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.sun.com/software/products/lustre/docs/GPLv2.pdf
  19  *
  20  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  21  * CA 95054 USA or visit www.sun.com if you need additional information or
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2011, 2014, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  *
  36  * lustre/ost/ost_handler.c
  37  *
  38  * Author: Peter J. Braam <braam@clusterfs.com>
  39  * Author: Phil Schwan <phil@clusterfs.com>
  40  */
  41
  42 #define DEBUG_SUBSYSTEM S_OST
  43
  44 #include <linux/module.h>
  45 #include <lustre_dlm.h>
  46 #include <lprocfs_status.h>
  47 #include <obd_class.h>
  48 #include "ost_internal.h"
  49
  50 static int oss_num_threads;
  51 CFS_MODULE_PARM(oss_num_threads, "i", int, 0444,
  52                 "number of OSS service threads to start");
  53
  54 static int ost_num_threads;
  55 CFS_MODULE_PARM(ost_num_threads, "i", int, 0444,
  56                 "number of OST service threads to start (deprecated)");
  57
  58 static int oss_num_create_threads;
  59 CFS_MODULE_PARM(oss_num_create_threads, "i", int, 0444,
  60                 "number of OSS create threads to start");
  61
  62 static char *oss_cpts;
  63 CFS_MODULE_PARM(oss_cpts, "s", charp, 0444,
  64                 "CPU partitions OSS threads should run on");
  65
  66 static char *oss_io_cpts;
  67 CFS_MODULE_PARM(oss_io_cpts, "s", charp, 0444,
  68                 "CPU partitions OSS IO threads should run on");
  69
  70 #define OST_WATCHDOG_TIMEOUT (obd_timeout * 1000)
  71
  72 static struct cfs_cpt_table     *ost_io_cptable;
  73
  74 #ifdef CONFIG_PROC_FS
  75 LPROC_SEQ_FOPS_RO_TYPE(ost, uuid);
  76
  77 static struct lprocfs_vars lprocfs_ost_obd_vars[] = {
  78         { .name =       "uuid",
  79           .fops =       &ost_uuid_fops  },
  80         { NULL }
  81 };
  82 #endif /* CONFIG_PROC_FS */
  83
  84 /* Sigh - really, this is an OSS, the _server_, not the _target_ */
  85 static int ost_setup(struct obd_device *obd, struct lustre_cfg* lcfg)
  86 {
  87         static struct ptlrpc_service_conf       svc_conf;
  88         struct ost_obd *ost = &obd->u.ost;
  89         nodemask_t              *mask;
  90         int rc;
  91         ENTRY;
  92
  93 #ifdef CONFIG_PROC_FS
  94         obd->obd_vars = lprocfs_ost_obd_vars;
  95         lprocfs_obd_setup(obd);
  96 #endif
  97         mutex_init(&ost->ost_health_mutex);
  98
  99         svc_conf = (typeof(svc_conf)) {
 100                 .psc_name               = LUSTRE_OSS_NAME,
 101                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
 102                 .psc_buf                = {
 103                         .bc_nbufs               = OST_NBUFS,
 104                         .bc_buf_size            = OST_BUFSIZE,
 105                         .bc_req_max_size        = OST_MAXREQSIZE,
 106                         .bc_rep_max_size        = OST_MAXREPSIZE,
 107                         .bc_req_portal          = OST_REQUEST_PORTAL,
 108                         .bc_rep_portal          = OSC_REPLY_PORTAL,
 109                 },
 110                 .psc_thr                = {
 111                         .tc_thr_name            = "ll_ost",
 112                         .tc_thr_factor          = OSS_THR_FACTOR,
 113                         .tc_nthrs_init          = OSS_NTHRS_INIT,
 114                         .tc_nthrs_base          = OSS_NTHRS_BASE,
 115                         .tc_nthrs_max           = OSS_NTHRS_MAX,
 116                         .tc_nthrs_user          = oss_num_threads,
 117                         .tc_cpu_affinity        = 1,
 118                         .tc_ctx_tags            = LCT_DT_THREAD,
 119                 },
 120                 .psc_cpt                = {
 121                         .cc_pattern             = oss_cpts,
 122                 },
 123                 .psc_ops                = {
 124                         .so_req_handler         = tgt_request_handle,
 125                         .so_req_printer         = target_print_req,
 126                         .so_hpreq_handler       = ptlrpc_hpreq_handler,
 127                 },
 128         };
 129         ost->ost_service = ptlrpc_register_service(&svc_conf,
 130                                                    obd->obd_proc_entry);
 131         if (IS_ERR(ost->ost_service)) {
 132                 rc = PTR_ERR(ost->ost_service);
 133                 CERROR("failed to start service: %d\n", rc);
 134                 GOTO(out_lprocfs, rc);
 135         }
 136
 137         memset(&svc_conf, 0, sizeof(svc_conf));
 138         svc_conf = (typeof(svc_conf)) {
 139                 .psc_name               = "ost_create",
 140                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
 141                 .psc_buf                = {
 142                         .bc_nbufs               = OST_NBUFS,
 143                         .bc_buf_size            = OST_BUFSIZE,
 144                         .bc_req_max_size        = OST_MAXREQSIZE,
 145                         .bc_rep_max_size        = OST_MAXREPSIZE,
 146                         .bc_req_portal          = OST_CREATE_PORTAL,
 147                         .bc_rep_portal          = OSC_REPLY_PORTAL,
 148                 },
 149                 .psc_thr                = {
 150                         .tc_thr_name            = "ll_ost_create",
 151                         .tc_thr_factor          = OSS_CR_THR_FACTOR,
 152                         .tc_nthrs_init          = OSS_CR_NTHRS_INIT,
 153                         .tc_nthrs_base          = OSS_CR_NTHRS_BASE,
 154                         .tc_nthrs_max           = OSS_CR_NTHRS_MAX,
 155                         .tc_nthrs_user          = oss_num_create_threads,
 156                         .tc_cpu_affinity        = 1,
 157                         .tc_ctx_tags            = LCT_DT_THREAD,
 158                 },
 159                 .psc_cpt                = {
 160                         .cc_pattern             = oss_cpts,
 161                 },
 162                 .psc_ops                = {
 163                         .so_req_handler         = tgt_request_handle,
 164                         .so_req_printer         = target_print_req,
 165                 },
 166         };
 167         ost->ost_create_service = ptlrpc_register_service(&svc_conf,
 168                                                           obd->obd_proc_entry);
 169         if (IS_ERR(ost->ost_create_service)) {
 170                 rc = PTR_ERR(ost->ost_create_service);
 171                 CERROR("failed to start OST create service: %d\n", rc);
 172                 GOTO(out_service, rc);
 173         }
 174
 175         mask = cfs_cpt_nodemask(cfs_cpt_table, CFS_CPT_ANY);
 176         /* event CPT feature is disabled in libcfs level by set partition
 177          * number to 1, we still want to set node affinity for io service */
 178         if (cfs_cpt_number(cfs_cpt_table) == 1 && nodes_weight(*mask) > 1) {
 179                 int     cpt = 0;
 180                 int     i;
 181
 182                 ost_io_cptable = cfs_cpt_table_alloc(nodes_weight(*mask));
 183                 for_each_node_mask(i, *mask) {
 184                         if (ost_io_cptable == NULL) {
 185                                 CWARN("OSS failed to create CPT table\n");
 186                                 break;
 187                         }
 188
 189                         rc = cfs_cpt_set_node(ost_io_cptable, cpt++, i);
 190                         if (!rc) {
 191                                 CWARN("OSS Failed to set node %d for"
 192                                       "IO CPT table\n", i);
 193                                 cfs_cpt_table_free(ost_io_cptable);
 194                                 ost_io_cptable = NULL;
 195                                 break;
 196                         }
 197                 }
 198         }
 199
 200         memset(&svc_conf, 0, sizeof(svc_conf));
 201         svc_conf = (typeof(svc_conf)) {
 202                 .psc_name               = "ost_io",
 203                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
 204                 .psc_buf                = {
 205                         .bc_nbufs               = OST_NBUFS,
 206                         .bc_buf_size            = OST_IO_BUFSIZE,
 207                         .bc_req_max_size        = OST_IO_MAXREQSIZE,
 208                         .bc_rep_max_size        = OST_IO_MAXREPSIZE,
 209                         .bc_req_portal          = OST_IO_PORTAL,
 210                         .bc_rep_portal          = OSC_REPLY_PORTAL,
 211                 },
 212                 .psc_thr                = {
 213                         .tc_thr_name            = "ll_ost_io",
 214                         .tc_thr_factor          = OSS_THR_FACTOR,
 215                         .tc_nthrs_init          = OSS_NTHRS_INIT,
 216                         .tc_nthrs_base          = OSS_NTHRS_BASE,
 217                         .tc_nthrs_max           = OSS_NTHRS_MAX,
 218                         .tc_nthrs_user          = oss_num_threads,
 219                         .tc_cpu_affinity        = 1,
 220                         .tc_ctx_tags            = LCT_DT_THREAD,
 221                 },
 222                 .psc_cpt                = {
 223                         .cc_cptable             = ost_io_cptable,
 224                         .cc_pattern             = ost_io_cptable == NULL ?
 225                                                   oss_io_cpts : NULL,
 226                 },
 227                 .psc_ops                = {
 228                         .so_thr_init            = tgt_io_thread_init,
 229                         .so_thr_done            = tgt_io_thread_done,
 230                         .so_req_handler         = tgt_request_handle,
 231                         .so_hpreq_handler       = tgt_hpreq_handler,
 232                         .so_req_printer         = target_print_req,
 233                 },
 234         };
 235         ost->ost_io_service = ptlrpc_register_service(&svc_conf,
 236                                                       obd->obd_proc_entry);
 237         if (IS_ERR(ost->ost_io_service)) {
 238                 rc = PTR_ERR(ost->ost_io_service);
 239                 CERROR("failed to start OST I/O service: %d\n", rc);
 240                 ost->ost_io_service = NULL;
 241                 GOTO(out_create, rc);
 242         }
 243
 244         memset(&svc_conf, 0, sizeof(svc_conf));
 245         svc_conf = (typeof(svc_conf)) {
 246                 .psc_name               = "ost_seq",
 247                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
 248                 .psc_buf                = {
 249                         .bc_nbufs               = OST_NBUFS,
 250                         .bc_buf_size            = OST_BUFSIZE,
 251                         .bc_req_max_size        = OST_MAXREQSIZE,
 252                         .bc_rep_max_size        = OST_MAXREPSIZE,
 253                         .bc_req_portal          = SEQ_DATA_PORTAL,
 254                         .bc_rep_portal          = OSC_REPLY_PORTAL,
 255                 },
 256                 .psc_thr                = {
 257                         .tc_thr_name            = "ll_ost_seq",
 258                         .tc_thr_factor          = OSS_CR_THR_FACTOR,
 259                         .tc_nthrs_init          = OSS_CR_NTHRS_INIT,
 260                         .tc_nthrs_base          = OSS_CR_NTHRS_BASE,
 261                         .tc_nthrs_max           = OSS_CR_NTHRS_MAX,
 262                         .tc_nthrs_user          = oss_num_create_threads,
 263                         .tc_cpu_affinity        = 1,
 264                         .tc_ctx_tags            = LCT_DT_THREAD,
 265                 },
 266
 267                 .psc_cpt                = {
 268                         .cc_pattern          = oss_cpts,
 269                 },
 270                 .psc_ops                = {
 271                         .so_req_handler         = tgt_request_handle,
 272                         .so_req_printer         = target_print_req,
 273                         .so_hpreq_handler       = NULL,
 274                 },
 275         };
 276         ost->ost_seq_service = ptlrpc_register_service(&svc_conf,
 277                                                       obd->obd_proc_entry);
 278         if (IS_ERR(ost->ost_seq_service)) {
 279                 rc = PTR_ERR(ost->ost_seq_service);
 280                 CERROR("failed to start OST seq service: %d\n", rc);
 281                 ost->ost_seq_service = NULL;
 282                 GOTO(out_io, rc);
 283         }
 284
 285         /* Object update service */
 286         memset(&svc_conf, 0, sizeof(svc_conf));
 287         svc_conf = (typeof(svc_conf)) {
 288                 .psc_name               = "ost_out",
 289                 .psc_watchdog_factor    = OSS_SERVICE_WATCHDOG_FACTOR,
 290                 .psc_buf                = {
 291                         .bc_nbufs               = OST_NBUFS,
 292                         .bc_buf_size            = OUT_BUFSIZE,
 293                         .bc_req_max_size        = OUT_MAXREQSIZE,
 294                         .bc_rep_max_size        = OUT_MAXREPSIZE,
 295                         .bc_req_portal          = OUT_PORTAL,
 296                         .bc_rep_portal          = OSC_REPLY_PORTAL,
 297                 },
 298                 /*
 299                  * We'd like to have a mechanism to set this on a per-device
 300                  * basis, but alas...
 301                  */
 302                 .psc_thr                = {
 303                         .tc_thr_name            = "ll_ost_out",
 304                         .tc_thr_factor          = OSS_CR_THR_FACTOR,
 305                         .tc_nthrs_init          = OSS_CR_NTHRS_INIT,
 306                         .tc_nthrs_base          = OSS_CR_NTHRS_BASE,
 307                         .tc_nthrs_max           = OSS_CR_NTHRS_MAX,
 308                         .tc_nthrs_user          = oss_num_create_threads,
 309                         .tc_cpu_affinity        = 1,
 310                         .tc_ctx_tags            = LCT_MD_THREAD |
 311                                                   LCT_DT_THREAD,
 312                 },
 313                 .psc_cpt                = {
 314                         .cc_pattern             = oss_cpts,
 315                 },
 316                 .psc_ops                = {
 317                         .so_req_handler         = tgt_request_handle,
 318                         .so_req_printer         = target_print_req,
 319                         .so_hpreq_handler       = NULL,
 320                 },
 321         };
 322         ost->ost_out_service = ptlrpc_register_service(&svc_conf,
 323                                                        obd->obd_proc_entry);
 324         if (IS_ERR(ost->ost_out_service)) {
 325                 rc = PTR_ERR(ost->ost_out_service);
 326                 CERROR("failed to start out service: %d\n", rc);
 327                 ost->ost_out_service = NULL;
 328                 GOTO(out_seq, rc);
 329         }
 330
 331         ping_evictor_start();
 332
 333         RETURN(0);
 334
 335 out_seq:
 336         ptlrpc_unregister_service(ost->ost_seq_service);
 337         ost->ost_seq_service = NULL;
 338 out_io:
 339         ptlrpc_unregister_service(ost->ost_io_service);
 340         ost->ost_io_service = NULL;
 341 out_create:
 342         ptlrpc_unregister_service(ost->ost_create_service);
 343         ost->ost_create_service = NULL;
 344 out_service:
 345         ptlrpc_unregister_service(ost->ost_service);
 346         ost->ost_service = NULL;
 347 out_lprocfs:
 348         lprocfs_obd_cleanup(obd);
 349         RETURN(rc);
 350 }
 351
 352 static int ost_cleanup(struct obd_device *obd)
 353 {
 354         struct ost_obd *ost = &obd->u.ost;
 355         int err = 0;
 356         ENTRY;
 357
 358         ping_evictor_stop();
 359
 360         /* there is no recovery for OST OBD, all recovery is controlled by
 361          * obdfilter OBD */
 362         LASSERT(obd->obd_recovering == 0);
 363         mutex_lock(&ost->ost_health_mutex);
 364         ptlrpc_unregister_service(ost->ost_service);
 365         ptlrpc_unregister_service(ost->ost_create_service);
 366         ptlrpc_unregister_service(ost->ost_io_service);
 367         ptlrpc_unregister_service(ost->ost_seq_service);
 368         ptlrpc_unregister_service(ost->ost_out_service);
 369
 370         ost->ost_service = NULL;
 371         ost->ost_create_service = NULL;
 372         ost->ost_io_service = NULL;
 373         ost->ost_seq_service = NULL;
 374         ost->ost_out_service = NULL;
 375
 376         mutex_unlock(&ost->ost_health_mutex);
 377
 378         lprocfs_obd_cleanup(obd);
 379
 380         if (ost_io_cptable != NULL) {
 381                 cfs_cpt_table_free(ost_io_cptable);
 382                 ost_io_cptable = NULL;
 383         }
 384
 385         RETURN(err);
 386 }
 387
 388 static int ost_health_check(const struct lu_env *env, struct obd_device *obd)
 389 {
 390         struct ost_obd *ost = &obd->u.ost;
 391         int rc = 0;
 392
 393         mutex_lock(&ost->ost_health_mutex);
 394         rc |= ptlrpc_service_health_check(ost->ost_service);
 395         rc |= ptlrpc_service_health_check(ost->ost_create_service);
 396         rc |= ptlrpc_service_health_check(ost->ost_io_service);
 397         rc |= ptlrpc_service_health_check(ost->ost_seq_service);
 398         mutex_unlock(&ost->ost_health_mutex);
 399
 400         return rc != 0 ? 1 : 0;
 401 }
 402
 403 /* use obd ops to offer management infrastructure */
 404 static struct obd_ops ost_obd_ops = {
 405         .o_owner        = THIS_MODULE,
 406         .o_setup        = ost_setup,
 407         .o_cleanup      = ost_cleanup,
 408         .o_health_check = ost_health_check,
 409 };
 410
 411
 412 static int __init ost_init(void)
 413 {
 414         int rc;
 415
 416         ENTRY;
 417
 418         rc = class_register_type(&ost_obd_ops, NULL, true, NULL,
 419                                  LUSTRE_OSS_NAME, NULL);
 420
 421         if (ost_num_threads != 0 && oss_num_threads == 0) {
 422                 LCONSOLE_INFO("ost_num_threads module parameter is deprecated, "
 423                               "use oss_num_threads instead or unset both for "
 424                               "dynamic thread startup\n");
 425                 oss_num_threads = ost_num_threads;
 426         }
 427
 428         RETURN(rc);
 429 }
 430
 431 static void /*__exit*/ ost_exit(void)
 432 {
 433         class_unregister_type(LUSTRE_OSS_NAME);
 434 }
 435
 436 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
 437 MODULE_DESCRIPTION("Lustre Object Storage Target (OST) v0.01");
 438 MODULE_LICENSE("GPL");
 439
 440 module_init(ost_init);
 441 module_exit(ost_exit);