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, long count)
 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, count);
 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, count);
 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 == ALWAYS_DOM_LOCK_ON_OPEN)
 985                 val = TRYLOCK_DOM_ON_OPEN;
 986
 987         if (val < 0 || val >= NUM_DOM_LOCK_ON_OPEN_MODES)
 988                 return -EINVAL;
 989
 990         mdt->mdt_opts.mo_dom_lock = val;
 991         return count;
 992 }
 993 LUSTRE_RW_ATTR(dom_lock);
 994
 995 /**
 996  * Show MDT policy for data prefetch on open for DoM files..
 997  *
 998  * \param[in] m         seq_file handle
 999  * \param[in] data      unused
1000  *
1001  * \retval              0 on success
1002  * \retval              negative value on error
1003  */
1004 static ssize_t dom_read_open_show(struct kobject *kobj,
1005                                   struct attribute *attr, char *buf)
1006 {
1007         struct obd_device *obd = container_of(kobj, struct obd_device,
1008                                               obd_kset.kobj);
1009         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1010
1011         return scnprintf(buf, PAGE_SIZE, "%u\n",
1012                          !!mdt->mdt_opts.mo_dom_read_open);
1013 }
1014
1015 /**
1016  * Modify MDT policy for data prefetch on open for DoM files.
1017  *
1018  * If enabled then Data-on-MDT file data may be read during open and
1019  * returned back in reply. It works only with mo_dom_lock enabled.
1020  *
1021  * \param[in] file      proc file
1022  * \param[in] buffer    string which represents policy
1023  * \param[in] count     \a buffer length
1024  * \param[in] off       unused for single entry
1025  *
1026  * \retval              \a count on success
1027  * \retval              negative number on error
1028  */
1029 static ssize_t dom_read_open_store(struct kobject *kobj,
1030                                    struct attribute *attr, const char *buffer,
1031                                    size_t count)
1032 {
1033         struct obd_device *obd = container_of(kobj, struct obd_device,
1034                                               obd_kset.kobj);
1035         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1036         bool val;
1037         int rc;
1038
1039         rc = kstrtobool(buffer, &val);
1040         if (rc)
1041                 return rc;
1042
1043         mdt->mdt_opts.mo_dom_read_open = !!val;
1044         return count;
1045 }
1046 LUSTRE_RW_ATTR(dom_read_open);
1047
1048 static ssize_t migrate_hsm_allowed_show(struct kobject *kobj,
1049                                         struct attribute *attr, char *buf)
1050 {
1051         struct obd_device *obd = container_of(kobj, struct obd_device,
1052                                               obd_kset.kobj);
1053         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1054
1055         return scnprintf(buf, PAGE_SIZE, "%u\n",
1056                          mdt->mdt_opts.mo_migrate_hsm_allowed);
1057 }
1058
1059 static ssize_t migrate_hsm_allowed_store(struct kobject *kobj,
1060                                          struct attribute *attr,
1061                                          const char *buffer, size_t count)
1062 {
1063         struct obd_device *obd = container_of(kobj, struct obd_device,
1064                                               obd_kset.kobj);
1065         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1066         bool val;
1067         int rc;
1068
1069         rc = kstrtobool(buffer, &val);
1070         if (rc)
1071                 return rc;
1072
1073         mdt->mdt_opts.mo_migrate_hsm_allowed = val;
1074         return count;
1075 }
1076 LUSTRE_RW_ATTR(migrate_hsm_allowed);
1077
1078 static ssize_t readonly_show(struct kobject *kobj, struct attribute *attr,
1079                              char *buf)
1080 {
1081         struct obd_device *obd = container_of(kobj, struct obd_device,
1082                                               obd_kset.kobj);
1083         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1084
1085         return scnprintf(buf, PAGE_SIZE, "%u\n", mdt->mdt_readonly);
1086 }
1087
1088 static ssize_t readonly_store(struct kobject *kobj, struct attribute *attr,
1089                               const char *buffer, size_t count)
1090 {
1091         struct obd_device *obd = container_of(kobj, struct obd_device,
1092                                               obd_kset.kobj);
1093         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1094         bool val;
1095         int rc;
1096
1097         rc = kstrtobool(buffer, &val);
1098         if (rc)
1099                 return rc;
1100
1101         mdt->mdt_readonly = val;
1102         return count;
1103 }
1104 LUSTRE_RW_ATTR(readonly);
1105
1106 static ssize_t enable_remote_rename_show(struct kobject *kobj,
1107                                          struct attribute *attr,
1108                                          char *buf)
1109 {
1110         struct obd_device *obd = container_of(kobj, struct obd_device,
1111                                               obd_kset.kobj);
1112         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1113
1114         return scnprintf(buf, PAGE_SIZE, "%u\n",
1115                          mdt->mdt_enable_remote_rename);
1116 }
1117
1118 static ssize_t enable_remote_rename_store(struct kobject *kobj,
1119                                           struct attribute *attr,
1120                                           const char *buffer, size_t count)
1121 {
1122         struct obd_device *obd = container_of(kobj, struct obd_device,
1123                                               obd_kset.kobj);
1124         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1125         bool val;
1126         int rc;
1127
1128         rc = kstrtobool(buffer, &val);
1129         if (rc)
1130                 return rc;
1131
1132         mdt->mdt_enable_remote_rename = val;
1133         return count;
1134 }
1135 LUSTRE_RW_ATTR(enable_remote_rename);
1136
1137 static ssize_t dir_split_count_show(struct kobject *kobj,
1138                                      struct attribute *attr,
1139                                      char *buf)
1140 {
1141         struct obd_device *obd = container_of(kobj, struct obd_device,
1142                                               obd_kset.kobj);
1143         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1144
1145         return scnprintf(buf, PAGE_SIZE, "%llu\n",
1146                          mdt->mdt_restriper.mdr_dir_split_count);
1147 }
1148
1149 static ssize_t dir_split_count_store(struct kobject *kobj,
1150                                       struct attribute *attr,
1151                                       const char *buffer, size_t count)
1152 {
1153         struct obd_device *obd = container_of(kobj, struct obd_device,
1154                                               obd_kset.kobj);
1155         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1156         s64 val;
1157         int rc;
1158
1159         rc = sysfs_memparse(buffer, count, &val, "B");
1160         if (rc < 0)
1161                 return rc;
1162
1163         if (val < 0)
1164                 return -ERANGE;
1165
1166         mdt->mdt_restriper.mdr_dir_split_count = val;
1167
1168         return count;
1169 }
1170 LUSTRE_RW_ATTR(dir_split_count);
1171
1172 static ssize_t dir_split_delta_show(struct kobject *kobj,
1173                                     struct attribute *attr,
1174                                     char *buf)
1175 {
1176         struct obd_device *obd = container_of(kobj, struct obd_device,
1177                                               obd_kset.kobj);
1178         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1179
1180         return scnprintf(buf, PAGE_SIZE, "%u\n",
1181                          mdt->mdt_restriper.mdr_dir_split_delta);
1182 }
1183
1184 static ssize_t dir_split_delta_store(struct kobject *kobj,
1185                                      struct attribute *attr,
1186                                      const char *buffer, size_t count)
1187 {
1188         struct obd_device *obd = container_of(kobj, struct obd_device,
1189                                               obd_kset.kobj);
1190         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1191         u32 val;
1192         int rc;
1193
1194         rc = kstrtouint(buffer, 0, &val);
1195         if (rc)
1196                 return rc;
1197
1198         mdt->mdt_restriper.mdr_dir_split_delta = val;
1199
1200         return count;
1201 }
1202 LUSTRE_RW_ATTR(dir_split_delta);
1203
1204 static ssize_t dir_restripe_nsonly_show(struct kobject *kobj,
1205                                         struct attribute *attr, char *buf)
1206 {
1207         struct obd_device *obd = container_of(kobj, struct obd_device,
1208                                               obd_kset.kobj);
1209         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1210
1211         return scnprintf(buf, PAGE_SIZE, "%u\n", mdt->mdt_dir_restripe_nsonly);
1212 }
1213
1214 static ssize_t dir_restripe_nsonly_store(struct kobject *kobj,
1215                                          struct attribute *attr,
1216                                          const char *buffer, size_t count)
1217 {
1218         struct obd_device *obd = container_of(kobj, struct obd_device,
1219                                               obd_kset.kobj);
1220         struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
1221         bool val;
1222         int rc;
1223
1224         rc = kstrtobool(buffer, &val);
1225         if (rc)
1226                 return rc;
1227
1228         mdt->mdt_dir_restripe_nsonly = val;
1229         return count;
1230 }
1231 LUSTRE_RW_ATTR(dir_restripe_nsonly);
1232
1233 /**
1234  * Show if the OFD enforces T10PI checksum.
1235  *
1236  * \param[in] m         seq_file handle
1237  * \param[in] data      unused for single entry
1238  *
1239  * \retval              0 on success
1240  * \retval              negative value on error
1241  */
1242 static ssize_t checksum_t10pi_enforce_show(struct kobject *kobj,
1243                                            struct attribute *attr,
1244                                            char *buf)
1245 {
1246         struct obd_device *obd = container_of(kobj, struct obd_device,
1247                                               obd_kset.kobj);
1248         struct lu_target *lut = obd->u.obt.obt_lut;
1249
1250         return scnprintf(buf, PAGE_SIZE, "%u\n", lut->lut_cksum_t10pi_enforce);
1251 }
1252
1253 /**
1254  * Force specific T10PI checksum modes to be enabled
1255  *
1256  * If T10PI *is* supported in hardware, allow only the supported T10PI type
1257  * to be used. If T10PI is *not* supported by the OSD, setting the enforce
1258  * parameter forces all T10PI types to be enabled (even if slower) for
1259  * testing.
1260  *
1261  * The final determination of which algorithm to be used depends whether
1262  * the client supports T10PI or not, and is handled at client connect time.
1263  *
1264  * \param[in] file      proc file
1265  * \param[in] buffer    string which represents mode
1266  *                      1: set T10PI checksums enforced
1267  *                      0: unset T10PI checksums enforced
1268  * \param[in] count     \a buffer length
1269  * \param[in] off       unused for single entry
1270  *
1271  * \retval              \a count on success
1272  * \retval              negative number on error
1273  */
1274 static ssize_t checksum_t10pi_enforce_store(struct kobject *kobj,
1275                                             struct attribute *attr,
1276                                             const char *buffer, size_t count)
1277 {
1278         struct obd_device *obd = container_of(kobj, struct obd_device,
1279                                               obd_kset.kobj);
1280         struct lu_target *lut = obd->u.obt.obt_lut;
1281         bool enforce;
1282         int rc;
1283
1284         rc = kstrtobool(buffer, &enforce);
1285         if (rc)
1286                 return rc;
1287
1288         spin_lock(&lut->lut_flags_lock);
1289         lut->lut_cksum_t10pi_enforce = enforce;
1290         spin_unlock(&lut->lut_flags_lock);
1291         return count;
1292 }
1293 LUSTRE_RW_ATTR(checksum_t10pi_enforce);
1294
1295 LPROC_SEQ_FOPS_RO_TYPE(mdt, hash);
1296 LPROC_SEQ_FOPS_WR_ONLY(mdt, mds_evict_client);
1297 LPROC_SEQ_FOPS_RW_TYPE(mdt, checksum_dump);
1298 LUSTRE_RW_ATTR(job_cleanup_interval);
1299 LPROC_SEQ_FOPS_RW_TYPE(mdt, nid_stats_clear);
1300 LUSTRE_RW_ATTR(hsm_control);
1301
1302 LPROC_SEQ_FOPS_RO_TYPE(mdt, recovery_status);
1303 LUSTRE_RW_ATTR(recovery_time_hard);
1304 LUSTRE_RW_ATTR(recovery_time_soft);
1305 LUSTRE_RW_ATTR(ir_factor);
1306
1307 LUSTRE_RO_ATTR(tot_dirty);
1308 LUSTRE_RO_ATTR(tot_granted);
1309 LUSTRE_RO_ATTR(tot_pending);
1310 LUSTRE_RW_ATTR(grant_compat_disable);
1311 LUSTRE_RO_ATTR(instance);
1312
1313 LUSTRE_RO_ATTR(num_exports);
1314
1315 static struct attribute *mdt_attrs[] = {
1316         &lustre_attr_tot_dirty.attr,
1317         &lustre_attr_tot_granted.attr,
1318         &lustre_attr_tot_pending.attr,
1319         &lustre_attr_grant_compat_disable.attr,
1320         &lustre_attr_instance.attr,
1321         &lustre_attr_recovery_time_hard.attr,
1322         &lustre_attr_recovery_time_soft.attr,
1323         &lustre_attr_ir_factor.attr,
1324         &lustre_attr_num_exports.attr,
1325         &lustre_attr_identity_expire.attr,
1326         &lustre_attr_identity_acquire_expire.attr,
1327         &lustre_attr_identity_upcall.attr,
1328         &lustre_attr_identity_flush.attr,
1329         &lustre_attr_evict_tgt_nids.attr,
1330         &lustre_attr_enable_remote_dir.attr,
1331         &lustre_attr_enable_remote_dir_gid.attr,
1332         &lustre_attr_enable_chprojid_gid.attr,
1333         &lustre_attr_enable_striped_dir.attr,
1334         &lustre_attr_enable_dir_migration.attr,
1335         &lustre_attr_enable_dir_restripe.attr,
1336         &lustre_attr_enable_dir_auto_split.attr,
1337         &lustre_attr_enable_remote_rename.attr,
1338         &lustre_attr_commit_on_sharing.attr,
1339         &lustre_attr_local_recovery.attr,
1340         &lustre_attr_async_commit_count.attr,
1341         &lustre_attr_sync_count.attr,
1342         &lustre_attr_dom_lock.attr,
1343         &lustre_attr_dom_read_open.attr,
1344         &lustre_attr_migrate_hsm_allowed.attr,
1345         &lustre_attr_hsm_control.attr,
1346         &lustre_attr_job_cleanup_interval.attr,
1347         &lustre_attr_readonly.attr,
1348         &lustre_attr_dir_split_count.attr,
1349         &lustre_attr_dir_split_delta.attr,
1350         &lustre_attr_dir_restripe_nsonly.attr,
1351         &lustre_attr_checksum_t10pi_enforce.attr,
1352         NULL,
1353 };
1354
1355 static struct lprocfs_vars lprocfs_mdt_obd_vars[] = {
1356         { .name =       "recovery_status",
1357           .fops =       &mdt_recovery_status_fops               },
1358         { .name =       "identity_info",
1359           .fops =       &mdt_identity_info_fops                 },
1360         { .name =       "site_stats",
1361           .fops =       &mdt_site_stats_fops                    },
1362         { .name =       "evict_client",
1363           .fops =       &mdt_mds_evict_client_fops              },
1364         { .name =       "checksum_dump",
1365           .fops =       &mdt_checksum_dump_fops                 },
1366         { .name =       "hash_stats",
1367           .fops =       &mdt_hash_fops                          },
1368         { .name =       "root_squash",
1369           .fops =       &mdt_root_squash_fops                   },
1370         { .name =       "nosquash_nids",
1371           .fops =       &mdt_nosquash_nids_fops                 },
1372         { NULL }
1373 };
1374
1375 static int
1376 lprocfs_mdt_print_open_files(struct obd_export *exp, void *v)
1377 {
1378         struct seq_file         *seq = v;
1379
1380         if (exp->exp_lock_hash != NULL) {
1381                 struct mdt_export_data  *med = &exp->exp_mdt_data;
1382                 struct mdt_file_data    *mfd;
1383
1384                 spin_lock(&med->med_open_lock);
1385                 list_for_each_entry(mfd, &med->med_open_head, mfd_list) {
1386                         seq_printf(seq, DFID"\n",
1387                                    PFID(mdt_object_fid(mfd->mfd_object)));
1388                 }
1389                 spin_unlock(&med->med_open_lock);
1390         }
1391
1392         return 0;
1393 }
1394
1395 static int lprocfs_mdt_open_files_seq_show(struct seq_file *seq, void *v)
1396 {
1397         struct nid_stat *stats = seq->private;
1398
1399         return obd_nid_export_for_each(stats->nid_obd, stats->nid,
1400                                        lprocfs_mdt_print_open_files, seq);
1401 }
1402
1403 int lprocfs_mdt_open_files_seq_open(struct inode *inode, struct file *file)
1404 {
1405         struct seq_file         *seq;
1406         int                     rc;
1407
1408         rc = single_open(file, &lprocfs_mdt_open_files_seq_show, NULL);
1409         if (rc != 0)
1410                 return rc;
1411
1412         seq = file->private_data;
1413         seq->private = PDE_DATA(inode);
1414
1415         return 0;
1416 }
1417
1418 void mdt_counter_incr(struct ptlrpc_request *req, int opcode, long amount)
1419 {
1420         struct obd_export *exp = req->rq_export;
1421
1422         if (exp->exp_obd && exp->exp_obd->obd_md_stats)
1423                 lprocfs_counter_add(exp->exp_obd->obd_md_stats,
1424                                     opcode + LPROC_MD_LAST_OPC, amount);
1425         if (exp->exp_nid_stats && exp->exp_nid_stats->nid_stats != NULL)
1426                 lprocfs_counter_add(exp->exp_nid_stats->nid_stats, opcode,
1427                                     amount);
1428         if (exp->exp_obd && exp->exp_obd->u.obt.obt_jobstats.ojs_hash &&
1429             (exp_connect_flags(exp) & OBD_CONNECT_JOBSTATS))
1430                 lprocfs_job_stats_log(exp->exp_obd,
1431                                       lustre_msg_get_jobid(req->rq_reqmsg),
1432                                       opcode, amount);
1433 }
1434
1435 static const char * const mdt_stats[] = {
1436         [LPROC_MDT_OPEN]                = "open",
1437         [LPROC_MDT_CLOSE]               = "close",
1438         [LPROC_MDT_MKNOD]               = "mknod",
1439         [LPROC_MDT_LINK]                = "link",
1440         [LPROC_MDT_UNLINK]              = "unlink",
1441         [LPROC_MDT_MKDIR]               = "mkdir",
1442         [LPROC_MDT_RMDIR]               = "rmdir",
1443         [LPROC_MDT_RENAME]              = "rename",
1444         [LPROC_MDT_GETATTR]             = "getattr",
1445         [LPROC_MDT_SETATTR]             = "setattr",
1446         [LPROC_MDT_GETXATTR]            = "getxattr",
1447         [LPROC_MDT_SETXATTR]            = "setxattr",
1448         [LPROC_MDT_STATFS]              = "statfs",
1449         [LPROC_MDT_SYNC]                = "sync",
1450         [LPROC_MDT_SAMEDIR_RENAME]      = "samedir_rename",
1451         [LPROC_MDT_CROSSDIR_RENAME]     = "crossdir_rename",
1452         [LPROC_MDT_IO_READ]             = "read_bytes",
1453         [LPROC_MDT_IO_WRITE]            = "write_bytes",
1454         [LPROC_MDT_IO_PUNCH]            = "punch",
1455         [LPROC_MDT_MIGRATE]             = "migrate",
1456 };
1457
1458 void mdt_stats_counter_init(struct lprocfs_stats *stats, unsigned int offset)
1459 {
1460         int array_size = ARRAY_SIZE(mdt_stats);
1461         int oidx; /* obd_md_stats index */
1462         int midx; /* mdt_stats index */
1463
1464         LASSERT(stats && stats->ls_num >= offset + array_size);
1465
1466         for (midx = 0; midx < array_size; midx++) {
1467                 oidx = midx + offset;
1468                 if (midx == LPROC_MDT_IO_READ || midx == LPROC_MDT_IO_WRITE)
1469                         lprocfs_counter_init(stats, oidx,
1470                                              LPROCFS_TYPE_BYTES_FULL,
1471                                              mdt_stats[midx], "bytes");
1472                 else
1473                         lprocfs_counter_init(stats, oidx,
1474                                              LPROCFS_TYPE_LATENCY,
1475                                              mdt_stats[midx], "usecs");
1476         }
1477 }
1478
1479 int mdt_tunables_init(struct mdt_device *mdt, const char *name)
1480 {
1481         struct obd_device *obd = mdt2obd_dev(mdt);
1482         int rc;
1483
1484         ENTRY;
1485         LASSERT(name != NULL);
1486
1487         obd->obd_ktype.default_attrs = mdt_attrs;
1488         obd->obd_vars = lprocfs_mdt_obd_vars;
1489         rc = lprocfs_obd_setup(obd, true);
1490         if (rc) {
1491                 CERROR("%s: cannot create proc entries: rc = %d\n",
1492                        mdt_obd_name(mdt), rc);
1493                 return rc;
1494         }
1495
1496         rc = tgt_tunables_init(&mdt->mdt_lut);
1497         if (rc) {
1498                 CERROR("%s: failed to init target tunables: rc = %d\n",
1499                        mdt_obd_name(mdt), rc);
1500                 return rc;
1501         }
1502
1503         rc = hsm_cdt_tunables_init(mdt);
1504         if (rc) {
1505                 CERROR("%s: cannot create hsm proc entries: rc = %d\n",
1506                        mdt_obd_name(mdt), rc);
1507                 return rc;
1508         }
1509
1510         obd->obd_proc_exports_entry = proc_mkdir("exports",
1511                                                  obd->obd_proc_entry);
1512         if (obd->obd_proc_exports_entry)
1513                 lprocfs_add_simple(obd->obd_proc_exports_entry, "clear",
1514                                    obd, &mdt_nid_stats_clear_fops);
1515
1516         rc = lprocfs_alloc_md_stats(obd, ARRAY_SIZE(mdt_stats));
1517         if (rc)
1518                 return rc;
1519
1520         /* add additional MDT md_stats after the default ones */
1521         mdt_stats_counter_init(obd->obd_md_stats, LPROC_MD_LAST_OPC);
1522         rc = lprocfs_job_stats_init(obd, ARRAY_SIZE(mdt_stats),
1523                                     mdt_stats_counter_init);
1524
1525         rc = lproc_mdt_attach_rename_seqstat(mdt);
1526         if (rc)
1527                 CERROR("%s: MDT can not create rename stats rc = %d\n",
1528                        mdt_obd_name(mdt), rc);
1529
1530         RETURN(rc);
1531 }
1532
1533 void mdt_tunables_fini(struct mdt_device *mdt)
1534 {
1535         struct obd_device *obd = mdt2obd_dev(mdt);
1536
1537         if (obd->obd_proc_exports_entry != NULL) {
1538                 lprocfs_remove_proc_entry("clear", obd->obd_proc_exports_entry);
1539                 obd->obd_proc_exports_entry = NULL;
1540         }
1541
1542         lprocfs_free_per_client_stats(obd);
1543         /* hsm_cdt_tunables is disabled earlier than this to avoid
1544          * coordinator restart.
1545          */
1546         hsm_cdt_tunables_fini(mdt);
1547         tgt_tunables_fini(&mdt->mdt_lut);
1548         lprocfs_obd_cleanup(obd);
1549         lprocfs_free_md_stats(obd);
1550         lprocfs_free_obd_stats(obd);
1551         lprocfs_job_stats_fini(obd);
1552 }