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 static ssize_t enable_dir_restripe_show(struct kobject *kobj,
 769                                         struct attribute *attr, char *buf)
 770 {
 771         struct obd_device *obd = container_of(kobj, struct obd_device,
 772                                               obd_kset.kobj);
 773         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 774
 775         return scnprintf(buf, PAGE_SIZE, "%u\n", mdt->mdt_enable_dir_restripe);
 776 }
 777
 778 static ssize_t enable_dir_restripe_store(struct kobject *kobj,
 779                                          struct attribute *attr,
 780                                          const char *buffer, size_t count)
 781 {
 782         struct obd_device *obd = container_of(kobj, struct obd_device,
 783                                               obd_kset.kobj);
 784         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 785         bool val;
 786         int rc;
 787
 788         rc = kstrtobool(buffer, &val);
 789         if (rc)
 790                 return rc;
 791
 792         mdt->mdt_enable_dir_restripe = val;
 793         return count;
 794 }
 795 LUSTRE_RW_ATTR(enable_dir_restripe);
 796
 797 static ssize_t enable_dir_auto_split_show(struct kobject *kobj,
 798                                           struct attribute *attr, char *buf)
 799 {
 800         struct obd_device *obd = container_of(kobj, struct obd_device,
 801                                               obd_kset.kobj);
 802         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 803
 804         return scnprintf(buf, PAGE_SIZE, "%u\n",
 805                          mdt->mdt_enable_dir_auto_split);
 806 }
 807
 808 static ssize_t enable_dir_auto_split_store(struct kobject *kobj,
 809                                            struct attribute *attr,
 810                                            const char *buffer, size_t count)
 811 {
 812         struct obd_device *obd = container_of(kobj, struct obd_device,
 813                                               obd_kset.kobj);
 814         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 815         bool val;
 816         int rc;
 817
 818         rc = kstrtobool(buffer, &val);
 819         if (rc)
 820                 return rc;
 821
 822         mdt->mdt_enable_dir_auto_split = val;
 823         return count;
 824 }
 825 LUSTRE_RW_ATTR(enable_dir_auto_split);
 826
 827 /**
 828  * Show MDT async commit count.
 829  *
 830  * @m           seq_file handle
 831  * @data        unused for single entry
 832  *
 833  * Return:      0 on success
 834  *              negative value on error
 835  */
 836 static ssize_t async_commit_count_show(struct kobject *kobj,
 837                                        struct attribute *attr, char *buf)
 838 {
 839         struct obd_device *obd = container_of(kobj, struct obd_device,
 840                                               obd_kset.kobj);
 841         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 842
 843         return scnprintf(buf, PAGE_SIZE, "%d\n",
 844                          atomic_read(&mdt->mdt_async_commit_count));
 845 }
 846
 847 static ssize_t async_commit_count_store(struct kobject *kobj,
 848                                         struct attribute *attr,
 849                                         const char *buffer, size_t count)
 850 {
 851         struct obd_device *obd = container_of(kobj, struct obd_device,
 852                                               obd_kset.kobj);
 853         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 854         int val;
 855         int rc;
 856
 857         rc = kstrtoint(buffer, 10, &val);
 858         if (rc)
 859                 return rc;
 860
 861         atomic_set(&mdt->mdt_async_commit_count, val);
 862
 863         return count;
 864 }
 865 LUSTRE_RW_ATTR(async_commit_count);
 866
 867 /**
 868  * Show MDT sync count.
 869  *
 870  * \param[in] m         seq_file handle
 871  * \param[in] data      unused for single entry
 872  *
 873  * \retval              0 on success
 874  * \retval              negative value on error
 875  */
 876 static ssize_t sync_count_show(struct kobject *kobj, struct attribute *attr,
 877                                char *buf)
 878 {
 879         struct obd_device *obd = container_of(kobj, struct obd_device,
 880                                               obd_kset.kobj);
 881         struct lu_target *tgt = obd->u.obt.obt_lut;
 882
 883         return scnprintf(buf, PAGE_SIZE, "%d\n",
 884                          atomic_read(&tgt->lut_sync_count));
 885 }
 886
 887 static ssize_t sync_count_store(struct kobject *kobj, struct attribute *attr,
 888                                 const char *buffer, size_t count)
 889 {
 890         struct obd_device *obd = container_of(kobj, struct obd_device,
 891                                               obd_kset.kobj);
 892         struct lu_target *tgt = obd->u.obt.obt_lut;
 893         int val;
 894         int rc;
 895
 896         rc = kstrtoint(buffer, 0, &val);
 897         if (rc)
 898                 return rc;
 899
 900         atomic_set(&tgt->lut_sync_count, val);
 901
 902         return count;
 903 }
 904 LUSTRE_RW_ATTR(sync_count);
 905
 906 static const char *dom_open_lock_modes[NUM_DOM_LOCK_ON_OPEN_MODES] = {
 907         [NO_DOM_LOCK_ON_OPEN] = "never",
 908         [TRYLOCK_DOM_ON_OPEN] = "trylock",
 909         [ALWAYS_DOM_LOCK_ON_OPEN] = "always",
 910 };
 911
 912 /* This must be longer than the longest string above */
 913 #define DOM_LOCK_MODES_MAXLEN 16
 914
 915 /**
 916  * Show MDT policy for data prefetch on open for DoM files..
 917  *
 918  * \param[in] m         seq_file handle
 919  * \param[in] data      unused
 920  *
 921  * \retval              0 on success
 922  * \retval              negative value on error
 923  */
 924 static ssize_t dom_lock_show(struct kobject *kobj, struct attribute *attr,
 925                              char *buf)
 926 {
 927         struct obd_device *obd = container_of(kobj, struct obd_device,
 928                                               obd_kset.kobj);
 929         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 930
 931         return scnprintf(buf, PAGE_SIZE, "%s\n",
 932                          dom_open_lock_modes[mdt->mdt_opts.mo_dom_lock]);
 933 }
 934
 935 /**
 936  * Change MDT policy for data prefetch on open for DoM files.
 937  *
 938  * This variable defines how DOM lock is taken at open enqueue.
 939  * There are three possible modes:
 940  * 1) never - never take DoM lock on open. DoM lock will be taken as separate
 941  *    IO lock with own enqueue.
 942  * 2) trylock - DoM lock will be taken only if non-blocked.
 943  * 3) always - DoM lock will be taken always even if it is blocking lock.
 944  *
 945  * If dom_read_open is enabled too then DoM lock is taken in PR mode and
 946  * is paired with LAYOUT lock when possible.
 947  *
 948  * \param[in] file      proc file
 949  * \param[in] buffer    string which represents policy
 950  * \param[in] count     \a buffer length
 951  * \param[in] off       unused for single entry
 952  *
 953  * \retval              \a count on success
 954  * \retval              negative number on error
 955  */
 956 static ssize_t dom_lock_store(struct kobject *kobj, struct attribute *attr,
 957                               const char *buffer, size_t count)
 958 {
 959         struct obd_device *obd = container_of(kobj, struct obd_device,
 960                                               obd_kset.kobj);
 961         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
 962         int val = -1;
 963         int i, rc;
 964
 965         if (count == 0 || count >= DOM_LOCK_MODES_MAXLEN)
 966                 return -EINVAL;
 967
 968         for (i = 0 ; i < NUM_DOM_LOCK_ON_OPEN_MODES; i++) {
 969                 /* buffer might have '\n' but using strlen() avoids it */
 970                 if (strncmp(buffer, dom_open_lock_modes[i],
 971                             strlen(dom_open_lock_modes[i])) == 0) {
 972                         val = i;
 973                         break;
 974                 }
 975         }
 976
 977         /* Legacy numeric codes */
 978         if (val == -1) {
 979                 rc = kstrtoint(buffer, 0, &val);
 980                 if (rc)
 981                         return rc;
 982         }
 983
 984         if (val < 0 || val >= NUM_DOM_LOCK_ON_OPEN_MODES)
 985                 return -EINVAL;
 986
 987         mdt->mdt_opts.mo_dom_lock = val;
 988         return count;
 989 }
 990 LUSTRE_RW_ATTR(dom_lock);
 991
 992 /**
 993  * Show MDT policy for data prefetch on open for DoM files..
 994  *
 995  * \param[in] m         seq_file handle
 996  * \param[in] data      unused
 997  *
 998  * \retval              0 on success
 999  * \retval              negative value on error
1000  */
1001 static ssize_t dom_read_open_show(struct kobject *kobj,
1002                                   struct attribute *attr, char *buf)
1003 {
1004         struct obd_device *obd = container_of(kobj, struct obd_device,
1005                                               obd_kset.kobj);
1006         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1007
1008         return scnprintf(buf, PAGE_SIZE, "%u\n",
1009                          !!mdt->mdt_opts.mo_dom_read_open);
1010 }
1011
1012 /**
1013  * Modify MDT policy for data prefetch on open for DoM files.
1014  *
1015  * If enabled then Data-on-MDT file data may be read during open and
1016  * returned back in reply. It works only with mo_dom_lock enabled.
1017  *
1018  * \param[in] file      proc file
1019  * \param[in] buffer    string which represents policy
1020  * \param[in] count     \a buffer length
1021  * \param[in] off       unused for single entry
1022  *
1023  * \retval              \a count on success
1024  * \retval              negative number on error
1025  */
1026 static ssize_t dom_read_open_store(struct kobject *kobj,
1027                                    struct attribute *attr, const char *buffer,
1028                                    size_t count)
1029 {
1030         struct obd_device *obd = container_of(kobj, struct obd_device,
1031                                               obd_kset.kobj);
1032         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1033         bool val;
1034         int rc;
1035
1036         rc = kstrtobool(buffer, &val);
1037         if (rc)
1038                 return rc;
1039
1040         mdt->mdt_opts.mo_dom_read_open = !!val;
1041         return count;
1042 }
1043 LUSTRE_RW_ATTR(dom_read_open);
1044
1045 static ssize_t migrate_hsm_allowed_show(struct kobject *kobj,
1046                                         struct attribute *attr, 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_opts.mo_migrate_hsm_allowed);
1054 }
1055
1056 static ssize_t migrate_hsm_allowed_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_opts.mo_migrate_hsm_allowed = val;
1071         return count;
1072 }
1073 LUSTRE_RW_ATTR(migrate_hsm_allowed);
1074
1075 static ssize_t readonly_show(struct kobject *kobj, struct attribute *attr,
1076                              char *buf)
1077 {
1078         struct obd_device *obd = container_of(kobj, struct obd_device,
1079                                               obd_kset.kobj);
1080         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1081
1082         return scnprintf(buf, PAGE_SIZE, "%u\n", mdt->mdt_readonly);
1083 }
1084
1085 static ssize_t readonly_store(struct kobject *kobj, struct attribute *attr,
1086                               const char *buffer, size_t count)
1087 {
1088         struct obd_device *obd = container_of(kobj, struct obd_device,
1089                                               obd_kset.kobj);
1090         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1091         bool val;
1092         int rc;
1093
1094         rc = kstrtobool(buffer, &val);
1095         if (rc)
1096                 return rc;
1097
1098         mdt->mdt_readonly = val;
1099         return count;
1100 }
1101 LUSTRE_RW_ATTR(readonly);
1102
1103 static ssize_t enable_remote_rename_show(struct kobject *kobj,
1104                                          struct attribute *attr,
1105                                          char *buf)
1106 {
1107         struct obd_device *obd = container_of(kobj, struct obd_device,
1108                                               obd_kset.kobj);
1109         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1110
1111         return scnprintf(buf, PAGE_SIZE, "%u\n",
1112                          mdt->mdt_enable_remote_rename);
1113 }
1114
1115 static ssize_t enable_remote_rename_store(struct kobject *kobj,
1116                                           struct attribute *attr,
1117                                           const char *buffer, size_t count)
1118 {
1119         struct obd_device *obd = container_of(kobj, struct obd_device,
1120                                               obd_kset.kobj);
1121         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1122         bool val;
1123         int rc;
1124
1125         rc = kstrtobool(buffer, &val);
1126         if (rc)
1127                 return rc;
1128
1129         mdt->mdt_enable_remote_rename = val;
1130         return count;
1131 }
1132 LUSTRE_RW_ATTR(enable_remote_rename);
1133
1134 static ssize_t dir_split_count_show(struct kobject *kobj,
1135                                      struct attribute *attr,
1136                                      char *buf)
1137 {
1138         struct obd_device *obd = container_of(kobj, struct obd_device,
1139                                               obd_kset.kobj);
1140         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1141
1142         return scnprintf(buf, PAGE_SIZE, "%llu\n",
1143                          mdt->mdt_restriper.mdr_dir_split_count);
1144 }
1145
1146 static ssize_t dir_split_count_store(struct kobject *kobj,
1147                                       struct attribute *attr,
1148                                       const char *buffer, size_t count)
1149 {
1150         struct obd_device *obd = container_of(kobj, struct obd_device,
1151                                               obd_kset.kobj);
1152         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1153         s64 val;
1154         int rc;
1155
1156         rc = sysfs_memparse(buffer, count, &val, "B");
1157         if (rc < 0)
1158                 return rc;
1159
1160         if (val < 0)
1161                 return -ERANGE;
1162
1163         mdt->mdt_restriper.mdr_dir_split_count = val;
1164
1165         return count;
1166 }
1167 LUSTRE_RW_ATTR(dir_split_count);
1168
1169 static ssize_t dir_split_delta_show(struct kobject *kobj,
1170                                     struct attribute *attr,
1171                                     char *buf)
1172 {
1173         struct obd_device *obd = container_of(kobj, struct obd_device,
1174                                               obd_kset.kobj);
1175         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1176
1177         return scnprintf(buf, PAGE_SIZE, "%u\n",
1178                          mdt->mdt_restriper.mdr_dir_split_delta);
1179 }
1180
1181 static ssize_t dir_split_delta_store(struct kobject *kobj,
1182                                      struct attribute *attr,
1183                                      const char *buffer, size_t count)
1184 {
1185         struct obd_device *obd = container_of(kobj, struct obd_device,
1186                                               obd_kset.kobj);
1187         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1188         u32 val;
1189         int rc;
1190
1191         rc = kstrtouint(buffer, 0, &val);
1192         if (rc)
1193                 return rc;
1194
1195         mdt->mdt_restriper.mdr_dir_split_delta = val;
1196
1197         return count;
1198 }
1199 LUSTRE_RW_ATTR(dir_split_delta);
1200
1201 static ssize_t dir_restripe_nsonly_show(struct kobject *kobj,
1202                                         struct attribute *attr, char *buf)
1203 {
1204         struct obd_device *obd = container_of(kobj, struct obd_device,
1205                                               obd_kset.kobj);
1206         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1207
1208         return scnprintf(buf, PAGE_SIZE, "%u\n", mdt->mdt_dir_restripe_nsonly);
1209 }
1210
1211 static ssize_t dir_restripe_nsonly_store(struct kobject *kobj,
1212                                          struct attribute *attr,
1213                                          const char *buffer, size_t count)
1214 {
1215         struct obd_device *obd = container_of(kobj, struct obd_device,
1216                                               obd_kset.kobj);
1217         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1218         bool val;
1219         int rc;
1220
1221         rc = kstrtobool(buffer, &val);
1222         if (rc)
1223                 return rc;
1224
1225         mdt->mdt_dir_restripe_nsonly = val;
1226         return count;
1227 }
1228 LUSTRE_RW_ATTR(dir_restripe_nsonly);
1229
1230 LPROC_SEQ_FOPS_RO_TYPE(mdt, hash);
1231 LPROC_SEQ_FOPS_WR_ONLY(mdt, mds_evict_client);
1232 LUSTRE_RW_ATTR(job_cleanup_interval);
1233 LPROC_SEQ_FOPS_RW_TYPE(mdt, nid_stats_clear);
1234 LUSTRE_RW_ATTR(hsm_control);
1235
1236 LPROC_SEQ_FOPS_RO_TYPE(mdt, recovery_status);
1237 LUSTRE_RW_ATTR(recovery_time_hard);
1238 LUSTRE_RW_ATTR(recovery_time_soft);
1239 LUSTRE_RW_ATTR(ir_factor);
1240
1241 LUSTRE_RO_ATTR(tot_dirty);
1242 LUSTRE_RO_ATTR(tot_granted);
1243 LUSTRE_RO_ATTR(tot_pending);
1244 LUSTRE_RW_ATTR(grant_compat_disable);
1245 LUSTRE_RO_ATTR(instance);
1246
1247 LUSTRE_RO_ATTR(num_exports);
1248
1249 static struct attribute *mdt_attrs[] = {
1250         &lustre_attr_tot_dirty.attr,
1251         &lustre_attr_tot_granted.attr,
1252         &lustre_attr_tot_pending.attr,
1253         &lustre_attr_grant_compat_disable.attr,
1254         &lustre_attr_instance.attr,
1255         &lustre_attr_recovery_time_hard.attr,
1256         &lustre_attr_recovery_time_soft.attr,
1257         &lustre_attr_ir_factor.attr,
1258         &lustre_attr_num_exports.attr,
1259         &lustre_attr_identity_expire.attr,
1260         &lustre_attr_identity_acquire_expire.attr,
1261         &lustre_attr_identity_upcall.attr,
1262         &lustre_attr_identity_flush.attr,
1263         &lustre_attr_evict_tgt_nids.attr,
1264         &lustre_attr_enable_remote_dir.attr,
1265         &lustre_attr_enable_remote_dir_gid.attr,
1266         &lustre_attr_enable_chprojid_gid.attr,
1267         &lustre_attr_enable_striped_dir.attr,
1268         &lustre_attr_enable_dir_migration.attr,
1269         &lustre_attr_enable_dir_restripe.attr,
1270         &lustre_attr_enable_dir_auto_split.attr,
1271         &lustre_attr_enable_remote_rename.attr,
1272         &lustre_attr_commit_on_sharing.attr,
1273         &lustre_attr_local_recovery.attr,
1274         &lustre_attr_async_commit_count.attr,
1275         &lustre_attr_sync_count.attr,
1276         &lustre_attr_dom_lock.attr,
1277         &lustre_attr_dom_read_open.attr,
1278         &lustre_attr_migrate_hsm_allowed.attr,
1279         &lustre_attr_hsm_control.attr,
1280         &lustre_attr_job_cleanup_interval.attr,
1281         &lustre_attr_readonly.attr,
1282         &lustre_attr_dir_split_count.attr,
1283         &lustre_attr_dir_split_delta.attr,
1284         &lustre_attr_dir_restripe_nsonly.attr,
1285         NULL,
1286 };
1287
1288 static struct lprocfs_vars lprocfs_mdt_obd_vars[] = {
1289         { .name =       "recovery_status",
1290           .fops =       &mdt_recovery_status_fops               },
1291         { .name =       "identity_info",
1292           .fops =       &mdt_identity_info_fops                 },
1293         { .name =       "site_stats",
1294           .fops =       &mdt_site_stats_fops                    },
1295         { .name =       "evict_client",
1296           .fops =       &mdt_mds_evict_client_fops              },
1297         { .name =       "hash_stats",
1298           .fops =       &mdt_hash_fops                          },
1299         { .name =       "root_squash",
1300           .fops =       &mdt_root_squash_fops                   },
1301         { .name =       "nosquash_nids",
1302           .fops =       &mdt_nosquash_nids_fops                 },
1303         { NULL }
1304 };
1305
1306 static int
1307 lprocfs_mdt_print_open_files(struct obd_export *exp, void *v)
1308 {
1309         struct seq_file         *seq = v;
1310
1311         if (exp->exp_lock_hash != NULL) {
1312                 struct mdt_export_data  *med = &exp->exp_mdt_data;
1313                 struct mdt_file_data    *mfd;
1314
1315                 spin_lock(&med->med_open_lock);
1316                 list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
1317                         seq_printf(seq, DFID"\n",
1318                                    PFID(mdt_object_fid(mfd->mfd_object)));
1319                 }
1320                 spin_unlock(&med->med_open_lock);
1321         }
1322
1323         return 0;
1324 }
1325
1326 static int lprocfs_mdt_open_files_seq_show(struct seq_file *seq, void *v)
1327 {
1328         struct nid_stat *stats = seq->private;
1329
1330         return obd_nid_export_for_each(stats->nid_obd, stats->nid,
1331                                        lprocfs_mdt_print_open_files, seq);
1332 }
1333
1334 int lprocfs_mdt_open_files_seq_open(struct inode *inode, struct file *file)
1335 {
1336         struct seq_file         *seq;
1337         int                     rc;
1338
1339         rc = single_open(file, &lprocfs_mdt_open_files_seq_show, NULL);
1340         if (rc != 0)
1341                 return rc;
1342
1343         seq = file->private_data;
1344         seq->private = PDE_DATA(inode);
1345
1346         return 0;
1347 }
1348
1349 void mdt_counter_incr(struct ptlrpc_request *req, int opcode)
1350 {
1351         struct obd_export *exp = req->rq_export;
1352
1353         if (exp->exp_obd && exp->exp_obd->obd_md_stats)
1354                 lprocfs_counter_incr(exp->exp_obd->obd_md_stats,
1355                                      opcode + LPROC_MD_LAST_OPC);
1356         if (exp->exp_nid_stats && exp->exp_nid_stats->nid_stats != NULL)
1357                 lprocfs_counter_incr(exp->exp_nid_stats->nid_stats, opcode);
1358         if (exp->exp_obd && exp->exp_obd->u.obt.obt_jobstats.ojs_hash &&
1359             (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS))
1360                 lprocfs_job_stats_log(exp->exp_obd,
1361                                       lustre_msg_get_jobid(req->rq_reqmsg),
1362                                       opcode, 1);
1363 }
1364
1365 static const char * const mdt_stats[] = {
1366         [LPROC_MDT_OPEN]                = "open",
1367         [LPROC_MDT_CLOSE]               = "close",
1368         [LPROC_MDT_MKNOD]               = "mknod",
1369         [LPROC_MDT_LINK]                = "link",
1370         [LPROC_MDT_UNLINK]              = "unlink",
1371         [LPROC_MDT_MKDIR]               = "mkdir",
1372         [LPROC_MDT_RMDIR]               = "rmdir",
1373         [LPROC_MDT_RENAME]              = "rename",
1374         [LPROC_MDT_GETATTR]             = "getattr",
1375         [LPROC_MDT_SETATTR]             = "setattr",
1376         [LPROC_MDT_GETXATTR]            = "getxattr",
1377         [LPROC_MDT_SETXATTR]            = "setxattr",
1378         [LPROC_MDT_STATFS]              = "statfs",
1379         [LPROC_MDT_SYNC]                = "sync",
1380         [LPROC_MDT_SAMEDIR_RENAME]      = "samedir_rename",
1381         [LPROC_MDT_CROSSDIR_RENAME]     = "crossdir_rename",
1382         [LPROC_MDT_IO_READ]             = "read_bytes",
1383         [LPROC_MDT_IO_WRITE]            = "write_bytes",
1384         [LPROC_MDT_IO_PUNCH]            = "punch",
1385         [LPROC_MDT_MIGRATE]             = "migrate",
1386 };
1387
1388 void mdt_stats_counter_init(struct lprocfs_stats *stats)
1389 {
1390         int idx;
1391
1392         LASSERT(stats && stats->ls_num >= ARRAY_SIZE(mdt_stats));
1393
1394         for (idx = 0; idx < ARRAY_SIZE(mdt_stats); idx++) {
1395                 int flags = 0;
1396
1397                 if (idx == LPROC_MDT_IO_WRITE || idx == LPROC_MDT_IO_READ)
1398                         flags = LPROCFS_CNTR_AVGMINMAX;
1399
1400                 lprocfs_counter_init(stats, idx, flags, mdt_stats[idx], "reqs");
1401         }
1402 }
1403
1404 int mdt_tunables_init(struct mdt_device *mdt, const char *name)
1405 {
1406         struct obd_device *obd = mdt2obd_dev(mdt);
1407         int rc;
1408         int i;
1409
1410         ENTRY;
1411         LASSERT(name != NULL);
1412
1413         obd->obd_ktype.default_attrs = mdt_attrs;
1414         obd->obd_vars = lprocfs_mdt_obd_vars;
1415         rc = lprocfs_obd_setup(obd, true);
1416         if (rc) {
1417                 CERROR("%s: cannot create proc entries: rc = %d\n",
1418                        mdt_obd_name(mdt), rc);
1419                 return rc;
1420         }
1421
1422         rc = tgt_tunables_init(&mdt->mdt_lut);
1423         if (rc) {
1424                 CERROR("%s: failed to init target tunables: rc = %d\n",
1425                        mdt_obd_name(mdt), rc);
1426                 return rc;
1427         }
1428
1429         rc = hsm_cdt_tunables_init(mdt);
1430         if (rc) {
1431                 CERROR("%s: cannot create hsm proc entries: rc = %d\n",
1432                        mdt_obd_name(mdt), rc);
1433                 return rc;
1434         }
1435
1436         obd->obd_proc_exports_entry = proc_mkdir("exports",
1437                                                  obd->obd_proc_entry);
1438         if (obd->obd_proc_exports_entry)
1439                 lprocfs_add_simple(obd->obd_proc_exports_entry, "clear",
1440                                    obd, &mdt_nid_stats_clear_fops);
1441
1442         rc = lprocfs_alloc_md_stats(obd, ARRAY_SIZE(mdt_stats));
1443         if (rc)
1444                 return rc;
1445
1446         /* add additional MDT md_stats after the default ones */
1447         for (i = 0; i < ARRAY_SIZE(mdt_stats); i++) {
1448                 int idx = i + LPROC_MD_LAST_OPC;
1449                 int flags = 0;
1450
1451                 if (idx == LPROC_MDT_IO_WRITE || idx == LPROC_MDT_IO_READ)
1452                         flags = LPROCFS_CNTR_AVGMINMAX;
1453
1454                 lprocfs_counter_init(obd->obd_md_stats, idx, flags,
1455                                      mdt_stats[i], "reqs");
1456         }
1457
1458         rc = lprocfs_job_stats_init(obd, ARRAY_SIZE(mdt_stats),
1459                                     mdt_stats_counter_init);
1460
1461         rc = lproc_mdt_attach_rename_seqstat(mdt);
1462         if (rc)
1463                 CERROR("%s: MDT can not create rename stats rc = %d\n",
1464                        mdt_obd_name(mdt), rc);
1465
1466         RETURN(rc);
1467 }
1468
1469 void mdt_tunables_fini(struct mdt_device *mdt)
1470 {
1471         struct obd_device *obd = mdt2obd_dev(mdt);
1472
1473         if (obd->obd_proc_exports_entry != NULL) {
1474                 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
1475                 obd->obd_proc_exports_entry = NULL;
1476         }
1477
1478         lprocfs_free_per_client_stats(obd);
1479         /* hsm_cdt_tunables is disabled earlier than this to avoid
1480          * coordinator restart.
1481          */
1482         hsm_cdt_tunables_fini(mdt);
1483         tgt_tunables_fini(&mdt->mdt_lut);
1484         lprocfs_obd_cleanup(obd);
1485         lprocfs_free_md_stats(obd);
1486         lprocfs_free_obd_stats(obd);
1487         lprocfs_job_stats_fini(obd);
1488 }