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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2015, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/ofd/ofd_dev.c
34 * This file contains OSD API methods for OBD Filter Device (OFD),
35 * request handlers and supplemental functions to set OFD up and clean it up.
37 * Author: Alex Zhuravlev <alexey.zhuravlev@intel.com>
38 * Author: Mike Pershin <mike.pershin@intel.com>
39 * Author: Johann Lombardi <johann.lombardi@intel.com>
42 * The OBD Filter Device (OFD) module belongs to the Object Storage
43 * Server stack and connects the RPC oriented Unified Target (TGT)
44 * layer (see lustre/include/lu_target.h) to the storage oriented OSD
45 * layer (see Documentation/osd-api.txt).
53 * OFD implements the LU and OBD device APIs and is responsible for:
55 * - Handling client requests (create, destroy, bulk IO, setattr,
56 * get_info, set_info, statfs) for the objects belonging to the OST
57 * (together with TGT).
59 * - Providing grant space management which allows clients to reserve
60 * disk space for data writeback. OFD tracks grants on global and
63 * - Handling object precreation requests from MDTs.
65 * - Operating the LDLM service that allows clients to maintain object
66 * data cache coherence.
69 #define DEBUG_SUBSYSTEM S_FILTER
71 #include <obd_class.h>
72 #include <lustre_param.h>
73 #include <lustre_fid.h>
74 #include <lustre_lfsck.h>
75 #include <lustre/lustre_idl.h>
76 #include <lustre_dlm.h>
77 #include <lustre_quota.h>
78 #include <lustre_nodemap.h>
80 #include "ofd_internal.h"
82 /* Slab for OFD object allocation */
83 static struct kmem_cache *ofd_object_kmem;
85 static struct lu_kmem_descr ofd_caches[] = {
87 .ckd_cache = &ofd_object_kmem,
88 .ckd_name = "ofd_obj",
89 .ckd_size = sizeof(struct ofd_object)
97 * Connect OFD to the next device in the stack.
99 * This function is used for device stack configuration and links OFD
100 * device with bottom OSD device.
102 * \param[in] env execution environment
103 * \param[in] m OFD device
104 * \param[in] next name of next device in the stack
105 * \param[out] exp export to return
107 * \retval 0 and export in \a exp if successful
108 * \retval negative value on error
110 static int ofd_connect_to_next(const struct lu_env *env, struct ofd_device *m,
111 const char *next, struct obd_export **exp)
113 struct obd_connect_data *data = NULL;
114 struct obd_device *obd;
120 GOTO(out, rc = -ENOMEM);
122 obd = class_name2obd(next);
124 CERROR("%s: can't locate next device: %s\n",
126 GOTO(out, rc = -ENOTCONN);
129 data->ocd_connect_flags = OBD_CONNECT_VERSION;
130 data->ocd_version = LUSTRE_VERSION_CODE;
132 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
134 CERROR("%s: cannot connect to next dev %s: rc = %d\n",
135 ofd_name(m), next, rc);
139 m->ofd_dt_dev.dd_lu_dev.ld_site =
140 m->ofd_osd_exp->exp_obd->obd_lu_dev->ld_site;
141 LASSERT(m->ofd_dt_dev.dd_lu_dev.ld_site);
142 m->ofd_osd = lu2dt_dev(m->ofd_osd_exp->exp_obd->obd_lu_dev);
143 m->ofd_dt_dev.dd_lu_dev.ld_site->ls_top_dev = &m->ofd_dt_dev.dd_lu_dev;
152 * Initialize stack of devices.
154 * This function initializes OFD-OSD device stack to serve OST requests
156 * \param[in] env execution environment
157 * \param[in] m OFD device
158 * \param[in] cfg Lustre config for this server
160 * \retval 0 if successful
161 * \retval negative value on error
163 static int ofd_stack_init(const struct lu_env *env,
164 struct ofd_device *m, struct lustre_cfg *cfg)
166 const char *dev = lustre_cfg_string(cfg, 0);
168 struct ofd_thread_info *info = ofd_info(env);
169 struct lustre_mount_info *lmi;
170 struct lustre_mount_data *lmd;
176 lmi = server_get_mount(dev);
178 CERROR("Cannot get mount info for %s!\n", dev);
182 lmd = s2lsi(lmi->lmi_sb)->lsi_lmd;
183 if (lmd != NULL && lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
184 m->ofd_skip_lfsck = 1;
186 /* find bottom osd */
187 OBD_ALLOC(osdname, MTI_NAME_MAXLEN);
191 snprintf(osdname, MTI_NAME_MAXLEN, "%s-osd", dev);
192 rc = ofd_connect_to_next(env, m, osdname, &m->ofd_osd_exp);
193 OBD_FREE(osdname, MTI_NAME_MAXLEN);
197 d = m->ofd_osd_exp->exp_obd->obd_lu_dev;
199 m->ofd_osd = lu2dt_dev(d);
201 snprintf(info->fti_u.name, sizeof(info->fti_u.name),
202 "%s-osd", lustre_cfg_string(cfg, 0));
208 * Finalize the device stack OFD-OSD.
210 * This function cleans OFD-OSD device stack and
211 * disconnects OFD from the OSD.
213 * \param[in] env execution environment
214 * \param[in] m OFD device
215 * \param[in] top top device of stack
217 * \retval 0 if successful
218 * \retval negative value on error
220 static void ofd_stack_fini(const struct lu_env *env, struct ofd_device *m,
221 struct lu_device *top)
223 struct obd_device *obd = ofd_obd(m);
224 struct lustre_cfg_bufs bufs;
225 struct lustre_cfg *lcfg;
230 lu_site_purge(env, top->ld_site, ~0);
231 /* process cleanup, pass mdt obd name to get obd umount flags */
232 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
237 lustre_cfg_bufs_set_string(&bufs, 1, flags);
238 lcfg = lustre_cfg_new(LCFG_CLEANUP, &bufs);
243 top->ld_ops->ldo_process_config(env, top, lcfg);
244 lustre_cfg_free(lcfg);
246 lu_site_purge(env, top->ld_site, ~0);
247 if (!cfs_hash_is_empty(top->ld_site->ls_obj_hash)) {
248 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_ERROR, NULL);
249 lu_site_print(env, top->ld_site, &msgdata, lu_cdebug_printer);
252 LASSERT(m->ofd_osd_exp);
253 obd_disconnect(m->ofd_osd_exp);
258 /* For interoperability, see mdt_interop_param[]. */
259 static struct cfg_interop_param ofd_interop_param[] = {
260 { "ost.quota_type", NULL },
265 * Check if parameters are symlinks to the OSD.
267 * Some parameters were moved from ofd to osd and only their
268 * symlinks were kept in ofd by LU-3106. They are:
269 * -writehthrough_cache_enable
270 * -readcache_max_filesize
274 * Since they are not included by the static lprocfs var list, a pre-check
275 * is added for them to avoid "unknown param" errors. If they are matched
276 * in this check, they will be passed to the OSD directly.
278 * \param[in] param parameters to check
280 * \retval true if param is symlink to OSD param
283 static bool match_symlink_param(char *param)
288 if (class_match_param(param, PARAM_OST, ¶m) == 0) {
289 sval = strchr(param, '=');
291 paramlen = sval - param;
292 if (strncmp(param, "writethrough_cache_enable",
294 strncmp(param, "readcache_max_filesize",
296 strncmp(param, "read_cache_enable",
298 strncmp(param, "brw_stats", paramlen) == 0)
307 * Process various configuration parameters.
309 * This function is used by MGS to process specific configurations and
310 * pass them through to the next device in server stack, i.e. the OSD.
312 * \param[in] env execution environment
313 * \param[in] d LU device of OFD
314 * \param[in] cfg parameters to process
316 * \retval 0 if successful
317 * \retval negative value on error
319 static int ofd_process_config(const struct lu_env *env, struct lu_device *d,
320 struct lustre_cfg *cfg)
322 struct ofd_device *m = ofd_dev(d);
323 struct dt_device *dt_next = m->ofd_osd;
324 struct lu_device *next = &dt_next->dd_lu_dev;
329 switch (cfg->lcfg_command) {
331 struct obd_device *obd = ofd_obd(m);
332 /* For interoperability */
333 struct cfg_interop_param *ptr = NULL;
334 struct lustre_cfg *old_cfg = NULL;
337 param = lustre_cfg_string(cfg, 1);
339 CERROR("param is empty\n");
344 ptr = class_find_old_param(param, ofd_interop_param);
346 if (ptr->new_param == NULL) {
348 CWARN("For interoperability, skip this %s."
349 " It is obsolete.\n", ptr->old_param);
353 CWARN("Found old param %s, changed it to %s.\n",
354 ptr->old_param, ptr->new_param);
357 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
364 if (match_symlink_param(param)) {
365 rc = next->ld_ops->ldo_process_config(env, next, cfg);
369 rc = class_process_proc_param(PARAM_OST, obd->obd_vars, cfg,
371 if (rc > 0 || rc == -ENOSYS) {
372 CDEBUG(D_CONFIG, "pass param %s down the stack.\n",
374 /* we don't understand; pass it on */
375 rc = next->ld_ops->ldo_process_config(env, next, cfg);
379 case LCFG_SPTLRPC_CONF: {
384 /* others are passed further */
385 rc = next->ld_ops->ldo_process_config(env, next, cfg);
392 * Implementation of lu_object_operations::loo_object_init for OFD
394 * Allocate just the next object (OSD) in stack.
396 * \param[in] env execution environment
397 * \param[in] o lu_object of OFD object
398 * \param[in] conf additional configuration parameters, not used here
400 * \retval 0 if successful
401 * \retval negative value on error
403 static int ofd_object_init(const struct lu_env *env, struct lu_object *o,
404 const struct lu_object_conf *conf)
406 struct ofd_device *d = ofd_dev(o->lo_dev);
407 struct lu_device *under;
408 struct lu_object *below;
413 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
414 PFID(lu_object_fid(o)));
416 under = &d->ofd_osd->dd_lu_dev;
417 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
419 lu_object_add(o, below);
427 * Implementation of lu_object_operations::loo_object_free.
429 * Finish OFD object lifecycle and free its memory.
431 * \param[in] env execution environment
432 * \param[in] o LU object of OFD object
434 static void ofd_object_free(const struct lu_env *env, struct lu_object *o)
436 struct ofd_object *of = ofd_obj(o);
437 struct lu_object_header *h;
442 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
443 PFID(lu_object_fid(o)));
446 lu_object_header_fini(h);
447 OBD_SLAB_FREE_PTR(of, ofd_object_kmem);
452 * Implementation of lu_object_operations::loo_object_print.
454 * Print OFD part of compound OFD-OSD object. See lu_object_print() and
455 * LU_OBJECT_DEBUG() for more details about the compound object printing.
457 * \param[in] env execution environment
458 * \param[in] cookie opaque data passed to the printer function
459 * \param[in] p printer function to use
460 * \param[in] o LU object of OFD object
462 * \retval 0 if successful
463 * \retval negative value on error
465 static int ofd_object_print(const struct lu_env *env, void *cookie,
466 lu_printer_t p, const struct lu_object *o)
468 return (*p)(env, cookie, LUSTRE_OST_NAME"-object@%p", o);
471 static struct lu_object_operations ofd_obj_ops = {
472 .loo_object_init = ofd_object_init,
473 .loo_object_free = ofd_object_free,
474 .loo_object_print = ofd_object_print
478 * Implementation of lu_device_operations::lod_object_alloc.
480 * This function allocates OFD part of compound OFD-OSD object and
481 * initializes its header, because OFD is the top device in stack
483 * \param[in] env execution environment
484 * \param[in] hdr object header, NULL for OFD
485 * \param[in] d lu_device
487 * \retval allocated object if successful
488 * \retval NULL value on failed allocation
490 static struct lu_object *ofd_object_alloc(const struct lu_env *env,
491 const struct lu_object_header *hdr,
494 struct ofd_object *of;
498 OBD_SLAB_ALLOC_PTR_GFP(of, ofd_object_kmem, GFP_NOFS);
501 struct lu_object_header *h;
503 o = &of->ofo_obj.do_lu;
505 lu_object_header_init(h);
506 lu_object_init(o, h, d);
507 lu_object_add_top(h, o);
508 o->lo_ops = &ofd_obj_ops;
516 * Return the result of LFSCK run to the OFD.
518 * Notify OFD about result of LFSCK run. That may block the new object
519 * creation until problem is fixed by LFSCK.
521 * \param[in] env execution environment
522 * \param[in] data pointer to the OFD device
523 * \param[in] event LFSCK event type
525 * \retval 0 if successful
526 * \retval negative value on unknown event
528 static int ofd_lfsck_out_notify(const struct lu_env *env, void *data,
529 enum lfsck_events event)
531 struct ofd_device *ofd = data;
532 struct obd_device *obd = ofd_obd(ofd);
535 case LE_LASTID_REBUILDING:
536 CWARN("%s: Found crashed LAST_ID, deny creating new OST-object "
537 "on the device until the LAST_ID rebuilt successfully.\n",
539 down_write(&ofd->ofd_lastid_rwsem);
540 ofd->ofd_lastid_rebuilding = 1;
541 up_write(&ofd->ofd_lastid_rwsem);
543 case LE_LASTID_REBUILT: {
544 down_write(&ofd->ofd_lastid_rwsem);
545 ofd_seqs_free(env, ofd);
546 ofd->ofd_lastid_rebuilding = 0;
547 ofd->ofd_lastid_gen++;
548 up_write(&ofd->ofd_lastid_rwsem);
549 CWARN("%s: Rebuilt crashed LAST_ID files successfully.\n",
554 CERROR("%s: unknown lfsck event: rc = %d\n",
555 ofd_name(ofd), event);
563 * Implementation of lu_device_operations::ldo_prepare.
565 * This method is called after layer has been initialized and before it starts
566 * serving user requests. In OFD it starts lfsk check routines and initializes
569 * \param[in] env execution environment
570 * \param[in] pdev higher device in stack, NULL for OFD
571 * \param[in] dev lu_device of OFD device
573 * \retval 0 if successful
574 * \retval negative value on error
576 static int ofd_prepare(const struct lu_env *env, struct lu_device *pdev,
577 struct lu_device *dev)
579 struct ofd_thread_info *info;
580 struct ofd_device *ofd = ofd_dev(dev);
581 struct obd_device *obd = ofd_obd(ofd);
582 struct lu_device *next = &ofd->ofd_osd->dd_lu_dev;
587 info = ofd_info_init(env, NULL);
591 /* initialize lower device */
592 rc = next->ld_ops->ldo_prepare(env, dev, next);
596 rc = lfsck_register(env, ofd->ofd_osd, ofd->ofd_osd, obd,
597 ofd_lfsck_out_notify, ofd, false);
599 CERROR("%s: failed to initialize lfsck: rc = %d\n",
604 rc = lfsck_register_namespace(env, ofd->ofd_osd, ofd->ofd_namespace);
605 /* The LFSCK instance is registered just now, so it must be there when
606 * register the namespace to such instance. */
607 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
609 target_recovery_init(&ofd->ofd_lut, tgt_request_handle);
610 LASSERT(obd->obd_no_conn);
611 spin_lock(&obd->obd_dev_lock);
612 obd->obd_no_conn = 0;
613 spin_unlock(&obd->obd_dev_lock);
615 if (obd->obd_recovering == 0)
616 ofd_postrecov(env, ofd);
622 * Implementation of lu_device_operations::ldo_recovery_complete.
624 * This method notifies all layers about 'recovery complete' event. That means
625 * device is in full state and consistent. An OFD calculates available grant
626 * space upon this event.
628 * \param[in] env execution environment
629 * \param[in] dev lu_device of OFD device
631 * \retval 0 if successful
632 * \retval negative value on error
634 static int ofd_recovery_complete(const struct lu_env *env,
635 struct lu_device *dev)
637 struct ofd_thread_info *oti = ofd_info(env);
638 struct ofd_device *ofd = ofd_dev(dev);
639 struct lu_device *next = &ofd->ofd_osd->dd_lu_dev;
645 * Grant space for object precreation on the self export.
646 * The initial reserved space (i.e. 10MB for zfs and 280KB for ldiskfs)
647 * is enough to create 10k objects. More space is then acquired for
648 * precreation in ofd_grant_create().
650 memset(&oti->fti_ocd, 0, sizeof(oti->fti_ocd));
651 oti->fti_ocd.ocd_grant = OST_MAX_PRECREATE / 2;
652 oti->fti_ocd.ocd_grant *= ofd->ofd_dt_conf.ddp_inodespace;
653 oti->fti_ocd.ocd_connect_flags = OBD_CONNECT_GRANT |
654 OBD_CONNECT_GRANT_PARAM;
655 ofd_grant_connect(env, dev->ld_obd->obd_self_export, &oti->fti_ocd,
657 rc = next->ld_ops->ldo_recovery_complete(env, next);
662 * lu_device_operations matrix for OFD device.
664 static struct lu_device_operations ofd_lu_ops = {
665 .ldo_object_alloc = ofd_object_alloc,
666 .ldo_process_config = ofd_process_config,
667 .ldo_recovery_complete = ofd_recovery_complete,
668 .ldo_prepare = ofd_prepare,
671 LPROC_SEQ_FOPS(lprocfs_nid_stats_clear);
674 * Initialize all needed procfs entries for OFD device.
676 * \param[in] ofd OFD device
678 * \retval 0 if successful
679 * \retval negative value on error
681 static int ofd_procfs_init(struct ofd_device *ofd)
683 struct obd_device *obd = ofd_obd(ofd);
684 struct proc_dir_entry *entry;
689 /* lprocfs must be setup before the ofd so state can be safely added
690 * to /proc incrementally as the ofd is setup */
691 obd->obd_vars = lprocfs_ofd_obd_vars;
692 rc = lprocfs_obd_setup(obd);
694 CERROR("%s: lprocfs_obd_setup failed: %d.\n",
699 rc = lprocfs_alloc_obd_stats(obd, LPROC_OFD_STATS_LAST);
701 CERROR("%s: lprocfs_alloc_obd_stats failed: %d.\n",
703 GOTO(obd_cleanup, rc);
706 obd->obd_uses_nid_stats = 1;
708 entry = lprocfs_register("exports", obd->obd_proc_entry, NULL, NULL);
711 CERROR("%s: error %d setting up lprocfs for %s\n",
712 obd->obd_name, rc, "exports");
713 GOTO(obd_cleanup, rc);
715 obd->obd_proc_exports_entry = entry;
717 entry = lprocfs_add_simple(obd->obd_proc_exports_entry, "clear",
718 obd, &lprocfs_nid_stats_clear_fops);
721 CERROR("%s: add proc entry 'clear' failed: %d.\n",
723 GOTO(obd_cleanup, rc);
726 ofd_stats_counter_init(obd->obd_stats);
728 rc = lprocfs_job_stats_init(obd, LPROC_OFD_STATS_LAST,
729 ofd_stats_counter_init);
731 GOTO(obd_cleanup, rc);
734 lprocfs_obd_cleanup(obd);
735 lprocfs_free_obd_stats(obd);
741 * Expose OSD statistics to OFD layer.
743 * The osd interfaces to the backend file system exposes useful data
744 * such as brw_stats and read or write cache states. This same data
745 * needs to be exposed into the obdfilter (ofd) layer to maintain
746 * backwards compatibility. This function creates the symlinks in the
747 * proc layer to enable this.
749 * \param[in] ofd OFD device
751 static void ofd_procfs_add_brw_stats_symlink(struct ofd_device *ofd)
753 struct obd_device *obd = ofd_obd(ofd);
754 struct obd_device *osd_obd = ofd->ofd_osd_exp->exp_obd;
756 if (obd->obd_proc_entry == NULL)
759 lprocfs_add_symlink("brw_stats", obd->obd_proc_entry,
760 "../../%s/%s/brw_stats",
761 osd_obd->obd_type->typ_name, obd->obd_name);
763 lprocfs_add_symlink("read_cache_enable", obd->obd_proc_entry,
764 "../../%s/%s/read_cache_enable",
765 osd_obd->obd_type->typ_name, obd->obd_name);
767 lprocfs_add_symlink("readcache_max_filesize",
769 "../../%s/%s/readcache_max_filesize",
770 osd_obd->obd_type->typ_name, obd->obd_name);
772 lprocfs_add_symlink("writethrough_cache_enable",
774 "../../%s/%s/writethrough_cache_enable",
775 osd_obd->obd_type->typ_name, obd->obd_name);
779 * Cleanup all procfs entries in OFD.
781 * \param[in] ofd OFD device
783 static void ofd_procfs_fini(struct ofd_device *ofd)
785 struct obd_device *obd = ofd_obd(ofd);
787 lprocfs_free_per_client_stats(obd);
788 lprocfs_obd_cleanup(obd);
789 lprocfs_free_obd_stats(obd);
790 lprocfs_job_stats_fini(obd);
794 * Stop SEQ/FID server on OFD.
796 * \param[in] env execution environment
797 * \param[in] ofd OFD device
799 * \retval 0 if successful
800 * \retval negative value on error
802 int ofd_fid_fini(const struct lu_env *env, struct ofd_device *ofd)
804 return seq_site_fini(env, &ofd->ofd_seq_site);
808 * Start SEQ/FID server on OFD.
810 * The SEQ/FID server on OFD is needed to allocate FIDs for new objects.
811 * It also connects to the master server to get own FID sequence (SEQ) range
812 * to this particular OFD. Typically that happens when the OST is first
813 * formatted or in the rare case that it exhausts the local sequence range.
815 * The sequence range is allocated out to the MDTs for OST object allocations,
816 * and not directly to the clients.
818 * \param[in] env execution environment
819 * \param[in] ofd OFD device
821 * \retval 0 if successful
822 * \retval negative value on error
824 int ofd_fid_init(const struct lu_env *env, struct ofd_device *ofd)
826 struct seq_server_site *ss = &ofd->ofd_seq_site;
827 struct lu_device *lu = &ofd->ofd_dt_dev.dd_lu_dev;
828 char *obd_name = ofd_name(ofd);
832 ss = &ofd->ofd_seq_site;
833 lu->ld_site->ld_seq_site = ss;
834 ss->ss_lu = lu->ld_site;
835 ss->ss_node_id = ofd->ofd_lut.lut_lsd.lsd_osd_index;
837 OBD_ALLOC(name, sizeof(obd_name) * 2 + 10);
841 OBD_ALLOC_PTR(ss->ss_server_seq);
842 if (ss->ss_server_seq == NULL)
843 GOTO(out_name, rc = -ENOMEM);
845 rc = seq_server_init(env, ss->ss_server_seq, ofd->ofd_osd, obd_name,
846 LUSTRE_SEQ_SERVER, ss);
848 CERROR("%s : seq server init error %d\n", obd_name, rc);
849 GOTO(out_server, rc);
851 ss->ss_server_seq->lss_space.lsr_index = ss->ss_node_id;
853 OBD_ALLOC_PTR(ss->ss_client_seq);
854 if (ss->ss_client_seq == NULL)
855 GOTO(out_server, rc = -ENOMEM);
858 * It always printed as "%p", so that the name is unique in the kernel,
859 * even if the filesystem is mounted twice. So sizeof(.) * 2 is enough.
861 snprintf(name, sizeof(obd_name) * 2 + 7, "%p-super", obd_name);
862 rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_DATA,
865 CERROR("%s : seq client init error %d\n", obd_name, rc);
866 GOTO(out_client, rc);
869 rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
873 seq_client_fini(ss->ss_client_seq);
874 OBD_FREE_PTR(ss->ss_client_seq);
875 ss->ss_client_seq = NULL;
877 seq_server_fini(ss->ss_server_seq, env);
878 OBD_FREE_PTR(ss->ss_server_seq);
879 ss->ss_server_seq = NULL;
882 OBD_FREE(name, sizeof(obd_name) * 2 + 10);
888 * OFD request handler for OST_SET_INFO RPC.
890 * This is OFD-specific part of request handling
892 * \param[in] tsi target session environment for this request
894 * \retval 0 if successful
895 * \retval negative value on error
897 static int ofd_set_info_hdl(struct tgt_session_info *tsi)
899 struct ptlrpc_request *req = tgt_ses_req(tsi);
900 struct ost_body *body = NULL, *repbody;
901 void *key, *val = NULL;
902 int keylen, vallen, rc = 0;
903 bool is_grant_shrink;
907 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
909 DEBUG_REQ(D_HA, req, "no set_info key");
910 RETURN(err_serious(-EFAULT));
912 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
915 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
917 DEBUG_REQ(D_HA, req, "no set_info val");
918 RETURN(err_serious(-EFAULT));
920 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
923 is_grant_shrink = KEY_IS(KEY_GRANT_SHRINK);
925 /* In this case the value is actually an RMF_OST_BODY, so we
926 * transmutate the type of this PTLRPC */
927 req_capsule_extend(tsi->tsi_pill, &RQF_OST_SET_GRANT_INFO);
929 rc = req_capsule_server_pack(tsi->tsi_pill);
933 if (is_grant_shrink) {
934 body = req_capsule_client_get(tsi->tsi_pill, &RMF_OST_BODY);
936 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
939 /** handle grant shrink, similar to a read request */
940 ofd_grant_prepare_read(tsi->tsi_env, tsi->tsi_exp,
942 } else if (KEY_IS(KEY_EVICT_BY_NID)) {
944 obd_export_evict_by_nid(tsi->tsi_exp->exp_obd, val);
946 } else if (KEY_IS(KEY_SPTLRPC_CONF)) {
947 rc = tgt_adapt_sptlrpc_conf(tsi->tsi_tgt, 0);
949 CERROR("%s: Unsupported key %s\n",
950 tgt_name(tsi->tsi_tgt), (char *)key);
953 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SET_INFO,
960 * Get FIEMAP (FIle Extent MAPping) for object with the given FID.
962 * This function returns a list of extents which describes how a file's
963 * blocks are laid out on the disk.
965 * \param[in] env execution environment
966 * \param[in] ofd OFD device
967 * \param[in] fid FID of object
968 * \param[in] fiemap fiemap structure to fill with data
970 * \retval 0 if \a fiemap is filled with data successfully
971 * \retval negative value on error
973 int ofd_fiemap_get(const struct lu_env *env, struct ofd_device *ofd,
974 struct lu_fid *fid, struct fiemap *fiemap)
976 struct ofd_object *fo;
979 fo = ofd_object_find(env, ofd, fid);
981 CERROR("%s: error finding object "DFID"\n",
982 ofd_name(ofd), PFID(fid));
986 ofd_read_lock(env, fo);
987 if (ofd_object_exists(fo))
988 rc = dt_fiemap_get(env, ofd_object_child(fo), fiemap);
991 ofd_read_unlock(env, fo);
992 ofd_object_put(env, fo);
996 struct locked_region {
997 struct list_head list;
998 struct lustre_handle lh;
1002 * Lock single extent and save lock handle in the list.
1004 * This is supplemental function for lock_zero_regions(). It allocates
1005 * new locked_region structure and locks it with extent lock, then adds
1006 * it to the list of all such regions.
1008 * \param[in] ns LDLM namespace
1009 * \param[in] res_id resource ID
1010 * \param[in] begin start of region
1011 * \param[in] end end of region
1012 * \param[in] locked list head of regions list
1014 * \retval 0 if successful locking
1015 * \retval negative value on error
1017 static int lock_region(struct ldlm_namespace *ns, struct ldlm_res_id *res_id,
1018 unsigned long long begin, unsigned long long end,
1019 struct list_head *locked)
1021 struct locked_region *region = NULL;
1025 LASSERT(begin <= end);
1026 OBD_ALLOC_PTR(region);
1030 rc = tgt_extent_lock(ns, res_id, begin, end, ®ion->lh,
1035 CDEBUG(D_OTHER, "ost lock [%llu,%llu], lh=%p\n", begin, end,
1037 list_add(®ion->list, locked);
1043 * Lock the sparse areas of given resource.
1045 * The locking of sparse areas will cause dirty data to be flushed back from
1046 * clients. This is used when getting the FIEMAP of an object to make sure
1047 * there is no unaccounted cached data on clients.
1049 * This function goes through \a fiemap list of extents and locks only sparse
1050 * areas between extents.
1052 * \param[in] ns LDLM namespace
1053 * \param[in] res_id resource ID
1054 * \param[in] fiemap file extents mapping on disk
1055 * \param[in] locked list head of regions list
1057 * \retval 0 if successful
1058 * \retval negative value on error
1060 static int lock_zero_regions(struct ldlm_namespace *ns,
1061 struct ldlm_res_id *res_id,
1062 struct fiemap *fiemap,
1063 struct list_head *locked)
1065 __u64 begin = fiemap->fm_start;
1068 struct fiemap_extent *fiemap_start = fiemap->fm_extents;
1072 CDEBUG(D_OTHER, "extents count %u\n", fiemap->fm_mapped_extents);
1073 for (i = 0; i < fiemap->fm_mapped_extents; i++) {
1074 if (fiemap_start[i].fe_logical > begin) {
1075 CDEBUG(D_OTHER, "ost lock [%llu,%llu]\n",
1076 begin, fiemap_start[i].fe_logical);
1077 rc = lock_region(ns, res_id, begin,
1078 fiemap_start[i].fe_logical, locked);
1083 begin = fiemap_start[i].fe_logical + fiemap_start[i].fe_length;
1086 if (begin < (fiemap->fm_start + fiemap->fm_length)) {
1087 CDEBUG(D_OTHER, "ost lock [%llu,%llu]\n",
1088 begin, fiemap->fm_start + fiemap->fm_length);
1089 rc = lock_region(ns, res_id, begin,
1090 fiemap->fm_start + fiemap->fm_length, locked);
1097 * Unlock all previously locked sparse areas for given resource.
1099 * This function goes through list of locked regions, unlocking and freeing
1102 * \param[in] ns LDLM namespace
1103 * \param[in] locked list head of regions list
1106 unlock_zero_regions(struct ldlm_namespace *ns, struct list_head *locked)
1108 struct locked_region *entry, *temp;
1110 list_for_each_entry_safe(entry, temp, locked, list) {
1111 CDEBUG(D_OTHER, "ost unlock lh=%p\n", &entry->lh);
1112 tgt_extent_unlock(&entry->lh, LCK_PR);
1113 list_del(&entry->list);
1114 OBD_FREE_PTR(entry);
1119 * OFD request handler for OST_GET_INFO RPC.
1121 * This is OFD-specific part of request handling. The OFD-specific keys are:
1122 * - KEY_LAST_ID (obsolete)
1126 * This function reads needed data from storage and fills reply with it.
1128 * Note: the KEY_LAST_ID is obsolete, replaced by KEY_LAST_FID on newer MDTs,
1129 * and is kept for compatibility.
1131 * \param[in] tsi target session environment for this request
1133 * \retval 0 if successful
1134 * \retval negative value on error
1136 static int ofd_get_info_hdl(struct tgt_session_info *tsi)
1138 struct obd_export *exp = tsi->tsi_exp;
1139 struct ofd_device *ofd = ofd_exp(exp);
1140 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1143 int replylen, rc = 0;
1147 /* this common part for get_info rpc */
1148 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
1150 DEBUG_REQ(D_HA, tgt_ses_req(tsi), "no get_info key");
1151 RETURN(err_serious(-EPROTO));
1153 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
1156 if (KEY_IS(KEY_LAST_ID)) {
1158 struct ofd_seq *oseq;
1160 req_capsule_extend(tsi->tsi_pill, &RQF_OST_GET_INFO_LAST_ID);
1161 rc = req_capsule_server_pack(tsi->tsi_pill);
1163 RETURN(err_serious(rc));
1165 last_id = req_capsule_server_get(tsi->tsi_pill, &RMF_OBD_ID);
1167 oseq = ofd_seq_load(tsi->tsi_env, ofd,
1168 (u64)exp->exp_filter_data.fed_group);
1172 *last_id = ofd_seq_last_oid(oseq);
1173 ofd_seq_put(tsi->tsi_env, oseq);
1174 } else if (KEY_IS(KEY_FIEMAP)) {
1175 struct ll_fiemap_info_key *fm_key;
1176 struct fiemap *fiemap;
1179 req_capsule_extend(tsi->tsi_pill, &RQF_OST_GET_INFO_FIEMAP);
1181 fm_key = req_capsule_client_get(tsi->tsi_pill, &RMF_FIEMAP_KEY);
1182 rc = tgt_validate_obdo(tsi, &fm_key->lfik_oa);
1184 RETURN(err_serious(rc));
1186 fid = &fm_key->lfik_oa.o_oi.oi_fid;
1188 CDEBUG(D_INODE, "get FIEMAP of object "DFID"\n", PFID(fid));
1190 replylen = fiemap_count_to_size(
1191 fm_key->lfik_fiemap.fm_extent_count);
1192 req_capsule_set_size(tsi->tsi_pill, &RMF_FIEMAP_VAL,
1193 RCL_SERVER, replylen);
1195 rc = req_capsule_server_pack(tsi->tsi_pill);
1197 RETURN(err_serious(rc));
1199 fiemap = req_capsule_server_get(tsi->tsi_pill, &RMF_FIEMAP_VAL);
1203 *fiemap = fm_key->lfik_fiemap;
1204 rc = ofd_fiemap_get(tsi->tsi_env, ofd, fid, fiemap);
1206 /* LU-3219: Lock the sparse areas to make sure dirty
1207 * flushed back from client, then call fiemap again. */
1208 if (fm_key->lfik_oa.o_valid & OBD_MD_FLFLAGS &&
1209 fm_key->lfik_oa.o_flags & OBD_FL_SRVLOCK) {
1210 struct list_head locked;
1212 INIT_LIST_HEAD(&locked);
1213 ost_fid_build_resid(fid, &fti->fti_resid);
1214 rc = lock_zero_regions(ofd->ofd_namespace,
1215 &fti->fti_resid, fiemap,
1217 if (rc == 0 && !list_empty(&locked)) {
1218 rc = ofd_fiemap_get(tsi->tsi_env, ofd, fid,
1220 unlock_zero_regions(ofd->ofd_namespace,
1224 } else if (KEY_IS(KEY_LAST_FID)) {
1225 struct ofd_device *ofd = ofd_exp(exp);
1226 struct ofd_seq *oseq;
1230 req_capsule_extend(tsi->tsi_pill, &RQF_OST_GET_INFO_LAST_FID);
1231 rc = req_capsule_server_pack(tsi->tsi_pill);
1233 RETURN(err_serious(rc));
1235 fid = req_capsule_client_get(tsi->tsi_pill, &RMF_FID);
1237 RETURN(err_serious(-EPROTO));
1239 fid_le_to_cpu(&fti->fti_ostid.oi_fid, fid);
1241 fid = req_capsule_server_get(tsi->tsi_pill, &RMF_FID);
1245 oseq = ofd_seq_load(tsi->tsi_env, ofd,
1246 ostid_seq(&fti->fti_ostid));
1248 RETURN(PTR_ERR(oseq));
1250 rc = ostid_to_fid(fid, &oseq->os_oi,
1251 ofd->ofd_lut.lut_lsd.lsd_osd_index);
1255 CDEBUG(D_HA, "%s: LAST FID is "DFID"\n", ofd_name(ofd),
1258 ofd_seq_put(tsi->tsi_env, oseq);
1260 CERROR("%s: not supported key %s\n", tgt_name(tsi->tsi_tgt),
1264 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_GET_INFO,
1271 * OFD request handler for OST_GETATTR RPC.
1273 * This is OFD-specific part of request handling. It finds the OFD object
1274 * by its FID, gets attributes from storage and packs result to the reply.
1276 * \param[in] tsi target session environment for this request
1278 * \retval 0 if successful
1279 * \retval negative value on error
1281 static int ofd_getattr_hdl(struct tgt_session_info *tsi)
1283 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1284 struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
1285 struct ost_body *repbody;
1286 struct lustre_handle lh = { 0 };
1287 struct ofd_object *fo;
1289 enum ldlm_mode lock_mode = LCK_PR;
1294 LASSERT(tsi->tsi_ost_body != NULL);
1296 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1297 if (repbody == NULL)
1300 repbody->oa.o_oi = tsi->tsi_ost_body->oa.o_oi;
1301 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1303 srvlock = tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLFLAGS &&
1304 tsi->tsi_ost_body->oa.o_flags & OBD_FL_SRVLOCK;
1307 if (unlikely(tsi->tsi_ost_body->oa.o_flags & OBD_FL_FLUSH))
1310 rc = tgt_extent_lock(tsi->tsi_tgt->lut_obd->obd_namespace,
1311 &tsi->tsi_resid, 0, OBD_OBJECT_EOF, &lh,
1317 fo = ofd_object_find_exists(tsi->tsi_env, ofd, &tsi->tsi_fid);
1319 GOTO(out, rc = PTR_ERR(fo));
1321 rc = ofd_attr_get(tsi->tsi_env, fo, &fti->fti_attr);
1325 obdo_from_la(&repbody->oa, &fti->fti_attr,
1326 OFD_VALID_FLAGS | LA_UID | LA_GID);
1327 tgt_drop_id(tsi->tsi_exp, &repbody->oa);
1329 /* Store object version in reply */
1330 curr_version = dt_version_get(tsi->tsi_env,
1331 ofd_object_child(fo));
1332 if ((__s64)curr_version != -EOPNOTSUPP) {
1333 repbody->oa.o_valid |= OBD_MD_FLDATAVERSION;
1334 repbody->oa.o_data_version = curr_version;
1338 ofd_object_put(tsi->tsi_env, fo);
1341 tgt_extent_unlock(&lh, lock_mode);
1343 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_GETATTR,
1346 repbody->oa.o_valid |= OBD_MD_FLFLAGS;
1347 repbody->oa.o_flags = OBD_FL_FLUSH;
1353 * OFD request handler for OST_SETATTR RPC.
1355 * This is OFD-specific part of request handling. It finds the OFD object
1356 * by its FID, sets attributes from request and packs result to the reply.
1358 * \param[in] tsi target session environment for this request
1360 * \retval 0 if successful
1361 * \retval negative value on error
1363 static int ofd_setattr_hdl(struct tgt_session_info *tsi)
1365 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1366 struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
1367 struct ost_body *body = tsi->tsi_ost_body;
1368 struct ost_body *repbody;
1369 struct ldlm_resource *res;
1370 struct ofd_object *fo;
1371 struct filter_fid *ff = NULL;
1376 LASSERT(body != NULL);
1378 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1379 if (repbody == NULL)
1382 repbody->oa.o_oi = body->oa.o_oi;
1383 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1385 /* This would be very bad - accidentally truncating a file when
1386 * changing the time or similar - bug 12203. */
1387 if (body->oa.o_valid & OBD_MD_FLSIZE &&
1388 body->oa.o_size != OBD_OBJECT_EOF) {
1389 static char mdsinum[48];
1391 if (body->oa.o_valid & OBD_MD_FLFID)
1392 snprintf(mdsinum, sizeof(mdsinum) - 1,
1393 "of parent "DFID, body->oa.o_parent_seq,
1394 body->oa.o_parent_oid, 0);
1398 CERROR("%s: setattr from %s is trying to truncate object "DFID
1399 " %s\n", ofd_name(ofd), obd_export_nid2str(tsi->tsi_exp),
1400 PFID(&tsi->tsi_fid), mdsinum);
1404 fo = ofd_object_find_exists(tsi->tsi_env, ofd, &tsi->tsi_fid);
1406 GOTO(out, rc = PTR_ERR(fo));
1408 la_from_obdo(&fti->fti_attr, &body->oa, body->oa.o_valid);
1409 fti->fti_attr.la_valid &= ~LA_TYPE;
1411 if (body->oa.o_valid & OBD_MD_FLFID) {
1412 ff = &fti->fti_mds_fid;
1413 ofd_prepare_fidea(ff, &body->oa);
1416 /* setting objects attributes (including owner/group) */
1417 rc = ofd_attr_set(tsi->tsi_env, fo, &fti->fti_attr, ff);
1421 obdo_from_la(&repbody->oa, &fti->fti_attr,
1422 OFD_VALID_FLAGS | LA_UID | LA_GID);
1423 tgt_drop_id(tsi->tsi_exp, &repbody->oa);
1425 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SETATTR,
1429 ofd_object_put(tsi->tsi_env, fo);
1432 /* we do not call this before to avoid lu_object_find() in
1433 * ->lvbo_update() holding another reference on the object.
1434 * otherwise concurrent destroy can make the object unavailable
1435 * for 2nd lu_object_find() waiting for the first reference
1436 * to go... deadlock! */
1437 res = ldlm_resource_get(ofd->ofd_namespace, NULL,
1438 &tsi->tsi_resid, LDLM_EXTENT, 0);
1440 ldlm_res_lvbo_update(res, NULL, 0);
1441 ldlm_resource_putref(res);
1448 * Destroy OST orphans.
1450 * This is part of OST_CREATE RPC handling. If there is flag OBD_FL_DELORPHAN
1451 * set then we must destroy possible orphaned objects.
1453 * \param[in] env execution environment
1454 * \param[in] exp OBD export
1455 * \param[in] ofd OFD device
1456 * \param[in] oa obdo structure for reply
1458 * \retval 0 if successful
1459 * \retval negative value on error
1461 static int ofd_orphans_destroy(const struct lu_env *env,
1462 struct obd_export *exp,
1463 struct ofd_device *ofd, struct obdo *oa)
1465 struct ofd_thread_info *info = ofd_info(env);
1466 struct lu_fid *fid = &info->fti_fid;
1467 struct ost_id *oi = &oa->o_oi;
1468 struct ofd_seq *oseq;
1469 u64 seq = ostid_seq(oi);
1470 u64 end_id = ostid_id(oi);
1478 oseq = ofd_seq_get(ofd, seq);
1480 CERROR("%s: Can not find seq for "DOSTID"\n",
1481 ofd_name(ofd), POSTID(oi));
1486 last = ofd_seq_last_oid(oseq);
1489 LASSERT(exp != NULL);
1490 skip_orphan = !!(exp_connect_flags(exp) & OBD_CONNECT_SKIP_ORPHAN);
1492 if (OBD_FAIL_CHECK(OBD_FAIL_OST_NODESTROY))
1495 LCONSOLE(D_INFO, "%s: deleting orphan objects from "DOSTID
1496 " to "DOSTID"\n", ofd_name(ofd), seq, end_id + 1, seq, last);
1498 while (oid > end_id) {
1499 rc = fid_set_id(fid, oid);
1500 if (unlikely(rc != 0))
1503 rc = ofd_destroy_by_fid(env, ofd, fid, 1);
1504 if (rc != 0 && rc != -ENOENT && rc != -ESTALE &&
1505 likely(rc != -EREMCHG && rc != -EINPROGRESS))
1506 /* this is pretty fatal... */
1507 CEMERG("%s: error destroying precreated id "
1509 ofd_name(ofd), PFID(fid), rc);
1513 ofd_seq_last_oid_set(oseq, oid);
1514 /* update last_id on disk periodically so that if we
1515 * restart * we don't need to re-scan all of the just
1516 * deleted objects. */
1517 if ((oid & 511) == 0)
1518 ofd_seq_last_oid_write(env, ofd, oseq);
1522 CDEBUG(D_HA, "%s: after destroy: set last_id to "DOSTID"\n",
1523 ofd_name(ofd), seq, oid);
1527 ofd_seq_last_oid_set(oseq, oid);
1528 rc = ofd_seq_last_oid_write(env, ofd, oseq);
1530 /* don't reuse orphan object, return last used objid */
1531 ostid_set_id(oi, last);
1538 ofd_seq_put(env, oseq);
1543 * OFD request handler for OST_CREATE RPC.
1545 * This is OFD-specific part of request handling. Its main purpose is to
1546 * create new data objects on OST, but it also used to destroy orphans.
1548 * \param[in] tsi target session environment for this request
1550 * \retval 0 if successful
1551 * \retval negative value on error
1553 static int ofd_create_hdl(struct tgt_session_info *tsi)
1555 struct ptlrpc_request *req = tgt_ses_req(tsi);
1556 struct ost_body *repbody;
1557 const struct obdo *oa = &tsi->tsi_ost_body->oa;
1558 struct obdo *rep_oa;
1559 struct obd_export *exp = tsi->tsi_exp;
1560 struct ofd_device *ofd = ofd_exp(exp);
1561 u64 seq = ostid_seq(&oa->o_oi);
1562 u64 oid = ostid_id(&oa->o_oi);
1563 struct ofd_seq *oseq;
1570 if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS))
1573 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1574 if (repbody == NULL)
1577 down_read(&ofd->ofd_lastid_rwsem);
1578 /* Currently, for safe, we do not distinguish which LAST_ID is broken,
1579 * we may do that in the future.
1580 * Return -ENOSPC until the LAST_ID rebuilt. */
1581 if (unlikely(ofd->ofd_lastid_rebuilding))
1582 GOTO(out_sem, rc = -ENOSPC);
1584 rep_oa = &repbody->oa;
1585 rep_oa->o_oi = oa->o_oi;
1587 LASSERT(seq >= FID_SEQ_OST_MDT0);
1588 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
1590 CDEBUG(D_INFO, "ofd_create("DOSTID")\n", POSTID(&oa->o_oi));
1592 oseq = ofd_seq_load(tsi->tsi_env, ofd, seq);
1594 CERROR("%s: Can't find FID Sequence "LPX64": rc = %ld\n",
1595 ofd_name(ofd), seq, PTR_ERR(oseq));
1596 GOTO(out_sem, rc = -EINVAL);
1599 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
1600 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
1601 if (!ofd_obd(ofd)->obd_recovering ||
1602 oid > ofd_seq_last_oid(oseq)) {
1603 CERROR("%s: recreate objid "DOSTID" > last id "LPU64
1604 "\n", ofd_name(ofd), POSTID(&oa->o_oi),
1605 ofd_seq_last_oid(oseq));
1606 GOTO(out_nolock, rc = -EINVAL);
1608 /* Do nothing here, we re-create objects during recovery
1609 * upon write replay, see ofd_preprw_write() */
1610 GOTO(out_nolock, rc = 0);
1612 /* former ofd_handle_precreate */
1613 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
1614 (oa->o_flags & OBD_FL_DELORPHAN)) {
1615 exp->exp_filter_data.fed_lastid_gen = ofd->ofd_lastid_gen;
1617 /* destroy orphans */
1618 if (lustre_msg_get_conn_cnt(tgt_ses_req(tsi)->rq_reqmsg) <
1619 exp->exp_conn_cnt) {
1620 CERROR("%s: dropping old orphan cleanup request\n",
1622 GOTO(out_nolock, rc = 0);
1624 /* This causes inflight precreates to abort and drop lock */
1625 oseq->os_destroys_in_progress = 1;
1626 mutex_lock(&oseq->os_create_lock);
1627 if (!oseq->os_destroys_in_progress) {
1628 CERROR("%s:["LPU64"] destroys_in_progress already"
1629 " cleared\n", ofd_name(ofd), seq);
1630 ostid_set_id(&rep_oa->o_oi, ofd_seq_last_oid(oseq));
1633 diff = oid - ofd_seq_last_oid(oseq);
1634 CDEBUG(D_HA, "ofd_last_id() = "LPU64" -> diff = %d\n",
1635 ofd_seq_last_oid(oseq), diff);
1636 if (-diff > OST_MAX_PRECREATE) {
1637 /* Let MDS know that we are so far ahead. */
1638 ostid_set_id(&rep_oa->o_oi, ofd_seq_last_oid(oseq) + 1);
1640 } else if (diff < 0) {
1641 rc = ofd_orphans_destroy(tsi->tsi_env, exp,
1643 oseq->os_destroys_in_progress = 0;
1645 /* XXX: Used by MDS for the first time! */
1646 oseq->os_destroys_in_progress = 0;
1649 if (unlikely(exp->exp_filter_data.fed_lastid_gen !=
1650 ofd->ofd_lastid_gen)) {
1651 /* Keep the export ref so we can send the reply. */
1652 ofd_obd_disconnect(class_export_get(exp));
1653 GOTO(out_nolock, rc = -ENOTCONN);
1656 mutex_lock(&oseq->os_create_lock);
1657 if (lustre_msg_get_conn_cnt(tgt_ses_req(tsi)->rq_reqmsg) <
1658 exp->exp_conn_cnt) {
1659 CERROR("%s: dropping old precreate request\n",
1663 /* only precreate if seq is 0, IDIF or normal and also o_id
1664 * must be specfied */
1665 if ((!fid_seq_is_mdt(seq) && !fid_seq_is_norm(seq) &&
1666 !fid_seq_is_idif(seq)) || oid == 0) {
1667 diff = 1; /* shouldn't we create this right now? */
1669 diff = oid - ofd_seq_last_oid(oseq);
1670 /* Do sync create if the seq is about to used up */
1671 if (fid_seq_is_idif(seq) || fid_seq_is_mdt0(seq)) {
1672 if (unlikely(oid >= IDIF_MAX_OID - 1))
1674 } else if (fid_seq_is_norm(seq)) {
1676 LUSTRE_DATA_SEQ_MAX_WIDTH - 1))
1679 CERROR("%s : invalid o_seq "DOSTID"\n",
1680 ofd_name(ofd), POSTID(&oa->o_oi));
1681 GOTO(out, rc = -EINVAL);
1686 CERROR("%s: invalid precreate request for "
1687 DOSTID", last_id " LPU64 ". "
1688 "Likely MDS last_id corruption\n",
1689 ofd_name(ofd), POSTID(&oa->o_oi),
1690 ofd_seq_last_oid(oseq));
1691 GOTO(out, rc = -EINVAL);
1696 cfs_time_t enough_time = cfs_time_shift(DISK_TIMEOUT);
1701 if (!(oa->o_valid & OBD_MD_FLFLAGS) ||
1702 !(oa->o_flags & OBD_FL_DELORPHAN)) {
1703 /* don't enforce grant during orphan recovery */
1704 granted = ofd_grant_create(tsi->tsi_env,
1705 ofd_obd(ofd)->obd_self_export,
1710 CDEBUG(D_HA, "%s: failed to acquire grant "
1711 "space for precreate (%d): rc = %d\n",
1712 ofd_name(ofd), diff, rc);
1717 /* This can happen if a new OST is formatted and installed
1718 * in place of an old one at the same index. Instead of
1719 * precreating potentially millions of deleted old objects
1720 * (possibly filling the OST), only precreate the last batch.
1721 * LFSCK will eventually clean up any orphans. LU-14 */
1722 if (diff > 5 * OST_MAX_PRECREATE) {
1723 diff = OST_MAX_PRECREATE / 2;
1724 LCONSOLE_WARN("%s: Too many FIDs to precreate "
1725 "OST replaced or reformatted: "
1726 "LFSCK will clean up",
1729 CDEBUG(D_HA, "%s: precreate FID "DOSTID" is over "
1730 "%u larger than the LAST_ID "DOSTID", only "
1731 "precreating the last %u objects.\n",
1732 ofd_name(ofd), POSTID(&oa->o_oi),
1733 5 * OST_MAX_PRECREATE,
1734 POSTID(&oseq->os_oi), diff);
1735 ofd_seq_last_oid_set(oseq, ostid_id(&oa->o_oi) - diff);
1739 next_id = ofd_seq_last_oid(oseq) + 1;
1740 count = ofd_precreate_batch(ofd, diff);
1742 CDEBUG(D_HA, "%s: reserve %d objects in group "LPX64
1743 " at "LPU64"\n", ofd_name(ofd),
1744 count, seq, next_id);
1746 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
1747 && cfs_time_after(jiffies, enough_time)) {
1748 CDEBUG(D_HA, "%s: Slow creates, %d/%d objects"
1749 " created at a rate of %d/s\n",
1750 ofd_name(ofd), created, diff + created,
1751 created / DISK_TIMEOUT);
1755 rc = ofd_precreate_objects(tsi->tsi_env, ofd, next_id,
1756 oseq, count, sync_trans);
1760 } else if (rc < 0) {
1766 lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
1767 LCONSOLE_WARN("%s: can't create the same count of"
1768 " objects when replaying the request"
1769 " (diff is %d). see LU-4621\n",
1770 ofd_name(ofd), diff);
1773 /* some objects got created, we can return
1774 * them, even if last creation failed */
1777 CERROR("%s: unable to precreate: rc = %d\n",
1780 if (!(oa->o_valid & OBD_MD_FLFLAGS) ||
1781 !(oa->o_flags & OBD_FL_DELORPHAN)) {
1782 ofd_grant_commit(ofd_obd(ofd)->obd_self_export, granted,
1787 ostid_set_id(&rep_oa->o_oi, ofd_seq_last_oid(oseq));
1790 ofd_counter_incr(exp, LPROC_OFD_STATS_CREATE,
1793 mutex_unlock(&oseq->os_create_lock);
1796 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 8, 53, 0)
1797 struct ofd_thread_info *info = ofd_info(tsi->tsi_env);
1798 struct lu_fid *fid = &info->fti_fid;
1800 /* For compatible purpose, it needs to convert back to
1801 * OST ID before put it on wire. */
1802 *fid = rep_oa->o_oi.oi_fid;
1803 fid_to_ostid(fid, &rep_oa->o_oi);
1805 rep_oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP;
1807 ofd_seq_put(tsi->tsi_env, oseq);
1810 up_read(&ofd->ofd_lastid_rwsem);
1815 * OFD request handler for OST_DESTROY RPC.
1817 * This is OFD-specific part of request handling. It destroys data objects
1818 * related to destroyed object on MDT.
1820 * \param[in] tsi target session environment for this request
1822 * \retval 0 if successful
1823 * \retval negative value on error
1825 static int ofd_destroy_hdl(struct tgt_session_info *tsi)
1827 const struct ost_body *body = tsi->tsi_ost_body;
1828 struct ost_body *repbody;
1829 struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
1830 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1831 struct lu_fid *fid = &fti->fti_fid;
1838 if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS))
1841 /* This is old case for clients before Lustre 2.4 */
1842 /* If there's a DLM request, cancel the locks mentioned in it */
1843 if (req_capsule_field_present(tsi->tsi_pill, &RMF_DLM_REQ,
1845 struct ldlm_request *dlm;
1847 dlm = req_capsule_client_get(tsi->tsi_pill, &RMF_DLM_REQ);
1850 ldlm_request_cancel(tgt_ses_req(tsi), dlm, 0, LATF_SKIP);
1853 *fid = body->oa.o_oi.oi_fid;
1854 oid = ostid_id(&body->oa.o_oi);
1857 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1859 /* check that o_misc makes sense */
1860 if (body->oa.o_valid & OBD_MD_FLOBJCOUNT)
1861 count = body->oa.o_misc;
1863 count = 1; /* default case - single destroy */
1865 CDEBUG(D_HA, "%s: Destroy object "DOSTID" count %d\n", ofd_name(ofd),
1866 POSTID(&body->oa.o_oi), count);
1871 lrc = ofd_destroy_by_fid(tsi->tsi_env, ofd, fid, 0);
1872 if (lrc == -ENOENT) {
1874 "%s: destroying non-existent object "DFID"\n",
1875 ofd_name(ofd), PFID(fid));
1876 /* rewrite rc with -ENOENT only if it is 0 */
1879 } else if (lrc != 0) {
1880 CERROR("%s: error destroying object "DFID": %d\n",
1881 ofd_name(ofd), PFID(fid), lrc);
1887 lrc = fid_set_id(fid, oid);
1888 if (unlikely(lrc != 0 && count > 0))
1889 GOTO(out, rc = lrc);
1892 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_DESTROY,
1898 fid_to_ostid(fid, &repbody->oa.o_oi);
1903 * OFD request handler for OST_STATFS RPC.
1905 * This function gets statfs data from storage as part of request
1908 * \param[in] tsi target session environment for this request
1910 * \retval 0 if successful
1911 * \retval negative value on error
1913 static int ofd_statfs_hdl(struct tgt_session_info *tsi)
1915 struct obd_statfs *osfs;
1920 osfs = req_capsule_server_get(tsi->tsi_pill, &RMF_OBD_STATFS);
1922 rc = ofd_statfs(tsi->tsi_env, tsi->tsi_exp, osfs,
1923 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS), 0);
1925 CERROR("%s: statfs failed: rc = %d\n",
1926 tgt_name(tsi->tsi_tgt), rc);
1928 if (OBD_FAIL_CHECK(OBD_FAIL_OST_STATFS_EINPROGRESS))
1931 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_STATFS,
1938 * OFD request handler for OST_SYNC RPC.
1940 * Sync object data or all filesystem data to the disk and pack the
1943 * \param[in] tsi target session environment for this request
1945 * \retval 0 if successful
1946 * \retval negative value on error
1948 static int ofd_sync_hdl(struct tgt_session_info *tsi)
1950 struct ost_body *body = tsi->tsi_ost_body;
1951 struct ost_body *repbody;
1952 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1953 struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
1954 struct ofd_object *fo = NULL;
1959 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1961 /* if no objid is specified, it means "sync whole filesystem" */
1962 if (!fid_is_zero(&tsi->tsi_fid)) {
1963 fo = ofd_object_find_exists(tsi->tsi_env, ofd, &tsi->tsi_fid);
1965 RETURN(PTR_ERR(fo));
1968 rc = tgt_sync(tsi->tsi_env, tsi->tsi_tgt,
1969 fo != NULL ? ofd_object_child(fo) : NULL,
1970 repbody->oa.o_size, repbody->oa.o_blocks);
1974 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SYNC,
1979 repbody->oa.o_oi = body->oa.o_oi;
1980 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1982 rc = ofd_attr_get(tsi->tsi_env, fo, &fti->fti_attr);
1984 obdo_from_la(&repbody->oa, &fti->fti_attr,
1987 /* don't return rc from getattr */
1992 ofd_object_put(tsi->tsi_env, fo);
1997 * OFD request handler for OST_PUNCH RPC.
1999 * This is part of request processing. Validate request fields,
2000 * punch (truncate) the given OFD object and pack reply.
2002 * \param[in] tsi target session environment for this request
2004 * \retval 0 if successful
2005 * \retval negative value on error
2007 static int ofd_punch_hdl(struct tgt_session_info *tsi)
2009 const struct obdo *oa = &tsi->tsi_ost_body->oa;
2010 struct ost_body *repbody;
2011 struct ofd_thread_info *info = tsi2ofd_info(tsi);
2012 struct ldlm_namespace *ns = tsi->tsi_tgt->lut_obd->obd_namespace;
2013 struct ldlm_resource *res;
2014 struct ofd_object *fo;
2015 struct filter_fid *ff = NULL;
2017 struct lustre_handle lh = { 0, };
2024 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_PAUSE_PUNCH, cfs_fail_val);
2026 /* check that we do support OBD_CONNECT_TRUNCLOCK. */
2027 CLASSERT(OST_CONNECT_SUPPORTED & OBD_CONNECT_TRUNCLOCK);
2029 if ((oa->o_valid & (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS)) !=
2030 (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS))
2031 RETURN(err_serious(-EPROTO));
2033 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
2034 if (repbody == NULL)
2035 RETURN(err_serious(-ENOMEM));
2037 /* punch start,end are passed in o_size,o_blocks throught wire */
2041 if (end != OBD_OBJECT_EOF) /* Only truncate is supported */
2044 /* standard truncate optimization: if file body is completely
2045 * destroyed, don't send data back to the server. */
2047 flags |= LDLM_FL_AST_DISCARD_DATA;
2049 repbody->oa.o_oi = oa->o_oi;
2050 repbody->oa.o_valid = OBD_MD_FLID;
2052 srvlock = oa->o_valid & OBD_MD_FLFLAGS &&
2053 oa->o_flags & OBD_FL_SRVLOCK;
2056 rc = tgt_extent_lock(ns, &tsi->tsi_resid, start, end, &lh,
2062 CDEBUG(D_INODE, "calling punch for object "DFID", valid = "LPX64
2063 ", start = "LPD64", end = "LPD64"\n", PFID(&tsi->tsi_fid),
2064 oa->o_valid, start, end);
2066 fo = ofd_object_find_exists(tsi->tsi_env, ofd_exp(tsi->tsi_exp),
2069 GOTO(out, rc = PTR_ERR(fo));
2071 la_from_obdo(&info->fti_attr, oa,
2072 OBD_MD_FLMTIME | OBD_MD_FLATIME | OBD_MD_FLCTIME);
2073 info->fti_attr.la_size = start;
2074 info->fti_attr.la_valid |= LA_SIZE;
2076 if (oa->o_valid & OBD_MD_FLFID) {
2077 ff = &info->fti_mds_fid;
2078 ofd_prepare_fidea(ff, oa);
2081 rc = ofd_object_punch(tsi->tsi_env, fo, start, end, &info->fti_attr,
2082 ff, (struct obdo *)oa);
2086 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_PUNCH,
2090 ofd_object_put(tsi->tsi_env, fo);
2093 tgt_extent_unlock(&lh, LCK_PW);
2095 /* we do not call this before to avoid lu_object_find() in
2096 * ->lvbo_update() holding another reference on the object.
2097 * otherwise concurrent destroy can make the object unavailable
2098 * for 2nd lu_object_find() waiting for the first reference
2099 * to go... deadlock! */
2100 res = ldlm_resource_get(ns, NULL, &tsi->tsi_resid,
2103 ldlm_res_lvbo_update(res, NULL, 0);
2104 ldlm_resource_putref(res);
2111 * OFD request handler for OST_LADVISE RPC.
2113 * Tune cache or perfetch policies according to advices.
2115 * \param[in] tsi target session environment for this request
2117 * \retval 0 if successful
2118 * \retval negative errno on error
2120 static int ofd_ladvise_hdl(struct tgt_session_info *tsi)
2122 struct ptlrpc_request *req = tgt_ses_req(tsi);
2123 struct obd_export *exp = tsi->tsi_exp;
2124 struct ofd_device *ofd = ofd_exp(exp);
2125 struct ost_body *body, *repbody;
2126 struct ofd_thread_info *info;
2127 struct ofd_object *fo;
2128 const struct lu_env *env = req->rq_svc_thread->t_env;
2130 struct lu_ladvise *ladvise;
2132 struct ladvise_hdr *ladvise_hdr;
2136 body = tsi->tsi_ost_body;
2138 if ((body->oa.o_valid & OBD_MD_FLID) != OBD_MD_FLID)
2139 RETURN(err_serious(-EPROTO));
2141 ladvise_hdr = req_capsule_client_get(tsi->tsi_pill,
2142 &RMF_OST_LADVISE_HDR);
2143 if (ladvise_hdr == NULL)
2144 RETURN(err_serious(-EPROTO));
2146 if (ladvise_hdr->lah_magic != LADVISE_MAGIC ||
2147 ladvise_hdr->lah_count < 1)
2148 RETURN(err_serious(-EPROTO));
2150 if ((ladvise_hdr->lah_flags & (~LF_MASK)) != 0)
2151 RETURN(err_serious(-EPROTO));
2153 ladvise = req_capsule_client_get(tsi->tsi_pill, &RMF_OST_LADVISE);
2154 if (ladvise == NULL)
2155 RETURN(err_serious(-EPROTO));
2157 num_advise = req_capsule_get_size(&req->rq_pill,
2158 &RMF_OST_LADVISE, RCL_CLIENT) /
2160 if (num_advise < ladvise_hdr->lah_count)
2161 RETURN(err_serious(-EPROTO));
2163 repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
2164 repbody->oa = body->oa;
2166 info = ofd_info_init(env, exp);
2168 rc = ostid_to_fid(&info->fti_fid, &body->oa.o_oi,
2169 ofd->ofd_lut.lut_lsd.lsd_osd_index);
2173 fo = ofd_object_find(env, ofd, &info->fti_fid);
2178 LASSERT(fo != NULL);
2180 for (i = 0; i < num_advise; i++, ladvise++) {
2181 if (ladvise->lla_end <= ladvise->lla_start) {
2182 rc = err_serious(-EPROTO);
2186 /* Handle different advice types */
2187 switch (ladvise->lla_advice) {
2196 ofd_object_put(env, fo);
2197 req->rq_status = rc;
2202 * OFD request handler for OST_QUOTACTL RPC.
2204 * This is part of request processing to validate incoming request fields,
2205 * get the requested data from OSD and pack reply.
2207 * \param[in] tsi target session environment for this request
2209 * \retval 0 if successful
2210 * \retval negative value on error
2212 static int ofd_quotactl(struct tgt_session_info *tsi)
2214 struct obd_quotactl *oqctl, *repoqc;
2215 struct lu_nodemap *nodemap;
2221 oqctl = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_QUOTACTL);
2223 RETURN(err_serious(-EPROTO));
2225 repoqc = req_capsule_server_get(tsi->tsi_pill, &RMF_OBD_QUOTACTL);
2227 RETURN(err_serious(-ENOMEM));
2231 nodemap = nodemap_get_from_exp(tsi->tsi_exp);
2232 if (IS_ERR(nodemap))
2233 RETURN(PTR_ERR(nodemap));
2236 if (oqctl->qc_type == USRQUOTA)
2237 id = nodemap_map_id(nodemap, NODEMAP_UID,
2238 NODEMAP_CLIENT_TO_FS,
2240 else if (oqctl->qc_type == GRPQUOTA)
2241 id = nodemap_map_id(nodemap, NODEMAP_GID,
2242 NODEMAP_CLIENT_TO_FS,
2245 nodemap_putref(nodemap);
2247 if (repoqc->qc_id != id)
2248 swap(repoqc->qc_id, id);
2250 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom, repoqc);
2252 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_QUOTACTL,
2255 if (repoqc->qc_id != id)
2256 swap(repoqc->qc_id, id);
2262 * Calculate the amount of time for lock prolongation.
2264 * This is helper for ofd_prolong_extent_locks() function to get
2265 * the timeout extra time.
2267 * \param[in] req current request
2269 * \retval amount of time to extend the timeout with
2271 static inline int prolong_timeout(struct ptlrpc_request *req,
2272 struct ldlm_lock *lock)
2274 struct ptlrpc_service_part *svcpt = req->rq_rqbd->rqbd_svcpt;
2277 return obd_timeout / 2;
2279 /* We are in the middle of the process - BL AST is sent, CANCEL
2280 is ahead. Take half of AT + IO process time. */
2281 return at_est2timeout(at_get(&svcpt->scp_at_estimate)) +
2282 (ldlm_bl_timeout(lock) >> 1);
2286 * Prolong single lock timeout.
2288 * This is supplemental function to the ofd_prolong_locks(). It prolongs
2291 * \param[in] tsi target session environment for this request
2292 * \param[in] lock LDLM lock to prolong
2293 * \param[in] extent related extent
2294 * \param[in] timeout timeout value to add
2296 * \retval 0 if lock is not suitable for prolongation
2297 * \retval 1 if lock was prolonged successfully
2299 static int ofd_prolong_one_lock(struct tgt_session_info *tsi,
2300 struct ldlm_lock *lock,
2301 struct ldlm_extent *extent)
2303 int timeout = prolong_timeout(tgt_ses_req(tsi), lock);
2305 if (lock->l_flags & LDLM_FL_DESTROYED) /* lock already cancelled */
2308 /* XXX: never try to grab resource lock here because we're inside
2309 * exp_bl_list_lock; in ldlm_lockd.c to handle waiting list we take
2310 * res lock and then exp_bl_list_lock. */
2312 if (!(lock->l_flags & LDLM_FL_AST_SENT))
2313 /* ignore locks not being cancelled */
2316 LDLM_DEBUG(lock, "refreshed for req x"LPU64" ext("LPU64"->"LPU64") "
2317 "to %ds.\n", tgt_ses_req(tsi)->rq_xid, extent->start,
2318 extent->end, timeout);
2320 /* OK. this is a possible lock the user holds doing I/O
2321 * let's refresh eviction timer for it */
2322 ldlm_refresh_waiting_lock(lock, timeout);
2327 * Prolong lock timeout for the given extent.
2329 * This function finds all locks related with incoming request and
2330 * prolongs their timeout.
2332 * If a client is holding a lock for a long time while it sends
2333 * read or write RPCs to the OST for the object under this lock,
2334 * then we don't want the OST to evict the client. Otherwise,
2335 * if the network or disk is very busy then the client may not
2336 * be able to make any progress to clear out dirty pages under
2337 * the lock and the application will fail.
2339 * Every time a Bulk Read/Write (BRW) request arrives for the object
2340 * covered by the lock, extend the timeout on that lock. The RPC should
2341 * contain a lock handle for the lock it is using, but this
2342 * isn't handled correctly by all client versions, and the
2343 * request may cover multiple locks.
2345 * \param[in] tsi target session environment for this request
2346 * \param[in] start start of extent
2347 * \param[in] end end of extent
2349 * \retval number of prolonged locks
2351 static int ofd_prolong_extent_locks(struct tgt_session_info *tsi,
2352 __u64 start, __u64 end)
2354 struct obd_export *exp = tsi->tsi_exp;
2355 struct obdo *oa = &tsi->tsi_ost_body->oa;
2356 struct ldlm_extent extent = {
2360 struct ldlm_lock *lock;
2365 if (oa->o_valid & OBD_MD_FLHANDLE) {
2366 /* mostly a request should be covered by only one lock, try
2368 lock = ldlm_handle2lock(&oa->o_handle);
2370 /* Fast path to check if the lock covers the whole IO
2371 * region exclusively. */
2372 if (lock->l_granted_mode == LCK_PW &&
2373 ldlm_extent_contain(&lock->l_policy_data.l_extent,
2376 LASSERT(lock->l_export == exp);
2377 lock_count = ofd_prolong_one_lock(tsi, lock,
2379 LDLM_LOCK_PUT(lock);
2382 lock->l_last_used = cfs_time_current();
2383 LDLM_LOCK_PUT(lock);
2387 spin_lock_bh(&exp->exp_bl_list_lock);
2388 list_for_each_entry(lock, &exp->exp_bl_list, l_exp_list) {
2389 LASSERT(lock->l_flags & LDLM_FL_AST_SENT);
2390 LASSERT(lock->l_resource->lr_type == LDLM_EXTENT);
2392 /* ignore waiting locks, no more granted locks in the list */
2393 if (lock->l_granted_mode != lock->l_req_mode)
2396 if (!ldlm_res_eq(&tsi->tsi_resid, &lock->l_resource->lr_name))
2399 if (!ldlm_extent_overlap(&lock->l_policy_data.l_extent,
2403 lock_count += ofd_prolong_one_lock(tsi, lock, &extent);
2405 spin_unlock_bh(&exp->exp_bl_list_lock);
2411 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_match for OFD RW requests.
2413 * Determine if \a lock and the lock from request \a req are equivalent
2414 * by comparing their resource names, modes, and extents.
2416 * It is used to give priority to read and write RPCs being done
2417 * under this lock so that the client can drop the contended
2418 * lock more quickly and let other clients use it. This improves
2419 * overall performance in the case where the first client gets a
2420 * very large lock extent that prevents other clients from
2421 * submitting their writes.
2423 * \param[in] req ptlrpc_request being processed
2424 * \param[in] lock contended lock to match
2426 * \retval 1 if lock is matched
2427 * \retval 0 otherwise
2429 static int ofd_rw_hpreq_lock_match(struct ptlrpc_request *req,
2430 struct ldlm_lock *lock)
2432 struct niobuf_remote *rnb;
2433 struct obd_ioobj *ioo;
2434 enum ldlm_mode mode;
2435 struct ldlm_extent ext;
2436 __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
2440 ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
2441 LASSERT(ioo != NULL);
2443 rnb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
2444 LASSERT(rnb != NULL);
2446 ext.start = rnb->rnb_offset;
2447 rnb += ioo->ioo_bufcnt - 1;
2448 ext.end = rnb->rnb_offset + rnb->rnb_len - 1;
2450 LASSERT(lock->l_resource != NULL);
2451 if (!ostid_res_name_eq(&ioo->ioo_oid, &lock->l_resource->lr_name))
2454 /* a bulk write can only hold a reference on a PW extent lock */
2456 if (opc == OST_READ)
2457 /* whereas a bulk read can be protected by either a PR or PW
2461 if (!(lock->l_granted_mode & mode))
2464 RETURN(ldlm_extent_overlap(&lock->l_policy_data.l_extent, &ext));
2468 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_check for OFD RW requests.
2470 * Check for whether the given PTLRPC request (\a req) is blocking
2471 * an LDLM lock cancel.
2473 * \param[in] req the incoming request
2475 * \retval 1 if \a req is blocking an LDLM lock cancel
2476 * \retval 0 if it is not
2478 static int ofd_rw_hpreq_check(struct ptlrpc_request *req)
2480 struct tgt_session_info *tsi;
2481 struct obd_ioobj *ioo;
2482 struct niobuf_remote *rnb;
2488 /* Don't use tgt_ses_info() to get session info, because lock_match()
2489 * can be called while request has no processing thread yet. */
2490 tsi = lu_context_key_get(&req->rq_session, &tgt_session_key);
2493 * Use LASSERT below because malformed RPCs should have
2494 * been filtered out in tgt_hpreq_handler().
2496 ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
2497 LASSERT(ioo != NULL);
2499 rnb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
2500 LASSERT(rnb != NULL);
2501 LASSERT(!(rnb->rnb_flags & OBD_BRW_SRVLOCK));
2503 start = rnb->rnb_offset;
2504 rnb += ioo->ioo_bufcnt - 1;
2505 end = rnb->rnb_offset + rnb->rnb_len - 1;
2507 DEBUG_REQ(D_RPCTRACE, req, "%s %s: refresh rw locks: "DFID
2508 " ("LPU64"->"LPU64")\n",
2509 tgt_name(tsi->tsi_tgt), current->comm,
2510 PFID(&tsi->tsi_fid), start, end);
2512 lock_count = ofd_prolong_extent_locks(tsi, start, end);
2514 CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p.\n",
2515 tgt_name(tsi->tsi_tgt), lock_count, req);
2517 RETURN(lock_count > 0);
2521 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_fini for OFD RW requests.
2523 * Called after the request has been handled. It refreshes lock timeout again
2524 * so that client has more time to send lock cancel RPC.
2526 * \param[in] req request which is being processed.
2528 static void ofd_rw_hpreq_fini(struct ptlrpc_request *req)
2530 ofd_rw_hpreq_check(req);
2534 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_match for OST_PUNCH request.
2536 * This function checks if the given lock is the same by its resname, mode
2537 * and extent as one taken from the request.
2538 * It is used to give priority to punch/truncate RPCs that might lead to
2539 * the fastest release of that lock when a lock is contended.
2541 * \param[in] req ptlrpc_request being processed
2542 * \param[in] lock contended lock to match
2544 * \retval 1 if lock is matched
2545 * \retval 0 otherwise
2547 static int ofd_punch_hpreq_lock_match(struct ptlrpc_request *req,
2548 struct ldlm_lock *lock)
2550 struct tgt_session_info *tsi;
2552 struct ldlm_extent ext;
2556 /* Don't use tgt_ses_info() to get session info, because lock_match()
2557 * can be called while request has no processing thread yet. */
2558 tsi = lu_context_key_get(&req->rq_session, &tgt_session_key);
2561 * Use LASSERT below because malformed RPCs should have
2562 * been filtered out in tgt_hpreq_handler().
2564 LASSERT(tsi->tsi_ost_body != NULL);
2565 if (tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLHANDLE &&
2566 tsi->tsi_ost_body->oa.o_handle.cookie == lock->l_handle.h_cookie)
2569 oa = &tsi->tsi_ost_body->oa;
2570 ext.start = oa->o_size;
2571 ext.end = oa->o_blocks;
2573 LASSERT(lock->l_resource != NULL);
2574 if (!ostid_res_name_eq(&oa->o_oi, &lock->l_resource->lr_name))
2577 if (!(lock->l_granted_mode & (LCK_PW | LCK_GROUP)))
2580 RETURN(ldlm_extent_overlap(&lock->l_policy_data.l_extent, &ext));
2584 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_check for OST_PUNCH request.
2586 * High-priority queue request check for whether the given punch request
2587 * (\a req) is blocking an LDLM lock cancel.
2589 * \param[in] req the incoming request
2591 * \retval 1 if \a req is blocking an LDLM lock cancel
2592 * \retval 0 if it is not
2594 static int ofd_punch_hpreq_check(struct ptlrpc_request *req)
2596 struct tgt_session_info *tsi;
2602 /* Don't use tgt_ses_info() to get session info, because lock_match()
2603 * can be called while request has no processing thread yet. */
2604 tsi = lu_context_key_get(&req->rq_session, &tgt_session_key);
2605 LASSERT(tsi != NULL);
2606 oa = &tsi->tsi_ost_body->oa;
2608 LASSERT(!(oa->o_valid & OBD_MD_FLFLAGS &&
2609 oa->o_flags & OBD_FL_SRVLOCK));
2612 "%s: refresh locks: "LPU64"/"LPU64" ("LPU64"->"LPU64")\n",
2613 tgt_name(tsi->tsi_tgt), tsi->tsi_resid.name[0],
2614 tsi->tsi_resid.name[1], oa->o_size, oa->o_blocks);
2616 lock_count = ofd_prolong_extent_locks(tsi, oa->o_size, oa->o_blocks);
2618 CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p.\n",
2619 tgt_name(tsi->tsi_tgt), lock_count, req);
2621 RETURN(lock_count > 0);
2625 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_fini for OST_PUNCH request.
2627 * Called after the request has been handled. It refreshes lock timeout again
2628 * so that client has more time to send lock cancel RPC.
2630 * \param[in] req request which is being processed.
2632 static void ofd_punch_hpreq_fini(struct ptlrpc_request *req)
2634 ofd_punch_hpreq_check(req);
2637 static struct ptlrpc_hpreq_ops ofd_hpreq_rw = {
2638 .hpreq_lock_match = ofd_rw_hpreq_lock_match,
2639 .hpreq_check = ofd_rw_hpreq_check,
2640 .hpreq_fini = ofd_rw_hpreq_fini
2643 static struct ptlrpc_hpreq_ops ofd_hpreq_punch = {
2644 .hpreq_lock_match = ofd_punch_hpreq_lock_match,
2645 .hpreq_check = ofd_punch_hpreq_check,
2646 .hpreq_fini = ofd_punch_hpreq_fini
2650 * Assign high priority operations to an IO request.
2652 * Check if the incoming request is a candidate for
2653 * high-priority processing. If it is, assign it a high
2654 * priority operations table.
2656 * \param[in] tsi target session environment for this request
2658 static void ofd_hp_brw(struct tgt_session_info *tsi)
2660 struct niobuf_remote *rnb;
2661 struct obd_ioobj *ioo;
2665 ioo = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_IOOBJ);
2666 LASSERT(ioo != NULL); /* must exist after request preprocessing */
2667 if (ioo->ioo_bufcnt > 0) {
2668 rnb = req_capsule_client_get(tsi->tsi_pill, &RMF_NIOBUF_REMOTE);
2669 LASSERT(rnb != NULL); /* must exist after request preprocessing */
2671 /* no high priority if server lock is needed */
2672 if (rnb->rnb_flags & OBD_BRW_SRVLOCK)
2675 tgt_ses_req(tsi)->rq_ops = &ofd_hpreq_rw;
2679 * Assign high priority operations to an punch request.
2681 * Check if the incoming request is a candidate for
2682 * high-priority processing. If it is, assign it a high
2683 * priority operations table.
2685 * \param[in] tsi target session environment for this request
2687 static void ofd_hp_punch(struct tgt_session_info *tsi)
2689 LASSERT(tsi->tsi_ost_body != NULL); /* must exists if we are here */
2690 /* no high-priority if server lock is needed */
2691 if (tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLFLAGS &&
2692 tsi->tsi_ost_body->oa.o_flags & OBD_FL_SRVLOCK)
2694 tgt_ses_req(tsi)->rq_ops = &ofd_hpreq_punch;
2697 #define OBD_FAIL_OST_READ_NET OBD_FAIL_OST_BRW_NET
2698 #define OBD_FAIL_OST_WRITE_NET OBD_FAIL_OST_BRW_NET
2699 #define OST_BRW_READ OST_READ
2700 #define OST_BRW_WRITE OST_WRITE
2703 * Table of OFD-specific request handlers
2705 * This table contains all opcodes accepted by OFD and
2706 * specifies handlers for them. The tgt_request_handler()
2707 * uses such table from each target to process incoming
2710 static struct tgt_handler ofd_tgt_handlers[] = {
2711 TGT_RPC_HANDLER(OST_FIRST_OPC,
2712 0, OST_CONNECT, tgt_connect,
2713 &RQF_CONNECT, LUSTRE_OBD_VERSION),
2714 TGT_RPC_HANDLER(OST_FIRST_OPC,
2715 0, OST_DISCONNECT, tgt_disconnect,
2716 &RQF_OST_DISCONNECT, LUSTRE_OBD_VERSION),
2717 TGT_RPC_HANDLER(OST_FIRST_OPC,
2718 0, OST_SET_INFO, ofd_set_info_hdl,
2719 &RQF_OBD_SET_INFO, LUSTRE_OST_VERSION),
2720 TGT_OST_HDL(0, OST_GET_INFO, ofd_get_info_hdl),
2721 TGT_OST_HDL(HABEO_CORPUS| HABEO_REFERO, OST_GETATTR, ofd_getattr_hdl),
2722 TGT_OST_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR,
2723 OST_SETATTR, ofd_setattr_hdl),
2724 TGT_OST_HDL(0 | HABEO_REFERO | MUTABOR,
2725 OST_CREATE, ofd_create_hdl),
2726 TGT_OST_HDL(0 | HABEO_REFERO | MUTABOR,
2727 OST_DESTROY, ofd_destroy_hdl),
2728 TGT_OST_HDL(0 | HABEO_REFERO, OST_STATFS, ofd_statfs_hdl),
2729 TGT_OST_HDL_HP(HABEO_CORPUS| HABEO_REFERO,
2730 OST_BRW_READ, tgt_brw_read,
2732 /* don't set CORPUS flag for brw_write because -ENOENT may be valid case */
2733 TGT_OST_HDL_HP(HABEO_CORPUS| MUTABOR, OST_BRW_WRITE, tgt_brw_write,
2735 TGT_OST_HDL_HP(HABEO_CORPUS| HABEO_REFERO | MUTABOR,
2736 OST_PUNCH, ofd_punch_hdl,
2738 TGT_OST_HDL(HABEO_CORPUS| HABEO_REFERO, OST_SYNC, ofd_sync_hdl),
2739 TGT_OST_HDL(0 | HABEO_REFERO, OST_QUOTACTL, ofd_quotactl),
2740 TGT_OST_HDL(HABEO_CORPUS | HABEO_REFERO, OST_LADVISE, ofd_ladvise_hdl),
2743 static struct tgt_opc_slice ofd_common_slice[] = {
2745 .tos_opc_start = OST_FIRST_OPC,
2746 .tos_opc_end = OST_LAST_OPC,
2747 .tos_hs = ofd_tgt_handlers
2750 .tos_opc_start = OBD_FIRST_OPC,
2751 .tos_opc_end = OBD_LAST_OPC,
2752 .tos_hs = tgt_obd_handlers
2755 .tos_opc_start = LDLM_FIRST_OPC,
2756 .tos_opc_end = LDLM_LAST_OPC,
2757 .tos_hs = tgt_dlm_handlers
2760 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
2761 .tos_opc_end = OUT_UPDATE_LAST_OPC,
2762 .tos_hs = tgt_out_handlers
2765 .tos_opc_start = SEQ_FIRST_OPC,
2766 .tos_opc_end = SEQ_LAST_OPC,
2767 .tos_hs = seq_handlers
2770 .tos_opc_start = LFSCK_FIRST_OPC,
2771 .tos_opc_end = LFSCK_LAST_OPC,
2772 .tos_hs = tgt_lfsck_handlers
2775 .tos_opc_start = SEC_FIRST_OPC,
2776 .tos_opc_end = SEC_LAST_OPC,
2777 .tos_hs = tgt_sec_ctx_handlers
2784 /* context key constructor/destructor: ofd_key_init(), ofd_key_fini() */
2785 LU_KEY_INIT_FINI(ofd, struct ofd_thread_info);
2788 * Implementation of lu_context_key::lct_key_exit.
2790 * Optional method called on lu_context_exit() for all allocated
2792 * It is used in OFD to sanitize context values which may be re-used
2793 * during another request processing by the same thread.
2795 * \param[in] ctx execution context
2796 * \param[in] key context key
2797 * \param[in] data ofd_thread_info
2799 static void ofd_key_exit(const struct lu_context *ctx,
2800 struct lu_context_key *key, void *data)
2802 struct ofd_thread_info *info = data;
2804 info->fti_env = NULL;
2805 info->fti_exp = NULL;
2808 info->fti_pre_version = 0;
2811 memset(&info->fti_attr, 0, sizeof info->fti_attr);
2814 struct lu_context_key ofd_thread_key = {
2815 .lct_tags = LCT_DT_THREAD,
2816 .lct_init = ofd_key_init,
2817 .lct_fini = ofd_key_fini,
2818 .lct_exit = ofd_key_exit
2822 * Initialize OFD device according to parameters in the config log \a cfg.
2824 * This is the main starting point of OFD initialization. It fills all OFD
2825 * parameters with their initial values and calls other initializing functions
2826 * to set up all OFD subsystems.
2828 * \param[in] env execution environment
2829 * \param[in] m OFD device
2830 * \param[in] ldt LU device type of OFD
2831 * \param[in] cfg configuration log
2833 * \retval 0 if successful
2834 * \retval negative value on error
2836 static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
2837 struct lu_device_type *ldt, struct lustre_cfg *cfg)
2839 const char *dev = lustre_cfg_string(cfg, 0);
2840 struct ofd_thread_info *info = NULL;
2841 struct obd_device *obd;
2842 struct obd_statfs *osfs;
2847 obd = class_name2obd(dev);
2849 CERROR("Cannot find obd with name %s\n", dev);
2853 rc = lu_env_refill((struct lu_env *)env);
2857 obd->u.obt.obt_magic = OBT_MAGIC;
2859 m->ofd_fmd_max_num = OFD_FMD_MAX_NUM_DEFAULT;
2860 m->ofd_fmd_max_age = OFD_FMD_MAX_AGE_DEFAULT;
2862 spin_lock_init(&m->ofd_flags_lock);
2863 m->ofd_raid_degraded = 0;
2864 m->ofd_syncjournal = 0;
2866 m->ofd_grant_compat_disable = 0;
2867 m->ofd_soft_sync_limit = OFD_SOFT_SYNC_LIMIT_DEFAULT;
2868 m->ofd_brw_size = ONE_MB_BRW_SIZE;
2871 spin_lock_init(&m->ofd_osfs_lock);
2872 m->ofd_osfs_age = cfs_time_shift_64(-1000);
2873 m->ofd_osfs_unstable = 0;
2874 m->ofd_statfs_inflight = 0;
2875 m->ofd_osfs_inflight = 0;
2878 spin_lock_init(&m->ofd_grant_lock);
2879 m->ofd_tot_dirty = 0;
2880 m->ofd_tot_granted = 0;
2881 m->ofd_tot_pending = 0;
2882 m->ofd_seq_count = 0;
2883 init_waitqueue_head(&m->ofd_inconsistency_thread.t_ctl_waitq);
2884 INIT_LIST_HEAD(&m->ofd_inconsistency_list);
2885 spin_lock_init(&m->ofd_inconsistency_lock);
2887 spin_lock_init(&m->ofd_batch_lock);
2888 init_rwsem(&m->ofd_lastid_rwsem);
2890 m->ofd_dt_dev.dd_lu_dev.ld_ops = &ofd_lu_ops;
2891 m->ofd_dt_dev.dd_lu_dev.ld_obd = obd;
2892 /* set this lu_device to obd, because error handling need it */
2893 obd->obd_lu_dev = &m->ofd_dt_dev.dd_lu_dev;
2895 rc = ofd_procfs_init(m);
2897 CERROR("Can't init ofd lprocfs, rc %d\n", rc);
2901 /* No connection accepted until configurations will finish */
2902 spin_lock(&obd->obd_dev_lock);
2903 obd->obd_no_conn = 1;
2904 spin_unlock(&obd->obd_dev_lock);
2905 obd->obd_replayable = 1;
2906 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
2907 char *str = lustre_cfg_string(cfg, 4);
2909 if (strchr(str, 'n')) {
2910 CWARN("%s: recovery disabled\n", obd->obd_name);
2911 obd->obd_replayable = 0;
2915 info = ofd_info_init(env, NULL);
2917 GOTO(err_fini_proc, rc = -EFAULT);
2919 rc = ofd_stack_init(env, m, cfg);
2921 CERROR("Can't init device stack, rc %d\n", rc);
2922 GOTO(err_fini_proc, rc);
2925 ofd_procfs_add_brw_stats_symlink(m);
2927 /* populate cached statfs data */
2928 osfs = &ofd_info(env)->fti_u.osfs;
2929 rc = ofd_statfs_internal(env, m, osfs, 0, NULL);
2931 CERROR("%s: can't get statfs data, rc %d\n", obd->obd_name, rc);
2932 GOTO(err_fini_stack, rc);
2934 if (!IS_PO2(osfs->os_bsize)) {
2935 CERROR("%s: blocksize (%d) is not a power of 2\n",
2936 obd->obd_name, osfs->os_bsize);
2937 GOTO(err_fini_stack, rc = -EPROTO);
2939 m->ofd_blockbits = fls(osfs->os_bsize) - 1;
2941 m->ofd_precreate_batch = OFD_PRECREATE_BATCH_DEFAULT;
2942 if (osfs->os_bsize * osfs->os_blocks < OFD_PRECREATE_SMALL_FS)
2943 m->ofd_precreate_batch = OFD_PRECREATE_BATCH_SMALL;
2945 snprintf(info->fti_u.name, sizeof(info->fti_u.name), "%s-%s",
2946 "filter"/*LUSTRE_OST_NAME*/, obd->obd_uuid.uuid);
2947 m->ofd_namespace = ldlm_namespace_new(obd, info->fti_u.name,
2948 LDLM_NAMESPACE_SERVER,
2949 LDLM_NAMESPACE_GREEDY,
2951 if (m->ofd_namespace == NULL)
2952 GOTO(err_fini_stack, rc = -ENOMEM);
2953 /* set obd_namespace for compatibility with old code */
2954 obd->obd_namespace = m->ofd_namespace;
2955 ldlm_register_intent(m->ofd_namespace, ofd_intent_policy);
2956 m->ofd_namespace->ns_lvbo = &ofd_lvbo;
2957 m->ofd_namespace->ns_lvbp = m;
2959 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
2960 "filter_ldlm_cb_client", &obd->obd_ldlm_client);
2962 dt_conf_get(env, m->ofd_osd, &m->ofd_dt_conf);
2964 rc = tgt_init(env, &m->ofd_lut, obd, m->ofd_osd, ofd_common_slice,
2965 OBD_FAIL_OST_ALL_REQUEST_NET,
2966 OBD_FAIL_OST_ALL_REPLY_NET);
2968 GOTO(err_free_ns, rc);
2970 rc = ofd_fs_setup(env, m, obd);
2972 GOTO(err_fini_lut, rc);
2974 rc = ofd_start_inconsistency_verification_thread(m);
2976 GOTO(err_fini_fs, rc);
2978 tgt_adapt_sptlrpc_conf(&m->ofd_lut, 1);
2983 ofd_fs_cleanup(env, m);
2985 tgt_fini(env, &m->ofd_lut);
2987 ldlm_namespace_free(m->ofd_namespace, NULL, obd->obd_force);
2988 obd->obd_namespace = m->ofd_namespace = NULL;
2990 ofd_stack_fini(env, m, &m->ofd_osd->dd_lu_dev);
2997 * Stop the OFD device
2999 * This function stops the OFD device and all its subsystems.
3000 * This is the end of OFD lifecycle.
3002 * \param[in] env execution environment
3003 * \param[in] m OFD device
3005 static void ofd_fini(const struct lu_env *env, struct ofd_device *m)
3007 struct obd_device *obd = ofd_obd(m);
3008 struct lu_device *d = &m->ofd_dt_dev.dd_lu_dev;
3009 struct lfsck_stop stop;
3011 stop.ls_status = LS_PAUSED;
3013 lfsck_stop(env, m->ofd_osd, &stop);
3014 target_recovery_fini(obd);
3015 if (m->ofd_namespace != NULL)
3016 ldlm_namespace_free_prior(m->ofd_namespace, NULL,
3017 d->ld_obd->obd_force);
3019 obd_exports_barrier(obd);
3020 obd_zombie_barrier();
3022 tgt_fini(env, &m->ofd_lut);
3023 ofd_stop_inconsistency_verification_thread(m);
3024 lfsck_degister(env, m->ofd_osd);
3025 ofd_fs_cleanup(env, m);
3027 if (m->ofd_namespace != NULL) {
3028 ldlm_namespace_free_post(m->ofd_namespace);
3029 d->ld_obd->obd_namespace = m->ofd_namespace = NULL;
3032 ofd_stack_fini(env, m, &m->ofd_dt_dev.dd_lu_dev);
3034 LASSERT(atomic_read(&d->ld_ref) == 0);
3035 server_put_mount(obd->obd_name, true);
3040 * Implementation of lu_device_type_operations::ldto_device_fini.
3042 * Finalize device. Dual to ofd_device_init(). It is called from
3043 * obd_precleanup() and stops the current device.
3045 * \param[in] env execution environment
3046 * \param[in] d LU device of OFD
3050 static struct lu_device *ofd_device_fini(const struct lu_env *env,
3051 struct lu_device *d)
3054 ofd_fini(env, ofd_dev(d));
3059 * Implementation of lu_device_type_operations::ldto_device_free.
3061 * Free OFD device. Dual to ofd_device_alloc().
3063 * \param[in] env execution environment
3064 * \param[in] d LU device of OFD
3068 static struct lu_device *ofd_device_free(const struct lu_env *env,
3069 struct lu_device *d)
3071 struct ofd_device *m = ofd_dev(d);
3073 dt_device_fini(&m->ofd_dt_dev);
3079 * Implementation of lu_device_type_operations::ldto_device_alloc.
3081 * This function allocates the new OFD device. It is called from
3082 * obd_setup() if OBD device had lu_device_type defined.
3084 * \param[in] env execution environment
3085 * \param[in] t lu_device_type of OFD device
3086 * \param[in] cfg configuration log
3088 * \retval pointer to the lu_device of just allocated OFD
3089 * \retval ERR_PTR of return value on error
3091 static struct lu_device *ofd_device_alloc(const struct lu_env *env,
3092 struct lu_device_type *t,
3093 struct lustre_cfg *cfg)
3095 struct ofd_device *m;
3096 struct lu_device *l;
3101 return ERR_PTR(-ENOMEM);
3103 l = &m->ofd_dt_dev.dd_lu_dev;
3104 dt_device_init(&m->ofd_dt_dev, t);
3105 rc = ofd_init0(env, m, t, cfg);
3107 ofd_device_free(env, l);
3114 /* type constructor/destructor: ofd_type_init(), ofd_type_fini() */
3115 LU_TYPE_INIT_FINI(ofd, &ofd_thread_key);
3117 static struct lu_device_type_operations ofd_device_type_ops = {
3118 .ldto_init = ofd_type_init,
3119 .ldto_fini = ofd_type_fini,
3121 .ldto_start = ofd_type_start,
3122 .ldto_stop = ofd_type_stop,
3124 .ldto_device_alloc = ofd_device_alloc,
3125 .ldto_device_free = ofd_device_free,
3126 .ldto_device_fini = ofd_device_fini
3129 static struct lu_device_type ofd_device_type = {
3130 .ldt_tags = LU_DEVICE_DT,
3131 .ldt_name = LUSTRE_OST_NAME,
3132 .ldt_ops = &ofd_device_type_ops,
3133 .ldt_ctx_tags = LCT_DT_THREAD
3137 * Initialize OFD module.
3139 * This function is called upon module loading. It registers OFD device type
3140 * and prepares all in-memory structures used by all OFD devices.
3142 * \retval 0 if successful
3143 * \retval negative value on error
3145 static int __init ofd_init(void)
3149 rc = lu_kmem_init(ofd_caches);
3153 rc = ofd_fmd_init();
3155 lu_kmem_fini(ofd_caches);
3159 rc = class_register_type(&ofd_obd_ops, NULL, true, NULL,
3160 LUSTRE_OST_NAME, &ofd_device_type);
3167 * This function is called upon OFD module unloading.
3168 * It frees all related structures and unregisters OFD device type.
3170 static void __exit ofd_exit(void)
3173 lu_kmem_fini(ofd_caches);
3174 class_unregister_type(LUSTRE_OST_NAME);
3177 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
3178 MODULE_DESCRIPTION("Lustre Object Filtering Device");
3179 MODULE_VERSION(LUSTRE_VERSION_STRING);
3180 MODULE_LICENSE("GPL");
3182 module_init(ofd_init);
3183 module_exit(ofd_exit);