4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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.
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.
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
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2013, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
31 * lustre/mdt/mdt_mds.c
33 * Lustre Metadata Service Layer
35 * Author: Di Wang <di.wang@whamcloud.com>
38 #define DEBUG_SUBSYSTEM S_MDS
40 #include <linux/module.h>
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 */
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 <uapi/linux/lustre/lustre_param.h>
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 struct ptlrpc_service *mds_io_service;
68 struct mutex mds_health_mutex;
72 * * Initialized in mds_mod_init().
74 static unsigned long mds_num_threads;
75 module_param(mds_num_threads, ulong, 0444);
76 MODULE_PARM_DESC(mds_num_threads, "number of MDS service threads to start");
78 int mds_max_io_threads = 512;
79 module_param(mds_max_io_threads, int, 0444);
80 MODULE_PARM_DESC(mds_max_io_threads, "maximum number of MDS IO service threads");
82 static char *mds_num_cpts;
83 module_param(mds_num_cpts, charp, 0444);
84 MODULE_PARM_DESC(mds_num_cpts, "CPU partitions MDS threads should run on");
86 static unsigned long mds_rdpg_num_threads;
87 module_param(mds_rdpg_num_threads, ulong, 0444);
88 MODULE_PARM_DESC(mds_rdpg_num_threads,
89 "number of MDS readpage service threads to start");
91 static char *mds_rdpg_num_cpts;
92 module_param(mds_rdpg_num_cpts, charp, 0444);
93 MODULE_PARM_DESC(mds_rdpg_num_cpts,
94 "CPU partitions MDS readpage threads should run on");
96 /* NB: these two should be removed along with setattr service in the future */
97 static unsigned long mds_attr_num_threads;
98 module_param(mds_attr_num_threads, ulong, 0444);
99 MODULE_PARM_DESC(mds_attr_num_threads,
100 "number of MDS setattr service threads to start");
102 static char *mds_attr_num_cpts;
103 module_param(mds_attr_num_cpts, charp, 0444);
104 MODULE_PARM_DESC(mds_attr_num_cpts,
105 "CPU partitions MDS setattr threads should run on");
107 /* device init/fini methods */
108 static void mds_stop_ptlrpc_service(struct mds_device *m)
112 mutex_lock(&m->mds_health_mutex);
113 if (m->mds_regular_service != NULL) {
114 ptlrpc_unregister_service(m->mds_regular_service);
115 m->mds_regular_service = NULL;
117 if (m->mds_readpage_service != NULL) {
118 ptlrpc_unregister_service(m->mds_readpage_service);
119 m->mds_readpage_service = NULL;
121 if (m->mds_out_service != NULL) {
122 ptlrpc_unregister_service(m->mds_out_service);
123 m->mds_out_service = NULL;
125 if (m->mds_setattr_service != NULL) {
126 ptlrpc_unregister_service(m->mds_setattr_service);
127 m->mds_setattr_service = NULL;
129 if (m->mds_mdsc_service != NULL) {
130 ptlrpc_unregister_service(m->mds_mdsc_service);
131 m->mds_mdsc_service = NULL;
133 if (m->mds_mdss_service != NULL) {
134 ptlrpc_unregister_service(m->mds_mdss_service);
135 m->mds_mdss_service = NULL;
137 if (m->mds_fld_service != NULL) {
138 ptlrpc_unregister_service(m->mds_fld_service);
139 m->mds_fld_service = NULL;
141 if (m->mds_io_service != NULL) {
142 ptlrpc_unregister_service(m->mds_io_service);
143 m->mds_io_service = NULL;
145 mutex_unlock(&m->mds_health_mutex);
150 static int mds_start_ptlrpc_service(struct mds_device *m)
152 static struct ptlrpc_service_conf conf;
153 struct obd_device *obd = m->mds_md_dev.md_lu_dev.ld_obd;
154 struct proc_dir_entry *procfs_entry;
158 procfs_entry = obd->obd_proc_entry;
159 LASSERT(procfs_entry != NULL);
161 conf = (typeof(conf)) {
162 .psc_name = LUSTRE_MDT_NAME,
163 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
165 .bc_nbufs = MDS_NBUFS,
166 .bc_buf_size = MDS_REG_BUFSIZE,
167 .bc_req_max_size = MDS_REG_MAXREQSIZE,
168 .bc_rep_max_size = MDS_REG_MAXREPSIZE,
169 .bc_req_portal = MDS_REQUEST_PORTAL,
170 .bc_rep_portal = MDC_REPLY_PORTAL,
173 * We'd like to have a mechanism to set this on a per-device
177 .tc_thr_name = LUSTRE_MDT_NAME,
178 .tc_thr_factor = MDS_THR_FACTOR,
179 .tc_nthrs_init = MDS_NTHRS_INIT,
180 .tc_nthrs_base = MDS_NTHRS_BASE,
181 .tc_nthrs_max = MDS_NTHRS_MAX,
182 .tc_nthrs_user = mds_num_threads,
183 .tc_cpu_affinity = 1,
184 .tc_ctx_tags = LCT_MD_THREAD,
187 .cc_pattern = mds_num_cpts,
190 .so_req_handler = tgt_request_handle,
191 .so_req_printer = target_print_req,
192 .so_hpreq_handler = ptlrpc_hpreq_handler,
195 m->mds_regular_service = ptlrpc_register_service(&conf, &obd->obd_kset,
197 if (IS_ERR(m->mds_regular_service)) {
198 rc = PTR_ERR(m->mds_regular_service);
199 CERROR("failed to start regular mdt service: %d\n", rc);
200 m->mds_regular_service = NULL;
206 * readpage service configuration. Parameters have to be adjusted,
209 memset(&conf, 0, sizeof(conf));
210 conf = (typeof(conf)) {
211 .psc_name = LUSTRE_MDT_NAME "_readpage",
212 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
214 .bc_nbufs = MDS_NBUFS,
215 .bc_buf_size = MDS_BUFSIZE,
216 .bc_req_max_size = MDS_MAXREQSIZE,
217 .bc_rep_max_size = MDS_MAXREPSIZE,
218 .bc_req_portal = MDS_READPAGE_PORTAL,
219 .bc_rep_portal = MDC_REPLY_PORTAL,
222 .tc_thr_name = LUSTRE_MDT_NAME "_rdpg",
223 .tc_thr_factor = MDS_RDPG_THR_FACTOR,
224 .tc_nthrs_init = MDS_RDPG_NTHRS_INIT,
225 .tc_nthrs_base = MDS_RDPG_NTHRS_BASE,
226 .tc_nthrs_max = MDS_RDPG_NTHRS_MAX,
227 .tc_nthrs_user = mds_rdpg_num_threads,
228 .tc_cpu_affinity = 1,
229 .tc_ctx_tags = LCT_MD_THREAD,
232 .cc_pattern = mds_rdpg_num_cpts,
235 .so_req_handler = tgt_request_handle,
236 .so_req_printer = target_print_req,
239 m->mds_readpage_service = ptlrpc_register_service(&conf, &obd->obd_kset,
241 if (IS_ERR(m->mds_readpage_service)) {
242 rc = PTR_ERR(m->mds_readpage_service);
243 CERROR("failed to start readpage service: %d\n", rc);
244 m->mds_readpage_service = NULL;
246 GOTO(err_mds_svc, rc);
250 * setattr service configuration.
252 * XXX To keep the compatibility with old client(< 2.2), we need to
253 * preserve this portal for a certain time, it should be removed
254 * eventually. LU-617.
256 memset(&conf, 0, sizeof(conf));
257 conf = (typeof(conf)) {
258 .psc_name = LUSTRE_MDT_NAME "_setattr",
259 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
261 .bc_nbufs = MDS_NBUFS,
262 .bc_buf_size = MDS_BUFSIZE,
263 .bc_req_max_size = MDS_MAXREQSIZE,
264 .bc_rep_max_size = MDS_LOV_MAXREPSIZE,
265 .bc_req_portal = MDS_SETATTR_PORTAL,
266 .bc_rep_portal = MDC_REPLY_PORTAL,
269 .tc_thr_name = LUSTRE_MDT_NAME "_attr",
270 .tc_thr_factor = MDS_SETA_THR_FACTOR,
271 .tc_nthrs_init = MDS_SETA_NTHRS_INIT,
272 .tc_nthrs_base = MDS_SETA_NTHRS_BASE,
273 .tc_nthrs_max = MDS_SETA_NTHRS_MAX,
274 .tc_nthrs_user = mds_attr_num_threads,
275 .tc_cpu_affinity = 1,
276 .tc_ctx_tags = LCT_MD_THREAD,
279 .cc_pattern = mds_attr_num_cpts,
282 .so_req_handler = tgt_request_handle,
283 .so_req_printer = target_print_req,
284 .so_hpreq_handler = NULL,
287 m->mds_setattr_service = ptlrpc_register_service(&conf, &obd->obd_kset,
289 if (IS_ERR(m->mds_setattr_service)) {
290 rc = PTR_ERR(m->mds_setattr_service);
291 CERROR("failed to start setattr service: %d\n", rc);
292 m->mds_setattr_service = NULL;
294 GOTO(err_mds_svc, rc);
297 /* Object update service */
298 conf = (typeof(conf)) {
299 .psc_name = LUSTRE_MDT_NAME "_out",
300 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
302 .bc_nbufs = MDS_NBUFS,
303 .bc_buf_size = OUT_BUFSIZE,
304 .bc_req_max_size = OUT_MAXREQSIZE,
305 .bc_rep_max_size = OUT_MAXREPSIZE,
306 .bc_req_portal = OUT_PORTAL,
307 .bc_rep_portal = OSC_REPLY_PORTAL,
310 * We'd like to have a mechanism to set this on a per-device
314 .tc_thr_name = LUSTRE_MDT_NAME "_out",
315 .tc_thr_factor = MDS_THR_FACTOR,
316 .tc_nthrs_init = MDS_NTHRS_INIT,
317 .tc_nthrs_base = MDS_NTHRS_BASE,
318 .tc_nthrs_max = MDS_NTHRS_MAX,
319 .tc_nthrs_user = mds_num_threads,
320 .tc_cpu_affinity = 1,
321 .tc_ctx_tags = LCT_MD_THREAD |
325 .cc_pattern = mds_num_cpts,
328 .so_req_handler = tgt_request_handle,
329 .so_req_printer = target_print_req,
330 .so_hpreq_handler = NULL,
333 m->mds_out_service = ptlrpc_register_service(&conf, &obd->obd_kset,
335 if (IS_ERR(m->mds_out_service)) {
336 rc = PTR_ERR(m->mds_out_service);
337 CERROR("failed to start out service: %d\n", rc);
338 m->mds_out_service = NULL;
339 GOTO(err_mds_svc, rc);
343 * sequence controller service configuration
345 memset(&conf, 0, sizeof(conf));
346 conf = (typeof(conf)) {
347 .psc_name = LUSTRE_MDT_NAME "_seqs",
348 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
350 .bc_nbufs = MDS_NBUFS,
351 .bc_buf_size = SEQ_BUFSIZE,
352 .bc_req_max_size = SEQ_MAXREQSIZE,
353 .bc_rep_max_size = SEQ_MAXREPSIZE,
354 .bc_req_portal = SEQ_CONTROLLER_PORTAL,
355 .bc_rep_portal = MDC_REPLY_PORTAL,
358 .tc_thr_name = LUSTRE_MDT_NAME "_seqs",
359 .tc_nthrs_init = MDS_OTHR_NTHRS_INIT,
360 .tc_nthrs_max = MDS_OTHR_NTHRS_MAX,
361 .tc_ctx_tags = LCT_MD_THREAD,
364 .so_req_handler = tgt_request_handle,
365 .so_req_printer = target_print_req,
366 .so_hpreq_handler = NULL,
369 m->mds_mdsc_service = ptlrpc_register_service(&conf, &obd->obd_kset,
371 if (IS_ERR(m->mds_mdsc_service)) {
372 rc = PTR_ERR(m->mds_mdsc_service);
373 CERROR("failed to start seq controller service: %d\n", rc);
374 m->mds_mdsc_service = NULL;
376 GOTO(err_mds_svc, rc);
380 * metadata sequence server service configuration
382 memset(&conf, 0, sizeof(conf));
383 conf = (typeof(conf)) {
384 .psc_name = LUSTRE_MDT_NAME "_seqm",
385 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
387 .bc_nbufs = MDS_NBUFS,
388 .bc_buf_size = SEQ_BUFSIZE,
389 .bc_req_max_size = SEQ_MAXREQSIZE,
390 .bc_rep_max_size = SEQ_MAXREPSIZE,
391 .bc_req_portal = SEQ_METADATA_PORTAL,
392 .bc_rep_portal = MDC_REPLY_PORTAL,
395 .tc_thr_name = LUSTRE_MDT_NAME "_seqm",
396 .tc_nthrs_init = MDS_OTHR_NTHRS_INIT,
397 .tc_nthrs_max = MDS_OTHR_NTHRS_MAX,
398 .tc_ctx_tags = LCT_MD_THREAD | LCT_DT_THREAD
401 .so_req_handler = tgt_request_handle,
402 .so_req_printer = target_print_req,
403 .so_hpreq_handler = NULL,
406 m->mds_mdss_service = ptlrpc_register_service(&conf, &obd->obd_kset,
408 if (IS_ERR(m->mds_mdss_service)) {
409 rc = PTR_ERR(m->mds_mdss_service);
410 CERROR("failed to start metadata seq server service: %d\n", rc);
411 m->mds_mdss_service = NULL;
413 GOTO(err_mds_svc, rc);
416 /* FLD service start */
417 memset(&conf, 0, sizeof(conf));
418 conf = (typeof(conf)) {
419 .psc_name = LUSTRE_MDT_NAME "_fld",
420 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
422 .bc_nbufs = MDS_NBUFS,
423 .bc_buf_size = FLD_BUFSIZE,
424 .bc_req_max_size = FLD_MAXREQSIZE,
425 .bc_rep_max_size = FLD_MAXREPSIZE,
426 .bc_req_portal = FLD_REQUEST_PORTAL,
427 .bc_rep_portal = MDC_REPLY_PORTAL,
430 .tc_thr_name = LUSTRE_MDT_NAME "_fld",
431 .tc_nthrs_init = MDS_OTHR_NTHRS_INIT,
432 .tc_nthrs_max = MDS_OTHR_NTHRS_MAX,
433 .tc_ctx_tags = LCT_DT_THREAD | LCT_MD_THREAD,
436 .so_req_handler = tgt_request_handle,
437 .so_req_printer = target_print_req,
438 .so_hpreq_handler = NULL,
441 m->mds_fld_service = ptlrpc_register_service(&conf, &obd->obd_kset,
443 if (IS_ERR(m->mds_fld_service)) {
444 rc = PTR_ERR(m->mds_fld_service);
445 CERROR("failed to start fld service: %d\n", rc);
446 m->mds_fld_service = NULL;
448 GOTO(err_mds_svc, rc);
451 memset(&conf, 0, sizeof(conf));
452 conf = (typeof(conf)) {
453 .psc_name = LUSTRE_MDT_NAME "_io",
454 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
456 .bc_nbufs = OST_NBUFS,
457 .bc_buf_size = OST_IO_BUFSIZE,
458 .bc_req_max_size = OST_IO_MAXREQSIZE,
459 .bc_rep_max_size = OST_IO_MAXREPSIZE,
460 .bc_req_portal = MDS_IO_PORTAL,
461 .bc_rep_portal = MDC_REPLY_PORTAL,
464 .tc_thr_name = "ll_mdt_io",
465 .tc_thr_factor = OSS_THR_FACTOR,
466 .tc_nthrs_init = OSS_NTHRS_INIT,
467 .tc_nthrs_base = OSS_NTHRS_BASE,
468 .tc_nthrs_max = mds_max_io_threads,
469 .tc_cpu_affinity = 1,
470 .tc_ctx_tags = LCT_DT_THREAD | LCT_MD_THREAD,
473 .so_thr_init = tgt_io_thread_init,
474 .so_thr_done = tgt_io_thread_done,
475 .so_req_handler = tgt_request_handle,
476 .so_req_printer = target_print_req,
477 .so_hpreq_handler = tgt_hpreq_handler,
480 m->mds_io_service = ptlrpc_register_service(&conf, &obd->obd_kset,
482 if (IS_ERR(m->mds_io_service)) {
483 rc = PTR_ERR(m->mds_io_service);
484 CERROR("failed to start MDT I/O service: %d\n", rc);
485 m->mds_io_service = NULL;
486 GOTO(err_mds_svc, rc);
492 mds_stop_ptlrpc_service(m);
497 static inline struct mds_device *mds_dev(struct lu_device *d)
499 return container_of0(d, struct mds_device, mds_md_dev.md_lu_dev);
502 static struct lu_device *mds_device_fini(const struct lu_env *env,
505 struct mds_device *m = mds_dev(d);
506 struct obd_device *obd = d->ld_obd;
509 mds_stop_ptlrpc_service(m);
510 lprocfs_obd_cleanup(obd);
514 static struct lu_device *mds_device_free(const struct lu_env *env,
517 struct mds_device *m = mds_dev(d);
520 md_device_fini(&m->mds_md_dev);
525 static struct lu_device *mds_device_alloc(const struct lu_env *env,
526 struct lu_device_type *t,
527 struct lustre_cfg *cfg)
529 struct mds_device *m;
530 struct obd_device *obd;
536 return ERR_PTR(-ENOMEM);
538 md_device_init(&m->mds_md_dev, t);
539 l = &m->mds_md_dev.md_lu_dev;
541 obd = class_name2obd(lustre_cfg_string(cfg, 0));
542 LASSERT(obd != NULL);
545 /* set this lu_device to obd, because error handling need it */
548 rc = lprocfs_obd_setup(obd, true);
550 mds_device_free(env, l);
555 mutex_init(&m->mds_health_mutex);
557 rc = mds_start_ptlrpc_service(m);
559 lprocfs_obd_cleanup(obd);
560 mds_device_free(env, l);
567 /* type constructor/destructor: mdt_type_init, mdt_type_fini */
568 LU_TYPE_INIT_FINI(mds, &mdt_thread_key);
570 static struct lu_device_type_operations mds_device_type_ops = {
571 .ldto_init = mds_type_init,
572 .ldto_fini = mds_type_fini,
574 .ldto_start = mds_type_start,
575 .ldto_stop = mds_type_stop,
577 .ldto_device_alloc = mds_device_alloc,
578 .ldto_device_free = mds_device_free,
579 .ldto_device_fini = mds_device_fini
582 static struct lu_device_type mds_device_type = {
583 .ldt_tags = LU_DEVICE_MD,
584 .ldt_name = LUSTRE_MDS_NAME,
585 .ldt_ops = &mds_device_type_ops,
586 .ldt_ctx_tags = LCT_MD_THREAD
589 static int mds_health_check(const struct lu_env *env, struct obd_device *obd)
591 struct mds_device *mds = mds_dev(obd->obd_lu_dev);
595 mutex_lock(&mds->mds_health_mutex);
596 rc |= ptlrpc_service_health_check(mds->mds_regular_service);
597 rc |= ptlrpc_service_health_check(mds->mds_readpage_service);
598 rc |= ptlrpc_service_health_check(mds->mds_out_service);
599 rc |= ptlrpc_service_health_check(mds->mds_setattr_service);
600 rc |= ptlrpc_service_health_check(mds->mds_mdsc_service);
601 rc |= ptlrpc_service_health_check(mds->mds_mdss_service);
602 rc |= ptlrpc_service_health_check(mds->mds_fld_service);
603 rc |= ptlrpc_service_health_check(mds->mds_io_service);
604 mutex_unlock(&mds->mds_health_mutex);
606 return rc != 0 ? 1 : 0;
609 static struct obd_ops mds_obd_device_ops = {
610 .o_owner = THIS_MODULE,
611 .o_health_check = mds_health_check,
614 int mds_mod_init(void)
616 return class_register_type(&mds_obd_device_ops, NULL, true, NULL,
617 LUSTRE_MDS_NAME, &mds_device_type);
620 void mds_mod_exit(void)
622 class_unregister_type(LUSTRE_MDS_NAME);