lustre/ost/ost_handler.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, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License version 2 for more details (a copy is included
  14  * in the LICENSE file that accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * version 2 along with this program; If not, see
  18  * http://www.gnu.org/licenses/gpl-2.0.html
  19  *
  20  * GPL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
  24  * Use is subject to license terms.
  25  *
  26  * Copyright (c) 2011, 2015, Intel Corporation.
  27  */
  28 /*
  29  * This file is part of Lustre, http://www.lustre.org/
  30  * Lustre is a trademark of Sun Microsystems, Inc.
  31  *
  32  * lustre/ost/ost_handler.c
  33  *
  34  * Author: Peter J. Braam <braam@clusterfs.com>
  35  * Author: Phil Schwan <phil@clusterfs.com>
  36  */
  37
  38 #define DEBUG_SUBSYSTEM S_OST
  39
  40 #include <linux/module.h>
  41 #include <lustre_dlm.h>
  42 #include <lprocfs_status.h>
  43 #include <obd_class.h>
  44 #include "ost_internal.h"
  45
  46 int oss_max_threads = 512;
  47 module_param(oss_max_threads, int, 0444);
  48 MODULE_PARM_DESC(oss_max_threads, "maximum number of OSS service threads");
  49
  50 static int oss_num_threads;
  51 module_param(oss_num_threads, int, 0444);
  52 MODULE_PARM_DESC(oss_num_threads, "number of OSS service threads to start");
  53
  54 static int oss_num_create_threads;
  55 module_param(oss_num_create_threads, int, 0444);
  56 MODULE_PARM_DESC(oss_num_create_threads, "number of OSS create threads to start");
  57
  58 static char *oss_cpts;
  59 module_param(oss_cpts, charp, 0444);
  60 MODULE_PARM_DESC(oss_cpts, "CPU partitions OSS threads should run on");
  61
  62 static char *oss_io_cpts;
  63 module_param(oss_io_cpts, charp, 0444);
  64 MODULE_PARM_DESC(oss_io_cpts, "CPU partitions OSS IO threads should run on");
  65
  66 #define OST_WATCHDOG_TIMEOUT (obd_timeout * 1000)
  67
  68 static struct cfs_cpt_table     *ost_io_cptable;
  69
  70 static struct kset *oss_kset;
  71
  72 /* Sigh - really, this is an OSS, the _server_, not the _target_ */
  73 static int ost_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
  74 {
  75         static struct ptlrpc_service_conf       svc_conf;
  76         struct ost_obd *ost = &obd->u.ost;
  77         nodemask_t              *mask;
  78         int rc;
  79         ENTRY;
  80
  81         rc = lprocfs_kset_register(obd, &oss_kset);
  82         if (rc)
  83                 return rc;
  84
  85         mutex_init(&ost->ost_health_mutex);
  86
  87         svc_conf = (typeof(svc_conf)) {
  88                 .psc_name               = LUSTRE_OSS_NAME,
  89                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
  90                 .psc_buf                = {
  91                         .bc_nbufs               = OST_NBUFS,
  92                         .bc_buf_size            = OST_BUFSIZE,
  93                         .bc_req_max_size        = OST_MAXREQSIZE,
  94                         .bc_rep_max_size        = OST_MAXREPSIZE,
  95                         .bc_req_portal          = OST_REQUEST_PORTAL,
  96                         .bc_rep_portal          = OSC_REPLY_PORTAL,
  97                 },
  98                 .psc_thr                = {
  99                         .tc_thr_name            = "ll_ost",
 100                         .tc_thr_factor          = OSS_THR_FACTOR,
 101                         .tc_nthrs_init          = OSS_NTHRS_INIT,
 102                         .tc_nthrs_base          = OSS_NTHRS_BASE,
 103                         .tc_nthrs_max           = oss_max_threads,
 104                         .tc_nthrs_user          = oss_num_threads,
 105                         .tc_cpu_affinity        = 1,
 106                         .tc_ctx_tags            = LCT_DT_THREAD,
 107                 },
 108                 .psc_cpt                = {
 109                         .cc_pattern             = oss_cpts,
 110                 },
 111                 .psc_ops                = {
 112                         .so_req_handler         = tgt_request_handle,
 113                         .so_req_printer         = target_print_req,
 114                         .so_hpreq_handler       = ptlrpc_hpreq_handler,
 115                 },
 116         };
 117         ost->ost_service = ptlrpc_register_service(&svc_conf, oss_kset,
 118                                                    obd->obd_proc_entry);
 119         if (IS_ERR(ost->ost_service)) {
 120                 rc = PTR_ERR(ost->ost_service);
 121                 CERROR("failed to start service: %d\n", rc);
 122                 GOTO(out_lprocfs, rc);
 123         }
 124
 125         memset(&svc_conf, 0, sizeof(svc_conf));
 126         svc_conf = (typeof(svc_conf)) {
 127                 .psc_name               = "ost_create",
 128                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
 129                 .psc_buf                = {
 130                         .bc_nbufs               = OST_NBUFS,
 131                         .bc_buf_size            = OST_BUFSIZE,
 132                         .bc_req_max_size        = OST_MAXREQSIZE,
 133                         .bc_rep_max_size        = OST_MAXREPSIZE,
 134                         .bc_req_portal          = OST_CREATE_PORTAL,
 135                         .bc_rep_portal          = OSC_REPLY_PORTAL,
 136                 },
 137                 .psc_thr                = {
 138                         .tc_thr_name            = "ll_ost_create",
 139                         .tc_thr_factor          = OSS_CR_THR_FACTOR,
 140                         .tc_nthrs_init          = OSS_CR_NTHRS_INIT,
 141                         .tc_nthrs_base          = OSS_CR_NTHRS_BASE,
 142                         .tc_nthrs_max           = OSS_CR_NTHRS_MAX,
 143                         .tc_nthrs_user          = oss_num_create_threads,
 144                         .tc_cpu_affinity        = 1,
 145                         .tc_ctx_tags            = LCT_DT_THREAD,
 146                 },
 147                 .psc_cpt                = {
 148                         .cc_pattern             = oss_cpts,
 149                 },
 150                 .psc_ops                = {
 151                         .so_req_handler         = tgt_request_handle,
 152                         .so_req_printer         = target_print_req,
 153                 },
 154         };
 155         ost->ost_create_service = ptlrpc_register_service(&svc_conf, oss_kset,
 156                                                           obd->obd_proc_entry);
 157         if (IS_ERR(ost->ost_create_service)) {
 158                 rc = PTR_ERR(ost->ost_create_service);
 159                 CERROR("failed to start OST create service: %d\n", rc);
 160                 GOTO(out_service, rc);
 161         }
 162
 163         mask = cfs_cpt_nodemask(cfs_cpt_table, CFS_CPT_ANY);
 164         /* event CPT feature is disabled in libcfs level by set partition
 165          * number to 1, we still want to set node affinity for io service */
 166         if (cfs_cpt_number(cfs_cpt_table) == 1 && nodes_weight(*mask) > 1) {
 167                 int     cpt = 0;
 168                 int     i;
 169
 170                 ost_io_cptable = cfs_cpt_table_alloc(nodes_weight(*mask));
 171                 for_each_node_mask(i, *mask) {
 172                         if (ost_io_cptable == NULL) {
 173                                 CWARN("OSS failed to create CPT table\n");
 174                                 break;
 175                         }
 176
 177                         rc = cfs_cpt_set_node(ost_io_cptable, cpt++, i);
 178                         if (!rc) {
 179                                 CWARN("OSS Failed to set node %d for"
 180                                       "IO CPT table\n", i);
 181                                 cfs_cpt_table_free(ost_io_cptable);
 182                                 ost_io_cptable = NULL;
 183                                 break;
 184                         }
 185                 }
 186         }
 187
 188         memset(&svc_conf, 0, sizeof(svc_conf));
 189         svc_conf = (typeof(svc_conf)) {
 190                 .psc_name               = "ost_io",
 191                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
 192                 .psc_buf                = {
 193                         .bc_nbufs               = OST_NBUFS,
 194                         .bc_buf_size            = OST_IO_BUFSIZE,
 195                         .bc_req_max_size        = OST_IO_MAXREQSIZE,
 196                         .bc_rep_max_size        = OST_IO_MAXREPSIZE,
 197                         .bc_req_portal          = OST_IO_PORTAL,
 198                         .bc_rep_portal          = OSC_REPLY_PORTAL,
 199                 },
 200                 .psc_thr                = {
 201                         .tc_thr_name            = "ll_ost_io",
 202                         .tc_thr_factor          = OSS_THR_FACTOR,
 203                         .tc_nthrs_init          = OSS_NTHRS_INIT,
 204                         .tc_nthrs_base          = OSS_NTHRS_BASE,
 205                         .tc_nthrs_max           = oss_max_threads,
 206                         .tc_nthrs_user          = oss_num_threads,
 207                         .tc_cpu_affinity        = 1,
 208                         .tc_ctx_tags            = LCT_DT_THREAD,
 209                 },
 210                 .psc_cpt                = {
 211                         .cc_cptable             = ost_io_cptable,
 212                         .cc_pattern             = ost_io_cptable == NULL ?
 213                                                   oss_io_cpts : NULL,
 214                 },
 215                 .psc_ops                = {
 216                         .so_thr_init            = tgt_io_thread_init,
 217                         .so_thr_done            = tgt_io_thread_done,
 218                         .so_req_handler         = tgt_request_handle,
 219                         .so_hpreq_handler       = tgt_hpreq_handler,
 220                         .so_req_printer         = target_print_req,
 221                 },
 222         };
 223         ost->ost_io_service = ptlrpc_register_service(&svc_conf, oss_kset,
 224                                                       obd->obd_proc_entry);
 225         if (IS_ERR(ost->ost_io_service)) {
 226                 rc = PTR_ERR(ost->ost_io_service);
 227                 CERROR("failed to start OST I/O service: %d\n", rc);
 228                 ost->ost_io_service = NULL;
 229                 GOTO(out_create, rc);
 230         }
 231
 232         memset(&svc_conf, 0, sizeof(svc_conf));
 233         svc_conf = (typeof(svc_conf)) {
 234                 .psc_name               = "ost_seq",
 235                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
 236                 .psc_buf                = {
 237                         .bc_nbufs               = OST_NBUFS,
 238                         .bc_buf_size            = OST_BUFSIZE,
 239                         .bc_req_max_size        = OST_MAXREQSIZE,
 240                         .bc_rep_max_size        = OST_MAXREPSIZE,
 241                         .bc_req_portal          = SEQ_DATA_PORTAL,
 242                         .bc_rep_portal          = OSC_REPLY_PORTAL,
 243                 },
 244                 .psc_thr                = {
 245                         .tc_thr_name            = "ll_ost_seq",
 246                         .tc_thr_factor          = OSS_CR_THR_FACTOR,
 247                         .tc_nthrs_init          = OSS_CR_NTHRS_INIT,
 248                         .tc_nthrs_base          = OSS_CR_NTHRS_BASE,
 249                         .tc_nthrs_max           = OSS_CR_NTHRS_MAX,
 250                         .tc_nthrs_user          = oss_num_create_threads,
 251                         .tc_cpu_affinity        = 1,
 252                         .tc_ctx_tags            = LCT_DT_THREAD,
 253                 },
 254
 255                 .psc_cpt                = {
 256                         .cc_pattern          = oss_cpts,
 257                 },
 258                 .psc_ops                = {
 259                         .so_req_handler         = tgt_request_handle,
 260                         .so_req_printer         = target_print_req,
 261                         .so_hpreq_handler       = NULL,
 262                 },
 263         };
 264         ost->ost_seq_service = ptlrpc_register_service(&svc_conf, oss_kset,
 265                                                       obd->obd_proc_entry);
 266         if (IS_ERR(ost->ost_seq_service)) {
 267                 rc = PTR_ERR(ost->ost_seq_service);
 268                 CERROR("failed to start OST seq service: %d\n", rc);
 269                 ost->ost_seq_service = NULL;
 270                 GOTO(out_io, rc);
 271         }
 272
 273         /* Object update service */
 274         memset(&svc_conf, 0, sizeof(svc_conf));
 275         svc_conf = (typeof(svc_conf)) {
 276                 .psc_name               = "ost_out",
 277                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
 278                 .psc_buf                = {
 279                         .bc_nbufs               = OST_NBUFS,
 280                         .bc_buf_size            = OUT_BUFSIZE,
 281                         .bc_req_max_size        = OUT_MAXREQSIZE,
 282                         .bc_rep_max_size        = OUT_MAXREPSIZE,
 283                         .bc_req_portal          = OUT_PORTAL,
 284                         .bc_rep_portal          = OSC_REPLY_PORTAL,
 285                 },
 286                 /*
 287                  * We'd like to have a mechanism to set this on a per-device
 288                  * basis, but alas...
 289                  */
 290                 .psc_thr                = {
 291                         .tc_thr_name            = "ll_ost_out",
 292                         .tc_thr_factor          = OSS_CR_THR_FACTOR,
 293                         .tc_nthrs_init          = OSS_CR_NTHRS_INIT,
 294                         .tc_nthrs_base          = OSS_CR_NTHRS_BASE,
 295                         .tc_nthrs_max           = OSS_CR_NTHRS_MAX,
 296                         .tc_nthrs_user          = oss_num_create_threads,
 297                         .tc_cpu_affinity        = 1,
 298                         .tc_ctx_tags            = LCT_MD_THREAD |
 299                                                   LCT_DT_THREAD,
 300                 },
 301                 .psc_cpt                = {
 302                         .cc_pattern             = oss_cpts,
 303                 },
 304                 .psc_ops                = {
 305                         .so_req_handler         = tgt_request_handle,
 306                         .so_req_printer         = target_print_req,
 307                         .so_hpreq_handler       = NULL,
 308                 },
 309         };
 310         ost->ost_out_service = ptlrpc_register_service(&svc_conf, oss_kset,
 311                                                        obd->obd_proc_entry);
 312         if (IS_ERR(ost->ost_out_service)) {
 313                 rc = PTR_ERR(ost->ost_out_service);
 314                 CERROR("failed to start out service: %d\n", rc);
 315                 ost->ost_out_service = NULL;
 316                 GOTO(out_seq, rc);
 317         }
 318
 319         ping_evictor_start();
 320
 321         RETURN(0);
 322
 323 out_seq:
 324         ptlrpc_unregister_service(ost->ost_seq_service);
 325         ost->ost_seq_service = NULL;
 326 out_io:
 327         ptlrpc_unregister_service(ost->ost_io_service);
 328         ost->ost_io_service = NULL;
 329 out_create:
 330         ptlrpc_unregister_service(ost->ost_create_service);
 331         ost->ost_create_service = NULL;
 332 out_service:
 333         ptlrpc_unregister_service(ost->ost_service);
 334         ost->ost_service = NULL;
 335 out_lprocfs:
 336         lprocfs_kset_unregister(obd, oss_kset);
 337         RETURN(rc);
 338 }
 339
 340 static int ost_cleanup(struct obd_device *obd)
 341 {
 342         struct ost_obd *ost = &obd->u.ost;
 343         int err = 0;
 344         ENTRY;
 345
 346         ping_evictor_stop();
 347
 348         /* there is no recovery for OST OBD, all recovery is controlled by
 349          * obdfilter OBD */
 350         LASSERT(obd->obd_recovering == 0);
 351         mutex_lock(&ost->ost_health_mutex);
 352         ptlrpc_unregister_service(ost->ost_service);
 353         ptlrpc_unregister_service(ost->ost_create_service);
 354         ptlrpc_unregister_service(ost->ost_io_service);
 355         ptlrpc_unregister_service(ost->ost_seq_service);
 356         ptlrpc_unregister_service(ost->ost_out_service);
 357
 358         ost->ost_service = NULL;
 359         ost->ost_create_service = NULL;
 360         ost->ost_io_service = NULL;
 361         ost->ost_seq_service = NULL;
 362         ost->ost_out_service = NULL;
 363
 364         mutex_unlock(&ost->ost_health_mutex);
 365
 366         lprocfs_kset_unregister(obd, oss_kset);
 367
 368         if (ost_io_cptable != NULL) {
 369                 cfs_cpt_table_free(ost_io_cptable);
 370                 ost_io_cptable = NULL;
 371         }
 372
 373         RETURN(err);
 374 }
 375
 376 static int ost_health_check(const struct lu_env *env, struct obd_device *obd)
 377 {
 378         struct ost_obd *ost = &obd->u.ost;
 379         int rc = 0;
 380
 381         mutex_lock(&ost->ost_health_mutex);
 382         rc |= ptlrpc_service_health_check(ost->ost_service);
 383         rc |= ptlrpc_service_health_check(ost->ost_create_service);
 384         rc |= ptlrpc_service_health_check(ost->ost_io_service);
 385         rc |= ptlrpc_service_health_check(ost->ost_seq_service);
 386         mutex_unlock(&ost->ost_health_mutex);
 387
 388         return rc != 0 ? 1 : 0;
 389 }
 390
 391 /* use obd ops to offer management infrastructure */
 392 static struct obd_ops ost_obd_ops = {
 393         .o_owner        = THIS_MODULE,
 394         .o_setup        = ost_setup,
 395         .o_cleanup      = ost_cleanup,
 396         .o_health_check = ost_health_check,
 397 };
 398
 399
 400 static int __init ost_init(void)
 401 {
 402         int rc;
 403
 404         ENTRY;
 405
 406         rc = class_register_type(&ost_obd_ops, NULL, true, NULL,
 407                                  LUSTRE_OSS_NAME, NULL);
 408
 409         RETURN(rc);
 410 }
 411
 412 static void __exit ost_exit(void)
 413 {
 414         class_unregister_type(LUSTRE_OSS_NAME);
 415 }
 416
 417 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
 418 MODULE_DESCRIPTION("Lustre Object Storage Target (OST)");
 419 MODULE_VERSION(LUSTRE_VERSION_STRING);
 420 MODULE_LICENSE("GPL");
 421
 422 module_init(ost_init);
 423 module_exit(ost_exit);