lustre/obdclass/class_obd.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, Whamcloud, Inc.
  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 __KERNEL__
  39 # include <liblustre.h>
  40 #else
  41 # include <asm/atomic.h>
  42 #endif
  43
  44 #include <obd_support.h>
  45 #include <obd_class.h>
  46 #include <lnet/lnetctl.h>
  47 #include <lustre_debug.h>
  48 #include <lprocfs_status.h>
  49 #include <lustre/lustre_build_version.h>
  50 #include <libcfs/list.h>
  51 #include "llog_internal.h"
  52
  53 #ifndef __KERNEL__
  54 /* liblustre workaround */
  55 cfs_atomic_t libcfs_kmemory = {0};
  56 #endif
  57
  58 struct obd_device *obd_devs[MAX_OBD_DEVICES];
  59 EXPORT_SYMBOL(obd_devs);
  60 cfs_list_t obd_types;
  61 DEFINE_RWLOCK(obd_dev_lock);
  62
  63 #ifndef __KERNEL__
  64 __u64 obd_max_pages = 0;
  65 __u64 obd_max_alloc = 0;
  66 __u64 obd_alloc;
  67 __u64 obd_pages;
  68 #endif
  69
  70 /* The following are visible and mutable through /proc/sys/lustre/. */
  71 unsigned int obd_debug_peer_on_timeout;
  72 EXPORT_SYMBOL(obd_debug_peer_on_timeout);
  73 unsigned int obd_dump_on_timeout;
  74 EXPORT_SYMBOL(obd_dump_on_timeout);
  75 unsigned int obd_dump_on_eviction;
  76 EXPORT_SYMBOL(obd_dump_on_eviction);
  77 unsigned int obd_max_dirty_pages = 256;
  78 EXPORT_SYMBOL(obd_max_dirty_pages);
  79 cfs_atomic_t obd_dirty_pages;
  80 EXPORT_SYMBOL(obd_dirty_pages);
  81 unsigned int obd_timeout = OBD_TIMEOUT_DEFAULT;   /* seconds */
  82 EXPORT_SYMBOL(obd_timeout);
  83 unsigned int ldlm_timeout = LDLM_TIMEOUT_DEFAULT; /* seconds */
  84 EXPORT_SYMBOL(ldlm_timeout);
  85 unsigned int obd_timeout_set;
  86 EXPORT_SYMBOL(obd_timeout_set);
  87 unsigned int ldlm_timeout_set;
  88 EXPORT_SYMBOL(ldlm_timeout_set);
  89 /* Adaptive timeout defs here instead of ptlrpc module for /proc/sys/ access */
  90 unsigned int at_min = 0;
  91 EXPORT_SYMBOL(at_min);
  92 unsigned int at_max = 600;
  93 EXPORT_SYMBOL(at_max);
  94 unsigned int at_history = 600;
  95 EXPORT_SYMBOL(at_history);
  96 int at_early_margin = 5;
  97 EXPORT_SYMBOL(at_early_margin);
  98 int at_extra = 30;
  99 EXPORT_SYMBOL(at_extra);
 100
 101 cfs_atomic_t obd_dirty_transit_pages;
 102 EXPORT_SYMBOL(obd_dirty_transit_pages);
 103
 104 char obd_jobid_var[JOBSTATS_JOBID_VAR_MAX_LEN + 1] = JOBSTATS_DISABLE;
 105 EXPORT_SYMBOL(obd_jobid_var);
 106
 107 /* Get jobid of current process by reading the environment variable
 108  * stored in between the "env_start" & "env_end" of task struct.
 109  *
 110  * TODO:
 111  * It's better to cache the jobid for later use if there is any
 112  * efficient way, the cl_env code probably could be reused for this
 113  * purpose.
 114  *
 115  * If some job scheduler doesn't store jobid in the "env_start/end",
 116  * then an upcall could be issued here to get the jobid by utilizing
 117  * the userspace tools/api. Then, the jobid must be cached.
 118  */
 119 int lustre_get_jobid(char *jobid)
 120 {
 121 #ifdef __KERNEL__
 122         int jobid_len = JOBSTATS_JOBID_SIZE;
 123 #endif
 124         int ret = 0;
 125         ENTRY;
 126
 127         memset(jobid, 0, JOBSTATS_JOBID_SIZE);
 128         /* Jobstats isn't enabled */
 129         if (!memcmp(obd_jobid_var, JOBSTATS_DISABLE,
 130                     strlen(JOBSTATS_DISABLE))) {
 131                 RETURN(0);
 132         }
 133
 134         /* Use process name + fsuid as jobid */
 135         if (!memcmp(obd_jobid_var, JOBSTATS_PROCNAME_UID,
 136                     strlen(JOBSTATS_PROCNAME_UID))) {
 137                 snprintf(jobid, JOBSTATS_JOBID_SIZE, "%s_%u",
 138                          cfs_curproc_comm(), cfs_curproc_fsuid());
 139                 RETURN(0);
 140         }
 141
 142 #ifdef __KERNEL__
 143         ret = cfs_get_environ(obd_jobid_var, jobid, &jobid_len);
 144         if (ret) {
 145                 CDEBUG((ret != -ENOENT && ret != -EINVAL && ret != -EDEADLK) ?
 146                        D_ERROR : D_INFO, "Get jobid for (%s) failed: rc = %d\n",
 147                        obd_jobid_var, ret);
 148         }
 149 #endif
 150         RETURN(ret);
 151 }
 152 EXPORT_SYMBOL(lustre_get_jobid);
 153
 154 static inline void obd_data2conn(struct lustre_handle *conn,
 155                                  struct obd_ioctl_data *data)
 156 {
 157         memset(conn, 0, sizeof *conn);
 158         conn->cookie = data->ioc_cookie;
 159 }
 160
 161 static inline void obd_conn2data(struct obd_ioctl_data *data,
 162                                  struct lustre_handle *conn)
 163 {
 164         data->ioc_cookie = conn->cookie;
 165 }
 166
 167 int class_resolve_dev_name(__u32 len, const char *name)
 168 {
 169         int rc;
 170         int dev;
 171
 172         ENTRY;
 173         if (!len || !name) {
 174                 CERROR("No name passed,!\n");
 175                 GOTO(out, rc = -EINVAL);
 176         }
 177         if (name[len - 1] != 0) {
 178                 CERROR("Name not nul terminated!\n");
 179                 GOTO(out, rc = -EINVAL);
 180         }
 181
 182         CDEBUG(D_IOCTL, "device name %s\n", name);
 183         dev = class_name2dev(name);
 184         if (dev == -1) {
 185                 CDEBUG(D_IOCTL, "No device for name %s!\n", name);
 186                 GOTO(out, rc = -EINVAL);
 187         }
 188
 189         CDEBUG(D_IOCTL, "device name %s, dev %d\n", name, dev);
 190         rc = dev;
 191
 192 out:
 193         RETURN(rc);
 194 }
 195
 196 int class_handle_ioctl(unsigned int cmd, unsigned long arg)
 197 {
 198         char *buf = NULL;
 199         struct obd_ioctl_data *data;
 200         struct libcfs_debug_ioctl_data *debug_data;
 201         struct obd_device *obd = NULL;
 202         int err = 0, len = 0;
 203         ENTRY;
 204
 205         /* only for debugging */
 206         if (cmd == LIBCFS_IOC_DEBUG_MASK) {
 207                 debug_data = (struct libcfs_debug_ioctl_data*)arg;
 208                 libcfs_subsystem_debug = debug_data->subs;
 209                 libcfs_debug = debug_data->debug;
 210                 return 0;
 211         }
 212
 213         CDEBUG(D_IOCTL, "cmd = %x\n", cmd);
 214         if (obd_ioctl_getdata(&buf, &len, (void *)arg)) {
 215                 CERROR("OBD ioctl: data error\n");
 216                 RETURN(-EINVAL);
 217         }
 218         data = (struct obd_ioctl_data *)buf;
 219
 220         switch (cmd) {
 221         case OBD_IOC_PROCESS_CFG: {
 222                 struct lustre_cfg *lcfg;
 223
 224                 if (!data->ioc_plen1 || !data->ioc_pbuf1) {
 225                         CERROR("No config buffer passed!\n");
 226                         GOTO(out, err = -EINVAL);
 227                 }
 228                 OBD_ALLOC(lcfg, data->ioc_plen1);
 229                 if (lcfg == NULL)
 230                         GOTO(out, err = -ENOMEM);
 231                 err = cfs_copy_from_user(lcfg, data->ioc_pbuf1,
 232                                          data->ioc_plen1);
 233                 if (!err)
 234                         err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
 235                 if (!err)
 236                         err = class_process_config(lcfg);
 237
 238                 OBD_FREE(lcfg, data->ioc_plen1);
 239                 GOTO(out, err);
 240         }
 241
 242         case OBD_GET_VERSION:
 243                 if (!data->ioc_inlbuf1) {
 244                         CERROR("No buffer passed in ioctl\n");
 245                         GOTO(out, err = -EINVAL);
 246                 }
 247
 248                 if (strlen(BUILD_VERSION) + 1 > data->ioc_inllen1) {
 249                         CERROR("ioctl buffer too small to hold version\n");
 250                         GOTO(out, err = -EINVAL);
 251                 }
 252
 253                 memcpy(data->ioc_bulk, BUILD_VERSION,
 254                        strlen(BUILD_VERSION) + 1);
 255
 256                 err = obd_ioctl_popdata((void *)arg, data, len);
 257                 if (err)
 258                         err = -EFAULT;
 259                 GOTO(out, err);
 260
 261         case OBD_IOC_NAME2DEV: {
 262                 /* Resolve a device name.  This does not change the
 263                  * currently selected device.
 264                  */
 265                 int dev;
 266
 267                 dev = class_resolve_dev_name(data->ioc_inllen1,
 268                                              data->ioc_inlbuf1);
 269                 data->ioc_dev = dev;
 270                 if (dev < 0)
 271                         GOTO(out, err = -EINVAL);
 272
 273                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 274                 if (err)
 275                         err = -EFAULT;
 276                 GOTO(out, err);
 277         }
 278
 279         case OBD_IOC_UUID2DEV: {
 280                 /* Resolve a device uuid.  This does not change the
 281                  * currently selected device.
 282                  */
 283                 int dev;
 284                 struct obd_uuid uuid;
 285
 286                 if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
 287                         CERROR("No UUID passed!\n");
 288                         GOTO(out, err = -EINVAL);
 289                 }
 290                 if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
 291                         CERROR("UUID not NUL terminated!\n");
 292                         GOTO(out, err = -EINVAL);
 293                 }
 294
 295                 CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
 296                 obd_str2uuid(&uuid, data->ioc_inlbuf1);
 297                 dev = class_uuid2dev(&uuid);
 298                 data->ioc_dev = dev;
 299                 if (dev == -1) {
 300                         CDEBUG(D_IOCTL, "No device for UUID %s!\n",
 301                                data->ioc_inlbuf1);
 302                         GOTO(out, err = -EINVAL);
 303                 }
 304
 305                 CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
 306                        dev);
 307                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 308                 if (err)
 309                         err = -EFAULT;
 310                 GOTO(out, err);
 311         }
 312
 313         case OBD_IOC_CLOSE_UUID: {
 314                 CDEBUG(D_IOCTL, "closing all connections to uuid %s (NOOP)\n",
 315                        data->ioc_inlbuf1);
 316                 GOTO(out, err = 0);
 317         }
 318
 319         case OBD_IOC_GETDEVICE: {
 320                 int     index = data->ioc_count;
 321                 char    *status, *str;
 322
 323                 if (!data->ioc_inlbuf1) {
 324                         CERROR("No buffer passed in ioctl\n");
 325                         GOTO(out, err = -EINVAL);
 326                 }
 327                 if (data->ioc_inllen1 < 128) {
 328                         CERROR("ioctl buffer too small to hold version\n");
 329                         GOTO(out, err = -EINVAL);
 330                 }
 331
 332                 obd = class_num2obd(index);
 333                 if (!obd)
 334                         GOTO(out, err = -ENOENT);
 335
 336                 if (obd->obd_stopping)
 337                         status = "ST";
 338                 else if (obd->obd_set_up)
 339                         status = "UP";
 340                 else if (obd->obd_attached)
 341                         status = "AT";
 342                 else
 343                         status = "--";
 344                 str = (char *)data->ioc_bulk;
 345                 snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d",
 346                          (int)index, status, obd->obd_type->typ_name,
 347                          obd->obd_name, obd->obd_uuid.uuid,
 348                          cfs_atomic_read(&obd->obd_refcount));
 349                 err = obd_ioctl_popdata((void *)arg, data, len);
 350
 351                 GOTO(out, err = 0);
 352         }
 353
 354         }
 355
 356         if (data->ioc_dev == OBD_DEV_BY_DEVNAME) {
 357                 if (data->ioc_inllen4 <= 0 || data->ioc_inlbuf4 == NULL)
 358                         GOTO(out, err = -EINVAL);
 359                 if (strnlen(data->ioc_inlbuf4, MAX_OBD_NAME) >= MAX_OBD_NAME)
 360                         GOTO(out, err = -EINVAL);
 361                 obd = class_name2obd(data->ioc_inlbuf4);
 362         } else if (data->ioc_dev < class_devno_max()) {
 363                 obd = class_num2obd(data->ioc_dev);
 364         } else {
 365                 CERROR("OBD ioctl: No device\n");
 366                 GOTO(out, err = -EINVAL);
 367         }
 368
 369         if (obd == NULL) {
 370                 CERROR("OBD ioctl : No Device %d\n", data->ioc_dev);
 371                 GOTO(out, err = -EINVAL);
 372         }
 373         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 374
 375         if (!obd->obd_set_up || obd->obd_stopping) {
 376                 CERROR("OBD ioctl: device not setup %d \n", data->ioc_dev);
 377                 GOTO(out, err = -EINVAL);
 378         }
 379
 380         switch(cmd) {
 381         case OBD_IOC_NO_TRANSNO: {
 382                 if (!obd->obd_attached) {
 383                         CERROR("Device %d not attached\n", obd->obd_minor);
 384                         GOTO(out, err = -ENODEV);
 385                 }
 386                 CDEBUG(D_HA, "%s: disabling committed-transno notification\n",
 387                        obd->obd_name);
 388                 obd->obd_no_transno = 1;
 389                 GOTO(out, err = 0);
 390         }
 391
 392         default: {
 393                 err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL);
 394                 if (err)
 395                         GOTO(out, err);
 396
 397                 err = obd_ioctl_popdata((void *)arg, data, len);
 398                 if (err)
 399                         err = -EFAULT;
 400                 GOTO(out, err);
 401         }
 402         }
 403
 404  out:
 405         if (buf)
 406                 obd_ioctl_freedata(buf, len);
 407         RETURN(err);
 408 } /* class_handle_ioctl */
 409
 410 #ifdef __KERNEL__
 411 extern cfs_psdev_t obd_psdev;
 412 #else
 413 void *obd_psdev = NULL;
 414 #endif
 415
 416 #define OBD_INIT_CHECK
 417 #ifdef OBD_INIT_CHECK
 418 int obd_init_checks(void)
 419 {
 420         __u64 u64val, div64val;
 421         char buf[64];
 422         int len, ret = 0;
 423
 424         CDEBUG(D_INFO, "LPU64=%s, LPD64=%s, LPX64=%s\n", LPU64, LPD64, LPX64);
 425
 426         CDEBUG(D_INFO, "OBD_OBJECT_EOF = "LPX64"\n", (__u64)OBD_OBJECT_EOF);
 427
 428         u64val = OBD_OBJECT_EOF;
 429         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 430         if (u64val != OBD_OBJECT_EOF) {
 431                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 432                        u64val, (int)sizeof(u64val));
 433                 ret = -EINVAL;
 434         }
 435         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 436         if (len != 18) {
 437                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 438                 ret = -EINVAL;
 439         }
 440
 441         div64val = OBD_OBJECT_EOF;
 442         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 443         if (u64val != OBD_OBJECT_EOF) {
 444                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 445                        u64val, (int)sizeof(u64val));
 446                 ret = -EOVERFLOW;
 447         }
 448         if (u64val >> 8 != OBD_OBJECT_EOF >> 8) {
 449                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 450                        u64val, (int)sizeof(u64val));
 451                 return -EOVERFLOW;
 452         }
 453         if (do_div(div64val, 256) != (u64val & 255)) {
 454                 CERROR("do_div("LPX64",256) != "LPU64"\n", u64val, u64val &255);
 455                 return -EOVERFLOW;
 456         }
 457         if (u64val >> 8 != div64val) {
 458                 CERROR("do_div("LPX64",256) "LPU64" != "LPU64"\n",
 459                        u64val, div64val, u64val >> 8);
 460                 return -EOVERFLOW;
 461         }
 462         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 463         if (len != 18) {
 464                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 465                 ret = -EINVAL;
 466         }
 467         len = snprintf(buf, sizeof(buf), LPU64, u64val);
 468         if (len != 20) {
 469                 CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len);
 470                 ret = -EINVAL;
 471         }
 472         len = snprintf(buf, sizeof(buf), LPD64, u64val);
 473         if (len != 2) {
 474                 CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len);
 475                 ret = -EINVAL;
 476         }
 477         if ((u64val & ~CFS_PAGE_MASK) >= CFS_PAGE_SIZE) {
 478                 CWARN("mask failed: u64val "LPU64" >= "LPU64"\n", u64val,
 479                       (__u64)CFS_PAGE_SIZE);
 480                 ret = -EINVAL;
 481         }
 482
 483         return ret;
 484 }
 485 #else
 486 #define obd_init_checks() do {} while(0)
 487 #endif
 488
 489 extern cfs_spinlock_t obd_types_lock;
 490 extern int class_procfs_init(void);
 491 extern int class_procfs_clean(void);
 492
 493 #ifdef __KERNEL__
 494 static int __init init_obdclass(void)
 495 #else
 496 int init_obdclass(void)
 497 #endif
 498 {
 499         int i, err;
 500 #ifdef __KERNEL__
 501         int lustre_register_fs(void);
 502
 503         for (i = CAPA_SITE_CLIENT; i < CAPA_SITE_MAX; i++)
 504                 CFS_INIT_LIST_HEAD(&capa_list[i]);
 505 #endif
 506
 507         LCONSOLE_INFO("Lustre: Build Version: "BUILD_VERSION"\n");
 508
 509         cfs_spin_lock_init(&obd_types_lock);
 510         obd_zombie_impexp_init();
 511 #ifdef LPROCFS
 512         obd_memory = lprocfs_alloc_stats(OBD_STATS_NUM,
 513                                          LPROCFS_STATS_FLAG_NONE |
 514                                          LPROCFS_STATS_FLAG_IRQ_SAFE);
 515         if (obd_memory == NULL) {
 516                 CERROR("kmalloc of 'obd_memory' failed\n");
 517                 RETURN(-ENOMEM);
 518         }
 519
 520         lprocfs_counter_init(obd_memory, OBD_MEMORY_STAT,
 521                              LPROCFS_CNTR_AVGMINMAX,
 522                              "memused", "bytes");
 523         lprocfs_counter_init(obd_memory, OBD_MEMORY_PAGES_STAT,
 524                              LPROCFS_CNTR_AVGMINMAX,
 525                              "pagesused", "pages");
 526 #endif
 527         err = obd_init_checks();
 528         if (err == -EOVERFLOW)
 529                 return err;
 530
 531         class_init_uuidlist();
 532         err = class_handle_init();
 533         if (err)
 534                 return err;
 535
 536         CFS_INIT_LIST_HEAD(&obd_types);
 537
 538         err = cfs_psdev_register(&obd_psdev);
 539         if (err) {
 540                 CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err);
 541                 return err;
 542         }
 543
 544         /* This struct is already zeroed for us (static global) */
 545         for (i = 0; i < class_devno_max(); i++)
 546                 obd_devs[i] = NULL;
 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 #endif
 572
 573         return err;
 574 }
 575
 576 /* liblustre doesn't call cleanup_obdclass, apparently.  we carry on in this
 577  * ifdef to the end of the file to cover module and versioning goo.*/
 578 #ifdef __KERNEL__
 579 static void cleanup_obdclass(void)
 580 {
 581         int i;
 582         int lustre_unregister_fs(void);
 583         __u64 memory_leaked, pages_leaked;
 584         __u64 memory_max, pages_max;
 585         ENTRY;
 586
 587         lustre_unregister_fs();
 588
 589         cfs_psdev_deregister(&obd_psdev);
 590         for (i = 0; i < class_devno_max(); i++) {
 591                 struct obd_device *obd = class_num2obd(i);
 592                 if (obd && obd->obd_set_up &&
 593                     OBT(obd) && OBP(obd, detach)) {
 594                         /* XXX should this call generic detach otherwise? */
 595                         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 596                         OBP(obd, detach)(obd);
 597                 }
 598         }
 599         lu_global_fini();
 600
 601         obd_cleanup_caches();
 602         obd_sysctl_clean();
 603
 604         class_procfs_clean();
 605
 606         class_handle_cleanup();
 607         class_exit_uuidlist();
 608         obd_zombie_impexp_stop();
 609
 610         memory_leaked = obd_memory_sum();
 611         pages_leaked = obd_pages_sum();
 612
 613         memory_max = obd_memory_max();
 614         pages_max = obd_pages_max();
 615
 616         lprocfs_free_stats(&obd_memory);
 617         CDEBUG((memory_leaked) ? D_ERROR : D_INFO,
 618                "obd_memory max: "LPU64", leaked: "LPU64"\n",
 619                memory_max, memory_leaked);
 620         CDEBUG((pages_leaked) ? D_ERROR : D_INFO,
 621                "obd_memory_pages max: "LPU64", leaked: "LPU64"\n",
 622                pages_max, pages_leaked);
 623
 624         EXIT;
 625 }
 626
 627 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
 628 MODULE_DESCRIPTION("Lustre Class Driver Build Version: " BUILD_VERSION);
 629 MODULE_LICENSE("GPL");
 630
 631 cfs_module(obdclass, LUSTRE_VERSION_STRING, init_obdclass, cleanup_obdclass);
 632 #endif