lustre/mdt/mdt_mds.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 only,
   8  * as published by the Free Software Foundation.
   9
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License version 2 for more details.  A copy is
  14  * included in the COPYING file that accompanied this code.
  15
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2013, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  *
  31  * lustre/mdt/mdt_mds.c
  32  *
  33  * Lustre Metadata Service Layer
  34  *
  35  * Author: Di Wang <di.wang@whamcloud.com>
  36  **/
  37
  38 #define DEBUG_SUBSYSTEM S_MDS
  39
  40 #include <linux/module.h>
  41
  42 #include <obd_support.h>
  43 /* struct ptlrpc_request */
  44 #include <lustre_net.h>
  45 /* struct obd_export */
  46 #include <lustre_export.h>
  47 /* struct obd_device */
  48 #include <obd.h>
  49 /* lu2dt_dev() */
  50 #include <dt_object.h>
  51 #include <lustre_mds.h>
  52 #include <lustre_mdt.h>
  53 #include "mdt_internal.h"
  54 #include <lustre_quota.h>
  55 #include <lustre_acl.h>
  56 #include <lustre_param.h>
  57
  58 struct mds_device {
  59         /* super-class */
  60         struct md_device           mds_md_dev;
  61         struct ptlrpc_service     *mds_regular_service;
  62         struct ptlrpc_service     *mds_readpage_service;
  63         struct ptlrpc_service     *mds_out_service;
  64         struct ptlrpc_service     *mds_setattr_service;
  65         struct ptlrpc_service     *mds_mdsc_service;
  66         struct ptlrpc_service     *mds_mdss_service;
  67         struct ptlrpc_service     *mds_fld_service;
  68 };
  69
  70 /*
  71  *  * Initialized in mdt_mod_init().
  72  *   */
  73 static unsigned long mdt_num_threads;
  74 CFS_MODULE_PARM(mdt_num_threads, "ul", ulong, 0444,
  75                 "number of MDS service threads to start "
  76                 "(deprecated in favor of mds_num_threads)");
  77
  78 static unsigned long mds_num_threads;
  79 CFS_MODULE_PARM(mds_num_threads, "ul", ulong, 0444,
  80                 "number of MDS service threads to start");
  81
  82 static char *mds_num_cpts;
  83 CFS_MODULE_PARM(mds_num_cpts, "c", charp, 0444,
  84                 "CPU partitions MDS threads should run on");
  85
  86 static unsigned long mds_rdpg_num_threads;
  87 CFS_MODULE_PARM(mds_rdpg_num_threads, "ul", ulong, 0444,
  88                 "number of MDS readpage service threads to start");
  89
  90 static char *mds_rdpg_num_cpts;
  91 CFS_MODULE_PARM(mds_rdpg_num_cpts, "c", charp, 0444,
  92                 "CPU partitions MDS readpage threads should run on");
  93
  94 /* NB: these two should be removed along with setattr service in the future */
  95 static unsigned long mds_attr_num_threads;
  96 CFS_MODULE_PARM(mds_attr_num_threads, "ul", ulong, 0444,
  97                 "number of MDS setattr service threads to start");
  98
  99 static char *mds_attr_num_cpts;
 100 CFS_MODULE_PARM(mds_attr_num_cpts, "c", charp, 0444,
 101                 "CPU partitions MDS setattr threads should run on");
 102
 103 #define DEFINE_RPC_HANDLER(base, flags, opc, fn, fmt)                   \
 104 [opc - base] = {                                                        \
 105         .mh_name        = #opc,                                         \
 106         .mh_fail_id     = OBD_FAIL_ ## opc ## _NET,                     \
 107         .mh_opc         = opc,                                          \
 108         .mh_flags       = flags,                                        \
 109         .mh_act         = fn,                                           \
 110         .mh_fmt         = fmt                                           \
 111 }
 112
 113 /* Request with a format known in advance */
 114 #define DEF_MDT_HDL(flags, name, fn)                                    \
 115         DEFINE_RPC_HANDLER(MDS_GETATTR, flags, name, fn, &RQF_ ## name)
 116
 117 /* Request with a format we do not yet know */
 118 #define DEF_MDT_HDL_VAR(flags, name, fn)                                \
 119         DEFINE_RPC_HANDLER(MDS_GETATTR, flags, name, fn, NULL)
 120
 121 /* Map one non-standard request format handler.  This should probably get
 122  * a common OBD_SET_INFO RPC opcode instead of this mismatch. */
 123 #define RQF_MDS_SET_INFO RQF_OBD_SET_INFO
 124
 125 static struct mdt_handler mdt_mds_ops[] = {
 126 DEF_MDT_HDL(0,                          MDS_CONNECT,      mdt_connect),
 127 DEF_MDT_HDL(0,                          MDS_DISCONNECT,   mdt_disconnect),
 128 DEF_MDT_HDL(0,                          MDS_SET_INFO,     mdt_set_info),
 129 DEF_MDT_HDL(0,                          MDS_GET_INFO,     mdt_get_info),
 130 DEF_MDT_HDL(0           | HABEO_REFERO, MDS_GETSTATUS,    mdt_getstatus),
 131 DEF_MDT_HDL(HABEO_CORPUS,               MDS_GETATTR,      mdt_getattr),
 132 DEF_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_GETATTR_NAME, mdt_getattr_name),
 133 DEF_MDT_HDL(HABEO_CORPUS,               MDS_GETXATTR,     mdt_getxattr),
 134 DEF_MDT_HDL(0           | HABEO_REFERO, MDS_STATFS,       mdt_statfs),
 135 DEF_MDT_HDL(0           | MUTABOR,      MDS_REINT,        mdt_reint),
 136 DEF_MDT_HDL(HABEO_CORPUS,               MDS_CLOSE,        mdt_close),
 137 DEF_MDT_HDL(HABEO_CORPUS,               MDS_DONE_WRITING, mdt_done_writing),
 138 DEF_MDT_HDL(0           | HABEO_REFERO, MDS_PIN,          mdt_pin),
 139 DEF_MDT_HDL_VAR(0,                      MDS_SYNC,         mdt_sync),
 140 DEF_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_IS_SUBDIR,    mdt_is_subdir),
 141 DEF_MDT_HDL(0,                          MDS_QUOTACHECK,   mdt_quotacheck),
 142 DEF_MDT_HDL(0,                          MDS_QUOTACTL,     mdt_quotactl),
 143 DEF_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_PROGRESS, mdt_hsm_progress),
 144 DEF_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_CT_REGISTER,
 145                                                 mdt_hsm_ct_register),
 146 DEF_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_CT_UNREGISTER,
 147                                                 mdt_hsm_ct_unregister),
 148 DEF_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_STATE_GET,
 149                                                 mdt_hsm_state_get),
 150 DEF_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_STATE_SET,
 151                                                 mdt_hsm_state_set),
 152 DEF_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_ACTION, mdt_hsm_action),
 153 DEF_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_REQUEST, mdt_hsm_request),
 154 DEF_MDT_HDL(HABEO_CORPUS|HABEO_REFERO,  MDS_SWAP_LAYOUTS, mdt_swap_layouts)
 155 };
 156
 157 #define DEF_OBD_HDL(flags, name, fn)                                    \
 158         DEFINE_RPC_HANDLER(OBD_PING, flags, name, fn, NULL)
 159
 160 static struct mdt_handler mdt_obd_ops[] = {
 161 DEF_OBD_HDL(0,                          OBD_PING,         mdt_obd_ping),
 162 DEF_OBD_HDL(0,                          OBD_LOG_CANCEL,   mdt_obd_log_cancel),
 163 DEF_OBD_HDL(0,                          OBD_QC_CALLBACK,  mdt_obd_qc_callback),
 164 DEF_OBD_HDL(0,                          OBD_IDX_READ,     mdt_obd_idx_read)
 165 };
 166
 167 #define DEF_DLM_HDL_VAR(flags, name, fn)                                \
 168         DEFINE_RPC_HANDLER(LDLM_ENQUEUE, flags, name, fn, NULL)
 169 #define DEF_DLM_HDL(flags, name, fn)                                    \
 170         DEFINE_RPC_HANDLER(LDLM_ENQUEUE, flags, name, fn, &RQF_ ## name)
 171
 172 static struct mdt_handler mdt_dlm_ops[] = {
 173 DEF_DLM_HDL    (HABEO_CLAVIS,           LDLM_ENQUEUE,     mdt_enqueue),
 174 DEF_DLM_HDL_VAR(HABEO_CLAVIS,           LDLM_CONVERT,     mdt_convert),
 175 DEF_DLM_HDL_VAR(0,                      LDLM_BL_CALLBACK, mdt_bl_callback),
 176 DEF_DLM_HDL_VAR(0,                      LDLM_CP_CALLBACK, mdt_cp_callback)
 177 };
 178
 179 #define DEF_LLOG_HDL(flags, name, fn)                                   \
 180         DEFINE_RPC_HANDLER(LLOG_ORIGIN_HANDLE_CREATE, flags, name, fn, NULL)
 181
 182 static struct mdt_handler mdt_llog_ops[] = {
 183 DEF_LLOG_HDL(0,         LLOG_ORIGIN_HANDLE_CREATE,        mdt_llog_create),
 184 DEF_LLOG_HDL(0,         LLOG_ORIGIN_HANDLE_NEXT_BLOCK,    mdt_llog_next_block),
 185 DEF_LLOG_HDL(0,         LLOG_ORIGIN_HANDLE_READ_HEADER,   mdt_llog_read_header),
 186 DEF_LLOG_HDL(0,         LLOG_ORIGIN_HANDLE_WRITE_REC,     NULL),
 187 DEF_LLOG_HDL(0,         LLOG_ORIGIN_HANDLE_CLOSE,         NULL),
 188 DEF_LLOG_HDL(0,         LLOG_ORIGIN_CONNECT,              NULL),
 189 DEF_LLOG_HDL(0,         LLOG_CATINFO,                     NULL),
 190 DEF_LLOG_HDL(0,         LLOG_ORIGIN_HANDLE_PREV_BLOCK,    mdt_llog_prev_block),
 191 DEF_LLOG_HDL(0,         LLOG_ORIGIN_HANDLE_DESTROY,       mdt_llog_destroy),
 192 };
 193
 194 #define DEF_SEC_HDL(flags, name, fn)                                    \
 195         DEFINE_RPC_HANDLER(SEC_CTX_INIT, flags, name, fn, NULL)
 196
 197 static struct mdt_handler mdt_sec_ctx_ops[] = {
 198 DEF_SEC_HDL(0,                          SEC_CTX_INIT,     mdt_sec_ctx_handle),
 199 DEF_SEC_HDL(0,                          SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
 200 DEF_SEC_HDL(0,                          SEC_CTX_FINI,     mdt_sec_ctx_handle)
 201 };
 202
 203 #define DEF_QUOTA_HDL(flags, name, fn)                          \
 204         DEFINE_RPC_HANDLER(QUOTA_DQACQ, flags, name, fn, &RQF_ ## name)
 205
 206 static struct mdt_handler mdt_quota_ops[] = {
 207 DEF_QUOTA_HDL(HABEO_REFERO,             QUOTA_DQACQ,      mdt_quota_dqacq),
 208 };
 209
 210 struct mdt_opc_slice mdt_regular_handlers[] = {
 211         {
 212                 .mos_opc_start  = MDS_GETATTR,
 213                 .mos_opc_end    = MDS_LAST_OPC,
 214                 .mos_hs         = mdt_mds_ops
 215         },
 216         {
 217                 .mos_opc_start  = OBD_PING,
 218                 .mos_opc_end    = OBD_LAST_OPC,
 219                 .mos_hs         = mdt_obd_ops
 220         },
 221         {
 222                 .mos_opc_start  = LDLM_ENQUEUE,
 223                 .mos_opc_end    = LDLM_LAST_OPC,
 224                 .mos_hs         = mdt_dlm_ops
 225         },
 226         {
 227                 .mos_opc_start  = LLOG_ORIGIN_HANDLE_CREATE,
 228                 .mos_opc_end    = LLOG_LAST_OPC,
 229                 .mos_hs         = mdt_llog_ops
 230         },
 231         {
 232                 .mos_opc_start  = SEC_CTX_INIT,
 233                 .mos_opc_end    = SEC_LAST_OPC,
 234                 .mos_hs         = mdt_sec_ctx_ops
 235         },
 236         {
 237                 .mos_opc_start  = QUOTA_DQACQ,
 238                 .mos_opc_end    = QUOTA_LAST_OPC,
 239                 .mos_hs         = mdt_quota_ops
 240         },
 241         {
 242                 .mos_hs         = NULL
 243         }
 244 };
 245
 246 /* Readpage/readdir handlers */
 247 static struct mdt_handler mdt_readpage_ops[] = {
 248 DEF_MDT_HDL(0,                  MDS_CONNECT,  mdt_connect),
 249 DEF_MDT_HDL(HABEO_CORPUS | HABEO_REFERO, MDS_READPAGE, mdt_readpage),
 250 /* XXX: this is ugly and should be fixed one day, see mdc_close() for
 251  * detailed comments. --umka */
 252 DEF_MDT_HDL(HABEO_CORPUS,               MDS_CLOSE,        mdt_close),
 253 DEF_MDT_HDL(HABEO_CORPUS,               MDS_DONE_WRITING, mdt_done_writing),
 254 };
 255
 256 static struct mdt_opc_slice mdt_readpage_handlers[] = {
 257         {
 258                 .mos_opc_start = MDS_GETATTR,
 259                 .mos_opc_end   = MDS_LAST_OPC,
 260                 .mos_hs = mdt_readpage_ops
 261         },
 262         {
 263                 .mos_opc_start = OBD_FIRST_OPC,
 264                 .mos_opc_end   = OBD_LAST_OPC,
 265                 .mos_hs = mdt_obd_ops
 266         },
 267         {
 268                 .mos_hs = NULL
 269         }
 270 };
 271
 272 /* Sequence service handlers */
 273 #define DEF_SEQ_HDL(flags, name, fn)                                    \
 274         DEFINE_RPC_HANDLER(SEQ_QUERY, flags, name, fn, &RQF_ ## name)
 275
 276 static struct mdt_handler mdt_seq_ops[] = {
 277 DEF_SEQ_HDL(0,                          SEQ_QUERY,        (void *)seq_query),
 278 };
 279
 280 struct mdt_opc_slice mdt_seq_handlers[] = {
 281         {
 282                 .mos_opc_start = SEQ_QUERY,
 283                 .mos_opc_end   = SEQ_LAST_OPC,
 284                 .mos_hs = mdt_seq_ops
 285         },
 286         {
 287                 .mos_hs = NULL
 288         }
 289 };
 290
 291 /* FID Location Database handlers */
 292 #define DEF_FLD_HDL(flags, name, fn)                                    \
 293         DEFINE_RPC_HANDLER(FLD_QUERY, flags, name, fn, &RQF_ ## name)
 294
 295 static struct mdt_handler mdt_fld_ops[] = {
 296 DEF_FLD_HDL(0,                          FLD_QUERY,        (void *)fld_query),
 297 };
 298
 299 struct mdt_opc_slice mdt_fld_handlers[] = {
 300         {
 301                 .mos_opc_start = FLD_QUERY,
 302                 .mos_opc_end   = FLD_LAST_OPC,
 303                 .mos_hs = mdt_fld_ops
 304         },
 305         {
 306                 .mos_hs = NULL
 307         }
 308 };
 309
 310 /* Request with a format known in advance */
 311 #define DEF_UPDATE_HDL(flags, name, fn)                                 \
 312         DEFINE_RPC_HANDLER(UPDATE_OBJ, flags, name, fn, &RQF_ ## name)
 313
 314 #define target_handler mdt_handler
 315 static struct target_handler out_ops[] = {
 316         DEF_UPDATE_HDL(MUTABOR,         UPDATE_OBJ,     out_handle),
 317 };
 318
 319 static struct mdt_opc_slice update_handlers[] = {
 320         {
 321                 .mos_opc_start = MDS_GETATTR,
 322                 .mos_opc_end   = MDS_LAST_OPC,
 323                 .mos_hs        = mdt_mds_ops
 324         },
 325         {
 326                 .mos_opc_start = OBD_PING,
 327                 .mos_opc_end   = OBD_LAST_OPC,
 328                 .mos_hs        = mdt_obd_ops
 329         },
 330         {
 331                 .mos_opc_start = LDLM_ENQUEUE,
 332                 .mos_opc_end   = LDLM_LAST_OPC,
 333                 .mos_hs        = mdt_dlm_ops
 334         },
 335         {
 336                 .mos_opc_start = SEC_CTX_INIT,
 337                 .mos_opc_end   = SEC_LAST_OPC,
 338                 .mos_hs        = mdt_sec_ctx_ops
 339         },
 340         {
 341                 .mos_opc_start = UPDATE_OBJ,
 342                 .mos_opc_end   = UPDATE_LAST_OPC,
 343                 .mos_hs        = out_ops
 344         },
 345         {
 346                 .mos_hs        = NULL
 347         }
 348 };
 349
 350 static int mds_regular_handle(struct ptlrpc_request *req)
 351 {
 352         return mdt_handle_common(req, mdt_regular_handlers);
 353 }
 354
 355 static int mds_readpage_handle(struct ptlrpc_request *req)
 356 {
 357         return mdt_handle_common(req, mdt_readpage_handlers);
 358 }
 359
 360 static int mds_mdsc_handle(struct ptlrpc_request *req)
 361 {
 362         return mdt_handle_common(req, mdt_seq_handlers);
 363 }
 364
 365 static int mdt_out_handle(struct ptlrpc_request *req)
 366 {
 367         return mdt_handle_common(req, update_handlers);
 368 }
 369
 370 static int mds_mdss_handle(struct ptlrpc_request *req)
 371 {
 372         return mdt_handle_common(req, mdt_seq_handlers);
 373 }
 374
 375 static int mds_fld_handle(struct ptlrpc_request *req)
 376 {
 377         return mdt_handle_common(req, mdt_fld_handlers);
 378 }
 379
 380 /* device init/fini methods */
 381 static void mds_stop_ptlrpc_service(struct mds_device *m)
 382 {
 383         ENTRY;
 384         if (m->mds_regular_service != NULL) {
 385                 ptlrpc_unregister_service(m->mds_regular_service);
 386                 m->mds_regular_service = NULL;
 387         }
 388         if (m->mds_readpage_service != NULL) {
 389                 ptlrpc_unregister_service(m->mds_readpage_service);
 390                 m->mds_readpage_service = NULL;
 391         }
 392         if (m->mds_out_service != NULL) {
 393                 ptlrpc_unregister_service(m->mds_out_service);
 394                 m->mds_out_service = NULL;
 395         }
 396         if (m->mds_setattr_service != NULL) {
 397                 ptlrpc_unregister_service(m->mds_setattr_service);
 398                 m->mds_setattr_service = NULL;
 399         }
 400         if (m->mds_mdsc_service != NULL) {
 401                 ptlrpc_unregister_service(m->mds_mdsc_service);
 402                 m->mds_mdsc_service = NULL;
 403         }
 404         if (m->mds_mdss_service != NULL) {
 405                 ptlrpc_unregister_service(m->mds_mdss_service);
 406                 m->mds_mdss_service = NULL;
 407         }
 408         if (m->mds_fld_service != NULL) {
 409                 ptlrpc_unregister_service(m->mds_fld_service);
 410                 m->mds_fld_service = NULL;
 411         }
 412         EXIT;
 413 }
 414
 415 static int mds_start_ptlrpc_service(struct mds_device *m)
 416 {
 417         static struct ptlrpc_service_conf conf;
 418         struct obd_device *obd = m->mds_md_dev.md_lu_dev.ld_obd;
 419         cfs_proc_dir_entry_t *procfs_entry;
 420         int rc = 0;
 421         ENTRY;
 422
 423         procfs_entry = obd->obd_proc_entry;
 424         LASSERT(procfs_entry != NULL);
 425
 426         conf = (typeof(conf)) {
 427                 .psc_name               = LUSTRE_MDT_NAME,
 428                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 429                 .psc_buf                = {
 430                         .bc_nbufs               = MDS_NBUFS,
 431                         .bc_buf_size            = MDS_REG_BUFSIZE,
 432                         .bc_req_max_size        = MDS_REG_MAXREQSIZE,
 433                         .bc_rep_max_size        = MDS_REG_MAXREPSIZE,
 434                         .bc_req_portal          = MDS_REQUEST_PORTAL,
 435                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 436                 },
 437                 /*
 438                  * We'd like to have a mechanism to set this on a per-device
 439                  * basis, but alas...
 440                  */
 441                 .psc_thr                = {
 442                         .tc_thr_name            = LUSTRE_MDT_NAME,
 443                         .tc_thr_factor          = MDS_THR_FACTOR,
 444                         .tc_nthrs_init          = MDS_NTHRS_INIT,
 445                         .tc_nthrs_base          = MDS_NTHRS_BASE,
 446                         .tc_nthrs_max           = MDS_NTHRS_MAX,
 447                         .tc_nthrs_user          = mds_num_threads,
 448                         .tc_cpu_affinity        = 1,
 449                         .tc_ctx_tags            = LCT_MD_THREAD,
 450                 },
 451                 .psc_cpt                = {
 452                         .cc_pattern             = mds_num_cpts,
 453                 },
 454                 .psc_ops                = {
 455                         .so_req_handler         = mds_regular_handle,
 456                         .so_req_printer         = target_print_req,
 457                         .so_hpreq_handler       = ptlrpc_hpreq_handler,
 458                 },
 459         };
 460         m->mds_regular_service = ptlrpc_register_service(&conf, procfs_entry);
 461         if (IS_ERR(m->mds_regular_service)) {
 462                 rc = PTR_ERR(m->mds_regular_service);
 463                 CERROR("failed to start regular mdt service: %d\n", rc);
 464                 m->mds_regular_service = NULL;
 465
 466                 RETURN(rc);
 467         }
 468
 469         /*
 470          * readpage service configuration. Parameters have to be adjusted,
 471          * ideally.
 472          */
 473         memset(&conf, 0, sizeof(conf));
 474         conf = (typeof(conf)) {
 475                 .psc_name               = LUSTRE_MDT_NAME "_readpage",
 476                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 477                 .psc_buf                = {
 478                         .bc_nbufs               = MDS_NBUFS,
 479                         .bc_buf_size            = MDS_BUFSIZE,
 480                         .bc_req_max_size        = MDS_MAXREQSIZE,
 481                         .bc_rep_max_size        = MDS_MAXREPSIZE,
 482                         .bc_req_portal          = MDS_READPAGE_PORTAL,
 483                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 484                 },
 485                 .psc_thr                = {
 486                         .tc_thr_name            = LUSTRE_MDT_NAME "_rdpg",
 487                         .tc_thr_factor          = MDS_RDPG_THR_FACTOR,
 488                         .tc_nthrs_init          = MDS_RDPG_NTHRS_INIT,
 489                         .tc_nthrs_base          = MDS_RDPG_NTHRS_BASE,
 490                         .tc_nthrs_max           = MDS_RDPG_NTHRS_MAX,
 491                         .tc_nthrs_user          = mds_rdpg_num_threads,
 492                         .tc_cpu_affinity        = 1,
 493                         .tc_ctx_tags            = LCT_MD_THREAD,
 494                 },
 495                 .psc_cpt                = {
 496                         .cc_pattern             = mds_rdpg_num_cpts,
 497                 },
 498                 .psc_ops                = {
 499                         .so_req_handler         = mds_readpage_handle,
 500                         .so_req_printer         = target_print_req,
 501                 },
 502         };
 503         m->mds_readpage_service = ptlrpc_register_service(&conf, procfs_entry);
 504         if (IS_ERR(m->mds_readpage_service)) {
 505                 rc = PTR_ERR(m->mds_readpage_service);
 506                 CERROR("failed to start readpage service: %d\n", rc);
 507                 m->mds_readpage_service = NULL;
 508
 509                 GOTO(err_mds_svc, rc);
 510         }
 511
 512         /*
 513          * setattr service configuration.
 514          *
 515          * XXX To keep the compatibility with old client(< 2.2), we need to
 516          * preserve this portal for a certain time, it should be removed
 517          * eventually. LU-617.
 518          */
 519         memset(&conf, 0, sizeof(conf));
 520         conf = (typeof(conf)) {
 521                 .psc_name               = LUSTRE_MDT_NAME "_setattr",
 522                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 523                 .psc_buf                = {
 524                         .bc_nbufs               = MDS_NBUFS,
 525                         .bc_buf_size            = MDS_BUFSIZE,
 526                         .bc_req_max_size        = MDS_MAXREQSIZE,
 527                         .bc_rep_max_size        = MDS_LOV_MAXREPSIZE,
 528                         .bc_req_portal          = MDS_SETATTR_PORTAL,
 529                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 530                 },
 531                 .psc_thr                = {
 532                         .tc_thr_name            = LUSTRE_MDT_NAME "_attr",
 533                         .tc_thr_factor          = MDS_SETA_THR_FACTOR,
 534                         .tc_nthrs_init          = MDS_SETA_NTHRS_INIT,
 535                         .tc_nthrs_base          = MDS_SETA_NTHRS_BASE,
 536                         .tc_nthrs_max           = MDS_SETA_NTHRS_MAX,
 537                         .tc_nthrs_user          = mds_attr_num_threads,
 538                         .tc_cpu_affinity        = 1,
 539                         .tc_ctx_tags            = LCT_MD_THREAD,
 540                 },
 541                 .psc_cpt                = {
 542                         .cc_pattern             = mds_attr_num_cpts,
 543                 },
 544                 .psc_ops                = {
 545                         .so_req_handler         = mds_regular_handle,
 546                         .so_req_printer         = target_print_req,
 547                         .so_hpreq_handler       = NULL,
 548                 },
 549         };
 550         m->mds_setattr_service = ptlrpc_register_service(&conf, procfs_entry);
 551         if (IS_ERR(m->mds_setattr_service)) {
 552                 rc = PTR_ERR(m->mds_setattr_service);
 553                 CERROR("failed to start setattr service: %d\n", rc);
 554                 m->mds_setattr_service = NULL;
 555
 556                 GOTO(err_mds_svc, rc);
 557         }
 558
 559         /* Object update service */
 560         conf = (typeof(conf)) {
 561                 .psc_name               = LUSTRE_MDT_NAME "_out",
 562                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 563                 .psc_buf                = {
 564                         .bc_nbufs               = MDS_NBUFS,
 565                         .bc_buf_size            = MDS_OUT_BUFSIZE,
 566                         .bc_req_max_size        = MDS_OUT_MAXREQSIZE,
 567                         .bc_rep_max_size        = MDS_OUT_MAXREPSIZE,
 568                         .bc_req_portal          = MDS_MDS_PORTAL,
 569                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 570                 },
 571                 /*
 572                  * We'd like to have a mechanism to set this on a per-device
 573                  * basis, but alas...
 574                  */
 575                 .psc_thr                = {
 576                         .tc_thr_name            = LUSTRE_MDT_NAME "_out",
 577                         .tc_thr_factor          = MDS_THR_FACTOR,
 578                         .tc_nthrs_init          = MDS_NTHRS_INIT,
 579                         .tc_nthrs_base          = MDS_NTHRS_BASE,
 580                         .tc_nthrs_max           = MDS_NTHRS_MAX,
 581                         .tc_nthrs_user          = mds_num_threads,
 582                         .tc_cpu_affinity        = 1,
 583                         .tc_ctx_tags            = LCT_MD_THREAD,
 584                 },
 585                 .psc_cpt                = {
 586                         .cc_pattern             = mds_num_cpts,
 587                 },
 588                 .psc_ops                = {
 589                         .so_req_handler         = mdt_out_handle,
 590                         .so_req_printer         = target_print_req,
 591                         .so_hpreq_handler       = NULL,
 592                 },
 593         };
 594         m->mds_out_service = ptlrpc_register_service(&conf, procfs_entry);
 595         if (IS_ERR(m->mds_out_service)) {
 596                 rc = PTR_ERR(m->mds_out_service);
 597                 CERROR("failed to start out service: %d\n", rc);
 598                 m->mds_out_service = NULL;
 599                 GOTO(err_mds_svc, rc);
 600         }
 601
 602         /*
 603          * sequence controller service configuration
 604          */
 605         memset(&conf, 0, sizeof(conf));
 606         conf = (typeof(conf)) {
 607                 .psc_name               = LUSTRE_MDT_NAME "_seqs",
 608                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 609                 .psc_buf                = {
 610                         .bc_nbufs               = MDS_NBUFS,
 611                         .bc_buf_size            = SEQ_BUFSIZE,
 612                         .bc_req_max_size        = SEQ_MAXREQSIZE,
 613                         .bc_rep_max_size        = SEQ_MAXREPSIZE,
 614                         .bc_req_portal          = SEQ_CONTROLLER_PORTAL,
 615                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 616                 },
 617                 .psc_thr                = {
 618                         .tc_thr_name            = LUSTRE_MDT_NAME "_seqs",
 619                         .tc_nthrs_init          = MDS_OTHR_NTHRS_INIT,
 620                         .tc_nthrs_max           = MDS_OTHR_NTHRS_MAX,
 621                         .tc_ctx_tags            = LCT_MD_THREAD,
 622                 },
 623                 .psc_ops                = {
 624                         .so_req_handler         = mds_mdsc_handle,
 625                         .so_req_printer         = target_print_req,
 626                         .so_hpreq_handler       = NULL,
 627                 },
 628         };
 629         m->mds_mdsc_service = ptlrpc_register_service(&conf, procfs_entry);
 630         if (IS_ERR(m->mds_mdsc_service)) {
 631                 rc = PTR_ERR(m->mds_mdsc_service);
 632                 CERROR("failed to start seq controller service: %d\n", rc);
 633                 m->mds_mdsc_service = NULL;
 634
 635                 GOTO(err_mds_svc, rc);
 636         }
 637
 638         /*
 639          * metadata sequence server service configuration
 640          */
 641         memset(&conf, 0, sizeof(conf));
 642         conf = (typeof(conf)) {
 643                 .psc_name               = LUSTRE_MDT_NAME "_seqm",
 644                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 645                 .psc_buf                = {
 646                         .bc_nbufs               = MDS_NBUFS,
 647                         .bc_buf_size            = SEQ_BUFSIZE,
 648                         .bc_req_max_size        = SEQ_MAXREQSIZE,
 649                         .bc_rep_max_size        = SEQ_MAXREPSIZE,
 650                         .bc_req_portal          = SEQ_METADATA_PORTAL,
 651                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 652                 },
 653                 .psc_thr                = {
 654                         .tc_thr_name            = LUSTRE_MDT_NAME "_seqm",
 655                         .tc_nthrs_init          = MDS_OTHR_NTHRS_INIT,
 656                         .tc_nthrs_max           = MDS_OTHR_NTHRS_MAX,
 657                         .tc_ctx_tags            = LCT_MD_THREAD | LCT_DT_THREAD
 658                 },
 659                 .psc_ops                = {
 660                         .so_req_handler         = mds_mdss_handle,
 661                         .so_req_printer         = target_print_req,
 662                         .so_hpreq_handler       = NULL,
 663                 },
 664         };
 665         m->mds_mdss_service = ptlrpc_register_service(&conf, procfs_entry);
 666         if (IS_ERR(m->mds_mdss_service)) {
 667                 rc = PTR_ERR(m->mds_mdss_service);
 668                 CERROR("failed to start metadata seq server service: %d\n", rc);
 669                 m->mds_mdss_service = NULL;
 670
 671                 GOTO(err_mds_svc, rc);
 672         }
 673
 674         /* FLD service start */
 675         memset(&conf, 0, sizeof(conf));
 676         conf = (typeof(conf)) {
 677                 .psc_name            = LUSTRE_MDT_NAME "_fld",
 678                 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
 679                 .psc_buf                = {
 680                         .bc_nbufs               = MDS_NBUFS,
 681                         .bc_buf_size            = FLD_BUFSIZE,
 682                         .bc_req_max_size        = FLD_MAXREQSIZE,
 683                         .bc_rep_max_size        = FLD_MAXREPSIZE,
 684                         .bc_req_portal          = FLD_REQUEST_PORTAL,
 685                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 686                 },
 687                 .psc_thr                = {
 688                         .tc_thr_name            = LUSTRE_MDT_NAME "_fld",
 689                         .tc_nthrs_init          = MDS_OTHR_NTHRS_INIT,
 690                         .tc_nthrs_max           = MDS_OTHR_NTHRS_MAX,
 691                         .tc_ctx_tags            = LCT_DT_THREAD | LCT_MD_THREAD
 692                 },
 693                 .psc_ops                = {
 694                         .so_req_handler         = mds_fld_handle,
 695                         .so_req_printer         = target_print_req,
 696                         .so_hpreq_handler       = NULL,
 697                 },
 698         };
 699         m->mds_fld_service = ptlrpc_register_service(&conf, procfs_entry);
 700         if (IS_ERR(m->mds_fld_service)) {
 701                 rc = PTR_ERR(m->mds_fld_service);
 702                 CERROR("failed to start fld service: %d\n", rc);
 703                 m->mds_fld_service = NULL;
 704
 705                 GOTO(err_mds_svc, rc);
 706         }
 707
 708         EXIT;
 709 err_mds_svc:
 710         if (rc)
 711                 mds_stop_ptlrpc_service(m);
 712
 713         return rc;
 714 }
 715
 716 static inline struct mds_device *mds_dev(struct lu_device *d)
 717 {
 718         return container_of0(d, struct mds_device, mds_md_dev.md_lu_dev);
 719 }
 720
 721 static struct lu_device *mds_device_fini(const struct lu_env *env,
 722                                          struct lu_device *d)
 723 {
 724         struct mds_device *m = mds_dev(d);
 725         struct obd_device *obd = d->ld_obd;
 726         ENTRY;
 727
 728         mds_stop_ptlrpc_service(m);
 729         lprocfs_obd_cleanup(obd);
 730         RETURN(NULL);
 731 }
 732
 733 static struct lu_device *mds_device_free(const struct lu_env *env,
 734                                          struct lu_device *d)
 735 {
 736         struct mds_device *m = mds_dev(d);
 737         ENTRY;
 738
 739         md_device_fini(&m->mds_md_dev);
 740         OBD_FREE_PTR(m);
 741         RETURN(NULL);
 742 }
 743
 744 static struct lu_device *mds_device_alloc(const struct lu_env *env,
 745                                           struct lu_device_type *t,
 746                                           struct lustre_cfg *cfg)
 747 {
 748         struct mds_device        *m;
 749         struct obd_device        *obd;
 750         struct lu_device          *l;
 751         int rc;
 752
 753         OBD_ALLOC_PTR(m);
 754         if (m == NULL)
 755                 return ERR_PTR(-ENOMEM);
 756
 757         md_device_init(&m->mds_md_dev, t);
 758         l = &m->mds_md_dev.md_lu_dev;
 759
 760         obd = class_name2obd(lustre_cfg_string(cfg, 0));
 761         LASSERT(obd != NULL);
 762
 763         l->ld_obd = obd;
 764         /* set this lu_device to obd, because error handling need it */
 765         obd->obd_lu_dev = l;
 766
 767         rc = lprocfs_obd_setup(obd, lprocfs_mds_obd_vars);
 768         if (rc != 0) {
 769                 mds_device_free(env, l);
 770                 l = ERR_PTR(rc);
 771                 return l;
 772         }
 773
 774         rc = mds_start_ptlrpc_service(m);
 775
 776         if (rc != 0) {
 777                 mds_device_free(env, l);
 778                 l = ERR_PTR(rc);
 779                 return l;
 780         }
 781
 782         return l;
 783 }
 784
 785 /* type constructor/destructor: mdt_type_init, mdt_type_fini */
 786 LU_TYPE_INIT_FINI(mds, &mdt_thread_key);
 787
 788 static struct lu_device_type_operations mds_device_type_ops = {
 789         .ldto_init = mds_type_init,
 790         .ldto_fini = mds_type_fini,
 791
 792         .ldto_start = mds_type_start,
 793         .ldto_stop  = mds_type_stop,
 794
 795         .ldto_device_alloc = mds_device_alloc,
 796         .ldto_device_free  = mds_device_free,
 797         .ldto_device_fini  = mds_device_fini
 798 };
 799
 800 static struct lu_device_type mds_device_type = {
 801         .ldt_tags     = LU_DEVICE_MD,
 802         .ldt_name     = LUSTRE_MDS_NAME,
 803         .ldt_ops      = &mds_device_type_ops,
 804         .ldt_ctx_tags = LCT_MD_THREAD
 805 };
 806
 807 static struct obd_ops mds_obd_device_ops = {
 808         .o_owner           = THIS_MODULE,
 809 };
 810
 811 int mds_mod_init(void)
 812 {
 813         int rc;
 814
 815         if (mdt_num_threads != 0 && mds_num_threads == 0) {
 816                 LCONSOLE_INFO("mdt_num_threads module parameter is deprecated, "
 817                               "use mds_num_threads instead or unset both for "
 818                               "dynamic thread startup\n");
 819                 mds_num_threads = mdt_num_threads;
 820         }
 821
 822         rc = class_register_type(&mds_obd_device_ops, NULL,
 823                                  lprocfs_mds_module_vars, LUSTRE_MDS_NAME,
 824                                  &mds_device_type);
 825         return rc;
 826 }
 827
 828 void mds_mod_exit(void)
 829 {
 830         class_unregister_type(LUSTRE_MDS_NAME);
 831 }