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 "mdt_internal.h"
  53 #include <lustre_quota.h>
  54 #include <lustre_acl.h>
  55 #include <lustre_param.h>
  56
  57 struct mds_device {
  58         /* super-class */
  59         struct md_device           mds_md_dev;
  60         struct ptlrpc_service     *mds_regular_service;
  61         struct ptlrpc_service     *mds_readpage_service;
  62         struct ptlrpc_service     *mds_out_service;
  63         struct ptlrpc_service     *mds_setattr_service;
  64         struct ptlrpc_service     *mds_mdsc_service;
  65         struct ptlrpc_service     *mds_mdss_service;
  66         struct ptlrpc_service     *mds_fld_service;
  67 };
  68
  69 /*
  70  *  * Initialized in mdt_mod_init().
  71  *   */
  72 static unsigned long mdt_num_threads;
  73 CFS_MODULE_PARM(mdt_num_threads, "ul", ulong, 0444,
  74                 "number of MDS service threads to start "
  75                 "(deprecated in favor of mds_num_threads)");
  76
  77 static unsigned long mds_num_threads;
  78 CFS_MODULE_PARM(mds_num_threads, "ul", ulong, 0444,
  79                 "number of MDS service threads to start");
  80
  81 static char *mds_num_cpts;
  82 CFS_MODULE_PARM(mds_num_cpts, "c", charp, 0444,
  83                 "CPU partitions MDS threads should run on");
  84
  85 static unsigned long mds_rdpg_num_threads;
  86 CFS_MODULE_PARM(mds_rdpg_num_threads, "ul", ulong, 0444,
  87                 "number of MDS readpage service threads to start");
  88
  89 static char *mds_rdpg_num_cpts;
  90 CFS_MODULE_PARM(mds_rdpg_num_cpts, "c", charp, 0444,
  91                 "CPU partitions MDS readpage threads should run on");
  92
  93 /* NB: these two should be removed along with setattr service in the future */
  94 static unsigned long mds_attr_num_threads;
  95 CFS_MODULE_PARM(mds_attr_num_threads, "ul", ulong, 0444,
  96                 "number of MDS setattr service threads to start");
  97
  98 static char *mds_attr_num_cpts;
  99 CFS_MODULE_PARM(mds_attr_num_cpts, "c", charp, 0444,
 100                 "CPU partitions MDS setattr threads should run on");
 101
 102 #define DEFINE_RPC_HANDLER(base, flags, opc, fn, fmt)                   \
 103 [opc - base] = {                                                        \
 104         .mh_name        = #opc,                                         \
 105         .mh_fail_id     = OBD_FAIL_ ## opc ## _NET,                     \
 106         .mh_opc         = opc,                                          \
 107         .mh_flags       = flags,                                        \
 108         .mh_act         = fn,                                           \
 109         .mh_fmt         = fmt                                           \
 110 }
 111
 112 /* Request with a format known in advance */
 113 #define DEF_MDT_HDL(flags, name, fn)                                    \
 114         DEFINE_RPC_HANDLER(MDS_GETATTR, flags, name, fn, &RQF_ ## name)
 115
 116 /* Request with a format we do not yet know */
 117 #define DEF_MDT_HDL_VAR(flags, name, fn)                                \
 118         DEFINE_RPC_HANDLER(MDS_GETATTR, flags, name, fn, NULL)
 119
 120 /* Map one non-standard request format handler.  This should probably get
 121  * a common OBD_SET_INFO RPC opcode instead of this mismatch. */
 122 #define RQF_MDS_SET_INFO RQF_OBD_SET_INFO
 123
 124 static struct mdt_handler mdt_mds_ops[] = {
 125 DEF_MDT_HDL(0,                          MDS_CONNECT,      mdt_connect),
 126 DEF_MDT_HDL(0,                          MDS_DISCONNECT,   mdt_disconnect),
 127 DEF_MDT_HDL(0,                          MDS_SET_INFO,     mdt_set_info),
 128 DEF_MDT_HDL(0,                          MDS_GET_INFO,     mdt_get_info),
 129 DEF_MDT_HDL(0           | HABEO_REFERO, MDS_GETSTATUS,    mdt_getstatus),
 130 DEF_MDT_HDL(HABEO_CORPUS,               MDS_GETATTR,      mdt_getattr),
 131 DEF_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_GETATTR_NAME, mdt_getattr_name),
 132 DEF_MDT_HDL(HABEO_CORPUS,               MDS_GETXATTR,     mdt_getxattr),
 133 DEF_MDT_HDL(0           | HABEO_REFERO, MDS_STATFS,       mdt_statfs),
 134 DEF_MDT_HDL(0           | MUTABOR,      MDS_REINT,        mdt_reint),
 135 DEF_MDT_HDL(HABEO_CORPUS,               MDS_CLOSE,        mdt_close),
 136 DEF_MDT_HDL(HABEO_CORPUS,               MDS_DONE_WRITING, mdt_done_writing),
 137 DEF_MDT_HDL(0           | HABEO_REFERO, MDS_PIN,          mdt_pin),
 138 DEF_MDT_HDL_VAR(0,                      MDS_SYNC,         mdt_sync),
 139 DEF_MDT_HDL(HABEO_CORPUS| HABEO_REFERO, MDS_IS_SUBDIR,    mdt_is_subdir),
 140 DEF_MDT_HDL(0,                          MDS_QUOTACHECK,   mdt_quotacheck),
 141 DEF_MDT_HDL(0,                          MDS_QUOTACTL,     mdt_quotactl),
 142 DEF_MDT_HDL(HABEO_CORPUS | HABEO_REFERO | MUTABOR, MDS_HSM_PROGRESS,
 143             mdt_hsm_progress),
 144 DEF_MDT_HDL(HABEO_CORPUS | HABEO_REFERO | MUTABOR, MDS_HSM_CT_REGISTER,
 145             mdt_hsm_ct_register),
 146 DEF_MDT_HDL(HABEO_CORPUS | HABEO_REFERO | MUTABOR, MDS_HSM_CT_UNREGISTER,
 147             mdt_hsm_ct_unregister),
 148 DEF_MDT_HDL(HABEO_CORPUS | HABEO_REFERO, MDS_HSM_STATE_GET, mdt_hsm_state_get),
 149 DEF_MDT_HDL(HABEO_CORPUS | HABEO_REFERO | MUTABOR, MDS_HSM_STATE_SET,
 150             mdt_hsm_state_set),
 151 DEF_MDT_HDL(HABEO_CORPUS | HABEO_REFERO, MDS_HSM_ACTION, mdt_hsm_action),
 152 DEF_MDT_HDL(HABEO_CORPUS | HABEO_REFERO, MDS_HSM_REQUEST, mdt_hsm_request),
 153 DEF_MDT_HDL(HABEO_CORPUS | HABEO_REFERO | MUTABOR, MDS_SWAP_LAYOUTS,
 154             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 static int mds_regular_handle(struct ptlrpc_request *req)
 273 {
 274         return mdt_handle_common(req, mdt_regular_handlers);
 275 }
 276
 277 static int mds_readpage_handle(struct ptlrpc_request *req)
 278 {
 279         return mdt_handle_common(req, mdt_readpage_handlers);
 280 }
 281
 282 /* device init/fini methods */
 283 static void mds_stop_ptlrpc_service(struct mds_device *m)
 284 {
 285         ENTRY;
 286         if (m->mds_regular_service != NULL) {
 287                 ptlrpc_unregister_service(m->mds_regular_service);
 288                 m->mds_regular_service = NULL;
 289         }
 290         if (m->mds_readpage_service != NULL) {
 291                 ptlrpc_unregister_service(m->mds_readpage_service);
 292                 m->mds_readpage_service = NULL;
 293         }
 294         if (m->mds_out_service != NULL) {
 295                 ptlrpc_unregister_service(m->mds_out_service);
 296                 m->mds_out_service = NULL;
 297         }
 298         if (m->mds_setattr_service != NULL) {
 299                 ptlrpc_unregister_service(m->mds_setattr_service);
 300                 m->mds_setattr_service = NULL;
 301         }
 302         if (m->mds_mdsc_service != NULL) {
 303                 ptlrpc_unregister_service(m->mds_mdsc_service);
 304                 m->mds_mdsc_service = NULL;
 305         }
 306         if (m->mds_mdss_service != NULL) {
 307                 ptlrpc_unregister_service(m->mds_mdss_service);
 308                 m->mds_mdss_service = NULL;
 309         }
 310         if (m->mds_fld_service != NULL) {
 311                 ptlrpc_unregister_service(m->mds_fld_service);
 312                 m->mds_fld_service = NULL;
 313         }
 314         EXIT;
 315 }
 316
 317 static int mds_start_ptlrpc_service(struct mds_device *m)
 318 {
 319         static struct ptlrpc_service_conf conf;
 320         struct obd_device *obd = m->mds_md_dev.md_lu_dev.ld_obd;
 321         cfs_proc_dir_entry_t *procfs_entry;
 322         int rc = 0;
 323         ENTRY;
 324
 325         procfs_entry = obd->obd_proc_entry;
 326         LASSERT(procfs_entry != NULL);
 327
 328         conf = (typeof(conf)) {
 329                 .psc_name               = LUSTRE_MDT_NAME,
 330                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 331                 .psc_buf                = {
 332                         .bc_nbufs               = MDS_NBUFS,
 333                         .bc_buf_size            = MDS_REG_BUFSIZE,
 334                         .bc_req_max_size        = MDS_REG_MAXREQSIZE,
 335                         .bc_rep_max_size        = MDS_REG_MAXREPSIZE,
 336                         .bc_req_portal          = MDS_REQUEST_PORTAL,
 337                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 338                 },
 339                 /*
 340                  * We'd like to have a mechanism to set this on a per-device
 341                  * basis, but alas...
 342                  */
 343                 .psc_thr                = {
 344                         .tc_thr_name            = LUSTRE_MDT_NAME,
 345                         .tc_thr_factor          = MDS_THR_FACTOR,
 346                         .tc_nthrs_init          = MDS_NTHRS_INIT,
 347                         .tc_nthrs_base          = MDS_NTHRS_BASE,
 348                         .tc_nthrs_max           = MDS_NTHRS_MAX,
 349                         .tc_nthrs_user          = mds_num_threads,
 350                         .tc_cpu_affinity        = 1,
 351                         .tc_ctx_tags            = LCT_MD_THREAD,
 352                 },
 353                 .psc_cpt                = {
 354                         .cc_pattern             = mds_num_cpts,
 355                 },
 356                 .psc_ops                = {
 357                         .so_req_handler         = mds_regular_handle,
 358                         .so_req_printer         = target_print_req,
 359                         .so_hpreq_handler       = ptlrpc_hpreq_handler,
 360                 },
 361         };
 362         m->mds_regular_service = ptlrpc_register_service(&conf, procfs_entry);
 363         if (IS_ERR(m->mds_regular_service)) {
 364                 rc = PTR_ERR(m->mds_regular_service);
 365                 CERROR("failed to start regular mdt service: %d\n", rc);
 366                 m->mds_regular_service = NULL;
 367
 368                 RETURN(rc);
 369         }
 370
 371         /*
 372          * readpage service configuration. Parameters have to be adjusted,
 373          * ideally.
 374          */
 375         memset(&conf, 0, sizeof(conf));
 376         conf = (typeof(conf)) {
 377                 .psc_name               = LUSTRE_MDT_NAME "_readpage",
 378                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 379                 .psc_buf                = {
 380                         .bc_nbufs               = MDS_NBUFS,
 381                         .bc_buf_size            = MDS_BUFSIZE,
 382                         .bc_req_max_size        = MDS_MAXREQSIZE,
 383                         .bc_rep_max_size        = MDS_MAXREPSIZE,
 384                         .bc_req_portal          = MDS_READPAGE_PORTAL,
 385                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 386                 },
 387                 .psc_thr                = {
 388                         .tc_thr_name            = LUSTRE_MDT_NAME "_rdpg",
 389                         .tc_thr_factor          = MDS_RDPG_THR_FACTOR,
 390                         .tc_nthrs_init          = MDS_RDPG_NTHRS_INIT,
 391                         .tc_nthrs_base          = MDS_RDPG_NTHRS_BASE,
 392                         .tc_nthrs_max           = MDS_RDPG_NTHRS_MAX,
 393                         .tc_nthrs_user          = mds_rdpg_num_threads,
 394                         .tc_cpu_affinity        = 1,
 395                         .tc_ctx_tags            = LCT_MD_THREAD,
 396                 },
 397                 .psc_cpt                = {
 398                         .cc_pattern             = mds_rdpg_num_cpts,
 399                 },
 400                 .psc_ops                = {
 401                         .so_req_handler         = mds_readpage_handle,
 402                         .so_req_printer         = target_print_req,
 403                 },
 404         };
 405         m->mds_readpage_service = ptlrpc_register_service(&conf, procfs_entry);
 406         if (IS_ERR(m->mds_readpage_service)) {
 407                 rc = PTR_ERR(m->mds_readpage_service);
 408                 CERROR("failed to start readpage service: %d\n", rc);
 409                 m->mds_readpage_service = NULL;
 410
 411                 GOTO(err_mds_svc, rc);
 412         }
 413
 414         /*
 415          * setattr service configuration.
 416          *
 417          * XXX To keep the compatibility with old client(< 2.2), we need to
 418          * preserve this portal for a certain time, it should be removed
 419          * eventually. LU-617.
 420          */
 421         memset(&conf, 0, sizeof(conf));
 422         conf = (typeof(conf)) {
 423                 .psc_name               = LUSTRE_MDT_NAME "_setattr",
 424                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 425                 .psc_buf                = {
 426                         .bc_nbufs               = MDS_NBUFS,
 427                         .bc_buf_size            = MDS_BUFSIZE,
 428                         .bc_req_max_size        = MDS_MAXREQSIZE,
 429                         .bc_rep_max_size        = MDS_LOV_MAXREPSIZE,
 430                         .bc_req_portal          = MDS_SETATTR_PORTAL,
 431                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 432                 },
 433                 .psc_thr                = {
 434                         .tc_thr_name            = LUSTRE_MDT_NAME "_attr",
 435                         .tc_thr_factor          = MDS_SETA_THR_FACTOR,
 436                         .tc_nthrs_init          = MDS_SETA_NTHRS_INIT,
 437                         .tc_nthrs_base          = MDS_SETA_NTHRS_BASE,
 438                         .tc_nthrs_max           = MDS_SETA_NTHRS_MAX,
 439                         .tc_nthrs_user          = mds_attr_num_threads,
 440                         .tc_cpu_affinity        = 1,
 441                         .tc_ctx_tags            = LCT_MD_THREAD,
 442                 },
 443                 .psc_cpt                = {
 444                         .cc_pattern             = mds_attr_num_cpts,
 445                 },
 446                 .psc_ops                = {
 447                         .so_req_handler         = mds_regular_handle,
 448                         .so_req_printer         = target_print_req,
 449                         .so_hpreq_handler       = NULL,
 450                 },
 451         };
 452         m->mds_setattr_service = ptlrpc_register_service(&conf, procfs_entry);
 453         if (IS_ERR(m->mds_setattr_service)) {
 454                 rc = PTR_ERR(m->mds_setattr_service);
 455                 CERROR("failed to start setattr service: %d\n", rc);
 456                 m->mds_setattr_service = NULL;
 457
 458                 GOTO(err_mds_svc, rc);
 459         }
 460
 461         /* Object update service */
 462         conf = (typeof(conf)) {
 463                 .psc_name               = LUSTRE_MDT_NAME "_out",
 464                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 465                 .psc_buf                = {
 466                         .bc_nbufs               = MDS_NBUFS,
 467                         .bc_buf_size            = OUT_BUFSIZE,
 468                         .bc_req_max_size        = OUT_MAXREQSIZE,
 469                         .bc_rep_max_size        = OUT_MAXREPSIZE,
 470                         .bc_req_portal          = OUT_PORTAL,
 471                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 472                 },
 473                 /*
 474                  * We'd like to have a mechanism to set this on a per-device
 475                  * basis, but alas...
 476                  */
 477                 .psc_thr                = {
 478                         .tc_thr_name            = LUSTRE_MDT_NAME "_out",
 479                         .tc_thr_factor          = MDS_THR_FACTOR,
 480                         .tc_nthrs_init          = MDS_NTHRS_INIT,
 481                         .tc_nthrs_base          = MDS_NTHRS_BASE,
 482                         .tc_nthrs_max           = MDS_NTHRS_MAX,
 483                         .tc_nthrs_user          = mds_num_threads,
 484                         .tc_cpu_affinity        = 1,
 485                         .tc_ctx_tags            = LCT_MD_THREAD,
 486                 },
 487                 .psc_cpt                = {
 488                         .cc_pattern             = mds_num_cpts,
 489                 },
 490                 .psc_ops                = {
 491                         .so_req_handler         = tgt_request_handle,
 492                         .so_req_printer         = target_print_req,
 493                         .so_hpreq_handler       = NULL,
 494                 },
 495         };
 496         m->mds_out_service = ptlrpc_register_service(&conf, procfs_entry);
 497         if (IS_ERR(m->mds_out_service)) {
 498                 rc = PTR_ERR(m->mds_out_service);
 499                 CERROR("failed to start out service: %d\n", rc);
 500                 m->mds_out_service = NULL;
 501                 GOTO(err_mds_svc, rc);
 502         }
 503
 504         /*
 505          * sequence controller service configuration
 506          */
 507         memset(&conf, 0, sizeof(conf));
 508         conf = (typeof(conf)) {
 509                 .psc_name               = LUSTRE_MDT_NAME "_seqs",
 510                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 511                 .psc_buf                = {
 512                         .bc_nbufs               = MDS_NBUFS,
 513                         .bc_buf_size            = SEQ_BUFSIZE,
 514                         .bc_req_max_size        = SEQ_MAXREQSIZE,
 515                         .bc_rep_max_size        = SEQ_MAXREPSIZE,
 516                         .bc_req_portal          = SEQ_CONTROLLER_PORTAL,
 517                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 518                 },
 519                 .psc_thr                = {
 520                         .tc_thr_name            = LUSTRE_MDT_NAME "_seqs",
 521                         .tc_nthrs_init          = MDS_OTHR_NTHRS_INIT,
 522                         .tc_nthrs_max           = MDS_OTHR_NTHRS_MAX,
 523                         .tc_ctx_tags            = LCT_MD_THREAD,
 524                 },
 525                 .psc_ops                = {
 526                         .so_req_handler         = tgt_request_handle,
 527                         .so_req_printer         = target_print_req,
 528                         .so_hpreq_handler       = NULL,
 529                 },
 530         };
 531         m->mds_mdsc_service = ptlrpc_register_service(&conf, procfs_entry);
 532         if (IS_ERR(m->mds_mdsc_service)) {
 533                 rc = PTR_ERR(m->mds_mdsc_service);
 534                 CERROR("failed to start seq controller service: %d\n", rc);
 535                 m->mds_mdsc_service = NULL;
 536
 537                 GOTO(err_mds_svc, rc);
 538         }
 539
 540         /*
 541          * metadata sequence server service configuration
 542          */
 543         memset(&conf, 0, sizeof(conf));
 544         conf = (typeof(conf)) {
 545                 .psc_name               = LUSTRE_MDT_NAME "_seqm",
 546                 .psc_watchdog_factor    = MDT_SERVICE_WATCHDOG_FACTOR,
 547                 .psc_buf                = {
 548                         .bc_nbufs               = MDS_NBUFS,
 549                         .bc_buf_size            = SEQ_BUFSIZE,
 550                         .bc_req_max_size        = SEQ_MAXREQSIZE,
 551                         .bc_rep_max_size        = SEQ_MAXREPSIZE,
 552                         .bc_req_portal          = SEQ_METADATA_PORTAL,
 553                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 554                 },
 555                 .psc_thr                = {
 556                         .tc_thr_name            = LUSTRE_MDT_NAME "_seqm",
 557                         .tc_nthrs_init          = MDS_OTHR_NTHRS_INIT,
 558                         .tc_nthrs_max           = MDS_OTHR_NTHRS_MAX,
 559                         .tc_ctx_tags            = LCT_MD_THREAD | LCT_DT_THREAD
 560                 },
 561                 .psc_ops                = {
 562                         .so_req_handler         = tgt_request_handle,
 563                         .so_req_printer         = target_print_req,
 564                         .so_hpreq_handler       = NULL,
 565                 },
 566         };
 567         m->mds_mdss_service = ptlrpc_register_service(&conf, procfs_entry);
 568         if (IS_ERR(m->mds_mdss_service)) {
 569                 rc = PTR_ERR(m->mds_mdss_service);
 570                 CERROR("failed to start metadata seq server service: %d\n", rc);
 571                 m->mds_mdss_service = NULL;
 572
 573                 GOTO(err_mds_svc, rc);
 574         }
 575
 576         /* FLD service start */
 577         memset(&conf, 0, sizeof(conf));
 578         conf = (typeof(conf)) {
 579                 .psc_name            = LUSTRE_MDT_NAME "_fld",
 580                 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
 581                 .psc_buf                = {
 582                         .bc_nbufs               = MDS_NBUFS,
 583                         .bc_buf_size            = FLD_BUFSIZE,
 584                         .bc_req_max_size        = FLD_MAXREQSIZE,
 585                         .bc_rep_max_size        = FLD_MAXREPSIZE,
 586                         .bc_req_portal          = FLD_REQUEST_PORTAL,
 587                         .bc_rep_portal          = MDC_REPLY_PORTAL,
 588                 },
 589                 .psc_thr                = {
 590                         .tc_thr_name            = LUSTRE_MDT_NAME "_fld",
 591                         .tc_nthrs_init          = MDS_OTHR_NTHRS_INIT,
 592                         .tc_nthrs_max           = MDS_OTHR_NTHRS_MAX,
 593                         .tc_ctx_tags            = LCT_DT_THREAD | LCT_MD_THREAD,
 594                 },
 595                 .psc_ops                = {
 596                         .so_req_handler         = tgt_request_handle,
 597                         .so_req_printer         = target_print_req,
 598                         .so_hpreq_handler       = NULL,
 599                 },
 600         };
 601         m->mds_fld_service = ptlrpc_register_service(&conf, procfs_entry);
 602         if (IS_ERR(m->mds_fld_service)) {
 603                 rc = PTR_ERR(m->mds_fld_service);
 604                 CERROR("failed to start fld service: %d\n", rc);
 605                 m->mds_fld_service = NULL;
 606
 607                 GOTO(err_mds_svc, rc);
 608         }
 609
 610         EXIT;
 611 err_mds_svc:
 612         if (rc)
 613                 mds_stop_ptlrpc_service(m);
 614
 615         return rc;
 616 }
 617
 618 static inline struct mds_device *mds_dev(struct lu_device *d)
 619 {
 620         return container_of0(d, struct mds_device, mds_md_dev.md_lu_dev);
 621 }
 622
 623 static struct lu_device *mds_device_fini(const struct lu_env *env,
 624                                          struct lu_device *d)
 625 {
 626         struct mds_device *m = mds_dev(d);
 627         struct obd_device *obd = d->ld_obd;
 628         ENTRY;
 629
 630         mds_stop_ptlrpc_service(m);
 631         lprocfs_obd_cleanup(obd);
 632         RETURN(NULL);
 633 }
 634
 635 static struct lu_device *mds_device_free(const struct lu_env *env,
 636                                          struct lu_device *d)
 637 {
 638         struct mds_device *m = mds_dev(d);
 639         ENTRY;
 640
 641         md_device_fini(&m->mds_md_dev);
 642         OBD_FREE_PTR(m);
 643         RETURN(NULL);
 644 }
 645
 646 static struct lu_device *mds_device_alloc(const struct lu_env *env,
 647                                           struct lu_device_type *t,
 648                                           struct lustre_cfg *cfg)
 649 {
 650         struct mds_device        *m;
 651         struct obd_device        *obd;
 652         struct lu_device          *l;
 653         int rc;
 654
 655         OBD_ALLOC_PTR(m);
 656         if (m == NULL)
 657                 return ERR_PTR(-ENOMEM);
 658
 659         md_device_init(&m->mds_md_dev, t);
 660         l = &m->mds_md_dev.md_lu_dev;
 661
 662         obd = class_name2obd(lustre_cfg_string(cfg, 0));
 663         LASSERT(obd != NULL);
 664
 665         l->ld_obd = obd;
 666         /* set this lu_device to obd, because error handling need it */
 667         obd->obd_lu_dev = l;
 668
 669         rc = lprocfs_obd_setup(obd, lprocfs_mds_obd_vars);
 670         if (rc != 0) {
 671                 mds_device_free(env, l);
 672                 l = ERR_PTR(rc);
 673                 return l;
 674         }
 675
 676         rc = mds_start_ptlrpc_service(m);
 677
 678         if (rc != 0) {
 679                 mds_device_free(env, l);
 680                 l = ERR_PTR(rc);
 681                 return l;
 682         }
 683         return l;
 684 }
 685
 686 /* type constructor/destructor: mdt_type_init, mdt_type_fini */
 687 LU_TYPE_INIT_FINI(mds, &mdt_thread_key);
 688
 689 static struct lu_device_type_operations mds_device_type_ops = {
 690         .ldto_init = mds_type_init,
 691         .ldto_fini = mds_type_fini,
 692
 693         .ldto_start = mds_type_start,
 694         .ldto_stop  = mds_type_stop,
 695
 696         .ldto_device_alloc = mds_device_alloc,
 697         .ldto_device_free  = mds_device_free,
 698         .ldto_device_fini  = mds_device_fini
 699 };
 700
 701 static struct lu_device_type mds_device_type = {
 702         .ldt_tags     = LU_DEVICE_MD,
 703         .ldt_name     = LUSTRE_MDS_NAME,
 704         .ldt_ops      = &mds_device_type_ops,
 705         .ldt_ctx_tags = LCT_MD_THREAD
 706 };
 707
 708 static struct obd_ops mds_obd_device_ops = {
 709         .o_owner           = THIS_MODULE,
 710 };
 711
 712 int mds_mod_init(void)
 713 {
 714         int rc;
 715
 716         if (mdt_num_threads != 0 && mds_num_threads == 0) {
 717                 LCONSOLE_INFO("mdt_num_threads module parameter is deprecated, "
 718                               "use mds_num_threads instead or unset both for "
 719                               "dynamic thread startup\n");
 720                 mds_num_threads = mdt_num_threads;
 721         }
 722
 723         rc = class_register_type(&mds_obd_device_ops, NULL,
 724                                  lprocfs_mds_module_vars, LUSTRE_MDS_NAME,
 725                                  &mds_device_type);
 726         return rc;
 727 }
 728
 729 void mds_mod_exit(void)
 730 {
 731         class_unregister_type(LUSTRE_MDS_NAME);
 732 }