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) 2011, 2012 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 #include <lustre_fsfilt.h>
  58
  59 struct mds_device {
  60         /* super-class */
  61         struct md_device           mds_md_dev;
  62         struct ptlrpc_service     *mds_regular_service;
  63         struct ptlrpc_service     *mds_readpage_service;
  64         struct ptlrpc_service     *mds_out_service;
  65         struct ptlrpc_service     *mds_setattr_service;
  66         struct ptlrpc_service     *mds_mdsc_service;
  67         struct ptlrpc_service     *mds_mdss_service;
  68         struct ptlrpc_service     *mds_fld_service;
  69 };
  70
  71 /*
  72  *  * Initialized in mdt_mod_init().
  73  *   */
  74 static unsigned long mdt_num_threads;
  75 CFS_MODULE_PARM(mdt_num_threads, "ul", ulong, 0444,
  76                 "number of MDS service threads to start "
  77                 "(deprecated in favor of mds_num_threads)");
  78
  79 static unsigned long mds_num_threads;
  80 CFS_MODULE_PARM(mds_num_threads, "ul", ulong, 0444,
  81                 "number of MDS service threads to start");
  82
  83 static char *mds_num_cpts;
  84 CFS_MODULE_PARM(mds_num_cpts, "c", charp, 0444,
  85                 "CPU partitions MDS threads should run on");
  86
  87 static unsigned long mds_rdpg_num_threads;
  88 CFS_MODULE_PARM(mds_rdpg_num_threads, "ul", ulong, 0444,
  89                 "number of MDS readpage service threads to start");
  90
  91 static char *mds_rdpg_num_cpts;
  92 CFS_MODULE_PARM(mds_rdpg_num_cpts, "c", charp, 0444,
  93                 "CPU partitions MDS readpage threads should run on");
  94
  95 /* NB: these two should be removed along with setattr service in the future */
  96 static unsigned long mds_attr_num_threads;
  97 CFS_MODULE_PARM(mds_attr_num_threads, "ul", ulong, 0444,
  98                 "number of MDS setattr service threads to start");
  99
 100 static char *mds_attr_num_cpts;
 101 CFS_MODULE_PARM(mds_attr_num_cpts, "c", charp, 0444,
 102                 "CPU partitions MDS setattr threads should run on");
 103
 104 #define DEFINE_RPC_HANDLER(base, flags, opc, fn, fmt)                   \
 105 [opc - base] = {                                                        \
 106         .mh_name        = #opc,                                         \
 107         .mh_fail_id     = OBD_FAIL_ ## opc ## _NET,                     \
 108         .mh_opc         = opc,                                          \
 109         .mh_flags       = flags,                                        \
 110         .mh_act         = fn,                                           \
 111         .mh_fmt         = fmt                                           \
 112 }
 113
 114 /* Request with a format known in advance */
 115 #define DEF_MDT_HDL(flags, name, fn)                                    \
 116         DEFINE_RPC_HANDLER(MDS_GETATTR, flags, name, fn, &RQF_ ## name)
 117
 118 /* Request with a format we do not yet know */
 119 #define DEF_MDT_HDL_VAR(flags, name, fn)                                \
 120         DEFINE_RPC_HANDLER(MDS_GETATTR, flags, name, fn, NULL)
 121
 122 /* Map one non-standard request format handler.  This should probably get
 123  * a common OBD_SET_INFO RPC opcode instead of this mismatch. */
 124 #define RQF_MDS_SET_INFO RQF_OBD_SET_INFO
 125
 126 static struct mdt_handler mdt_mds_ops[] = {
 127 DEF_MDT_HDL(0,                          MDS_CONNECT,      mdt_connect),
 128 DEF_MDT_HDL(0,                          MDS_DISCONNECT,   mdt_disconnect),
 129 DEF_MDT_HDL(0,                          MDS_SET_INFO,     mdt_set_info),
 130 DEF_MDT_HDL(0,                          MDS_GET_INFO,     mdt_get_info),
 131 DEF_MDT_HDL(0           | HABEO_REFERO, MDS_GETSTATUS,    mdt_getstatus),
 132 DEF_MDT_HDL(HABEO_CORPUS,               MDS_GETATTR,      mdt_getattr),
 133 DEF_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_GETATTR_NAME, mdt_getattr_name),
 134 DEF_MDT_HDL(HABEO_CORPUS,               MDS_GETXATTR,     mdt_getxattr),
 135 DEF_MDT_HDL(0           | HABEO_REFERO, MDS_STATFS,       mdt_statfs),
 136 DEF_MDT_HDL(0           | MUTABOR,      MDS_REINT,        mdt_reint),
 137 DEF_MDT_HDL(HABEO_CORPUS,               MDS_CLOSE,        mdt_close),
 138 DEF_MDT_HDL(HABEO_CORPUS,               MDS_DONE_WRITING, mdt_done_writing),
 139 DEF_MDT_HDL(0           | HABEO_REFERO, MDS_PIN,          mdt_pin),
 140 DEF_MDT_HDL_VAR(0,                      MDS_SYNC,         mdt_sync),
 141 DEF_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_IS_SUBDIR,    mdt_is_subdir),
 142 DEF_MDT_HDL(0,                          MDS_QUOTACHECK,   mdt_quotacheck),
 143 DEF_MDT_HDL(0,                          MDS_QUOTACTL,     mdt_quotactl),
 144 DEF_MDT_HDL(0           | HABEO_REFERO, MDS_HSM_PROGRESS, mdt_hsm_progress),
 145 DEF_MDT_HDL(0           | HABEO_REFERO, MDS_HSM_CT_REGISTER,
 146                                                 mdt_hsm_ct_register),
 147 DEF_MDT_HDL(0           | HABEO_REFERO, MDS_HSM_CT_UNREGISTER,
 148                                                 mdt_hsm_ct_unregister),
 149 DEF_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_STATE_GET,
 150                                                 mdt_hsm_state_get),
 151 DEF_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_STATE_SET,
 152                                                 mdt_hsm_state_set),
 153 DEF_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_HSM_ACTION, mdt_hsm_action),
 154 DEF_MDT_HDL(0           | HABEO_REFERO, MDS_HSM_REQUEST, mdt_hsm_request),
 155 DEF_MDT_HDL(HABEO_CORPUS|HABEO_REFERO,  MDS_SWAP_LAYOUTS, mdt_swap_layouts)
 156 };
 157
 158 #define DEF_OBD_HDL(flags, name, fn)                                    \
 159         DEFINE_RPC_HANDLER(OBD_PING, flags, name, fn, NULL)
 160
 161 static struct mdt_handler mdt_obd_ops[] = {
 162 DEF_OBD_HDL(0,                          OBD_PING,         mdt_obd_ping),
 163 DEF_OBD_HDL(0,                          OBD_LOG_CANCEL,   mdt_obd_log_cancel),
 164 DEF_OBD_HDL(0,                          OBD_QC_CALLBACK,  mdt_obd_qc_callback),
 165 DEF_OBD_HDL(0,                          OBD_IDX_READ,     mdt_obd_idx_read)
 166 };
 167
 168 #define DEF_DLM_HDL_VAR(flags, name, fn)                                \
 169         DEFINE_RPC_HANDLER(LDLM_ENQUEUE, flags, name, fn, NULL)
 170 #define DEF_DLM_HDL(flags, name, fn)                                    \
 171         DEFINE_RPC_HANDLER(LDLM_ENQUEUE, flags, name, fn, &RQF_ ## name)
 172
 173 static struct mdt_handler mdt_dlm_ops[] = {
 174 DEF_DLM_HDL    (HABEO_CLAVIS,           LDLM_ENQUEUE,     mdt_enqueue),
 175 DEF_DLM_HDL_VAR(HABEO_CLAVIS,           LDLM_CONVERT,     mdt_convert),
 176 DEF_DLM_HDL_VAR(0,                      LDLM_BL_CALLBACK, mdt_bl_callback),
 177 DEF_DLM_HDL_VAR(0,                      LDLM_CP_CALLBACK, mdt_cp_callback)
 178 };
 179
 180 #define DEF_LLOG_HDL(flags, name, fn)                                   \
 181         DEFINE_RPC_HANDLER(LLOG_ORIGIN_HANDLE_CREATE, flags, name, fn, NULL)
 182
 183 static struct mdt_handler mdt_llog_ops[] = {
 184 DEF_LLOG_HDL(0,         LLOG_ORIGIN_HANDLE_CREATE,        mdt_llog_create),
 185 DEF_LLOG_HDL(0,         LLOG_ORIGIN_HANDLE_NEXT_BLOCK,    mdt_llog_next_block),
 186 DEF_LLOG_HDL(0,         LLOG_ORIGIN_HANDLE_READ_HEADER,   mdt_llog_read_header),
 187 DEF_LLOG_HDL(0,         LLOG_ORIGIN_HANDLE_WRITE_REC,     NULL),
 188 DEF_LLOG_HDL(0,         LLOG_ORIGIN_HANDLE_CLOSE,         NULL),
 189 DEF_LLOG_HDL(0,         LLOG_ORIGIN_CONNECT,              NULL),
 190 DEF_LLOG_HDL(0,         LLOG_CATINFO,                     NULL),
 191 DEF_LLOG_HDL(0,         LLOG_ORIGIN_HANDLE_PREV_BLOCK,    mdt_llog_prev_block),
 192 DEF_LLOG_HDL(0,         LLOG_ORIGIN_HANDLE_DESTROY,       mdt_llog_destroy),
 193 };
 194
 195 #define DEF_SEC_HDL(flags, name, fn)                                    \
 196         DEFINE_RPC_HANDLER(SEC_CTX_INIT, flags, name, fn, NULL)
 197
 198 static struct mdt_handler mdt_sec_ctx_ops[] = {
 199 DEF_SEC_HDL(0,                          SEC_CTX_INIT,     mdt_sec_ctx_handle),
 200 DEF_SEC_HDL(0,                          SEC_CTX_INIT_CONT,mdt_sec_ctx_handle),
 201 DEF_SEC_HDL(0,                          SEC_CTX_FINI,     mdt_sec_ctx_handle)
 202 };
 203
 204 #define DEF_QUOTA_HDL(flags, name, fn)                          \
 205         DEFINE_RPC_HANDLER(QUOTA_DQACQ, flags, name, fn, &RQF_ ## name)
 206
 207 static struct mdt_handler mdt_quota_ops[] = {
 208 DEF_QUOTA_HDL(HABEO_REFERO,             QUOTA_DQACQ,      mdt_quota_dqacq),
 209 };
 210
 211 struct mdt_opc_slice mdt_regular_handlers[] = {
 212         {
 213                 .mos_opc_start  = MDS_GETATTR,
 214                 .mos_opc_end    = MDS_LAST_OPC,
 215                 .mos_hs         = mdt_mds_ops
 216         },
 217         {
 218                 .mos_opc_start  = OBD_PING,
 219                 .mos_opc_end    = OBD_LAST_OPC,
 220                 .mos_hs         = mdt_obd_ops
 221         },
 222         {
 223                 .mos_opc_start  = LDLM_ENQUEUE,
 224                 .mos_opc_end    = LDLM_LAST_OPC,
 225                 .mos_hs         = mdt_dlm_ops
 226         },
 227         {
 228                 .mos_opc_start  = LLOG_ORIGIN_HANDLE_CREATE,
 229                 .mos_opc_end    = LLOG_LAST_OPC,
 230                 .mos_hs         = mdt_llog_ops
 231         },
 232         {
 233                 .mos_opc_start  = SEC_CTX_INIT,
 234                 .mos_opc_end    = SEC_LAST_OPC,
 235                 .mos_hs         = mdt_sec_ctx_ops
 236         },
 237         {
 238                 .mos_opc_start  = QUOTA_DQACQ,
 239                 .mos_opc_end    = QUOTA_LAST_OPC,
 240                 .mos_hs         = mdt_quota_ops
 241         },
 242         {
 243                 .mos_hs         = NULL
 244         }
 245 };
 246
 247 /* Readpage/readdir handlers */
 248 static struct mdt_handler mdt_readpage_ops[] = {
 249 DEF_MDT_HDL(0,                  MDS_CONNECT,  mdt_connect),
 250 DEF_MDT_HDL(HABEO_CORPUS | HABEO_REFERO, MDS_READPAGE, mdt_readpage),
 251 /* XXX: this is ugly and should be fixed one day, see mdc_close() for
 252  * detailed comments. --umka */
 253 DEF_MDT_HDL(HABEO_CORPUS,               MDS_CLOSE,        mdt_close),
 254 DEF_MDT_HDL(HABEO_CORPUS,               MDS_DONE_WRITING, mdt_done_writing),
 255 };
 256
 257 static struct mdt_opc_slice mdt_readpage_handlers[] = {
 258         {
 259                 .mos_opc_start = MDS_GETATTR,
 260                 .mos_opc_end   = MDS_LAST_OPC,
 261                 .mos_hs = mdt_readpage_ops
 262         },
 263         {
 264                 .mos_opc_start = OBD_FIRST_OPC,
 265                 .mos_opc_end   = OBD_LAST_OPC,
 266                 .mos_hs = mdt_obd_ops
 267         },
 268         {
 269                 .mos_hs = NULL
 270         }
 271 };
 272
 273 /* Sequence service handlers */
 274 #define DEF_SEQ_HDL(flags, name, fn)                                    \
 275         DEFINE_RPC_HANDLER(SEQ_QUERY, flags, name, fn, &RQF_ ## name)
 276
 277 static struct mdt_handler mdt_seq_ops[] = {
 278 DEF_SEQ_HDL(0,                          SEQ_QUERY,        (void *)seq_query),
 279 };
 280
 281 struct mdt_opc_slice mdt_seq_handlers[] = {
 282         {
 283                 .mos_opc_start = SEQ_QUERY,
 284                 .mos_opc_end   = SEQ_LAST_OPC,
 285                 .mos_hs = mdt_seq_ops
 286         },
 287         {
 288                 .mos_hs = NULL
 289         }
 290 };
 291
 292 /* FID Location Database handlers */
 293 #define DEF_FLD_HDL(flags, name, fn)                                    \
 294         DEFINE_RPC_HANDLER(FLD_QUERY, flags, name, fn, &RQF_ ## name)
 295
 296 static struct mdt_handler mdt_fld_ops[] = {
 297 DEF_FLD_HDL(0,                          FLD_QUERY,        (void *)fld_query),
 298 };
 299
 300 struct mdt_opc_slice mdt_fld_handlers[] = {
 301         {
 302                 .mos_opc_start = FLD_QUERY,
 303                 .mos_opc_end   = FLD_LAST_OPC,
 304                 .mos_hs = mdt_fld_ops
 305         },
 306         {
 307                 .mos_hs = NULL
 308         }
 309 };
 310
 311 /* Request with a format known in advance */
 312 #define DEF_UPDATE_HDL(flags, name, fn)                                 \
 313         DEFINE_RPC_HANDLER(UPDATE_OBJ, flags, name, fn, &RQF_ ## name)
 314
 315 #define target_handler mdt_handler
 316 static struct target_handler out_ops[] = {
 317         DEF_UPDATE_HDL(MUTABOR,         UPDATE_OBJ,     out_handle),
 318 };
 319
 320 static struct mdt_opc_slice update_handlers[] = {
 321         {
 322                 .mos_opc_start = MDS_GETATTR,
 323                 .mos_opc_end   = MDS_LAST_OPC,
 324                 .mos_hs        = mdt_mds_ops
 325         },
 326         {
 327                 .mos_opc_start = OBD_PING,
 328                 .mos_opc_end   = OBD_LAST_OPC,
 329                 .mos_hs        = mdt_obd_ops
 330         },
 331         {
 332                 .mos_opc_start = LDLM_ENQUEUE,
 333                 .mos_opc_end   = LDLM_LAST_OPC,
 334                 .mos_hs        = mdt_dlm_ops
 335         },
 336         {
 337                 .mos_opc_start = SEC_CTX_INIT,
 338                 .mos_opc_end   = SEC_LAST_OPC,
 339                 .mos_hs        = mdt_sec_ctx_ops
 340         },
 341         {
 342                 .mos_opc_start = UPDATE_OBJ,
 343                 .mos_opc_end   = UPDATE_LAST_OPC,
 344                 .mos_hs        = out_ops
 345         },
 346         {
 347                 .mos_hs        = NULL
 348         }
 349 };
 350
 351 static int mds_regular_handle(struct ptlrpc_request *req)
 352 {
 353         return mdt_handle_common(req, mdt_regular_handlers);
 354 }
 355
 356 static int mds_readpage_handle(struct ptlrpc_request *req)
 357 {
 358         return mdt_handle_common(req, mdt_readpage_handlers);
 359 }
 360
 361 static int mds_mdsc_handle(struct ptlrpc_request *req)
 362 {
 363         return mdt_handle_common(req, mdt_seq_handlers);
 364 }
 365
 366 static int mdt_out_handle(struct ptlrpc_request *req)
 367 {
 368         return mdt_handle_common(req, update_handlers);
 369 }
 370
 371 static int mds_mdss_handle(struct ptlrpc_request *req)
 372 {
 373         return mdt_handle_common(req, mdt_seq_handlers);
 374 }
 375
 376 static int mds_fld_handle(struct ptlrpc_request *req)
 377 {
 378         return mdt_handle_common(req, mdt_fld_handlers);
 379 }
 380
 381 /* device init/fini methods */
 382 static void mds_stop_ptlrpc_service(struct mds_device *m)
 383 {
 384         ENTRY;
 385         if (m->mds_regular_service != NULL) {
 386                 ptlrpc_unregister_service(m->mds_regular_service);
 387                 m->mds_regular_service = NULL;
 388         }
 389         if (m->mds_readpage_service != NULL) {
 390                 ptlrpc_unregister_service(m->mds_readpage_service);
 391                 m->mds_readpage_service = NULL;
 392         }
 393         if (m->mds_out_service != NULL) {
 394                 ptlrpc_unregister_service(m->mds_out_service);
 395                 m->mds_out_service = NULL;
 396         }
 397         if (m->mds_setattr_service != NULL) {
 398                 ptlrpc_unregister_service(m->mds_setattr_service);
 399                 m->mds_setattr_service = NULL;
 400         }
 401         if (m->mds_mdsc_service != NULL) {
 402                 ptlrpc_unregister_service(m->mds_mdsc_service);
 403                 m->mds_mdsc_service = NULL;
 404         }
 405         if (m->mds_mdss_service != NULL) {
 406                 ptlrpc_unregister_service(m->mds_mdss_service);
 407                 m->mds_mdss_service = NULL;
 408         }
 409         if (m->mds_fld_service != NULL) {
 410                 ptlrpc_unregister_service(m->mds_fld_service);
 411                 m->mds_fld_service = NULL;
 412         }
 413         EXIT;
 414 }
 415
 416 static int mds_start_ptlrpc_service(struct mds_device *m)
 417 {
 418         static struct ptlrpc_service_conf conf;
 419         struct obd_device *obd = m->mds_md_dev.md_lu_dev.ld_obd;
 420         cfs_proc_dir_entry_t *procfs_entry;
 421         int rc = 0;
 422         ENTRY;
 423
 424         procfs_entry = obd->obd_proc_entry;
 425         LASSERT(procfs_entry != NULL);
 426
 427         conf = (typeof(conf)) {
 428                 .psc_name               = LUSTRE_MDT_NAME,
 429                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 430                 .psc_buf                = {
 431                         .bc_nbufs               = MDS_NBUFS,
 432                         .bc_buf_size            = MDS_LOV_BUFSIZE,
 433                         .bc_req_max_size        = MDS_LOV_MAXREQSIZE,
 434                         .bc_rep_max_size        = MDS_LOV_MAXREPSIZE,
 435                         .bc_req_portal          = MDS_REQUEST_PORTAL,
 436                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 437                 },
 438                 /*
 439                  * We'd like to have a mechanism to set this on a per-device
 440                  * basis, but alas...
 441                  */
 442                 .psc_thr                = {
 443                         .tc_thr_name            = LUSTRE_MDT_NAME,
 444                         .tc_thr_factor          = MDS_THR_FACTOR,
 445                         .tc_nthrs_init          = MDS_NTHRS_INIT,
 446                         .tc_nthrs_base          = MDS_NTHRS_BASE,
 447                         .tc_nthrs_max           = MDS_NTHRS_MAX,
 448                         .tc_nthrs_user          = mds_num_threads,
 449                         .tc_cpu_affinity        = 1,
 450                         .tc_ctx_tags            = LCT_MD_THREAD,
 451                 },
 452                 .psc_cpt                = {
 453                         .cc_pattern             = mds_num_cpts,
 454                 },
 455                 .psc_ops                = {
 456                         .so_req_handler         = mds_regular_handle,
 457                         .so_req_printer         = target_print_req,
 458                         .so_hpreq_handler       = ptlrpc_hpreq_handler,
 459                 },
 460         };
 461         m->mds_regular_service = ptlrpc_register_service(&conf, procfs_entry);
 462         if (IS_ERR(m->mds_regular_service)) {
 463                 rc = PTR_ERR(m->mds_regular_service);
 464                 CERROR("failed to start regular mdt service: %d\n", rc);
 465                 m->mds_regular_service = NULL;
 466
 467                 RETURN(rc);
 468         }
 469
 470         /*
 471          * readpage service configuration. Parameters have to be adjusted,
 472          * ideally.
 473          */
 474         memset(&conf, 0, sizeof(conf));
 475         conf = (typeof(conf)) {
 476                 .psc_name               = LUSTRE_MDT_NAME "_readpage",
 477                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 478                 .psc_buf                = {
 479                         .bc_nbufs               = MDS_NBUFS,
 480                         .bc_buf_size            = MDS_BUFSIZE,
 481                         .bc_req_max_size        = MDS_MAXREQSIZE,
 482                         .bc_rep_max_size        = MDS_MAXREPSIZE,
 483                         .bc_req_portal          = MDS_READPAGE_PORTAL,
 484                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 485                 },
 486                 .psc_thr                = {
 487                         .tc_thr_name            = LUSTRE_MDT_NAME "_rdpg",
 488                         .tc_thr_factor          = MDS_RDPG_THR_FACTOR,
 489                         .tc_nthrs_init          = MDS_RDPG_NTHRS_INIT,
 490                         .tc_nthrs_base          = MDS_RDPG_NTHRS_BASE,
 491                         .tc_nthrs_max           = MDS_RDPG_NTHRS_MAX,
 492                         .tc_nthrs_user          = mds_rdpg_num_threads,
 493                         .tc_cpu_affinity        = 1,
 494                         .tc_ctx_tags            = LCT_MD_THREAD,
 495                 },
 496                 .psc_cpt                = {
 497                         .cc_pattern             = mds_rdpg_num_cpts,
 498                 },
 499                 .psc_ops                = {
 500                         .so_req_handler         = mds_readpage_handle,
 501                         .so_req_printer         = target_print_req,
 502                 },
 503         };
 504         m->mds_readpage_service = ptlrpc_register_service(&conf, procfs_entry);
 505         if (IS_ERR(m->mds_readpage_service)) {
 506                 rc = PTR_ERR(m->mds_readpage_service);
 507                 CERROR("failed to start readpage service: %d\n", rc);
 508                 m->mds_readpage_service = NULL;
 509
 510                 GOTO(err_mds_svc, rc);
 511         }
 512
 513         /*
 514          * setattr service configuration.
 515          *
 516          * XXX To keep the compatibility with old client(< 2.2), we need to
 517          * preserve this portal for a certain time, it should be removed
 518          * eventually. LU-617.
 519          */
 520         memset(&conf, 0, sizeof(conf));
 521         conf = (typeof(conf)) {
 522                 .psc_name               = LUSTRE_MDT_NAME "_setattr",
 523                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 524                 .psc_buf                = {
 525                         .bc_nbufs               = MDS_NBUFS,
 526                         .bc_buf_size            = MDS_BUFSIZE,
 527                         .bc_req_max_size        = MDS_MAXREQSIZE,
 528                         .bc_rep_max_size        = MDS_LOV_MAXREPSIZE,
 529                         .bc_req_portal          = MDS_SETATTR_PORTAL,
 530                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 531                 },
 532                 .psc_thr                = {
 533                         .tc_thr_name            = LUSTRE_MDT_NAME "_attr",
 534                         .tc_thr_factor          = MDS_SETA_THR_FACTOR,
 535                         .tc_nthrs_init          = MDS_SETA_NTHRS_INIT,
 536                         .tc_nthrs_base          = MDS_SETA_NTHRS_BASE,
 537                         .tc_nthrs_max           = MDS_SETA_NTHRS_MAX,
 538                         .tc_nthrs_user          = mds_attr_num_threads,
 539                         .tc_cpu_affinity        = 1,
 540                         .tc_ctx_tags            = LCT_MD_THREAD,
 541                 },
 542                 .psc_cpt                = {
 543                         .cc_pattern             = mds_attr_num_cpts,
 544                 },
 545                 .psc_ops                = {
 546                         .so_req_handler         = mds_regular_handle,
 547                         .so_req_printer         = target_print_req,
 548                         .so_hpreq_handler       = NULL,
 549                 },
 550         };
 551         m->mds_setattr_service = ptlrpc_register_service(&conf, procfs_entry);
 552         if (IS_ERR(m->mds_setattr_service)) {
 553                 rc = PTR_ERR(m->mds_setattr_service);
 554                 CERROR("failed to start setattr service: %d\n", rc);
 555                 m->mds_setattr_service = NULL;
 556
 557                 GOTO(err_mds_svc, rc);
 558         }
 559
 560         /* Object update service */
 561         conf = (typeof(conf)) {
 562                 .psc_name               = LUSTRE_MDT_NAME "_out",
 563                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 564                 .psc_buf                = {
 565                         .bc_nbufs               = MDS_NBUFS,
 566                         .bc_buf_size            = MDS_BUFSIZE,
 567                         .bc_req_max_size        = MDS_MAXREQSIZE,
 568                         .bc_rep_max_size        = MDS_MAXREPSIZE,
 569                         .bc_req_portal          = MDS_MDS_PORTAL,
 570                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 571                 },
 572                 /*
 573                  * We'd like to have a mechanism to set this on a per-device
 574                  * basis, but alas...
 575                  */
 576                 .psc_thr                = {
 577                         .tc_thr_name            = LUSTRE_MDT_NAME "_out",
 578                         .tc_thr_factor          = MDS_THR_FACTOR,
 579                         .tc_nthrs_init          = MDS_NTHRS_INIT,
 580                         .tc_nthrs_base          = MDS_NTHRS_BASE,
 581                         .tc_nthrs_max           = MDS_NTHRS_MAX,
 582                         .tc_nthrs_user          = mds_num_threads,
 583                         .tc_cpu_affinity        = 1,
 584                         .tc_ctx_tags            = LCT_MD_THREAD,
 585                 },
 586                 .psc_cpt                = {
 587                         .cc_pattern             = mds_num_cpts,
 588                 },
 589                 .psc_ops                = {
 590                         .so_req_handler         = mdt_out_handle,
 591                         .so_req_printer         = target_print_req,
 592                         .so_hpreq_handler       = NULL,
 593                 },
 594         };
 595         m->mds_out_service = ptlrpc_register_service(&conf, procfs_entry);
 596         if (IS_ERR(m->mds_out_service)) {
 597                 rc = PTR_ERR(m->mds_out_service);
 598                 CERROR("failed to start out service: %d\n", rc);
 599                 m->mds_out_service = NULL;
 600                 GOTO(err_mds_svc, rc);
 601         }
 602
 603         /*
 604          * sequence controller service configuration
 605          */
 606         memset(&conf, 0, sizeof(conf));
 607         conf = (typeof(conf)) {
 608                 .psc_name               = LUSTRE_MDT_NAME "_seqs",
 609                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 610                 .psc_buf                = {
 611                         .bc_nbufs               = MDS_NBUFS,
 612                         .bc_buf_size            = SEQ_BUFSIZE,
 613                         .bc_req_max_size        = SEQ_MAXREQSIZE,
 614                         .bc_rep_max_size        = SEQ_MAXREPSIZE,
 615                         .bc_req_portal          = SEQ_CONTROLLER_PORTAL,
 616                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 617                 },
 618                 .psc_thr                = {
 619                         .tc_thr_name            = LUSTRE_MDT_NAME "_seqs",
 620                         .tc_nthrs_init          = MDS_OTHR_NTHRS_INIT,
 621                         .tc_nthrs_max           = MDS_OTHR_NTHRS_MAX,
 622                         .tc_ctx_tags            = LCT_MD_THREAD,
 623                 },
 624                 .psc_ops                = {
 625                         .so_req_handler         = mds_mdsc_handle,
 626                         .so_req_printer         = target_print_req,
 627                         .so_hpreq_handler       = NULL,
 628                 },
 629         };
 630         m->mds_mdsc_service = ptlrpc_register_service(&conf, procfs_entry);
 631         if (IS_ERR(m->mds_mdsc_service)) {
 632                 rc = PTR_ERR(m->mds_mdsc_service);
 633                 CERROR("failed to start seq controller service: %d\n", rc);
 634                 m->mds_mdsc_service = NULL;
 635
 636                 GOTO(err_mds_svc, rc);
 637         }
 638
 639         /*
 640          * metadata sequence server service configuration
 641          */
 642         memset(&conf, 0, sizeof(conf));
 643         conf = (typeof(conf)) {
 644                 .psc_name               = LUSTRE_MDT_NAME "_seqm",
 645                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 646                 .psc_buf                = {
 647                         .bc_nbufs               = MDS_NBUFS,
 648                         .bc_buf_size            = SEQ_BUFSIZE,
 649                         .bc_req_max_size        = SEQ_MAXREQSIZE,
 650                         .bc_rep_max_size        = SEQ_MAXREPSIZE,
 651                         .bc_req_portal          = SEQ_METADATA_PORTAL,
 652                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 653                 },
 654                 .psc_thr                = {
 655                         .tc_thr_name            = LUSTRE_MDT_NAME "_seqm",
 656                         .tc_nthrs_init          = MDS_OTHR_NTHRS_INIT,
 657                         .tc_nthrs_max           = MDS_OTHR_NTHRS_MAX,
 658                         .tc_ctx_tags            = LCT_MD_THREAD | LCT_DT_THREAD
 659                 },
 660                 .psc_ops                = {
 661                         .so_req_handler         = mds_mdss_handle,
 662                         .so_req_printer         = target_print_req,
 663                         .so_hpreq_handler       = NULL,
 664                 },
 665         };
 666         m->mds_mdss_service = ptlrpc_register_service(&conf, procfs_entry);
 667         if (IS_ERR(m->mds_mdss_service)) {
 668                 rc = PTR_ERR(m->mds_mdss_service);
 669                 CERROR("failed to start metadata seq server service: %d\n", rc);
 670                 m->mds_mdss_service = NULL;
 671
 672                 GOTO(err_mds_svc, rc);
 673         }
 674
 675         /* FLD service start */
 676         memset(&conf, 0, sizeof(conf));
 677         conf = (typeof(conf)) {
 678                 .psc_name            = LUSTRE_MDT_NAME "_fld",
 679                 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
 680                 .psc_buf                = {
 681                         .bc_nbufs               = MDS_NBUFS,
 682                         .bc_buf_size            = FLD_BUFSIZE,
 683                         .bc_req_max_size        = FLD_MAXREQSIZE,
 684                         .bc_rep_max_size        = FLD_MAXREPSIZE,
 685                         .bc_req_portal          = FLD_REQUEST_PORTAL,
 686                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 687                 },
 688                 .psc_thr                = {
 689                         .tc_thr_name            = LUSTRE_MDT_NAME "_fld",
 690                         .tc_nthrs_init          = MDS_OTHR_NTHRS_INIT,
 691                         .tc_nthrs_max           = MDS_OTHR_NTHRS_MAX,
 692                         .tc_ctx_tags            = LCT_DT_THREAD | LCT_MD_THREAD
 693                 },
 694                 .psc_ops                = {
 695                         .so_req_handler         = mds_fld_handle,
 696                         .so_req_printer         = target_print_req,
 697                         .so_hpreq_handler       = NULL,
 698                 },
 699         };
 700         m->mds_fld_service = ptlrpc_register_service(&conf, procfs_entry);
 701         if (IS_ERR(m->mds_fld_service)) {
 702                 rc = PTR_ERR(m->mds_fld_service);
 703                 CERROR("failed to start fld service: %d\n", rc);
 704                 m->mds_fld_service = NULL;
 705
 706                 GOTO(err_mds_svc, rc);
 707         }
 708
 709         EXIT;
 710 err_mds_svc:
 711         if (rc)
 712                 mds_stop_ptlrpc_service(m);
 713
 714         return rc;
 715 }
 716
 717 static inline struct mds_device *mds_dev(struct lu_device *d)
 718 {
 719         return container_of0(d, struct mds_device, mds_md_dev.md_lu_dev);
 720 }
 721
 722 static struct lu_device *mds_device_fini(const struct lu_env *env,
 723                                          struct lu_device *d)
 724 {
 725         struct mds_device *m = mds_dev(d);
 726         struct obd_device *obd = d->ld_obd;
 727         ENTRY;
 728
 729         mds_stop_ptlrpc_service(m);
 730         lprocfs_obd_cleanup(obd);
 731         RETURN(NULL);
 732 }
 733
 734 static struct lu_device *mds_device_free(const struct lu_env *env,
 735                                          struct lu_device *d)
 736 {
 737         struct mds_device *m = mds_dev(d);
 738         ENTRY;
 739
 740         md_device_fini(&m->mds_md_dev);
 741         OBD_FREE_PTR(m);
 742         RETURN(NULL);
 743 }
 744
 745 static struct lu_device *mds_device_alloc(const struct lu_env *env,
 746                                           struct lu_device_type *t,
 747                                           struct lustre_cfg *cfg)
 748 {
 749         struct mds_device        *m;
 750         struct obd_device        *obd;
 751         struct lu_device          *l;
 752         int rc;
 753
 754         OBD_ALLOC_PTR(m);
 755         if (m == NULL)
 756                 return ERR_PTR(-ENOMEM);
 757
 758         md_device_init(&m->mds_md_dev, t);
 759         l = &m->mds_md_dev.md_lu_dev;
 760
 761         obd = class_name2obd(lustre_cfg_string(cfg, 0));
 762         LASSERT(obd != NULL);
 763
 764         l->ld_obd = obd;
 765         /* set this lu_device to obd, because error handling need it */
 766         obd->obd_lu_dev = l;
 767
 768         rc = lprocfs_obd_setup(obd, lprocfs_mds_obd_vars);
 769         if (rc != 0) {
 770                 mds_device_free(env, l);
 771                 l = ERR_PTR(rc);
 772                 return l;
 773         }
 774
 775         rc = mds_start_ptlrpc_service(m);
 776
 777         if (rc != 0) {
 778                 mds_device_free(env, l);
 779                 l = ERR_PTR(rc);
 780                 return l;
 781         }
 782
 783         return l;
 784 }
 785
 786 /* type constructor/destructor: mdt_type_init, mdt_type_fini */
 787 LU_TYPE_INIT_FINI(mds, &mdt_thread_key);
 788
 789 static struct lu_device_type_operations mds_device_type_ops = {
 790         .ldto_init = mds_type_init,
 791         .ldto_fini = mds_type_fini,
 792
 793         .ldto_start = mds_type_start,
 794         .ldto_stop  = mds_type_stop,
 795
 796         .ldto_device_alloc = mds_device_alloc,
 797         .ldto_device_free  = mds_device_free,
 798         .ldto_device_fini  = mds_device_fini
 799 };
 800
 801 static struct lu_device_type mds_device_type = {
 802         .ldt_tags     = LU_DEVICE_MD,
 803         .ldt_name     = LUSTRE_MDS_NAME,
 804         .ldt_ops      = &mds_device_type_ops,
 805         .ldt_ctx_tags = LCT_MD_THREAD
 806 };
 807
 808 static struct obd_ops mds_obd_device_ops = {
 809         .o_owner           = THIS_MODULE,
 810 };
 811
 812 int mds_mod_init(void)
 813 {
 814         int rc;
 815
 816         if (mdt_num_threads != 0 && mds_num_threads == 0) {
 817                 LCONSOLE_INFO("mdt_num_threads module parameter is deprecated, "
 818                               "use mds_num_threads instead or unset both for "
 819                               "dynamic thread startup\n");
 820                 mds_num_threads = mdt_num_threads;
 821         }
 822
 823         rc = class_register_type(&mds_obd_device_ops, NULL,
 824                                  lprocfs_mds_module_vars, LUSTRE_MDS_NAME,
 825                                  &mds_device_type);
 826         return rc;
 827 }
 828
 829 void mds_mod_exit(void)
 830 {
 831         class_unregister_type(LUSTRE_MDS_NAME);
 832 }