lustre/lod/lproc_lod.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  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright  2008 Sun Microsystems, Inc. All rights reserved
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2012, 2013, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36 #define DEBUG_SUBSYSTEM S_CLASS
  37
  38 #include <lprocfs_status.h>
  39 #include <obd_class.h>
  40 #include <linux/seq_file.h>
  41 #include "lod_internal.h"
  42 #include <lustre_param.h>
  43
  44 #ifdef LPROCFS
  45 static int lod_stripesize_seq_show(struct seq_file *m, void *v)
  46 {
  47         struct obd_device *dev = m->private;
  48         struct lod_device *lod;
  49
  50         LASSERT(dev != NULL);
  51         lod  = lu2lod_dev(dev->obd_lu_dev);
  52         return seq_printf(m, LPU64"\n",
  53                         lod->lod_desc.ld_default_stripe_size);
  54 }
  55
  56 static ssize_t
  57 lod_stripesize_seq_write(struct file *file, const char *buffer,
  58                          size_t count, loff_t *off)
  59 {
  60         struct seq_file   *m = file->private_data;
  61         struct obd_device *dev = m->private;
  62         struct lod_device *lod;
  63         __u64 val;
  64         int rc;
  65
  66         LASSERT(dev != NULL);
  67         lod  = lu2lod_dev(dev->obd_lu_dev);
  68         rc = lprocfs_write_u64_helper(buffer, count, &val);
  69         if (rc)
  70                 return rc;
  71
  72         lod_fix_desc_stripe_size(&val);
  73         lod->lod_desc.ld_default_stripe_size = val;
  74         return count;
  75 }
  76 LPROC_SEQ_FOPS(lod_stripesize);
  77
  78 static int lod_stripeoffset_seq_show(struct seq_file *m, void *v)
  79 {
  80         struct obd_device *dev = m->private;
  81         struct lod_device *lod;
  82
  83         LASSERT(dev != NULL);
  84         lod  = lu2lod_dev(dev->obd_lu_dev);
  85         return seq_printf(m, LPU64"\n",
  86                         lod->lod_desc.ld_default_stripe_offset);
  87 }
  88
  89 static ssize_t
  90 lod_stripeoffset_seq_write(struct file *file, const char *buffer,
  91                            size_t count, loff_t *off)
  92 {
  93         struct seq_file   *m = file->private_data;
  94         struct obd_device *dev = m->private;
  95         struct lod_device *lod;
  96         __u64 val;
  97         int rc;
  98
  99         LASSERT(dev != NULL);
 100         lod  = lu2lod_dev(dev->obd_lu_dev);
 101         rc = lprocfs_write_u64_helper(buffer, count, &val);
 102         if (rc)
 103                 return rc;
 104
 105         lod->lod_desc.ld_default_stripe_offset = val;
 106         return count;
 107 }
 108 LPROC_SEQ_FOPS(lod_stripeoffset);
 109
 110 static int lod_stripetype_seq_show(struct seq_file *m, void *v)
 111 {
 112         struct obd_device *dev = m->private;
 113         struct lod_device *lod;
 114
 115         LASSERT(dev != NULL);
 116         lod  = lu2lod_dev(dev->obd_lu_dev);
 117         return seq_printf(m, "%u\n", lod->lod_desc.ld_pattern);
 118 }
 119
 120 static ssize_t
 121 lod_stripetype_seq_write(struct file *file, const char *buffer,
 122                          size_t count, loff_t *off)
 123 {
 124         struct seq_file   *m = file->private_data;
 125         struct obd_device *dev = m->private;
 126         struct lod_device *lod;
 127         int val, rc;
 128
 129         LASSERT(dev != NULL);
 130         lod  = lu2lod_dev(dev->obd_lu_dev);
 131         rc = lprocfs_write_helper(buffer, count, &val);
 132         if (rc)
 133                 return rc;
 134
 135         lod_fix_desc_pattern(&val);
 136         lod->lod_desc.ld_pattern = val;
 137         return count;
 138 }
 139 LPROC_SEQ_FOPS(lod_stripetype);
 140
 141 static int lod_stripecount_seq_show(struct seq_file *m, void *v)
 142 {
 143         struct obd_device *dev = m->private;
 144         struct lod_device *lod;
 145
 146         LASSERT(dev != NULL);
 147         lod  = lu2lod_dev(dev->obd_lu_dev);
 148         return seq_printf(m, "%d\n",
 149                         (__s16)(lod->lod_desc.ld_default_stripe_count + 1) - 1);
 150 }
 151
 152 static ssize_t
 153 lod_stripecount_seq_write(struct file *file, const char *buffer,
 154                           size_t count, loff_t *off)
 155 {
 156         struct seq_file   *m = file->private_data;
 157         struct obd_device *dev = m->private;
 158         struct lod_device *lod;
 159         int val, rc;
 160
 161         LASSERT(dev != NULL);
 162         lod  = lu2lod_dev(dev->obd_lu_dev);
 163         rc = lprocfs_write_helper(buffer, count, &val);
 164         if (rc)
 165                 return rc;
 166
 167         lod_fix_desc_stripe_count(&val);
 168         lod->lod_desc.ld_default_stripe_count = val;
 169         return count;
 170 }
 171 LPROC_SEQ_FOPS(lod_stripecount);
 172
 173 static int lod_numobd_seq_show(struct seq_file *m, void *v)
 174 {
 175         struct obd_device *dev = m->private;
 176         struct lod_device *lod;
 177
 178         LASSERT(dev != NULL);
 179         lod  = lu2lod_dev(dev->obd_lu_dev);
 180         return seq_printf(m, "%u\n", lod->lod_desc.ld_tgt_count);
 181 }
 182 LPROC_SEQ_FOPS_RO(lod_numobd);
 183
 184 static int lod_activeobd_seq_show(struct seq_file *m, void *v)
 185 {
 186         struct obd_device *dev = m->private;
 187         struct lod_device *lod;
 188
 189         LASSERT(dev != NULL);
 190         lod  = lu2lod_dev(dev->obd_lu_dev);
 191         return seq_printf(m, "%u\n", lod->lod_desc.ld_active_tgt_count);
 192 }
 193 LPROC_SEQ_FOPS_RO(lod_activeobd);
 194
 195 static int lod_desc_uuid_seq_show(struct seq_file *m, void *v)
 196 {
 197         struct obd_device *dev = m->private;
 198         struct lod_device *lod;
 199
 200         LASSERT(dev != NULL);
 201         lod  = lu2lod_dev(dev->obd_lu_dev);
 202         return seq_printf(m, "%s\n", lod->lod_desc.ld_uuid.uuid);
 203 }
 204 LPROC_SEQ_FOPS_RO(lod_desc_uuid);
 205
 206 /* free priority (0-255): how badly user wants to choose empty osts */
 207 static int lod_qos_priofree_seq_show(struct seq_file *m, void *v)
 208 {
 209         struct obd_device *dev = m->private;
 210         struct lod_device *lod = lu2lod_dev(dev->obd_lu_dev);
 211
 212         LASSERT(lod != NULL);
 213         return seq_printf(m, "%d%%\n",
 214                         (lod->lod_qos.lq_prio_free * 100 + 255) >> 8);
 215 }
 216
 217 static ssize_t
 218 lod_qos_priofree_seq_write(struct file *file, const char *buffer,
 219                            size_t count, loff_t *off)
 220 {
 221         struct seq_file   *m = file->private_data;
 222         struct obd_device *dev = m->private;
 223         struct lod_device *lod;
 224         int val, rc;
 225
 226         LASSERT(dev != NULL);
 227         lod = lu2lod_dev(dev->obd_lu_dev);
 228
 229         rc = lprocfs_write_helper(buffer, count, &val);
 230         if (rc)
 231                 return rc;
 232
 233         if (val > 100)
 234                 return -EINVAL;
 235         lod->lod_qos.lq_prio_free = (val << 8) / 100;
 236         lod->lod_qos.lq_dirty = 1;
 237         lod->lod_qos.lq_reset = 1;
 238         return count;
 239 }
 240 LPROC_SEQ_FOPS(lod_qos_priofree);
 241
 242 static int lod_qos_thresholdrr_seq_show(struct seq_file *m, void *v)
 243 {
 244         struct obd_device *dev = m->private;
 245         struct lod_device *lod;
 246
 247         LASSERT(dev != NULL);
 248         lod = lu2lod_dev(dev->obd_lu_dev);
 249         return seq_printf(m, "%d%%\n",
 250                         (lod->lod_qos.lq_threshold_rr * 100 + 255) >> 8);
 251 }
 252
 253 static ssize_t
 254 lod_qos_thresholdrr_seq_write(struct file *file, const char *buffer,
 255                               size_t count, loff_t *off)
 256 {
 257         struct seq_file   *m = file->private_data;
 258         struct obd_device *dev = m->private;
 259         struct lod_device *lod;
 260         int val, rc;
 261
 262         LASSERT(dev != NULL);
 263         lod = lu2lod_dev(dev->obd_lu_dev);
 264
 265         rc = lprocfs_write_helper(buffer, count, &val);
 266         if (rc)
 267                 return rc;
 268
 269         if (val > 100 || val < 0)
 270                 return -EINVAL;
 271
 272         lod->lod_qos.lq_threshold_rr = (val << 8) / 100;
 273         lod->lod_qos.lq_dirty = 1;
 274         return count;
 275 }
 276 LPROC_SEQ_FOPS(lod_qos_thresholdrr);
 277
 278 static int lod_qos_maxage_seq_show(struct seq_file *m, void *v)
 279 {
 280         struct obd_device *dev = m->private;
 281         struct lod_device *lod;
 282
 283         LASSERT(dev != NULL);
 284         lod = lu2lod_dev(dev->obd_lu_dev);
 285         return seq_printf(m, "%u Sec\n", lod->lod_desc.ld_qos_maxage);
 286 }
 287
 288 static ssize_t
 289 lod_qos_maxage_seq_write(struct file *file, const char *buffer,
 290                          size_t count, loff_t *off)
 291 {
 292         struct seq_file         *m = file->private_data;
 293         struct obd_device       *dev = m->private;
 294         struct lustre_cfg_bufs   bufs;
 295         struct lod_device       *lod;
 296         struct lu_device        *next;
 297         struct lustre_cfg       *lcfg;
 298         char                     str[32];
 299         int                      val, rc, i;
 300
 301         LASSERT(dev != NULL);
 302         lod = lu2lod_dev(dev->obd_lu_dev);
 303
 304         rc = lprocfs_write_helper(buffer, count, &val);
 305         if (rc)
 306                 return rc;
 307
 308         if (val <= 0)
 309                 return -EINVAL;
 310         lod->lod_desc.ld_qos_maxage = val;
 311
 312         /*
 313          * propogate the value down to OSPs
 314          */
 315         lustre_cfg_bufs_reset(&bufs, NULL);
 316         sprintf(str, "%smaxage=%d", PARAM_OSP, val);
 317         lustre_cfg_bufs_set_string(&bufs, 1, str);
 318         lcfg = lustre_cfg_new(LCFG_PARAM, &bufs);
 319         lod_getref(&lod->lod_ost_descs);
 320         lod_foreach_ost(lod, i) {
 321                 next = &OST_TGT(lod,i)->ltd_ost->dd_lu_dev;
 322                 rc = next->ld_ops->ldo_process_config(NULL, next, lcfg);
 323                 if (rc)
 324                         CERROR("can't set maxage on #%d: %d\n", i, rc);
 325         }
 326         lod_putref(lod, &lod->lod_ost_descs);
 327         lustre_cfg_free(lcfg);
 328
 329         return count;
 330 }
 331 LPROC_SEQ_FOPS(lod_qos_maxage);
 332
 333 static void *lod_osts_seq_start(struct seq_file *p, loff_t *pos)
 334 {
 335         struct obd_device *dev = p->private;
 336         struct lod_device *lod;
 337
 338         LASSERT(dev != NULL);
 339         lod = lu2lod_dev(dev->obd_lu_dev);
 340
 341         lod_getref(&lod->lod_ost_descs); /* released in lod_osts_seq_stop */
 342         if (*pos >= lod->lod_ost_bitmap->size)
 343                 return NULL;
 344
 345         *pos = find_next_bit(lod->lod_ost_bitmap->data,
 346                                  lod->lod_ost_bitmap->size, *pos);
 347         if (*pos < lod->lod_ost_bitmap->size)
 348                 return OST_TGT(lod,*pos);
 349         else
 350                 return NULL;
 351 }
 352
 353 static void lod_osts_seq_stop(struct seq_file *p, void *v)
 354 {
 355         struct obd_device *dev = p->private;
 356         struct lod_device *lod;
 357
 358         LASSERT(dev != NULL);
 359         lod = lu2lod_dev(dev->obd_lu_dev);
 360         lod_putref(lod, &lod->lod_ost_descs);
 361 }
 362
 363 static void *lod_osts_seq_next(struct seq_file *p, void *v, loff_t *pos)
 364 {
 365         struct obd_device *dev = p->private;
 366         struct lod_device *lod = lu2lod_dev(dev->obd_lu_dev);
 367
 368         if (*pos >= lod->lod_ost_bitmap->size - 1)
 369                 return NULL;
 370
 371         *pos = find_next_bit(lod->lod_ost_bitmap->data,
 372                                  lod->lod_ost_bitmap->size, *pos + 1);
 373         if (*pos < lod->lod_ost_bitmap->size)
 374                 return OST_TGT(lod,*pos);
 375         else
 376                 return NULL;
 377 }
 378
 379 static int lod_osts_seq_show(struct seq_file *p, void *v)
 380 {
 381         struct obd_device   *obd = p->private;
 382         struct lod_ost_desc *ost_desc = v;
 383         struct lod_device   *lod;
 384         int                  idx, rc, active;
 385         struct dt_device    *next;
 386         struct obd_statfs    sfs;
 387
 388         LASSERT(obd->obd_lu_dev);
 389         lod = lu2lod_dev(obd->obd_lu_dev);
 390
 391         idx = ost_desc->ltd_index;
 392         next = OST_TGT(lod,idx)->ltd_ost;
 393         if (next == NULL)
 394                 return -EINVAL;
 395
 396         /* XXX: should be non-NULL env, but it's very expensive */
 397         active = 1;
 398         rc = dt_statfs(NULL, next, &sfs);
 399         if (rc == -ENOTCONN) {
 400                 active = 0;
 401                 rc = 0;
 402         } else if (rc)
 403                 return rc;
 404
 405         return seq_printf(p, "%d: %s %sACTIVE\n", idx,
 406                           obd_uuid2str(&ost_desc->ltd_uuid),
 407                           active ? "" : "IN");
 408 }
 409
 410 static const struct seq_operations lod_osts_sops = {
 411         .start  = lod_osts_seq_start,
 412         .stop   = lod_osts_seq_stop,
 413         .next   = lod_osts_seq_next,
 414         .show   = lod_osts_seq_show,
 415 };
 416
 417 static int lod_osts_seq_open(struct inode *inode, struct file *file)
 418 {
 419         struct seq_file *seq;
 420         int rc;
 421
 422         rc = seq_open(file, &lod_osts_sops);
 423         if (rc)
 424                 return rc;
 425
 426         seq = file->private_data;
 427         seq->private = PDE_DATA(inode);
 428         return 0;
 429 }
 430
 431 LPROC_SEQ_FOPS_RO_TYPE(lod, uuid);
 432
 433 LPROC_SEQ_FOPS_RO_TYPE(lod, dt_blksize);
 434 LPROC_SEQ_FOPS_RO_TYPE(lod, dt_kbytestotal);
 435 LPROC_SEQ_FOPS_RO_TYPE(lod, dt_kbytesfree);
 436 LPROC_SEQ_FOPS_RO_TYPE(lod, dt_kbytesavail);
 437 LPROC_SEQ_FOPS_RO_TYPE(lod, dt_filestotal);
 438 LPROC_SEQ_FOPS_RO_TYPE(lod, dt_filesfree);
 439
 440 static struct lprocfs_seq_vars lprocfs_lod_obd_vars[] = {
 441         { .name =       "uuid",
 442           .fops =       &lod_uuid_fops          },
 443         { .name =       "stripesize",
 444           .fops =       &lod_stripesize_fops    },
 445         { .name =       "stripeoffset",
 446           .fops =       &lod_stripeoffset_fops  },
 447         { .name =       "stripecount",
 448           .fops =       &lod_stripecount_fops   },
 449         { .name =       "stripetype",
 450           .fops =       &lod_stripetype_fops    },
 451         { .name =       "numobd",
 452           .fops =       &lod_numobd_fops        },
 453         { .name =       "activeobd",
 454           .fops =       &lod_activeobd_fops     },
 455         { .name =       "desc_uuid",
 456           .fops =       &lod_desc_uuid_fops     },
 457         { .name =       "qos_prio_free",
 458           .fops =       &lod_qos_priofree_fops  },
 459         { .name =       "qos_threshold_rr",
 460           .fops =       &lod_qos_thresholdrr_fops },
 461         { .name =       "qos_maxage",
 462           .fops =       &lod_qos_maxage_fops    },
 463         { 0 }
 464 };
 465
 466 static struct lprocfs_seq_vars lprocfs_lod_osd_vars[] = {
 467         { "blocksize",          &lod_dt_blksize_fops            },
 468         { "kbytestotal",        &lod_dt_kbytestotal_fops        },
 469         { "kbytesfree",         &lod_dt_kbytesfree_fops         },
 470         { "kbytesavail",        &lod_dt_kbytesavail_fops        },
 471         { "filestotal",         &lod_dt_filestotal_fops         },
 472         { "filesfree",          &lod_dt_filesfree_fops          },
 473         { 0 }
 474 };
 475
 476 static const struct file_operations lod_proc_target_fops = {
 477         .owner   = THIS_MODULE,
 478         .open    = lod_osts_seq_open,
 479         .read    = seq_read,
 480         .llseek  = seq_lseek,
 481         .release = lprocfs_seq_release,
 482 };
 483
 484 int lod_procfs_init(struct lod_device *lod)
 485 {
 486         struct obd_device       *obd = lod2obd(lod);
 487         struct proc_dir_entry   *lov_proc_dir = NULL;
 488         struct obd_type         *type;
 489         int                      rc;
 490
 491         obd->obd_vars = lprocfs_lod_obd_vars;
 492         rc = lprocfs_seq_obd_setup(obd);
 493         if (rc) {
 494                 CERROR("%s: cannot setup procfs entry: %d\n",
 495                        obd->obd_name, rc);
 496                 RETURN(rc);
 497         }
 498
 499         rc = lprocfs_seq_add_vars(obd->obd_proc_entry, lprocfs_lod_osd_vars,
 500                                   &lod->lod_dt_dev);
 501         if (rc) {
 502                 CERROR("%s: cannot setup procfs entry: %d\n",
 503                        obd->obd_name, rc);
 504                 GOTO(out, rc);
 505         }
 506
 507         rc = lprocfs_seq_create(obd->obd_proc_entry, "target_obd",
 508                                 0444, &lod_proc_target_fops, obd);
 509         if (rc) {
 510                 CWARN("%s: Error adding the target_obd file %d\n",
 511                       obd->obd_name, rc);
 512                 GOTO(out, rc);
 513         }
 514
 515         lod->lod_pool_proc_entry = lprocfs_seq_register("pools",
 516                                                         obd->obd_proc_entry,
 517                                                         NULL, NULL);
 518         if (IS_ERR(lod->lod_pool_proc_entry)) {
 519                 rc = PTR_ERR(lod->lod_pool_proc_entry);
 520                 lod->lod_pool_proc_entry = NULL;
 521                 CWARN("%s: Failed to create pool proc file: %d\n",
 522                       obd->obd_name, rc);
 523                 GOTO(out, rc);
 524         }
 525
 526         /* If the real LOV is present which is the case for setups
 527          * with both server and clients on the same node then use
 528          * the LOV's proc root */
 529         type = class_search_type(LUSTRE_LOV_NAME);
 530         if (type != NULL && type->typ_procroot != NULL)
 531                 lov_proc_dir = type->typ_procroot;
 532         else
 533                 lov_proc_dir = obd->obd_type->typ_procsym;
 534
 535         if (lov_proc_dir == NULL)
 536                 RETURN(0);
 537
 538         /* for compatibility we link old procfs's LOV entries to lod ones */
 539         lod->lod_symlink = lprocfs_add_symlink(obd->obd_name, lov_proc_dir,
 540                                                "../lod/%s", obd->obd_name);
 541         if (lod->lod_symlink == NULL)
 542                 CERROR("could not register LOV symlink for "
 543                         "/proc/fs/lustre/lod/%s.", obd->obd_name);
 544         RETURN(0);
 545
 546 out:
 547         lprocfs_obd_cleanup(obd);
 548
 549         return rc;
 550 }
 551
 552 void lod_procfs_fini(struct lod_device *lod)
 553 {
 554         struct obd_device *obd = lod2obd(lod);
 555
 556         if (lod->lod_symlink != NULL)
 557                 lprocfs_remove(&lod->lod_symlink);
 558
 559         if (lod->lod_pool_proc_entry != NULL) {
 560                 lprocfs_remove(&lod->lod_pool_proc_entry);
 561                 lod->lod_pool_proc_entry = NULL;
 562         }
 563
 564         lprocfs_obd_cleanup(obd);
 565 }
 566
 567 #endif /* LPROCFS */
 568