rf_netbsdkintf.c revision 1.117.6.1
1 /* $NetBSD: rf_netbsdkintf.c,v 1.117.6.1 2002/05/16 11:47:15 gehenna 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 1.117.6.1 2002/05/16 11:47:15 gehenna 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_acctrace.h" 149 #include "rf_etimer.h" 150 #include "rf_general.h" 151 #include "rf_debugMem.h" 152 #include "rf_kintf.h" 153 #include "rf_options.h" 154 #include "rf_driver.h" 155 #include "rf_parityscan.h" 156 #include "rf_debugprint.h" 157 #include "rf_threadstuff.h" 158 159 int rf_kdebug_level = 0; 160 161 #ifdef DEBUG 162 #define db1_printf(a) if (rf_kdebug_level > 0) printf a 163 #else /* DEBUG */ 164 #define db1_printf(a) { } 165 #endif /* DEBUG */ 166 167 static RF_Raid_t **raidPtrs; /* global raid device descriptors */ 168 169 RF_DECLARE_STATIC_MUTEX(rf_sparet_wait_mutex) 170 171 static RF_SparetWait_t *rf_sparet_wait_queue; /* requests to install a 172 * spare table */ 173 static RF_SparetWait_t *rf_sparet_resp_queue; /* responses from 174 * installation process */ 175 176 /* prototypes */ 177 static void KernelWakeupFunc(struct buf * bp); 178 static void InitBP(struct buf * bp, struct vnode *, unsigned rw_flag, 179 dev_t dev, RF_SectorNum_t startSect, 180 RF_SectorCount_t numSect, caddr_t buf, 181 void (*cbFunc) (struct buf *), void *cbArg, 182 int logBytesPerSector, struct proc * b_proc); 183 static void raidinit(RF_Raid_t *); 184 185 void raidattach(int); 186 187 dev_type_open(raidopen); 188 dev_type_close(raidclose); 189 dev_type_read(raidread); 190 dev_type_write(raidwrite); 191 dev_type_ioctl(raidioctl); 192 dev_type_strategy(raidstrategy); 193 dev_type_dump(raiddump); 194 dev_type_size(raidsize); 195 196 const struct bdevsw raid_bdevsw = { 197 raidopen, raidclose, raidstrategy, raidioctl, 198 raiddump, raidsize, D_DISK 199 }; 200 201 const struct cdevsw raid_cdevsw = { 202 raidopen, raidclose, raidread, raidwrite, raidioctl, 203 nostop, notty, nopoll, nommap, D_DISK 204 }; 205 206 /* 207 * Pilfered from ccd.c 208 */ 209 210 struct raidbuf { 211 struct buf rf_buf; /* new I/O buf. MUST BE FIRST!!! */ 212 struct buf *rf_obp; /* ptr. to original I/O buf */ 213 int rf_flags; /* misc. flags */ 214 RF_DiskQueueData_t *req;/* the request that this was part of.. */ 215 }; 216 217 /* component buffer pool */ 218 struct pool raidframe_cbufpool; 219 220 #define RAIDGETBUF(rs) pool_get(&raidframe_cbufpool, PR_NOWAIT) 221 #define RAIDPUTBUF(rs, cbp) pool_put(&raidframe_cbufpool, cbp) 222 223 /* XXX Not sure if the following should be replacing the raidPtrs above, 224 or if it should be used in conjunction with that... 225 */ 226 227 struct raid_softc { 228 int sc_flags; /* flags */ 229 int sc_cflags; /* configuration flags */ 230 size_t sc_size; /* size of the raid device */ 231 char sc_xname[20]; /* XXX external name */ 232 struct disk sc_dkdev; /* generic disk device info */ 233 struct buf_queue buf_queue; /* used for the device queue */ 234 }; 235 /* sc_flags */ 236 #define RAIDF_INITED 0x01 /* unit has been initialized */ 237 #define RAIDF_WLABEL 0x02 /* label area is writable */ 238 #define RAIDF_LABELLING 0x04 /* unit is currently being labelled */ 239 #define RAIDF_WANTED 0x40 /* someone is waiting to obtain a lock */ 240 #define RAIDF_LOCKED 0x80 /* unit is locked */ 241 242 #define raidunit(x) DISKUNIT(x) 243 int numraid = 0; 244 245 /* 246 * Allow RAIDOUTSTANDING number of simultaneous IO's to this RAID device. 247 * Be aware that large numbers can allow the driver to consume a lot of 248 * kernel memory, especially on writes, and in degraded mode reads. 249 * 250 * For example: with a stripe width of 64 blocks (32k) and 5 disks, 251 * a single 64K write will typically require 64K for the old data, 252 * 64K for the old parity, and 64K for the new parity, for a total 253 * of 192K (if the parity buffer is not re-used immediately). 254 * Even it if is used immediately, that's still 128K, which when multiplied 255 * by say 10 requests, is 1280K, *on top* of the 640K of incoming data. 256 * 257 * Now in degraded mode, for example, a 64K read on the above setup may 258 * require data reconstruction, which will require *all* of the 4 remaining 259 * disks to participate -- 4 * 32K/disk == 128K again. 260 */ 261 262 #ifndef RAIDOUTSTANDING 263 #define RAIDOUTSTANDING 6 264 #endif 265 266 #define RAIDLABELDEV(dev) \ 267 (MAKEDISKDEV(major((dev)), raidunit((dev)), RAW_PART)) 268 269 /* declared here, and made public, for the benefit of KVM stuff.. */ 270 struct raid_softc *raid_softc; 271 272 static void raidgetdefaultlabel(RF_Raid_t *, struct raid_softc *, 273 struct disklabel *); 274 static void raidgetdisklabel(dev_t); 275 static void raidmakedisklabel(struct raid_softc *); 276 277 static int raidlock(struct raid_softc *); 278 static void raidunlock(struct raid_softc *); 279 280 static void rf_markalldirty(RF_Raid_t *); 281 void rf_mountroot_hook(struct device *); 282 283 struct device *raidrootdev; 284 285 void rf_ReconThread(struct rf_recon_req *); 286 /* XXX what I want is: */ 287 /*void rf_ReconThread(RF_Raid_t *raidPtr); */ 288 void rf_RewriteParityThread(RF_Raid_t *raidPtr); 289 void rf_CopybackThread(RF_Raid_t *raidPtr); 290 void rf_ReconstructInPlaceThread(struct rf_recon_req *); 291 void rf_buildroothack(void *); 292 293 RF_AutoConfig_t *rf_find_raid_components(void); 294 RF_ConfigSet_t *rf_create_auto_sets(RF_AutoConfig_t *); 295 static int rf_does_it_fit(RF_ConfigSet_t *,RF_AutoConfig_t *); 296 static int rf_reasonable_label(RF_ComponentLabel_t *); 297 void rf_create_configuration(RF_AutoConfig_t *,RF_Config_t *, RF_Raid_t *); 298 int rf_set_autoconfig(RF_Raid_t *, int); 299 int rf_set_rootpartition(RF_Raid_t *, int); 300 void rf_release_all_vps(RF_ConfigSet_t *); 301 void rf_cleanup_config_set(RF_ConfigSet_t *); 302 int rf_have_enough_components(RF_ConfigSet_t *); 303 int rf_auto_config_set(RF_ConfigSet_t *, int *); 304 305 static int raidautoconfig = 0; /* Debugging, mostly. Set to 0 to not 306 allow autoconfig to take place. 307 Note that this is overridden by having 308 RAID_AUTOCONFIG as an option in the 309 kernel config file. */ 310 311 void 312 raidattach(num) 313 int num; 314 { 315 int raidID; 316 int i, rc; 317 RF_AutoConfig_t *ac_list; /* autoconfig list */ 318 RF_ConfigSet_t *config_sets; 319 320 #ifdef DEBUG 321 printf("raidattach: Asked for %d units\n", num); 322 #endif 323 324 if (num <= 0) { 325 #ifdef DIAGNOSTIC 326 panic("raidattach: count <= 0"); 327 #endif 328 return; 329 } 330 /* This is where all the initialization stuff gets done. */ 331 332 numraid = num; 333 334 /* Make some space for requested number of units... */ 335 336 RF_Calloc(raidPtrs, num, sizeof(RF_Raid_t *), (RF_Raid_t **)); 337 if (raidPtrs == NULL) { 338 panic("raidPtrs is NULL!!\n"); 339 } 340 341 /* Initialize the component buffer pool. */ 342 pool_init(&raidframe_cbufpool, sizeof(struct raidbuf), 0, 343 0, 0, "raidpl", NULL); 344 345 rc = rf_mutex_init(&rf_sparet_wait_mutex); 346 if (rc) { 347 RF_PANIC(); 348 } 349 350 rf_sparet_wait_queue = rf_sparet_resp_queue = NULL; 351 352 for (i = 0; i < num; i++) 353 raidPtrs[i] = NULL; 354 rc = rf_BootRaidframe(); 355 if (rc == 0) 356 printf("Kernelized RAIDframe activated\n"); 357 else 358 panic("Serious error booting RAID!!\n"); 359 360 /* put together some datastructures like the CCD device does.. This 361 * lets us lock the device and what-not when it gets opened. */ 362 363 raid_softc = (struct raid_softc *) 364 malloc(num * sizeof(struct raid_softc), 365 M_RAIDFRAME, M_NOWAIT); 366 if (raid_softc == NULL) { 367 printf("WARNING: no memory for RAIDframe driver\n"); 368 return; 369 } 370 371 memset(raid_softc, 0, num * sizeof(struct raid_softc)); 372 373 raidrootdev = (struct device *)malloc(num * sizeof(struct device), 374 M_RAIDFRAME, M_NOWAIT); 375 if (raidrootdev == NULL) { 376 panic("No memory for RAIDframe driver!!?!?!\n"); 377 } 378 379 for (raidID = 0; raidID < num; raidID++) { 380 BUFQ_INIT(&raid_softc[raidID].buf_queue); 381 382 raidrootdev[raidID].dv_class = DV_DISK; 383 raidrootdev[raidID].dv_cfdata = NULL; 384 raidrootdev[raidID].dv_unit = raidID; 385 raidrootdev[raidID].dv_parent = NULL; 386 raidrootdev[raidID].dv_flags = 0; 387 sprintf(raidrootdev[raidID].dv_xname,"raid%d",raidID); 388 389 RF_Calloc(raidPtrs[raidID], 1, sizeof(RF_Raid_t), 390 (RF_Raid_t *)); 391 if (raidPtrs[raidID] == NULL) { 392 printf("WARNING: raidPtrs[%d] is NULL\n", raidID); 393 numraid = raidID; 394 return; 395 } 396 } 397 398 #ifdef RAID_AUTOCONFIG 399 raidautoconfig = 1; 400 #endif 401 402 if (raidautoconfig) { 403 /* 1. locate all RAID components on the system */ 404 405 #if DEBUG 406 printf("Searching for raid components...\n"); 407 #endif 408 ac_list = rf_find_raid_components(); 409 410 /* 2. sort them into their respective sets */ 411 412 config_sets = rf_create_auto_sets(ac_list); 413 414 /* 3. evaluate each set and configure the valid ones 415 This gets done in rf_buildroothack() */ 416 417 /* schedule the creation of the thread to do the 418 "/ on RAID" stuff */ 419 420 kthread_create(rf_buildroothack,config_sets); 421 422 #if 0 423 mountroothook_establish(rf_mountroot_hook, &raidrootdev[0]); 424 #endif 425 } 426 427 } 428 429 void 430 rf_buildroothack(arg) 431 void *arg; 432 { 433 RF_ConfigSet_t *config_sets = arg; 434 RF_ConfigSet_t *cset; 435 RF_ConfigSet_t *next_cset; 436 int retcode; 437 int raidID; 438 int rootID; 439 int num_root; 440 441 rootID = 0; 442 num_root = 0; 443 cset = config_sets; 444 while(cset != NULL ) { 445 next_cset = cset->next; 446 if (rf_have_enough_components(cset) && 447 cset->ac->clabel->autoconfigure==1) { 448 retcode = rf_auto_config_set(cset,&raidID); 449 if (!retcode) { 450 if (cset->rootable) { 451 rootID = raidID; 452 num_root++; 453 } 454 } else { 455 /* The autoconfig didn't work :( */ 456 #if DEBUG 457 printf("Autoconfig failed with code %d for raid%d\n", retcode, raidID); 458 #endif 459 rf_release_all_vps(cset); 460 } 461 } else { 462 /* we're not autoconfiguring this set... 463 release the associated resources */ 464 rf_release_all_vps(cset); 465 } 466 /* cleanup */ 467 rf_cleanup_config_set(cset); 468 cset = next_cset; 469 } 470 if (boothowto & RB_ASKNAME) { 471 /* We don't auto-config... */ 472 } else { 473 /* They didn't ask, and we found something bootable... */ 474 475 if (num_root == 1) { 476 booted_device = &raidrootdev[rootID]; 477 } else if (num_root > 1) { 478 /* we can't guess.. require the user to answer... */ 479 boothowto |= RB_ASKNAME; 480 } 481 } 482 } 483 484 485 int 486 raidsize(dev) 487 dev_t dev; 488 { 489 struct raid_softc *rs; 490 struct disklabel *lp; 491 int part, unit, omask, size; 492 493 unit = raidunit(dev); 494 if (unit >= numraid) 495 return (-1); 496 rs = &raid_softc[unit]; 497 498 if ((rs->sc_flags & RAIDF_INITED) == 0) 499 return (-1); 500 501 part = DISKPART(dev); 502 omask = rs->sc_dkdev.dk_openmask & (1 << part); 503 lp = rs->sc_dkdev.dk_label; 504 505 if (omask == 0 && raidopen(dev, 0, S_IFBLK, curproc)) 506 return (-1); 507 508 if (lp->d_partitions[part].p_fstype != FS_SWAP) 509 size = -1; 510 else 511 size = lp->d_partitions[part].p_size * 512 (lp->d_secsize / DEV_BSIZE); 513 514 if (omask == 0 && raidclose(dev, 0, S_IFBLK, curproc)) 515 return (-1); 516 517 return (size); 518 519 } 520 521 int 522 raiddump(dev, blkno, va, size) 523 dev_t dev; 524 daddr_t blkno; 525 caddr_t va; 526 size_t size; 527 { 528 /* Not implemented. */ 529 return ENXIO; 530 } 531 /* ARGSUSED */ 532 int 533 raidopen(dev, flags, fmt, p) 534 dev_t dev; 535 int flags, fmt; 536 struct proc *p; 537 { 538 int unit = raidunit(dev); 539 struct raid_softc *rs; 540 struct disklabel *lp; 541 int part, pmask; 542 int error = 0; 543 544 if (unit >= numraid) 545 return (ENXIO); 546 rs = &raid_softc[unit]; 547 548 if ((error = raidlock(rs)) != 0) 549 return (error); 550 lp = rs->sc_dkdev.dk_label; 551 552 part = DISKPART(dev); 553 pmask = (1 << part); 554 555 db1_printf(("Opening raid device number: %d partition: %d\n", 556 unit, part)); 557 558 559 if ((rs->sc_flags & RAIDF_INITED) && 560 (rs->sc_dkdev.dk_openmask == 0)) 561 raidgetdisklabel(dev); 562 563 /* make sure that this partition exists */ 564 565 if (part != RAW_PART) { 566 db1_printf(("Not a raw partition..\n")); 567 if (((rs->sc_flags & RAIDF_INITED) == 0) || 568 ((part >= lp->d_npartitions) || 569 (lp->d_partitions[part].p_fstype == FS_UNUSED))) { 570 error = ENXIO; 571 raidunlock(rs); 572 db1_printf(("Bailing out...\n")); 573 return (error); 574 } 575 } 576 /* Prevent this unit from being unconfigured while open. */ 577 switch (fmt) { 578 case S_IFCHR: 579 rs->sc_dkdev.dk_copenmask |= pmask; 580 break; 581 582 case S_IFBLK: 583 rs->sc_dkdev.dk_bopenmask |= pmask; 584 break; 585 } 586 587 if ((rs->sc_dkdev.dk_openmask == 0) && 588 ((rs->sc_flags & RAIDF_INITED) != 0)) { 589 /* First one... mark things as dirty... Note that we *MUST* 590 have done a configure before this. I DO NOT WANT TO BE 591 SCRIBBLING TO RANDOM COMPONENTS UNTIL IT'S BEEN DETERMINED 592 THAT THEY BELONG TOGETHER!!!!! */ 593 /* XXX should check to see if we're only open for reading 594 here... If so, we needn't do this, but then need some 595 other way of keeping track of what's happened.. */ 596 597 rf_markalldirty( raidPtrs[unit] ); 598 } 599 600 601 rs->sc_dkdev.dk_openmask = 602 rs->sc_dkdev.dk_copenmask | rs->sc_dkdev.dk_bopenmask; 603 604 raidunlock(rs); 605 606 return (error); 607 608 609 } 610 /* ARGSUSED */ 611 int 612 raidclose(dev, flags, fmt, p) 613 dev_t dev; 614 int flags, fmt; 615 struct proc *p; 616 { 617 int unit = raidunit(dev); 618 struct raid_softc *rs; 619 int error = 0; 620 int part; 621 622 if (unit >= numraid) 623 return (ENXIO); 624 rs = &raid_softc[unit]; 625 626 if ((error = raidlock(rs)) != 0) 627 return (error); 628 629 part = DISKPART(dev); 630 631 /* ...that much closer to allowing unconfiguration... */ 632 switch (fmt) { 633 case S_IFCHR: 634 rs->sc_dkdev.dk_copenmask &= ~(1 << part); 635 break; 636 637 case S_IFBLK: 638 rs->sc_dkdev.dk_bopenmask &= ~(1 << part); 639 break; 640 } 641 rs->sc_dkdev.dk_openmask = 642 rs->sc_dkdev.dk_copenmask | rs->sc_dkdev.dk_bopenmask; 643 644 if ((rs->sc_dkdev.dk_openmask == 0) && 645 ((rs->sc_flags & RAIDF_INITED) != 0)) { 646 /* Last one... device is not unconfigured yet. 647 Device shutdown has taken care of setting the 648 clean bits if RAIDF_INITED is not set 649 mark things as clean... */ 650 #if 0 651 printf("Last one on raid%d. Updating status.\n",unit); 652 #endif 653 rf_update_component_labels(raidPtrs[unit], 654 RF_FINAL_COMPONENT_UPDATE); 655 if (doing_shutdown) { 656 /* last one, and we're going down, so 657 lights out for this RAID set too. */ 658 error = rf_Shutdown(raidPtrs[unit]); 659 660 /* It's no longer initialized... */ 661 rs->sc_flags &= ~RAIDF_INITED; 662 663 /* Detach the disk. */ 664 disk_detach(&rs->sc_dkdev); 665 } 666 } 667 668 raidunlock(rs); 669 return (0); 670 671 } 672 673 void 674 raidstrategy(bp) 675 struct buf *bp; 676 { 677 int s; 678 679 unsigned int raidID = raidunit(bp->b_dev); 680 RF_Raid_t *raidPtr; 681 struct raid_softc *rs = &raid_softc[raidID]; 682 struct disklabel *lp; 683 int wlabel; 684 685 if ((rs->sc_flags & RAIDF_INITED) ==0) { 686 bp->b_error = ENXIO; 687 bp->b_flags |= B_ERROR; 688 bp->b_resid = bp->b_bcount; 689 biodone(bp); 690 return; 691 } 692 if (raidID >= numraid || !raidPtrs[raidID]) { 693 bp->b_error = ENODEV; 694 bp->b_flags |= B_ERROR; 695 bp->b_resid = bp->b_bcount; 696 biodone(bp); 697 return; 698 } 699 raidPtr = raidPtrs[raidID]; 700 if (!raidPtr->valid) { 701 bp->b_error = ENODEV; 702 bp->b_flags |= B_ERROR; 703 bp->b_resid = bp->b_bcount; 704 biodone(bp); 705 return; 706 } 707 if (bp->b_bcount == 0) { 708 db1_printf(("b_bcount is zero..\n")); 709 biodone(bp); 710 return; 711 } 712 lp = rs->sc_dkdev.dk_label; 713 714 /* 715 * Do bounds checking and adjust transfer. If there's an 716 * error, the bounds check will flag that for us. 717 */ 718 719 wlabel = rs->sc_flags & (RAIDF_WLABEL | RAIDF_LABELLING); 720 if (DISKPART(bp->b_dev) != RAW_PART) 721 if (bounds_check_with_label(bp, lp, wlabel) <= 0) { 722 db1_printf(("Bounds check failed!!:%d %d\n", 723 (int) bp->b_blkno, (int) wlabel)); 724 biodone(bp); 725 return; 726 } 727 s = splbio(); 728 729 bp->b_resid = 0; 730 731 /* stuff it onto our queue */ 732 BUFQ_INSERT_TAIL(&rs->buf_queue, bp); 733 734 raidstart(raidPtrs[raidID]); 735 736 splx(s); 737 } 738 /* ARGSUSED */ 739 int 740 raidread(dev, uio, flags) 741 dev_t dev; 742 struct uio *uio; 743 int flags; 744 { 745 int unit = raidunit(dev); 746 struct raid_softc *rs; 747 int part; 748 749 if (unit >= numraid) 750 return (ENXIO); 751 rs = &raid_softc[unit]; 752 753 if ((rs->sc_flags & RAIDF_INITED) == 0) 754 return (ENXIO); 755 part = DISKPART(dev); 756 757 db1_printf(("raidread: unit: %d partition: %d\n", unit, part)); 758 759 return (physio(raidstrategy, NULL, dev, B_READ, minphys, uio)); 760 761 } 762 /* ARGSUSED */ 763 int 764 raidwrite(dev, uio, flags) 765 dev_t dev; 766 struct uio *uio; 767 int flags; 768 { 769 int unit = raidunit(dev); 770 struct raid_softc *rs; 771 772 if (unit >= numraid) 773 return (ENXIO); 774 rs = &raid_softc[unit]; 775 776 if ((rs->sc_flags & RAIDF_INITED) == 0) 777 return (ENXIO); 778 db1_printf(("raidwrite\n")); 779 return (physio(raidstrategy, NULL, dev, B_WRITE, minphys, uio)); 780 781 } 782 783 int 784 raidioctl(dev, cmd, data, flag, p) 785 dev_t dev; 786 u_long cmd; 787 caddr_t data; 788 int flag; 789 struct proc *p; 790 { 791 int unit = raidunit(dev); 792 int error = 0; 793 int part, pmask; 794 struct raid_softc *rs; 795 RF_Config_t *k_cfg, *u_cfg; 796 RF_Raid_t *raidPtr; 797 RF_RaidDisk_t *diskPtr; 798 RF_AccTotals_t *totals; 799 RF_DeviceConfig_t *d_cfg, **ucfgp; 800 u_char *specific_buf; 801 int retcode = 0; 802 int row; 803 int column; 804 struct rf_recon_req *rrcopy, *rr; 805 RF_ComponentLabel_t *clabel; 806 RF_ComponentLabel_t ci_label; 807 RF_ComponentLabel_t **clabel_ptr; 808 RF_SingleComponent_t *sparePtr,*componentPtr; 809 RF_SingleComponent_t hot_spare; 810 RF_SingleComponent_t component; 811 RF_ProgressInfo_t progressInfo, **progressInfoPtr; 812 int i, j, d; 813 #ifdef __HAVE_OLD_DISKLABEL 814 struct disklabel newlabel; 815 #endif 816 817 if (unit >= numraid) 818 return (ENXIO); 819 rs = &raid_softc[unit]; 820 raidPtr = raidPtrs[unit]; 821 822 db1_printf(("raidioctl: %d %d %d %d\n", (int) dev, 823 (int) DISKPART(dev), (int) unit, (int) cmd)); 824 825 /* Must be open for writes for these commands... */ 826 switch (cmd) { 827 case DIOCSDINFO: 828 case DIOCWDINFO: 829 #ifdef __HAVE_OLD_DISKLABEL 830 case ODIOCWDINFO: 831 case ODIOCSDINFO: 832 #endif 833 case DIOCWLABEL: 834 if ((flag & FWRITE) == 0) 835 return (EBADF); 836 } 837 838 /* Must be initialized for these... */ 839 switch (cmd) { 840 case DIOCGDINFO: 841 case DIOCSDINFO: 842 case DIOCWDINFO: 843 #ifdef __HAVE_OLD_DISKLABEL 844 case ODIOCGDINFO: 845 case ODIOCWDINFO: 846 case ODIOCSDINFO: 847 case ODIOCGDEFLABEL: 848 #endif 849 case DIOCGPART: 850 case DIOCWLABEL: 851 case DIOCGDEFLABEL: 852 case RAIDFRAME_SHUTDOWN: 853 case RAIDFRAME_REWRITEPARITY: 854 case RAIDFRAME_GET_INFO: 855 case RAIDFRAME_RESET_ACCTOTALS: 856 case RAIDFRAME_GET_ACCTOTALS: 857 case RAIDFRAME_KEEP_ACCTOTALS: 858 case RAIDFRAME_GET_SIZE: 859 case RAIDFRAME_FAIL_DISK: 860 case RAIDFRAME_COPYBACK: 861 case RAIDFRAME_CHECK_RECON_STATUS: 862 case RAIDFRAME_CHECK_RECON_STATUS_EXT: 863 case RAIDFRAME_GET_COMPONENT_LABEL: 864 case RAIDFRAME_SET_COMPONENT_LABEL: 865 case RAIDFRAME_ADD_HOT_SPARE: 866 case RAIDFRAME_REMOVE_HOT_SPARE: 867 case RAIDFRAME_INIT_LABELS: 868 case RAIDFRAME_REBUILD_IN_PLACE: 869 case RAIDFRAME_CHECK_PARITY: 870 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS: 871 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS_EXT: 872 case RAIDFRAME_CHECK_COPYBACK_STATUS: 873 case RAIDFRAME_CHECK_COPYBACK_STATUS_EXT: 874 case RAIDFRAME_SET_AUTOCONFIG: 875 case RAIDFRAME_SET_ROOT: 876 case RAIDFRAME_DELETE_COMPONENT: 877 case RAIDFRAME_INCORPORATE_HOT_SPARE: 878 if ((rs->sc_flags & RAIDF_INITED) == 0) 879 return (ENXIO); 880 } 881 882 switch (cmd) { 883 884 /* configure the system */ 885 case RAIDFRAME_CONFIGURE: 886 887 if (raidPtr->valid) { 888 /* There is a valid RAID set running on this unit! */ 889 printf("raid%d: Device already configured!\n",unit); 890 return(EINVAL); 891 } 892 893 /* copy-in the configuration information */ 894 /* data points to a pointer to the configuration structure */ 895 896 u_cfg = *((RF_Config_t **) data); 897 RF_Malloc(k_cfg, sizeof(RF_Config_t), (RF_Config_t *)); 898 if (k_cfg == NULL) { 899 return (ENOMEM); 900 } 901 retcode = copyin((caddr_t) u_cfg, (caddr_t) k_cfg, 902 sizeof(RF_Config_t)); 903 if (retcode) { 904 RF_Free(k_cfg, sizeof(RF_Config_t)); 905 db1_printf(("rf_ioctl: retcode=%d copyin.1\n", 906 retcode)); 907 return (retcode); 908 } 909 /* allocate a buffer for the layout-specific data, and copy it 910 * in */ 911 if (k_cfg->layoutSpecificSize) { 912 if (k_cfg->layoutSpecificSize > 10000) { 913 /* sanity check */ 914 RF_Free(k_cfg, sizeof(RF_Config_t)); 915 return (EINVAL); 916 } 917 RF_Malloc(specific_buf, k_cfg->layoutSpecificSize, 918 (u_char *)); 919 if (specific_buf == NULL) { 920 RF_Free(k_cfg, sizeof(RF_Config_t)); 921 return (ENOMEM); 922 } 923 retcode = copyin(k_cfg->layoutSpecific, 924 (caddr_t) specific_buf, 925 k_cfg->layoutSpecificSize); 926 if (retcode) { 927 RF_Free(k_cfg, sizeof(RF_Config_t)); 928 RF_Free(specific_buf, 929 k_cfg->layoutSpecificSize); 930 db1_printf(("rf_ioctl: retcode=%d copyin.2\n", 931 retcode)); 932 return (retcode); 933 } 934 } else 935 specific_buf = NULL; 936 k_cfg->layoutSpecific = specific_buf; 937 938 /* should do some kind of sanity check on the configuration. 939 * Store the sum of all the bytes in the last byte? */ 940 941 /* configure the system */ 942 943 /* 944 * Clear the entire RAID descriptor, just to make sure 945 * there is no stale data left in the case of a 946 * reconfiguration 947 */ 948 memset((char *) raidPtr, 0, sizeof(RF_Raid_t)); 949 raidPtr->raidid = unit; 950 951 retcode = rf_Configure(raidPtr, k_cfg, NULL); 952 953 if (retcode == 0) { 954 955 /* allow this many simultaneous IO's to 956 this RAID device */ 957 raidPtr->openings = RAIDOUTSTANDING; 958 959 raidinit(raidPtr); 960 rf_markalldirty(raidPtr); 961 } 962 /* free the buffers. No return code here. */ 963 if (k_cfg->layoutSpecificSize) { 964 RF_Free(specific_buf, k_cfg->layoutSpecificSize); 965 } 966 RF_Free(k_cfg, sizeof(RF_Config_t)); 967 968 return (retcode); 969 970 /* shutdown the system */ 971 case RAIDFRAME_SHUTDOWN: 972 973 if ((error = raidlock(rs)) != 0) 974 return (error); 975 976 /* 977 * If somebody has a partition mounted, we shouldn't 978 * shutdown. 979 */ 980 981 part = DISKPART(dev); 982 pmask = (1 << part); 983 if ((rs->sc_dkdev.dk_openmask & ~pmask) || 984 ((rs->sc_dkdev.dk_bopenmask & pmask) && 985 (rs->sc_dkdev.dk_copenmask & pmask))) { 986 raidunlock(rs); 987 return (EBUSY); 988 } 989 990 retcode = rf_Shutdown(raidPtr); 991 992 /* It's no longer initialized... */ 993 rs->sc_flags &= ~RAIDF_INITED; 994 995 /* Detach the disk. */ 996 disk_detach(&rs->sc_dkdev); 997 998 raidunlock(rs); 999 1000 return (retcode); 1001 case RAIDFRAME_GET_COMPONENT_LABEL: 1002 clabel_ptr = (RF_ComponentLabel_t **) data; 1003 /* need to read the component label for the disk indicated 1004 by row,column in clabel */ 1005 1006 /* For practice, let's get it directly fromdisk, rather 1007 than from the in-core copy */ 1008 RF_Malloc( clabel, sizeof( RF_ComponentLabel_t ), 1009 (RF_ComponentLabel_t *)); 1010 if (clabel == NULL) 1011 return (ENOMEM); 1012 1013 memset((char *) clabel, 0, sizeof(RF_ComponentLabel_t)); 1014 1015 retcode = copyin( *clabel_ptr, clabel, 1016 sizeof(RF_ComponentLabel_t)); 1017 1018 if (retcode) { 1019 RF_Free( clabel, sizeof(RF_ComponentLabel_t)); 1020 return(retcode); 1021 } 1022 1023 row = clabel->row; 1024 column = clabel->column; 1025 1026 if ((row < 0) || (row >= raidPtr->numRow) || 1027 (column < 0) || (column >= raidPtr->numCol + 1028 raidPtr->numSpare)) { 1029 RF_Free( clabel, sizeof(RF_ComponentLabel_t)); 1030 return(EINVAL); 1031 } 1032 1033 raidread_component_label(raidPtr->Disks[row][column].dev, 1034 raidPtr->raid_cinfo[row][column].ci_vp, 1035 clabel ); 1036 1037 retcode = copyout((caddr_t) clabel, 1038 (caddr_t) *clabel_ptr, 1039 sizeof(RF_ComponentLabel_t)); 1040 RF_Free( clabel, sizeof(RF_ComponentLabel_t)); 1041 return (retcode); 1042 1043 case RAIDFRAME_SET_COMPONENT_LABEL: 1044 clabel = (RF_ComponentLabel_t *) data; 1045 1046 /* XXX check the label for valid stuff... */ 1047 /* Note that some things *should not* get modified -- 1048 the user should be re-initing the labels instead of 1049 trying to patch things. 1050 */ 1051 1052 printf("Got component label:\n"); 1053 printf("Version: %d\n",clabel->version); 1054 printf("Serial Number: %d\n",clabel->serial_number); 1055 printf("Mod counter: %d\n",clabel->mod_counter); 1056 printf("Row: %d\n", clabel->row); 1057 printf("Column: %d\n", clabel->column); 1058 printf("Num Rows: %d\n", clabel->num_rows); 1059 printf("Num Columns: %d\n", clabel->num_columns); 1060 printf("Clean: %d\n", clabel->clean); 1061 printf("Status: %d\n", clabel->status); 1062 1063 row = clabel->row; 1064 column = clabel->column; 1065 1066 if ((row < 0) || (row >= raidPtr->numRow) || 1067 (column < 0) || (column >= raidPtr->numCol)) { 1068 return(EINVAL); 1069 } 1070 1071 /* XXX this isn't allowed to do anything for now :-) */ 1072 1073 /* XXX and before it is, we need to fill in the rest 1074 of the fields!?!?!?! */ 1075 #if 0 1076 raidwrite_component_label( 1077 raidPtr->Disks[row][column].dev, 1078 raidPtr->raid_cinfo[row][column].ci_vp, 1079 clabel ); 1080 #endif 1081 return (0); 1082 1083 case RAIDFRAME_INIT_LABELS: 1084 clabel = (RF_ComponentLabel_t *) data; 1085 /* 1086 we only want the serial number from 1087 the above. We get all the rest of the information 1088 from the config that was used to create this RAID 1089 set. 1090 */ 1091 1092 raidPtr->serial_number = clabel->serial_number; 1093 1094 raid_init_component_label(raidPtr, &ci_label); 1095 ci_label.serial_number = clabel->serial_number; 1096 1097 for(row=0;row<raidPtr->numRow;row++) { 1098 ci_label.row = row; 1099 for(column=0;column<raidPtr->numCol;column++) { 1100 diskPtr = &raidPtr->Disks[row][column]; 1101 if (!RF_DEAD_DISK(diskPtr->status)) { 1102 ci_label.partitionSize = diskPtr->partitionSize; 1103 ci_label.column = column; 1104 raidwrite_component_label( 1105 raidPtr->Disks[row][column].dev, 1106 raidPtr->raid_cinfo[row][column].ci_vp, 1107 &ci_label ); 1108 } 1109 } 1110 } 1111 1112 return (retcode); 1113 case RAIDFRAME_SET_AUTOCONFIG: 1114 d = rf_set_autoconfig(raidPtr, *(int *) data); 1115 printf("New autoconfig value is: %d\n", d); 1116 *(int *) data = d; 1117 return (retcode); 1118 1119 case RAIDFRAME_SET_ROOT: 1120 d = rf_set_rootpartition(raidPtr, *(int *) data); 1121 printf("New rootpartition value is: %d\n", d); 1122 *(int *) data = d; 1123 return (retcode); 1124 1125 /* initialize all parity */ 1126 case RAIDFRAME_REWRITEPARITY: 1127 1128 if (raidPtr->Layout.map->faultsTolerated == 0) { 1129 /* Parity for RAID 0 is trivially correct */ 1130 raidPtr->parity_good = RF_RAID_CLEAN; 1131 return(0); 1132 } 1133 1134 if (raidPtr->parity_rewrite_in_progress == 1) { 1135 /* Re-write is already in progress! */ 1136 return(EINVAL); 1137 } 1138 1139 retcode = RF_CREATE_THREAD(raidPtr->parity_rewrite_thread, 1140 rf_RewriteParityThread, 1141 raidPtr,"raid_parity"); 1142 return (retcode); 1143 1144 1145 case RAIDFRAME_ADD_HOT_SPARE: 1146 sparePtr = (RF_SingleComponent_t *) data; 1147 memcpy( &hot_spare, sparePtr, sizeof(RF_SingleComponent_t)); 1148 retcode = rf_add_hot_spare(raidPtr, &hot_spare); 1149 return(retcode); 1150 1151 case RAIDFRAME_REMOVE_HOT_SPARE: 1152 return(retcode); 1153 1154 case RAIDFRAME_DELETE_COMPONENT: 1155 componentPtr = (RF_SingleComponent_t *)data; 1156 memcpy( &component, componentPtr, 1157 sizeof(RF_SingleComponent_t)); 1158 retcode = rf_delete_component(raidPtr, &component); 1159 return(retcode); 1160 1161 case RAIDFRAME_INCORPORATE_HOT_SPARE: 1162 componentPtr = (RF_SingleComponent_t *)data; 1163 memcpy( &component, componentPtr, 1164 sizeof(RF_SingleComponent_t)); 1165 retcode = rf_incorporate_hot_spare(raidPtr, &component); 1166 return(retcode); 1167 1168 case RAIDFRAME_REBUILD_IN_PLACE: 1169 1170 if (raidPtr->Layout.map->faultsTolerated == 0) { 1171 /* Can't do this on a RAID 0!! */ 1172 return(EINVAL); 1173 } 1174 1175 if (raidPtr->recon_in_progress == 1) { 1176 /* a reconstruct is already in progress! */ 1177 return(EINVAL); 1178 } 1179 1180 componentPtr = (RF_SingleComponent_t *) data; 1181 memcpy( &component, componentPtr, 1182 sizeof(RF_SingleComponent_t)); 1183 row = component.row; 1184 column = component.column; 1185 printf("Rebuild: %d %d\n",row, column); 1186 if ((row < 0) || (row >= raidPtr->numRow) || 1187 (column < 0) || (column >= raidPtr->numCol)) { 1188 return(EINVAL); 1189 } 1190 1191 RF_Malloc(rrcopy, sizeof(*rrcopy), (struct rf_recon_req *)); 1192 if (rrcopy == NULL) 1193 return(ENOMEM); 1194 1195 rrcopy->raidPtr = (void *) raidPtr; 1196 rrcopy->row = row; 1197 rrcopy->col = column; 1198 1199 retcode = RF_CREATE_THREAD(raidPtr->recon_thread, 1200 rf_ReconstructInPlaceThread, 1201 rrcopy,"raid_reconip"); 1202 return(retcode); 1203 1204 case RAIDFRAME_GET_INFO: 1205 if (!raidPtr->valid) 1206 return (ENODEV); 1207 ucfgp = (RF_DeviceConfig_t **) data; 1208 RF_Malloc(d_cfg, sizeof(RF_DeviceConfig_t), 1209 (RF_DeviceConfig_t *)); 1210 if (d_cfg == NULL) 1211 return (ENOMEM); 1212 memset((char *) d_cfg, 0, sizeof(RF_DeviceConfig_t)); 1213 d_cfg->rows = raidPtr->numRow; 1214 d_cfg->cols = raidPtr->numCol; 1215 d_cfg->ndevs = raidPtr->numRow * raidPtr->numCol; 1216 if (d_cfg->ndevs >= RF_MAX_DISKS) { 1217 RF_Free(d_cfg, sizeof(RF_DeviceConfig_t)); 1218 return (ENOMEM); 1219 } 1220 d_cfg->nspares = raidPtr->numSpare; 1221 if (d_cfg->nspares >= RF_MAX_DISKS) { 1222 RF_Free(d_cfg, sizeof(RF_DeviceConfig_t)); 1223 return (ENOMEM); 1224 } 1225 d_cfg->maxqdepth = raidPtr->maxQueueDepth; 1226 d = 0; 1227 for (i = 0; i < d_cfg->rows; i++) { 1228 for (j = 0; j < d_cfg->cols; j++) { 1229 d_cfg->devs[d] = raidPtr->Disks[i][j]; 1230 d++; 1231 } 1232 } 1233 for (j = d_cfg->cols, i = 0; i < d_cfg->nspares; i++, j++) { 1234 d_cfg->spares[i] = raidPtr->Disks[0][j]; 1235 } 1236 retcode = copyout((caddr_t) d_cfg, (caddr_t) * ucfgp, 1237 sizeof(RF_DeviceConfig_t)); 1238 RF_Free(d_cfg, sizeof(RF_DeviceConfig_t)); 1239 1240 return (retcode); 1241 1242 case RAIDFRAME_CHECK_PARITY: 1243 *(int *) data = raidPtr->parity_good; 1244 return (0); 1245 1246 case RAIDFRAME_RESET_ACCTOTALS: 1247 memset(&raidPtr->acc_totals, 0, sizeof(raidPtr->acc_totals)); 1248 return (0); 1249 1250 case RAIDFRAME_GET_ACCTOTALS: 1251 totals = (RF_AccTotals_t *) data; 1252 *totals = raidPtr->acc_totals; 1253 return (0); 1254 1255 case RAIDFRAME_KEEP_ACCTOTALS: 1256 raidPtr->keep_acc_totals = *(int *)data; 1257 return (0); 1258 1259 case RAIDFRAME_GET_SIZE: 1260 *(int *) data = raidPtr->totalSectors; 1261 return (0); 1262 1263 /* fail a disk & optionally start reconstruction */ 1264 case RAIDFRAME_FAIL_DISK: 1265 1266 if (raidPtr->Layout.map->faultsTolerated == 0) { 1267 /* Can't do this on a RAID 0!! */ 1268 return(EINVAL); 1269 } 1270 1271 rr = (struct rf_recon_req *) data; 1272 1273 if (rr->row < 0 || rr->row >= raidPtr->numRow 1274 || rr->col < 0 || rr->col >= raidPtr->numCol) 1275 return (EINVAL); 1276 1277 printf("raid%d: Failing the disk: row: %d col: %d\n", 1278 unit, rr->row, rr->col); 1279 1280 /* make a copy of the recon request so that we don't rely on 1281 * the user's buffer */ 1282 RF_Malloc(rrcopy, sizeof(*rrcopy), (struct rf_recon_req *)); 1283 if (rrcopy == NULL) 1284 return(ENOMEM); 1285 bcopy(rr, rrcopy, sizeof(*rr)); 1286 rrcopy->raidPtr = (void *) raidPtr; 1287 1288 retcode = RF_CREATE_THREAD(raidPtr->recon_thread, 1289 rf_ReconThread, 1290 rrcopy,"raid_recon"); 1291 return (0); 1292 1293 /* invoke a copyback operation after recon on whatever disk 1294 * needs it, if any */ 1295 case RAIDFRAME_COPYBACK: 1296 1297 if (raidPtr->Layout.map->faultsTolerated == 0) { 1298 /* This makes no sense on a RAID 0!! */ 1299 return(EINVAL); 1300 } 1301 1302 if (raidPtr->copyback_in_progress == 1) { 1303 /* Copyback is already in progress! */ 1304 return(EINVAL); 1305 } 1306 1307 retcode = RF_CREATE_THREAD(raidPtr->copyback_thread, 1308 rf_CopybackThread, 1309 raidPtr,"raid_copyback"); 1310 return (retcode); 1311 1312 /* return the percentage completion of reconstruction */ 1313 case RAIDFRAME_CHECK_RECON_STATUS: 1314 if (raidPtr->Layout.map->faultsTolerated == 0) { 1315 /* This makes no sense on a RAID 0, so tell the 1316 user it's done. */ 1317 *(int *) data = 100; 1318 return(0); 1319 } 1320 row = 0; /* XXX we only consider a single row... */ 1321 if (raidPtr->status[row] != rf_rs_reconstructing) 1322 *(int *) data = 100; 1323 else 1324 *(int *) data = raidPtr->reconControl[row]->percentComplete; 1325 return (0); 1326 case RAIDFRAME_CHECK_RECON_STATUS_EXT: 1327 progressInfoPtr = (RF_ProgressInfo_t **) data; 1328 row = 0; /* XXX we only consider a single row... */ 1329 if (raidPtr->status[row] != rf_rs_reconstructing) { 1330 progressInfo.remaining = 0; 1331 progressInfo.completed = 100; 1332 progressInfo.total = 100; 1333 } else { 1334 progressInfo.total = 1335 raidPtr->reconControl[row]->numRUsTotal; 1336 progressInfo.completed = 1337 raidPtr->reconControl[row]->numRUsComplete; 1338 progressInfo.remaining = progressInfo.total - 1339 progressInfo.completed; 1340 } 1341 retcode = copyout((caddr_t) &progressInfo, 1342 (caddr_t) *progressInfoPtr, 1343 sizeof(RF_ProgressInfo_t)); 1344 return (retcode); 1345 1346 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS: 1347 if (raidPtr->Layout.map->faultsTolerated == 0) { 1348 /* This makes no sense on a RAID 0, so tell the 1349 user it's done. */ 1350 *(int *) data = 100; 1351 return(0); 1352 } 1353 if (raidPtr->parity_rewrite_in_progress == 1) { 1354 *(int *) data = 100 * 1355 raidPtr->parity_rewrite_stripes_done / 1356 raidPtr->Layout.numStripe; 1357 } else { 1358 *(int *) data = 100; 1359 } 1360 return (0); 1361 1362 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS_EXT: 1363 progressInfoPtr = (RF_ProgressInfo_t **) data; 1364 if (raidPtr->parity_rewrite_in_progress == 1) { 1365 progressInfo.total = raidPtr->Layout.numStripe; 1366 progressInfo.completed = 1367 raidPtr->parity_rewrite_stripes_done; 1368 progressInfo.remaining = progressInfo.total - 1369 progressInfo.completed; 1370 } else { 1371 progressInfo.remaining = 0; 1372 progressInfo.completed = 100; 1373 progressInfo.total = 100; 1374 } 1375 retcode = copyout((caddr_t) &progressInfo, 1376 (caddr_t) *progressInfoPtr, 1377 sizeof(RF_ProgressInfo_t)); 1378 return (retcode); 1379 1380 case RAIDFRAME_CHECK_COPYBACK_STATUS: 1381 if (raidPtr->Layout.map->faultsTolerated == 0) { 1382 /* This makes no sense on a RAID 0 */ 1383 *(int *) data = 100; 1384 return(0); 1385 } 1386 if (raidPtr->copyback_in_progress == 1) { 1387 *(int *) data = 100 * raidPtr->copyback_stripes_done / 1388 raidPtr->Layout.numStripe; 1389 } else { 1390 *(int *) data = 100; 1391 } 1392 return (0); 1393 1394 case RAIDFRAME_CHECK_COPYBACK_STATUS_EXT: 1395 progressInfoPtr = (RF_ProgressInfo_t **) data; 1396 if (raidPtr->copyback_in_progress == 1) { 1397 progressInfo.total = raidPtr->Layout.numStripe; 1398 progressInfo.completed = 1399 raidPtr->copyback_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 /* the sparetable daemon calls this to wait for the kernel to 1413 * need a spare table. this ioctl does not return until a 1414 * spare table is needed. XXX -- calling mpsleep here in the 1415 * ioctl code is almost certainly wrong and evil. -- XXX XXX 1416 * -- I should either compute the spare table in the kernel, 1417 * or have a different -- XXX XXX -- interface (a different 1418 * character device) for delivering the table -- XXX */ 1419 #if 0 1420 case RAIDFRAME_SPARET_WAIT: 1421 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1422 while (!rf_sparet_wait_queue) 1423 mpsleep(&rf_sparet_wait_queue, (PZERO + 1) | PCATCH, "sparet wait", 0, (void *) simple_lock_addr(rf_sparet_wait_mutex), MS_LOCK_SIMPLE); 1424 waitreq = rf_sparet_wait_queue; 1425 rf_sparet_wait_queue = rf_sparet_wait_queue->next; 1426 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1427 1428 /* structure assignment */ 1429 *((RF_SparetWait_t *) data) = *waitreq; 1430 1431 RF_Free(waitreq, sizeof(*waitreq)); 1432 return (0); 1433 1434 /* wakes up a process waiting on SPARET_WAIT and puts an error 1435 * code in it that will cause the dameon to exit */ 1436 case RAIDFRAME_ABORT_SPARET_WAIT: 1437 RF_Malloc(waitreq, sizeof(*waitreq), (RF_SparetWait_t *)); 1438 waitreq->fcol = -1; 1439 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1440 waitreq->next = rf_sparet_wait_queue; 1441 rf_sparet_wait_queue = waitreq; 1442 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1443 wakeup(&rf_sparet_wait_queue); 1444 return (0); 1445 1446 /* used by the spare table daemon to deliver a spare table 1447 * into the kernel */ 1448 case RAIDFRAME_SEND_SPARET: 1449 1450 /* install the spare table */ 1451 retcode = rf_SetSpareTable(raidPtr, *(void **) data); 1452 1453 /* respond to the requestor. the return status of the spare 1454 * table installation is passed in the "fcol" field */ 1455 RF_Malloc(waitreq, sizeof(*waitreq), (RF_SparetWait_t *)); 1456 waitreq->fcol = retcode; 1457 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1458 waitreq->next = rf_sparet_resp_queue; 1459 rf_sparet_resp_queue = waitreq; 1460 wakeup(&rf_sparet_resp_queue); 1461 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1462 1463 return (retcode); 1464 #endif 1465 1466 default: 1467 break; /* fall through to the os-specific code below */ 1468 1469 } 1470 1471 if (!raidPtr->valid) 1472 return (EINVAL); 1473 1474 /* 1475 * Add support for "regular" device ioctls here. 1476 */ 1477 1478 switch (cmd) { 1479 case DIOCGDINFO: 1480 *(struct disklabel *) data = *(rs->sc_dkdev.dk_label); 1481 break; 1482 #ifdef __HAVE_OLD_DISKLABEL 1483 case ODIOCGDINFO: 1484 newlabel = *(rs->sc_dkdev.dk_label); 1485 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1486 return ENOTTY; 1487 memcpy(data, &newlabel, sizeof (struct olddisklabel)); 1488 break; 1489 #endif 1490 1491 case DIOCGPART: 1492 ((struct partinfo *) data)->disklab = rs->sc_dkdev.dk_label; 1493 ((struct partinfo *) data)->part = 1494 &rs->sc_dkdev.dk_label->d_partitions[DISKPART(dev)]; 1495 break; 1496 1497 case DIOCWDINFO: 1498 case DIOCSDINFO: 1499 #ifdef __HAVE_OLD_DISKLABEL 1500 case ODIOCWDINFO: 1501 case ODIOCSDINFO: 1502 #endif 1503 { 1504 struct disklabel *lp; 1505 #ifdef __HAVE_OLD_DISKLABEL 1506 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1507 memset(&newlabel, 0, sizeof newlabel); 1508 memcpy(&newlabel, data, sizeof (struct olddisklabel)); 1509 lp = &newlabel; 1510 } else 1511 #endif 1512 lp = (struct disklabel *)data; 1513 1514 if ((error = raidlock(rs)) != 0) 1515 return (error); 1516 1517 rs->sc_flags |= RAIDF_LABELLING; 1518 1519 error = setdisklabel(rs->sc_dkdev.dk_label, 1520 lp, 0, rs->sc_dkdev.dk_cpulabel); 1521 if (error == 0) { 1522 if (cmd == DIOCWDINFO 1523 #ifdef __HAVE_OLD_DISKLABEL 1524 || cmd == ODIOCWDINFO 1525 #endif 1526 ) 1527 error = writedisklabel(RAIDLABELDEV(dev), 1528 raidstrategy, rs->sc_dkdev.dk_label, 1529 rs->sc_dkdev.dk_cpulabel); 1530 } 1531 rs->sc_flags &= ~RAIDF_LABELLING; 1532 1533 raidunlock(rs); 1534 1535 if (error) 1536 return (error); 1537 break; 1538 } 1539 1540 case DIOCWLABEL: 1541 if (*(int *) data != 0) 1542 rs->sc_flags |= RAIDF_WLABEL; 1543 else 1544 rs->sc_flags &= ~RAIDF_WLABEL; 1545 break; 1546 1547 case DIOCGDEFLABEL: 1548 raidgetdefaultlabel(raidPtr, rs, (struct disklabel *) data); 1549 break; 1550 1551 #ifdef __HAVE_OLD_DISKLABEL 1552 case ODIOCGDEFLABEL: 1553 raidgetdefaultlabel(raidPtr, rs, &newlabel); 1554 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1555 return ENOTTY; 1556 memcpy(data, &newlabel, sizeof (struct olddisklabel)); 1557 break; 1558 #endif 1559 1560 default: 1561 retcode = ENOTTY; 1562 } 1563 return (retcode); 1564 1565 } 1566 1567 1568 /* raidinit -- complete the rest of the initialization for the 1569 RAIDframe device. */ 1570 1571 1572 static void 1573 raidinit(raidPtr) 1574 RF_Raid_t *raidPtr; 1575 { 1576 struct raid_softc *rs; 1577 int unit; 1578 1579 unit = raidPtr->raidid; 1580 1581 rs = &raid_softc[unit]; 1582 1583 /* XXX should check return code first... */ 1584 rs->sc_flags |= RAIDF_INITED; 1585 1586 sprintf(rs->sc_xname, "raid%d", unit); /* XXX doesn't check bounds. */ 1587 1588 rs->sc_dkdev.dk_name = rs->sc_xname; 1589 1590 /* disk_attach actually creates space for the CPU disklabel, among 1591 * other things, so it's critical to call this *BEFORE* we try putzing 1592 * with disklabels. */ 1593 1594 disk_attach(&rs->sc_dkdev); 1595 1596 /* XXX There may be a weird interaction here between this, and 1597 * protectedSectors, as used in RAIDframe. */ 1598 1599 rs->sc_size = raidPtr->totalSectors; 1600 1601 } 1602 1603 /* wake up the daemon & tell it to get us a spare table 1604 * XXX 1605 * the entries in the queues should be tagged with the raidPtr 1606 * so that in the extremely rare case that two recons happen at once, 1607 * we know for which device were requesting a spare table 1608 * XXX 1609 * 1610 * XXX This code is not currently used. GO 1611 */ 1612 int 1613 rf_GetSpareTableFromDaemon(req) 1614 RF_SparetWait_t *req; 1615 { 1616 int retcode; 1617 1618 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1619 req->next = rf_sparet_wait_queue; 1620 rf_sparet_wait_queue = req; 1621 wakeup(&rf_sparet_wait_queue); 1622 1623 /* mpsleep unlocks the mutex */ 1624 while (!rf_sparet_resp_queue) { 1625 tsleep(&rf_sparet_resp_queue, PRIBIO, 1626 "raidframe getsparetable", 0); 1627 } 1628 req = rf_sparet_resp_queue; 1629 rf_sparet_resp_queue = req->next; 1630 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1631 1632 retcode = req->fcol; 1633 RF_Free(req, sizeof(*req)); /* this is not the same req as we 1634 * alloc'd */ 1635 return (retcode); 1636 } 1637 1638 /* a wrapper around rf_DoAccess that extracts appropriate info from the 1639 * bp & passes it down. 1640 * any calls originating in the kernel must use non-blocking I/O 1641 * do some extra sanity checking to return "appropriate" error values for 1642 * certain conditions (to make some standard utilities work) 1643 * 1644 * Formerly known as: rf_DoAccessKernel 1645 */ 1646 void 1647 raidstart(raidPtr) 1648 RF_Raid_t *raidPtr; 1649 { 1650 RF_SectorCount_t num_blocks, pb, sum; 1651 RF_RaidAddr_t raid_addr; 1652 int retcode; 1653 struct partition *pp; 1654 daddr_t blocknum; 1655 int unit; 1656 struct raid_softc *rs; 1657 int do_async; 1658 struct buf *bp; 1659 1660 unit = raidPtr->raidid; 1661 rs = &raid_softc[unit]; 1662 1663 /* quick check to see if anything has died recently */ 1664 RF_LOCK_MUTEX(raidPtr->mutex); 1665 if (raidPtr->numNewFailures > 0) { 1666 rf_update_component_labels(raidPtr, 1667 RF_NORMAL_COMPONENT_UPDATE); 1668 raidPtr->numNewFailures--; 1669 } 1670 RF_UNLOCK_MUTEX(raidPtr->mutex); 1671 1672 /* Check to see if we're at the limit... */ 1673 RF_LOCK_MUTEX(raidPtr->mutex); 1674 while (raidPtr->openings > 0) { 1675 RF_UNLOCK_MUTEX(raidPtr->mutex); 1676 1677 /* get the next item, if any, from the queue */ 1678 if ((bp = BUFQ_FIRST(&rs->buf_queue)) == NULL) { 1679 /* nothing more to do */ 1680 return; 1681 } 1682 BUFQ_REMOVE(&rs->buf_queue, bp); 1683 1684 /* Ok, for the bp we have here, bp->b_blkno is relative to the 1685 * partition.. Need to make it absolute to the underlying 1686 * device.. */ 1687 1688 blocknum = bp->b_blkno; 1689 if (DISKPART(bp->b_dev) != RAW_PART) { 1690 pp = &rs->sc_dkdev.dk_label->d_partitions[DISKPART(bp->b_dev)]; 1691 blocknum += pp->p_offset; 1692 } 1693 1694 db1_printf(("Blocks: %d, %d\n", (int) bp->b_blkno, 1695 (int) blocknum)); 1696 1697 db1_printf(("bp->b_bcount = %d\n", (int) bp->b_bcount)); 1698 db1_printf(("bp->b_resid = %d\n", (int) bp->b_resid)); 1699 1700 /* *THIS* is where we adjust what block we're going to... 1701 * but DO NOT TOUCH bp->b_blkno!!! */ 1702 raid_addr = blocknum; 1703 1704 num_blocks = bp->b_bcount >> raidPtr->logBytesPerSector; 1705 pb = (bp->b_bcount & raidPtr->sectorMask) ? 1 : 0; 1706 sum = raid_addr + num_blocks + pb; 1707 if (1 || rf_debugKernelAccess) { 1708 db1_printf(("raid_addr=%d sum=%d num_blocks=%d(+%d) (%d)\n", 1709 (int) raid_addr, (int) sum, (int) num_blocks, 1710 (int) pb, (int) bp->b_resid)); 1711 } 1712 if ((sum > raidPtr->totalSectors) || (sum < raid_addr) 1713 || (sum < num_blocks) || (sum < pb)) { 1714 bp->b_error = ENOSPC; 1715 bp->b_flags |= B_ERROR; 1716 bp->b_resid = bp->b_bcount; 1717 biodone(bp); 1718 RF_LOCK_MUTEX(raidPtr->mutex); 1719 continue; 1720 } 1721 /* 1722 * XXX rf_DoAccess() should do this, not just DoAccessKernel() 1723 */ 1724 1725 if (bp->b_bcount & raidPtr->sectorMask) { 1726 bp->b_error = EINVAL; 1727 bp->b_flags |= B_ERROR; 1728 bp->b_resid = bp->b_bcount; 1729 biodone(bp); 1730 RF_LOCK_MUTEX(raidPtr->mutex); 1731 continue; 1732 1733 } 1734 db1_printf(("Calling DoAccess..\n")); 1735 1736 1737 RF_LOCK_MUTEX(raidPtr->mutex); 1738 raidPtr->openings--; 1739 RF_UNLOCK_MUTEX(raidPtr->mutex); 1740 1741 /* 1742 * Everything is async. 1743 */ 1744 do_async = 1; 1745 1746 disk_busy(&rs->sc_dkdev); 1747 1748 /* XXX we're still at splbio() here... do we *really* 1749 need to be? */ 1750 1751 /* don't ever condition on bp->b_flags & B_WRITE. 1752 * always condition on B_READ instead */ 1753 1754 retcode = rf_DoAccess(raidPtr, (bp->b_flags & B_READ) ? 1755 RF_IO_TYPE_READ : RF_IO_TYPE_WRITE, 1756 do_async, raid_addr, num_blocks, 1757 bp->b_data, bp, RF_DAG_NONBLOCKING_IO); 1758 1759 RF_LOCK_MUTEX(raidPtr->mutex); 1760 } 1761 RF_UNLOCK_MUTEX(raidPtr->mutex); 1762 } 1763 1764 1765 1766 1767 /* invoke an I/O from kernel mode. Disk queue should be locked upon entry */ 1768 1769 int 1770 rf_DispatchKernelIO(queue, req) 1771 RF_DiskQueue_t *queue; 1772 RF_DiskQueueData_t *req; 1773 { 1774 int op = (req->type == RF_IO_TYPE_READ) ? B_READ : B_WRITE; 1775 struct buf *bp; 1776 struct raidbuf *raidbp = NULL; 1777 struct raid_softc *rs; 1778 int unit; 1779 int s; 1780 1781 s=0; 1782 /* s = splbio();*/ /* want to test this */ 1783 /* XXX along with the vnode, we also need the softc associated with 1784 * this device.. */ 1785 1786 req->queue = queue; 1787 1788 unit = queue->raidPtr->raidid; 1789 1790 db1_printf(("DispatchKernelIO unit: %d\n", unit)); 1791 1792 if (unit >= numraid) { 1793 printf("Invalid unit number: %d %d\n", unit, numraid); 1794 panic("Invalid Unit number in rf_DispatchKernelIO\n"); 1795 } 1796 rs = &raid_softc[unit]; 1797 1798 bp = req->bp; 1799 #if 1 1800 /* XXX when there is a physical disk failure, someone is passing us a 1801 * buffer that contains old stuff!! Attempt to deal with this problem 1802 * without taking a performance hit... (not sure where the real bug 1803 * is. It's buried in RAIDframe somewhere) :-( GO ) */ 1804 1805 if (bp->b_flags & B_ERROR) { 1806 bp->b_flags &= ~B_ERROR; 1807 } 1808 if (bp->b_error != 0) { 1809 bp->b_error = 0; 1810 } 1811 #endif 1812 raidbp = RAIDGETBUF(rs); 1813 1814 raidbp->rf_flags = 0; /* XXX not really used anywhere... */ 1815 1816 /* 1817 * context for raidiodone 1818 */ 1819 raidbp->rf_obp = bp; 1820 raidbp->req = req; 1821 1822 LIST_INIT(&raidbp->rf_buf.b_dep); 1823 1824 switch (req->type) { 1825 case RF_IO_TYPE_NOP: /* used primarily to unlock a locked queue */ 1826 /* XXX need to do something extra here.. */ 1827 /* I'm leaving this in, as I've never actually seen it used, 1828 * and I'd like folks to report it... GO */ 1829 printf(("WAKEUP CALLED\n")); 1830 queue->numOutstanding++; 1831 1832 /* XXX need to glue the original buffer into this?? */ 1833 1834 KernelWakeupFunc(&raidbp->rf_buf); 1835 break; 1836 1837 case RF_IO_TYPE_READ: 1838 case RF_IO_TYPE_WRITE: 1839 1840 if (req->tracerec) { 1841 RF_ETIMER_START(req->tracerec->timer); 1842 } 1843 InitBP(&raidbp->rf_buf, queue->rf_cinfo->ci_vp, 1844 op | bp->b_flags, queue->rf_cinfo->ci_dev, 1845 req->sectorOffset, req->numSector, 1846 req->buf, KernelWakeupFunc, (void *) req, 1847 queue->raidPtr->logBytesPerSector, req->b_proc); 1848 1849 if (rf_debugKernelAccess) { 1850 db1_printf(("dispatch: bp->b_blkno = %ld\n", 1851 (long) bp->b_blkno)); 1852 } 1853 queue->numOutstanding++; 1854 queue->last_deq_sector = req->sectorOffset; 1855 /* acc wouldn't have been let in if there were any pending 1856 * reqs at any other priority */ 1857 queue->curPriority = req->priority; 1858 1859 db1_printf(("Going for %c to unit %d row %d col %d\n", 1860 req->type, unit, queue->row, queue->col)); 1861 db1_printf(("sector %d count %d (%d bytes) %d\n", 1862 (int) req->sectorOffset, (int) req->numSector, 1863 (int) (req->numSector << 1864 queue->raidPtr->logBytesPerSector), 1865 (int) queue->raidPtr->logBytesPerSector)); 1866 if ((raidbp->rf_buf.b_flags & B_READ) == 0) { 1867 raidbp->rf_buf.b_vp->v_numoutput++; 1868 } 1869 VOP_STRATEGY(&raidbp->rf_buf); 1870 1871 break; 1872 1873 default: 1874 panic("bad req->type in rf_DispatchKernelIO"); 1875 } 1876 db1_printf(("Exiting from DispatchKernelIO\n")); 1877 /* splx(s); */ /* want to test this */ 1878 return (0); 1879 } 1880 /* this is the callback function associated with a I/O invoked from 1881 kernel code. 1882 */ 1883 static void 1884 KernelWakeupFunc(vbp) 1885 struct buf *vbp; 1886 { 1887 RF_DiskQueueData_t *req = NULL; 1888 RF_DiskQueue_t *queue; 1889 struct raidbuf *raidbp = (struct raidbuf *) vbp; 1890 struct buf *bp; 1891 struct raid_softc *rs; 1892 int unit; 1893 int s; 1894 1895 s = splbio(); 1896 db1_printf(("recovering the request queue:\n")); 1897 req = raidbp->req; 1898 1899 bp = raidbp->rf_obp; 1900 1901 queue = (RF_DiskQueue_t *) req->queue; 1902 1903 if (raidbp->rf_buf.b_flags & B_ERROR) { 1904 bp->b_flags |= B_ERROR; 1905 bp->b_error = raidbp->rf_buf.b_error ? 1906 raidbp->rf_buf.b_error : EIO; 1907 } 1908 1909 /* XXX methinks this could be wrong... */ 1910 #if 1 1911 bp->b_resid = raidbp->rf_buf.b_resid; 1912 #endif 1913 1914 if (req->tracerec) { 1915 RF_ETIMER_STOP(req->tracerec->timer); 1916 RF_ETIMER_EVAL(req->tracerec->timer); 1917 RF_LOCK_MUTEX(rf_tracing_mutex); 1918 req->tracerec->diskwait_us += RF_ETIMER_VAL_US(req->tracerec->timer); 1919 req->tracerec->phys_io_us += RF_ETIMER_VAL_US(req->tracerec->timer); 1920 req->tracerec->num_phys_ios++; 1921 RF_UNLOCK_MUTEX(rf_tracing_mutex); 1922 } 1923 bp->b_bcount = raidbp->rf_buf.b_bcount; /* XXXX ?? */ 1924 1925 unit = queue->raidPtr->raidid; /* *Much* simpler :-> */ 1926 1927 1928 /* XXX Ok, let's get aggressive... If B_ERROR is set, let's go 1929 * ballistic, and mark the component as hosed... */ 1930 1931 if (bp->b_flags & B_ERROR) { 1932 /* Mark the disk as dead */ 1933 /* but only mark it once... */ 1934 if (queue->raidPtr->Disks[queue->row][queue->col].status == 1935 rf_ds_optimal) { 1936 printf("raid%d: IO Error. Marking %s as failed.\n", 1937 unit, queue->raidPtr->Disks[queue->row][queue->col].devname); 1938 queue->raidPtr->Disks[queue->row][queue->col].status = 1939 rf_ds_failed; 1940 queue->raidPtr->status[queue->row] = rf_rs_degraded; 1941 queue->raidPtr->numFailures++; 1942 queue->raidPtr->numNewFailures++; 1943 } else { /* Disk is already dead... */ 1944 /* printf("Disk already marked as dead!\n"); */ 1945 } 1946 1947 } 1948 1949 rs = &raid_softc[unit]; 1950 RAIDPUTBUF(rs, raidbp); 1951 1952 rf_DiskIOComplete(queue, req, (bp->b_flags & B_ERROR) ? 1 : 0); 1953 (req->CompleteFunc) (req->argument, (bp->b_flags & B_ERROR) ? 1 : 0); 1954 1955 splx(s); 1956 } 1957 1958 1959 1960 /* 1961 * initialize a buf structure for doing an I/O in the kernel. 1962 */ 1963 static void 1964 InitBP(bp, b_vp, rw_flag, dev, startSect, numSect, buf, cbFunc, cbArg, 1965 logBytesPerSector, b_proc) 1966 struct buf *bp; 1967 struct vnode *b_vp; 1968 unsigned rw_flag; 1969 dev_t dev; 1970 RF_SectorNum_t startSect; 1971 RF_SectorCount_t numSect; 1972 caddr_t buf; 1973 void (*cbFunc) (struct buf *); 1974 void *cbArg; 1975 int logBytesPerSector; 1976 struct proc *b_proc; 1977 { 1978 /* bp->b_flags = B_PHYS | rw_flag; */ 1979 bp->b_flags = B_CALL | rw_flag; /* XXX need B_PHYS here too??? */ 1980 bp->b_bcount = numSect << logBytesPerSector; 1981 bp->b_bufsize = bp->b_bcount; 1982 bp->b_error = 0; 1983 bp->b_dev = dev; 1984 bp->b_data = buf; 1985 bp->b_blkno = startSect; 1986 bp->b_resid = bp->b_bcount; /* XXX is this right!??!?!! */ 1987 if (bp->b_bcount == 0) { 1988 panic("bp->b_bcount is zero in InitBP!!\n"); 1989 } 1990 bp->b_proc = b_proc; 1991 bp->b_iodone = cbFunc; 1992 bp->b_vp = b_vp; 1993 1994 } 1995 1996 static void 1997 raidgetdefaultlabel(raidPtr, rs, lp) 1998 RF_Raid_t *raidPtr; 1999 struct raid_softc *rs; 2000 struct disklabel *lp; 2001 { 2002 db1_printf(("Building a default label...\n")); 2003 memset(lp, 0, sizeof(*lp)); 2004 2005 /* fabricate a label... */ 2006 lp->d_secperunit = raidPtr->totalSectors; 2007 lp->d_secsize = raidPtr->bytesPerSector; 2008 lp->d_nsectors = raidPtr->Layout.dataSectorsPerStripe; 2009 lp->d_ntracks = 4 * raidPtr->numCol; 2010 lp->d_ncylinders = raidPtr->totalSectors / 2011 (lp->d_nsectors * lp->d_ntracks); 2012 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 2013 2014 strncpy(lp->d_typename, "raid", sizeof(lp->d_typename)); 2015 lp->d_type = DTYPE_RAID; 2016 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2017 lp->d_rpm = 3600; 2018 lp->d_interleave = 1; 2019 lp->d_flags = 0; 2020 2021 lp->d_partitions[RAW_PART].p_offset = 0; 2022 lp->d_partitions[RAW_PART].p_size = raidPtr->totalSectors; 2023 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2024 lp->d_npartitions = RAW_PART + 1; 2025 2026 lp->d_magic = DISKMAGIC; 2027 lp->d_magic2 = DISKMAGIC; 2028 lp->d_checksum = dkcksum(rs->sc_dkdev.dk_label); 2029 2030 } 2031 /* 2032 * Read the disklabel from the raid device. If one is not present, fake one 2033 * up. 2034 */ 2035 static void 2036 raidgetdisklabel(dev) 2037 dev_t dev; 2038 { 2039 int unit = raidunit(dev); 2040 struct raid_softc *rs = &raid_softc[unit]; 2041 char *errstring; 2042 struct disklabel *lp = rs->sc_dkdev.dk_label; 2043 struct cpu_disklabel *clp = rs->sc_dkdev.dk_cpulabel; 2044 RF_Raid_t *raidPtr; 2045 2046 db1_printf(("Getting the disklabel...\n")); 2047 2048 memset(clp, 0, sizeof(*clp)); 2049 2050 raidPtr = raidPtrs[unit]; 2051 2052 raidgetdefaultlabel(raidPtr, rs, lp); 2053 2054 /* 2055 * Call the generic disklabel extraction routine. 2056 */ 2057 errstring = readdisklabel(RAIDLABELDEV(dev), raidstrategy, 2058 rs->sc_dkdev.dk_label, rs->sc_dkdev.dk_cpulabel); 2059 if (errstring) 2060 raidmakedisklabel(rs); 2061 else { 2062 int i; 2063 struct partition *pp; 2064 2065 /* 2066 * Sanity check whether the found disklabel is valid. 2067 * 2068 * This is necessary since total size of the raid device 2069 * may vary when an interleave is changed even though exactly 2070 * same componets are used, and old disklabel may used 2071 * if that is found. 2072 */ 2073 if (lp->d_secperunit != rs->sc_size) 2074 printf("WARNING: %s: " 2075 "total sector size in disklabel (%d) != " 2076 "the size of raid (%ld)\n", rs->sc_xname, 2077 lp->d_secperunit, (long) rs->sc_size); 2078 for (i = 0; i < lp->d_npartitions; i++) { 2079 pp = &lp->d_partitions[i]; 2080 if (pp->p_offset + pp->p_size > rs->sc_size) 2081 printf("WARNING: %s: end of partition `%c' " 2082 "exceeds the size of raid (%ld)\n", 2083 rs->sc_xname, 'a' + i, (long) rs->sc_size); 2084 } 2085 } 2086 2087 } 2088 /* 2089 * Take care of things one might want to take care of in the event 2090 * that a disklabel isn't present. 2091 */ 2092 static void 2093 raidmakedisklabel(rs) 2094 struct raid_softc *rs; 2095 { 2096 struct disklabel *lp = rs->sc_dkdev.dk_label; 2097 db1_printf(("Making a label..\n")); 2098 2099 /* 2100 * For historical reasons, if there's no disklabel present 2101 * the raw partition must be marked FS_BSDFFS. 2102 */ 2103 2104 lp->d_partitions[RAW_PART].p_fstype = FS_BSDFFS; 2105 2106 strncpy(lp->d_packname, "default label", sizeof(lp->d_packname)); 2107 2108 lp->d_checksum = dkcksum(lp); 2109 } 2110 /* 2111 * Lookup the provided name in the filesystem. If the file exists, 2112 * is a valid block device, and isn't being used by anyone else, 2113 * set *vpp to the file's vnode. 2114 * You'll find the original of this in ccd.c 2115 */ 2116 int 2117 raidlookup(path, p, vpp) 2118 char *path; 2119 struct proc *p; 2120 struct vnode **vpp; /* result */ 2121 { 2122 struct nameidata nd; 2123 struct vnode *vp; 2124 struct vattr va; 2125 int error; 2126 2127 NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, path, p); 2128 if ((error = vn_open(&nd, FREAD | FWRITE, 0)) != 0) { 2129 #ifdef DEBUG 2130 printf("RAIDframe: vn_open returned %d\n", error); 2131 #endif 2132 return (error); 2133 } 2134 vp = nd.ni_vp; 2135 if (vp->v_usecount > 1) { 2136 VOP_UNLOCK(vp, 0); 2137 (void) vn_close(vp, FREAD | FWRITE, p->p_ucred, p); 2138 return (EBUSY); 2139 } 2140 if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p)) != 0) { 2141 VOP_UNLOCK(vp, 0); 2142 (void) vn_close(vp, FREAD | FWRITE, p->p_ucred, p); 2143 return (error); 2144 } 2145 /* XXX: eventually we should handle VREG, too. */ 2146 if (va.va_type != VBLK) { 2147 VOP_UNLOCK(vp, 0); 2148 (void) vn_close(vp, FREAD | FWRITE, p->p_ucred, p); 2149 return (ENOTBLK); 2150 } 2151 VOP_UNLOCK(vp, 0); 2152 *vpp = vp; 2153 return (0); 2154 } 2155 /* 2156 * Wait interruptibly for an exclusive lock. 2157 * 2158 * XXX 2159 * Several drivers do this; it should be abstracted and made MP-safe. 2160 * (Hmm... where have we seen this warning before :-> GO ) 2161 */ 2162 static int 2163 raidlock(rs) 2164 struct raid_softc *rs; 2165 { 2166 int error; 2167 2168 while ((rs->sc_flags & RAIDF_LOCKED) != 0) { 2169 rs->sc_flags |= RAIDF_WANTED; 2170 if ((error = 2171 tsleep(rs, PRIBIO | PCATCH, "raidlck", 0)) != 0) 2172 return (error); 2173 } 2174 rs->sc_flags |= RAIDF_LOCKED; 2175 return (0); 2176 } 2177 /* 2178 * Unlock and wake up any waiters. 2179 */ 2180 static void 2181 raidunlock(rs) 2182 struct raid_softc *rs; 2183 { 2184 2185 rs->sc_flags &= ~RAIDF_LOCKED; 2186 if ((rs->sc_flags & RAIDF_WANTED) != 0) { 2187 rs->sc_flags &= ~RAIDF_WANTED; 2188 wakeup(rs); 2189 } 2190 } 2191 2192 2193 #define RF_COMPONENT_INFO_OFFSET 16384 /* bytes */ 2194 #define RF_COMPONENT_INFO_SIZE 1024 /* bytes */ 2195 2196 int 2197 raidmarkclean(dev_t dev, struct vnode *b_vp, int mod_counter) 2198 { 2199 RF_ComponentLabel_t clabel; 2200 raidread_component_label(dev, b_vp, &clabel); 2201 clabel.mod_counter = mod_counter; 2202 clabel.clean = RF_RAID_CLEAN; 2203 raidwrite_component_label(dev, b_vp, &clabel); 2204 return(0); 2205 } 2206 2207 2208 int 2209 raidmarkdirty(dev_t dev, struct vnode *b_vp, int mod_counter) 2210 { 2211 RF_ComponentLabel_t clabel; 2212 raidread_component_label(dev, b_vp, &clabel); 2213 clabel.mod_counter = mod_counter; 2214 clabel.clean = RF_RAID_DIRTY; 2215 raidwrite_component_label(dev, b_vp, &clabel); 2216 return(0); 2217 } 2218 2219 /* ARGSUSED */ 2220 int 2221 raidread_component_label(dev, b_vp, clabel) 2222 dev_t dev; 2223 struct vnode *b_vp; 2224 RF_ComponentLabel_t *clabel; 2225 { 2226 struct buf *bp; 2227 const struct bdevsw *bdev; 2228 int error; 2229 2230 /* XXX should probably ensure that we don't try to do this if 2231 someone has changed rf_protected_sectors. */ 2232 2233 if (b_vp == NULL) { 2234 /* For whatever reason, this component is not valid. 2235 Don't try to read a component label from it. */ 2236 return(EINVAL); 2237 } 2238 2239 /* get a block of the appropriate size... */ 2240 bp = geteblk((int)RF_COMPONENT_INFO_SIZE); 2241 bp->b_dev = dev; 2242 2243 /* get our ducks in a row for the read */ 2244 bp->b_blkno = RF_COMPONENT_INFO_OFFSET / DEV_BSIZE; 2245 bp->b_bcount = RF_COMPONENT_INFO_SIZE; 2246 bp->b_flags |= B_READ; 2247 bp->b_resid = RF_COMPONENT_INFO_SIZE / DEV_BSIZE; 2248 2249 bdev = bdevsw_lookup(bp->b_dev); 2250 if (bdev == NULL) 2251 return (ENXIO); 2252 (*bdev->d_strategy)(bp); 2253 2254 error = biowait(bp); 2255 2256 if (!error) { 2257 memcpy(clabel, bp->b_data, 2258 sizeof(RF_ComponentLabel_t)); 2259 #if 0 2260 rf_print_component_label( clabel ); 2261 #endif 2262 } else { 2263 #if 0 2264 printf("Failed to read RAID component label!\n"); 2265 #endif 2266 } 2267 2268 brelse(bp); 2269 return(error); 2270 } 2271 /* ARGSUSED */ 2272 int 2273 raidwrite_component_label(dev, b_vp, clabel) 2274 dev_t dev; 2275 struct vnode *b_vp; 2276 RF_ComponentLabel_t *clabel; 2277 { 2278 struct buf *bp; 2279 const struct bdevsw *bdev; 2280 int error; 2281 2282 /* get a block of the appropriate size... */ 2283 bp = geteblk((int)RF_COMPONENT_INFO_SIZE); 2284 bp->b_dev = dev; 2285 2286 /* get our ducks in a row for the write */ 2287 bp->b_blkno = RF_COMPONENT_INFO_OFFSET / DEV_BSIZE; 2288 bp->b_bcount = RF_COMPONENT_INFO_SIZE; 2289 bp->b_flags |= B_WRITE; 2290 bp->b_resid = RF_COMPONENT_INFO_SIZE / DEV_BSIZE; 2291 2292 memset(bp->b_data, 0, RF_COMPONENT_INFO_SIZE ); 2293 2294 memcpy(bp->b_data, clabel, sizeof(RF_ComponentLabel_t)); 2295 2296 bdev = bdevsw_lookup(bp->b_dev); 2297 if (bdev == NULL) 2298 return (ENXIO); 2299 (*bdev->d_strategy)(bp); 2300 error = biowait(bp); 2301 brelse(bp); 2302 if (error) { 2303 #if 1 2304 printf("Failed to write RAID component info!\n"); 2305 #endif 2306 } 2307 2308 return(error); 2309 } 2310 2311 void 2312 rf_markalldirty(raidPtr) 2313 RF_Raid_t *raidPtr; 2314 { 2315 RF_ComponentLabel_t clabel; 2316 int r,c; 2317 2318 raidPtr->mod_counter++; 2319 for (r = 0; r < raidPtr->numRow; r++) { 2320 for (c = 0; c < raidPtr->numCol; c++) { 2321 /* we don't want to touch (at all) a disk that has 2322 failed */ 2323 if (!RF_DEAD_DISK(raidPtr->Disks[r][c].status)) { 2324 raidread_component_label( 2325 raidPtr->Disks[r][c].dev, 2326 raidPtr->raid_cinfo[r][c].ci_vp, 2327 &clabel); 2328 if (clabel.status == rf_ds_spared) { 2329 /* XXX do something special... 2330 but whatever you do, don't 2331 try to access it!! */ 2332 } else { 2333 #if 0 2334 clabel.status = 2335 raidPtr->Disks[r][c].status; 2336 raidwrite_component_label( 2337 raidPtr->Disks[r][c].dev, 2338 raidPtr->raid_cinfo[r][c].ci_vp, 2339 &clabel); 2340 #endif 2341 raidmarkdirty( 2342 raidPtr->Disks[r][c].dev, 2343 raidPtr->raid_cinfo[r][c].ci_vp, 2344 raidPtr->mod_counter); 2345 } 2346 } 2347 } 2348 } 2349 /* printf("Component labels marked dirty.\n"); */ 2350 #if 0 2351 for( c = 0; c < raidPtr->numSpare ; c++) { 2352 sparecol = raidPtr->numCol + c; 2353 if (raidPtr->Disks[r][sparecol].status == rf_ds_used_spare) { 2354 /* 2355 2356 XXX this is where we get fancy and map this spare 2357 into it's correct spot in the array. 2358 2359 */ 2360 /* 2361 2362 we claim this disk is "optimal" if it's 2363 rf_ds_used_spare, as that means it should be 2364 directly substitutable for the disk it replaced. 2365 We note that too... 2366 2367 */ 2368 2369 for(i=0;i<raidPtr->numRow;i++) { 2370 for(j=0;j<raidPtr->numCol;j++) { 2371 if ((raidPtr->Disks[i][j].spareRow == 2372 r) && 2373 (raidPtr->Disks[i][j].spareCol == 2374 sparecol)) { 2375 srow = r; 2376 scol = sparecol; 2377 break; 2378 } 2379 } 2380 } 2381 2382 raidread_component_label( 2383 raidPtr->Disks[r][sparecol].dev, 2384 raidPtr->raid_cinfo[r][sparecol].ci_vp, 2385 &clabel); 2386 /* make sure status is noted */ 2387 clabel.version = RF_COMPONENT_LABEL_VERSION; 2388 clabel.mod_counter = raidPtr->mod_counter; 2389 clabel.serial_number = raidPtr->serial_number; 2390 clabel.row = srow; 2391 clabel.column = scol; 2392 clabel.num_rows = raidPtr->numRow; 2393 clabel.num_columns = raidPtr->numCol; 2394 clabel.clean = RF_RAID_DIRTY; /* changed in a bit*/ 2395 clabel.status = rf_ds_optimal; 2396 raidwrite_component_label( 2397 raidPtr->Disks[r][sparecol].dev, 2398 raidPtr->raid_cinfo[r][sparecol].ci_vp, 2399 &clabel); 2400 raidmarkclean( raidPtr->Disks[r][sparecol].dev, 2401 raidPtr->raid_cinfo[r][sparecol].ci_vp); 2402 } 2403 } 2404 2405 #endif 2406 } 2407 2408 2409 void 2410 rf_update_component_labels(raidPtr, final) 2411 RF_Raid_t *raidPtr; 2412 int final; 2413 { 2414 RF_ComponentLabel_t clabel; 2415 int sparecol; 2416 int r,c; 2417 int i,j; 2418 int srow, scol; 2419 2420 srow = -1; 2421 scol = -1; 2422 2423 /* XXX should do extra checks to make sure things really are clean, 2424 rather than blindly setting the clean bit... */ 2425 2426 raidPtr->mod_counter++; 2427 2428 for (r = 0; r < raidPtr->numRow; r++) { 2429 for (c = 0; c < raidPtr->numCol; c++) { 2430 if (raidPtr->Disks[r][c].status == rf_ds_optimal) { 2431 raidread_component_label( 2432 raidPtr->Disks[r][c].dev, 2433 raidPtr->raid_cinfo[r][c].ci_vp, 2434 &clabel); 2435 /* make sure status is noted */ 2436 clabel.status = rf_ds_optimal; 2437 /* bump the counter */ 2438 clabel.mod_counter = raidPtr->mod_counter; 2439 2440 raidwrite_component_label( 2441 raidPtr->Disks[r][c].dev, 2442 raidPtr->raid_cinfo[r][c].ci_vp, 2443 &clabel); 2444 if (final == RF_FINAL_COMPONENT_UPDATE) { 2445 if (raidPtr->parity_good == RF_RAID_CLEAN) { 2446 raidmarkclean( 2447 raidPtr->Disks[r][c].dev, 2448 raidPtr->raid_cinfo[r][c].ci_vp, 2449 raidPtr->mod_counter); 2450 } 2451 } 2452 } 2453 /* else we don't touch it.. */ 2454 } 2455 } 2456 2457 for( c = 0; c < raidPtr->numSpare ; c++) { 2458 sparecol = raidPtr->numCol + c; 2459 /* Need to ensure that the reconstruct actually completed! */ 2460 if (raidPtr->Disks[0][sparecol].status == rf_ds_used_spare) { 2461 /* 2462 2463 we claim this disk is "optimal" if it's 2464 rf_ds_used_spare, as that means it should be 2465 directly substitutable for the disk it replaced. 2466 We note that too... 2467 2468 */ 2469 2470 for(i=0;i<raidPtr->numRow;i++) { 2471 for(j=0;j<raidPtr->numCol;j++) { 2472 if ((raidPtr->Disks[i][j].spareRow == 2473 0) && 2474 (raidPtr->Disks[i][j].spareCol == 2475 sparecol)) { 2476 srow = i; 2477 scol = j; 2478 break; 2479 } 2480 } 2481 } 2482 2483 /* XXX shouldn't *really* need this... */ 2484 raidread_component_label( 2485 raidPtr->Disks[0][sparecol].dev, 2486 raidPtr->raid_cinfo[0][sparecol].ci_vp, 2487 &clabel); 2488 /* make sure status is noted */ 2489 2490 raid_init_component_label(raidPtr, &clabel); 2491 2492 clabel.mod_counter = raidPtr->mod_counter; 2493 clabel.row = srow; 2494 clabel.column = scol; 2495 clabel.status = rf_ds_optimal; 2496 2497 raidwrite_component_label( 2498 raidPtr->Disks[0][sparecol].dev, 2499 raidPtr->raid_cinfo[0][sparecol].ci_vp, 2500 &clabel); 2501 if (final == RF_FINAL_COMPONENT_UPDATE) { 2502 if (raidPtr->parity_good == RF_RAID_CLEAN) { 2503 raidmarkclean( raidPtr->Disks[0][sparecol].dev, 2504 raidPtr->raid_cinfo[0][sparecol].ci_vp, 2505 raidPtr->mod_counter); 2506 } 2507 } 2508 } 2509 } 2510 /* printf("Component labels updated\n"); */ 2511 } 2512 2513 void 2514 rf_close_component(raidPtr, vp, auto_configured) 2515 RF_Raid_t *raidPtr; 2516 struct vnode *vp; 2517 int auto_configured; 2518 { 2519 struct proc *p; 2520 2521 p = raidPtr->engine_thread; 2522 2523 if (vp != NULL) { 2524 if (auto_configured == 1) { 2525 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 2526 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED, 0); 2527 vput(vp); 2528 2529 } else { 2530 (void) vn_close(vp, FREAD | FWRITE, p->p_ucred, p); 2531 } 2532 } else { 2533 printf("vnode was NULL\n"); 2534 } 2535 } 2536 2537 2538 void 2539 rf_UnconfigureVnodes(raidPtr) 2540 RF_Raid_t *raidPtr; 2541 { 2542 int r,c; 2543 struct proc *p; 2544 struct vnode *vp; 2545 int acd; 2546 2547 2548 /* We take this opportunity to close the vnodes like we should.. */ 2549 2550 p = raidPtr->engine_thread; 2551 2552 for (r = 0; r < raidPtr->numRow; r++) { 2553 for (c = 0; c < raidPtr->numCol; c++) { 2554 printf("Closing vnode for row: %d col: %d\n", r, c); 2555 vp = raidPtr->raid_cinfo[r][c].ci_vp; 2556 acd = raidPtr->Disks[r][c].auto_configured; 2557 rf_close_component(raidPtr, vp, acd); 2558 raidPtr->raid_cinfo[r][c].ci_vp = NULL; 2559 raidPtr->Disks[r][c].auto_configured = 0; 2560 } 2561 } 2562 for (r = 0; r < raidPtr->numSpare; r++) { 2563 printf("Closing vnode for spare: %d\n", r); 2564 vp = raidPtr->raid_cinfo[0][raidPtr->numCol + r].ci_vp; 2565 acd = raidPtr->Disks[0][raidPtr->numCol + r].auto_configured; 2566 rf_close_component(raidPtr, vp, acd); 2567 raidPtr->raid_cinfo[0][raidPtr->numCol + r].ci_vp = NULL; 2568 raidPtr->Disks[0][raidPtr->numCol + r].auto_configured = 0; 2569 } 2570 } 2571 2572 2573 void 2574 rf_ReconThread(req) 2575 struct rf_recon_req *req; 2576 { 2577 int s; 2578 RF_Raid_t *raidPtr; 2579 2580 s = splbio(); 2581 raidPtr = (RF_Raid_t *) req->raidPtr; 2582 raidPtr->recon_in_progress = 1; 2583 2584 rf_FailDisk((RF_Raid_t *) req->raidPtr, req->row, req->col, 2585 ((req->flags & RF_FDFLAGS_RECON) ? 1 : 0)); 2586 2587 /* XXX get rid of this! we don't need it at all.. */ 2588 RF_Free(req, sizeof(*req)); 2589 2590 raidPtr->recon_in_progress = 0; 2591 splx(s); 2592 2593 /* That's all... */ 2594 kthread_exit(0); /* does not return */ 2595 } 2596 2597 void 2598 rf_RewriteParityThread(raidPtr) 2599 RF_Raid_t *raidPtr; 2600 { 2601 int retcode; 2602 int s; 2603 2604 raidPtr->parity_rewrite_in_progress = 1; 2605 s = splbio(); 2606 retcode = rf_RewriteParity(raidPtr); 2607 splx(s); 2608 if (retcode) { 2609 printf("raid%d: Error re-writing parity!\n",raidPtr->raidid); 2610 } else { 2611 /* set the clean bit! If we shutdown correctly, 2612 the clean bit on each component label will get 2613 set */ 2614 raidPtr->parity_good = RF_RAID_CLEAN; 2615 } 2616 raidPtr->parity_rewrite_in_progress = 0; 2617 2618 /* Anyone waiting for us to stop? If so, inform them... */ 2619 if (raidPtr->waitShutdown) { 2620 wakeup(&raidPtr->parity_rewrite_in_progress); 2621 } 2622 2623 /* That's all... */ 2624 kthread_exit(0); /* does not return */ 2625 } 2626 2627 2628 void 2629 rf_CopybackThread(raidPtr) 2630 RF_Raid_t *raidPtr; 2631 { 2632 int s; 2633 2634 raidPtr->copyback_in_progress = 1; 2635 s = splbio(); 2636 rf_CopybackReconstructedData(raidPtr); 2637 splx(s); 2638 raidPtr->copyback_in_progress = 0; 2639 2640 /* That's all... */ 2641 kthread_exit(0); /* does not return */ 2642 } 2643 2644 2645 void 2646 rf_ReconstructInPlaceThread(req) 2647 struct rf_recon_req *req; 2648 { 2649 int retcode; 2650 int s; 2651 RF_Raid_t *raidPtr; 2652 2653 s = splbio(); 2654 raidPtr = req->raidPtr; 2655 raidPtr->recon_in_progress = 1; 2656 retcode = rf_ReconstructInPlace(raidPtr, req->row, req->col); 2657 RF_Free(req, sizeof(*req)); 2658 raidPtr->recon_in_progress = 0; 2659 splx(s); 2660 2661 /* That's all... */ 2662 kthread_exit(0); /* does not return */ 2663 } 2664 2665 void 2666 rf_mountroot_hook(dev) 2667 struct device *dev; 2668 { 2669 2670 } 2671 2672 2673 RF_AutoConfig_t * 2674 rf_find_raid_components() 2675 { 2676 struct vnode *vp; 2677 struct disklabel label; 2678 struct device *dv; 2679 dev_t dev; 2680 int bmajor; 2681 int error; 2682 int i; 2683 int good_one; 2684 RF_ComponentLabel_t *clabel; 2685 RF_AutoConfig_t *ac_list; 2686 RF_AutoConfig_t *ac; 2687 2688 2689 /* initialize the AutoConfig list */ 2690 ac_list = NULL; 2691 2692 /* we begin by trolling through *all* the devices on the system */ 2693 2694 for (dv = alldevs.tqh_first; dv != NULL; 2695 dv = dv->dv_list.tqe_next) { 2696 2697 /* we are only interested in disks... */ 2698 if (dv->dv_class != DV_DISK) 2699 continue; 2700 2701 /* we don't care about floppies... */ 2702 if (!strcmp(dv->dv_cfdata->cf_driver->cd_name,"fd")) { 2703 continue; 2704 } 2705 2706 /* need to find the device_name_to_block_device_major stuff */ 2707 bmajor = devsw_name2blk(dv->dv_xname, NULL, 0); 2708 2709 /* get a vnode for the raw partition of this disk */ 2710 2711 dev = MAKEDISKDEV(bmajor, dv->dv_unit, RAW_PART); 2712 if (bdevvp(dev, &vp)) 2713 panic("RAID can't alloc vnode"); 2714 2715 error = VOP_OPEN(vp, FREAD, NOCRED, 0); 2716 2717 if (error) { 2718 /* "Who cares." Continue looking 2719 for something that exists*/ 2720 vput(vp); 2721 continue; 2722 } 2723 2724 /* Ok, the disk exists. Go get the disklabel. */ 2725 error = VOP_IOCTL(vp, DIOCGDINFO, (caddr_t)&label, 2726 FREAD, NOCRED, 0); 2727 if (error) { 2728 /* 2729 * XXX can't happen - open() would 2730 * have errored out (or faked up one) 2731 */ 2732 printf("can't get label for dev %s%c (%d)!?!?\n", 2733 dv->dv_xname, 'a' + RAW_PART, error); 2734 } 2735 2736 /* don't need this any more. We'll allocate it again 2737 a little later if we really do... */ 2738 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 2739 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED, 0); 2740 vput(vp); 2741 2742 for (i=0; i < label.d_npartitions; i++) { 2743 /* We only support partitions marked as RAID */ 2744 if (label.d_partitions[i].p_fstype != FS_RAID) 2745 continue; 2746 2747 dev = MAKEDISKDEV(bmajor, dv->dv_unit, i); 2748 if (bdevvp(dev, &vp)) 2749 panic("RAID can't alloc vnode"); 2750 2751 error = VOP_OPEN(vp, FREAD, NOCRED, 0); 2752 if (error) { 2753 /* Whatever... */ 2754 vput(vp); 2755 continue; 2756 } 2757 2758 good_one = 0; 2759 2760 clabel = (RF_ComponentLabel_t *) 2761 malloc(sizeof(RF_ComponentLabel_t), 2762 M_RAIDFRAME, M_NOWAIT); 2763 if (clabel == NULL) { 2764 /* XXX CLEANUP HERE */ 2765 printf("RAID auto config: out of memory!\n"); 2766 return(NULL); /* XXX probably should panic? */ 2767 } 2768 2769 if (!raidread_component_label(dev, vp, clabel)) { 2770 /* Got the label. Does it look reasonable? */ 2771 if (rf_reasonable_label(clabel) && 2772 (clabel->partitionSize <= 2773 label.d_partitions[i].p_size)) { 2774 #if DEBUG 2775 printf("Component on: %s%c: %d\n", 2776 dv->dv_xname, 'a'+i, 2777 label.d_partitions[i].p_size); 2778 rf_print_component_label(clabel); 2779 #endif 2780 /* if it's reasonable, add it, 2781 else ignore it. */ 2782 ac = (RF_AutoConfig_t *) 2783 malloc(sizeof(RF_AutoConfig_t), 2784 M_RAIDFRAME, 2785 M_NOWAIT); 2786 if (ac == NULL) { 2787 /* XXX should panic?? */ 2788 return(NULL); 2789 } 2790 2791 sprintf(ac->devname, "%s%c", 2792 dv->dv_xname, 'a'+i); 2793 ac->dev = dev; 2794 ac->vp = vp; 2795 ac->clabel = clabel; 2796 ac->next = ac_list; 2797 ac_list = ac; 2798 good_one = 1; 2799 } 2800 } 2801 if (!good_one) { 2802 /* cleanup */ 2803 free(clabel, M_RAIDFRAME); 2804 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 2805 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED, 0); 2806 vput(vp); 2807 } 2808 } 2809 } 2810 return(ac_list); 2811 } 2812 2813 static int 2814 rf_reasonable_label(clabel) 2815 RF_ComponentLabel_t *clabel; 2816 { 2817 2818 if (((clabel->version==RF_COMPONENT_LABEL_VERSION_1) || 2819 (clabel->version==RF_COMPONENT_LABEL_VERSION)) && 2820 ((clabel->clean == RF_RAID_CLEAN) || 2821 (clabel->clean == RF_RAID_DIRTY)) && 2822 clabel->row >=0 && 2823 clabel->column >= 0 && 2824 clabel->num_rows > 0 && 2825 clabel->num_columns > 0 && 2826 clabel->row < clabel->num_rows && 2827 clabel->column < clabel->num_columns && 2828 clabel->blockSize > 0 && 2829 clabel->numBlocks > 0) { 2830 /* label looks reasonable enough... */ 2831 return(1); 2832 } 2833 return(0); 2834 } 2835 2836 2837 void 2838 rf_print_component_label(clabel) 2839 RF_ComponentLabel_t *clabel; 2840 { 2841 printf(" Row: %d Column: %d Num Rows: %d Num Columns: %d\n", 2842 clabel->row, clabel->column, 2843 clabel->num_rows, clabel->num_columns); 2844 printf(" Version: %d Serial Number: %d Mod Counter: %d\n", 2845 clabel->version, clabel->serial_number, 2846 clabel->mod_counter); 2847 printf(" Clean: %s Status: %d\n", 2848 clabel->clean ? "Yes" : "No", clabel->status ); 2849 printf(" sectPerSU: %d SUsPerPU: %d SUsPerRU: %d\n", 2850 clabel->sectPerSU, clabel->SUsPerPU, clabel->SUsPerRU); 2851 printf(" RAID Level: %c blocksize: %d numBlocks: %d\n", 2852 (char) clabel->parityConfig, clabel->blockSize, 2853 clabel->numBlocks); 2854 printf(" Autoconfig: %s\n", clabel->autoconfigure ? "Yes" : "No" ); 2855 printf(" Contains root partition: %s\n", 2856 clabel->root_partition ? "Yes" : "No" ); 2857 printf(" Last configured as: raid%d\n", clabel->last_unit ); 2858 #if 0 2859 printf(" Config order: %d\n", clabel->config_order); 2860 #endif 2861 2862 } 2863 2864 RF_ConfigSet_t * 2865 rf_create_auto_sets(ac_list) 2866 RF_AutoConfig_t *ac_list; 2867 { 2868 RF_AutoConfig_t *ac; 2869 RF_ConfigSet_t *config_sets; 2870 RF_ConfigSet_t *cset; 2871 RF_AutoConfig_t *ac_next; 2872 2873 2874 config_sets = NULL; 2875 2876 /* Go through the AutoConfig list, and figure out which components 2877 belong to what sets. */ 2878 ac = ac_list; 2879 while(ac!=NULL) { 2880 /* we're going to putz with ac->next, so save it here 2881 for use at the end of the loop */ 2882 ac_next = ac->next; 2883 2884 if (config_sets == NULL) { 2885 /* will need at least this one... */ 2886 config_sets = (RF_ConfigSet_t *) 2887 malloc(sizeof(RF_ConfigSet_t), 2888 M_RAIDFRAME, M_NOWAIT); 2889 if (config_sets == NULL) { 2890 panic("rf_create_auto_sets: No memory!\n"); 2891 } 2892 /* this one is easy :) */ 2893 config_sets->ac = ac; 2894 config_sets->next = NULL; 2895 config_sets->rootable = 0; 2896 ac->next = NULL; 2897 } else { 2898 /* which set does this component fit into? */ 2899 cset = config_sets; 2900 while(cset!=NULL) { 2901 if (rf_does_it_fit(cset, ac)) { 2902 /* looks like it matches... */ 2903 ac->next = cset->ac; 2904 cset->ac = ac; 2905 break; 2906 } 2907 cset = cset->next; 2908 } 2909 if (cset==NULL) { 2910 /* didn't find a match above... new set..*/ 2911 cset = (RF_ConfigSet_t *) 2912 malloc(sizeof(RF_ConfigSet_t), 2913 M_RAIDFRAME, M_NOWAIT); 2914 if (cset == NULL) { 2915 panic("rf_create_auto_sets: No memory!\n"); 2916 } 2917 cset->ac = ac; 2918 ac->next = NULL; 2919 cset->next = config_sets; 2920 cset->rootable = 0; 2921 config_sets = cset; 2922 } 2923 } 2924 ac = ac_next; 2925 } 2926 2927 2928 return(config_sets); 2929 } 2930 2931 static int 2932 rf_does_it_fit(cset, ac) 2933 RF_ConfigSet_t *cset; 2934 RF_AutoConfig_t *ac; 2935 { 2936 RF_ComponentLabel_t *clabel1, *clabel2; 2937 2938 /* If this one matches the *first* one in the set, that's good 2939 enough, since the other members of the set would have been 2940 through here too... */ 2941 /* note that we are not checking partitionSize here.. 2942 2943 Note that we are also not checking the mod_counters here. 2944 If everything else matches execpt the mod_counter, that's 2945 good enough for this test. We will deal with the mod_counters 2946 a little later in the autoconfiguration process. 2947 2948 (clabel1->mod_counter == clabel2->mod_counter) && 2949 2950 The reason we don't check for this is that failed disks 2951 will have lower modification counts. If those disks are 2952 not added to the set they used to belong to, then they will 2953 form their own set, which may result in 2 different sets, 2954 for example, competing to be configured at raid0, and 2955 perhaps competing to be the root filesystem set. If the 2956 wrong ones get configured, or both attempt to become /, 2957 weird behaviour and or serious lossage will occur. Thus we 2958 need to bring them into the fold here, and kick them out at 2959 a later point. 2960 2961 */ 2962 2963 clabel1 = cset->ac->clabel; 2964 clabel2 = ac->clabel; 2965 if ((clabel1->version == clabel2->version) && 2966 (clabel1->serial_number == clabel2->serial_number) && 2967 (clabel1->num_rows == clabel2->num_rows) && 2968 (clabel1->num_columns == clabel2->num_columns) && 2969 (clabel1->sectPerSU == clabel2->sectPerSU) && 2970 (clabel1->SUsPerPU == clabel2->SUsPerPU) && 2971 (clabel1->SUsPerRU == clabel2->SUsPerRU) && 2972 (clabel1->parityConfig == clabel2->parityConfig) && 2973 (clabel1->maxOutstanding == clabel2->maxOutstanding) && 2974 (clabel1->blockSize == clabel2->blockSize) && 2975 (clabel1->numBlocks == clabel2->numBlocks) && 2976 (clabel1->autoconfigure == clabel2->autoconfigure) && 2977 (clabel1->root_partition == clabel2->root_partition) && 2978 (clabel1->last_unit == clabel2->last_unit) && 2979 (clabel1->config_order == clabel2->config_order)) { 2980 /* if it get's here, it almost *has* to be a match */ 2981 } else { 2982 /* it's not consistent with somebody in the set.. 2983 punt */ 2984 return(0); 2985 } 2986 /* all was fine.. it must fit... */ 2987 return(1); 2988 } 2989 2990 int 2991 rf_have_enough_components(cset) 2992 RF_ConfigSet_t *cset; 2993 { 2994 RF_AutoConfig_t *ac; 2995 RF_AutoConfig_t *auto_config; 2996 RF_ComponentLabel_t *clabel; 2997 int r,c; 2998 int num_rows; 2999 int num_cols; 3000 int num_missing; 3001 int mod_counter; 3002 int mod_counter_found; 3003 int even_pair_failed; 3004 char parity_type; 3005 3006 3007 /* check to see that we have enough 'live' components 3008 of this set. If so, we can configure it if necessary */ 3009 3010 num_rows = cset->ac->clabel->num_rows; 3011 num_cols = cset->ac->clabel->num_columns; 3012 parity_type = cset->ac->clabel->parityConfig; 3013 3014 /* XXX Check for duplicate components!?!?!? */ 3015 3016 /* Determine what the mod_counter is supposed to be for this set. */ 3017 3018 mod_counter_found = 0; 3019 mod_counter = 0; 3020 ac = cset->ac; 3021 while(ac!=NULL) { 3022 if (mod_counter_found==0) { 3023 mod_counter = ac->clabel->mod_counter; 3024 mod_counter_found = 1; 3025 } else { 3026 if (ac->clabel->mod_counter > mod_counter) { 3027 mod_counter = ac->clabel->mod_counter; 3028 } 3029 } 3030 ac = ac->next; 3031 } 3032 3033 num_missing = 0; 3034 auto_config = cset->ac; 3035 3036 for(r=0; r<num_rows; r++) { 3037 even_pair_failed = 0; 3038 for(c=0; c<num_cols; c++) { 3039 ac = auto_config; 3040 while(ac!=NULL) { 3041 if ((ac->clabel->row == r) && 3042 (ac->clabel->column == c) && 3043 (ac->clabel->mod_counter == mod_counter)) { 3044 /* it's this one... */ 3045 #if DEBUG 3046 printf("Found: %s at %d,%d\n", 3047 ac->devname,r,c); 3048 #endif 3049 break; 3050 } 3051 ac=ac->next; 3052 } 3053 if (ac==NULL) { 3054 /* Didn't find one here! */ 3055 /* special case for RAID 1, especially 3056 where there are more than 2 3057 components (where RAIDframe treats 3058 things a little differently :( ) */ 3059 if (parity_type == '1') { 3060 if (c%2 == 0) { /* even component */ 3061 even_pair_failed = 1; 3062 } else { /* odd component. If 3063 we're failed, and 3064 so is the even 3065 component, it's 3066 "Good Night, Charlie" */ 3067 if (even_pair_failed == 1) { 3068 return(0); 3069 } 3070 } 3071 } else { 3072 /* normal accounting */ 3073 num_missing++; 3074 } 3075 } 3076 if ((parity_type == '1') && (c%2 == 1)) { 3077 /* Just did an even component, and we didn't 3078 bail.. reset the even_pair_failed flag, 3079 and go on to the next component.... */ 3080 even_pair_failed = 0; 3081 } 3082 } 3083 } 3084 3085 clabel = cset->ac->clabel; 3086 3087 if (((clabel->parityConfig == '0') && (num_missing > 0)) || 3088 ((clabel->parityConfig == '4') && (num_missing > 1)) || 3089 ((clabel->parityConfig == '5') && (num_missing > 1))) { 3090 /* XXX this needs to be made *much* more general */ 3091 /* Too many failures */ 3092 return(0); 3093 } 3094 /* otherwise, all is well, and we've got enough to take a kick 3095 at autoconfiguring this set */ 3096 return(1); 3097 } 3098 3099 void 3100 rf_create_configuration(ac,config,raidPtr) 3101 RF_AutoConfig_t *ac; 3102 RF_Config_t *config; 3103 RF_Raid_t *raidPtr; 3104 { 3105 RF_ComponentLabel_t *clabel; 3106 int i; 3107 3108 clabel = ac->clabel; 3109 3110 /* 1. Fill in the common stuff */ 3111 config->numRow = clabel->num_rows; 3112 config->numCol = clabel->num_columns; 3113 config->numSpare = 0; /* XXX should this be set here? */ 3114 config->sectPerSU = clabel->sectPerSU; 3115 config->SUsPerPU = clabel->SUsPerPU; 3116 config->SUsPerRU = clabel->SUsPerRU; 3117 config->parityConfig = clabel->parityConfig; 3118 /* XXX... */ 3119 strcpy(config->diskQueueType,"fifo"); 3120 config->maxOutstandingDiskReqs = clabel->maxOutstanding; 3121 config->layoutSpecificSize = 0; /* XXX ?? */ 3122 3123 while(ac!=NULL) { 3124 /* row/col values will be in range due to the checks 3125 in reasonable_label() */ 3126 strcpy(config->devnames[ac->clabel->row][ac->clabel->column], 3127 ac->devname); 3128 ac = ac->next; 3129 } 3130 3131 for(i=0;i<RF_MAXDBGV;i++) { 3132 config->debugVars[i][0] = NULL; 3133 } 3134 } 3135 3136 int 3137 rf_set_autoconfig(raidPtr, new_value) 3138 RF_Raid_t *raidPtr; 3139 int new_value; 3140 { 3141 RF_ComponentLabel_t clabel; 3142 struct vnode *vp; 3143 dev_t dev; 3144 int row, column; 3145 3146 raidPtr->autoconfigure = new_value; 3147 for(row=0; row<raidPtr->numRow; row++) { 3148 for(column=0; column<raidPtr->numCol; column++) { 3149 if (raidPtr->Disks[row][column].status == 3150 rf_ds_optimal) { 3151 dev = raidPtr->Disks[row][column].dev; 3152 vp = raidPtr->raid_cinfo[row][column].ci_vp; 3153 raidread_component_label(dev, vp, &clabel); 3154 clabel.autoconfigure = new_value; 3155 raidwrite_component_label(dev, vp, &clabel); 3156 } 3157 } 3158 } 3159 return(new_value); 3160 } 3161 3162 int 3163 rf_set_rootpartition(raidPtr, new_value) 3164 RF_Raid_t *raidPtr; 3165 int new_value; 3166 { 3167 RF_ComponentLabel_t clabel; 3168 struct vnode *vp; 3169 dev_t dev; 3170 int row, column; 3171 3172 raidPtr->root_partition = new_value; 3173 for(row=0; row<raidPtr->numRow; row++) { 3174 for(column=0; column<raidPtr->numCol; column++) { 3175 if (raidPtr->Disks[row][column].status == 3176 rf_ds_optimal) { 3177 dev = raidPtr->Disks[row][column].dev; 3178 vp = raidPtr->raid_cinfo[row][column].ci_vp; 3179 raidread_component_label(dev, vp, &clabel); 3180 clabel.root_partition = new_value; 3181 raidwrite_component_label(dev, vp, &clabel); 3182 } 3183 } 3184 } 3185 return(new_value); 3186 } 3187 3188 void 3189 rf_release_all_vps(cset) 3190 RF_ConfigSet_t *cset; 3191 { 3192 RF_AutoConfig_t *ac; 3193 3194 ac = cset->ac; 3195 while(ac!=NULL) { 3196 /* Close the vp, and give it back */ 3197 if (ac->vp) { 3198 vn_lock(ac->vp, LK_EXCLUSIVE | LK_RETRY); 3199 VOP_CLOSE(ac->vp, FREAD, NOCRED, 0); 3200 vput(ac->vp); 3201 ac->vp = NULL; 3202 } 3203 ac = ac->next; 3204 } 3205 } 3206 3207 3208 void 3209 rf_cleanup_config_set(cset) 3210 RF_ConfigSet_t *cset; 3211 { 3212 RF_AutoConfig_t *ac; 3213 RF_AutoConfig_t *next_ac; 3214 3215 ac = cset->ac; 3216 while(ac!=NULL) { 3217 next_ac = ac->next; 3218 /* nuke the label */ 3219 free(ac->clabel, M_RAIDFRAME); 3220 /* cleanup the config structure */ 3221 free(ac, M_RAIDFRAME); 3222 /* "next.." */ 3223 ac = next_ac; 3224 } 3225 /* and, finally, nuke the config set */ 3226 free(cset, M_RAIDFRAME); 3227 } 3228 3229 3230 void 3231 raid_init_component_label(raidPtr, clabel) 3232 RF_Raid_t *raidPtr; 3233 RF_ComponentLabel_t *clabel; 3234 { 3235 /* current version number */ 3236 clabel->version = RF_COMPONENT_LABEL_VERSION; 3237 clabel->serial_number = raidPtr->serial_number; 3238 clabel->mod_counter = raidPtr->mod_counter; 3239 clabel->num_rows = raidPtr->numRow; 3240 clabel->num_columns = raidPtr->numCol; 3241 clabel->clean = RF_RAID_DIRTY; /* not clean */ 3242 clabel->status = rf_ds_optimal; /* "It's good!" */ 3243 3244 clabel->sectPerSU = raidPtr->Layout.sectorsPerStripeUnit; 3245 clabel->SUsPerPU = raidPtr->Layout.SUsPerPU; 3246 clabel->SUsPerRU = raidPtr->Layout.SUsPerRU; 3247 3248 clabel->blockSize = raidPtr->bytesPerSector; 3249 clabel->numBlocks = raidPtr->sectorsPerDisk; 3250 3251 /* XXX not portable */ 3252 clabel->parityConfig = raidPtr->Layout.map->parityConfig; 3253 clabel->maxOutstanding = raidPtr->maxOutstanding; 3254 clabel->autoconfigure = raidPtr->autoconfigure; 3255 clabel->root_partition = raidPtr->root_partition; 3256 clabel->last_unit = raidPtr->raidid; 3257 clabel->config_order = raidPtr->config_order; 3258 } 3259 3260 int 3261 rf_auto_config_set(cset,unit) 3262 RF_ConfigSet_t *cset; 3263 int *unit; 3264 { 3265 RF_Raid_t *raidPtr; 3266 RF_Config_t *config; 3267 int raidID; 3268 int retcode; 3269 3270 printf("RAID autoconfigure\n"); 3271 3272 retcode = 0; 3273 *unit = -1; 3274 3275 /* 1. Create a config structure */ 3276 3277 config = (RF_Config_t *)malloc(sizeof(RF_Config_t), 3278 M_RAIDFRAME, 3279 M_NOWAIT); 3280 if (config==NULL) { 3281 printf("Out of mem!?!?\n"); 3282 /* XXX do something more intelligent here. */ 3283 return(1); 3284 } 3285 3286 memset(config, 0, sizeof(RF_Config_t)); 3287 3288 /* XXX raidID needs to be set correctly.. */ 3289 3290 /* 3291 2. Figure out what RAID ID this one is supposed to live at 3292 See if we can get the same RAID dev that it was configured 3293 on last time.. 3294 */ 3295 3296 raidID = cset->ac->clabel->last_unit; 3297 if ((raidID < 0) || (raidID >= numraid)) { 3298 /* let's not wander off into lala land. */ 3299 raidID = numraid - 1; 3300 } 3301 if (raidPtrs[raidID]->valid != 0) { 3302 3303 /* 3304 Nope... Go looking for an alternative... 3305 Start high so we don't immediately use raid0 if that's 3306 not taken. 3307 */ 3308 3309 for(raidID = numraid - 1; raidID >= 0; raidID--) { 3310 if (raidPtrs[raidID]->valid == 0) { 3311 /* can use this one! */ 3312 break; 3313 } 3314 } 3315 } 3316 3317 if (raidID < 0) { 3318 /* punt... */ 3319 printf("Unable to auto configure this set!\n"); 3320 printf("(Out of RAID devs!)\n"); 3321 return(1); 3322 } 3323 printf("Configuring raid%d:\n",raidID); 3324 raidPtr = raidPtrs[raidID]; 3325 3326 /* XXX all this stuff should be done SOMEWHERE ELSE! */ 3327 raidPtr->raidid = raidID; 3328 raidPtr->openings = RAIDOUTSTANDING; 3329 3330 /* 3. Build the configuration structure */ 3331 rf_create_configuration(cset->ac, config, raidPtr); 3332 3333 /* 4. Do the configuration */ 3334 retcode = rf_Configure(raidPtr, config, cset->ac); 3335 3336 if (retcode == 0) { 3337 3338 raidinit(raidPtrs[raidID]); 3339 3340 rf_markalldirty(raidPtrs[raidID]); 3341 raidPtrs[raidID]->autoconfigure = 1; /* XXX do this here? */ 3342 if (cset->ac->clabel->root_partition==1) { 3343 /* everything configured just fine. Make a note 3344 that this set is eligible to be root. */ 3345 cset->rootable = 1; 3346 /* XXX do this here? */ 3347 raidPtrs[raidID]->root_partition = 1; 3348 } 3349 } 3350 3351 /* 5. Cleanup */ 3352 free(config, M_RAIDFRAME); 3353 3354 *unit = raidID; 3355 return(retcode); 3356 } 3357 3358 void 3359 rf_disk_unbusy(desc) 3360 RF_RaidAccessDesc_t *desc; 3361 { 3362 struct buf *bp; 3363 3364 bp = (struct buf *)desc->bp; 3365 disk_unbusy(&raid_softc[desc->raidPtr->raidid].sc_dkdev, 3366 (bp->b_bcount - bp->b_resid)); 3367 } 3368
Indexes created Tue Sep 30 11:09:46 GMT 2025