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  * Object Devices Class Driver
   5  *
   6  *  Copyright (C) 2001-2003 Cluster File Systems, Inc.
   7  *
   8  *   This file is part of the Lustre file system, http://www.lustre.org
   9  *   Lustre is a trademark of Cluster File Systems, Inc.
  10  *
  11  *   You may have signed or agreed to another license before downloading
  12  *   this software.  If so, you are bound by the terms and conditions
  13  *   of that agreement, and the following does not apply to you.  See the
  14  *   LICENSE file included with this distribution for more information.
  15  *
  16  *   If you did not agree to a different license, then this copy of Lustre
  17  *   is open source software; you can redistribute it and/or modify it
  18  *   under the terms of version 2 of the GNU General Public License as
  19  *   published by the Free Software Foundation.
  20  *
  21  *   In either case, Lustre is distributed in the hope that it will be
  22  *   useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  23  *   of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24  *   license text for more details.
  25  *
  26  * These are the only exported functions, they provide some generic
  27  * infrastructure for managing object devices
  28  */
  29
  30 #define DEBUG_SUBSYSTEM S_CLASS
  31 #ifndef EXPORT_SYMTAB
  32 # define EXPORT_SYMTAB
  33 #endif
  34 #ifndef __KERNEL__
  35 # include <liblustre.h>
  36 #endif
  37
  38 #include <obd_support.h>
  39 #include <obd_class.h>
  40 #include <lustre_debug.h>
  41 #include <lprocfs_status.h>
  42 #ifdef __KERNEL__
  43 #include <linux/lustre_build_version.h>
  44 #endif
  45 #include <libcfs/list.h>
  46 #include "llog_internal.h"
  47
  48 #ifndef __KERNEL__
  49 /* liblustre workaround */
  50 atomic_t libcfs_kmemory = {0};
  51 #endif
  52
  53 struct obd_device *obd_devs[MAX_OBD_DEVICES];
  54 struct list_head obd_types;
  55 spinlock_t obd_dev_lock = SPIN_LOCK_UNLOCKED;
  56 #ifndef __KERNEL__
  57 atomic_t obd_memory;
  58 int obd_memmax;
  59 #endif
  60
  61 /* The following are visible and mutable through /proc/sys/lustre/. */
  62 unsigned int obd_fail_loc;
  63 unsigned int obd_debug_peer_on_timeout;
  64 unsigned int obd_dump_on_timeout;
  65 unsigned int obd_dump_on_eviction;
  66 unsigned int obd_timeout = 100; /* seconds */
  67 unsigned int ldlm_timeout = 20; /* seconds */
  68 unsigned int obd_health_check_timeout = 120; /* seconds */
  69 unsigned int obd_max_dirty_pages = 256;
  70 atomic_t obd_dirty_pages;
  71
  72 cfs_waitq_t obd_race_waitq;
  73 int obd_race_state;
  74
  75 #ifdef __KERNEL__
  76 unsigned int obd_print_fail_loc(void)
  77 {
  78         CWARN("obd_fail_loc = %x\n", obd_fail_loc);
  79         return obd_fail_loc;
  80 }
  81
  82 void obd_set_fail_loc(unsigned int fl)
  83 {
  84         obd_fail_loc = fl;
  85 }
  86
  87 /*  opening /dev/obd */
  88 static int obd_class_open(unsigned long flags, void *args)
  89 {
  90         ENTRY;
  91
  92         PORTAL_MODULE_USE;
  93         RETURN(0);
  94 }
  95
  96 /*  closing /dev/obd */
  97 static int obd_class_release(unsigned long flags, void *args)
  98 {
  99         ENTRY;
 100
 101         PORTAL_MODULE_UNUSE;
 102         RETURN(0);
 103 }
 104 #endif
 105
 106 static inline void obd_data2conn(struct lustre_handle *conn,
 107                                  struct obd_ioctl_data *data)
 108 {
 109         memset(conn, 0, sizeof *conn);
 110         conn->cookie = data->ioc_cookie;
 111 }
 112
 113 static inline void obd_conn2data(struct obd_ioctl_data *data,
 114                                  struct lustre_handle *conn)
 115 {
 116         data->ioc_cookie = conn->cookie;
 117 }
 118
 119 int class_resolve_dev_name(uint32_t len, const char *name)
 120 {
 121         int rc;
 122         int dev;
 123
 124         ENTRY;
 125         if (!len || !name) {
 126                 CERROR("No name passed,!\n");
 127                 GOTO(out, rc = -EINVAL);
 128         }
 129         if (name[len - 1] != 0) {
 130                 CERROR("Name not nul terminated!\n");
 131                 GOTO(out, rc = -EINVAL);
 132         }
 133
 134         CDEBUG(D_IOCTL, "device name %s\n", name);
 135         dev = class_name2dev(name);
 136         if (dev == -1) {
 137                 CDEBUG(D_IOCTL, "No device for name %s!\n", name);
 138                 GOTO(out, rc = -EINVAL);
 139         }
 140
 141         CDEBUG(D_IOCTL, "device name %s, dev %d\n", name, dev);
 142         rc = dev;
 143
 144 out:
 145         RETURN(rc);
 146 }
 147
 148 int class_handle_ioctl(unsigned int cmd, unsigned long arg)
 149 {
 150         char *buf = NULL;
 151         struct obd_ioctl_data *data;
 152         struct libcfs_debug_ioctl_data *debug_data;
 153         struct obd_device *obd = NULL;
 154         int err = 0, len = 0;
 155         ENTRY;
 156
 157         /* only for debugging */
 158         if (cmd == LIBCFS_IOC_DEBUG_MASK) {
 159                 debug_data = (struct libcfs_debug_ioctl_data*)arg;
 160                 libcfs_subsystem_debug = debug_data->subs;
 161                 libcfs_debug = debug_data->debug;
 162                 return 0;
 163         }
 164
 165         CDEBUG(D_IOCTL, "cmd = %x\n", cmd);
 166         if (obd_ioctl_getdata(&buf, &len, (void *)arg)) {
 167                 CERROR("OBD ioctl: data error\n");
 168                 GOTO(out, err = -EINVAL);
 169         }
 170         data = (struct obd_ioctl_data *)buf;
 171
 172         switch (cmd) {
 173         case OBD_IOC_PROCESS_CFG: {
 174                 struct lustre_cfg *lcfg;
 175
 176                 if (!data->ioc_plen1 || !data->ioc_pbuf1) {
 177                         CERROR("No config buffer passed!\n");
 178                         GOTO(out, err = -EINVAL);
 179                 }
 180                 OBD_ALLOC(lcfg, data->ioc_plen1);
 181                 if (lcfg == NULL)
 182                         GOTO(out, err = -ENOMEM);
 183                 err = copy_from_user(lcfg, data->ioc_pbuf1, data->ioc_plen1);
 184                 if (!err)
 185                         err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
 186                 if (!err)
 187                         err = class_process_config(lcfg);
 188                 OBD_FREE(lcfg, data->ioc_plen1);
 189                 GOTO(out, err);
 190         }
 191
 192         case OBD_GET_VERSION:
 193                 if (!data->ioc_inlbuf1) {
 194                         CERROR("No buffer passed in ioctl\n");
 195                         GOTO(out, err = -EINVAL);
 196                 }
 197
 198                 if (strlen(BUILD_VERSION) + 1 > data->ioc_inllen1) {
 199                         CERROR("ioctl buffer too small to hold version\n");
 200                         GOTO(out, err = -EINVAL);
 201                 }
 202
 203                 memcpy(data->ioc_bulk, BUILD_VERSION,
 204                        strlen(BUILD_VERSION) + 1);
 205
 206                 err = obd_ioctl_popdata((void *)arg, data, len);
 207                 if (err)
 208                         err = -EFAULT;
 209                 GOTO(out, err);
 210
 211         case OBD_IOC_NAME2DEV: {
 212                 /* Resolve a device name.  This does not change the
 213                  * currently selected device.
 214                  */
 215                 int dev;
 216
 217                 dev = class_resolve_dev_name(data->ioc_inllen1,
 218                                              data->ioc_inlbuf1);
 219                 data->ioc_dev = dev;
 220                 if (dev < 0)
 221                         GOTO(out, err = -EINVAL);
 222
 223                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 224                 if (err)
 225                         err = -EFAULT;
 226                 GOTO(out, err);
 227         }
 228
 229         case OBD_IOC_UUID2DEV: {
 230                 /* Resolve a device uuid.  This does not change the
 231                  * currently selected device.
 232                  */
 233                 int dev;
 234                 struct obd_uuid uuid;
 235
 236                 if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
 237                         CERROR("No UUID passed!\n");
 238                         GOTO(out, err = -EINVAL);
 239                 }
 240                 if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
 241                         CERROR("UUID not NUL terminated!\n");
 242                         GOTO(out, err = -EINVAL);
 243                 }
 244
 245                 CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
 246                 obd_str2uuid(&uuid, data->ioc_inlbuf1);
 247                 dev = class_uuid2dev(&uuid);
 248                 data->ioc_dev = dev;
 249                 if (dev == -1) {
 250                         CDEBUG(D_IOCTL, "No device for UUID %s!\n",
 251                                data->ioc_inlbuf1);
 252                         GOTO(out, err = -EINVAL);
 253                 }
 254
 255                 CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
 256                        dev);
 257                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 258                 if (err)
 259                         err = -EFAULT;
 260                 GOTO(out, err);
 261         }
 262
 263         case OBD_IOC_CLOSE_UUID: {
 264                 CDEBUG(D_IOCTL, "closing all connections to uuid %s (NOOP)\n",
 265                        data->ioc_inlbuf1);
 266                 GOTO(out, err = 0);
 267         }
 268
 269         case OBD_IOC_GETDEVICE: {
 270                 int     index = data->ioc_count;
 271                 char    *status, *str;
 272
 273                 if (!data->ioc_inlbuf1) {
 274                         CERROR("No buffer passed in ioctl\n");
 275                         GOTO(out, err = -EINVAL);
 276                 }
 277                 if (data->ioc_inllen1 < 128) {
 278                         CERROR("ioctl buffer too small to hold version\n");
 279                         GOTO(out, err = -EINVAL);
 280                 }
 281
 282                 obd = class_num2obd(index);
 283                 if (!obd)
 284                         GOTO(out, err = -ENOENT);
 285
 286                 if (obd->obd_stopping)
 287                         status = "ST";
 288                 else if (obd->obd_set_up)
 289                         status = "UP";
 290                 else if (obd->obd_attached)
 291                         status = "AT";
 292                 else
 293                         status = "--";
 294                 str = (char *)data->ioc_bulk;
 295                 snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d",
 296                          (int)index, status, obd->obd_type->typ_name,
 297                          obd->obd_name, obd->obd_uuid.uuid,
 298                          atomic_read(&obd->obd_refcount));
 299                 err = obd_ioctl_popdata((void *)arg, data, len);
 300
 301                 GOTO(out, err = 0);
 302         }
 303
 304         }
 305
 306         if (data->ioc_dev >= class_devno_max()) {
 307                 CERROR("OBD ioctl: No device\n");
 308                 GOTO(out, err = -EINVAL);
 309         }
 310
 311         obd = class_num2obd(data->ioc_dev);
 312         if (obd == NULL) {
 313                 CERROR("OBD ioctl : No Device %d\n", data->ioc_dev);
 314                 GOTO(out, err = -EINVAL);
 315         }
 316         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 317
 318         if (!obd->obd_set_up || obd->obd_stopping) {
 319                 CERROR("OBD ioctl: device not setup %d \n", data->ioc_dev);
 320                 GOTO(out, err = -EINVAL);
 321         }
 322
 323         switch(cmd) {
 324         case OBD_IOC_NO_TRANSNO: {
 325                 if (!obd->obd_attached) {
 326                         CERROR("Device %d not attached\n", obd->obd_minor);
 327                         GOTO(out, err = -ENODEV);
 328                 }
 329                 CDEBUG(D_HA, "%s: disabling committed-transno notification\n",
 330                        obd->obd_name);
 331                 obd->obd_no_transno = 1;
 332                 GOTO(out, err = 0);
 333         }
 334
 335         default: {
 336                 err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL);
 337                 if (err)
 338                         GOTO(out, err);
 339
 340                 err = obd_ioctl_popdata((void *)arg, data, len);
 341                 if (err)
 342                         err = -EFAULT;
 343                 GOTO(out, err);
 344         }
 345         }
 346
 347  out:
 348         if (buf)
 349                 obd_ioctl_freedata(buf, len);
 350         RETURN(err);
 351 } /* class_handle_ioctl */
 352
 353
 354
 355 #define OBD_MINOR 241
 356 #ifdef __KERNEL__
 357 /* to control /dev/obd */
 358 static int obd_class_ioctl (struct cfs_psdev_file *pfile, unsigned long cmd,
 359                             void *arg)
 360 {
 361         return class_handle_ioctl(cmd, (unsigned long)arg);
 362 }
 363
 364 /* declare character device */
 365 struct cfs_psdev_ops obd_psdev_ops = {
 366         /* .p_open    = */ obd_class_open,      /* open */
 367         /* .p_close   = */ obd_class_release,   /* release */
 368         /* .p_read    = */ NULL,
 369         /* .p_write   = */ NULL,
 370         /* .p_ioctl   = */ obd_class_ioctl     /* ioctl */
 371 };
 372
 373 extern cfs_psdev_t obd_psdev;
 374 #else
 375 void *obd_psdev = NULL;
 376 #endif
 377
 378 EXPORT_SYMBOL(obd_devs);
 379 EXPORT_SYMBOL(obd_fail_loc);
 380 EXPORT_SYMBOL(obd_print_fail_loc);
 381 EXPORT_SYMBOL(obd_race_waitq);
 382 EXPORT_SYMBOL(obd_race_state);
 383 EXPORT_SYMBOL(obd_dump_on_timeout);
 384 EXPORT_SYMBOL(obd_dump_on_eviction);
 385 EXPORT_SYMBOL(obd_timeout);
 386 EXPORT_SYMBOL(ldlm_timeout);
 387 EXPORT_SYMBOL(obd_health_check_timeout);
 388 EXPORT_SYMBOL(obd_max_dirty_pages);
 389 EXPORT_SYMBOL(obd_dirty_pages);
 390 EXPORT_SYMBOL(ptlrpc_put_connection_superhack);
 391
 392 EXPORT_SYMBOL(proc_lustre_root);
 393
 394 EXPORT_SYMBOL(class_register_type);
 395 EXPORT_SYMBOL(class_unregister_type);
 396 EXPORT_SYMBOL(class_get_type);
 397 EXPORT_SYMBOL(class_put_type);
 398 EXPORT_SYMBOL(class_name2dev);
 399 EXPORT_SYMBOL(class_name2obd);
 400 EXPORT_SYMBOL(class_uuid2dev);
 401 EXPORT_SYMBOL(class_uuid2obd);
 402 EXPORT_SYMBOL(class_find_client_obd);
 403 EXPORT_SYMBOL(class_find_client_notype);
 404 EXPORT_SYMBOL(class_devices_in_group);
 405 EXPORT_SYMBOL(class_conn2export);
 406 EXPORT_SYMBOL(class_exp2obd);
 407 EXPORT_SYMBOL(class_conn2obd);
 408 EXPORT_SYMBOL(class_exp2cliimp);
 409 EXPORT_SYMBOL(class_conn2cliimp);
 410 EXPORT_SYMBOL(class_disconnect);
 411 EXPORT_SYMBOL(class_num2obd);
 412
 413 /* uuid.c */
 414 EXPORT_SYMBOL(class_generate_random_uuid);
 415 EXPORT_SYMBOL(class_uuid_unparse);
 416 EXPORT_SYMBOL(lustre_uuid_to_peer);
 417
 418 EXPORT_SYMBOL(class_handle_hash);
 419 EXPORT_SYMBOL(class_handle_unhash);
 420 EXPORT_SYMBOL(class_handle2object);
 421
 422 /* obd_config.c */
 423 EXPORT_SYMBOL(class_incref);
 424 EXPORT_SYMBOL(class_decref);
 425 EXPORT_SYMBOL(class_get_profile);
 426 EXPORT_SYMBOL(class_del_profile);
 427 EXPORT_SYMBOL(class_del_profiles);
 428 EXPORT_SYMBOL(class_process_config);
 429 EXPORT_SYMBOL(class_process_proc_param);
 430 EXPORT_SYMBOL(class_config_parse_llog);
 431 EXPORT_SYMBOL(class_config_dump_llog);
 432 EXPORT_SYMBOL(class_attach);
 433 EXPORT_SYMBOL(class_setup);
 434 EXPORT_SYMBOL(class_cleanup);
 435 EXPORT_SYMBOL(class_detach);
 436 EXPORT_SYMBOL(class_manual_cleanup);
 437
 438 #define OBD_INIT_CHECK
 439 #ifdef OBD_INIT_CHECK
 440 int obd_init_checks(void)
 441 {
 442         __u64 u64val, div64val;
 443         char buf[64];
 444         int len, ret = 0;
 445
 446         CDEBUG(D_INFO, "LPU64=%s, LPD64=%s, LPX64=%s, LPSZ=%s, LPSSZ=%s\n",
 447                LPU64, LPD64, LPX64, LPSZ, LPSSZ);
 448
 449         CDEBUG(D_INFO, "OBD_OBJECT_EOF = "LPX64"\n", (__u64)OBD_OBJECT_EOF);
 450
 451         u64val = OBD_OBJECT_EOF;
 452         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 453         if (u64val != OBD_OBJECT_EOF) {
 454                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 455                        u64val, (int)sizeof(u64val));
 456                 ret = -EINVAL;
 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
 464         div64val = OBD_OBJECT_EOF;
 465         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 466         if (u64val != OBD_OBJECT_EOF) {
 467                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 468                        u64val, (int)sizeof(u64val));
 469                 ret = -EOVERFLOW;
 470         }
 471         if (u64val >> 8 != OBD_OBJECT_EOF >> 8) {
 472                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 473                        u64val, (int)sizeof(u64val));
 474                 return -EOVERFLOW;
 475         }
 476         if (do_div(div64val, 256) != (u64val & 255)) {
 477                 CERROR("do_div("LPX64",256) != "LPU64"\n", u64val, u64val &255);
 478                 return -EOVERFLOW;
 479         }
 480         if (u64val >> 8 != div64val) {
 481                 CERROR("do_div("LPX64",256) "LPU64" != "LPU64"\n",
 482                        u64val, div64val, u64val >> 8);
 483                 return -EOVERFLOW;
 484         }
 485         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 486         if (len != 18) {
 487                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 488                 ret = -EINVAL;
 489         }
 490         len = snprintf(buf, sizeof(buf), LPU64, u64val);
 491         if (len != 20) {
 492                 CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len);
 493                 ret = -EINVAL;
 494         }
 495         len = snprintf(buf, sizeof(buf), LPD64, u64val);
 496         if (len != 2) {
 497                 CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len);
 498                 ret = -EINVAL;
 499         }
 500         if ((u64val & ~CFS_PAGE_MASK) >= CFS_PAGE_SIZE) {
 501                 CWARN("mask failed: u64val "LPU64" >= %lu\n", u64val,
 502                       CFS_PAGE_SIZE);
 503                 ret = -EINVAL;
 504         }
 505
 506         return ret;
 507 }
 508 #else
 509 #define obd_init_checks() do {} while(0)
 510 #endif
 511
 512 extern spinlock_t obd_types_lock;
 513 extern spinlock_t handle_lock;
 514 extern int class_procfs_init(void);
 515 extern int class_procfs_clean(void);
 516
 517 #ifdef __KERNEL__
 518 static int __init init_obdclass(void)
 519 #else
 520 int init_obdclass(void)
 521 #endif
 522 {
 523         int i, err;
 524 #ifdef __KERNEL__
 525         int lustre_register_fs(void);
 526
 527         printk(KERN_INFO "Lustre: OBD class driver, info@clusterfs.com\n");
 528         printk(KERN_INFO "        Lustre Version: "LUSTRE_VERSION_STRING"\n");
 529         printk(KERN_INFO "        Build Version: "BUILD_VERSION"\n");
 530 #else
 531         CDEBUG(D_INFO, "Lustre: OBD class driver, info@clusterfs.com\n");
 532         CDEBUG(D_INFO, "        Lustre Version: "LUSTRE_VERSION_STRING"\n");
 533         CDEBUG(D_INFO, "        Build Version: "BUILD_VERSION"\n");
 534 #endif
 535
 536         spin_lock_init(&obd_types_lock);
 537         spin_lock_init(&handle_lock);
 538         cfs_waitq_init(&obd_race_waitq);
 539         obd_zombie_impexp_init();
 540
 541         err = obd_init_checks();
 542         if (err == -EOVERFLOW)
 543                 return err;
 544
 545         class_init_uuidlist();
 546         err = class_handle_init();
 547         if (err)
 548                 return err;
 549
 550         spin_lock_init(&obd_dev_lock);
 551         INIT_LIST_HEAD(&obd_types);
 552
 553         err = cfs_psdev_register(&obd_psdev);
 554         if (err) {
 555                 CERROR("cannot register %d err %d\n", OBD_MINOR, err);
 556                 return err;
 557         }
 558
 559         /* This struct is already zerod for us (static global) */
 560         for (i = 0; i < class_devno_max(); i++)
 561                 obd_devs[i] = NULL;
 562
 563         /* Default the dirty page cache cap to 1/2 of system memory */
 564         obd_max_dirty_pages = num_physpages / 2;
 565
 566         err = obd_init_caches();
 567         if (err)
 568                 return err;
 569 #ifdef __KERNEL__
 570         err = class_procfs_init();
 571         if (err)
 572                 return err;
 573         err = lustre_register_fs();
 574 #endif
 575
 576         return err;
 577 }
 578
 579 /* liblustre doesn't call cleanup_obdclass, apparently.  we carry on in this
 580  * ifdef to the end of the file to cover module and versioning goo.*/
 581 #ifdef __KERNEL__
 582 static void cleanup_obdclass(void)
 583 {
 584         int i;
 585         int lustre_unregister_fs(void);
 586         ENTRY;
 587
 588         lustre_unregister_fs();
 589
 590         cfs_psdev_deregister(&obd_psdev);
 591         for (i = 0; i < class_devno_max(); i++) {
 592                 struct obd_device *obd = class_num2obd(i);
 593                 if (obd && obd->obd_set_up &&
 594                     OBT(obd) && OBP(obd, detach)) {
 595                         /* XXX should this call generic detach otherwise? */
 596                         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 597                         OBP(obd, detach)(obd);
 598                 }
 599         }
 600
 601         obd_cleanup_caches();
 602         obd_sysctl_clean();
 603
 604         class_procfs_clean();
 605
 606         class_handle_cleanup();
 607         class_exit_uuidlist();
 608         EXIT;
 609 }
 610
 611 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
 612 MODULE_DESCRIPTION("Lustre Class Driver Build Version: " BUILD_VERSION);
 613 MODULE_LICENSE("GPL");
 614
 615 cfs_module(obdclass, LUSTRE_VERSION_STRING, init_obdclass, cleanup_obdclass);
 616 #endif