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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.
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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, 2015, 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_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 mutex mds_health_mutex;
68 struct kset *mds_kset;
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 static char *mds_num_cpts;
79 module_param(mds_num_cpts, charp, 0444);
80 MODULE_PARM_DESC(mds_num_cpts, "CPU partitions MDS threads should run on");
82 static unsigned long mds_rdpg_num_threads;
83 module_param(mds_rdpg_num_threads, ulong, 0444);
84 MODULE_PARM_DESC(mds_rdpg_num_threads,
85 "number of MDS readpage service threads to start");
87 static char *mds_rdpg_num_cpts;
88 module_param(mds_rdpg_num_cpts, charp, 0444);
89 MODULE_PARM_DESC(mds_rdpg_num_cpts,
90 "CPU partitions MDS readpage threads should run on");
92 /* NB: these two should be removed along with setattr service in the future */
93 static unsigned long mds_attr_num_threads;
94 module_param(mds_attr_num_threads, ulong, 0444);
95 MODULE_PARM_DESC(mds_attr_num_threads,
96 "number of MDS setattr service threads to start");
98 static char *mds_attr_num_cpts;
99 module_param(mds_attr_num_cpts, charp, 0444);
100 MODULE_PARM_DESC(mds_attr_num_cpts,
101 "CPU partitions MDS setattr threads should run on");
103 /* device init/fini methods */
104 static void mds_stop_ptlrpc_service(struct mds_device *m)
108 mutex_lock(&m->mds_health_mutex);
109 if (m->mds_regular_service != NULL) {
110 ptlrpc_unregister_service(m->mds_regular_service);
111 m->mds_regular_service = NULL;
113 if (m->mds_readpage_service != NULL) {
114 ptlrpc_unregister_service(m->mds_readpage_service);
115 m->mds_readpage_service = NULL;
117 if (m->mds_out_service != NULL) {
118 ptlrpc_unregister_service(m->mds_out_service);
119 m->mds_out_service = NULL;
121 if (m->mds_setattr_service != NULL) {
122 ptlrpc_unregister_service(m->mds_setattr_service);
123 m->mds_setattr_service = NULL;
125 if (m->mds_mdsc_service != NULL) {
126 ptlrpc_unregister_service(m->mds_mdsc_service);
127 m->mds_mdsc_service = NULL;
129 if (m->mds_mdss_service != NULL) {
130 ptlrpc_unregister_service(m->mds_mdss_service);
131 m->mds_mdss_service = NULL;
133 if (m->mds_fld_service != NULL) {
134 ptlrpc_unregister_service(m->mds_fld_service);
135 m->mds_fld_service = NULL;
137 mutex_unlock(&m->mds_health_mutex);
142 static int mds_start_ptlrpc_service(struct mds_device *m)
144 static struct ptlrpc_service_conf conf;
145 struct obd_device *obd = m->mds_md_dev.md_lu_dev.ld_obd;
146 struct proc_dir_entry *procfs_entry;
150 procfs_entry = obd->obd_proc_entry;
151 LASSERT(procfs_entry != NULL);
153 conf = (typeof(conf)) {
154 .psc_name = LUSTRE_MDT_NAME,
155 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
157 .bc_nbufs = MDS_NBUFS,
158 .bc_buf_size = MDS_REG_BUFSIZE,
159 .bc_req_max_size = MDS_REG_MAXREQSIZE,
160 .bc_rep_max_size = MDS_REG_MAXREPSIZE,
161 .bc_req_portal = MDS_REQUEST_PORTAL,
162 .bc_rep_portal = MDC_REPLY_PORTAL,
165 * We'd like to have a mechanism to set this on a per-device
169 .tc_thr_name = LUSTRE_MDT_NAME,
170 .tc_thr_factor = MDS_THR_FACTOR,
171 .tc_nthrs_init = MDS_NTHRS_INIT,
172 .tc_nthrs_base = MDS_NTHRS_BASE,
173 .tc_nthrs_max = MDS_NTHRS_MAX,
174 .tc_nthrs_user = mds_num_threads,
175 .tc_cpu_affinity = 1,
176 .tc_ctx_tags = LCT_MD_THREAD,
179 .cc_pattern = mds_num_cpts,
182 .so_req_handler = tgt_request_handle,
183 .so_req_printer = target_print_req,
184 .so_hpreq_handler = ptlrpc_hpreq_handler,
187 m->mds_regular_service = ptlrpc_register_service(&conf, m->mds_kset,
189 if (IS_ERR(m->mds_regular_service)) {
190 rc = PTR_ERR(m->mds_regular_service);
191 CERROR("failed to start regular mdt service: %d\n", rc);
192 m->mds_regular_service = NULL;
198 * readpage service configuration. Parameters have to be adjusted,
201 memset(&conf, 0, sizeof(conf));
202 conf = (typeof(conf)) {
203 .psc_name = LUSTRE_MDT_NAME "_readpage",
204 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
206 .bc_nbufs = MDS_NBUFS,
207 .bc_buf_size = MDS_BUFSIZE,
208 .bc_req_max_size = MDS_MAXREQSIZE,
209 .bc_rep_max_size = MDS_MAXREPSIZE,
210 .bc_req_portal = MDS_READPAGE_PORTAL,
211 .bc_rep_portal = MDC_REPLY_PORTAL,
214 .tc_thr_name = LUSTRE_MDT_NAME "_rdpg",
215 .tc_thr_factor = MDS_RDPG_THR_FACTOR,
216 .tc_nthrs_init = MDS_RDPG_NTHRS_INIT,
217 .tc_nthrs_base = MDS_RDPG_NTHRS_BASE,
218 .tc_nthrs_max = MDS_RDPG_NTHRS_MAX,
219 .tc_nthrs_user = mds_rdpg_num_threads,
220 .tc_cpu_affinity = 1,
221 .tc_ctx_tags = LCT_MD_THREAD,
224 .cc_pattern = mds_rdpg_num_cpts,
227 .so_req_handler = tgt_request_handle,
228 .so_req_printer = target_print_req,
231 m->mds_readpage_service = ptlrpc_register_service(&conf, m->mds_kset,
233 if (IS_ERR(m->mds_readpage_service)) {
234 rc = PTR_ERR(m->mds_readpage_service);
235 CERROR("failed to start readpage service: %d\n", rc);
236 m->mds_readpage_service = NULL;
238 GOTO(err_mds_svc, rc);
242 * setattr service configuration.
244 * XXX To keep the compatibility with old client(< 2.2), we need to
245 * preserve this portal for a certain time, it should be removed
246 * eventually. LU-617.
248 memset(&conf, 0, sizeof(conf));
249 conf = (typeof(conf)) {
250 .psc_name = LUSTRE_MDT_NAME "_setattr",
251 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
253 .bc_nbufs = MDS_NBUFS,
254 .bc_buf_size = MDS_BUFSIZE,
255 .bc_req_max_size = MDS_MAXREQSIZE,
256 .bc_rep_max_size = MDS_LOV_MAXREPSIZE,
257 .bc_req_portal = MDS_SETATTR_PORTAL,
258 .bc_rep_portal = MDC_REPLY_PORTAL,
261 .tc_thr_name = LUSTRE_MDT_NAME "_attr",
262 .tc_thr_factor = MDS_SETA_THR_FACTOR,
263 .tc_nthrs_init = MDS_SETA_NTHRS_INIT,
264 .tc_nthrs_base = MDS_SETA_NTHRS_BASE,
265 .tc_nthrs_max = MDS_SETA_NTHRS_MAX,
266 .tc_nthrs_user = mds_attr_num_threads,
267 .tc_cpu_affinity = 1,
268 .tc_ctx_tags = LCT_MD_THREAD,
271 .cc_pattern = mds_attr_num_cpts,
274 .so_req_handler = tgt_request_handle,
275 .so_req_printer = target_print_req,
276 .so_hpreq_handler = NULL,
279 m->mds_setattr_service = ptlrpc_register_service(&conf, m->mds_kset,
281 if (IS_ERR(m->mds_setattr_service)) {
282 rc = PTR_ERR(m->mds_setattr_service);
283 CERROR("failed to start setattr service: %d\n", rc);
284 m->mds_setattr_service = NULL;
286 GOTO(err_mds_svc, rc);
289 /* Object update service */
290 conf = (typeof(conf)) {
291 .psc_name = LUSTRE_MDT_NAME "_out",
292 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
294 .bc_nbufs = MDS_NBUFS,
295 .bc_buf_size = OUT_BUFSIZE,
296 .bc_req_max_size = OUT_MAXREQSIZE,
297 .bc_rep_max_size = OUT_MAXREPSIZE,
298 .bc_req_portal = OUT_PORTAL,
299 .bc_rep_portal = OSC_REPLY_PORTAL,
302 * We'd like to have a mechanism to set this on a per-device
306 .tc_thr_name = LUSTRE_MDT_NAME "_out",
307 .tc_thr_factor = MDS_THR_FACTOR,
308 .tc_nthrs_init = MDS_NTHRS_INIT,
309 .tc_nthrs_base = MDS_NTHRS_BASE,
310 .tc_nthrs_max = MDS_NTHRS_MAX,
311 .tc_nthrs_user = mds_num_threads,
312 .tc_cpu_affinity = 1,
313 .tc_ctx_tags = LCT_MD_THREAD |
317 .cc_pattern = mds_num_cpts,
320 .so_req_handler = tgt_request_handle,
321 .so_req_printer = target_print_req,
322 .so_hpreq_handler = NULL,
325 m->mds_out_service = ptlrpc_register_service(&conf, m->mds_kset,
327 if (IS_ERR(m->mds_out_service)) {
328 rc = PTR_ERR(m->mds_out_service);
329 CERROR("failed to start out service: %d\n", rc);
330 m->mds_out_service = NULL;
331 GOTO(err_mds_svc, rc);
335 * sequence controller service configuration
337 memset(&conf, 0, sizeof(conf));
338 conf = (typeof(conf)) {
339 .psc_name = LUSTRE_MDT_NAME "_seqs",
340 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
342 .bc_nbufs = MDS_NBUFS,
343 .bc_buf_size = SEQ_BUFSIZE,
344 .bc_req_max_size = SEQ_MAXREQSIZE,
345 .bc_rep_max_size = SEQ_MAXREPSIZE,
346 .bc_req_portal = SEQ_CONTROLLER_PORTAL,
347 .bc_rep_portal = MDC_REPLY_PORTAL,
350 .tc_thr_name = LUSTRE_MDT_NAME "_seqs",
351 .tc_nthrs_init = MDS_OTHR_NTHRS_INIT,
352 .tc_nthrs_max = MDS_OTHR_NTHRS_MAX,
353 .tc_ctx_tags = LCT_MD_THREAD,
356 .so_req_handler = tgt_request_handle,
357 .so_req_printer = target_print_req,
358 .so_hpreq_handler = NULL,
361 m->mds_mdsc_service = ptlrpc_register_service(&conf, m->mds_kset,
363 if (IS_ERR(m->mds_mdsc_service)) {
364 rc = PTR_ERR(m->mds_mdsc_service);
365 CERROR("failed to start seq controller service: %d\n", rc);
366 m->mds_mdsc_service = NULL;
368 GOTO(err_mds_svc, rc);
372 * metadata sequence server service configuration
374 memset(&conf, 0, sizeof(conf));
375 conf = (typeof(conf)) {
376 .psc_name = LUSTRE_MDT_NAME "_seqm",
377 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
379 .bc_nbufs = MDS_NBUFS,
380 .bc_buf_size = SEQ_BUFSIZE,
381 .bc_req_max_size = SEQ_MAXREQSIZE,
382 .bc_rep_max_size = SEQ_MAXREPSIZE,
383 .bc_req_portal = SEQ_METADATA_PORTAL,
384 .bc_rep_portal = MDC_REPLY_PORTAL,
387 .tc_thr_name = LUSTRE_MDT_NAME "_seqm",
388 .tc_nthrs_init = MDS_OTHR_NTHRS_INIT,
389 .tc_nthrs_max = MDS_OTHR_NTHRS_MAX,
390 .tc_ctx_tags = LCT_MD_THREAD | LCT_DT_THREAD
393 .so_req_handler = tgt_request_handle,
394 .so_req_printer = target_print_req,
395 .so_hpreq_handler = NULL,
398 m->mds_mdss_service = ptlrpc_register_service(&conf, m->mds_kset,
400 if (IS_ERR(m->mds_mdss_service)) {
401 rc = PTR_ERR(m->mds_mdss_service);
402 CERROR("failed to start metadata seq server service: %d\n", rc);
403 m->mds_mdss_service = NULL;
405 GOTO(err_mds_svc, rc);
408 /* FLD service start */
409 memset(&conf, 0, sizeof(conf));
410 conf = (typeof(conf)) {
411 .psc_name = LUSTRE_MDT_NAME "_fld",
412 .psc_watchdog_factor = MDT_SERVICE_WATCHDOG_FACTOR,
414 .bc_nbufs = MDS_NBUFS,
415 .bc_buf_size = FLD_BUFSIZE,
416 .bc_req_max_size = FLD_MAXREQSIZE,
417 .bc_rep_max_size = FLD_MAXREPSIZE,
418 .bc_req_portal = FLD_REQUEST_PORTAL,
419 .bc_rep_portal = MDC_REPLY_PORTAL,
422 .tc_thr_name = LUSTRE_MDT_NAME "_fld",
423 .tc_nthrs_init = MDS_OTHR_NTHRS_INIT,
424 .tc_nthrs_max = MDS_OTHR_NTHRS_MAX,
425 .tc_ctx_tags = LCT_DT_THREAD | LCT_MD_THREAD,
428 .so_req_handler = tgt_request_handle,
429 .so_req_printer = target_print_req,
430 .so_hpreq_handler = NULL,
433 m->mds_fld_service = ptlrpc_register_service(&conf, m->mds_kset,
435 if (IS_ERR(m->mds_fld_service)) {
436 rc = PTR_ERR(m->mds_fld_service);
437 CERROR("failed to start fld service: %d\n", rc);
438 m->mds_fld_service = NULL;
440 GOTO(err_mds_svc, rc);
446 mds_stop_ptlrpc_service(m);
451 static inline struct mds_device *mds_dev(struct lu_device *d)
453 return container_of0(d, struct mds_device, mds_md_dev.md_lu_dev);
456 static struct lu_device *mds_device_fini(const struct lu_env *env,
459 struct mds_device *m = mds_dev(d);
460 struct obd_device *obd = d->ld_obd;
463 mds_stop_ptlrpc_service(m);
464 lprocfs_kset_unregister(obd, m->mds_kset);
468 static struct lu_device *mds_device_free(const struct lu_env *env,
471 struct mds_device *m = mds_dev(d);
474 md_device_fini(&m->mds_md_dev);
479 static struct lu_device *mds_device_alloc(const struct lu_env *env,
480 struct lu_device_type *t,
481 struct lustre_cfg *cfg)
483 struct mds_device *m;
484 struct obd_device *obd;
490 return ERR_PTR(-ENOMEM);
492 md_device_init(&m->mds_md_dev, t);
493 l = &m->mds_md_dev.md_lu_dev;
495 obd = class_name2obd(lustre_cfg_string(cfg, 0));
496 LASSERT(obd != NULL);
499 /* set this lu_device to obd, because error handling need it */
502 rc = lprocfs_kset_register(obd, &m->mds_kset);
504 mds_device_free(env, l);
509 mutex_init(&m->mds_health_mutex);
511 rc = mds_start_ptlrpc_service(m);
513 lprocfs_kset_unregister(obd, m->mds_kset);
514 mds_device_free(env, l);
521 /* type constructor/destructor: mdt_type_init, mdt_type_fini */
522 LU_TYPE_INIT_FINI(mds, &mdt_thread_key);
524 static struct lu_device_type_operations mds_device_type_ops = {
525 .ldto_init = mds_type_init,
526 .ldto_fini = mds_type_fini,
528 .ldto_start = mds_type_start,
529 .ldto_stop = mds_type_stop,
531 .ldto_device_alloc = mds_device_alloc,
532 .ldto_device_free = mds_device_free,
533 .ldto_device_fini = mds_device_fini
536 static struct lu_device_type mds_device_type = {
537 .ldt_tags = LU_DEVICE_MD,
538 .ldt_name = LUSTRE_MDS_NAME,
539 .ldt_ops = &mds_device_type_ops,
540 .ldt_ctx_tags = LCT_MD_THREAD
543 static int mds_health_check(const struct lu_env *env, struct obd_device *obd)
545 struct mds_device *mds = mds_dev(obd->obd_lu_dev);
549 mutex_lock(&mds->mds_health_mutex);
550 rc |= ptlrpc_service_health_check(mds->mds_regular_service);
551 rc |= ptlrpc_service_health_check(mds->mds_readpage_service);
552 rc |= ptlrpc_service_health_check(mds->mds_out_service);
553 rc |= ptlrpc_service_health_check(mds->mds_setattr_service);
554 rc |= ptlrpc_service_health_check(mds->mds_mdsc_service);
555 rc |= ptlrpc_service_health_check(mds->mds_mdss_service);
556 rc |= ptlrpc_service_health_check(mds->mds_fld_service);
557 mutex_unlock(&mds->mds_health_mutex);
559 return rc != 0 ? 1 : 0;
562 static struct obd_ops mds_obd_device_ops = {
563 .o_owner = THIS_MODULE,
564 .o_health_check = mds_health_check,
567 int mds_mod_init(void)
569 return class_register_type(&mds_obd_device_ops, NULL, true, NULL,
570 LUSTRE_MDS_NAME, &mds_device_type);
573 void mds_mod_exit(void)
575 class_unregister_type(LUSTRE_MDS_NAME);