rf_netbsdkintf.c revision 1.150
1 /* $NetBSD: rf_netbsdkintf.c,v 1.150 2002/11/19 01:49:41 oster 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) 1988 University of Utah. 40 * Copyright (c) 1990, 1993 41 * The Regents of the University of California. All rights reserved. 42 * 43 * This code is derived from software contributed to Berkeley by 44 * the Systems Programming Group of the University of Utah Computer 45 * Science Department. 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 1. Redistributions of source code must retain the above copyright 51 * notice, this list of conditions and the following disclaimer. 52 * 2. Redistributions in binary form must reproduce the above copyright 53 * notice, this list of conditions and the following disclaimer in the 54 * documentation and/or other materials provided with the distribution. 55 * 3. All advertising materials mentioning features or use of this software 56 * must display the following acknowledgement: 57 * This product includes software developed by the University of 58 * California, Berkeley and its contributors. 59 * 4. Neither the name of the University nor the names of its contributors 60 * may be used to endorse or promote products derived from this software 61 * without specific prior written permission. 62 * 63 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 64 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 65 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 66 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 67 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 68 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 69 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 70 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 71 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 72 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 73 * SUCH DAMAGE. 74 * 75 * from: Utah $Hdr: cd.c 1.6 90/11/28$ 76 * 77 * @(#)cd.c 8.2 (Berkeley) 11/16/93 78 */ 79 80 81 82 83 /* 84 * Copyright (c) 1995 Carnegie-Mellon University. 85 * All rights reserved. 86 * 87 * Authors: Mark Holland, Jim Zelenka 88 * 89 * Permission to use, copy, modify and distribute this software and 90 * its documentation is hereby granted, provided that both the copyright 91 * notice and this permission notice appear in all copies of the 92 * software, derivative works or modified versions, and any portions 93 * thereof, and that both notices appear in supporting documentation. 94 * 95 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 96 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 97 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 98 * 99 * Carnegie Mellon requests users of this software to return to 100 * 101 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 102 * School of Computer Science 103 * Carnegie Mellon University 104 * Pittsburgh PA 15213-3890 105 * 106 * any improvements or extensions that they make and grant Carnegie the 107 * rights to redistribute these changes. 108 */ 109 110 /*********************************************************** 111 * 112 * rf_kintf.c -- the kernel interface routines for RAIDframe 113 * 114 ***********************************************************/ 115 116 #include <sys/cdefs.h> 117 __KERNEL_RCSID(0, "$NetBSD: rf_netbsdkintf.c,v 1.150 2002/11/19 01:49:41 oster Exp $"); 118 119 #include <sys/param.h> 120 #include <sys/errno.h> 121 #include <sys/pool.h> 122 #include <sys/queue.h> 123 #include <sys/disk.h> 124 #include <sys/device.h> 125 #include <sys/stat.h> 126 #include <sys/ioctl.h> 127 #include <sys/fcntl.h> 128 #include <sys/systm.h> 129 #include <sys/namei.h> 130 #include <sys/vnode.h> 131 #include <sys/disklabel.h> 132 #include <sys/conf.h> 133 #include <sys/lock.h> 134 #include <sys/buf.h> 135 #include <sys/user.h> 136 #include <sys/reboot.h> 137 138 #include <dev/raidframe/raidframevar.h> 139 #include <dev/raidframe/raidframeio.h> 140 #include "raid.h" 141 #include "opt_raid_autoconfig.h" 142 #include "rf_raid.h" 143 #include "rf_copyback.h" 144 #include "rf_dag.h" 145 #include "rf_dagflags.h" 146 #include "rf_desc.h" 147 #include "rf_diskqueue.h" 148 #include "rf_etimer.h" 149 #include "rf_general.h" 150 #include "rf_kintf.h" 151 #include "rf_options.h" 152 #include "rf_driver.h" 153 #include "rf_parityscan.h" 154 #include "rf_threadstuff.h" 155 156 #ifdef DEBUG 157 int rf_kdebug_level = 0; 158 #define db1_printf(a) if (rf_kdebug_level > 0) printf a 159 #else /* DEBUG */ 160 #define db1_printf(a) { } 161 #endif /* DEBUG */ 162 163 static RF_Raid_t **raidPtrs; /* global raid device descriptors */ 164 165 RF_DECLARE_STATIC_MUTEX(rf_sparet_wait_mutex) 166 167 static RF_SparetWait_t *rf_sparet_wait_queue; /* requests to install a 168 * spare table */ 169 static RF_SparetWait_t *rf_sparet_resp_queue; /* responses from 170 * installation process */ 171 172 /* prototypes */ 173 static void KernelWakeupFunc(struct buf * bp); 174 static void InitBP(struct buf * bp, struct vnode *, unsigned rw_flag, 175 dev_t dev, RF_SectorNum_t startSect, 176 RF_SectorCount_t numSect, caddr_t buf, 177 void (*cbFunc) (struct buf *), void *cbArg, 178 int logBytesPerSector, struct proc * b_proc); 179 static void raidinit(RF_Raid_t *); 180 181 void raidattach(int); 182 183 dev_type_open(raidopen); 184 dev_type_close(raidclose); 185 dev_type_read(raidread); 186 dev_type_write(raidwrite); 187 dev_type_ioctl(raidioctl); 188 dev_type_strategy(raidstrategy); 189 dev_type_dump(raiddump); 190 dev_type_size(raidsize); 191 192 const struct bdevsw raid_bdevsw = { 193 raidopen, raidclose, raidstrategy, raidioctl, 194 raiddump, raidsize, D_DISK 195 }; 196 197 const struct cdevsw raid_cdevsw = { 198 raidopen, raidclose, raidread, raidwrite, raidioctl, 199 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 200 }; 201 202 /* 203 * Pilfered from ccd.c 204 */ 205 206 struct raidbuf { 207 struct buf rf_buf; /* new I/O buf. MUST BE FIRST!!! */ 208 struct buf *rf_obp; /* ptr. to original I/O buf */ 209 RF_DiskQueueData_t *req;/* the request that this was part of.. */ 210 }; 211 212 /* component buffer pool */ 213 struct pool raidframe_cbufpool; 214 215 /* XXX Not sure if the following should be replacing the raidPtrs above, 216 or if it should be used in conjunction with that... 217 */ 218 219 struct raid_softc { 220 int sc_flags; /* flags */ 221 int sc_cflags; /* configuration flags */ 222 size_t sc_size; /* size of the raid device */ 223 char sc_xname[20]; /* XXX external name */ 224 struct disk sc_dkdev; /* generic disk device info */ 225 struct bufq_state buf_queue; /* used for the device queue */ 226 }; 227 /* sc_flags */ 228 #define RAIDF_INITED 0x01 /* unit has been initialized */ 229 #define RAIDF_WLABEL 0x02 /* label area is writable */ 230 #define RAIDF_LABELLING 0x04 /* unit is currently being labelled */ 231 #define RAIDF_WANTED 0x40 /* someone is waiting to obtain a lock */ 232 #define RAIDF_LOCKED 0x80 /* unit is locked */ 233 234 #define raidunit(x) DISKUNIT(x) 235 int numraid = 0; 236 237 /* 238 * Allow RAIDOUTSTANDING number of simultaneous IO's to this RAID device. 239 * Be aware that large numbers can allow the driver to consume a lot of 240 * kernel memory, especially on writes, and in degraded mode reads. 241 * 242 * For example: with a stripe width of 64 blocks (32k) and 5 disks, 243 * a single 64K write will typically require 64K for the old data, 244 * 64K for the old parity, and 64K for the new parity, for a total 245 * of 192K (if the parity buffer is not re-used immediately). 246 * Even it if is used immediately, that's still 128K, which when multiplied 247 * by say 10 requests, is 1280K, *on top* of the 640K of incoming data. 248 * 249 * Now in degraded mode, for example, a 64K read on the above setup may 250 * require data reconstruction, which will require *all* of the 4 remaining 251 * disks to participate -- 4 * 32K/disk == 128K again. 252 */ 253 254 #ifndef RAIDOUTSTANDING 255 #define RAIDOUTSTANDING 6 256 #endif 257 258 #define RAIDLABELDEV(dev) \ 259 (MAKEDISKDEV(major((dev)), raidunit((dev)), RAW_PART)) 260 261 /* declared here, and made public, for the benefit of KVM stuff.. */ 262 struct raid_softc *raid_softc; 263 264 static void raidgetdefaultlabel(RF_Raid_t *, struct raid_softc *, 265 struct disklabel *); 266 static void raidgetdisklabel(dev_t); 267 static void raidmakedisklabel(struct raid_softc *); 268 269 static int raidlock(struct raid_softc *); 270 static void raidunlock(struct raid_softc *); 271 272 static void rf_markalldirty(RF_Raid_t *); 273 274 struct device *raidrootdev; 275 276 void rf_ReconThread(struct rf_recon_req *); 277 /* XXX what I want is: */ 278 /*void rf_ReconThread(RF_Raid_t *raidPtr); */ 279 void rf_RewriteParityThread(RF_Raid_t *raidPtr); 280 void rf_CopybackThread(RF_Raid_t *raidPtr); 281 void rf_ReconstructInPlaceThread(struct rf_recon_req *); 282 int rf_autoconfig(struct device *self); 283 void rf_buildroothack(RF_ConfigSet_t *); 284 285 RF_AutoConfig_t *rf_find_raid_components(void); 286 RF_ConfigSet_t *rf_create_auto_sets(RF_AutoConfig_t *); 287 static int rf_does_it_fit(RF_ConfigSet_t *,RF_AutoConfig_t *); 288 static int rf_reasonable_label(RF_ComponentLabel_t *); 289 void rf_create_configuration(RF_AutoConfig_t *,RF_Config_t *, RF_Raid_t *); 290 int rf_set_autoconfig(RF_Raid_t *, int); 291 int rf_set_rootpartition(RF_Raid_t *, int); 292 void rf_release_all_vps(RF_ConfigSet_t *); 293 void rf_cleanup_config_set(RF_ConfigSet_t *); 294 int rf_have_enough_components(RF_ConfigSet_t *); 295 int rf_auto_config_set(RF_ConfigSet_t *, int *); 296 297 static int raidautoconfig = 0; /* Debugging, mostly. Set to 0 to not 298 allow autoconfig to take place. 299 Note that this is overridden by having 300 RAID_AUTOCONFIG as an option in the 301 kernel config file. */ 302 303 void 304 raidattach(num) 305 int num; 306 { 307 int raidID; 308 int i, rc; 309 310 #ifdef DEBUG 311 printf("raidattach: Asked for %d units\n", num); 312 #endif 313 314 if (num <= 0) { 315 #ifdef DIAGNOSTIC 316 panic("raidattach: count <= 0"); 317 #endif 318 return; 319 } 320 /* This is where all the initialization stuff gets done. */ 321 322 numraid = num; 323 324 /* Make some space for requested number of units... */ 325 326 RF_Calloc(raidPtrs, num, sizeof(RF_Raid_t *), (RF_Raid_t **)); 327 if (raidPtrs == NULL) { 328 panic("raidPtrs is NULL!!"); 329 } 330 331 /* Initialize the component buffer pool. */ 332 pool_init(&raidframe_cbufpool, sizeof(struct raidbuf), 0, 333 0, 0, "raidpl", NULL); 334 335 rc = rf_mutex_init(&rf_sparet_wait_mutex); 336 if (rc) { 337 RF_PANIC(); 338 } 339 340 rf_sparet_wait_queue = rf_sparet_resp_queue = NULL; 341 342 for (i = 0; i < num; i++) 343 raidPtrs[i] = NULL; 344 rc = rf_BootRaidframe(); 345 if (rc == 0) 346 printf("Kernelized RAIDframe activated\n"); 347 else 348 panic("Serious error booting RAID!!"); 349 350 /* put together some datastructures like the CCD device does.. This 351 * lets us lock the device and what-not when it gets opened. */ 352 353 raid_softc = (struct raid_softc *) 354 malloc(num * sizeof(struct raid_softc), 355 M_RAIDFRAME, M_NOWAIT); 356 if (raid_softc == NULL) { 357 printf("WARNING: no memory for RAIDframe driver\n"); 358 return; 359 } 360 361 memset(raid_softc, 0, num * sizeof(struct raid_softc)); 362 363 raidrootdev = (struct device *)malloc(num * sizeof(struct device), 364 M_RAIDFRAME, M_NOWAIT); 365 if (raidrootdev == NULL) { 366 panic("No memory for RAIDframe driver!!?!?!"); 367 } 368 369 for (raidID = 0; raidID < num; raidID++) { 370 bufq_alloc(&raid_softc[raidID].buf_queue, BUFQ_FCFS); 371 372 raidrootdev[raidID].dv_class = DV_DISK; 373 raidrootdev[raidID].dv_cfdata = NULL; 374 raidrootdev[raidID].dv_unit = raidID; 375 raidrootdev[raidID].dv_parent = NULL; 376 raidrootdev[raidID].dv_flags = 0; 377 sprintf(raidrootdev[raidID].dv_xname,"raid%d",raidID); 378 379 RF_Calloc(raidPtrs[raidID], 1, sizeof(RF_Raid_t), 380 (RF_Raid_t *)); 381 if (raidPtrs[raidID] == NULL) { 382 printf("WARNING: raidPtrs[%d] is NULL\n", raidID); 383 numraid = raidID; 384 return; 385 } 386 } 387 388 #ifdef RAID_AUTOCONFIG 389 raidautoconfig = 1; 390 #endif 391 392 /* 393 * Register a finalizer which will be used to auto-config RAID 394 * sets once all real hardware devices have been found. 395 */ 396 if (config_finalize_register(NULL, rf_autoconfig) != 0) 397 printf("WARNING: unable to register RAIDframe finalizer\n"); 398 } 399 400 int 401 rf_autoconfig(struct device *self) 402 { 403 RF_AutoConfig_t *ac_list; 404 RF_ConfigSet_t *config_sets; 405 406 if (raidautoconfig == 0) 407 return (0); 408 409 /* XXX This code can only be run once. */ 410 raidautoconfig = 0; 411 412 /* 1. locate all RAID components on the system */ 413 #ifdef DEBUG 414 printf("Searching for RAID components...\n"); 415 #endif 416 ac_list = rf_find_raid_components(); 417 418 /* 2. Sort them into their respective sets. */ 419 config_sets = rf_create_auto_sets(ac_list); 420 421 /* 422 * 3. Evaluate each set andconfigure the valid ones. 423 * This gets done in rf_buildroothack(). 424 */ 425 rf_buildroothack(config_sets); 426 427 return (1); 428 } 429 430 void 431 rf_buildroothack(RF_ConfigSet_t *config_sets) 432 { 433 RF_ConfigSet_t *cset; 434 RF_ConfigSet_t *next_cset; 435 int retcode; 436 int raidID; 437 int rootID; 438 int num_root; 439 440 rootID = 0; 441 num_root = 0; 442 cset = config_sets; 443 while(cset != NULL ) { 444 next_cset = cset->next; 445 if (rf_have_enough_components(cset) && 446 cset->ac->clabel->autoconfigure==1) { 447 retcode = rf_auto_config_set(cset,&raidID); 448 if (!retcode) { 449 if (cset->rootable) { 450 rootID = raidID; 451 num_root++; 452 } 453 } else { 454 /* The autoconfig didn't work :( */ 455 #if DEBUG 456 printf("Autoconfig failed with code %d for raid%d\n", retcode, raidID); 457 #endif 458 rf_release_all_vps(cset); 459 } 460 } else { 461 /* we're not autoconfiguring this set... 462 release the associated resources */ 463 rf_release_all_vps(cset); 464 } 465 /* cleanup */ 466 rf_cleanup_config_set(cset); 467 cset = next_cset; 468 } 469 470 /* we found something bootable... */ 471 472 if (num_root == 1) { 473 booted_device = &raidrootdev[rootID]; 474 } else if (num_root > 1) { 475 /* we can't guess.. require the user to answer... */ 476 boothowto |= RB_ASKNAME; 477 } 478 } 479 480 481 int 482 raidsize(dev) 483 dev_t dev; 484 { 485 struct raid_softc *rs; 486 struct disklabel *lp; 487 int part, unit, omask, size; 488 489 unit = raidunit(dev); 490 if (unit >= numraid) 491 return (-1); 492 rs = &raid_softc[unit]; 493 494 if ((rs->sc_flags & RAIDF_INITED) == 0) 495 return (-1); 496 497 part = DISKPART(dev); 498 omask = rs->sc_dkdev.dk_openmask & (1 << part); 499 lp = rs->sc_dkdev.dk_label; 500 501 if (omask == 0 && raidopen(dev, 0, S_IFBLK, curproc)) 502 return (-1); 503 504 if (lp->d_partitions[part].p_fstype != FS_SWAP) 505 size = -1; 506 else 507 size = lp->d_partitions[part].p_size * 508 (lp->d_secsize / DEV_BSIZE); 509 510 if (omask == 0 && raidclose(dev, 0, S_IFBLK, curproc)) 511 return (-1); 512 513 return (size); 514 515 } 516 517 int 518 raiddump(dev, blkno, va, size) 519 dev_t dev; 520 daddr_t blkno; 521 caddr_t va; 522 size_t size; 523 { 524 /* Not implemented. */ 525 return ENXIO; 526 } 527 /* ARGSUSED */ 528 int 529 raidopen(dev, flags, fmt, p) 530 dev_t dev; 531 int flags, fmt; 532 struct proc *p; 533 { 534 int unit = raidunit(dev); 535 struct raid_softc *rs; 536 struct disklabel *lp; 537 int part, pmask; 538 int error = 0; 539 540 if (unit >= numraid) 541 return (ENXIO); 542 rs = &raid_softc[unit]; 543 544 if ((error = raidlock(rs)) != 0) 545 return (error); 546 lp = rs->sc_dkdev.dk_label; 547 548 part = DISKPART(dev); 549 pmask = (1 << part); 550 551 if ((rs->sc_flags & RAIDF_INITED) && 552 (rs->sc_dkdev.dk_openmask == 0)) 553 raidgetdisklabel(dev); 554 555 /* make sure that this partition exists */ 556 557 if (part != RAW_PART) { 558 if (((rs->sc_flags & RAIDF_INITED) == 0) || 559 ((part >= lp->d_npartitions) || 560 (lp->d_partitions[part].p_fstype == FS_UNUSED))) { 561 error = ENXIO; 562 raidunlock(rs); 563 return (error); 564 } 565 } 566 /* Prevent this unit from being unconfigured while open. */ 567 switch (fmt) { 568 case S_IFCHR: 569 rs->sc_dkdev.dk_copenmask |= pmask; 570 break; 571 572 case S_IFBLK: 573 rs->sc_dkdev.dk_bopenmask |= pmask; 574 break; 575 } 576 577 if ((rs->sc_dkdev.dk_openmask == 0) && 578 ((rs->sc_flags & RAIDF_INITED) != 0)) { 579 /* First one... mark things as dirty... Note that we *MUST* 580 have done a configure before this. I DO NOT WANT TO BE 581 SCRIBBLING TO RANDOM COMPONENTS UNTIL IT'S BEEN DETERMINED 582 THAT THEY BELONG TOGETHER!!!!! */ 583 /* XXX should check to see if we're only open for reading 584 here... If so, we needn't do this, but then need some 585 other way of keeping track of what's happened.. */ 586 587 rf_markalldirty( raidPtrs[unit] ); 588 } 589 590 591 rs->sc_dkdev.dk_openmask = 592 rs->sc_dkdev.dk_copenmask | rs->sc_dkdev.dk_bopenmask; 593 594 raidunlock(rs); 595 596 return (error); 597 598 599 } 600 /* ARGSUSED */ 601 int 602 raidclose(dev, flags, fmt, p) 603 dev_t dev; 604 int flags, fmt; 605 struct proc *p; 606 { 607 int unit = raidunit(dev); 608 struct raid_softc *rs; 609 int error = 0; 610 int part; 611 612 if (unit >= numraid) 613 return (ENXIO); 614 rs = &raid_softc[unit]; 615 616 if ((error = raidlock(rs)) != 0) 617 return (error); 618 619 part = DISKPART(dev); 620 621 /* ...that much closer to allowing unconfiguration... */ 622 switch (fmt) { 623 case S_IFCHR: 624 rs->sc_dkdev.dk_copenmask &= ~(1 << part); 625 break; 626 627 case S_IFBLK: 628 rs->sc_dkdev.dk_bopenmask &= ~(1 << part); 629 break; 630 } 631 rs->sc_dkdev.dk_openmask = 632 rs->sc_dkdev.dk_copenmask | rs->sc_dkdev.dk_bopenmask; 633 634 if ((rs->sc_dkdev.dk_openmask == 0) && 635 ((rs->sc_flags & RAIDF_INITED) != 0)) { 636 /* Last one... device is not unconfigured yet. 637 Device shutdown has taken care of setting the 638 clean bits if RAIDF_INITED is not set 639 mark things as clean... */ 640 641 rf_update_component_labels(raidPtrs[unit], 642 RF_FINAL_COMPONENT_UPDATE); 643 if (doing_shutdown) { 644 /* last one, and we're going down, so 645 lights out for this RAID set too. */ 646 error = rf_Shutdown(raidPtrs[unit]); 647 648 /* It's no longer initialized... */ 649 rs->sc_flags &= ~RAIDF_INITED; 650 651 /* Detach the disk. */ 652 disk_detach(&rs->sc_dkdev); 653 } 654 } 655 656 raidunlock(rs); 657 return (0); 658 659 } 660 661 void 662 raidstrategy(bp) 663 struct buf *bp; 664 { 665 int s; 666 667 unsigned int raidID = raidunit(bp->b_dev); 668 RF_Raid_t *raidPtr; 669 struct raid_softc *rs = &raid_softc[raidID]; 670 struct disklabel *lp; 671 int wlabel; 672 673 if ((rs->sc_flags & RAIDF_INITED) ==0) { 674 bp->b_error = ENXIO; 675 bp->b_flags |= B_ERROR; 676 bp->b_resid = bp->b_bcount; 677 biodone(bp); 678 return; 679 } 680 if (raidID >= numraid || !raidPtrs[raidID]) { 681 bp->b_error = ENODEV; 682 bp->b_flags |= B_ERROR; 683 bp->b_resid = bp->b_bcount; 684 biodone(bp); 685 return; 686 } 687 raidPtr = raidPtrs[raidID]; 688 if (!raidPtr->valid) { 689 bp->b_error = ENODEV; 690 bp->b_flags |= B_ERROR; 691 bp->b_resid = bp->b_bcount; 692 biodone(bp); 693 return; 694 } 695 if (bp->b_bcount == 0) { 696 db1_printf(("b_bcount is zero..\n")); 697 biodone(bp); 698 return; 699 } 700 lp = rs->sc_dkdev.dk_label; 701 702 /* 703 * Do bounds checking and adjust transfer. If there's an 704 * error, the bounds check will flag that for us. 705 */ 706 707 wlabel = rs->sc_flags & (RAIDF_WLABEL | RAIDF_LABELLING); 708 if (DISKPART(bp->b_dev) != RAW_PART) 709 if (bounds_check_with_label(bp, lp, wlabel) <= 0) { 710 db1_printf(("Bounds check failed!!:%d %d\n", 711 (int) bp->b_blkno, (int) wlabel)); 712 biodone(bp); 713 return; 714 } 715 s = splbio(); 716 717 bp->b_resid = 0; 718 719 /* stuff it onto our queue */ 720 BUFQ_PUT(&rs->buf_queue, bp); 721 722 raidstart(raidPtrs[raidID]); 723 724 splx(s); 725 } 726 /* ARGSUSED */ 727 int 728 raidread(dev, uio, flags) 729 dev_t dev; 730 struct uio *uio; 731 int flags; 732 { 733 int unit = raidunit(dev); 734 struct raid_softc *rs; 735 int part; 736 737 if (unit >= numraid) 738 return (ENXIO); 739 rs = &raid_softc[unit]; 740 741 if ((rs->sc_flags & RAIDF_INITED) == 0) 742 return (ENXIO); 743 part = DISKPART(dev); 744 745 return (physio(raidstrategy, NULL, dev, B_READ, minphys, uio)); 746 747 } 748 /* ARGSUSED */ 749 int 750 raidwrite(dev, uio, flags) 751 dev_t dev; 752 struct uio *uio; 753 int flags; 754 { 755 int unit = raidunit(dev); 756 struct raid_softc *rs; 757 758 if (unit >= numraid) 759 return (ENXIO); 760 rs = &raid_softc[unit]; 761 762 if ((rs->sc_flags & RAIDF_INITED) == 0) 763 return (ENXIO); 764 765 return (physio(raidstrategy, NULL, dev, B_WRITE, minphys, uio)); 766 767 } 768 769 int 770 raidioctl(dev, cmd, data, flag, p) 771 dev_t dev; 772 u_long cmd; 773 caddr_t data; 774 int flag; 775 struct proc *p; 776 { 777 int unit = raidunit(dev); 778 int error = 0; 779 int part, pmask; 780 struct raid_softc *rs; 781 RF_Config_t *k_cfg, *u_cfg; 782 RF_Raid_t *raidPtr; 783 RF_RaidDisk_t *diskPtr; 784 RF_AccTotals_t *totals; 785 RF_DeviceConfig_t *d_cfg, **ucfgp; 786 u_char *specific_buf; 787 int retcode = 0; 788 int row; 789 int column; 790 int raidid; 791 struct rf_recon_req *rrcopy, *rr; 792 RF_ComponentLabel_t *clabel; 793 RF_ComponentLabel_t ci_label; 794 RF_ComponentLabel_t **clabel_ptr; 795 RF_SingleComponent_t *sparePtr,*componentPtr; 796 RF_SingleComponent_t hot_spare; 797 RF_SingleComponent_t component; 798 RF_ProgressInfo_t progressInfo, **progressInfoPtr; 799 int i, j, d; 800 #ifdef __HAVE_OLD_DISKLABEL 801 struct disklabel newlabel; 802 #endif 803 804 if (unit >= numraid) 805 return (ENXIO); 806 rs = &raid_softc[unit]; 807 raidPtr = raidPtrs[unit]; 808 809 db1_printf(("raidioctl: %d %d %d %d\n", (int) dev, 810 (int) DISKPART(dev), (int) unit, (int) cmd)); 811 812 /* Must be open for writes for these commands... */ 813 switch (cmd) { 814 case DIOCSDINFO: 815 case DIOCWDINFO: 816 #ifdef __HAVE_OLD_DISKLABEL 817 case ODIOCWDINFO: 818 case ODIOCSDINFO: 819 #endif 820 case DIOCWLABEL: 821 if ((flag & FWRITE) == 0) 822 return (EBADF); 823 } 824 825 /* Must be initialized for these... */ 826 switch (cmd) { 827 case DIOCGDINFO: 828 case DIOCSDINFO: 829 case DIOCWDINFO: 830 #ifdef __HAVE_OLD_DISKLABEL 831 case ODIOCGDINFO: 832 case ODIOCWDINFO: 833 case ODIOCSDINFO: 834 case ODIOCGDEFLABEL: 835 #endif 836 case DIOCGPART: 837 case DIOCWLABEL: 838 case DIOCGDEFLABEL: 839 case RAIDFRAME_SHUTDOWN: 840 case RAIDFRAME_REWRITEPARITY: 841 case RAIDFRAME_GET_INFO: 842 case RAIDFRAME_RESET_ACCTOTALS: 843 case RAIDFRAME_GET_ACCTOTALS: 844 case RAIDFRAME_KEEP_ACCTOTALS: 845 case RAIDFRAME_GET_SIZE: 846 case RAIDFRAME_FAIL_DISK: 847 case RAIDFRAME_COPYBACK: 848 case RAIDFRAME_CHECK_RECON_STATUS: 849 case RAIDFRAME_CHECK_RECON_STATUS_EXT: 850 case RAIDFRAME_GET_COMPONENT_LABEL: 851 case RAIDFRAME_SET_COMPONENT_LABEL: 852 case RAIDFRAME_ADD_HOT_SPARE: 853 case RAIDFRAME_REMOVE_HOT_SPARE: 854 case RAIDFRAME_INIT_LABELS: 855 case RAIDFRAME_REBUILD_IN_PLACE: 856 case RAIDFRAME_CHECK_PARITY: 857 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS: 858 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS_EXT: 859 case RAIDFRAME_CHECK_COPYBACK_STATUS: 860 case RAIDFRAME_CHECK_COPYBACK_STATUS_EXT: 861 case RAIDFRAME_SET_AUTOCONFIG: 862 case RAIDFRAME_SET_ROOT: 863 case RAIDFRAME_DELETE_COMPONENT: 864 case RAIDFRAME_INCORPORATE_HOT_SPARE: 865 if ((rs->sc_flags & RAIDF_INITED) == 0) 866 return (ENXIO); 867 } 868 869 switch (cmd) { 870 871 /* configure the system */ 872 case RAIDFRAME_CONFIGURE: 873 874 if (raidPtr->valid) { 875 /* There is a valid RAID set running on this unit! */ 876 printf("raid%d: Device already configured!\n",unit); 877 return(EINVAL); 878 } 879 880 /* copy-in the configuration information */ 881 /* data points to a pointer to the configuration structure */ 882 883 u_cfg = *((RF_Config_t **) data); 884 RF_Malloc(k_cfg, sizeof(RF_Config_t), (RF_Config_t *)); 885 if (k_cfg == NULL) { 886 return (ENOMEM); 887 } 888 retcode = copyin((caddr_t) u_cfg, (caddr_t) k_cfg, 889 sizeof(RF_Config_t)); 890 if (retcode) { 891 RF_Free(k_cfg, sizeof(RF_Config_t)); 892 db1_printf(("rf_ioctl: retcode=%d copyin.1\n", 893 retcode)); 894 return (retcode); 895 } 896 /* allocate a buffer for the layout-specific data, and copy it 897 * in */ 898 if (k_cfg->layoutSpecificSize) { 899 if (k_cfg->layoutSpecificSize > 10000) { 900 /* sanity check */ 901 RF_Free(k_cfg, sizeof(RF_Config_t)); 902 return (EINVAL); 903 } 904 RF_Malloc(specific_buf, k_cfg->layoutSpecificSize, 905 (u_char *)); 906 if (specific_buf == NULL) { 907 RF_Free(k_cfg, sizeof(RF_Config_t)); 908 return (ENOMEM); 909 } 910 retcode = copyin(k_cfg->layoutSpecific, 911 (caddr_t) specific_buf, 912 k_cfg->layoutSpecificSize); 913 if (retcode) { 914 RF_Free(k_cfg, sizeof(RF_Config_t)); 915 RF_Free(specific_buf, 916 k_cfg->layoutSpecificSize); 917 db1_printf(("rf_ioctl: retcode=%d copyin.2\n", 918 retcode)); 919 return (retcode); 920 } 921 } else 922 specific_buf = NULL; 923 k_cfg->layoutSpecific = specific_buf; 924 925 /* should do some kind of sanity check on the configuration. 926 * Store the sum of all the bytes in the last byte? */ 927 928 /* configure the system */ 929 930 /* 931 * Clear the entire RAID descriptor, just to make sure 932 * there is no stale data left in the case of a 933 * reconfiguration 934 */ 935 memset((char *) raidPtr, 0, sizeof(RF_Raid_t)); 936 raidPtr->raidid = unit; 937 938 retcode = rf_Configure(raidPtr, k_cfg, NULL); 939 940 if (retcode == 0) { 941 942 /* allow this many simultaneous IO's to 943 this RAID device */ 944 raidPtr->openings = RAIDOUTSTANDING; 945 946 raidinit(raidPtr); 947 rf_markalldirty(raidPtr); 948 } 949 /* free the buffers. No return code here. */ 950 if (k_cfg->layoutSpecificSize) { 951 RF_Free(specific_buf, k_cfg->layoutSpecificSize); 952 } 953 RF_Free(k_cfg, sizeof(RF_Config_t)); 954 955 return (retcode); 956 957 /* shutdown the system */ 958 case RAIDFRAME_SHUTDOWN: 959 960 if ((error = raidlock(rs)) != 0) 961 return (error); 962 963 /* 964 * If somebody has a partition mounted, we shouldn't 965 * shutdown. 966 */ 967 968 part = DISKPART(dev); 969 pmask = (1 << part); 970 if ((rs->sc_dkdev.dk_openmask & ~pmask) || 971 ((rs->sc_dkdev.dk_bopenmask & pmask) && 972 (rs->sc_dkdev.dk_copenmask & pmask))) { 973 raidunlock(rs); 974 return (EBUSY); 975 } 976 977 retcode = rf_Shutdown(raidPtr); 978 979 /* It's no longer initialized... */ 980 rs->sc_flags &= ~RAIDF_INITED; 981 982 /* Detach the disk. */ 983 disk_detach(&rs->sc_dkdev); 984 985 raidunlock(rs); 986 987 return (retcode); 988 case RAIDFRAME_GET_COMPONENT_LABEL: 989 clabel_ptr = (RF_ComponentLabel_t **) data; 990 /* need to read the component label for the disk indicated 991 by row,column in clabel */ 992 993 /* For practice, let's get it directly fromdisk, rather 994 than from the in-core copy */ 995 RF_Malloc( clabel, sizeof( RF_ComponentLabel_t ), 996 (RF_ComponentLabel_t *)); 997 if (clabel == NULL) 998 return (ENOMEM); 999 1000 memset((char *) clabel, 0, sizeof(RF_ComponentLabel_t)); 1001 1002 retcode = copyin( *clabel_ptr, clabel, 1003 sizeof(RF_ComponentLabel_t)); 1004 1005 if (retcode) { 1006 RF_Free( clabel, sizeof(RF_ComponentLabel_t)); 1007 return(retcode); 1008 } 1009 1010 row = clabel->row; 1011 column = clabel->column; 1012 1013 if ((row < 0) || (row >= raidPtr->numRow) || 1014 (column < 0) || (column >= raidPtr->numCol + 1015 raidPtr->numSpare)) { 1016 RF_Free( clabel, sizeof(RF_ComponentLabel_t)); 1017 return(EINVAL); 1018 } 1019 1020 raidread_component_label(raidPtr->Disks[row][column].dev, 1021 raidPtr->raid_cinfo[row][column].ci_vp, 1022 clabel ); 1023 1024 retcode = copyout((caddr_t) clabel, 1025 (caddr_t) *clabel_ptr, 1026 sizeof(RF_ComponentLabel_t)); 1027 RF_Free( clabel, sizeof(RF_ComponentLabel_t)); 1028 return (retcode); 1029 1030 case RAIDFRAME_SET_COMPONENT_LABEL: 1031 clabel = (RF_ComponentLabel_t *) data; 1032 1033 /* XXX check the label for valid stuff... */ 1034 /* Note that some things *should not* get modified -- 1035 the user should be re-initing the labels instead of 1036 trying to patch things. 1037 */ 1038 1039 raidid = raidPtr->raidid; 1040 printf("raid%d: Got component label:\n", raidid); 1041 printf("raid%d: Version: %d\n", raidid, clabel->version); 1042 printf("raid%d: Serial Number: %d\n", raidid, clabel->serial_number); 1043 printf("raid%d: Mod counter: %d\n", raidid, clabel->mod_counter); 1044 printf("raid%d: Row: %d\n", raidid, clabel->row); 1045 printf("raid%d: Column: %d\n", raidid, clabel->column); 1046 printf("raid%d: Num Rows: %d\n", raidid, clabel->num_rows); 1047 printf("raid%d: Num Columns: %d\n", raidid, clabel->num_columns); 1048 printf("raid%d: Clean: %d\n", raidid, clabel->clean); 1049 printf("raid%d: Status: %d\n", raidid, clabel->status); 1050 1051 row = clabel->row; 1052 column = clabel->column; 1053 1054 if ((row < 0) || (row >= raidPtr->numRow) || 1055 (column < 0) || (column >= raidPtr->numCol)) { 1056 return(EINVAL); 1057 } 1058 1059 /* XXX this isn't allowed to do anything for now :-) */ 1060 1061 /* XXX and before it is, we need to fill in the rest 1062 of the fields!?!?!?! */ 1063 #if 0 1064 raidwrite_component_label( 1065 raidPtr->Disks[row][column].dev, 1066 raidPtr->raid_cinfo[row][column].ci_vp, 1067 clabel ); 1068 #endif 1069 return (0); 1070 1071 case RAIDFRAME_INIT_LABELS: 1072 clabel = (RF_ComponentLabel_t *) data; 1073 /* 1074 we only want the serial number from 1075 the above. We get all the rest of the information 1076 from the config that was used to create this RAID 1077 set. 1078 */ 1079 1080 raidPtr->serial_number = clabel->serial_number; 1081 1082 raid_init_component_label(raidPtr, &ci_label); 1083 ci_label.serial_number = clabel->serial_number; 1084 1085 for(row=0;row<raidPtr->numRow;row++) { 1086 ci_label.row = row; 1087 for(column=0;column<raidPtr->numCol;column++) { 1088 diskPtr = &raidPtr->Disks[row][column]; 1089 if (!RF_DEAD_DISK(diskPtr->status)) { 1090 ci_label.partitionSize = diskPtr->partitionSize; 1091 ci_label.column = column; 1092 raidwrite_component_label( 1093 raidPtr->Disks[row][column].dev, 1094 raidPtr->raid_cinfo[row][column].ci_vp, 1095 &ci_label ); 1096 } 1097 } 1098 } 1099 1100 return (retcode); 1101 case RAIDFRAME_SET_AUTOCONFIG: 1102 d = rf_set_autoconfig(raidPtr, *(int *) data); 1103 printf("raid%d: New autoconfig value is: %d\n", 1104 raidPtr->raidid, d); 1105 *(int *) data = d; 1106 return (retcode); 1107 1108 case RAIDFRAME_SET_ROOT: 1109 d = rf_set_rootpartition(raidPtr, *(int *) data); 1110 printf("raid%d: New rootpartition value is: %d\n", 1111 raidPtr->raidid, d); 1112 *(int *) data = d; 1113 return (retcode); 1114 1115 /* initialize all parity */ 1116 case RAIDFRAME_REWRITEPARITY: 1117 1118 if (raidPtr->Layout.map->faultsTolerated == 0) { 1119 /* Parity for RAID 0 is trivially correct */ 1120 raidPtr->parity_good = RF_RAID_CLEAN; 1121 return(0); 1122 } 1123 1124 if (raidPtr->parity_rewrite_in_progress == 1) { 1125 /* Re-write is already in progress! */ 1126 return(EINVAL); 1127 } 1128 1129 retcode = RF_CREATE_THREAD(raidPtr->parity_rewrite_thread, 1130 rf_RewriteParityThread, 1131 raidPtr,"raid_parity"); 1132 return (retcode); 1133 1134 1135 case RAIDFRAME_ADD_HOT_SPARE: 1136 sparePtr = (RF_SingleComponent_t *) data; 1137 memcpy( &hot_spare, sparePtr, sizeof(RF_SingleComponent_t)); 1138 retcode = rf_add_hot_spare(raidPtr, &hot_spare); 1139 return(retcode); 1140 1141 case RAIDFRAME_REMOVE_HOT_SPARE: 1142 return(retcode); 1143 1144 case RAIDFRAME_DELETE_COMPONENT: 1145 componentPtr = (RF_SingleComponent_t *)data; 1146 memcpy( &component, componentPtr, 1147 sizeof(RF_SingleComponent_t)); 1148 retcode = rf_delete_component(raidPtr, &component); 1149 return(retcode); 1150 1151 case RAIDFRAME_INCORPORATE_HOT_SPARE: 1152 componentPtr = (RF_SingleComponent_t *)data; 1153 memcpy( &component, componentPtr, 1154 sizeof(RF_SingleComponent_t)); 1155 retcode = rf_incorporate_hot_spare(raidPtr, &component); 1156 return(retcode); 1157 1158 case RAIDFRAME_REBUILD_IN_PLACE: 1159 1160 if (raidPtr->Layout.map->faultsTolerated == 0) { 1161 /* Can't do this on a RAID 0!! */ 1162 return(EINVAL); 1163 } 1164 1165 if (raidPtr->recon_in_progress == 1) { 1166 /* a reconstruct is already in progress! */ 1167 return(EINVAL); 1168 } 1169 1170 componentPtr = (RF_SingleComponent_t *) data; 1171 memcpy( &component, componentPtr, 1172 sizeof(RF_SingleComponent_t)); 1173 row = component.row; 1174 column = component.column; 1175 1176 if ((row < 0) || (row >= raidPtr->numRow) || 1177 (column < 0) || (column >= raidPtr->numCol)) { 1178 return(EINVAL); 1179 } 1180 1181 RF_LOCK_MUTEX(raidPtr->mutex); 1182 if ((raidPtr->Disks[row][column].status == rf_ds_optimal) && 1183 (raidPtr->numFailures > 0)) { 1184 /* XXX 0 above shouldn't be constant!!! */ 1185 /* some component other than this has failed. 1186 Let's not make things worse than they already 1187 are... */ 1188 printf("raid%d: Unable to reconstruct to disk at:\n", 1189 raidPtr->raidid); 1190 printf("raid%d: Row: %d Col: %d Too many failures.\n", 1191 raidPtr->raidid, row, column); 1192 RF_UNLOCK_MUTEX(raidPtr->mutex); 1193 return (EINVAL); 1194 } 1195 if (raidPtr->Disks[row][column].status == 1196 rf_ds_reconstructing) { 1197 printf("raid%d: Unable to reconstruct to disk at:\n", 1198 raidPtr->raidid); 1199 printf("raid%d: Row: %d Col: %d Reconstruction already occuring!\n", raidPtr->raidid, row, column); 1200 1201 RF_UNLOCK_MUTEX(raidPtr->mutex); 1202 return (EINVAL); 1203 } 1204 if (raidPtr->Disks[row][column].status == rf_ds_spared) { 1205 RF_UNLOCK_MUTEX(raidPtr->mutex); 1206 return (EINVAL); 1207 } 1208 RF_UNLOCK_MUTEX(raidPtr->mutex); 1209 1210 RF_Malloc(rrcopy, sizeof(*rrcopy), (struct rf_recon_req *)); 1211 if (rrcopy == NULL) 1212 return(ENOMEM); 1213 1214 rrcopy->raidPtr = (void *) raidPtr; 1215 rrcopy->row = row; 1216 rrcopy->col = column; 1217 1218 retcode = RF_CREATE_THREAD(raidPtr->recon_thread, 1219 rf_ReconstructInPlaceThread, 1220 rrcopy,"raid_reconip"); 1221 return(retcode); 1222 1223 case RAIDFRAME_GET_INFO: 1224 if (!raidPtr->valid) 1225 return (ENODEV); 1226 ucfgp = (RF_DeviceConfig_t **) data; 1227 RF_Malloc(d_cfg, sizeof(RF_DeviceConfig_t), 1228 (RF_DeviceConfig_t *)); 1229 if (d_cfg == NULL) 1230 return (ENOMEM); 1231 memset((char *) d_cfg, 0, sizeof(RF_DeviceConfig_t)); 1232 d_cfg->rows = raidPtr->numRow; 1233 d_cfg->cols = raidPtr->numCol; 1234 d_cfg->ndevs = raidPtr->numRow * raidPtr->numCol; 1235 if (d_cfg->ndevs >= RF_MAX_DISKS) { 1236 RF_Free(d_cfg, sizeof(RF_DeviceConfig_t)); 1237 return (ENOMEM); 1238 } 1239 d_cfg->nspares = raidPtr->numSpare; 1240 if (d_cfg->nspares >= RF_MAX_DISKS) { 1241 RF_Free(d_cfg, sizeof(RF_DeviceConfig_t)); 1242 return (ENOMEM); 1243 } 1244 d_cfg->maxqdepth = raidPtr->maxQueueDepth; 1245 d = 0; 1246 for (i = 0; i < d_cfg->rows; i++) { 1247 for (j = 0; j < d_cfg->cols; j++) { 1248 d_cfg->devs[d] = raidPtr->Disks[i][j]; 1249 d++; 1250 } 1251 } 1252 for (j = d_cfg->cols, i = 0; i < d_cfg->nspares; i++, j++) { 1253 d_cfg->spares[i] = raidPtr->Disks[0][j]; 1254 } 1255 retcode = copyout((caddr_t) d_cfg, (caddr_t) * ucfgp, 1256 sizeof(RF_DeviceConfig_t)); 1257 RF_Free(d_cfg, sizeof(RF_DeviceConfig_t)); 1258 1259 return (retcode); 1260 1261 case RAIDFRAME_CHECK_PARITY: 1262 *(int *) data = raidPtr->parity_good; 1263 return (0); 1264 1265 case RAIDFRAME_RESET_ACCTOTALS: 1266 memset(&raidPtr->acc_totals, 0, sizeof(raidPtr->acc_totals)); 1267 return (0); 1268 1269 case RAIDFRAME_GET_ACCTOTALS: 1270 totals = (RF_AccTotals_t *) data; 1271 *totals = raidPtr->acc_totals; 1272 return (0); 1273 1274 case RAIDFRAME_KEEP_ACCTOTALS: 1275 raidPtr->keep_acc_totals = *(int *)data; 1276 return (0); 1277 1278 case RAIDFRAME_GET_SIZE: 1279 *(int *) data = raidPtr->totalSectors; 1280 return (0); 1281 1282 /* fail a disk & optionally start reconstruction */ 1283 case RAIDFRAME_FAIL_DISK: 1284 1285 if (raidPtr->Layout.map->faultsTolerated == 0) { 1286 /* Can't do this on a RAID 0!! */ 1287 return(EINVAL); 1288 } 1289 1290 rr = (struct rf_recon_req *) data; 1291 1292 if (rr->row < 0 || rr->row >= raidPtr->numRow 1293 || rr->col < 0 || rr->col >= raidPtr->numCol) 1294 return (EINVAL); 1295 1296 1297 RF_LOCK_MUTEX(raidPtr->mutex); 1298 if ((raidPtr->Disks[rr->row][rr->col].status == 1299 rf_ds_optimal) && (raidPtr->numFailures > 0)) { 1300 /* some other component has failed. Let's not make 1301 things worse. XXX wrong for RAID6 */ 1302 RF_UNLOCK_MUTEX(raidPtr->mutex); 1303 return (EINVAL); 1304 } 1305 if (raidPtr->Disks[rr->row][rr->col].status == rf_ds_spared) { 1306 /* Can't fail a spared disk! */ 1307 RF_UNLOCK_MUTEX(raidPtr->mutex); 1308 return (EINVAL); 1309 } 1310 RF_UNLOCK_MUTEX(raidPtr->mutex); 1311 1312 /* make a copy of the recon request so that we don't rely on 1313 * the user's buffer */ 1314 RF_Malloc(rrcopy, sizeof(*rrcopy), (struct rf_recon_req *)); 1315 if (rrcopy == NULL) 1316 return(ENOMEM); 1317 memcpy(rrcopy, rr, sizeof(*rr)); 1318 rrcopy->raidPtr = (void *) raidPtr; 1319 1320 retcode = RF_CREATE_THREAD(raidPtr->recon_thread, 1321 rf_ReconThread, 1322 rrcopy,"raid_recon"); 1323 return (0); 1324 1325 /* invoke a copyback operation after recon on whatever disk 1326 * needs it, if any */ 1327 case RAIDFRAME_COPYBACK: 1328 1329 if (raidPtr->Layout.map->faultsTolerated == 0) { 1330 /* This makes no sense on a RAID 0!! */ 1331 return(EINVAL); 1332 } 1333 1334 if (raidPtr->copyback_in_progress == 1) { 1335 /* Copyback is already in progress! */ 1336 return(EINVAL); 1337 } 1338 1339 retcode = RF_CREATE_THREAD(raidPtr->copyback_thread, 1340 rf_CopybackThread, 1341 raidPtr,"raid_copyback"); 1342 return (retcode); 1343 1344 /* return the percentage completion of reconstruction */ 1345 case RAIDFRAME_CHECK_RECON_STATUS: 1346 if (raidPtr->Layout.map->faultsTolerated == 0) { 1347 /* This makes no sense on a RAID 0, so tell the 1348 user it's done. */ 1349 *(int *) data = 100; 1350 return(0); 1351 } 1352 row = 0; /* XXX we only consider a single row... */ 1353 if (raidPtr->status[row] != rf_rs_reconstructing) 1354 *(int *) data = 100; 1355 else 1356 *(int *) data = raidPtr->reconControl[row]->percentComplete; 1357 return (0); 1358 case RAIDFRAME_CHECK_RECON_STATUS_EXT: 1359 progressInfoPtr = (RF_ProgressInfo_t **) data; 1360 row = 0; /* XXX we only consider a single row... */ 1361 if (raidPtr->status[row] != rf_rs_reconstructing) { 1362 progressInfo.remaining = 0; 1363 progressInfo.completed = 100; 1364 progressInfo.total = 100; 1365 } else { 1366 progressInfo.total = 1367 raidPtr->reconControl[row]->numRUsTotal; 1368 progressInfo.completed = 1369 raidPtr->reconControl[row]->numRUsComplete; 1370 progressInfo.remaining = progressInfo.total - 1371 progressInfo.completed; 1372 } 1373 retcode = copyout((caddr_t) &progressInfo, 1374 (caddr_t) *progressInfoPtr, 1375 sizeof(RF_ProgressInfo_t)); 1376 return (retcode); 1377 1378 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS: 1379 if (raidPtr->Layout.map->faultsTolerated == 0) { 1380 /* This makes no sense on a RAID 0, so tell the 1381 user it's done. */ 1382 *(int *) data = 100; 1383 return(0); 1384 } 1385 if (raidPtr->parity_rewrite_in_progress == 1) { 1386 *(int *) data = 100 * 1387 raidPtr->parity_rewrite_stripes_done / 1388 raidPtr->Layout.numStripe; 1389 } else { 1390 *(int *) data = 100; 1391 } 1392 return (0); 1393 1394 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS_EXT: 1395 progressInfoPtr = (RF_ProgressInfo_t **) data; 1396 if (raidPtr->parity_rewrite_in_progress == 1) { 1397 progressInfo.total = raidPtr->Layout.numStripe; 1398 progressInfo.completed = 1399 raidPtr->parity_rewrite_stripes_done; 1400 progressInfo.remaining = progressInfo.total - 1401 progressInfo.completed; 1402 } else { 1403 progressInfo.remaining = 0; 1404 progressInfo.completed = 100; 1405 progressInfo.total = 100; 1406 } 1407 retcode = copyout((caddr_t) &progressInfo, 1408 (caddr_t) *progressInfoPtr, 1409 sizeof(RF_ProgressInfo_t)); 1410 return (retcode); 1411 1412 case RAIDFRAME_CHECK_COPYBACK_STATUS: 1413 if (raidPtr->Layout.map->faultsTolerated == 0) { 1414 /* This makes no sense on a RAID 0 */ 1415 *(int *) data = 100; 1416 return(0); 1417 } 1418 if (raidPtr->copyback_in_progress == 1) { 1419 *(int *) data = 100 * raidPtr->copyback_stripes_done / 1420 raidPtr->Layout.numStripe; 1421 } else { 1422 *(int *) data = 100; 1423 } 1424 return (0); 1425 1426 case RAIDFRAME_CHECK_COPYBACK_STATUS_EXT: 1427 progressInfoPtr = (RF_ProgressInfo_t **) data; 1428 if (raidPtr->copyback_in_progress == 1) { 1429 progressInfo.total = raidPtr->Layout.numStripe; 1430 progressInfo.completed = 1431 raidPtr->copyback_stripes_done; 1432 progressInfo.remaining = progressInfo.total - 1433 progressInfo.completed; 1434 } else { 1435 progressInfo.remaining = 0; 1436 progressInfo.completed = 100; 1437 progressInfo.total = 100; 1438 } 1439 retcode = copyout((caddr_t) &progressInfo, 1440 (caddr_t) *progressInfoPtr, 1441 sizeof(RF_ProgressInfo_t)); 1442 return (retcode); 1443 1444 /* the sparetable daemon calls this to wait for the kernel to 1445 * need a spare table. this ioctl does not return until a 1446 * spare table is needed. XXX -- calling mpsleep here in the 1447 * ioctl code is almost certainly wrong and evil. -- XXX XXX 1448 * -- I should either compute the spare table in the kernel, 1449 * or have a different -- XXX XXX -- interface (a different 1450 * character device) for delivering the table -- XXX */ 1451 #if 0 1452 case RAIDFRAME_SPARET_WAIT: 1453 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1454 while (!rf_sparet_wait_queue) 1455 mpsleep(&rf_sparet_wait_queue, (PZERO + 1) | PCATCH, "sparet wait", 0, (void *) simple_lock_addr(rf_sparet_wait_mutex), MS_LOCK_SIMPLE); 1456 waitreq = rf_sparet_wait_queue; 1457 rf_sparet_wait_queue = rf_sparet_wait_queue->next; 1458 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1459 1460 /* structure assignment */ 1461 *((RF_SparetWait_t *) data) = *waitreq; 1462 1463 RF_Free(waitreq, sizeof(*waitreq)); 1464 return (0); 1465 1466 /* wakes up a process waiting on SPARET_WAIT and puts an error 1467 * code in it that will cause the dameon to exit */ 1468 case RAIDFRAME_ABORT_SPARET_WAIT: 1469 RF_Malloc(waitreq, sizeof(*waitreq), (RF_SparetWait_t *)); 1470 waitreq->fcol = -1; 1471 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1472 waitreq->next = rf_sparet_wait_queue; 1473 rf_sparet_wait_queue = waitreq; 1474 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1475 wakeup(&rf_sparet_wait_queue); 1476 return (0); 1477 1478 /* used by the spare table daemon to deliver a spare table 1479 * into the kernel */ 1480 case RAIDFRAME_SEND_SPARET: 1481 1482 /* install the spare table */ 1483 retcode = rf_SetSpareTable(raidPtr, *(void **) data); 1484 1485 /* respond to the requestor. the return status of the spare 1486 * table installation is passed in the "fcol" field */ 1487 RF_Malloc(waitreq, sizeof(*waitreq), (RF_SparetWait_t *)); 1488 waitreq->fcol = retcode; 1489 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1490 waitreq->next = rf_sparet_resp_queue; 1491 rf_sparet_resp_queue = waitreq; 1492 wakeup(&rf_sparet_resp_queue); 1493 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1494 1495 return (retcode); 1496 #endif 1497 1498 default: 1499 break; /* fall through to the os-specific code below */ 1500 1501 } 1502 1503 if (!raidPtr->valid) 1504 return (EINVAL); 1505 1506 /* 1507 * Add support for "regular" device ioctls here. 1508 */ 1509 1510 switch (cmd) { 1511 case DIOCGDINFO: 1512 *(struct disklabel *) data = *(rs->sc_dkdev.dk_label); 1513 break; 1514 #ifdef __HAVE_OLD_DISKLABEL 1515 case ODIOCGDINFO: 1516 newlabel = *(rs->sc_dkdev.dk_label); 1517 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1518 return ENOTTY; 1519 memcpy(data, &newlabel, sizeof (struct olddisklabel)); 1520 break; 1521 #endif 1522 1523 case DIOCGPART: 1524 ((struct partinfo *) data)->disklab = rs->sc_dkdev.dk_label; 1525 ((struct partinfo *) data)->part = 1526 &rs->sc_dkdev.dk_label->d_partitions[DISKPART(dev)]; 1527 break; 1528 1529 case DIOCWDINFO: 1530 case DIOCSDINFO: 1531 #ifdef __HAVE_OLD_DISKLABEL 1532 case ODIOCWDINFO: 1533 case ODIOCSDINFO: 1534 #endif 1535 { 1536 struct disklabel *lp; 1537 #ifdef __HAVE_OLD_DISKLABEL 1538 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1539 memset(&newlabel, 0, sizeof newlabel); 1540 memcpy(&newlabel, data, sizeof (struct olddisklabel)); 1541 lp = &newlabel; 1542 } else 1543 #endif 1544 lp = (struct disklabel *)data; 1545 1546 if ((error = raidlock(rs)) != 0) 1547 return (error); 1548 1549 rs->sc_flags |= RAIDF_LABELLING; 1550 1551 error = setdisklabel(rs->sc_dkdev.dk_label, 1552 lp, 0, rs->sc_dkdev.dk_cpulabel); 1553 if (error == 0) { 1554 if (cmd == DIOCWDINFO 1555 #ifdef __HAVE_OLD_DISKLABEL 1556 || cmd == ODIOCWDINFO 1557 #endif 1558 ) 1559 error = writedisklabel(RAIDLABELDEV(dev), 1560 raidstrategy, rs->sc_dkdev.dk_label, 1561 rs->sc_dkdev.dk_cpulabel); 1562 } 1563 rs->sc_flags &= ~RAIDF_LABELLING; 1564 1565 raidunlock(rs); 1566 1567 if (error) 1568 return (error); 1569 break; 1570 } 1571 1572 case DIOCWLABEL: 1573 if (*(int *) data != 0) 1574 rs->sc_flags |= RAIDF_WLABEL; 1575 else 1576 rs->sc_flags &= ~RAIDF_WLABEL; 1577 break; 1578 1579 case DIOCGDEFLABEL: 1580 raidgetdefaultlabel(raidPtr, rs, (struct disklabel *) data); 1581 break; 1582 1583 #ifdef __HAVE_OLD_DISKLABEL 1584 case ODIOCGDEFLABEL: 1585 raidgetdefaultlabel(raidPtr, rs, &newlabel); 1586 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1587 return ENOTTY; 1588 memcpy(data, &newlabel, sizeof (struct olddisklabel)); 1589 break; 1590 #endif 1591 1592 default: 1593 retcode = ENOTTY; 1594 } 1595 return (retcode); 1596 1597 } 1598 1599 1600 /* raidinit -- complete the rest of the initialization for the 1601 RAIDframe device. */ 1602 1603 1604 static void 1605 raidinit(raidPtr) 1606 RF_Raid_t *raidPtr; 1607 { 1608 struct raid_softc *rs; 1609 int unit; 1610 1611 unit = raidPtr->raidid; 1612 1613 rs = &raid_softc[unit]; 1614 1615 /* XXX should check return code first... */ 1616 rs->sc_flags |= RAIDF_INITED; 1617 1618 sprintf(rs->sc_xname, "raid%d", unit); /* XXX doesn't check bounds. */ 1619 1620 rs->sc_dkdev.dk_name = rs->sc_xname; 1621 1622 /* disk_attach actually creates space for the CPU disklabel, among 1623 * other things, so it's critical to call this *BEFORE* we try putzing 1624 * with disklabels. */ 1625 1626 disk_attach(&rs->sc_dkdev); 1627 1628 /* XXX There may be a weird interaction here between this, and 1629 * protectedSectors, as used in RAIDframe. */ 1630 1631 rs->sc_size = raidPtr->totalSectors; 1632 1633 } 1634 #if (RF_INCLUDE_PARITY_DECLUSTERING_DS > 0) 1635 /* wake up the daemon & tell it to get us a spare table 1636 * XXX 1637 * the entries in the queues should be tagged with the raidPtr 1638 * so that in the extremely rare case that two recons happen at once, 1639 * we know for which device were requesting a spare table 1640 * XXX 1641 * 1642 * XXX This code is not currently used. GO 1643 */ 1644 int 1645 rf_GetSpareTableFromDaemon(req) 1646 RF_SparetWait_t *req; 1647 { 1648 int retcode; 1649 1650 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1651 req->next = rf_sparet_wait_queue; 1652 rf_sparet_wait_queue = req; 1653 wakeup(&rf_sparet_wait_queue); 1654 1655 /* mpsleep unlocks the mutex */ 1656 while (!rf_sparet_resp_queue) { 1657 tsleep(&rf_sparet_resp_queue, PRIBIO, 1658 "raidframe getsparetable", 0); 1659 } 1660 req = rf_sparet_resp_queue; 1661 rf_sparet_resp_queue = req->next; 1662 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1663 1664 retcode = req->fcol; 1665 RF_Free(req, sizeof(*req)); /* this is not the same req as we 1666 * alloc'd */ 1667 return (retcode); 1668 } 1669 #endif 1670 1671 /* a wrapper around rf_DoAccess that extracts appropriate info from the 1672 * bp & passes it down. 1673 * any calls originating in the kernel must use non-blocking I/O 1674 * do some extra sanity checking to return "appropriate" error values for 1675 * certain conditions (to make some standard utilities work) 1676 * 1677 * Formerly known as: rf_DoAccessKernel 1678 */ 1679 void 1680 raidstart(raidPtr) 1681 RF_Raid_t *raidPtr; 1682 { 1683 RF_SectorCount_t num_blocks, pb, sum; 1684 RF_RaidAddr_t raid_addr; 1685 int retcode; 1686 struct partition *pp; 1687 daddr_t blocknum; 1688 int unit; 1689 struct raid_softc *rs; 1690 int do_async; 1691 struct buf *bp; 1692 1693 unit = raidPtr->raidid; 1694 rs = &raid_softc[unit]; 1695 1696 /* quick check to see if anything has died recently */ 1697 RF_LOCK_MUTEX(raidPtr->mutex); 1698 if (raidPtr->numNewFailures > 0) { 1699 rf_update_component_labels(raidPtr, 1700 RF_NORMAL_COMPONENT_UPDATE); 1701 raidPtr->numNewFailures--; 1702 } 1703 1704 /* Check to see if we're at the limit... */ 1705 while (raidPtr->openings > 0) { 1706 RF_UNLOCK_MUTEX(raidPtr->mutex); 1707 1708 /* get the next item, if any, from the queue */ 1709 if ((bp = BUFQ_GET(&rs->buf_queue)) == NULL) { 1710 /* nothing more to do */ 1711 return; 1712 } 1713 1714 /* Ok, for the bp we have here, bp->b_blkno is relative to the 1715 * partition.. Need to make it absolute to the underlying 1716 * device.. */ 1717 1718 blocknum = bp->b_blkno; 1719 if (DISKPART(bp->b_dev) != RAW_PART) { 1720 pp = &rs->sc_dkdev.dk_label->d_partitions[DISKPART(bp->b_dev)]; 1721 blocknum += pp->p_offset; 1722 } 1723 1724 db1_printf(("Blocks: %d, %d\n", (int) bp->b_blkno, 1725 (int) blocknum)); 1726 1727 db1_printf(("bp->b_bcount = %d\n", (int) bp->b_bcount)); 1728 db1_printf(("bp->b_resid = %d\n", (int) bp->b_resid)); 1729 1730 /* *THIS* is where we adjust what block we're going to... 1731 * but DO NOT TOUCH bp->b_blkno!!! */ 1732 raid_addr = blocknum; 1733 1734 num_blocks = bp->b_bcount >> raidPtr->logBytesPerSector; 1735 pb = (bp->b_bcount & raidPtr->sectorMask) ? 1 : 0; 1736 sum = raid_addr + num_blocks + pb; 1737 if (1 || rf_debugKernelAccess) { 1738 db1_printf(("raid_addr=%d sum=%d num_blocks=%d(+%d) (%d)\n", 1739 (int) raid_addr, (int) sum, (int) num_blocks, 1740 (int) pb, (int) bp->b_resid)); 1741 } 1742 if ((sum > raidPtr->totalSectors) || (sum < raid_addr) 1743 || (sum < num_blocks) || (sum < pb)) { 1744 bp->b_error = ENOSPC; 1745 bp->b_flags |= B_ERROR; 1746 bp->b_resid = bp->b_bcount; 1747 biodone(bp); 1748 RF_LOCK_MUTEX(raidPtr->mutex); 1749 continue; 1750 } 1751 /* 1752 * XXX rf_DoAccess() should do this, not just DoAccessKernel() 1753 */ 1754 1755 if (bp->b_bcount & raidPtr->sectorMask) { 1756 bp->b_error = EINVAL; 1757 bp->b_flags |= B_ERROR; 1758 bp->b_resid = bp->b_bcount; 1759 biodone(bp); 1760 RF_LOCK_MUTEX(raidPtr->mutex); 1761 continue; 1762 1763 } 1764 db1_printf(("Calling DoAccess..\n")); 1765 1766 1767 RF_LOCK_MUTEX(raidPtr->mutex); 1768 raidPtr->openings--; 1769 RF_UNLOCK_MUTEX(raidPtr->mutex); 1770 1771 /* 1772 * Everything is async. 1773 */ 1774 do_async = 1; 1775 1776 disk_busy(&rs->sc_dkdev); 1777 1778 /* XXX we're still at splbio() here... do we *really* 1779 need to be? */ 1780 1781 /* don't ever condition on bp->b_flags & B_WRITE. 1782 * always condition on B_READ instead */ 1783 1784 retcode = rf_DoAccess(raidPtr, (bp->b_flags & B_READ) ? 1785 RF_IO_TYPE_READ : RF_IO_TYPE_WRITE, 1786 do_async, raid_addr, num_blocks, 1787 bp->b_data, bp, RF_DAG_NONBLOCKING_IO); 1788 1789 RF_LOCK_MUTEX(raidPtr->mutex); 1790 } 1791 RF_UNLOCK_MUTEX(raidPtr->mutex); 1792 } 1793 1794 1795 1796 1797 /* invoke an I/O from kernel mode. Disk queue should be locked upon entry */ 1798 1799 int 1800 rf_DispatchKernelIO(queue, req) 1801 RF_DiskQueue_t *queue; 1802 RF_DiskQueueData_t *req; 1803 { 1804 int op = (req->type == RF_IO_TYPE_READ) ? B_READ : B_WRITE; 1805 struct buf *bp; 1806 struct raidbuf *raidbp = NULL; 1807 1808 req->queue = queue; 1809 1810 #if DIAGNOSTIC 1811 if (queue->raidPtr->raidid >= numraid) { 1812 printf("Invalid unit number: %d %d\n", queue->raidPtr->raidid, 1813 numraid); 1814 panic("Invalid Unit number in rf_DispatchKernelIO"); 1815 } 1816 #endif 1817 1818 bp = req->bp; 1819 #if 1 1820 /* XXX when there is a physical disk failure, someone is passing us a 1821 * buffer that contains old stuff!! Attempt to deal with this problem 1822 * without taking a performance hit... (not sure where the real bug 1823 * is. It's buried in RAIDframe somewhere) :-( GO ) */ 1824 1825 if (bp->b_flags & B_ERROR) { 1826 bp->b_flags &= ~B_ERROR; 1827 } 1828 if (bp->b_error != 0) { 1829 bp->b_error = 0; 1830 } 1831 #endif 1832 raidbp = pool_get(&raidframe_cbufpool, PR_NOWAIT); 1833 1834 /* 1835 * context for raidiodone 1836 */ 1837 raidbp->rf_obp = bp; 1838 raidbp->req = req; 1839 1840 LIST_INIT(&raidbp->rf_buf.b_dep); 1841 1842 switch (req->type) { 1843 case RF_IO_TYPE_NOP: /* used primarily to unlock a locked queue */ 1844 /* XXX need to do something extra here.. */ 1845 /* I'm leaving this in, as I've never actually seen it used, 1846 * and I'd like folks to report it... GO */ 1847 printf(("WAKEUP CALLED\n")); 1848 queue->numOutstanding++; 1849 1850 /* XXX need to glue the original buffer into this?? */ 1851 1852 KernelWakeupFunc(&raidbp->rf_buf); 1853 break; 1854 1855 case RF_IO_TYPE_READ: 1856 case RF_IO_TYPE_WRITE: 1857 1858 if (req->tracerec) { 1859 RF_ETIMER_START(req->tracerec->timer); 1860 } 1861 InitBP(&raidbp->rf_buf, queue->rf_cinfo->ci_vp, 1862 op | bp->b_flags, queue->rf_cinfo->ci_dev, 1863 req->sectorOffset, req->numSector, 1864 req->buf, KernelWakeupFunc, (void *) req, 1865 queue->raidPtr->logBytesPerSector, req->b_proc); 1866 1867 if (rf_debugKernelAccess) { 1868 db1_printf(("dispatch: bp->b_blkno = %ld\n", 1869 (long) bp->b_blkno)); 1870 } 1871 queue->numOutstanding++; 1872 queue->last_deq_sector = req->sectorOffset; 1873 /* acc wouldn't have been let in if there were any pending 1874 * reqs at any other priority */ 1875 queue->curPriority = req->priority; 1876 1877 db1_printf(("Going for %c to unit %d row %d col %d\n", 1878 req->type, queue->raidPtr->raidid, 1879 queue->row, queue->col)); 1880 db1_printf(("sector %d count %d (%d bytes) %d\n", 1881 (int) req->sectorOffset, (int) req->numSector, 1882 (int) (req->numSector << 1883 queue->raidPtr->logBytesPerSector), 1884 (int) queue->raidPtr->logBytesPerSector)); 1885 if ((raidbp->rf_buf.b_flags & B_READ) == 0) { 1886 raidbp->rf_buf.b_vp->v_numoutput++; 1887 } 1888 VOP_STRATEGY(&raidbp->rf_buf); 1889 1890 break; 1891 1892 default: 1893 panic("bad req->type in rf_DispatchKernelIO"); 1894 } 1895 db1_printf(("Exiting from DispatchKernelIO\n")); 1896 1897 return (0); 1898 } 1899 /* this is the callback function associated with a I/O invoked from 1900 kernel code. 1901 */ 1902 static void 1903 KernelWakeupFunc(vbp) 1904 struct buf *vbp; 1905 { 1906 RF_DiskQueueData_t *req = NULL; 1907 RF_DiskQueue_t *queue; 1908 struct raidbuf *raidbp = (struct raidbuf *) vbp; 1909 struct buf *bp; 1910 int s; 1911 1912 s = splbio(); 1913 db1_printf(("recovering the request queue:\n")); 1914 req = raidbp->req; 1915 1916 bp = raidbp->rf_obp; 1917 1918 queue = (RF_DiskQueue_t *) req->queue; 1919 1920 if (raidbp->rf_buf.b_flags & B_ERROR) { 1921 bp->b_flags |= B_ERROR; 1922 bp->b_error = raidbp->rf_buf.b_error ? 1923 raidbp->rf_buf.b_error : EIO; 1924 } 1925 1926 /* XXX methinks this could be wrong... */ 1927 #if 1 1928 bp->b_resid = raidbp->rf_buf.b_resid; 1929 #endif 1930 1931 if (req->tracerec) { 1932 RF_ETIMER_STOP(req->tracerec->timer); 1933 RF_ETIMER_EVAL(req->tracerec->timer); 1934 RF_LOCK_MUTEX(rf_tracing_mutex); 1935 req->tracerec->diskwait_us += RF_ETIMER_VAL_US(req->tracerec->timer); 1936 req->tracerec->phys_io_us += RF_ETIMER_VAL_US(req->tracerec->timer); 1937 req->tracerec->num_phys_ios++; 1938 RF_UNLOCK_MUTEX(rf_tracing_mutex); 1939 } 1940 bp->b_bcount = raidbp->rf_buf.b_bcount; /* XXXX ?? */ 1941 1942 /* XXX Ok, let's get aggressive... If B_ERROR is set, let's go 1943 * ballistic, and mark the component as hosed... */ 1944 1945 if (bp->b_flags & B_ERROR) { 1946 /* Mark the disk as dead */ 1947 /* but only mark it once... */ 1948 if (queue->raidPtr->Disks[queue->row][queue->col].status == 1949 rf_ds_optimal) { 1950 printf("raid%d: IO Error. Marking %s as failed.\n", 1951 queue->raidPtr->raidid, 1952 queue->raidPtr->Disks[queue->row][queue->col].devname); 1953 queue->raidPtr->Disks[queue->row][queue->col].status = 1954 rf_ds_failed; 1955 queue->raidPtr->status[queue->row] = rf_rs_degraded; 1956 queue->raidPtr->numFailures++; 1957 queue->raidPtr->numNewFailures++; 1958 } else { /* Disk is already dead... */ 1959 /* printf("Disk already marked as dead!\n"); */ 1960 } 1961 1962 } 1963 1964 pool_put(&raidframe_cbufpool, raidbp); 1965 1966 /* Fill in the error value */ 1967 1968 req->error = (bp->b_flags & B_ERROR) ? bp->b_error : 0; 1969 1970 simple_lock(&queue->raidPtr->iodone_lock); 1971 1972 /* Drop this one on the "finished" queue... */ 1973 TAILQ_INSERT_TAIL(&(queue->raidPtr->iodone), req, iodone_entries); 1974 1975 /* Let the raidio thread know there is work to be done. */ 1976 wakeup(&(queue->raidPtr->iodone)); 1977 1978 simple_unlock(&queue->raidPtr->iodone_lock); 1979 1980 splx(s); 1981 } 1982 1983 1984 1985 /* 1986 * initialize a buf structure for doing an I/O in the kernel. 1987 */ 1988 static void 1989 InitBP(bp, b_vp, rw_flag, dev, startSect, numSect, buf, cbFunc, cbArg, 1990 logBytesPerSector, b_proc) 1991 struct buf *bp; 1992 struct vnode *b_vp; 1993 unsigned rw_flag; 1994 dev_t dev; 1995 RF_SectorNum_t startSect; 1996 RF_SectorCount_t numSect; 1997 caddr_t buf; 1998 void (*cbFunc) (struct buf *); 1999 void *cbArg; 2000 int logBytesPerSector; 2001 struct proc *b_proc; 2002 { 2003 /* bp->b_flags = B_PHYS | rw_flag; */ 2004 bp->b_flags = B_CALL | rw_flag; /* XXX need B_PHYS here too??? */ 2005 bp->b_bcount = numSect << logBytesPerSector; 2006 bp->b_bufsize = bp->b_bcount; 2007 bp->b_error = 0; 2008 bp->b_dev = dev; 2009 bp->b_data = buf; 2010 bp->b_blkno = startSect; 2011 bp->b_resid = bp->b_bcount; /* XXX is this right!??!?!! */ 2012 if (bp->b_bcount == 0) { 2013 panic("bp->b_bcount is zero in InitBP!!"); 2014 } 2015 bp->b_proc = b_proc; 2016 bp->b_iodone = cbFunc; 2017 bp->b_vp = b_vp; 2018 2019 } 2020 2021 static void 2022 raidgetdefaultlabel(raidPtr, rs, lp) 2023 RF_Raid_t *raidPtr; 2024 struct raid_softc *rs; 2025 struct disklabel *lp; 2026 { 2027 memset(lp, 0, sizeof(*lp)); 2028 2029 /* fabricate a label... */ 2030 lp->d_secperunit = raidPtr->totalSectors; 2031 lp->d_secsize = raidPtr->bytesPerSector; 2032 lp->d_nsectors = raidPtr->Layout.dataSectorsPerStripe; 2033 lp->d_ntracks = 4 * raidPtr->numCol; 2034 lp->d_ncylinders = raidPtr->totalSectors / 2035 (lp->d_nsectors * lp->d_ntracks); 2036 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 2037 2038 strncpy(lp->d_typename, "raid", sizeof(lp->d_typename)); 2039 lp->d_type = DTYPE_RAID; 2040 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2041 lp->d_rpm = 3600; 2042 lp->d_interleave = 1; 2043 lp->d_flags = 0; 2044 2045 lp->d_partitions[RAW_PART].p_offset = 0; 2046 lp->d_partitions[RAW_PART].p_size = raidPtr->totalSectors; 2047 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2048 lp->d_npartitions = RAW_PART + 1; 2049 2050 lp->d_magic = DISKMAGIC; 2051 lp->d_magic2 = DISKMAGIC; 2052 lp->d_checksum = dkcksum(rs->sc_dkdev.dk_label); 2053 2054 } 2055 /* 2056 * Read the disklabel from the raid device. If one is not present, fake one 2057 * up. 2058 */ 2059 static void 2060 raidgetdisklabel(dev) 2061 dev_t dev; 2062 { 2063 int unit = raidunit(dev); 2064 struct raid_softc *rs = &raid_softc[unit]; 2065 char *errstring; 2066 struct disklabel *lp = rs->sc_dkdev.dk_label; 2067 struct cpu_disklabel *clp = rs->sc_dkdev.dk_cpulabel; 2068 RF_Raid_t *raidPtr; 2069 2070 db1_printf(("Getting the disklabel...\n")); 2071 2072 memset(clp, 0, sizeof(*clp)); 2073 2074 raidPtr = raidPtrs[unit]; 2075 2076 raidgetdefaultlabel(raidPtr, rs, lp); 2077 2078 /* 2079 * Call the generic disklabel extraction routine. 2080 */ 2081 errstring = readdisklabel(RAIDLABELDEV(dev), raidstrategy, 2082 rs->sc_dkdev.dk_label, rs->sc_dkdev.dk_cpulabel); 2083 if (errstring) 2084 raidmakedisklabel(rs); 2085 else { 2086 int i; 2087 struct partition *pp; 2088 2089 /* 2090 * Sanity check whether the found disklabel is valid. 2091 * 2092 * This is necessary since total size of the raid device 2093 * may vary when an interleave is changed even though exactly 2094 * same componets are used, and old disklabel may used 2095 * if that is found. 2096 */ 2097 if (lp->d_secperunit != rs->sc_size) 2098 printf("raid%d: WARNING: %s: " 2099 "total sector size in disklabel (%d) != " 2100 "the size of raid (%ld)\n", unit, rs->sc_xname, 2101 lp->d_secperunit, (long) rs->sc_size); 2102 for (i = 0; i < lp->d_npartitions; i++) { 2103 pp = &lp->d_partitions[i]; 2104 if (pp->p_offset + pp->p_size > rs->sc_size) 2105 printf("raid%d: WARNING: %s: end of partition `%c' " 2106 "exceeds the size of raid (%ld)\n", 2107 unit, rs->sc_xname, 'a' + i, (long) rs->sc_size); 2108 } 2109 } 2110 2111 } 2112 /* 2113 * Take care of things one might want to take care of in the event 2114 * that a disklabel isn't present. 2115 */ 2116 static void 2117 raidmakedisklabel(rs) 2118 struct raid_softc *rs; 2119 { 2120 struct disklabel *lp = rs->sc_dkdev.dk_label; 2121 db1_printf(("Making a label..\n")); 2122 2123 /* 2124 * For historical reasons, if there's no disklabel present 2125 * the raw partition must be marked FS_BSDFFS. 2126 */ 2127 2128 lp->d_partitions[RAW_PART].p_fstype = FS_BSDFFS; 2129 2130 strncpy(lp->d_packname, "default label", sizeof(lp->d_packname)); 2131 2132 lp->d_checksum = dkcksum(lp); 2133 } 2134 /* 2135 * Lookup the provided name in the filesystem. If the file exists, 2136 * is a valid block device, and isn't being used by anyone else, 2137 * set *vpp to the file's vnode. 2138 * You'll find the original of this in ccd.c 2139 */ 2140 int 2141 raidlookup(path, p, vpp) 2142 char *path; 2143 struct proc *p; 2144 struct vnode **vpp; /* result */ 2145 { 2146 struct nameidata nd; 2147 struct vnode *vp; 2148 struct vattr va; 2149 int error; 2150 2151 NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, path, p); 2152 if ((error = vn_open(&nd, FREAD | FWRITE, 0)) != 0) { 2153 return (error); 2154 } 2155 vp = nd.ni_vp; 2156 if (vp->v_usecount > 1) { 2157 VOP_UNLOCK(vp, 0); 2158 (void) vn_close(vp, FREAD | FWRITE, p->p_ucred, p); 2159 return (EBUSY); 2160 } 2161 if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p)) != 0) { 2162 VOP_UNLOCK(vp, 0); 2163 (void) vn_close(vp, FREAD | FWRITE, p->p_ucred, p); 2164 return (error); 2165 } 2166 /* XXX: eventually we should handle VREG, too. */ 2167 if (va.va_type != VBLK) { 2168 VOP_UNLOCK(vp, 0); 2169 (void) vn_close(vp, FREAD | FWRITE, p->p_ucred, p); 2170 return (ENOTBLK); 2171 } 2172 VOP_UNLOCK(vp, 0); 2173 *vpp = vp; 2174 return (0); 2175 } 2176 /* 2177 * Wait interruptibly for an exclusive lock. 2178 * 2179 * XXX 2180 * Several drivers do this; it should be abstracted and made MP-safe. 2181 * (Hmm... where have we seen this warning before :-> GO ) 2182 */ 2183 static int 2184 raidlock(rs) 2185 struct raid_softc *rs; 2186 { 2187 int error; 2188 2189 while ((rs->sc_flags & RAIDF_LOCKED) != 0) { 2190 rs->sc_flags |= RAIDF_WANTED; 2191 if ((error = 2192 tsleep(rs, PRIBIO | PCATCH, "raidlck", 0)) != 0) 2193 return (error); 2194 } 2195 rs->sc_flags |= RAIDF_LOCKED; 2196 return (0); 2197 } 2198 /* 2199 * Unlock and wake up any waiters. 2200 */ 2201 static void 2202 raidunlock(rs) 2203 struct raid_softc *rs; 2204 { 2205 2206 rs->sc_flags &= ~RAIDF_LOCKED; 2207 if ((rs->sc_flags & RAIDF_WANTED) != 0) { 2208 rs->sc_flags &= ~RAIDF_WANTED; 2209 wakeup(rs); 2210 } 2211 } 2212 2213 2214 #define RF_COMPONENT_INFO_OFFSET 16384 /* bytes */ 2215 #define RF_COMPONENT_INFO_SIZE 1024 /* bytes */ 2216 2217 int 2218 raidmarkclean(dev_t dev, struct vnode *b_vp, int mod_counter) 2219 { 2220 RF_ComponentLabel_t clabel; 2221 raidread_component_label(dev, b_vp, &clabel); 2222 clabel.mod_counter = mod_counter; 2223 clabel.clean = RF_RAID_CLEAN; 2224 raidwrite_component_label(dev, b_vp, &clabel); 2225 return(0); 2226 } 2227 2228 2229 int 2230 raidmarkdirty(dev_t dev, struct vnode *b_vp, int mod_counter) 2231 { 2232 RF_ComponentLabel_t clabel; 2233 raidread_component_label(dev, b_vp, &clabel); 2234 clabel.mod_counter = mod_counter; 2235 clabel.clean = RF_RAID_DIRTY; 2236 raidwrite_component_label(dev, b_vp, &clabel); 2237 return(0); 2238 } 2239 2240 /* ARGSUSED */ 2241 int 2242 raidread_component_label(dev, b_vp, clabel) 2243 dev_t dev; 2244 struct vnode *b_vp; 2245 RF_ComponentLabel_t *clabel; 2246 { 2247 struct buf *bp; 2248 const struct bdevsw *bdev; 2249 int error; 2250 2251 /* XXX should probably ensure that we don't try to do this if 2252 someone has changed rf_protected_sectors. */ 2253 2254 if (b_vp == NULL) { 2255 /* For whatever reason, this component is not valid. 2256 Don't try to read a component label from it. */ 2257 return(EINVAL); 2258 } 2259 2260 /* get a block of the appropriate size... */ 2261 bp = geteblk((int)RF_COMPONENT_INFO_SIZE); 2262 bp->b_dev = dev; 2263 2264 /* get our ducks in a row for the read */ 2265 bp->b_blkno = RF_COMPONENT_INFO_OFFSET / DEV_BSIZE; 2266 bp->b_bcount = RF_COMPONENT_INFO_SIZE; 2267 bp->b_flags |= B_READ; 2268 bp->b_resid = RF_COMPONENT_INFO_SIZE / DEV_BSIZE; 2269 2270 bdev = bdevsw_lookup(bp->b_dev); 2271 if (bdev == NULL) 2272 return (ENXIO); 2273 (*bdev->d_strategy)(bp); 2274 2275 error = biowait(bp); 2276 2277 if (!error) { 2278 memcpy(clabel, bp->b_data, 2279 sizeof(RF_ComponentLabel_t)); 2280 } 2281 2282 brelse(bp); 2283 return(error); 2284 } 2285 /* ARGSUSED */ 2286 int 2287 raidwrite_component_label(dev, b_vp, clabel) 2288 dev_t dev; 2289 struct vnode *b_vp; 2290 RF_ComponentLabel_t *clabel; 2291 { 2292 struct buf *bp; 2293 const struct bdevsw *bdev; 2294 int error; 2295 2296 /* get a block of the appropriate size... */ 2297 bp = geteblk((int)RF_COMPONENT_INFO_SIZE); 2298 bp->b_dev = dev; 2299 2300 /* get our ducks in a row for the write */ 2301 bp->b_blkno = RF_COMPONENT_INFO_OFFSET / DEV_BSIZE; 2302 bp->b_bcount = RF_COMPONENT_INFO_SIZE; 2303 bp->b_flags |= B_WRITE; 2304 bp->b_resid = RF_COMPONENT_INFO_SIZE / DEV_BSIZE; 2305 2306 memset(bp->b_data, 0, RF_COMPONENT_INFO_SIZE ); 2307 2308 memcpy(bp->b_data, clabel, sizeof(RF_ComponentLabel_t)); 2309 2310 bdev = bdevsw_lookup(bp->b_dev); 2311 if (bdev == NULL) 2312 return (ENXIO); 2313 (*bdev->d_strategy)(bp); 2314 error = biowait(bp); 2315 brelse(bp); 2316 if (error) { 2317 #if 1 2318 printf("Failed to write RAID component info!\n"); 2319 #endif 2320 } 2321 2322 return(error); 2323 } 2324 2325 void 2326 rf_markalldirty(raidPtr) 2327 RF_Raid_t *raidPtr; 2328 { 2329 RF_ComponentLabel_t clabel; 2330 int sparecol; 2331 int r,c; 2332 int i,j; 2333 int srow, scol; 2334 2335 raidPtr->mod_counter++; 2336 for (r = 0; r < raidPtr->numRow; r++) { 2337 for (c = 0; c < raidPtr->numCol; c++) { 2338 /* we don't want to touch (at all) a disk that has 2339 failed */ 2340 if (!RF_DEAD_DISK(raidPtr->Disks[r][c].status)) { 2341 raidread_component_label( 2342 raidPtr->Disks[r][c].dev, 2343 raidPtr->raid_cinfo[r][c].ci_vp, 2344 &clabel); 2345 if (clabel.status == rf_ds_spared) { 2346 /* XXX do something special... 2347 but whatever you do, don't 2348 try to access it!! */ 2349 } else { 2350 raidmarkdirty( 2351 raidPtr->Disks[r][c].dev, 2352 raidPtr->raid_cinfo[r][c].ci_vp, 2353 raidPtr->mod_counter); 2354 } 2355 } 2356 } 2357 } 2358 2359 for( c = 0; c < raidPtr->numSpare ; c++) { 2360 sparecol = raidPtr->numCol + c; 2361 if (raidPtr->Disks[0][sparecol].status == rf_ds_used_spare) { 2362 /* 2363 2364 we claim this disk is "optimal" if it's 2365 rf_ds_used_spare, as that means it should be 2366 directly substitutable for the disk it replaced. 2367 We note that too... 2368 2369 */ 2370 2371 for(i=0;i<raidPtr->numRow;i++) { 2372 for(j=0;j<raidPtr->numCol;j++) { 2373 if ((raidPtr->Disks[i][j].spareRow == 2374 0) && 2375 (raidPtr->Disks[i][j].spareCol == 2376 sparecol)) { 2377 srow = i; 2378 scol = j; 2379 break; 2380 } 2381 } 2382 } 2383 2384 raidread_component_label( 2385 raidPtr->Disks[0][sparecol].dev, 2386 raidPtr->raid_cinfo[0][sparecol].ci_vp, 2387 &clabel); 2388 /* make sure status is noted */ 2389 2390 raid_init_component_label(raidPtr, &clabel); 2391 2392 clabel.row = srow; 2393 clabel.column = scol; 2394 /* Note: we *don't* change status from rf_ds_used_spare 2395 to rf_ds_optimal */ 2396 /* clabel.status = rf_ds_optimal; */ 2397 2398 raidmarkdirty(raidPtr->Disks[0][sparecol].dev, 2399 raidPtr->raid_cinfo[0][sparecol].ci_vp, 2400 raidPtr->mod_counter); 2401 } 2402 } 2403 } 2404 2405 2406 void 2407 rf_update_component_labels(raidPtr, final) 2408 RF_Raid_t *raidPtr; 2409 int final; 2410 { 2411 RF_ComponentLabel_t clabel; 2412 int sparecol; 2413 int r,c; 2414 int i,j; 2415 int srow, scol; 2416 2417 srow = -1; 2418 scol = -1; 2419 2420 /* XXX should do extra checks to make sure things really are clean, 2421 rather than blindly setting the clean bit... */ 2422 2423 raidPtr->mod_counter++; 2424 2425 for (r = 0; r < raidPtr->numRow; r++) { 2426 for (c = 0; c < raidPtr->numCol; c++) { 2427 if (raidPtr->Disks[r][c].status == rf_ds_optimal) { 2428 raidread_component_label( 2429 raidPtr->Disks[r][c].dev, 2430 raidPtr->raid_cinfo[r][c].ci_vp, 2431 &clabel); 2432 /* make sure status is noted */ 2433 clabel.status = rf_ds_optimal; 2434 /* bump the counter */ 2435 clabel.mod_counter = raidPtr->mod_counter; 2436 2437 raidwrite_component_label( 2438 raidPtr->Disks[r][c].dev, 2439 raidPtr->raid_cinfo[r][c].ci_vp, 2440 &clabel); 2441 if (final == RF_FINAL_COMPONENT_UPDATE) { 2442 if (raidPtr->parity_good == RF_RAID_CLEAN) { 2443 raidmarkclean( 2444 raidPtr->Disks[r][c].dev, 2445 raidPtr->raid_cinfo[r][c].ci_vp, 2446 raidPtr->mod_counter); 2447 } 2448 } 2449 } 2450 /* else we don't touch it.. */ 2451 } 2452 } 2453 2454 for( c = 0; c < raidPtr->numSpare ; c++) { 2455 sparecol = raidPtr->numCol + c; 2456 /* Need to ensure that the reconstruct actually completed! */ 2457 if (raidPtr->Disks[0][sparecol].status == rf_ds_used_spare) { 2458 /* 2459 2460 we claim this disk is "optimal" if it's 2461 rf_ds_used_spare, as that means it should be 2462 directly substitutable for the disk it replaced. 2463 We note that too... 2464 2465 */ 2466 2467 for(i=0;i<raidPtr->numRow;i++) { 2468 for(j=0;j<raidPtr->numCol;j++) { 2469 if ((raidPtr->Disks[i][j].spareRow == 2470 0) && 2471 (raidPtr->Disks[i][j].spareCol == 2472 sparecol)) { 2473 srow = i; 2474 scol = j; 2475 break; 2476 } 2477 } 2478 } 2479 2480 /* XXX shouldn't *really* need this... */ 2481 raidread_component_label( 2482 raidPtr->Disks[0][sparecol].dev, 2483 raidPtr->raid_cinfo[0][sparecol].ci_vp, 2484 &clabel); 2485 /* make sure status is noted */ 2486 2487 raid_init_component_label(raidPtr, &clabel); 2488 2489 clabel.mod_counter = raidPtr->mod_counter; 2490 clabel.row = srow; 2491 clabel.column = scol; 2492 clabel.status = rf_ds_optimal; 2493 2494 raidwrite_component_label( 2495 raidPtr->Disks[0][sparecol].dev, 2496 raidPtr->raid_cinfo[0][sparecol].ci_vp, 2497 &clabel); 2498 if (final == RF_FINAL_COMPONENT_UPDATE) { 2499 if (raidPtr->parity_good == RF_RAID_CLEAN) { 2500 raidmarkclean( raidPtr->Disks[0][sparecol].dev, 2501 raidPtr->raid_cinfo[0][sparecol].ci_vp, 2502 raidPtr->mod_counter); 2503 } 2504 } 2505 } 2506 } 2507 } 2508 2509 void 2510 rf_close_component(raidPtr, vp, auto_configured) 2511 RF_Raid_t *raidPtr; 2512 struct vnode *vp; 2513 int auto_configured; 2514 { 2515 struct proc *p; 2516 2517 p = raidPtr->engine_thread; 2518 2519 if (vp != NULL) { 2520 if (auto_configured == 1) { 2521 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 2522 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED, 0); 2523 vput(vp); 2524 2525 } else { 2526 (void) vn_close(vp, FREAD | FWRITE, p->p_ucred, p); 2527 } 2528 } 2529 } 2530 2531 2532 void 2533 rf_UnconfigureVnodes(raidPtr) 2534 RF_Raid_t *raidPtr; 2535 { 2536 int r,c; 2537 struct vnode *vp; 2538 int acd; 2539 2540 2541 /* We take this opportunity to close the vnodes like we should.. */ 2542 2543 for (r = 0; r < raidPtr->numRow; r++) { 2544 for (c = 0; c < raidPtr->numCol; c++) { 2545 vp = raidPtr->raid_cinfo[r][c].ci_vp; 2546 acd = raidPtr->Disks[r][c].auto_configured; 2547 rf_close_component(raidPtr, vp, acd); 2548 raidPtr->raid_cinfo[r][c].ci_vp = NULL; 2549 raidPtr->Disks[r][c].auto_configured = 0; 2550 } 2551 } 2552 for (r = 0; r < raidPtr->numSpare; r++) { 2553 vp = raidPtr->raid_cinfo[0][raidPtr->numCol + r].ci_vp; 2554 acd = raidPtr->Disks[0][raidPtr->numCol + r].auto_configured; 2555 rf_close_component(raidPtr, vp, acd); 2556 raidPtr->raid_cinfo[0][raidPtr->numCol + r].ci_vp = NULL; 2557 raidPtr->Disks[0][raidPtr->numCol + r].auto_configured = 0; 2558 } 2559 } 2560 2561 2562 void 2563 rf_ReconThread(req) 2564 struct rf_recon_req *req; 2565 { 2566 int s; 2567 RF_Raid_t *raidPtr; 2568 2569 s = splbio(); 2570 raidPtr = (RF_Raid_t *) req->raidPtr; 2571 raidPtr->recon_in_progress = 1; 2572 2573 rf_FailDisk((RF_Raid_t *) req->raidPtr, req->row, req->col, 2574 ((req->flags & RF_FDFLAGS_RECON) ? 1 : 0)); 2575 2576 /* XXX get rid of this! we don't need it at all.. */ 2577 RF_Free(req, sizeof(*req)); 2578 2579 raidPtr->recon_in_progress = 0; 2580 splx(s); 2581 2582 /* That's all... */ 2583 kthread_exit(0); /* does not return */ 2584 } 2585 2586 void 2587 rf_RewriteParityThread(raidPtr) 2588 RF_Raid_t *raidPtr; 2589 { 2590 int retcode; 2591 int s; 2592 2593 raidPtr->parity_rewrite_in_progress = 1; 2594 s = splbio(); 2595 retcode = rf_RewriteParity(raidPtr); 2596 splx(s); 2597 if (retcode) { 2598 printf("raid%d: Error re-writing parity!\n",raidPtr->raidid); 2599 } else { 2600 /* set the clean bit! If we shutdown correctly, 2601 the clean bit on each component label will get 2602 set */ 2603 raidPtr->parity_good = RF_RAID_CLEAN; 2604 } 2605 raidPtr->parity_rewrite_in_progress = 0; 2606 2607 /* Anyone waiting for us to stop? If so, inform them... */ 2608 if (raidPtr->waitShutdown) { 2609 wakeup(&raidPtr->parity_rewrite_in_progress); 2610 } 2611 2612 /* That's all... */ 2613 kthread_exit(0); /* does not return */ 2614 } 2615 2616 2617 void 2618 rf_CopybackThread(raidPtr) 2619 RF_Raid_t *raidPtr; 2620 { 2621 int s; 2622 2623 raidPtr->copyback_in_progress = 1; 2624 s = splbio(); 2625 rf_CopybackReconstructedData(raidPtr); 2626 splx(s); 2627 raidPtr->copyback_in_progress = 0; 2628 2629 /* That's all... */ 2630 kthread_exit(0); /* does not return */ 2631 } 2632 2633 2634 void 2635 rf_ReconstructInPlaceThread(req) 2636 struct rf_recon_req *req; 2637 { 2638 int retcode; 2639 int s; 2640 RF_Raid_t *raidPtr; 2641 2642 s = splbio(); 2643 raidPtr = req->raidPtr; 2644 raidPtr->recon_in_progress = 1; 2645 retcode = rf_ReconstructInPlace(raidPtr, req->row, req->col); 2646 RF_Free(req, sizeof(*req)); 2647 raidPtr->recon_in_progress = 0; 2648 splx(s); 2649 2650 /* That's all... */ 2651 kthread_exit(0); /* does not return */ 2652 } 2653 2654 RF_AutoConfig_t * 2655 rf_find_raid_components() 2656 { 2657 struct vnode *vp; 2658 struct disklabel label; 2659 struct device *dv; 2660 dev_t dev; 2661 int bmajor; 2662 int error; 2663 int i; 2664 int good_one; 2665 RF_ComponentLabel_t *clabel; 2666 RF_AutoConfig_t *ac_list; 2667 RF_AutoConfig_t *ac; 2668 2669 2670 /* initialize the AutoConfig list */ 2671 ac_list = NULL; 2672 2673 /* we begin by trolling through *all* the devices on the system */ 2674 2675 for (dv = alldevs.tqh_first; dv != NULL; 2676 dv = dv->dv_list.tqe_next) { 2677 2678 /* we are only interested in disks... */ 2679 if (dv->dv_class != DV_DISK) 2680 continue; 2681 2682 /* we don't care about floppies... */ 2683 if (!strcmp(dv->dv_cfdata->cf_name,"fd")) { 2684 continue; 2685 } 2686 2687 /* we don't care about CD's... */ 2688 if (!strcmp(dv->dv_cfdata->cf_name,"cd")) { 2689 continue; 2690 } 2691 2692 /* hdfd is the Atari/Hades floppy driver */ 2693 if (!strcmp(dv->dv_cfdata->cf_name,"hdfd")) { 2694 continue; 2695 } 2696 /* fdisa is the Atari/Milan floppy driver */ 2697 if (!strcmp(dv->dv_cfdata->cf_name,"fdisa")) { 2698 continue; 2699 } 2700 2701 /* need to find the device_name_to_block_device_major stuff */ 2702 bmajor = devsw_name2blk(dv->dv_xname, NULL, 0); 2703 2704 /* get a vnode for the raw partition of this disk */ 2705 2706 dev = MAKEDISKDEV(bmajor, dv->dv_unit, RAW_PART); 2707 if (bdevvp(dev, &vp)) 2708 panic("RAID can't alloc vnode"); 2709 2710 error = VOP_OPEN(vp, FREAD, NOCRED, 0); 2711 2712 if (error) { 2713 /* "Who cares." Continue looking 2714 for something that exists*/ 2715 vput(vp); 2716 continue; 2717 } 2718 2719 /* Ok, the disk exists. Go get the disklabel. */ 2720 error = VOP_IOCTL(vp, DIOCGDINFO, (caddr_t)&label, 2721 FREAD, NOCRED, 0); 2722 if (error) { 2723 /* 2724 * XXX can't happen - open() would 2725 * have errored out (or faked up one) 2726 */ 2727 printf("can't get label for dev %s%c (%d)!?!?\n", 2728 dv->dv_xname, 'a' + RAW_PART, error); 2729 } 2730 2731 /* don't need this any more. We'll allocate it again 2732 a little later if we really do... */ 2733 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 2734 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED, 0); 2735 vput(vp); 2736 2737 for (i=0; i < label.d_npartitions; i++) { 2738 /* We only support partitions marked as RAID */ 2739 if (label.d_partitions[i].p_fstype != FS_RAID) 2740 continue; 2741 2742 dev = MAKEDISKDEV(bmajor, dv->dv_unit, i); 2743 if (bdevvp(dev, &vp)) 2744 panic("RAID can't alloc vnode"); 2745 2746 error = VOP_OPEN(vp, FREAD, NOCRED, 0); 2747 if (error) { 2748 /* Whatever... */ 2749 vput(vp); 2750 continue; 2751 } 2752 2753 good_one = 0; 2754 2755 clabel = (RF_ComponentLabel_t *) 2756 malloc(sizeof(RF_ComponentLabel_t), 2757 M_RAIDFRAME, M_NOWAIT); 2758 if (clabel == NULL) { 2759 /* XXX CLEANUP HERE */ 2760 printf("RAID auto config: out of memory!\n"); 2761 return(NULL); /* XXX probably should panic? */ 2762 } 2763 2764 if (!raidread_component_label(dev, vp, clabel)) { 2765 /* Got the label. Does it look reasonable? */ 2766 if (rf_reasonable_label(clabel) && 2767 (clabel->partitionSize <= 2768 label.d_partitions[i].p_size)) { 2769 #if DEBUG 2770 printf("Component on: %s%c: %d\n", 2771 dv->dv_xname, 'a'+i, 2772 label.d_partitions[i].p_size); 2773 rf_print_component_label(clabel); 2774 #endif 2775 /* if it's reasonable, add it, 2776 else ignore it. */ 2777 ac = (RF_AutoConfig_t *) 2778 malloc(sizeof(RF_AutoConfig_t), 2779 M_RAIDFRAME, 2780 M_NOWAIT); 2781 if (ac == NULL) { 2782 /* XXX should panic?? */ 2783 return(NULL); 2784 } 2785 2786 sprintf(ac->devname, "%s%c", 2787 dv->dv_xname, 'a'+i); 2788 ac->dev = dev; 2789 ac->vp = vp; 2790 ac->clabel = clabel; 2791 ac->next = ac_list; 2792 ac_list = ac; 2793 good_one = 1; 2794 } 2795 } 2796 if (!good_one) { 2797 /* cleanup */ 2798 free(clabel, M_RAIDFRAME); 2799 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 2800 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED, 0); 2801 vput(vp); 2802 } 2803 } 2804 } 2805 return(ac_list); 2806 } 2807 2808 static int 2809 rf_reasonable_label(clabel) 2810 RF_ComponentLabel_t *clabel; 2811 { 2812 2813 if (((clabel->version==RF_COMPONENT_LABEL_VERSION_1) || 2814 (clabel->version==RF_COMPONENT_LABEL_VERSION)) && 2815 ((clabel->clean == RF_RAID_CLEAN) || 2816 (clabel->clean == RF_RAID_DIRTY)) && 2817 clabel->row >=0 && 2818 clabel->column >= 0 && 2819 clabel->num_rows > 0 && 2820 clabel->num_columns > 0 && 2821 clabel->row < clabel->num_rows && 2822 clabel->column < clabel->num_columns && 2823 clabel->blockSize > 0 && 2824 clabel->numBlocks > 0) { 2825 /* label looks reasonable enough... */ 2826 return(1); 2827 } 2828 return(0); 2829 } 2830 2831 2832 #if DEBUG 2833 void 2834 rf_print_component_label(clabel) 2835 RF_ComponentLabel_t *clabel; 2836 { 2837 printf(" Row: %d Column: %d Num Rows: %d Num Columns: %d\n", 2838 clabel->row, clabel->column, 2839 clabel->num_rows, clabel->num_columns); 2840 printf(" Version: %d Serial Number: %d Mod Counter: %d\n", 2841 clabel->version, clabel->serial_number, 2842 clabel->mod_counter); 2843 printf(" Clean: %s Status: %d\n", 2844 clabel->clean ? "Yes" : "No", clabel->status ); 2845 printf(" sectPerSU: %d SUsPerPU: %d SUsPerRU: %d\n", 2846 clabel->sectPerSU, clabel->SUsPerPU, clabel->SUsPerRU); 2847 printf(" RAID Level: %c blocksize: %d numBlocks: %d\n", 2848 (char) clabel->parityConfig, clabel->blockSize, 2849 clabel->numBlocks); 2850 printf(" Autoconfig: %s\n", clabel->autoconfigure ? "Yes" : "No" ); 2851 printf(" Contains root partition: %s\n", 2852 clabel->root_partition ? "Yes" : "No" ); 2853 printf(" Last configured as: raid%d\n", clabel->last_unit ); 2854 #if 0 2855 printf(" Config order: %d\n", clabel->config_order); 2856 #endif 2857 2858 } 2859 #endif 2860 2861 RF_ConfigSet_t * 2862 rf_create_auto_sets(ac_list) 2863 RF_AutoConfig_t *ac_list; 2864 { 2865 RF_AutoConfig_t *ac; 2866 RF_ConfigSet_t *config_sets; 2867 RF_ConfigSet_t *cset; 2868 RF_AutoConfig_t *ac_next; 2869 2870 2871 config_sets = NULL; 2872 2873 /* Go through the AutoConfig list, and figure out which components 2874 belong to what sets. */ 2875 ac = ac_list; 2876 while(ac!=NULL) { 2877 /* we're going to putz with ac->next, so save it here 2878 for use at the end of the loop */ 2879 ac_next = ac->next; 2880 2881 if (config_sets == NULL) { 2882 /* will need at least this one... */ 2883 config_sets = (RF_ConfigSet_t *) 2884 malloc(sizeof(RF_ConfigSet_t), 2885 M_RAIDFRAME, M_NOWAIT); 2886 if (config_sets == NULL) { 2887 panic("rf_create_auto_sets: No memory!"); 2888 } 2889 /* this one is easy :) */ 2890 config_sets->ac = ac; 2891 config_sets->next = NULL; 2892 config_sets->rootable = 0; 2893 ac->next = NULL; 2894 } else { 2895 /* which set does this component fit into? */ 2896 cset = config_sets; 2897 while(cset!=NULL) { 2898 if (rf_does_it_fit(cset, ac)) { 2899 /* looks like it matches... */ 2900 ac->next = cset->ac; 2901 cset->ac = ac; 2902 break; 2903 } 2904 cset = cset->next; 2905 } 2906 if (cset==NULL) { 2907 /* didn't find a match above... new set..*/ 2908 cset = (RF_ConfigSet_t *) 2909 malloc(sizeof(RF_ConfigSet_t), 2910 M_RAIDFRAME, M_NOWAIT); 2911 if (cset == NULL) { 2912 panic("rf_create_auto_sets: No memory!"); 2913 } 2914 cset->ac = ac; 2915 ac->next = NULL; 2916 cset->next = config_sets; 2917 cset->rootable = 0; 2918 config_sets = cset; 2919 } 2920 } 2921 ac = ac_next; 2922 } 2923 2924 2925 return(config_sets); 2926 } 2927 2928 static int 2929 rf_does_it_fit(cset, ac) 2930 RF_ConfigSet_t *cset; 2931 RF_AutoConfig_t *ac; 2932 { 2933 RF_ComponentLabel_t *clabel1, *clabel2; 2934 2935 /* If this one matches the *first* one in the set, that's good 2936 enough, since the other members of the set would have been 2937 through here too... */ 2938 /* note that we are not checking partitionSize here.. 2939 2940 Note that we are also not checking the mod_counters here. 2941 If everything else matches execpt the mod_counter, that's 2942 good enough for this test. We will deal with the mod_counters 2943 a little later in the autoconfiguration process. 2944 2945 (clabel1->mod_counter == clabel2->mod_counter) && 2946 2947 The reason we don't check for this is that failed disks 2948 will have lower modification counts. If those disks are 2949 not added to the set they used to belong to, then they will 2950 form their own set, which may result in 2 different sets, 2951 for example, competing to be configured at raid0, and 2952 perhaps competing to be the root filesystem set. If the 2953 wrong ones get configured, or both attempt to become /, 2954 weird behaviour and or serious lossage will occur. Thus we 2955 need to bring them into the fold here, and kick them out at 2956 a later point. 2957 2958 */ 2959 2960 clabel1 = cset->ac->clabel; 2961 clabel2 = ac->clabel; 2962 if ((clabel1->version == clabel2->version) && 2963 (clabel1->serial_number == clabel2->serial_number) && 2964 (clabel1->num_rows == clabel2->num_rows) && 2965 (clabel1->num_columns == clabel2->num_columns) && 2966 (clabel1->sectPerSU == clabel2->sectPerSU) && 2967 (clabel1->SUsPerPU == clabel2->SUsPerPU) && 2968 (clabel1->SUsPerRU == clabel2->SUsPerRU) && 2969 (clabel1->parityConfig == clabel2->parityConfig) && 2970 (clabel1->maxOutstanding == clabel2->maxOutstanding) && 2971 (clabel1->blockSize == clabel2->blockSize) && 2972 (clabel1->numBlocks == clabel2->numBlocks) && 2973 (clabel1->autoconfigure == clabel2->autoconfigure) && 2974 (clabel1->root_partition == clabel2->root_partition) && 2975 (clabel1->last_unit == clabel2->last_unit) && 2976 (clabel1->config_order == clabel2->config_order)) { 2977 /* if it get's here, it almost *has* to be a match */ 2978 } else { 2979 /* it's not consistent with somebody in the set.. 2980 punt */ 2981 return(0); 2982 } 2983 /* all was fine.. it must fit... */ 2984 return(1); 2985 } 2986 2987 int 2988 rf_have_enough_components(cset) 2989 RF_ConfigSet_t *cset; 2990 { 2991 RF_AutoConfig_t *ac; 2992 RF_AutoConfig_t *auto_config; 2993 RF_ComponentLabel_t *clabel; 2994 int r,c; 2995 int num_rows; 2996 int num_cols; 2997 int num_missing; 2998 int mod_counter; 2999 int mod_counter_found; 3000 int even_pair_failed; 3001 char parity_type; 3002 3003 3004 /* check to see that we have enough 'live' components 3005 of this set. If so, we can configure it if necessary */ 3006 3007 num_rows = cset->ac->clabel->num_rows; 3008 num_cols = cset->ac->clabel->num_columns; 3009 parity_type = cset->ac->clabel->parityConfig; 3010 3011 /* XXX Check for duplicate components!?!?!? */ 3012 3013 /* Determine what the mod_counter is supposed to be for this set. */ 3014 3015 mod_counter_found = 0; 3016 mod_counter = 0; 3017 ac = cset->ac; 3018 while(ac!=NULL) { 3019 if (mod_counter_found==0) { 3020 mod_counter = ac->clabel->mod_counter; 3021 mod_counter_found = 1; 3022 } else { 3023 if (ac->clabel->mod_counter > mod_counter) { 3024 mod_counter = ac->clabel->mod_counter; 3025 } 3026 } 3027 ac = ac->next; 3028 } 3029 3030 num_missing = 0; 3031 auto_config = cset->ac; 3032 3033 for(r=0; r<num_rows; r++) { 3034 even_pair_failed = 0; 3035 for(c=0; c<num_cols; c++) { 3036 ac = auto_config; 3037 while(ac!=NULL) { 3038 if ((ac->clabel->row == r) && 3039 (ac->clabel->column == c) && 3040 (ac->clabel->mod_counter == mod_counter)) { 3041 /* it's this one... */ 3042 #if DEBUG 3043 printf("Found: %s at %d,%d\n", 3044 ac->devname,r,c); 3045 #endif 3046 break; 3047 } 3048 ac=ac->next; 3049 } 3050 if (ac==NULL) { 3051 /* Didn't find one here! */ 3052 /* special case for RAID 1, especially 3053 where there are more than 2 3054 components (where RAIDframe treats 3055 things a little differently :( ) */ 3056 if (parity_type == '1') { 3057 if (c%2 == 0) { /* even component */ 3058 even_pair_failed = 1; 3059 } else { /* odd component. If 3060 we're failed, and 3061 so is the even 3062 component, it's 3063 "Good Night, Charlie" */ 3064 if (even_pair_failed == 1) { 3065 return(0); 3066 } 3067 } 3068 } else { 3069 /* normal accounting */ 3070 num_missing++; 3071 } 3072 } 3073 if ((parity_type == '1') && (c%2 == 1)) { 3074 /* Just did an even component, and we didn't 3075 bail.. reset the even_pair_failed flag, 3076 and go on to the next component.... */ 3077 even_pair_failed = 0; 3078 } 3079 } 3080 } 3081 3082 clabel = cset->ac->clabel; 3083 3084 if (((clabel->parityConfig == '0') && (num_missing > 0)) || 3085 ((clabel->parityConfig == '4') && (num_missing > 1)) || 3086 ((clabel->parityConfig == '5') && (num_missing > 1))) { 3087 /* XXX this needs to be made *much* more general */ 3088 /* Too many failures */ 3089 return(0); 3090 } 3091 /* otherwise, all is well, and we've got enough to take a kick 3092 at autoconfiguring this set */ 3093 return(1); 3094 } 3095 3096 void 3097 rf_create_configuration(ac,config,raidPtr) 3098 RF_AutoConfig_t *ac; 3099 RF_Config_t *config; 3100 RF_Raid_t *raidPtr; 3101 { 3102 RF_ComponentLabel_t *clabel; 3103 int i; 3104 3105 clabel = ac->clabel; 3106 3107 /* 1. Fill in the common stuff */ 3108 config->numRow = clabel->num_rows; 3109 config->numCol = clabel->num_columns; 3110 config->numSpare = 0; /* XXX should this be set here? */ 3111 config->sectPerSU = clabel->sectPerSU; 3112 config->SUsPerPU = clabel->SUsPerPU; 3113 config->SUsPerRU = clabel->SUsPerRU; 3114 config->parityConfig = clabel->parityConfig; 3115 /* XXX... */ 3116 strcpy(config->diskQueueType,"fifo"); 3117 config->maxOutstandingDiskReqs = clabel->maxOutstanding; 3118 config->layoutSpecificSize = 0; /* XXX ?? */ 3119 3120 while(ac!=NULL) { 3121 /* row/col values will be in range due to the checks 3122 in reasonable_label() */ 3123 strcpy(config->devnames[ac->clabel->row][ac->clabel->column], 3124 ac->devname); 3125 ac = ac->next; 3126 } 3127 3128 for(i=0;i<RF_MAXDBGV;i++) { 3129 config->debugVars[i][0] = NULL; 3130 } 3131 } 3132 3133 int 3134 rf_set_autoconfig(raidPtr, new_value) 3135 RF_Raid_t *raidPtr; 3136 int new_value; 3137 { 3138 RF_ComponentLabel_t clabel; 3139 struct vnode *vp; 3140 dev_t dev; 3141 int row, column; 3142 int sparecol; 3143 3144 raidPtr->autoconfigure = new_value; 3145 for(row=0; row<raidPtr->numRow; row++) { 3146 for(column=0; column<raidPtr->numCol; column++) { 3147 if (raidPtr->Disks[row][column].status == 3148 rf_ds_optimal) { 3149 dev = raidPtr->Disks[row][column].dev; 3150 vp = raidPtr->raid_cinfo[row][column].ci_vp; 3151 raidread_component_label(dev, vp, &clabel); 3152 clabel.autoconfigure = new_value; 3153 raidwrite_component_label(dev, vp, &clabel); 3154 } 3155 } 3156 } 3157 for(column = 0; column < raidPtr->numSpare ; column++) { 3158 sparecol = raidPtr->numCol + column; 3159 if (raidPtr->Disks[0][sparecol].status == rf_ds_used_spare) { 3160 dev = raidPtr->Disks[0][sparecol].dev; 3161 vp = raidPtr->raid_cinfo[0][sparecol].ci_vp; 3162 raidread_component_label(dev, vp, &clabel); 3163 clabel.autoconfigure = new_value; 3164 raidwrite_component_label(dev, vp, &clabel); 3165 } 3166 } 3167 return(new_value); 3168 } 3169 3170 int 3171 rf_set_rootpartition(raidPtr, new_value) 3172 RF_Raid_t *raidPtr; 3173 int new_value; 3174 { 3175 RF_ComponentLabel_t clabel; 3176 struct vnode *vp; 3177 dev_t dev; 3178 int row, column; 3179 int sparecol; 3180 3181 raidPtr->root_partition = new_value; 3182 for(row=0; row<raidPtr->numRow; row++) { 3183 for(column=0; column<raidPtr->numCol; column++) { 3184 if (raidPtr->Disks[row][column].status == 3185 rf_ds_optimal) { 3186 dev = raidPtr->Disks[row][column].dev; 3187 vp = raidPtr->raid_cinfo[row][column].ci_vp; 3188 raidread_component_label(dev, vp, &clabel); 3189 clabel.root_partition = new_value; 3190 raidwrite_component_label(dev, vp, &clabel); 3191 } 3192 } 3193 } 3194 for(column = 0; column < raidPtr->numSpare ; column++) { 3195 sparecol = raidPtr->numCol + column; 3196 if (raidPtr->Disks[0][sparecol].status == rf_ds_used_spare) { 3197 dev = raidPtr->Disks[0][sparecol].dev; 3198 vp = raidPtr->raid_cinfo[0][sparecol].ci_vp; 3199 raidread_component_label(dev, vp, &clabel); 3200 clabel.root_partition = new_value; 3201 raidwrite_component_label(dev, vp, &clabel); 3202 } 3203 } 3204 return(new_value); 3205 } 3206 3207 void 3208 rf_release_all_vps(cset) 3209 RF_ConfigSet_t *cset; 3210 { 3211 RF_AutoConfig_t *ac; 3212 3213 ac = cset->ac; 3214 while(ac!=NULL) { 3215 /* Close the vp, and give it back */ 3216 if (ac->vp) { 3217 vn_lock(ac->vp, LK_EXCLUSIVE | LK_RETRY); 3218 VOP_CLOSE(ac->vp, FREAD, NOCRED, 0); 3219 vput(ac->vp); 3220 ac->vp = NULL; 3221 } 3222 ac = ac->next; 3223 } 3224 } 3225 3226 3227 void 3228 rf_cleanup_config_set(cset) 3229 RF_ConfigSet_t *cset; 3230 { 3231 RF_AutoConfig_t *ac; 3232 RF_AutoConfig_t *next_ac; 3233 3234 ac = cset->ac; 3235 while(ac!=NULL) { 3236 next_ac = ac->next; 3237 /* nuke the label */ 3238 free(ac->clabel, M_RAIDFRAME); 3239 /* cleanup the config structure */ 3240 free(ac, M_RAIDFRAME); 3241 /* "next.." */ 3242 ac = next_ac; 3243 } 3244 /* and, finally, nuke the config set */ 3245 free(cset, M_RAIDFRAME); 3246 } 3247 3248 3249 void 3250 raid_init_component_label(raidPtr, clabel) 3251 RF_Raid_t *raidPtr; 3252 RF_ComponentLabel_t *clabel; 3253 { 3254 /* current version number */ 3255 clabel->version = RF_COMPONENT_LABEL_VERSION; 3256 clabel->serial_number = raidPtr->serial_number; 3257 clabel->mod_counter = raidPtr->mod_counter; 3258 clabel->num_rows = raidPtr->numRow; 3259 clabel->num_columns = raidPtr->numCol; 3260 clabel->clean = RF_RAID_DIRTY; /* not clean */ 3261 clabel->status = rf_ds_optimal; /* "It's good!" */ 3262 3263 clabel->sectPerSU = raidPtr->Layout.sectorsPerStripeUnit; 3264 clabel->SUsPerPU = raidPtr->Layout.SUsPerPU; 3265 clabel->SUsPerRU = raidPtr->Layout.SUsPerRU; 3266 3267 clabel->blockSize = raidPtr->bytesPerSector; 3268 clabel->numBlocks = raidPtr->sectorsPerDisk; 3269 3270 /* XXX not portable */ 3271 clabel->parityConfig = raidPtr->Layout.map->parityConfig; 3272 clabel->maxOutstanding = raidPtr->maxOutstanding; 3273 clabel->autoconfigure = raidPtr->autoconfigure; 3274 clabel->root_partition = raidPtr->root_partition; 3275 clabel->last_unit = raidPtr->raidid; 3276 clabel->config_order = raidPtr->config_order; 3277 } 3278 3279 int 3280 rf_auto_config_set(cset,unit) 3281 RF_ConfigSet_t *cset; 3282 int *unit; 3283 { 3284 RF_Raid_t *raidPtr; 3285 RF_Config_t *config; 3286 int raidID; 3287 int retcode; 3288 3289 #if DEBUG 3290 printf("RAID autoconfigure\n"); 3291 #endif 3292 3293 retcode = 0; 3294 *unit = -1; 3295 3296 /* 1. Create a config structure */ 3297 3298 config = (RF_Config_t *)malloc(sizeof(RF_Config_t), 3299 M_RAIDFRAME, 3300 M_NOWAIT); 3301 if (config==NULL) { 3302 printf("Out of mem!?!?\n"); 3303 /* XXX do something more intelligent here. */ 3304 return(1); 3305 } 3306 3307 memset(config, 0, sizeof(RF_Config_t)); 3308 3309 /* 3310 2. Figure out what RAID ID this one is supposed to live at 3311 See if we can get the same RAID dev that it was configured 3312 on last time.. 3313 */ 3314 3315 raidID = cset->ac->clabel->last_unit; 3316 if ((raidID < 0) || (raidID >= numraid)) { 3317 /* let's not wander off into lala land. */ 3318 raidID = numraid - 1; 3319 } 3320 if (raidPtrs[raidID]->valid != 0) { 3321 3322 /* 3323 Nope... Go looking for an alternative... 3324 Start high so we don't immediately use raid0 if that's 3325 not taken. 3326 */ 3327 3328 for(raidID = numraid - 1; raidID >= 0; raidID--) { 3329 if (raidPtrs[raidID]->valid == 0) { 3330 /* can use this one! */ 3331 break; 3332 } 3333 } 3334 } 3335 3336 if (raidID < 0) { 3337 /* punt... */ 3338 printf("Unable to auto configure this set!\n"); 3339 printf("(Out of RAID devs!)\n"); 3340 return(1); 3341 } 3342 3343 #if DEBUG 3344 printf("Configuring raid%d:\n",raidID); 3345 #endif 3346 3347 raidPtr = raidPtrs[raidID]; 3348 3349 /* XXX all this stuff should be done SOMEWHERE ELSE! */ 3350 raidPtr->raidid = raidID; 3351 raidPtr->openings = RAIDOUTSTANDING; 3352 3353 /* 3. Build the configuration structure */ 3354 rf_create_configuration(cset->ac, config, raidPtr); 3355 3356 /* 4. Do the configuration */ 3357 retcode = rf_Configure(raidPtr, config, cset->ac); 3358 3359 if (retcode == 0) { 3360 3361 raidinit(raidPtrs[raidID]); 3362 3363 rf_markalldirty(raidPtrs[raidID]); 3364 raidPtrs[raidID]->autoconfigure = 1; /* XXX do this here? */ 3365 if (cset->ac->clabel->root_partition==1) { 3366 /* everything configured just fine. Make a note 3367 that this set is eligible to be root. */ 3368 cset->rootable = 1; 3369 /* XXX do this here? */ 3370 raidPtrs[raidID]->root_partition = 1; 3371 } 3372 } 3373 3374 /* 5. Cleanup */ 3375 free(config, M_RAIDFRAME); 3376 3377 *unit = raidID; 3378 return(retcode); 3379 } 3380 3381 void 3382 rf_disk_unbusy(desc) 3383 RF_RaidAccessDesc_t *desc; 3384 { 3385 struct buf *bp; 3386 3387 bp = (struct buf *)desc->bp; 3388 disk_unbusy(&raid_softc[desc->raidPtr->raidid].sc_dkdev, 3389 (bp->b_bcount - bp->b_resid), (bp->b_flags & B_READ)); 3390 } 3391
Indexes created Mon Sep 29 18:09:42 GMT 2025