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) 2011, 2012, Intel, Inc.
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>
45 # define EXPORT_SYMTAB
47 #define DEBUG_SUBSYSTEM S_MDS
49 #include <obd_class.h>
50 #include <lustre_param.h>
52 #include "osp_internal.h"
54 /* Slab for OSP object allocation */
55 cfs_mem_cache_t *osp_object_kmem;
57 static struct lu_kmem_descr osp_caches[] = {
59 .ckd_cache = &osp_object_kmem,
60 .ckd_name = "osp_obj",
61 .ckd_size = sizeof(struct osp_object)
68 struct lu_object *osp_object_alloc(const struct lu_env *env,
69 const struct lu_object_header *hdr,
72 struct lu_object_header *h;
78 OBD_SLAB_ALLOC_PTR_GFP(o, osp_object_kmem, CFS_ALLOC_IO);
80 l = &o->opo_obj.do_lu;
83 lu_object_header_init(h);
84 dt_object_init(&o->opo_obj, h, d);
85 lu_object_add_top(h, l);
87 l->lo_ops = &osp_lu_obj_ops;
95 /* Update opd_last_used_id along with checking for gap in objid sequence */
96 void osp_update_last_id(struct osp_device *d, obd_id objid)
99 * we might have lost precreated objects due to VBR and precreate
100 * orphans, the gap in objid can be calculated properly only here
102 if (objid > le64_to_cpu(d->opd_last_used_id)) {
103 if (objid - le64_to_cpu(d->opd_last_used_id) > 1) {
104 d->opd_gap_start = le64_to_cpu(d->opd_last_used_id) + 1;
105 d->opd_gap_count = objid - d->opd_gap_start;
106 CDEBUG(D_HA, "Gap in objids: %d, start = %llu\n",
107 d->opd_gap_count, d->opd_gap_start);
109 d->opd_last_used_id = cpu_to_le64(objid);
113 static int osp_last_used_init(const struct lu_env *env, struct osp_device *m)
115 struct osp_thread_info *osi = osp_env_info(env);
116 struct dt_object_format dof = { 0 };
122 osi->osi_attr.la_valid = LA_MODE;
123 osi->osi_attr.la_mode = S_IFREG | 0644;
124 lu_local_obj_fid(&osi->osi_fid, MDD_LOV_OBJ_OID);
125 dof.dof_type = DFT_REGULAR;
126 o = dt_find_or_create(env, m->opd_storage, &osi->osi_fid, &dof,
131 rc = dt_attr_get(env, o, &osi->osi_attr, NULL);
135 /* object will be released in device cleanup path */
136 m->opd_last_used_file = o;
138 if (osi->osi_attr.la_size >= sizeof(osi->osi_id) *
139 (m->opd_index + 1)) {
140 osp_objid_buf_prep(osi, m, m->opd_index);
141 rc = dt_record_read(env, o, &osi->osi_lb, &osi->osi_off);
145 /* reset value to 0, just to make sure and change file's size */
148 m->opd_last_used_id = 0;
149 osp_objid_buf_prep(osi, m, m->opd_index);
151 th = dt_trans_create(env, m->opd_storage);
153 GOTO(out, rc = PTR_ERR(th));
155 rc = dt_declare_record_write(env, m->opd_last_used_file,
156 osi->osi_lb.lb_len, osi->osi_off,
159 dt_trans_stop(env, m->opd_storage, th);
163 rc = dt_trans_start_local(env, m->opd_storage, th);
165 dt_trans_stop(env, m->opd_storage, th);
169 rc = dt_record_write(env, m->opd_last_used_file, &osi->osi_lb,
171 dt_trans_stop(env, m->opd_storage, th);
177 CERROR("%s: can't initialize lov_objid: %d\n",
178 m->opd_obd->obd_name, rc);
179 lu_object_put(env, &o->do_lu);
180 m->opd_last_used_file = NULL;
184 static void osp_last_used_fini(const struct lu_env *env, struct osp_device *d)
186 lu_object_put(env, &d->opd_last_used_file->do_lu);
187 d->opd_last_used_file = NULL;
190 static int osp_shutdown(const struct lu_env *env, struct osp_device *d)
192 struct obd_import *imp;
196 /* release last_used file */
197 osp_last_used_fini(env, d);
199 imp = d->opd_obd->u.cli.cl_import;
201 /* Mark import deactivated now, so we don't try to reconnect if any
202 * of the cleanup RPCs fails (e.g. ldlm cancel, etc). We don't
203 * fully deactivate the import, or that would drop all requests. */
204 cfs_spin_lock(&imp->imp_lock);
205 imp->imp_deactive = 1;
206 cfs_spin_unlock(&imp->imp_lock);
208 ptlrpc_deactivate_import(imp);
210 /* Some non-replayable imports (MDS's OSCs) are pinged, so just
211 * delete it regardless. (It's safe to delete an import that was
213 (void)ptlrpc_pinger_del_import(imp);
215 rc = ptlrpc_disconnect_import(imp, 0);
217 CERROR("%s: can't disconnect: rc = %d\n",
218 d->opd_obd->obd_name, rc);
220 ptlrpc_invalidate_import(imp);
222 /* stop precreate thread */
223 osp_precreate_fini(d);
225 /* stop sync thread */
231 static int osp_process_config(const struct lu_env *env,
232 struct lu_device *dev, struct lustre_cfg *lcfg)
234 struct osp_device *d = lu2osp_dev(dev);
235 struct lprocfs_static_vars lvars = { 0 };
240 switch (lcfg->lcfg_command) {
242 lu_dev_del_linkage(dev->ld_site, dev);
243 rc = osp_shutdown(env, d);
246 lprocfs_osp_init_vars(&lvars);
249 rc = class_process_proc_param(PARAM_OSC, lvars.obd_vars,
254 /* class_process_proc_param() haven't found matching
255 * parameter and returned ENOSYS so that layer(s)
256 * below could use that. But OSP is the bottom, so
258 CERROR("%s: unknown param %s\n",
259 (char *)lustre_cfg_string(lcfg, 0),
260 (char *)lustre_cfg_string(lcfg, 1));
265 CERROR("%s: unknown command %u\n",
266 (char *)lustre_cfg_string(lcfg, 0), lcfg->lcfg_command);
274 static int osp_recovery_complete(const struct lu_env *env,
275 struct lu_device *dev)
277 struct osp_device *osp = lu2osp_dev(dev);
281 osp->opd_recovery_completed = 1;
282 cfs_waitq_signal(&osp->opd_pre_waitq);
286 const struct lu_device_operations osp_lu_ops = {
287 .ldo_object_alloc = osp_object_alloc,
288 .ldo_process_config = osp_process_config,
289 .ldo_recovery_complete = osp_recovery_complete,
293 * provides with statfs from corresponded OST
296 static int osp_statfs(const struct lu_env *env, struct dt_device *dev,
297 struct obd_statfs *sfs)
299 struct osp_device *d = dt2osp_dev(dev);
303 if (unlikely(d->opd_imp_active == 0)) {
305 * in case of inactive OST we return nulls
306 * so that caller can understand this device
307 * is unusable for new objects
309 * XXX: shouldn't we take normal statfs and fill
310 * just few specific fields with zeroes?
312 memset(sfs, 0, sizeof(*sfs));
313 sfs->os_bsize = 4096;
317 /* return recently updated data */
318 *sfs = d->opd_statfs;
321 * layer above osp (usually lod) can use ffree to estimate
322 * how many objects are available for immediate creation
324 cfs_spin_lock(&d->opd_pre_lock);
325 sfs->os_ffree = d->opd_pre_last_created - d->opd_pre_next;
326 cfs_spin_unlock(&d->opd_pre_lock);
328 CDEBUG(D_OTHER, "%s: "LPU64" blocks, "LPU64" free, "LPU64" avail, "
329 LPU64" files, "LPU64" free files\n", d->opd_obd->obd_name,
330 sfs->os_blocks, sfs->os_bfree, sfs->os_bavail,
331 sfs->os_files, sfs->os_ffree);
335 static int osp_sync(const struct lu_env *env, struct dt_device *dev)
340 * XXX: wake up sync thread, command it to start flushing asap?
346 static const struct dt_device_operations osp_dt_ops = {
347 .dt_statfs = osp_statfs,
351 static int osp_connect_to_osd(const struct lu_env *env, struct osp_device *m,
354 struct obd_connect_data *data = NULL;
355 struct obd_device *obd;
360 LASSERT(m->opd_storage_exp == NULL);
366 obd = class_name2obd(nextdev);
368 CERROR("%s: can't locate next device: %s\n",
369 m->opd_obd->obd_name, nextdev);
370 GOTO(out, rc = -ENOTCONN);
373 rc = obd_connect(env, &m->opd_storage_exp, obd, &obd->obd_uuid, data,
376 CERROR("%s: cannot connect to next dev %s: rc = %d\n",
377 m->opd_obd->obd_name, nextdev, rc);
381 m->opd_dt_dev.dd_lu_dev.ld_site =
382 m->opd_storage_exp->exp_obd->obd_lu_dev->ld_site;
383 LASSERT(m->opd_dt_dev.dd_lu_dev.ld_site);
384 m->opd_storage = lu2dt_dev(m->opd_storage_exp->exp_obd->obd_lu_dev);
391 static int osp_init0(const struct lu_env *env, struct osp_device *m,
392 struct lu_device_type *ldt, struct lustre_cfg *cfg)
394 struct lprocfs_static_vars lvars = { 0 };
395 struct proc_dir_entry *osc_proc_dir;
396 struct obd_import *imp;
398 char *src, *ost, *mdt, *osdname = NULL;
403 m->opd_obd = class_name2obd(lustre_cfg_string(cfg, 0));
404 if (m->opd_obd == NULL) {
405 CERROR("Cannot find obd with name %s\n",
406 lustre_cfg_string(cfg, 0));
410 /* There is no record in the MDT configuration for the local disk
411 * device, so we have to extract this from elsewhere in the profile.
412 * The only information we get at setup is from the OSC records:
413 * setup 0:{fsname}-OSTxxxx-osc[-MDTxxxx] 1:lustre-OST0000_UUID 2:NID
414 * Note that 1.8 generated configs are missing the -MDTxxxx part.
415 * We need to reconstruct the name of the underlying OSD from this:
416 * {fsname}-{svname}-osd, for example "lustre-MDT0000-osd". We
417 * also need to determine the OST index from this - will be used
418 * to calculate the offset in shared lov_objids file later */
420 src = lustre_cfg_string(cfg, 0);
424 ost = strstr(src, "-OST");
428 idx = simple_strtol(ost + 4, &mdt, 16);
429 if (mdt[0] != '-' || idx > INT_MAX || idx < 0) {
430 CERROR("%s: invalid OST index in '%s'\n",
431 m->opd_obd->obd_name, src);
432 GOTO(out_fini, rc = -EINVAL);
437 /* check the fsname length, and after this everything else will fit */
438 if (idx > MTI_NAME_MAXLEN) {
439 CERROR("%s: fsname too long in '%s'\n",
440 m->opd_obd->obd_name, src);
441 GOTO(out_fini, rc = -EINVAL);
444 OBD_ALLOC(osdname, MAX_OBD_NAME);
446 GOTO(out_fini, rc = -ENOMEM);
448 memcpy(osdname, src, idx); /* copy just the fsname part */
451 mdt = strstr(mdt, "-MDT");
452 if (mdt == NULL) /* 1.8 configs don't have "-MDT0000" at the end */
453 strcat(osdname, "-MDT0000");
455 strcat(osdname, mdt);
456 strcat(osdname, "-osd");
457 CDEBUG(D_HA, "%s: connect to %s (%s)\n",
458 m->opd_obd->obd_name, osdname, src);
460 m->opd_dt_dev.dd_lu_dev.ld_ops = &osp_lu_ops;
461 m->opd_dt_dev.dd_ops = &osp_dt_ops;
462 m->opd_obd->obd_lu_dev = &m->opd_dt_dev.dd_lu_dev;
464 rc = osp_connect_to_osd(env, m, osdname);
468 rc = ptlrpcd_addref();
470 GOTO(out_disconnect, rc);
472 rc = client_obd_setup(m->opd_obd, cfg);
474 CERROR("%s: can't setup obd: %d\n", m->opd_obd->obd_name, rc);
478 lprocfs_osp_init_vars(&lvars);
479 if (lprocfs_obd_setup(m->opd_obd, lvars.obd_vars) == 0)
480 ptlrpc_lprocfs_register_obd(m->opd_obd);
482 /* for compatibility we link old procfs's OSC entries to osp ones */
483 osc_proc_dir = lprocfs_srch(proc_lustre_root, "osc");
485 cfs_proc_dir_entry_t *symlink = NULL;
488 OBD_ALLOC(name, strlen(m->opd_obd->obd_name) + 1);
490 GOTO(out, rc = -ENOMEM);
492 strcpy(name, m->opd_obd->obd_name);
493 if (strstr(name, "osc"))
494 symlink = lprocfs_add_symlink(name, osc_proc_dir,
496 m->opd_obd->obd_name);
497 OBD_FREE(name, strlen(m->opd_obd->obd_name) + 1);
498 m->opd_symlink = symlink;
502 * Initialize last id from the storage - will be used in orphan cleanup
504 rc = osp_last_used_init(env, m);
509 * Initialize precreation thread, it handles new connections as well
511 rc = osp_init_precreate(m);
513 GOTO(out_last_used, rc);
516 * Initialize synhronization mechanism taking care of propogating
517 * changes to OST in near transactional manner
519 rc = osp_sync_init(env, m);
521 GOTO(out_precreat, rc);
524 * Initiate connect to OST
526 ll_generate_random_uuid(uuid);
527 class_uuid_unparse(uuid, &m->opd_cluuid);
529 imp = m->opd_obd->u.cli.cl_import;
531 rc = ptlrpc_init_import(imp);
535 OBD_FREE(osdname, MAX_OBD_NAME);
539 /* stop sync thread */
542 /* stop precreate thread */
543 osp_precreate_fini(m);
545 osp_last_used_fini(env, m);
547 ptlrpc_lprocfs_unregister_obd(m->opd_obd);
548 lprocfs_obd_cleanup(m->opd_obd);
549 class_destroy_import(m->opd_obd->u.cli.cl_import);
550 client_obd_cleanup(m->opd_obd);
554 obd_disconnect(m->opd_storage_exp);
557 OBD_FREE(osdname, MAX_OBD_NAME);
561 static struct lu_device *osp_device_free(const struct lu_env *env,
562 struct lu_device *lu)
564 struct osp_device *m = lu2osp_dev(lu);
568 dt_device_fini(&m->opd_dt_dev);
573 static struct lu_device *osp_device_alloc(const struct lu_env *env,
574 struct lu_device_type *t,
575 struct lustre_cfg *lcfg)
577 struct osp_device *m;
582 l = ERR_PTR(-ENOMEM);
587 dt_device_init(&m->opd_dt_dev, t);
588 rc = osp_init0(env, m, t, lcfg);
590 osp_device_free(env, l);
597 static struct lu_device *osp_device_fini(const struct lu_env *env,
600 struct osp_device *m = lu2osp_dev(d);
601 struct obd_import *imp;
606 LASSERT(m->opd_storage_exp);
607 obd_disconnect(m->opd_storage_exp);
609 imp = m->opd_obd->u.cli.cl_import;
611 if (imp->imp_rq_pool) {
612 ptlrpc_free_rq_pool(imp->imp_rq_pool);
613 imp->imp_rq_pool = NULL;
616 obd_cleanup_client_import(m->opd_obd);
619 lprocfs_remove(&m->opd_symlink);
622 ptlrpc_lprocfs_unregister_obd(m->opd_obd);
623 lprocfs_obd_cleanup(m->opd_obd);
625 rc = client_obd_cleanup(m->opd_obd);
626 LASSERTF(rc == 0, "error %d\n", rc);
633 static int osp_reconnect(const struct lu_env *env,
634 struct obd_export *exp, struct obd_device *obd,
635 struct obd_uuid *cluuid,
636 struct obd_connect_data *data,
643 * we use exports to track all LOD users
645 static int osp_obd_connect(const struct lu_env *env, struct obd_export **exp,
646 struct obd_device *obd, struct obd_uuid *cluuid,
647 struct obd_connect_data *data, void *localdata)
649 struct osp_device *osp = lu2osp_dev(obd->obd_lu_dev);
650 struct obd_connect_data *ocd;
651 struct obd_import *imp;
652 struct lustre_handle conn;
657 CDEBUG(D_CONFIG, "connect #%d\n", osp->opd_connects);
659 rc = class_connect(&conn, obd, cluuid);
663 *exp = class_conn2export(&conn);
665 /* Why should there ever be more than 1 connect? */
667 LASSERT(osp->opd_connects == 1);
669 imp = osp->opd_obd->u.cli.cl_import;
670 imp->imp_dlm_handle = conn;
672 ocd = &imp->imp_connect_data;
673 ocd->ocd_connect_flags = OBD_CONNECT_AT |
676 #ifdef HAVE_LRU_RESIZE_SUPPORT
677 OBD_CONNECT_LRU_RESIZE |
680 OBD_CONNECT_OSS_CAPA |
681 OBD_CONNECT_REQPORTAL |
682 OBD_CONNECT_SKIP_ORPHAN |
684 ocd->ocd_version = LUSTRE_VERSION_CODE;
685 LASSERT(data->ocd_connect_flags & OBD_CONNECT_INDEX);
686 ocd->ocd_index = data->ocd_index;
687 imp->imp_connect_flags_orig = ocd->ocd_connect_flags;
689 rc = ptlrpc_connect_import(imp);
691 CERROR("%s: can't connect obd: rc = %d\n", obd->obd_name, rc);
695 ptlrpc_pinger_add_import(imp);
702 * once last export (we don't count self-export) disappeared
703 * osp can be released
705 static int osp_obd_disconnect(struct obd_export *exp)
707 struct obd_device *obd = exp->exp_obd;
708 struct osp_device *osp = lu2osp_dev(obd->obd_lu_dev);
713 /* Only disconnect the underlying layers on the final disconnect. */
714 LASSERT(osp->opd_connects == 1);
717 rc = class_disconnect(exp);
719 /* destroy the device */
721 class_manual_cleanup(obd);
727 * lprocfs helpers still use OBD API, let's keep obd_statfs() support
729 static int osp_obd_statfs(const struct lu_env *env, struct obd_export *exp,
730 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
732 struct obd_statfs *msfs;
733 struct ptlrpc_request *req;
734 struct obd_import *imp = NULL;
739 /* Since the request might also come from lprocfs, so we need
740 * sync this with client_disconnect_export Bug15684 */
741 cfs_down_read(&exp->exp_obd->u.cli.cl_sem);
742 if (exp->exp_obd->u.cli.cl_import)
743 imp = class_import_get(exp->exp_obd->u.cli.cl_import);
744 cfs_up_read(&exp->exp_obd->u.cli.cl_sem);
748 /* We could possibly pass max_age in the request (as an absolute
749 * timestamp or a "seconds.usec ago") so the target can avoid doing
750 * extra calls into the filesystem if that isn't necessary (e.g.
751 * during mount that would help a bit). Having relative timestamps
752 * is not so great if request processing is slow, while absolute
753 * timestamps are not ideal because they need time synchronization. */
754 req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
756 class_import_put(imp);
761 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
763 ptlrpc_request_free(req);
766 ptlrpc_request_set_replen(req);
767 req->rq_request_portal = OST_CREATE_PORTAL;
768 ptlrpc_at_set_req_timeout(req);
770 if (flags & OBD_STATFS_NODELAY) {
771 /* procfs requests not want stat in wait for avoid deadlock */
772 req->rq_no_resend = 1;
773 req->rq_no_delay = 1;
776 rc = ptlrpc_queue_wait(req);
780 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
782 GOTO(out, rc = -EPROTO);
788 ptlrpc_req_finished(req);
792 static int osp_import_event(struct obd_device *obd, struct obd_import *imp,
793 enum obd_import_event event)
795 struct osp_device *d = lu2osp_dev(obd->obd_lu_dev);
798 case IMP_EVENT_DISCON:
799 d->opd_got_disconnected = 1;
800 d->opd_imp_connected = 0;
801 osp_pre_update_status(d, -ENODEV);
802 cfs_waitq_signal(&d->opd_pre_waitq);
803 CDEBUG(D_HA, "got disconnected\n");
805 case IMP_EVENT_INACTIVE:
806 d->opd_imp_active = 0;
807 osp_pre_update_status(d, -ENODEV);
808 cfs_waitq_signal(&d->opd_pre_waitq);
809 CDEBUG(D_HA, "got inactive\n");
811 case IMP_EVENT_ACTIVE:
812 d->opd_imp_active = 1;
813 if (d->opd_got_disconnected)
814 d->opd_new_connection = 1;
815 d->opd_imp_connected = 1;
816 d->opd_imp_seen_connected = 1;
817 cfs_waitq_signal(&d->opd_pre_waitq);
818 __osp_sync_check_for_work(d);
819 CDEBUG(D_HA, "got connected\n");
822 CERROR("%s: unsupported import event: %#x\n",
823 obd->obd_name, event);
828 static int osp_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
829 void *karg, void *uarg)
831 struct obd_device *obd = exp->exp_obd;
832 struct osp_device *d;
833 struct obd_ioctl_data *data = karg;
838 LASSERT(obd->obd_lu_dev);
839 d = lu2osp_dev(obd->obd_lu_dev);
840 LASSERT(d->opd_dt_dev.dd_ops == &osp_dt_ops);
842 if (!cfs_try_module_get(THIS_MODULE)) {
843 CERROR("%s: can't get module. Is it alive?", obd->obd_name);
848 case OBD_IOC_CLIENT_RECOVER:
849 rc = ptlrpc_recover_import(obd->u.cli.cl_import,
850 data->ioc_inlbuf1, 0);
854 case IOC_OSC_SET_ACTIVE:
855 rc = ptlrpc_set_import_active(obd->u.cli.cl_import,
858 case OBD_IOC_PING_TARGET:
859 rc = ptlrpc_obd_ping(obd);
862 CERROR("%s: unrecognized ioctl %#x by %s\n", obd->obd_name,
863 cmd, cfs_curproc_comm());
866 cfs_module_put(THIS_MODULE);
870 static int osp_obd_health_check(const struct lu_env *env,
871 struct obd_device *obd)
873 struct osp_device *d = lu2osp_dev(obd->obd_lu_dev);
878 * 1.8/2.0 behaviour is that OST being connected once at least
879 * is considired "healthy". and one "healty" OST is enough to
880 * allow lustre clients to connect to MDS
883 RETURN(!d->opd_imp_seen_connected);
886 /* context key constructor/destructor: mdt_key_init, mdt_key_fini */
887 LU_KEY_INIT_FINI(osp, struct osp_thread_info);
888 static void osp_key_exit(const struct lu_context *ctx,
889 struct lu_context_key *key, void *data)
891 struct osp_thread_info *info = data;
893 info->osi_attr.la_valid = 0;
896 struct lu_context_key osp_thread_key = {
897 .lct_tags = LCT_MD_THREAD,
898 .lct_init = osp_key_init,
899 .lct_fini = osp_key_fini,
900 .lct_exit = osp_key_exit
903 /* context key constructor/destructor: mdt_txn_key_init, mdt_txn_key_fini */
904 LU_KEY_INIT_FINI(osp_txn, struct osp_txn_info);
906 struct lu_context_key osp_txn_key = {
907 .lct_tags = LCT_OSP_THREAD,
908 .lct_init = osp_txn_key_init,
909 .lct_fini = osp_txn_key_fini
911 LU_TYPE_INIT_FINI(osp, &osp_thread_key, &osp_txn_key);
913 static struct lu_device_type_operations osp_device_type_ops = {
914 .ldto_init = osp_type_init,
915 .ldto_fini = osp_type_fini,
917 .ldto_start = osp_type_start,
918 .ldto_stop = osp_type_stop,
920 .ldto_device_alloc = osp_device_alloc,
921 .ldto_device_free = osp_device_free,
923 .ldto_device_fini = osp_device_fini
926 static struct lu_device_type osp_device_type = {
927 .ldt_tags = LU_DEVICE_DT,
928 .ldt_name = LUSTRE_OSP_NAME,
929 .ldt_ops = &osp_device_type_ops,
930 .ldt_ctx_tags = LCT_MD_THREAD
933 static struct obd_ops osp_obd_device_ops = {
934 .o_owner = THIS_MODULE,
935 .o_add_conn = client_import_add_conn,
936 .o_del_conn = client_import_del_conn,
937 .o_reconnect = osp_reconnect,
938 .o_connect = osp_obd_connect,
939 .o_disconnect = osp_obd_disconnect,
940 .o_health_check = osp_obd_health_check,
941 .o_import_event = osp_import_event,
942 .o_iocontrol = osp_iocontrol,
943 .o_statfs = osp_obd_statfs,
946 static int __init osp_mod_init(void)
948 struct lprocfs_static_vars lvars;
949 cfs_proc_dir_entry_t *osc_proc_dir;
952 rc = lu_kmem_init(osp_caches);
956 lprocfs_osp_init_vars(&lvars);
958 rc = class_register_type(&osp_obd_device_ops, NULL, lvars.module_vars,
959 LUSTRE_OSP_NAME, &osp_device_type);
961 /* create "osc" entry in procfs for compatibility purposes */
963 lu_kmem_fini(osp_caches);
967 osc_proc_dir = lprocfs_srch(proc_lustre_root, "osc");
968 if (osc_proc_dir == NULL) {
969 osc_proc_dir = lprocfs_register("osc", proc_lustre_root, NULL,
971 if (IS_ERR(osc_proc_dir))
972 CERROR("osp: can't create compat entry \"osc\": %d\n",
973 (int) PTR_ERR(osc_proc_dir));
978 static void __exit osp_mod_exit(void)
980 lprocfs_try_remove_proc_entry("osc", proc_lustre_root);
982 class_unregister_type(LUSTRE_OSP_NAME);
983 lu_kmem_fini(osp_caches);
986 MODULE_AUTHOR("Intel, Inc. <http://www.intel.com/>");
987 MODULE_DESCRIPTION("Lustre OST Proxy Device ("LUSTRE_OSP_NAME")");
988 MODULE_LICENSE("GPL");
990 cfs_module(osp, LUSTRE_VERSION_STRING, osp_mod_init, osp_mod_exit);