lustre/mdt/mdt_lproc.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.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2011, 2017, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  *
  32  * lustre/mdt/mdt_lproc.c
  33  *
  34  * Author: Lai Siyao <lsy@clusterfs.com>
  35  * Author: Fan Yong <fanyong@clusterfs.com>
  36  */
  37
  38 #define DEBUG_SUBSYSTEM S_MDS
  39
  40 #include <linux/version.h>
  41 #include <asm/statfs.h>
  42
  43 #include <linux/module.h>
  44 #include <uapi/linux/lnet/nidstr.h>
  45 /* LUSTRE_VERSION_CODE */
  46 #include <uapi/linux/lustre/lustre_ver.h>
  47 /*
  48  * struct OBD_{ALLOC,FREE}*()
  49  * MDT_FAIL_CHECK
  50  */
  51 #include <obd_support.h>
  52 /* struct obd_export */
  53 #include <lustre_export.h>
  54 /* struct obd_device */
  55 #include <obd.h>
  56 #include <obd_class.h>
  57 #include <lustre_mds.h>
  58 #include <lprocfs_status.h>
  59 #include "mdt_internal.h"
  60
  61 /**
  62  * The rename stats output would be YAML formats, like
  63  * rename_stats:
  64  * - snapshot_time: 1234567890.123456
  65  * - same_dir:
  66  *     4kB: { samples: 1230, pct: 33, cum_pct: 45 }
  67  *     8kB: { samples: 1242, pct: 33, cum_pct: 78 }
  68  *     16kB: { samples: 132, pct: 3, cum_pct: 81 }
  69  * - crossdir_src:
  70  *     4kB: { samples: 123, pct: 33, cum_pct: 45 }
  71  *     8kB: { samples: 124, pct: 33, cum_pct: 78 }
  72  *     16kB: { samples: 12, pct: 3, cum_pct: 81 }
  73  * - crossdir_tgt:
  74  *     4kB: { samples: 123, pct: 33, cum_pct: 45 }
  75  *     8kB: { samples: 124, pct: 33, cum_pct: 78 }
  76  *     16kB: { samples: 12, pct: 3, cum_pct: 81 }
  77  **/
  78
  79 static void display_rename_stats(struct seq_file *seq, char *name,
  80                                  struct obd_histogram *hist)
  81 {
  82         unsigned long tot, t, cum = 0;
  83         int i;
  84
  85         tot = lprocfs_oh_sum(hist);
  86         if (tot > 0)
  87                 seq_printf(seq, "- %-15s\n", name);
  88         /* dir size start from 4K, start i from 10(2^10) here */
  89         for (i = 0; i < OBD_HIST_MAX; i++) {
  90                 t = hist->oh_buckets[i];
  91                 cum += t;
  92                 if (cum == 0)
  93                         continue;
  94
  95                 if (i < 10)
  96                         seq_printf(seq, "%6s%d%s", " ", 1<< i, "bytes:");
  97                 else if (i < 20)
  98                         seq_printf(seq, "%6s%d%s", " ", 1<<(i-10), "KB:");
  99                 else
 100                         seq_printf(seq, "%6s%d%s", " ", 1<<(i-20), "MB:");
 101
 102                 seq_printf(seq, " { sample: %3lu, pct: %3u, cum_pct: %3u }\n",
 103                            t, pct(t, tot), pct(cum, tot));
 104
 105                 if (cum == tot)
 106                         break;
 107         }
 108 }
 109
 110 static void rename_stats_show(struct seq_file *seq,
 111                               struct rename_stats *rename_stats)
 112 {
 113         struct timespec64 now;
 114
 115         /* this sampling races with updates */
 116         ktime_get_real_ts64(&now);
 117         seq_printf(seq, "rename_stats:\n");
 118         seq_printf(seq, "- %-15s %llu.%9lu\n", "snapshot_time:",
 119                    (s64)now.tv_sec, now.tv_nsec);
 120
 121         display_rename_stats(seq, "same_dir",
 122                              &rename_stats->hist[RENAME_SAMEDIR_SIZE]);
 123         display_rename_stats(seq, "crossdir_src",
 124                              &rename_stats->hist[RENAME_CROSSDIR_SRC_SIZE]);
 125         display_rename_stats(seq, "crossdir_tgt",
 126                              &rename_stats->hist[RENAME_CROSSDIR_TGT_SIZE]);
 127 }
 128
 129 static int mdt_rename_stats_seq_show(struct seq_file *seq, void *v)
 130 {
 131         struct mdt_device *mdt = seq->private;
 132
 133         rename_stats_show(seq, &mdt->mdt_rename_stats);
 134
 135         return 0;
 136 }
 137
 138 static ssize_t
 139 mdt_rename_stats_seq_write(struct file *file, const char __user *buf,
 140                            size_t len, loff_t *off)
 141 {
 142         struct seq_file *seq = file->private_data;
 143         struct mdt_device *mdt = seq->private;
 144         int i;
 145
 146         for (i = 0; i < RENAME_LAST; i++)
 147                 lprocfs_oh_clear(&mdt->mdt_rename_stats.hist[i]);
 148
 149         return len;
 150 }
 151 LPROC_SEQ_FOPS(mdt_rename_stats);
 152
 153 static int lproc_mdt_attach_rename_seqstat(struct mdt_device *mdt)
 154 {
 155         int i;
 156
 157         for (i = 0; i < RENAME_LAST; i++)
 158                 spin_lock_init(&mdt->mdt_rename_stats.hist[i].oh_lock);
 159
 160         return lprocfs_obd_seq_create(mdt2obd_dev(mdt), "rename_stats", 0644,
 161                                       &mdt_rename_stats_fops, mdt);
 162 }
 163
 164 void mdt_rename_counter_tally(struct mdt_thread_info *info,
 165                               struct mdt_device *mdt,
 166                               struct ptlrpc_request *req,
 167                               struct mdt_object *src,
 168                               struct mdt_object *tgt)
 169 {
 170         struct md_attr *ma = &info->mti_attr;
 171         struct rename_stats *rstats = &mdt->mdt_rename_stats;
 172         int rc;
 173
 174         ma->ma_need = MA_INODE;
 175         ma->ma_valid = 0;
 176         rc = mo_attr_get(info->mti_env, mdt_object_child(src), ma);
 177         if (rc) {
 178                 CERROR("%s: "DFID" attr_get, rc = %d\n",
 179                        mdt_obd_name(mdt), PFID(mdt_object_fid(src)), rc);
 180                 return;
 181         }
 182
 183         if (src == tgt) {
 184                 mdt_counter_incr(req, LPROC_MDT_SAMEDIR_RENAME);
 185                 lprocfs_oh_tally_log2(&rstats->hist[RENAME_SAMEDIR_SIZE],
 186                                       (unsigned int)ma->ma_attr.la_size);
 187                 return;
 188         }
 189
 190         mdt_counter_incr(req, LPROC_MDT_CROSSDIR_RENAME);
 191         lprocfs_oh_tally_log2(&rstats->hist[RENAME_CROSSDIR_SRC_SIZE],
 192                               (unsigned int)ma->ma_attr.la_size);
 193
 194         ma->ma_need = MA_INODE;
 195         ma->ma_valid = 0;
 196         rc = mo_attr_get(info->mti_env, mdt_object_child(tgt), ma);
 197         if (rc) {
 198                 CERROR("%s: "DFID" attr_get, rc = %d\n",
 199                        mdt_obd_name(mdt), PFID(mdt_object_fid(tgt)), rc);
 200                 return;
 201         }
 202
 203         lprocfs_oh_tally_log2(&rstats->hist[RENAME_CROSSDIR_TGT_SIZE],
 204                               (unsigned int)ma->ma_attr.la_size);
 205 }
 206
 207 static ssize_t identity_expire_show(struct kobject *kobj,
 208                                     struct attribute *attr, char *buf)
 209 {
 210         struct obd_device *obd = container_of(kobj, struct obd_device,
 211                                               obd_kset.kobj);
 212         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 213
 214         return scnprintf(buf, PAGE_SIZE, "%lld\n",
 215                          mdt->mdt_identity_cache->uc_entry_expire);
 216 }
 217
 218 static ssize_t identity_expire_store(struct kobject *kobj,
 219                                      struct attribute *attr,
 220                                      const char *buffer, size_t count)
 221 {
 222         struct obd_device *obd = container_of(kobj, struct obd_device,
 223                                               obd_kset.kobj);
 224         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 225         time64_t val;
 226         int rc;
 227
 228         rc = kstrtoll(buffer, 10, &val);
 229         if (rc)
 230                 return rc;
 231
 232         if (val < 0)
 233                 return -ERANGE;
 234
 235         mdt->mdt_identity_cache->uc_entry_expire = val;
 236
 237         return count;
 238 }
 239 LUSTRE_RW_ATTR(identity_expire);
 240
 241 static ssize_t identity_acquire_expire_show(struct kobject *kobj,
 242                                             struct attribute *attr, char *buf)
 243 {
 244         struct obd_device *obd = container_of(kobj, struct obd_device,
 245                                               obd_kset.kobj);
 246         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 247
 248         return scnprintf(buf, PAGE_SIZE, "%lld\n",
 249                          mdt->mdt_identity_cache->uc_acquire_expire);
 250 }
 251
 252 static ssize_t identity_acquire_expire_store(struct kobject *kobj,
 253                                              struct attribute *attr,
 254                                              const char *buffer, size_t count)
 255 {
 256         struct obd_device *obd = container_of(kobj, struct obd_device,
 257                                               obd_kset.kobj);
 258         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 259         time64_t val;
 260         int rc;
 261
 262         rc = kstrtoll(buffer, 0, &val);
 263         if (rc)
 264                 return rc;
 265
 266         if (val < 0 || val > INT_MAX)
 267                 return -ERANGE;
 268
 269         mdt->mdt_identity_cache->uc_acquire_expire = val;
 270
 271         return count;
 272 }
 273 LUSTRE_RW_ATTR(identity_acquire_expire);
 274
 275 static ssize_t identity_upcall_show(struct kobject *kobj,
 276                                     struct attribute *attr, char *buf)
 277 {
 278         struct obd_device *obd = container_of(kobj, struct obd_device,
 279                                               obd_kset.kobj);
 280         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 281         struct upcall_cache *hash = mdt->mdt_identity_cache;
 282         int rc;
 283
 284         down_read(&hash->uc_upcall_rwsem);
 285         rc = scnprintf(buf, PAGE_SIZE, "%s\n", hash->uc_upcall);
 286         up_read(&hash->uc_upcall_rwsem);
 287         return rc;
 288 }
 289
 290 static ssize_t identity_upcall_store(struct kobject *kobj,
 291                                      struct attribute *attr,
 292                                      const char *buffer, size_t count)
 293 {
 294         struct obd_device *obd = container_of(kobj, struct obd_device,
 295                                               obd_kset.kobj);
 296         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 297         struct upcall_cache *hash = mdt->mdt_identity_cache;
 298
 299         if (count >= UC_CACHE_UPCALL_MAXPATH) {
 300                 CERROR("%s: identity upcall too long\n", mdt_obd_name(mdt));
 301                 return -EINVAL;
 302         }
 303
 304         /* Remove any extraneous bits from the upcall (e.g. linefeeds) */
 305         down_write(&hash->uc_upcall_rwsem);
 306         count = sscanf(buffer, "%s", hash->uc_upcall);
 307         up_write(&hash->uc_upcall_rwsem);
 308
 309         if (strcmp(hash->uc_name, mdt_obd_name(mdt)) != 0)
 310                 CWARN("%s: write to upcall name %s\n",
 311                       mdt_obd_name(mdt), hash->uc_upcall);
 312
 313         if (strcmp(hash->uc_upcall, "NONE") == 0 && mdt->mdt_opts.mo_acl)
 314                 CWARN("%s: disable \"identity_upcall\" with ACL enabled maybe "
 315                       "cause unexpected \"EACCESS\"\n", mdt_obd_name(mdt));
 316
 317         CDEBUG(D_CONFIG, "%s: identity upcall set to %s\n", mdt_obd_name(mdt),
 318                hash->uc_upcall);
 319         RETURN(count);
 320 }
 321 LUSTRE_RW_ATTR(identity_upcall);
 322
 323 static ssize_t identity_flush_store(struct kobject *kobj,
 324                                     struct attribute *attr,
 325                                     const char *buffer, size_t count)
 326 {
 327         struct obd_device *obd = container_of(kobj, struct obd_device,
 328                                               obd_kset.kobj);
 329         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 330         int uid;
 331         int rc;
 332
 333         rc = kstrtoint(buffer, 0, &uid);
 334         if (rc)
 335                 return rc;
 336
 337         mdt_flush_identity(mdt->mdt_identity_cache, uid);
 338         return count;
 339 }
 340 LUSTRE_WO_ATTR(identity_flush);
 341
 342 static ssize_t
 343 lprocfs_identity_info_seq_write(struct file *file, const char __user *buffer,
 344                                 size_t count, void *data)
 345 {
 346         struct seq_file   *m = file->private_data;
 347         struct obd_device *obd = m->private;
 348         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 349         struct identity_downcall_data *param;
 350         int size = sizeof(*param), rc, checked = 0;
 351
 352 again:
 353         if (count < size) {
 354                 CERROR("%s: invalid data count = %lu, size = %d\n",
 355                        mdt_obd_name(mdt), (unsigned long) count, size);
 356                 return -EINVAL;
 357         }
 358
 359         OBD_ALLOC(param, size);
 360         if (param == NULL)
 361                 return -ENOMEM;
 362
 363         if (copy_from_user(param, buffer, size)) {
 364                 CERROR("%s: bad identity data\n", mdt_obd_name(mdt));
 365                 GOTO(out, rc = -EFAULT);
 366         }
 367
 368         if (checked == 0) {
 369                 checked = 1;
 370                 if (param->idd_magic != IDENTITY_DOWNCALL_MAGIC) {
 371                         CERROR("%s: MDS identity downcall bad params\n",
 372                                mdt_obd_name(mdt));
 373                         GOTO(out, rc = -EINVAL);
 374                 }
 375
 376                 if (param->idd_nperms > N_PERMS_MAX) {
 377                         CERROR("%s: perm count %d more than maximum %d\n",
 378                                mdt_obd_name(mdt), param->idd_nperms,
 379                                N_PERMS_MAX);
 380                         GOTO(out, rc = -EINVAL);
 381                 }
 382
 383                 if (param->idd_ngroups > NGROUPS_MAX) {
 384                         CERROR("%s: group count %d more than maximum %d\n",
 385                                mdt_obd_name(mdt), param->idd_ngroups,
 386                                NGROUPS_MAX);
 387                         GOTO(out, rc = -EINVAL);
 388                 }
 389
 390                 if (param->idd_ngroups) {
 391                         rc = param->idd_ngroups; /* save idd_ngroups */
 392                         OBD_FREE(param, size);
 393                         size = offsetof(struct identity_downcall_data,
 394                                         idd_groups[rc]);
 395                         goto again;
 396                 }
 397         }
 398
 399         rc = upcall_cache_downcall(mdt->mdt_identity_cache, param->idd_err,
 400                                    param->idd_uid, param);
 401
 402 out:
 403         if (param != NULL)
 404                 OBD_FREE(param, size);
 405
 406         return rc ? rc : count;
 407 }
 408 LPROC_SEQ_FOPS_WR_ONLY(mdt, identity_info);
 409
 410 static int mdt_site_stats_seq_show(struct seq_file *m, void *data)
 411 {
 412         struct obd_device *obd = m->private;
 413         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 414
 415         return lu_site_stats_seq_print(mdt_lu_site(mdt), m);
 416 }
 417 LPROC_SEQ_FOPS_RO(mdt_site_stats);
 418
 419 #define BUFLEN (UUID_MAX + 4)
 420
 421 static ssize_t
 422 lprocfs_mds_evict_client_seq_write(struct file *file, const char __user *buf,
 423                                    size_t count, loff_t *off)
 424 {
 425         struct seq_file   *m = file->private_data;
 426         struct obd_device *obd = m->private;
 427         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 428         char *kbuf;
 429         char *tmpbuf;
 430         int rc = 0;
 431
 432         OBD_ALLOC(kbuf, BUFLEN);
 433         if (kbuf == NULL)
 434                 return -ENOMEM;
 435
 436         /*
 437          * OBD_ALLOC() will zero kbuf, but we only copy BUFLEN - 1
 438          * bytes into kbuf, to ensure that the string is NUL-terminated.
 439          * UUID_MAX should include a trailing NUL already.
 440          */
 441         if (copy_from_user(kbuf, buf, min_t(unsigned long, BUFLEN - 1, count)))
 442                 GOTO(out, rc = -EFAULT);
 443         tmpbuf = cfs_firststr(kbuf, min_t(unsigned long, BUFLEN - 1, count));
 444
 445         if (strncmp(tmpbuf, "nid:", 4) != 0) {
 446                 count = lprocfs_evict_client_seq_write(file, buf, count, off);
 447                 goto out;
 448         }
 449
 450         if (mdt->mdt_opts.mo_evict_tgt_nids) {
 451                 rc = obd_set_info_async(NULL, mdt->mdt_child_exp,
 452                                         sizeof(KEY_EVICT_BY_NID),
 453                                         KEY_EVICT_BY_NID,
 454                                         strlen(tmpbuf + 4) + 1,
 455                                         tmpbuf + 4, NULL);
 456                 if (rc)
 457                         CERROR("Failed to evict nid %s from OSTs: rc %d\n",
 458                                tmpbuf + 4, rc);
 459         }
 460
 461         /* See the comments in function lprocfs_wr_evict_client()
 462          * in ptlrpc/lproc_ptlrpc.c for details. - jay */
 463         class_incref(obd, __func__, current);
 464         obd_export_evict_by_nid(obd, tmpbuf + 4);
 465         class_decref(obd, __func__, current);
 466
 467
 468 out:
 469         OBD_FREE(kbuf, BUFLEN);
 470         return rc < 0 ? rc : count;
 471 }
 472
 473 #undef BUFLEN
 474
 475 static ssize_t evict_tgt_nids_show(struct kobject *kobj,
 476                                    struct attribute *attr, char *buf)
 477 {
 478         struct obd_device *obd = container_of(kobj, struct obd_device,
 479                                               obd_kset.kobj);
 480         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 481
 482         return scnprintf(buf, PAGE_SIZE, "%u\n",
 483                          mdt->mdt_opts.mo_evict_tgt_nids);
 484 }
 485
 486 static ssize_t evict_tgt_nids_store(struct kobject *kobj,
 487                                     struct attribute *attr, const char *buffer,
 488                                     size_t count)
 489 {
 490         struct obd_device *obd = container_of(kobj, struct obd_device,
 491                                               obd_kset.kobj);
 492         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 493         bool val;
 494         int rc;
 495
 496         rc = kstrtobool(buffer, &val);
 497         if (rc)
 498                 return rc;
 499
 500         mdt->mdt_opts.mo_evict_tgt_nids = val;
 501         return count;
 502 }
 503 LUSTRE_RW_ATTR(evict_tgt_nids);
 504
 505 static ssize_t commit_on_sharing_show(struct kobject *kobj,
 506                                       struct attribute *attr, char *buf)
 507 {
 508         struct obd_device *obd = container_of(kobj, struct obd_device,
 509                                               obd_kset.kobj);
 510         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 511
 512         return scnprintf(buf, PAGE_SIZE, "%u\n", mdt_cos_is_enabled(mdt));
 513 }
 514
 515 static ssize_t commit_on_sharing_store(struct kobject *kobj,
 516                                        struct attribute *attr,
 517                                        const char *buffer, size_t count)
 518 {
 519         struct obd_device *obd = container_of(kobj, struct obd_device,
 520                                               obd_kset.kobj);
 521         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 522         bool val;
 523         int rc;
 524
 525         rc = kstrtobool(buffer, &val);
 526         if (rc)
 527                 return rc;
 528
 529         mdt_enable_cos(mdt, val);
 530         return count;
 531 }
 532 LUSTRE_RW_ATTR(commit_on_sharing);
 533
 534 static int mdt_root_squash_seq_show(struct seq_file *m, void *data)
 535 {
 536         struct obd_device *obd = m->private;
 537         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 538         struct root_squash_info *squash = &mdt->mdt_squash;
 539
 540         seq_printf(m, "%u:%u\n", squash->rsi_uid,
 541                    squash->rsi_gid);
 542         return 0;
 543 }
 544
 545 static ssize_t
 546 mdt_root_squash_seq_write(struct file *file, const char __user *buffer,
 547                           size_t count, loff_t *off)
 548 {
 549         struct seq_file   *m = file->private_data;
 550         struct obd_device *obd = m->private;
 551         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 552         struct root_squash_info *squash = &mdt->mdt_squash;
 553
 554         return lprocfs_wr_root_squash(buffer, count, squash,
 555                                       mdt_obd_name(mdt));
 556 }
 557 LPROC_SEQ_FOPS(mdt_root_squash);
 558
 559 static int mdt_nosquash_nids_seq_show(struct seq_file *m, void *data)
 560 {
 561         struct obd_device *obd = m->private;
 562         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 563         struct root_squash_info *squash = &mdt->mdt_squash;
 564         int len = 0;
 565
 566         spin_lock(&squash->rsi_lock);
 567         if (!list_empty(&squash->rsi_nosquash_nids)) {
 568                 len = cfs_print_nidlist(m->buf + m->count, m->size - m->count,
 569                                         &squash->rsi_nosquash_nids);
 570                 m->count += len;
 571                 seq_putc(m, '\n');
 572         } else
 573                 seq_puts(m, "NONE\n");
 574         spin_unlock(&squash->rsi_lock);
 575
 576         return 0;
 577 }
 578
 579 static ssize_t
 580 mdt_nosquash_nids_seq_write(struct file *file, const char __user *buffer,
 581                             size_t count, loff_t *off)
 582 {
 583         struct seq_file   *m = file->private_data;
 584         struct obd_device *obd = m->private;
 585         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 586         struct root_squash_info *squash = &mdt->mdt_squash;
 587
 588         return lprocfs_wr_nosquash_nids(buffer, count, squash,
 589                                         mdt_obd_name(mdt));
 590 }
 591 LPROC_SEQ_FOPS(mdt_nosquash_nids);
 592
 593 static ssize_t enable_remote_dir_show(struct kobject *kobj,
 594                                       struct attribute *attr, char *buf)
 595 {
 596         struct obd_device *obd = container_of(kobj, struct obd_device,
 597                                               obd_kset.kobj);
 598         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 599
 600         return scnprintf(buf, PAGE_SIZE, "%u\n", mdt->mdt_enable_remote_dir);
 601 }
 602
 603 static ssize_t enable_remote_dir_store(struct kobject *kobj,
 604                                        struct attribute *attr,
 605                                        const char *buffer, size_t count)
 606 {
 607         struct obd_device *obd = container_of(kobj, struct obd_device,
 608                                               obd_kset.kobj);
 609         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 610         bool val;
 611         int rc;
 612
 613         rc = kstrtobool(buffer, &val);
 614         if (rc)
 615                 return rc;
 616
 617         mdt->mdt_enable_remote_dir = val;
 618         return count;
 619 }
 620 LUSTRE_RW_ATTR(enable_remote_dir);
 621
 622 static ssize_t enable_remote_dir_gid_show(struct kobject *kobj,
 623                                           struct attribute *attr, char *buf)
 624 {
 625         struct obd_device *obd = container_of(kobj, struct obd_device,
 626                                               obd_kset.kobj);
 627         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 628
 629         return scnprintf(buf, PAGE_SIZE, "%d\n",
 630                          (int)mdt->mdt_enable_remote_dir_gid);
 631 }
 632
 633 static ssize_t enable_remote_dir_gid_store(struct kobject *kobj,
 634                                            struct attribute *attr,
 635                                            const char *buffer, size_t count)
 636 {
 637         struct obd_device *obd = container_of(kobj, struct obd_device,
 638                                               obd_kset.kobj);
 639         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 640         int val;
 641         int rc;
 642
 643         rc = kstrtoint(buffer, 0, &val);
 644         if (rc)
 645                 return rc;
 646
 647         mdt->mdt_enable_remote_dir_gid = val;
 648         return count;
 649 }
 650 LUSTRE_RW_ATTR(enable_remote_dir_gid);
 651
 652 static ssize_t enable_striped_dir_show(struct kobject *kobj,
 653                                        struct attribute *attr, char *buf)
 654 {
 655         struct obd_device *obd = container_of(kobj, struct obd_device,
 656                                               obd_kset.kobj);
 657         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 658
 659         return scnprintf(buf, PAGE_SIZE, "%u\n", mdt->mdt_enable_striped_dir);
 660 }
 661
 662 static ssize_t enable_striped_dir_store(struct kobject *kobj,
 663                                         struct attribute *attr,
 664                                         const char *buffer, size_t count)
 665 {
 666         struct obd_device *obd = container_of(kobj, struct obd_device,
 667                                               obd_kset.kobj);
 668         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 669         bool val;
 670         int rc;
 671
 672         rc = kstrtobool(buffer, &val);
 673         if (rc)
 674                 return rc;
 675
 676         mdt->mdt_enable_striped_dir = val;
 677         return count;
 678 }
 679 LUSTRE_RW_ATTR(enable_striped_dir);
 680
 681 static ssize_t enable_dir_migration_show(struct kobject *kobj,
 682                                          struct attribute *attr, char *buf)
 683 {
 684         struct obd_device *obd = container_of(kobj, struct obd_device,
 685                                               obd_kset.kobj);
 686         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 687
 688         return scnprintf(buf, PAGE_SIZE, "%u\n", mdt->mdt_enable_dir_migration);
 689 }
 690
 691 static ssize_t enable_dir_migration_store(struct kobject *kobj,
 692                                           struct attribute *attr,
 693                                           const char *buffer, size_t count)
 694 {
 695         struct obd_device *obd = container_of(kobj, struct obd_device,
 696                                               obd_kset.kobj);
 697         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 698         bool val;
 699         int rc;
 700
 701         rc = kstrtobool(buffer, &val);
 702         if (rc)
 703                 return rc;
 704
 705         mdt->mdt_enable_dir_migration = val;
 706         return count;
 707 }
 708 LUSTRE_RW_ATTR(enable_dir_migration);
 709
 710 /**
 711  * Show MDT async commit count.
 712  *
 713  * @m           seq_file handle
 714  * @data        unused for single entry
 715  *
 716  * Return:      0 on success
 717  *              negative value on error
 718  */
 719 static ssize_t async_commit_count_show(struct kobject *kobj,
 720                                        struct attribute *attr, char *buf)
 721 {
 722         struct obd_device *obd = container_of(kobj, struct obd_device,
 723                                               obd_kset.kobj);
 724         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 725
 726         return scnprintf(buf, PAGE_SIZE, "%d\n",
 727                          atomic_read(&mdt->mdt_async_commit_count));
 728 }
 729
 730 static ssize_t async_commit_count_store(struct kobject *kobj,
 731                                         struct attribute *attr,
 732                                         const char *buffer, size_t count)
 733 {
 734         struct obd_device *obd = container_of(kobj, struct obd_device,
 735                                               obd_kset.kobj);
 736         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 737         int val;
 738         int rc;
 739
 740         rc = kstrtoint(buffer, 10, &val);
 741         if (rc)
 742                 return rc;
 743
 744         atomic_set(&mdt->mdt_async_commit_count, val);
 745
 746         return count;
 747 }
 748 LUSTRE_RW_ATTR(async_commit_count);
 749
 750 /**
 751  * Show MDT sync count.
 752  *
 753  * \param[in] m         seq_file handle
 754  * \param[in] data      unused for single entry
 755  *
 756  * \retval              0 on success
 757  * \retval              negative value on error
 758  */
 759 static ssize_t sync_count_show(struct kobject *kobj, struct attribute *attr,
 760                                char *buf)
 761 {
 762         struct obd_device *obd = container_of(kobj, struct obd_device,
 763                                               obd_kset.kobj);
 764         struct lu_target *tgt = obd->u.obt.obt_lut;
 765
 766         return scnprintf(buf, PAGE_SIZE, "%d\n",
 767                          atomic_read(&tgt->lut_sync_count));
 768 }
 769
 770 static ssize_t sync_count_store(struct kobject *kobj, struct attribute *attr,
 771                                 const char *buffer, size_t count)
 772 {
 773         struct obd_device *obd = container_of(kobj, struct obd_device,
 774                                               obd_kset.kobj);
 775         struct lu_target *tgt = obd->u.obt.obt_lut;
 776         int val;
 777         int rc;
 778
 779         rc = kstrtoint(buffer, 0, &val);
 780         if (rc)
 781                 return rc;
 782
 783         atomic_set(&tgt->lut_sync_count, val);
 784
 785         return count;
 786 }
 787 LUSTRE_RW_ATTR(sync_count);
 788
 789 static char *dom_open_lock_modes[NUM_DOM_LOCK_ON_OPEN_MODES] = {
 790         [NO_DOM_LOCK_ON_OPEN] = "never",
 791         [TRYLOCK_DOM_ON_OPEN] = "trylock",
 792         [ALWAYS_DOM_LOCK_ON_OPEN] = "always",
 793 };
 794
 795 /* This must be longer than the longest string above */
 796 #define DOM_LOCK_MODES_MAXLEN 16
 797
 798 /**
 799  * Show MDT policy for data prefetch on open for DoM files..
 800  *
 801  * \param[in] m         seq_file handle
 802  * \param[in] data      unused
 803  *
 804  * \retval              0 on success
 805  * \retval              negative value on error
 806  */
 807 static ssize_t dom_lock_show(struct kobject *kobj, struct attribute *attr,
 808                              char *buf)
 809 {
 810         struct obd_device *obd = container_of(kobj, struct obd_device,
 811                                               obd_kset.kobj);
 812         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 813
 814         return scnprintf(buf, PAGE_SIZE, "%s\n",
 815                          dom_open_lock_modes[mdt->mdt_opts.mo_dom_lock]);
 816 }
 817
 818 /**
 819  * Change MDT policy for data prefetch on open for DoM files.
 820  *
 821  * This variable defines how DOM lock is taken at open enqueue.
 822  * There are three possible modes:
 823  * 1) never - never take DoM lock on open. DoM lock will be taken as separate
 824  *    IO lock with own enqueue.
 825  * 2) trylock - DoM lock will be taken only if non-blocked.
 826  * 3) always - DoM lock will be taken always even if it is blocking lock.
 827  *
 828  * If dom_read_open is enabled too then DoM lock is taken in PR mode and
 829  * is paired with LAYOUT lock when possible.
 830  *
 831  * \param[in] file      proc file
 832  * \param[in] buffer    string which represents policy
 833  * \param[in] count     \a buffer length
 834  * \param[in] off       unused for single entry
 835  *
 836  * \retval              \a count on success
 837  * \retval              negative number on error
 838  */
 839 static ssize_t dom_lock_store(struct kobject *kobj, struct attribute *attr,
 840                               const char *buffer, size_t count)
 841 {
 842         struct obd_device *obd = container_of(kobj, struct obd_device,
 843                                               obd_kset.kobj);
 844         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 845         int val = -1;
 846         int i, rc;
 847
 848         if (count == 0 || count >= DOM_LOCK_MODES_MAXLEN)
 849                 return -EINVAL;
 850
 851         for (i = 0 ; i < NUM_DOM_LOCK_ON_OPEN_MODES; i++) {
 852                 /* buffer might have '\n' but using strlen() avoids it */
 853                 if (strncmp(buffer, dom_open_lock_modes[i],
 854                             strlen(dom_open_lock_modes[i])) == 0) {
 855                         val = i;
 856                         break;
 857                 }
 858         }
 859
 860         /* Legacy numeric codes */
 861         if (val == -1) {
 862                 rc = kstrtoint(buffer, 0, &val);
 863                 if (rc)
 864                         return rc;
 865         }
 866
 867         if (val < 0 || val >= NUM_DOM_LOCK_ON_OPEN_MODES)
 868                 return -EINVAL;
 869
 870         mdt->mdt_opts.mo_dom_lock = val;
 871         return count;
 872 }
 873 LUSTRE_RW_ATTR(dom_lock);
 874
 875 /**
 876  * Show MDT policy for data prefetch on open for DoM files..
 877  *
 878  * \param[in] m         seq_file handle
 879  * \param[in] data      unused
 880  *
 881  * \retval              0 on success
 882  * \retval              negative value on error
 883  */
 884 static ssize_t dom_read_open_show(struct kobject *kobj,
 885                                   struct attribute *attr, char *buf)
 886 {
 887         struct obd_device *obd = container_of(kobj, struct obd_device,
 888                                               obd_kset.kobj);
 889         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 890
 891         return scnprintf(buf, PAGE_SIZE, "%u\n",
 892                          !!mdt->mdt_opts.mo_dom_read_open);
 893 }
 894
 895 /**
 896  * Modify MDT policy for data prefetch on open for DoM files.
 897  *
 898  * If enabled then Data-on-MDT file data may be read during open and
 899  * returned back in reply. It works only with mo_dom_lock enabled.
 900  *
 901  * \param[in] file      proc file
 902  * \param[in] buffer    string which represents policy
 903  * \param[in] count     \a buffer length
 904  * \param[in] off       unused for single entry
 905  *
 906  * \retval              \a count on success
 907  * \retval              negative number on error
 908  */
 909 static ssize_t dom_read_open_store(struct kobject *kobj,
 910                                    struct attribute *attr, const char *buffer,
 911                                    size_t count)
 912 {
 913         struct obd_device *obd = container_of(kobj, struct obd_device,
 914                                               obd_kset.kobj);
 915         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 916         bool val;
 917         int rc;
 918
 919         rc = kstrtobool(buffer, &val);
 920         if (rc)
 921                 return rc;
 922
 923         mdt->mdt_opts.mo_dom_read_open = !!val;
 924         return count;
 925 }
 926 LUSTRE_RW_ATTR(dom_read_open);
 927
 928 static ssize_t migrate_hsm_allowed_show(struct kobject *kobj,
 929                                         struct attribute *attr, char *buf)
 930 {
 931         struct obd_device *obd = container_of(kobj, struct obd_device,
 932                                               obd_kset.kobj);
 933         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 934
 935         return scnprintf(buf, PAGE_SIZE, "%u\n",
 936                          mdt->mdt_opts.mo_migrate_hsm_allowed);
 937 }
 938
 939 static ssize_t migrate_hsm_allowed_store(struct kobject *kobj,
 940                                          struct attribute *attr,
 941                                          const char *buffer, size_t count)
 942 {
 943         struct obd_device *obd = container_of(kobj, struct obd_device,
 944                                               obd_kset.kobj);
 945         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 946         bool val;
 947         int rc;
 948
 949         rc = kstrtobool(buffer, &val);
 950         if (rc)
 951                 return rc;
 952
 953         mdt->mdt_opts.mo_migrate_hsm_allowed = val;
 954         return count;
 955 }
 956 LUSTRE_RW_ATTR(migrate_hsm_allowed);
 957
 958 static ssize_t readonly_show(struct kobject *kobj, struct attribute *attr,
 959                              char *buf)
 960 {
 961         struct obd_device *obd = container_of(kobj, struct obd_device,
 962                                               obd_kset.kobj);
 963         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 964
 965         return scnprintf(buf, PAGE_SIZE, "%u\n", mdt->mdt_readonly);
 966 }
 967
 968 static ssize_t readonly_store(struct kobject *kobj, struct attribute *attr,
 969                               const char *buffer, size_t count)
 970 {
 971         struct obd_device *obd = container_of(kobj, struct obd_device,
 972                                               obd_kset.kobj);
 973         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 974         bool val;
 975         int rc;
 976
 977         rc = kstrtobool(buffer, &val);
 978         if (rc)
 979                 return rc;
 980
 981         mdt->mdt_readonly = val;
 982         return count;
 983 }
 984 LUSTRE_RW_ATTR(readonly);
 985
 986 static ssize_t enable_remote_rename_show(struct kobject *kobj,
 987                                          struct attribute *attr,
 988                                          char *buf)
 989 {
 990         struct obd_device *obd = container_of(kobj, struct obd_device,
 991                                               obd_kset.kobj);
 992         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 993
 994         return scnprintf(buf, PAGE_SIZE, "%u\n",
 995                          mdt->mdt_enable_remote_rename);
 996 }
 997
 998 static ssize_t enable_remote_rename_store(struct kobject *kobj,
 999                                           struct attribute *attr,
1000                                           const char *buffer, size_t count)
1001 {
1002         struct obd_device *obd = container_of(kobj, struct obd_device,
1003                                               obd_kset.kobj);
1004         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1005         bool val;
1006         int rc;
1007
1008         rc = kstrtobool(buffer, &val);
1009         if (rc)
1010                 return rc;
1011
1012         mdt->mdt_enable_remote_rename = val;
1013         return count;
1014 }
1015 LUSTRE_RW_ATTR(enable_remote_rename);
1016
1017 LPROC_SEQ_FOPS_RO_TYPE(mdt, hash);
1018 LPROC_SEQ_FOPS_WR_ONLY(mdt, mds_evict_client);
1019 LUSTRE_RW_ATTR(job_cleanup_interval);
1020 LPROC_SEQ_FOPS_RW_TYPE(mdt, nid_stats_clear);
1021 LUSTRE_RW_ATTR(hsm_control);
1022
1023 LPROC_SEQ_FOPS_RO_TYPE(mdt, recovery_status);
1024 LUSTRE_RW_ATTR(recovery_time_hard);
1025 LUSTRE_RW_ATTR(recovery_time_soft);
1026 LUSTRE_RW_ATTR(ir_factor);
1027
1028 LUSTRE_RO_ATTR(tot_dirty);
1029 LUSTRE_RO_ATTR(tot_granted);
1030 LUSTRE_RO_ATTR(tot_pending);
1031 LUSTRE_RW_ATTR(grant_compat_disable);
1032 LUSTRE_RO_ATTR(instance);
1033
1034 LUSTRE_RO_ATTR(num_exports);
1035
1036 static struct attribute *mdt_attrs[] = {
1037         &lustre_attr_tot_dirty.attr,
1038         &lustre_attr_tot_granted.attr,
1039         &lustre_attr_tot_pending.attr,
1040         &lustre_attr_grant_compat_disable.attr,
1041         &lustre_attr_instance.attr,
1042         &lustre_attr_recovery_time_hard.attr,
1043         &lustre_attr_recovery_time_soft.attr,
1044         &lustre_attr_ir_factor.attr,
1045         &lustre_attr_num_exports.attr,
1046         &lustre_attr_identity_expire.attr,
1047         &lustre_attr_identity_acquire_expire.attr,
1048         &lustre_attr_identity_upcall.attr,
1049         &lustre_attr_identity_flush.attr,
1050         &lustre_attr_evict_tgt_nids.attr,
1051         &lustre_attr_enable_remote_dir.attr,
1052         &lustre_attr_enable_remote_dir_gid.attr,
1053         &lustre_attr_enable_striped_dir.attr,
1054         &lustre_attr_enable_dir_migration.attr,
1055         &lustre_attr_enable_remote_rename.attr,
1056         &lustre_attr_commit_on_sharing.attr,
1057         &lustre_attr_async_commit_count.attr,
1058         &lustre_attr_sync_count.attr,
1059         &lustre_attr_dom_lock.attr,
1060         &lustre_attr_dom_read_open.attr,
1061         &lustre_attr_migrate_hsm_allowed.attr,
1062         &lustre_attr_hsm_control.attr,
1063         &lustre_attr_job_cleanup_interval.attr,
1064         &lustre_attr_readonly.attr,
1065         NULL,
1066 };
1067
1068 static struct lprocfs_vars lprocfs_mdt_obd_vars[] = {
1069         { .name =       "recovery_status",
1070           .fops =       &mdt_recovery_status_fops               },
1071         { .name =       "identity_info",
1072           .fops =       &mdt_identity_info_fops                 },
1073         { .name =       "site_stats",
1074           .fops =       &mdt_site_stats_fops                    },
1075         { .name =       "evict_client",
1076           .fops =       &mdt_mds_evict_client_fops              },
1077         { .name =       "hash_stats",
1078           .fops =       &mdt_hash_fops                          },
1079         { .name =       "root_squash",
1080           .fops =       &mdt_root_squash_fops                   },
1081         { .name =       "nosquash_nids",
1082           .fops =       &mdt_nosquash_nids_fops                 },
1083         { NULL }
1084 };
1085
1086 static int
1087 lprocfs_mdt_print_open_files(struct cfs_hash *hs, struct cfs_hash_bd *bd,
1088                              struct hlist_node *hnode, void *v)
1089 {
1090         struct obd_export       *exp = cfs_hash_object(hs, hnode);
1091         struct seq_file         *seq = v;
1092
1093         if (exp->exp_lock_hash != NULL) {
1094                 struct mdt_export_data  *med = &exp->exp_mdt_data;
1095                 struct mdt_file_data    *mfd;
1096
1097                 spin_lock(&med->med_open_lock);
1098                 list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
1099                         seq_printf(seq, DFID"\n",
1100                                    PFID(mdt_object_fid(mfd->mfd_object)));
1101                 }
1102                 spin_unlock(&med->med_open_lock);
1103         }
1104
1105         return 0;
1106 }
1107
1108 static int lprocfs_mdt_open_files_seq_show(struct seq_file *seq, void *v)
1109 {
1110         struct nid_stat *stats = seq->private;
1111         struct obd_device *obd = stats->nid_obd;
1112
1113         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
1114                               lprocfs_mdt_print_open_files, seq);
1115
1116         return 0;
1117 }
1118
1119 int lprocfs_mdt_open_files_seq_open(struct inode *inode, struct file *file)
1120 {
1121         struct seq_file         *seq;
1122         int                     rc;
1123
1124         rc = single_open(file, &lprocfs_mdt_open_files_seq_show, NULL);
1125         if (rc != 0)
1126                 return rc;
1127
1128         seq = file->private_data;
1129         seq->private = PDE_DATA(inode);
1130
1131         return 0;
1132 }
1133
1134 void mdt_counter_incr(struct ptlrpc_request *req, int opcode)
1135 {
1136         struct obd_export *exp = req->rq_export;
1137
1138         if (exp->exp_obd && exp->exp_obd->obd_md_stats)
1139                 lprocfs_counter_incr(exp->exp_obd->obd_md_stats,
1140                                      opcode + LPROC_MD_LAST_OPC);
1141         if (exp->exp_nid_stats && exp->exp_nid_stats->nid_stats != NULL)
1142                 lprocfs_counter_incr(exp->exp_nid_stats->nid_stats, opcode);
1143         if (exp->exp_obd && exp->exp_obd->u.obt.obt_jobstats.ojs_hash &&
1144             (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS))
1145                 lprocfs_job_stats_log(exp->exp_obd,
1146                                       lustre_msg_get_jobid(req->rq_reqmsg),
1147                                       opcode, 1);
1148 }
1149
1150 static const char * const mdt_stats[] = {
1151         [LPROC_MDT_OPEN]                = "open",
1152         [LPROC_MDT_CLOSE]               = "close",
1153         [LPROC_MDT_MKNOD]               = "mknod",
1154         [LPROC_MDT_LINK]                = "link",
1155         [LPROC_MDT_UNLINK]              = "unlink",
1156         [LPROC_MDT_MKDIR]               = "mkdir",
1157         [LPROC_MDT_RMDIR]               = "rmdir",
1158         [LPROC_MDT_RENAME]              = "rename",
1159         [LPROC_MDT_GETATTR]             = "getattr",
1160         [LPROC_MDT_SETATTR]             = "setattr",
1161         [LPROC_MDT_GETXATTR]            = "getxattr",
1162         [LPROC_MDT_SETXATTR]            = "setxattr",
1163         [LPROC_MDT_STATFS]              = "statfs",
1164         [LPROC_MDT_SYNC]                = "sync",
1165         [LPROC_MDT_SAMEDIR_RENAME]      = "samedir_rename",
1166         [LPROC_MDT_CROSSDIR_RENAME]     = "crossdir_rename",
1167         [LPROC_MDT_IO_READ]             = "read_bytes",
1168         [LPROC_MDT_IO_WRITE]            = "write_bytes",
1169         [LPROC_MDT_IO_PUNCH]            = "punch",
1170 };
1171
1172 void mdt_stats_counter_init(struct lprocfs_stats *stats)
1173 {
1174         int idx;
1175
1176         LASSERT(stats && stats->ls_num >= ARRAY_SIZE(mdt_stats));
1177
1178         for (idx = 0; idx < ARRAY_SIZE(mdt_stats); idx++) {
1179                 int flags = 0;
1180
1181                 if (idx == LPROC_MDT_IO_WRITE || idx == LPROC_MDT_IO_READ)
1182                         flags = LPROCFS_CNTR_AVGMINMAX;
1183
1184                 lprocfs_counter_init(stats, idx, flags, mdt_stats[idx], "reqs");
1185         }
1186 }
1187
1188 int mdt_tunables_init(struct mdt_device *mdt, const char *name)
1189 {
1190         struct obd_device *obd = mdt2obd_dev(mdt);
1191         int rc;
1192         int i;
1193
1194         ENTRY;
1195         LASSERT(name != NULL);
1196
1197         obd->obd_ktype.default_attrs = mdt_attrs;
1198         obd->obd_vars = lprocfs_mdt_obd_vars;
1199         rc = lprocfs_obd_setup(obd, true);
1200         if (rc) {
1201                 CERROR("%s: cannot create proc entries: rc = %d\n",
1202                        mdt_obd_name(mdt), rc);
1203                 return rc;
1204         }
1205
1206         rc = tgt_tunables_init(&mdt->mdt_lut);
1207         if (rc) {
1208                 CERROR("%s: failed to init target tunables: rc = %d\n",
1209                        mdt_obd_name(mdt), rc);
1210                 return rc;
1211         }
1212
1213         rc = hsm_cdt_tunables_init(mdt);
1214         if (rc) {
1215                 CERROR("%s: cannot create hsm proc entries: rc = %d\n",
1216                        mdt_obd_name(mdt), rc);
1217                 return rc;
1218         }
1219
1220         obd->obd_proc_exports_entry = proc_mkdir("exports",
1221                                                  obd->obd_proc_entry);
1222         if (obd->obd_proc_exports_entry)
1223                 lprocfs_add_simple(obd->obd_proc_exports_entry, "clear",
1224                                    obd, &mdt_nid_stats_clear_fops);
1225
1226         rc = lprocfs_alloc_md_stats(obd, ARRAY_SIZE(mdt_stats));
1227         if (rc)
1228                 return rc;
1229
1230         /* add additional MDT md_stats after the default ones */
1231         for (i = 0; i < ARRAY_SIZE(mdt_stats); i++) {
1232                 int idx = i + LPROC_MD_LAST_OPC;
1233                 int flags = 0;
1234
1235                 if (idx == LPROC_MDT_IO_WRITE || idx == LPROC_MDT_IO_READ)
1236                         flags = LPROCFS_CNTR_AVGMINMAX;
1237
1238                 lprocfs_counter_init(obd->obd_md_stats, idx, flags,
1239                                      mdt_stats[i], "reqs");
1240         }
1241
1242         rc = lprocfs_job_stats_init(obd, ARRAY_SIZE(mdt_stats),
1243                                     mdt_stats_counter_init);
1244
1245         rc = lproc_mdt_attach_rename_seqstat(mdt);
1246         if (rc)
1247                 CERROR("%s: MDT can not create rename stats rc = %d\n",
1248                        mdt_obd_name(mdt), rc);
1249
1250         RETURN(rc);
1251 }
1252
1253 void mdt_tunables_fini(struct mdt_device *mdt)
1254 {
1255         struct obd_device *obd = mdt2obd_dev(mdt);
1256
1257         if (obd->obd_proc_exports_entry != NULL) {
1258                 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
1259                 obd->obd_proc_exports_entry = NULL;
1260         }
1261
1262         lprocfs_free_per_client_stats(obd);
1263         /* hsm_cdt_tunables is disabled earlier than this to avoid
1264          * coordinator restart.
1265          */
1266         hsm_cdt_tunables_fini(mdt);
1267         tgt_tunables_fini(&mdt->mdt_lut);
1268         lprocfs_obd_cleanup(obd);
1269         lprocfs_free_md_stats(obd);
1270         lprocfs_free_obd_stats(obd);
1271         lprocfs_job_stats_fini(obd);
1272 }