_device == NULL) 516 return; 517 518 num_root = 0; 519 for (raidID = 0; raidID < numraid; raidID++) { 520 if (raidPtrs[raidID]->valid == 0) 521 continue; 522 523 if (raidPtrs[raidID]->root_partition == 0) 524 continue; 525 526 for (col = 0; col < raidPtrs[raidID]->numCol; col++) { 527 devname = raidPtrs[raidID]->Disks[col].devname; 528 devname += sizeof("/dev/") - 1; 529 if (strncmp(devname, booted_device->dv_xname, 530 strlen(booted_device->dv_xname)) != 0) 531 continue; 532 #ifdef DEBUG 533 printf("raid%d includes boot device %s\n", 534 raidID, devname); 535 #endif 536 num_root++; 537 rootID = raidID; 538 } 539 } 540 541 if (num_root == 1) { 542 booted_device = raid_softc[rootID].sc_dev; 543 } else { 544 /* we can't guess.. require the user to answer... */ 545 boothowto |= RB_ASKNAME; 546 } 547 } 548 } 549 550 551 int 552 raidsize(dev_t dev) 553 { 554 struct raid_softc *rs; 555 struct disklabel *lp; 556 int part, unit, omask, size; 557 558 unit = raidunit(dev); 559 if (unit >= numraid) 560 return (-1); 561 rs = &raid_softc[unit]; 562 563 if ((rs->sc_flags & RAIDF_INITED) == 0) 564 return (-1); 565 566 part = DISKPART(dev); 567 omask = rs->sc_dkdev.dk_openmask & (1 << part); 568 lp = rs->sc_dkdev.dk_label; 569 570 if (omask == 0 && raidopen(dev, 0, S_IFBLK, curlwp)) 571 return (-1); 572 573 if (lp->d_partitions[part].p_fstype != FS_SWAP) 574 size = -1; 575 else 576 size = lp->d_partitions[part].p_size * 577 (lp->d_secsize / DEV_BSIZE); 578 579 if (omask == 0 && raidclose(dev, 0, S_IFBLK, curlwp)) 580 return (-1); 581 582 return (size); 583 584 } 585 586 int 587 raiddump(dev_t dev, daddr_t blkno, void *va, 588 size_t size) 589 { 590 /* Not implemented. */ 591 return ENXIO; 592 } 593 /* ARGSUSED */ 594 int 595 raidopen(dev_t dev, int flags, int fmt, 596 struct lwp *l) 597 { 598 int unit = raidunit(dev); 599 struct raid_softc *rs; 600 struct disklabel *lp; 601 int part, pmask; 602 int error = 0; 603 604 if (unit >= numraid) 605 return (ENXIO); 606 rs = &raid_softc[unit]; 607 608 if ((error = raidlock(rs)) != 0) 609 return (error); 610 lp = rs->sc_dkdev.dk_label; 611 612 part = DISKPART(dev); 613 614 /* 615 * If there are wedges, and this is not RAW_PART, then we 616 * need to fail. 617 */ 618 if (rs->sc_dkdev.dk_nwedges != 0 && part != RAW_PART) { 619 error = EBUSY; 620 goto bad; 621 } 622 pmask = (1 << part); 623 624 if ((rs->sc_flags & RAIDF_INITED) && 625 (rs->sc_dkdev.dk_openmask == 0)) 626 raidgetdisklabel(dev); 627 628 /* make sure that this partition exists */ 629 630 if (part != RAW_PART) { 631 if (((rs->sc_flags & RAIDF_INITED) == 0) || 632 ((part >= lp->d_npartitions) || 633 (lp->d_partitions[part].p_fstype == FS_UNUSED))) { 634 error = ENXIO; 635 goto bad; 636 } 637 } 638 /* Prevent this unit from being unconfigured while open. */ 639 switch (fmt) { 640 case S_IFCHR: 641 rs->sc_dkdev.dk_copenmask |= pmask; 642 break; 643 644 case S_IFBLK: 645 rs->sc_dkdev.dk_bopenmask |= pmask; 646 break; 647 } 648 649 if ((rs->sc_dkdev.dk_openmask == 0) && 650 ((rs->sc_flags & RAIDF_INITED) != 0)) { 651 /* First one... mark things as dirty... Note that we *MUST* 652 have done a configure before this. I DO NOT WANT TO BE 653 SCRIBBLING TO RANDOM COMPONENTS UNTIL IT'S BEEN DETERMINED 654 THAT THEY BELONG TOGETHER!!!!! */ 655 /* XXX should check to see if we're only open for reading 656 here... If so, we needn't do this, but then need some 657 other way of keeping track of what's happened.. */ 658 659 rf_markalldirty( raidPtrs[unit] ); 660 } 661 662 663 rs->sc_dkdev.dk_openmask = 664 rs->sc_dkdev.dk_copenmask | rs->sc_dkdev.dk_bopenmask; 665 666 bad: 667 raidunlock(rs); 668 669 return (error); 670 671 672 } 673 /* ARGSUSED */ 674 int 675 raidclose(dev_t dev, int flags, int fmt, struct lwp *l) 676 { 677 int unit = raidunit(dev); 678 struct cfdata *cf; 679 struct raid_softc *rs; 680 int error = 0; 681 int part; 682 683 if (unit >= numraid) 684 return (ENXIO); 685 rs = &raid_softc[unit]; 686 687 if ((error = raidlock(rs)) != 0) 688 return (error); 689 690 part = DISKPART(dev); 691 692 /* ...that much closer to allowing unconfiguration... */ 693 switch (fmt) { 694 case S_IFCHR: 695 rs->sc_dkdev.dk_copenmask &= ~(1 << part); 696 break; 697 698 case S_IFBLK: 699 rs->sc_dkdev.dk_bopenmask &= ~(1 << part); 700 break; 701 } 702 rs->sc_dkdev.dk_openmask = 703 rs->sc_dkdev.dk_copenmask | rs->sc_dkdev.dk_bopenmask; 704 705 if ((rs->sc_dkdev.dk_openmask == 0) && 706 ((rs->sc_flags & RAIDF_INITED) != 0)) { 707 /* Last one... device is not unconfigured yet. 708 Device shutdown has taken care of setting the 709 clean bits if RAIDF_INITED is not set 710 mark things as clean... */ 711 712 rf_update_component_labels(raidPtrs[unit], 713 RF_FINAL_COMPONENT_UPDATE); 714 if (doing_shutdown) { 715 /* last one, and we're going down, so 716 lights out for this RAID set too. */ 717 error = rf_Shutdown(raidPtrs[unit]); 718 719 /* It's no longer initialized... */ 720 rs->sc_flags &= ~RAIDF_INITED; 721 722 /* detach the device */ 723 724 cf = device_cfdata(rs->sc_dev); 725 error = config_detach(rs->sc_dev, DETACH_QUIET); 726 free(cf, M_RAIDFRAME); 727 728 /* Detach the disk. */ 729 pseudo_disk_detach(&rs->sc_dkdev); 730 } 731 } 732 733 raidunlock(rs); 734 return (0); 735 736 } 737 738 void 739 raidstrategy(struct buf *bp) 740 { 741 int s; 742 743 unsigned int raidID = raidunit(bp->b_dev); 744 RF_Raid_t *raidPtr; 745 struct raid_softc *rs = &raid_softc[raidID]; 746 int wlabel; 747 748 if ((rs->sc_flags & RAIDF_INITED) ==0) { 749 bp->b_error = ENXIO; 750 bp->b_flags |= B_ERROR; 751 goto done; 752 } 753 if (raidID >= numraid || !raidPtrs[raidID]) { 754 bp->b_error = ENODEV; 755 bp->b_flags |= B_ERROR; 756 goto done; 757 } 758 raidPtr = raidPtrs[raidID]; 759 if (!raidPtr->valid) { 760 bp->b_error = ENODEV; 761 bp->b_flags |= B_ERROR; 762 goto done; 763 } 764 if (bp->b_bcount == 0) { 765 db1_printf(("b_bcount is zero..\n")); 766 goto done; 767 } 768 769 /* 770 * Do bounds checking and adjust transfer. If there's an 771 * error, the bounds check will flag that for us. 772 */ 773 774 wlabel = rs->sc_flags & (RAIDF_WLABEL | RAIDF_LABELLING); 775 if (DISKPART(bp->b_dev) == RAW_PART) { 776 uint64_t size; /* device size in DEV_BSIZE unit */ 777 778 if (raidPtr->logBytesPerSector > DEV_BSHIFT) { 779 size = raidPtr->totalSectors << 780 (raidPtr->logBytesPerSector - DEV_BSHIFT); 781 } else { 782 size = raidPtr->totalSectors >> 783 (DEV_BSHIFT - raidPtr->logBytesPerSector); 784 } 785 if (bounds_check_with_mediasize(bp, DEV_BSIZE, size) <= 0) { 786 goto done; 787 } 788 } else { 789 if (bounds_check_with_label(&rs->sc_dkdev, bp, wlabel) <= 0) { 790 db1_printf(("Bounds check failed!!:%d %d\n", 791 (int) bp->b_blkno, (int) wlabel)); 792 goto done; 793 } 794 } 795 s = splbio(); 796 797 bp->b_resid = 0; 798 799 /* stuff it onto our queue */ 800 BUFQ_PUT(rs->buf_queue, bp); 801 802 /* scheduled the IO to happen at the next convenient time */ 803 wakeup(&(raidPtrs[raidID]->iodone)); 804 805 splx(s); 806 return; 807 808 done: 809 bp->b_resid = bp->b_bcount; 810 biodone(bp); 811 } 812 /* ARGSUSED */ 813 int 814 raidread(dev_t dev, struct uio *uio, int flags) 815 { 816 int unit = raidunit(dev); 817 struct raid_softc *rs; 818 819 if (unit >= numraid) 820 return (ENXIO); 821 rs = &raid_softc[unit]; 822 823 if ((rs->sc_flags & RAIDF_INITED) == 0) 824 return (ENXIO); 825 826 return (physio(raidstrategy, NULL, dev, B_READ, minphys, uio)); 827 828 } 829 /* ARGSUSED */ 830 int 831 raidwrite(dev_t dev, struct uio *uio, int flags) 832 { 833 int unit = raidunit(dev); 834 struct raid_softc *rs; 835 836 if (unit >= numraid) 837 return (ENXIO); 838 rs = &raid_softc[unit]; 839 840 if ((rs->sc_flags & RAIDF_INITED) == 0) 841 return (ENXIO); 842 843 return (physio(raidstrategy, NULL, dev, B_WRITE, minphys, uio)); 844 845 } 846 847 int 848 raidioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 849 { 850 int unit = raidunit(dev); 851 int error = 0; 852 int part, pmask; 853 struct cfdata *cf; 854 struct raid_softc *rs; 855 RF_Config_t *k_cfg, *u_cfg; 856 RF_Raid_t *raidPtr; 857 RF_RaidDisk_t *diskPtr; 858 RF_AccTotals_t *totals; 859 RF_DeviceConfig_t *d_cfg, **ucfgp; 860 u_char *specific_buf; 861 int retcode = 0; 862 int column; 863 int raidid; 864 struct rf_recon_req *rrcopy, *rr; 865 RF_ComponentLabel_t *clabel; 866 RF_ComponentLabel_t *ci_label; 867 RF_ComponentLabel_t **clabel_ptr; 868 RF_SingleComponent_t *sparePtr,*componentPtr; 869 RF_SingleComponent_t component; 870 RF_ProgressInfo_t progressInfo, **progressInfoPtr; 871 int i, j, d; 872 #ifdef __HAVE_OLD_DISKLABEL 873 struct disklabel newlabel; 874 #endif 875 struct dkwedge_info *dkw; 876 877 if (unit >= numraid) 878 return (ENXIO); 879 rs = &raid_softc[unit]; 880 raidPtr = raidPtrs[unit]; 881 882 db1_printf(("raidioctl: %d %d %d %d\n", (int) dev, 883 (int) DISKPART(dev), (int) unit, (int) cmd)); 884 885 /* Must be open for writes for these commands... */ 886 switch (cmd) { 887 #ifdef DIOCGSECTORSIZE 888 case DIOCGSECTORSIZE: 889 *(u_int *)data = raidPtr->bytesPerSector; 890 return 0; 891 case DIOCGMEDIASIZE: 892 *(off_t *)data = 893 (off_t)raidPtr->totalSectors * raidPtr->bytesPerSector; 894 return 0; 895 #endif 896 case DIOCSDINFO: 897 case DIOCWDINFO: 898 #ifdef __HAVE_OLD_DISKLABEL 899 case ODIOCWDINFO: 900 case ODIOCSDINFO: 901 #endif 902 case DIOCWLABEL: 903 case DIOCAWEDGE: 904 case DIOCDWEDGE: 905 if ((flag & FWRITE) == 0) 906 return (EBADF); 907 } 908 909 /* Must be initialized for these... */ 910 switch (cmd) { 911 case DIOCGDINFO: 912 case DIOCSDINFO: 913 case DIOCWDINFO: 914 #ifdef __HAVE_OLD_DISKLABEL 915 case ODIOCGDINFO: 916 case ODIOCWDINFO: 917 case ODIOCSDINFO: 918 case ODIOCGDEFLABEL: 919 #endif 920 case DIOCGPART: 921 case DIOCWLABEL: 922 case DIOCGDEFLABEL: 923 case DIOCAWEDGE: 924 case DIOCDWEDGE: 925 case DIOCLWEDGES: 926 case RAIDFRAME_SHUTDOWN: 927 case RAIDFRAME_REWRITEPARITY: 928 case RAIDFRAME_GET_INFO: 929 case RAIDFRAME_RESET_ACCTOTALS: 930 case RAIDFRAME_GET_ACCTOTALS: 931 case RAIDFRAME_KEEP_ACCTOTALS: 932 case RAIDFRAME_GET_SIZE: 933 case RAIDFRAME_FAIL_DISK: 934 case RAIDFRAME_COPYBACK: 935 case RAIDFRAME_CHECK_RECON_STATUS: 936 case RAIDFRAME_CHECK_RECON_STATUS_EXT: 937 case RAIDFRAME_GET_COMPONENT_LABEL: 938 case RAIDFRAME_SET_COMPONENT_LABEL: 939 case RAIDFRAME_ADD_HOT_SPARE: 940 case RAIDFRAME_REMOVE_HOT_SPARE: 941 case RAIDFRAME_INIT_LABELS: 942 case RAIDFRAME_REBUILD_IN_PLACE: 943 case RAIDFRAME_CHECK_PARITY: 944 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS: 945 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS_EXT: 946 case RAIDFRAME_CHECK_COPYBACK_STATUS: 947 case RAIDFRAME_CHECK_COPYBACK_STATUS_EXT: 948 case RAIDFRAME_SET_AUTOCONFIG: 949 case RAIDFRAME_SET_ROOT: 950 case RAIDFRAME_DELETE_COMPONENT: 951 case RAIDFRAME_INCORPORATE_HOT_SPARE: 952 if ((rs->sc_flags & RAIDF_INITED) == 0) 953 return (ENXIO); 954 } 955 956 switch (cmd) { 957 958 /* configure the system */ 959 case RAIDFRAME_CONFIGURE: 960 961 if (raidPtr->valid) { 962 /* There is a valid RAID set running on this unit! */ 963 printf("raid%d: Device already configured!\n",unit); 964 return(EINVAL); 965 } 966 967 /* copy-in the configuration information */ 968 /* data points to a pointer to the configuration structure */ 969 970 u_cfg = *((RF_Config_t **) data); 971 RF_Malloc(k_cfg, sizeof(RF_Config_t), (RF_Config_t *)); 972 if (k_cfg == NULL) { 973 return (ENOMEM); 974 } 975 retcode = copyin(u_cfg, k_cfg, sizeof(RF_Config_t)); 976 if (retcode) { 977 RF_Free(k_cfg, sizeof(RF_Config_t)); 978 db1_printf(("rf_ioctl: retcode=%d copyin.1\n", 979 retcode)); 980 return (retcode); 981 } 982 /* allocate a buffer for the layout-specific data, and copy it 983 * in */ 984 if (k_cfg->layoutSpecificSize) { 985 if (k_cfg->layoutSpecificSize > 10000) { 986 /* sanity check */ 987 RF_Free(k_cfg, sizeof(RF_Config_t)); 988 return (EINVAL); 989 } 990 RF_Malloc(specific_buf, k_cfg->layoutSpecificSize, 991 (u_char *)); 992 if (specific_buf == NULL) { 993 RF_Free(k_cfg, sizeof(RF_Config_t)); 994 return (ENOMEM); 995 } 996 retcode = copyin(k_cfg->layoutSpecific, specific_buf, 997 k_cfg->layoutSpecificSize); 998 if (retcode) { 999 RF_Free(k_cfg, sizeof(RF_Config_t)); 1000 RF_Free(specific_buf, 1001 k_cfg->layoutSpecificSize); 1002 db1_printf(("rf_ioctl: retcode=%d copyin.2\n", 1003 retcode)); 1004 return (retcode); 1005 } 1006 } else 1007 specific_buf = NULL; 1008 k_cfg->layoutSpecific = specific_buf; 1009 1010 /* should do some kind of sanity check on the configuration. 1011 * Store the sum of all the bytes in the last byte? */ 1012 1013 /* configure the system */ 1014 1015 /* 1016 * Clear the entire RAID descriptor, just to make sure 1017 * there is no stale data left in the case of a 1018 * reconfiguration 1019 */ 1020 memset((char *) raidPtr, 0, sizeof(RF_Raid_t)); 1021 raidPtr->raidid = unit; 1022 1023 retcode = rf_Configure(raidPtr, k_cfg, NULL); 1024 1025 if (retcode == 0) { 1026 1027 /* allow this many simultaneous IO's to 1028 this RAID device */ 1029 raidPtr->openings = RAIDOUTSTANDING; 1030 1031 raidinit(raidPtr); 1032 rf_markalldirty(raidPtr); 1033 } 1034 /* free the buffers. No return code here. */ 1035 if (k_cfg->layoutSpecificSize) { 1036 RF_Free(specific_buf, k_cfg->layoutSpecificSize); 1037 } 1038 RF_Free(k_cfg, sizeof(RF_Config_t)); 1039 1040 return (retcode); 1041 1042 /* shutdown the system */ 1043 case RAIDFRAME_SHUTDOWN: 1044 1045 if ((error = raidlock(rs)) != 0) 1046 return (error); 1047 1048 /* 1049 * If somebody has a partition mounted, we shouldn't 1050 * shutdown. 1051 */ 1052 1053 part = DISKPART(dev); 1054 pmask = (1 << part); 1055 if ((rs->sc_dkdev.dk_openmask & ~pmask) || 1056 ((rs->sc_dkdev.dk_bopenmask & pmask) && 1057 (rs->sc_dkdev.dk_copenmask & pmask))) { 1058 raidunlock(rs); 1059 return (EBUSY); 1060 } 1061 1062 retcode = rf_Shutdown(raidPtr); 1063 1064 /* It's no longer initialized... */ 1065 rs->sc_flags &= ~RAIDF_INITED; 1066 1067 /* free the pseudo device attach bits */ 1068 1069 cf = device_cfdata(rs->sc_dev); 1070 /* XXX this causes us to not return any errors 1071 from the above call to rf_Shutdown() */ 1072 retcode = config_detach(rs->sc_dev, DETACH_QUIET); 1073 free(cf, M_RAIDFRAME); 1074 1075 /* Detach the disk. */ 1076 pseudo_disk_detach(&rs->sc_dkdev); 1077 1078 raidunlock(rs); 1079 1080 return (retcode); 1081 case RAIDFRAME_GET_COMPONENT_LABEL: 1082 clabel_ptr = (RF_ComponentLabel_t **) data; 1083 /* need to read the component label for the disk indicated 1084 by row,column in clabel */ 1085 1086 /* For practice, let's get it directly fromdisk, rather 1087 than from the in-core copy */ 1088 RF_Malloc( clabel, sizeof( RF_ComponentLabel_t ), 1089 (RF_ComponentLabel_t *)); 1090 if (clabel == NULL) 1091 return (ENOMEM); 1092 1093 retcode = copyin( *clabel_ptr, clabel, 1094 sizeof(RF_ComponentLabel_t)); 1095 1096 if (retcode) { 1097 RF_Free( clabel, sizeof(RF_ComponentLabel_t)); 1098 return(retcode); 1099 } 1100 1101 clabel->row = 0; /* Don't allow looking at anything else.*/ 1102 1103 column = clabel->column; 1104 1105 if ((column < 0) || (column >= raidPtr->numCol + 1106 raidPtr->numSpare)) { 1107 RF_Free( clabel, sizeof(RF_ComponentLabel_t)); 1108 return(EINVAL); 1109 } 1110 1111 retcode = raidread_component_label(raidPtr->Disks[column].dev, 1112 raidPtr->raid_cinfo[column].ci_vp, 1113 clabel ); 1114 1115 if (retcode == 0) { 1116 retcode = copyout(clabel, *clabel_ptr, 1117 sizeof(RF_ComponentLabel_t)); 1118 } 1119 RF_Free(clabel, sizeof(RF_ComponentLabel_t)); 1120 return (retcode); 1121 1122 case RAIDFRAME_SET_COMPONENT_LABEL: 1123 clabel = (RF_ComponentLabel_t *) data; 1124 1125 /* XXX check the label for valid stuff... */ 1126 /* Note that some things *should not* get modified -- 1127 the user should be re-initing the labels instead of 1128 trying to patch things. 1129 */ 1130 1131 raidid = raidPtr->raidid; 1132 #ifdef DEBUG 1133 printf("raid%d: Got component label:\n", raidid); 1134 printf("raid%d: Version: %d\n", raidid, clabel->version); 1135 printf("raid%d: Serial Number: %d\n", raidid, clabel->serial_number); 1136 printf("raid%d: Mod counter: %d\n", raidid, clabel->mod_counter); 1137 printf("raid%d: Column: %d\n", raidid, clabel->column); 1138 printf("raid%d: Num Columns: %d\n", raidid, clabel->num_columns); 1139 printf("raid%d: Clean: %d\n", raidid, clabel->clean); 1140 printf("raid%d: Status: %d\n", raidid, clabel->status); 1141 #endif 1142 clabel->row = 0; 1143 column = clabel->column; 1144 1145 if ((column < 0) || (column >= raidPtr->numCol)) { 1146 return(EINVAL); 1147 } 1148 1149 /* XXX this isn't allowed to do anything for now :-) */ 1150 1151 /* XXX and before it is, we need to fill in the rest 1152 of the fields!?!?!?! */ 1153 #if 0 1154 raidwrite_component_label( 1155 raidPtr->Disks[column].dev, 1156 raidPtr->raid_cinfo[column].ci_vp, 1157 clabel ); 1158 #endif 1159 return (0); 1160 1161 case RAIDFRAME_INIT_LABELS: 1162 clabel = (RF_ComponentLabel_t *) data; 1163 /* 1164 we only want the serial number from 1165 the above. We get all the rest of the information 1166 from the config that was used to create this RAID 1167 set. 1168 */ 1169 1170 raidPtr->serial_number = clabel->serial_number; 1171 1172 RF_Malloc(ci_label, sizeof(RF_ComponentLabel_t), 1173 (RF_ComponentLabel_t *)); 1174 if (ci_label == NULL) 1175 return (ENOMEM); 1176 1177 raid_init_component_label(raidPtr, ci_label); 1178 ci_label->serial_number = clabel->serial_number; 1179 ci_label->row = 0; /* we dont' pretend to support more */ 1180 1181 for(column=0;column<raidPtr->numCol;column++) { 1182 diskPtr = &raidPtr->Disks[column]; 1183 if (!RF_DEAD_DISK(diskPtr->status)) { 1184 ci_label->partitionSize = diskPtr->partitionSize; 1185 ci_label->column = column; 1186 raidwrite_component_label( 1187 raidPtr->Disks[column].dev, 1188 raidPtr->raid_cinfo[column].ci_vp, 1189 ci_label ); 1190 } 1191 } 1192 RF_Free(ci_label, sizeof(RF_ComponentLabel_t)); 1193 1194 return (retcode); 1195 case RAIDFRAME_SET_AUTOCONFIG: 1196 d = rf_set_autoconfig(raidPtr, *(int *) data); 1197 printf("raid%d: New autoconfig value is: %d\n", 1198 raidPtr->raidid, d); 1199 *(int *) data = d; 1200 return (retcode); 1201 1202 case RAIDFRAME_SET_ROOT: 1203 d = rf_set_rootpartition(raidPtr, *(int *) data); 1204 printf("raid%d: New rootpartition value is: %d\n", 1205 raidPtr->raidid, d); 1206 *(int *) data = d; 1207 return (retcode); 1208 1209 /* initialize all parity */ 1210 case RAIDFRAME_REWRITEPARITY: 1211 1212 if (raidPtr->Layout.map->faultsTolerated == 0) { 1213 /* Parity for RAID 0 is trivially correct */ 1214 raidPtr->parity_good = RF_RAID_CLEAN; 1215 return(0); 1216 } 1217 1218 if (raidPtr->parity_rewrite_in_progress == 1) { 1219 /* Re-write is already in progress! */ 1220 return(EINVAL); 1221 } 1222 1223 retcode = RF_CREATE_THREAD(raidPtr->parity_rewrite_thread, 1224 rf_RewriteParityThread, 1225 raidPtr,"raid_parity"); 1226 return (retcode); 1227 1228 1229 case RAIDFRAME_ADD_HOT_SPARE: 1230 sparePtr = (RF_SingleComponent_t *) data; 1231 memcpy( &component, sparePtr, sizeof(RF_SingleComponent_t)); 1232 retcode = rf_add_hot_spare(raidPtr, &component); 1233 return(retcode); 1234 1235 case RAIDFRAME_REMOVE_HOT_SPARE: 1236 return(retcode); 1237 1238 case RAIDFRAME_DELETE_COMPONENT: 1239 componentPtr = (RF_SingleComponent_t *)data; 1240 memcpy( &component, componentPtr, 1241 sizeof(RF_SingleComponent_t)); 1242 retcode = rf_delete_component(raidPtr, &component); 1243 return(retcode); 1244 1245 case RAIDFRAME_INCORPORATE_HOT_SPARE: 1246 componentPtr = (RF_SingleComponent_t *)data; 1247 memcpy( &component, componentPtr, 1248 sizeof(RF_SingleComponent_t)); 1249 retcode = rf_incorporate_hot_spare(raidPtr, &component); 1250 return(retcode); 1251 1252 case RAIDFRAME_REBUILD_IN_PLACE: 1253 1254 if (raidPtr->Layout.map->faultsTolerated == 0) { 1255 /* Can't do this on a RAID 0!! */ 1256 return(EINVAL); 1257 } 1258 1259 if (raidPtr->recon_in_progress == 1) { 1260 /* a reconstruct is already in progress! */ 1261 return(EINVAL); 1262 } 1263 1264 componentPtr = (RF_SingleComponent_t *) data; 1265 memcpy( &component, componentPtr, 1266 sizeof(RF_SingleComponent_t)); 1267 component.row = 0; /* we don't support any more */ 1268 column = component.column; 1269 1270 if ((column < 0) || (column >= raidPtr->numCol)) { 1271 return(EINVAL); 1272 } 1273 1274 RF_LOCK_MUTEX(raidPtr->mutex); 1275 if ((raidPtr->Disks[column].status == rf_ds_optimal) && 1276 (raidPtr->numFailures > 0)) { 1277 /* XXX 0 above shouldn't be constant!!! */ 1278 /* some component other than this has failed. 1279 Let's not make things worse than they already 1280 are... */ 1281 printf("raid%d: Unable to reconstruct to disk at:\n", 1282 raidPtr->raidid); 1283 printf("raid%d: Col: %d Too many failures.\n", 1284 raidPtr->raidid, column); 1285 RF_UNLOCK_MUTEX(raidPtr->mutex); 1286 return (EINVAL); 1287 } 1288 if (raidPtr->Disks[column].status == 1289 rf_ds_reconstructing) { 1290 printf("raid%d: Unable to reconstruct to disk at:\n", 1291 raidPtr->raidid); 1292 printf("raid%d: Col: %d Reconstruction already occuring!\n", raidPtr->raidid, column); 1293 1294 RF_UNLOCK_MUTEX(raidPtr->mutex); 1295 return (EINVAL); 1296 } 1297 if (raidPtr->Disks[column].status == rf_ds_spared) { 1298 RF_UNLOCK_MUTEX(raidPtr->mutex); 1299 return (EINVAL); 1300 } 1301 RF_UNLOCK_MUTEX(raidPtr->mutex); 1302 1303 RF_Malloc(rrcopy, sizeof(*rrcopy), (struct rf_recon_req *)); 1304 if (rrcopy == NULL) 1305 return(ENOMEM); 1306 1307 rrcopy->raidPtr = (void *) raidPtr; 1308 rrcopy->col = column; 1309 1310 retcode = RF_CREATE_THREAD(raidPtr->recon_thread, 1311 rf_ReconstructInPlaceThread, 1312 rrcopy,"raid_reconip"); 1313 return(retcode); 1314 1315 case RAIDFRAME_GET_INFO: 1316 if (!raidPtr->valid) 1317 return (ENODEV); 1318 ucfgp = (RF_DeviceConfig_t **) data; 1319 RF_Malloc(d_cfg, sizeof(RF_DeviceConfig_t), 1320 (RF_DeviceConfig_t *)); 1321 if (d_cfg == NULL) 1322 return (ENOMEM); 1323 d_cfg->rows = 1; /* there is only 1 row now */ 1324 d_cfg->cols = raidPtr->numCol; 1325 d_cfg->ndevs = raidPtr->numCol; 1326 if (d_cfg->ndevs >= RF_MAX_DISKS) { 1327 RF_Free(d_cfg, sizeof(RF_DeviceConfig_t)); 1328 return (ENOMEM); 1329 } 1330 d_cfg->nspares = raidPtr->numSpare; 1331 if (d_cfg->nspares >= RF_MAX_DISKS) { 1332 RF_Free(d_cfg, sizeof(RF_DeviceConfig_t)); 1333 return (ENOMEM); 1334 } 1335 d_cfg->maxqdepth = raidPtr->maxQueueDepth; 1336 d = 0; 1337 for (j = 0; j < d_cfg->cols; j++) { 1338 d_cfg->devs[d] = raidPtr->Disks[j]; 1339 d++; 1340 } 1341 for (j = d_cfg->cols, i = 0; i < d_cfg->nspares; i++, j++) { 1342 d_cfg->spares[i] = raidPtr->Disks[j]; 1343 } 1344 retcode = copyout(d_cfg, *ucfgp, sizeof(RF_DeviceConfig_t)); 1345 RF_Free(d_cfg, sizeof(RF_DeviceConfig_t)); 1346 1347 return (retcode); 1348 1349 case RAIDFRAME_CHECK_PARITY: 1350 *(int *) data = raidPtr->parity_good; 1351 return (0); 1352 1353 case RAIDFRAME_RESET_ACCTOTALS: 1354 memset(&raidPtr->acc_totals, 0, sizeof(raidPtr->acc_totals)); 1355 return (0); 1356 1357 case RAIDFRAME_GET_ACCTOTALS: 1358 totals = (RF_AccTotals_t *) data; 1359 *totals = raidPtr->acc_totals; 1360 return (0); 1361 1362 case RAIDFRAME_KEEP_ACCTOTALS: 1363 raidPtr->keep_acc_totals = *(int *)data; 1364 return (0); 1365 1366 case RAIDFRAME_GET_SIZE: 1367 *(int *) data = raidPtr->totalSectors; 1368 return (0); 1369 1370 /* fail a disk & optionally start reconstruction */ 1371 case RAIDFRAME_FAIL_DISK: 1372 1373 if (raidPtr->Layout.map->faultsTolerated == 0) { 1374 /* Can't do this on a RAID 0!! */ 1375 return(EINVAL); 1376 } 1377 1378 rr = (struct rf_recon_req *) data; 1379 rr->row = 0; 1380 if (rr->col < 0 || rr->col >= raidPtr->numCol) 1381 return (EINVAL); 1382 1383 1384 RF_LOCK_MUTEX(raidPtr->mutex); 1385 if (raidPtr->status == rf_rs_reconstructing) { 1386 /* you can't fail a disk while we're reconstructing! */ 1387 /* XXX wrong for RAID6 */ 1388 RF_UNLOCK_MUTEX(raidPtr->mutex); 1389 return (EINVAL); 1390 } 1391 if ((raidPtr->Disks[rr->col].status == 1392 rf_ds_optimal) && (raidPtr->numFailures > 0)) { 1393 /* some other component has failed. Let's not make 1394 things worse. XXX wrong for RAID6 */ 1395 RF_UNLOCK_MUTEX(raidPtr->mutex); 1396 return (EINVAL); 1397 } 1398 if (raidPtr->Disks[rr->col].status == rf_ds_spared) { 1399 /* Can't fail a spared disk! */ 1400 RF_UNLOCK_MUTEX(raidPtr->mutex); 1401 return (EINVAL); 1402 } 1403 RF_UNLOCK_MUTEX(raidPtr->mutex); 1404 1405 /* make a copy of the recon request so that we don't rely on 1406 * the user's buffer */ 1407 RF_Malloc(rrcopy, sizeof(*rrcopy), (struct rf_recon_req *)); 1408 if (rrcopy == NULL) 1409 return(ENOMEM); 1410 memcpy(rrcopy, rr, sizeof(*rr)); 1411 rrcopy->raidPtr = (void *) raidPtr; 1412 1413 retcode = RF_CREATE_THREAD(raidPtr->recon_thread, 1414 rf_ReconThread, 1415 rrcopy,"raid_recon"); 1416 return (0); 1417 1418 /* invoke a copyback operation after recon on whatever disk 1419 * needs it, if any */ 1420 case RAIDFRAME_COPYBACK: 1421 1422 if (raidPtr->Layout.map->faultsTolerated == 0) { 1423 /* This makes no sense on a RAID 0!! */ 1424 return(EINVAL); 1425 } 1426 1427 if (raidPtr->copyback_in_progress == 1) { 1428 /* Copyback is already in progress! */ 1429 return(EINVAL); 1430 } 1431 1432 retcode = RF_CREATE_THREAD(raidPtr->copyback_thread, 1433 rf_CopybackThread, 1434 raidPtr,"raid_copyback"); 1435 return (retcode); 1436 1437 /* return the percentage completion of reconstruction */ 1438 case RAIDFRAME_CHECK_RECON_STATUS: 1439 if (raidPtr->Layout.map->faultsTolerated == 0) { 1440 /* This makes no sense on a RAID 0, so tell the 1441 user it's done. */ 1442 *(int *) data = 100; 1443 return(0); 1444 } 1445 if (raidPtr->status != rf_rs_reconstructing) 1446 *(int *) data = 100; 1447 else { 1448 if (raidPtr->reconControl->numRUsTotal > 0) { 1449 *(int *) data = (raidPtr->reconControl->numRUsComplete * 100 / raidPtr->reconControl->numRUsTotal); 1450 } else { 1451 *(int *) data = 0; 1452 } 1453 } 1454 return (0); 1455 case RAIDFRAME_CHECK_RECON_STATUS_EXT: 1456 progressInfoPtr = (RF_ProgressInfo_t **) data; 1457 if (raidPtr->status != rf_rs_reconstructing) { 1458 progressInfo.remaining = 0; 1459 progressInfo.completed = 100; 1460 progressInfo.total = 100; 1461 } else { 1462 progressInfo.total = 1463 raidPtr->reconControl->numRUsTotal; 1464 progressInfo.completed = 1465 raidPtr->reconControl->numRUsComplete; 1466 progressInfo.remaining = progressInfo.total - 1467 progressInfo.completed; 1468 } 1469 retcode = copyout(&progressInfo, *progressInfoPtr, 1470 sizeof(RF_ProgressInfo_t)); 1471 return (retcode); 1472 1473 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS: 1474 if (raidPtr->Layout.map->faultsTolerated == 0) { 1475 /* This makes no sense on a RAID 0, so tell the 1476 user it's done. */ 1477 *(int *) data = 100; 1478 return(0); 1479 } 1480 if (raidPtr->parity_rewrite_in_progress == 1) { 1481 *(int *) data = 100 * 1482 raidPtr->parity_rewrite_stripes_done / 1483 raidPtr->Layout.numStripe; 1484 } else { 1485 *(int *) data = 100; 1486 } 1487 return (0); 1488 1489 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS_EXT: 1490 progressInfoPtr = (RF_ProgressInfo_t **) data; 1491 if (raidPtr->parity_rewrite_in_progress == 1) { 1492 progressInfo.total = raidPtr->Layout.numStripe; 1493 progressInfo.completed = 1494 raidPtr->parity_rewrite_stripes_done; 1495 progressInfo.remaining = progressInfo.total - 1496 progressInfo.completed; 1497 } else { 1498 progressInfo.remaining = 0; 1499 progressInfo.completed = 100; 1500 progressInfo.total = 100; 1501 } 1502 retcode = copyout(&progressInfo, *progressInfoPtr, 1503 sizeof(RF_ProgressInfo_t)); 1504 return (retcode); 1505 1506 case RAIDFRAME_CHECK_COPYBACK_STATUS: 1507 if (raidPtr->Layout.map->faultsTolerated == 0) { 1508 /* This makes no sense on a RAID 0 */ 1509 *(int *) data = 100; 1510 return(0); 1511 } 1512 if (raidPtr->copyback_in_progress == 1) { 1513 *(int *) data = 100 * raidPtr->copyback_stripes_done / 1514 raidPtr->Layout.numStripe; 1515 } else { 1516 *(int *) data = 100; 1517 } 1518 return (0); 1519 1520 case RAIDFRAME_CHECK_COPYBACK_STATUS_EXT: 1521 progressInfoPtr = (RF_ProgressInfo_t **) data; 1522 if (raidPtr->copyback_in_progress == 1) { 1523 progressInfo.total = raidPtr->Layout.numStripe; 1524 progressInfo.completed = 1525 raidPtr->copyback_stripes_done; 1526 progressInfo.remaining = progressInfo.total - 1527 progressInfo.completed; 1528 } else { 1529 progressInfo.remaining = 0; 1530 progressInfo.completed = 100; 1531 progressInfo.total = 100; 1532 } 1533 retcode = copyout(&progressInfo, *progressInfoPtr, 1534 sizeof(RF_ProgressInfo_t)); 1535 return (retcode); 1536 1537 /* the sparetable daemon calls this to wait for the kernel to 1538 * need a spare table. this ioctl does not return until a 1539 * spare table is needed. XXX -- calling mpsleep here in the 1540 * ioctl code is almost certainly wrong and evil. -- XXX XXX 1541 * -- I should either compute the spare table in the kernel, 1542 * or have a different -- XXX XXX -- interface (a different 1543 * character device) for delivering the table -- XXX */ 1544 #if 0 1545 case RAIDFRAME_SPARET_WAIT: 1546 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1547 while (!rf_sparet_wait_queue) 1548 mpsleep(&rf_sparet_wait_queue, (PZERO + 1) | PCATCH, "sparet wait", 0, (void *) simple_lock_addr(rf_sparet_wait_mutex), MS_LOCK_SIMPLE); 1549 waitreq = rf_sparet_wait_queue; 1550 rf_sparet_wait_queue = rf_sparet_wait_queue->next; 1551 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1552 1553 /* structure assignment */ 1554 *((RF_SparetWait_t *) data) = *waitreq; 1555 1556 RF_Free(waitreq, sizeof(*waitreq)); 1557 return (0); 1558 1559 /* wakes up a process waiting on SPARET_WAIT and puts an error 1560 * code in it that will cause the dameon to exit */ 1561 case RAIDFRAME_ABORT_SPARET_WAIT: 1562 RF_Malloc(waitreq, sizeof(*waitreq), (RF_SparetWait_t *)); 1563 waitreq->fcol = -1; 1564 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1565 waitreq->next = rf_sparet_wait_queue; 1566 rf_sparet_wait_queue = waitreq; 1567 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1568 wakeup(&rf_sparet_wait_queue); 1569 return (0); 1570 1571 /* used by the spare table daemon to deliver a spare table 1572 * into the kernel */ 1573 case RAIDFRAME_SEND_SPARET: 1574 1575 /* install the spare table */ 1576 retcode = rf_SetSpareTable(raidPtr, *(void **) data); 1577 1578 /* respond to the requestor. the return status of the spare 1579 * table installation is passed in the "fcol" field */ 1580 RF_Malloc(waitreq, sizeof(*waitreq), (RF_SparetWait_t *)); 1581 waitreq->fcol = retcode; 1582 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1583 waitreq->next = rf_sparet_resp_queue; 1584 rf_sparet_resp_queue = waitreq; 1585 wakeup(&rf_sparet_resp_queue); 1586 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1587 1588 return (retcode); 1589 #endif 1590 1591 default: 1592 break; /* fall through to the os-specific code below */ 1593 1594 } 1595 1596 if (!raidPtr->valid) 1597 return (EINVAL); 1598 1599 /* 1600 * Add support for "regular" device ioctls here. 1601 */ 1602 1603 switch (cmd) { 1604 case DIOCGDINFO: 1605 *(struct disklabel *) data = *(rs->sc_dkdev.dk_label); 1606 break; 1607 #ifdef __HAVE_OLD_DISKLABEL 1608 case ODIOCGDINFO: 1609 newlabel = *(rs->sc_dkdev.dk_label); 1610 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1611 return ENOTTY; 1612 memcpy(data, &newlabel, sizeof (struct olddisklabel)); 1613 break; 1614 #endif 1615 1616 case DIOCGPART: 1617 ((struct partinfo *) data)->disklab = rs->sc_dkdev.dk_label; 1618 ((struct partinfo *) data)->part = 1619 &rs->sc_dkdev.dk_label->d_partitions[DISKPART(dev)]; 1620 break; 1621 1622 case DIOCWDINFO: 1623 case DIOCSDINFO: 1624 #ifdef __HAVE_OLD_DISKLABEL 1625 case ODIOCWDINFO: 1626 case ODIOCSDINFO: 1627 #endif 1628 { 1629 struct disklabel *lp; 1630 #ifdef __HAVE_OLD_DISKLABEL 1631 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1632 memset(&newlabel, 0, sizeof newlabel); 1633 memcpy(&newlabel, data, sizeof (struct olddisklabel)); 1634 lp = &newlabel; 1635 } else 1636 #endif 1637 lp = (struct disklabel *)data; 1638 1639 if ((error = raidlock(rs)) != 0) 1640 return (error); 1641 1642 rs->sc_flags |= RAIDF_LABELLING; 1643 1644 error = setdisklabel(rs->sc_dkdev.dk_label, 1645 lp, 0, rs->sc_dkdev.dk_cpulabel); 1646 if (error == 0) { 1647 if (cmd == DIOCWDINFO 1648 #ifdef __HAVE_OLD_DISKLABEL 1649 || cmd == ODIOCWDINFO 1650 #endif 1651 ) 1652 error = writedisklabel(RAIDLABELDEV(dev), 1653 raidstrategy, rs->sc_dkdev.dk_label, 1654 rs->sc_dkdev.dk_cpulabel); 1655 } 1656 rs->sc_flags &= ~RAIDF_LABELLING; 1657 1658 raidunlock(rs); 1659 1660 if (error) 1661 return (error); 1662 break; 1663 } 1664 1665 case DIOCWLABEL: 1666 if (*(int *) data != 0) 1667 rs->sc_flags |= RAIDF_WLABEL; 1668 else 1669 rs->sc_flags &= ~RAIDF_WLABEL; 1670 break; 1671 1672 case DIOCGDEFLABEL: 1673 raidgetdefaultlabel(raidPtr, rs, (struct disklabel *) data); 1674 break; 1675 1676 #ifdef __HAVE_OLD_DISKLABEL 1677 case ODIOCGDEFLABEL: 1678 raidgetdefaultlabel(raidPtr, rs, &newlabel); 1679 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1680 return ENOTTY; 1681 memcpy(data, &newlabel, sizeof (struct olddisklabel)); 1682 break; 1683 #endif 1684 1685 case DIOCAWEDGE: 1686 case DIOCDWEDGE: 1687 dkw = (void *)data; 1688 1689 /* If the ioctl happens here, the parent is us. */ 1690 (void)strcpy(dkw->dkw_parent, rs->sc_xname); 1691 return cmd == DIOCAWEDGE ? dkwedge_add(dkw) : dkwedge_del(dkw); 1692 1693 case DIOCLWEDGES: 1694 return dkwedge_list(&rs->sc_dkdev, 1695 (struct dkwedge_list *)data, l); 1696 1697 default: 1698 retcode = ENOTTY; 1699 } 1700 return (retcode); 1701 1702 } 1703 1704 1705 /* raidinit -- complete the rest of the initialization for the 1706 RAIDframe device. */ 1707 1708 1709 static void 1710 raidinit(RF_Raid_t *raidPtr) 1711 { 1712 struct cfdata *cf; 1713 struct raid_softc *rs; 1714 int unit; 1715 1716 unit = raidPtr->raidid; 1717 1718 rs = &raid_softc[unit]; 1719 1720 /* XXX should check return code first... */ 1721 rs->sc_flags |= RAIDF_INITED; 1722 1723 /* XXX doesn't check bounds. */ 1724 snprintf(rs->sc_xname, sizeof(rs->sc_xname), "raid%d", unit); 1725 1726 rs->sc_dkdev.dk_name = rs->sc_xname; 1727 1728 /* attach the pseudo device */ 1729 cf = malloc(sizeof(*cf), M_RAIDFRAME, M_WAITOK); 1730 cf->cf_name = raid_cd.cd_name; 1731 cf->cf_atname = raid_cd.cd_name; 1732 cf->cf_unit = unit; 1733 cf->cf_fstate = FSTATE_STAR; 1734 1735 rs->sc_dev = config_attach_pseudo(cf); 1736 1737 if (rs->sc_dev==NULL) { 1738 printf("raid%d: config_attach_pseudo failed\n", 1739 raidPtr->raidid); 1740 } 1741 1742 /* disk_attach actually creates space for the CPU disklabel, among 1743 * other things, so it's critical to call this *BEFORE* we try putzing 1744 * with disklabels. */ 1745 1746 disk_attach(&rs->sc_dkdev); 1747 1748 /* XXX There may be a weird interaction here between this, and 1749 * protectedSectors, as used in RAIDframe. */ 1750 1751 rs->sc_size = raidPtr->totalSectors; 1752 } 1753 #if (RF_INCLUDE_PARITY_DECLUSTERING_DS > 0) 1754 /* wake up the daemon & tell it to get us a spare table 1755 * XXX 1756 * the entries in the queues should be tagged with the raidPtr 1757 * so that in the extremely rare case that two recons happen at once, 1758 * we know for which device were requesting a spare table 1759 * XXX 1760 * 1761 * XXX This code is not currently used. GO 1762 */ 1763 int 1764 rf_GetSpareTableFromDaemon(RF_SparetWait_t *req) 1765 { 1766 int retcode; 1767 1768 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1769 req->next = rf_sparet_wait_queue; 1770 rf_sparet_wait_queue = req; 1771 wakeup(&rf_sparet_wait_queue); 1772 1773 /* mpsleep unlocks the mutex */ 1774 while (!rf_sparet_resp_queue) { 1775 tsleep(&rf_sparet_resp_queue, PRIBIO, 1776 "raidframe getsparetable", 0); 1777 } 1778 req = rf_sparet_resp_queue; 1779 rf_sparet_resp_queue = req->next; 1780 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1781 1782 retcode = req->fcol; 1783 RF_Free(req, sizeof(*req)); /* this is not the same req as we 1784 * alloc'd */ 1785 return (retcode); 1786 } 1787 #endif 1788 1789 /* a wrapper around rf_DoAccess that extracts appropriate info from the 1790 * bp & passes it down. 1791 * any calls originating in the kernel must use non-blocking I/O 1792 * do some extra sanity checking to return "appropriate" error values for 1793 * certain conditions (to make some standard utilities work) 1794 * 1795 * Formerly known as: rf_DoAccessKernel 1796 */ 1797 void 1798 raidstart(RF_Raid_t *raidPtr) 1799 { 1800 RF_SectorCount_t num_blocks, pb, sum; 1801 RF_RaidAddr_t raid_addr; 1802 struct partition *pp; 1803 daddr_t blocknum; 1804 int unit; 1805 struct raid_softc *rs; 1806 int do_async; 1807 struct buf *bp; 1808 int rc; 1809 1810 unit = raidPtr->raidid; 1811 rs = &raid_softc[unit]; 1812 1813 /* quick check to see if anything has died recently */ 1814 RF_LOCK_MUTEX(raidPtr->mutex); 1815 if (raidPtr->numNewFailures > 0) { 1816 RF_UNLOCK_MUTEX(raidPtr->mutex); 1817 rf_update_component_labels(raidPtr, 1818 RF_NORMAL_COMPONENT_UPDATE); 1819 RF_LOCK_MUTEX(raidPtr->mutex); 1820 raidPtr->numNewFailures--; 1821 } 1822 1823 /* Check to see if we're at the limit... */ 1824 while (raidPtr->openings > 0) { 1825 RF_UNLOCK_MUTEX(raidPtr->mutex); 1826 1827 /* get the next item, if any, from the queue */ 1828 if ((bp = BUFQ_GET(rs->buf_queue)) == NULL) { 1829 /* nothing more to do */ 1830 return; 1831 } 1832 1833 /* Ok, for the bp we have here, bp->b_blkno is relative to the 1834 * partition.. Need to make it absolute to the underlying 1835 * device.. */ 1836 1837 blocknum = bp->b_blkno; 1838 if (DISKPART(bp->b_dev) != RAW_PART) { 1839 pp = &rs->sc_dkdev.dk_label->d_partitions[DISKPART(bp->b_dev)]; 1840 blocknum += pp->p_offset; 1841 } 1842 1843 db1_printf(("Blocks: %d, %d\n", (int) bp->b_blkno, 1844 (int) blocknum)); 1845 1846 db1_printf(("bp->b_bcount = %d\n", (int) bp->b_bcount)); 1847 db1_printf(("bp->b_resid = %d\n", (int) bp->b_resid)); 1848 1849 /* *THIS* is where we adjust what block we're going to... 1850 * but DO NOT TOUCH bp->b_blkno!!! */ 1851 raid_addr = blocknum; 1852 1853 num_blocks = bp->b_bcount >> raidPtr->logBytesPerSector; 1854 pb = (bp->b_bcount & raidPtr->sectorMask) ? 1 : 0; 1855 sum = raid_addr + num_blocks + pb; 1856 if (1 || rf_debugKernelAccess) { 1857 db1_printf(("raid_addr=%d sum=%d num_blocks=%d(+%d) (%d)\n", 1858 (int) raid_addr, (int) sum, (int) num_blocks, 1859 (int) pb, (int) bp->b_resid)); 1860 } 1861 if ((sum > raidPtr->totalSectors) || (sum < raid_addr) 1862 || (sum < num_blocks) || (sum < pb)) { 1863 bp->b_error = ENOSPC; 1864 bp->b_flags |= B_ERROR; 1865 bp->b_resid = bp->b_bcount; 1866 biodone(bp); 1867 RF_LOCK_MUTEX(raidPtr->mutex); 1868 continue; 1869 } 1870 /* 1871 * XXX rf_DoAccess() should do this, not just DoAccessKernel() 1872 */ 1873 1874 if (bp->b_bcount & raidPtr->sectorMask) { 1875 bp->b_error = EINVAL; 1876 bp->b_flags |= B_ERROR; 1877 bp->b_resid = bp->b_bcount; 1878 biodone(bp); 1879 RF_LOCK_MUTEX(raidPtr->mutex); 1880 continue; 1881 1882 } 1883 db1_printf(("Calling DoAccess..\n")); 1884 1885 1886 RF_LOCK_MUTEX(raidPtr->mutex); 1887 raidPtr->openings--; 1888 RF_UNLOCK_MUTEX(raidPtr->mutex); 1889 1890 /* 1891 * Everything is async. 1892 */ 1893 do_async = 1; 1894 1895 disk_busy(&rs->sc_dkdev); 1896 1897 /* XXX we're still at splbio() here... do we *really* 1898 need to be? */ 1899 1900 /* don't ever condition on bp->b_flags & B_WRITE. 1901 * always condition on B_READ instead */ 1902 1903 rc = rf_DoAccess(raidPtr, (bp->b_flags & B_READ) ? 1904 RF_IO_TYPE_READ : RF_IO_TYPE_WRITE, 1905 do_async, raid_addr, num_blocks, 1906 bp->b_data, bp, RF_DAG_NONBLOCKING_IO); 1907 1908 if (rc) { 1909 bp->b_error = rc; 1910 bp->b_flags |= B_ERROR; 1911 bp->b_resid = bp->b_bcount; 1912 biodone(bp); 1913 /* continue loop */ 1914 } 1915 1916 RF_LOCK_MUTEX(raidPtr->mutex); 1917 } 1918 RF_UNLOCK_MUTEX(raidPtr->mutex); 1919 } 1920 1921 1922 1923 1924 /* invoke an I/O from kernel mode. Disk queue should be locked upon entry */ 1925 1926 int 1927 rf_DispatchKernelIO(RF_DiskQueue_t *queue, RF_DiskQueueData_t *req) 1928 { 1929 int op = (req->type == RF_IO_TYPE_READ) ? B_READ : B_WRITE; 1930 struct buf *bp; 1931 1932 req->queue = queue; 1933 1934 #if DIAGNOSTIC 1935 if (queue->raidPtr->raidid >= numraid) { 1936 printf("Invalid unit number: %d %d\n", queue->raidPtr->raidid, 1937 numraid); 1938 panic("Invalid Unit number in rf_DispatchKernelIO"); 1939 } 1940 #endif 1941 1942 bp = req->bp; 1943 1944 switch (req->type) { 1945 case RF_IO_TYPE_NOP: /* used primarily to unlock a locked queue */ 1946 /* XXX need to do something extra here.. */ 1947 /* I'm leaving this in, as I've never actually seen it used, 1948 * and I'd like folks to report it... GO */ 1949 printf(("WAKEUP CALLED\n")); 1950 queue->numOutstanding++; 1951 1952 bp->b_flags = 0; 1953 bp->b_private = req; 1954 1955 KernelWakeupFunc(bp); 1956 break; 1957 1958 case RF_IO_TYPE_READ: 1959 case RF_IO_TYPE_WRITE: 1960 #if RF_ACC_TRACE > 0 1961 if (req->tracerec) { 1962 RF_ETIMER_START(req->tracerec->timer); 1963 } 1964 #endif 1965 InitBP(bp, queue->rf_cinfo->ci_vp, 1966 op, queue->rf_cinfo->ci_dev, 1967 req->sectorOffset, req->numSector, 1968 req->buf, KernelWakeupFunc, (void *) req, 1969 queue->raidPtr->logBytesPerSector, req->b_proc); 1970 1971 if (rf_debugKernelAccess) { 1972 db1_printf(("dispatch: bp->b_blkno = %ld\n", 1973 (long) bp->b_blkno)); 1974 } 1975 queue->numOutstanding++; 1976 queue->last_deq_sector = req->sectorOffset; 1977 /* acc wouldn't have been let in if there were any pending 1978 * reqs at any other priority */ 1979 queue->curPriority = req->priority; 1980 1981 db1_printf(("Going for %c to unit %d col %d\n", 1982 req->type, queue->raidPtr->raidid, 1983 queue->col)); 1984 db1_printf(("sector %d count %d (%d bytes) %d\n", 1985 (int) req->sectorOffset, (int) req->numSector, 1986 (int) (req->numSector << 1987 queue->raidPtr->logBytesPerSector), 1988 (int) queue->raidPtr->logBytesPerSector)); 1989 VOP_STRATEGY(bp->b_vp, bp); 1990 1991 break; 1992 1993 default: 1994 panic("bad req->type in rf_DispatchKernelIO"); 1995 } 1996 db1_printf(("Exiting from DispatchKernelIO\n")); 1997 1998 return (0); 1999 } 2000 /* this is the callback function associated with a I/O invoked from 2001 kernel code. 2002 */ 2003 static void 2004 KernelWakeupFunc(struct buf *bp) 2005 { 2006 RF_DiskQueueData_t *req = NULL; 2007 RF_DiskQueue_t *queue; 2008 int s; 2009 2010 s = splbio(); 2011 db1_printf(("recovering the request queue:\n")); 2012 req = bp->b_private; 2013 2014 queue = (RF_DiskQueue_t *) req->queue; 2015 2016 #if RF_ACC_TRACE > 0 2017 if (req->tracerec) { 2018 RF_ETIMER_STOP(req->tracerec->timer); 2019 RF_ETIMER_EVAL(req->tracerec->timer); 2020 RF_LOCK_MUTEX(rf_tracing_mutex); 2021 req->tracerec->diskwait_us += RF_ETIMER_VAL_US(req->tracerec->timer); 2022 req->tracerec->phys_io_us += RF_ETIMER_VAL_US(req->tracerec->timer); 2023 req->tracerec->num_phys_ios++; 2024 RF_UNLOCK_MUTEX(rf_tracing_mutex); 2025 } 2026 #endif 2027 2028 /* XXX Ok, let's get aggressive... If B_ERROR is set, let's go 2029 * ballistic, and mark the component as hosed... */ 2030 2031 if (bp->b_flags & B_ERROR) { 2032 /* Mark the disk as dead */ 2033 /* but only mark it once... */ 2034 /* and only if it wouldn't leave this RAID set 2035 completely broken */ 2036 if (((queue->raidPtr->Disks[queue->col].status == 2037 rf_ds_optimal) || 2038 (queue->raidPtr->Disks[queue->col].status == 2039 rf_ds_used_spare)) && 2040 (queue->raidPtr->numFailures < 2041 queue->raidPtr->Layout.map->faultsTolerated)) { 2042 printf("raid%d: IO Error. Marking %s as failed.\n", 2043 queue->raidPtr->raidid, 2044 queue->raidPtr->Disks[queue->col].devname); 2045 queue->raidPtr->Disks[queue->col].status = 2046 rf_ds_failed; 2047 queue->raidPtr->status = rf_rs_degraded; 2048 queue->raidPtr->numFailures++; 2049 queue->raidPtr->numNewFailures++; 2050 } else { /* Disk is already dead... */ 2051 /* printf("Disk already marked as dead!\n"); */ 2052 } 2053 2054 } 2055 2056 /* Fill in the error value */ 2057 2058 req->error = (bp->b_flags & B_ERROR) ? bp->b_error : 0; 2059 2060 simple_lock(&queue->raidPtr->iodone_lock); 2061 2062 /* Drop this one on the "finished" queue... */ 2063 TAILQ_INSERT_TAIL(&(queue->raidPtr->iodone), req, iodone_entries); 2064 2065 /* Let the raidio thread know there is work to be done. */ 2066 wakeup(&(queue->raidPtr->iodone)); 2067 2068 simple_unlock(&queue->raidPtr->iodone_lock); 2069 2070 splx(s); 2071 } 2072 2073 2074 2075 /* 2076 * initialize a buf structure for doing an I/O in the kernel. 2077 */ 2078 static void 2079 InitBP(struct buf *bp, struct vnode *b_vp, unsigned rw_flag, dev_t dev, 2080 RF_SectorNum_t startSect, RF_SectorCount_t numSect, void *bf, 2081 void (*cbFunc) (struct buf *), void *cbArg, int logBytesPerSector, 2082 struct proc *b_proc) 2083 { 2084 /* bp->b_flags = B_PHYS | rw_flag; */ 2085 bp->b_flags = B_CALL | rw_flag; /* XXX need B_PHYS here too??? */ 2086 bp->b_bcount = numSect << logBytesPerSector; 2087 bp->b_bufsize = bp->b_bcount; 2088 bp->b_error = 0; 2089 bp->b_dev = dev; 2090 bp->b_data = bf; 2091 bp->b_blkno = startSect; 2092 bp->b_resid = bp->b_bcount; /* XXX is this right!??!?!! */ 2093 if (bp->b_bcount == 0) { 2094 panic("bp->b_bcount is zero in InitBP!!"); 2095 } 2096 bp->b_proc = b_proc; 2097 bp->b_iodone = cbFunc; 2098 bp->b_private = cbArg; 2099 bp->b_vp = b_vp; 2100 if ((bp->b_flags & B_READ) == 0) { 2101 bp->b_vp->v_numoutput++; 2102 } 2103 2104 } 2105 2106 static void 2107 raidgetdefaultlabel(RF_Raid_t *raidPtr, struct raid_softc *rs, 2108 struct disklabel *lp) 2109 { 2110 memset(lp, 0, sizeof(*lp)); 2111 2112 /* fabricate a label... */ 2113 lp->d_secperunit = raidPtr->totalSectors; 2114 lp->d_secsize = raidPtr->bytesPerSector; 2115 lp->d_nsectors = raidPtr->Layout.dataSectorsPerStripe; 2116 lp->d_ntracks = 4 * raidPtr->numCol; 2117 lp->d_ncylinders = raidPtr->totalSectors / 2118 (lp->d_nsectors * lp->d_ntracks); 2119 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 2120 2121 strncpy(lp->d_typename, "raid", sizeof(lp->d_typename)); 2122 lp->d_type = DTYPE_RAID; 2123 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2124 lp->d_rpm = 3600; 2125 lp->d_interleave = 1; 2126 lp->d_flags = 0; 2127 2128 lp->d_partitions[RAW_PART].p_offset = 0; 2129 lp->d_partitions[RAW_PART].p_size = raidPtr->totalSectors; 2130 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2131 lp->d_npartitions = RAW_PART + 1; 2132 2133 lp->d_magic = DISKMAGIC; 2134 lp->d_magic2 = DISKMAGIC; 2135 lp->d_checksum = dkcksum(rs->sc_dkdev.dk_label); 2136 2137 } 2138 /* 2139 * Read the disklabel from the raid device. If one is not present, fake one 2140 * up. 2141 */ 2142 static void 2143 raidgetdisklabel(dev_t dev) 2144 { 2145 int unit = raidunit(dev); 2146 struct raid_softc *rs = &raid_softc[unit]; 2147 const char *errstring; 2148 struct disklabel *lp = rs->sc_dkdev.dk_label; 2149 struct cpu_disklabel *clp = rs->sc_dkdev.dk_cpulabel; 2150 RF_Raid_t *raidPtr; 2151 2152 db1_printf(("Getting the disklabel...\n")); 2153 2154 memset(clp, 0, sizeof(*clp)); 2155 2156 raidPtr = raidPtrs[unit]; 2157 2158 raidgetdefaultlabel(raidPtr, rs, lp); 2159 2160 /* 2161 * Call the generic disklabel extraction routine. 2162 */ 2163 errstring = readdisklabel(RAIDLABELDEV(dev), raidstrategy, 2164 rs->sc_dkdev.dk_label, rs->sc_dkdev.dk_cpulabel); 2165 if (errstring) 2166 raidmakedisklabel(rs); 2167 else { 2168 int i; 2169 struct partition *pp; 2170 2171 /* 2172 * Sanity check whether the found disklabel is valid. 2173 * 2174 * This is necessary since total size of the raid device 2175 * may vary when an interleave is changed even though exactly 2176 * same components are used, and old disklabel may used 2177 * if that is found. 2178 */ 2179 if (lp->d_secperunit != rs->sc_size) 2180 printf("raid%d: WARNING: %s: " 2181 "total sector size in disklabel (%d) != " 2182 "the size of raid (%ld)\n", unit, rs->sc_xname, 2183 lp->d_secperunit, (long) rs->sc_size); 2184 for (i = 0; i < lp->d_npartitions; i++) { 2185 pp = &lp->d_partitions[i]; 2186 if (pp->p_offset + pp->p_size > rs->sc_size) 2187 printf("raid%d: WARNING: %s: end of partition `%c' " 2188 "exceeds the size of raid (%ld)\n", 2189 unit, rs->sc_xname, 'a' + i, (long) rs->sc_size); 2190 } 2191 } 2192 2193 } 2194 /* 2195 * Take care of things one might want to take care of in the event 2196 * that a disklabel isn't present. 2197 */ 2198 static void 2199 raidmakedisklabel(struct raid_softc *rs) 2200 { 2201 struct disklabel *lp = rs->sc_dkdev.dk_label; 2202 db1_printf(("Making a label..\n")); 2203 2204 /* 2205 * For historical reasons, if there's no disklabel present 2206 * the raw partition must be marked FS_BSDFFS. 2207 */ 2208 2209 lp->d_partitions[RAW_PART].p_fstype = FS_BSDFFS; 2210 2211 strncpy(lp->d_packname, "default label", sizeof(lp->d_packname)); 2212 2213 lp->d_checksum = dkcksum(lp); 2214 } 2215 /* 2216 * Wait interruptibly for an exclusive lock. 2217 * 2218 * XXX 2219 * Several drivers do this; it should be abstracted and made MP-safe. 2220 * (Hmm... where have we seen this warning before :-> GO ) 2221 */ 2222 static int 2223 raidlock(struct raid_softc *rs) 2224 { 2225 int error; 2226 2227 while ((rs->sc_flags & RAIDF_LOCKED) != 0) { 2228 rs->sc_flags |= RAIDF_WANTED; 2229 if ((error = 2230 tsleep(rs, PRIBIO | PCATCH, "raidlck", 0)) != 0) 2231 return (error); 2232 } 2233 rs->sc_flags |= RAIDF_LOCKED; 2234 return (0); 2235 } 2236 /* 2237 * Unlock and wake up any waiters. 2238 */ 2239 static void 2240 raidunlock(struct raid_softc *rs) 2241 { 2242 2243 rs->sc_flags &= ~RAIDF_LOCKED; 2244 if ((rs->sc_flags & RAIDF_WANTED) != 0) { 2245 rs->sc_flags &= ~RAIDF_WANTED; 2246 wakeup(rs); 2247 } 2248 } 2249 2250 2251 #define RF_COMPONENT_INFO_OFFSET 16384 /* bytes */ 2252 #define RF_COMPONENT_INFO_SIZE 1024 /* bytes */ 2253 2254 int 2255 raidmarkclean(dev_t dev, struct vnode *b_vp, int mod_counter) 2256 { 2257 RF_ComponentLabel_t clabel; 2258 raidread_component_label(dev, b_vp, &clabel); 2259 clabel.mod_counter = mod_counter; 2260 clabel.clean = RF_RAID_CLEAN; 2261 raidwrite_component_label(dev, b_vp, &clabel); 2262 return(0); 2263 } 2264 2265 2266 int 2267 raidmarkdirty(dev_t dev, struct vnode *b_vp, int mod_counter) 2268 { 2269 RF_ComponentLabel_t clabel; 2270 raidread_component_label(dev, b_vp, &clabel); 2271 clabel.mod_counter = mod_counter; 2272 clabel.clean = RF_RAID_DIRTY; 2273 raidwrite_component_label(dev, b_vp, &clabel); 2274 return(0); 2275 } 2276 2277 /* ARGSUSED */ 2278 int 2279 raidread_component_label(dev_t dev, struct vnode *b_vp, 2280 RF_ComponentLabel_t *clabel) 2281 { 2282 struct buf *bp; 2283 const struct bdevsw *bdev; 2284 int error; 2285 2286 /* XXX should probably ensure that we don't try to do this if 2287 someone has changed rf_protected_sectors. */ 2288 2289 if (b_vp == NULL) { 2290 /* For whatever reason, this component is not valid. 2291 Don't try to read a component label from it. */ 2292 return(EINVAL); 2293 } 2294 2295 /* get a block of the appropriate size... */ 2296 bp = geteblk((int)RF_COMPONENT_INFO_SIZE); 2297 bp->b_dev = dev; 2298 2299 /* get our ducks in a row for the read */ 2300 bp->b_blkno = RF_COMPONENT_INFO_OFFSET / DEV_BSIZE; 2301 bp->b_bcount = RF_COMPONENT_INFO_SIZE; 2302 bp->b_flags |= B_READ; 2303 bp->b_resid = RF_COMPONENT_INFO_SIZE / DEV_BSIZE; 2304 2305 bdev = bdevsw_lookup(bp->b_dev); 2306 if (bdev == NULL) 2307 return (ENXIO); 2308 (*bdev->d_strategy)(bp); 2309 2310 error = biowait(bp); 2311 2312 if (!error) { 2313 memcpy(clabel, bp->b_data, 2314 sizeof(RF_ComponentLabel_t)); 2315 } 2316 2317 brelse(bp); 2318 return(error); 2319 } 2320 /* ARGSUSED */ 2321 int 2322 raidwrite_component_label(dev_t dev, struct vnode *b_vp, 2323 RF_ComponentLabel_t *clabel) 2324 { 2325 struct buf *bp; 2326 const struct bdevsw *bdev; 2327 int error; 2328 2329 /* get a block of the appropriate size... */ 2330 bp = geteblk((int)RF_COMPONENT_INFO_SIZE); 2331 bp->b_dev = dev; 2332 2333 /* get our ducks in a row for the write */ 2334 bp->b_blkno = RF_COMPONENT_INFO_OFFSET / DEV_BSIZE; 2335 bp->b_bcount = RF_COMPONENT_INFO_SIZE; 2336 bp->b_flags |= B_WRITE; 2337 bp->b_resid = RF_COMPONENT_INFO_SIZE / DEV_BSIZE; 2338 2339 memset(bp->b_data, 0, RF_COMPONENT_INFO_SIZE ); 2340 2341 memcpy(bp->b_data, clabel, sizeof(RF_ComponentLabel_t)); 2342 2343 bdev = bdevsw_lookup(bp->b_dev); 2344 if (bdev == NULL) 2345 return (ENXIO); 2346 (*bdev->d_strategy)(bp); 2347 error = biowait(bp); 2348 brelse(bp); 2349 if (error) { 2350 #if 1 2351 printf("Failed to write RAID component info!\n"); 2352 #endif 2353 } 2354 2355 return(error); 2356 } 2357 2358 void 2359 rf_markalldirty(RF_Raid_t *raidPtr) 2360 { 2361 RF_ComponentLabel_t clabel; 2362 int sparecol; 2363 int c; 2364 int j; 2365 int scol = -1; 2366 2367 raidPtr->mod_counter++; 2368 for (c = 0; c < raidPtr->numCol; c++) { 2369 /* we don't want to touch (at all) a disk that has 2370 failed */ 2371 if (!RF_DEAD_DISK(raidPtr->Disks[c].status)) { 2372 raidread_component_label( 2373 raidPtr->Disks[c].dev, 2374 raidPtr->raid_cinfo[c].ci_vp, 2375 &clabel); 2376 if (clabel.status == rf_ds_spared) { 2377 /* XXX do something special... 2378 but whatever you do, don't 2379 try to access it!! */ 2380 } else { 2381 raidmarkdirty( 2382 raidPtr->Disks[c].dev, 2383 raidPtr->raid_cinfo[c].ci_vp, 2384 raidPtr->mod_counter); 2385 } 2386 } 2387 } 2388 2389 for( c = 0; c < raidPtr->numSpare ; c++) { 2390 sparecol = raidPtr->numCol + c; 2391 if (raidPtr->Disks[sparecol].status == rf_ds_used_spare) { 2392 /* 2393 2394 we claim this disk is "optimal" if it's 2395 rf_ds_used_spare, as that means it should be 2396 directly substitutable for the disk it replaced. 2397 We note that too... 2398 2399 */ 2400 2401 for(j=0;j<raidPtr->numCol;j++) { 2402 if (raidPtr->Disks[j].spareCol == sparecol) { 2403 scol = j; 2404 break; 2405 } 2406 } 2407 2408 raidread_component_label( 2409 raidPtr->Disks[sparecol].dev, 2410 raidPtr->raid_cinfo[sparecol].ci_vp, 2411 &clabel); 2412 /* make sure status is noted */ 2413 2414 raid_init_component_label(raidPtr, &clabel); 2415 2416 clabel.row = 0; 2417 clabel.column = scol; 2418 /* Note: we *don't* change status from rf_ds_used_spare 2419 to rf_ds_optimal */ 2420 /* clabel.status = rf_ds_optimal; */ 2421 2422 raidmarkdirty(raidPtr->Disks[sparecol].dev, 2423 raidPtr->raid_cinfo[sparecol].ci_vp, 2424 raidPtr->mod_counter); 2425 } 2426 } 2427 } 2428 2429 2430 void 2431 rf_update_component_labels(RF_Raid_t *raidPtr, int final) 2432 { 2433 RF_ComponentLabel_t clabel; 2434 int sparecol; 2435 int c; 2436 int j; 2437 int scol; 2438 2439 scol = -1; 2440 2441 /* XXX should do extra checks to make sure things really are clean, 2442 rather than blindly setting the clean bit... */ 2443 2444 raidPtr->mod_counter++; 2445 2446 for (c = 0; c < raidPtr->numCol; c++) { 2447 if (raidPtr->Disks[c].status == rf_ds_optimal) { 2448 raidread_component_label( 2449 raidPtr->Disks[c].dev, 2450 raidPtr->raid_cinfo[c].ci_vp, 2451 &clabel); 2452 /* make sure status is noted */ 2453 clabel.status = rf_ds_optimal; 2454 2455 /* bump the counter */ 2456 clabel.mod_counter = raidPtr->mod_counter; 2457 2458 /* note what unit we are configured as */ 2459 clabel.last_unit = raidPtr->raidid; 2460 2461 raidwrite_component_label( 2462 raidPtr->Disks[c].dev, 2463 raidPtr->raid_cinfo[c].ci_vp, 2464 &clabel); 2465 if (final == RF_FINAL_COMPONENT_UPDATE) { 2466 if (raidPtr->parity_good == RF_RAID_CLEAN) { 2467 raidmarkclean( 2468 raidPtr->Disks[c].dev, 2469 raidPtr->raid_cinfo[c].ci_vp, 2470 raidPtr->mod_counter); 2471 } 2472 } 2473 } 2474 /* else we don't touch it.. */ 2475 } 2476 2477 for( c = 0; c < raidPtr->numSpare ; c++) { 2478 sparecol = raidPtr->numCol + c; 2479 /* Need to ensure that the reconstruct actually completed! */ 2480 if (raidPtr->Disks[sparecol].status == rf_ds_used_spare) { 2481 /* 2482 2483 we claim this disk is "optimal" if it's 2484 rf_ds_used_spare, as that means it should be 2485 directly substitutable for the disk it replaced. 2486 We note that too... 2487 2488 */ 2489 2490 for(j=0;j<raidPtr->numCol;j++) { 2491 if (raidPtr->Disks[j].spareCol == sparecol) { 2492 scol = j; 2493 break; 2494 } 2495 } 2496 2497 /* XXX shouldn't *really* need this... */ 2498 raidread_component_label( 2499 raidPtr->Disks[sparecol].dev, 2500 raidPtr->raid_cinfo[sparecol].ci_vp, 2501 &clabel); 2502 /* make sure status is noted */ 2503 2504 raid_init_component_label(raidPtr, &clabel); 2505 2506 clabel.mod_counter = raidPtr->mod_counter; 2507 clabel.column = scol; 2508 clabel.status = rf_ds_optimal; 2509 clabel.last_unit = raidPtr->raidid; 2510 2511 raidwrite_component_label( 2512 raidPtr->Disks[sparecol].dev, 2513 raidPtr->raid_cinfo[sparecol].ci_vp, 2514 &clabel); 2515 if (final == RF_FINAL_COMPONENT_UPDATE) { 2516 if (raidPtr->parity_good == RF_RAID_CLEAN) { 2517 raidmarkclean( raidPtr->Disks[sparecol].dev, 2518 raidPtr->raid_cinfo[sparecol].ci_vp, 2519 raidPtr->mod_counter); 2520 } 2521 } 2522 } 2523 } 2524 } 2525 2526 void 2527 rf_close_component(RF_Raid_t *raidPtr, struct vnode *vp, int auto_configured) 2528 { 2529 struct lwp *l; 2530 2531 l = curlwp; 2532 2533 if (vp != NULL) { 2534 if (auto_configured == 1) { 2535 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 2536 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED, 0); 2537 vput(vp); 2538 2539 } else { 2540 (void) vn_close(vp, FREAD | FWRITE, l->l_cred, l); 2541 } 2542 } 2543 } 2544 2545 2546 void 2547 rf_UnconfigureVnodes(RF_Raid_t *raidPtr) 2548 { 2549 int r,c; 2550 struct vnode *vp; 2551 int acd; 2552 2553 2554 /* We take this opportunity to close the vnodes like we should.. */ 2555 2556 for (c = 0; c < raidPtr->numCol; c++) { 2557 vp = raidPtr->raid_cinfo[c].ci_vp; 2558 acd = raidPtr->Disks[c].auto_configured; 2559 rf_close_component(raidPtr, vp, acd); 2560 raidPtr->raid_cinfo[c].ci_vp = NULL; 2561 raidPtr->Disks[c].auto_configured = 0; 2562 } 2563 2564 for (r = 0; r < raidPtr->numSpare; r++) { 2565 vp = raidPtr->raid_cinfo[raidPtr->numCol + r].ci_vp; 2566 acd = raidPtr->Disks[raidPtr->numCol + r].auto_configured; 2567 rf_close_component(raidPtr, vp, acd); 2568 raidPtr->raid_cinfo[raidPtr->numCol + r].ci_vp = NULL; 2569 raidPtr->Disks[raidPtr->numCol + r].auto_configured = 0; 2570 } 2571 } 2572 2573 2574 void 2575 rf_ReconThread(struct rf_recon_req *req) 2576 { 2577 int s; 2578 RF_Raid_t *raidPtr; 2579 2580 s = splbio(); 2581 raidPtr = (RF_Raid_t *) req->raidPtr; 2582 raidPtr->recon_in_progress = 1; 2583 2584 rf_FailDisk((RF_Raid_t *) req->raidPtr, req->col, 2585 ((req->flags & RF_FDFLAGS_RECON) ? 1 : 0)); 2586 2587 RF_Free(req, sizeof(*req)); 2588 2589 raidPtr->recon_in_progress = 0; 2590 splx(s); 2591 2592 /* That's all... */ 2593 kthread_exit(0); /* does not return */ 2594 } 2595 2596 void 2597 rf_RewriteParityThread(RF_Raid_t *raidPtr) 2598 { 2599 int retcode; 2600 int s; 2601 2602 raidPtr->parity_rewrite_stripes_done = 0; 2603 raidPtr->parity_rewrite_in_progress = 1; 2604 s = splbio(); 2605 retcode = rf_RewriteParity(raidPtr); 2606 splx(s); 2607 if (retcode) { 2608 printf("raid%d: Error re-writing parity!\n",raidPtr->raidid); 2609 } else { 2610 /* set the clean bit! If we shutdown correctly, 2611 the clean bit on each component label will get 2612 set */ 2613 raidPtr->parity_good = RF_RAID_CLEAN; 2614 } 2615 raidPtr->parity_rewrite_in_progress = 0; 2616 2617 /* Anyone waiting for us to stop? If so, inform them... */ 2618 if (raidPtr->waitShutdown) { 2619 wakeup(&raidPtr->parity_rewrite_in_progress); 2620 } 2621 2622 /* That's all... */ 2623 kthread_exit(0); /* does not return */ 2624 } 2625 2626 2627 void 2628 rf_CopybackThread(RF_Raid_t *raidPtr) 2629 { 2630 int s; 2631 2632 raidPtr->copyback_in_progress = 1; 2633 s = splbio(); 2634 rf_CopybackReconstructedData(raidPtr); 2635 splx(s); 2636 raidPtr->copyback_in_progress = 0; 2637 2638 /* That's all... */ 2639 kthread_exit(0); /* does not return */ 2640 } 2641 2642 2643 void 2644 rf_ReconstructInPlaceThread(struct rf_recon_req *req) 2645 { 2646 int s; 2647 RF_Raid_t *raidPtr; 2648 2649 s = splbio(); 2650 raidPtr = req->raidPtr; 2651 raidPtr->recon_in_progress = 1; 2652 rf_ReconstructInPlace(raidPtr, req->col); 2653 RF_Free(req, sizeof(*req)); 2654 raidPtr->recon_in_progress = 0; 2655 splx(s); 2656 2657 /* That's all... */ 2658 kthread_exit(0); /* does not return */ 2659 } 2660 2661 static RF_AutoConfig_t * 2662 rf_get_component(RF_AutoConfig_t *ac_list, dev_t dev, struct vnode *vp, 2663 const char *cname, RF_SectorCount_t size) 2664 { 2665 int good_one = 0; 2666 RF_ComponentLabel_t *clabel; 2667 RF_AutoConfig_t *ac; 2668 2669 clabel = malloc(sizeof(RF_ComponentLabel_t), M_RAIDFRAME, M_NOWAIT); 2670 if (clabel == NULL) { 2671 oomem: 2672 while(ac_list) { 2673 ac = ac_list; 2674 if (ac->clabel) 2675 free(ac->clabel, M_RAIDFRAME); 2676 ac_list = ac_list->next; 2677 free(ac, M_RAIDFRAME); 2678 } 2679 printf("RAID auto config: out of memory!\n"); 2680 return NULL; /* XXX probably should panic? */ 2681 } 2682 2683 if (!raidread_component_label(dev, vp, clabel)) { 2684 /* Got the label. Does it look reasonable? */ 2685 if (rf_reasonable_label(clabel) && 2686 (clabel->partitionSize <= size)) { 2687 #ifdef DEBUG 2688 printf("Component on: %s: %llu\n", 2689 cname, (unsigned long long)size); 2690 rf_print_component_label(clabel); 2691 #endif 2692 /* if it's reasonable, add it, else ignore it. */ 2693 ac = malloc(sizeof(RF_AutoConfig_t), M_RAIDFRAME, 2694 M_NOWAIT); 2695 if (ac == NULL) { 2696 free(clabel, M_RAIDFRAME); 2697 goto oomem; 2698 } 2699 strlcpy(ac->devname, cname, sizeof(ac->devname)); 2700 ac->dev = dev; 2701 ac->vp = vp; 2702 ac->clabel = clabel; 2703 ac->next = ac_list; 2704 ac_list = ac; 2705 good_one = 1; 2706 } 2707 } 2708 if (!good_one) { 2709 /* cleanup */ 2710 free(clabel, M_RAIDFRAME); 2711 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 2712 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED, 0); 2713 vput(vp); 2714 } 2715 return ac_list; 2716 } 2717 2718 RF_AutoConfig_t * 2719 rf_find_raid_components() 2720 { 2721 struct vnode *vp; 2722 struct disklabel label; 2723 struct device *dv; 2724 dev_t dev; 2725 int bmajor, bminor, wedge; 2726 int error; 2727 int i; 2728 RF_AutoConfig_t *ac_list; 2729 2730 2731 /* initialize the AutoConfig list */ 2732 ac_list = NULL; 2733 2734 /* we begin by trolling through *all* the devices on the system */ 2735 2736 for (dv = alldevs.tqh_first; dv != NULL; 2737 dv = dv->dv_list.tqe_next) { 2738 2739 /* we are only interested in disks... */ 2740 if (device_class(dv) != DV_DISK) 2741 continue; 2742 2743 /* we don't care about floppies... */ 2744 if (device_is_a(dv, "fd")) { 2745 continue; 2746 } 2747 2748 /* we don't care about CD's... */ 2749 if (device_is_a(dv, "cd")) { 2750 continue; 2751 } 2752 2753 /* hdfd is the Atari/Hades floppy driver */ 2754 if (device_is_a(dv, "hdfd")) { 2755 continue; 2756 } 2757 2758 /* fdisa is the Atari/Milan floppy driver */ 2759 if (device_is_a(dv, "fdisa")) { 2760 continue; 2761 } 2762 2763 /* need to find the device_name_to_block_device_major stuff */ 2764 bmajor = devsw_name2blk(dv->dv_xname, NULL, 0); 2765 2766 /* get a vnode for the raw partition of this disk */ 2767 2768 wedge = device_is_a(dv, "dk"); 2769 bminor = minor(device_unit(dv)); 2770 dev = wedge ? makedev(bmajor, bminor) : 2771 MAKEDISKDEV(bmajor, bminor, RAW_PART); 2772 if (bdevvp(dev, &vp)) 2773 panic("RAID can't alloc vnode"); 2774 2775 error = VOP_OPEN(vp, FREAD, NOCRED, 0); 2776 2777 if (error) { 2778 /* "Who cares." Continue looking 2779 for something that exists*/ 2780 vput(vp); 2781 continue; 2782 } 2783 2784 if (wedge) { 2785 struct dkwedge_info dkw; 2786 error = VOP_IOCTL(vp, DIOCGWEDGEINFO, &dkw, FREAD, 2787 NOCRED, 0); 2788 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 2789 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED, 0); 2790 vput(vp); 2791 if (error) { 2792 printf("RAIDframe: can't get wedge info for " 2793 "dev %s (%d)\n", dv->dv_xname, error); 2794 continue; 2795 } 2796 2797 if (strcmp(dkw.dkw_ptype, DKW_PTYPE_RAIDFRAME) != 0) 2798 continue; 2799 2800 ac_list = rf_get_component(ac_list, dev, vp, 2801 dv->dv_xname, dkw.dkw_size); 2802 continue; 2803 } 2804 2805 /* Ok, the disk exists. Go get the disklabel. */ 2806 error = VOP_IOCTL(vp, DIOCGDINFO, &label, FREAD, NOCRED, 0); 2807 if (error) { 2808 /* 2809 * XXX can't happen - open() would 2810 * have errored out (or faked up one) 2811 */ 2812 if (error != ENOTTY) 2813 printf("RAIDframe: can't get label for dev " 2814 "%s (%d)\n", dv->dv_xname, error); 2815 } 2816 2817 /* don't need this any more. We'll allocate it again 2818 a little later if we really do... */ 2819 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 2820 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED, 0); 2821 vput(vp); 2822 2823 if (error) 2824 continue; 2825 2826 for (i = 0; i < label.d_npartitions; i++) { 2827 char cname[sizeof(ac_list->devname)]; 2828 2829 /* We only support partitions marked as RAID */ 2830 if (label.d_partitions[i].p_fstype != FS_RAID) 2831 continue; 2832 2833 dev = MAKEDISKDEV(bmajor, device_unit(dv), i); 2834 if (bdevvp(dev, &vp)) 2835 panic("RAID can't alloc vnode"); 2836 2837 error = VOP_OPEN(vp, FREAD, NOCRED, 0); 2838 if (error) { 2839 /* Whatever... */ 2840 vput(vp); 2841 continue; 2842 } 2843 snprintf(cname, sizeof(cname), "%s%c", 2844 dv->dv_xname, 'a' + i); 2845 ac_list = rf_get_component(ac_list, dev, vp, cname, 2846 label.d_partitions[i].p_size); 2847 } 2848 } 2849 return ac_list; 2850 } 2851 2852 2853 static int 2854 rf_reasonable_label(RF_ComponentLabel_t *clabel) 2855 { 2856 2857 if (((clabel->version==RF_COMPONENT_LABEL_VERSION_1) || 2858 (clabel->version==RF_COMPONENT_LABEL_VERSION)) && 2859 ((clabel->clean == RF_RAID_CLEAN) || 2860 (clabel->clean == RF_RAID_DIRTY)) && 2861 clabel->row >=0 && 2862 clabel->column >= 0 && 2863 clabel->num_rows > 0 && 2864 clabel->num_columns > 0 && 2865 clabel->row < clabel->num_rows && 2866 clabel->column < clabel->num_columns && 2867 clabel->blockSize > 0 && 2868 clabel->numBlocks > 0) { 2869 /* label looks reasonable enough... */ 2870 return(1); 2871 } 2872 return(0); 2873 } 2874 2875 2876 #ifdef DEBUG 2877 void 2878 rf_print_component_label(RF_ComponentLabel_t *clabel) 2879 { 2880 printf(" Row: %d Column: %d Num Rows: %d Num Columns: %d\n", 2881 clabel->row, clabel->column, 2882 clabel->num_rows, clabel->num_columns); 2883 printf(" Version: %d Serial Number: %d Mod Counter: %d\n", 2884 clabel->version, clabel->serial_number, 2885 clabel->mod_counter); 2886 printf(" Clean: %s Status: %d\n", 2887 clabel->clean ? "Yes" : "No", clabel->status ); 2888 printf(" sectPerSU: %d SUsPerPU: %d SUsPerRU: %d\n", 2889 clabel->sectPerSU, clabel->SUsPerPU, clabel->SUsPerRU); 2890 printf(" RAID Level: %c blocksize: %d numBlocks: %d\n", 2891 (char) clabel->parityConfig, clabel->blockSize, 2892 clabel->numBlocks); 2893 printf(" Autoconfig: %s\n", clabel->autoconfigure ? "Yes" : "No" ); 2894 printf(" Contains root partition: %s\n", 2895 clabel->root_partition ? "Yes" : "No" ); 2896 printf(" Last configured as: raid%d\n", clabel->last_unit ); 2897 #if 0 2898 printf(" Config order: %d\n", clabel->config_order); 2899 #endif 2900 2901 } 2902 #endif 2903 2904 RF_ConfigSet_t * 2905 rf_create_auto_sets(RF_AutoConfig_t *ac_list) 2906 { 2907 RF_AutoConfig_t *ac; 2908 RF_ConfigSet_t *config_sets; 2909 RF_ConfigSet_t *cset; 2910 RF_AutoConfig_t *ac_next; 2911 2912 2913 config_sets = NULL; 2914 2915 /* Go through the AutoConfig list, and figure out which components 2916 belong to what sets. */ 2917 ac = ac_list; 2918 while(ac!=NULL) { 2919 /* we're going to putz with ac->next, so save it here 2920 for use at the end of the loop */ 2921 ac_next = ac->next; 2922 2923 if (config_sets == NULL) { 2924 /* will need at least this one... */ 2925 config_sets = (RF_ConfigSet_t *) 2926 malloc(sizeof(RF_ConfigSet_t), 2927 M_RAIDFRAME, M_NOWAIT); 2928 if (config_sets == NULL) { 2929 panic("rf_create_auto_sets: No memory!"); 2930 } 2931 /* this one is easy :) */ 2932 config_sets->ac = ac; 2933 config_sets->next = NULL; 2934 config_sets->rootable = 0; 2935 ac->next = NULL; 2936 } else { 2937 /* which set does this component fit into? */ 2938 cset = config_sets; 2939 while(cset!=NULL) { 2940 if (rf_does_it_fit(cset, ac)) { 2941 /* looks like it matches... */ 2942 ac->next = cset->ac; 2943 cset->ac = ac; 2944 break; 2945 } 2946 cset = cset->next; 2947 } 2948 if (cset==NULL) { 2949 /* didn't find a match above... new set..*/ 2950 cset = (RF_ConfigSet_t *) 2951 malloc(sizeof(RF_ConfigSet_t), 2952 M_RAIDFRAME, M_NOWAIT); 2953 if (cset == NULL) { 2954 panic("rf_create_auto_sets: No memory!"); 2955 } 2956 cset->ac = ac; 2957 ac->next = NULL; 2958 cset->next = config_sets; 2959 cset->rootable = 0; 2960 config_sets = cset; 2961 } 2962 } 2963 ac = ac_next; 2964 } 2965 2966 2967 return(config_sets); 2968 } 2969 2970 static int 2971 rf_does_it_fit(RF_ConfigSet_t *cset, RF_AutoConfig_t *ac) 2972 { 2973 RF_ComponentLabel_t *clabel1, *clabel2; 2974 2975 /* If this one matches the *first* one in the set, that's good 2976 enough, since the other members of the set would have been 2977 through here too... */ 2978 /* note that we are not checking partitionSize here.. 2979 2980 Note that we are also not checking the mod_counters here. 2981 If everything else matches execpt the mod_counter, that's 2982 good enough for this test. We will deal with the mod_counters 2983 a little later in the autoconfiguration process. 2984 2985 (clabel1->mod_counter == clabel2->mod_counter) && 2986 2987 The reason we don't check for this is that failed disks 2988 will have lower modification counts. If those disks are 2989 not added to the set they used to belong to, then they will 2990 form their own set, which may result in 2 different sets, 2991 for example, competing to be configured at raid0, and 2992 perhaps competing to be the root filesystem set. If the 2993 wrong ones get configured, or both attempt to become /, 2994 weird behaviour and or serious lossage will occur. Thus we 2995 need to bring them into the fold here, and kick them out at 2996 a later point. 2997 2998 */ 2999 3000 clabel1 = cset->ac->clabel; 3001 clabel2 = ac->clabel; 3002 if ((clabel1->version == clabel2->version) && 3003 (clabel1->serial_number == clabel2->serial_number) && 3004 (clabel1->num_rows == clabel2->num_rows) && 3005 (clabel1->num_columns == clabel2->num_columns) && 3006 (clabel1->sectPerSU == clabel2->sectPerSU) && 3007 (clabel1->SUsPerPU == clabel2->SUsPerPU) && 3008 (clabel1->SUsPerRU == clabel2->SUsPerRU) && 3009 (clabel1->parityConfig == clabel2->parityConfig) && 3010 (clabel1->maxOutstanding == clabel2->maxOutstanding) && 3011 (clabel1->blockSize == clabel2->blockSize) && 3012 (clabel1->numBlocks == clabel2->numBlocks) && 3013 (clabel1->autoconfigure == clabel2->autoconfigure) && 3014 (clabel1->root_partition == clabel2->root_partition) && 3015 (clabel1->last_unit == clabel2->last_unit) && 3016 (clabel1->config_order == clabel2->config_order)) { 3017 /* if it get's here, it almost *has* to be a match */ 3018 } else { 3019 /* it's not consistent with somebody in the set.. 3020 punt */ 3021 return(0); 3022 } 3023 /* all was fine.. it must fit... */ 3024 return(1); 3025 } 3026 3027 int 3028 rf_have_enough_components(RF_ConfigSet_t *cset) 3029 { 3030 RF_AutoConfig_t *ac; 3031 RF_AutoConfig_t *auto_config; 3032 RF_ComponentLabel_t *clabel; 3033 int c; 3034 int num_cols; 3035 int num_missing; 3036 int mod_counter; 3037 int mod_counter_found; 3038 int even_pair_failed; 3039 char parity_type; 3040 3041 3042 /* check to see that we have enough 'live' components 3043 of this set. If so, we can configure it if necessary */ 3044 3045 num_cols = cset->ac->clabel->num_columns; 3046 parity_type = cset->ac->clabel->parityConfig; 3047 3048 /* XXX Check for duplicate components!?!?!? */ 3049 3050 /* Determine what the mod_counter is supposed to be for this set. */ 3051 3052 mod_counter_found = 0; 3053 mod_counter = 0; 3054 ac = cset->ac; 3055 while(ac!=NULL) { 3056 if (mod_counter_found==0) { 3057 mod_counter = ac->clabel->mod_counter; 3058 mod_counter_found = 1; 3059 } else { 3060 if (ac->clabel->mod_counter > mod_counter) { 3061 mod_counter = ac->clabel->mod_counter; 3062 } 3063 } 3064 ac = ac->next; 3065 } 3066 3067 num_missing = 0; 3068 auto_config = cset->ac; 3069 3070 even_pair_failed = 0; 3071 for(c=0; c<num_cols; c++) { 3072 ac = auto_config; 3073 while(ac!=NULL) { 3074 if ((ac->clabel->column == c) && 3075 (ac->clabel->mod_counter == mod_counter)) { 3076 /* it's this one... */ 3077 #ifdef DEBUG 3078 printf("Found: %s at %d\n", 3079 ac->devname,c); 3080 #endif 3081 break; 3082 } 3083 ac=ac->next; 3084 } 3085 if (ac==NULL) { 3086 /* Didn't find one here! */ 3087 /* special case for RAID 1, especially 3088 where there are more than 2 3089 components (where RAIDframe treats 3090 things a little differently :( ) */ 3091 if (parity_type == '1') { 3092 if (c%2 == 0) { /* even component */ 3093 even_pair_failed = 1; 3094 } else { /* odd component. If 3095 we're failed, and 3096 so is the even 3097 component, it's 3098 "Good Night, Charlie" */ 3099 if (even_pair_failed == 1) { 3100 return(0); 3101 } 3102 } 3103 } else { 3104 /* normal accounting */ 3105 num_missing++; 3106 } 3107 } 3108 if ((parity_type == '1') && (c%2 == 1)) { 3109 /* Just did an even component, and we didn't 3110 bail.. reset the even_pair_failed flag, 3111 and go on to the next component.... */ 3112 even_pair_failed = 0; 3113 } 3114 } 3115 3116 clabel = cset->ac->clabel; 3117 3118 if (((clabel->parityConfig == '0') && (num_missing > 0)) || 3119 ((clabel->parityConfig == '4') && (num_missing > 1)) || 3120 ((clabel->parityConfig == '5') && (num_missing > 1))) { 3121 /* XXX this needs to be made *much* more general */ 3122 /* Too many failures */ 3123 return(0); 3124 } 3125 /* otherwise, all is well, and we've got enough to take a kick 3126 at autoconfiguring this set */ 3127 return(1); 3128 } 3129 3130 void 3131 rf_create_configuration(RF_AutoConfig_t *ac, RF_Config_t *config, 3132 RF_Raid_t *raidPtr) 3133 { 3134 RF_ComponentLabel_t *clabel; 3135 int i; 3136 3137 clabel = ac->clabel; 3138 3139 /* 1. Fill in the common stuff */ 3140 config->numRow = clabel->num_rows = 1; 3141 config->numCol = clabel->num_columns; 3142 config->numSpare = 0; /* XXX should this be set here? */ 3143 config->sectPerSU = clabel->sectPerSU; 3144 config->SUsPerPU = clabel->SUsPerPU; 3145 config->SUsPerRU = clabel->SUsPerRU; 3146 config->parityConfig = clabel->parityConfig; 3147 /* XXX... */ 3148 strcpy(config->diskQueueType,"fifo"); 3149 config->maxOutstandingDiskReqs = clabel->maxOutstanding; 3150 config->layoutSpecificSize = 0; /* XXX ?? */ 3151 3152 while(ac!=NULL) { 3153 /* row/col values will be in range due to the checks 3154 in reasonable_label() */ 3155 strcpy(config->devnames[0][ac->clabel->column], 3156 ac->devname); 3157 ac = ac->next; 3158 } 3159 3160 for(i=0;i<RF_MAXDBGV;i++) { 3161 config->debugVars[i][0] = 0; 3162 } 3163 } 3164 3165 int 3166 rf_set_autoconfig(RF_Raid_t *raidPtr, int new_value) 3167 { 3168 RF_ComponentLabel_t clabel; 3169 struct vnode *vp; 3170 dev_t dev; 3171 int column; 3172 int sparecol; 3173 3174 raidPtr->autoconfigure = new_value; 3175 3176 for(column=0; column<raidPtr->numCol; column++) { 3177 if (raidPtr->Disks[column].status == rf_ds_optimal) { 3178 dev = raidPtr->Disks[column].dev; 3179 vp = raidPtr->raid_cinfo[column].ci_vp; 3180 raidread_component_label(dev, vp, &clabel); 3181 clabel.autoconfigure = new_value; 3182 raidwrite_component_label(dev, vp, &clabel); 3183 } 3184 } 3185 for(column = 0; column < raidPtr->numSpare ; column++) { 3186 sparecol = raidPtr->numCol + column; 3187 if (raidPtr->Disks[sparecol].status == rf_ds_used_spare) { 3188 dev = raidPtr->Disks[sparecol].dev; 3189 vp = raidPtr->raid_cinfo[sparecol].ci_vp; 3190 raidread_component_label(dev, vp, &clabel); 3191 clabel.autoconfigure = new_value; 3192 raidwrite_component_label(dev, vp, &clabel); 3193 } 3194 } 3195 return(new_value); 3196 } 3197 3198 int 3199 rf_set_rootpartition(RF_Raid_t *raidPtr, int new_value) 3200 { 3201 RF_ComponentLabel_t clabel; 3202 struct vnode *vp; 3203 dev_t dev; 3204 int column; 3205 int sparecol; 3206 3207 raidPtr->root_partition = new_value; 3208 for(column=0; column<raidPtr->numCol; column++) { 3209 if (raidPtr->Disks[column].status == rf_ds_optimal) { 3210 dev = raidPtr->Disks[column].dev; 3211 vp = raidPtr->raid_cinfo[column].ci_vp; 3212 raidread_component_label(dev, vp, &clabel); 3213 clabel.root_partition = new_value; 3214 raidwrite_component_label(dev, vp, &clabel); 3215 } 3216 } 3217 for(column = 0; column < raidPtr->numSpare ; column++) { 3218 sparecol = raidPtr->numCol + column; 3219 if (raidPtr->Disks[sparecol].status == rf_ds_used_spare) { 3220 dev = raidPtr->Disks[sparecol].dev; 3221 vp = raidPtr->raid_cinfo[sparecol].ci_vp; 3222 raidread_component_label(dev, vp, &clabel); 3223 clabel.root_partition = new_value; 3224 raidwrite_component_label(dev, vp, &clabel); 3225 } 3226 } 3227 return(new_value); 3228 } 3229 3230 void 3231 rf_release_all_vps(RF_ConfigSet_t *cset) 3232 { 3233 RF_AutoConfig_t *ac; 3234 3235 ac = cset->ac; 3236 while(ac!=NULL) { 3237 /* Close the vp, and give it back */ 3238 if (ac->vp) { 3239 vn_lock(ac->vp, LK_EXCLUSIVE | LK_RETRY); 3240 VOP_CLOSE(ac->vp, FREAD, NOCRED, 0); 3241 vput(ac->vp); 3242 ac->vp = NULL; 3243 } 3244 ac = ac->next; 3245 } 3246 } 3247 3248 3249 void 3250 rf_cleanup_config_set(RF_ConfigSet_t *cset) 3251 { 3252 RF_AutoConfig_t *ac; 3253 RF_AutoConfig_t *next_ac; 3254 3255 ac = cset->ac; 3256 while(ac!=NULL) { 3257 next_ac = ac->next; 3258 /* nuke the label */ 3259 free(ac->clabel, M_RAIDFRAME); 3260 /* cleanup the config structure */ 3261 free(ac, M_RAIDFRAME); 3262 /* "next.." */ 3263 ac = next_ac; 3264 } 3265 /* and, finally, nuke the config set */ 3266 free(cset, M_RAIDFRAME); 3267 } 3268 3269 3270 void 3271 raid_init_component_label(RF_Raid_t *raidPtr, RF_ComponentLabel_t *clabel) 3272 { 3273 /* current version number */ 3274 clabel->version = RF_COMPONENT_LABEL_VERSION; 3275 clabel->serial_number = raidPtr->serial_number; 3276 clabel->mod_counter = raidPtr->mod_counter; 3277 clabel->num_rows = 1; 3278 clabel->num_columns = raidPtr->numCol; 3279 clabel->clean = RF_RAID_DIRTY; /* not clean */ 3280 clabel->status = rf_ds_optimal; /* "It's good!" */ 3281 3282 clabel->sectPerSU = raidPtr->Layout.sectorsPerStripeUnit; 3283 clabel->SUsPerPU = raidPtr->Layout.SUsPerPU; 3284 clabel->SUsPerRU = raidPtr->Layout.SUsPerRU; 3285 3286 clabel->blockSize = raidPtr->bytesPerSector; 3287 clabel->numBlocks = raidPtr->sectorsPerDisk; 3288 3289 /* XXX not portable */ 3290 clabel->parityConfig = raidPtr->Layout.map->parityConfig; 3291 clabel->maxOutstanding = raidPtr->maxOutstanding; 3292 clabel->autoconfigure = raidPtr->autoconfigure; 3293 clabel->root_partition = raidPtr->root_partition; 3294 clabel->last_unit = raidPtr->raidid; 3295 clabel->config_order = raidPtr->config_order; 3296 } 3297 3298 int 3299 rf_auto_config_set(RF_ConfigSet_t *cset, int *unit) 3300 { 3301 RF_Raid_t *raidPtr; 3302 RF_Config_t *config; 3303 int raidID; 3304 int retcode; 3305 3306 #ifdef DEBUG 3307 printf("RAID autoconfigure\n"); 3308 #endif 3309 3310 retcode = 0; 3311 *unit = -1; 3312 3313 /* 1. Create a config structure */ 3314 3315 config = (RF_Config_t *)malloc(sizeof(RF_Config_t), 3316 M_RAIDFRAME, 3317 M_NOWAIT); 3318 if (config==NULL) { 3319 printf("Out of mem!?!?\n"); 3320 /* XXX do something more intelligent here. */ 3321 return(1); 3322 } 3323 3324 memset(config, 0, sizeof(RF_Config_t)); 3325 3326 /* 3327 2. Figure out what RAID ID this one is supposed to live at 3328 See if we can get the same RAID dev that it was configured 3329 on last time.. 3330 */ 3331 3332 raidID = cset->ac->clabel->last_unit; 3333 if ((raidID < 0) || (raidID >= numraid)) { 3334 /* let's not wander off into lala land. */ 3335 raidID = numraid - 1; 3336 } 3337 if (raidPtrs[raidID]->valid != 0) { 3338 3339 /* 3340 Nope... Go looking for an alternative... 3341 Start high so we don't immediately use raid0 if that's 3342 not taken. 3343 */ 3344 3345 for(raidID = numraid - 1; raidID >= 0; raidID--) { 3346 if (raidPtrs[raidID]->valid == 0) { 3347 /* can use this one! */ 3348 break; 3349 } 3350 } 3351 } 3352 3353 if (raidID < 0) { 3354 /* punt... */ 3355 printf("Unable to auto configure this set!\n"); 3356 printf("(Out of RAID devs!)\n"); 3357 free(config, M_RAIDFRAME); 3358 return(1); 3359 } 3360 3361 #ifdef DEBUG 3362 printf("Configuring raid%d:\n",raidID); 3363 #endif 3364 3365 raidPtr = raidPtrs[raidID]; 3366 3367 /* XXX all this stuff should be done SOMEWHERE ELSE! */ 3368 raidPtr->raidid = raidID; 3369 raidPtr->openings = RAIDOUTSTANDING; 3370 3371 /* 3. Build the configuration structure */ 3372 rf_create_configuration(cset->ac, config, raidPtr); 3373 3374 /* 4. Do the configuration */ 3375 retcode = rf_Configure(raidPtr, config, cset->ac); 3376 3377 if (retcode == 0) { 3378 3379 raidinit(raidPtrs[raidID]); 3380 3381 rf_markalldirty(raidPtrs[raidID]); 3382 raidPtrs[raidID]->autoconfigure = 1; /* XXX do this here? */ 3383 if (cset->ac->clabel->root_partition==1) { 3384 /* everything configured just fine. Make a note 3385 that this set is eligible to be root. */ 3386 cset->rootable = 1; 3387 /* XXX do this here? */ 3388 raidPtrs[raidID]->root_partition = 1; 3389 } 3390 } 3391 3392 /* 5. Cleanup */ 3393 free(config, M_RAIDFRAME); 3394 3395 *unit = raidID; 3396 return(retcode); 3397 } 3398 3399 void 3400 rf_disk_unbusy(RF_RaidAccessDesc_t *desc) 3401 { 3402 struct buf *bp; 3403 3404 bp = (struct buf *)desc->bp; 3405 disk_unbusy(&raid_softc[desc->raidPtr->raidid].sc_dkdev, 3406 (bp->b_bcount - bp->b_resid), (bp->b_flags & B_READ)); 3407 } 3408 3409 void 3410 rf_pool_init(struct pool *p, size_t size, const char *w_chan, 3411 size_t xmin, size_t xmax) 3412 { 3413 pool_init(p, size, 0, 0, 0, w_chan, NULL, IPL_BIO); 3414 pool_sethiwat(p, xmax); 3415 pool_prime(p, xmin); 3416 pool_setlowat(p, xmin); 3417 } 3418 3419 /* 3420 * rf_buf_queue_check(int raidid) -- looks into the buf_queue to see 3421 * if there is IO pending and if that IO could possibly be done for a 3422 * given RAID set. Returns 0 if IO is waiting and can be done, 1 3423 * otherwise. 3424 * 3425 */ 3426 3427 int 3428 rf_buf_queue_check(int raidid) 3429 { 3430 if ((BUFQ_PEEK(raid_softc[raidid].buf_queue) != NULL) && 3431 raidPtrs[raidid]->openings > 0) { 3432 /* there is work to do */ 3433 return 0; 3434 } 3435 /* default is nothing to do */ 3436 return 1; 3437 } 3438 3439 int 3440 rf_getdisksize(struct vnode *vp, struct lwp *l, RF_RaidDisk_t *diskPtr) 3441 { 3442 struct partinfo dpart; 3443 struct dkwedge_info dkw; 3444 int error; 3445 3446 error = VOP_IOCTL(vp, DIOCGPART, &dpart, FREAD, l->l_cred, l); 3447 if (error == 0) { 3448 diskPtr->blockSize = dpart.disklab->d_secsize; 3449 diskPtr->numBlocks = dpart.part->p_size - rf_protectedSectors; 3450 diskPtr->partitionSize = dpart.part->p_size; 3451 return 0; 3452 } 3453 3454 error = VOP_IOCTL(vp, DIOCGWEDGEINFO, &dkw, FREAD, l->l_cred, l); 3455 if (error == 0) { 3456 diskPtr->blockSize = 512; /* XXX */ 3457 diskPtr->numBlocks = dkw.dkw_size - rf_protectedSectors; 3458 diskPtr->partitionSize = dkw.dkw_size; 3459 return 0; 3460 } 3461 return error; 3462 } 3463 3464 static int 3465 raid_match(struct device *self, struct cfdata *cfdata, 3466 void *aux) 3467 { 3468 return 1; 3469 } 3470 3471 static void 3472 raid_attach(struct device *parent, struct device *self, 3473 void *aux) 3474 { 3475 3476 } 3477 3478 3479 static int 3480 raid_detach(struct device *self, int flags) 3481 { 3482 struct raid_softc *rs = (struct raid_softc *)self; 3483 3484 if (rs->sc_flags & RAIDF_INITED) 3485 return EBUSY; 3486 3487 return 0; 3488 } 3489 3490 3491
Indexes created Fri Sep 26 20:09:58 GMT 2025