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 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
  29 #include <asm/statfs.h>
  30 #endif
  31 #include <obd_class.h>
  32 #include <lprocfs_status.h>
  33 #include <linux/seq_file.h>
  34 #include "osc_internal.h"
  35
  36 #ifdef LPROCFS
  37 static int osc_rd_active(char *page, char **start, off_t off,
  38                          int count, int *eof, void *data)
  39 {
  40         struct obd_device *dev = data;
  41         int rc;
  42
  43         LPROCFS_CLIMP_CHECK(dev);
  44         rc = snprintf(page, count, "%d\n", !dev->u.cli.cl_import->imp_deactive);
  45         LPROCFS_CLIMP_EXIT(dev);
  46         return rc;
  47 }
  48
  49 static int osc_wr_active(struct file *file, const char *buffer,
  50                          unsigned long count, void *data)
  51 {
  52         struct obd_device *dev = data;
  53         int val, rc;
  54
  55         rc = lprocfs_write_helper(buffer, count, &val);
  56         if (rc)
  57                 return rc;
  58         if (val < 0 || val > 1)
  59                 return -ERANGE;
  60
  61         LPROCFS_CLIMP_CHECK(dev);
  62         /* opposite senses */
  63         if (dev->u.cli.cl_import->imp_deactive == val)
  64                 rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
  65         else
  66                 CDEBUG(D_CONFIG, "activate %d: ignoring repeat request\n", val);
  67
  68         LPROCFS_CLIMP_EXIT(dev);
  69         return count;
  70 }
  71
  72 static int osc_rd_max_pages_per_rpc(char *page, char **start, off_t off,
  73                                     int count, int *eof, void *data)
  74 {
  75         struct obd_device *dev = data;
  76         struct client_obd *cli = &dev->u.cli;
  77         int rc;
  78
  79         client_obd_list_lock(&cli->cl_loi_list_lock);
  80         rc = snprintf(page, count, "%d\n", cli->cl_max_pages_per_rpc);
  81         client_obd_list_unlock(&cli->cl_loi_list_lock);
  82         return rc;
  83 }
  84
  85 static int osc_wr_max_pages_per_rpc(struct file *file, const char *buffer,
  86                                     unsigned long count, void *data)
  87 {
  88         struct obd_device *dev = data;
  89         struct client_obd *cli = &dev->u.cli;
  90         struct obd_connect_data *ocd = &cli->cl_import->imp_connect_data;
  91         int val, rc;
  92
  93         rc = lprocfs_write_helper(buffer, count, &val);
  94         if (rc)
  95                 return rc;
  96
  97         LPROCFS_CLIMP_CHECK(dev);
  98         if (val < 1 || val > ocd->ocd_brw_size >> CFS_PAGE_SHIFT) {
  99                 LPROCFS_CLIMP_EXIT(dev);
 100                 return -ERANGE;
 101         }
 102         client_obd_list_lock(&cli->cl_loi_list_lock);
 103         cli->cl_max_pages_per_rpc = val;
 104         client_obd_list_unlock(&cli->cl_loi_list_lock);
 105
 106         LPROCFS_CLIMP_EXIT(dev);
 107         return count;
 108 }
 109
 110 static int osc_rd_max_rpcs_in_flight(char *page, char **start, off_t off,
 111                                      int count, int *eof, void *data)
 112 {
 113         struct obd_device *dev = data;
 114         struct client_obd *cli = &dev->u.cli;
 115         int rc;
 116
 117         client_obd_list_lock(&cli->cl_loi_list_lock);
 118         rc = snprintf(page, count, "%u\n", cli->cl_max_rpcs_in_flight);
 119         client_obd_list_unlock(&cli->cl_loi_list_lock);
 120         return rc;
 121 }
 122
 123 static int osc_wr_max_rpcs_in_flight(struct file *file, const char *buffer,
 124                                      unsigned long count, void *data)
 125 {
 126         struct obd_device *dev = data;
 127         struct client_obd *cli = &dev->u.cli;
 128         struct ptlrpc_request_pool *pool = cli->cl_import->imp_rq_pool;
 129         int val, rc;
 130
 131         rc = lprocfs_write_helper(buffer, count, &val);
 132         if (rc)
 133                 return rc;
 134
 135         if (val < 1 || val > OSC_MAX_RIF_MAX)
 136                 return -ERANGE;
 137
 138         LPROCFS_CLIMP_CHECK(dev);
 139         if (pool && val > cli->cl_max_rpcs_in_flight)
 140                 pool->prp_populate(pool, val-cli->cl_max_rpcs_in_flight);
 141
 142         client_obd_list_lock(&cli->cl_loi_list_lock);
 143         cli->cl_max_rpcs_in_flight = val;
 144         client_obd_list_unlock(&cli->cl_loi_list_lock);
 145
 146         LPROCFS_CLIMP_EXIT(dev);
 147         return count;
 148 }
 149
 150 static int osc_rd_max_dirty_mb(char *page, char **start, off_t off, int count,
 151                                int *eof, void *data)
 152 {
 153         struct obd_device *dev = data;
 154         struct client_obd *cli = &dev->u.cli;
 155         long val;
 156         int mult;
 157
 158         client_obd_list_lock(&cli->cl_loi_list_lock);
 159         val = cli->cl_dirty_max;
 160         client_obd_list_unlock(&cli->cl_loi_list_lock);
 161
 162         mult = 1 << 20;
 163         return lprocfs_read_frac_helper(page, count, val, mult);
 164 }
 165
 166 static int osc_wr_max_dirty_mb(struct file *file, const char *buffer,
 167                                unsigned long count, void *data)
 168 {
 169         struct obd_device *dev = data;
 170         struct client_obd *cli = &dev->u.cli;
 171         int pages_number, mult, rc;
 172
 173         mult = 1 << (20 - CFS_PAGE_SHIFT);
 174         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 175         if (rc)
 176                 return rc;
 177
 178         if (pages_number < 0 ||
 179             pages_number > OSC_MAX_DIRTY_MB_MAX << (20 - CFS_PAGE_SHIFT) ||
 180             pages_number > num_physpages / 4) /* 1/4 of RAM */
 181                 return -ERANGE;
 182
 183         client_obd_list_lock(&cli->cl_loi_list_lock);
 184         cli->cl_dirty_max = (obd_count)(pages_number << CFS_PAGE_SHIFT);
 185         osc_wake_cache_waiters(cli);
 186         client_obd_list_unlock(&cli->cl_loi_list_lock);
 187
 188         return count;
 189 }
 190
 191 static int osc_rd_cur_dirty_bytes(char *page, char **start, off_t off,
 192                                   int count, int *eof, void *data)
 193 {
 194         struct obd_device *dev = data;
 195         struct client_obd *cli = &dev->u.cli;
 196         int rc;
 197
 198         client_obd_list_lock(&cli->cl_loi_list_lock);
 199         rc = snprintf(page, count, "%lu\n", cli->cl_dirty);
 200         client_obd_list_unlock(&cli->cl_loi_list_lock);
 201         return rc;
 202 }
 203
 204 static int osc_rd_cur_grant_bytes(char *page, char **start, off_t off,
 205                                   int count, int *eof, void *data)
 206 {
 207         struct obd_device *dev = data;
 208         struct client_obd *cli = &dev->u.cli;
 209         int rc;
 210
 211         client_obd_list_lock(&cli->cl_loi_list_lock);
 212         rc = snprintf(page, count, "%lu\n", cli->cl_avail_grant);
 213         client_obd_list_unlock(&cli->cl_loi_list_lock);
 214         return rc;
 215 }
 216
 217 static int osc_rd_create_count(char *page, char **start, off_t off, int count,
 218                                int *eof, void *data)
 219 {
 220         struct obd_device *obd = data;
 221
 222         if (obd == NULL)
 223                 return 0;
 224
 225         return snprintf(page, count, "%d\n",
 226                         obd->u.cli.cl_oscc.oscc_grow_count);
 227 }
 228
 229 static int osc_wr_create_count(struct file *file, const char *buffer,
 230                                unsigned long count, void *data)
 231 {
 232         struct obd_device *obd = data;
 233         int val, rc;
 234
 235         if (obd == NULL)
 236                 return 0;
 237
 238         rc = lprocfs_write_helper(buffer, count, &val);
 239         if (rc)
 240                 return rc;
 241
 242         if (val < 0)
 243                 return -ERANGE;
 244         if (val > OST_MAX_PRECREATE)
 245                 return -ERANGE;
 246
 247         obd->u.cli.cl_oscc.oscc_grow_count = val;
 248
 249         return count;
 250 }
 251
 252 static int osc_rd_prealloc_next_id(char *page, char **start, off_t off,
 253                                    int count, int *eof, void *data)
 254 {
 255         struct obd_device *obd = data;
 256
 257         if (obd == NULL)
 258                 return 0;
 259
 260         return snprintf(page, count, LPU64"\n",
 261                         obd->u.cli.cl_oscc.oscc_next_id);
 262 }
 263
 264 static int osc_rd_prealloc_last_id(char *page, char **start, off_t off,
 265                                    int count, int *eof, void *data)
 266 {
 267         struct obd_device *obd = data;
 268
 269         if (obd == NULL)
 270                 return 0;
 271
 272         return snprintf(page, count, LPU64"\n",
 273                         obd->u.cli.cl_oscc.oscc_last_id);
 274 }
 275
 276 static int osc_rd_checksum(char *page, char **start, off_t off, int count,
 277                            int *eof, void *data)
 278 {
 279         struct obd_device *obd = data;
 280
 281         if (obd == NULL)
 282                 return 0;
 283
 284         return snprintf(page, count, "%d\n",
 285                         obd->u.cli.cl_checksum ? 1 : 0);
 286 }
 287
 288 static int osc_wr_checksum(struct file *file, const char *buffer,
 289                            unsigned long count, void *data)
 290 {
 291         struct obd_device *obd = data;
 292         int val, rc;
 293
 294         if (obd == NULL)
 295                 return 0;
 296
 297         rc = lprocfs_write_helper(buffer, count, &val);
 298         if (rc)
 299                 return rc;
 300
 301         obd->u.cli.cl_checksum = (val ? 1 : 0);
 302
 303         return count;
 304 }
 305
 306 static int osc_rd_resend_count(char *page, char **start, off_t off, int count,
 307                                int *eof, void *data)
 308 {
 309         struct obd_device *obd = data;
 310
 311         return snprintf(page, count, "%u\n", atomic_read(&obd->u.cli.cl_resends));
 312 }
 313
 314 static int osc_wr_resend_count(struct file *file, const char *buffer,
 315                                unsigned long count, void *data)
 316 {
 317         struct obd_device *obd = data;
 318         int val, rc;
 319
 320         rc = lprocfs_write_helper(buffer, count, &val);
 321         if (rc)
 322                 return rc;
 323
 324         if (val < 0)
 325                return -EINVAL;
 326
 327         atomic_set(&obd->u.cli.cl_resends, val);
 328
 329         return count;
 330 }
 331
 332 static struct lprocfs_vars lprocfs_obd_vars[] = {
 333         { "uuid",            lprocfs_rd_uuid,        0, 0 },
 334         { "ping",            0, lprocfs_wr_ping,        0 },
 335         { "connect_flags",   lprocfs_rd_connect_flags, 0, 0 },
 336         { "blocksize",       lprocfs_rd_blksize,     0, 0 },
 337         { "kbytestotal",     lprocfs_rd_kbytestotal, 0, 0 },
 338         { "kbytesfree",      lprocfs_rd_kbytesfree,  0, 0 },
 339         { "kbytesavail",     lprocfs_rd_kbytesavail, 0, 0 },
 340         { "filestotal",      lprocfs_rd_filestotal,  0, 0 },
 341         { "filesfree",       lprocfs_rd_filesfree,   0, 0 },
 342         //{ "filegroups",      lprocfs_rd_filegroups,  0, 0 },
 343         { "ost_server_uuid", lprocfs_rd_server_uuid, 0, 0 },
 344         { "ost_conn_uuid",   lprocfs_rd_conn_uuid, 0, 0 },
 345         { "active",          osc_rd_active,
 346                              osc_wr_active, 0 },
 347         { "max_pages_per_rpc", osc_rd_max_pages_per_rpc,
 348                                osc_wr_max_pages_per_rpc, 0 },
 349         { "max_rpcs_in_flight", osc_rd_max_rpcs_in_flight,
 350                                 osc_wr_max_rpcs_in_flight, 0 },
 351         { "max_dirty_mb",    osc_rd_max_dirty_mb, osc_wr_max_dirty_mb, 0 },
 352         { "cur_dirty_bytes", osc_rd_cur_dirty_bytes, 0, 0 },
 353         { "cur_grant_bytes", osc_rd_cur_grant_bytes, 0, 0 },
 354         { "create_count",    osc_rd_create_count, osc_wr_create_count, 0 },
 355         { "prealloc_next_id", osc_rd_prealloc_next_id, 0, 0 },
 356         { "prealloc_last_id", osc_rd_prealloc_last_id, 0, 0 },
 357         { "checksums",       osc_rd_checksum, osc_wr_checksum, 0 },
 358         { "sptlrpc",         sptlrpc_lprocfs_rd, 0, 0 },
 359         { "resend_count",    osc_rd_resend_count, osc_wr_resend_count, 0},
 360         { 0 }
 361 };
 362
 363 static struct lprocfs_vars lprocfs_module_vars[] = {
 364         { "num_refs",        lprocfs_rd_numrefs,     0, 0 },
 365         { 0 }
 366 };
 367
 368 #define pct(a,b) (b ? a * 100 / b : 0)
 369
 370 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 371 {
 372         struct timeval now;
 373         struct obd_device *dev = seq->private;
 374         struct client_obd *cli = &dev->u.cli;
 375         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 376         int i;
 377
 378         do_gettimeofday(&now);
 379
 380         client_obd_list_lock(&cli->cl_loi_list_lock);
 381
 382         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 383                    now.tv_sec, now.tv_usec);
 384         seq_printf(seq, "read RPCs in flight:  %d\n",
 385                    cli->cl_r_in_flight);
 386         seq_printf(seq, "write RPCs in flight: %d\n",
 387                    cli->cl_w_in_flight);
 388         seq_printf(seq, "pending write pages:  %d\n",
 389                    cli->cl_pending_w_pages);
 390         seq_printf(seq, "pending read pages:   %d\n",
 391                    cli->cl_pending_r_pages);
 392
 393         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 394         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 395         seq_printf(seq, "       rpcs   %% cum %%\n");
 396
 397         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 398         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 399
 400         read_cum = 0;
 401         write_cum = 0;
 402         for (i = 0; i < OBD_HIST_MAX; i++) {
 403                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 404                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 405                 read_cum += r;
 406                 write_cum += w;
 407                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 408                                  1 << i, r, pct(r, read_tot),
 409                                  pct(read_cum, read_tot), w,
 410                                  pct(w, write_tot),
 411                                  pct(write_cum, write_tot));
 412                 if (read_cum == read_tot && write_cum == write_tot)
 413                         break;
 414         }
 415
 416         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 417         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 418         seq_printf(seq, "       rpcs   %% cum %%\n");
 419
 420         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 421         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 422
 423         read_cum = 0;
 424         write_cum = 0;
 425         for (i = 0; i < OBD_HIST_MAX; i++) {
 426                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 427                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 428                 read_cum += r;
 429                 write_cum += w;
 430                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 431                                  i, r, pct(r, read_tot),
 432                                  pct(read_cum, read_tot), w,
 433                                  pct(w, write_tot),
 434                                  pct(write_cum, write_tot));
 435                 if (read_cum == read_tot && write_cum == write_tot)
 436                         break;
 437         }
 438
 439         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 440         seq_printf(seq, "offset                rpcs   %% cum %% |");
 441         seq_printf(seq, "       rpcs   %% cum %%\n");
 442
 443         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 444         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 445
 446         read_cum = 0;
 447         write_cum = 0;
 448         for (i = 0; i < OBD_HIST_MAX; i++) {
 449                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 450                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 451                 read_cum += r;
 452                 write_cum += w;
 453                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 454                            (i == 0) ? 0 : 1 << (i - 1),
 455                            r, pct(r, read_tot), pct(read_cum, read_tot),
 456                            w, pct(w, write_tot), pct(write_cum, write_tot));
 457                 if (read_cum == read_tot && write_cum == write_tot)
 458                         break;
 459         }
 460
 461         client_obd_list_unlock(&cli->cl_loi_list_lock);
 462
 463         return 0;
 464 }
 465 #undef pct
 466
 467 static ssize_t osc_rpc_stats_seq_write(struct file *file, const char *buf,
 468                                        size_t len, loff_t *off)
 469 {
 470         struct seq_file *seq = file->private_data;
 471         struct obd_device *dev = seq->private;
 472         struct client_obd *cli = &dev->u.cli;
 473
 474         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 475         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 476         lprocfs_oh_clear(&cli->cl_read_page_hist);
 477         lprocfs_oh_clear(&cli->cl_write_page_hist);
 478         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 479         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 480
 481         return len;
 482 }
 483
 484 LPROC_SEQ_FOPS(osc_rpc_stats);
 485
 486 int lproc_osc_attach_seqstat(struct obd_device *dev)
 487 {
 488         return lprocfs_obd_seq_create(dev, "rpc_stats", 0444,
 489                                       &osc_rpc_stats_fops, dev);
 490 }
 491
 492 LPROCFS_INIT_VARS(osc, lprocfs_module_vars, lprocfs_obd_vars)
 493 #endif /* LPROCFS */
 494