rf_netbsdkintf.c revision 1.178.2.1
1 /* $NetBSD: rf_netbsdkintf.c,v 1.178.2.1 2004/07/02 18:03:06 he Exp $ */ 2 /*- 3 * Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Greg Oster; Jason R. Thorpe. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the NetBSD 20 * Foundation, Inc. and its contributors. 21 * 4. Neither the name of The NetBSD Foundation nor the names of its 22 * contributors may be used to endorse or promote products derived 23 * from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * Copyright (c) 1990, 1993 40 * The Regents of the University of California. All rights reserved. 41 * 42 * This code is derived from software contributed to Berkeley by 43 * the Systems Programming Group of the University of Utah Computer 44 * Science Department. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 * 70 * from: Utah $Hdr: cd.c 1.6 90/11/28$ 71 * 72 * @(#)cd.c 8.2 (Berkeley) 11/16/93 73 */ 74 75 /* 76 * Copyright (c) 1988 University of Utah. 77 * 78 * This code is derived from software contributed to Berkeley by 79 * the Systems Programming Group of the University of Utah Computer 80 * Science Department. 81 * 82 * Redistribution and use in source and binary forms, with or without 83 * modification, are permitted provided that the following conditions 84 * are met: 85 * 1. Redistributions of source code must retain the above copyright 86 * notice, this list of conditions and the following disclaimer. 87 * 2. Redistributions in binary form must reproduce the above copyright 88 * notice, this list of conditions and the following disclaimer in the 89 * documentation and/or other materials provided with the distribution. 90 * 3. All advertising materials mentioning features or use of this software 91 * must display the following acknowledgement: 92 * This product includes software developed by the University of 93 * California, Berkeley and its contributors. 94 * 4. Neither the name of the University nor the names of its contributors 95 * may be used to endorse or promote products derived from this software 96 * without specific prior written permission. 97 * 98 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 99 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 100 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 101 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 102 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 103 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 104 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 105 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 106 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 107 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 108 * SUCH DAMAGE. 109 * 110 * from: Utah $Hdr: cd.c 1.6 90/11/28$ 111 * 112 * @(#)cd.c 8.2 (Berkeley) 11/16/93 113 */ 114 115 /* 116 * Copyright (c) 1995 Carnegie-Mellon University. 117 * All rights reserved. 118 * 119 * Authors: Mark Holland, Jim Zelenka 120 * 121 * Permission to use, copy, modify and distribute this software and 122 * its documentation is hereby granted, provided that both the copyright 123 * notice and this permission notice appear in all copies of the 124 * software, derivative works or modified versions, and any portions 125 * thereof, and that both notices appear in supporting documentation. 126 * 127 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 128 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 129 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 130 * 131 * Carnegie Mellon requests users of this software to return to 132 * 133 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 134 * School of Computer Science 135 * Carnegie Mellon University 136 * Pittsburgh PA 15213-3890 137 * 138 * any improvements or extensions that they make and grant Carnegie the 139 * rights to redistribute these changes. 140 */ 141 142 /*********************************************************** 143 * 144 * rf_kintf.c -- the kernel interface routines for RAIDframe 145 * 146 ***********************************************************/ 147 148 #include <sys/cdefs.h> 149 __KERNEL_RCSID(0, "$NetBSD: rf_netbsdkintf.c,v 1.178.2.1 2004/07/02 18:03:06 he Exp $"); 150 151 #include <sys/param.h> 152 #include <sys/errno.h> 153 #include <sys/pool.h> 154 #include <sys/proc.h> 155 #include <sys/queue.h> 156 #include <sys/disk.h> 157 #include <sys/device.h> 158 #include <sys/stat.h> 159 #include <sys/ioctl.h> 160 #include <sys/fcntl.h> 161 #include <sys/systm.h> 162 #include <sys/namei.h> 163 #include <sys/vnode.h> 164 #include <sys/disklabel.h> 165 #include <sys/conf.h> 166 #include <sys/lock.h> 167 #include <sys/buf.h> 168 #include <sys/user.h> 169 #include <sys/reboot.h> 170 171 #include <dev/raidframe/raidframevar.h> 172 #include <dev/raidframe/raidframeio.h> 173 #include "raid.h" 174 #include "opt_raid_autoconfig.h" 175 #include "rf_raid.h" 176 #include "rf_copyback.h" 177 #include "rf_dag.h" 178 #include "rf_dagflags.h" 179 #include "rf_desc.h" 180 #include "rf_diskqueue.h" 181 #include "rf_etimer.h" 182 #include "rf_general.h" 183 #include "rf_kintf.h" 184 #include "rf_options.h" 185 #include "rf_driver.h" 186 #include "rf_parityscan.h" 187 #include "rf_threadstuff.h" 188 189 #ifdef DEBUG 190 int rf_kdebug_level = 0; 191 #define db1_printf(a) if (rf_kdebug_level > 0) printf a 192 #else /* DEBUG */ 193 #define db1_printf(a) { } 194 #endif /* DEBUG */ 195 196 static RF_Raid_t **raidPtrs; /* global raid device descriptors */ 197 198 RF_DECLARE_STATIC_MUTEX(rf_sparet_wait_mutex) 199 200 static RF_SparetWait_t *rf_sparet_wait_queue; /* requests to install a 201 * spare table */ 202 static RF_SparetWait_t *rf_sparet_resp_queue; /* responses from 203 * installation process */ 204 205 MALLOC_DEFINE(M_RAIDFRAME, "RAIDframe", "RAIDframe structures"); 206 207 /* prototypes */ 208 static void KernelWakeupFunc(struct buf * bp); 209 static void InitBP(struct buf * bp, struct vnode *, unsigned rw_flag, 210 dev_t dev, RF_SectorNum_t startSect, 211 RF_SectorCount_t numSect, caddr_t buf, 212 void (*cbFunc) (struct buf *), void *cbArg, 213 int logBytesPerSector, struct proc * b_proc); 214 static void raidinit(RF_Raid_t *); 215 216 void raidattach(int); 217 218 dev_type_open(raidopen); 219 dev_type_close(raidclose); 220 dev_type_read(raidread); 221 dev_type_write(raidwrite); 222 dev_type_ioctl(raidioctl); 223 dev_type_strategy(raidstrategy); 224 dev_type_dump(raiddump); 225 dev_type_size(raidsize); 226 227 const struct bdevsw raid_bdevsw = { 228 raidopen, raidclose, raidstrategy, raidioctl, 229 raiddump, raidsize, D_DISK 230 }; 231 232 const struct cdevsw raid_cdevsw = { 233 raidopen, raidclose, raidread, raidwrite, raidioctl, 234 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 235 }; 236 237 /* 238 * Pilfered from ccd.c 239 */ 240 241 struct raidbuf { 242 struct buf rf_buf; /* new I/O buf. MUST BE FIRST!!! */ 243 struct buf *rf_obp; /* ptr. to original I/O buf */ 244 RF_DiskQueueData_t *req;/* the request that this was part of.. */ 245 }; 246 247 /* XXX Not sure if the following should be replacing the raidPtrs above, 248 or if it should be used in conjunction with that... 249 */ 250 251 struct raid_softc { 252 int sc_flags; /* flags */ 253 int sc_cflags; /* configuration flags */ 254 size_t sc_size; /* size of the raid device */ 255 char sc_xname[20]; /* XXX external name */ 256 struct disk sc_dkdev; /* generic disk device info */ 257 struct bufq_state buf_queue; /* used for the device queue */ 258 }; 259 /* sc_flags */ 260 #define RAIDF_INITED 0x01 /* unit has been initialized */ 261 #define RAIDF_WLABEL 0x02 /* label area is writable */ 262 #define RAIDF_LABELLING 0x04 /* unit is currently being labelled */ 263 #define RAIDF_WANTED 0x40 /* someone is waiting to obtain a lock */ 264 #define RAIDF_LOCKED 0x80 /* unit is locked */ 265 266 #define raidunit(x) DISKUNIT(x) 267 int numraid = 0; 268 269 /* 270 * Allow RAIDOUTSTANDING number of simultaneous IO's to this RAID device. 271 * Be aware that large numbers can allow the driver to consume a lot of 272 * kernel memory, especially on writes, and in degraded mode reads. 273 * 274 * For example: with a stripe width of 64 blocks (32k) and 5 disks, 275 * a single 64K write will typically require 64K for the old data, 276 * 64K for the old parity, and 64K for the new parity, for a total 277 * of 192K (if the parity buffer is not re-used immediately). 278 * Even it if is used immediately, that's still 128K, which when multiplied 279 * by say 10 requests, is 1280K, *on top* of the 640K of incoming data. 280 * 281 * Now in degraded mode, for example, a 64K read on the above setup may 282 * require data reconstruction, which will require *all* of the 4 remaining 283 * disks to participate -- 4 * 32K/disk == 128K again. 284 */ 285 286 #ifndef RAIDOUTSTANDING 287 #define RAIDOUTSTANDING 6 288 #endif 289 290 #define RAIDLABELDEV(dev) \ 291 (MAKEDISKDEV(major((dev)), raidunit((dev)), RAW_PART)) 292 293 /* declared here, and made public, for the benefit of KVM stuff.. */ 294 struct raid_softc *raid_softc; 295 296 static void raidgetdefaultlabel(RF_Raid_t *, struct raid_softc *, 297 struct disklabel *); 298 static void raidgetdisklabel(dev_t); 299 static void raidmakedisklabel(struct raid_softc *); 300 301 static int raidlock(struct raid_softc *); 302 static void raidunlock(struct raid_softc *); 303 304 static void rf_markalldirty(RF_Raid_t *); 305 306 struct device *raidrootdev; 307 308 void rf_ReconThread(struct rf_recon_req *); 309 void rf_RewriteParityThread(RF_Raid_t *raidPtr); 310 void rf_CopybackThread(RF_Raid_t *raidPtr); 311 void rf_ReconstructInPlaceThread(struct rf_recon_req *); 312 int rf_autoconfig(struct device *self); 313 void rf_buildroothack(RF_ConfigSet_t *); 314 315 RF_AutoConfig_t *rf_find_raid_components(void); 316 RF_ConfigSet_t *rf_create_auto_sets(RF_AutoConfig_t *); 317 static int rf_does_it_fit(RF_ConfigSet_t *,RF_AutoConfig_t *); 318 static int rf_reasonable_label(RF_ComponentLabel_t *); 319 void rf_create_configuration(RF_AutoConfig_t *,RF_Config_t *, RF_Raid_t *); 320 int rf_set_autoconfig(RF_Raid_t *, int); 321 int rf_set_rootpartition(RF_Raid_t *, int); 322 void rf_release_all_vps(RF_ConfigSet_t *); 323 void rf_cleanup_config_set(RF_ConfigSet_t *); 324 int rf_have_enough_components(RF_ConfigSet_t *); 325 int rf_auto_config_set(RF_ConfigSet_t *, int *); 326 327 static int raidautoconfig = 0; /* Debugging, mostly. Set to 0 to not 328 allow autoconfig to take place. 329 Note that this is overridden by having 330 RAID_AUTOCONFIG as an option in the 331 kernel config file. */ 332 333 struct RF_Pools_s rf_pools; 334 335 void 336 raidattach(int num) 337 { 338 int raidID; 339 int i, rc; 340 341 #ifdef DEBUG 342 printf("raidattach: Asked for %d units\n", num); 343 #endif 344 345 if (num <= 0) { 346 #ifdef DIAGNOSTIC 347 panic("raidattach: count <= 0"); 348 #endif 349 return; 350 } 351 /* This is where all the initialization stuff gets done. */ 352 353 numraid = num; 354 355 /* Make some space for requested number of units... */ 356 357 RF_Malloc(raidPtrs, num * sizeof(RF_Raid_t *), (RF_Raid_t **)); 358 if (raidPtrs == NULL) { 359 panic("raidPtrs is NULL!!"); 360 } 361 362 /* Initialize the component buffer pool. */ 363 rf_pool_init(&rf_pools.cbuf, sizeof(struct raidbuf), 364 "raidpl", num * RAIDOUTSTANDING, 365 2 * num * RAIDOUTSTANDING); 366 367 rf_mutex_init(&rf_sparet_wait_mutex); 368 369 rf_sparet_wait_queue = rf_sparet_resp_queue = NULL; 370 371 for (i = 0; i < num; i++) 372 raidPtrs[i] = NULL; 373 rc = rf_BootRaidframe(); 374 if (rc == 0) 375 printf("Kernelized RAIDframe activated\n"); 376 else 377 panic("Serious error booting RAID!!"); 378 379 /* put together some datastructures like the CCD device does.. This 380 * lets us lock the device and what-not when it gets opened. */ 381 382 raid_softc = (struct raid_softc *) 383 malloc(num * sizeof(struct raid_softc), 384 M_RAIDFRAME, M_NOWAIT); 385 if (raid_softc == NULL) { 386 printf("WARNING: no memory for RAIDframe driver\n"); 387 return; 388 } 389 390 memset(raid_softc, 0, num * sizeof(struct raid_softc)); 391 392 raidrootdev = (struct device *)malloc(num * sizeof(struct device), 393 M_RAIDFRAME, M_NOWAIT); 394 if (raidrootdev == NULL) { 395 panic("No memory for RAIDframe driver!!?!?!"); 396 } 397 398 for (raidID = 0; raidID < num; raidID++) { 399 bufq_alloc(&raid_softc[raidID].buf_queue, BUFQ_FCFS); 400 401 raidrootdev[raidID].dv_class = DV_DISK; 402 raidrootdev[raidID].dv_cfdata = NULL; 403 raidrootdev[raidID].dv_unit = raidID; 404 raidrootdev[raidID].dv_parent = NULL; 405 raidrootdev[raidID].dv_flags = 0; 406 sprintf(raidrootdev[raidID].dv_xname,"raid%d",raidID); 407 408 RF_Malloc(raidPtrs[raidID], sizeof(RF_Raid_t), 409 (RF_Raid_t *)); 410 if (raidPtrs[raidID] == NULL) { 411 printf("WARNING: raidPtrs[%d] is NULL\n", raidID); 412 numraid = raidID; 413 return; 414 } 415 } 416 417 #ifdef RAID_AUTOCONFIG 418 raidautoconfig = 1; 419 #endif 420 421 /* 422 * Register a finalizer which will be used to auto-config RAID 423 * sets once all real hardware devices have been found. 424 */ 425 if (config_finalize_register(NULL, rf_autoconfig) != 0) 426 printf("WARNING: unable to register RAIDframe finalizer\n"); 427 } 428 429 int 430 rf_autoconfig(struct device *self) 431 { 432 RF_AutoConfig_t *ac_list; 433 RF_ConfigSet_t *config_sets; 434 435 if (raidautoconfig == 0) 436 return (0); 437 438 /* XXX This code can only be run once. */ 439 raidautoconfig = 0; 440 441 /* 1. locate all RAID components on the system */ 442 #ifdef DEBUG 443 printf("Searching for RAID components...\n"); 444 #endif 445 ac_list = rf_find_raid_components(); 446 447 /* 2. Sort them into their respective sets. */ 448 config_sets = rf_create_auto_sets(ac_list); 449 450 /* 451 * 3. Evaluate each set andconfigure the valid ones. 452 * This gets done in rf_buildroothack(). 453 */ 454 rf_buildroothack(config_sets); 455 456 return (1); 457 } 458 459 void 460 rf_buildroothack(RF_ConfigSet_t *config_sets) 461 { 462 RF_ConfigSet_t *cset; 463 RF_ConfigSet_t *next_cset; 464 int retcode; 465 int raidID; 466 int rootID; 467 int num_root; 468 469 rootID = 0; 470 num_root = 0; 471 cset = config_sets; 472 while(cset != NULL ) { 473 next_cset = cset->next; 474 if (rf_have_enough_components(cset) && 475 cset->ac->clabel->autoconfigure==1) { 476 retcode = rf_auto_config_set(cset,&raidID); 477 if (!retcode) { 478 if (cset->rootable) { 479 rootID = raidID; 480 num_root++; 481 } 482 } else { 483 /* The autoconfig didn't work :( */ 484 #if DEBUG 485 printf("Autoconfig failed with code %d for raid%d\n", retcode, raidID); 486 #endif 487 rf_release_all_vps(cset); 488 } 489 } else { 490 /* we're not autoconfiguring this set... 491 release the associated resources */ 492 rf_release_all_vps(cset); 493 } 494 /* cleanup */ 495 rf_cleanup_config_set(cset); 496 cset = next_cset; 497 } 498 499 /* we found something bootable... */ 500 501 if (num_root == 1) { 502 booted_device = &raidrootdev[rootID]; 503 } else if (num_root > 1) { 504 /* we can't guess.. require the user to answer... */ 505 boothowto |= RB_ASKNAME; 506 } 507 } 508 509 510 int 511 raidsize(dev_t dev) 512 { 513 struct raid_softc *rs; 514 struct disklabel *lp; 515 int part, unit, omask, size; 516 517 unit = raidunit(dev); 518 if (unit >= numraid) 519 return (-1); 520 rs = &raid_softc[unit]; 521 522 if ((rs->sc_flags & RAIDF_INITED) == 0) 523 return (-1); 524 525 part = DISKPART(dev); 526 omask = rs->sc_dkdev.dk_openmask & (1 << part); 527 lp = rs->sc_dkdev.dk_label; 528 529 if (omask == 0 && raidopen(dev, 0, S_IFBLK, curproc)) 530 return (-1); 531 532 if (lp->d_partitions[part].p_fstype != FS_SWAP) 533 size = -1; 534 else 535 size = lp->d_partitions[part].p_size * 536 (lp->d_secsize / DEV_BSIZE); 537 538 if (omask == 0 && raidclose(dev, 0, S_IFBLK, curproc)) 539 return (-1); 540 541 return (size); 542 543 } 544 545 int 546 raiddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size) 547 { 548 /* Not implemented. */ 549 return ENXIO; 550 } 551 /* ARGSUSED */ 552 int 553 raidopen(dev_t dev, int flags, int fmt, struct proc *p) 554 { 555 int unit = raidunit(dev); 556 struct raid_softc *rs; 557 struct disklabel *lp; 558 int part, pmask; 559 int error = 0; 560 561 if (unit >= numraid) 562 return (ENXIO); 563 rs = &raid_softc[unit]; 564 565 if ((error = raidlock(rs)) != 0) 566 return (error); 567 lp = rs->sc_dkdev.dk_label; 568 569 part = DISKPART(dev); 570 pmask = (1 << part); 571 572 if ((rs->sc_flags & RAIDF_INITED) && 573 (rs->sc_dkdev.dk_openmask == 0)) 574 raidgetdisklabel(dev); 575 576 /* make sure that this partition exists */ 577 578 if (part != RAW_PART) { 579 if (((rs->sc_flags & RAIDF_INITED) == 0) || 580 ((part >= lp->d_npartitions) || 581 (lp->d_partitions[part].p_fstype == FS_UNUSED))) { 582 error = ENXIO; 583 raidunlock(rs); 584 return (error); 585 } 586 } 587 /* Prevent this unit from being unconfigured while open. */ 588 switch (fmt) { 589 case S_IFCHR: 590 rs->sc_dkdev.dk_copenmask |= pmask; 591 break; 592 593 case S_IFBLK: 594 rs->sc_dkdev.dk_bopenmask |= pmask; 595 break; 596 } 597 598 if ((rs->sc_dkdev.dk_openmask == 0) && 599 ((rs->sc_flags & RAIDF_INITED) != 0)) { 600 /* First one... mark things as dirty... Note that we *MUST* 601 have done a configure before this. I DO NOT WANT TO BE 602 SCRIBBLING TO RANDOM COMPONENTS UNTIL IT'S BEEN DETERMINED 603 THAT THEY BELONG TOGETHER!!!!! */ 604 /* XXX should check to see if we're only open for reading 605 here... If so, we needn't do this, but then need some 606 other way of keeping track of what's happened.. */ 607 608 rf_markalldirty( raidPtrs[unit] ); 609 } 610 611 612 rs->sc_dkdev.dk_openmask = 613 rs->sc_dkdev.dk_copenmask | rs->sc_dkdev.dk_bopenmask; 614 615 raidunlock(rs); 616 617 return (error); 618 619 620 } 621 /* ARGSUSED */ 622 int 623 raidclose(dev_t dev, int flags, int fmt, struct proc *p) 624 { 625 int unit = raidunit(dev); 626 struct raid_softc *rs; 627 int error = 0; 628 int part; 629 630 if (unit >= numraid) 631 return (ENXIO); 632 rs = &raid_softc[unit]; 633 634 if ((error = raidlock(rs)) != 0) 635 return (error); 636 637 part = DISKPART(dev); 638 639 /* ...that much closer to allowing unconfiguration... */ 640 switch (fmt) { 641 case S_IFCHR: 642 rs->sc_dkdev.dk_copenmask &= ~(1 << part); 643 break; 644 645 case S_IFBLK: 646 rs->sc_dkdev.dk_bopenmask &= ~(1 << part); 647 break; 648 } 649 rs->sc_dkdev.dk_openmask = 650 rs->sc_dkdev.dk_copenmask | rs->sc_dkdev.dk_bopenmask; 651 652 if ((rs->sc_dkdev.dk_openmask == 0) && 653 ((rs->sc_flags & RAIDF_INITED) != 0)) { 654 /* Last one... device is not unconfigured yet. 655 Device shutdown has taken care of setting the 656 clean bits if RAIDF_INITED is not set 657 mark things as clean... */ 658 659 rf_update_component_labels(raidPtrs[unit], 660 RF_FINAL_COMPONENT_UPDATE); 661 if (doing_shutdown) { 662 /* last one, and we're going down, so 663 lights out for this RAID set too. */ 664 error = rf_Shutdown(raidPtrs[unit]); 665 666 /* It's no longer initialized... */ 667 rs->sc_flags &= ~RAIDF_INITED; 668 669 /* Detach the disk. */ 670 disk_detach(&rs->sc_dkdev); 671 } 672 } 673 674 raidunlock(rs); 675 return (0); 676 677 } 678 679 void 680 raidstrategy(struct buf *bp) 681 { 682 int s; 683 684 unsigned int raidID = raidunit(bp->b_dev); 685 RF_Raid_t *raidPtr; 686 struct raid_softc *rs = &raid_softc[raidID]; 687 int wlabel; 688 689 if ((rs->sc_flags & RAIDF_INITED) ==0) { 690 bp->b_error = ENXIO; 691 bp->b_flags |= B_ERROR; 692 bp->b_resid = bp->b_bcount; 693 biodone(bp); 694 return; 695 } 696 if (raidID >= numraid || !raidPtrs[raidID]) { 697 bp->b_error = ENODEV; 698 bp->b_flags |= B_ERROR; 699 bp->b_resid = bp->b_bcount; 700 biodone(bp); 701 return; 702 } 703 raidPtr = raidPtrs[raidID]; 704 if (!raidPtr->valid) { 705 bp->b_error = ENODEV; 706 bp->b_flags |= B_ERROR; 707 bp->b_resid = bp->b_bcount; 708 biodone(bp); 709 return; 710 } 711 if (bp->b_bcount == 0) { 712 db1_printf(("b_bcount is zero..\n")); 713 biodone(bp); 714 return; 715 } 716 717 /* 718 * Do bounds checking and adjust transfer. If there's an 719 * error, the bounds check will flag that for us. 720 */ 721 722 wlabel = rs->sc_flags & (RAIDF_WLABEL | RAIDF_LABELLING); 723 if (DISKPART(bp->b_dev) != RAW_PART) 724 if (bounds_check_with_label(&rs->sc_dkdev, bp, wlabel) <= 0) { 725 db1_printf(("Bounds check failed!!:%d %d\n", 726 (int) bp->b_blkno, (int) wlabel)); 727 biodone(bp); 728 return; 729 } 730 s = splbio(); 731 732 bp->b_resid = 0; 733 734 /* stuff it onto our queue */ 735 BUFQ_PUT(&rs->buf_queue, bp); 736 737 raidstart(raidPtrs[raidID]); 738 739 splx(s); 740 } 741 /* ARGSUSED */ 742 int 743 raidread(dev_t dev, struct uio *uio, int flags) 744 { 745 int unit = raidunit(dev); 746 struct raid_softc *rs; 747 748 if (unit >= numraid) 749 return (ENXIO); 750 rs = &raid_softc[unit]; 751 752 if ((rs->sc_flags & RAIDF_INITED) == 0) 753 return (ENXIO); 754 755 return (physio(raidstrategy, NULL, dev, B_READ, minphys, uio)); 756 757 } 758 /* ARGSUSED */ 759 int 760 raidwrite(dev_t dev, struct uio *uio, int flags) 761 { 762 int unit = raidunit(dev); 763 struct raid_softc *rs; 764 765 if (unit >= numraid) 766 return (ENXIO); 767 rs = &raid_softc[unit]; 768 769 if ((rs->sc_flags & RAIDF_INITED) == 0) 770 return (ENXIO); 771 772 return (physio(raidstrategy, NULL, dev, B_WRITE, minphys, uio)); 773 774 } 775 776 int 777 raidioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) 778 { 779 int unit = raidunit(dev); 780 int error = 0; 781 int part, pmask; 782 struct raid_softc *rs; 783 RF_Config_t *k_cfg, *u_cfg; 784 RF_Raid_t *raidPtr; 785 RF_RaidDisk_t *diskPtr; 786 RF_AccTotals_t *totals; 787 RF_DeviceConfig_t *d_cfg, **ucfgp; 788 u_char *specific_buf; 789 int retcode = 0; 790 int column; 791 int raidid; 792 struct rf_recon_req *rrcopy, *rr; 793 RF_ComponentLabel_t *clabel; 794 RF_ComponentLabel_t ci_label; 795 RF_ComponentLabel_t **clabel_ptr; 796 RF_SingleComponent_t *sparePtr,*componentPtr; 797 RF_SingleComponent_t hot_spare; 798 RF_SingleComponent_t component; 799 RF_ProgressInfo_t progressInfo, **progressInfoPtr; 800 int i, j, d; 801 #ifdef __HAVE_OLD_DISKLABEL 802 struct disklabel newlabel; 803 #endif 804 805 if (unit >= numraid) 806 return (ENXIO); 807 rs = &raid_softc[unit]; 808 raidPtr = raidPtrs[unit]; 809 810 db1_printf(("raidioctl: %d %d %d %d\n", (int) dev, 811 (int) DISKPART(dev), (int) unit, (int) cmd)); 812 813 /* Must be open for writes for these commands... */ 814 switch (cmd) { 815 case DIOCSDINFO: 816 case DIOCWDINFO: 817 #ifdef __HAVE_OLD_DISKLABEL 818 case ODIOCWDINFO: 819 case ODIOCSDINFO: 820 #endif 821 case DIOCWLABEL: 822 if ((flag & FWRITE) == 0) 823 return (EBADF); 824 } 825 826 /* Must be initialized for these... */ 827 switch (cmd) { 828 case DIOCGDINFO: 829 case DIOCSDINFO: 830 case DIOCWDINFO: 831 #ifdef __HAVE_OLD_DISKLABEL 832 case ODIOCGDINFO: 833 case ODIOCWDINFO: 834 case ODIOCSDINFO: 835 case ODIOCGDEFLABEL: 836 #endif 837 case DIOCGPART: 838 case DIOCWLABEL: 839 case DIOCGDEFLABEL: 840 case RAIDFRAME_SHUTDOWN: 841 case RAIDFRAME_REWRITEPARITY: 842 case RAIDFRAME_GET_INFO: 843 case RAIDFRAME_RESET_ACCTOTALS: 844 case RAIDFRAME_GET_ACCTOTALS: 845 case RAIDFRAME_KEEP_ACCTOTALS: 846 case RAIDFRAME_GET_SIZE: 847 case RAIDFRAME_FAIL_DISK: 848 case RAIDFRAME_COPYBACK: 849 case RAIDFRAME_CHECK_RECON_STATUS: 850 case RAIDFRAME_CHECK_RECON_STATUS_EXT: 851 case RAIDFRAME_GET_COMPONENT_LABEL: 852 case RAIDFRAME_SET_COMPONENT_LABEL: 853 case RAIDFRAME_ADD_HOT_SPARE: 854 case RAIDFRAME_REMOVE_HOT_SPARE: 855 case RAIDFRAME_INIT_LABELS: 856 case RAIDFRAME_REBUILD_IN_PLACE: 857 case RAIDFRAME_CHECK_PARITY: 858 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS: 859 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS_EXT: 860 case RAIDFRAME_CHECK_COPYBACK_STATUS: 861 case RAIDFRAME_CHECK_COPYBACK_STATUS_EXT: 862 case RAIDFRAME_SET_AUTOCONFIG: 863 case RAIDFRAME_SET_ROOT: 864 case RAIDFRAME_DELETE_COMPONENT: 865 case RAIDFRAME_INCORPORATE_HOT_SPARE: 866 if ((rs->sc_flags & RAIDF_INITED) == 0) 867 return (ENXIO); 868 } 869 870 switch (cmd) { 871 872 /* configure the system */ 873 case RAIDFRAME_CONFIGURE: 874 875 if (raidPtr->valid) { 876 /* There is a valid RAID set running on this unit! */ 877 printf("raid%d: Device already configured!\n",unit); 878 return(EINVAL); 879 } 880 881 /* copy-in the configuration information */ 882 /* data points to a pointer to the configuration structure */ 883 884 u_cfg = *((RF_Config_t **) data); 885 RF_Malloc(k_cfg, sizeof(RF_Config_t), (RF_Config_t *)); 886 if (k_cfg == NULL) { 887 return (ENOMEM); 888 } 889 retcode = copyin(u_cfg, k_cfg, sizeof(RF_Config_t)); 890 if (retcode) { 891 RF_Free(k_cfg, sizeof(RF_Config_t)); 892 db1_printf(("rf_ioctl: retcode=%d copyin.1\n", 893 retcode)); 894 return (retcode); 895 } 896 /* allocate a buffer for the layout-specific data, and copy it 897 * in */ 898 if (k_cfg->layoutSpecificSize) { 899 if (k_cfg->layoutSpecificSize > 10000) { 900 /* sanity check */ 901 RF_Free(k_cfg, sizeof(RF_Config_t)); 902 return (EINVAL); 903 } 904 RF_Malloc(specific_buf, k_cfg->layoutSpecificSize, 905 (u_char *)); 906 if (specific_buf == NULL) { 907 RF_Free(k_cfg, sizeof(RF_Config_t)); 908 return (ENOMEM); 909 } 910 retcode = copyin(k_cfg->layoutSpecific, specific_buf, 911 k_cfg->layoutSpecificSize); 912 if (retcode) { 913 RF_Free(k_cfg, sizeof(RF_Config_t)); 914 RF_Free(specific_buf, 915 k_cfg->layoutSpecificSize); 916 db1_printf(("rf_ioctl: retcode=%d copyin.2\n", 917 retcode)); 918 return (retcode); 919 } 920 } else 921 specific_buf = NULL; 922 k_cfg->layoutSpecific = specific_buf; 923 924 /* should do some kind of sanity check on the configuration. 925 * Store the sum of all the bytes in the last byte? */ 926 927 /* configure the system */ 928 929 /* 930 * Clear the entire RAID descriptor, just to make sure 931 * there is no stale data left in the case of a 932 * reconfiguration 933 */ 934 memset((char *) raidPtr, 0, sizeof(RF_Raid_t)); 935 raidPtr->raidid = unit; 936 937 retcode = rf_Configure(raidPtr, k_cfg, NULL); 938 939 if (retcode == 0) { 940 941 /* allow this many simultaneous IO's to 942 this RAID device */ 943 raidPtr->openings = RAIDOUTSTANDING; 944 945 raidinit(raidPtr); 946 rf_markalldirty(raidPtr); 947 } 948 /* free the buffers. No return code here. */ 949 if (k_cfg->layoutSpecificSize) { 950 RF_Free(specific_buf, k_cfg->layoutSpecificSize); 951 } 952 RF_Free(k_cfg, sizeof(RF_Config_t)); 953 954 return (retcode); 955 956 /* shutdown the system */ 957 case RAIDFRAME_SHUTDOWN: 958 959 if ((error = raidlock(rs)) != 0) 960 return (error); 961 962 /* 963 * If somebody has a partition mounted, we shouldn't 964 * shutdown. 965 */ 966 967 part = DISKPART(dev); 968 pmask = (1 << part); 969 if ((rs->sc_dkdev.dk_openmask & ~pmask) || 970 ((rs->sc_dkdev.dk_bopenmask & pmask) && 971 (rs->sc_dkdev.dk_copenmask & pmask))) { 972 raidunlock(rs); 973 return (EBUSY); 974 } 975 976 retcode = rf_Shutdown(raidPtr); 977 978 /* It's no longer initialized... */ 979 rs->sc_flags &= ~RAIDF_INITED; 980 981 /* Detach the disk. */ 982 disk_detach(&rs->sc_dkdev); 983 984 raidunlock(rs); 985 986 return (retcode); 987 case RAIDFRAME_GET_COMPONENT_LABEL: 988 clabel_ptr = (RF_ComponentLabel_t **) data; 989 /* need to read the component label for the disk indicated 990 by row,column in clabel */ 991 992 /* For practice, let's get it directly fromdisk, rather 993 than from the in-core copy */ 994 RF_Malloc( clabel, sizeof( RF_ComponentLabel_t ), 995 (RF_ComponentLabel_t *)); 996 if (clabel == NULL) 997 return (ENOMEM); 998 999 memset((char *) clabel, 0, sizeof(RF_ComponentLabel_t)); 1000 1001 retcode = copyin( *clabel_ptr, clabel, 1002 sizeof(RF_ComponentLabel_t)); 1003 1004 if (retcode) { 1005 RF_Free( clabel, sizeof(RF_ComponentLabel_t)); 1006 return(retcode); 1007 } 1008 1009 clabel->row = 0; /* Don't allow looking at anything else.*/ 1010 1011 column = clabel->column; 1012 1013 if ((column < 0) || (column >= raidPtr->numCol + 1014 raidPtr->numSpare)) { 1015 RF_Free( clabel, sizeof(RF_ComponentLabel_t)); 1016 return(EINVAL); 1017 } 1018 1019 raidread_component_label(raidPtr->Disks[column].dev, 1020 raidPtr->raid_cinfo[column].ci_vp, 1021 clabel ); 1022 1023 retcode = copyout(clabel, *clabel_ptr, 1024 sizeof(RF_ComponentLabel_t)); 1025 RF_Free(clabel, sizeof(RF_ComponentLabel_t)); 1026 return (retcode); 1027 1028 case RAIDFRAME_SET_COMPONENT_LABEL: 1029 clabel = (RF_ComponentLabel_t *) data; 1030 1031 /* XXX check the label for valid stuff... */ 1032 /* Note that some things *should not* get modified -- 1033 the user should be re-initing the labels instead of 1034 trying to patch things. 1035 */ 1036 1037 raidid = raidPtr->raidid; 1038 #if DEBUG 1039 printf("raid%d: Got component label:\n", raidid); 1040 printf("raid%d: Version: %d\n", raidid, clabel->version); 1041 printf("raid%d: Serial Number: %d\n", raidid, clabel->serial_number); 1042 printf("raid%d: Mod counter: %d\n", raidid, clabel->mod_counter); 1043 printf("raid%d: Column: %d\n", raidid, clabel->column); 1044 printf("raid%d: Num Columns: %d\n", raidid, clabel->num_columns); 1045 printf("raid%d: Clean: %d\n", raidid, clabel->clean); 1046 printf("raid%d: Status: %d\n", raidid, clabel->status); 1047 #endif 1048 clabel->row = 0; 1049 column = clabel->column; 1050 1051 if ((column < 0) || (column >= raidPtr->numCol)) { 1052 return(EINVAL); 1053 } 1054 1055 /* XXX this isn't allowed to do anything for now :-) */ 1056 1057 /* XXX and before it is, we need to fill in the rest 1058 of the fields!?!?!?! */ 1059 #if 0 1060 raidwrite_component_label( 1061 raidPtr->Disks[column].dev, 1062 raidPtr->raid_cinfo[column].ci_vp, 1063 clabel ); 1064 #endif 1065 return (0); 1066 1067 case RAIDFRAME_INIT_LABELS: 1068 clabel = (RF_ComponentLabel_t *) data; 1069 /* 1070 we only want the serial number from 1071 the above. We get all the rest of the information 1072 from the config that was used to create this RAID 1073 set. 1074 */ 1075 1076 raidPtr->serial_number = clabel->serial_number; 1077 1078 raid_init_component_label(raidPtr, &ci_label); 1079 ci_label.serial_number = clabel->serial_number; 1080 ci_label.row = 0; /* we dont' pretend to support more */ 1081 1082 for(column=0;column<raidPtr->numCol;column++) { 1083 diskPtr = &raidPtr->Disks[column]; 1084 if (!RF_DEAD_DISK(diskPtr->status)) { 1085 ci_label.partitionSize = diskPtr->partitionSize; 1086 ci_label.column = column; 1087 raidwrite_component_label( 1088 raidPtr->Disks[column].dev, 1089 raidPtr->raid_cinfo[column].ci_vp, 1090 &ci_label ); 1091 } 1092 } 1093 1094 return (retcode); 1095 case RAIDFRAME_SET_AUTOCONFIG: 1096 d = rf_set_autoconfig(raidPtr, *(int *) data); 1097 printf("raid%d: New autoconfig value is: %d\n", 1098 raidPtr->raidid, d); 1099 *(int *) data = d; 1100 return (retcode); 1101 1102 case RAIDFRAME_SET_ROOT: 1103 d = rf_set_rootpartition(raidPtr, *(int *) data); 1104 printf("raid%d: New rootpartition value is: %d\n", 1105 raidPtr->raidid, d); 1106 *(int *) data = d; 1107 return (retcode); 1108 1109 /* initialize all parity */ 1110 case RAIDFRAME_REWRITEPARITY: 1111 1112 if (raidPtr->Layout.map->faultsTolerated == 0) { 1113 /* Parity for RAID 0 is trivially correct */ 1114 raidPtr->parity_good = RF_RAID_CLEAN; 1115 return(0); 1116 } 1117 1118 if (raidPtr->parity_rewrite_in_progress == 1) { 1119 /* Re-write is already in progress! */ 1120 return(EINVAL); 1121 } 1122 1123 retcode = RF_CREATE_THREAD(raidPtr->parity_rewrite_thread, 1124 rf_RewriteParityThread, 1125 raidPtr,"raid_parity"); 1126 return (retcode); 1127 1128 1129 case RAIDFRAME_ADD_HOT_SPARE: 1130 sparePtr = (RF_SingleComponent_t *) data; 1131 memcpy( &hot_spare, sparePtr, sizeof(RF_SingleComponent_t)); 1132 retcode = rf_add_hot_spare(raidPtr, &hot_spare); 1133 return(retcode); 1134 1135 case RAIDFRAME_REMOVE_HOT_SPARE: 1136 return(retcode); 1137 1138 case RAIDFRAME_DELETE_COMPONENT: 1139 componentPtr = (RF_SingleComponent_t *)data; 1140 memcpy( &component, componentPtr, 1141 sizeof(RF_SingleComponent_t)); 1142 retcode = rf_delete_component(raidPtr, &component); 1143 return(retcode); 1144 1145 case RAIDFRAME_INCORPORATE_HOT_SPARE: 1146 componentPtr = (RF_SingleComponent_t *)data; 1147 memcpy( &component, componentPtr, 1148 sizeof(RF_SingleComponent_t)); 1149 retcode = rf_incorporate_hot_spare(raidPtr, &component); 1150 return(retcode); 1151 1152 case RAIDFRAME_REBUILD_IN_PLACE: 1153 1154 if (raidPtr->Layout.map->faultsTolerated == 0) { 1155 /* Can't do this on a RAID 0!! */ 1156 return(EINVAL); 1157 } 1158 1159 if (raidPtr->recon_in_progress == 1) { 1160 /* a reconstruct is already in progress! */ 1161 return(EINVAL); 1162 } 1163 1164 componentPtr = (RF_SingleComponent_t *) data; 1165 memcpy( &component, componentPtr, 1166 sizeof(RF_SingleComponent_t)); 1167 component.row = 0; /* we don't support any more */ 1168 column = component.column; 1169 1170 if ((column < 0) || (column >= raidPtr->numCol)) { 1171 return(EINVAL); 1172 } 1173 1174 RF_LOCK_MUTEX(raidPtr->mutex); 1175 if ((raidPtr->Disks[column].status == rf_ds_optimal) && 1176 (raidPtr->numFailures > 0)) { 1177 /* XXX 0 above shouldn't be constant!!! */ 1178 /* some component other than this has failed. 1179 Let's not make things worse than they already 1180 are... */ 1181 printf("raid%d: Unable to reconstruct to disk at:\n", 1182 raidPtr->raidid); 1183 printf("raid%d: Col: %d Too many failures.\n", 1184 raidPtr->raidid, column); 1185 RF_UNLOCK_MUTEX(raidPtr->mutex); 1186 return (EINVAL); 1187 } 1188 if (raidPtr->Disks[column].status == 1189 rf_ds_reconstructing) { 1190 printf("raid%d: Unable to reconstruct to disk at:\n", 1191 raidPtr->raidid); 1192 printf("raid%d: Col: %d Reconstruction already occuring!\n", raidPtr->raidid, column); 1193 1194 RF_UNLOCK_MUTEX(raidPtr->mutex); 1195 return (EINVAL); 1196 } 1197 if (raidPtr->Disks[column].status == rf_ds_spared) { 1198 RF_UNLOCK_MUTEX(raidPtr->mutex); 1199 return (EINVAL); 1200 } 1201 RF_UNLOCK_MUTEX(raidPtr->mutex); 1202 1203 RF_Malloc(rrcopy, sizeof(*rrcopy), (struct rf_recon_req *)); 1204 if (rrcopy == NULL) 1205 return(ENOMEM); 1206 1207 rrcopy->raidPtr = (void *) raidPtr; 1208 rrcopy->col = column; 1209 1210 retcode = RF_CREATE_THREAD(raidPtr->recon_thread, 1211 rf_ReconstructInPlaceThread, 1212 rrcopy,"raid_reconip"); 1213 return(retcode); 1214 1215 case RAIDFRAME_GET_INFO: 1216 if (!raidPtr->valid) 1217 return (ENODEV); 1218 ucfgp = (RF_DeviceConfig_t **) data; 1219 RF_Malloc(d_cfg, sizeof(RF_DeviceConfig_t), 1220 (RF_DeviceConfig_t *)); 1221 if (d_cfg == NULL) 1222 return (ENOMEM); 1223 memset((char *) d_cfg, 0, sizeof(RF_DeviceConfig_t)); 1224 d_cfg->rows = 1; /* there is only 1 row now */ 1225 d_cfg->cols = raidPtr->numCol; 1226 d_cfg->ndevs = raidPtr->numCol; 1227 if (d_cfg->ndevs >= RF_MAX_DISKS) { 1228 RF_Free(d_cfg, sizeof(RF_DeviceConfig_t)); 1229 return (ENOMEM); 1230 } 1231 d_cfg->nspares = raidPtr->numSpare; 1232 if (d_cfg->nspares >= RF_MAX_DISKS) { 1233 RF_Free(d_cfg, sizeof(RF_DeviceConfig_t)); 1234 return (ENOMEM); 1235 } 1236 d_cfg->maxqdepth = raidPtr->maxQueueDepth; 1237 d = 0; 1238 for (j = 0; j < d_cfg->cols; j++) { 1239 d_cfg->devs[d] = raidPtr->Disks[j]; 1240 d++; 1241 } 1242 for (j = d_cfg->cols, i = 0; i < d_cfg->nspares; i++, j++) { 1243 d_cfg->spares[i] = raidPtr->Disks[j]; 1244 } 1245 retcode = copyout(d_cfg, *ucfgp, sizeof(RF_DeviceConfig_t)); 1246 RF_Free(d_cfg, sizeof(RF_DeviceConfig_t)); 1247 1248 return (retcode); 1249 1250 case RAIDFRAME_CHECK_PARITY: 1251 *(int *) data = raidPtr->parity_good; 1252 return (0); 1253 1254 case RAIDFRAME_RESET_ACCTOTALS: 1255 memset(&raidPtr->acc_totals, 0, sizeof(raidPtr->acc_totals)); 1256 return (0); 1257 1258 case RAIDFRAME_GET_ACCTOTALS: 1259 totals = (RF_AccTotals_t *) data; 1260 *totals = raidPtr->acc_totals; 1261 return (0); 1262 1263 case RAIDFRAME_KEEP_ACCTOTALS: 1264 raidPtr->keep_acc_totals = *(int *)data; 1265 return (0); 1266 1267 case RAIDFRAME_GET_SIZE: 1268 *(int *) data = raidPtr->totalSectors; 1269 return (0); 1270 1271 /* fail a disk & optionally start reconstruction */ 1272 case RAIDFRAME_FAIL_DISK: 1273 1274 if (raidPtr->Layout.map->faultsTolerated == 0) { 1275 /* Can't do this on a RAID 0!! */ 1276 return(EINVAL); 1277 } 1278 1279 rr = (struct rf_recon_req *) data; 1280 rr->row = 0; 1281 if (rr->col < 0 || rr->col >= raidPtr->numCol) 1282 return (EINVAL); 1283 1284 1285 RF_LOCK_MUTEX(raidPtr->mutex); 1286 if ((raidPtr->Disks[rr->col].status == 1287 rf_ds_optimal) && (raidPtr->numFailures > 0)) { 1288 /* some other component has failed. Let's not make 1289 things worse. XXX wrong for RAID6 */ 1290 RF_UNLOCK_MUTEX(raidPtr->mutex); 1291 return (EINVAL); 1292 } 1293 if (raidPtr->Disks[rr->col].status == rf_ds_spared) { 1294 /* Can't fail a spared disk! */ 1295 RF_UNLOCK_MUTEX(raidPtr->mutex); 1296 return (EINVAL); 1297 } 1298 RF_UNLOCK_MUTEX(raidPtr->mutex); 1299 1300 /* make a copy of the recon request so that we don't rely on 1301 * the user's buffer */ 1302 RF_Malloc(rrcopy, sizeof(*rrcopy), (struct rf_recon_req *)); 1303 if (rrcopy == NULL) 1304 return(ENOMEM); 1305 memcpy(rrcopy, rr, sizeof(*rr)); 1306 rrcopy->raidPtr = (void *) raidPtr; 1307 1308 retcode = RF_CREATE_THREAD(raidPtr->recon_thread, 1309 rf_ReconThread, 1310 rrcopy,"raid_recon"); 1311 return (0); 1312 1313 /* invoke a copyback operation after recon on whatever disk 1314 * needs it, if any */ 1315 case RAIDFRAME_COPYBACK: 1316 1317 if (raidPtr->Layout.map->faultsTolerated == 0) { 1318 /* This makes no sense on a RAID 0!! */ 1319 return(EINVAL); 1320 } 1321 1322 if (raidPtr->copyback_in_progress == 1) { 1323 /* Copyback is already in progress! */ 1324 return(EINVAL); 1325 } 1326 1327 retcode = RF_CREATE_THREAD(raidPtr->copyback_thread, 1328 rf_CopybackThread, 1329 raidPtr,"raid_copyback"); 1330 return (retcode); 1331 1332 /* return the percentage completion of reconstruction */ 1333 case RAIDFRAME_CHECK_RECON_STATUS: 1334 if (raidPtr->Layout.map->faultsTolerated == 0) { 1335 /* This makes no sense on a RAID 0, so tell the 1336 user it's done. */ 1337 *(int *) data = 100; 1338 return(0); 1339 } 1340 if (raidPtr->status != rf_rs_reconstructing) 1341 *(int *) data = 100; 1342 else { 1343 if (raidPtr->reconControl->numRUsTotal > 0) { 1344 *(int *) data = (raidPtr->reconControl->numRUsComplete * 100 / raidPtr->reconControl->numRUsTotal); 1345 } else { 1346 *(int *) data = 0; 1347 } 1348 } 1349 return (0); 1350 case RAIDFRAME_CHECK_RECON_STATUS_EXT: 1351 progressInfoPtr = (RF_ProgressInfo_t **) data; 1352 if (raidPtr->status != rf_rs_reconstructing) { 1353 progressInfo.remaining = 0; 1354 progressInfo.completed = 100; 1355 progressInfo.total = 100; 1356 } else { 1357 progressInfo.total = 1358 raidPtr->reconControl->numRUsTotal; 1359 progressInfo.completed = 1360 raidPtr->reconControl->numRUsComplete; 1361 progressInfo.remaining = progressInfo.total - 1362 progressInfo.completed; 1363 } 1364 retcode = copyout(&progressInfo, *progressInfoPtr, 1365 sizeof(RF_ProgressInfo_t)); 1366 return (retcode); 1367 1368 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS: 1369 if (raidPtr->Layout.map->faultsTolerated == 0) { 1370 /* This makes no sense on a RAID 0, so tell the 1371 user it's done. */ 1372 *(int *) data = 100; 1373 return(0); 1374 } 1375 if (raidPtr->parity_rewrite_in_progress == 1) { 1376 *(int *) data = 100 * 1377 raidPtr->parity_rewrite_stripes_done / 1378 raidPtr->Layout.numStripe; 1379 } else { 1380 *(int *) data = 100; 1381 } 1382 return (0); 1383 1384 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS_EXT: 1385 progressInfoPtr = (RF_ProgressInfo_t **) data; 1386 if (raidPtr->parity_rewrite_in_progress == 1) { 1387 progressInfo.total = raidPtr->Layout.numStripe; 1388 progressInfo.completed = 1389 raidPtr->parity_rewrite_stripes_done; 1390 progressInfo.remaining = progressInfo.total - 1391 progressInfo.completed; 1392 } else { 1393 progressInfo.remaining = 0; 1394 progressInfo.completed = 100; 1395 progressInfo.total = 100; 1396 } 1397 retcode = copyout(&progressInfo, *progressInfoPtr, 1398 sizeof(RF_ProgressInfo_t)); 1399 return (retcode); 1400 1401 case RAIDFRAME_CHECK_COPYBACK_STATUS: 1402 if (raidPtr->Layout.map->faultsTolerated == 0) { 1403 /* This makes no sense on a RAID 0 */ 1404 *(int *) data = 100; 1405 return(0); 1406 } 1407 if (raidPtr->copyback_in_progress == 1) { 1408 *(int *) data = 100 * raidPtr->copyback_stripes_done / 1409 raidPtr->Layout.numStripe; 1410 } else { 1411 *(int *) data = 100; 1412 } 1413 return (0); 1414 1415 case RAIDFRAME_CHECK_COPYBACK_STATUS_EXT: 1416 progressInfoPtr = (RF_ProgressInfo_t **) data; 1417 if (raidPtr->copyback_in_progress == 1) { 1418 progressInfo.total = raidPtr->Layout.numStripe; 1419 progressInfo.completed = 1420 raidPtr->copyback_stripes_done; 1421 progressInfo.remaining = progressInfo.total - 1422 progressInfo.completed; 1423 } else { 1424 progressInfo.remaining = 0; 1425 progressInfo.completed = 100; 1426 progressInfo.total = 100; 1427 } 1428 retcode = copyout(&progressInfo, *progressInfoPtr, 1429 sizeof(RF_ProgressInfo_t)); 1430 return (retcode); 1431 1432 /* the sparetable daemon calls this to wait for the kernel to 1433 * need a spare table. this ioctl does not return until a 1434 * spare table is needed. XXX -- calling mpsleep here in the 1435 * ioctl code is almost certainly wrong and evil. -- XXX XXX 1436 * -- I should either compute the spare table in the kernel, 1437 * or have a different -- XXX XXX -- interface (a different 1438 * character device) for delivering the table -- XXX */ 1439 #if 0 1440 case RAIDFRAME_SPARET_WAIT: 1441 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1442 while (!rf_sparet_wait_queue) 1443 mpsleep(&rf_sparet_wait_queue, (PZERO + 1) | PCATCH, "sparet wait", 0, (void *) simple_lock_addr(rf_sparet_wait_mutex), MS_LOCK_SIMPLE); 1444 waitreq = rf_sparet_wait_queue; 1445 rf_sparet_wait_queue = rf_sparet_wait_queue->next; 1446 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1447 1448 /* structure assignment */ 1449 *((RF_SparetWait_t *) data) = *waitreq; 1450 1451 RF_Free(waitreq, sizeof(*waitreq)); 1452 return (0); 1453 1454 /* wakes up a process waiting on SPARET_WAIT and puts an error 1455 * code in it that will cause the dameon to exit */ 1456 case RAIDFRAME_ABORT_SPARET_WAIT: 1457 RF_Malloc(waitreq, sizeof(*waitreq), (RF_SparetWait_t *)); 1458 waitreq->fcol = -1; 1459 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1460 waitreq->next = rf_sparet_wait_queue; 1461 rf_sparet_wait_queue = waitreq; 1462 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1463 wakeup(&rf_sparet_wait_queue); 1464 return (0); 1465 1466 /* used by the spare table daemon to deliver a spare table 1467 * into the kernel */ 1468 case RAIDFRAME_SEND_SPARET: 1469 1470 /* install the spare table */ 1471 retcode = rf_SetSpareTable(raidPtr, *(void **) data); 1472 1473 /* respond to the requestor. the return status of the spare 1474 * table installation is passed in the "fcol" field */ 1475 RF_Malloc(waitreq, sizeof(*waitreq), (RF_SparetWait_t *)); 1476 waitreq->fcol = retcode; 1477 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1478 waitreq->next = rf_sparet_resp_queue; 1479 rf_sparet_resp_queue = waitreq; 1480 wakeup(&rf_sparet_resp_queue); 1481 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1482 1483 return (retcode); 1484 #endif 1485 1486 default: 1487 break; /* fall through to the os-specific code below */ 1488 1489 } 1490 1491 if (!raidPtr->valid) 1492 return (EINVAL); 1493 1494 /* 1495 * Add support for "regular" device ioctls here. 1496 */ 1497 1498 switch (cmd) { 1499 case DIOCGDINFO: 1500 *(struct disklabel *) data = *(rs->sc_dkdev.dk_label); 1501 break; 1502 #ifdef __HAVE_OLD_DISKLABEL 1503 case ODIOCGDINFO: 1504 newlabel = *(rs->sc_dkdev.dk_label); 1505 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1506 return ENOTTY; 1507 memcpy(data, &newlabel, sizeof (struct olddisklabel)); 1508 break; 1509 #endif 1510 1511 case DIOCGPART: 1512 ((struct partinfo *) data)->disklab = rs->sc_dkdev.dk_label; 1513 ((struct partinfo *) data)->part = 1514 &rs->sc_dkdev.dk_label->d_partitions[DISKPART(dev)]; 1515 break; 1516 1517 case DIOCWDINFO: 1518 case DIOCSDINFO: 1519 #ifdef __HAVE_OLD_DISKLABEL 1520 case ODIOCWDINFO: 1521 case ODIOCSDINFO: 1522 #endif 1523 { 1524 struct disklabel *lp; 1525 #ifdef __HAVE_OLD_DISKLABEL 1526 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1527 memset(&newlabel, 0, sizeof newlabel); 1528 memcpy(&newlabel, data, sizeof (struct olddisklabel)); 1529 lp = &newlabel; 1530 } else 1531 #endif 1532 lp = (struct disklabel *)data; 1533 1534 if ((error = raidlock(rs)) != 0) 1535 return (error); 1536 1537 rs->sc_flags |= RAIDF_LABELLING; 1538 1539 error = setdisklabel(rs->sc_dkdev.dk_label, 1540 lp, 0, rs->sc_dkdev.dk_cpulabel); 1541 if (error == 0) { 1542 if (cmd == DIOCWDINFO 1543 #ifdef __HAVE_OLD_DISKLABEL 1544 || cmd == ODIOCWDINFO 1545 #endif 1546 ) 1547 error = writedisklabel(RAIDLABELDEV(dev), 1548 raidstrategy, rs->sc_dkdev.dk_label, 1549 rs->sc_dkdev.dk_cpulabel); 1550 } 1551 rs->sc_flags &= ~RAIDF_LABELLING; 1552 1553 raidunlock(rs); 1554 1555 if (error) 1556 return (error); 1557 break; 1558 } 1559 1560 case DIOCWLABEL: 1561 if (*(int *) data != 0) 1562 rs->sc_flags |= RAIDF_WLABEL; 1563 else 1564 rs->sc_flags &= ~RAIDF_WLABEL; 1565 break; 1566 1567 case DIOCGDEFLABEL: 1568 raidgetdefaultlabel(raidPtr, rs, (struct disklabel *) data); 1569 break; 1570 1571 #ifdef __HAVE_OLD_DISKLABEL 1572 case ODIOCGDEFLABEL: 1573 raidgetdefaultlabel(raidPtr, rs, &newlabel); 1574 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1575 return ENOTTY; 1576 memcpy(data, &newlabel, sizeof (struct olddisklabel)); 1577 break; 1578 #endif 1579 1580 default: 1581 retcode = ENOTTY; 1582 } 1583 return (retcode); 1584 1585 } 1586 1587 1588 /* raidinit -- complete the rest of the initialization for the 1589 RAIDframe device. */ 1590 1591 1592 static void 1593 raidinit(RF_Raid_t *raidPtr) 1594 { 1595 struct raid_softc *rs; 1596 int unit; 1597 1598 unit = raidPtr->raidid; 1599 1600 rs = &raid_softc[unit]; 1601 1602 /* XXX should check return code first... */ 1603 rs->sc_flags |= RAIDF_INITED; 1604 1605 sprintf(rs->sc_xname, "raid%d", unit); /* XXX doesn't check bounds. */ 1606 1607 rs->sc_dkdev.dk_name = rs->sc_xname; 1608 1609 /* disk_attach actually creates space for the CPU disklabel, among 1610 * other things, so it's critical to call this *BEFORE* we try putzing 1611 * with disklabels. */ 1612 1613 disk_attach(&rs->sc_dkdev); 1614 1615 /* XXX There may be a weird interaction here between this, and 1616 * protectedSectors, as used in RAIDframe. */ 1617 1618 rs->sc_size = raidPtr->totalSectors; 1619 } 1620 #if (RF_INCLUDE_PARITY_DECLUSTERING_DS > 0) 1621 /* wake up the daemon & tell it to get us a spare table 1622 * XXX 1623 * the entries in the queues should be tagged with the raidPtr 1624 * so that in the extremely rare case that two recons happen at once, 1625 * we know for which device were requesting a spare table 1626 * XXX 1627 * 1628 * XXX This code is not currently used. GO 1629 */ 1630 int 1631 rf_GetSpareTableFromDaemon(RF_SparetWait_t *req) 1632 { 1633 int retcode; 1634 1635 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1636 req->next = rf_sparet_wait_queue; 1637 rf_sparet_wait_queue = req; 1638 wakeup(&rf_sparet_wait_queue); 1639 1640 /* mpsleep unlocks the mutex */ 1641 while (!rf_sparet_resp_queue) { 1642 tsleep(&rf_sparet_resp_queue, PRIBIO, 1643 "raidframe getsparetable", 0); 1644 } 1645 req = rf_sparet_resp_queue; 1646 rf_sparet_resp_queue = req->next; 1647 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1648 1649 retcode = req->fcol; 1650 RF_Free(req, sizeof(*req)); /* this is not the same req as we 1651 * alloc'd */ 1652 return (retcode); 1653 } 1654 #endif 1655 1656 /* a wrapper around rf_DoAccess that extracts appropriate info from the 1657 * bp & passes it down. 1658 * any calls originating in the kernel must use non-blocking I/O 1659 * do some extra sanity checking to return "appropriate" error values for 1660 * certain conditions (to make some standard utilities work) 1661 * 1662 * Formerly known as: rf_DoAccessKernel 1663 */ 1664 void 1665 raidstart(RF_Raid_t *raidPtr) 1666 { 1667 RF_SectorCount_t num_blocks, pb, sum; 1668 RF_RaidAddr_t raid_addr; 1669 struct partition *pp; 1670 daddr_t blocknum; 1671 int unit; 1672 struct raid_softc *rs; 1673 int do_async; 1674 struct buf *bp; 1675 int rc; 1676 1677 unit = raidPtr->raidid; 1678 rs = &raid_softc[unit]; 1679 1680 /* quick check to see if anything has died recently */ 1681 RF_LOCK_MUTEX(raidPtr->mutex); 1682 if (raidPtr->numNewFailures > 0) { 1683 RF_UNLOCK_MUTEX(raidPtr->mutex); 1684 rf_update_component_labels(raidPtr, 1685 RF_NORMAL_COMPONENT_UPDATE); 1686 RF_LOCK_MUTEX(raidPtr->mutex); 1687 raidPtr->numNewFailures--; 1688 } 1689 1690 /* Check to see if we're at the limit... */ 1691 while (raidPtr->openings > 0) { 1692 RF_UNLOCK_MUTEX(raidPtr->mutex); 1693 1694 /* get the next item, if any, from the queue */ 1695 if ((bp = BUFQ_GET(&rs->buf_queue)) == NULL) { 1696 /* nothing more to do */ 1697 return; 1698 } 1699 1700 /* Ok, for the bp we have here, bp->b_blkno is relative to the 1701 * partition.. Need to make it absolute to the underlying 1702 * device.. */ 1703 1704 blocknum = bp->b_blkno; 1705 if (DISKPART(bp->b_dev) != RAW_PART) { 1706 pp = &rs->sc_dkdev.dk_label->d_partitions[DISKPART(bp->b_dev)]; 1707 blocknum += pp->p_offset; 1708 } 1709 1710 db1_printf(("Blocks: %d, %d\n", (int) bp->b_blkno, 1711 (int) blocknum)); 1712 1713 db1_printf(("bp->b_bcount = %d\n", (int) bp->b_bcount)); 1714 db1_printf(("bp->b_resid = %d\n", (int) bp->b_resid)); 1715 1716 /* *THIS* is where we adjust what block we're going to... 1717 * but DO NOT TOUCH bp->b_blkno!!! */ 1718 raid_addr = blocknum; 1719 1720 num_blocks = bp->b_bcount >> raidPtr->logBytesPerSector; 1721 pb = (bp->b_bcount & raidPtr->sectorMask) ? 1 : 0; 1722 sum = raid_addr + num_blocks + pb; 1723 if (1 || rf_debugKernelAccess) { 1724 db1_printf(("raid_addr=%d sum=%d num_blocks=%d(+%d) (%d)\n", 1725 (int) raid_addr, (int) sum, (int) num_blocks, 1726 (int) pb, (int) bp->b_resid)); 1727 } 1728 if ((sum > raidPtr->totalSectors) || (sum < raid_addr) 1729 || (sum < num_blocks) || (sum < pb)) { 1730 bp->b_error = ENOSPC; 1731 bp->b_flags |= B_ERROR; 1732 bp->b_resid = bp->b_bcount; 1733 biodone(bp); 1734 RF_LOCK_MUTEX(raidPtr->mutex); 1735 continue; 1736 } 1737 /* 1738 * XXX rf_DoAccess() should do this, not just DoAccessKernel() 1739 */ 1740 1741 if (bp->b_bcount & raidPtr->sectorMask) { 1742 bp->b_error = EINVAL; 1743 bp->b_flags |= B_ERROR; 1744 bp->b_resid = bp->b_bcount; 1745 biodone(bp); 1746 RF_LOCK_MUTEX(raidPtr->mutex); 1747 continue; 1748 1749 } 1750 db1_printf(("Calling DoAccess..\n")); 1751 1752 1753 RF_LOCK_MUTEX(raidPtr->mutex); 1754 raidPtr->openings--; 1755 RF_UNLOCK_MUTEX(raidPtr->mutex); 1756 1757 /* 1758 * Everything is async. 1759 */ 1760 do_async = 1; 1761 1762 disk_busy(&rs->sc_dkdev); 1763 1764 /* XXX we're still at splbio() here... do we *really* 1765 need to be? */ 1766 1767 /* don't ever condition on bp->b_flags & B_WRITE. 1768 * always condition on B_READ instead */ 1769 1770 rc = rf_DoAccess(raidPtr, (bp->b_flags & B_READ) ? 1771 RF_IO_TYPE_READ : RF_IO_TYPE_WRITE, 1772 do_async, raid_addr, num_blocks, 1773 bp->b_data, bp, RF_DAG_NONBLOCKING_IO); 1774 1775 if (rc) { 1776 bp->b_error = rc; 1777 bp->b_flags |= B_ERROR; 1778 bp->b_resid = bp->b_bcount; 1779 biodone(bp); 1780 /* continue loop */ 1781 } 1782 1783 RF_LOCK_MUTEX(raidPtr->mutex); 1784 } 1785 RF_UNLOCK_MUTEX(raidPtr->mutex); 1786 } 1787 1788 1789 1790 1791 /* invoke an I/O from kernel mode. Disk queue should be locked upon entry */ 1792 1793 int 1794 rf_DispatchKernelIO(RF_DiskQueue_t *queue, RF_DiskQueueData_t *req) 1795 { 1796 int op = (req->type == RF_IO_TYPE_READ) ? B_READ : B_WRITE; 1797 struct buf *bp; 1798 struct raidbuf *raidbp = NULL; 1799 1800 req->queue = queue; 1801 1802 #if DIAGNOSTIC 1803 if (queue->raidPtr->raidid >= numraid) { 1804 printf("Invalid unit number: %d %d\n", queue->raidPtr->raidid, 1805 numraid); 1806 panic("Invalid Unit number in rf_DispatchKernelIO"); 1807 } 1808 #endif 1809 1810 bp = req->bp; 1811 #if 1 1812 /* XXX when there is a physical disk failure, someone is passing us a 1813 * buffer that contains old stuff!! Attempt to deal with this problem 1814 * without taking a performance hit... (not sure where the real bug 1815 * is. It's buried in RAIDframe somewhere) :-( GO ) */ 1816 1817 if (bp->b_flags & B_ERROR) { 1818 bp->b_flags &= ~B_ERROR; 1819 } 1820 if (bp->b_error != 0) { 1821 bp->b_error = 0; 1822 } 1823 #endif 1824 raidbp = pool_get(&rf_pools.cbuf, PR_NOWAIT); 1825 if (raidbp == NULL) { 1826 bp->b_flags |= B_ERROR; 1827 bp->b_error = ENOMEM; 1828 return (ENOMEM); 1829 } 1830 BUF_INIT(&raidbp->rf_buf); 1831 1832 /* 1833 * context for raidiodone 1834 */ 1835 raidbp->rf_obp = bp; 1836 raidbp->req = req; 1837 1838 BIO_COPYPRIO(&raidbp->rf_buf, bp); 1839 1840 switch (req->type) { 1841 case RF_IO_TYPE_NOP: /* used primarily to unlock a locked queue */ 1842 /* XXX need to do something extra here.. */ 1843 /* I'm leaving this in, as I've never actually seen it used, 1844 * and I'd like folks to report it... GO */ 1845 printf(("WAKEUP CALLED\n")); 1846 queue->numOutstanding++; 1847 1848 /* XXX need to glue the original buffer into this?? */ 1849 1850 KernelWakeupFunc(&raidbp->rf_buf); 1851 break; 1852 1853 case RF_IO_TYPE_READ: 1854 case RF_IO_TYPE_WRITE: 1855 #if RF_ACC_TRACE > 0 1856 if (req->tracerec) { 1857 RF_ETIMER_START(req->tracerec->timer); 1858 } 1859 #endif 1860 InitBP(&raidbp->rf_buf, queue->rf_cinfo->ci_vp, 1861 op | bp->b_flags, queue->rf_cinfo->ci_dev, 1862 req->sectorOffset, req->numSector, 1863 req->buf, KernelWakeupFunc, (void *) req, 1864 queue->raidPtr->logBytesPerSector, req->b_proc); 1865 1866 if (rf_debugKernelAccess) { 1867 db1_printf(("dispatch: bp->b_blkno = %ld\n", 1868 (long) bp->b_blkno)); 1869 } 1870 queue->numOutstanding++; 1871 queue->last_deq_sector = req->sectorOffset; 1872 /* acc wouldn't have been let in if there were any pending 1873 * reqs at any other priority */ 1874 queue->curPriority = req->priority; 1875 1876 db1_printf(("Going for %c to unit %d col %d\n", 1877 req->type, queue->raidPtr->raidid, 1878 queue->col)); 1879 db1_printf(("sector %d count %d (%d bytes) %d\n", 1880 (int) req->sectorOffset, (int) req->numSector, 1881 (int) (req->numSector << 1882 queue->raidPtr->logBytesPerSector), 1883 (int) queue->raidPtr->logBytesPerSector)); 1884 if ((raidbp->rf_buf.b_flags & B_READ) == 0) { 1885 raidbp->rf_buf.b_vp->v_numoutput++; 1886 } 1887 VOP_STRATEGY(raidbp->rf_buf.b_vp, &raidbp->rf_buf); 1888 1889 break; 1890 1891 default: 1892 panic("bad req->type in rf_DispatchKernelIO"); 1893 } 1894 db1_printf(("Exiting from DispatchKernelIO\n")); 1895 1896 return (0); 1897 } 1898 /* this is the callback function associated with a I/O invoked from 1899 kernel code. 1900 */ 1901 static void 1902 KernelWakeupFunc(struct buf *vbp) 1903 { 1904 RF_DiskQueueData_t *req = NULL; 1905 RF_DiskQueue_t *queue; 1906 struct raidbuf *raidbp = (struct raidbuf *) vbp; 1907 struct buf *bp; 1908 int s; 1909 1910 s = splbio(); 1911 db1_printf(("recovering the request queue:\n")); 1912 req = raidbp->req; 1913 1914 bp = raidbp->rf_obp; 1915 1916 queue = (RF_DiskQueue_t *) req->queue; 1917 1918 if (raidbp->rf_buf.b_flags & B_ERROR) { 1919 bp->b_flags |= B_ERROR; 1920 bp->b_error = raidbp->rf_buf.b_error ? 1921 raidbp->rf_buf.b_error : EIO; 1922 } 1923 1924 /* XXX methinks this could be wrong... */ 1925 #if 1 1926 bp->b_resid = raidbp->rf_buf.b_resid; 1927 #endif 1928 #if RF_ACC_TRACE > 0 1929 if (req->tracerec) { 1930 RF_ETIMER_STOP(req->tracerec->timer); 1931 RF_ETIMER_EVAL(req->tracerec->timer); 1932 RF_LOCK_MUTEX(rf_tracing_mutex); 1933 req->tracerec->diskwait_us += RF_ETIMER_VAL_US(req->tracerec->timer); 1934 req->tracerec->phys_io_us += RF_ETIMER_VAL_US(req->tracerec->timer); 1935 req->tracerec->num_phys_ios++; 1936 RF_UNLOCK_MUTEX(rf_tracing_mutex); 1937 } 1938 #endif 1939 bp->b_bcount = raidbp->rf_buf.b_bcount; /* XXXX ?? */ 1940 1941 /* XXX Ok, let's get aggressive... If B_ERROR is set, let's go 1942 * ballistic, and mark the component as hosed... */ 1943 1944 if (bp->b_flags & B_ERROR) { 1945 /* Mark the disk as dead */ 1946 /* but only mark it once... */ 1947 if (queue->raidPtr->Disks[queue->col].status == 1948 rf_ds_optimal) { 1949 printf("raid%d: IO Error. Marking %s as failed.\n", 1950 queue->raidPtr->raidid, 1951 queue->raidPtr->Disks[queue->col].devname); 1952 queue->raidPtr->Disks[queue->col].status = 1953 rf_ds_failed; 1954 queue->raidPtr->status = rf_rs_degraded; 1955 queue->raidPtr->numFailures++; 1956 queue->raidPtr->numNewFailures++; 1957 } else { /* Disk is already dead... */ 1958 /* printf("Disk already marked as dead!\n"); */ 1959 } 1960 1961 } 1962 1963 pool_put(&rf_pools.cbuf, raidbp); 1964 1965 /* Fill in the error value */ 1966 1967 req->error = (bp->b_flags & B_ERROR) ? bp->b_error : 0; 1968 1969 simple_lock(&queue->raidPtr->iodone_lock); 1970 1971 /* Drop this one on the "finished" queue... */ 1972 TAILQ_INSERT_TAIL(&(queue->raidPtr->iodone), req, iodone_entries); 1973 1974 /* Let the raidio thread know there is work to be done. */ 1975 wakeup(&(queue->raidPtr->iodone)); 1976 1977 simple_unlock(&queue->raidPtr->iodone_lock); 1978 1979 splx(s); 1980 } 1981 1982 1983 1984 /* 1985 * initialize a buf structure for doing an I/O in the kernel. 1986 */ 1987 static void 1988 InitBP(struct buf *bp, struct vnode *b_vp, unsigned rw_flag, dev_t dev, 1989 RF_SectorNum_t startSect, RF_SectorCount_t numSect, caddr_t buf, 1990 void (*cbFunc) (struct buf *), void *cbArg, int logBytesPerSector, 1991 struct proc *b_proc) 1992 { 1993 /* bp->b_flags = B_PHYS | rw_flag; */ 1994 bp->b_flags = B_CALL | rw_flag; /* XXX need B_PHYS here too??? */ 1995 bp->b_bcount = numSect << logBytesPerSector; 1996 bp->b_bufsize = bp->b_bcount; 1997 bp->b_error = 0; 1998 bp->b_dev = dev; 1999 bp->b_data = buf; 2000 bp->b_blkno = startSect; 2001 bp->b_resid = bp->b_bcount; /* XXX is this right!??!?!! */ 2002 if (bp->b_bcount == 0) { 2003 panic("bp->b_bcount is zero in InitBP!!"); 2004 } 2005 bp->b_proc = b_proc; 2006 bp->b_iodone = cbFunc; 2007 bp->b_vp = b_vp; 2008 2009 } 2010 2011 static void 2012 raidgetdefaultlabel(RF_Raid_t *raidPtr, struct raid_softc *rs, 2013 struct disklabel *lp) 2014 { 2015 memset(lp, 0, sizeof(*lp)); 2016 2017 /* fabricate a label... */ 2018 lp->d_secperunit = raidPtr->totalSectors; 2019 lp->d_secsize = raidPtr->bytesPerSector; 2020 lp->d_nsectors = raidPtr->Layout.dataSectorsPerStripe; 2021 lp->d_ntracks = 4 * raidPtr->numCol; 2022 lp->d_ncylinders = raidPtr->totalSectors / 2023 (lp->d_nsectors * lp->d_ntracks); 2024 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 2025 2026 strncpy(lp->d_typename, "raid", sizeof(lp->d_typename)); 2027 lp->d_type = DTYPE_RAID; 2028 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2029 lp->d_rpm = 3600; 2030 lp->d_interleave = 1; 2031 lp->d_flags = 0; 2032 2033 lp->d_partitions[RAW_PART].p_offset = 0; 2034 lp->d_partitions[RAW_PART].p_size = raidPtr->totalSectors; 2035 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2036 lp->d_npartitions = RAW_PART + 1; 2037 2038 lp->d_magic = DISKMAGIC; 2039 lp->d_magic2 = DISKMAGIC; 2040 lp->d_checksum = dkcksum(rs->sc_dkdev.dk_label); 2041 2042 } 2043 /* 2044 * Read the disklabel from the raid device. If one is not present, fake one 2045 * up. 2046 */ 2047 static void 2048 raidgetdisklabel(dev_t dev) 2049 { 2050 int unit = raidunit(dev); 2051 struct raid_softc *rs = &raid_softc[unit]; 2052 const char *errstring; 2053 struct disklabel *lp = rs->sc_dkdev.dk_label; 2054 struct cpu_disklabel *clp = rs->sc_dkdev.dk_cpulabel; 2055 RF_Raid_t *raidPtr; 2056 2057 db1_printf(("Getting the disklabel...\n")); 2058 2059 memset(clp, 0, sizeof(*clp)); 2060 2061 raidPtr = raidPtrs[unit]; 2062 2063 raidgetdefaultlabel(raidPtr, rs, lp); 2064 2065 /* 2066 * Call the generic disklabel extraction routine. 2067 */ 2068 errstring = readdisklabel(RAIDLABELDEV(dev), raidstrategy, 2069 rs->sc_dkdev.dk_label, rs->sc_dkdev.dk_cpulabel); 2070 if (errstring) 2071 raidmakedisklabel(rs); 2072 else { 2073 int i; 2074 struct partition *pp; 2075 2076 /* 2077 * Sanity check whether the found disklabel is valid. 2078 * 2079 * This is necessary since total size of the raid device 2080 * may vary when an interleave is changed even though exactly 2081 * same componets are used, and old disklabel may used 2082 * if that is found. 2083 */ 2084 if (lp->d_secperunit != rs->sc_size) 2085 printf("raid%d: WARNING: %s: " 2086 "total sector size in disklabel (%d) != " 2087 "the size of raid (%ld)\n", unit, rs->sc_xname, 2088 lp->d_secperunit, (long) rs->sc_size); 2089 for (i = 0; i < lp->d_npartitions; i++) { 2090 pp = &lp->d_partitions[i]; 2091 if (pp->p_offset + pp->p_size > rs->sc_size) 2092 printf("raid%d: WARNING: %s: end of partition `%c' " 2093 "exceeds the size of raid (%ld)\n", 2094 unit, rs->sc_xname, 'a' + i, (long) rs->sc_size); 2095 } 2096 } 2097 2098 } 2099 /* 2100 * Take care of things one might want to take care of in the event 2101 * that a disklabel isn't present. 2102 */ 2103 static void 2104 raidmakedisklabel(struct raid_softc *rs) 2105 { 2106 struct disklabel *lp = rs->sc_dkdev.dk_label; 2107 db1_printf(("Making a label..\n")); 2108 2109 /* 2110 * For historical reasons, if there's no disklabel present 2111 * the raw partition must be marked FS_BSDFFS. 2112 */ 2113 2114 lp->d_partitions[RAW_PART].p_fstype = FS_BSDFFS; 2115 2116 strncpy(lp->d_packname, "default label", sizeof(lp->d_packname)); 2117 2118 lp->d_checksum = dkcksum(lp); 2119 } 2120 /* 2121 * Lookup the provided name in the filesystem. If the file exists, 2122 * is a valid block device, and isn't being used by anyone else, 2123 * set *vpp to the file's vnode. 2124 * You'll find the original of this in ccd.c 2125 */ 2126 int 2127 raidlookup(char *path, struct proc *p, struct vnode **vpp) 2128 { 2129 struct nameidata nd; 2130 struct vnode *vp; 2131 struct vattr va; 2132 int error; 2133 2134 NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, path, p); 2135 if ((error = vn_open(&nd, FREAD | FWRITE, 0)) != 0) { 2136 return (error); 2137 } 2138 vp = nd.ni_vp; 2139 if (vp->v_usecount > 1) { 2140 VOP_UNLOCK(vp, 0); 2141 (void) vn_close(vp, FREAD | FWRITE, p->p_ucred, p); 2142 return (EBUSY); 2143 } 2144 if ((error = VOP_GETATTR(vp, &va, p->p_ucred, p)) != 0) { 2145 VOP_UNLOCK(vp, 0); 2146 (void) vn_close(vp, FREAD | FWRITE, p->p_ucred, p); 2147 return (error); 2148 } 2149 /* XXX: eventually we should handle VREG, too. */ 2150 if (va.va_type != VBLK) { 2151 VOP_UNLOCK(vp, 0); 2152 (void) vn_close(vp, FREAD | FWRITE, p->p_ucred, p); 2153 return (ENOTBLK); 2154 } 2155 VOP_UNLOCK(vp, 0); 2156 *vpp = vp; 2157 return (0); 2158 } 2159 /* 2160 * Wait interruptibly for an exclusive lock. 2161 * 2162 * XXX 2163 * Several drivers do this; it should be abstracted and made MP-safe. 2164 * (Hmm... where have we seen this warning before :-> GO ) 2165 */ 2166 static int 2167 raidlock(struct raid_softc *rs) 2168 { 2169 int error; 2170 2171 while ((rs->sc_flags & RAIDF_LOCKED) != 0) { 2172 rs->sc_flags |= RAIDF_WANTED; 2173 if ((error = 2174 tsleep(rs, PRIBIO | PCATCH, "raidlck", 0)) != 0) 2175 return (error); 2176 } 2177 rs->sc_flags |= RAIDF_LOCKED; 2178 return (0); 2179 } 2180 /* 2181 * Unlock and wake up any waiters. 2182 */ 2183 static void 2184 raidunlock(struct raid_softc *rs) 2185 { 2186 2187 rs->sc_flags &= ~RAIDF_LOCKED; 2188 if ((rs->sc_flags & RAIDF_WANTED) != 0) { 2189 rs->sc_flags &= ~RAIDF_WANTED; 2190 wakeup(rs); 2191 } 2192 } 2193 2194 2195 #define RF_COMPONENT_INFO_OFFSET 16384 /* bytes */ 2196 #define RF_COMPONENT_INFO_SIZE 1024 /* bytes */ 2197 2198 int 2199 raidmarkclean(dev_t dev, struct vnode *b_vp, int mod_counter) 2200 { 2201 RF_ComponentLabel_t clabel; 2202 raidread_component_label(dev, b_vp, &clabel); 2203 clabel.mod_counter = mod_counter; 2204 clabel.clean = RF_RAID_CLEAN; 2205 raidwrite_component_label(dev, b_vp, &clabel); 2206 return(0); 2207 } 2208 2209 2210 int 2211 raidmarkdirty(dev_t dev, struct vnode *b_vp, int mod_counter) 2212 { 2213 RF_ComponentLabel_t clabel; 2214 raidread_component_label(dev, b_vp, &clabel); 2215 clabel.mod_counter = mod_counter; 2216 clabel.clean = RF_RAID_DIRTY; 2217 raidwrite_component_label(dev, b_vp, &clabel); 2218 return(0); 2219 } 2220 2221 /* ARGSUSED */ 2222 int 2223 raidread_component_label(dev_t dev, 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 } 2260 2261 brelse(bp); 2262 return(error); 2263 } 2264 /* ARGSUSED */ 2265 int 2266 raidwrite_component_label(dev_t dev, struct vnode *b_vp, 2267 RF_ComponentLabel_t *clabel) 2268 { 2269 struct buf *bp; 2270 const struct bdevsw *bdev; 2271 int error; 2272 2273 /* get a block of the appropriate size... */ 2274 bp = geteblk((int)RF_COMPONENT_INFO_SIZE); 2275 bp->b_dev = dev; 2276 2277 /* get our ducks in a row for the write */ 2278 bp->b_blkno = RF_COMPONENT_INFO_OFFSET / DEV_BSIZE; 2279 bp->b_bcount = RF_COMPONENT_INFO_SIZE; 2280 bp->b_flags |= B_WRITE; 2281 bp->b_resid = RF_COMPONENT_INFO_SIZE / DEV_BSIZE; 2282 2283 memset(bp->b_data, 0, RF_COMPONENT_INFO_SIZE ); 2284 2285 memcpy(bp->b_data, clabel, sizeof(RF_ComponentLabel_t)); 2286 2287 bdev = bdevsw_lookup(bp->b_dev); 2288 if (bdev == NULL) 2289 return (ENXIO); 2290 (*bdev->d_strategy)(bp); 2291 error = biowait(bp); 2292 brelse(bp); 2293 if (error) { 2294 #if 1 2295 printf("Failed to write RAID component info!\n"); 2296 #endif 2297 } 2298 2299 return(error); 2300 } 2301 2302 void 2303 rf_markalldirty(RF_Raid_t *raidPtr) 2304 { 2305 RF_ComponentLabel_t clabel; 2306 int sparecol; 2307 int c; 2308 int j; 2309 int scol = -1; 2310 2311 raidPtr->mod_counter++; 2312 for (c = 0; c < raidPtr->numCol; c++) { 2313 /* we don't want to touch (at all) a disk that has 2314 failed */ 2315 if (!RF_DEAD_DISK(raidPtr->Disks[c].status)) { 2316 raidread_component_label( 2317 raidPtr->Disks[c].dev, 2318 raidPtr->raid_cinfo[c].ci_vp, 2319 &clabel); 2320 if (clabel.status == rf_ds_spared) { 2321 /* XXX do something special... 2322 but whatever you do, don't 2323 try to access it!! */ 2324 } else { 2325 raidmarkdirty( 2326 raidPtr->Disks[c].dev, 2327 raidPtr->raid_cinfo[c].ci_vp, 2328 raidPtr->mod_counter); 2329 } 2330 } 2331 } 2332 2333 for( c = 0; c < raidPtr->numSpare ; c++) { 2334 sparecol = raidPtr->numCol + c; 2335 if (raidPtr->Disks[sparecol].status == rf_ds_used_spare) { 2336 /* 2337 2338 we claim this disk is "optimal" if it's 2339 rf_ds_used_spare, as that means it should be 2340 directly substitutable for the disk it replaced. 2341 We note that too... 2342 2343 */ 2344 2345 for(j=0;j<raidPtr->numCol;j++) { 2346 if (raidPtr->Disks[j].spareCol == sparecol) { 2347 scol = j; 2348 break; 2349 } 2350 } 2351 2352 raidread_component_label( 2353 raidPtr->Disks[sparecol].dev, 2354 raidPtr->raid_cinfo[sparecol].ci_vp, 2355 &clabel); 2356 /* make sure status is noted */ 2357 2358 raid_init_component_label(raidPtr, &clabel); 2359 2360 clabel.row = 0; 2361 clabel.column = scol; 2362 /* Note: we *don't* change status from rf_ds_used_spare 2363 to rf_ds_optimal */ 2364 /* clabel.status = rf_ds_optimal; */ 2365 2366 raidmarkdirty(raidPtr->Disks[sparecol].dev, 2367 raidPtr->raid_cinfo[sparecol].ci_vp, 2368 raidPtr->mod_counter); 2369 } 2370 } 2371 } 2372 2373 2374 void 2375 rf_update_component_labels(RF_Raid_t *raidPtr, int final) 2376 { 2377 RF_ComponentLabel_t clabel; 2378 int sparecol; 2379 int c; 2380 int j; 2381 int scol; 2382 2383 scol = -1; 2384 2385 /* XXX should do extra checks to make sure things really are clean, 2386 rather than blindly setting the clean bit... */ 2387 2388 raidPtr->mod_counter++; 2389 2390 for (c = 0; c < raidPtr->numCol; c++) { 2391 if (raidPtr->Disks[c].status == rf_ds_optimal) { 2392 raidread_component_label( 2393 raidPtr->Disks[c].dev, 2394 raidPtr->raid_cinfo[c].ci_vp, 2395 &clabel); 2396 /* make sure status is noted */ 2397 clabel.status = rf_ds_optimal; 2398 /* bump the counter */ 2399 clabel.mod_counter = raidPtr->mod_counter; 2400 2401 raidwrite_component_label( 2402 raidPtr->Disks[c].dev, 2403 raidPtr->raid_cinfo[c].ci_vp, 2404 &clabel); 2405 if (final == RF_FINAL_COMPONENT_UPDATE) { 2406 if (raidPtr->parity_good == RF_RAID_CLEAN) { 2407 raidmarkclean( 2408 raidPtr->Disks[c].dev, 2409 raidPtr->raid_cinfo[c].ci_vp, 2410 raidPtr->mod_counter); 2411 } 2412 } 2413 } 2414 /* else we don't touch it.. */ 2415 } 2416 2417 for( c = 0; c < raidPtr->numSpare ; c++) { 2418 sparecol = raidPtr->numCol + c; 2419 /* Need to ensure that the reconstruct actually completed! */ 2420 if (raidPtr->Disks[sparecol].status == rf_ds_used_spare) { 2421 /* 2422 2423 we claim this disk is "optimal" if it's 2424 rf_ds_used_spare, as that means it should be 2425 directly substitutable for the disk it replaced. 2426 We note that too... 2427 2428 */ 2429 2430 for(j=0;j<raidPtr->numCol;j++) { 2431 if (raidPtr->Disks[j].spareCol == sparecol) { 2432 scol = j; 2433 break; 2434 } 2435 } 2436 2437 /* XXX shouldn't *really* need this... */ 2438 raidread_component_label( 2439 raidPtr->Disks[sparecol].dev, 2440 raidPtr->raid_cinfo[sparecol].ci_vp, 2441 &clabel); 2442 /* make sure status is noted */ 2443 2444 raid_init_component_label(raidPtr, &clabel); 2445 2446 clabel.mod_counter = raidPtr->mod_counter; 2447 clabel.column = scol; 2448 clabel.status = rf_ds_optimal; 2449 2450 raidwrite_component_label( 2451 raidPtr->Disks[sparecol].dev, 2452 raidPtr->raid_cinfo[sparecol].ci_vp, 2453 &clabel); 2454 if (final == RF_FINAL_COMPONENT_UPDATE) { 2455 if (raidPtr->parity_good == RF_RAID_CLEAN) { 2456 raidmarkclean( raidPtr->Disks[sparecol].dev, 2457 raidPtr->raid_cinfo[sparecol].ci_vp, 2458 raidPtr->mod_counter); 2459 } 2460 } 2461 } 2462 } 2463 } 2464 2465 void 2466 rf_close_component(RF_Raid_t *raidPtr, struct vnode *vp, int auto_configured) 2467 { 2468 struct proc *p; 2469 2470 p = raidPtr->engine_thread; 2471 2472 if (vp != NULL) { 2473 if (auto_configured == 1) { 2474 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 2475 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED, 0); 2476 vput(vp); 2477 2478 } else { 2479 (void) vn_close(vp, FREAD | FWRITE, p->p_ucred, p); 2480 } 2481 } 2482 } 2483 2484 2485 void 2486 rf_UnconfigureVnodes(RF_Raid_t *raidPtr) 2487 { 2488 int r,c; 2489 struct vnode *vp; 2490 int acd; 2491 2492 2493 /* We take this opportunity to close the vnodes like we should.. */ 2494 2495 for (c = 0; c < raidPtr->numCol; c++) { 2496 vp = raidPtr->raid_cinfo[c].ci_vp; 2497 acd = raidPtr->Disks[c].auto_configured; 2498 rf_close_component(raidPtr, vp, acd); 2499 raidPtr->raid_cinfo[c].ci_vp = NULL; 2500 raidPtr->Disks[c].auto_configured = 0; 2501 } 2502 2503 for (r = 0; r < raidPtr->numSpare; r++) { 2504 vp = raidPtr->raid_cinfo[raidPtr->numCol + r].ci_vp; 2505 acd = raidPtr->Disks[raidPtr->numCol + r].auto_configured; 2506 rf_close_component(raidPtr, vp, acd); 2507 raidPtr->raid_cinfo[raidPtr->numCol + r].ci_vp = NULL; 2508 raidPtr->Disks[raidPtr->numCol + r].auto_configured = 0; 2509 } 2510 } 2511 2512 2513 void 2514 rf_ReconThread(struct rf_recon_req *req) 2515 { 2516 int s; 2517 RF_Raid_t *raidPtr; 2518 2519 s = splbio(); 2520 raidPtr = (RF_Raid_t *) req->raidPtr; 2521 raidPtr->recon_in_progress = 1; 2522 2523 rf_FailDisk((RF_Raid_t *) req->raidPtr, req->col, 2524 ((req->flags & RF_FDFLAGS_RECON) ? 1 : 0)); 2525 2526 RF_Free(req, sizeof(*req)); 2527 2528 raidPtr->recon_in_progress = 0; 2529 splx(s); 2530 2531 /* That's all... */ 2532 kthread_exit(0); /* does not return */ 2533 } 2534 2535 void 2536 rf_RewriteParityThread(RF_Raid_t *raidPtr) 2537 { 2538 int retcode; 2539 int s; 2540 2541 raidPtr->parity_rewrite_in_progress = 1; 2542 s = splbio(); 2543 retcode = rf_RewriteParity(raidPtr); 2544 splx(s); 2545 if (retcode) { 2546 printf("raid%d: Error re-writing parity!\n",raidPtr->raidid); 2547 } else { 2548 /* set the clean bit! If we shutdown correctly, 2549 the clean bit on each component label will get 2550 set */ 2551 raidPtr->parity_good = RF_RAID_CLEAN; 2552 } 2553 raidPtr->parity_rewrite_in_progress = 0; 2554 2555 /* Anyone waiting for us to stop? If so, inform them... */ 2556 if (raidPtr->waitShutdown) { 2557 wakeup(&raidPtr->parity_rewrite_in_progress); 2558 } 2559 2560 /* That's all... */ 2561 kthread_exit(0); /* does not return */ 2562 } 2563 2564 2565 void 2566 rf_CopybackThread(RF_Raid_t *raidPtr) 2567 { 2568 int s; 2569 2570 raidPtr->copyback_in_progress = 1; 2571 s = splbio(); 2572 rf_CopybackReconstructedData(raidPtr); 2573 splx(s); 2574 raidPtr->copyback_in_progress = 0; 2575 2576 /* That's all... */ 2577 kthread_exit(0); /* does not return */ 2578 } 2579 2580 2581 void 2582 rf_ReconstructInPlaceThread(struct rf_recon_req *req) 2583 { 2584 int s; 2585 RF_Raid_t *raidPtr; 2586 2587 s = splbio(); 2588 raidPtr = req->raidPtr; 2589 raidPtr->recon_in_progress = 1; 2590 rf_ReconstructInPlace(raidPtr, req->col); 2591 RF_Free(req, sizeof(*req)); 2592 raidPtr->recon_in_progress = 0; 2593 splx(s); 2594 2595 /* That's all... */ 2596 kthread_exit(0); /* does not return */ 2597 } 2598 2599 RF_AutoConfig_t * 2600 rf_find_raid_components() 2601 { 2602 struct vnode *vp; 2603 struct disklabel label; 2604 struct device *dv; 2605 dev_t dev; 2606 int bmajor; 2607 int error; 2608 int i; 2609 int good_one; 2610 RF_ComponentLabel_t *clabel; 2611 RF_AutoConfig_t *ac_list; 2612 RF_AutoConfig_t *ac; 2613 2614 2615 /* initialize the AutoConfig list */ 2616 ac_list = NULL; 2617 2618 /* we begin by trolling through *all* the devices on the system */ 2619 2620 for (dv = alldevs.tqh_first; dv != NULL; 2621 dv = dv->dv_list.tqe_next) { 2622 2623 /* we are only interested in disks... */ 2624 if (dv->dv_class != DV_DISK) 2625 continue; 2626 2627 /* we don't care about floppies... */ 2628 if (!strcmp(dv->dv_cfdata->cf_name,"fd")) { 2629 continue; 2630 } 2631 2632 /* we don't care about CD's... */ 2633 if (!strcmp(dv->dv_cfdata->cf_name,"cd")) { 2634 continue; 2635 } 2636 2637 /* hdfd is the Atari/Hades floppy driver */ 2638 if (!strcmp(dv->dv_cfdata->cf_name,"hdfd")) { 2639 continue; 2640 } 2641 /* fdisa is the Atari/Milan floppy driver */ 2642 if (!strcmp(dv->dv_cfdata->cf_name,"fdisa")) { 2643 continue; 2644 } 2645 2646 /* need to find the device_name_to_block_device_major stuff */ 2647 bmajor = devsw_name2blk(dv->dv_xname, NULL, 0); 2648 2649 /* get a vnode for the raw partition of this disk */ 2650 2651 dev = MAKEDISKDEV(bmajor, dv->dv_unit, RAW_PART); 2652 if (bdevvp(dev, &vp)) 2653 panic("RAID can't alloc vnode"); 2654 2655 error = VOP_OPEN(vp, FREAD, NOCRED, 0); 2656 2657 if (error) { 2658 /* "Who cares." Continue looking 2659 for something that exists*/ 2660 vput(vp); 2661 continue; 2662 } 2663 2664 /* Ok, the disk exists. Go get the disklabel. */ 2665 error = VOP_IOCTL(vp, DIOCGDINFO, &label, FREAD, NOCRED, 0); 2666 if (error) { 2667 /* 2668 * XXX can't happen - open() would 2669 * have errored out (or faked up one) 2670 */ 2671 printf("can't get label for dev %s%c (%d)!?!?\n", 2672 dv->dv_xname, 'a' + RAW_PART, error); 2673 } 2674 2675 /* don't need this any more. We'll allocate it again 2676 a little later if we really do... */ 2677 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 2678 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED, 0); 2679 vput(vp); 2680 2681 for (i=0; i < label.d_npartitions; i++) { 2682 /* We only support partitions marked as RAID */ 2683 if (label.d_partitions[i].p_fstype != FS_RAID) 2684 continue; 2685 2686 dev = MAKEDISKDEV(bmajor, dv->dv_unit, i); 2687 if (bdevvp(dev, &vp)) 2688 panic("RAID can't alloc vnode"); 2689 2690 error = VOP_OPEN(vp, FREAD, NOCRED, 0); 2691 if (error) { 2692 /* Whatever... */ 2693 vput(vp); 2694 continue; 2695 } 2696 2697 good_one = 0; 2698 2699 clabel = (RF_ComponentLabel_t *) 2700 malloc(sizeof(RF_ComponentLabel_t), 2701 M_RAIDFRAME, M_NOWAIT); 2702 if (clabel == NULL) { 2703 /* XXX CLEANUP HERE */ 2704 printf("RAID auto config: out of memory!\n"); 2705 return(NULL); /* XXX probably should panic? */ 2706 } 2707 2708 if (!raidread_component_label(dev, vp, clabel)) { 2709 /* Got the label. Does it look reasonable? */ 2710 if (rf_reasonable_label(clabel) && 2711 (clabel->partitionSize <= 2712 label.d_partitions[i].p_size)) { 2713 #if DEBUG 2714 printf("Component on: %s%c: %d\n", 2715 dv->dv_xname, 'a'+i, 2716 label.d_partitions[i].p_size); 2717 rf_print_component_label(clabel); 2718 #endif 2719 /* if it's reasonable, add it, 2720 else ignore it. */ 2721 ac = (RF_AutoConfig_t *) 2722 malloc(sizeof(RF_AutoConfig_t), 2723 M_RAIDFRAME, 2724 M_NOWAIT); 2725 if (ac == NULL) { 2726 /* XXX should panic?? */ 2727 return(NULL); 2728 } 2729 2730 sprintf(ac->devname, "%s%c", 2731 dv->dv_xname, 'a'+i); 2732 ac->dev = dev; 2733 ac->vp = vp; 2734 ac->clabel = clabel; 2735 ac->next = ac_list; 2736 ac_list = ac; 2737 good_one = 1; 2738 } 2739 } 2740 if (!good_one) { 2741 /* cleanup */ 2742 free(clabel, M_RAIDFRAME); 2743 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 2744 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED, 0); 2745 vput(vp); 2746 } 2747 } 2748 } 2749 return(ac_list); 2750 } 2751 2752 static int 2753 rf_reasonable_label(RF_ComponentLabel_t *clabel) 2754 { 2755 2756 if (((clabel->version==RF_COMPONENT_LABEL_VERSION_1) || 2757 (clabel->version==RF_COMPONENT_LABEL_VERSION)) && 2758 ((clabel->clean == RF_RAID_CLEAN) || 2759 (clabel->clean == RF_RAID_DIRTY)) && 2760 clabel->row >=0 && 2761 clabel->column >= 0 && 2762 clabel->num_rows > 0 && 2763 clabel->num_columns > 0 && 2764 clabel->row < clabel->num_rows && 2765 clabel->column < clabel->num_columns && 2766 clabel->blockSize > 0 && 2767 clabel->numBlocks > 0) { 2768 /* label looks reasonable enough... */ 2769 return(1); 2770 } 2771 return(0); 2772 } 2773 2774 2775 #if DEBUG 2776 void 2777 rf_print_component_label(RF_ComponentLabel_t *clabel) 2778 { 2779 printf(" Row: %d Column: %d Num Rows: %d Num Columns: %d\n", 2780 clabel->row, clabel->column, 2781 clabel->num_rows, clabel->num_columns); 2782 printf(" Version: %d Serial Number: %d Mod Counter: %d\n", 2783 clabel->version, clabel->serial_number, 2784 clabel->mod_counter); 2785 printf(" Clean: %s Status: %d\n", 2786 clabel->clean ? "Yes" : "No", clabel->status ); 2787 printf(" sectPerSU: %d SUsPerPU: %d SUsPerRU: %d\n", 2788 clabel->sectPerSU, clabel->SUsPerPU, clabel->SUsPerRU); 2789 printf(" RAID Level: %c blocksize: %d numBlocks: %d\n", 2790 (char) clabel->parityConfig, clabel->blockSize, 2791 clabel->numBlocks); 2792 printf(" Autoconfig: %s\n", clabel->autoconfigure ? "Yes" : "No" ); 2793 printf(" Contains root partition: %s\n", 2794 clabel->root_partition ? "Yes" : "No" ); 2795 printf(" Last configured as: raid%d\n", clabel->last_unit ); 2796 #if 0 2797 printf(" Config order: %d\n", clabel->config_order); 2798 #endif 2799 2800 } 2801 #endif 2802 2803 RF_ConfigSet_t * 2804 rf_create_auto_sets(RF_AutoConfig_t *ac_list) 2805 { 2806 RF_AutoConfig_t *ac; 2807 RF_ConfigSet_t *config_sets; 2808 RF_ConfigSet_t *cset; 2809 RF_AutoConfig_t *ac_next; 2810 2811 2812 config_sets = NULL; 2813 2814 /* Go through the AutoConfig list, and figure out which components 2815 belong to what sets. */ 2816 ac = ac_list; 2817 while(ac!=NULL) { 2818 /* we're going to putz with ac->next, so save it here 2819 for use at the end of the loop */ 2820 ac_next = ac->next; 2821 2822 if (config_sets == NULL) { 2823 /* will need at least this one... */ 2824 config_sets = (RF_ConfigSet_t *) 2825 malloc(sizeof(RF_ConfigSet_t), 2826 M_RAIDFRAME, M_NOWAIT); 2827 if (config_sets == NULL) { 2828 panic("rf_create_auto_sets: No memory!"); 2829 } 2830 /* this one is easy :) */ 2831 config_sets->ac = ac; 2832 config_sets->next = NULL; 2833 config_sets->rootable = 0; 2834 ac->next = NULL; 2835 } else { 2836 /* which set does this component fit into? */ 2837 cset = config_sets; 2838 while(cset!=NULL) { 2839 if (rf_does_it_fit(cset, ac)) { 2840 /* looks like it matches... */ 2841 ac->next = cset->ac; 2842 cset->ac = ac; 2843 break; 2844 } 2845 cset = cset->next; 2846 } 2847 if (cset==NULL) { 2848 /* didn't find a match above... new set..*/ 2849 cset = (RF_ConfigSet_t *) 2850 malloc(sizeof(RF_ConfigSet_t), 2851 M_RAIDFRAME, M_NOWAIT); 2852 if (cset == NULL) { 2853 panic("rf_create_auto_sets: No memory!"); 2854 } 2855 cset->ac = ac; 2856 ac->next = NULL; 2857 cset->next = config_sets; 2858 cset->rootable = 0; 2859 config_sets = cset; 2860 } 2861 } 2862 ac = ac_next; 2863 } 2864 2865 2866 return(config_sets); 2867 } 2868 2869 static int 2870 rf_does_it_fit(RF_ConfigSet_t *cset, RF_AutoConfig_t *ac) 2871 { 2872 RF_ComponentLabel_t *clabel1, *clabel2; 2873 2874 /* If this one matches the *first* one in the set, that's good 2875 enough, since the other members of the set would have been 2876 through here too... */ 2877 /* note that we are not checking partitionSize here.. 2878 2879 Note that we are also not checking the mod_counters here. 2880 If everything else matches execpt the mod_counter, that's 2881 good enough for this test. We will deal with the mod_counters 2882 a little later in the autoconfiguration process. 2883 2884 (clabel1->mod_counter == clabel2->mod_counter) && 2885 2886 The reason we don't check for this is that failed disks 2887 will have lower modification counts. If those disks are 2888 not added to the set they used to belong to, then they will 2889 form their own set, which may result in 2 different sets, 2890 for example, competing to be configured at raid0, and 2891 perhaps competing to be the root filesystem set. If the 2892 wrong ones get configured, or both attempt to become /, 2893 weird behaviour and or serious lossage will occur. Thus we 2894 need to bring them into the fold here, and kick them out at 2895 a later point. 2896 2897 */ 2898 2899 clabel1 = cset->ac->clabel; 2900 clabel2 = ac->clabel; 2901 if ((clabel1->version == clabel2->version) && 2902 (clabel1->serial_number == clabel2->serial_number) && 2903 (clabel1->num_rows == clabel2->num_rows) && 2904 (clabel1->num_columns == clabel2->num_columns) && 2905 (clabel1->sectPerSU == clabel2->sectPerSU) && 2906 (clabel1->SUsPerPU == clabel2->SUsPerPU) && 2907 (clabel1->SUsPerRU == clabel2->SUsPerRU) && 2908 (clabel1->parityConfig == clabel2->parityConfig) && 2909 (clabel1->maxOutstanding == clabel2->maxOutstanding) && 2910 (clabel1->blockSize == clabel2->blockSize) && 2911 (clabel1->numBlocks == clabel2->numBlocks) && 2912 (clabel1->autoconfigure == clabel2->autoconfigure) && 2913 (clabel1->root_partition == clabel2->root_partition) && 2914 (clabel1->last_unit == clabel2->last_unit) && 2915 (clabel1->config_order == clabel2->config_order)) { 2916 /* if it get's here, it almost *has* to be a match */ 2917 } else { 2918 /* it's not consistent with somebody in the set.. 2919 punt */ 2920 return(0); 2921 } 2922 /* all was fine.. it must fit... */ 2923 return(1); 2924 } 2925 2926 int 2927 rf_have_enough_components(RF_ConfigSet_t *cset) 2928 { 2929 RF_AutoConfig_t *ac; 2930 RF_AutoConfig_t *auto_config; 2931 RF_ComponentLabel_t *clabel; 2932 int c; 2933 int num_cols; 2934 int num_missing; 2935 int mod_counter; 2936 int mod_counter_found; 2937 int even_pair_failed; 2938 char parity_type; 2939 2940 2941 /* check to see that we have enough 'live' components 2942 of this set. If so, we can configure it if necessary */ 2943 2944 num_cols = cset->ac->clabel->num_columns; 2945 parity_type = cset->ac->clabel->parityConfig; 2946 2947 /* XXX Check for duplicate components!?!?!? */ 2948 2949 /* Determine what the mod_counter is supposed to be for this set. */ 2950 2951 mod_counter_found = 0; 2952 mod_counter = 0; 2953 ac = cset->ac; 2954 while(ac!=NULL) { 2955 if (mod_counter_found==0) { 2956 mod_counter = ac->clabel->mod_counter; 2957 mod_counter_found = 1; 2958 } else { 2959 if (ac->clabel->mod_counter > mod_counter) { 2960 mod_counter = ac->clabel->mod_counter; 2961 } 2962 } 2963 ac = ac->next; 2964 } 2965 2966 num_missing = 0; 2967 auto_config = cset->ac; 2968 2969 even_pair_failed = 0; 2970 for(c=0; c<num_cols; c++) { 2971 ac = auto_config; 2972 while(ac!=NULL) { 2973 if ((ac->clabel->column == c) && 2974 (ac->clabel->mod_counter == mod_counter)) { 2975 /* it's this one... */ 2976 #if DEBUG 2977 printf("Found: %s at %d\n", 2978 ac->devname,c); 2979 #endif 2980 break; 2981 } 2982 ac=ac->next; 2983 } 2984 if (ac==NULL) { 2985 /* Didn't find one here! */ 2986 /* special case for RAID 1, especially 2987 where there are more than 2 2988 components (where RAIDframe treats 2989 things a little differently :( ) */ 2990 if (parity_type == '1') { 2991 if (c%2 == 0) { /* even component */ 2992 even_pair_failed = 1; 2993 } else { /* odd component. If 2994 we're failed, and 2995 so is the even 2996 component, it's 2997 "Good Night, Charlie" */ 2998 if (even_pair_failed == 1) { 2999 return(0); 3000 } 3001 } 3002 } else { 3003 /* normal accounting */ 3004 num_missing++; 3005 } 3006 } 3007 if ((parity_type == '1') && (c%2 == 1)) { 3008 /* Just did an even component, and we didn't 3009 bail.. reset the even_pair_failed flag, 3010 and go on to the next component.... */ 3011 even_pair_failed = 0; 3012 } 3013 } 3014 3015 clabel = cset->ac->clabel; 3016 3017 if (((clabel->parityConfig == '0') && (num_missing > 0)) || 3018 ((clabel->parityConfig == '4') && (num_missing > 1)) || 3019 ((clabel->parityConfig == '5') && (num_missing > 1))) { 3020 /* XXX this needs to be made *much* more general */ 3021 /* Too many failures */ 3022 return(0); 3023 } 3024 /* otherwise, all is well, and we've got enough to take a kick 3025 at autoconfiguring this set */ 3026 return(1); 3027 } 3028 3029 void 3030 rf_create_configuration(RF_AutoConfig_t *ac, RF_Config_t *config, 3031 RF_Raid_t *raidPtr) 3032 { 3033 RF_ComponentLabel_t *clabel; 3034 int i; 3035 3036 clabel = ac->clabel; 3037 3038 /* 1. Fill in the common stuff */ 3039 config->numRow = clabel->num_rows = 1; 3040 config->numCol = clabel->num_columns; 3041 config->numSpare = 0; /* XXX should this be set here? */ 3042 config->sectPerSU = clabel->sectPerSU; 3043 config->SUsPerPU = clabel->SUsPerPU; 3044 config->SUsPerRU = clabel->SUsPerRU; 3045 config->parityConfig = clabel->parityConfig; 3046 /* XXX... */ 3047 strcpy(config->diskQueueType,"fifo"); 3048 config->maxOutstandingDiskReqs = clabel->maxOutstanding; 3049 config->layoutSpecificSize = 0; /* XXX ?? */ 3050 3051 while(ac!=NULL) { 3052 /* row/col values will be in range due to the checks 3053 in reasonable_label() */ 3054 strcpy(config->devnames[0][ac->clabel->column], 3055 ac->devname); 3056 ac = ac->next; 3057 } 3058 3059 for(i=0;i<RF_MAXDBGV;i++) { 3060 config->debugVars[i][0] = 0; 3061 } 3062 } 3063 3064 int 3065 rf_set_autoconfig(RF_Raid_t *raidPtr, int new_value) 3066 { 3067 RF_ComponentLabel_t clabel; 3068 struct vnode *vp; 3069 dev_t dev; 3070 int column; 3071 int sparecol; 3072 3073 raidPtr->autoconfigure = new_value; 3074 3075 for(column=0; column<raidPtr->numCol; column++) { 3076 if (raidPtr->Disks[column].status == rf_ds_optimal) { 3077 dev = raidPtr->Disks[column].dev; 3078 vp = raidPtr->raid_cinfo[column].ci_vp; 3079 raidread_component_label(dev, vp, &clabel); 3080 clabel.autoconfigure = new_value; 3081 raidwrite_component_label(dev, vp, &clabel); 3082 } 3083 } 3084 for(column = 0; column < raidPtr->numSpare ; column++) { 3085 sparecol = raidPtr->numCol + column; 3086 if (raidPtr->Disks[sparecol].status == rf_ds_used_spare) { 3087 dev = raidPtr->Disks[sparecol].dev; 3088 vp = raidPtr->raid_cinfo[sparecol].ci_vp; 3089 raidread_component_label(dev, vp, &clabel); 3090 clabel.autoconfigure = new_value; 3091 raidwrite_component_label(dev, vp, &clabel); 3092 } 3093 } 3094 return(new_value); 3095 } 3096 3097 int 3098 rf_set_rootpartition(RF_Raid_t *raidPtr, int new_value) 3099 { 3100 RF_ComponentLabel_t clabel; 3101 struct vnode *vp; 3102 dev_t dev; 3103 int column; 3104 int sparecol; 3105 3106 raidPtr->root_partition = new_value; 3107 for(column=0; column<raidPtr->numCol; column++) { 3108 if (raidPtr->Disks[column].status == rf_ds_optimal) { 3109 dev = raidPtr->Disks[column].dev; 3110 vp = raidPtr->raid_cinfo[column].ci_vp; 3111 raidread_component_label(dev, vp, &clabel); 3112 clabel.root_partition = new_value; 3113 raidwrite_component_label(dev, vp, &clabel); 3114 } 3115 } 3116 for(column = 0; column < raidPtr->numSpare ; column++) { 3117 sparecol = raidPtr->numCol + column; 3118 if (raidPtr->Disks[sparecol].status == rf_ds_used_spare) { 3119 dev = raidPtr->Disks[sparecol].dev; 3120 vp = raidPtr->raid_cinfo[sparecol].ci_vp; 3121 raidread_component_label(dev, vp, &clabel); 3122 clabel.root_partition = new_value; 3123 raidwrite_component_label(dev, vp, &clabel); 3124 } 3125 } 3126 return(new_value); 3127 } 3128 3129 void 3130 rf_release_all_vps(RF_ConfigSet_t *cset) 3131 { 3132 RF_AutoConfig_t *ac; 3133 3134 ac = cset->ac; 3135 while(ac!=NULL) { 3136 /* Close the vp, and give it back */ 3137 if (ac->vp) { 3138 vn_lock(ac->vp, LK_EXCLUSIVE | LK_RETRY); 3139 VOP_CLOSE(ac->vp, FREAD, NOCRED, 0); 3140 vput(ac->vp); 3141 ac->vp = NULL; 3142 } 3143 ac = ac->next; 3144 } 3145 } 3146 3147 3148 void 3149 rf_cleanup_config_set(RF_ConfigSet_t *cset) 3150 { 3151 RF_AutoConfig_t *ac; 3152 RF_AutoConfig_t *next_ac; 3153 3154 ac = cset->ac; 3155 while(ac!=NULL) { 3156 next_ac = ac->next; 3157 /* nuke the label */ 3158 free(ac->clabel, M_RAIDFRAME); 3159 /* cleanup the config structure */ 3160 free(ac, M_RAIDFRAME); 3161 /* "next.." */ 3162 ac = next_ac; 3163 } 3164 /* and, finally, nuke the config set */ 3165 free(cset, M_RAIDFRAME); 3166 } 3167 3168 3169 void 3170 raid_init_component_label(RF_Raid_t *raidPtr, RF_ComponentLabel_t *clabel) 3171 { 3172 /* current version number */ 3173 clabel->version = RF_COMPONENT_LABEL_VERSION; 3174 clabel->serial_number = raidPtr->serial_number; 3175 clabel->mod_counter = raidPtr->mod_counter; 3176 clabel->num_rows = 1; 3177 clabel->num_columns = raidPtr->numCol; 3178 clabel->clean = RF_RAID_DIRTY; /* not clean */ 3179 clabel->status = rf_ds_optimal; /* "It's good!" */ 3180 3181 clabel->sectPerSU = raidPtr->Layout.sectorsPerStripeUnit; 3182 clabel->SUsPerPU = raidPtr->Layout.SUsPerPU; 3183 clabel->SUsPerRU = raidPtr->Layout.SUsPerRU; 3184 3185 clabel->blockSize = raidPtr->bytesPerSector; 3186 clabel->numBlocks = raidPtr->sectorsPerDisk; 3187 3188 /* XXX not portable */ 3189 clabel->parityConfig = raidPtr->Layout.map->parityConfig; 3190 clabel->maxOutstanding = raidPtr->maxOutstanding; 3191 clabel->autoconfigure = raidPtr->autoconfigure; 3192 clabel->root_partition = raidPtr->root_partition; 3193 clabel->last_unit = raidPtr->raidid; 3194 clabel->config_order = raidPtr->config_order; 3195 } 3196 3197 int 3198 rf_auto_config_set(RF_ConfigSet_t *cset, int *unit) 3199 { 3200 RF_Raid_t *raidPtr; 3201 RF_Config_t *config; 3202 int raidID; 3203 int retcode; 3204 3205 #if DEBUG 3206 printf("RAID autoconfigure\n"); 3207 #endif 3208 3209 retcode = 0; 3210 *unit = -1; 3211 3212 /* 1. Create a config structure */ 3213 3214 config = (RF_Config_t *)malloc(sizeof(RF_Config_t), 3215 M_RAIDFRAME, 3216 M_NOWAIT); 3217 if (config==NULL) { 3218 printf("Out of mem!?!?\n"); 3219 /* XXX do something more intelligent here. */ 3220 return(1); 3221 } 3222 3223 memset(config, 0, sizeof(RF_Config_t)); 3224 3225 /* 3226 2. Figure out what RAID ID this one is supposed to live at 3227 See if we can get the same RAID dev that it was configured 3228 on last time.. 3229 */ 3230 3231 raidID = cset->ac->clabel->last_unit; 3232 if ((raidID < 0) || (raidID >= numraid)) { 3233 /* let's not wander off into lala land. */ 3234 raidID = numraid - 1; 3235 } 3236 if (raidPtrs[raidID]->valid != 0) { 3237 3238 /* 3239 Nope... Go looking for an alternative... 3240 Start high so we don't immediately use raid0 if that's 3241 not taken. 3242 */ 3243 3244 for(raidID = numraid - 1; raidID >= 0; raidID--) { 3245 if (raidPtrs[raidID]->valid == 0) { 3246 /* can use this one! */ 3247 break; 3248 } 3249 } 3250 } 3251 3252 if (raidID < 0) { 3253 /* punt... */ 3254 printf("Unable to auto configure this set!\n"); 3255 printf("(Out of RAID devs!)\n"); 3256 return(1); 3257 } 3258 3259 #if DEBUG 3260 printf("Configuring raid%d:\n",raidID); 3261 #endif 3262 3263 raidPtr = raidPtrs[raidID]; 3264 3265 /* XXX all this stuff should be done SOMEWHERE ELSE! */ 3266 raidPtr->raidid = raidID; 3267 raidPtr->openings = RAIDOUTSTANDING; 3268 3269 /* 3. Build the configuration structure */ 3270 rf_create_configuration(cset->ac, config, raidPtr); 3271 3272 /* 4. Do the configuration */ 3273 retcode = rf_Configure(raidPtr, config, cset->ac); 3274 3275 if (retcode == 0) { 3276 3277 raidinit(raidPtrs[raidID]); 3278 3279 rf_markalldirty(raidPtrs[raidID]); 3280 raidPtrs[raidID]->autoconfigure = 1; /* XXX do this here? */ 3281 if (cset->ac->clabel->root_partition==1) { 3282 /* everything configured just fine. Make a note 3283 that this set is eligible to be root. */ 3284 cset->rootable = 1; 3285 /* XXX do this here? */ 3286 raidPtrs[raidID]->root_partition = 1; 3287 } 3288 } 3289 3290 /* 5. Cleanup */ 3291 free(config, M_RAIDFRAME); 3292 3293 *unit = raidID; 3294 return(retcode); 3295 } 3296 3297 void 3298 rf_disk_unbusy(RF_RaidAccessDesc_t *desc) 3299 { 3300 struct buf *bp; 3301 3302 bp = (struct buf *)desc->bp; 3303 disk_unbusy(&raid_softc[desc->raidPtr->raidid].sc_dkdev, 3304 (bp->b_bcount - bp->b_resid), (bp->b_flags & B_READ)); 3305 } 3306 3307 void 3308 rf_pool_init(struct pool *p, size_t size, char *w_chan, 3309 size_t min, size_t max) 3310 { 3311 pool_init(p, size, 0, 0, 0, w_chan, NULL); 3312 pool_sethiwat(p, max); 3313 pool_prime(p, min); 3314 pool_setlowat(p, min); 3315 } 3316
Indexes created Tue Sep 30 11:09:46 GMT 2025