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.sun.com/software/products/lustre/docs/GPLv2.pdf
  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, 2015, 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
  38 #include <obd_class.h>
  39 #include <lprocfs_status.h>
  40 #include <lustre/lustre_idl.h>
  41 #include <lustre_nodemap.h>
  42
  43 #ifdef CONFIG_PROC_FS
  44
  45 int lprocfs_evict_client_open(struct inode *inode, struct file *f)
  46 {
  47         struct obd_device *obd = PDE_DATA(file_inode(f));
  48
  49         atomic_inc(&obd->obd_evict_inprogress);
  50         return 0;
  51 }
  52
  53 int lprocfs_evict_client_release(struct inode *inode, struct file *f)
  54 {
  55         struct obd_device *obd = PDE_DATA(file_inode(f));
  56
  57         atomic_dec(&obd->obd_evict_inprogress);
  58         wake_up(&obd->obd_evict_inprogress_waitq);
  59
  60         return 0;
  61 }
  62
  63 #define BUFLEN (UUID_MAX + 5)
  64
  65 ssize_t
  66 lprocfs_evict_client_seq_write(struct file *file, const char __user *buffer,
  67                                size_t count, loff_t *off)
  68 {
  69         struct seq_file *m = file->private_data;
  70         struct obd_device *obd = m->private;
  71         char *tmpbuf, *kbuf;
  72
  73         OBD_ALLOC(kbuf, BUFLEN);
  74         if (kbuf == NULL)
  75                 return -ENOMEM;
  76
  77         /*
  78          * OBD_ALLOC() will zero kbuf, but we only copy BUFLEN - 1
  79          * bytes into kbuf, to ensure that the string is NUL-terminated.
  80          * UUID_MAX should include a trailing NUL already.
  81          */
  82         if (copy_from_user(kbuf, buffer,
  83                            min_t(unsigned long, BUFLEN - 1, count))) {
  84                 count = -EFAULT;
  85                 goto out;
  86         }
  87         tmpbuf = cfs_firststr(kbuf, min_t(unsigned long, BUFLEN - 1, count));
  88         class_incref(obd, __func__, current);
  89
  90         if (strncmp(tmpbuf, "nid:", 4) == 0)
  91                 obd_export_evict_by_nid(obd, tmpbuf + 4);
  92         else if (strncmp(tmpbuf, "uuid:", 5) == 0)
  93                 obd_export_evict_by_uuid(obd, tmpbuf + 5);
  94         else
  95                 obd_export_evict_by_uuid(obd, tmpbuf);
  96
  97         class_decref(obd, __func__, current);
  98
  99 out:
 100         OBD_FREE(kbuf, BUFLEN);
 101         return count;
 102 }
 103 EXPORT_SYMBOL(lprocfs_evict_client_seq_write);
 104
 105 #undef BUFLEN
 106
 107 int lprocfs_num_exports_seq_show(struct seq_file *m, void *data)
 108 {
 109         struct obd_device *obd = data;
 110
 111         LASSERT(obd != NULL);
 112         seq_printf(m, "%u\n", obd->obd_num_exports);
 113         return 0;
 114 }
 115 EXPORT_SYMBOL(lprocfs_num_exports_seq_show);
 116
 117 static void lprocfs_free_client_stats(struct nid_stat *client_stat)
 118 {
 119         CDEBUG(D_CONFIG, "stat %p - data %p/%p\n", client_stat,
 120                client_stat->nid_proc, client_stat->nid_stats);
 121
 122         LASSERTF(atomic_read(&client_stat->nid_exp_ref_count) == 0,
 123                  "nid %s:count %d\n", libcfs_nid2str(client_stat->nid),
 124                  atomic_read(&client_stat->nid_exp_ref_count));
 125
 126         if (client_stat->nid_proc)
 127                 lprocfs_remove(&client_stat->nid_proc);
 128
 129         if (client_stat->nid_stats)
 130                 lprocfs_free_stats(&client_stat->nid_stats);
 131
 132         if (client_stat->nid_ldlm_stats)
 133                 lprocfs_free_stats(&client_stat->nid_ldlm_stats);
 134
 135         OBD_FREE_PTR(client_stat);
 136         return;
 137 }
 138
 139 void lprocfs_free_per_client_stats(struct obd_device *obd)
 140 {
 141         struct cfs_hash *hash = obd->obd_nid_stats_hash;
 142         struct nid_stat *stat;
 143         ENTRY;
 144
 145         /* we need extra list - because hash_exit called to early */
 146         /* not need locking because all clients is died */
 147         while (!list_empty(&obd->obd_nid_stats)) {
 148                 stat = list_entry(obd->obd_nid_stats.next,
 149                                   struct nid_stat, nid_list);
 150                 list_del_init(&stat->nid_list);
 151                 cfs_hash_del(hash, &stat->nid, &stat->nid_hash);
 152                 lprocfs_free_client_stats(stat);
 153         }
 154         EXIT;
 155 }
 156 EXPORT_SYMBOL(lprocfs_free_per_client_stats);
 157
 158 static int
 159 lprocfs_exp_print_uuid_seq(struct cfs_hash *hs, struct cfs_hash_bd *bd,
 160                            struct hlist_node *hnode, void *cb_data)
 161 {
 162         struct seq_file *m = cb_data;
 163         struct obd_export *exp = cfs_hash_object(hs, hnode);
 164
 165         if (exp->exp_nid_stats != NULL)
 166                 seq_printf(m, "%s\n", obd_uuid2str(&exp->exp_client_uuid));
 167         return 0;
 168 }
 169
 170 static int
 171 lprocfs_exp_print_nodemap_seq(struct cfs_hash *hs, struct cfs_hash_bd *bd,
 172                               struct hlist_node *hnode, void *cb_data)
 173 {
 174         struct seq_file *m = cb_data;
 175         struct obd_export *exp = cfs_hash_object(hs, hnode);
 176         struct lu_nodemap *nodemap = exp->exp_target_data.ted_nodemap;
 177
 178         if (nodemap != NULL)
 179                 seq_printf(m, "%s\n", nodemap->nm_name);
 180         return 0;
 181 }
 182
 183 static int
 184 lprocfs_exp_nodemap_seq_show(struct seq_file *m, void *data)
 185 {
 186         struct nid_stat *stats = m->private;
 187         struct obd_device *obd = stats->nid_obd;
 188
 189         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 190                               lprocfs_exp_print_nodemap_seq, m);
 191         return 0;
 192 }
 193 LPROC_SEQ_FOPS_RO(lprocfs_exp_nodemap);
 194
 195 static int lprocfs_exp_uuid_seq_show(struct seq_file *m, void *data)
 196 {
 197         struct nid_stat *stats = m->private;
 198         struct obd_device *obd = stats->nid_obd;
 199
 200         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 201                                 lprocfs_exp_print_uuid_seq, m);
 202         return 0;
 203 }
 204 LPROC_SEQ_FOPS_RO(lprocfs_exp_uuid);
 205
 206 static int
 207 lprocfs_exp_print_hash_seq(struct cfs_hash *hs, struct cfs_hash_bd *bd,
 208                            struct hlist_node *hnode, void *cb_data)
 209
 210 {
 211         struct seq_file *m = cb_data;
 212         struct obd_export *exp = cfs_hash_object(hs, hnode);
 213
 214         if (exp->exp_lock_hash != NULL) {
 215                 cfs_hash_debug_header(m);
 216                 cfs_hash_debug_str(hs, m);
 217         }
 218         return 0;
 219 }
 220
 221 static int lprocfs_exp_hash_seq_show(struct seq_file *m, void *data)
 222 {
 223         struct nid_stat *stats = m->private;
 224         struct obd_device *obd = stats->nid_obd;
 225
 226         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 227                                 lprocfs_exp_print_hash_seq, m);
 228         return 0;
 229 }
 230 LPROC_SEQ_FOPS_RO(lprocfs_exp_hash);
 231
 232 int lprocfs_exp_print_replydata_seq(struct cfs_hash *hs, struct cfs_hash_bd *bd,
 233                                     struct hlist_node *hnode, void *cb_data)
 234
 235 {
 236         struct obd_export *exp = cfs_hash_object(hs, hnode);
 237         struct seq_file *m = cb_data;
 238         struct tg_export_data *ted = &exp->exp_target_data;
 239
 240         seq_printf(m, "reply_cnt: %d\n"
 241                    "reply_max: %d\n"
 242                    "reply_released_by_xid: %d\n"
 243                    "reply_released_by_tag: %d\n\n",
 244                    ted->ted_reply_cnt,
 245                    ted->ted_reply_max,
 246                    ted->ted_release_xid,
 247                    ted->ted_release_tag);
 248         return 0;
 249 }
 250
 251 int lprocfs_exp_replydata_seq_show(struct seq_file *m, void *data)
 252 {
 253         struct nid_stat *stats = m->private;
 254         struct obd_device *obd = stats->nid_obd;
 255
 256         cfs_hash_for_each_key(obd->obd_nid_hash, &stats->nid,
 257                                 lprocfs_exp_print_replydata_seq, m);
 258         return 0;
 259 }
 260 LPROC_SEQ_FOPS_RO(lprocfs_exp_replydata);
 261
 262 int lprocfs_nid_stats_clear_seq_show(struct seq_file *m, void *data)
 263 {
 264         seq_puts(m, "Write into this file to clear all nid stats and stale nid entries\n");
 265         return 0;
 266 }
 267 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_show);
 268
 269 static int lprocfs_nid_stats_clear_write_cb(void *obj, void *data)
 270 {
 271         struct nid_stat *stat = obj;
 272         ENTRY;
 273
 274         CDEBUG(D_INFO, "refcnt %d\n", atomic_read(&stat->nid_exp_ref_count));
 275         if (atomic_read(&stat->nid_exp_ref_count) == 1) {
 276                 /* object has only hash references. */
 277                 spin_lock(&stat->nid_obd->obd_nid_lock);
 278                 list_move(&stat->nid_list, data);
 279                 spin_unlock(&stat->nid_obd->obd_nid_lock);
 280                 RETURN(1);
 281         }
 282         /* we has reference to object - only clear data*/
 283         if (stat->nid_stats)
 284                 lprocfs_clear_stats(stat->nid_stats);
 285
 286         RETURN(0);
 287 }
 288
 289 ssize_t
 290 lprocfs_nid_stats_clear_seq_write(struct file *file, const char __user *buffer,
 291                                         size_t count, loff_t *off)
 292 {
 293         struct seq_file *m = file->private_data;
 294         struct obd_device *obd = m->private;
 295         struct nid_stat *client_stat;
 296         struct list_head free_list;
 297
 298         INIT_LIST_HEAD(&free_list);
 299         cfs_hash_cond_del(obd->obd_nid_stats_hash,
 300                           lprocfs_nid_stats_clear_write_cb, &free_list);
 301
 302         while (!list_empty(&free_list)) {
 303                 client_stat = list_entry(free_list.next, struct nid_stat,
 304                                          nid_list);
 305                 list_del_init(&client_stat->nid_list);
 306                 lprocfs_free_client_stats(client_stat);
 307         }
 308         return count;
 309 }
 310 EXPORT_SYMBOL(lprocfs_nid_stats_clear_seq_write);
 311
 312 int lprocfs_exp_setup(struct obd_export *exp, lnet_nid_t *nid)
 313 {
 314         struct nid_stat *new_stat, *old_stat;
 315         struct obd_device *obd = NULL;
 316         struct proc_dir_entry *entry;
 317         char nidstr[LNET_NIDSTR_SIZE];
 318         int rc = 0;
 319         ENTRY;
 320
 321         if (!exp || !exp->exp_obd || !exp->exp_obd->obd_proc_exports_entry ||
 322             !exp->exp_obd->obd_nid_stats_hash)
 323                 RETURN(-EINVAL);
 324
 325         /* not test against zero because eric say:
 326          * You may only test nid against another nid, or LNET_NID_ANY.
 327          * Anything else is nonsense.*/
 328         if (nid == NULL || *nid == LNET_NID_ANY)
 329                 RETURN(-EALREADY);
 330
 331         libcfs_nid2str_r(*nid, nidstr, sizeof(nidstr));
 332
 333         spin_lock(&exp->exp_lock);
 334         if (exp->exp_nid_stats != NULL) {
 335                 spin_unlock(&exp->exp_lock);
 336                 RETURN(-EALREADY);
 337         }
 338         spin_unlock(&exp->exp_lock);
 339
 340         obd = exp->exp_obd;
 341
 342         CDEBUG(D_CONFIG, "using hash %p\n", obd->obd_nid_stats_hash);
 343
 344         OBD_ALLOC_PTR(new_stat);
 345         if (new_stat == NULL)
 346                 RETURN(-ENOMEM);
 347
 348         new_stat->nid     = *nid;
 349         new_stat->nid_obd = exp->exp_obd;
 350         /* we need set default refcount to 1 to balance obd_disconnect */
 351         atomic_set(&new_stat->nid_exp_ref_count, 1);
 352
 353         old_stat = cfs_hash_findadd_unique(obd->obd_nid_stats_hash,
 354                                            nid, &new_stat->nid_hash);
 355         CDEBUG(D_INFO, "Found stats %p for nid %s - ref %d\n",
 356                old_stat, nidstr, atomic_read(&old_stat->nid_exp_ref_count));
 357
 358         /* Return -EALREADY here so that we know that the /proc
 359          * entry already has been created */
 360         if (old_stat != new_stat) {
 361                 spin_lock(&exp->exp_lock);
 362                 if (exp->exp_nid_stats) {
 363                         LASSERT(exp->exp_nid_stats == old_stat);
 364                         nidstat_putref(exp->exp_nid_stats);
 365                 }
 366                 exp->exp_nid_stats = old_stat;
 367                 spin_unlock(&exp->exp_lock);
 368                 GOTO(destroy_new, rc = -EALREADY);
 369         }
 370         /* not found - create */
 371         new_stat->nid_proc = lprocfs_register(nidstr,
 372                                               obd->obd_proc_exports_entry,
 373                                               NULL, NULL);
 374
 375         if (IS_ERR(new_stat->nid_proc)) {
 376                 rc = PTR_ERR(new_stat->nid_proc);
 377                 new_stat->nid_proc = NULL;
 378                 CERROR("%s: cannot create proc entry for export %s: rc = %d\n",
 379                        obd->obd_name, nidstr, rc);
 380                 GOTO(destroy_new_ns, rc);
 381         }
 382
 383         entry = lprocfs_add_simple(new_stat->nid_proc, "nodemap", new_stat,
 384                                    &lprocfs_exp_nodemap_fops);
 385         if (IS_ERR(entry)) {
 386                 rc = PTR_ERR(entry);
 387                 CWARN("Error adding the nodemap file: rc = %d\n", rc);
 388                 GOTO(destroy_new_ns, rc);
 389         }
 390
 391         entry = lprocfs_add_simple(new_stat->nid_proc, "uuid", new_stat,
 392                                    &lprocfs_exp_uuid_fops);
 393         if (IS_ERR(entry)) {
 394                 rc = PTR_ERR(entry);
 395                 CWARN("Error adding the NID stats file: rc = %d\n", rc);
 396                 GOTO(destroy_new_ns, rc);
 397         }
 398
 399         entry = lprocfs_add_simple(new_stat->nid_proc, "hash", new_stat,
 400                                    &lprocfs_exp_hash_fops);
 401         if (IS_ERR(entry)) {
 402                 rc = PTR_ERR(entry);
 403                 CWARN("Error adding the hash file: rc = %d\n", rc);
 404                 GOTO(destroy_new_ns, rc);
 405         }
 406
 407         entry = lprocfs_add_simple(new_stat->nid_proc, "reply_data", new_stat,
 408                                    &lprocfs_exp_replydata_fops);
 409         if (IS_ERR(entry)) {
 410                 rc = PTR_ERR(entry);
 411                 CWARN("%s: Error adding the reply_data file: rc = %d\n",
 412                       obd->obd_name, rc);
 413                 GOTO(destroy_new_ns, rc);
 414         }
 415
 416         spin_lock(&exp->exp_lock);
 417         exp->exp_nid_stats = new_stat;
 418         spin_unlock(&exp->exp_lock);
 419
 420         /* protect competitive add to list, not need locking on destroy */
 421         spin_lock(&obd->obd_nid_lock);
 422         list_add(&new_stat->nid_list, &obd->obd_nid_stats);
 423         spin_unlock(&obd->obd_nid_lock);
 424
 425         RETURN(0);
 426
 427 destroy_new_ns:
 428         if (new_stat->nid_proc != NULL)
 429                 lprocfs_remove(&new_stat->nid_proc);
 430         cfs_hash_del(obd->obd_nid_stats_hash, nid, &new_stat->nid_hash);
 431
 432 destroy_new:
 433         nidstat_putref(new_stat);
 434         OBD_FREE_PTR(new_stat);
 435         RETURN(rc);
 436 }
 437 EXPORT_SYMBOL(lprocfs_exp_setup);
 438
 439 int lprocfs_exp_cleanup(struct obd_export *exp)
 440 {
 441         struct nid_stat *stat = exp->exp_nid_stats;
 442
 443         if (!stat || !exp->exp_obd)
 444                 RETURN(0);
 445
 446         nidstat_putref(exp->exp_nid_stats);
 447         exp->exp_nid_stats = NULL;
 448
 449         return 0;
 450 }
 451
 452 #define LPROCFS_OBD_OP_INIT(base, stats, op)                    \
 453 do {                                                            \
 454         unsigned int coffset = base + OBD_COUNTER_OFFSET(op);   \
 455         LASSERT(coffset < stats->ls_num);                       \
 456         lprocfs_counter_init(stats, coffset, 0, #op, "reqs");   \
 457 } while (0)
 458
 459 void lprocfs_init_ops_stats(int num_private_stats, struct lprocfs_stats *stats)
 460 {
 461         LPROCFS_OBD_OP_INIT(num_private_stats, stats, iocontrol);
 462         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_info);
 463         LPROCFS_OBD_OP_INIT(num_private_stats, stats, set_info_async);
 464         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setup);
 465         LPROCFS_OBD_OP_INIT(num_private_stats, stats, precleanup);
 466         LPROCFS_OBD_OP_INIT(num_private_stats, stats, cleanup);
 467         LPROCFS_OBD_OP_INIT(num_private_stats, stats, process_config);
 468         LPROCFS_OBD_OP_INIT(num_private_stats, stats, postrecov);
 469         LPROCFS_OBD_OP_INIT(num_private_stats, stats, add_conn);
 470         LPROCFS_OBD_OP_INIT(num_private_stats, stats, del_conn);
 471         LPROCFS_OBD_OP_INIT(num_private_stats, stats, connect);
 472         LPROCFS_OBD_OP_INIT(num_private_stats, stats, reconnect);
 473         LPROCFS_OBD_OP_INIT(num_private_stats, stats, disconnect);
 474         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_init);
 475         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_fini);
 476         LPROCFS_OBD_OP_INIT(num_private_stats, stats, fid_alloc);
 477         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs);
 478         LPROCFS_OBD_OP_INIT(num_private_stats, stats, statfs_async);
 479         LPROCFS_OBD_OP_INIT(num_private_stats, stats, create);
 480         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy);
 481         LPROCFS_OBD_OP_INIT(num_private_stats, stats, setattr);
 482         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getattr);
 483         LPROCFS_OBD_OP_INIT(num_private_stats, stats, preprw);
 484         LPROCFS_OBD_OP_INIT(num_private_stats, stats, commitrw);
 485         LPROCFS_OBD_OP_INIT(num_private_stats, stats, init_export);
 486         LPROCFS_OBD_OP_INIT(num_private_stats, stats, destroy_export);
 487         LPROCFS_OBD_OP_INIT(num_private_stats, stats, import_event);
 488         LPROCFS_OBD_OP_INIT(num_private_stats, stats, notify);
 489         LPROCFS_OBD_OP_INIT(num_private_stats, stats, health_check);
 490         LPROCFS_OBD_OP_INIT(num_private_stats, stats, get_uuid);
 491         LPROCFS_OBD_OP_INIT(num_private_stats, stats, quotactl);
 492         LPROCFS_OBD_OP_INIT(num_private_stats, stats, ping);
 493         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_new);
 494         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_rem);
 495         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_add);
 496         LPROCFS_OBD_OP_INIT(num_private_stats, stats, pool_del);
 497         LPROCFS_OBD_OP_INIT(num_private_stats, stats, getref);
 498         LPROCFS_OBD_OP_INIT(num_private_stats, stats, putref);
 499
 500         CLASSERT(NUM_OBD_STATS == OBD_COUNTER_OFFSET(putref) + 1);
 501 }
 502 EXPORT_SYMBOL(lprocfs_init_ops_stats);
 503
 504 int lprocfs_alloc_obd_stats(struct obd_device *obd, unsigned num_private_stats)
 505 {
 506         struct lprocfs_stats *stats;
 507         unsigned int num_stats;
 508         int rc, i;
 509
 510         LASSERT(obd->obd_stats == NULL);
 511         LASSERT(obd->obd_proc_entry != NULL);
 512         LASSERT(obd->obd_cntr_base == 0);
 513
 514         num_stats = NUM_OBD_STATS + num_private_stats;
 515         stats = lprocfs_alloc_stats(num_stats, 0);
 516         if (stats == NULL)
 517                 return -ENOMEM;
 518
 519         lprocfs_init_ops_stats(num_private_stats, stats);
 520
 521         for (i = num_private_stats; i < num_stats; i++) {
 522                 /* If this LBUGs, it is likely that an obd
 523                  * operation was added to struct obd_ops in
 524                  * <obd.h>, and that the corresponding line item
 525                  * LPROCFS_OBD_OP_INIT(.., .., opname)
 526                  * is missing from the list above. */
 527                 LASSERTF(stats->ls_cnt_header[i].lc_name != NULL,
 528                          "Missing obd_stat initializer obd_op "
 529                          "operation at offset %d.\n", i - num_private_stats);
 530         }
 531         rc = lprocfs_register_stats(obd->obd_proc_entry, "stats", stats);
 532         if (rc < 0) {
 533                 lprocfs_free_stats(&stats);
 534         } else {
 535                 obd->obd_stats  = stats;
 536                 obd->obd_cntr_base = num_private_stats;
 537         }
 538         return rc;
 539 }
 540 EXPORT_SYMBOL(lprocfs_alloc_obd_stats);
 541
 542 void lprocfs_free_obd_stats(struct obd_device *obd)
 543 {
 544         if (obd->obd_stats)
 545                 lprocfs_free_stats(&obd->obd_stats);
 546 }
 547 EXPORT_SYMBOL(lprocfs_free_obd_stats);
 548
 549 int lprocfs_hash_seq_show(struct seq_file *m, void *data)
 550 {
 551         struct obd_device *obd = m->private;
 552
 553         if (obd == NULL)
 554                 return 0;
 555
 556         cfs_hash_debug_header(m);
 557         cfs_hash_debug_str(obd->obd_uuid_hash, m);
 558         cfs_hash_debug_str(obd->obd_nid_hash, m);
 559         cfs_hash_debug_str(obd->obd_nid_stats_hash, m);
 560         return 0;
 561 }
 562 EXPORT_SYMBOL(lprocfs_hash_seq_show);
 563
 564 int lprocfs_recovery_status_seq_show(struct seq_file *m, void *data)
 565 {
 566         struct obd_device *obd = m->private;
 567
 568         LASSERT(obd != NULL);
 569
 570         seq_printf(m, "status: ");
 571         if (obd->obd_max_recoverable_clients == 0) {
 572                 seq_printf(m, "INACTIVE\n");
 573                 goto out;
 574         }
 575
 576         /* sampled unlocked, but really... */
 577         if (obd->obd_recovering == 0) {
 578                 seq_printf(m, "COMPLETE\n");
 579                 seq_printf(m, "recovery_start: %lu\n", obd->obd_recovery_start);
 580                 seq_printf(m, "recovery_duration: %lu\n",
 581                            obd->obd_recovery_end ?
 582                            obd->obd_recovery_end - obd->obd_recovery_start :
 583                            cfs_time_current_sec() - obd->obd_recovery_start);
 584                 /* Number of clients that have completed recovery */
 585                 seq_printf(m, "completed_clients: %d/%d\n",
 586                            obd->obd_max_recoverable_clients -
 587                            obd->obd_stale_clients,
 588                            obd->obd_max_recoverable_clients);
 589                 seq_printf(m, "replayed_requests: %d\n",
 590                            obd->obd_replayed_requests);
 591                 seq_printf(m, "last_transno: %lld\n",
 592                            obd->obd_next_recovery_transno - 1);
 593                 seq_printf(m, "VBR: %s\n", obd->obd_version_recov ?
 594                            "ENABLED" : "DISABLED");
 595                 seq_printf(m, "IR: %s\n", obd->obd_no_ir ?
 596                            "DISABLED" : "ENABLED");
 597                 goto out;
 598         }
 599
 600         seq_printf(m, "RECOVERING\n");
 601         seq_printf(m, "recovery_start: %lu\n", obd->obd_recovery_start);
 602         seq_printf(m, "time_remaining: %lu\n",
 603                    cfs_time_current_sec() >=
 604                    obd->obd_recovery_start +
 605                    obd->obd_recovery_timeout ? 0 :
 606                    obd->obd_recovery_start +
 607                    obd->obd_recovery_timeout -
 608                    cfs_time_current_sec());
 609         seq_printf(m, "connected_clients: %d/%d\n",
 610                    atomic_read(&obd->obd_connected_clients),
 611                    obd->obd_max_recoverable_clients);
 612         /* Number of clients that have completed recovery */
 613         seq_printf(m, "req_replay_clients: %d\n",
 614                    atomic_read(&obd->obd_req_replay_clients));
 615         seq_printf(m, "lock_repay_clients: %d\n",
 616                    atomic_read(&obd->obd_lock_replay_clients));
 617         seq_printf(m, "completed_clients: %d\n",
 618                    atomic_read(&obd->obd_connected_clients) -
 619                    atomic_read(&obd->obd_lock_replay_clients));
 620         seq_printf(m, "evicted_clients: %d\n", obd->obd_stale_clients);
 621         seq_printf(m, "replayed_requests: %d\n", obd->obd_replayed_requests);
 622         seq_printf(m, "queued_requests: %d\n",
 623                    obd->obd_requests_queued_for_recovery);
 624         seq_printf(m, "next_transno: %lld\n",
 625                    obd->obd_next_recovery_transno);
 626 out:
 627         return 0;
 628 }
 629 EXPORT_SYMBOL(lprocfs_recovery_status_seq_show);
 630
 631 int lprocfs_ir_factor_seq_show(struct seq_file *m, void *data)
 632 {
 633         struct obd_device *obd = m->private;
 634
 635         LASSERT(obd != NULL);
 636         seq_printf(m, "%d\n", obd->obd_recovery_ir_factor);
 637         return 0;
 638 }
 639 EXPORT_SYMBOL(lprocfs_ir_factor_seq_show);
 640
 641 ssize_t
 642 lprocfs_ir_factor_seq_write(struct file *file, const char __user *buffer,
 643                             size_t count, loff_t *off)
 644 {
 645         struct seq_file *m = file->private_data;
 646         struct obd_device *obd = m->private;
 647         int rc;
 648         __s64 val;
 649
 650         LASSERT(obd != NULL);
 651         rc = lprocfs_str_to_s64(buffer, count, &val);
 652         if (rc)
 653                 return rc;
 654
 655         if (val < OBD_IR_FACTOR_MIN || val > OBD_IR_FACTOR_MAX)
 656                 return -EINVAL;
 657
 658         obd->obd_recovery_ir_factor = val;
 659         return count;
 660 }
 661 EXPORT_SYMBOL(lprocfs_ir_factor_seq_write);
 662
 663 int lprocfs_recovery_time_soft_seq_show(struct seq_file *m, void *data)
 664 {
 665         struct obd_device *obd = m->private;
 666
 667         LASSERT(obd != NULL);
 668         seq_printf(m, "%d\n", obd->obd_recovery_timeout);
 669         return 0;
 670 }
 671 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_show);
 672
 673 ssize_t
 674 lprocfs_recovery_time_soft_seq_write(struct file *file,
 675                                      const char __user *buffer,
 676                                      size_t count, loff_t *off)
 677 {
 678         struct seq_file *m = file->private_data;
 679         struct obd_device *obd = m->private;
 680         int rc;
 681         __s64 val;
 682
 683         LASSERT(obd != NULL);
 684         rc = lprocfs_str_to_s64(buffer, count, &val);
 685         if (rc)
 686                 return rc;
 687         if (val < 0 || val > INT_MAX)
 688                 return -ERANGE;
 689
 690         obd->obd_recovery_timeout = val;
 691         return count;
 692 }
 693 EXPORT_SYMBOL(lprocfs_recovery_time_soft_seq_write);
 694
 695 int lprocfs_recovery_time_hard_seq_show(struct seq_file *m, void *data)
 696 {
 697         struct obd_device *obd = m->private;
 698
 699         LASSERT(obd != NULL);
 700         seq_printf(m, "%u\n", obd->obd_recovery_time_hard);
 701         return 0;
 702 }
 703 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_show);
 704
 705 ssize_t
 706 lprocfs_recovery_time_hard_seq_write(struct file *file,
 707                                      const char __user *buffer,
 708                                      size_t count, loff_t *off)
 709 {
 710         struct seq_file *m = file->private_data;
 711         struct obd_device *obd = m->private;
 712         int rc;
 713         __s64 val;
 714
 715         LASSERT(obd != NULL);
 716         rc = lprocfs_str_to_s64(buffer, count, &val);
 717         if (rc)
 718                 return rc;
 719         if (val < 0 || val > INT_MAX)
 720                 return -ERANGE;
 721
 722         obd->obd_recovery_time_hard = val;
 723         return count;
 724 }
 725 EXPORT_SYMBOL(lprocfs_recovery_time_hard_seq_write);
 726
 727 int lprocfs_target_instance_seq_show(struct seq_file *m, void *data)
 728 {
 729         struct obd_device *obd = m->private;
 730         struct obd_device_target *target = &obd->u.obt;
 731
 732         LASSERT(obd != NULL);
 733         LASSERT(target->obt_magic == OBT_MAGIC);
 734         seq_printf(m, "%u\n", obd->u.obt.obt_instance);
 735         return 0;
 736 }
 737 EXPORT_SYMBOL(lprocfs_target_instance_seq_show);
 738
 739 #endif /* CONFIG_PROC_FS*/