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 /* Sigh - really, this is an OSS, the _server_, not the _target_ */
  71 static int ost_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
  72 {
  73         static struct ptlrpc_service_conf       svc_conf;
  74         struct ost_obd *ost = &obd->u.ost;
  75         nodemask_t              *mask;
  76         int rc;
  77         ENTRY;
  78
  79         lprocfs_obd_setup(obd, true);
  80
  81         mutex_init(&ost->ost_health_mutex);
  82
  83         svc_conf = (typeof(svc_conf)) {
  84                 .psc_name               = LUSTRE_OSS_NAME,
  85                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
  86                 .psc_buf                = {
  87                         .bc_nbufs               = OST_NBUFS,
  88                         .bc_buf_size            = OST_BUFSIZE,
  89                         .bc_req_max_size        = OST_MAXREQSIZE,
  90                         .bc_rep_max_size        = OST_MAXREPSIZE,
  91                         .bc_req_portal          = OST_REQUEST_PORTAL,
  92                         .bc_rep_portal          = OSC_REPLY_PORTAL,
  93                 },
  94                 .psc_thr                = {
  95                         .tc_thr_name            = "ll_ost",
  96                         .tc_thr_factor          = OSS_THR_FACTOR,
  97                         .tc_nthrs_init          = OSS_NTHRS_INIT,
  98                         .tc_nthrs_base          = OSS_NTHRS_BASE,
  99                         .tc_nthrs_max           = oss_max_threads,
 100                         .tc_nthrs_user          = oss_num_threads,
 101                         .tc_cpu_affinity        = 1,
 102                         .tc_ctx_tags            = LCT_DT_THREAD,
 103                 },
 104                 .psc_cpt                = {
 105                         .cc_pattern             = oss_cpts,
 106                 },
 107                 .psc_ops                = {
 108                         .so_req_handler         = tgt_request_handle,
 109                         .so_req_printer         = target_print_req,
 110                         .so_hpreq_handler       = ptlrpc_hpreq_handler,
 111                 },
 112         };
 113         ost->ost_service = ptlrpc_register_service(&svc_conf,
 114                                                    obd->obd_proc_entry);
 115         if (IS_ERR(ost->ost_service)) {
 116                 rc = PTR_ERR(ost->ost_service);
 117                 CERROR("failed to start service: %d\n", rc);
 118                 GOTO(out_lprocfs, rc);
 119         }
 120
 121         memset(&svc_conf, 0, sizeof(svc_conf));
 122         svc_conf = (typeof(svc_conf)) {
 123                 .psc_name               = "ost_create",
 124                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
 125                 .psc_buf                = {
 126                         .bc_nbufs               = OST_NBUFS,
 127                         .bc_buf_size            = OST_BUFSIZE,
 128                         .bc_req_max_size        = OST_MAXREQSIZE,
 129                         .bc_rep_max_size        = OST_MAXREPSIZE,
 130                         .bc_req_portal          = OST_CREATE_PORTAL,
 131                         .bc_rep_portal          = OSC_REPLY_PORTAL,
 132                 },
 133                 .psc_thr                = {
 134                         .tc_thr_name            = "ll_ost_create",
 135                         .tc_thr_factor          = OSS_CR_THR_FACTOR,
 136                         .tc_nthrs_init          = OSS_CR_NTHRS_INIT,
 137                         .tc_nthrs_base          = OSS_CR_NTHRS_BASE,
 138                         .tc_nthrs_max           = OSS_CR_NTHRS_MAX,
 139                         .tc_nthrs_user          = oss_num_create_threads,
 140                         .tc_cpu_affinity        = 1,
 141                         .tc_ctx_tags            = LCT_DT_THREAD,
 142                 },
 143                 .psc_cpt                = {
 144                         .cc_pattern             = oss_cpts,
 145                 },
 146                 .psc_ops                = {
 147                         .so_req_handler         = tgt_request_handle,
 148                         .so_req_printer         = target_print_req,
 149                 },
 150         };
 151         ost->ost_create_service = ptlrpc_register_service(&svc_conf,
 152                                                           obd->obd_proc_entry);
 153         if (IS_ERR(ost->ost_create_service)) {
 154                 rc = PTR_ERR(ost->ost_create_service);
 155                 CERROR("failed to start OST create service: %d\n", rc);
 156                 GOTO(out_service, rc);
 157         }
 158
 159         mask = cfs_cpt_nodemask(cfs_cpt_table, CFS_CPT_ANY);
 160         /* event CPT feature is disabled in libcfs level by set partition
 161          * number to 1, we still want to set node affinity for io service */
 162         if (cfs_cpt_number(cfs_cpt_table) == 1 && nodes_weight(*mask) > 1) {
 163                 int     cpt = 0;
 164                 int     i;
 165
 166                 ost_io_cptable = cfs_cpt_table_alloc(nodes_weight(*mask));
 167                 for_each_node_mask(i, *mask) {
 168                         if (ost_io_cptable == NULL) {
 169                                 CWARN("OSS failed to create CPT table\n");
 170                                 break;
 171                         }
 172
 173                         rc = cfs_cpt_set_node(ost_io_cptable, cpt++, i);
 174                         if (!rc) {
 175                                 CWARN("OSS Failed to set node %d for"
 176                                       "IO CPT table\n", i);
 177                                 cfs_cpt_table_free(ost_io_cptable);
 178                                 ost_io_cptable = NULL;
 179                                 break;
 180                         }
 181                 }
 182         }
 183
 184         memset(&svc_conf, 0, sizeof(svc_conf));
 185         svc_conf = (typeof(svc_conf)) {
 186                 .psc_name               = "ost_io",
 187                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
 188                 .psc_buf                = {
 189                         .bc_nbufs               = OST_NBUFS,
 190                         .bc_buf_size            = OST_IO_BUFSIZE,
 191                         .bc_req_max_size        = OST_IO_MAXREQSIZE,
 192                         .bc_rep_max_size        = OST_IO_MAXREPSIZE,
 193                         .bc_req_portal          = OST_IO_PORTAL,
 194                         .bc_rep_portal          = OSC_REPLY_PORTAL,
 195                 },
 196                 .psc_thr                = {
 197                         .tc_thr_name            = "ll_ost_io",
 198                         .tc_thr_factor          = OSS_THR_FACTOR,
 199                         .tc_nthrs_init          = OSS_NTHRS_INIT,
 200                         .tc_nthrs_base          = OSS_NTHRS_BASE,
 201                         .tc_nthrs_max           = oss_max_threads,
 202                         .tc_nthrs_user          = oss_num_threads,
 203                         .tc_cpu_affinity        = 1,
 204                         .tc_ctx_tags            = LCT_DT_THREAD,
 205                 },
 206                 .psc_cpt                = {
 207                         .cc_cptable             = ost_io_cptable,
 208                         .cc_pattern             = ost_io_cptable == NULL ?
 209                                                   oss_io_cpts : NULL,
 210                 },
 211                 .psc_ops                = {
 212                         .so_thr_init            = tgt_io_thread_init,
 213                         .so_thr_done            = tgt_io_thread_done,
 214                         .so_req_handler         = tgt_request_handle,
 215                         .so_hpreq_handler       = tgt_hpreq_handler,
 216                         .so_req_printer         = target_print_req,
 217                 },
 218         };
 219         ost->ost_io_service = ptlrpc_register_service(&svc_conf,
 220                                                       obd->obd_proc_entry);
 221         if (IS_ERR(ost->ost_io_service)) {
 222                 rc = PTR_ERR(ost->ost_io_service);
 223                 CERROR("failed to start OST I/O service: %d\n", rc);
 224                 ost->ost_io_service = NULL;
 225                 GOTO(out_create, rc);
 226         }
 227
 228         memset(&svc_conf, 0, sizeof(svc_conf));
 229         svc_conf = (typeof(svc_conf)) {
 230                 .psc_name               = "ost_seq",
 231                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
 232                 .psc_buf                = {
 233                         .bc_nbufs               = OST_NBUFS,
 234                         .bc_buf_size            = OST_BUFSIZE,
 235                         .bc_req_max_size        = OST_MAXREQSIZE,
 236                         .bc_rep_max_size        = OST_MAXREPSIZE,
 237                         .bc_req_portal          = SEQ_DATA_PORTAL,
 238                         .bc_rep_portal          = OSC_REPLY_PORTAL,
 239                 },
 240                 .psc_thr                = {
 241                         .tc_thr_name            = "ll_ost_seq",
 242                         .tc_thr_factor          = OSS_CR_THR_FACTOR,
 243                         .tc_nthrs_init          = OSS_CR_NTHRS_INIT,
 244                         .tc_nthrs_base          = OSS_CR_NTHRS_BASE,
 245                         .tc_nthrs_max           = OSS_CR_NTHRS_MAX,
 246                         .tc_nthrs_user          = oss_num_create_threads,
 247                         .tc_cpu_affinity        = 1,
 248                         .tc_ctx_tags            = LCT_DT_THREAD,
 249                 },
 250
 251                 .psc_cpt                = {
 252                         .cc_pattern          = oss_cpts,
 253                 },
 254                 .psc_ops                = {
 255                         .so_req_handler         = tgt_request_handle,
 256                         .so_req_printer         = target_print_req,
 257                         .so_hpreq_handler       = NULL,
 258                 },
 259         };
 260         ost->ost_seq_service = ptlrpc_register_service(&svc_conf,
 261                                                       obd->obd_proc_entry);
 262         if (IS_ERR(ost->ost_seq_service)) {
 263                 rc = PTR_ERR(ost->ost_seq_service);
 264                 CERROR("failed to start OST seq service: %d\n", rc);
 265                 ost->ost_seq_service = NULL;
 266                 GOTO(out_io, rc);
 267         }
 268
 269         /* Object update service */
 270         memset(&svc_conf, 0, sizeof(svc_conf));
 271         svc_conf = (typeof(svc_conf)) {
 272                 .psc_name               = "ost_out",
 273                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
 274                 .psc_buf                = {
 275                         .bc_nbufs               = OST_NBUFS,
 276                         .bc_buf_size            = OUT_BUFSIZE,
 277                         .bc_req_max_size        = OUT_MAXREQSIZE,
 278                         .bc_rep_max_size        = OUT_MAXREPSIZE,
 279                         .bc_req_portal          = OUT_PORTAL,
 280                         .bc_rep_portal          = OSC_REPLY_PORTAL,
 281                 },
 282                 /*
 283                  * We'd like to have a mechanism to set this on a per-device
 284                  * basis, but alas...
 285                  */
 286                 .psc_thr                = {
 287                         .tc_thr_name            = "ll_ost_out",
 288                         .tc_thr_factor          = OSS_CR_THR_FACTOR,
 289                         .tc_nthrs_init          = OSS_CR_NTHRS_INIT,
 290                         .tc_nthrs_base          = OSS_CR_NTHRS_BASE,
 291                         .tc_nthrs_max           = OSS_CR_NTHRS_MAX,
 292                         .tc_nthrs_user          = oss_num_create_threads,
 293                         .tc_cpu_affinity        = 1,
 294                         .tc_ctx_tags            = LCT_MD_THREAD |
 295                                                   LCT_DT_THREAD,
 296                 },
 297                 .psc_cpt                = {
 298                         .cc_pattern             = oss_cpts,
 299                 },
 300                 .psc_ops                = {
 301                         .so_req_handler         = tgt_request_handle,
 302                         .so_req_printer         = target_print_req,
 303                         .so_hpreq_handler       = NULL,
 304                 },
 305         };
 306         ost->ost_out_service = ptlrpc_register_service(&svc_conf,
 307                                                        obd->obd_proc_entry);
 308         if (IS_ERR(ost->ost_out_service)) {
 309                 rc = PTR_ERR(ost->ost_out_service);
 310                 CERROR("failed to start out service: %d\n", rc);
 311                 ost->ost_out_service = NULL;
 312                 GOTO(out_seq, rc);
 313         }
 314
 315         ping_evictor_start();
 316
 317         RETURN(0);
 318
 319 out_seq:
 320         ptlrpc_unregister_service(ost->ost_seq_service);
 321         ost->ost_seq_service = NULL;
 322 out_io:
 323         ptlrpc_unregister_service(ost->ost_io_service);
 324         ost->ost_io_service = NULL;
 325 out_create:
 326         ptlrpc_unregister_service(ost->ost_create_service);
 327         ost->ost_create_service = NULL;
 328 out_service:
 329         ptlrpc_unregister_service(ost->ost_service);
 330         ost->ost_service = NULL;
 331 out_lprocfs:
 332         lprocfs_obd_cleanup(obd);
 333         RETURN(rc);
 334 }
 335
 336 static int ost_cleanup(struct obd_device *obd)
 337 {
 338         struct ost_obd *ost = &obd->u.ost;
 339         int err = 0;
 340         ENTRY;
 341
 342         ping_evictor_stop();
 343
 344         /* there is no recovery for OST OBD, all recovery is controlled by
 345          * obdfilter OBD */
 346         LASSERT(obd->obd_recovering == 0);
 347         mutex_lock(&ost->ost_health_mutex);
 348         ptlrpc_unregister_service(ost->ost_service);
 349         ptlrpc_unregister_service(ost->ost_create_service);
 350         ptlrpc_unregister_service(ost->ost_io_service);
 351         ptlrpc_unregister_service(ost->ost_seq_service);
 352         ptlrpc_unregister_service(ost->ost_out_service);
 353
 354         ost->ost_service = NULL;
 355         ost->ost_create_service = NULL;
 356         ost->ost_io_service = NULL;
 357         ost->ost_seq_service = NULL;
 358         ost->ost_out_service = NULL;
 359
 360         mutex_unlock(&ost->ost_health_mutex);
 361
 362         lprocfs_obd_cleanup(obd);
 363
 364         if (ost_io_cptable != NULL) {
 365                 cfs_cpt_table_free(ost_io_cptable);
 366                 ost_io_cptable = NULL;
 367         }
 368
 369         RETURN(err);
 370 }
 371
 372 static int ost_health_check(const struct lu_env *env, struct obd_device *obd)
 373 {
 374         struct ost_obd *ost = &obd->u.ost;
 375         int rc = 0;
 376
 377         mutex_lock(&ost->ost_health_mutex);
 378         rc |= ptlrpc_service_health_check(ost->ost_service);
 379         rc |= ptlrpc_service_health_check(ost->ost_create_service);
 380         rc |= ptlrpc_service_health_check(ost->ost_io_service);
 381         rc |= ptlrpc_service_health_check(ost->ost_seq_service);
 382         mutex_unlock(&ost->ost_health_mutex);
 383
 384         return rc != 0 ? 1 : 0;
 385 }
 386
 387 /* use obd ops to offer management infrastructure */
 388 static struct obd_ops ost_obd_ops = {
 389         .o_owner        = THIS_MODULE,
 390         .o_setup        = ost_setup,
 391         .o_cleanup      = ost_cleanup,
 392         .o_health_check = ost_health_check,
 393 };
 394
 395
 396 static int __init ost_init(void)
 397 {
 398         int rc;
 399
 400         ENTRY;
 401
 402         rc = class_register_type(&ost_obd_ops, NULL, true, NULL,
 403                                  LUSTRE_OSS_NAME, NULL);
 404
 405         RETURN(rc);
 406 }
 407
 408 static void __exit ost_exit(void)
 409 {
 410         class_unregister_type(LUSTRE_OSS_NAME);
 411 }
 412
 413 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
 414 MODULE_DESCRIPTION("Lustre Object Storage Target (OST)");
 415 MODULE_VERSION(LUSTRE_VERSION_STRING);
 416 MODULE_LICENSE("GPL");
 417
 418 module_init(ost_init);
 419 module_exit(ost_exit);