lustre/obdclass/class_obd.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * GPL HEADER START
   5  *
   6  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 only,
  10  * as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License version 2 for more details (a copy is included
  16  * in the LICENSE file that accompanied this code).
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * version 2 along with this program; If not, see
  20  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  21  *
  22  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  23  * CA 95054 USA or visit www.sun.com if you need additional information or
  24  * have any questions.
  25  *
  26  * GPL HEADER END
  27  */
  28 /*
  29  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
  30  * Use is subject to license terms.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36
  37 #define DEBUG_SUBSYSTEM S_CLASS
  38 #ifndef EXPORT_SYMTAB
  39 # define EXPORT_SYMTAB
  40 #endif
  41 #ifndef __KERNEL__
  42 # include <liblustre.h>
  43 #else
  44 # include <asm/atomic.h>
  45 #endif
  46
  47 #include <obd_support.h>
  48 #include <obd_class.h>
  49 #include <lnet/lnetctl.h>
  50 #include <lustre_debug.h>
  51 #include <lprocfs_status.h>
  52 #include <lustre/lustre_build_version.h>
  53 #include <libcfs/list.h>
  54 #include "llog_internal.h"
  55
  56 #ifndef __KERNEL__
  57 /* liblustre workaround */
  58 cfs_atomic_t libcfs_kmemory = {0};
  59 #endif
  60
  61 struct obd_device *obd_devs[MAX_OBD_DEVICES];
  62 cfs_list_t obd_types;
  63 cfs_spinlock_t obd_dev_lock = CFS_SPIN_LOCK_UNLOCKED;
  64
  65 #ifndef __KERNEL__
  66 __u64 obd_max_pages = 0;
  67 __u64 obd_max_alloc = 0;
  68 __u64 obd_alloc;
  69 __u64 obd_pages;
  70 #endif
  71
  72 /* The following are visible and mutable through /proc/sys/lustre/. */
  73 unsigned int obd_debug_peer_on_timeout;
  74 unsigned int obd_dump_on_timeout;
  75 unsigned int obd_dump_on_eviction;
  76 unsigned int obd_max_dirty_pages = 256;
  77 unsigned int obd_timeout = OBD_TIMEOUT_DEFAULT;   /* seconds */
  78 unsigned int ldlm_timeout = LDLM_TIMEOUT_DEFAULT; /* seconds */
  79 /* Adaptive timeout defs here instead of ptlrpc module for /proc/sys/ access */
  80 unsigned int at_min = 0;
  81 unsigned int at_max = 600;
  82 unsigned int at_history = 600;
  83 int at_early_margin = 5;
  84 int at_extra = 30;
  85
  86 cfs_atomic_t obd_dirty_pages;
  87 cfs_atomic_t obd_dirty_transit_pages;
  88
  89 static inline void obd_data2conn(struct lustre_handle *conn,
  90                                  struct obd_ioctl_data *data)
  91 {
  92         memset(conn, 0, sizeof *conn);
  93         conn->cookie = data->ioc_cookie;
  94 }
  95
  96 static inline void obd_conn2data(struct obd_ioctl_data *data,
  97                                  struct lustre_handle *conn)
  98 {
  99         data->ioc_cookie = conn->cookie;
 100 }
 101
 102 int class_resolve_dev_name(__u32 len, const char *name)
 103 {
 104         int rc;
 105         int dev;
 106
 107         ENTRY;
 108         if (!len || !name) {
 109                 CERROR("No name passed,!\n");
 110                 GOTO(out, rc = -EINVAL);
 111         }
 112         if (name[len - 1] != 0) {
 113                 CERROR("Name not nul terminated!\n");
 114                 GOTO(out, rc = -EINVAL);
 115         }
 116
 117         CDEBUG(D_IOCTL, "device name %s\n", name);
 118         dev = class_name2dev(name);
 119         if (dev == -1) {
 120                 CDEBUG(D_IOCTL, "No device for name %s!\n", name);
 121                 GOTO(out, rc = -EINVAL);
 122         }
 123
 124         CDEBUG(D_IOCTL, "device name %s, dev %d\n", name, dev);
 125         rc = dev;
 126
 127 out:
 128         RETURN(rc);
 129 }
 130
 131 int class_handle_ioctl(unsigned int cmd, unsigned long arg)
 132 {
 133         char *buf = NULL;
 134         struct obd_ioctl_data *data;
 135         struct libcfs_debug_ioctl_data *debug_data;
 136         struct obd_device *obd = NULL;
 137         int err = 0, len = 0;
 138         ENTRY;
 139
 140         /* only for debugging */
 141         if (cmd == LIBCFS_IOC_DEBUG_MASK) {
 142                 debug_data = (struct libcfs_debug_ioctl_data*)arg;
 143                 libcfs_subsystem_debug = debug_data->subs;
 144                 libcfs_debug = debug_data->debug;
 145                 return 0;
 146         }
 147
 148         CDEBUG(D_IOCTL, "cmd = %x\n", cmd);
 149         if (obd_ioctl_getdata(&buf, &len, (void *)arg)) {
 150                 CERROR("OBD ioctl: data error\n");
 151                 RETURN(-EINVAL);
 152         }
 153         data = (struct obd_ioctl_data *)buf;
 154
 155         switch (cmd) {
 156         case OBD_IOC_PROCESS_CFG: {
 157                 struct lustre_cfg *lcfg;
 158
 159                 if (!data->ioc_plen1 || !data->ioc_pbuf1) {
 160                         CERROR("No config buffer passed!\n");
 161                         GOTO(out, err = -EINVAL);
 162                 }
 163                 OBD_ALLOC(lcfg, data->ioc_plen1);
 164                 if (lcfg == NULL)
 165                         GOTO(out, err = -ENOMEM);
 166                 err = cfs_copy_from_user(lcfg, data->ioc_pbuf1,
 167                                          data->ioc_plen1);
 168                 if (!err)
 169                         err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
 170                 if (!err)
 171                         err = class_process_config(lcfg);
 172
 173                 OBD_FREE(lcfg, data->ioc_plen1);
 174                 GOTO(out, err);
 175         }
 176
 177         case OBD_GET_VERSION:
 178                 if (!data->ioc_inlbuf1) {
 179                         CERROR("No buffer passed in ioctl\n");
 180                         GOTO(out, err = -EINVAL);
 181                 }
 182
 183                 if (strlen(BUILD_VERSION) + 1 > data->ioc_inllen1) {
 184                         CERROR("ioctl buffer too small to hold version\n");
 185                         GOTO(out, err = -EINVAL);
 186                 }
 187
 188                 memcpy(data->ioc_bulk, BUILD_VERSION,
 189                        strlen(BUILD_VERSION) + 1);
 190
 191                 err = obd_ioctl_popdata((void *)arg, data, len);
 192                 if (err)
 193                         err = -EFAULT;
 194                 GOTO(out, err);
 195
 196         case OBD_IOC_NAME2DEV: {
 197                 /* Resolve a device name.  This does not change the
 198                  * currently selected device.
 199                  */
 200                 int dev;
 201
 202                 dev = class_resolve_dev_name(data->ioc_inllen1,
 203                                              data->ioc_inlbuf1);
 204                 data->ioc_dev = dev;
 205                 if (dev < 0)
 206                         GOTO(out, err = -EINVAL);
 207
 208                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 209                 if (err)
 210                         err = -EFAULT;
 211                 GOTO(out, err);
 212         }
 213
 214         case OBD_IOC_UUID2DEV: {
 215                 /* Resolve a device uuid.  This does not change the
 216                  * currently selected device.
 217                  */
 218                 int dev;
 219                 struct obd_uuid uuid;
 220
 221                 if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
 222                         CERROR("No UUID passed!\n");
 223                         GOTO(out, err = -EINVAL);
 224                 }
 225                 if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
 226                         CERROR("UUID not NUL terminated!\n");
 227                         GOTO(out, err = -EINVAL);
 228                 }
 229
 230                 CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
 231                 obd_str2uuid(&uuid, data->ioc_inlbuf1);
 232                 dev = class_uuid2dev(&uuid);
 233                 data->ioc_dev = dev;
 234                 if (dev == -1) {
 235                         CDEBUG(D_IOCTL, "No device for UUID %s!\n",
 236                                data->ioc_inlbuf1);
 237                         GOTO(out, err = -EINVAL);
 238                 }
 239
 240                 CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
 241                        dev);
 242                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 243                 if (err)
 244                         err = -EFAULT;
 245                 GOTO(out, err);
 246         }
 247
 248         case OBD_IOC_CLOSE_UUID: {
 249                 CDEBUG(D_IOCTL, "closing all connections to uuid %s (NOOP)\n",
 250                        data->ioc_inlbuf1);
 251                 GOTO(out, err = 0);
 252         }
 253
 254         case OBD_IOC_GETDEVICE: {
 255                 int     index = data->ioc_count;
 256                 const char *status;
 257                 char    *str;
 258
 259                 if (!data->ioc_inlbuf1) {
 260                         CERROR("No buffer passed in ioctl\n");
 261                         GOTO(out, err = -EINVAL);
 262                 }
 263                 if (data->ioc_inllen1 < 128) {
 264                         CERROR("ioctl buffer too small to hold version\n");
 265                         GOTO(out, err = -EINVAL);
 266                 }
 267
 268                 obd = class_num2obd(index);
 269                 if (!obd)
 270                         GOTO(out, err = -ENOENT);
 271
 272                 status = obd_dev_status(obd);
 273                 str = (char *)data->ioc_bulk;
 274                 snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d",
 275                          (int)index, status, obd->obd_type->typ_name,
 276                          obd->obd_name, obd->obd_uuid.uuid,
 277                          cfs_atomic_read(&obd->obd_refcount));
 278                 err = obd_ioctl_popdata((void *)arg, data, len);
 279
 280                 GOTO(out, err = 0);
 281         }
 282
 283         }
 284
 285         if (data->ioc_dev == OBD_DEV_BY_DEVNAME) {
 286                 if (data->ioc_inllen4 <= 0 || data->ioc_inlbuf4 == NULL)
 287                         GOTO(out, err = -EINVAL);
 288                 if (strnlen(data->ioc_inlbuf4, MAX_OBD_NAME) >= MAX_OBD_NAME)
 289                         GOTO(out, err = -EINVAL);
 290                 obd = class_name2obd(data->ioc_inlbuf4);
 291         } else if (obd_minor_valid(data->ioc_dev)) {
 292                 /* XXX = max allocated minor */
 293                 obd = class_num2obd(data->ioc_dev);
 294         } else {
 295                 CERROR("OBD ioctl: No device\n");
 296                 GOTO(out, err = -EINVAL);
 297         }
 298
 299         if (obd == NULL) {
 300                 CERROR("OBD ioctl : No Device %d\n", data->ioc_dev);
 301                 GOTO(out, err = -EINVAL);
 302         }
 303         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 304
 305         if (!obd->obd_set_up || obd->obd_stopping) {
 306                 CERROR("OBD ioctl: device not setup %d \n", data->ioc_dev);
 307                 GOTO(out, err = -EINVAL);
 308         }
 309
 310         switch(cmd) {
 311         case OBD_IOC_NO_TRANSNO: {
 312                 if (!obd->obd_attached) {
 313                         CERROR("Device %d not attached\n", obd->obd_minor);
 314                         GOTO(out, err = -ENODEV);
 315                 }
 316                 CDEBUG(D_HA, "%s: disabling committed-transno notification\n",
 317                        obd->obd_name);
 318                 obd->obd_no_transno = 1;
 319                 GOTO(out, err = 0);
 320         }
 321
 322         default: {
 323                 err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL);
 324                 if (err)
 325                         GOTO(out, err);
 326
 327                 err = obd_ioctl_popdata((void *)arg, data, len);
 328                 if (err)
 329                         err = -EFAULT;
 330                 GOTO(out, err);
 331         }
 332         }
 333
 334  out:
 335         if (buf)
 336                 obd_ioctl_freedata(buf, len);
 337         RETURN(err);
 338 } /* class_handle_ioctl */
 339
 340
 341
 342 #ifdef __KERNEL__
 343 extern cfs_psdev_t obd_psdev;
 344 #else
 345 void *obd_psdev = NULL;
 346 #endif
 347
 348 EXPORT_SYMBOL(obd_devs);
 349 EXPORT_SYMBOL(obd_debug_peer_on_timeout);
 350 EXPORT_SYMBOL(obd_dump_on_timeout);
 351 EXPORT_SYMBOL(obd_dump_on_eviction);
 352 EXPORT_SYMBOL(obd_timeout);
 353 EXPORT_SYMBOL(ldlm_timeout);
 354 EXPORT_SYMBOL(obd_max_dirty_pages);
 355 EXPORT_SYMBOL(obd_dirty_pages);
 356 EXPORT_SYMBOL(obd_dirty_transit_pages);
 357 EXPORT_SYMBOL(at_min);
 358 EXPORT_SYMBOL(at_max);
 359 EXPORT_SYMBOL(at_extra);
 360 EXPORT_SYMBOL(at_early_margin);
 361 EXPORT_SYMBOL(at_history);
 362 EXPORT_SYMBOL(ptlrpc_put_connection_superhack);
 363
 364 EXPORT_SYMBOL(proc_lustre_root);
 365
 366 EXPORT_SYMBOL(class_register_type);
 367 EXPORT_SYMBOL(class_unregister_type);
 368 EXPORT_SYMBOL(class_get_type);
 369 EXPORT_SYMBOL(class_put_type);
 370 EXPORT_SYMBOL(class_name2obd);
 371 EXPORT_SYMBOL(class_uuid2obd);
 372 EXPORT_SYMBOL(class_find_client_obd);
 373 EXPORT_SYMBOL(class_devices_in_group);
 374 EXPORT_SYMBOL(class_conn2export);
 375 EXPORT_SYMBOL(class_exp2obd);
 376 EXPORT_SYMBOL(class_conn2obd);
 377 EXPORT_SYMBOL(class_exp2cliimp);
 378 EXPORT_SYMBOL(class_conn2cliimp);
 379 EXPORT_SYMBOL(class_disconnect);
 380 EXPORT_SYMBOL(class_num2obd);
 381
 382 /* uuid.c */
 383 EXPORT_SYMBOL(class_uuid_unparse);
 384 EXPORT_SYMBOL(lustre_uuid_to_peer);
 385
 386 EXPORT_SYMBOL(class_handle_hash);
 387 EXPORT_SYMBOL(class_handle_unhash);
 388 EXPORT_SYMBOL(class_handle_hash_back);
 389 EXPORT_SYMBOL(class_handle2object);
 390 EXPORT_SYMBOL(class_handle_free_cb);
 391
 392 /* obd_config.c */
 393 EXPORT_SYMBOL(class_incref);
 394 EXPORT_SYMBOL(class_decref);
 395 EXPORT_SYMBOL(class_get_profile);
 396 EXPORT_SYMBOL(class_del_profile);
 397 EXPORT_SYMBOL(class_del_profiles);
 398 EXPORT_SYMBOL(class_process_config);
 399 EXPORT_SYMBOL(class_process_proc_param);
 400 EXPORT_SYMBOL(class_config_parse_llog);
 401 EXPORT_SYMBOL(class_config_dump_llog);
 402 EXPORT_SYMBOL(class_attach);
 403 EXPORT_SYMBOL(class_setup);
 404 EXPORT_SYMBOL(class_cleanup);
 405 EXPORT_SYMBOL(class_detach);
 406 EXPORT_SYMBOL(class_manual_cleanup);
 407
 408 /* mea.c */
 409 EXPORT_SYMBOL(mea_name2idx);
 410 EXPORT_SYMBOL(raw_name2idx);
 411
 412 #define OBD_INIT_CHECK
 413 #ifdef OBD_INIT_CHECK
 414 int obd_init_checks(void)
 415 {
 416         __u64 u64val, div64val;
 417         char buf[64];
 418         int len, ret = 0;
 419
 420         CDEBUG(D_INFO, "LPU64=%s, LPD64=%s, LPX64=%s\n", LPU64, LPD64, LPX64);
 421
 422         CDEBUG(D_INFO, "OBD_OBJECT_EOF = "LPX64"\n", (__u64)OBD_OBJECT_EOF);
 423
 424         u64val = OBD_OBJECT_EOF;
 425         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 426         if (u64val != OBD_OBJECT_EOF) {
 427                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 428                        u64val, (int)sizeof(u64val));
 429                 ret = -EINVAL;
 430         }
 431         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 432         if (len != 18) {
 433                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 434                 ret = -EINVAL;
 435         }
 436
 437         div64val = OBD_OBJECT_EOF;
 438         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 439         if (u64val != OBD_OBJECT_EOF) {
 440                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 441                        u64val, (int)sizeof(u64val));
 442                 ret = -EOVERFLOW;
 443         }
 444         if (u64val >> 8 != OBD_OBJECT_EOF >> 8) {
 445                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 446                        u64val, (int)sizeof(u64val));
 447                 return -EOVERFLOW;
 448         }
 449         if (do_div(div64val, 256) != (u64val & 255)) {
 450                 CERROR("do_div("LPX64",256) != "LPU64"\n", u64val, u64val &255);
 451                 return -EOVERFLOW;
 452         }
 453         if (u64val >> 8 != div64val) {
 454                 CERROR("do_div("LPX64",256) "LPU64" != "LPU64"\n",
 455                        u64val, div64val, u64val >> 8);
 456                 return -EOVERFLOW;
 457         }
 458         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 459         if (len != 18) {
 460                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 461                 ret = -EINVAL;
 462         }
 463         len = snprintf(buf, sizeof(buf), LPU64, u64val);
 464         if (len != 20) {
 465                 CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len);
 466                 ret = -EINVAL;
 467         }
 468         len = snprintf(buf, sizeof(buf), LPD64, u64val);
 469         if (len != 2) {
 470                 CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len);
 471                 ret = -EINVAL;
 472         }
 473         if ((u64val & ~CFS_PAGE_MASK) >= CFS_PAGE_SIZE) {
 474                 CWARN("mask failed: u64val "LPU64" >= "LPU64"\n", u64val,
 475                       (__u64)CFS_PAGE_SIZE);
 476                 ret = -EINVAL;
 477         }
 478
 479         return ret;
 480 }
 481 #else
 482 #define obd_init_checks() do {} while(0)
 483 #endif
 484
 485 extern cfs_spinlock_t obd_types_lock;
 486 extern int class_procfs_init(void);
 487 extern int class_procfs_clean(void);
 488
 489 #ifdef __KERNEL__
 490 static int __init init_obdclass(void)
 491 #else
 492 int init_obdclass(void)
 493 #endif
 494 {
 495         int err;
 496 #ifdef __KERNEL__
 497         int i;
 498         int lustre_register_fs(void);
 499
 500         for (i = CAPA_SITE_CLIENT; i < CAPA_SITE_MAX; i++)
 501                 CFS_INIT_LIST_HEAD(&capa_list[i]);
 502 #endif
 503
 504 #ifdef CRAY_XT3
 505         LCONSOLE_INFO("Lustre: Build Version: "BUILD_VERSION"\n");
 506 #else
 507         LCONSOLE_INFO("OBD class driver, http://www.lustre.org/\n");
 508         LCONSOLE_INFO("        Lustre Version: "LUSTRE_VERSION_STRING"\n");
 509         LCONSOLE_INFO("        Build Version: "BUILD_VERSION"\n");
 510 #endif
 511
 512         cfs_spin_lock_init(&obd_types_lock);
 513         obd_zombie_impexp_init();
 514 #ifdef LPROCFS
 515         obd_memory = lprocfs_alloc_stats(OBD_STATS_NUM,
 516                                          LPROCFS_STATS_FLAG_NONE);
 517         if (obd_memory == NULL) {
 518                 CERROR("kmalloc of 'obd_memory' failed\n");
 519                 RETURN(-ENOMEM);
 520         }
 521
 522         lprocfs_counter_init(obd_memory, OBD_MEMORY_STAT,
 523                              LPROCFS_CNTR_AVGMINMAX,
 524                              "memused", "bytes");
 525         lprocfs_counter_init(obd_memory, OBD_MEMORY_PAGES_STAT,
 526                              LPROCFS_CNTR_AVGMINMAX,
 527                              "pagesused", "pages");
 528 #endif
 529         err = obd_init_checks();
 530         if (err == -EOVERFLOW)
 531                 return err;
 532
 533         class_init_uuidlist();
 534         err = class_handle_init();
 535         if (err)
 536                 return err;
 537
 538         cfs_spin_lock_init(&obd_dev_lock);
 539         CFS_INIT_LIST_HEAD(&obd_types);
 540
 541         err = cfs_psdev_register(&obd_psdev);
 542         if (err) {
 543                 CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err);
 544                 return err;
 545         }
 546
 547
 548         /* Default the dirty page cache cap to 1/2 of system memory.
 549          * For clients with less memory, a larger fraction is needed
 550          * for other purposes (mostly for BGL). */
 551         if (cfs_num_physpages <= 512 << (20 - CFS_PAGE_SHIFT))
 552                 obd_max_dirty_pages = cfs_num_physpages / 4;
 553         else
 554                 obd_max_dirty_pages = cfs_num_physpages / 2;
 555
 556         err = obd_init_caches();
 557         if (err)
 558                 return err;
 559 #ifdef __KERNEL__
 560         err = class_procfs_init();
 561         if (err)
 562                 return err;
 563 #endif
 564
 565         err = lu_global_init();
 566         if (err)
 567                 return err;
 568
 569 #ifdef __KERNEL__
 570         err = lustre_register_fs();
 571         if (err)
 572                 return err;
 573 #endif
 574         err = obd_hashes_init();
 575         if (err)
 576                 return err;
 577
 578         return err;
 579 }
 580
 581 /* liblustre doesn't call cleanup_obdclass, apparently.  we carry on in this
 582  * ifdef to the end of the file to cover module and versioning goo.*/
 583 #ifdef __KERNEL__
 584 static void cleanup_obdclass(void)
 585 {
 586         int lustre_unregister_fs(void);
 587         __u64 memory_leaked, pages_leaked;
 588         __u64 memory_max, pages_max;
 589         struct obd_device *obd;
 590         ENTRY;
 591
 592         lustre_unregister_fs();
 593
 594         cfs_psdev_deregister(&obd_psdev);
 595         for (obd_devlist_first(&obd);
 596              obd != NULL;
 597              obd_devlist_next(&obd)) {
 598                 if (obd->obd_set_up &&
 599                     OBT(obd) && OBP(obd, detach)) {
 600                         /* XXX should this call generic detach otherwise? */
 601                         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 602                         OBP(obd, detach)(obd);
 603                 }
 604         }
 605         obd_hashes_fini();
 606
 607         lu_global_fini();
 608
 609         obd_cleanup_caches();
 610         obd_sysctl_clean();
 611
 612         class_procfs_clean();
 613
 614         class_handle_cleanup();
 615         class_exit_uuidlist();
 616         obd_zombie_impexp_stop();
 617
 618         memory_leaked = obd_memory_sum();
 619         pages_leaked = obd_pages_sum();
 620
 621         memory_max = obd_memory_max();
 622         pages_max = obd_pages_max();
 623
 624         lprocfs_free_stats(&obd_memory);
 625         CDEBUG((memory_leaked) ? D_ERROR : D_INFO,
 626                "obd_memory max: "LPU64", leaked: "LPU64"\n",
 627                memory_max, memory_leaked);
 628         CDEBUG((pages_leaked) ? D_ERROR : D_INFO,
 629                "obd_memory_pages max: "LPU64", leaked: "LPU64"\n",
 630                pages_max, pages_leaked);
 631
 632         EXIT;
 633 }
 634
 635 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
 636 MODULE_DESCRIPTION("Lustre Class Driver Build Version: " BUILD_VERSION);
 637 MODULE_LICENSE("GPL");
 638
 639 cfs_module(obdclass, LUSTRE_VERSION_STRING, init_obdclass, cleanup_obdclass);
 640 #endif