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, 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).
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
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
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/osp/osp_dev.c
38 * Lustre OST Proxy Device
40 * Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
41 * Author: Mikhail Pershin <mike.pershin@intel.com>
42 * Author: Di Wang <di.wang@intel.com>
46 # define EXPORT_SYMTAB
48 #define DEBUG_SUBSYSTEM S_MDS
50 #include <obd_class.h>
51 #include <lustre_param.h>
52 #include <lustre_log.h>
53 #include <lustre_mdc.h>
55 #include "osp_internal.h"
57 /* Slab for OSP object allocation */
58 cfs_mem_cache_t *osp_object_kmem;
60 static struct lu_kmem_descr osp_caches[] = {
62 .ckd_cache = &osp_object_kmem,
63 .ckd_name = "osp_obj",
64 .ckd_size = sizeof(struct osp_object)
71 struct lu_object *osp_object_alloc(const struct lu_env *env,
72 const struct lu_object_header *hdr,
75 struct lu_object_header *h;
81 OBD_SLAB_ALLOC_PTR_GFP(o, osp_object_kmem, CFS_ALLOC_IO);
83 l = &o->opo_obj.do_lu;
86 lu_object_header_init(h);
87 dt_object_init(&o->opo_obj, h, d);
88 lu_object_add_top(h, l);
90 l->lo_ops = &osp_lu_obj_ops;
98 static struct dt_object
99 *osp_find_or_create(const struct lu_env *env, struct osp_device *osp,
100 struct lu_attr *attr, __u32 reg_id)
102 struct osp_thread_info *osi = osp_env_info(env);
103 struct dt_object_format dof = { 0 };
104 struct dt_object *dto;
108 lu_local_obj_fid(&osi->osi_fid, reg_id);
109 attr->la_valid = LA_MODE;
110 attr->la_mode = S_IFREG | 0644;
111 dof.dof_type = DFT_REGULAR;
112 dto = dt_find_or_create(env, osp->opd_storage, &osi->osi_fid,
117 rc = dt_attr_get(env, dto, attr, NULL);
119 CERROR("%s: can't be initialized: rc = %d\n",
120 osp->opd_obd->obd_name, rc);
121 lu_object_put(env, &dto->do_lu);
127 static int osp_write_local_file(const struct lu_env *env,
128 struct osp_device *osp,
129 struct dt_object *dt_obj,
136 th = dt_trans_create(env, osp->opd_storage);
140 rc = dt_declare_record_write(env, dt_obj, buf->lb_len, offset, th);
143 rc = dt_trans_start_local(env, osp->opd_storage, th);
147 rc = dt_record_write(env, dt_obj, buf, &offset, th);
149 dt_trans_stop(env, osp->opd_storage, th);
153 static int osp_init_last_objid(const struct lu_env *env, struct osp_device *osp)
155 struct osp_thread_info *osi = osp_env_info(env);
156 struct lu_fid *fid = &osp->opd_last_used_fid;
157 struct dt_object *dto;
161 dto = osp_find_or_create(env, osp, &osi->osi_attr, MDD_LOV_OBJ_OID);
163 RETURN(PTR_ERR(dto));
164 /* object will be released in device cleanup path */
165 if (osi->osi_attr.la_size >=
166 sizeof(osi->osi_id) * (osp->opd_index + 1)) {
167 osp_objid_buf_prep(&osi->osi_lb, &osi->osi_off, &fid->f_oid,
169 rc = dt_record_read(env, dto, &osi->osi_lb, &osi->osi_off);
174 osp_objid_buf_prep(&osi->osi_lb, &osi->osi_off, &fid->f_oid,
176 rc = osp_write_local_file(env, osp, dto, &osi->osi_lb,
179 osp->opd_last_used_oid_file = dto;
182 /* object will be released in device cleanup path */
183 CERROR("%s: can't initialize lov_objid: rc = %d\n",
184 osp->opd_obd->obd_name, rc);
185 lu_object_put(env, &dto->do_lu);
186 osp->opd_last_used_oid_file = NULL;
190 static int osp_init_last_seq(const struct lu_env *env, struct osp_device *osp)
192 struct osp_thread_info *osi = osp_env_info(env);
193 struct lu_fid *fid = &osp->opd_last_used_fid;
194 struct dt_object *dto;
198 dto = osp_find_or_create(env, osp, &osi->osi_attr, MDD_LOV_OBJ_OSEQ);
200 RETURN(PTR_ERR(dto));
202 /* object will be released in device cleanup path */
203 if (osi->osi_attr.la_size >=
204 sizeof(osi->osi_id) * (osp->opd_index + 1)) {
205 osp_objseq_buf_prep(&osi->osi_lb, &osi->osi_off, &fid->f_seq,
207 rc = dt_record_read(env, dto, &osi->osi_lb, &osi->osi_off);
212 osp_objseq_buf_prep(&osi->osi_lb, &osi->osi_off, &fid->f_seq,
214 rc = osp_write_local_file(env, osp, dto, &osi->osi_lb,
217 osp->opd_last_used_seq_file = dto;
220 /* object will be released in device cleanup path */
221 CERROR("%s: can't initialize lov_seq: rc = %d\n",
222 osp->opd_obd->obd_name, rc);
223 lu_object_put(env, &dto->do_lu);
224 osp->opd_last_used_seq_file = NULL;
228 static int osp_last_used_init(const struct lu_env *env, struct osp_device *osp)
230 struct osp_thread_info *osi = osp_env_info(env);
234 fid_zero(&osp->opd_last_used_fid);
235 rc = osp_init_last_objid(env, osp);
237 CERROR("%s: Can not get ids %d from old objid!\n",
238 osp->opd_obd->obd_name, rc);
242 rc = osp_init_last_seq(env, osp);
244 CERROR("%s: Can not get ids %d from old objid!\n",
245 osp->opd_obd->obd_name, rc);
249 if (fid_oid(&osp->opd_last_used_fid) != 0 &&
250 fid_seq(&osp->opd_last_used_fid) == 0) {
251 /* Just upgrade from the old version,
252 * set the seq to be IDIF */
253 osp->opd_last_used_fid.f_seq =
254 fid_idif_seq(fid_oid(&osp->opd_last_used_fid),
256 osp_objseq_buf_prep(&osi->osi_lb, &osi->osi_off,
257 &osp->opd_last_used_fid.f_seq,
259 rc = osp_write_local_file(env, osp, osp->opd_last_used_seq_file,
260 &osi->osi_lb, osi->osi_off);
262 CERROR("%s : Can not write seq file: rc = %d\n",
263 osp->opd_obd->obd_name, rc);
268 if (!fid_is_zero(&osp->opd_last_used_fid) &&
269 !fid_is_sane(&osp->opd_last_used_fid)) {
270 CERROR("%s: Got invalid FID "DFID"\n", osp->opd_obd->obd_name,
271 PFID(&osp->opd_last_used_fid));
272 GOTO(out, rc = -EINVAL);
275 CDEBUG(D_INFO, "%s: Init last used fid "DFID"\n",
276 osp->opd_obd->obd_name, PFID(&osp->opd_last_used_fid));
279 if (osp->opd_last_used_oid_file != NULL) {
280 lu_object_put(env, &osp->opd_last_used_oid_file->do_lu);
281 osp->opd_last_used_oid_file = NULL;
283 if (osp->opd_last_used_seq_file != NULL) {
284 lu_object_put(env, &osp->opd_last_used_seq_file->do_lu);
285 osp->opd_last_used_seq_file = NULL;
292 static void osp_last_used_fini(const struct lu_env *env, struct osp_device *d)
294 /* release last_used file */
295 if (d->opd_last_used_oid_file != NULL) {
296 lu_object_put(env, &d->opd_last_used_oid_file->do_lu);
297 d->opd_last_used_oid_file = NULL;
300 if (d->opd_last_used_seq_file != NULL) {
301 lu_object_put(env, &d->opd_last_used_seq_file->do_lu);
302 d->opd_last_used_seq_file = NULL;
306 static int osp_disconnect(struct osp_device *d)
308 struct obd_import *imp;
311 imp = d->opd_obd->u.cli.cl_import;
313 /* Mark import deactivated now, so we don't try to reconnect if any
314 * of the cleanup RPCs fails (e.g. ldlm cancel, etc). We don't
315 * fully deactivate the import, or that would drop all requests. */
316 LASSERT(imp != NULL);
317 spin_lock(&imp->imp_lock);
318 imp->imp_deactive = 1;
319 spin_unlock(&imp->imp_lock);
321 ptlrpc_deactivate_import(imp);
323 /* Some non-replayable imports (MDS's OSCs) are pinged, so just
324 * delete it regardless. (It's safe to delete an import that was
326 (void)ptlrpc_pinger_del_import(imp);
328 rc = ptlrpc_disconnect_import(imp, 0);
329 if (rc == -ETIMEDOUT || rc == -ENOTCONN || rc == -ESHUTDOWN)
332 CERROR("%s: can't disconnect: rc = %d\n",
333 d->opd_obd->obd_name, rc);
335 ptlrpc_invalidate_import(imp);
340 static int osp_shutdown(const struct lu_env *env, struct osp_device *d)
346 /* release last_used file */
347 if (!d->opd_connect_mdt)
348 osp_last_used_fini(env, d);
350 rc = osp_disconnect(d);
352 if (!d->opd_connect_mdt) {
353 /* stop precreate thread */
354 osp_precreate_fini(d);
356 /* stop sync thread */
360 obd_fid_fini(d->opd_obd);
365 static int osp_process_config(const struct lu_env *env,
366 struct lu_device *dev, struct lustre_cfg *lcfg)
368 struct osp_device *d = lu2osp_dev(dev);
369 struct lprocfs_static_vars lvars = { 0 };
374 switch (lcfg->lcfg_command) {
376 lu_dev_del_linkage(dev->ld_site, dev);
377 rc = osp_shutdown(env, d);
380 lprocfs_osp_init_vars(&lvars);
383 rc = class_process_proc_param(PARAM_OSC, lvars.obd_vars,
388 /* class_process_proc_param() haven't found matching
389 * parameter and returned ENOSYS so that layer(s)
390 * below could use that. But OSP is the bottom, so
392 CERROR("%s: unknown param %s\n",
393 (char *)lustre_cfg_string(lcfg, 0),
394 (char *)lustre_cfg_string(lcfg, 1));
399 CERROR("%s: unknown command %u\n",
400 (char *)lustre_cfg_string(lcfg, 0), lcfg->lcfg_command);
408 static int osp_recovery_complete(const struct lu_env *env,
409 struct lu_device *dev)
411 struct osp_device *osp = lu2osp_dev(dev);
415 osp->opd_recovery_completed = 1;
416 if (!osp->opd_connect_mdt)
417 cfs_waitq_signal(&osp->opd_pre_waitq);
421 const struct lu_device_operations osp_lu_ops = {
422 .ldo_object_alloc = osp_object_alloc,
423 .ldo_process_config = osp_process_config,
424 .ldo_recovery_complete = osp_recovery_complete,
428 * provides with statfs from corresponded OST
431 static int osp_statfs(const struct lu_env *env, struct dt_device *dev,
432 struct obd_statfs *sfs)
434 struct osp_device *d = dt2osp_dev(dev);
438 if (unlikely(d->opd_imp_active == 0))
441 /* return recently updated data */
442 *sfs = d->opd_statfs;
445 * layer above osp (usually lod) can use ffree to estimate
446 * how many objects are available for immediate creation
449 spin_lock(&d->opd_pre_lock);
450 LASSERTF(fid_seq(&d->opd_pre_last_created_fid) ==
451 fid_seq(&d->opd_pre_used_fid),
452 "last_created "DFID", next_fid "DFID"\n",
453 PFID(&d->opd_pre_last_created_fid),
454 PFID(&d->opd_pre_used_fid));
455 sfs->os_fprecreated = fid_oid(&d->opd_pre_last_created_fid) -
456 fid_oid(&d->opd_pre_used_fid);
457 sfs->os_fprecreated -= d->opd_pre_reserved;
458 spin_unlock(&d->opd_pre_lock);
460 LASSERT(sfs->os_fprecreated <= OST_MAX_PRECREATE * 2);
462 CDEBUG(D_OTHER, "%s: "LPU64" blocks, "LPU64" free, "LPU64" avail, "
463 LPU64" files, "LPU64" free files\n", d->opd_obd->obd_name,
464 sfs->os_blocks, sfs->os_bfree, sfs->os_bavail,
465 sfs->os_files, sfs->os_ffree);
469 static int osp_sync(const struct lu_env *env, struct dt_device *dev)
474 * XXX: wake up sync thread, command it to start flushing asap?
480 const struct dt_device_operations osp_dt_ops = {
481 .dt_statfs = osp_statfs,
485 static int osp_connect_to_osd(const struct lu_env *env, struct osp_device *m,
488 struct obd_connect_data *data = NULL;
489 struct obd_device *obd;
494 LASSERT(m->opd_storage_exp == NULL);
500 obd = class_name2obd(nextdev);
502 CERROR("%s: can't locate next device: %s\n",
503 m->opd_obd->obd_name, nextdev);
504 GOTO(out, rc = -ENOTCONN);
507 rc = obd_connect(env, &m->opd_storage_exp, obd, &obd->obd_uuid, data,
510 CERROR("%s: cannot connect to next dev %s: rc = %d\n",
511 m->opd_obd->obd_name, nextdev, rc);
515 m->opd_dt_dev.dd_lu_dev.ld_site =
516 m->opd_storage_exp->exp_obd->obd_lu_dev->ld_site;
517 LASSERT(m->opd_dt_dev.dd_lu_dev.ld_site);
518 m->opd_storage = lu2dt_dev(m->opd_storage_exp->exp_obd->obd_lu_dev);
525 static int osp_init0(const struct lu_env *env, struct osp_device *m,
526 struct lu_device_type *ldt, struct lustre_cfg *cfg)
528 struct obd_device *obd;
529 struct obd_import *imp;
531 char *src, *tgt, *mdt, *osdname = NULL;
536 obd = class_name2obd(lustre_cfg_string(cfg, 0));
538 CERROR("Cannot find obd with name %s\n",
539 lustre_cfg_string(cfg, 0));
544 /* There is no record in the MDT configuration for the local disk
545 * device, so we have to extract this from elsewhere in the profile.
546 * The only information we get at setup is from the OSC records:
547 * setup 0:{fsname}-OSTxxxx-osc[-MDTxxxx] 1:lustre-OST0000_UUID 2:NID
548 * Note that 1.8 generated configs are missing the -MDTxxxx part.
549 * We need to reconstruct the name of the underlying OSD from this:
550 * {fsname}-{svname}-osd, for example "lustre-MDT0000-osd". We
551 * also need to determine the OST index from this - will be used
552 * to calculate the offset in shared lov_objids file later */
554 src = lustre_cfg_string(cfg, 0);
558 tgt = strrchr(src, '-');
560 CERROR("%s: invalid target name %s\n",
561 m->opd_obd->obd_name, lustre_cfg_string(cfg, 0));
565 if (strncmp(tgt, "-osc", 4) == 0) {
566 /* Old OSC name fsname-OSTXXXX-osc */
567 for (tgt--; tgt > src && *tgt != '-'; tgt--)
570 CERROR("%s: invalid target name %s\n",
571 m->opd_obd->obd_name, lustre_cfg_string(cfg, 0));
575 if (strncmp(tgt, "-OST", 4) != 0) {
576 CERROR("%s: invalid target name %s\n",
577 m->opd_obd->obd_name, lustre_cfg_string(cfg, 0));
581 idx = simple_strtol(tgt + 4, &mdt, 16);
582 if (mdt[0] != '-' || idx > INT_MAX || idx < 0) {
583 CERROR("%s: invalid OST index in '%s'\n",
584 m->opd_obd->obd_name, src);
590 /* New OSC name fsname-OSTXXXX-osc-MDTXXXX */
591 if (strncmp(tgt, "-MDT", 4) != 0 &&
592 strncmp(tgt, "-OST", 4) != 0) {
593 CERROR("%s: invalid target name %s\n",
594 m->opd_obd->obd_name, lustre_cfg_string(cfg, 0));
598 if (tgt - src <= 12) {
599 CERROR("%s: invalid target name %s\n",
600 m->opd_obd->obd_name, lustre_cfg_string(cfg, 0));
604 if (strncmp(tgt - 12, "-MDT", 4) == 0)
605 m->opd_connect_mdt = 1;
607 idx = simple_strtol(tgt - 8, &mdt, 16);
608 if (mdt[0] != '-' || idx > INT_MAX || idx < 0) {
609 CERROR("%s: invalid OST index in '%s'\n",
610 m->opd_obd->obd_name, src);
615 idx = tgt - src - 12;
617 /* check the fsname length, and after this everything else will fit */
618 if (idx > MTI_NAME_MAXLEN) {
619 CERROR("%s: fsname too long in '%s'\n",
620 m->opd_obd->obd_name, src);
624 OBD_ALLOC(osdname, MAX_OBD_NAME);
628 memcpy(osdname, src, idx); /* copy just the fsname part */
631 mdt = strstr(mdt, "-MDT");
632 if (mdt == NULL) /* 1.8 configs don't have "-MDT0000" at the end */
633 strcat(osdname, "-MDT0000");
635 strcat(osdname, mdt);
636 strcat(osdname, "-osd");
637 CDEBUG(D_HA, "%s: connect to %s (%s)\n", obd->obd_name, osdname, src);
639 if (m->opd_connect_mdt) {
640 struct client_obd *cli = &m->opd_obd->u.cli;
642 OBD_ALLOC(cli->cl_rpc_lock, sizeof(*cli->cl_rpc_lock));
643 if (!cli->cl_rpc_lock)
645 osp_init_rpc_lock(cli->cl_rpc_lock);
648 m->opd_dt_dev.dd_lu_dev.ld_ops = &osp_lu_ops;
649 m->opd_dt_dev.dd_ops = &osp_dt_ops;
650 obd->obd_lu_dev = &m->opd_dt_dev.dd_lu_dev;
652 rc = osp_connect_to_osd(env, m, osdname);
656 rc = ptlrpcd_addref();
658 GOTO(out_disconnect, rc);
660 rc = client_obd_setup(obd, cfg);
662 CERROR("%s: can't setup obd: %d\n", m->opd_obd->obd_name, rc);
668 if (!m->opd_connect_mdt) {
669 /* Initialize last id from the storage - will be
670 * used in orphan cleanup. */
671 rc = osp_last_used_init(env, m);
674 /* Initialize precreation thread, it handles new
675 * connections as well. */
676 rc = osp_init_precreate(m);
678 GOTO(out_last_used, rc);
680 * Initialize synhronization mechanism taking
681 * care of propogating changes to OST in near
682 * transactional manner.
684 rc = osp_sync_init(env, m);
686 GOTO(out_precreat, rc);
688 rc = obd_fid_init(m->opd_obd, NULL, LUSTRE_SEQ_DATA);
690 CERROR("%s: fid init error: rc = %d\n",
691 m->opd_obd->obd_name, rc);
696 * Initiate connect to OST
698 ll_generate_random_uuid(uuid);
699 class_uuid_unparse(uuid, &m->opd_cluuid);
701 imp = obd->u.cli.cl_import;
703 rc = ptlrpc_init_import(imp);
707 OBD_FREE(osdname, MAX_OBD_NAME);
711 if (!m->opd_connect_mdt)
712 /* stop sync thread */
715 /* stop precreate thread */
716 if (!m->opd_connect_mdt)
717 osp_precreate_fini(m);
719 osp_last_used_fini(env, m);
721 ptlrpc_lprocfs_unregister_obd(obd);
722 lprocfs_obd_cleanup(obd);
723 class_destroy_import(obd->u.cli.cl_import);
724 client_obd_cleanup(obd);
728 if (m->opd_connect_mdt) {
729 struct client_obd *cli = &m->opd_obd->u.cli;
730 if (cli->cl_rpc_lock != NULL) {
731 OBD_FREE_PTR(cli->cl_rpc_lock);
732 cli->cl_rpc_lock = NULL;
735 obd_disconnect(m->opd_storage_exp);
738 OBD_FREE(osdname, MAX_OBD_NAME);
742 static struct lu_device *osp_device_free(const struct lu_env *env,
743 struct lu_device *lu)
745 struct osp_device *m = lu2osp_dev(lu);
749 if (cfs_atomic_read(&lu->ld_ref) && lu->ld_site) {
750 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
751 lu_site_print(env, lu->ld_site, &msgdata, lu_cdebug_printer);
753 dt_device_fini(&m->opd_dt_dev);
758 static struct lu_device *osp_device_alloc(const struct lu_env *env,
759 struct lu_device_type *t,
760 struct lustre_cfg *lcfg)
762 struct osp_device *m;
767 l = ERR_PTR(-ENOMEM);
772 dt_device_init(&m->opd_dt_dev, t);
773 rc = osp_init0(env, m, t, lcfg);
775 osp_device_free(env, l);
782 static struct lu_device *osp_device_fini(const struct lu_env *env,
785 struct osp_device *m = lu2osp_dev(d);
786 struct obd_import *imp;
791 if (m->opd_storage_exp)
792 obd_disconnect(m->opd_storage_exp);
794 imp = m->opd_obd->u.cli.cl_import;
796 if (imp->imp_rq_pool) {
797 ptlrpc_free_rq_pool(imp->imp_rq_pool);
798 imp->imp_rq_pool = NULL;
801 obd_cleanup_client_import(m->opd_obd);
804 lprocfs_remove(&m->opd_symlink);
807 ptlrpc_lprocfs_unregister_obd(m->opd_obd);
808 lprocfs_obd_cleanup(m->opd_obd);
810 if (m->opd_connect_mdt) {
811 struct client_obd *cli = &m->opd_obd->u.cli;
812 if (cli->cl_rpc_lock != NULL) {
813 OBD_FREE_PTR(cli->cl_rpc_lock);
814 cli->cl_rpc_lock = NULL;
818 rc = client_obd_cleanup(m->opd_obd);
819 LASSERTF(rc == 0, "error %d\n", rc);
826 static int osp_reconnect(const struct lu_env *env,
827 struct obd_export *exp, struct obd_device *obd,
828 struct obd_uuid *cluuid,
829 struct obd_connect_data *data,
836 * we use exports to track all LOD users
838 static int osp_obd_connect(const struct lu_env *env, struct obd_export **exp,
839 struct obd_device *obd, struct obd_uuid *cluuid,
840 struct obd_connect_data *data, void *localdata)
842 struct osp_device *osp = lu2osp_dev(obd->obd_lu_dev);
843 struct obd_connect_data *ocd;
844 struct obd_import *imp;
845 struct lustre_handle conn;
850 CDEBUG(D_CONFIG, "connect #%d\n", osp->opd_connects);
852 rc = class_connect(&conn, obd, cluuid);
856 *exp = class_conn2export(&conn);
857 /* Why should there ever be more than 1 connect? */
859 LASSERT(osp->opd_connects == 1);
863 imp = osp->opd_obd->u.cli.cl_import;
864 imp->imp_dlm_handle = conn;
866 LASSERT(data != NULL);
867 LASSERT(data->ocd_connect_flags & OBD_CONNECT_INDEX);
868 ocd = &imp->imp_connect_data;
871 imp->imp_connect_flags_orig = ocd->ocd_connect_flags;
873 ocd->ocd_version = LUSTRE_VERSION_CODE;
874 ocd->ocd_index = data->ocd_index;
875 imp->imp_connect_flags_orig = ocd->ocd_connect_flags;
877 rc = ptlrpc_connect_import(imp);
879 CERROR("%s: can't connect obd: rc = %d\n", obd->obd_name, rc);
883 ptlrpc_pinger_add_import(imp);
885 if (osp->opd_connect_mdt && data->ocd_index == 0) {
886 /* set seq controller export for MDC0 if exists */
887 struct seq_server_site *ss;
889 ss = lu_site2seq(osp2lu_dev(osp)->ld_site);
890 ss->ss_control_exp = class_export_get(*exp);
891 ss->ss_server_fld->lsf_control_exp = *exp;
898 * once last export (we don't count self-export) disappeared
899 * osp can be released
901 static int osp_obd_disconnect(struct obd_export *exp)
903 struct obd_device *obd = exp->exp_obd;
904 struct osp_device *osp = lu2osp_dev(obd->obd_lu_dev);
908 /* Only disconnect the underlying layers on the final disconnect. */
909 LASSERT(osp->opd_connects == 1);
912 rc = class_disconnect(exp);
914 CERROR("%s: class disconnect error: rc = %d\n",
919 /* destroy the device */
920 class_manual_cleanup(obd);
926 * lprocfs helpers still use OBD API, let's keep obd_statfs() support
928 static int osp_obd_statfs(const struct lu_env *env, struct obd_export *exp,
929 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
931 struct obd_statfs *msfs;
932 struct ptlrpc_request *req;
933 struct obd_import *imp = NULL;
938 /* Since the request might also come from lprocfs, so we need
939 * sync this with client_disconnect_export Bug15684 */
940 down_read(&exp->exp_obd->u.cli.cl_sem);
941 if (exp->exp_obd->u.cli.cl_import)
942 imp = class_import_get(exp->exp_obd->u.cli.cl_import);
943 up_read(&exp->exp_obd->u.cli.cl_sem);
947 /* We could possibly pass max_age in the request (as an absolute
948 * timestamp or a "seconds.usec ago") so the target can avoid doing
949 * extra calls into the filesystem if that isn't necessary (e.g.
950 * during mount that would help a bit). Having relative timestamps
951 * is not so great if request processing is slow, while absolute
952 * timestamps are not ideal because they need time synchronization. */
953 req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
955 class_import_put(imp);
960 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
962 ptlrpc_request_free(req);
965 ptlrpc_request_set_replen(req);
966 req->rq_request_portal = OST_CREATE_PORTAL;
967 ptlrpc_at_set_req_timeout(req);
969 if (flags & OBD_STATFS_NODELAY) {
970 /* procfs requests not want stat in wait for avoid deadlock */
971 req->rq_no_resend = 1;
972 req->rq_no_delay = 1;
975 rc = ptlrpc_queue_wait(req);
979 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
981 GOTO(out, rc = -EPROTO);
987 ptlrpc_req_finished(req);
991 static int osp_import_event(struct obd_device *obd, struct obd_import *imp,
992 enum obd_import_event event)
994 struct osp_device *d = lu2osp_dev(obd->obd_lu_dev);
997 case IMP_EVENT_DISCON:
998 d->opd_got_disconnected = 1;
999 d->opd_imp_connected = 0;
1000 if (d->opd_connect_mdt)
1002 osp_pre_update_status(d, -ENODEV);
1003 cfs_waitq_signal(&d->opd_pre_waitq);
1004 CDEBUG(D_HA, "got disconnected\n");
1006 case IMP_EVENT_INACTIVE:
1007 d->opd_imp_active = 0;
1008 if (d->opd_connect_mdt)
1010 osp_pre_update_status(d, -ENODEV);
1011 cfs_waitq_signal(&d->opd_pre_waitq);
1012 CDEBUG(D_HA, "got inactive\n");
1014 case IMP_EVENT_ACTIVE:
1015 d->opd_imp_active = 1;
1016 if (d->opd_got_disconnected)
1017 d->opd_new_connection = 1;
1018 d->opd_imp_connected = 1;
1019 d->opd_imp_seen_connected = 1;
1020 if (d->opd_connect_mdt)
1022 cfs_waitq_signal(&d->opd_pre_waitq);
1023 __osp_sync_check_for_work(d);
1024 CDEBUG(D_HA, "got connected\n");
1026 case IMP_EVENT_INVALIDATE:
1027 if (obd->obd_namespace == NULL)
1029 ldlm_namespace_cleanup(obd->obd_namespace, LDLM_FL_LOCAL_ONLY);
1032 case IMP_EVENT_DEACTIVATE:
1033 case IMP_EVENT_ACTIVATE:
1036 CERROR("%s: unsupported import event: %#x\n",
1037 obd->obd_name, event);
1042 static int osp_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
1043 void *karg, void *uarg)
1045 struct obd_device *obd = exp->exp_obd;
1046 struct osp_device *d;
1047 struct obd_ioctl_data *data = karg;
1052 LASSERT(obd->obd_lu_dev);
1053 d = lu2osp_dev(obd->obd_lu_dev);
1054 LASSERT(d->opd_dt_dev.dd_ops == &osp_dt_ops);
1056 if (!cfs_try_module_get(THIS_MODULE)) {
1057 CERROR("%s: can't get module. Is it alive?", obd->obd_name);
1062 case OBD_IOC_CLIENT_RECOVER:
1063 rc = ptlrpc_recover_import(obd->u.cli.cl_import,
1064 data->ioc_inlbuf1, 0);
1068 case IOC_OSC_SET_ACTIVE:
1069 rc = ptlrpc_set_import_active(obd->u.cli.cl_import,
1072 case OBD_IOC_PING_TARGET:
1073 rc = ptlrpc_obd_ping(obd);
1076 CERROR("%s: unrecognized ioctl %#x by %s\n", obd->obd_name,
1077 cmd, cfs_curproc_comm());
1080 cfs_module_put(THIS_MODULE);
1084 static int osp_obd_health_check(const struct lu_env *env,
1085 struct obd_device *obd)
1087 struct osp_device *d = lu2osp_dev(obd->obd_lu_dev);
1092 * 1.8/2.0 behaviour is that OST being connected once at least
1093 * is considired "healthy". and one "healty" OST is enough to
1094 * allow lustre clients to connect to MDS
1097 RETURN(!d->opd_imp_seen_connected);
1100 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
1101 LU_KEY_INIT_FINI(osp, struct osp_thread_info);
1102 static void osp_key_exit(const struct lu_context *ctx,
1103 struct lu_context_key *key, void *data)
1105 struct osp_thread_info *info = data;
1107 info->osi_attr.la_valid = 0;
1110 struct lu_context_key osp_thread_key = {
1111 .lct_tags = LCT_MD_THREAD,
1112 .lct_init = osp_key_init,
1113 .lct_fini = osp_key_fini,
1114 .lct_exit = osp_key_exit
1117 /* context key constructor/destructor: mdt_txn_key_init, mdt_txn_key_fini */
1118 LU_KEY_INIT_FINI(osp_txn, struct osp_txn_info);
1120 struct lu_context_key osp_txn_key = {
1121 .lct_tags = LCT_OSP_THREAD,
1122 .lct_init = osp_txn_key_init,
1123 .lct_fini = osp_txn_key_fini
1125 LU_TYPE_INIT_FINI(osp, &osp_thread_key, &osp_txn_key);
1127 static struct lu_device_type_operations osp_device_type_ops = {
1128 .ldto_init = osp_type_init,
1129 .ldto_fini = osp_type_fini,
1131 .ldto_start = osp_type_start,
1132 .ldto_stop = osp_type_stop,
1134 .ldto_device_alloc = osp_device_alloc,
1135 .ldto_device_free = osp_device_free,
1137 .ldto_device_fini = osp_device_fini
1140 static struct lu_device_type osp_device_type = {
1141 .ldt_tags = LU_DEVICE_DT,
1142 .ldt_name = LUSTRE_OSP_NAME,
1143 .ldt_ops = &osp_device_type_ops,
1144 .ldt_ctx_tags = LCT_MD_THREAD
1147 static struct obd_ops osp_obd_device_ops = {
1148 .o_owner = THIS_MODULE,
1149 .o_add_conn = client_import_add_conn,
1150 .o_del_conn = client_import_del_conn,
1151 .o_reconnect = osp_reconnect,
1152 .o_connect = osp_obd_connect,
1153 .o_disconnect = osp_obd_disconnect,
1154 .o_health_check = osp_obd_health_check,
1155 .o_import_event = osp_import_event,
1156 .o_iocontrol = osp_iocontrol,
1157 .o_statfs = osp_obd_statfs,
1158 .o_fid_init = client_fid_init,
1159 .o_fid_fini = client_fid_fini,
1162 struct llog_operations osp_mds_ost_orig_logops;
1164 static int __init osp_mod_init(void)
1166 struct lprocfs_static_vars lvars;
1167 cfs_proc_dir_entry_t *osc_proc_dir;
1170 rc = lu_kmem_init(osp_caches);
1174 lprocfs_osp_init_vars(&lvars);
1176 rc = class_register_type(&osp_obd_device_ops, NULL, lvars.module_vars,
1177 LUSTRE_OSP_NAME, &osp_device_type);
1179 /* create "osc" entry in procfs for compatibility purposes */
1181 lu_kmem_fini(osp_caches);
1185 lprocfs_lwp_init_vars(&lvars);
1187 rc = class_register_type(&lwp_obd_device_ops, NULL, lvars.module_vars,
1188 LUSTRE_LWP_NAME, &lwp_device_type);
1190 class_unregister_type(LUSTRE_OSP_NAME);
1191 lu_kmem_fini(osp_caches);
1195 /* Note: add_rec/delcare_add_rec will be only used by catalogs */
1196 osp_mds_ost_orig_logops = llog_osd_ops;
1197 osp_mds_ost_orig_logops.lop_add = llog_cat_add_rec;
1198 osp_mds_ost_orig_logops.lop_declare_add = llog_cat_declare_add_rec;
1200 osc_proc_dir = lprocfs_srch(proc_lustre_root, "osc");
1201 if (osc_proc_dir == NULL) {
1202 osc_proc_dir = lprocfs_register("osc", proc_lustre_root, NULL,
1204 if (IS_ERR(osc_proc_dir))
1205 CERROR("osp: can't create compat entry \"osc\": %d\n",
1206 (int) PTR_ERR(osc_proc_dir));
1211 static void __exit osp_mod_exit(void)
1213 lprocfs_try_remove_proc_entry("osc", proc_lustre_root);
1215 class_unregister_type(LUSTRE_LWP_NAME);
1216 class_unregister_type(LUSTRE_OSP_NAME);
1217 lu_kmem_fini(osp_caches);
1220 MODULE_AUTHOR("Intel, Inc. <http://www.intel.com/>");
1221 MODULE_DESCRIPTION("Lustre OST Proxy Device ("LUSTRE_OSP_NAME")");
1222 MODULE_LICENSE("GPL");
1224 cfs_module(osp, LUSTRE_VERSION_STRING, osp_mod_init, osp_mod_exit);