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, 2012, Intel Corporation.
  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 #include <asm/atomic.h>
  39
  40 #include <obd_support.h>
  41 #include <obd_class.h>
  42 #include <lnet/lnetctl.h>
  43 #include <lustre_debug.h>
  44 #include <lprocfs_status.h>
  45 #include <lustre/lustre_build_version.h>
  46 #include <libcfs/list.h>
  47 #include <cl_object.h>
  48 #ifdef HAVE_SERVER_SUPPORT
  49 # include <dt_object.h>
  50 # include <md_object.h>
  51 #endif /* HAVE_SERVER_SUPPORT */
  52 #include <lustre_ioctl.h>
  53 #include "llog_internal.h"
  54
  55
  56 struct obd_device *obd_devs[MAX_OBD_DEVICES];
  57 EXPORT_SYMBOL(obd_devs);
  58 struct list_head obd_types;
  59 DEFINE_RWLOCK(obd_dev_lock);
  60
  61 __u64 obd_max_pages = 0;
  62 __u64 obd_max_alloc = 0;
  63
  64 static DEFINE_SPINLOCK(obd_updatemax_lock);
  65
  66 /* The following are visible and mutable through /proc/sys/lustre/. */
  67 unsigned int obd_alloc_fail_rate = 0;
  68 EXPORT_SYMBOL(obd_alloc_fail_rate);
  69 unsigned int obd_debug_peer_on_timeout;
  70 EXPORT_SYMBOL(obd_debug_peer_on_timeout);
  71 unsigned int obd_dump_on_timeout;
  72 EXPORT_SYMBOL(obd_dump_on_timeout);
  73 unsigned int obd_dump_on_eviction;
  74 EXPORT_SYMBOL(obd_dump_on_eviction);
  75 unsigned int obd_max_dirty_pages = 256;
  76 EXPORT_SYMBOL(obd_max_dirty_pages);
  77 atomic_t obd_dirty_pages;
  78 EXPORT_SYMBOL(obd_dirty_pages);
  79 unsigned int obd_timeout = OBD_TIMEOUT_DEFAULT;   /* seconds */
  80 EXPORT_SYMBOL(obd_timeout);
  81 unsigned int ldlm_timeout = LDLM_TIMEOUT_DEFAULT; /* seconds */
  82 EXPORT_SYMBOL(ldlm_timeout);
  83 unsigned int obd_timeout_set;
  84 EXPORT_SYMBOL(obd_timeout_set);
  85 unsigned int ldlm_timeout_set;
  86 EXPORT_SYMBOL(ldlm_timeout_set);
  87 /* bulk transfer timeout, give up after 100s by default */
  88 unsigned int bulk_timeout = 100; /* seconds */
  89 EXPORT_SYMBOL(bulk_timeout);
  90 /* Adaptive timeout defs here instead of ptlrpc module for /proc/sys/ access */
  91 unsigned int at_min = 0;
  92 EXPORT_SYMBOL(at_min);
  93 unsigned int at_max = 600;
  94 EXPORT_SYMBOL(at_max);
  95 unsigned int at_history = 600;
  96 EXPORT_SYMBOL(at_history);
  97 int at_early_margin = 5;
  98 EXPORT_SYMBOL(at_early_margin);
  99 int at_extra = 30;
 100 EXPORT_SYMBOL(at_extra);
 101
 102 atomic_t obd_dirty_transit_pages;
 103 EXPORT_SYMBOL(obd_dirty_transit_pages);
 104
 105 char obd_jobid_var[JOBSTATS_JOBID_VAR_MAX_LEN + 1] = JOBSTATS_DISABLE;
 106 EXPORT_SYMBOL(obd_jobid_var);
 107
 108 #ifdef LPROCFS
 109 struct lprocfs_stats *obd_memory = NULL;
 110 EXPORT_SYMBOL(obd_memory);
 111 #endif
 112
 113 /* Get jobid of current process by reading the environment variable
 114  * stored in between the "env_start" & "env_end" of task struct.
 115  *
 116  * TODO:
 117  * It's better to cache the jobid for later use if there is any
 118  * efficient way, the cl_env code probably could be reused for this
 119  * purpose.
 120  *
 121  * If some job scheduler doesn't store jobid in the "env_start/end",
 122  * then an upcall could be issued here to get the jobid by utilizing
 123  * the userspace tools/api. Then, the jobid must be cached.
 124  */
 125 int lustre_get_jobid(char *jobid)
 126 {
 127         int jobid_len = JOBSTATS_JOBID_SIZE;
 128         int rc = 0;
 129         ENTRY;
 130
 131         memset(jobid, 0, JOBSTATS_JOBID_SIZE);
 132         /* Jobstats isn't enabled */
 133         if (strcmp(obd_jobid_var, JOBSTATS_DISABLE) == 0)
 134                 RETURN(0);
 135
 136         /* Use process name + fsuid as jobid */
 137         if (strcmp(obd_jobid_var, JOBSTATS_PROCNAME_UID) == 0) {
 138                 snprintf(jobid, JOBSTATS_JOBID_SIZE, "%s.%u",
 139                          current_comm(),
 140                          from_kuid(&init_user_ns, current_fsuid()));
 141                 RETURN(0);
 142         }
 143
 144         rc = cfs_get_environ(obd_jobid_var, jobid, &jobid_len);
 145         if (rc) {
 146                 if (rc == -EOVERFLOW) {
 147                         /* For the PBS_JOBID and LOADL_STEP_ID keys (which are
 148                          * variable length strings instead of just numbers), it
 149                          * might make sense to keep the unique parts for JobID,
 150                          * instead of just returning an error.  That means a
 151                          * larger temp buffer for cfs_get_environ(), then
 152                          * truncating the string at some separator to fit into
 153                          * the specified jobid_len.  Fix later if needed. */
 154                         static bool printed;
 155                         if (unlikely(!printed)) {
 156                                 LCONSOLE_ERROR_MSG(0x16b, "%s value too large "
 157                                                    "for JobID buffer (%d)\n",
 158                                                    obd_jobid_var, jobid_len);
 159                                 printed = true;
 160                         }
 161                 } else {
 162                         CDEBUG((rc == -ENOENT || rc == -EINVAL ||
 163                                 rc == -EDEADLK) ? D_INFO : D_ERROR,
 164                                "Get jobid for (%s) failed: rc = %d\n",
 165                                obd_jobid_var, rc);
 166                 }
 167         }
 168         RETURN(rc);
 169 }
 170 EXPORT_SYMBOL(lustre_get_jobid);
 171
 172 int obd_alloc_fail(const void *ptr, const char *name, const char *type,
 173                    size_t size, const char *file, int line)
 174 {
 175         if (ptr == NULL ||
 176             (cfs_rand() & OBD_ALLOC_FAIL_MASK) < obd_alloc_fail_rate) {
 177                 CERROR("%s%salloc of %s ("LPU64" bytes) failed at %s:%d\n",
 178                        ptr ? "force " :"", type, name, (__u64)size, file,
 179                        line);
 180                 CERROR(LPU64" total bytes and "LPU64" total pages "
 181                        "("LPU64" bytes) allocated by Lustre, "
 182                        "%d total bytes by LNET\n",
 183                        obd_memory_sum(),
 184                        obd_pages_sum() << PAGE_CACHE_SHIFT,
 185                        obd_pages_sum(),
 186                         atomic_read(&libcfs_kmemory));
 187                 return 1;
 188         }
 189         return 0;
 190 }
 191 EXPORT_SYMBOL(obd_alloc_fail);
 192
 193 static int class_resolve_dev_name(__u32 len, const char *name)
 194 {
 195         int rc;
 196         int dev;
 197
 198         ENTRY;
 199         if (!len || !name) {
 200                 CERROR("No name passed,!\n");
 201                 GOTO(out, rc = -EINVAL);
 202         }
 203         if (name[len - 1] != 0) {
 204                 CERROR("Name not nul terminated!\n");
 205                 GOTO(out, rc = -EINVAL);
 206         }
 207
 208         CDEBUG(D_IOCTL, "device name %s\n", name);
 209         dev = class_name2dev(name);
 210         if (dev == -1) {
 211                 CDEBUG(D_IOCTL, "No device for name %s!\n", name);
 212                 GOTO(out, rc = -EINVAL);
 213         }
 214
 215         CDEBUG(D_IOCTL, "device name %s, dev %d\n", name, dev);
 216         rc = dev;
 217
 218 out:
 219         RETURN(rc);
 220 }
 221
 222 int class_handle_ioctl(unsigned int cmd, unsigned long arg)
 223 {
 224         char *buf = NULL;
 225         struct obd_ioctl_data *data;
 226         struct libcfs_debug_ioctl_data *debug_data;
 227         struct obd_device *obd = NULL;
 228         int err = 0, len = 0;
 229         ENTRY;
 230
 231         /* only for debugging */
 232         if (cmd == LIBCFS_IOC_DEBUG_MASK) {
 233                 debug_data = (struct libcfs_debug_ioctl_data*)arg;
 234                 libcfs_subsystem_debug = debug_data->subs;
 235                 libcfs_debug = debug_data->debug;
 236                 return 0;
 237         }
 238
 239         CDEBUG(D_IOCTL, "cmd = %x\n", cmd);
 240         if (obd_ioctl_getdata(&buf, &len, (void *)arg)) {
 241                 CERROR("OBD ioctl: data error\n");
 242                 RETURN(-EINVAL);
 243         }
 244         data = (struct obd_ioctl_data *)buf;
 245
 246         switch (cmd) {
 247         case OBD_IOC_PROCESS_CFG: {
 248                 struct lustre_cfg *lcfg;
 249
 250                 if (!data->ioc_plen1 || !data->ioc_pbuf1) {
 251                         CERROR("No config buffer passed!\n");
 252                         GOTO(out, err = -EINVAL);
 253                 }
 254                 OBD_ALLOC(lcfg, data->ioc_plen1);
 255                 if (lcfg == NULL)
 256                         GOTO(out, err = -ENOMEM);
 257                 err = copy_from_user(lcfg, data->ioc_pbuf1,
 258                                          data->ioc_plen1);
 259                 if (!err)
 260                         err = lustre_cfg_sanity_check(lcfg, data->ioc_plen1);
 261                 if (!err)
 262                         err = class_process_config(lcfg);
 263
 264                 OBD_FREE(lcfg, data->ioc_plen1);
 265                 GOTO(out, err);
 266         }
 267
 268         case OBD_GET_VERSION:
 269                 if (!data->ioc_inlbuf1) {
 270                         CERROR("No buffer passed in ioctl\n");
 271                         GOTO(out, err = -EINVAL);
 272                 }
 273
 274                 if (strlen(BUILD_VERSION) + 1 > data->ioc_inllen1) {
 275                         CERROR("ioctl buffer too small to hold version\n");
 276                         GOTO(out, err = -EINVAL);
 277                 }
 278
 279                 memcpy(data->ioc_bulk, BUILD_VERSION,
 280                        strlen(BUILD_VERSION) + 1);
 281
 282                 err = obd_ioctl_popdata((void *)arg, data, len);
 283                 if (err)
 284                         err = -EFAULT;
 285                 GOTO(out, err);
 286
 287         case OBD_IOC_NAME2DEV: {
 288                 /* Resolve a device name.  This does not change the
 289                  * currently selected device.
 290                  */
 291                 int dev;
 292
 293                 dev = class_resolve_dev_name(data->ioc_inllen1,
 294                                              data->ioc_inlbuf1);
 295                 data->ioc_dev = dev;
 296                 if (dev < 0)
 297                         GOTO(out, err = -EINVAL);
 298
 299                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 300                 if (err)
 301                         err = -EFAULT;
 302                 GOTO(out, err);
 303         }
 304
 305         case OBD_IOC_UUID2DEV: {
 306                 /* Resolve a device uuid.  This does not change the
 307                  * currently selected device.
 308                  */
 309                 int dev;
 310                 struct obd_uuid uuid;
 311
 312                 if (!data->ioc_inllen1 || !data->ioc_inlbuf1) {
 313                         CERROR("No UUID passed!\n");
 314                         GOTO(out, err = -EINVAL);
 315                 }
 316                 if (data->ioc_inlbuf1[data->ioc_inllen1 - 1] != 0) {
 317                         CERROR("UUID not NUL terminated!\n");
 318                         GOTO(out, err = -EINVAL);
 319                 }
 320
 321                 CDEBUG(D_IOCTL, "device name %s\n", data->ioc_inlbuf1);
 322                 obd_str2uuid(&uuid, data->ioc_inlbuf1);
 323                 dev = class_uuid2dev(&uuid);
 324                 data->ioc_dev = dev;
 325                 if (dev == -1) {
 326                         CDEBUG(D_IOCTL, "No device for UUID %s!\n",
 327                                data->ioc_inlbuf1);
 328                         GOTO(out, err = -EINVAL);
 329                 }
 330
 331                 CDEBUG(D_IOCTL, "device name %s, dev %d\n", data->ioc_inlbuf1,
 332                        dev);
 333                 err = obd_ioctl_popdata((void *)arg, data, sizeof(*data));
 334                 if (err)
 335                         err = -EFAULT;
 336                 GOTO(out, err);
 337         }
 338
 339         case OBD_IOC_GETDEVICE: {
 340                 int     index = data->ioc_count;
 341                 char    *status, *str;
 342
 343                 if (!data->ioc_inlbuf1) {
 344                         CERROR("No buffer passed in ioctl\n");
 345                         GOTO(out, err = -EINVAL);
 346                 }
 347                 if (data->ioc_inllen1 < 128) {
 348                         CERROR("ioctl buffer too small to hold version\n");
 349                         GOTO(out, err = -EINVAL);
 350                 }
 351
 352                 obd = class_num2obd(index);
 353                 if (!obd)
 354                         GOTO(out, err = -ENOENT);
 355
 356                 if (obd->obd_stopping)
 357                         status = "ST";
 358                 else if (obd->obd_set_up)
 359                         status = "UP";
 360                 else if (obd->obd_attached)
 361                         status = "AT";
 362                 else
 363                         status = "--";
 364                 str = (char *)data->ioc_bulk;
 365                 snprintf(str, len - sizeof(*data), "%3d %s %s %s %s %d",
 366                          (int)index, status, obd->obd_type->typ_name,
 367                          obd->obd_name, obd->obd_uuid.uuid,
 368                          atomic_read(&obd->obd_refcount));
 369                 err = obd_ioctl_popdata((void *)arg, data, len);
 370
 371                 GOTO(out, err = 0);
 372         }
 373
 374         }
 375
 376         if (data->ioc_dev == OBD_DEV_BY_DEVNAME) {
 377                 if (data->ioc_inllen4 <= 0 || data->ioc_inlbuf4 == NULL)
 378                         GOTO(out, err = -EINVAL);
 379                 if (strnlen(data->ioc_inlbuf4, MAX_OBD_NAME) >= MAX_OBD_NAME)
 380                         GOTO(out, err = -EINVAL);
 381                 obd = class_name2obd(data->ioc_inlbuf4);
 382         } else if (data->ioc_dev < class_devno_max()) {
 383                 obd = class_num2obd(data->ioc_dev);
 384         } else {
 385                 CERROR("OBD ioctl: No device\n");
 386                 GOTO(out, err = -EINVAL);
 387         }
 388
 389         if (obd == NULL) {
 390                 CERROR("OBD ioctl : No Device %d\n", data->ioc_dev);
 391                 GOTO(out, err = -EINVAL);
 392         }
 393         LASSERT(obd->obd_magic == OBD_DEVICE_MAGIC);
 394
 395         if (!obd->obd_set_up || obd->obd_stopping) {
 396                 CERROR("OBD ioctl: device not setup %d \n", data->ioc_dev);
 397                 GOTO(out, err = -EINVAL);
 398         }
 399
 400         switch(cmd) {
 401         case OBD_IOC_NO_TRANSNO: {
 402                 if (!obd->obd_attached) {
 403                         CERROR("Device %d not attached\n", obd->obd_minor);
 404                         GOTO(out, err = -ENODEV);
 405                 }
 406                 CDEBUG(D_HA, "%s: disabling committed-transno notification\n",
 407                        obd->obd_name);
 408                 obd->obd_no_transno = 1;
 409                 GOTO(out, err = 0);
 410         }
 411
 412         default: {
 413                 err = obd_iocontrol(cmd, obd->obd_self_export, len, data, NULL);
 414                 if (err)
 415                         GOTO(out, err);
 416
 417                 err = obd_ioctl_popdata((void *)arg, data, len);
 418                 if (err)
 419                         err = -EFAULT;
 420                 GOTO(out, err);
 421         }
 422         }
 423
 424  out:
 425         if (buf)
 426                 obd_ioctl_freedata(buf, len);
 427         RETURN(err);
 428 } /* class_handle_ioctl */
 429
 430 extern struct miscdevice obd_psdev;
 431
 432 #define OBD_INIT_CHECK
 433 #ifdef OBD_INIT_CHECK
 434 static int obd_init_checks(void)
 435 {
 436         __u64 u64val, div64val;
 437         char buf[64];
 438         int len, ret = 0;
 439
 440         CDEBUG(D_INFO, "LPU64=%s, LPD64=%s, LPX64=%s\n", LPU64, LPD64, LPX64);
 441
 442         CDEBUG(D_INFO, "OBD_OBJECT_EOF = "LPX64"\n", (__u64)OBD_OBJECT_EOF);
 443
 444         u64val = OBD_OBJECT_EOF;
 445         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 446         if (u64val != OBD_OBJECT_EOF) {
 447                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 448                        u64val, (int)sizeof(u64val));
 449                 ret = -EINVAL;
 450         }
 451         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 452         if (len != 18) {
 453                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 454                 ret = -EINVAL;
 455         }
 456
 457         div64val = OBD_OBJECT_EOF;
 458         CDEBUG(D_INFO, "u64val OBD_OBJECT_EOF = "LPX64"\n", u64val);
 459         if (u64val != OBD_OBJECT_EOF) {
 460                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 461                        u64val, (int)sizeof(u64val));
 462                 ret = -EOVERFLOW;
 463         }
 464         if (u64val >> 8 != OBD_OBJECT_EOF >> 8) {
 465                 CERROR("__u64 "LPX64"(%d) != 0xffffffffffffffff\n",
 466                        u64val, (int)sizeof(u64val));
 467                 return -EOVERFLOW;
 468         }
 469         if (do_div(div64val, 256) != (u64val & 255)) {
 470                 CERROR("do_div("LPX64",256) != "LPU64"\n", u64val, u64val &255);
 471                 return -EOVERFLOW;
 472         }
 473         if (u64val >> 8 != div64val) {
 474                 CERROR("do_div("LPX64",256) "LPU64" != "LPU64"\n",
 475                        u64val, div64val, u64val >> 8);
 476                 return -EOVERFLOW;
 477         }
 478         len = snprintf(buf, sizeof(buf), LPX64, u64val);
 479         if (len != 18) {
 480                 CWARN("LPX64 wrong length! strlen(%s)=%d != 18\n", buf, len);
 481                 ret = -EINVAL;
 482         }
 483         len = snprintf(buf, sizeof(buf), LPU64, u64val);
 484         if (len != 20) {
 485                 CWARN("LPU64 wrong length! strlen(%s)=%d != 20\n", buf, len);
 486                 ret = -EINVAL;
 487         }
 488         len = snprintf(buf, sizeof(buf), LPD64, u64val);
 489         if (len != 2) {
 490                 CWARN("LPD64 wrong length! strlen(%s)=%d != 2\n", buf, len);
 491                 ret = -EINVAL;
 492         }
 493         if ((u64val & ~CFS_PAGE_MASK) >= PAGE_CACHE_SIZE) {
 494                 CWARN("mask failed: u64val "LPU64" >= "LPU64"\n", u64val,
 495                       (__u64)PAGE_CACHE_SIZE);
 496                 ret = -EINVAL;
 497         }
 498
 499         return ret;
 500 }
 501 #else
 502 #define obd_init_checks() do {} while(0)
 503 #endif
 504
 505 extern int class_procfs_init(void);
 506 extern int class_procfs_clean(void);
 507
 508 static int __init init_obdclass(void)
 509 {
 510         int i, err;
 511         int lustre_register_fs(void);
 512
 513         for (i = CAPA_SITE_CLIENT; i < CAPA_SITE_MAX; i++)
 514                 INIT_LIST_HEAD(&capa_list[i]);
 515
 516         LCONSOLE_INFO("Lustre: Build Version: "BUILD_VERSION"\n");
 517
 518         spin_lock_init(&obd_types_lock);
 519         obd_zombie_impexp_init();
 520 #ifdef LPROCFS
 521         obd_memory = lprocfs_alloc_stats(OBD_STATS_NUM,
 522                                          LPROCFS_STATS_FLAG_NONE |
 523                                          LPROCFS_STATS_FLAG_IRQ_SAFE);
 524         if (obd_memory == NULL) {
 525                 CERROR("kmalloc of 'obd_memory' failed\n");
 526                 RETURN(-ENOMEM);
 527         }
 528
 529         lprocfs_counter_init(obd_memory, OBD_MEMORY_STAT,
 530                              LPROCFS_CNTR_AVGMINMAX,
 531                              "memused", "bytes");
 532         lprocfs_counter_init(obd_memory, OBD_MEMORY_PAGES_STAT,
 533                              LPROCFS_CNTR_AVGMINMAX,
 534                              "pagesused", "pages");
 535 #endif
 536         err = obd_init_checks();
 537         if (err == -EOVERFLOW)
 538                 return err;
 539
 540         class_init_uuidlist();
 541         err = class_handle_init();
 542         if (err)
 543                 return err;
 544
 545         INIT_LIST_HEAD(&obd_types);
 546
 547         err = misc_register(&obd_psdev);
 548         if (err) {
 549                 CERROR("cannot register %d err %d\n", OBD_DEV_MINOR, err);
 550                 return err;
 551         }
 552
 553         /* This struct is already zeroed for us (static global) */
 554         for (i = 0; i < class_devno_max(); i++)
 555                 obd_devs[i] = NULL;
 556
 557         /* Default the dirty page cache cap to 1/2 of system memory.
 558          * For clients with less memory, a larger fraction is needed
 559          * for other purposes (mostly for BGL). */
 560         if (totalram_pages <= 512 << (20 - PAGE_CACHE_SHIFT))
 561                 obd_max_dirty_pages = totalram_pages / 4;
 562         else
 563                 obd_max_dirty_pages = totalram_pages / 2;
 564
 565         err = obd_init_caches();
 566         if (err)
 567                 return err;
 568         err = class_procfs_init();
 569         if (err)
 570                 return err;
 571
 572         err = lu_global_init();
 573         if (err)
 574                 return err;
 575
 576         err = lu_capainfo_init();
 577         if (err)
 578                 return err;
 579
 580         err = cl_global_init();
 581         if (err != 0)
 582                 return err;
 583
 584 #ifdef HAVE_SERVER_SUPPORT
 585         err = dt_global_init();
 586         if (err != 0)
 587                 return err;
 588
 589         err = lu_ucred_global_init();
 590         if (err != 0)
 591                 return err;
 592 #endif /* HAVE_SERVER_SUPPORT */
 593
 594         err = llog_info_init();
 595         if (err)
 596                 return err;
 597
 598         err = lustre_register_fs();
 599
 600         return err;
 601 }
 602
 603 void obd_update_maxusage(void)
 604 {
 605         __u64 max1, max2;
 606
 607         max1 = obd_pages_sum();
 608         max2 = obd_memory_sum();
 609
 610         spin_lock(&obd_updatemax_lock);
 611         if (max1 > obd_max_pages)
 612                 obd_max_pages = max1;
 613         if (max2 > obd_max_alloc)
 614                 obd_max_alloc = max2;
 615         spin_unlock(&obd_updatemax_lock);
 616 }
 617 EXPORT_SYMBOL(obd_update_maxusage);
 618
 619 #ifdef LPROCFS
 620 __u64 obd_memory_max(void)
 621 {
 622         __u64 ret;
 623
 624         spin_lock(&obd_updatemax_lock);
 625         ret = obd_max_alloc;
 626         spin_unlock(&obd_updatemax_lock);
 627
 628         return ret;
 629 }
 630 EXPORT_SYMBOL(obd_memory_max);
 631
 632 __u64 obd_pages_max(void)
 633 {
 634         __u64 ret;
 635
 636         spin_lock(&obd_updatemax_lock);
 637         ret = obd_max_pages;
 638         spin_unlock(&obd_updatemax_lock);
 639
 640         return ret;
 641 }
 642 EXPORT_SYMBOL(obd_pages_max);
 643 #endif /* LPROCFS */
 644
 645 /* liblustre doesn't call cleanup_obdclass, apparently.  we carry on in this
 646  * ifdef to the end of the file to cover module and versioning goo.*/
 647 static void cleanup_obdclass(void)
 648 {
 649         int lustre_unregister_fs(void);
 650         __u64 memory_leaked, pages_leaked;
 651         __u64 memory_max, pages_max;
 652         ENTRY;
 653
 654         lustre_unregister_fs();
 655
 656         misc_deregister(&obd_psdev);
 657         llog_info_fini();
 658 #ifdef HAVE_SERVER_SUPPORT
 659         lu_ucred_global_fini();
 660         dt_global_fini();
 661 #endif /* HAVE_SERVER_SUPPORT */
 662         cl_global_fini();
 663         lu_capainfo_fini();
 664         lu_global_fini();
 665
 666         obd_cleanup_caches();
 667         obd_sysctl_clean();
 668
 669         class_procfs_clean();
 670
 671         class_handle_cleanup();
 672         class_exit_uuidlist();
 673         obd_zombie_impexp_stop();
 674
 675         memory_leaked = obd_memory_sum();
 676         pages_leaked = obd_pages_sum();
 677
 678         memory_max = obd_memory_max();
 679         pages_max = obd_pages_max();
 680
 681         lprocfs_free_stats(&obd_memory);
 682         CDEBUG((memory_leaked) ? D_ERROR : D_INFO,
 683                "obd_memory max: "LPU64", leaked: "LPU64"\n",
 684                memory_max, memory_leaked);
 685         CDEBUG((pages_leaked) ? D_ERROR : D_INFO,
 686                "obd_memory_pages max: "LPU64", leaked: "LPU64"\n",
 687                pages_max, pages_leaked);
 688
 689         EXIT;
 690 }
 691
 692 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
 693 MODULE_DESCRIPTION("Lustre Class Driver Build Version: " BUILD_VERSION);
 694 MODULE_LICENSE("GPL");
 695
 696 cfs_module(obdclass, LUSTRE_VERSION_STRING, init_obdclass, cleanup_obdclass);