lustre/osc/lproc_osc.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (C) 2002, 2003 Cluster File Systems, Inc.
   5  *
   6  *   This file is part of the Lustre file system, http://www.lustre.org
   7  *   Lustre is a trademark of Cluster File Systems, Inc.
   8  *
   9  *   You may have signed or agreed to another license before downloading
  10  *   this software.  If so, you are bound by the terms and conditions
  11  *   of that agreement, and the following does not apply to you.  See the
  12  *   LICENSE file included with this distribution for more information.
  13  *
  14  *   If you did not agree to a different license, then this copy of Lustre
  15  *   is open source software; you can redistribute it and/or modify it
  16  *   under the terms of version 2 of the GNU General Public License as
  17  *   published by the Free Software Foundation.
  18  *
  19  *   In either case, Lustre is distributed in the hope that it will be
  20  *   useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  21  *   of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  *   license text for more details.
  23  *
  24  */
  25 #define DEBUG_SUBSYSTEM S_CLASS
  26
  27 #include <linux/version.h>
  28 #include <asm/statfs.h>
  29 #include <obd_cksum.h>
  30 #include <obd_class.h>
  31 #include <lprocfs_status.h>
  32 #include <linux/seq_file.h>
  33 #include "osc_internal.h"
  34
  35 #ifdef LPROCFS
  36 static int osc_rd_active(char *page, char **start, off_t off,
  37                          int count, int *eof, void *data)
  38 {
  39         struct obd_device *dev = data;
  40         int rc;
  41
  42         LPROCFS_CLIMP_CHECK(dev);
  43         rc = snprintf(page, count, "%d\n", !dev->u.cli.cl_import->imp_deactive);
  44         LPROCFS_CLIMP_EXIT(dev);
  45         return rc;
  46 }
  47
  48 static int osc_wr_active(struct file *file, const char *buffer,
  49                          unsigned long count, void *data)
  50 {
  51         struct obd_device *dev = data;
  52         int val, rc;
  53
  54         rc = lprocfs_write_helper(buffer, count, &val);
  55         if (rc)
  56                 return rc;
  57         if (val < 0 || val > 1)
  58                 return -ERANGE;
  59
  60         LPROCFS_CLIMP_CHECK(dev);
  61         /* opposite senses */
  62         if (dev->u.cli.cl_import->imp_deactive == val)
  63                 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
  64         else
  65                 CDEBUG(D_CONFIG, "activate %d: ignoring repeat request\n", val);
  66
  67         LPROCFS_CLIMP_EXIT(dev);
  68         return count;
  69 }
  70
  71 static int osc_rd_max_pages_per_rpc(char *page, char **start, off_t off,
  72                                     int count, int *eof, void *data)
  73 {
  74         struct obd_device *dev = data;
  75         struct client_obd *cli = &dev->u.cli;
  76         int rc;
  77
  78         client_obd_list_lock(&cli->cl_loi_list_lock);
  79         rc = snprintf(page, count, "%d\n", cli->cl_max_pages_per_rpc);
  80         client_obd_list_unlock(&cli->cl_loi_list_lock);
  81         return rc;
  82 }
  83
  84 static int osc_wr_max_pages_per_rpc(struct file *file, const char *buffer,
  85                                     unsigned long count, void *data)
  86 {
  87         struct obd_device *dev = data;
  88         struct client_obd *cli = &dev->u.cli;
  89         struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
  90         int val, rc;
  91
  92         rc = lprocfs_write_helper(buffer, count, &val);
  93         if (rc)
  94                 return rc;
  95
  96         LPROCFS_CLIMP_CHECK(dev);
  97         if (val < 1 || val > ocd->ocd_brw_size >> CFS_PAGE_SHIFT) {
  98                 LPROCFS_CLIMP_EXIT(dev);
  99                 return -ERANGE;
 100         }
 101         client_obd_list_lock(&cli->cl_loi_list_lock);
 102         cli->cl_max_pages_per_rpc = val;
 103         client_obd_list_unlock(&cli->cl_loi_list_lock);
 104
 105         LPROCFS_CLIMP_EXIT(dev);
 106         return count;
 107 }
 108
 109 static int osc_rd_max_rpcs_in_flight(char *page, char **start, off_t off,
 110                                      int count, int *eof, void *data)
 111 {
 112         struct obd_device *dev = data;
 113         struct client_obd *cli = &dev->u.cli;
 114         int rc;
 115
 116         client_obd_list_lock(&cli->cl_loi_list_lock);
 117         rc = snprintf(page, count, "%u\n", cli->cl_max_rpcs_in_flight);
 118         client_obd_list_unlock(&cli->cl_loi_list_lock);
 119         return rc;
 120 }
 121
 122 static int osc_wr_max_rpcs_in_flight(struct file *file, const char *buffer,
 123                                      unsigned long count, void *data)
 124 {
 125         struct obd_device *dev = data;
 126         struct client_obd *cli = &dev->u.cli;
 127         struct ptlrpc_request_pool *pool = cli->cl_import->imp_rq_pool;
 128         int val, rc;
 129
 130         rc = lprocfs_write_helper(buffer, count, &val);
 131         if (rc)
 132                 return rc;
 133
 134         if (val < 1 || val > OSC_MAX_RIF_MAX)
 135                 return -ERANGE;
 136
 137         LPROCFS_CLIMP_CHECK(dev);
 138         if (pool && val > cli->cl_max_rpcs_in_flight)
 139                 pool->prp_populate(pool, val-cli->cl_max_rpcs_in_flight);
 140
 141         client_obd_list_lock(&cli->cl_loi_list_lock);
 142         cli->cl_max_rpcs_in_flight = val;
 143         client_obd_list_unlock(&cli->cl_loi_list_lock);
 144
 145         LPROCFS_CLIMP_EXIT(dev);
 146         return count;
 147 }
 148
 149 static int osc_rd_max_dirty_mb(char *page, char **start, off_t off, int count,
 150                                int *eof, void *data)
 151 {
 152         struct obd_device *dev = data;
 153         struct client_obd *cli = &dev->u.cli;
 154         long val;
 155         int mult;
 156
 157         client_obd_list_lock(&cli->cl_loi_list_lock);
 158         val = cli->cl_dirty_max;
 159         client_obd_list_unlock(&cli->cl_loi_list_lock);
 160
 161         mult = 1 << 20;
 162         return lprocfs_read_frac_helper(page, count, val, mult);
 163 }
 164
 165 static int osc_wr_max_dirty_mb(struct file *file, const char *buffer,
 166                                unsigned long count, void *data)
 167 {
 168         struct obd_device *dev = data;
 169         struct client_obd *cli = &dev->u.cli;
 170         int pages_number, mult, rc;
 171
 172         mult = 1 << (20 - CFS_PAGE_SHIFT);
 173         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 174         if (rc)
 175                 return rc;
 176
 177         if (pages_number < 0 ||
 178             pages_number > OSC_MAX_DIRTY_MB_MAX << (20 - CFS_PAGE_SHIFT) ||
 179             pages_number > num_physpages / 4) /* 1/4 of RAM */
 180                 return -ERANGE;
 181
 182         client_obd_list_lock(&cli->cl_loi_list_lock);
 183         cli->cl_dirty_max = (obd_count)(pages_number << CFS_PAGE_SHIFT);
 184         osc_wake_cache_waiters(cli);
 185         client_obd_list_unlock(&cli->cl_loi_list_lock);
 186
 187         return count;
 188 }
 189
 190 static int osc_rd_cur_dirty_bytes(char *page, char **start, off_t off,
 191                                   int count, int *eof, void *data)
 192 {
 193         struct obd_device *dev = data;
 194         struct client_obd *cli = &dev->u.cli;
 195         int rc;
 196
 197         client_obd_list_lock(&cli->cl_loi_list_lock);
 198         rc = snprintf(page, count, "%lu\n", cli->cl_dirty);
 199         client_obd_list_unlock(&cli->cl_loi_list_lock);
 200         return rc;
 201 }
 202
 203 static int osc_rd_cur_grant_bytes(char *page, char **start, off_t off,
 204                                   int count, int *eof, void *data)
 205 {
 206         struct obd_device *dev = data;
 207         struct client_obd *cli = &dev->u.cli;
 208         int rc;
 209
 210         client_obd_list_lock(&cli->cl_loi_list_lock);
 211         rc = snprintf(page, count, "%lu\n", cli->cl_avail_grant);
 212         client_obd_list_unlock(&cli->cl_loi_list_lock);
 213         return rc;
 214 }
 215
 216 static int osc_rd_create_count(char *page, char **start, off_t off, int count,
 217                                int *eof, void *data)
 218 {
 219         struct obd_device *obd = data;
 220
 221         if (obd == NULL)
 222                 return 0;
 223
 224         return snprintf(page, count, "%d\n",
 225                         obd->u.cli.cl_oscc.oscc_grow_count);
 226 }
 227
 228 static int osc_wr_create_count(struct file *file, const char *buffer,
 229                                unsigned long count, void *data)
 230 {
 231         struct obd_device *obd = data;
 232         int val, rc;
 233
 234         if (obd == NULL)
 235                 return 0;
 236
 237         rc = lprocfs_write_helper(buffer, count, &val);
 238         if (rc)
 239                 return rc;
 240
 241         if (val < 0)
 242                 return -ERANGE;
 243         if (val > OST_MAX_PRECREATE)
 244                 return -ERANGE;
 245
 246         obd->u.cli.cl_oscc.oscc_grow_count = val;
 247
 248         return count;
 249 }
 250
 251 static int osc_rd_prealloc_next_id(char *page, char **start, off_t off,
 252                                    int count, int *eof, void *data)
 253 {
 254         struct obd_device *obd = data;
 255
 256         if (obd == NULL)
 257                 return 0;
 258
 259         return snprintf(page, count, LPU64"\n",
 260                         obd->u.cli.cl_oscc.oscc_next_id);
 261 }
 262
 263 static int osc_rd_prealloc_last_id(char *page, char **start, off_t off,
 264                                    int count, int *eof, void *data)
 265 {
 266         struct obd_device *obd = data;
 267
 268         if (obd == NULL)
 269                 return 0;
 270
 271         return snprintf(page, count, LPU64"\n",
 272                         obd->u.cli.cl_oscc.oscc_last_id);
 273 }
 274
 275 static int osc_rd_checksum(char *page, char **start, off_t off, int count,
 276                            int *eof, void *data)
 277 {
 278         struct obd_device *obd = data;
 279
 280         if (obd == NULL)
 281                 return 0;
 282
 283         return snprintf(page, count, "%d\n",
 284                         obd->u.cli.cl_checksum ? 1 : 0);
 285 }
 286
 287 static int osc_wr_checksum(struct file *file, const char *buffer,
 288                            unsigned long count, void *data)
 289 {
 290         struct obd_device *obd = data;
 291         int val, rc;
 292
 293         if (obd == NULL)
 294                 return 0;
 295
 296         rc = lprocfs_write_helper(buffer, count, &val);
 297         if (rc)
 298                 return rc;
 299
 300         obd->u.cli.cl_checksum = (val ? 1 : 0);
 301
 302         return count;
 303 }
 304
 305 static int osc_rd_checksum_type(char *page, char **start, off_t off, int count,
 306                                 int *eof, void *data)
 307 {
 308         struct obd_device *obd = data;
 309         int i, len =0;
 310         DECLARE_CKSUM_NAME;
 311
 312         if (obd == NULL)
 313                 return 0;
 314
 315         for (i = 0; i < ARRAY_SIZE(cksum_name) && len < count; i++) {
 316                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 317                         continue;
 318                 if (obd->u.cli.cl_cksum_type == (1 << i))
 319                         len += snprintf(page + len, count - len, "[%s] ",
 320                                         cksum_name[i]);
 321                 else
 322                         len += snprintf(page + len, count - len, "%s ",
 323                                         cksum_name[i]);
 324         }
 325         if (len < count)
 326                 len += sprintf(page + len, "\n");
 327         return len;
 328 }
 329
 330 static int osc_wd_checksum_type(struct file *file, const char *buffer,
 331                                 unsigned long count, void *data)
 332 {
 333         struct obd_device *obd = data;
 334         int i;
 335         DECLARE_CKSUM_NAME;
 336         char kernbuf[10];
 337
 338         if (obd == NULL)
 339                 return 0;
 340
 341         if (count > sizeof(kernbuf) - 1)
 342                 return -EINVAL;
 343         if (copy_from_user(kernbuf, buffer, count))
 344                 return -EFAULT;
 345         if (count > 0 && kernbuf[count - 1] == '\n')
 346                 kernbuf[count - 1] = '\0';
 347         else
 348                 kernbuf[count] = '\0';
 349
 350         for (i = 0; i < ARRAY_SIZE(cksum_name); i++) {
 351                 if (((1 << i) & obd->u.cli.cl_supp_cksum_types) == 0)
 352                         continue;
 353                 if (!strcmp(kernbuf, cksum_name[i])) {
 354                        obd->u.cli.cl_cksum_type = 1 << i;
 355                        return count;
 356                 }
 357         }
 358         return -EINVAL;
 359 }
 360
 361 static int osc_rd_resend_count(char *page, char **start, off_t off, int count,
 362                                int *eof, void *data)
 363 {
 364         struct obd_device *obd = data;
 365
 366         return snprintf(page, count, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 367 }
 368
 369 static int osc_wr_resend_count(struct file *file, const char *buffer,
 370                                unsigned long count, void *data)
 371 {
 372         struct obd_device *obd = data;
 373         int val, rc;
 374
 375         rc = lprocfs_write_helper(buffer, count, &val);
 376         if (rc)
 377                 return rc;
 378
 379         if (val < 0)
 380                return -EINVAL;
 381
 382         atomic_set(&obd->u.cli.cl_resends, val);
 383
 384         return count;
 385 }
 386
 387 static struct lprocfs_vars lprocfs_osc_obd_vars[] = {
 388         { "uuid",            lprocfs_rd_uuid,        0, 0 },
 389         { "ping",            0, lprocfs_wr_ping,        0 },
 390         { "connect_flags",   lprocfs_rd_connect_flags, 0, 0 },
 391         { "blocksize",       lprocfs_rd_blksize,     0, 0 },
 392         { "kbytestotal",     lprocfs_rd_kbytestotal, 0, 0 },
 393         { "kbytesfree",      lprocfs_rd_kbytesfree,  0, 0 },
 394         { "kbytesavail",     lprocfs_rd_kbytesavail, 0, 0 },
 395         { "filestotal",      lprocfs_rd_filestotal,  0, 0 },
 396         { "filesfree",       lprocfs_rd_filesfree,   0, 0 },
 397         //{ "filegroups",      lprocfs_rd_filegroups,  0, 0 },
 398         { "ost_server_uuid", lprocfs_rd_server_uuid, 0, 0 },
 399         { "ost_conn_uuid",   lprocfs_rd_conn_uuid, 0, 0 },
 400         { "active",          osc_rd_active,
 401                              osc_wr_active, 0 },
 402         { "max_pages_per_rpc", osc_rd_max_pages_per_rpc,
 403                                osc_wr_max_pages_per_rpc, 0 },
 404         { "max_rpcs_in_flight", osc_rd_max_rpcs_in_flight,
 405                                 osc_wr_max_rpcs_in_flight, 0 },
 406         { "max_dirty_mb",    osc_rd_max_dirty_mb, osc_wr_max_dirty_mb, 0 },
 407         { "cur_dirty_bytes", osc_rd_cur_dirty_bytes, 0, 0 },
 408         { "cur_grant_bytes", osc_rd_cur_grant_bytes, 0, 0 },
 409         { "create_count",    osc_rd_create_count, osc_wr_create_count, 0 },
 410         { "prealloc_next_id", osc_rd_prealloc_next_id, 0, 0 },
 411         { "prealloc_last_id", osc_rd_prealloc_last_id, 0, 0 },
 412         { "checksums",       osc_rd_checksum, osc_wr_checksum, 0 },
 413         { "checksum_type",   osc_rd_checksum_type, osc_wd_checksum_type, 0 },
 414         { "resend_count",    osc_rd_resend_count, osc_wr_resend_count, 0},
 415         { 0 }
 416 };
 417
 418 static struct lprocfs_vars lprocfs_osc_module_vars[] = {
 419         { "num_refs",        lprocfs_rd_numrefs,     0, 0 },
 420         { 0 }
 421 };
 422
 423 #define pct(a,b) (b ? a * 100 / b : 0)
 424
 425 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 426 {
 427         struct timeval now;
 428         struct obd_device *dev = seq->private;
 429         struct client_obd *cli = &dev->u.cli;
 430         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 431         int i;
 432
 433         do_gettimeofday(&now);
 434
 435         client_obd_list_lock(&cli->cl_loi_list_lock);
 436
 437         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 438                    now.tv_sec, now.tv_usec);
 439         seq_printf(seq, "read RPCs in flight:  %d\n",
 440                    cli->cl_r_in_flight);
 441         seq_printf(seq, "write RPCs in flight: %d\n",
 442                    cli->cl_w_in_flight);
 443         seq_printf(seq, "pending write pages:  %d\n",
 444                    cli->cl_pending_w_pages);
 445         seq_printf(seq, "pending read pages:   %d\n",
 446                    cli->cl_pending_r_pages);
 447
 448         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 449         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 450         seq_printf(seq, "       rpcs   %% cum %%\n");
 451
 452         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 453         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 454
 455         read_cum = 0;
 456         write_cum = 0;
 457         for (i = 0; i < OBD_HIST_MAX; i++) {
 458                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 459                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 460                 read_cum += r;
 461                 write_cum += w;
 462                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 463                                  1 << i, r, pct(r, read_tot),
 464                                  pct(read_cum, read_tot), w,
 465                                  pct(w, write_tot),
 466                                  pct(write_cum, write_tot));
 467                 if (read_cum == read_tot && write_cum == write_tot)
 468                         break;
 469         }
 470
 471         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 472         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 473         seq_printf(seq, "       rpcs   %% cum %%\n");
 474
 475         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 476         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 477
 478         read_cum = 0;
 479         write_cum = 0;
 480         for (i = 0; i < OBD_HIST_MAX; i++) {
 481                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 482                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 483                 read_cum += r;
 484                 write_cum += w;
 485                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 486                                  i, r, pct(r, read_tot),
 487                                  pct(read_cum, read_tot), w,
 488                                  pct(w, write_tot),
 489                                  pct(write_cum, write_tot));
 490                 if (read_cum == read_tot && write_cum == write_tot)
 491                         break;
 492         }
 493
 494         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 495         seq_printf(seq, "offset                rpcs   %% cum %% |");
 496         seq_printf(seq, "       rpcs   %% cum %%\n");
 497
 498         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 499         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 500
 501         read_cum = 0;
 502         write_cum = 0;
 503         for (i = 0; i < OBD_HIST_MAX; i++) {
 504                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 505                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 506                 read_cum += r;
 507                 write_cum += w;
 508                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 509                            (i == 0) ? 0 : 1 << (i - 1),
 510                            r, pct(r, read_tot), pct(read_cum, read_tot),
 511                            w, pct(w, write_tot), pct(write_cum, write_tot));
 512                 if (read_cum == read_tot && write_cum == write_tot)
 513                         break;
 514         }
 515
 516         client_obd_list_unlock(&cli->cl_loi_list_lock);
 517
 518         return 0;
 519 }
 520 #undef pct
 521
 522 static ssize_t osc_rpc_stats_seq_write(struct file *file, const char *buf,
 523                                        size_t len, loff_t *off)
 524 {
 525         struct seq_file *seq = file->private_data;
 526         struct obd_device *dev = seq->private;
 527         struct client_obd *cli = &dev->u.cli;
 528
 529         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 530         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 531         lprocfs_oh_clear(&cli->cl_read_page_hist);
 532         lprocfs_oh_clear(&cli->cl_write_page_hist);
 533         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 534         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 535
 536         return len;
 537 }
 538
 539 LPROC_SEQ_FOPS(osc_rpc_stats);
 540
 541 int lproc_osc_attach_seqstat(struct obd_device *dev)
 542 {
 543         return lprocfs_obd_seq_create(dev, "rpc_stats", 0444,
 544                                       &osc_rpc_stats_fops, dev);
 545 }
 546
 547 void lprocfs_osc_init_vars(struct lprocfs_static_vars *lvars)
 548 {
 549         lvars->module_vars = lprocfs_osc_module_vars;
 550         lvars->obd_vars    = lprocfs_osc_obd_vars;
 551 }
 552 #endif /* LPROCFS */
 553