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