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 Lustre, http://www.lustre.org.
   7  *
   8  *   Lustre is free software; you can redistribute it and/or
   9  *   modify it under the terms of version 2 of the GNU General Public
  10  *   License as published by the Free Software Foundation.
  11  *
  12  *   Lustre is distributed in the hope that it will be useful,
  13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *   GNU General Public License for more details.
  16  *
  17  *   You should have received a copy of the GNU General Public License
  18  *   along with Lustre; if not, write to the Free Software
  19  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  *
  21  */
  22 #define DEBUG_SUBSYSTEM S_CLASS
  23
  24 #include <linux/version.h>
  25 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
  26 #include <asm/statfs.h>
  27 #endif
  28 #include <linux/obd_class.h>
  29 #include <linux/lprocfs_status.h>
  30 #include <linux/seq_file.h>
  31 #include "osc_internal.h"
  32
  33 #ifndef LPROCFS
  34 static struct lprocfs_vars lprocfs_obd_vars[]  = { {0} };
  35 static struct lprocfs_vars lprocfs_module_vars[] = { {0} };
  36 #else
  37
  38 int osc_rd_max_pages_per_rpc(char *page, char **start, off_t off, int count,
  39                              int *eof, void *data)
  40 {
  41         struct obd_device *dev = data;
  42         struct client_obd *cli = &dev->u.cli;
  43         int rc;
  44
  45         spin_lock(&cli->cl_loi_list_lock);
  46         rc = snprintf(page, count, "%d\n", cli->cl_max_pages_per_rpc);
  47         spin_unlock(&cli->cl_loi_list_lock);
  48         return rc;
  49 }
  50
  51 int osc_wr_max_pages_per_rpc(struct file *file, const char *buffer,
  52                              unsigned long count, void *data)
  53 {
  54         struct obd_device *dev = data;
  55         struct client_obd *cli = &dev->u.cli;
  56         int val, rc;
  57
  58         rc = lprocfs_write_helper(buffer, count, &val);
  59         if (rc)
  60                 return rc;
  61
  62         if (val < 1 || val > PTL_MD_MAX_PAGES)
  63                 return -ERANGE;
  64
  65         spin_lock(&cli->cl_loi_list_lock);
  66         cli->cl_max_pages_per_rpc = val;
  67         spin_unlock(&cli->cl_loi_list_lock);
  68
  69         return count;
  70 }
  71
  72 int osc_rd_max_rpcs_in_flight(char *page, char **start, off_t off, int count,
  73                               int *eof, void *data)
  74 {
  75         struct obd_device *dev = data;
  76         struct client_obd *cli = &dev->u.cli;
  77         int rc;
  78
  79         spin_lock(&cli->cl_loi_list_lock);
  80         rc = snprintf(page, count, "%u\n", cli->cl_max_rpcs_in_flight);
  81         spin_unlock(&cli->cl_loi_list_lock);
  82         return rc;
  83 }
  84
  85 int osc_wr_max_rpcs_in_flight(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         int val, rc;
  91
  92         rc = lprocfs_write_helper(buffer, count, &val);
  93         if (rc)
  94                 return rc;
  95
  96         if (val < 1 || val > OSC_MAX_RIF_MAX)
  97                 return -ERANGE;
  98
  99         spin_lock(&cli->cl_loi_list_lock);
 100         cli->cl_max_rpcs_in_flight = val;
 101         spin_unlock(&cli->cl_loi_list_lock);
 102
 103         return count;
 104 }
 105
 106 int osc_rd_max_dirty_mb(char *page, char **start, off_t off, int count,
 107                         int *eof, void *data)
 108 {
 109         struct obd_device *dev = data;
 110         struct client_obd *cli = &dev->u.cli;
 111         int val;
 112         int rc;
 113
 114         spin_lock(&cli->cl_loi_list_lock);
 115         val = cli->cl_dirty_max >> 20;
 116         rc = snprintf(page, count, "%d\n", val);
 117         spin_unlock(&cli->cl_loi_list_lock);
 118         return rc;
 119 }
 120
 121 int osc_wr_max_dirty_mb(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         int val, rc;
 127
 128         rc = lprocfs_write_helper(buffer, count, &val);
 129         if (rc)
 130                 return rc;
 131
 132         if (val < 0 || val > OSC_MAX_DIRTY_MB_MAX)
 133                 return -ERANGE;
 134
 135         spin_lock(&cli->cl_loi_list_lock);
 136         cli->cl_dirty_max = (obd_count)val * 1024 * 1024;
 137         osc_wake_cache_waiters(cli);
 138         spin_unlock(&cli->cl_loi_list_lock);
 139
 140         return count;
 141 }
 142
 143 int osc_rd_cur_dirty_bytes(char *page, char **start, off_t off, int count,
 144                            int *eof, void *data)
 145 {
 146         struct obd_device *dev = data;
 147         struct client_obd *cli = &dev->u.cli;
 148         int rc;
 149
 150         spin_lock(&cli->cl_loi_list_lock);
 151         rc = snprintf(page, count, "%lu\n", cli->cl_dirty);
 152         spin_unlock(&cli->cl_loi_list_lock);
 153         return rc;
 154 }
 155
 156 int osc_rd_cur_grant_bytes(char *page, char **start, off_t off, int count,
 157                            int *eof, void *data)
 158 {
 159         struct obd_device *dev = data;
 160         struct client_obd *cli = &dev->u.cli;
 161         int rc;
 162
 163         spin_lock(&cli->cl_loi_list_lock);
 164         rc = snprintf(page, count, "%lu\n", cli->cl_avail_grant);
 165         spin_unlock(&cli->cl_loi_list_lock);
 166         return rc;
 167 }
 168
 169 int osc_rd_create_low_wm(char *page, char **start, off_t off, int count,
 170                          int *eof, void *data)
 171 {
 172         struct obd_device *obd = data;
 173         struct obd_export *exp;
 174
 175         if (obd == NULL || list_empty(&obd->obd_exports))
 176                 return 0;
 177
 178         spin_lock(&obd->obd_dev_lock);
 179         exp = list_entry(obd->obd_exports.next, struct obd_export,
 180                          exp_obd_chain);
 181         spin_unlock(&obd->obd_dev_lock);
 182
 183         return snprintf(page, count, "%d\n",
 184                         exp->exp_osc_data.oed_oscc.oscc_kick_barrier);
 185 }
 186
 187 int osc_wr_create_low_wm(struct file *file, const char *buffer,
 188                          unsigned long count, void *data)
 189 {
 190         struct obd_device *obd = data;
 191         struct obd_export *exp;
 192         int val, rc;
 193
 194         if (obd == NULL || list_empty(&obd->obd_exports))
 195                 return 0;
 196
 197         rc = lprocfs_write_helper(buffer, count, &val);
 198         if (rc)
 199                 return rc;
 200
 201         if (val < 0)
 202                 return -ERANGE;
 203
 204         spin_lock(&obd->obd_dev_lock);
 205         exp = list_entry(obd->obd_exports.next, struct obd_export,
 206                          exp_obd_chain);
 207         exp->exp_osc_data.oed_oscc.oscc_kick_barrier = val;
 208         spin_unlock(&obd->obd_dev_lock);
 209
 210         return count;
 211 }
 212
 213 int osc_rd_create_count(char *page, char **start, off_t off, int count,
 214                         int *eof, void *data)
 215 {
 216         struct obd_device *obd = data;
 217         struct obd_export *exp;
 218
 219         if (obd == NULL || list_empty(&obd->obd_exports))
 220                 return 0;
 221
 222         spin_lock(&obd->obd_dev_lock);
 223         exp = list_entry(obd->obd_exports.next, struct obd_export,
 224                          exp_obd_chain);
 225         spin_unlock(&obd->obd_dev_lock);
 226
 227         return snprintf(page, count, "%d\n",
 228                         exp->exp_osc_data.oed_oscc.oscc_grow_count);
 229 }
 230
 231 int osc_wr_create_count(struct file *file, const char *buffer,
 232                         unsigned long count, void *data)
 233 {
 234         struct obd_device *obd = data;
 235         struct obd_export *exp;
 236         int val, rc;
 237
 238         if (obd == NULL || list_empty(&obd->obd_exports))
 239                 return 0;
 240
 241         rc = lprocfs_write_helper(buffer, count, &val);
 242         if (rc)
 243                 return rc;
 244
 245         if (val < 0)
 246                 return -ERANGE;
 247
 248         spin_lock(&obd->obd_dev_lock);
 249         exp = list_entry(obd->obd_exports.next, struct obd_export,
 250                          exp_obd_chain);
 251         exp->exp_osc_data.oed_oscc.oscc_grow_count = val;
 252         spin_unlock(&obd->obd_dev_lock);
 253
 254         return count;
 255 }
 256
 257 int osc_rd_prealloc_next_id(char *page, char **start, off_t off, int count,
 258                             int *eof, void *data)
 259 {
 260         struct obd_device *obd = data;
 261         struct obd_export *exp;
 262
 263         if (obd == NULL || list_empty(&obd->obd_exports))
 264                 return 0;
 265
 266         spin_lock(&obd->obd_dev_lock);
 267         exp = list_entry(obd->obd_exports.next, struct obd_export,
 268                          exp_obd_chain);
 269         spin_unlock(&obd->obd_dev_lock);
 270
 271         return snprintf(page, count, LPU64"\n",
 272                         exp->exp_osc_data.oed_oscc.oscc_next_id);
 273 }
 274
 275 int osc_rd_prealloc_last_id(char *page, char **start, off_t off, int count,
 276                             int *eof, void *data)
 277 {
 278         struct obd_device *obd = data;
 279         struct obd_export *exp;
 280
 281         if (obd == NULL || list_empty(&obd->obd_exports))
 282                 return 0;
 283
 284         spin_lock(&obd->obd_dev_lock);
 285         exp = list_entry(obd->obd_exports.next, struct obd_export,
 286                          exp_obd_chain);
 287         spin_unlock(&obd->obd_dev_lock);
 288
 289         return snprintf(page, count, LPU64"\n",
 290                         exp->exp_osc_data.oed_oscc.oscc_last_id);
 291 }
 292
 293 static struct lprocfs_vars lprocfs_obd_vars[] = {
 294         { "uuid",            lprocfs_rd_uuid,        0, 0 },
 295         { "blocksize",       lprocfs_rd_blksize,     0, 0 },
 296         { "kbytestotal",     lprocfs_rd_kbytestotal, 0, 0 },
 297         { "kbytesfree",      lprocfs_rd_kbytesfree,  0, 0 },
 298         { "kbytesavail",     lprocfs_rd_kbytesavail, 0, 0 },
 299         { "filestotal",      lprocfs_rd_filestotal,  0, 0 },
 300         { "filesfree",       lprocfs_rd_filesfree,   0, 0 },
 301         //{ "filegroups",      lprocfs_rd_filegroups,  0, 0 },
 302         { "ost_server_uuid", lprocfs_rd_server_uuid, 0, 0 },
 303         { "ost_conn_uuid",   lprocfs_rd_conn_uuid, 0, 0 },
 304         { "max_pages_per_rpc", osc_rd_max_pages_per_rpc,
 305                                osc_wr_max_pages_per_rpc, 0 },
 306         { "max_rpcs_in_flight", osc_rd_max_rpcs_in_flight,
 307                                 osc_wr_max_rpcs_in_flight, 0 },
 308         { "max_dirty_mb", osc_rd_max_dirty_mb, osc_wr_max_dirty_mb, 0 },
 309         { "cur_dirty_bytes", osc_rd_cur_dirty_bytes, 0, 0 },
 310         { "cur_grant_bytes", osc_rd_cur_grant_bytes, 0, 0 },
 311         {"create_low_watermark", osc_rd_create_low_wm, osc_wr_create_low_wm, 0},
 312         { "create_count", osc_rd_create_count, osc_wr_create_count, 0 },
 313         { "prealloc_next_id", osc_rd_prealloc_next_id, 0, 0 },
 314         { "prealloc_last_id", osc_rd_prealloc_last_id, 0, 0 },
 315         { 0 }
 316 };
 317
 318 static struct lprocfs_vars lprocfs_module_vars[] = {
 319         { "num_refs",        lprocfs_rd_numrefs,     0, 0 },
 320         { 0 }
 321 };
 322
 323 #define pct(a,b) (b ? a * 100 / b : 0)
 324
 325 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 326 {
 327         struct timeval now;
 328         struct obd_device *dev = seq->private;
 329         struct client_obd *cli = &dev->u.cli;
 330         unsigned long flags;
 331         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 332         int i, rpcs, r, w;
 333
 334         do_gettimeofday(&now);
 335
 336         spin_lock_irqsave(&cli->cl_loi_list_lock, flags);
 337
 338         rpcs = cli->cl_brw_in_flight;
 339         r = cli->cl_pending_r_pages;
 340         w = cli->cl_pending_w_pages;
 341
 342         seq_printf(seq, "snapshot_time:         %lu:%lu (secs:usecs)\n",
 343                    now.tv_sec, now.tv_usec);
 344         seq_printf(seq, "RPCs in flight:        %d\n", rpcs);
 345         seq_printf(seq, "pending write pages:   %d\n", w);
 346         seq_printf(seq, "pending read pages:   %d\n", r);
 347
 348         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 349         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 350         seq_printf(seq, "       rpcs   %% cum %%\n");
 351
 352         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 353         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 354
 355         read_cum = 0;
 356         write_cum = 0;
 357         for (i = 0; i < OBD_HIST_MAX; i++) {
 358                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 359                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 360                 read_cum += r;
 361                 write_cum += w;
 362                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 363                                  1 << i, r, pct(r, read_tot),
 364                                  pct(read_cum, read_tot), w,
 365                                  pct(w, write_tot),
 366                                  pct(write_cum, write_tot));
 367                 if (read_cum == read_tot && write_cum == write_tot)
 368                         break;
 369         }
 370
 371         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 372         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 373         seq_printf(seq, "       rpcs   %% cum %%\n");
 374
 375         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 376         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 377
 378         read_cum = 0;
 379         write_cum = 0;
 380         for (i = 0; i < OBD_HIST_MAX; i++) {
 381                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 382                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 383                 read_cum += r;
 384                 write_cum += w;
 385                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 386                                  i, r, pct(r, read_tot),
 387                                  pct(read_cum, read_tot), w,
 388                                  pct(w, write_tot),
 389                                  pct(write_cum, write_tot));
 390                 if (read_cum == read_tot && write_cum == write_tot)
 391                         break;
 392         }
 393
 394         spin_unlock_irqrestore(&cli->cl_loi_list_lock, flags);
 395
 396         return 0;
 397 }
 398 #undef pct
 399
 400 static void *osc_rpc_stats_seq_start(struct seq_file *p, loff_t *pos)
 401 {
 402         if (*pos == 0)
 403                 return (void *)1;
 404         return NULL;
 405 }
 406 static void *osc_rpc_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
 407 {
 408         ++*pos;
 409         return NULL;
 410 }
 411 static void osc_rpc_stats_seq_stop(struct seq_file *p, void *v)
 412 {
 413 }
 414 struct seq_operations osc_rpc_stats_seq_sops = {
 415         .start = osc_rpc_stats_seq_start,
 416         .stop = osc_rpc_stats_seq_stop,
 417         .next = osc_rpc_stats_seq_next,
 418         .show = osc_rpc_stats_seq_show,
 419 };
 420
 421 static int osc_rpc_stats_seq_open(struct inode *inode, struct file *file)
 422 {
 423         struct proc_dir_entry *dp = PDE(inode);
 424         struct seq_file *seq;
 425         int rc;
 426
 427         rc = seq_open(file, &osc_rpc_stats_seq_sops);
 428         if (rc)
 429                 return rc;
 430         seq = file->private_data;
 431         seq->private = dp->data;
 432         return 0;
 433 }
 434
 435 static ssize_t osc_rpc_stats_seq_write(struct file *file, const char *buf,
 436                                        size_t len, loff_t *off)
 437 {
 438         struct seq_file *seq = file->private_data;
 439         struct obd_device *dev = seq->private;
 440         struct client_obd *cli = &dev->u.cli;
 441
 442         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 443         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 444         lprocfs_oh_clear(&cli->cl_read_page_hist);
 445         lprocfs_oh_clear(&cli->cl_write_page_hist);
 446
 447         return len;
 448 }
 449
 450 struct file_operations osc_rpc_stats_fops = {
 451         .open    = osc_rpc_stats_seq_open,
 452         .read    = seq_read,
 453         .write   = osc_rpc_stats_seq_write,
 454         .llseek  = seq_lseek,
 455         .release = seq_release,
 456 };
 457
 458 int lproc_osc_attach_seqstat(struct obd_device *dev)
 459 {
 460         return lprocfs_obd_seq_create(dev, "rpc_stats", 0444,
 461                                       &osc_rpc_stats_fops, dev);
 462 }
 463
 464
 465 #endif /* LPROCFS */
 466 LPROCFS_INIT_VARS(osc,lprocfs_module_vars, lprocfs_obd_vars)