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         spin_unlock(&cli->cl_loi_list_lock);
 138
 139         return count;
 140 }
 141
 142 int osc_rd_cur_dirty_bytes(char *page, char **start, off_t off, int count,
 143                            int *eof, void *data)
 144 {
 145         struct obd_device *dev = data;
 146         struct client_obd *cli = &dev->u.cli;
 147         int rc;
 148
 149         spin_lock(&cli->cl_loi_list_lock);
 150         rc = snprintf(page, count, LPU64"\n", cli->cl_dirty);
 151         spin_unlock(&cli->cl_loi_list_lock);
 152         return rc;
 153 }
 154
 155 int osc_rd_create_low_wm(char *page, char **start, off_t off, int count,
 156                          int *eof, void *data)
 157 {
 158         struct obd_device *obd = data;
 159         struct obd_export *exp;
 160
 161         if (obd == NULL || list_empty(&obd->obd_exports))
 162                 return 0;
 163
 164         spin_lock(&obd->obd_dev_lock);
 165         exp = list_entry(obd->obd_exports.next, struct obd_export,
 166                          exp_obd_chain);
 167         spin_unlock(&obd->obd_dev_lock);
 168
 169         return snprintf(page, count, "%d\n",
 170                         exp->exp_osc_data.oed_oscc.oscc_kick_barrier);
 171 }
 172
 173 int osc_wr_create_low_wm(struct file *file, const char *buffer,
 174                          unsigned long count, void *data)
 175 {
 176         struct obd_device *obd = data;
 177         struct obd_export *exp;
 178         int val, rc;
 179
 180         if (obd == NULL || list_empty(&obd->obd_exports))
 181                 return 0;
 182
 183         rc = lprocfs_write_helper(buffer, count, &val);
 184         if (rc)
 185                 return rc;
 186
 187         if (val < 0)
 188                 return -ERANGE;
 189
 190         spin_lock(&obd->obd_dev_lock);
 191         exp = list_entry(obd->obd_exports.next, struct obd_export,
 192                          exp_obd_chain);
 193         exp->exp_osc_data.oed_oscc.oscc_kick_barrier = val;
 194         spin_unlock(&obd->obd_dev_lock);
 195
 196         return count;
 197 }
 198
 199 int osc_rd_create_count(char *page, char **start, off_t off, int count,
 200                         int *eof, void *data)
 201 {
 202         struct obd_device *obd = data;
 203         struct obd_export *exp;
 204
 205         if (obd == NULL || list_empty(&obd->obd_exports))
 206                 return 0;
 207
 208         spin_lock(&obd->obd_dev_lock);
 209         exp = list_entry(obd->obd_exports.next, struct obd_export,
 210                          exp_obd_chain);
 211         spin_unlock(&obd->obd_dev_lock);
 212
 213         return snprintf(page, count, "%d\n",
 214                         exp->exp_osc_data.oed_oscc.oscc_grow_count);
 215 }
 216
 217 int osc_wr_create_count(struct file *file, const char *buffer,
 218                         unsigned long count, void *data)
 219 {
 220         struct obd_device *obd = data;
 221         struct obd_export *exp;
 222         int val, rc;
 223
 224         if (obd == NULL || list_empty(&obd->obd_exports))
 225                 return 0;
 226
 227         rc = lprocfs_write_helper(buffer, count, &val);
 228         if (rc)
 229                 return rc;
 230
 231         if (val < 0)
 232                 return -ERANGE;
 233
 234         spin_lock(&obd->obd_dev_lock);
 235         exp = list_entry(obd->obd_exports.next, struct obd_export,
 236                          exp_obd_chain);
 237         exp->exp_osc_data.oed_oscc.oscc_grow_count = val;
 238         spin_unlock(&obd->obd_dev_lock);
 239
 240         return count;
 241 }
 242
 243 int osc_rd_prealloc_next_id(char *page, char **start, off_t off, int count,
 244                             int *eof, void *data)
 245 {
 246         struct obd_device *obd = data;
 247         struct obd_export *exp;
 248
 249         if (obd == NULL || list_empty(&obd->obd_exports))
 250                 return 0;
 251
 252         spin_lock(&obd->obd_dev_lock);
 253         exp = list_entry(obd->obd_exports.next, struct obd_export,
 254                          exp_obd_chain);
 255         spin_unlock(&obd->obd_dev_lock);
 256
 257         return snprintf(page, count, LPU64"\n",
 258                         exp->exp_osc_data.oed_oscc.oscc_next_id);
 259 }
 260
 261 int osc_rd_prealloc_last_id(char *page, char **start, off_t off, int count,
 262                             int *eof, void *data)
 263 {
 264         struct obd_device *obd = data;
 265         struct obd_export *exp;
 266
 267         if (obd == NULL || list_empty(&obd->obd_exports))
 268                 return 0;
 269
 270         spin_lock(&obd->obd_dev_lock);
 271         exp = list_entry(obd->obd_exports.next, struct obd_export,
 272                          exp_obd_chain);
 273         spin_unlock(&obd->obd_dev_lock);
 274
 275         return snprintf(page, count, LPU64"\n",
 276                         exp->exp_osc_data.oed_oscc.oscc_last_id);
 277 }
 278
 279 static struct lprocfs_vars lprocfs_obd_vars[] = {
 280         { "uuid",            lprocfs_rd_uuid,        0, 0 },
 281         { "blocksize",       lprocfs_rd_blksize,     0, 0 },
 282         { "kbytestotal",     lprocfs_rd_kbytestotal, 0, 0 },
 283         { "kbytesfree",      lprocfs_rd_kbytesfree,  0, 0 },
 284         { "filestotal",      lprocfs_rd_filestotal,  0, 0 },
 285         { "filesfree",       lprocfs_rd_filesfree,   0, 0 },
 286         //{ "filegroups",      lprocfs_rd_filegroups,  0, 0 },
 287         { "ost_server_uuid", lprocfs_rd_server_uuid, 0, 0 },
 288         { "ost_conn_uuid",   lprocfs_rd_conn_uuid, 0, 0 },
 289         { "max_pages_per_rpc", osc_rd_max_pages_per_rpc,
 290                                osc_wr_max_pages_per_rpc, 0 },
 291         { "max_rpcs_in_flight", osc_rd_max_rpcs_in_flight,
 292                                 osc_wr_max_rpcs_in_flight, 0 },
 293         { "max_dirty_mb", osc_rd_max_dirty_mb, osc_wr_max_dirty_mb, 0 },
 294         { "cur_dirty_bytes", osc_rd_cur_dirty_bytes, 0, 0 },
 295         {"create_low_watermark", osc_rd_create_low_wm, osc_wr_create_low_wm, 0},
 296         { "create_count", osc_rd_create_count, osc_wr_create_count, 0 },
 297         { "prealloc_next_id", osc_rd_prealloc_next_id, 0, 0 },
 298         { "prealloc_last_id", osc_rd_prealloc_last_id, 0, 0 },
 299         { 0 }
 300 };
 301
 302 static struct lprocfs_vars lprocfs_module_vars[] = {
 303         { "num_refs",        lprocfs_rd_numrefs,     0, 0 },
 304         { 0 }
 305 };
 306
 307 #define pct(a,b) (b ? a * 100 / b : 0)
 308
 309 static int osc_rpc_stats_seq_show(struct seq_file *seq, void *v)
 310 {
 311         struct timeval now;
 312         struct obd_device *dev = seq->private;
 313         struct client_obd *cli = &dev->u.cli;
 314         unsigned long flags;
 315         unsigned long read_tot = 0, write_tot = 0, read_cum, write_cum;
 316         int i, rpcs, r, w;
 317
 318         do_gettimeofday(&now);
 319
 320         spin_lock_irqsave(&cli->cl_loi_list_lock, flags);
 321
 322         rpcs = cli->cl_brw_in_flight;
 323         r = cli->cl_pending_r_pages;
 324         w = cli->cl_pending_w_pages;
 325
 326         seq_printf(seq, "snapshot_time:         %lu:%lu (secs:usecs)\n",
 327                    now.tv_sec, now.tv_usec);
 328         seq_printf(seq, "RPCs in flight:        %d\n", rpcs);
 329         seq_printf(seq, "pending write pages:   %d\n", w);
 330         seq_printf(seq, "pending read pages:   %d\n", r);
 331
 332         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 333         seq_printf(seq, "pages per rpc         rpcs   %% cum %% |");
 334         seq_printf(seq, "       rpcs   %% cum %%\n");
 335
 336         read_tot = lprocfs_oh_sum(&cli->cl_read_page_hist);
 337         write_tot = lprocfs_oh_sum(&cli->cl_write_page_hist);
 338
 339         read_cum = 0;
 340         write_cum = 0;
 341         for (i = 0; i < OBD_HIST_MAX; i++) {
 342                 unsigned long r = cli->cl_read_page_hist.oh_buckets[i];
 343                 unsigned long w = cli->cl_write_page_hist.oh_buckets[i];
 344                 read_cum += r;
 345                 write_cum += w;
 346                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 347                                  1 << i, r, pct(r, read_tot),
 348                                  pct(read_cum, read_tot), w,
 349                                  pct(w, write_tot),
 350                                  pct(write_cum, write_tot));
 351                 if (read_cum == read_tot && write_cum == write_tot)
 352                         break;
 353         }
 354
 355         seq_printf(seq, "\n\t\t\tread\t\t\twrite\n");
 356         seq_printf(seq, "rpcs in flight        rpcs   %% cum %% |");
 357         seq_printf(seq, "       rpcs   %% cum %%\n");
 358
 359         read_tot = lprocfs_oh_sum(&cli->cl_read_rpc_hist);
 360         write_tot = lprocfs_oh_sum(&cli->cl_write_rpc_hist);
 361
 362         read_cum = 0;
 363         write_cum = 0;
 364         for (i = 0; i < OBD_HIST_MAX; i++) {
 365                 unsigned long r = cli->cl_read_rpc_hist.oh_buckets[i];
 366                 unsigned long w = cli->cl_write_rpc_hist.oh_buckets[i];
 367                 read_cum += r;
 368                 write_cum += w;
 369                 seq_printf(seq, "%d:\t\t%10lu %3lu %3lu   | %10lu %3lu %3lu\n",
 370                                  i, r, pct(r, read_tot),
 371                                  pct(read_cum, read_tot), w,
 372                                  pct(w, write_tot),
 373                                  pct(write_cum, write_tot));
 374                 if (read_cum == read_tot && write_cum == write_tot)
 375                         break;
 376         }
 377
 378         spin_unlock_irqrestore(&cli->cl_loi_list_lock, flags);
 379
 380         return 0;
 381 }
 382 #undef pct
 383
 384 static void *osc_rpc_stats_seq_start(struct seq_file *p, loff_t *pos)
 385 {
 386         if (*pos == 0)
 387                 return (void *)1;
 388         return NULL;
 389 }
 390 static void *osc_rpc_stats_seq_next(struct seq_file *p, void *v, loff_t *pos)
 391 {
 392         ++*pos;
 393         return NULL;
 394 }
 395 static void osc_rpc_stats_seq_stop(struct seq_file *p, void *v)
 396 {
 397 }
 398 struct seq_operations osc_rpc_stats_seq_sops = {
 399         .start = osc_rpc_stats_seq_start,
 400         .stop = osc_rpc_stats_seq_stop,
 401         .next = osc_rpc_stats_seq_next,
 402         .show = osc_rpc_stats_seq_show,
 403 };
 404
 405 static int osc_rpc_stats_seq_open(struct inode *inode, struct file *file)
 406 {
 407         struct proc_dir_entry *dp = inode->u.generic_ip;
 408         struct seq_file *seq;
 409         int rc;
 410
 411         rc = seq_open(file, &osc_rpc_stats_seq_sops);
 412         if (rc)
 413                 return rc;
 414         seq = file->private_data;
 415         seq->private = dp->data;
 416         return 0;
 417 }
 418
 419 static ssize_t osc_rpc_stats_seq_write(struct file *file, const char *buf,
 420                                        size_t len, loff_t *off)
 421 {
 422         struct seq_file *seq = file->private_data;
 423         struct obd_device *dev = seq->private;
 424         struct client_obd *cli = &dev->u.cli;
 425
 426         lprocfs_oh_clear(&cli->cl_read_rpc_hist);
 427         lprocfs_oh_clear(&cli->cl_write_rpc_hist);
 428         lprocfs_oh_clear(&cli->cl_read_page_hist);
 429         lprocfs_oh_clear(&cli->cl_write_page_hist);
 430
 431         return len;
 432 }
 433
 434 struct file_operations osc_rpc_stats_fops = {
 435         .open    = osc_rpc_stats_seq_open,
 436         .read    = seq_read,
 437         .write   = osc_rpc_stats_seq_write,
 438         .llseek  = seq_lseek,
 439         .release = seq_release,
 440 };
 441
 442 int lproc_osc_attach_seqstat(struct obd_device *dev)
 443 {
 444         return lprocfs_obd_seq_create(dev, "rpc_stats", 0444,
 445                                       &osc_rpc_stats_fops, dev);
 446 }
 447
 448
 449 #endif /* LPROCFS */
 450 LPROCFS_INIT_VARS(osc,lprocfs_module_vars, lprocfs_obd_vars)