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
  73 static int osc_rd_max_pages_per_rpc(char *page, char **start, off_t off,
  74                                     int count, int *eof, void *data)
  75 {
  76         struct obd_device *dev = data;
  77         struct client_obd *cli = &dev->u.cli;
  78         int rc;
  79
  80         client_obd_list_lock(&cli->cl_loi_list_lock);
  81         rc = snprintf(page, count, "%d\n", cli->cl_max_pages_per_rpc);
  82         client_obd_list_unlock(&cli->cl_loi_list_lock);
  83         return rc;
  84 }
  85
  86 static int osc_wr_max_pages_per_rpc(struct file *file, const char *buffer,
  87                                     unsigned long count, void *data)
  88 {
  89         struct obd_device *dev = data;
  90         struct client_obd *cli = &dev->u.cli;
  91         struct obd_connect_data *ocd;
  92         int val, rc;
  93
  94         rc = lprocfs_write_helper(buffer, count, &val);
  95         if (rc)
  96                 return rc;
  97
  98         LPROCFS_CLIMP_CHECK(dev);
  99         ocd = &cli->cl_import->imp_connect_data;
 100         if (val < 1 || val > ocd->ocd_brw_size >> CFS_PAGE_SHIFT) {
 101                 LPROCFS_CLIMP_EXIT(dev);
 102                 return -ERANGE;
 103         }
 104         client_obd_list_lock(&cli->cl_loi_list_lock);
 105         cli->cl_max_pages_per_rpc = val;
 106         client_obd_list_unlock(&cli->cl_loi_list_lock);
 107         LPROCFS_CLIMP_EXIT(dev);
 108         return count;
 109 }
 110
 111 static int osc_rd_max_rpcs_in_flight(char *page, char **start, off_t off,
 112                                      int count, int *eof, void *data)
 113 {
 114         struct obd_device *dev = data;
 115         struct client_obd *cli = &dev->u.cli;
 116         int rc;
 117
 118         client_obd_list_lock(&cli->cl_loi_list_lock);
 119         rc = snprintf(page, count, "%u\n", cli->cl_max_rpcs_in_flight);
 120         client_obd_list_unlock(&cli->cl_loi_list_lock);
 121         return rc;
 122 }
 123
 124 static int osc_wr_max_rpcs_in_flight(struct file *file, const char *buffer,
 125                                      unsigned long count, void *data)
 126 {
 127         struct obd_device *dev = data;
 128         struct client_obd *cli = &dev->u.cli;
 129         struct ptlrpc_request_pool *pool;
 130         int val, rc;
 131
 132         rc = lprocfs_write_helper(buffer, count, &val);
 133         if (rc)
 134                 return rc;
 135         if (val < 1 || val > OSC_MAX_RIF_MAX)
 136                 return -ERANGE;
 137
 138         LPROCFS_CLIMP_CHECK(dev);
 139         pool = cli->cl_import->imp_rq_pool;
 140         if (pool && val > cli->cl_max_rpcs_in_flight)
 141                 pool->prp_populate(pool, val-cli->cl_max_rpcs_in_flight);
 142
 143         client_obd_list_lock(&cli->cl_loi_list_lock);
 144         cli->cl_max_rpcs_in_flight = val;
 145         client_obd_list_unlock(&cli->cl_loi_list_lock);
 146
 147         LPROCFS_CLIMP_EXIT(dev);
 148         return count;
 149 }
 150
 151 static int osc_rd_max_dirty_mb(char *page, char **start, off_t off, int count,
 152                                int *eof, void *data)
 153 {
 154         struct obd_device *dev = data;
 155         struct client_obd *cli = &dev->u.cli;
 156         long val;
 157         int mult;
 158
 159         client_obd_list_lock(&cli->cl_loi_list_lock);
 160         val = cli->cl_dirty_max;
 161         client_obd_list_unlock(&cli->cl_loi_list_lock);
 162
 163         mult = 1 << 20;
 164         return lprocfs_read_frac_helper(page, count, val, mult);
 165 }
 166
 167 static int osc_wr_max_dirty_mb(struct file *file, const char *buffer,
 168                                unsigned long count, void *data)
 169 {
 170         struct obd_device *dev = data;
 171         struct client_obd *cli = &dev->u.cli;
 172         int pages_number, mult, rc;
 173
 174         mult = 1 << (20 - CFS_PAGE_SHIFT);
 175         rc = lprocfs_write_frac_helper(buffer, count, &pages_number, mult);
 176         if (rc)
 177                 return rc;
 178
 179         if (pages_number < 0 || 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_resendtime(char *page, char **start, off_t off, int count,
 307                              int *eof, void *data)
 308 {
 309         return snprintf(page, count, CFS_TIME_T,
 310                         cfs_duration_sec(atomic_read(&osc_resend_time)));
 311 }
 312
 313 static int osc_wr_resendtime(struct file *file, const char *buffer,
 314                              unsigned long count, void *data)
 315 {
 316         int val, rc;
 317
 318         rc = lprocfs_write_helper(buffer, count, &val);
 319         if (rc)
 320                 return rc;
 321
 322         if (val < 0)
 323                return -EINVAL;
 324
 325         atomic_set(&osc_resend_time, cfs_time_seconds(val));
 326
 327         return count;
 328 }
 329
 330 static struct lprocfs_vars lprocfs_obd_vars[] = {
 331         { "uuid",            lprocfs_rd_uuid,        0, 0 },
 332         { "ping",            0, lprocfs_wr_ping,        0 },
 333         { "connect_flags",   lprocfs_rd_connect_flags, 0, 0 },
 334         { "blocksize",       lprocfs_rd_blksize,     0, 0 },
 335         { "kbytestotal",     lprocfs_rd_kbytestotal, 0, 0 },
 336         { "kbytesfree",      lprocfs_rd_kbytesfree,  0, 0 },
 337         { "kbytesavail",     lprocfs_rd_kbytesavail, 0, 0 },
 338         { "filestotal",      lprocfs_rd_filestotal,  0, 0 },
 339         { "filesfree",       lprocfs_rd_filesfree,   0, 0 },
 340         //{ "filegroups",      lprocfs_rd_filegroups,  0, 0 },
 341         { "ost_server_uuid", lprocfs_rd_server_uuid, 0, 0 },
 342         { "ost_conn_uuid",   lprocfs_rd_conn_uuid, 0, 0 },
 343         { "active",          osc_rd_active,
 344                              osc_wr_active, 0 },
 345         { "max_pages_per_rpc", osc_rd_max_pages_per_rpc,
 346                                osc_wr_max_pages_per_rpc, 0 },
 347         { "max_rpcs_in_flight", osc_rd_max_rpcs_in_flight,
 348                                 osc_wr_max_rpcs_in_flight, 0 },
 349         { "max_dirty_mb",    osc_rd_max_dirty_mb, osc_wr_max_dirty_mb, 0 },
 350         { "cur_dirty_bytes", osc_rd_cur_dirty_bytes, 0, 0 },
 351         { "cur_grant_bytes", osc_rd_cur_grant_bytes, 0, 0 },
 352         { "create_count",    osc_rd_create_count, osc_wr_create_count, 0 },
 353         { "prealloc_next_id", osc_rd_prealloc_next_id, 0, 0 },
 354         { "prealloc_last_id", osc_rd_prealloc_last_id, 0, 0 },
 355         { "checksums",       osc_rd_checksum, osc_wr_checksum, 0 },
 356         { 0 }
 357 };
 358
 359 static struct lprocfs_vars lprocfs_module_vars[] = {
 360         { "num_refs",        lprocfs_rd_numrefs,     0, 0 },
 361         { "resend_timeout",  osc_rd_resendtime, osc_wr_resendtime, 0},
 362         { 0 }
 363 };
 364
 365 #define pct(a,b) (b ? a * 100 / b : 0)
 366
 367 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 368 {
 369         struct timeval now;
 370         struct obd_device *dev = seq->private;
 371         struct client_obd *cli = &dev->u.cli;
 372         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 373         int i;
 374
 375         do_gettimeofday(&now);
 376
 377         client_obd_list_lock(&cli->cl_loi_list_lock);
 378
 379         seq_printf(seq, "snapshot_time:         %lu.%lu (secs.usecs)\n",
 380                    now.tv_sec, now.tv_usec);
 381         seq_printf(seq, "read RPCs in flight:  %d\n",
 382                    cli->cl_r_in_flight);
 383         seq_printf(seq, "write RPCs in flight: %d\n",
 384                    cli->cl_w_in_flight);
 385         seq_printf(seq, "pending write pages:  %d\n",
 386                    cli->cl_pending_w_pages);
 387         seq_printf(seq, "pending read pages:   %d\n",
 388                    cli->cl_pending_r_pages);
 389
 390         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 391         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 392         seq_printf(seq, "       rpcs   %% cum %%\n");
 393
 394         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 395         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 396
 397         read_cum = 0;
 398         write_cum = 0;
 399         for (i = 0; i < OBD_HIST_MAX; i++) {
 400                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 401                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 402                 read_cum += r;
 403                 write_cum += w;
 404                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 405                                  1 << i, r, pct(r, read_tot),
 406                                  pct(read_cum, read_tot), w,
 407                                  pct(w, write_tot),
 408                                  pct(write_cum, write_tot));
 409                 if (read_cum == read_tot && write_cum == write_tot)
 410                         break;
 411         }
 412
 413         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 414         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 415         seq_printf(seq, "       rpcs   %% cum %%\n");
 416
 417         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 418         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 419
 420         read_cum = 0;
 421         write_cum = 0;
 422         for (i = 0; i < OBD_HIST_MAX; i++) {
 423                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 424                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 425                 read_cum += r;
 426                 write_cum += w;
 427                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 428                                  i, r, pct(r, read_tot),
 429                                  pct(read_cum, read_tot), w,
 430                                  pct(w, write_tot),
 431                                  pct(write_cum, write_tot));
 432                 if (read_cum == read_tot && write_cum == write_tot)
 433                         break;
 434         }
 435
 436         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 437         seq_printf(seq, "offset                rpcs   %% cum %% |");
 438         seq_printf(seq, "       rpcs   %% cum %%\n");
 439
 440         read_tot = lprocfs_oh_sum(&cli->cl_read_offset_hist);
 441         write_tot = lprocfs_oh_sum(&cli->cl_write_offset_hist);
 442
 443         read_cum = 0;
 444         write_cum = 0;
 445         for (i = 0; i < OBD_HIST_MAX; i++) {
 446                 unsigned long r = cli->cl_read_offset_hist.oh_buckets[i];
 447                 unsigned long w = cli->cl_write_offset_hist.oh_buckets[i];
 448                 read_cum += r;
 449                 write_cum += w;
 450                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 451                            (i == 0) ? 0 : 1 << (i - 1),
 452                            r, pct(r, read_tot), pct(read_cum, read_tot),
 453                            w, pct(w, write_tot), pct(write_cum, write_tot));
 454                 if (read_cum == read_tot && write_cum == write_tot)
 455                         break;
 456         }
 457
 458         client_obd_list_unlock(&cli->cl_loi_list_lock);
 459
 460         return 0;
 461 }
 462 #undef pct
 463
 464 static ssize_t osc_rpc_stats_seq_write(struct file *file, const char *buf,
 465                                        size_t len, loff_t *off)
 466 {
 467         struct seq_file *seq = file->private_data;
 468         struct obd_device *dev = seq->private;
 469         struct client_obd *cli = &dev->u.cli;
 470
 471         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 472         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 473         lprocfs_oh_clear(&cli->cl_read_page_hist);
 474         lprocfs_oh_clear(&cli->cl_write_page_hist);
 475         lprocfs_oh_clear(&cli->cl_read_offset_hist);
 476         lprocfs_oh_clear(&cli->cl_write_offset_hist);
 477
 478         return len;
 479 }
 480
 481 LPROC_SEQ_FOPS(osc_rpc_stats);
 482
 483 int lproc_osc_attach_seqstat(struct obd_device *dev)
 484 {
 485         return lprocfs_obd_seq_create(dev, "rpc_stats", 0444,
 486                                       &osc_rpc_stats_fops, dev);
 487 }
 488
 489 LPROCFS_INIT_VARS(osc, lprocfs_module_vars, lprocfs_obd_vars)
 490 #endif /* LPROCFS */
 491