lustre/obdclass/lprocfs_status_server.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) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2014, 2016, 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/obdclass/lprocfs_status_server.c
  33  */
  34
  35 #define DEBUG_SUBSYSTEM S_CLASS
  36
  37 #include <linux/kobject.h>
  38 #include <linux/sysfs.h>
  39
  40 #include <obd_class.h>
  41 #include <lprocfs_status.h>
  42 #include <lustre_nodemap.h>
  43
  44 #ifdef CONFIG_PROC_FS
  45
  46 int lprocfs_evict_client_open(struct inode *inode, struct file *f)
  47 {
  48         struct obd_device *obd = PDE_DATA(file_inode(f));
  49
  50         atomic_inc(&obd->obd_evict_inprogress);
  51         return 0;
  52 }
  53
  54 int lprocfs_evict_client_release(struct inode *inode, struct file *f)
  55 {
  56         struct obd_device *obd = PDE_DATA(file_inode(f));
  57
  58         atomic_dec(&obd->obd_evict_inprogress);
  59         wake_up(&obd->obd_evict_inprogress_waitq);
  60
  61         return 0;
  62 }
  63
  64 #define BUFLEN (UUID_MAX + 5)
  65
  66 ssize_t
  67 lprocfs_evict_client_seq_write(struct file *file, const char __user *buffer,
  68                                size_t count, loff_t *off)
  69 {
  70         struct seq_file *m = file->private_data;
  71         struct obd_device *obd = m->private;
  72         char *tmpbuf, *kbuf;
  73
  74         OBD_ALLOC(kbuf, BUFLEN);
  75         if (kbuf == NULL)
  76                 return -ENOMEM;
  77
  78         /*
  79          * OBD_ALLOC() will zero kbuf, but we only copy BUFLEN - 1
  80          * bytes into kbuf, to ensure that the string is NUL-terminated.
  81          * UUID_MAX should include a trailing NUL already.
  82          */
  83         if (copy_from_user(kbuf, buffer,
  84                            min_t(unsigned long, BUFLEN - 1, count))) {
  85                 count = -EFAULT;
  86                 goto out;
  87         }
  88         tmpbuf = cfs_firststr(kbuf, min_t(unsigned long, BUFLEN - 1, count));
  89         class_incref(obd, __func__, current);
  90
  91         if (strncmp(tmpbuf, "nid:", 4) == 0)
  92                 obd_export_evict_by_nid(obd, tmpbuf + 4);
  93         else if (strncmp(tmpbuf, "uuid:", 5) == 0)
  94                 obd_export_evict_by_uuid(obd, tmpbuf + 5);
  95         else
  96                 obd_export_evict_by_uuid(obd, tmpbuf);
  97
  98         class_decref(obd, __func__, current);
  99
 100 out:
 101         OBD_FREE(kbuf, BUFLEN);
 102         return count;
 103 }
 104 EXPORT_SYMBOL(lprocfs_evict_client_seq_write);
 105
 106 #undef BUFLEN
 107
 108 int lprocfs_num_exports_seq_show(struct seq_file *m, void *data)
 109 {
 110         struct obd_device *obd = data;
 111
 112         LASSERT(obd != NULL);
 113         seq_printf(m, "%u\n", obd->obd_num_exports);
 114         return 0;
 115 }
 116 EXPORT_SYMBOL(lprocfs_num_exports_seq_show);
 117
 118 static void lprocfs_free_client_stats(struct nid_stat *client_stat)
 119 {
 120         CDEBUG(D_CONFIG, "stat %p - data %p/%p\n", client_stat,
 121                client_stat->nid_proc, client_stat->nid_stats);
 122
 123         LASSERTF(atomic_read(&client_stat->nid_exp_ref_count) == 0,
 124                  "nid %s:count %d\n", libcfs_nid2str(client_stat->nid),
 125                  atomic_read(&client_stat->nid_exp_ref_count));
 126
 127         if (client_stat->nid_proc)
 128                 lprocfs_remove(&client_stat->nid_proc);
 129
 130         if (client_stat->nid_stats)
 131                 lprocfs_free_stats(&client_stat->nid_stats);
 132
 133         if (client_stat->nid_ldlm_stats)
 134                 lprocfs_free_stats(&client_stat->nid_ldlm_stats);
 135
 136         OBD_FREE_PTR(client_stat);
 137         return;
 138 }
 139
 140 void lprocfs_free_per_client_stats(struct obd_device *obd)
 141 {
 142         struct cfs_hash *hash = obd->obd_nid_stats_hash;
 143         struct nid_stat *stat;
 144         ENTRY;
 145
 146         /* we need extra list - because hash_exit called to early */
 147         /* not need locking because all clients is died */
 148         while (!list_empty(&obd->obd_nid_stats)) {
 149                 stat = list_entry(obd->obd_nid_stats.next,
 150                                   struct nid_stat, nid_list);
 151                 list_del_init(&stat->nid_list);
 152                 cfs_hash_del(hash, &stat->nid, &stat->nid_hash);
 153                 lprocfs_free_client_stats(stat);
 154         }
 155         EXIT;
 156 }
 157 EXPORT_SYMBOL(lprocfs_free_per_client_stats);
 158
 159 static int
 160 lprocfs_exp_print_uuid_seq(struct cfs_hash *hs, struct cfs_hash_bd *bd,
 161                            struct hlist_node *hnode, void *cb_data)
 162 {
 163         struct seq_file *m = cb_data;
 164         struct obd_export *exp = cfs_hash_object(hs, hnode);
 165
 166         if (exp->exp_nid_stats != NULL)
 167                 seq_printf(m, "%s\n", obd_uuid2str(&exp->exp_client_uuid));
 168         return 0;
 169 }
 170
 171 static int
 172 lprocfs_exp_print_nodemap_seq(struct cfs_hash *hs, struct cfs_hash_bd *bd,
 173                               struct hlist_node *hnode, void *cb_data)
 174 {
 175         struct seq_file *m = cb_data;
 176         struct obd_export *exp = cfs_hash_object(hs, hnode);
 177         struct lu_nodemap *nodemap = exp->exp_target_data.ted_nodemap;
 178
 179         if (nodemap != NULL)
 180                 seq_printf(m, "%s\n", nodemap->nm_name);
 181         return 0;
 182 }
 183
 184 static int
 185 lprocfs_exp_nodemap_seq_show(struct seq_file *m, void *data)
 186 {
 187         struct nid_stat *stats = m->private;
 188         struct obd_device *obd = stats->nid_obd;
 189
 190         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 191                               lprocfs_exp_print_nodemap_seq, m);
 192         return 0;
 193 }
 194 LPROC_SEQ_FOPS_RO(lprocfs_exp_nodemap);
 195
 196 static int lprocfs_exp_uuid_seq_show(struct seq_file *m, void *data)
 197 {
 198         struct nid_stat *stats = m->private;
 199         struct obd_device *obd = stats->nid_obd;
 200
 201         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 202                                 lprocfs_exp_print_uuid_seq, m);
 203         return 0;
 204 }
 205 LPROC_SEQ_FOPS_RO(lprocfs_exp_uuid);
 206
 207 static int
 208 lprocfs_exp_print_hash_seq(struct cfs_hash *hs, struct cfs_hash_bd *bd,
 209                            struct hlist_node *hnode, void *cb_data)
 210
 211 {
 212         struct seq_file *m = cb_data;
 213         struct obd_export *exp = cfs_hash_object(hs, hnode);
 214
 215         if (exp->exp_lock_hash != NULL) {
 216                 cfs_hash_debug_header(m);
 217                 cfs_hash_debug_str(hs, m);
 218         }
 219         return 0;
 220 }
 221
 222 static int lprocfs_exp_hash_seq_show(struct seq_file *m, void *data)
 223 {
 224         struct nid_stat *stats = m->private;
 225         struct obd_device *obd = stats->nid_obd;
 226
 227         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 228                                 lprocfs_exp_print_hash_seq, m);
 229         return 0;
 230 }
 231 LPROC_SEQ_FOPS_RO(lprocfs_exp_hash);
 232
 233 int lprocfs_exp_print_replydata_seq(struct cfs_hash *hs, struct cfs_hash_bd *bd,
 234                                     struct hlist_node *hnode, void *cb_data)
 235
 236 {
 237         struct obd_export *exp = cfs_hash_object(hs, hnode);
 238         struct seq_file *m = cb_data;
 239         struct tg_export_data *ted = &exp->exp_target_data;
 240
 241         seq_printf(m, "reply_cnt: %d\n"
 242                    "reply_max: %d\n"
 243                    "reply_released_by_xid: %d\n"
 244                    "reply_released_by_tag: %d\n\n",
 245                    ted->ted_reply_cnt,
 246                    ted->ted_reply_max,
 247                    ted->ted_release_xid,
 248                    ted->ted_release_tag);
 249         return 0;
 250 }
 251
 252 int lprocfs_exp_replydata_seq_show(struct seq_file *m, void *data)
 253 {
 254         struct nid_stat *stats = m->private;
 255         struct obd_device *obd = stats->nid_obd;
 256
 257         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 258                                 lprocfs_exp_print_replydata_seq, m);
 259         return 0;
 260 }
 261 LPROC_SEQ_FOPS_RO(lprocfs_exp_replydata);
 262
 263 int lprocfs_nid_stats_clear_seq_show(struct seq_file *m, void *data)
 264 {
 265         seq_puts(m, "Write into this file to clear all nid stats and stale nid entries\n");
 266         return 0;
 267 }
 268 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_show);
 269
 270 static int lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
 271 {
 272         struct nid_stat *stat = obj;
 273         ENTRY;
 274
 275         CDEBUG(D_INFO, "refcnt %d\n", atomic_read(&stat->nid_exp_ref_count));
 276         if (atomic_read(&stat->nid_exp_ref_count) == 1) {
 277                 /* object has only hash references. */
 278                 spin_lock(&stat->nid_obd->obd_nid_lock);
 279                 list_move(&stat->nid_list, data);
 280                 spin_unlock(&stat->nid_obd->obd_nid_lock);
 281                 RETURN(1);
 282         }
 283         /* we has reference to object - only clear data*/
 284         if (stat->nid_stats)
 285                 lprocfs_clear_stats(stat->nid_stats);
 286
 287         RETURN(0);
 288 }
 289
 290 ssize_t
 291 lprocfs_nid_stats_clear_seq_write(struct file *file, const char __user *buffer,
 292                                         size_t count, loff_t *off)
 293 {
 294         struct seq_file *m = file->private_data;
 295         struct obd_device *obd = m->private;
 296         struct nid_stat *client_stat;
 297         struct list_head free_list;
 298
 299         INIT_LIST_HEAD(&free_list);
 300         cfs_hash_cond_del(obd->obd_nid_stats_hash,
 301                           lprocfs_nid_stats_clear_write_cb, &free_list);
 302
 303         while (!list_empty(&free_list)) {
 304                 client_stat = list_entry(free_list.next, struct nid_stat,
 305                                          nid_list);
 306                 list_del_init(&client_stat->nid_list);
 307                 lprocfs_free_client_stats(client_stat);
 308         }
 309         return count;
 310 }
 311 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_write);
 312
 313 int lprocfs_exp_setup(struct obd_export *exp, lnet_nid_t *nid)
 314 {
 315         struct nid_stat *new_stat, *old_stat;
 316         struct obd_device *obd = NULL;
 317         struct proc_dir_entry *entry;
 318         char nidstr[LNET_NIDSTR_SIZE];
 319         int rc = 0;
 320         ENTRY;
 321
 322         if (!exp || !exp->exp_obd || !exp->exp_obd->obd_proc_exports_entry ||
 323             !exp->exp_obd->obd_nid_stats_hash)
 324                 RETURN(-EINVAL);
 325
 326         /* not test against zero because eric say:
 327          * You may only test nid against another nid, or LNET_NID_ANY.
 328          * Anything else is nonsense.*/
 329         if (nid == NULL || *nid == LNET_NID_ANY)
 330                 RETURN(-EALREADY);
 331
 332         libcfs_nid2str_r(*nid, nidstr, sizeof(nidstr));
 333
 334         spin_lock(&exp->exp_lock);
 335         if (exp->exp_nid_stats != NULL) {
 336                 spin_unlock(&exp->exp_lock);
 337                 RETURN(-EALREADY);
 338         }
 339         spin_unlock(&exp->exp_lock);
 340
 341         obd = exp->exp_obd;
 342
 343         CDEBUG(D_CONFIG, "using hash %p\n", obd->obd_nid_stats_hash);
 344
 345         OBD_ALLOC_PTR(new_stat);
 346         if (new_stat == NULL)
 347                 RETURN(-ENOMEM);
 348
 349         new_stat->nid     = *nid;
 350         new_stat->nid_obd = exp->exp_obd;
 351         /* we need set default refcount to 1 to balance obd_disconnect */
 352         atomic_set(&new_stat->nid_exp_ref_count, 1);
 353
 354         old_stat = cfs_hash_findadd_unique(obd->obd_nid_stats_hash,
 355                                            nid, &new_stat->nid_hash);
 356         CDEBUG(D_INFO, "Found stats %p for nid %s - ref %d\n",
 357                old_stat, nidstr, atomic_read(&old_stat->nid_exp_ref_count));
 358
 359         /* Return -EALREADY here so that we know that the /proc
 360          * entry already has been created */
 361         if (old_stat != new_stat) {
 362                 spin_lock(&exp->exp_lock);
 363                 if (exp->exp_nid_stats) {
 364                         LASSERT(exp->exp_nid_stats == old_stat);
 365                         nidstat_putref(exp->exp_nid_stats);
 366                 }
 367                 exp->exp_nid_stats = old_stat;
 368                 spin_unlock(&exp->exp_lock);
 369                 GOTO(destroy_new, rc = -EALREADY);
 370         }
 371         /* not found - create */
 372         new_stat->nid_proc = lprocfs_register(nidstr,
 373                                               obd->obd_proc_exports_entry,
 374                                               NULL, NULL);
 375
 376         if (IS_ERR(new_stat->nid_proc)) {
 377                 rc = PTR_ERR(new_stat->nid_proc);
 378                 new_stat->nid_proc = NULL;
 379                 CERROR("%s: cannot create proc entry for export %s: rc = %d\n",
 380                        obd->obd_name, nidstr, rc);
 381                 GOTO(destroy_new_ns, rc);
 382         }
 383
 384         entry = lprocfs_add_simple(new_stat->nid_proc, "nodemap", new_stat,
 385                                    &lprocfs_exp_nodemap_fops);
 386         if (IS_ERR(entry)) {
 387                 rc = PTR_ERR(entry);
 388                 CWARN("Error adding the nodemap file: rc = %d\n", rc);
 389                 GOTO(destroy_new_ns, rc);
 390         }
 391
 392         entry = lprocfs_add_simple(new_stat->nid_proc, "uuid", new_stat,
 393                                    &lprocfs_exp_uuid_fops);
 394         if (IS_ERR(entry)) {
 395                 rc = PTR_ERR(entry);
 396                 CWARN("Error adding the NID stats file: rc = %d\n", rc);
 397                 GOTO(destroy_new_ns, rc);
 398         }
 399
 400         entry = lprocfs_add_simple(new_stat->nid_proc, "hash", new_stat,
 401                                    &lprocfs_exp_hash_fops);
 402         if (IS_ERR(entry)) {
 403                 rc = PTR_ERR(entry);
 404                 CWARN("Error adding the hash file: rc = %d\n", rc);
 405                 GOTO(destroy_new_ns, rc);
 406         }
 407
 408         entry = lprocfs_add_simple(new_stat->nid_proc, "reply_data", new_stat,
 409                                    &lprocfs_exp_replydata_fops);
 410         if (IS_ERR(entry)) {
 411                 rc = PTR_ERR(entry);
 412                 CWARN("%s: Error adding the reply_data file: rc = %d\n",
 413                       obd->obd_name, rc);
 414                 GOTO(destroy_new_ns, rc);
 415         }
 416
 417         spin_lock(&exp->exp_lock);
 418         exp->exp_nid_stats = new_stat;
 419         spin_unlock(&exp->exp_lock);
 420
 421         /* protect competitive add to list, not need locking on destroy */
 422         spin_lock(&obd->obd_nid_lock);
 423         list_add(&new_stat->nid_list, &obd->obd_nid_stats);
 424         spin_unlock(&obd->obd_nid_lock);
 425
 426         RETURN(0);
 427
 428 destroy_new_ns:
 429         if (new_stat->nid_proc != NULL)
 430                 lprocfs_remove(&new_stat->nid_proc);
 431         cfs_hash_del(obd->obd_nid_stats_hash, nid, &new_stat->nid_hash);
 432
 433 destroy_new:
 434         nidstat_putref(new_stat);
 435         OBD_FREE_PTR(new_stat);
 436         RETURN(rc);
 437 }
 438 EXPORT_SYMBOL(lprocfs_exp_setup);
 439
 440 int lprocfs_exp_cleanup(struct obd_export *exp)
 441 {
 442         struct nid_stat *stat = exp->exp_nid_stats;
 443
 444         if (!stat || !exp->exp_obd)
 445                 RETURN(0);
 446
 447         nidstat_putref(exp->exp_nid_stats);
 448         exp->exp_nid_stats = NULL;
 449
 450         return 0;
 451 }
 452
 453 #define LPROCFS_OBD_OP_INIT(base, stats, op)                    \
 454 do {                                                            \
 455         unsigned int coffset = base + OBD_COUNTER_OFFSET(op);   \
 456         LASSERT(coffset < stats->ls_num);                       \
 457         lprocfs_counter_init(stats, coffset, 0, #op, "reqs");   \
 458 } while (0)
 459
 460 void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
 461 {
 462         LPROCFS_OBD_OP_INIT(num_private_stats, stats, iocontrol);
 463         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_info);
 464         LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_info_async);
 465         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setup);
 466         LPROCFS_OBD_OP_INIT(num_private_stats, stats, precleanup);
 467         LPROCFS_OBD_OP_INIT(num_private_stats, stats, cleanup);
 468         LPROCFS_OBD_OP_INIT(num_private_stats, stats, process_config);
 469         LPROCFS_OBD_OP_INIT(num_private_stats, stats, postrecov);
 470         LPROCFS_OBD_OP_INIT(num_private_stats, stats, add_conn);
 471         LPROCFS_OBD_OP_INIT(num_private_stats, stats, del_conn);
 472         LPROCFS_OBD_OP_INIT(num_private_stats, stats, connect);
 473         LPROCFS_OBD_OP_INIT(num_private_stats, stats, reconnect);
 474         LPROCFS_OBD_OP_INIT(num_private_stats, stats, disconnect);
 475         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_init);
 476         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_fini);
 477         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_alloc);
 478         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs);
 479         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs_async);
 480         LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
 481         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
 482         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
 483         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
 484         LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
 485         LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
 486         LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
 487         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
 488         LPROCFS_OBD_OP_INIT(num_private_stats, stats, import_event);
 489         LPROCFS_OBD_OP_INIT(num_private_stats, stats, notify);
 490         LPROCFS_OBD_OP_INIT(num_private_stats, stats, health_check);
 491         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_uuid);
 492         LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotactl);
 493         LPROCFS_OBD_OP_INIT(num_private_stats, stats, ping);
 494         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_new);
 495         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_rem);
 496         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_add);
 497         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_del);
 498         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getref);
 499         LPROCFS_OBD_OP_INIT(num_private_stats, stats, putref);
 500
 501         CLASSERT(NUM_OBD_STATS == OBD_COUNTER_OFFSET(putref) + 1);
 502 }
 503 EXPORT_SYMBOL(lprocfs_init_ops_stats);
 504
 505 int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
 506 {
 507         struct lprocfs_stats *stats;
 508         unsigned int num_stats;
 509         int rc, i;
 510
 511         LASSERT(obd->obd_stats == NULL);
 512         LASSERT(obd->obd_proc_entry != NULL);
 513         LASSERT(obd->obd_cntr_base == 0);
 514
 515         num_stats = NUM_OBD_STATS + num_private_stats;
 516         stats = lprocfs_alloc_stats(num_stats, 0);
 517         if (stats == NULL)
 518                 return -ENOMEM;
 519
 520         lprocfs_init_ops_stats(num_private_stats, stats);
 521
 522         for (i = num_private_stats; i < num_stats; i++) {
 523                 /* If this LBUGs, it is likely that an obd
 524                  * operation was added to struct obd_ops in
 525                  * <obd.h>, and that the corresponding line item
 526                  * LPROCFS_OBD_OP_INIT(.., .., opname)
 527                  * is missing from the list above. */
 528                 LASSERTF(stats->ls_cnt_header[i].lc_name != NULL,
 529                          "Missing obd_stat initializer obd_op "
 530                          "operation at offset %d.\n", i - num_private_stats);
 531         }
 532         rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
 533         if (rc < 0) {
 534                 lprocfs_free_stats(&stats);
 535         } else {
 536                 obd->obd_stats  = stats;
 537                 obd->obd_cntr_base = num_private_stats;
 538         }
 539         return rc;
 540 }
 541 EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
 542
 543 void lprocfs_free_obd_stats(struct obd_device *obd)
 544 {
 545         if (obd->obd_stats)
 546                 lprocfs_free_stats(&obd->obd_stats);
 547 }
 548 EXPORT_SYMBOL(lprocfs_free_obd_stats);
 549
 550 int lprocfs_hash_seq_show(struct seq_file *m, void *data)
 551 {
 552         struct obd_device *obd = m->private;
 553
 554         if (obd == NULL)
 555                 return 0;
 556
 557         cfs_hash_debug_header(m);
 558         cfs_hash_debug_str(obd->obd_uuid_hash, m);
 559         cfs_hash_debug_str(obd->obd_nid_hash, m);
 560         cfs_hash_debug_str(obd->obd_nid_stats_hash, m);
 561         return 0;
 562 }
 563 EXPORT_SYMBOL(lprocfs_hash_seq_show);
 564
 565 int lprocfs_recovery_status_seq_show(struct seq_file *m, void *data)
 566 {
 567         struct obd_device *obd = m->private;
 568         struct target_distribute_txn_data *tdtd;
 569
 570         LASSERT(obd != NULL);
 571
 572         seq_printf(m, "status: ");
 573         if (obd->obd_max_recoverable_clients == 0) {
 574                 seq_printf(m, "INACTIVE\n");
 575                 goto out;
 576         }
 577
 578         /* sampled unlocked, but really... */
 579         if (obd->obd_recovering == 0) {
 580                 seq_printf(m, "COMPLETE\n");
 581                 seq_printf(m, "recovery_start: %lld\n",
 582                            (s64)obd->obd_recovery_start);
 583                 seq_printf(m, "recovery_duration: %lld\n",
 584                            obd->obd_recovery_end ?
 585                            obd->obd_recovery_end - obd->obd_recovery_start :
 586                            ktime_get_real_seconds() - obd->obd_recovery_start);
 587                 /* Number of clients that have completed recovery */
 588                 seq_printf(m, "completed_clients: %d/%d\n",
 589                            obd->obd_max_recoverable_clients -
 590                            obd->obd_stale_clients,
 591                            obd->obd_max_recoverable_clients);
 592                 seq_printf(m, "replayed_requests: %d\n",
 593                            obd->obd_replayed_requests);
 594                 seq_printf(m, "last_transno: %lld\n",
 595                            obd->obd_next_recovery_transno - 1);
 596                 seq_printf(m, "VBR: %s\n", obd->obd_version_recov ?
 597                            "ENABLED" : "DISABLED");
 598                 seq_printf(m, "IR: %s\n", obd->obd_no_ir ?
 599                            "DISABLED" : "ENABLED");
 600                 goto out;
 601         }
 602
 603         tdtd = obd->u.obt.obt_lut->lut_tdtd;
 604         if (tdtd && tdtd->tdtd_show_update_logs_retrievers) {
 605                 char *buf;
 606                 int size = 0;
 607                 int count = 0;
 608
 609                 buf = tdtd->tdtd_show_update_logs_retrievers(
 610                         tdtd->tdtd_show_retrievers_cbdata,
 611                         &size, &count);
 612                 if (count > 0) {
 613                         seq_printf(m, "WAITING\n");
 614                         seq_printf(m, "non-ready MDTs: %s\n",
 615                                    buf ? buf : "unknown (not enough RAM)");
 616                         seq_printf(m, "recovery_start: %lld\n",
 617                                    (s64)obd->obd_recovery_start);
 618                         seq_printf(m, "time_waited: %lld\n",
 619                                    (s64)(ktime_get_real_seconds() -
 620                                          obd->obd_recovery_start));
 621                 }
 622
 623                 if (buf != NULL)
 624                         OBD_FREE(buf, size);
 625
 626                 if (likely(count > 0))
 627                         goto out;
 628         }
 629
 630         /* recovery won't start until the clients connect */
 631         if (obd->obd_recovery_start == 0) {
 632                 seq_printf(m, "WAITING_FOR_CLIENTS\n");
 633                 goto out;
 634         }
 635
 636         seq_printf(m, "RECOVERING\n");
 637         seq_printf(m, "recovery_start: %lld\n", (s64)obd->obd_recovery_start);
 638         seq_printf(m, "time_remaining: %lld\n",
 639                    ktime_get_real_seconds() >=
 640                    obd->obd_recovery_start +
 641                    obd->obd_recovery_timeout ? 0 :
 642                    (s64)(obd->obd_recovery_start +
 643                          obd->obd_recovery_timeout -
 644                          ktime_get_real_seconds()));
 645         seq_printf(m, "connected_clients: %d/%d\n",
 646                    atomic_read(&obd->obd_connected_clients),
 647                    obd->obd_max_recoverable_clients);
 648         /* Number of clients that have completed recovery */
 649         seq_printf(m, "req_replay_clients: %d\n",
 650                    atomic_read(&obd->obd_req_replay_clients));
 651         seq_printf(m, "lock_repay_clients: %d\n",
 652                    atomic_read(&obd->obd_lock_replay_clients));
 653         seq_printf(m, "completed_clients: %d\n",
 654                    atomic_read(&obd->obd_connected_clients) -
 655                    atomic_read(&obd->obd_lock_replay_clients));
 656         seq_printf(m, "evicted_clients: %d\n", obd->obd_stale_clients);
 657         seq_printf(m, "replayed_requests: %d\n", obd->obd_replayed_requests);
 658         seq_printf(m, "queued_requests: %d\n",
 659                    obd->obd_requests_queued_for_recovery);
 660         seq_printf(m, "next_transno: %lld\n",
 661                    obd->obd_next_recovery_transno);
 662 out:
 663         return 0;
 664 }
 665 EXPORT_SYMBOL(lprocfs_recovery_status_seq_show);
 666
 667 int lprocfs_ir_factor_seq_show(struct seq_file *m, void *data)
 668 {
 669         struct obd_device *obd = m->private;
 670
 671         LASSERT(obd != NULL);
 672         seq_printf(m, "%d\n", obd->obd_recovery_ir_factor);
 673         return 0;
 674 }
 675 EXPORT_SYMBOL(lprocfs_ir_factor_seq_show);
 676
 677 ssize_t
 678 lprocfs_ir_factor_seq_write(struct file *file, const char __user *buffer,
 679                             size_t count, loff_t *off)
 680 {
 681         struct seq_file *m = file->private_data;
 682         struct obd_device *obd = m->private;
 683         int rc;
 684         __s64 val;
 685
 686         LASSERT(obd != NULL);
 687         rc = lprocfs_str_to_s64(buffer, count, &val);
 688         if (rc)
 689                 return rc;
 690
 691         if (val < OBD_IR_FACTOR_MIN || val > OBD_IR_FACTOR_MAX)
 692                 return -EINVAL;
 693
 694         obd->obd_recovery_ir_factor = val;
 695         return count;
 696 }
 697 EXPORT_SYMBOL(lprocfs_ir_factor_seq_write);
 698
 699 int lprocfs_checksum_dump_seq_show(struct seq_file *m, void *data)
 700 {
 701         struct obd_device *obd = m->private;
 702
 703         LASSERT(obd != NULL);
 704         seq_printf(m, "%d\n", obd->obd_checksum_dump);
 705         return 0;
 706 }
 707 EXPORT_SYMBOL(lprocfs_checksum_dump_seq_show);
 708
 709 ssize_t
 710 lprocfs_checksum_dump_seq_write(struct file *file, const char __user *buffer,
 711                             size_t count, loff_t *off)
 712 {
 713         struct seq_file *m = file->private_data;
 714         struct obd_device *obd = m->private;
 715         int rc;
 716         __s64 val;
 717
 718         LASSERT(obd != NULL);
 719         rc = lprocfs_str_to_s64(buffer, count, &val);
 720         if (rc)
 721                 return rc;
 722
 723         obd->obd_checksum_dump = !!val;
 724         return count;
 725 }
 726 EXPORT_SYMBOL(lprocfs_checksum_dump_seq_write);
 727
 728 int lprocfs_recovery_time_soft_seq_show(struct seq_file *m, void *data)
 729 {
 730         struct obd_device *obd = m->private;
 731
 732         LASSERT(obd != NULL);
 733         seq_printf(m, "%llu\n", obd->obd_recovery_timeout);
 734         return 0;
 735 }
 736 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_show);
 737
 738 ssize_t
 739 lprocfs_recovery_time_soft_seq_write(struct file *file,
 740                                      const char __user *buffer,
 741                                      size_t count, loff_t *off)
 742 {
 743         struct seq_file *m = file->private_data;
 744         struct obd_device *obd = m->private;
 745         int rc;
 746         __s64 val;
 747
 748         LASSERT(obd != NULL);
 749         rc = lprocfs_str_to_s64(buffer, count, &val);
 750         if (rc)
 751                 return rc;
 752         if (val < 0 || val > INT_MAX)
 753                 return -ERANGE;
 754
 755         obd->obd_recovery_timeout = val;
 756         return count;
 757 }
 758 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_write);
 759
 760 int lprocfs_recovery_time_hard_seq_show(struct seq_file *m, void *data)
 761 {
 762         struct obd_device *obd = m->private;
 763
 764         LASSERT(obd != NULL);
 765         seq_printf(m, "%lld\n", obd->obd_recovery_time_hard);
 766         return 0;
 767 }
 768 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_show);
 769
 770 ssize_t
 771 lprocfs_recovery_time_hard_seq_write(struct file *file,
 772                                      const char __user *buffer,
 773                                      size_t count, loff_t *off)
 774 {
 775         struct seq_file *m = file->private_data;
 776         struct obd_device *obd = m->private;
 777         int rc;
 778         __s64 val;
 779
 780         LASSERT(obd != NULL);
 781         rc = lprocfs_str_to_s64(buffer, count, &val);
 782         if (rc)
 783                 return rc;
 784         if (val < 0 || val > INT_MAX)
 785                 return -ERANGE;
 786
 787         obd->obd_recovery_time_hard = val;
 788         return count;
 789 }
 790 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_write);
 791
 792 int lprocfs_target_instance_seq_show(struct seq_file *m, void *data)
 793 {
 794         struct obd_device *obd = m->private;
 795         struct obd_device_target *target = &obd->u.obt;
 796
 797         LASSERT(obd != NULL);
 798         LASSERT(target->obt_magic == OBT_MAGIC);
 799         seq_printf(m, "%u\n", obd->u.obt.obt_instance);
 800         return 0;
 801 }
 802 EXPORT_SYMBOL(lprocfs_target_instance_seq_show);
 803
 804 #endif /* CONFIG_PROC_FS*/