rf_netbsdkintf.c revision 1.271.2.3
1 /* $NetBSD: rf_netbsdkintf.c,v 1.271.2.3 2010/11/06 08:08:33 uebayasi Exp $ */ 2 /*- 3 * Copyright (c) 1996, 1997, 1998, 2008 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 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* 32 * Copyright (c) 1990, 1993 33 * The Regents of the University of California. All rights reserved. 34 * 35 * This code is derived from software contributed to Berkeley by 36 * the Systems Programming Group of the University of Utah Computer 37 * Science Department. 38 * 39 * Redistribution and use in source and binary forms, with or without 40 * modification, are permitted provided that the following conditions 41 * are met: 42 * 1. Redistributions of source code must retain the above copyright 43 * notice, this list of conditions and the following disclaimer. 44 * 2. Redistributions in binary form must reproduce the above copyright 45 * notice, this list of conditions and the following disclaimer in the 46 * documentation and/or other materials provided with the distribution. 47 * 3. Neither the name of the University nor the names of its contributors 48 * may be used to endorse or promote products derived from this software 49 * without specific prior written permission. 50 * 51 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 52 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 53 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 54 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 55 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 56 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 57 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 58 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 59 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 60 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 61 * SUCH DAMAGE. 62 * 63 * from: Utah $Hdr: cd.c 1.6 90/11/28$ 64 * 65 * @(#)cd.c 8.2 (Berkeley) 11/16/93 66 */ 67 68 /* 69 * Copyright (c) 1988 University of Utah. 70 * 71 * This code is derived from software contributed to Berkeley by 72 * the Systems Programming Group of the University of Utah Computer 73 * Science Department. 74 * 75 * Redistribution and use in source and binary forms, with or without 76 * modification, are permitted provided that the following conditions 77 * are met: 78 * 1. Redistributions of source code must retain the above copyright 79 * notice, this list of conditions and the following disclaimer. 80 * 2. Redistributions in binary form must reproduce the above copyright 81 * notice, this list of conditions and the following disclaimer in the 82 * documentation and/or other materials provided with the distribution. 83 * 3. All advertising materials mentioning features or use of this software 84 * must display the following acknowledgement: 85 * This product includes software developed by the University of 86 * California, Berkeley and its contributors. 87 * 4. Neither the name of the University nor the names of its contributors 88 * may be used to endorse or promote products derived from this software 89 * without specific prior written permission. 90 * 91 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 92 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 93 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 94 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 95 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 96 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 97 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 98 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 99 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 100 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 101 * SUCH DAMAGE. 102 * 103 * from: Utah $Hdr: cd.c 1.6 90/11/28$ 104 * 105 * @(#)cd.c 8.2 (Berkeley) 11/16/93 106 */ 107 108 /* 109 * Copyright (c) 1995 Carnegie-Mellon University. 110 * All rights reserved. 111 * 112 * Authors: Mark Holland, Jim Zelenka 113 * 114 * Permission to use, copy, modify and distribute this software and 115 * its documentation is hereby granted, provided that both the copyright 116 * notice and this permission notice appear in all copies of the 117 * software, derivative works or modified versions, and any portions 118 * thereof, and that both notices appear in supporting documentation. 119 * 120 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 121 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 122 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 123 * 124 * Carnegie Mellon requests users of this software to return to 125 * 126 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 127 * School of Computer Science 128 * Carnegie Mellon University 129 * Pittsburgh PA 15213-3890 130 * 131 * any improvements or extensions that they make and grant Carnegie the 132 * rights to redistribute these changes. 133 */ 134 135 /*********************************************************** 136 * 137 * rf_kintf.c -- the kernel interface routines for RAIDframe 138 * 139 ***********************************************************/ 140 141 #include <sys/cdefs.h> 142 __KERNEL_RCSID(0, "$NetBSD: rf_netbsdkintf.c,v 1.271.2.3 2010/11/06 08:08:33 uebayasi Exp $"); 143 144 #ifdef _KERNEL_OPT 145 #include "opt_compat_netbsd.h" 146 #include "opt_raid_autoconfig.h" 147 #include "raid.h" 148 #endif 149 150 #include <sys/param.h> 151 #include <sys/errno.h> 152 #include <sys/pool.h> 153 #include <sys/proc.h> 154 #include <sys/queue.h> 155 #include <sys/disk.h> 156 #include <sys/device.h> 157 #include <sys/stat.h> 158 #include <sys/ioctl.h> 159 #include <sys/fcntl.h> 160 #include <sys/systm.h> 161 #include <sys/vnode.h> 162 #include <sys/disklabel.h> 163 #include <sys/conf.h> 164 #include <sys/buf.h> 165 #include <sys/bufq.h> 166 #include <sys/reboot.h> 167 #include <sys/kauth.h> 168 169 #include <prop/proplib.h> 170 171 #include <dev/raidframe/raidframevar.h> 172 #include <dev/raidframe/raidframeio.h> 173 #include <dev/raidframe/rf_paritymap.h> 174 175 #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 COMPAT_50 190 #include "rf_compat50.h" 191 #endif 192 193 #ifdef DEBUG 194 int rf_kdebug_level = 0; 195 #define db1_printf(a) if (rf_kdebug_level > 0) printf a 196 #else /* DEBUG */ 197 #define db1_printf(a) { } 198 #endif /* DEBUG */ 199 200 static RF_Raid_t **raidPtrs; /* global raid device descriptors */ 201 202 #if (RF_INCLUDE_PARITY_DECLUSTERING_DS > 0) 203 RF_DECLARE_STATIC_MUTEX(rf_sparet_wait_mutex) 204 205 static RF_SparetWait_t *rf_sparet_wait_queue; /* requests to install a 206 * spare table */ 207 static RF_SparetWait_t *rf_sparet_resp_queue; /* responses from 208 * installation process */ 209 #endif 210 211 MALLOC_DEFINE(M_RAIDFRAME, "RAIDframe", "RAIDframe structures"); 212 213 /* prototypes */ 214 static void KernelWakeupFunc(struct buf *); 215 static void InitBP(struct buf *, struct vnode *, unsigned, 216 dev_t, RF_SectorNum_t, RF_SectorCount_t, void *, void (*) (struct buf *), 217 void *, int, struct proc *); 218 static void raidinit(RF_Raid_t *); 219 220 void raidattach(int); 221 static int raid_match(device_t, cfdata_t, void *); 222 static void raid_attach(device_t, device_t, void *); 223 static int raid_detach(device_t, int); 224 225 static int raidread_component_area(dev_t, struct vnode *, void *, size_t, 226 daddr_t, daddr_t); 227 static int raidwrite_component_area(dev_t, struct vnode *, void *, size_t, 228 daddr_t, daddr_t, int); 229 230 static int raidwrite_component_label(dev_t, struct vnode *, 231 RF_ComponentLabel_t *); 232 static int raidread_component_label(dev_t, struct vnode *, 233 RF_ComponentLabel_t *); 234 235 236 dev_type_open(raidopen); 237 dev_type_close(raidclose); 238 dev_type_read(raidread); 239 dev_type_write(raidwrite); 240 dev_type_ioctl(raidioctl); 241 dev_type_strategy(raidstrategy); 242 dev_type_dump(raiddump); 243 dev_type_size(raidsize); 244 245 const struct bdevsw raid_bdevsw = { 246 raidopen, raidclose, raidstrategy, raidioctl, 247 raiddump, raidsize, D_DISK 248 }; 249 250 const struct cdevsw raid_cdevsw = { 251 raidopen, raidclose, raidread, raidwrite, raidioctl, 252 nostop, notty, nopoll, nommap, nokqfilter, D_DISK 253 }; 254 255 static struct dkdriver rf_dkdriver = { raidstrategy, minphys }; 256 257 /* XXX Not sure if the following should be replacing the raidPtrs above, 258 or if it should be used in conjunction with that... 259 */ 260 261 struct raid_softc { 262 device_t sc_dev; 263 int sc_flags; /* flags */ 264 int sc_cflags; /* configuration flags */ 265 uint64_t sc_size; /* size of the raid device */ 266 char sc_xname[20]; /* XXX external name */ 267 struct disk sc_dkdev; /* generic disk device info */ 268 struct bufq_state *buf_queue; /* used for the device queue */ 269 }; 270 /* sc_flags */ 271 #define RAIDF_INITED 0x01 /* unit has been initialized */ 272 #define RAIDF_WLABEL 0x02 /* label area is writable */ 273 #define RAIDF_LABELLING 0x04 /* unit is currently being labelled */ 274 #define RAIDF_SHUTDOWN 0x08 /* unit is being shutdown */ 275 #define RAIDF_WANTED 0x40 /* someone is waiting to obtain a lock */ 276 #define RAIDF_LOCKED 0x80 /* unit is locked */ 277 278 #define raidunit(x) DISKUNIT(x) 279 int numraid = 0; 280 281 extern struct cfdriver raid_cd; 282 CFATTACH_DECL3_NEW(raid, sizeof(struct raid_softc), 283 raid_match, raid_attach, raid_detach, NULL, NULL, NULL, 284 DVF_DETACH_SHUTDOWN); 285 286 /* 287 * Allow RAIDOUTSTANDING number of simultaneous IO's to this RAID device. 288 * Be aware that large numbers can allow the driver to consume a lot of 289 * kernel memory, especially on writes, and in degraded mode reads. 290 * 291 * For example: with a stripe width of 64 blocks (32k) and 5 disks, 292 * a single 64K write will typically require 64K for the old data, 293 * 64K for the old parity, and 64K for the new parity, for a total 294 * of 192K (if the parity buffer is not re-used immediately). 295 * Even it if is used immediately, that's still 128K, which when multiplied 296 * by say 10 requests, is 1280K, *on top* of the 640K of incoming data. 297 * 298 * Now in degraded mode, for example, a 64K read on the above setup may 299 * require data reconstruction, which will require *all* of the 4 remaining 300 * disks to participate -- 4 * 32K/disk == 128K again. 301 */ 302 303 #ifndef RAIDOUTSTANDING 304 #define RAIDOUTSTANDING 6 305 #endif 306 307 #define RAIDLABELDEV(dev) \ 308 (MAKEDISKDEV(major((dev)), raidunit((dev)), RAW_PART)) 309 310 /* declared here, and made public, for the benefit of KVM stuff.. */ 311 struct raid_softc *raid_softc; 312 313 static void raidgetdefaultlabel(RF_Raid_t *, struct raid_softc *, 314 struct disklabel *); 315 static void raidgetdisklabel(dev_t); 316 static void raidmakedisklabel(struct raid_softc *); 317 318 static int raidlock(struct raid_softc *); 319 static void raidunlock(struct raid_softc *); 320 321 static int raid_detach_unlocked(struct raid_softc *); 322 323 static void rf_markalldirty(RF_Raid_t *); 324 static void rf_set_properties(struct raid_softc *, RF_Raid_t *); 325 326 void rf_ReconThread(struct rf_recon_req *); 327 void rf_RewriteParityThread(RF_Raid_t *raidPtr); 328 void rf_CopybackThread(RF_Raid_t *raidPtr); 329 void rf_ReconstructInPlaceThread(struct rf_recon_req *); 330 int rf_autoconfig(device_t); 331 void rf_buildroothack(RF_ConfigSet_t *); 332 333 RF_AutoConfig_t *rf_find_raid_components(void); 334 RF_ConfigSet_t *rf_create_auto_sets(RF_AutoConfig_t *); 335 static int rf_does_it_fit(RF_ConfigSet_t *,RF_AutoConfig_t *); 336 static int rf_reasonable_label(RF_ComponentLabel_t *); 337 void rf_create_configuration(RF_AutoConfig_t *,RF_Config_t *, RF_Raid_t *); 338 int rf_set_autoconfig(RF_Raid_t *, int); 339 int rf_set_rootpartition(RF_Raid_t *, int); 340 void rf_release_all_vps(RF_ConfigSet_t *); 341 void rf_cleanup_config_set(RF_ConfigSet_t *); 342 int rf_have_enough_components(RF_ConfigSet_t *); 343 int rf_auto_config_set(RF_ConfigSet_t *, int *); 344 345 static int raidautoconfig = 0; /* Debugging, mostly. Set to 0 to not 346 allow autoconfig to take place. 347 Note that this is overridden by having 348 RAID_AUTOCONFIG as an option in the 349 kernel config file. */ 350 351 struct RF_Pools_s rf_pools; 352 353 void 354 raidattach(int num) 355 { 356 int raidID; 357 int i, rc; 358 359 aprint_debug("raidattach: Asked for %d units\n", num); 360 361 if (num <= 0) { 362 #ifdef DIAGNOSTIC 363 panic("raidattach: count <= 0"); 364 #endif 365 return; 366 } 367 /* This is where all the initialization stuff gets done. */ 368 369 numraid = num; 370 371 /* Make some space for requested number of units... */ 372 373 RF_Malloc(raidPtrs, num * sizeof(RF_Raid_t *), (RF_Raid_t **)); 374 if (raidPtrs == NULL) { 375 panic("raidPtrs is NULL!!"); 376 } 377 378 #if (RF_INCLUDE_PARITY_DECLUSTERING_DS > 0) 379 rf_mutex_init(&rf_sparet_wait_mutex); 380 381 rf_sparet_wait_queue = rf_sparet_resp_queue = NULL; 382 #endif 383 384 for (i = 0; i < num; i++) 385 raidPtrs[i] = NULL; 386 rc = rf_BootRaidframe(); 387 if (rc == 0) 388 aprint_verbose("Kernelized RAIDframe activated\n"); 389 else 390 panic("Serious error booting RAID!!"); 391 392 /* put together some datastructures like the CCD device does.. This 393 * lets us lock the device and what-not when it gets opened. */ 394 395 raid_softc = (struct raid_softc *) 396 malloc(num * sizeof(struct raid_softc), 397 M_RAIDFRAME, M_NOWAIT); 398 if (raid_softc == NULL) { 399 aprint_error("WARNING: no memory for RAIDframe driver\n"); 400 return; 401 } 402 403 memset(raid_softc, 0, num * sizeof(struct raid_softc)); 404 405 for (raidID = 0; raidID < num; raidID++) { 406 bufq_alloc(&raid_softc[raidID].buf_queue, "fcfs", 0); 407 408 RF_Malloc(raidPtrs[raidID], sizeof(RF_Raid_t), 409 (RF_Raid_t *)); 410 if (raidPtrs[raidID] == NULL) { 411 aprint_error("WARNING: raidPtrs[%d] is NULL\n", raidID); 412 numraid = raidID; 413 return; 414 } 415 } 416 417 if (config_cfattach_attach(raid_cd.cd_name, &raid_ca)) { 418 aprint_error("raidattach: config_cfattach_attach failed?\n"); 419 } 420 421 #ifdef RAID_AUTOCONFIG 422 raidautoconfig = 1; 423 #endif 424 425 /* 426 * Register a finalizer which will be used to auto-config RAID 427 * sets once all real hardware devices have been found. 428 */ 429 if (config_finalize_register(NULL, rf_autoconfig) != 0) 430 aprint_error("WARNING: unable to register RAIDframe finalizer\n"); 431 } 432 433 int 434 rf_autoconfig(device_t self) 435 { 436 RF_AutoConfig_t *ac_list; 437 RF_ConfigSet_t *config_sets; 438 439 if (raidautoconfig == 0) 440 return (0); 441 442 /* XXX This code can only be run once. */ 443 raidautoconfig = 0; 444 445 /* 1. locate all RAID components on the system */ 446 aprint_debug("Searching for RAID components...\n"); 447 ac_list = rf_find_raid_components(); 448 449 /* 2. Sort them into their respective sets. */ 450 config_sets = rf_create_auto_sets(ac_list); 451 452 /* 453 * 3. Evaluate each set andconfigure the valid ones. 454 * This gets done in rf_buildroothack(). 455 */ 456 rf_buildroothack(config_sets); 457 458 return 1; 459 } 460 461 void 462 rf_buildroothack(RF_ConfigSet_t *config_sets) 463 { 464 RF_ConfigSet_t *cset; 465 RF_ConfigSet_t *next_cset; 466 int retcode; 467 int raidID; 468 int rootID; 469 int col; 470 int num_root; 471 char *devname; 472 473 rootID = 0; 474 num_root = 0; 475 cset = config_sets; 476 while (cset != NULL) { 477 next_cset = cset->next; 478 if (rf_have_enough_components(cset) && 479 cset->ac->clabel->autoconfigure==1) { 480 retcode = rf_auto_config_set(cset,&raidID); 481 if (!retcode) { 482 aprint_debug("raid%d: configured ok\n", raidID); 483 if (cset->rootable) { 484 rootID = raidID; 485 num_root++; 486 } 487 } else { 488 /* The autoconfig didn't work :( */ 489 aprint_debug("Autoconfig failed with code %d for raid%d\n", retcode, raidID); 490 rf_release_all_vps(cset); 491 } 492 } else { 493 /* we're not autoconfiguring this set... 494 release the associated resources */ 495 rf_release_all_vps(cset); 496 } 497 /* cleanup */ 498 rf_cleanup_config_set(cset); 499 cset = next_cset; 500 } 501 502 /* if the user has specified what the root device should be 503 then we don't touch booted_device or boothowto... */ 504 505 if (rootspec != NULL) 506 return; 507 508 /* we found something bootable... */ 509 510 if (num_root == 1) { 511 booted_device = raid_softc[rootID].sc_dev; 512 } else if (num_root > 1) { 513 514 /* 515 * Maybe the MD code can help. If it cannot, then 516 * setroot() will discover that we have no 517 * booted_device and will ask the user if nothing was 518 * hardwired in the kernel config file 519 */ 520 521 if (booted_device == NULL) 522 cpu_rootconf(); 523 if (booted_device == NULL) 524 return; 525 526 num_root = 0; 527 for (raidID = 0; raidID < numraid; raidID++) { 528 if (raidPtrs[raidID]->valid == 0) 529 continue; 530 531 if (raidPtrs[raidID]->root_partition == 0) 532 continue; 533 534 for (col = 0; col < raidPtrs[raidID]->numCol; col++) { 535 devname = raidPtrs[raidID]->Disks[col].devname; 536 devname += sizeof("/dev/") - 1; 537 if (strncmp(devname, device_xname(booted_device), 538 strlen(device_xname(booted_device))) != 0) 539 continue; 540 aprint_debug("raid%d includes boot device %s\n", 541 raidID, devname); 542 num_root++; 543 rootID = raidID; 544 } 545 } 546 547 if (num_root == 1) { 548 booted_device = raid_softc[rootID].sc_dev; 549 } else { 550 /* we can't guess.. require the user to answer... */ 551 boothowto |= RB_ASKNAME; 552 } 553 } 554 } 555 556 557 int 558 raidsize(dev_t dev) 559 { 560 struct raid_softc *rs; 561 struct disklabel *lp; 562 int part, unit, omask, size; 563 564 unit = raidunit(dev); 565 if (unit >= numraid) 566 return (-1); 567 rs = &raid_softc[unit]; 568 569 if ((rs->sc_flags & RAIDF_INITED) == 0) 570 return (-1); 571 572 part = DISKPART(dev); 573 omask = rs->sc_dkdev.dk_openmask & (1 << part); 574 lp = rs->sc_dkdev.dk_label; 575 576 if (omask == 0 && raidopen(dev, 0, S_IFBLK, curlwp)) 577 return (-1); 578 579 if (lp->d_partitions[part].p_fstype != FS_SWAP) 580 size = -1; 581 else 582 size = lp->d_partitions[part].p_size * 583 (lp->d_secsize / DEV_BSIZE); 584 585 if (omask == 0 && raidclose(dev, 0, S_IFBLK, curlwp)) 586 return (-1); 587 588 return (size); 589 590 } 591 592 int 593 raiddump(dev_t dev, daddr_t blkno, void *va, size_t size) 594 { 595 int unit = raidunit(dev); 596 struct raid_softc *rs; 597 const struct bdevsw *bdev; 598 struct disklabel *lp; 599 RF_Raid_t *raidPtr; 600 daddr_t offset; 601 int part, c, sparecol, j, scol, dumpto; 602 int error = 0; 603 604 if (unit >= numraid) 605 return (ENXIO); 606 607 rs = &raid_softc[unit]; 608 raidPtr = raidPtrs[unit]; 609 610 if ((rs->sc_flags & RAIDF_INITED) == 0) 611 return ENXIO; 612 613 /* we only support dumping to RAID 1 sets */ 614 if (raidPtr->Layout.numDataCol != 1 || 615 raidPtr->Layout.numParityCol != 1) 616 return EINVAL; 617 618 619 if ((error = raidlock(rs)) != 0) 620 return error; 621 622 if (size % DEV_BSIZE != 0) { 623 error = EINVAL; 624 goto out; 625 } 626 627 if (blkno + size / DEV_BSIZE > rs->sc_size) { 628 printf("%s: blkno (%" PRIu64 ") + size / DEV_BSIZE (%zu) > " 629 "sc->sc_size (%" PRIu64 ")\n", __func__, blkno, 630 size / DEV_BSIZE, rs->sc_size); 631 error = EINVAL; 632 goto out; 633 } 634 635 part = DISKPART(dev); 636 lp = rs->sc_dkdev.dk_label; 637 offset = lp->d_partitions[part].p_offset + RF_PROTECTED_SECTORS; 638 639 /* figure out what device is alive.. */ 640 641 /* 642 Look for a component to dump to. The preference for the 643 component to dump to is as follows: 644 1) the master 645 2) a used_spare of the master 646 3) the slave 647 4) a used_spare of the slave 648 */ 649 650 dumpto = -1; 651 for (c = 0; c < raidPtr->numCol; c++) { 652 if (raidPtr->Disks[c].status == rf_ds_optimal) { 653 /* this might be the one */ 654 dumpto = c; 655 break; 656 } 657 } 658 659 /* 660 At this point we have possibly selected a live master or a 661 live slave. We now check to see if there is a spared 662 master (or a spared slave), if we didn't find a live master 663 or a live slave. 664 */ 665 666 for (c = 0; c < raidPtr->numSpare; c++) { 667 sparecol = raidPtr->numCol + c; 668 if (raidPtr->Disks[sparecol].status == rf_ds_used_spare) { 669 /* How about this one? */ 670 scol = -1; 671 for(j=0;j<raidPtr->numCol;j++) { 672 if (raidPtr->Disks[j].spareCol == sparecol) { 673 scol = j; 674 break; 675 } 676 } 677 if (scol == 0) { 678 /* 679 We must have found a spared master! 680 We'll take that over anything else 681 found so far. (We couldn't have 682 found a real master before, since 683 this is a used spare, and it's 684 saying that it's replacing the 685 master.) On reboot (with 686 autoconfiguration turned on) 687 sparecol will become the 1st 688 component (component0) of this set. 689 */ 690 dumpto = sparecol; 691 break; 692 } else if (scol != -1) { 693 /* 694 Must be a spared slave. We'll dump 695 to that if we havn't found anything 696 else so far. 697 */ 698 if (dumpto == -1) 699 dumpto = sparecol; 700 } 701 } 702 } 703 704 if (dumpto == -1) { 705 /* we couldn't find any live components to dump to!?!? 706 */ 707 error = EINVAL; 708 goto out; 709 } 710 711 bdev = bdevsw_lookup(raidPtr->Disks[dumpto].dev); 712 713 /* 714 Note that blkno is relative to this particular partition. 715 By adding the offset of this partition in the RAID 716 set, and also adding RF_PROTECTED_SECTORS, we get a 717 value that is relative to the partition used for the 718 underlying component. 719 */ 720 721 error = (*bdev->d_dump)(raidPtr->Disks[dumpto].dev, 722 blkno + offset, va, size); 723 724 out: 725 raidunlock(rs); 726 727 return error; 728 } 729 /* ARGSUSED */ 730 int 731 raidopen(dev_t dev, int flags, int fmt, 732 struct lwp *l) 733 { 734 int unit = raidunit(dev); 735 struct raid_softc *rs; 736 struct disklabel *lp; 737 int part, pmask; 738 int error = 0; 739 740 if (unit >= numraid) 741 return (ENXIO); 742 rs = &raid_softc[unit]; 743 744 if ((error = raidlock(rs)) != 0) 745 return (error); 746 747 if ((rs->sc_flags & RAIDF_SHUTDOWN) != 0) { 748 error = EBUSY; 749 goto bad; 750 } 751 752 lp = rs->sc_dkdev.dk_label; 753 754 part = DISKPART(dev); 755 756 /* 757 * If there are wedges, and this is not RAW_PART, then we 758 * need to fail. 759 */ 760 if (rs->sc_dkdev.dk_nwedges != 0 && part != RAW_PART) { 761 error = EBUSY; 762 goto bad; 763 } 764 pmask = (1 << part); 765 766 if ((rs->sc_flags & RAIDF_INITED) && 767 (rs->sc_dkdev.dk_openmask == 0)) 768 raidgetdisklabel(dev); 769 770 /* make sure that this partition exists */ 771 772 if (part != RAW_PART) { 773 if (((rs->sc_flags & RAIDF_INITED) == 0) || 774 ((part >= lp->d_npartitions) || 775 (lp->d_partitions[part].p_fstype == FS_UNUSED))) { 776 error = ENXIO; 777 goto bad; 778 } 779 } 780 /* Prevent this unit from being unconfigured while open. */ 781 switch (fmt) { 782 case S_IFCHR: 783 rs->sc_dkdev.dk_copenmask |= pmask; 784 break; 785 786 case S_IFBLK: 787 rs->sc_dkdev.dk_bopenmask |= pmask; 788 break; 789 } 790 791 if ((rs->sc_dkdev.dk_openmask == 0) && 792 ((rs->sc_flags & RAIDF_INITED) != 0)) { 793 /* First one... mark things as dirty... Note that we *MUST* 794 have done a configure before this. I DO NOT WANT TO BE 795 SCRIBBLING TO RANDOM COMPONENTS UNTIL IT'S BEEN DETERMINED 796 THAT THEY BELONG TOGETHER!!!!! */ 797 /* XXX should check to see if we're only open for reading 798 here... If so, we needn't do this, but then need some 799 other way of keeping track of what's happened.. */ 800 801 rf_markalldirty(raidPtrs[unit]); 802 } 803 804 805 rs->sc_dkdev.dk_openmask = 806 rs->sc_dkdev.dk_copenmask | rs->sc_dkdev.dk_bopenmask; 807 808 bad: 809 raidunlock(rs); 810 811 return (error); 812 813 814 } 815 /* ARGSUSED */ 816 int 817 raidclose(dev_t dev, int flags, int fmt, struct lwp *l) 818 { 819 int unit = raidunit(dev); 820 struct raid_softc *rs; 821 int error = 0; 822 int part; 823 824 if (unit >= numraid) 825 return (ENXIO); 826 rs = &raid_softc[unit]; 827 828 if ((error = raidlock(rs)) != 0) 829 return (error); 830 831 part = DISKPART(dev); 832 833 /* ...that much closer to allowing unconfiguration... */ 834 switch (fmt) { 835 case S_IFCHR: 836 rs->sc_dkdev.dk_copenmask &= ~(1 << part); 837 break; 838 839 case S_IFBLK: 840 rs->sc_dkdev.dk_bopenmask &= ~(1 << part); 841 break; 842 } 843 rs->sc_dkdev.dk_openmask = 844 rs->sc_dkdev.dk_copenmask | rs->sc_dkdev.dk_bopenmask; 845 846 if ((rs->sc_dkdev.dk_openmask == 0) && 847 ((rs->sc_flags & RAIDF_INITED) != 0)) { 848 /* Last one... device is not unconfigured yet. 849 Device shutdown has taken care of setting the 850 clean bits if RAIDF_INITED is not set 851 mark things as clean... */ 852 853 rf_update_component_labels(raidPtrs[unit], 854 RF_FINAL_COMPONENT_UPDATE); 855 856 /* If the kernel is shutting down, it will detach 857 * this RAID set soon enough. 858 */ 859 } 860 861 raidunlock(rs); 862 return (0); 863 864 } 865 866 void 867 raidstrategy(struct buf *bp) 868 { 869 int s; 870 871 unsigned int raidID = raidunit(bp->b_dev); 872 RF_Raid_t *raidPtr; 873 struct raid_softc *rs = &raid_softc[raidID]; 874 int wlabel; 875 876 if ((rs->sc_flags & RAIDF_INITED) ==0) { 877 bp->b_error = ENXIO; 878 goto done; 879 } 880 if (raidID >= numraid || !raidPtrs[raidID]) { 881 bp->b_error = ENODEV; 882 goto done; 883 } 884 raidPtr = raidPtrs[raidID]; 885 if (!raidPtr->valid) { 886 bp->b_error = ENODEV; 887 goto done; 888 } 889 if (bp->b_bcount == 0) { 890 db1_printf(("b_bcount is zero..\n")); 891 goto done; 892 } 893 894 /* 895 * Do bounds checking and adjust transfer. If there's an 896 * error, the bounds check will flag that for us. 897 */ 898 899 wlabel = rs->sc_flags & (RAIDF_WLABEL | RAIDF_LABELLING); 900 if (DISKPART(bp->b_dev) == RAW_PART) { 901 uint64_t size; /* device size in DEV_BSIZE unit */ 902 903 if (raidPtr->logBytesPerSector > DEV_BSHIFT) { 904 size = raidPtr->totalSectors << 905 (raidPtr->logBytesPerSector - DEV_BSHIFT); 906 } else { 907 size = raidPtr->totalSectors >> 908 (DEV_BSHIFT - raidPtr->logBytesPerSector); 909 } 910 if (bounds_check_with_mediasize(bp, DEV_BSIZE, size) <= 0) { 911 goto done; 912 } 913 } else { 914 if (bounds_check_with_label(&rs->sc_dkdev, bp, wlabel) <= 0) { 915 db1_printf(("Bounds check failed!!:%d %d\n", 916 (int) bp->b_blkno, (int) wlabel)); 917 goto done; 918 } 919 } 920 s = splbio(); 921 922 bp->b_resid = 0; 923 924 /* stuff it onto our queue */ 925 bufq_put(rs->buf_queue, bp); 926 927 /* scheduled the IO to happen at the next convenient time */ 928 wakeup(&(raidPtrs[raidID]->iodone)); 929 930 splx(s); 931 return; 932 933 done: 934 bp->b_resid = bp->b_bcount; 935 biodone(bp); 936 } 937 /* ARGSUSED */ 938 int 939 raidread(dev_t dev, struct uio *uio, int flags) 940 { 941 int unit = raidunit(dev); 942 struct raid_softc *rs; 943 944 if (unit >= numraid) 945 return (ENXIO); 946 rs = &raid_softc[unit]; 947 948 if ((rs->sc_flags & RAIDF_INITED) == 0) 949 return (ENXIO); 950 951 return (physio(raidstrategy, NULL, dev, B_READ, minphys, uio)); 952 953 } 954 /* ARGSUSED */ 955 int 956 raidwrite(dev_t dev, struct uio *uio, int flags) 957 { 958 int unit = raidunit(dev); 959 struct raid_softc *rs; 960 961 if (unit >= numraid) 962 return (ENXIO); 963 rs = &raid_softc[unit]; 964 965 if ((rs->sc_flags & RAIDF_INITED) == 0) 966 return (ENXIO); 967 968 return (physio(raidstrategy, NULL, dev, B_WRITE, minphys, uio)); 969 970 } 971 972 static int 973 raid_detach_unlocked(struct raid_softc *rs) 974 { 975 int error; 976 RF_Raid_t *raidPtr; 977 978 raidPtr = raidPtrs[device_unit(rs->sc_dev)]; 979 980 /* 981 * If somebody has a partition mounted, we shouldn't 982 * shutdown. 983 */ 984 if (rs->sc_dkdev.dk_openmask != 0) 985 return EBUSY; 986 987 if ((rs->sc_flags & RAIDF_INITED) == 0) 988 ; /* not initialized: nothing to do */ 989 else if ((error = rf_Shutdown(raidPtr)) != 0) 990 return error; 991 else 992 rs->sc_flags &= ~(RAIDF_INITED|RAIDF_SHUTDOWN); 993 994 /* Detach the disk. */ 995 disk_detach(&rs->sc_dkdev); 996 disk_destroy(&rs->sc_dkdev); 997 998 return 0; 999 } 1000 1001 int 1002 raidioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 1003 { 1004 int unit = raidunit(dev); 1005 int error = 0; 1006 int part, pmask; 1007 cfdata_t cf; 1008 struct raid_softc *rs; 1009 RF_Config_t *k_cfg, *u_cfg; 1010 RF_Raid_t *raidPtr; 1011 RF_RaidDisk_t *diskPtr; 1012 RF_AccTotals_t *totals; 1013 RF_DeviceConfig_t *d_cfg, **ucfgp; 1014 u_char *specific_buf; 1015 int retcode = 0; 1016 int column; 1017 /* int raidid; */ 1018 struct rf_recon_req *rrcopy, *rr; 1019 RF_ComponentLabel_t *clabel; 1020 RF_ComponentLabel_t *ci_label; 1021 RF_ComponentLabel_t **clabel_ptr; 1022 RF_SingleComponent_t *sparePtr,*componentPtr; 1023 RF_SingleComponent_t component; 1024 RF_ProgressInfo_t progressInfo, **progressInfoPtr; 1025 int i, j, d; 1026 #ifdef __HAVE_OLD_DISKLABEL 1027 struct disklabel newlabel; 1028 #endif 1029 struct dkwedge_info *dkw; 1030 1031 if (unit >= numraid) 1032 return (ENXIO); 1033 rs = &raid_softc[unit]; 1034 raidPtr = raidPtrs[unit]; 1035 1036 db1_printf(("raidioctl: %d %d %d %d\n", (int) dev, 1037 (int) DISKPART(dev), (int) unit, (int) cmd)); 1038 1039 /* Must be open for writes for these commands... */ 1040 switch (cmd) { 1041 #ifdef DIOCGSECTORSIZE 1042 case DIOCGSECTORSIZE: 1043 *(u_int *)data = raidPtr->bytesPerSector; 1044 return 0; 1045 case DIOCGMEDIASIZE: 1046 *(off_t *)data = 1047 (off_t)raidPtr->totalSectors * raidPtr->bytesPerSector; 1048 return 0; 1049 #endif 1050 case DIOCSDINFO: 1051 case DIOCWDINFO: 1052 #ifdef __HAVE_OLD_DISKLABEL 1053 case ODIOCWDINFO: 1054 case ODIOCSDINFO: 1055 #endif 1056 case DIOCWLABEL: 1057 case DIOCAWEDGE: 1058 case DIOCDWEDGE: 1059 if ((flag & FWRITE) == 0) 1060 return (EBADF); 1061 } 1062 1063 /* Must be initialized for these... */ 1064 switch (cmd) { 1065 case DIOCGDINFO: 1066 case DIOCSDINFO: 1067 case DIOCWDINFO: 1068 #ifdef __HAVE_OLD_DISKLABEL 1069 case ODIOCGDINFO: 1070 case ODIOCWDINFO: 1071 case ODIOCSDINFO: 1072 case ODIOCGDEFLABEL: 1073 #endif 1074 case DIOCGPART: 1075 case DIOCWLABEL: 1076 case DIOCGDEFLABEL: 1077 case DIOCAWEDGE: 1078 case DIOCDWEDGE: 1079 case DIOCLWEDGES: 1080 case DIOCCACHESYNC: 1081 case RAIDFRAME_SHUTDOWN: 1082 case RAIDFRAME_REWRITEPARITY: 1083 case RAIDFRAME_GET_INFO: 1084 case RAIDFRAME_RESET_ACCTOTALS: 1085 case RAIDFRAME_GET_ACCTOTALS: 1086 case RAIDFRAME_KEEP_ACCTOTALS: 1087 case RAIDFRAME_GET_SIZE: 1088 case RAIDFRAME_FAIL_DISK: 1089 case RAIDFRAME_COPYBACK: 1090 case RAIDFRAME_CHECK_RECON_STATUS: 1091 case RAIDFRAME_CHECK_RECON_STATUS_EXT: 1092 case RAIDFRAME_GET_COMPONENT_LABEL: 1093 case RAIDFRAME_SET_COMPONENT_LABEL: 1094 case RAIDFRAME_ADD_HOT_SPARE: 1095 case RAIDFRAME_REMOVE_HOT_SPARE: 1096 case RAIDFRAME_INIT_LABELS: 1097 case RAIDFRAME_REBUILD_IN_PLACE: 1098 case RAIDFRAME_CHECK_PARITY: 1099 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS: 1100 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS_EXT: 1101 case RAIDFRAME_CHECK_COPYBACK_STATUS: 1102 case RAIDFRAME_CHECK_COPYBACK_STATUS_EXT: 1103 case RAIDFRAME_SET_AUTOCONFIG: 1104 case RAIDFRAME_SET_ROOT: 1105 case RAIDFRAME_DELETE_COMPONENT: 1106 case RAIDFRAME_INCORPORATE_HOT_SPARE: 1107 case RAIDFRAME_PARITYMAP_STATUS: 1108 case RAIDFRAME_PARITYMAP_GET_DISABLE: 1109 case RAIDFRAME_PARITYMAP_SET_DISABLE: 1110 case RAIDFRAME_PARITYMAP_SET_PARAMS: 1111 if ((rs->sc_flags & RAIDF_INITED) == 0) 1112 return (ENXIO); 1113 } 1114 1115 switch (cmd) { 1116 #ifdef COMPAT_50 1117 case RAIDFRAME_GET_INFO50: 1118 return rf_get_info50(raidPtr, data); 1119 1120 case RAIDFRAME_CONFIGURE50: 1121 if ((retcode = rf_config50(raidPtr, unit, data, &k_cfg)) != 0) 1122 return retcode; 1123 goto config; 1124 #endif 1125 /* configure the system */ 1126 case RAIDFRAME_CONFIGURE: 1127 1128 if (raidPtr->valid) { 1129 /* There is a valid RAID set running on this unit! */ 1130 printf("raid%d: Device already configured!\n",unit); 1131 return(EINVAL); 1132 } 1133 1134 /* copy-in the configuration information */ 1135 /* data points to a pointer to the configuration structure */ 1136 1137 u_cfg = *((RF_Config_t **) data); 1138 RF_Malloc(k_cfg, sizeof(RF_Config_t), (RF_Config_t *)); 1139 if (k_cfg == NULL) { 1140 return (ENOMEM); 1141 } 1142 retcode = copyin(u_cfg, k_cfg, sizeof(RF_Config_t)); 1143 if (retcode) { 1144 RF_Free(k_cfg, sizeof(RF_Config_t)); 1145 db1_printf(("rf_ioctl: retcode=%d copyin.1\n", 1146 retcode)); 1147 return (retcode); 1148 } 1149 goto config; 1150 config: 1151 /* allocate a buffer for the layout-specific data, and copy it 1152 * in */ 1153 if (k_cfg->layoutSpecificSize) { 1154 if (k_cfg->layoutSpecificSize > 10000) { 1155 /* sanity check */ 1156 RF_Free(k_cfg, sizeof(RF_Config_t)); 1157 return (EINVAL); 1158 } 1159 RF_Malloc(specific_buf, k_cfg->layoutSpecificSize, 1160 (u_char *)); 1161 if (specific_buf == NULL) { 1162 RF_Free(k_cfg, sizeof(RF_Config_t)); 1163 return (ENOMEM); 1164 } 1165 retcode = copyin(k_cfg->layoutSpecific, specific_buf, 1166 k_cfg->layoutSpecificSize); 1167 if (retcode) { 1168 RF_Free(k_cfg, sizeof(RF_Config_t)); 1169 RF_Free(specific_buf, 1170 k_cfg->layoutSpecificSize); 1171 db1_printf(("rf_ioctl: retcode=%d copyin.2\n", 1172 retcode)); 1173 return (retcode); 1174 } 1175 } else 1176 specific_buf = NULL; 1177 k_cfg->layoutSpecific = specific_buf; 1178 1179 /* should do some kind of sanity check on the configuration. 1180 * Store the sum of all the bytes in the last byte? */ 1181 1182 /* configure the system */ 1183 1184 /* 1185 * Clear the entire RAID descriptor, just to make sure 1186 * there is no stale data left in the case of a 1187 * reconfiguration 1188 */ 1189 memset((char *) raidPtr, 0, sizeof(RF_Raid_t)); 1190 raidPtr->raidid = unit; 1191 1192 retcode = rf_Configure(raidPtr, k_cfg, NULL); 1193 1194 if (retcode == 0) { 1195 1196 /* allow this many simultaneous IO's to 1197 this RAID device */ 1198 raidPtr->openings = RAIDOUTSTANDING; 1199 1200 raidinit(raidPtr); 1201 rf_markalldirty(raidPtr); 1202 } 1203 /* free the buffers. No return code here. */ 1204 if (k_cfg->layoutSpecificSize) { 1205 RF_Free(specific_buf, k_cfg->layoutSpecificSize); 1206 } 1207 RF_Free(k_cfg, sizeof(RF_Config_t)); 1208 1209 return (retcode); 1210 1211 /* shutdown the system */ 1212 case RAIDFRAME_SHUTDOWN: 1213 1214 part = DISKPART(dev); 1215 pmask = (1 << part); 1216 1217 if ((error = raidlock(rs)) != 0) 1218 return (error); 1219 1220 if ((rs->sc_dkdev.dk_openmask & ~pmask) || 1221 ((rs->sc_dkdev.dk_bopenmask & pmask) && 1222 (rs->sc_dkdev.dk_copenmask & pmask))) 1223 retcode = EBUSY; 1224 else { 1225 rs->sc_flags |= RAIDF_SHUTDOWN; 1226 rs->sc_dkdev.dk_copenmask &= ~pmask; 1227 rs->sc_dkdev.dk_bopenmask &= ~pmask; 1228 rs->sc_dkdev.dk_openmask &= ~pmask; 1229 retcode = 0; 1230 } 1231 1232 raidunlock(rs); 1233 1234 if (retcode != 0) 1235 return retcode; 1236 1237 /* free the pseudo device attach bits */ 1238 1239 cf = device_cfdata(rs->sc_dev); 1240 if ((retcode = config_detach(rs->sc_dev, DETACH_QUIET)) == 0) 1241 free(cf, M_RAIDFRAME); 1242 1243 return (retcode); 1244 case RAIDFRAME_GET_COMPONENT_LABEL: 1245 clabel_ptr = (RF_ComponentLabel_t **) data; 1246 /* need to read the component label for the disk indicated 1247 by row,column in clabel */ 1248 1249 /* 1250 * Perhaps there should be an option to skip the in-core 1251 * copy and hit the disk, as with disklabel(8). 1252 */ 1253 RF_Malloc(clabel, sizeof(*clabel), (RF_ComponentLabel_t *)); 1254 1255 retcode = copyin( *clabel_ptr, clabel, 1256 sizeof(RF_ComponentLabel_t)); 1257 1258 if (retcode) { 1259 return(retcode); 1260 } 1261 1262 clabel->row = 0; /* Don't allow looking at anything else.*/ 1263 1264 column = clabel->column; 1265 1266 if ((column < 0) || (column >= raidPtr->numCol + 1267 raidPtr->numSpare)) { 1268 return(EINVAL); 1269 } 1270 1271 RF_Free(clabel, sizeof(*clabel)); 1272 1273 clabel = raidget_component_label(raidPtr, column); 1274 1275 if (retcode == 0) { 1276 retcode = copyout(clabel, *clabel_ptr, 1277 sizeof(RF_ComponentLabel_t)); 1278 } 1279 return (retcode); 1280 1281 #if 0 1282 case RAIDFRAME_SET_COMPONENT_LABEL: 1283 clabel = (RF_ComponentLabel_t *) data; 1284 1285 /* XXX check the label for valid stuff... */ 1286 /* Note that some things *should not* get modified -- 1287 the user should be re-initing the labels instead of 1288 trying to patch things. 1289 */ 1290 1291 raidid = raidPtr->raidid; 1292 #ifdef DEBUG 1293 printf("raid%d: Got component label:\n", raidid); 1294 printf("raid%d: Version: %d\n", raidid, clabel->version); 1295 printf("raid%d: Serial Number: %d\n", raidid, clabel->serial_number); 1296 printf("raid%d: Mod counter: %d\n", raidid, clabel->mod_counter); 1297 printf("raid%d: Column: %d\n", raidid, clabel->column); 1298 printf("raid%d: Num Columns: %d\n", raidid, clabel->num_columns); 1299 printf("raid%d: Clean: %d\n", raidid, clabel->clean); 1300 printf("raid%d: Status: %d\n", raidid, clabel->status); 1301 #endif 1302 clabel->row = 0; 1303 column = clabel->column; 1304 1305 if ((column < 0) || (column >= raidPtr->numCol)) { 1306 return(EINVAL); 1307 } 1308 1309 /* XXX this isn't allowed to do anything for now :-) */ 1310 1311 /* XXX and before it is, we need to fill in the rest 1312 of the fields!?!?!?! */ 1313 memcpy(raidget_component_label(raidPtr, column), 1314 clabel, sizeof(*clabel)); 1315 raidflush_component_label(raidPtr, column); 1316 return (0); 1317 #endif 1318 1319 case RAIDFRAME_INIT_LABELS: 1320 clabel = (RF_ComponentLabel_t *) data; 1321 /* 1322 we only want the serial number from 1323 the above. We get all the rest of the information 1324 from the config that was used to create this RAID 1325 set. 1326 */ 1327 1328 raidPtr->serial_number = clabel->serial_number; 1329 1330 for(column=0;column<raidPtr->numCol;column++) { 1331 diskPtr = &raidPtr->Disks[column]; 1332 if (!RF_DEAD_DISK(diskPtr->status)) { 1333 ci_label = raidget_component_label(raidPtr, 1334 column); 1335 /* Zeroing this is important. */ 1336 memset(ci_label, 0, sizeof(*ci_label)); 1337 raid_init_component_label(raidPtr, ci_label); 1338 ci_label->serial_number = 1339 raidPtr->serial_number; 1340 ci_label->row = 0; /* we dont' pretend to support more */ 1341 ci_label->partitionSize = 1342 diskPtr->partitionSize; 1343 ci_label->column = column; 1344 raidflush_component_label(raidPtr, column); 1345 } 1346 /* XXXjld what about the spares? */ 1347 } 1348 1349 return (retcode); 1350 case RAIDFRAME_SET_AUTOCONFIG: 1351 d = rf_set_autoconfig(raidPtr, *(int *) data); 1352 printf("raid%d: New autoconfig value is: %d\n", 1353 raidPtr->raidid, d); 1354 *(int *) data = d; 1355 return (retcode); 1356 1357 case RAIDFRAME_SET_ROOT: 1358 d = rf_set_rootpartition(raidPtr, *(int *) data); 1359 printf("raid%d: New rootpartition value is: %d\n", 1360 raidPtr->raidid, d); 1361 *(int *) data = d; 1362 return (retcode); 1363 1364 /* initialize all parity */ 1365 case RAIDFRAME_REWRITEPARITY: 1366 1367 if (raidPtr->Layout.map->faultsTolerated == 0) { 1368 /* Parity for RAID 0 is trivially correct */ 1369 raidPtr->parity_good = RF_RAID_CLEAN; 1370 return(0); 1371 } 1372 1373 if (raidPtr->parity_rewrite_in_progress == 1) { 1374 /* Re-write is already in progress! */ 1375 return(EINVAL); 1376 } 1377 1378 retcode = RF_CREATE_THREAD(raidPtr->parity_rewrite_thread, 1379 rf_RewriteParityThread, 1380 raidPtr,"raid_parity"); 1381 return (retcode); 1382 1383 1384 case RAIDFRAME_ADD_HOT_SPARE: 1385 sparePtr = (RF_SingleComponent_t *) data; 1386 memcpy( &component, sparePtr, sizeof(RF_SingleComponent_t)); 1387 retcode = rf_add_hot_spare(raidPtr, &component); 1388 return(retcode); 1389 1390 case RAIDFRAME_REMOVE_HOT_SPARE: 1391 return(retcode); 1392 1393 case RAIDFRAME_DELETE_COMPONENT: 1394 componentPtr = (RF_SingleComponent_t *)data; 1395 memcpy( &component, componentPtr, 1396 sizeof(RF_SingleComponent_t)); 1397 retcode = rf_delete_component(raidPtr, &component); 1398 return(retcode); 1399 1400 case RAIDFRAME_INCORPORATE_HOT_SPARE: 1401 componentPtr = (RF_SingleComponent_t *)data; 1402 memcpy( &component, componentPtr, 1403 sizeof(RF_SingleComponent_t)); 1404 retcode = rf_incorporate_hot_spare(raidPtr, &component); 1405 return(retcode); 1406 1407 case RAIDFRAME_REBUILD_IN_PLACE: 1408 1409 if (raidPtr->Layout.map->faultsTolerated == 0) { 1410 /* Can't do this on a RAID 0!! */ 1411 return(EINVAL); 1412 } 1413 1414 if (raidPtr->recon_in_progress == 1) { 1415 /* a reconstruct is already in progress! */ 1416 return(EINVAL); 1417 } 1418 1419 componentPtr = (RF_SingleComponent_t *) data; 1420 memcpy( &component, componentPtr, 1421 sizeof(RF_SingleComponent_t)); 1422 component.row = 0; /* we don't support any more */ 1423 column = component.column; 1424 1425 if ((column < 0) || (column >= raidPtr->numCol)) { 1426 return(EINVAL); 1427 } 1428 1429 RF_LOCK_MUTEX(raidPtr->mutex); 1430 if ((raidPtr->Disks[column].status == rf_ds_optimal) && 1431 (raidPtr->numFailures > 0)) { 1432 /* XXX 0 above shouldn't be constant!!! */ 1433 /* some component other than this has failed. 1434 Let's not make things worse than they already 1435 are... */ 1436 printf("raid%d: Unable to reconstruct to disk at:\n", 1437 raidPtr->raidid); 1438 printf("raid%d: Col: %d Too many failures.\n", 1439 raidPtr->raidid, column); 1440 RF_UNLOCK_MUTEX(raidPtr->mutex); 1441 return (EINVAL); 1442 } 1443 if (raidPtr->Disks[column].status == 1444 rf_ds_reconstructing) { 1445 printf("raid%d: Unable to reconstruct to disk at:\n", 1446 raidPtr->raidid); 1447 printf("raid%d: Col: %d Reconstruction already occuring!\n", raidPtr->raidid, column); 1448 1449 RF_UNLOCK_MUTEX(raidPtr->mutex); 1450 return (EINVAL); 1451 } 1452 if (raidPtr->Disks[column].status == rf_ds_spared) { 1453 RF_UNLOCK_MUTEX(raidPtr->mutex); 1454 return (EINVAL); 1455 } 1456 RF_UNLOCK_MUTEX(raidPtr->mutex); 1457 1458 RF_Malloc(rrcopy, sizeof(*rrcopy), (struct rf_recon_req *)); 1459 if (rrcopy == NULL) 1460 return(ENOMEM); 1461 1462 rrcopy->raidPtr = (void *) raidPtr; 1463 rrcopy->col = column; 1464 1465 retcode = RF_CREATE_THREAD(raidPtr->recon_thread, 1466 rf_ReconstructInPlaceThread, 1467 rrcopy,"raid_reconip"); 1468 return(retcode); 1469 1470 case RAIDFRAME_GET_INFO: 1471 if (!raidPtr->valid) 1472 return (ENODEV); 1473 ucfgp = (RF_DeviceConfig_t **) data; 1474 RF_Malloc(d_cfg, sizeof(RF_DeviceConfig_t), 1475 (RF_DeviceConfig_t *)); 1476 if (d_cfg == NULL) 1477 return (ENOMEM); 1478 d_cfg->rows = 1; /* there is only 1 row now */ 1479 d_cfg->cols = raidPtr->numCol; 1480 d_cfg->ndevs = raidPtr->numCol; 1481 if (d_cfg->ndevs >= RF_MAX_DISKS) { 1482 RF_Free(d_cfg, sizeof(RF_DeviceConfig_t)); 1483 return (ENOMEM); 1484 } 1485 d_cfg->nspares = raidPtr->numSpare; 1486 if (d_cfg->nspares >= RF_MAX_DISKS) { 1487 RF_Free(d_cfg, sizeof(RF_DeviceConfig_t)); 1488 return (ENOMEM); 1489 } 1490 d_cfg->maxqdepth = raidPtr->maxQueueDepth; 1491 d = 0; 1492 for (j = 0; j < d_cfg->cols; j++) { 1493 d_cfg->devs[d] = raidPtr->Disks[j]; 1494 d++; 1495 } 1496 for (j = d_cfg->cols, i = 0; i < d_cfg->nspares; i++, j++) { 1497 d_cfg->spares[i] = raidPtr->Disks[j]; 1498 } 1499 retcode = copyout(d_cfg, *ucfgp, sizeof(RF_DeviceConfig_t)); 1500 RF_Free(d_cfg, sizeof(RF_DeviceConfig_t)); 1501 1502 return (retcode); 1503 1504 case RAIDFRAME_CHECK_PARITY: 1505 *(int *) data = raidPtr->parity_good; 1506 return (0); 1507 1508 case RAIDFRAME_PARITYMAP_STATUS: 1509 if (rf_paritymap_ineligible(raidPtr)) 1510 return EINVAL; 1511 rf_paritymap_status(raidPtr->parity_map, 1512 (struct rf_pmstat *)data); 1513 return 0; 1514 1515 case RAIDFRAME_PARITYMAP_SET_PARAMS: 1516 if (rf_paritymap_ineligible(raidPtr)) 1517 return EINVAL; 1518 if (raidPtr->parity_map == NULL) 1519 return ENOENT; /* ??? */ 1520 if (0 != rf_paritymap_set_params(raidPtr->parity_map, 1521 (struct rf_pmparams *)data, 1)) 1522 return EINVAL; 1523 return 0; 1524 1525 case RAIDFRAME_PARITYMAP_GET_DISABLE: 1526 if (rf_paritymap_ineligible(raidPtr)) 1527 return EINVAL; 1528 *(int *) data = rf_paritymap_get_disable(raidPtr); 1529 return 0; 1530 1531 case RAIDFRAME_PARITYMAP_SET_DISABLE: 1532 if (rf_paritymap_ineligible(raidPtr)) 1533 return EINVAL; 1534 rf_paritymap_set_disable(raidPtr, *(int *)data); 1535 /* XXX should errors be passed up? */ 1536 return 0; 1537 1538 case RAIDFRAME_RESET_ACCTOTALS: 1539 memset(&raidPtr->acc_totals, 0, sizeof(raidPtr->acc_totals)); 1540 return (0); 1541 1542 case RAIDFRAME_GET_ACCTOTALS: 1543 totals = (RF_AccTotals_t *) data; 1544 *totals = raidPtr->acc_totals; 1545 return (0); 1546 1547 case RAIDFRAME_KEEP_ACCTOTALS: 1548 raidPtr->keep_acc_totals = *(int *)data; 1549 return (0); 1550 1551 case RAIDFRAME_GET_SIZE: 1552 *(int *) data = raidPtr->totalSectors; 1553 return (0); 1554 1555 /* fail a disk & optionally start reconstruction */ 1556 case RAIDFRAME_FAIL_DISK: 1557 1558 if (raidPtr->Layout.map->faultsTolerated == 0) { 1559 /* Can't do this on a RAID 0!! */ 1560 return(EINVAL); 1561 } 1562 1563 rr = (struct rf_recon_req *) data; 1564 rr->row = 0; 1565 if (rr->col < 0 || rr->col >= raidPtr->numCol) 1566 return (EINVAL); 1567 1568 1569 RF_LOCK_MUTEX(raidPtr->mutex); 1570 if (raidPtr->status == rf_rs_reconstructing) { 1571 /* you can't fail a disk while we're reconstructing! */ 1572 /* XXX wrong for RAID6 */ 1573 RF_UNLOCK_MUTEX(raidPtr->mutex); 1574 return (EINVAL); 1575 } 1576 if ((raidPtr->Disks[rr->col].status == 1577 rf_ds_optimal) && (raidPtr->numFailures > 0)) { 1578 /* some other component has failed. Let's not make 1579 things worse. XXX wrong for RAID6 */ 1580 RF_UNLOCK_MUTEX(raidPtr->mutex); 1581 return (EINVAL); 1582 } 1583 if (raidPtr->Disks[rr->col].status == rf_ds_spared) { 1584 /* Can't fail a spared disk! */ 1585 RF_UNLOCK_MUTEX(raidPtr->mutex); 1586 return (EINVAL); 1587 } 1588 RF_UNLOCK_MUTEX(raidPtr->mutex); 1589 1590 /* make a copy of the recon request so that we don't rely on 1591 * the user's buffer */ 1592 RF_Malloc(rrcopy, sizeof(*rrcopy), (struct rf_recon_req *)); 1593 if (rrcopy == NULL) 1594 return(ENOMEM); 1595 memcpy(rrcopy, rr, sizeof(*rr)); 1596 rrcopy->raidPtr = (void *) raidPtr; 1597 1598 retcode = RF_CREATE_THREAD(raidPtr->recon_thread, 1599 rf_ReconThread, 1600 rrcopy,"raid_recon"); 1601 return (0); 1602 1603 /* invoke a copyback operation after recon on whatever disk 1604 * needs it, if any */ 1605 case RAIDFRAME_COPYBACK: 1606 1607 if (raidPtr->Layout.map->faultsTolerated == 0) { 1608 /* This makes no sense on a RAID 0!! */ 1609 return(EINVAL); 1610 } 1611 1612 if (raidPtr->copyback_in_progress == 1) { 1613 /* Copyback is already in progress! */ 1614 return(EINVAL); 1615 } 1616 1617 retcode = RF_CREATE_THREAD(raidPtr->copyback_thread, 1618 rf_CopybackThread, 1619 raidPtr,"raid_copyback"); 1620 return (retcode); 1621 1622 /* return the percentage completion of reconstruction */ 1623 case RAIDFRAME_CHECK_RECON_STATUS: 1624 if (raidPtr->Layout.map->faultsTolerated == 0) { 1625 /* This makes no sense on a RAID 0, so tell the 1626 user it's done. */ 1627 *(int *) data = 100; 1628 return(0); 1629 } 1630 if (raidPtr->status != rf_rs_reconstructing) 1631 *(int *) data = 100; 1632 else { 1633 if (raidPtr->reconControl->numRUsTotal > 0) { 1634 *(int *) data = (raidPtr->reconControl->numRUsComplete * 100 / raidPtr->reconControl->numRUsTotal); 1635 } else { 1636 *(int *) data = 0; 1637 } 1638 } 1639 return (0); 1640 case RAIDFRAME_CHECK_RECON_STATUS_EXT: 1641 progressInfoPtr = (RF_ProgressInfo_t **) data; 1642 if (raidPtr->status != rf_rs_reconstructing) { 1643 progressInfo.remaining = 0; 1644 progressInfo.completed = 100; 1645 progressInfo.total = 100; 1646 } else { 1647 progressInfo.total = 1648 raidPtr->reconControl->numRUsTotal; 1649 progressInfo.completed = 1650 raidPtr->reconControl->numRUsComplete; 1651 progressInfo.remaining = progressInfo.total - 1652 progressInfo.completed; 1653 } 1654 retcode = copyout(&progressInfo, *progressInfoPtr, 1655 sizeof(RF_ProgressInfo_t)); 1656 return (retcode); 1657 1658 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS: 1659 if (raidPtr->Layout.map->faultsTolerated == 0) { 1660 /* This makes no sense on a RAID 0, so tell the 1661 user it's done. */ 1662 *(int *) data = 100; 1663 return(0); 1664 } 1665 if (raidPtr->parity_rewrite_in_progress == 1) { 1666 *(int *) data = 100 * 1667 raidPtr->parity_rewrite_stripes_done / 1668 raidPtr->Layout.numStripe; 1669 } else { 1670 *(int *) data = 100; 1671 } 1672 return (0); 1673 1674 case RAIDFRAME_CHECK_PARITYREWRITE_STATUS_EXT: 1675 progressInfoPtr = (RF_ProgressInfo_t **) data; 1676 if (raidPtr->parity_rewrite_in_progress == 1) { 1677 progressInfo.total = raidPtr->Layout.numStripe; 1678 progressInfo.completed = 1679 raidPtr->parity_rewrite_stripes_done; 1680 progressInfo.remaining = progressInfo.total - 1681 progressInfo.completed; 1682 } else { 1683 progressInfo.remaining = 0; 1684 progressInfo.completed = 100; 1685 progressInfo.total = 100; 1686 } 1687 retcode = copyout(&progressInfo, *progressInfoPtr, 1688 sizeof(RF_ProgressInfo_t)); 1689 return (retcode); 1690 1691 case RAIDFRAME_CHECK_COPYBACK_STATUS: 1692 if (raidPtr->Layout.map->faultsTolerated == 0) { 1693 /* This makes no sense on a RAID 0 */ 1694 *(int *) data = 100; 1695 return(0); 1696 } 1697 if (raidPtr->copyback_in_progress == 1) { 1698 *(int *) data = 100 * raidPtr->copyback_stripes_done / 1699 raidPtr->Layout.numStripe; 1700 } else { 1701 *(int *) data = 100; 1702 } 1703 return (0); 1704 1705 case RAIDFRAME_CHECK_COPYBACK_STATUS_EXT: 1706 progressInfoPtr = (RF_ProgressInfo_t **) data; 1707 if (raidPtr->copyback_in_progress == 1) { 1708 progressInfo.total = raidPtr->Layout.numStripe; 1709 progressInfo.completed = 1710 raidPtr->copyback_stripes_done; 1711 progressInfo.remaining = progressInfo.total - 1712 progressInfo.completed; 1713 } else { 1714 progressInfo.remaining = 0; 1715 progressInfo.completed = 100; 1716 progressInfo.total = 100; 1717 } 1718 retcode = copyout(&progressInfo, *progressInfoPtr, 1719 sizeof(RF_ProgressInfo_t)); 1720 return (retcode); 1721 1722 /* the sparetable daemon calls this to wait for the kernel to 1723 * need a spare table. this ioctl does not return until a 1724 * spare table is needed. XXX -- calling mpsleep here in the 1725 * ioctl code is almost certainly wrong and evil. -- XXX XXX 1726 * -- I should either compute the spare table in the kernel, 1727 * or have a different -- XXX XXX -- interface (a different 1728 * character device) for delivering the table -- XXX */ 1729 #if 0 1730 case RAIDFRAME_SPARET_WAIT: 1731 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1732 while (!rf_sparet_wait_queue) 1733 mpsleep(&rf_sparet_wait_queue, (PZERO + 1) | PCATCH, "sparet wait", 0, (void *) simple_lock_addr(rf_sparet_wait_mutex), MS_LOCK_SIMPLE); 1734 waitreq = rf_sparet_wait_queue; 1735 rf_sparet_wait_queue = rf_sparet_wait_queue->next; 1736 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1737 1738 /* structure assignment */ 1739 *((RF_SparetWait_t *) data) = *waitreq; 1740 1741 RF_Free(waitreq, sizeof(*waitreq)); 1742 return (0); 1743 1744 /* wakes up a process waiting on SPARET_WAIT and puts an error 1745 * code in it that will cause the dameon to exit */ 1746 case RAIDFRAME_ABORT_SPARET_WAIT: 1747 RF_Malloc(waitreq, sizeof(*waitreq), (RF_SparetWait_t *)); 1748 waitreq->fcol = -1; 1749 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1750 waitreq->next = rf_sparet_wait_queue; 1751 rf_sparet_wait_queue = waitreq; 1752 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1753 wakeup(&rf_sparet_wait_queue); 1754 return (0); 1755 1756 /* used by the spare table daemon to deliver a spare table 1757 * into the kernel */ 1758 case RAIDFRAME_SEND_SPARET: 1759 1760 /* install the spare table */ 1761 retcode = rf_SetSpareTable(raidPtr, *(void **) data); 1762 1763 /* respond to the requestor. the return status of the spare 1764 * table installation is passed in the "fcol" field */ 1765 RF_Malloc(waitreq, sizeof(*waitreq), (RF_SparetWait_t *)); 1766 waitreq->fcol = retcode; 1767 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1768 waitreq->next = rf_sparet_resp_queue; 1769 rf_sparet_resp_queue = waitreq; 1770 wakeup(&rf_sparet_resp_queue); 1771 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1772 1773 return (retcode); 1774 #endif 1775 1776 default: 1777 break; /* fall through to the os-specific code below */ 1778 1779 } 1780 1781 if (!raidPtr->valid) 1782 return (EINVAL); 1783 1784 /* 1785 * Add support for "regular" device ioctls here. 1786 */ 1787 1788 error = disk_ioctl(&rs->sc_dkdev, cmd, data, flag, l); 1789 if (error != EPASSTHROUGH) 1790 return (error); 1791 1792 switch (cmd) { 1793 case DIOCGDINFO: 1794 *(struct disklabel *) data = *(rs->sc_dkdev.dk_label); 1795 break; 1796 #ifdef __HAVE_OLD_DISKLABEL 1797 case ODIOCGDINFO: 1798 newlabel = *(rs->sc_dkdev.dk_label); 1799 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1800 return ENOTTY; 1801 memcpy(data, &newlabel, sizeof (struct olddisklabel)); 1802 break; 1803 #endif 1804 1805 case DIOCGPART: 1806 ((struct partinfo *) data)->disklab = rs->sc_dkdev.dk_label; 1807 ((struct partinfo *) data)->part = 1808 &rs->sc_dkdev.dk_label->d_partitions[DISKPART(dev)]; 1809 break; 1810 1811 case DIOCWDINFO: 1812 case DIOCSDINFO: 1813 #ifdef __HAVE_OLD_DISKLABEL 1814 case ODIOCWDINFO: 1815 case ODIOCSDINFO: 1816 #endif 1817 { 1818 struct disklabel *lp; 1819 #ifdef __HAVE_OLD_DISKLABEL 1820 if (cmd == ODIOCSDINFO || cmd == ODIOCWDINFO) { 1821 memset(&newlabel, 0, sizeof newlabel); 1822 memcpy(&newlabel, data, sizeof (struct olddisklabel)); 1823 lp = &newlabel; 1824 } else 1825 #endif 1826 lp = (struct disklabel *)data; 1827 1828 if ((error = raidlock(rs)) != 0) 1829 return (error); 1830 1831 rs->sc_flags |= RAIDF_LABELLING; 1832 1833 error = setdisklabel(rs->sc_dkdev.dk_label, 1834 lp, 0, rs->sc_dkdev.dk_cpulabel); 1835 if (error == 0) { 1836 if (cmd == DIOCWDINFO 1837 #ifdef __HAVE_OLD_DISKLABEL 1838 || cmd == ODIOCWDINFO 1839 #endif 1840 ) 1841 error = writedisklabel(RAIDLABELDEV(dev), 1842 raidstrategy, rs->sc_dkdev.dk_label, 1843 rs->sc_dkdev.dk_cpulabel); 1844 } 1845 rs->sc_flags &= ~RAIDF_LABELLING; 1846 1847 raidunlock(rs); 1848 1849 if (error) 1850 return (error); 1851 break; 1852 } 1853 1854 case DIOCWLABEL: 1855 if (*(int *) data != 0) 1856 rs->sc_flags |= RAIDF_WLABEL; 1857 else 1858 rs->sc_flags &= ~RAIDF_WLABEL; 1859 break; 1860 1861 case DIOCGDEFLABEL: 1862 raidgetdefaultlabel(raidPtr, rs, (struct disklabel *) data); 1863 break; 1864 1865 #ifdef __HAVE_OLD_DISKLABEL 1866 case ODIOCGDEFLABEL: 1867 raidgetdefaultlabel(raidPtr, rs, &newlabel); 1868 if (newlabel.d_npartitions > OLDMAXPARTITIONS) 1869 return ENOTTY; 1870 memcpy(data, &newlabel, sizeof (struct olddisklabel)); 1871 break; 1872 #endif 1873 1874 case DIOCAWEDGE: 1875 case DIOCDWEDGE: 1876 dkw = (void *)data; 1877 1878 /* If the ioctl happens here, the parent is us. */ 1879 (void)strcpy(dkw->dkw_parent, rs->sc_xname); 1880 return cmd == DIOCAWEDGE ? dkwedge_add(dkw) : dkwedge_del(dkw); 1881 1882 case DIOCLWEDGES: 1883 return dkwedge_list(&rs->sc_dkdev, 1884 (struct dkwedge_list *)data, l); 1885 case DIOCCACHESYNC: 1886 return rf_sync_component_caches(raidPtr); 1887 default: 1888 retcode = ENOTTY; 1889 } 1890 return (retcode); 1891 1892 } 1893 1894 1895 /* raidinit -- complete the rest of the initialization for the 1896 RAIDframe device. */ 1897 1898 1899 static void 1900 raidinit(RF_Raid_t *raidPtr) 1901 { 1902 cfdata_t cf; 1903 struct raid_softc *rs; 1904 int unit; 1905 1906 unit = raidPtr->raidid; 1907 1908 rs = &raid_softc[unit]; 1909 1910 /* XXX should check return code first... */ 1911 rs->sc_flags |= RAIDF_INITED; 1912 1913 /* XXX doesn't check bounds. */ 1914 snprintf(rs->sc_xname, sizeof(rs->sc_xname), "raid%d", unit); 1915 1916 /* attach the pseudo device */ 1917 cf = malloc(sizeof(*cf), M_RAIDFRAME, M_WAITOK); 1918 cf->cf_name = raid_cd.cd_name; 1919 cf->cf_atname = raid_cd.cd_name; 1920 cf->cf_unit = unit; 1921 cf->cf_fstate = FSTATE_STAR; 1922 1923 rs->sc_dev = config_attach_pseudo(cf); 1924 1925 if (rs->sc_dev == NULL) { 1926 printf("raid%d: config_attach_pseudo failed\n", 1927 raidPtr->raidid); 1928 rs->sc_flags &= ~RAIDF_INITED; 1929 free(cf, M_RAIDFRAME); 1930 return; 1931 } 1932 1933 /* disk_attach actually creates space for the CPU disklabel, among 1934 * other things, so it's critical to call this *BEFORE* we try putzing 1935 * with disklabels. */ 1936 1937 disk_init(&rs->sc_dkdev, rs->sc_xname, &rf_dkdriver); 1938 disk_attach(&rs->sc_dkdev); 1939 disk_blocksize(&rs->sc_dkdev, raidPtr->bytesPerSector); 1940 1941 /* XXX There may be a weird interaction here between this, and 1942 * protectedSectors, as used in RAIDframe. */ 1943 1944 rs->sc_size = raidPtr->totalSectors; 1945 1946 dkwedge_discover(&rs->sc_dkdev); 1947 1948 rf_set_properties(rs, raidPtr); 1949 1950 } 1951 #if (RF_INCLUDE_PARITY_DECLUSTERING_DS > 0) 1952 /* wake up the daemon & tell it to get us a spare table 1953 * XXX 1954 * the entries in the queues should be tagged with the raidPtr 1955 * so that in the extremely rare case that two recons happen at once, 1956 * we know for which device were requesting a spare table 1957 * XXX 1958 * 1959 * XXX This code is not currently used. GO 1960 */ 1961 int 1962 rf_GetSpareTableFromDaemon(RF_SparetWait_t *req) 1963 { 1964 int retcode; 1965 1966 RF_LOCK_MUTEX(rf_sparet_wait_mutex); 1967 req->next = rf_sparet_wait_queue; 1968 rf_sparet_wait_queue = req; 1969 wakeup(&rf_sparet_wait_queue); 1970 1971 /* mpsleep unlocks the mutex */ 1972 while (!rf_sparet_resp_queue) { 1973 tsleep(&rf_sparet_resp_queue, PRIBIO, 1974 "raidframe getsparetable", 0); 1975 } 1976 req = rf_sparet_resp_queue; 1977 rf_sparet_resp_queue = req->next; 1978 RF_UNLOCK_MUTEX(rf_sparet_wait_mutex); 1979 1980 retcode = req->fcol; 1981 RF_Free(req, sizeof(*req)); /* this is not the same req as we 1982 * alloc'd */ 1983 return (retcode); 1984 } 1985 #endif 1986 1987 /* a wrapper around rf_DoAccess that extracts appropriate info from the 1988 * bp & passes it down. 1989 * any calls originating in the kernel must use non-blocking I/O 1990 * do some extra sanity checking to return "appropriate" error values for 1991 * certain conditions (to make some standard utilities work) 1992 * 1993 * Formerly known as: rf_DoAccessKernel 1994 */ 1995 void 1996 raidstart(RF_Raid_t *raidPtr) 1997 { 1998 RF_SectorCount_t num_blocks, pb, sum; 1999 RF_RaidAddr_t raid_addr; 2000 struct partition *pp; 2001 daddr_t blocknum; 2002 int unit; 2003 struct raid_softc *rs; 2004 int do_async; 2005 struct buf *bp; 2006 int rc; 2007 2008 unit = raidPtr->raidid; 2009 rs = &raid_softc[unit]; 2010 2011 /* quick check to see if anything has died recently */ 2012 RF_LOCK_MUTEX(raidPtr->mutex); 2013 if (raidPtr->numNewFailures > 0) { 2014 RF_UNLOCK_MUTEX(raidPtr->mutex); 2015 rf_update_component_labels(raidPtr, 2016 RF_NORMAL_COMPONENT_UPDATE); 2017 RF_LOCK_MUTEX(raidPtr->mutex); 2018 raidPtr->numNewFailures--; 2019 } 2020 2021 /* Check to see if we're at the limit... */ 2022 while (raidPtr->openings > 0) { 2023 RF_UNLOCK_MUTEX(raidPtr->mutex); 2024 2025 /* get the next item, if any, from the queue */ 2026 if ((bp = bufq_get(rs->buf_queue)) == NULL) { 2027 /* nothing more to do */ 2028 return; 2029 } 2030 2031 /* Ok, for the bp we have here, bp->b_blkno is relative to the 2032 * partition.. Need to make it absolute to the underlying 2033 * device.. */ 2034 2035 blocknum = bp->b_blkno << DEV_BSHIFT >> raidPtr->logBytesPerSector; 2036 if (DISKPART(bp->b_dev) != RAW_PART) { 2037 pp = &rs->sc_dkdev.dk_label->d_partitions[DISKPART(bp->b_dev)]; 2038 blocknum += pp->p_offset; 2039 } 2040 2041 db1_printf(("Blocks: %d, %d\n", (int) bp->b_blkno, 2042 (int) blocknum)); 2043 2044 db1_printf(("bp->b_bcount = %d\n", (int) bp->b_bcount)); 2045 db1_printf(("bp->b_resid = %d\n", (int) bp->b_resid)); 2046 2047 /* *THIS* is where we adjust what block we're going to... 2048 * but DO NOT TOUCH bp->b_blkno!!! */ 2049 raid_addr = blocknum; 2050 2051 num_blocks = bp->b_bcount >> raidPtr->logBytesPerSector; 2052 pb = (bp->b_bcount & raidPtr->sectorMask) ? 1 : 0; 2053 sum = raid_addr + num_blocks + pb; 2054 if (1 || rf_debugKernelAccess) { 2055 db1_printf(("raid_addr=%d sum=%d num_blocks=%d(+%d) (%d)\n", 2056 (int) raid_addr, (int) sum, (int) num_blocks, 2057 (int) pb, (int) bp->b_resid)); 2058 } 2059 if ((sum > raidPtr->totalSectors) || (sum < raid_addr) 2060 || (sum < num_blocks) || (sum < pb)) { 2061 bp->b_error = ENOSPC; 2062 bp->b_resid = bp->b_bcount; 2063 biodone(bp); 2064 RF_LOCK_MUTEX(raidPtr->mutex); 2065 continue; 2066 } 2067 /* 2068 * XXX rf_DoAccess() should do this, not just DoAccessKernel() 2069 */ 2070 2071 if (bp->b_bcount & raidPtr->sectorMask) { 2072 bp->b_error = EINVAL; 2073 bp->b_resid = bp->b_bcount; 2074 biodone(bp); 2075 RF_LOCK_MUTEX(raidPtr->mutex); 2076 continue; 2077 2078 } 2079 db1_printf(("Calling DoAccess..\n")); 2080 2081 2082 RF_LOCK_MUTEX(raidPtr->mutex); 2083 raidPtr->openings--; 2084 RF_UNLOCK_MUTEX(raidPtr->mutex); 2085 2086 /* 2087 * Everything is async. 2088 */ 2089 do_async = 1; 2090 2091 disk_busy(&rs->sc_dkdev); 2092 2093 /* XXX we're still at splbio() here... do we *really* 2094 need to be? */ 2095 2096 /* don't ever condition on bp->b_flags & B_WRITE. 2097 * always condition on B_READ instead */ 2098 2099 rc = rf_DoAccess(raidPtr, (bp->b_flags & B_READ) ? 2100 RF_IO_TYPE_READ : RF_IO_TYPE_WRITE, 2101 do_async, raid_addr, num_blocks, 2102 bp->b_data, bp, RF_DAG_NONBLOCKING_IO); 2103 2104 if (rc) { 2105 bp->b_error = rc; 2106 bp->b_resid = bp->b_bcount; 2107 biodone(bp); 2108 /* continue loop */ 2109 } 2110 2111 RF_LOCK_MUTEX(raidPtr->mutex); 2112 } 2113 RF_UNLOCK_MUTEX(raidPtr->mutex); 2114 } 2115 2116 2117 2118 2119 /* invoke an I/O from kernel mode. Disk queue should be locked upon entry */ 2120 2121 int 2122 rf_DispatchKernelIO(RF_DiskQueue_t *queue, RF_DiskQueueData_t *req) 2123 { 2124 int op = (req->type == RF_IO_TYPE_READ) ? B_READ : B_WRITE; 2125 struct buf *bp; 2126 2127 req->queue = queue; 2128 bp = req->bp; 2129 2130 switch (req->type) { 2131 case RF_IO_TYPE_NOP: /* used primarily to unlock a locked queue */ 2132 /* XXX need to do something extra here.. */ 2133 /* I'm leaving this in, as I've never actually seen it used, 2134 * and I'd like folks to report it... GO */ 2135 printf(("WAKEUP CALLED\n")); 2136 queue->numOutstanding++; 2137 2138 bp->b_flags = 0; 2139 bp->b_private = req; 2140 2141 KernelWakeupFunc(bp); 2142 break; 2143 2144 case RF_IO_TYPE_READ: 2145 case RF_IO_TYPE_WRITE: 2146 #if RF_ACC_TRACE > 0 2147 if (req->tracerec) { 2148 RF_ETIMER_START(req->tracerec->timer); 2149 } 2150 #endif 2151 InitBP(bp, queue->rf_cinfo->ci_vp, 2152 op, queue->rf_cinfo->ci_dev, 2153 req->sectorOffset, req->numSector, 2154 req->buf, KernelWakeupFunc, (void *) req, 2155 queue->raidPtr->logBytesPerSector, req->b_proc); 2156 2157 if (rf_debugKernelAccess) { 2158 db1_printf(("dispatch: bp->b_blkno = %ld\n", 2159 (long) bp->b_blkno)); 2160 } 2161 queue->numOutstanding++; 2162 queue->last_deq_sector = req->sectorOffset; 2163 /* acc wouldn't have been let in if there were any pending 2164 * reqs at any other priority */ 2165 queue->curPriority = req->priority; 2166 2167 db1_printf(("Going for %c to unit %d col %d\n", 2168 req->type, queue->raidPtr->raidid, 2169 queue->col)); 2170 db1_printf(("sector %d count %d (%d bytes) %d\n", 2171 (int) req->sectorOffset, (int) req->numSector, 2172 (int) (req->numSector << 2173 queue->raidPtr->logBytesPerSector), 2174 (int) queue->raidPtr->logBytesPerSector)); 2175 2176 /* 2177 * XXX: drop lock here since this can block at 2178 * least with backing SCSI devices. Retake it 2179 * to minimize fuss with calling interfaces. 2180 */ 2181 2182 RF_UNLOCK_QUEUE_MUTEX(queue, "unusedparam"); 2183 bdev_strategy(bp); 2184 RF_LOCK_QUEUE_MUTEX(queue, "unusedparam"); 2185 break; 2186 2187 default: 2188 panic("bad req->type in rf_DispatchKernelIO"); 2189 } 2190 db1_printf(("Exiting from DispatchKernelIO\n")); 2191 2192 return (0); 2193 } 2194 /* this is the callback function associated with a I/O invoked from 2195 kernel code. 2196 */ 2197 static void 2198 KernelWakeupFunc(struct buf *bp) 2199 { 2200 RF_DiskQueueData_t *req = NULL; 2201 RF_DiskQueue_t *queue; 2202 int s; 2203 2204 s = splbio(); 2205 db1_printf(("recovering the request queue:\n")); 2206 req = bp->b_private; 2207 2208 queue = (RF_DiskQueue_t *) req->queue; 2209 2210 #if RF_ACC_TRACE > 0 2211 if (req->tracerec) { 2212 RF_ETIMER_STOP(req->tracerec->timer); 2213 RF_ETIMER_EVAL(req->tracerec->timer); 2214 RF_LOCK_MUTEX(rf_tracing_mutex); 2215 req->tracerec->diskwait_us += RF_ETIMER_VAL_US(req->tracerec->timer); 2216 req->tracerec->phys_io_us += RF_ETIMER_VAL_US(req->tracerec->timer); 2217 req->tracerec->num_phys_ios++; 2218 RF_UNLOCK_MUTEX(rf_tracing_mutex); 2219 } 2220 #endif 2221 2222 /* XXX Ok, let's get aggressive... If b_error is set, let's go 2223 * ballistic, and mark the component as hosed... */ 2224 2225 if (bp->b_error != 0) { 2226 /* Mark the disk as dead */ 2227 /* but only mark it once... */ 2228 /* and only if it wouldn't leave this RAID set 2229 completely broken */ 2230 if (((queue->raidPtr->Disks[queue->col].status == 2231 rf_ds_optimal) || 2232 (queue->raidPtr->Disks[queue->col].status == 2233 rf_ds_used_spare)) && 2234 (queue->raidPtr->numFailures < 2235 queue->raidPtr->Layout.map->faultsTolerated)) { 2236 printf("raid%d: IO Error. Marking %s as failed.\n", 2237 queue->raidPtr->raidid, 2238 queue->raidPtr->Disks[queue->col].devname); 2239 queue->raidPtr->Disks[queue->col].status = 2240 rf_ds_failed; 2241 queue->raidPtr->status = rf_rs_degraded; 2242 queue->raidPtr->numFailures++; 2243 queue->raidPtr->numNewFailures++; 2244 } else { /* Disk is already dead... */ 2245 /* printf("Disk already marked as dead!\n"); */ 2246 } 2247 2248 } 2249 2250 /* Fill in the error value */ 2251 2252 req->error = bp->b_error; 2253 2254 simple_lock(&queue->raidPtr->iodone_lock); 2255 2256 /* Drop this one on the "finished" queue... */ 2257 TAILQ_INSERT_TAIL(&(queue->raidPtr->iodone), req, iodone_entries); 2258 2259 /* Let the raidio thread know there is work to be done. */ 2260 wakeup(&(queue->raidPtr->iodone)); 2261 2262 simple_unlock(&queue->raidPtr->iodone_lock); 2263 2264 splx(s); 2265 } 2266 2267 2268 2269 /* 2270 * initialize a buf structure for doing an I/O in the kernel. 2271 */ 2272 static void 2273 InitBP(struct buf *bp, struct vnode *b_vp, unsigned rw_flag, dev_t dev, 2274 RF_SectorNum_t startSect, RF_SectorCount_t numSect, void *bf, 2275 void (*cbFunc) (struct buf *), void *cbArg, int logBytesPerSector, 2276 struct proc *b_proc) 2277 { 2278 /* bp->b_flags = B_PHYS | rw_flag; */ 2279 bp->b_flags = rw_flag; /* XXX need B_PHYS here too??? */ 2280 bp->b_oflags = 0; 2281 bp->b_cflags = 0; 2282 bp->b_bcount = numSect << logBytesPerSector; 2283 bp->b_bufsize = bp->b_bcount; 2284 bp->b_error = 0; 2285 bp->b_dev = dev; 2286 bp->b_data = bf; 2287 bp->b_blkno = startSect << logBytesPerSector >> DEV_BSHIFT; 2288 bp->b_resid = bp->b_bcount; /* XXX is this right!??!?!! */ 2289 if (bp->b_bcount == 0) { 2290 panic("bp->b_bcount is zero in InitBP!!"); 2291 } 2292 bp->b_proc = b_proc; 2293 bp->b_iodone = cbFunc; 2294 bp->b_private = cbArg; 2295 } 2296 2297 static void 2298 raidgetdefaultlabel(RF_Raid_t *raidPtr, struct raid_softc *rs, 2299 struct disklabel *lp) 2300 { 2301 memset(lp, 0, sizeof(*lp)); 2302 2303 /* fabricate a label... */ 2304 lp->d_secperunit = raidPtr->totalSectors; 2305 lp->d_secsize = raidPtr->bytesPerSector; 2306 lp->d_nsectors = raidPtr->Layout.dataSectorsPerStripe; 2307 lp->d_ntracks = 4 * raidPtr->numCol; 2308 lp->d_ncylinders = raidPtr->totalSectors / 2309 (lp->d_nsectors * lp->d_ntracks); 2310 lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; 2311 2312 strncpy(lp->d_typename, "raid", sizeof(lp->d_typename)); 2313 lp->d_type = DTYPE_RAID; 2314 strncpy(lp->d_packname, "fictitious", sizeof(lp->d_packname)); 2315 lp->d_rpm = 3600; 2316 lp->d_interleave = 1; 2317 lp->d_flags = 0; 2318 2319 lp->d_partitions[RAW_PART].p_offset = 0; 2320 lp->d_partitions[RAW_PART].p_size = raidPtr->totalSectors; 2321 lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; 2322 lp->d_npartitions = RAW_PART + 1; 2323 2324 lp->d_magic = DISKMAGIC; 2325 lp->d_magic2 = DISKMAGIC; 2326 lp->d_checksum = dkcksum(rs->sc_dkdev.dk_label); 2327 2328 } 2329 /* 2330 * Read the disklabel from the raid device. If one is not present, fake one 2331 * up. 2332 */ 2333 static void 2334 raidgetdisklabel(dev_t dev) 2335 { 2336 int unit = raidunit(dev); 2337 struct raid_softc *rs = &raid_softc[unit]; 2338 const char *errstring; 2339 struct disklabel *lp = rs->sc_dkdev.dk_label; 2340 struct cpu_disklabel *clp = rs->sc_dkdev.dk_cpulabel; 2341 RF_Raid_t *raidPtr; 2342 2343 db1_printf(("Getting the disklabel...\n")); 2344 2345 memset(clp, 0, sizeof(*clp)); 2346 2347 raidPtr = raidPtrs[unit]; 2348 2349 raidgetdefaultlabel(raidPtr, rs, lp); 2350 2351 /* 2352 * Call the generic disklabel extraction routine. 2353 */ 2354 errstring = readdisklabel(RAIDLABELDEV(dev), raidstrategy, 2355 rs->sc_dkdev.dk_label, rs->sc_dkdev.dk_cpulabel); 2356 if (errstring) 2357 raidmakedisklabel(rs); 2358 else { 2359 int i; 2360 struct partition *pp; 2361 2362 /* 2363 * Sanity check whether the found disklabel is valid. 2364 * 2365 * This is necessary since total size of the raid device 2366 * may vary when an interleave is changed even though exactly 2367 * same components are used, and old disklabel may used 2368 * if that is found. 2369 */ 2370 if (lp->d_secperunit != rs->sc_size) 2371 printf("raid%d: WARNING: %s: " 2372 "total sector size in disklabel (%" PRIu32 ") != " 2373 "the size of raid (%" PRIu64 ")\n", unit, rs->sc_xname, 2374 lp->d_secperunit, rs->sc_size); 2375 for (i = 0; i < lp->d_npartitions; i++) { 2376 pp = &lp->d_partitions[i]; 2377 if (pp->p_offset + pp->p_size > rs->sc_size) 2378 printf("raid%d: WARNING: %s: end of partition `%c' " 2379 "exceeds the size of raid (%" PRIu64 ")\n", 2380 unit, rs->sc_xname, 'a' + i, rs->sc_size); 2381 } 2382 } 2383 2384 } 2385 /* 2386 * Take care of things one might want to take care of in the event 2387 * that a disklabel isn't present. 2388 */ 2389 static void 2390 raidmakedisklabel(struct raid_softc *rs) 2391 { 2392 struct disklabel *lp = rs->sc_dkdev.dk_label; 2393 db1_printf(("Making a label..\n")); 2394 2395 /* 2396 * For historical reasons, if there's no disklabel present 2397 * the raw partition must be marked FS_BSDFFS. 2398 */ 2399 2400 lp->d_partitions[RAW_PART].p_fstype = FS_BSDFFS; 2401 2402 strncpy(lp->d_packname, "default label", sizeof(lp->d_packname)); 2403 2404 lp->d_checksum = dkcksum(lp); 2405 } 2406 /* 2407 * Wait interruptibly for an exclusive lock. 2408 * 2409 * XXX 2410 * Several drivers do this; it should be abstracted and made MP-safe. 2411 * (Hmm... where have we seen this warning before :-> GO ) 2412 */ 2413 static int 2414 raidlock(struct raid_softc *rs) 2415 { 2416 int error; 2417 2418 while ((rs->sc_flags & RAIDF_LOCKED) != 0) { 2419 rs->sc_flags |= RAIDF_WANTED; 2420 if ((error = 2421 tsleep(rs, PRIBIO | PCATCH, "raidlck", 0)) != 0) 2422 return (error); 2423 } 2424 rs->sc_flags |= RAIDF_LOCKED; 2425 return (0); 2426 } 2427 /* 2428 * Unlock and wake up any waiters. 2429 */ 2430 static void 2431 raidunlock(struct raid_softc *rs) 2432 { 2433 2434 rs->sc_flags &= ~RAIDF_LOCKED; 2435 if ((rs->sc_flags & RAIDF_WANTED) != 0) { 2436 rs->sc_flags &= ~RAIDF_WANTED; 2437 wakeup(rs); 2438 } 2439 } 2440 2441 2442 #define RF_COMPONENT_INFO_OFFSET 16384 /* bytes */ 2443 #define RF_COMPONENT_INFO_SIZE 1024 /* bytes */ 2444 #define RF_PARITY_MAP_OFFSET \ 2445 (RF_COMPONENT_INFO_OFFSET + RF_COMPONENT_INFO_SIZE) 2446 #define RF_PARITY_MAP_SIZE RF_PARITYMAP_NBYTE 2447 2448 int 2449 raidmarkclean(RF_Raid_t *raidPtr, RF_RowCol_t col) 2450 { 2451 RF_ComponentLabel_t *clabel; 2452 2453 clabel = raidget_component_label(raidPtr, col); 2454 clabel->clean = RF_RAID_CLEAN; 2455 raidflush_component_label(raidPtr, col); 2456 return(0); 2457 } 2458 2459 2460 int 2461 raidmarkdirty(RF_Raid_t *raidPtr, RF_RowCol_t col) 2462 { 2463 RF_ComponentLabel_t *clabel; 2464 2465 clabel = raidget_component_label(raidPtr, col); 2466 clabel->clean = RF_RAID_DIRTY; 2467 raidflush_component_label(raidPtr, col); 2468 return(0); 2469 } 2470 2471 int 2472 raidfetch_component_label(RF_Raid_t *raidPtr, RF_RowCol_t col) 2473 { 2474 return raidread_component_label(raidPtr->Disks[col].dev, 2475 raidPtr->raid_cinfo[col].ci_vp, 2476 &raidPtr->raid_cinfo[col].ci_label); 2477 } 2478 2479 RF_ComponentLabel_t * 2480 raidget_component_label(RF_Raid_t *raidPtr, RF_RowCol_t col) 2481 { 2482 return &raidPtr->raid_cinfo[col].ci_label; 2483 } 2484 2485 int 2486 raidflush_component_label(RF_Raid_t *raidPtr, RF_RowCol_t col) 2487 { 2488 RF_ComponentLabel_t *label; 2489 2490 label = &raidPtr->raid_cinfo[col].ci_label; 2491 label->mod_counter = raidPtr->mod_counter; 2492 #ifndef RF_NO_PARITY_MAP 2493 label->parity_map_modcount = label->mod_counter; 2494 #endif 2495 return raidwrite_component_label(raidPtr->Disks[col].dev, 2496 raidPtr->raid_cinfo[col].ci_vp, label); 2497 } 2498 2499 2500 static int 2501 raidread_component_label(dev_t dev, struct vnode *b_vp, 2502 RF_ComponentLabel_t *clabel) 2503 { 2504 return raidread_component_area(dev, b_vp, clabel, 2505 sizeof(RF_ComponentLabel_t), 2506 RF_COMPONENT_INFO_OFFSET, RF_COMPONENT_INFO_SIZE); 2507 } 2508 2509 /* ARGSUSED */ 2510 static int 2511 raidread_component_area(dev_t dev, struct vnode *b_vp, void *data, 2512 size_t msize, daddr_t offset, daddr_t dsize) 2513 { 2514 struct buf *bp; 2515 const struct bdevsw *bdev; 2516 int error; 2517 2518 /* XXX should probably ensure that we don't try to do this if 2519 someone has changed rf_protected_sectors. */ 2520 2521 if (b_vp == NULL) { 2522 /* For whatever reason, this component is not valid. 2523 Don't try to read a component label from it. */ 2524 return(EINVAL); 2525 } 2526 2527 /* get a block of the appropriate size... */ 2528 bp = geteblk((int)dsize); 2529 bp->b_dev = dev; 2530 2531 /* get our ducks in a row for the read */ 2532 bp->b_blkno = offset / DEV_BSIZE; 2533 bp->b_bcount = dsize; 2534 bp->b_flags |= B_READ; 2535 bp->b_resid = dsize; 2536 2537 bdev = bdevsw_lookup(bp->b_dev); 2538 if (bdev == NULL) 2539 return (ENXIO); 2540 (*bdev->d_strategy)(bp); 2541 2542 error = biowait(bp); 2543 2544 if (!error) { 2545 memcpy(data, bp->b_data, msize); 2546 } 2547 2548 brelse(bp, 0); 2549 return(error); 2550 } 2551 2552 2553 static int 2554 raidwrite_component_label(dev_t dev, struct vnode *b_vp, 2555 RF_ComponentLabel_t *clabel) 2556 { 2557 return raidwrite_component_area(dev, b_vp, clabel, 2558 sizeof(RF_ComponentLabel_t), 2559 RF_COMPONENT_INFO_OFFSET, RF_COMPONENT_INFO_SIZE, 0); 2560 } 2561 2562 /* ARGSUSED */ 2563 static int 2564 raidwrite_component_area(dev_t dev, struct vnode *b_vp, void *data, 2565 size_t msize, daddr_t offset, daddr_t dsize, int asyncp) 2566 { 2567 struct buf *bp; 2568 const struct bdevsw *bdev; 2569 int error; 2570 2571 /* get a block of the appropriate size... */ 2572 bp = geteblk((int)dsize); 2573 bp->b_dev = dev; 2574 2575 /* get our ducks in a row for the write */ 2576 bp->b_blkno = offset / DEV_BSIZE; 2577 bp->b_bcount = dsize; 2578 bp->b_flags |= B_WRITE | (asyncp ? B_ASYNC : 0); 2579 bp->b_resid = dsize; 2580 2581 memset(bp->b_data, 0, dsize); 2582 memcpy(bp->b_data, data, msize); 2583 2584 bdev = bdevsw_lookup(bp->b_dev); 2585 if (bdev == NULL) 2586 return (ENXIO); 2587 (*bdev->d_strategy)(bp); 2588 if (asyncp) 2589 return 0; 2590 error = biowait(bp); 2591 brelse(bp, 0); 2592 if (error) { 2593 #if 1 2594 printf("Failed to write RAID component info!\n"); 2595 #endif 2596 } 2597 2598 return(error); 2599 } 2600 2601 void 2602 rf_paritymap_kern_write(RF_Raid_t *raidPtr, struct rf_paritymap_ondisk *map) 2603 { 2604 int c; 2605 2606 for (c = 0; c < raidPtr->numCol; c++) { 2607 /* Skip dead disks. */ 2608 if (RF_DEAD_DISK(raidPtr->Disks[c].status)) 2609 continue; 2610 /* XXXjld: what if an error occurs here? */ 2611 raidwrite_component_area(raidPtr->Disks[c].dev, 2612 raidPtr->raid_cinfo[c].ci_vp, map, 2613 RF_PARITYMAP_NBYTE, 2614 RF_PARITY_MAP_OFFSET, RF_PARITY_MAP_SIZE, 0); 2615 } 2616 } 2617 2618 void 2619 rf_paritymap_kern_read(RF_Raid_t *raidPtr, struct rf_paritymap_ondisk *map) 2620 { 2621 struct rf_paritymap_ondisk tmp; 2622 int c,first; 2623 2624 first=1; 2625 for (c = 0; c < raidPtr->numCol; c++) { 2626 /* Skip dead disks. */ 2627 if (RF_DEAD_DISK(raidPtr->Disks[c].status)) 2628 continue; 2629 raidread_component_area(raidPtr->Disks[c].dev, 2630 raidPtr->raid_cinfo[c].ci_vp, &tmp, 2631 RF_PARITYMAP_NBYTE, 2632 RF_PARITY_MAP_OFFSET, RF_PARITY_MAP_SIZE); 2633 if (first) { 2634 memcpy(map, &tmp, sizeof(*map)); 2635 first = 0; 2636 } else { 2637 rf_paritymap_merge(map, &tmp); 2638 } 2639 } 2640 } 2641 2642 void 2643 rf_markalldirty(RF_Raid_t *raidPtr) 2644 { 2645 RF_ComponentLabel_t *clabel; 2646 int sparecol; 2647 int c; 2648 int j; 2649 int scol = -1; 2650 2651 raidPtr->mod_counter++; 2652 for (c = 0; c < raidPtr->numCol; c++) { 2653 /* we don't want to touch (at all) a disk that has 2654 failed */ 2655 if (!RF_DEAD_DISK(raidPtr->Disks[c].status)) { 2656 clabel = raidget_component_label(raidPtr, c); 2657 if (clabel->status == rf_ds_spared) { 2658 /* XXX do something special... 2659 but whatever you do, don't 2660 try to access it!! */ 2661 } else { 2662 raidmarkdirty(raidPtr, c); 2663 } 2664 } 2665 } 2666 2667 for( c = 0; c < raidPtr->numSpare ; c++) { 2668 sparecol = raidPtr->numCol + c; 2669 if (raidPtr->Disks[sparecol].status == rf_ds_used_spare) { 2670 /* 2671 2672 we claim this disk is "optimal" if it's 2673 rf_ds_used_spare, as that means it should be 2674 directly substitutable for the disk it replaced. 2675 We note that too... 2676 2677 */ 2678 2679 for(j=0;j<raidPtr->numCol;j++) { 2680 if (raidPtr->Disks[j].spareCol == sparecol) { 2681 scol = j; 2682 break; 2683 } 2684 } 2685 2686 clabel = raidget_component_label(raidPtr, sparecol); 2687 /* make sure status is noted */ 2688 2689 raid_init_component_label(raidPtr, clabel); 2690 2691 clabel->row = 0; 2692 clabel->column = scol; 2693 /* Note: we *don't* change status from rf_ds_used_spare 2694 to rf_ds_optimal */ 2695 /* clabel.status = rf_ds_optimal; */ 2696 2697 raidmarkdirty(raidPtr, sparecol); 2698 } 2699 } 2700 } 2701 2702 2703 void 2704 rf_update_component_labels(RF_Raid_t *raidPtr, int final) 2705 { 2706 RF_ComponentLabel_t *clabel; 2707 int sparecol; 2708 int c; 2709 int j; 2710 int scol; 2711 2712 scol = -1; 2713 2714 /* XXX should do extra checks to make sure things really are clean, 2715 rather than blindly setting the clean bit... */ 2716 2717 raidPtr->mod_counter++; 2718 2719 for (c = 0; c < raidPtr->numCol; c++) { 2720 if (raidPtr->Disks[c].status == rf_ds_optimal) { 2721 clabel = raidget_component_label(raidPtr, c); 2722 /* make sure status is noted */ 2723 clabel->status = rf_ds_optimal; 2724 2725 /* note what unit we are configured as */ 2726 clabel->last_unit = raidPtr->raidid; 2727 2728 raidflush_component_label(raidPtr, c); 2729 if (final == RF_FINAL_COMPONENT_UPDATE) { 2730 if (raidPtr->parity_good == RF_RAID_CLEAN) { 2731 raidmarkclean(raidPtr, c); 2732 } 2733 } 2734 } 2735 /* else we don't touch it.. */ 2736 } 2737 2738 for( c = 0; c < raidPtr->numSpare ; c++) { 2739 sparecol = raidPtr->numCol + c; 2740 /* Need to ensure that the reconstruct actually completed! */ 2741 if (raidPtr->Disks[sparecol].status == rf_ds_used_spare) { 2742 /* 2743 2744 we claim this disk is "optimal" if it's 2745 rf_ds_used_spare, as that means it should be 2746 directly substitutable for the disk it replaced. 2747 We note that too... 2748 2749 */ 2750 2751 for(j=0;j<raidPtr->numCol;j++) { 2752 if (raidPtr->Disks[j].spareCol == sparecol) { 2753 scol = j; 2754 break; 2755 } 2756 } 2757 2758 /* XXX shouldn't *really* need this... */ 2759 clabel = raidget_component_label(raidPtr, sparecol); 2760 /* make sure status is noted */ 2761 2762 raid_init_component_label(raidPtr, clabel); 2763 2764 clabel->column = scol; 2765 clabel->status = rf_ds_optimal; 2766 clabel->last_unit = raidPtr->raidid; 2767 2768 raidflush_component_label(raidPtr, sparecol); 2769 if (final == RF_FINAL_COMPONENT_UPDATE) { 2770 if (raidPtr->parity_good == RF_RAID_CLEAN) { 2771 raidmarkclean(raidPtr, sparecol); 2772 } 2773 } 2774 } 2775 } 2776 } 2777 2778 void 2779 rf_close_component(RF_Raid_t *raidPtr, struct vnode *vp, int auto_configured) 2780 { 2781 2782 if (vp != NULL) { 2783 if (auto_configured == 1) { 2784 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 2785 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED); 2786 vput(vp); 2787 2788 } else { 2789 (void) vn_close(vp, FREAD | FWRITE, curlwp->l_cred); 2790 } 2791 } 2792 } 2793 2794 2795 void 2796 rf_UnconfigureVnodes(RF_Raid_t *raidPtr) 2797 { 2798 int r,c; 2799 struct vnode *vp; 2800 int acd; 2801 2802 2803 /* We take this opportunity to close the vnodes like we should.. */ 2804 2805 for (c = 0; c < raidPtr->numCol; c++) { 2806 vp = raidPtr->raid_cinfo[c].ci_vp; 2807 acd = raidPtr->Disks[c].auto_configured; 2808 rf_close_component(raidPtr, vp, acd); 2809 raidPtr->raid_cinfo[c].ci_vp = NULL; 2810 raidPtr->Disks[c].auto_configured = 0; 2811 } 2812 2813 for (r = 0; r < raidPtr->numSpare; r++) { 2814 vp = raidPtr->raid_cinfo[raidPtr->numCol + r].ci_vp; 2815 acd = raidPtr->Disks[raidPtr->numCol + r].auto_configured; 2816 rf_close_component(raidPtr, vp, acd); 2817 raidPtr->raid_cinfo[raidPtr->numCol + r].ci_vp = NULL; 2818 raidPtr->Disks[raidPtr->numCol + r].auto_configured = 0; 2819 } 2820 } 2821 2822 2823 void 2824 rf_ReconThread(struct rf_recon_req *req) 2825 { 2826 int s; 2827 RF_Raid_t *raidPtr; 2828 2829 s = splbio(); 2830 raidPtr = (RF_Raid_t *) req->raidPtr; 2831 raidPtr->recon_in_progress = 1; 2832 2833 rf_FailDisk((RF_Raid_t *) req->raidPtr, req->col, 2834 ((req->flags & RF_FDFLAGS_RECON) ? 1 : 0)); 2835 2836 RF_Free(req, sizeof(*req)); 2837 2838 raidPtr->recon_in_progress = 0; 2839 splx(s); 2840 2841 /* That's all... */ 2842 kthread_exit(0); /* does not return */ 2843 } 2844 2845 void 2846 rf_RewriteParityThread(RF_Raid_t *raidPtr) 2847 { 2848 int retcode; 2849 int s; 2850 2851 raidPtr->parity_rewrite_stripes_done = 0; 2852 raidPtr->parity_rewrite_in_progress = 1; 2853 s = splbio(); 2854 retcode = rf_RewriteParity(raidPtr); 2855 splx(s); 2856 if (retcode) { 2857 printf("raid%d: Error re-writing parity!\n",raidPtr->raidid); 2858 } else { 2859 /* set the clean bit! If we shutdown correctly, 2860 the clean bit on each component label will get 2861 set */ 2862 raidPtr->parity_good = RF_RAID_CLEAN; 2863 } 2864 raidPtr->parity_rewrite_in_progress = 0; 2865 2866 /* Anyone waiting for us to stop? If so, inform them... */ 2867 if (raidPtr->waitShutdown) { 2868 wakeup(&raidPtr->parity_rewrite_in_progress); 2869 } 2870 2871 /* That's all... */ 2872 kthread_exit(0); /* does not return */ 2873 } 2874 2875 2876 void 2877 rf_CopybackThread(RF_Raid_t *raidPtr) 2878 { 2879 int s; 2880 2881 raidPtr->copyback_in_progress = 1; 2882 s = splbio(); 2883 rf_CopybackReconstructedData(raidPtr); 2884 splx(s); 2885 raidPtr->copyback_in_progress = 0; 2886 2887 /* That's all... */ 2888 kthread_exit(0); /* does not return */ 2889 } 2890 2891 2892 void 2893 rf_ReconstructInPlaceThread(struct rf_recon_req *req) 2894 { 2895 int s; 2896 RF_Raid_t *raidPtr; 2897 2898 s = splbio(); 2899 raidPtr = req->raidPtr; 2900 raidPtr->recon_in_progress = 1; 2901 rf_ReconstructInPlace(raidPtr, req->col); 2902 RF_Free(req, sizeof(*req)); 2903 raidPtr->recon_in_progress = 0; 2904 splx(s); 2905 2906 /* That's all... */ 2907 kthread_exit(0); /* does not return */ 2908 } 2909 2910 static RF_AutoConfig_t * 2911 rf_get_component(RF_AutoConfig_t *ac_list, dev_t dev, struct vnode *vp, 2912 const char *cname, RF_SectorCount_t size) 2913 { 2914 int good_one = 0; 2915 RF_ComponentLabel_t *clabel; 2916 RF_AutoConfig_t *ac; 2917 2918 clabel = malloc(sizeof(RF_ComponentLabel_t), M_RAIDFRAME, M_NOWAIT); 2919 if (clabel == NULL) { 2920 oomem: 2921 while(ac_list) { 2922 ac = ac_list; 2923 if (ac->clabel) 2924 free(ac->clabel, M_RAIDFRAME); 2925 ac_list = ac_list->next; 2926 free(ac, M_RAIDFRAME); 2927 } 2928 printf("RAID auto config: out of memory!\n"); 2929 return NULL; /* XXX probably should panic? */ 2930 } 2931 2932 if (!raidread_component_label(dev, vp, clabel)) { 2933 /* Got the label. Does it look reasonable? */ 2934 if (rf_reasonable_label(clabel) && 2935 (clabel->partitionSize <= size)) { 2936 #ifdef DEBUG 2937 printf("Component on: %s: %llu\n", 2938 cname, (unsigned long long)size); 2939 rf_print_component_label(clabel); 2940 #endif 2941 /* if it's reasonable, add it, else ignore it. */ 2942 ac = malloc(sizeof(RF_AutoConfig_t), M_RAIDFRAME, 2943 M_NOWAIT); 2944 if (ac == NULL) { 2945 free(clabel, M_RAIDFRAME); 2946 goto oomem; 2947 } 2948 strlcpy(ac->devname, cname, sizeof(ac->devname)); 2949 ac->dev = dev; 2950 ac->vp = vp; 2951 ac->clabel = clabel; 2952 ac->next = ac_list; 2953 ac_list = ac; 2954 good_one = 1; 2955 } 2956 } 2957 if (!good_one) { 2958 /* cleanup */ 2959 free(clabel, M_RAIDFRAME); 2960 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 2961 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED); 2962 vput(vp); 2963 } 2964 return ac_list; 2965 } 2966 2967 RF_AutoConfig_t * 2968 rf_find_raid_components(void) 2969 { 2970 struct vnode *vp; 2971 struct disklabel label; 2972 device_t dv; 2973 deviter_t di; 2974 dev_t dev; 2975 int bmajor, bminor, wedge; 2976 int error; 2977 int i; 2978 RF_AutoConfig_t *ac_list; 2979 2980 2981 /* initialize the AutoConfig list */ 2982 ac_list = NULL; 2983 2984 /* we begin by trolling through *all* the devices on the system */ 2985 2986 for (dv = deviter_first(&di, DEVITER_F_ROOT_FIRST); dv != NULL; 2987 dv = deviter_next(&di)) { 2988 2989 /* we are only interested in disks... */ 2990 if (device_class(dv) != DV_DISK) 2991 continue; 2992 2993 /* we don't care about floppies... */ 2994 if (device_is_a(dv, "fd")) { 2995 continue; 2996 } 2997 2998 /* we don't care about CD's... */ 2999 if (device_is_a(dv, "cd")) { 3000 continue; 3001 } 3002 3003 /* we don't care about md's... */ 3004 if (device_is_a(dv, "md")) { 3005 continue; 3006 } 3007 3008 /* hdfd is the Atari/Hades floppy driver */ 3009 if (device_is_a(dv, "hdfd")) { 3010 continue; 3011 } 3012 3013 /* fdisa is the Atari/Milan floppy driver */ 3014 if (device_is_a(dv, "fdisa")) { 3015 continue; 3016 } 3017 3018 /* need to find the device_name_to_block_device_major stuff */ 3019 bmajor = devsw_name2blk(device_xname(dv), NULL, 0); 3020 3021 /* get a vnode for the raw partition of this disk */ 3022 3023 wedge = device_is_a(dv, "dk"); 3024 bminor = minor(device_unit(dv)); 3025 dev = wedge ? makedev(bmajor, bminor) : 3026 MAKEDISKDEV(bmajor, bminor, RAW_PART); 3027 if (bdevvp(dev, &vp)) 3028 panic("RAID can't alloc vnode"); 3029 3030 error = VOP_OPEN(vp, FREAD, NOCRED); 3031 3032 if (error) { 3033 /* "Who cares." Continue looking 3034 for something that exists*/ 3035 vput(vp); 3036 continue; 3037 } 3038 3039 if (wedge) { 3040 struct dkwedge_info dkw; 3041 error = VOP_IOCTL(vp, DIOCGWEDGEINFO, &dkw, FREAD, 3042 NOCRED); 3043 if (error) { 3044 printf("RAIDframe: can't get wedge info for " 3045 "dev %s (%d)\n", device_xname(dv), error); 3046 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 3047 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED); 3048 vput(vp); 3049 continue; 3050 } 3051 3052 if (strcmp(dkw.dkw_ptype, DKW_PTYPE_RAIDFRAME) != 0) { 3053 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 3054 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED); 3055 vput(vp); 3056 continue; 3057 } 3058 3059 ac_list = rf_get_component(ac_list, dev, vp, 3060 device_xname(dv), dkw.dkw_size); 3061 continue; 3062 } 3063 3064 /* Ok, the disk exists. Go get the disklabel. */ 3065 error = VOP_IOCTL(vp, DIOCGDINFO, &label, FREAD, NOCRED); 3066 if (error) { 3067 /* 3068 * XXX can't happen - open() would 3069 * have errored out (or faked up one) 3070 */ 3071 if (error != ENOTTY) 3072 printf("RAIDframe: can't get label for dev " 3073 "%s (%d)\n", device_xname(dv), error); 3074 } 3075 3076 /* don't need this any more. We'll allocate it again 3077 a little later if we really do... */ 3078 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 3079 VOP_CLOSE(vp, FREAD | FWRITE, NOCRED); 3080 vput(vp); 3081 3082 if (error) 3083 continue; 3084 3085 for (i = 0; i < label.d_npartitions; i++) { 3086 char cname[sizeof(ac_list->devname)]; 3087 3088 /* We only support partitions marked as RAID */ 3089 if (label.d_partitions[i].p_fstype != FS_RAID) 3090 continue; 3091 3092 dev = MAKEDISKDEV(bmajor, device_unit(dv), i); 3093 if (bdevvp(dev, &vp)) 3094 panic("RAID can't alloc vnode"); 3095 3096 error = VOP_OPEN(vp, FREAD, NOCRED); 3097 if (error) { 3098 /* Whatever... */ 3099 vput(vp); 3100 continue; 3101 } 3102 snprintf(cname, sizeof(cname), "%s%c", 3103 device_xname(dv), 'a' + i); 3104 ac_list = rf_get_component(ac_list, dev, vp, cname, 3105 label.d_partitions[i].p_size); 3106 } 3107 } 3108 deviter_release(&di); 3109 return ac_list; 3110 } 3111 3112 3113 static int 3114 rf_reasonable_label(RF_ComponentLabel_t *clabel) 3115 { 3116 3117 if (((clabel->version==RF_COMPONENT_LABEL_VERSION_1) || 3118 (clabel->version==RF_COMPONENT_LABEL_VERSION)) && 3119 ((clabel->clean == RF_RAID_CLEAN) || 3120 (clabel->clean == RF_RAID_DIRTY)) && 3121 clabel->row >=0 && 3122 clabel->column >= 0 && 3123 clabel->num_rows > 0 && 3124 clabel->num_columns > 0 && 3125 clabel->row < clabel->num_rows && 3126 clabel->column < clabel->num_columns && 3127 clabel->blockSize > 0 && 3128 clabel->numBlocks > 0) { 3129 /* label looks reasonable enough... */ 3130 return(1); 3131 } 3132 return(0); 3133 } 3134 3135 3136 #ifdef DEBUG 3137 void 3138 rf_print_component_label(RF_ComponentLabel_t *clabel) 3139 { 3140 uint64_t numBlocks = clabel->numBlocks; 3141 3142 numBlocks |= (uint64_t)clabel->numBlocksHi << 32; 3143 3144 printf(" Row: %d Column: %d Num Rows: %d Num Columns: %d\n", 3145 clabel->row, clabel->column, 3146 clabel->num_rows, clabel->num_columns); 3147 printf(" Version: %d Serial Number: %d Mod Counter: %d\n", 3148 clabel->version, clabel->serial_number, 3149 clabel->mod_counter); 3150 printf(" Clean: %s Status: %d\n", 3151 clabel->clean ? "Yes" : "No", clabel->status); 3152 printf(" sectPerSU: %d SUsPerPU: %d SUsPerRU: %d\n", 3153 clabel->sectPerSU, clabel->SUsPerPU, clabel->SUsPerRU); 3154 printf(" RAID Level: %c blocksize: %d numBlocks: %"PRIu64"\n", 3155 (char) clabel->parityConfig, clabel->blockSize, numBlocks); 3156 printf(" Autoconfig: %s\n", clabel->autoconfigure ? "Yes" : "No"); 3157 printf(" Contains root partition: %s\n", 3158 clabel->root_partition ? "Yes" : "No"); 3159 printf(" Last configured as: raid%d\n", clabel->last_unit); 3160 #if 0 3161 printf(" Config order: %d\n", clabel->config_order); 3162 #endif 3163 3164 } 3165 #endif 3166 3167 RF_ConfigSet_t * 3168 rf_create_auto_sets(RF_AutoConfig_t *ac_list) 3169 { 3170 RF_AutoConfig_t *ac; 3171 RF_ConfigSet_t *config_sets; 3172 RF_ConfigSet_t *cset; 3173 RF_AutoConfig_t *ac_next; 3174 3175 3176 config_sets = NULL; 3177 3178 /* Go through the AutoConfig list, and figure out which components 3179 belong to what sets. */ 3180 ac = ac_list; 3181 while(ac!=NULL) { 3182 /* we're going to putz with ac->next, so save it here 3183 for use at the end of the loop */ 3184 ac_next = ac->next; 3185 3186 if (config_sets == NULL) { 3187 /* will need at least this one... */ 3188 config_sets = (RF_ConfigSet_t *) 3189 malloc(sizeof(RF_ConfigSet_t), 3190 M_RAIDFRAME, M_NOWAIT); 3191 if (config_sets == NULL) { 3192 panic("rf_create_auto_sets: No memory!"); 3193 } 3194 /* this one is easy :) */ 3195 config_sets->ac = ac; 3196 config_sets->next = NULL; 3197 config_sets->rootable = 0; 3198 ac->next = NULL; 3199 } else { 3200 /* which set does this component fit into? */ 3201 cset = config_sets; 3202 while(cset!=NULL) { 3203 if (rf_does_it_fit(cset, ac)) { 3204 /* looks like it matches... */ 3205 ac->next = cset->ac; 3206 cset->ac = ac; 3207 break; 3208 } 3209 cset = cset->next; 3210 } 3211 if (cset==NULL) { 3212 /* didn't find a match above... new set..*/ 3213 cset = (RF_ConfigSet_t *) 3214 malloc(sizeof(RF_ConfigSet_t), 3215 M_RAIDFRAME, M_NOWAIT); 3216 if (cset == NULL) { 3217 panic("rf_create_auto_sets: No memory!"); 3218 } 3219 cset->ac = ac; 3220 ac->next = NULL; 3221 cset->next = config_sets; 3222 cset->rootable = 0; 3223 config_sets = cset; 3224 } 3225 } 3226 ac = ac_next; 3227 } 3228 3229 3230 return(config_sets); 3231 } 3232 3233 static int 3234 rf_does_it_fit(RF_ConfigSet_t *cset, RF_AutoConfig_t *ac) 3235 { 3236 RF_ComponentLabel_t *clabel1, *clabel2; 3237 3238 /* If this one matches the *first* one in the set, that's good 3239 enough, since the other members of the set would have been 3240 through here too... */ 3241 /* note that we are not checking partitionSize here.. 3242 3243 Note that we are also not checking the mod_counters here. 3244 If everything else matches execpt the mod_counter, that's 3245 good enough for this test. We will deal with the mod_counters 3246 a little later in the autoconfiguration process. 3247 3248 (clabel1->mod_counter == clabel2->mod_counter) && 3249 3250 The reason we don't check for this is that failed disks 3251 will have lower modification counts. If those disks are 3252 not added to the set they used to belong to, then they will 3253 form their own set, which may result in 2 different sets, 3254 for example, competing to be configured at raid0, and 3255 perhaps competing to be the root filesystem set. If the 3256 wrong ones get configured, or both attempt to become /, 3257 weird behaviour and or serious lossage will occur. Thus we 3258 need to bring them into the fold here, and kick them out at 3259 a later point. 3260 3261 */ 3262 3263 clabel1 = cset->ac->clabel; 3264 clabel2 = ac->clabel; 3265 if ((clabel1->version == clabel2->version) && 3266 (clabel1->serial_number == clabel2->serial_number) && 3267 (clabel1->num_rows == clabel2->num_rows) && 3268 (clabel1->num_columns == clabel2->num_columns) && 3269 (clabel1->sectPerSU == clabel2->sectPerSU) && 3270 (clabel1->SUsPerPU == clabel2->SUsPerPU) && 3271 (clabel1->SUsPerRU == clabel2->SUsPerRU) && 3272 (clabel1->parityConfig == clabel2->parityConfig) && 3273 (clabel1->maxOutstanding == clabel2->maxOutstanding) && 3274 (clabel1->blockSize == clabel2->blockSize) && 3275 (clabel1->numBlocks == clabel2->numBlocks) && 3276 (clabel1->numBlocksHi == clabel2->numBlocksHi) && 3277 (clabel1->autoconfigure == clabel2->autoconfigure) && 3278 (clabel1->root_partition == clabel2->root_partition) && 3279 (clabel1->last_unit == clabel2->last_unit) && 3280 (clabel1->config_order == clabel2->config_order)) { 3281 /* if it get's here, it almost *has* to be a match */ 3282 } else { 3283 /* it's not consistent with somebody in the set.. 3284 punt */ 3285 return(0); 3286 } 3287 /* all was fine.. it must fit... */ 3288 return(1); 3289 } 3290 3291 int 3292 rf_have_enough_components(RF_ConfigSet_t *cset) 3293 { 3294 RF_AutoConfig_t *ac; 3295 RF_AutoConfig_t *auto_config; 3296 RF_ComponentLabel_t *clabel; 3297 int c; 3298 int num_cols; 3299 int num_missing; 3300 int mod_counter; 3301 int mod_counter_found; 3302 int even_pair_failed; 3303 char parity_type; 3304 3305 3306 /* check to see that we have enough 'live' components 3307 of this set. If so, we can configure it if necessary */ 3308 3309 num_cols = cset->ac->clabel->num_columns; 3310 parity_type = cset->ac->clabel->parityConfig; 3311 3312 /* XXX Check for duplicate components!?!?!? */ 3313 3314 /* Determine what the mod_counter is supposed to be for this set. */ 3315 3316 mod_counter_found = 0; 3317 mod_counter = 0; 3318 ac = cset->ac; 3319 while(ac!=NULL) { 3320 if (mod_counter_found==0) { 3321 mod_counter = ac->clabel->mod_counter; 3322 mod_counter_found = 1; 3323 } else { 3324 if (ac->clabel->mod_counter > mod_counter) { 3325 mod_counter = ac->clabel->mod_counter; 3326 } 3327 } 3328 ac = ac->next; 3329 } 3330 3331 num_missing = 0; 3332 auto_config = cset->ac; 3333 3334 even_pair_failed = 0; 3335 for(c=0; c<num_cols; c++) { 3336 ac = auto_config; 3337 while(ac!=NULL) { 3338 if ((ac->clabel->column == c) && 3339 (ac->clabel->mod_counter == mod_counter)) { 3340 /* it's this one... */ 3341 #ifdef DEBUG 3342 printf("Found: %s at %d\n", 3343 ac->devname,c); 3344 #endif 3345 break; 3346 } 3347 ac=ac->next; 3348 } 3349 if (ac==NULL) { 3350 /* Didn't find one here! */ 3351 /* special case for RAID 1, especially 3352 where there are more than 2 3353 components (where RAIDframe treats 3354 things a little differently :( ) */ 3355 if (parity_type == '1') { 3356 if (c%2 == 0) { /* even component */ 3357 even_pair_failed = 1; 3358 } else { /* odd component. If 3359 we're failed, and 3360 so is the even 3361 component, it's 3362 "Good Night, Charlie" */ 3363 if (even_pair_failed == 1) { 3364 return(0); 3365 } 3366 } 3367 } else { 3368 /* normal accounting */ 3369 num_missing++; 3370 } 3371 } 3372 if ((parity_type == '1') && (c%2 == 1)) { 3373 /* Just did an even component, and we didn't 3374 bail.. reset the even_pair_failed flag, 3375 and go on to the next component.... */ 3376 even_pair_failed = 0; 3377 } 3378 } 3379 3380 clabel = cset->ac->clabel; 3381 3382 if (((clabel->parityConfig == '0') && (num_missing > 0)) || 3383 ((clabel->parityConfig == '4') && (num_missing > 1)) || 3384 ((clabel->parityConfig == '5') && (num_missing > 1))) { 3385 /* XXX this needs to be made *much* more general */ 3386 /* Too many failures */ 3387 return(0); 3388 } 3389 /* otherwise, all is well, and we've got enough to take a kick 3390 at autoconfiguring this set */ 3391 return(1); 3392 } 3393 3394 void 3395 rf_create_configuration(RF_AutoConfig_t *ac, RF_Config_t *config, 3396 RF_Raid_t *raidPtr) 3397 { 3398 RF_ComponentLabel_t *clabel; 3399 int i; 3400 3401 clabel = ac->clabel; 3402 3403 /* 1. Fill in the common stuff */ 3404 config->numRow = clabel->num_rows = 1; 3405 config->numCol = clabel->num_columns; 3406 config->numSpare = 0; /* XXX should this be set here? */ 3407 config->sectPerSU = clabel->sectPerSU; 3408 config->SUsPerPU = clabel->SUsPerPU; 3409 config->SUsPerRU = clabel->SUsPerRU; 3410 config->parityConfig = clabel->parityConfig; 3411 /* XXX... */ 3412 strcpy(config->diskQueueType,"fifo"); 3413 config->maxOutstandingDiskReqs = clabel->maxOutstanding; 3414 config->layoutSpecificSize = 0; /* XXX ?? */ 3415 3416 while(ac!=NULL) { 3417 /* row/col values will be in range due to the checks 3418 in reasonable_label() */ 3419 strcpy(config->devnames[0][ac->clabel->column], 3420 ac->devname); 3421 ac = ac->next; 3422 } 3423 3424 for(i=0;i<RF_MAXDBGV;i++) { 3425 config->debugVars[i][0] = 0; 3426 } 3427 } 3428 3429 int 3430 rf_set_autoconfig(RF_Raid_t *raidPtr, int new_value) 3431 { 3432 RF_ComponentLabel_t *clabel; 3433 int column; 3434 int sparecol; 3435 3436 raidPtr->autoconfigure = new_value; 3437 3438 for(column=0; column<raidPtr->numCol; column++) { 3439 if (raidPtr->Disks[column].status == rf_ds_optimal) { 3440 clabel = raidget_component_label(raidPtr, column); 3441 clabel->autoconfigure = new_value; 3442 raidflush_component_label(raidPtr, column); 3443 } 3444 } 3445 for(column = 0; column < raidPtr->numSpare ; column++) { 3446 sparecol = raidPtr->numCol + column; 3447 if (raidPtr->Disks[sparecol].status == rf_ds_used_spare) { 3448 clabel = raidget_component_label(raidPtr, sparecol); 3449 clabel->autoconfigure = new_value; 3450 raidflush_component_label(raidPtr, sparecol); 3451 } 3452 } 3453 return(new_value); 3454 } 3455 3456 int 3457 rf_set_rootpartition(RF_Raid_t *raidPtr, int new_value) 3458 { 3459 RF_ComponentLabel_t *clabel; 3460 int column; 3461 int sparecol; 3462 3463 raidPtr->root_partition = new_value; 3464 for(column=0; column<raidPtr->numCol; column++) { 3465 if (raidPtr->Disks[column].status == rf_ds_optimal) { 3466 clabel = raidget_component_label(raidPtr, column); 3467 clabel->root_partition = new_value; 3468 raidflush_component_label(raidPtr, column); 3469 } 3470 } 3471 for(column = 0; column < raidPtr->numSpare ; column++) { 3472 sparecol = raidPtr->numCol + column; 3473 if (raidPtr->Disks[sparecol].status == rf_ds_used_spare) { 3474 clabel = raidget_component_label(raidPtr, sparecol); 3475 clabel->root_partition = new_value; 3476 raidflush_component_label(raidPtr, sparecol); 3477 } 3478 } 3479 return(new_value); 3480 } 3481 3482 void 3483 rf_release_all_vps(RF_ConfigSet_t *cset) 3484 { 3485 RF_AutoConfig_t *ac; 3486 3487 ac = cset->ac; 3488 while(ac!=NULL) { 3489 /* Close the vp, and give it back */ 3490 if (ac->vp) { 3491 vn_lock(ac->vp, LK_EXCLUSIVE | LK_RETRY); 3492 VOP_CLOSE(ac->vp, FREAD, NOCRED); 3493 vput(ac->vp); 3494 ac->vp = NULL; 3495 } 3496 ac = ac->next; 3497 } 3498 } 3499 3500 3501 void 3502 rf_cleanup_config_set(RF_ConfigSet_t *cset) 3503 { 3504 RF_AutoConfig_t *ac; 3505 RF_AutoConfig_t *next_ac; 3506 3507 ac = cset->ac; 3508 while(ac!=NULL) { 3509 next_ac = ac->next; 3510 /* nuke the label */ 3511 free(ac->clabel, M_RAIDFRAME); 3512 /* cleanup the config structure */ 3513 free(ac, M_RAIDFRAME); 3514 /* "next.." */ 3515 ac = next_ac; 3516 } 3517 /* and, finally, nuke the config set */ 3518 free(cset, M_RAIDFRAME); 3519 } 3520 3521 3522 void 3523 raid_init_component_label(RF_Raid_t *raidPtr, RF_ComponentLabel_t *clabel) 3524 { 3525 /* current version number */ 3526 clabel->version = RF_COMPONENT_LABEL_VERSION; 3527 clabel->serial_number = raidPtr->serial_number; 3528 clabel->mod_counter = raidPtr->mod_counter; 3529 3530 clabel->num_rows = 1; 3531 clabel->num_columns = raidPtr->numCol; 3532 clabel->clean = RF_RAID_DIRTY; /* not clean */ 3533 clabel->status = rf_ds_optimal; /* "It's good!" */ 3534 3535 clabel->sectPerSU = raidPtr->Layout.sectorsPerStripeUnit; 3536 clabel->SUsPerPU = raidPtr->Layout.SUsPerPU; 3537 clabel->SUsPerRU = raidPtr->Layout.SUsPerRU; 3538 3539 clabel->blockSize = raidPtr->bytesPerSector; 3540 clabel->numBlocks = raidPtr->sectorsPerDisk; 3541 clabel->numBlocksHi = raidPtr->sectorsPerDisk >> 32; 3542 3543 /* XXX not portable */ 3544 clabel->parityConfig = raidPtr->Layout.map->parityConfig; 3545 clabel->maxOutstanding = raidPtr->maxOutstanding; 3546 clabel->autoconfigure = raidPtr->autoconfigure; 3547 clabel->root_partition = raidPtr->root_partition; 3548 clabel->last_unit = raidPtr->raidid; 3549 clabel->config_order = raidPtr->config_order; 3550 3551 #ifndef RF_NO_PARITY_MAP 3552 rf_paritymap_init_label(raidPtr->parity_map, clabel); 3553 #endif 3554 } 3555 3556 int 3557 rf_auto_config_set(RF_ConfigSet_t *cset, int *unit) 3558 { 3559 RF_Raid_t *raidPtr; 3560 RF_Config_t *config; 3561 int raidID; 3562 int retcode; 3563 3564 #ifdef DEBUG 3565 printf("RAID autoconfigure\n"); 3566 #endif 3567 3568 retcode = 0; 3569 *unit = -1; 3570 3571 /* 1. Create a config structure */ 3572 3573 config = (RF_Config_t *)malloc(sizeof(RF_Config_t), 3574 M_RAIDFRAME, 3575 M_NOWAIT); 3576 if (config==NULL) { 3577 printf("Out of mem!?!?\n"); 3578 /* XXX do something more intelligent here. */ 3579 return(1); 3580 } 3581 3582 memset(config, 0, sizeof(RF_Config_t)); 3583 3584 /* 3585 2. Figure out what RAID ID this one is supposed to live at 3586 See if we can get the same RAID dev that it was configured 3587 on last time.. 3588 */ 3589 3590 raidID = cset->ac->clabel->last_unit; 3591 if ((raidID < 0) || (raidID >= numraid)) { 3592 /* let's not wander off into lala land. */ 3593 raidID = numraid - 1; 3594 } 3595 if (raidPtrs[raidID]->valid != 0) { 3596 3597 /* 3598 Nope... Go looking for an alternative... 3599 Start high so we don't immediately use raid0 if that's 3600 not taken. 3601 */ 3602 3603 for(raidID = numraid - 1; raidID >= 0; raidID--) { 3604 if (raidPtrs[raidID]->valid == 0) { 3605 /* can use this one! */ 3606 break; 3607 } 3608 } 3609 } 3610 3611 if (raidID < 0) { 3612 /* punt... */ 3613 printf("Unable to auto configure this set!\n"); 3614 printf("(Out of RAID devs!)\n"); 3615 free(config, M_RAIDFRAME); 3616 return(1); 3617 } 3618 3619 #ifdef DEBUG 3620 printf("Configuring raid%d:\n",raidID); 3621 #endif 3622 3623 raidPtr = raidPtrs[raidID]; 3624 3625 /* XXX all this stuff should be done SOMEWHERE ELSE! */ 3626 raidPtr->raidid = raidID; 3627 raidPtr->openings = RAIDOUTSTANDING; 3628 3629 /* 3. Build the configuration structure */ 3630 rf_create_configuration(cset->ac, config, raidPtr); 3631 3632 /* 4. Do the configuration */ 3633 retcode = rf_Configure(raidPtr, config, cset->ac); 3634 3635 if (retcode == 0) { 3636 3637 raidinit(raidPtrs[raidID]); 3638 3639 rf_markalldirty(raidPtrs[raidID]); 3640 raidPtrs[raidID]->autoconfigure = 1; /* XXX do this here? */ 3641 if (cset->ac->clabel->root_partition==1) { 3642 /* everything configured just fine. Make a note 3643 that this set is eligible to be root. */ 3644 cset->rootable = 1; 3645 /* XXX do this here? */ 3646 raidPtrs[raidID]->root_partition = 1; 3647 } 3648 } 3649 3650 /* 5. Cleanup */ 3651 free(config, M_RAIDFRAME); 3652 3653 *unit = raidID; 3654 return(retcode); 3655 } 3656 3657 void 3658 rf_disk_unbusy(RF_RaidAccessDesc_t *desc) 3659 { 3660 struct buf *bp; 3661 3662 bp = (struct buf *)desc->bp; 3663 disk_unbusy(&raid_softc[desc->raidPtr->raidid].sc_dkdev, 3664 (bp->b_bcount - bp->b_resid), (bp->b_flags & B_READ)); 3665 } 3666 3667 void 3668 rf_pool_init(struct pool *p, size_t size, const char *w_chan, 3669 size_t xmin, size_t xmax) 3670 { 3671 pool_init(p, size, 0, 0, 0, w_chan, NULL, IPL_BIO); 3672 pool_sethiwat(p, xmax); 3673 pool_prime(p, xmin); 3674 pool_setlowat(p, xmin); 3675 } 3676 3677 /* 3678 * rf_buf_queue_check(int raidid) -- looks into the buf_queue to see 3679 * if there is IO pending and if that IO could possibly be done for a 3680 * given RAID set. Returns 0 if IO is waiting and can be done, 1 3681 * otherwise. 3682 * 3683 */ 3684 3685 int 3686 rf_buf_queue_check(int raidid) 3687 { 3688 if ((bufq_peek(raid_softc[raidid].buf_queue) != NULL) && 3689 raidPtrs[raidid]->openings > 0) { 3690 /* there is work to do */ 3691 return 0; 3692 } 3693 /* default is nothing to do */ 3694 return 1; 3695 } 3696 3697 int 3698 rf_getdisksize(struct vnode *vp, struct lwp *l, RF_RaidDisk_t *diskPtr) 3699 { 3700 uint64_t numsecs; 3701 unsigned secsize; 3702 int error; 3703 3704 error = getdisksize(vp, &numsecs, &secsize); 3705 if (error == 0) { 3706 diskPtr->blockSize = secsize; 3707 diskPtr->numBlocks = numsecs - rf_protectedSectors; 3708 diskPtr->partitionSize = numsecs; 3709 return 0; 3710 } 3711 return error; 3712 } 3713 3714 static int 3715 raid_match(device_t self, cfdata_t cfdata, void *aux) 3716 { 3717 return 1; 3718 } 3719 3720 static void 3721 raid_attach(device_t parent, device_t self, void *aux) 3722 { 3723 3724 } 3725 3726 3727 static int 3728 raid_detach(device_t self, int flags) 3729 { 3730 int error; 3731 struct raid_softc *rs = &raid_softc[device_unit(self)]; 3732 3733 if ((error = raidlock(rs)) != 0) 3734 return (error); 3735 3736 error = raid_detach_unlocked(rs); 3737 3738 raidunlock(rs); 3739 3740 return error; 3741 } 3742 3743 static void 3744 rf_set_properties(struct raid_softc *rs, RF_Raid_t *raidPtr) 3745 { 3746 prop_dictionary_t disk_info, odisk_info, geom; 3747 disk_info = prop_dictionary_create(); 3748 geom = prop_dictionary_create(); 3749 prop_dictionary_set_uint64(geom, "sectors-per-unit", 3750 raidPtr->totalSectors); 3751 prop_dictionary_set_uint32(geom, "sector-size", 3752 raidPtr->bytesPerSector); 3753 3754 prop_dictionary_set_uint16(geom, "sectors-per-track", 3755 raidPtr->Layout.dataSectorsPerStripe); 3756 prop_dictionary_set_uint16(geom, "tracks-per-cylinder", 3757 4 * raidPtr->numCol); 3758 3759 prop_dictionary_set_uint64(geom, "cylinders-per-unit", 3760 raidPtr->totalSectors / (raidPtr->Layout.dataSectorsPerStripe * 3761 (4 * raidPtr->numCol))); 3762 3763 prop_dictionary_set(disk_info, "geometry", geom); 3764 prop_object_release(geom); 3765 prop_dictionary_set(device_properties(rs->sc_dev), 3766 "disk-info", disk_info); 3767 odisk_info = rs->sc_dkdev.dk_info; 3768 rs->sc_dkdev.dk_info = disk_info; 3769 if (odisk_info) 3770 prop_object_release(odisk_info); 3771 } 3772 3773 /* 3774 * Implement forwarding of the DIOCCACHESYNC ioctl to each of the components. 3775 * We end up returning whatever error was returned by the first cache flush 3776 * that fails. 3777 */ 3778 3779 int 3780 rf_sync_component_caches(RF_Raid_t *raidPtr) 3781 { 3782 int c, sparecol; 3783 int e,error; 3784 int force = 1; 3785 3786 error = 0; 3787 for (c = 0; c < raidPtr->numCol; c++) { 3788 if (raidPtr->Disks[c].status == rf_ds_optimal) { 3789 e = VOP_IOCTL(raidPtr->raid_cinfo[c].ci_vp, DIOCCACHESYNC, 3790 &force, FWRITE, NOCRED); 3791 if (e) { 3792 if (e != ENODEV) 3793 printf("raid%d: cache flush to component %s failed.\n", 3794 raidPtr->raidid, raidPtr->Disks[c].devname); 3795 if (error == 0) { 3796 error = e; 3797 } 3798 } 3799 } 3800 } 3801 3802 for( c = 0; c < raidPtr->numSpare ; c++) { 3803 sparecol = raidPtr->numCol + c; 3804 /* Need to ensure that the reconstruct actually completed! */ 3805 if (raidPtr->Disks[sparecol].status == rf_ds_used_spare) { 3806 e = VOP_IOCTL(raidPtr->raid_cinfo[sparecol].ci_vp, 3807 DIOCCACHESYNC, &force, FWRITE, NOCRED); 3808 if (e) { 3809 if (e != ENODEV) 3810 printf("raid%d: cache flush to component %s failed.\n", 3811 raidPtr->raidid, raidPtr->Disks[sparecol].devname); 3812 if (error == 0) { 3813 error = e; 3814 } 3815 } 3816 } 3817 } 3818 return error; 3819 } 3820
Indexes created Tue Sep 30 17:09:57 GMT 2025