lustre/mds/lproc_mds.c

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  *  Copyright (C) 2002 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 <linux/obd.h>
  32 #include <linux/obd_class.h>
  33 #include <linux/lprocfs_status.h>
  34 #include "mds_internal.h"
  35
  36 #ifdef LPROCFS
  37 static int lprocfs_mds_rd_mntdev(char *page, char **start, off_t off, int count,
  38                                  int *eof, void *data)
  39 {
  40         struct obd_device* obd = (struct obd_device *)data;
  41
  42         LASSERT(obd != NULL);
  43         LASSERT(obd->u.mds.mds_vfsmnt->mnt_devname);
  44         *eof = 1;
  45
  46         return snprintf(page, count, "%s\n",obd->u.mds.mds_vfsmnt->mnt_devname);
  47 }
  48
  49 static int lprocfs_mds_wr_evict_client(struct file *file, const char *buffer,
  50                                        unsigned long count, void *data)
  51 {
  52         struct obd_device *obd = data;
  53         struct mds_obd *mds = &obd->u.mds;
  54         char tmpbuf[sizeof(struct obd_uuid)];
  55         int rc;
  56
  57         sscanf(buffer, "%40s", tmpbuf);
  58
  59         if (strncmp(tmpbuf, "nid:", 4) != 0)
  60                 return lprocfs_wr_evict_client(file, buffer, count, data);
  61
  62         obd_export_evict_by_nid(obd, tmpbuf+4);
  63
  64         rc = obd_set_info(mds->mds_osc_exp, strlen("evict_by_nid"),
  65                           "evict_by_nid", strlen(tmpbuf + 4) + 1, tmpbuf + 4);
  66         if (rc)
  67                 CERROR("Failed to evict nid %s from OSTs: rc %d\n", tmpbuf + 4,
  68                        rc);
  69
  70         return count;
  71 }
  72
  73 static int lprocfs_wr_group_info(struct file *file, const char *buffer,
  74                                  unsigned long count, void *data)
  75 {
  76         struct obd_device *obd = data;
  77         struct mds_obd *mds = &obd->u.mds;
  78         struct mds_grp_downcall_data sparam, *param = &sparam;
  79         int size = 0, rc = count;
  80
  81         if (count < sizeof(param)) {
  82                 CERROR("%s: invalid data size %lu\n", obd->obd_name, count);
  83                 return count;
  84         }
  85
  86         if (copy_from_user(param, buffer, sizeof(*param)) ||
  87             param->mgd_magic != MDS_GRP_DOWNCALL_MAGIC) {
  88                 CERROR("%s: MDS group downcall bad params\n", obd->obd_name);
  89                 return count;
  90         }
  91
  92         if (param->mgd_ngroups > NGROUPS_MAX) {
  93                 CWARN("%s: uid %u groups %d more than maximum %d\n",
  94                       obd->obd_name, param->mgd_uid, param->mgd_ngroups,
  95                       NGROUPS_MAX);
  96                 param->mgd_ngroups = NGROUPS_MAX;
  97         }
  98
  99         if (param->mgd_ngroups > 0) {
 100                 size = offsetof(struct mds_grp_downcall_data,
 101                                 mgd_groups[param->mgd_ngroups]);
 102                 OBD_ALLOC(param, size);
 103                 if (!param) {
 104                         CERROR("%s: fail to alloc %d bytes for uid %u"
 105                                " with %d groups\n", obd->obd_name, size,
 106                                sparam.mgd_uid, sparam.mgd_ngroups);
 107                         param = &sparam;
 108                         param->mgd_ngroups = 0;
 109                 } else if (copy_from_user(param, buffer, size)) {
 110                         CERROR("%s: uid %u bad supplementary group data\n",
 111                                obd->obd_name, sparam.mgd_uid);
 112                         OBD_FREE(param, size);
 113                         param = &sparam;
 114                         param->mgd_ngroups = 0;
 115                 }
 116         }
 117         rc = upcall_cache_downcall(mds->mds_group_hash, param->mgd_err,
 118                                    param->mgd_uid, param->mgd_gid,
 119                                    param->mgd_ngroups, param->mgd_groups);
 120
 121         if (param && param != &sparam)
 122                 OBD_FREE(param, size);
 123
 124         return rc;
 125 }
 126
 127 static int lprocfs_rd_group_expire(char *page, char **start, off_t off,
 128                                    int count, int *eof, void *data)
 129 {
 130         struct obd_device *obd = data;
 131
 132         *eof = 1;
 133         return snprintf(page, count, "%lu\n",
 134                         obd->u.mds.mds_group_hash->uc_entry_expire / HZ);
 135 }
 136
 137 static int lprocfs_wr_group_expire(struct file *file, const char *buffer,
 138                                    unsigned long count, void *data)
 139 {
 140         struct obd_device *obd = data;
 141         int val, rc;
 142
 143         rc = lprocfs_write_helper(buffer, count, &val);
 144         if (rc)
 145                 return rc;
 146
 147         if (val > 5)
 148                 obd->u.mds.mds_group_hash->uc_entry_expire = val * HZ;
 149         else
 150                 CERROR("invalid expire time %u for group cache\n", val);
 151
 152         return count;
 153 }
 154
 155 static int lprocfs_rd_group_acquire_expire(char *page, char **start, off_t off,
 156                                            int count, int *eof, void *data)
 157 {
 158         struct obd_device *obd = data;
 159
 160         *eof = 1;
 161         return snprintf(page, count, "%lu\n",
 162                         obd->u.mds.mds_group_hash->uc_acquire_expire / HZ);
 163 }
 164
 165 static int lprocfs_wr_group_acquire_expire(struct file *file,const char *buffer,
 166                                            unsigned long count, void *data)
 167 {
 168         struct obd_device *obd = data;
 169         int val, rc = 0;
 170
 171         rc = lprocfs_write_helper(buffer, count, &val);
 172         if (rc)
 173                 return rc;
 174
 175         if (val > 2)
 176                 obd->u.mds.mds_group_hash->uc_acquire_expire = val * HZ;
 177
 178         return count;
 179 }
 180
 181 static int lprocfs_rd_group_upcall(char *page, char **start, off_t off,
 182                                    int count, int *eof, void *data)
 183 {
 184         struct obd_device *obd = data;
 185
 186         *eof = 1;
 187         return snprintf(page, count, "%s\n",
 188                         obd->u.mds.mds_group_hash->uc_upcall);
 189 }
 190
 191 static int lprocfs_wr_group_upcall(struct file *file, const char *buffer,
 192                                    unsigned long count, void *data)
 193 {
 194         struct obd_device *obd = data;
 195         struct upcall_cache *hash = obd->u.mds.mds_group_hash;
 196         char kernbuf[UC_CACHE_UPCALL_MAXPATH] = { '\0' };
 197
 198         if (count >= UC_CACHE_UPCALL_MAXPATH) {
 199                 CERROR("%s: group upcall too long\n", obd->obd_name);
 200                 return -EINVAL;
 201         }
 202
 203         if (copy_from_user(kernbuf, buffer,
 204                            min(count, UC_CACHE_UPCALL_MAXPATH - 1)))
 205                 return -EFAULT;
 206
 207         /* Remove any extraneous bits from the upcall (e.g. linefeeds) */
 208         sscanf(kernbuf, "%s", hash->uc_upcall);
 209
 210         if (strcmp(hash->uc_name, obd->obd_name) != 0)
 211                 CWARN("%s: write to upcall name %s for MDS %s\n",
 212                       obd->obd_name, hash->uc_upcall, obd->obd_name);
 213         CWARN("%s: group upcall set to %s\n", obd->obd_name, hash->uc_upcall);
 214
 215         return count;
 216 }
 217
 218 static int lprocfs_wr_group_flush(struct file *file, const char *buffer,
 219                                   unsigned long count, void *data)
 220 {
 221         struct obd_device *obd = data;
 222
 223         upcall_cache_flush_idle(obd->u.mds.mds_group_hash);
 224         return count;
 225 }
 226
 227 #ifdef HAVE_QUOTA_SUPPORT
 228 static int lprocfs_mds_rd_bunit(char *page, char **start, off_t off, int count,
 229                                 int *eof, void *data)
 230 {
 231         struct obd_device *obd = (struct obd_device *)data;
 232         LASSERT(obd != NULL);
 233
 234         return snprintf(page, count, "%lu\n",
 235                         obd->u.obt.obt_qctxt.lqc_bunit_sz);
 236 }
 237
 238 static int lprocfs_mds_rd_iunit(char *page, char **start, off_t off, int count,
 239                                 int *eof, void *data)
 240 {
 241         struct obd_device *obd = (struct obd_device *)data;
 242         LASSERT(obd != NULL);
 243
 244         return snprintf(page, count, "%lu\n",
 245                         obd->u.obt.obt_qctxt.lqc_iunit_sz);
 246 }
 247
 248 static int lprocfs_mds_wr_bunit(struct file *file, const char *buffer,
 249                                 unsigned long count, void *data)
 250 {
 251         struct obd_device *obd = (struct obd_device *)data;
 252         int val, rc;
 253         LASSERT(obd != NULL);
 254
 255         rc = lprocfs_write_helper(buffer, count, &val);
 256         if (rc)
 257                 return rc;
 258
 259         if (val % QUOTABLOCK_SIZE ||
 260             val <= obd->u.obt.obt_qctxt.lqc_btune_sz)
 261                 return -EINVAL;
 262
 263         obd->u.obt.obt_qctxt.lqc_bunit_sz = val;
 264         return count;
 265 }
 266
 267 static int lprocfs_mds_wr_iunit(struct file *file, const char *buffer,
 268                                 unsigned long count, void *data)
 269 {
 270         struct obd_device *obd = (struct obd_device *)data;
 271         int val, rc;
 272         LASSERT(obd != NULL);
 273
 274         rc = lprocfs_write_helper(buffer, count, &val);
 275         if (rc)
 276                 return rc;
 277
 278         if (val <= obd->u.obt.obt_qctxt.lqc_itune_sz)
 279                 return -EINVAL;
 280
 281         obd->u.obt.obt_qctxt.lqc_iunit_sz = val;
 282         return count;
 283 }
 284
 285 static int lprocfs_mds_rd_btune(char *page, char **start, off_t off, int count,
 286                                 int *eof, void *data)
 287 {
 288         struct obd_device *obd = (struct obd_device *)data;
 289         LASSERT(obd != NULL);
 290
 291         return snprintf(page, count, "%lu\n",
 292                         obd->u.obt.obt_qctxt.lqc_btune_sz);
 293 }
 294
 295 static int lprocfs_mds_rd_itune(char *page, char **start, off_t off, int count,
 296                                 int *eof, void *data)
 297 {
 298         struct obd_device *obd = (struct obd_device *)data;
 299         LASSERT(obd != NULL);
 300
 301         return snprintf(page, count, "%lu\n",
 302                         obd->u.obt.obt_qctxt.lqc_itune_sz);
 303 }
 304
 305 static int lprocfs_mds_wr_btune(struct file *file, const char *buffer,
 306                                 unsigned long count, void *data)
 307 {
 308         struct obd_device *obd = (struct obd_device *)data;
 309         int val, rc;
 310         LASSERT(obd != NULL);
 311
 312         rc = lprocfs_write_helper(buffer, count, &val);
 313         if (rc)
 314                 return rc;
 315
 316         if (val <= QUOTABLOCK_SIZE * MIN_QLIMIT || val % QUOTABLOCK_SIZE ||
 317             val >= obd->u.obt.obt_qctxt.lqc_bunit_sz)
 318                 return -EINVAL;
 319
 320         obd->u.obt.obt_qctxt.lqc_btune_sz = val;
 321         return count;
 322 }
 323
 324 static int lprocfs_mds_wr_itune(struct file *file, const char *buffer,
 325                                 unsigned long count, void *data)
 326 {
 327         struct obd_device *obd = (struct obd_device *)data;
 328         int val, rc;
 329         LASSERT(obd != NULL);
 330
 331         rc = lprocfs_write_helper(buffer, count, &val);
 332         if (rc)
 333                 return rc;
 334
 335         if (val <= MIN_QLIMIT ||
 336             val >= obd->u.obt.obt_qctxt.lqc_iunit_sz)
 337                 return -EINVAL;
 338
 339         obd->u.obt.obt_qctxt.lqc_itune_sz = val;
 340         return count;
 341 }
 342 #endif
 343
 344 static int lprocfs_wr_atime_diff(struct file *file, const char *buffer,
 345                                  unsigned long count, void *data)
 346 {
 347         struct obd_device *obd = data;
 348         struct mds_obd *mds = &obd->u.mds;
 349         char kernbuf[20], *end;
 350         unsigned long diff = 0;
 351
 352         if (count > (sizeof(kernbuf) - 1))
 353                 return -EINVAL;
 354
 355         if (copy_from_user(kernbuf, buffer, count))
 356                 return -EFAULT;
 357
 358         kernbuf[count] = '\0';
 359
 360         diff = simple_strtoul(kernbuf, &end, 0);
 361         if (kernbuf == end)
 362                 return -EINVAL;
 363
 364         mds->mds_atime_diff = diff;
 365         return count;
 366 }
 367
 368 static int lprocfs_rd_atime_diff(char *page, char **start, off_t off,
 369                                  int count, int *eof, void *data)
 370 {
 371         struct obd_device *obd = data;
 372         struct mds_obd *mds = &obd->u.mds;
 373
 374         *eof = 1;
 375         return snprintf(page, count, "%lu\n", mds->mds_atime_diff);
 376 }
 377
 378 struct lprocfs_vars lprocfs_mds_obd_vars[] = {
 379         { "uuid",            lprocfs_rd_uuid,        0, 0 },
 380         { "blocksize",       lprocfs_rd_blksize,     0, 0 },
 381         { "kbytestotal",     lprocfs_rd_kbytestotal, 0, 0 },
 382         { "kbytesfree",      lprocfs_rd_kbytesfree,  0, 0 },
 383         { "kbytesavail",     lprocfs_rd_kbytesavail, 0, 0 },
 384         { "filestotal",      lprocfs_rd_filestotal,  0, 0 },
 385         { "filesfree",       lprocfs_rd_filesfree,   0, 0 },
 386         { "fstype",          lprocfs_rd_fstype,      0, 0 },
 387         { "mntdev",          lprocfs_mds_rd_mntdev,  0, 0 },
 388         { "recovery_status", lprocfs_obd_rd_recovery_status, 0, 0 },
 389         { "evict_client",    0,                lprocfs_mds_wr_evict_client, 0 },
 390         { "num_exports",     lprocfs_rd_num_exports, 0, 0 },
 391 #ifdef HAVE_QUOTA_SUPPORT
 392         { "quota_bunit_sz",  lprocfs_mds_rd_bunit, lprocfs_mds_wr_bunit, 0 },
 393         { "quota_btune_sz",  lprocfs_mds_rd_btune, lprocfs_mds_wr_btune, 0 },
 394         { "quota_iunit_sz",  lprocfs_mds_rd_iunit, lprocfs_mds_wr_iunit, 0 },
 395         { "quota_itune_sz",  lprocfs_mds_rd_itune, lprocfs_mds_wr_itune, 0 },
 396 #endif
 397         { "group_expire_interval", lprocfs_rd_group_expire,
 398                              lprocfs_wr_group_expire, 0},
 399         { "group_acquire_expire", lprocfs_rd_group_acquire_expire,
 400                              lprocfs_wr_group_acquire_expire, 0},
 401         { "group_upcall",    lprocfs_rd_group_upcall,
 402                              lprocfs_wr_group_upcall, 0},
 403         { "group_flush",     0, lprocfs_wr_group_flush, 0},
 404         { "group_info",      0, lprocfs_wr_group_info, 0 },
 405         { "atime_diff",      lprocfs_rd_atime_diff, lprocfs_wr_atime_diff, 0 },
 406         { 0 }
 407 };
 408
 409 struct lprocfs_vars lprocfs_mds_module_vars[] = {
 410         { "num_refs",     lprocfs_rd_numrefs,     0, 0 },
 411         { 0 }
 412 };
 413
 414 struct lprocfs_vars lprocfs_mdt_obd_vars[] = {
 415         { "uuid",         lprocfs_rd_uuid,        0, 0 },
 416         { 0 }
 417 };
 418
 419 struct lprocfs_vars lprocfs_mdt_module_vars[] = {
 420         { "num_refs",     lprocfs_rd_numrefs,     0, 0 },
 421         { 0 }
 422 };
 423
 424 LPROCFS_INIT_VARS(mds, lprocfs_mds_module_vars, lprocfs_mds_obd_vars);
 425 LPROCFS_INIT_VARS(mdt, lprocfs_mdt_module_vars, lprocfs_mdt_obd_vars);
 426 #endif