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         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 ssize_t local_recovery_show(struct kobject *kobj,
 535                                       struct attribute *attr, char *buf)
 536 {
 537         struct obd_device *obd = container_of(kobj, struct obd_device,
 538                                               obd_kset.kobj);
 539
 540         return scnprintf(buf, PAGE_SIZE, "%u\n",
 541                          obd->u.obt.obt_lut->lut_local_recovery);
 542 }
 543
 544 static ssize_t local_recovery_store(struct kobject *kobj,
 545                                        struct attribute *attr,
 546                                        const char *buffer, size_t count)
 547 {
 548         struct obd_device *obd = container_of(kobj, struct obd_device,
 549                                               obd_kset.kobj);
 550         bool val;
 551         int rc;
 552
 553         rc = kstrtobool(buffer, &val);
 554         if (rc)
 555                 return rc;
 556
 557         obd->u.obt.obt_lut->lut_local_recovery = !!val;
 558         return count;
 559 }
 560 LUSTRE_RW_ATTR(local_recovery);
 561
 562 static int mdt_root_squash_seq_show(struct seq_file *m, void *data)
 563 {
 564         struct obd_device *obd = m->private;
 565         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 566         struct root_squash_info *squash = &mdt->mdt_squash;
 567
 568         seq_printf(m, "%u:%u\n", squash->rsi_uid,
 569                    squash->rsi_gid);
 570         return 0;
 571 }
 572
 573 static ssize_t
 574 mdt_root_squash_seq_write(struct file *file, const char __user *buffer,
 575                           size_t count, loff_t *off)
 576 {
 577         struct seq_file   *m = file->private_data;
 578         struct obd_device *obd = m->private;
 579         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 580         struct root_squash_info *squash = &mdt->mdt_squash;
 581
 582         return lprocfs_wr_root_squash(buffer, count, squash,
 583                                       mdt_obd_name(mdt));
 584 }
 585 LPROC_SEQ_FOPS(mdt_root_squash);
 586
 587 static int mdt_nosquash_nids_seq_show(struct seq_file *m, void *data)
 588 {
 589         struct obd_device *obd = m->private;
 590         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 591         struct root_squash_info *squash = &mdt->mdt_squash;
 592         int len = 0;
 593
 594         spin_lock(&squash->rsi_lock);
 595         if (!list_empty(&squash->rsi_nosquash_nids)) {
 596                 len = cfs_print_nidlist(m->buf + m->count, m->size - m->count,
 597                                         &squash->rsi_nosquash_nids);
 598                 m->count += len;
 599                 seq_putc(m, '\n');
 600         } else
 601                 seq_puts(m, "NONE\n");
 602         spin_unlock(&squash->rsi_lock);
 603
 604         return 0;
 605 }
 606
 607 static ssize_t
 608 mdt_nosquash_nids_seq_write(struct file *file, const char __user *buffer,
 609                             size_t count, loff_t *off)
 610 {
 611         struct seq_file   *m = file->private_data;
 612         struct obd_device *obd = m->private;
 613         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 614         struct root_squash_info *squash = &mdt->mdt_squash;
 615
 616         return lprocfs_wr_nosquash_nids(buffer, count, squash,
 617                                         mdt_obd_name(mdt));
 618 }
 619 LPROC_SEQ_FOPS(mdt_nosquash_nids);
 620
 621 static ssize_t enable_remote_dir_show(struct kobject *kobj,
 622                                       struct attribute *attr, char *buf)
 623 {
 624         struct obd_device *obd = container_of(kobj, struct obd_device,
 625                                               obd_kset.kobj);
 626         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 627
 628         return scnprintf(buf, PAGE_SIZE, "%u\n", mdt->mdt_enable_remote_dir);
 629 }
 630
 631 static ssize_t enable_remote_dir_store(struct kobject *kobj,
 632                                        struct attribute *attr,
 633                                        const char *buffer, size_t count)
 634 {
 635         struct obd_device *obd = container_of(kobj, struct obd_device,
 636                                               obd_kset.kobj);
 637         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 638         bool val;
 639         int rc;
 640
 641         rc = kstrtobool(buffer, &val);
 642         if (rc)
 643                 return rc;
 644
 645         mdt->mdt_enable_remote_dir = val;
 646         return count;
 647 }
 648 LUSTRE_RW_ATTR(enable_remote_dir);
 649
 650 static ssize_t enable_remote_dir_gid_show(struct kobject *kobj,
 651                                           struct attribute *attr, char *buf)
 652 {
 653         struct obd_device *obd = container_of(kobj, struct obd_device,
 654                                               obd_kset.kobj);
 655         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 656
 657         return scnprintf(buf, PAGE_SIZE, "%d\n",
 658                          (int)mdt->mdt_enable_remote_dir_gid);
 659 }
 660
 661 static ssize_t enable_remote_dir_gid_store(struct kobject *kobj,
 662                                            struct attribute *attr,
 663                                            const char *buffer, size_t count)
 664 {
 665         struct obd_device *obd = container_of(kobj, struct obd_device,
 666                                               obd_kset.kobj);
 667         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 668         int val;
 669         int rc;
 670
 671         rc = kstrtoint(buffer, 0, &val);
 672         if (rc)
 673                 return rc;
 674
 675         mdt->mdt_enable_remote_dir_gid = val;
 676         return count;
 677 }
 678 LUSTRE_RW_ATTR(enable_remote_dir_gid);
 679
 680 static ssize_t enable_chprojid_gid_show(struct kobject *kobj,
 681                                         struct attribute *attr, char *buf)
 682 {
 683         struct obd_device *obd = container_of(kobj, struct obd_device,
 684                                               obd_kset.kobj);
 685         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 686
 687         return scnprintf(buf, PAGE_SIZE, "%d\n",
 688                          (int)mdt->mdt_enable_chprojid_gid);
 689 }
 690
 691 static ssize_t enable_chprojid_gid_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         int val;
 699         int rc;
 700
 701         rc = kstrtoint(buffer, 0, &val);
 702         if (rc)
 703                 return rc;
 704
 705         mdt->mdt_enable_chprojid_gid = val;
 706         return count;
 707 }
 708 LUSTRE_RW_ATTR(enable_chprojid_gid);
 709
 710 static ssize_t enable_striped_dir_show(struct kobject *kobj,
 711                                        struct attribute *attr, char *buf)
 712 {
 713         struct obd_device *obd = container_of(kobj, struct obd_device,
 714                                               obd_kset.kobj);
 715         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 716
 717         return scnprintf(buf, PAGE_SIZE, "%u\n", mdt->mdt_enable_striped_dir);
 718 }
 719
 720 static ssize_t enable_striped_dir_store(struct kobject *kobj,
 721                                         struct attribute *attr,
 722                                         const char *buffer, size_t count)
 723 {
 724         struct obd_device *obd = container_of(kobj, struct obd_device,
 725                                               obd_kset.kobj);
 726         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 727         bool val;
 728         int rc;
 729
 730         rc = kstrtobool(buffer, &val);
 731         if (rc)
 732                 return rc;
 733
 734         mdt->mdt_enable_striped_dir = val;
 735         return count;
 736 }
 737 LUSTRE_RW_ATTR(enable_striped_dir);
 738
 739 static ssize_t enable_dir_migration_show(struct kobject *kobj,
 740                                          struct attribute *attr, char *buf)
 741 {
 742         struct obd_device *obd = container_of(kobj, struct obd_device,
 743                                               obd_kset.kobj);
 744         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 745
 746         return scnprintf(buf, PAGE_SIZE, "%u\n", mdt->mdt_enable_dir_migration);
 747 }
 748
 749 static ssize_t enable_dir_migration_store(struct kobject *kobj,
 750                                           struct attribute *attr,
 751                                           const char *buffer, size_t count)
 752 {
 753         struct obd_device *obd = container_of(kobj, struct obd_device,
 754                                               obd_kset.kobj);
 755         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 756         bool val;
 757         int rc;
 758
 759         rc = kstrtobool(buffer, &val);
 760         if (rc)
 761                 return rc;
 762
 763         mdt->mdt_enable_dir_migration = val;
 764         return count;
 765 }
 766 LUSTRE_RW_ATTR(enable_dir_migration);
 767
 768 /**
 769  * Show MDT async commit count.
 770  *
 771  * @m           seq_file handle
 772  * @data        unused for single entry
 773  *
 774  * Return:      0 on success
 775  *              negative value on error
 776  */
 777 static ssize_t async_commit_count_show(struct kobject *kobj,
 778                                        struct attribute *attr, char *buf)
 779 {
 780         struct obd_device *obd = container_of(kobj, struct obd_device,
 781                                               obd_kset.kobj);
 782         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 783
 784         return scnprintf(buf, PAGE_SIZE, "%d\n",
 785                          atomic_read(&mdt->mdt_async_commit_count));
 786 }
 787
 788 static ssize_t async_commit_count_store(struct kobject *kobj,
 789                                         struct attribute *attr,
 790                                         const char *buffer, size_t count)
 791 {
 792         struct obd_device *obd = container_of(kobj, struct obd_device,
 793                                               obd_kset.kobj);
 794         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 795         int val;
 796         int rc;
 797
 798         rc = kstrtoint(buffer, 10, &val);
 799         if (rc)
 800                 return rc;
 801
 802         atomic_set(&mdt->mdt_async_commit_count, val);
 803
 804         return count;
 805 }
 806 LUSTRE_RW_ATTR(async_commit_count);
 807
 808 /**
 809  * Show MDT sync count.
 810  *
 811  * \param[in] m         seq_file handle
 812  * \param[in] data      unused for single entry
 813  *
 814  * \retval              0 on success
 815  * \retval              negative value on error
 816  */
 817 static ssize_t sync_count_show(struct kobject *kobj, struct attribute *attr,
 818                                char *buf)
 819 {
 820         struct obd_device *obd = container_of(kobj, struct obd_device,
 821                                               obd_kset.kobj);
 822         struct lu_target *tgt = obd->u.obt.obt_lut;
 823
 824         return scnprintf(buf, PAGE_SIZE, "%d\n",
 825                          atomic_read(&tgt->lut_sync_count));
 826 }
 827
 828 static ssize_t sync_count_store(struct kobject *kobj, struct attribute *attr,
 829                                 const char *buffer, size_t count)
 830 {
 831         struct obd_device *obd = container_of(kobj, struct obd_device,
 832                                               obd_kset.kobj);
 833         struct lu_target *tgt = obd->u.obt.obt_lut;
 834         int val;
 835         int rc;
 836
 837         rc = kstrtoint(buffer, 0, &val);
 838         if (rc)
 839                 return rc;
 840
 841         atomic_set(&tgt->lut_sync_count, val);
 842
 843         return count;
 844 }
 845 LUSTRE_RW_ATTR(sync_count);
 846
 847 static char *dom_open_lock_modes[NUM_DOM_LOCK_ON_OPEN_MODES] = {
 848         [NO_DOM_LOCK_ON_OPEN] = "never",
 849         [TRYLOCK_DOM_ON_OPEN] = "trylock",
 850         [ALWAYS_DOM_LOCK_ON_OPEN] = "always",
 851 };
 852
 853 /* This must be longer than the longest string above */
 854 #define DOM_LOCK_MODES_MAXLEN 16
 855
 856 /**
 857  * Show MDT policy for data prefetch on open for DoM files..
 858  *
 859  * \param[in] m         seq_file handle
 860  * \param[in] data      unused
 861  *
 862  * \retval              0 on success
 863  * \retval              negative value on error
 864  */
 865 static ssize_t dom_lock_show(struct kobject *kobj, struct attribute *attr,
 866                              char *buf)
 867 {
 868         struct obd_device *obd = container_of(kobj, struct obd_device,
 869                                               obd_kset.kobj);
 870         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 871
 872         return scnprintf(buf, PAGE_SIZE, "%s\n",
 873                          dom_open_lock_modes[mdt->mdt_opts.mo_dom_lock]);
 874 }
 875
 876 /**
 877  * Change MDT policy for data prefetch on open for DoM files.
 878  *
 879  * This variable defines how DOM lock is taken at open enqueue.
 880  * There are three possible modes:
 881  * 1) never - never take DoM lock on open. DoM lock will be taken as separate
 882  *    IO lock with own enqueue.
 883  * 2) trylock - DoM lock will be taken only if non-blocked.
 884  * 3) always - DoM lock will be taken always even if it is blocking lock.
 885  *
 886  * If dom_read_open is enabled too then DoM lock is taken in PR mode and
 887  * is paired with LAYOUT lock when possible.
 888  *
 889  * \param[in] file      proc file
 890  * \param[in] buffer    string which represents policy
 891  * \param[in] count     \a buffer length
 892  * \param[in] off       unused for single entry
 893  *
 894  * \retval              \a count on success
 895  * \retval              negative number on error
 896  */
 897 static ssize_t dom_lock_store(struct kobject *kobj, struct attribute *attr,
 898                               const char *buffer, size_t count)
 899 {
 900         struct obd_device *obd = container_of(kobj, struct obd_device,
 901                                               obd_kset.kobj);
 902         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 903         int val = -1;
 904         int i, rc;
 905
 906         if (count == 0 || count >= DOM_LOCK_MODES_MAXLEN)
 907                 return -EINVAL;
 908
 909         for (i = 0 ; i < NUM_DOM_LOCK_ON_OPEN_MODES; i++) {
 910                 /* buffer might have '\n' but using strlen() avoids it */
 911                 if (strncmp(buffer, dom_open_lock_modes[i],
 912                             strlen(dom_open_lock_modes[i])) == 0) {
 913                         val = i;
 914                         break;
 915                 }
 916         }
 917
 918         /* Legacy numeric codes */
 919         if (val == -1) {
 920                 rc = kstrtoint(buffer, 0, &val);
 921                 if (rc)
 922                         return rc;
 923         }
 924
 925         if (val < 0 || val >= NUM_DOM_LOCK_ON_OPEN_MODES)
 926                 return -EINVAL;
 927
 928         mdt->mdt_opts.mo_dom_lock = val;
 929         return count;
 930 }
 931 LUSTRE_RW_ATTR(dom_lock);
 932
 933 /**
 934  * Show MDT policy for data prefetch on open for DoM files..
 935  *
 936  * \param[in] m         seq_file handle
 937  * \param[in] data      unused
 938  *
 939  * \retval              0 on success
 940  * \retval              negative value on error
 941  */
 942 static ssize_t dom_read_open_show(struct kobject *kobj,
 943                                   struct attribute *attr, char *buf)
 944 {
 945         struct obd_device *obd = container_of(kobj, struct obd_device,
 946                                               obd_kset.kobj);
 947         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 948
 949         return scnprintf(buf, PAGE_SIZE, "%u\n",
 950                          !!mdt->mdt_opts.mo_dom_read_open);
 951 }
 952
 953 /**
 954  * Modify MDT policy for data prefetch on open for DoM files.
 955  *
 956  * If enabled then Data-on-MDT file data may be read during open and
 957  * returned back in reply. It works only with mo_dom_lock enabled.
 958  *
 959  * \param[in] file      proc file
 960  * \param[in] buffer    string which represents policy
 961  * \param[in] count     \a buffer length
 962  * \param[in] off       unused for single entry
 963  *
 964  * \retval              \a count on success
 965  * \retval              negative number on error
 966  */
 967 static ssize_t dom_read_open_store(struct kobject *kobj,
 968                                    struct attribute *attr, const char *buffer,
 969                                    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_opts.mo_dom_read_open = !!val;
 982         return count;
 983 }
 984 LUSTRE_RW_ATTR(dom_read_open);
 985
 986 static ssize_t migrate_hsm_allowed_show(struct kobject *kobj,
 987                                         struct attribute *attr, char *buf)
 988 {
 989         struct obd_device *obd = container_of(kobj, struct obd_device,
 990                                               obd_kset.kobj);
 991         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 992
 993         return scnprintf(buf, PAGE_SIZE, "%u\n",
 994                          mdt->mdt_opts.mo_migrate_hsm_allowed);
 995 }
 996
 997 static ssize_t migrate_hsm_allowed_store(struct kobject *kobj,
 998                                          struct attribute *attr,
 999                                          const char *buffer, size_t count)
1000 {
1001         struct obd_device *obd = container_of(kobj, struct obd_device,
1002                                               obd_kset.kobj);
1003         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1004         bool val;
1005         int rc;
1006
1007         rc = kstrtobool(buffer, &val);
1008         if (rc)
1009                 return rc;
1010
1011         mdt->mdt_opts.mo_migrate_hsm_allowed = val;
1012         return count;
1013 }
1014 LUSTRE_RW_ATTR(migrate_hsm_allowed);
1015
1016 static ssize_t readonly_show(struct kobject *kobj, struct attribute *attr,
1017                              char *buf)
1018 {
1019         struct obd_device *obd = container_of(kobj, struct obd_device,
1020                                               obd_kset.kobj);
1021         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1022
1023         return scnprintf(buf, PAGE_SIZE, "%u\n", mdt->mdt_readonly);
1024 }
1025
1026 static ssize_t readonly_store(struct kobject *kobj, struct attribute *attr,
1027                               const char *buffer, size_t count)
1028 {
1029         struct obd_device *obd = container_of(kobj, struct obd_device,
1030                                               obd_kset.kobj);
1031         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1032         bool val;
1033         int rc;
1034
1035         rc = kstrtobool(buffer, &val);
1036         if (rc)
1037                 return rc;
1038
1039         mdt->mdt_readonly = val;
1040         return count;
1041 }
1042 LUSTRE_RW_ATTR(readonly);
1043
1044 static ssize_t enable_remote_rename_show(struct kobject *kobj,
1045                                          struct attribute *attr,
1046                                          char *buf)
1047 {
1048         struct obd_device *obd = container_of(kobj, struct obd_device,
1049                                               obd_kset.kobj);
1050         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1051
1052         return scnprintf(buf, PAGE_SIZE, "%u\n",
1053                          mdt->mdt_enable_remote_rename);
1054 }
1055
1056 static ssize_t enable_remote_rename_store(struct kobject *kobj,
1057                                           struct attribute *attr,
1058                                           const char *buffer, size_t count)
1059 {
1060         struct obd_device *obd = container_of(kobj, struct obd_device,
1061                                               obd_kset.kobj);
1062         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1063         bool val;
1064         int rc;
1065
1066         rc = kstrtobool(buffer, &val);
1067         if (rc)
1068                 return rc;
1069
1070         mdt->mdt_enable_remote_rename = val;
1071         return count;
1072 }
1073 LUSTRE_RW_ATTR(enable_remote_rename);
1074
1075 LPROC_SEQ_FOPS_RO_TYPE(mdt, hash);
1076 LPROC_SEQ_FOPS_WR_ONLY(mdt, mds_evict_client);
1077 LUSTRE_RW_ATTR(job_cleanup_interval);
1078 LPROC_SEQ_FOPS_RW_TYPE(mdt, nid_stats_clear);
1079 LUSTRE_RW_ATTR(hsm_control);
1080
1081 LPROC_SEQ_FOPS_RO_TYPE(mdt, recovery_status);
1082 LUSTRE_RW_ATTR(recovery_time_hard);
1083 LUSTRE_RW_ATTR(recovery_time_soft);
1084 LUSTRE_RW_ATTR(ir_factor);
1085
1086 LUSTRE_RO_ATTR(tot_dirty);
1087 LUSTRE_RO_ATTR(tot_granted);
1088 LUSTRE_RO_ATTR(tot_pending);
1089 LUSTRE_RW_ATTR(grant_compat_disable);
1090 LUSTRE_RO_ATTR(instance);
1091
1092 LUSTRE_RO_ATTR(num_exports);
1093
1094 static struct attribute *mdt_attrs[] = {
1095         &lustre_attr_tot_dirty.attr,
1096         &lustre_attr_tot_granted.attr,
1097         &lustre_attr_tot_pending.attr,
1098         &lustre_attr_grant_compat_disable.attr,
1099         &lustre_attr_instance.attr,
1100         &lustre_attr_recovery_time_hard.attr,
1101         &lustre_attr_recovery_time_soft.attr,
1102         &lustre_attr_ir_factor.attr,
1103         &lustre_attr_num_exports.attr,
1104         &lustre_attr_identity_expire.attr,
1105         &lustre_attr_identity_acquire_expire.attr,
1106         &lustre_attr_identity_upcall.attr,
1107         &lustre_attr_identity_flush.attr,
1108         &lustre_attr_evict_tgt_nids.attr,
1109         &lustre_attr_enable_remote_dir.attr,
1110         &lustre_attr_enable_remote_dir_gid.attr,
1111         &lustre_attr_enable_chprojid_gid.attr,
1112         &lustre_attr_enable_striped_dir.attr,
1113         &lustre_attr_enable_dir_migration.attr,
1114         &lustre_attr_enable_remote_rename.attr,
1115         &lustre_attr_commit_on_sharing.attr,
1116         &lustre_attr_local_recovery.attr,
1117         &lustre_attr_async_commit_count.attr,
1118         &lustre_attr_sync_count.attr,
1119         &lustre_attr_dom_lock.attr,
1120         &lustre_attr_dom_read_open.attr,
1121         &lustre_attr_migrate_hsm_allowed.attr,
1122         &lustre_attr_hsm_control.attr,
1123         &lustre_attr_job_cleanup_interval.attr,
1124         &lustre_attr_readonly.attr,
1125         NULL,
1126 };
1127
1128 static struct lprocfs_vars lprocfs_mdt_obd_vars[] = {
1129         { .name =       "recovery_status",
1130           .fops =       &mdt_recovery_status_fops               },
1131         { .name =       "identity_info",
1132           .fops =       &mdt_identity_info_fops                 },
1133         { .name =       "site_stats",
1134           .fops =       &mdt_site_stats_fops                    },
1135         { .name =       "evict_client",
1136           .fops =       &mdt_mds_evict_client_fops              },
1137         { .name =       "hash_stats",
1138           .fops =       &mdt_hash_fops                          },
1139         { .name =       "root_squash",
1140           .fops =       &mdt_root_squash_fops                   },
1141         { .name =       "nosquash_nids",
1142           .fops =       &mdt_nosquash_nids_fops                 },
1143         { NULL }
1144 };
1145
1146 static int
1147 lprocfs_mdt_print_open_files(struct cfs_hash *hs, struct cfs_hash_bd *bd,
1148                              struct hlist_node *hnode, void *v)
1149 {
1150         struct obd_export       *exp = cfs_hash_object(hs, hnode);
1151         struct seq_file         *seq = v;
1152
1153         if (exp->exp_lock_hash != NULL) {
1154                 struct mdt_export_data  *med = &exp->exp_mdt_data;
1155                 struct mdt_file_data    *mfd;
1156
1157                 spin_lock(&med->med_open_lock);
1158                 list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
1159                         seq_printf(seq, DFID"\n",
1160                                    PFID(mdt_object_fid(mfd->mfd_object)));
1161                 }
1162                 spin_unlock(&med->med_open_lock);
1163         }
1164
1165         return 0;
1166 }
1167
1168 static int lprocfs_mdt_open_files_seq_show(struct seq_file *seq, void *v)
1169 {
1170         struct nid_stat *stats = seq->private;
1171         struct obd_device *obd = stats->nid_obd;
1172
1173         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
1174                               lprocfs_mdt_print_open_files, seq);
1175
1176         return 0;
1177 }
1178
1179 int lprocfs_mdt_open_files_seq_open(struct inode *inode, struct file *file)
1180 {
1181         struct seq_file         *seq;
1182         int                     rc;
1183
1184         rc = single_open(file, &lprocfs_mdt_open_files_seq_show, NULL);
1185         if (rc != 0)
1186                 return rc;
1187
1188         seq = file->private_data;
1189         seq->private = PDE_DATA(inode);
1190
1191         return 0;
1192 }
1193
1194 void mdt_counter_incr(struct ptlrpc_request *req, int opcode)
1195 {
1196         struct obd_export *exp = req->rq_export;
1197
1198         if (exp->exp_obd && exp->exp_obd->obd_md_stats)
1199                 lprocfs_counter_incr(exp->exp_obd->obd_md_stats,
1200                                      opcode + LPROC_MD_LAST_OPC);
1201         if (exp->exp_nid_stats && exp->exp_nid_stats->nid_stats != NULL)
1202                 lprocfs_counter_incr(exp->exp_nid_stats->nid_stats, opcode);
1203         if (exp->exp_obd && exp->exp_obd->u.obt.obt_jobstats.ojs_hash &&
1204             (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS))
1205                 lprocfs_job_stats_log(exp->exp_obd,
1206                                       lustre_msg_get_jobid(req->rq_reqmsg),
1207                                       opcode, 1);
1208 }
1209
1210 static const char * const mdt_stats[] = {
1211         [LPROC_MDT_OPEN]                = "open",
1212         [LPROC_MDT_CLOSE]               = "close",
1213         [LPROC_MDT_MKNOD]               = "mknod",
1214         [LPROC_MDT_LINK]                = "link",
1215         [LPROC_MDT_UNLINK]              = "unlink",
1216         [LPROC_MDT_MKDIR]               = "mkdir",
1217         [LPROC_MDT_RMDIR]               = "rmdir",
1218         [LPROC_MDT_RENAME]              = "rename",
1219         [LPROC_MDT_GETATTR]             = "getattr",
1220         [LPROC_MDT_SETATTR]             = "setattr",
1221         [LPROC_MDT_GETXATTR]            = "getxattr",
1222         [LPROC_MDT_SETXATTR]            = "setxattr",
1223         [LPROC_MDT_STATFS]              = "statfs",
1224         [LPROC_MDT_SYNC]                = "sync",
1225         [LPROC_MDT_SAMEDIR_RENAME]      = "samedir_rename",
1226         [LPROC_MDT_CROSSDIR_RENAME]     = "crossdir_rename",
1227         [LPROC_MDT_IO_READ]             = "read_bytes",
1228         [LPROC_MDT_IO_WRITE]            = "write_bytes",
1229         [LPROC_MDT_IO_PUNCH]            = "punch",
1230         [LPROC_MDT_MIGRATE]             = "migrate",
1231 };
1232
1233 void mdt_stats_counter_init(struct lprocfs_stats *stats)
1234 {
1235         int idx;
1236
1237         LASSERT(stats && stats->ls_num >= ARRAY_SIZE(mdt_stats));
1238
1239         for (idx = 0; idx < ARRAY_SIZE(mdt_stats); idx++) {
1240                 int flags = 0;
1241
1242                 if (idx == LPROC_MDT_IO_WRITE || idx == LPROC_MDT_IO_READ)
1243                         flags = LPROCFS_CNTR_AVGMINMAX;
1244
1245                 lprocfs_counter_init(stats, idx, flags, mdt_stats[idx], "reqs");
1246         }
1247 }
1248
1249 int mdt_tunables_init(struct mdt_device *mdt, const char *name)
1250 {
1251         struct obd_device *obd = mdt2obd_dev(mdt);
1252         int rc;
1253         int i;
1254
1255         ENTRY;
1256         LASSERT(name != NULL);
1257
1258         obd->obd_ktype.default_attrs = mdt_attrs;
1259         obd->obd_vars = lprocfs_mdt_obd_vars;
1260         rc = lprocfs_obd_setup(obd, true);
1261         if (rc) {
1262                 CERROR("%s: cannot create proc entries: rc = %d\n",
1263                        mdt_obd_name(mdt), rc);
1264                 return rc;
1265         }
1266
1267         rc = tgt_tunables_init(&mdt->mdt_lut);
1268         if (rc) {
1269                 CERROR("%s: failed to init target tunables: rc = %d\n",
1270                        mdt_obd_name(mdt), rc);
1271                 return rc;
1272         }
1273
1274         rc = hsm_cdt_tunables_init(mdt);
1275         if (rc) {
1276                 CERROR("%s: cannot create hsm proc entries: rc = %d\n",
1277                        mdt_obd_name(mdt), rc);
1278                 return rc;
1279         }
1280
1281         obd->obd_proc_exports_entry = proc_mkdir("exports",
1282                                                  obd->obd_proc_entry);
1283         if (obd->obd_proc_exports_entry)
1284                 lprocfs_add_simple(obd->obd_proc_exports_entry, "clear",
1285                                    obd, &mdt_nid_stats_clear_fops);
1286
1287         rc = lprocfs_alloc_md_stats(obd, ARRAY_SIZE(mdt_stats));
1288         if (rc)
1289                 return rc;
1290
1291         /* add additional MDT md_stats after the default ones */
1292         for (i = 0; i < ARRAY_SIZE(mdt_stats); i++) {
1293                 int idx = i + LPROC_MD_LAST_OPC;
1294                 int flags = 0;
1295
1296                 if (idx == LPROC_MDT_IO_WRITE || idx == LPROC_MDT_IO_READ)
1297                         flags = LPROCFS_CNTR_AVGMINMAX;
1298
1299                 lprocfs_counter_init(obd->obd_md_stats, idx, flags,
1300                                      mdt_stats[i], "reqs");
1301         }
1302
1303         rc = lprocfs_job_stats_init(obd, ARRAY_SIZE(mdt_stats),
1304                                     mdt_stats_counter_init);
1305
1306         rc = lproc_mdt_attach_rename_seqstat(mdt);
1307         if (rc)
1308                 CERROR("%s: MDT can not create rename stats rc = %d\n",
1309                        mdt_obd_name(mdt), rc);
1310
1311         RETURN(rc);
1312 }
1313
1314 void mdt_tunables_fini(struct mdt_device *mdt)
1315 {
1316         struct obd_device *obd = mdt2obd_dev(mdt);
1317
1318         if (obd->obd_proc_exports_entry != NULL) {
1319                 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
1320                 obd->obd_proc_exports_entry = NULL;
1321         }
1322
1323         lprocfs_free_per_client_stats(obd);
1324         /* hsm_cdt_tunables is disabled earlier than this to avoid
1325          * coordinator restart.
1326          */
1327         hsm_cdt_tunables_fini(mdt);
1328         tgt_tunables_fini(&mdt->mdt_lut);
1329         lprocfs_obd_cleanup(obd);
1330         lprocfs_free_md_stats(obd);
1331         lprocfs_free_obd_stats(obd);
1332         lprocfs_job_stats_fini(obd);
1333 }