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, 2017, 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 <obd_cksum.h>
73 #include <uapi/linux/lustre/lustre_param.h>
74 #include <lustre_fid.h>
75 #include <lustre_lfsck.h>
76 #include <lustre_dlm.h>
77 #include <lustre_quota.h>
78 #include <lustre_nodemap.h>
79 #include <lustre_log.h>
81 #include "ofd_internal.h"
83 /* Slab for OFD object allocation */
84 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,
167 const char *dev = lustre_cfg_string(cfg, 0);
169 struct ofd_thread_info *info = ofd_info(env);
170 struct lustre_mount_info *lmi;
171 struct lustre_mount_data *lmd;
177 lmi = server_get_mount(dev);
179 CERROR("Cannot get mount info for %s!\n", dev);
183 lmd = s2lsi(lmi->lmi_sb)->lsi_lmd;
185 if (lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
186 m->ofd_skip_lfsck = 1;
187 if (lmd->lmd_flags & LMD_FLG_NO_PRECREATE)
188 m->ofd_no_precreate = 1;
189 *lmd_flags = lmd->lmd_flags;
192 /* find bottom osd */
193 OBD_ALLOC(osdname, MTI_NAME_MAXLEN);
197 snprintf(osdname, MTI_NAME_MAXLEN, "%s-osd", dev);
198 rc = ofd_connect_to_next(env, m, osdname, &m->ofd_osd_exp);
199 OBD_FREE(osdname, MTI_NAME_MAXLEN);
203 d = m->ofd_osd_exp->exp_obd->obd_lu_dev;
205 m->ofd_osd = lu2dt_dev(d);
207 snprintf(info->fti_u.name, sizeof(info->fti_u.name),
208 "%s-osd", lustre_cfg_string(cfg, 0));
214 * Finalize the device stack OFD-OSD.
216 * This function cleans OFD-OSD device stack and
217 * disconnects OFD from the OSD.
219 * \param[in] env execution environment
220 * \param[in] m OFD device
221 * \param[in] top top device of stack
223 * \retval 0 if successful
224 * \retval negative value on error
226 static void ofd_stack_fini(const struct lu_env *env, struct ofd_device *m,
227 struct lu_device *top)
229 struct obd_device *obd = ofd_obd(m);
230 struct lustre_cfg_bufs bufs;
231 struct lustre_cfg *lcfg;
236 lu_site_purge(env, top->ld_site, ~0);
237 /* process cleanup, pass mdt obd name to get obd umount flags */
238 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
243 lustre_cfg_bufs_set_string(&bufs, 1, flags);
244 OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
247 lustre_cfg_init(lcfg, LCFG_CLEANUP, &bufs);
250 top->ld_ops->ldo_process_config(env, top, lcfg);
251 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
253 if (m->ofd_los != NULL) {
254 local_oid_storage_fini(env, m->ofd_los);
258 lu_site_purge(env, top->ld_site, ~0);
259 if (!cfs_hash_is_empty(top->ld_site->ls_obj_hash)) {
260 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_OTHER, NULL);
261 lu_site_print(env, top->ld_site, &msgdata, lu_cdebug_printer);
264 LASSERT(m->ofd_osd_exp);
265 obd_disconnect(m->ofd_osd_exp);
270 static void ofd_stack_pre_fini(const struct lu_env *env, struct ofd_device *m,
271 struct lu_device *top)
273 struct lustre_cfg_bufs bufs;
274 struct lustre_cfg *lcfg;
279 lustre_cfg_bufs_reset(&bufs, ofd_name(m));
280 lustre_cfg_bufs_set_string(&bufs, 1, NULL);
281 OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
283 CERROR("%s: failed to trigger LCFG_PRE_CLEANUP\n", ofd_name(m));
285 lustre_cfg_init(lcfg, LCFG_PRE_CLEANUP, &bufs);
286 top->ld_ops->ldo_process_config(env, top, lcfg);
287 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount,
288 lcfg->lcfg_buflens));
294 /* For interoperability, see mdt_interop_param[]. */
295 static struct cfg_interop_param ofd_interop_param[] = {
296 { "ost.quota_type", NULL },
301 * Check if parameters are symlinks to the OSD.
303 * Some parameters were moved from ofd to osd and only their
304 * symlinks were kept in ofd by LU-3106. They are:
305 * -writehthrough_cache_enable
306 * -readcache_max_filesize
310 * Since they are not included by the static lprocfs var list, a pre-check
311 * is added for them to avoid "unknown param" errors. If they are matched
312 * in this check, they will be passed to the OSD directly.
314 * \param[in] param parameters to check
316 * \retval true if param is symlink to OSD param
319 static bool match_symlink_param(char *param)
324 if (class_match_param(param, PARAM_OST, ¶m) == 0) {
325 sval = strchr(param, '=');
327 paramlen = sval - param;
328 if (strncmp(param, "brw_stats", paramlen) == 0)
337 * Process various configuration parameters.
339 * This function is used by MGS to process specific configurations and
340 * pass them through to the next device in server stack, i.e. the OSD.
342 * \param[in] env execution environment
343 * \param[in] d LU device of OFD
344 * \param[in] cfg parameters to process
346 * \retval 0 if successful
347 * \retval negative value on error
349 static int ofd_process_config(const struct lu_env *env, struct lu_device *d,
350 struct lustre_cfg *cfg)
352 struct ofd_device *m = ofd_dev(d);
353 struct dt_device *dt_next = m->ofd_osd;
354 struct lu_device *next = &dt_next->dd_lu_dev;
359 switch (cfg->lcfg_command) {
361 /* For interoperability */
362 struct cfg_interop_param *ptr = NULL;
363 struct lustre_cfg *old_cfg = NULL;
367 param = lustre_cfg_string(cfg, 1);
369 CERROR("param is empty\n");
374 ptr = class_find_old_param(param, ofd_interop_param);
376 if (ptr->new_param == NULL) {
378 CWARN("For interoperability, skip this %s."
379 " It is obsolete.\n", ptr->old_param);
383 CWARN("Found old param %s, changed it to %s.\n",
384 ptr->old_param, ptr->new_param);
387 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
394 if (match_symlink_param(param)) {
395 rc = next->ld_ops->ldo_process_config(env, next, cfg);
399 count = class_modify_config(cfg, PARAM_OST,
400 &d->ld_obd->obd_kset.kobj);
405 CDEBUG(D_CONFIG, "pass param %s down the stack.\n",
407 /* we don't understand; pass it on */
408 rc = next->ld_ops->ldo_process_config(env, next, cfg);
411 case LCFG_SPTLRPC_CONF: {
416 /* others are passed further */
417 rc = next->ld_ops->ldo_process_config(env, next, cfg);
424 * Implementation of lu_object_operations::loo_object_init for OFD
426 * Allocate just the next object (OSD) in stack.
428 * \param[in] env execution environment
429 * \param[in] o lu_object of OFD object
430 * \param[in] conf additional configuration parameters, not used here
432 * \retval 0 if successful
433 * \retval negative value on error
435 static int ofd_object_init(const struct lu_env *env, struct lu_object *o,
436 const struct lu_object_conf *conf)
438 struct ofd_device *d = ofd_dev(o->lo_dev);
439 struct lu_device *under;
440 struct lu_object *below;
445 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
446 PFID(lu_object_fid(o)));
448 under = &d->ofd_osd->dd_lu_dev;
449 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
451 lu_object_add(o, below);
458 static void ofd_object_free_rcu(struct rcu_head *head)
460 struct ofd_object *of = container_of(head, struct ofd_object,
463 kmem_cache_free(ofd_object_kmem, of);
467 * Implementation of lu_object_operations::loo_object_free.
469 * Finish OFD object lifecycle and free its memory.
471 * \param[in] env execution environment
472 * \param[in] o LU object of OFD object
474 static void ofd_object_free(const struct lu_env *env, struct lu_object *o)
476 struct ofd_object *of = ofd_obj(o);
477 struct lu_object_header *h;
482 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
483 PFID(lu_object_fid(o)));
486 lu_object_header_fini(h);
487 OBD_FREE_PRE(of, sizeof(*of), "slab-freed");
488 call_rcu(&of->ofo_header.loh_rcu, ofd_object_free_rcu);
493 * Implementation of lu_object_operations::loo_object_print.
495 * Print OFD part of compound OFD-OSD object. See lu_object_print() and
496 * LU_OBJECT_DEBUG() for more details about the compound object printing.
498 * \param[in] env execution environment
499 * \param[in] cookie opaque data passed to the printer function
500 * \param[in] p printer function to use
501 * \param[in] o LU object of OFD object
503 * \retval 0 if successful
504 * \retval negative value on error
506 static int ofd_object_print(const struct lu_env *env, void *cookie,
507 lu_printer_t p, const struct lu_object *o)
509 return (*p)(env, cookie, LUSTRE_OST_NAME"-object@%p", o);
512 static struct lu_object_operations ofd_obj_ops = {
513 .loo_object_init = ofd_object_init,
514 .loo_object_free = ofd_object_free,
515 .loo_object_print = ofd_object_print
519 * Implementation of lu_device_operations::lod_object_alloc.
521 * This function allocates OFD part of compound OFD-OSD object and
522 * initializes its header, because OFD is the top device in stack
524 * \param[in] env execution environment
525 * \param[in] hdr object header, NULL for OFD
526 * \param[in] d lu_device
528 * \retval allocated object if successful
529 * \retval NULL value on failed allocation
531 static struct lu_object *ofd_object_alloc(const struct lu_env *env,
532 const struct lu_object_header *hdr,
535 struct ofd_object *of;
539 OBD_SLAB_ALLOC_PTR_GFP(of, ofd_object_kmem, GFP_NOFS);
542 struct lu_object_header *h;
544 o = &of->ofo_obj.do_lu;
546 lu_object_header_init(h);
547 lu_object_init(o, h, d);
548 lu_object_add_top(h, o);
549 o->lo_ops = &ofd_obj_ops;
557 * Return the result of LFSCK run to the OFD.
559 * Notify OFD about result of LFSCK run. That may block the new object
560 * creation until problem is fixed by LFSCK.
562 * \param[in] env execution environment
563 * \param[in] data pointer to the OFD device
564 * \param[in] event LFSCK event type
566 * \retval 0 if successful
567 * \retval negative value on unknown event
569 static int ofd_lfsck_out_notify(const struct lu_env *env, void *data,
570 enum lfsck_events event)
572 struct ofd_device *ofd = data;
573 struct obd_device *obd = ofd_obd(ofd);
576 case LE_LASTID_REBUILDING:
577 CWARN("%s: Found crashed LAST_ID, deny creating new OST-object "
578 "on the device until the LAST_ID rebuilt successfully.\n",
580 down_write(&ofd->ofd_lastid_rwsem);
581 ofd->ofd_lastid_rebuilding = 1;
582 up_write(&ofd->ofd_lastid_rwsem);
584 case LE_LASTID_REBUILT: {
585 down_write(&ofd->ofd_lastid_rwsem);
586 ofd_seqs_free(env, ofd);
587 ofd->ofd_lastid_rebuilding = 0;
588 ofd->ofd_lastid_gen++;
589 up_write(&ofd->ofd_lastid_rwsem);
590 CWARN("%s: Rebuilt crashed LAST_ID files successfully.\n",
595 CERROR("%s: unknown lfsck event: rc = %d\n",
596 ofd_name(ofd), event);
604 * Implementation of lu_device_operations::ldo_prepare.
606 * This method is called after layer has been initialized and before it starts
607 * serving user requests. In OFD it starts lfsk check routines and initializes
610 * \param[in] env execution environment
611 * \param[in] pdev higher device in stack, NULL for OFD
612 * \param[in] dev lu_device of OFD device
614 * \retval 0 if successful
615 * \retval negative value on error
617 static int ofd_prepare(const struct lu_env *env, struct lu_device *pdev,
618 struct lu_device *dev)
620 struct ofd_thread_info *info;
621 struct ofd_device *ofd = ofd_dev(dev);
622 struct obd_device *obd = ofd_obd(ofd);
623 struct lu_device *next = &ofd->ofd_osd->dd_lu_dev;
628 info = ofd_info_init(env, NULL);
632 /* initialize lower device */
633 rc = next->ld_ops->ldo_prepare(env, dev, next);
637 rc = lfsck_register(env, ofd->ofd_osd, ofd->ofd_osd, obd,
638 ofd_lfsck_out_notify, ofd, false);
640 CERROR("%s: failed to initialize lfsck: rc = %d\n",
645 rc = lfsck_register_namespace(env, ofd->ofd_osd, ofd->ofd_namespace);
646 /* The LFSCK instance is registered just now, so it must be there when
647 * register the namespace to such instance. */
648 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
650 target_recovery_init(&ofd->ofd_lut, tgt_request_handle);
651 OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_OST_PREPARE_DELAY, OBD_FAIL_ONCE,
652 (OBD_TIMEOUT_DEFAULT + 1) / 4);
653 LASSERT(obd->obd_no_conn);
654 spin_lock(&obd->obd_dev_lock);
655 obd->obd_no_conn = 0;
656 spin_unlock(&obd->obd_dev_lock);
658 if (obd->obd_recovering == 0)
659 ofd_postrecov(env, ofd);
665 * Implementation of lu_device_operations::ldo_recovery_complete.
667 * This method notifies all layers about 'recovery complete' event. That means
668 * device is in full state and consistent. An OFD calculates available grant
669 * space upon this event.
671 * \param[in] env execution environment
672 * \param[in] dev lu_device of OFD device
674 * \retval 0 if successful
675 * \retval negative value on error
677 static int ofd_recovery_complete(const struct lu_env *env,
678 struct lu_device *dev)
680 struct ofd_thread_info *oti = ofd_info(env);
681 struct ofd_device *ofd = ofd_dev(dev);
682 struct lu_device *next = &ofd->ofd_osd->dd_lu_dev;
688 * Grant space for object precreation on the self export.
689 * The initial reserved space (i.e. 10MB for zfs and 280KB for ldiskfs)
690 * is enough to create 10k objects. More space is then acquired for
691 * precreation in tgt_grant_create().
693 memset(&oti->fti_ocd, 0, sizeof(oti->fti_ocd));
694 oti->fti_ocd.ocd_grant = OST_MAX_PRECREATE / 2;
695 oti->fti_ocd.ocd_grant *= ofd->ofd_lut.lut_dt_conf.ddp_inodespace;
696 oti->fti_ocd.ocd_connect_flags = OBD_CONNECT_GRANT |
697 OBD_CONNECT_GRANT_PARAM;
698 tgt_grant_connect(env, dev->ld_obd->obd_self_export, &oti->fti_ocd,
700 rc = next->ld_ops->ldo_recovery_complete(env, next);
705 * lu_device_operations matrix for OFD device.
707 static struct lu_device_operations ofd_lu_ops = {
708 .ldo_object_alloc = ofd_object_alloc,
709 .ldo_process_config = ofd_process_config,
710 .ldo_recovery_complete = ofd_recovery_complete,
711 .ldo_prepare = ofd_prepare,
714 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 14, 53, 0)
716 * Expose OSD statistics to OFD layer.
718 * The osd interfaces to the backend file system exposes useful data
719 * such as brw_stats and read or write cache states. This same data
720 * needs to be exposed into the obdfilter (ofd) layer to maintain
721 * backwards compatibility. This function creates the symlinks in the
722 * proc layer to enable this.
724 * \param[in] ofd OFD device
726 static void ofd_procfs_add_brw_stats_symlink(struct ofd_device *ofd)
728 struct obd_device *obd = ofd_obd(ofd);
729 struct obd_device *osd_obd = ofd->ofd_osd_exp->exp_obd;
730 struct kobj_type *osd_type;
733 osd_type = get_ktype(&ofd->ofd_osd->dd_kobj);
734 for (i = 0; osd_type->default_attrs[i]; i++) {
735 if (strcmp(osd_type->default_attrs[i]->name,
736 "read_cache_enable") == 0) {
737 ofd->ofd_read_cache_enable =
738 osd_type->default_attrs[i];
741 if (strcmp(osd_type->default_attrs[i]->name,
742 "readcache_max_filesize") == 0) {
743 ofd->ofd_read_cache_max_filesize =
744 osd_type->default_attrs[i];
747 if (strcmp(osd_type->default_attrs[i]->name,
748 "writethrough_cache_enable") == 0) {
749 ofd->ofd_write_cache_enable =
750 osd_type->default_attrs[i];
754 if (obd->obd_proc_entry == NULL)
757 lprocfs_add_symlink("brw_stats", obd->obd_proc_entry,
758 "../../%s/%s/brw_stats",
759 osd_obd->obd_type->typ_name, obd->obd_name);
764 * Cleanup all procfs entries in OFD.
766 * \param[in] ofd OFD device
768 static void ofd_procfs_fini(struct ofd_device *ofd)
770 struct obd_device *obd = ofd_obd(ofd);
772 tgt_tunables_fini(&ofd->ofd_lut);
773 lprocfs_free_per_client_stats(obd);
774 lprocfs_obd_cleanup(obd);
775 lprocfs_free_obd_stats(obd);
776 lprocfs_job_stats_fini(obd);
780 * Stop SEQ/FID server on OFD.
782 * \param[in] env execution environment
783 * \param[in] ofd OFD device
785 * \retval 0 if successful
786 * \retval negative value on error
788 int ofd_fid_fini(const struct lu_env *env, struct ofd_device *ofd)
790 return seq_site_fini(env, &ofd->ofd_seq_site);
794 * Start SEQ/FID server on OFD.
796 * The SEQ/FID server on OFD is needed to allocate FIDs for new objects.
797 * It also connects to the master server to get own FID sequence (SEQ) range
798 * to this particular OFD. Typically that happens when the OST is first
799 * formatted or in the rare case that it exhausts the local sequence range.
801 * The sequence range is allocated out to the MDTs for OST object allocations,
802 * and not directly to the clients.
804 * \param[in] env execution environment
805 * \param[in] ofd OFD device
807 * \retval 0 if successful
808 * \retval negative value on error
810 int ofd_fid_init(const struct lu_env *env, struct ofd_device *ofd)
812 struct seq_server_site *ss = &ofd->ofd_seq_site;
813 struct lu_device *lu = &ofd->ofd_dt_dev.dd_lu_dev;
814 char *obd_name = ofd_name(ofd);
816 int len = strlen(obd_name) + 7;
819 ss = &ofd->ofd_seq_site;
820 lu->ld_site->ld_seq_site = ss;
821 ss->ss_lu = lu->ld_site;
822 ss->ss_node_id = ofd->ofd_lut.lut_lsd.lsd_osd_index;
824 OBD_ALLOC(name, len);
828 OBD_ALLOC_PTR(ss->ss_server_seq);
829 if (ss->ss_server_seq == NULL)
830 GOTO(out_name, rc = -ENOMEM);
832 rc = seq_server_init(env, ss->ss_server_seq, ofd->ofd_osd, obd_name,
833 LUSTRE_SEQ_SERVER, ss);
835 CERROR("%s: seq server init error: rc = %d\n", obd_name, rc);
836 GOTO(out_server, rc);
838 ss->ss_server_seq->lss_space.lsr_index = ss->ss_node_id;
840 OBD_ALLOC_PTR(ss->ss_client_seq);
841 if (ss->ss_client_seq == NULL)
842 GOTO(out_server, rc = -ENOMEM);
844 snprintf(name, len, "%s-super", obd_name);
845 rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_DATA,
848 CERROR("%s: seq client init error: rc = %d\n", obd_name, rc);
849 GOTO(out_client, rc);
852 rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
856 seq_client_fini(ss->ss_client_seq);
857 OBD_FREE_PTR(ss->ss_client_seq);
858 ss->ss_client_seq = NULL;
860 seq_server_fini(ss->ss_server_seq, env);
861 OBD_FREE_PTR(ss->ss_server_seq);
862 ss->ss_server_seq = NULL;
871 * OFD request handler for OST_SET_INFO RPC.
873 * This is OFD-specific part of request handling
875 * \param[in] tsi target session environment for this request
877 * \retval 0 if successful
878 * \retval negative value on error
880 static int ofd_set_info_hdl(struct tgt_session_info *tsi)
882 struct ptlrpc_request *req = tgt_ses_req(tsi);
883 struct ost_body *body = NULL, *repbody;
884 void *key, *val = NULL;
885 int keylen, vallen, rc = 0;
886 bool is_grant_shrink;
890 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
892 DEBUG_REQ(D_HA, req, "no set_info key");
893 RETURN(err_serious(-EFAULT));
895 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
898 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
900 DEBUG_REQ(D_HA, req, "no set_info val");
901 RETURN(err_serious(-EFAULT));
903 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
906 is_grant_shrink = KEY_IS(KEY_GRANT_SHRINK);
908 /* In this case the value is actually an RMF_OST_BODY, so we
909 * transmutate the type of this PTLRPC */
910 req_capsule_extend(tsi->tsi_pill, &RQF_OST_SET_GRANT_INFO);
912 rc = req_capsule_server_pack(tsi->tsi_pill);
916 if (is_grant_shrink) {
917 body = req_capsule_client_get(tsi->tsi_pill, &RMF_OST_BODY);
919 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
922 /** handle grant shrink, similar to a read request */
923 tgt_grant_prepare_read(tsi->tsi_env, tsi->tsi_exp,
925 } else if (KEY_IS(KEY_EVICT_BY_NID)) {
927 obd_export_evict_by_nid(tsi->tsi_exp->exp_obd, val);
930 CERROR("%s: Unsupported key %s\n",
931 tgt_name(tsi->tsi_tgt), (char *)key);
934 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SET_INFO,
941 * Get FIEMAP (FIle Extent MAPping) for object with the given FID.
943 * This function returns a list of extents which describes how a file's
944 * blocks are laid out on the disk.
946 * \param[in] env execution environment
947 * \param[in] ofd OFD device
948 * \param[in] fid FID of object
949 * \param[in] fiemap fiemap structure to fill with data
951 * \retval 0 if \a fiemap is filled with data successfully
952 * \retval negative value on error
954 int ofd_fiemap_get(const struct lu_env *env, struct ofd_device *ofd,
955 struct lu_fid *fid, struct fiemap *fiemap)
957 struct ofd_object *fo;
960 fo = ofd_object_find(env, ofd, fid);
962 CERROR("%s: error finding object "DFID"\n",
963 ofd_name(ofd), PFID(fid));
967 ofd_read_lock(env, fo);
968 if (ofd_object_exists(fo))
969 rc = dt_fiemap_get(env, ofd_object_child(fo), fiemap);
972 ofd_read_unlock(env, fo);
973 ofd_object_put(env, fo);
978 static int ofd_lock_unlock_region(const struct lu_env *env,
979 struct ldlm_namespace *ns,
980 struct ldlm_res_id *res_id,
981 unsigned long long begin,
982 unsigned long long end)
986 struct lustre_handle lh = { 0 };
988 LASSERT(begin <= end);
990 rc = tgt_extent_lock(env, ns, res_id, begin, end, &lh, LCK_PR, &flags);
994 CDEBUG(D_OTHER, "ost lock [%llu,%llu], lh=%p\n", begin, end, &lh);
995 tgt_extent_unlock(&lh, LCK_PR);
1001 * Lock the sparse areas of given resource.
1003 * The locking of sparse areas will cause dirty data to be flushed back from
1004 * clients. This is used when getting the FIEMAP of an object to make sure
1005 * there is no unaccounted cached data on clients.
1007 * This function goes through \a fiemap list of extents and locks only sparse
1008 * areas between extents.
1010 * \param[in] ns LDLM namespace
1011 * \param[in] res_id resource ID
1012 * \param[in] fiemap file extents mapping on disk
1013 * \param[in] locked list head of regions list
1015 * \retval 0 if successful
1016 * \retval negative value on error
1018 static int lock_zero_regions(const struct lu_env *env,
1019 struct ldlm_namespace *ns,
1020 struct ldlm_res_id *res_id,
1021 struct fiemap *fiemap)
1023 __u64 begin = fiemap->fm_start;
1026 struct fiemap_extent *fiemap_start = fiemap->fm_extents;
1030 CDEBUG(D_OTHER, "extents count %u\n", fiemap->fm_mapped_extents);
1031 for (i = 0; i < fiemap->fm_mapped_extents; i++) {
1032 if (fiemap_start[i].fe_logical > begin) {
1033 CDEBUG(D_OTHER, "ost lock [%llu,%llu]\n",
1034 begin, fiemap_start[i].fe_logical);
1035 rc = ofd_lock_unlock_region(env, ns, res_id, begin,
1036 fiemap_start[i].fe_logical);
1041 begin = fiemap_start[i].fe_logical + fiemap_start[i].fe_length;
1044 if (begin < (fiemap->fm_start + fiemap->fm_length)) {
1045 CDEBUG(D_OTHER, "ost lock [%llu,%llu]\n",
1046 begin, fiemap->fm_start + fiemap->fm_length);
1047 rc = ofd_lock_unlock_region(env, ns, res_id, begin,
1048 fiemap->fm_start + fiemap->fm_length);
1056 * OFD request handler for OST_GET_INFO RPC.
1058 * This is OFD-specific part of request handling. The OFD-specific keys are:
1059 * - KEY_LAST_ID (obsolete)
1063 * This function reads needed data from storage and fills reply with it.
1065 * Note: the KEY_LAST_ID is obsolete, replaced by KEY_LAST_FID on newer MDTs,
1066 * and is kept for compatibility.
1068 * \param[in] tsi target session environment for this request
1070 * \retval 0 if successful
1071 * \retval negative value on error
1073 static int ofd_get_info_hdl(struct tgt_session_info *tsi)
1075 struct obd_export *exp = tsi->tsi_exp;
1076 struct ofd_device *ofd = ofd_exp(exp);
1077 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1080 int replylen, rc = 0;
1084 /* this common part for get_info rpc */
1085 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
1087 DEBUG_REQ(D_HA, tgt_ses_req(tsi), "no get_info key");
1088 RETURN(err_serious(-EPROTO));
1090 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
1093 if (KEY_IS(KEY_LAST_ID)) {
1095 struct ofd_seq *oseq;
1097 req_capsule_extend(tsi->tsi_pill, &RQF_OST_GET_INFO_LAST_ID);
1098 rc = req_capsule_server_pack(tsi->tsi_pill);
1100 RETURN(err_serious(rc));
1102 last_id = req_capsule_server_get(tsi->tsi_pill, &RMF_OBD_ID);
1104 oseq = ofd_seq_load(tsi->tsi_env, ofd,
1105 (u64)exp->exp_filter_data.fed_group);
1109 *last_id = ofd_seq_last_oid(oseq);
1110 ofd_seq_put(tsi->tsi_env, oseq);
1111 } else if (KEY_IS(KEY_FIEMAP)) {
1112 struct ll_fiemap_info_key *fm_key;
1113 struct fiemap *fiemap;
1116 req_capsule_extend(tsi->tsi_pill, &RQF_OST_GET_INFO_FIEMAP);
1118 fm_key = req_capsule_client_get(tsi->tsi_pill, &RMF_FIEMAP_KEY);
1119 rc = tgt_validate_obdo(tsi, &fm_key->lfik_oa);
1121 RETURN(err_serious(rc));
1123 fid = &fm_key->lfik_oa.o_oi.oi_fid;
1125 CDEBUG(D_INODE, "get FIEMAP of object "DFID"\n", PFID(fid));
1127 replylen = fiemap_count_to_size(
1128 fm_key->lfik_fiemap.fm_extent_count);
1129 req_capsule_set_size(tsi->tsi_pill, &RMF_FIEMAP_VAL,
1130 RCL_SERVER, replylen);
1132 rc = req_capsule_server_pack(tsi->tsi_pill);
1134 RETURN(err_serious(rc));
1136 fiemap = req_capsule_server_get(tsi->tsi_pill, &RMF_FIEMAP_VAL);
1140 *fiemap = fm_key->lfik_fiemap;
1141 rc = ofd_fiemap_get(tsi->tsi_env, ofd, fid, fiemap);
1143 /* LU-3219: Lock the sparse areas to make sure dirty
1144 * flushed back from client, then call fiemap again. */
1145 if (fm_key->lfik_oa.o_valid & OBD_MD_FLFLAGS &&
1146 fm_key->lfik_oa.o_flags & OBD_FL_SRVLOCK) {
1147 ost_fid_build_resid(fid, &fti->fti_resid);
1148 rc = lock_zero_regions(tsi->tsi_env, ofd->ofd_namespace,
1149 &fti->fti_resid, fiemap);
1151 rc = ofd_fiemap_get(tsi->tsi_env, ofd, fid,
1154 } else if (KEY_IS(KEY_LAST_FID)) {
1155 struct ofd_device *ofd = ofd_exp(exp);
1156 struct ofd_seq *oseq;
1160 req_capsule_extend(tsi->tsi_pill, &RQF_OST_GET_INFO_LAST_FID);
1161 rc = req_capsule_server_pack(tsi->tsi_pill);
1163 RETURN(err_serious(rc));
1165 fid = req_capsule_client_get(tsi->tsi_pill, &RMF_FID);
1167 RETURN(err_serious(-EPROTO));
1169 fid_le_to_cpu(&fti->fti_ostid.oi_fid, fid);
1171 fid = req_capsule_server_get(tsi->tsi_pill, &RMF_FID);
1175 oseq = ofd_seq_load(tsi->tsi_env, ofd,
1176 ostid_seq(&fti->fti_ostid));
1178 RETURN(PTR_ERR(oseq));
1180 rc = ostid_to_fid(fid, &oseq->os_oi,
1181 ofd->ofd_lut.lut_lsd.lsd_osd_index);
1185 CDEBUG(D_HA, "%s: LAST FID is "DFID"\n", ofd_name(ofd),
1188 ofd_seq_put(tsi->tsi_env, oseq);
1190 CERROR("%s: not supported key %s\n", tgt_name(tsi->tsi_tgt),
1194 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_GET_INFO,
1201 * OFD request handler for OST_GETATTR RPC.
1203 * This is OFD-specific part of request handling. It finds the OFD object
1204 * by its FID, gets attributes from storage and packs result to the reply.
1206 * \param[in] tsi target session environment for this request
1208 * \retval 0 if successful
1209 * \retval negative value on error
1211 static int ofd_getattr_hdl(struct tgt_session_info *tsi)
1213 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1214 struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
1215 struct ost_body *repbody;
1216 struct lustre_handle lh = { 0 };
1217 struct ofd_object *fo;
1219 enum ldlm_mode lock_mode = LCK_PR;
1224 LASSERT(tsi->tsi_ost_body != NULL);
1226 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1227 if (repbody == NULL)
1230 repbody->oa.o_oi = tsi->tsi_ost_body->oa.o_oi;
1231 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1233 srvlock = tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLFLAGS &&
1234 tsi->tsi_ost_body->oa.o_flags & OBD_FL_SRVLOCK;
1237 if (unlikely(tsi->tsi_ost_body->oa.o_flags & OBD_FL_FLUSH))
1240 rc = tgt_extent_lock(tsi->tsi_env,
1241 tsi->tsi_tgt->lut_obd->obd_namespace,
1242 &tsi->tsi_resid, 0, OBD_OBJECT_EOF, &lh,
1248 fo = ofd_object_find_exists(tsi->tsi_env, ofd, &tsi->tsi_fid);
1250 GOTO(out, rc = PTR_ERR(fo));
1252 rc = ofd_attr_get(tsi->tsi_env, fo, &fti->fti_attr);
1256 obdo_from_la(&repbody->oa, &fti->fti_attr,
1257 OFD_VALID_FLAGS | LA_UID | LA_GID | LA_PROJID);
1259 /* Store object version in reply */
1260 curr_version = dt_version_get(tsi->tsi_env,
1261 ofd_object_child(fo));
1262 if ((__s64)curr_version != -EOPNOTSUPP) {
1263 repbody->oa.o_valid |= OBD_MD_FLDATAVERSION;
1264 repbody->oa.o_data_version = curr_version;
1267 if (fo->ofo_ff.ff_layout_version > 0) {
1268 repbody->oa.o_valid |= OBD_MD_LAYOUT_VERSION;
1269 repbody->oa.o_layout_version =
1270 fo->ofo_ff.ff_layout_version + fo->ofo_ff.ff_range;
1272 CDEBUG(D_INODE, DFID": get layout version: %u\n",
1273 PFID(&tsi->tsi_fid),
1274 repbody->oa.o_layout_version);
1278 ofd_object_put(tsi->tsi_env, fo);
1281 tgt_extent_unlock(&lh, lock_mode);
1283 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_GETATTR,
1286 repbody->oa.o_valid |= OBD_MD_FLFLAGS;
1287 repbody->oa.o_flags = OBD_FL_FLUSH;
1293 * OFD request handler for OST_SETATTR RPC.
1295 * This is OFD-specific part of request handling. It finds the OFD object
1296 * by its FID, sets attributes from request and packs result to the reply.
1298 * \param[in] tsi target session environment for this request
1300 * \retval 0 if successful
1301 * \retval negative value on error
1303 static int ofd_setattr_hdl(struct tgt_session_info *tsi)
1305 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1306 struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
1307 struct ost_body *body = tsi->tsi_ost_body;
1308 struct ost_body *repbody;
1309 struct ldlm_resource *res;
1310 struct ofd_object *fo;
1315 LASSERT(body != NULL);
1317 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1318 if (repbody == NULL)
1321 repbody->oa.o_oi = body->oa.o_oi;
1322 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1324 /* This would be very bad - accidentally truncating a file when
1325 * changing the time or similar - bug 12203. */
1326 if (body->oa.o_valid & OBD_MD_FLSIZE &&
1327 body->oa.o_size != OBD_OBJECT_EOF) {
1328 static char mdsinum[48];
1330 if (body->oa.o_valid & OBD_MD_FLFID)
1331 snprintf(mdsinum, sizeof(mdsinum) - 1,
1332 "of parent "DFID, body->oa.o_parent_seq,
1333 body->oa.o_parent_oid, 0);
1337 CERROR("%s: setattr from %s is trying to truncate object "DFID
1338 " %s\n", ofd_name(ofd), obd_export_nid2str(tsi->tsi_exp),
1339 PFID(&tsi->tsi_fid), mdsinum);
1343 fo = ofd_object_find_exists(tsi->tsi_env, ofd, &tsi->tsi_fid);
1345 GOTO(out, rc = PTR_ERR(fo));
1347 la_from_obdo(&fti->fti_attr, &body->oa, body->oa.o_valid);
1348 fti->fti_attr.la_valid &= ~LA_TYPE;
1350 /* setting objects attributes (including owner/group) */
1351 rc = ofd_attr_set(tsi->tsi_env, fo, &fti->fti_attr, &body->oa);
1355 obdo_from_la(&repbody->oa, &fti->fti_attr,
1356 OFD_VALID_FLAGS | LA_UID | LA_GID | LA_PROJID);
1358 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SETATTR,
1362 ofd_object_put(tsi->tsi_env, fo);
1365 /* we do not call this before to avoid lu_object_find() in
1366 * ->lvbo_update() holding another reference on the object.
1367 * otherwise concurrent destroy can make the object unavailable
1368 * for 2nd lu_object_find() waiting for the first reference
1369 * to go... deadlock! */
1370 res = ldlm_resource_get(ofd->ofd_namespace, NULL,
1371 &tsi->tsi_resid, LDLM_EXTENT, 0);
1373 ldlm_res_lvbo_update(res, NULL, 0);
1374 ldlm_resource_putref(res);
1381 * Destroy OST orphans.
1383 * This is part of OST_CREATE RPC handling. If there is flag OBD_FL_DELORPHAN
1384 * set then we must destroy possible orphaned objects.
1386 * \param[in] env execution environment
1387 * \param[in] exp OBD export
1388 * \param[in] ofd OFD device
1389 * \param[in] oa obdo structure for reply
1391 * \retval 0 if successful
1392 * \retval negative value on error
1394 static int ofd_orphans_destroy(const struct lu_env *env,
1395 struct obd_export *exp,
1396 struct ofd_device *ofd, struct obdo *oa)
1398 struct ofd_thread_info *info = ofd_info(env);
1399 struct lu_fid *fid = &info->fti_fid;
1400 struct ost_id *oi = &oa->o_oi;
1401 struct ofd_seq *oseq;
1402 u64 seq = ostid_seq(oi);
1403 u64 end_id = ostid_id(oi);
1411 oseq = ofd_seq_get(ofd, seq);
1413 CERROR("%s: Can not find seq for "DOSTID"\n",
1414 ofd_name(ofd), POSTID(oi));
1419 last = ofd_seq_last_oid(oseq);
1422 LASSERT(exp != NULL);
1423 skip_orphan = !!(exp_connect_flags(exp) & OBD_CONNECT_SKIP_ORPHAN);
1425 if (OBD_FAIL_CHECK(OBD_FAIL_OST_NODESTROY))
1428 LCONSOLE(D_INFO, "%s: deleting orphan objects from "DOSTID
1429 " to "DOSTID"\n", ofd_name(ofd), seq, end_id + 1, seq, last);
1431 while (oid > end_id) {
1432 rc = fid_set_id(fid, oid);
1433 if (unlikely(rc != 0))
1436 rc = ofd_destroy_by_fid(env, ofd, fid, 1);
1437 if (rc != 0 && rc != -ENOENT && rc != -ESTALE &&
1438 likely(rc != -EREMCHG && rc != -EINPROGRESS))
1439 /* this is pretty fatal... */
1440 CEMERG("%s: error destroying precreated id "
1442 ofd_name(ofd), PFID(fid), rc);
1446 ofd_seq_last_oid_set(oseq, oid);
1447 /* update last_id on disk periodically so that if we
1448 * restart * we don't need to re-scan all of the just
1449 * deleted objects. */
1450 if ((oid & 511) == 0)
1451 ofd_seq_last_oid_write(env, ofd, oseq);
1455 CDEBUG(D_HA, "%s: after destroy: set last_id to "DOSTID"\n",
1456 ofd_name(ofd), seq, oid);
1460 ofd_seq_last_oid_set(oseq, oid);
1461 rc = ofd_seq_last_oid_write(env, ofd, oseq);
1463 /* don't reuse orphan object, return last used objid */
1464 rc = ostid_set_id(oi, last);
1470 ofd_seq_put(env, oseq);
1475 * OFD request handler for OST_CREATE RPC.
1477 * This is OFD-specific part of request handling. Its main purpose is to
1478 * create new data objects on OST, but it also used to destroy orphans.
1480 * \param[in] tsi target session environment for this request
1482 * \retval 0 if successful
1483 * \retval negative value on error
1485 static int ofd_create_hdl(struct tgt_session_info *tsi)
1487 struct ptlrpc_request *req = tgt_ses_req(tsi);
1488 struct ost_body *repbody;
1489 const struct obdo *oa = &tsi->tsi_ost_body->oa;
1490 struct obdo *rep_oa;
1491 struct obd_export *exp = tsi->tsi_exp;
1492 struct ofd_device *ofd = ofd_exp(exp);
1493 u64 seq = ostid_seq(&oa->o_oi);
1494 u64 oid = ostid_id(&oa->o_oi);
1495 struct ofd_seq *oseq;
1503 if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS))
1506 if (ofd->ofd_no_precreate)
1509 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1510 if (repbody == NULL)
1513 down_read(&ofd->ofd_lastid_rwsem);
1514 /* Currently, for safe, we do not distinguish which LAST_ID is broken,
1515 * we may do that in the future.
1516 * Return -ENOSPC until the LAST_ID rebuilt. */
1517 if (unlikely(ofd->ofd_lastid_rebuilding))
1518 GOTO(out_sem, rc = -ENOSPC);
1520 rep_oa = &repbody->oa;
1521 rep_oa->o_oi = oa->o_oi;
1523 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
1525 CDEBUG(D_INFO, "ofd_create("DOSTID")\n", POSTID(&oa->o_oi));
1527 oseq = ofd_seq_load(tsi->tsi_env, ofd, seq);
1529 CERROR("%s: Can't find FID Sequence %#llx: rc = %ld\n",
1530 ofd_name(ofd), seq, PTR_ERR(oseq));
1531 GOTO(out_sem, rc = -EINVAL);
1534 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
1535 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
1536 if (!ofd_obd(ofd)->obd_recovering ||
1537 oid > ofd_seq_last_oid(oseq)) {
1538 CERROR("%s: recreate objid "DOSTID" > last id %llu"
1539 "\n", ofd_name(ofd), POSTID(&oa->o_oi),
1540 ofd_seq_last_oid(oseq));
1541 GOTO(out_nolock, rc = -EINVAL);
1543 /* Do nothing here, we re-create objects during recovery
1544 * upon write replay, see ofd_preprw_write() */
1545 GOTO(out_nolock, rc = 0);
1547 /* former ofd_handle_precreate */
1548 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
1549 (oa->o_flags & OBD_FL_DELORPHAN)) {
1550 exp->exp_filter_data.fed_lastid_gen = ofd->ofd_lastid_gen;
1552 /* destroy orphans */
1553 if (lustre_msg_get_conn_cnt(tgt_ses_req(tsi)->rq_reqmsg) <
1554 exp->exp_conn_cnt) {
1555 CERROR("%s: dropping old orphan cleanup request\n",
1557 GOTO(out_nolock, rc = 0);
1559 /* This causes inflight precreates to abort and drop lock */
1560 oseq->os_destroys_in_progress = 1;
1561 mutex_lock(&oseq->os_create_lock);
1562 if (!oseq->os_destroys_in_progress) {
1564 "%s:[%llu] destroys_in_progress already cleared\n",
1565 ofd_name(ofd), seq);
1566 rc = ostid_set_id(&rep_oa->o_oi,
1567 ofd_seq_last_oid(oseq));
1570 diff = oid - ofd_seq_last_oid(oseq);
1571 CDEBUG(D_HA, "ofd_last_id() = %llu -> diff = %lld\n",
1572 ofd_seq_last_oid(oseq), diff);
1573 if (-diff > OST_MAX_PRECREATE) {
1574 LCONSOLE(D_INFO, "%s: too large difference between MDS "
1575 "LAST_ID "DFID" (%llu) and OST LAST_ID "DFID" "
1576 "(%llu), trust the OST\n",
1577 ofd_name(ofd), PFID(&oa->o_oi.oi_fid), oid,
1578 PFID(&oseq->os_oi.oi_fid),
1579 ofd_seq_last_oid(oseq));
1581 /* Let MDS know that we are so far ahead. */
1582 rc = ostid_set_id(&rep_oa->o_oi,
1583 ofd_seq_last_oid(oseq) + 1);
1584 } else if (diff < 0) {
1585 rc = ofd_orphans_destroy(tsi->tsi_env, exp,
1587 oseq->os_destroys_in_progress = 0;
1589 /* XXX: Used by MDS for the first time! */
1590 oseq->os_destroys_in_progress = 0;
1593 if (unlikely(exp->exp_filter_data.fed_lastid_gen !=
1594 ofd->ofd_lastid_gen)) {
1595 /* Keep the export ref so we can send the reply. */
1596 ofd_obd_disconnect(class_export_get(exp));
1597 GOTO(out_nolock, rc = -ENOTCONN);
1600 mutex_lock(&oseq->os_create_lock);
1601 if (lustre_msg_get_conn_cnt(tgt_ses_req(tsi)->rq_reqmsg) <
1602 exp->exp_conn_cnt) {
1603 CERROR("%s: dropping old precreate request\n",
1607 /* only precreate if seq is 0, IDIF or normal and also o_id
1608 * must be specfied */
1609 if ((!fid_seq_is_mdt(seq) && !fid_seq_is_norm(seq) &&
1610 !fid_seq_is_idif(seq)) || oid == 0) {
1611 diff = 1; /* shouldn't we create this right now? */
1613 diff = oid - ofd_seq_last_oid(oseq);
1614 /* Do sync create if the seq is about to used up */
1615 if (fid_seq_is_idif(seq) || fid_seq_is_mdt0(seq)) {
1616 if (unlikely(oid >= IDIF_MAX_OID - 1))
1618 } else if (fid_seq_is_norm(seq)) {
1620 LUSTRE_DATA_SEQ_MAX_WIDTH - 1))
1623 CERROR("%s : invalid o_seq "DOSTID"\n",
1624 ofd_name(ofd), POSTID(&oa->o_oi));
1625 GOTO(out, rc = -EINVAL);
1630 CERROR("%s: invalid precreate request for "
1631 DOSTID", last_id %llu. "
1632 "Likely MDS last_id corruption\n",
1633 ofd_name(ofd), POSTID(&oa->o_oi),
1634 ofd_seq_last_oid(oseq));
1635 GOTO(out, rc = -EINVAL);
1640 time64_t enough_time = ktime_get_seconds() + DISK_TIMEOUT;
1646 if (!(oa->o_valid & OBD_MD_FLFLAGS) ||
1647 !(oa->o_flags & OBD_FL_DELORPHAN)) {
1648 /* don't enforce grant during orphan recovery */
1649 granted = tgt_grant_create(tsi->tsi_env,
1650 ofd_obd(ofd)->obd_self_export,
1655 CDEBUG(D_HA, "%s: failed to acquire grant "
1656 "space for precreate (%lld): rc = %d\n",
1657 ofd_name(ofd), diff, rc);
1662 /* This can happen if a new OST is formatted and installed
1663 * in place of an old one at the same index. Instead of
1664 * precreating potentially millions of deleted old objects
1665 * (possibly filling the OST), only precreate the last batch.
1666 * LFSCK will eventually clean up any orphans. LU-14 */
1667 if (diff > 5 * OST_MAX_PRECREATE) {
1668 diff = OST_MAX_PRECREATE / 2;
1669 LCONSOLE_WARN("%s: Too many FIDs to precreate "
1670 "OST replaced or reformatted: "
1671 "LFSCK will clean up",
1674 CDEBUG(D_HA, "%s: precreate FID "DOSTID" is over "
1675 "%u larger than the LAST_ID "DOSTID", only "
1676 "precreating the last %lld objects.\n",
1677 ofd_name(ofd), POSTID(&oa->o_oi),
1678 5 * OST_MAX_PRECREATE,
1679 POSTID(&oseq->os_oi), diff);
1680 ofd_seq_last_oid_set(oseq, ostid_id(&oa->o_oi) - diff);
1684 next_id = ofd_seq_last_oid(oseq) + 1;
1685 count = ofd_precreate_batch(ofd, (int)diff);
1687 CDEBUG(D_HA, "%s: reserve %d objects in group %#llx"
1688 " at %llu\n", ofd_name(ofd),
1689 count, seq, next_id);
1691 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
1692 && ktime_get_seconds() > enough_time) {
1693 CDEBUG(D_HA, "%s: Slow creates, %d/%lld objects"
1694 " created at a rate of %d/s\n",
1695 ofd_name(ofd), created, diff + created,
1696 created / DISK_TIMEOUT);
1700 rc = ofd_precreate_objects(tsi->tsi_env, ofd, next_id,
1701 oseq, count, sync_trans);
1705 } else if (rc < 0) {
1711 lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
1712 LCONSOLE_WARN("%s: can't create the same count of"
1713 " objects when replaying the request"
1714 " (diff is %lld). see LU-4621\n",
1715 ofd_name(ofd), diff);
1718 /* some objects got created, we can return
1719 * them, even if last creation failed */
1722 CERROR("%s: unable to precreate: rc = %d\n",
1725 if (!(oa->o_valid & OBD_MD_FLFLAGS) ||
1726 !(oa->o_flags & OBD_FL_DELORPHAN)) {
1727 tgt_grant_commit(ofd_obd(ofd)->obd_self_export,
1732 rc2 = ostid_set_id(&rep_oa->o_oi, ofd_seq_last_oid(oseq));
1736 ofd_counter_incr(exp, LPROC_OFD_STATS_CREATE,
1738 if (unlikely(!oseq->os_last_id_synced))
1739 oseq->os_last_id_synced = 1;
1741 mutex_unlock(&oseq->os_create_lock);
1744 rep_oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP;
1745 ofd_seq_put(tsi->tsi_env, oseq);
1748 up_read(&ofd->ofd_lastid_rwsem);
1753 * OFD request handler for OST_DESTROY RPC.
1755 * This is OFD-specific part of request handling. It destroys data objects
1756 * related to destroyed object on MDT.
1758 * \param[in] tsi target session environment for this request
1760 * \retval 0 if successful
1761 * \retval negative value on error
1763 static int ofd_destroy_hdl(struct tgt_session_info *tsi)
1765 const struct ost_body *body = tsi->tsi_ost_body;
1766 struct ost_body *repbody;
1767 struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
1768 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1769 struct lu_fid *fid = &fti->fti_fid;
1776 if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS))
1779 /* This is old case for clients before Lustre 2.4 */
1780 /* If there's a DLM request, cancel the locks mentioned in it */
1781 if (req_capsule_field_present(tsi->tsi_pill, &RMF_DLM_REQ,
1783 struct ldlm_request *dlm;
1785 dlm = req_capsule_client_get(tsi->tsi_pill, &RMF_DLM_REQ);
1788 ldlm_request_cancel(tgt_ses_req(tsi), dlm, 0, LATF_SKIP);
1791 *fid = body->oa.o_oi.oi_fid;
1792 oid = ostid_id(&body->oa.o_oi);
1795 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1797 /* check that o_misc makes sense */
1798 if (body->oa.o_valid & OBD_MD_FLOBJCOUNT)
1799 count = body->oa.o_misc;
1801 count = 1; /* default case - single destroy */
1803 CDEBUG(D_HA, "%s: Destroy object "DOSTID" count %d\n", ofd_name(ofd),
1804 POSTID(&body->oa.o_oi), count);
1809 lrc = ofd_destroy_by_fid(tsi->tsi_env, ofd, fid, 0);
1810 if (lrc == -ENOENT) {
1812 "%s: destroying non-existent object "DFID"\n",
1813 ofd_name(ofd), PFID(fid));
1814 /* rewrite rc with -ENOENT only if it is 0 */
1817 } else if (lrc != 0) {
1818 CERROR("%s: error destroying object "DFID": %d\n",
1819 ofd_name(ofd), PFID(fid), lrc);
1825 lrc = fid_set_id(fid, oid);
1826 if (unlikely(lrc != 0 && count > 0))
1827 GOTO(out, rc = lrc);
1830 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_DESTROY,
1836 fid_to_ostid(fid, &repbody->oa.o_oi);
1841 * OFD request handler for OST_STATFS RPC.
1843 * This function gets statfs data from storage as part of request
1846 * \param[in] tsi target session environment for this request
1848 * \retval 0 if successful
1849 * \retval negative value on error
1851 static int ofd_statfs_hdl(struct tgt_session_info *tsi)
1853 struct obd_statfs *osfs;
1858 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_STATFS_DELAY, 10);
1860 osfs = req_capsule_server_get(tsi->tsi_pill, &RMF_OBD_STATFS);
1862 rc = ofd_statfs(tsi->tsi_env, tsi->tsi_exp, osfs,
1863 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS, 0);
1865 CERROR("%s: statfs failed: rc = %d\n",
1866 tgt_name(tsi->tsi_tgt), rc);
1868 if (OBD_FAIL_CHECK(OBD_FAIL_OST_STATFS_EINPROGRESS))
1871 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_STATFS,
1878 * OFD request handler for OST_SYNC RPC.
1880 * Sync object data or all filesystem data to the disk and pack the
1883 * \param[in] tsi target session environment for this request
1885 * \retval 0 if successful
1886 * \retval negative value on error
1888 static int ofd_sync_hdl(struct tgt_session_info *tsi)
1890 struct ost_body *body = tsi->tsi_ost_body;
1891 struct ost_body *repbody;
1892 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1893 struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
1894 struct ofd_object *fo = NULL;
1899 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1901 /* if no objid is specified, it means "sync whole filesystem" */
1902 if (!fid_is_zero(&tsi->tsi_fid)) {
1903 fo = ofd_object_find_exists(tsi->tsi_env, ofd, &tsi->tsi_fid);
1905 RETURN(PTR_ERR(fo));
1908 rc = tgt_sync(tsi->tsi_env, tsi->tsi_tgt,
1909 fo != NULL ? ofd_object_child(fo) : NULL,
1910 repbody->oa.o_size, repbody->oa.o_blocks);
1914 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SYNC,
1919 repbody->oa.o_oi = body->oa.o_oi;
1920 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1922 rc = ofd_attr_get(tsi->tsi_env, fo, &fti->fti_attr);
1924 obdo_from_la(&repbody->oa, &fti->fti_attr,
1927 /* don't return rc from getattr */
1932 ofd_object_put(tsi->tsi_env, fo);
1937 * OFD request handler for OST_PUNCH RPC.
1939 * This is part of request processing. Validate request fields,
1940 * punch (truncate) the given OFD object and pack reply.
1942 * \param[in] tsi target session environment for this request
1944 * \retval 0 if successful
1945 * \retval negative value on error
1947 static int ofd_punch_hdl(struct tgt_session_info *tsi)
1949 const struct obdo *oa = &tsi->tsi_ost_body->oa;
1950 struct ost_body *repbody;
1951 struct ofd_thread_info *info = tsi2ofd_info(tsi);
1952 struct ldlm_namespace *ns = tsi->tsi_tgt->lut_obd->obd_namespace;
1953 struct ldlm_resource *res;
1954 struct ofd_object *fo;
1956 struct lustre_handle lh = { 0, };
1963 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_PAUSE_PUNCH, cfs_fail_val);
1965 /* check that we do support OBD_CONNECT_TRUNCLOCK. */
1966 BUILD_BUG_ON(!(OST_CONNECT_SUPPORTED & OBD_CONNECT_TRUNCLOCK));
1968 if ((oa->o_valid & (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS)) !=
1969 (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS))
1970 RETURN(err_serious(-EPROTO));
1972 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1973 if (repbody == NULL)
1974 RETURN(err_serious(-ENOMEM));
1976 /* punch start,end are passed in o_size,o_blocks throught wire */
1980 if (end != OBD_OBJECT_EOF) /* Only truncate is supported */
1983 /* standard truncate optimization: if file body is completely
1984 * destroyed, don't send data back to the server. */
1986 flags |= LDLM_FL_AST_DISCARD_DATA;
1988 repbody->oa.o_oi = oa->o_oi;
1989 repbody->oa.o_valid = OBD_MD_FLID;
1991 srvlock = oa->o_valid & OBD_MD_FLFLAGS &&
1992 oa->o_flags & OBD_FL_SRVLOCK;
1995 rc = tgt_extent_lock(tsi->tsi_env, ns, &tsi->tsi_resid, start,
1996 end, &lh, LCK_PW, &flags);
2001 CDEBUG(D_INODE, "calling punch for object "DFID", valid = %#llx"
2002 ", start = %lld, end = %lld\n", PFID(&tsi->tsi_fid),
2003 oa->o_valid, start, end);
2005 fo = ofd_object_find_exists(tsi->tsi_env, ofd_exp(tsi->tsi_exp),
2008 GOTO(out, rc = PTR_ERR(fo));
2010 la_from_obdo(&info->fti_attr, oa,
2011 OBD_MD_FLMTIME | OBD_MD_FLATIME | OBD_MD_FLCTIME);
2012 info->fti_attr.la_size = start;
2013 info->fti_attr.la_valid |= LA_SIZE;
2015 rc = ofd_object_punch(tsi->tsi_env, fo, start, end, &info->fti_attr,
2020 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_PUNCH,
2024 ofd_object_put(tsi->tsi_env, fo);
2027 tgt_extent_unlock(&lh, LCK_PW);
2029 /* we do not call this before to avoid lu_object_find() in
2030 * ->lvbo_update() holding another reference on the object.
2031 * otherwise concurrent destroy can make the object unavailable
2032 * for 2nd lu_object_find() waiting for the first reference
2033 * to go... deadlock! */
2034 res = ldlm_resource_get(ns, NULL, &tsi->tsi_resid,
2037 struct ost_lvb *res_lvb;
2039 ldlm_res_lvbo_update(res, NULL, 0);
2040 res_lvb = res->lr_lvb_data;
2041 repbody->oa.o_valid |= OBD_MD_FLBLOCKS;
2042 repbody->oa.o_blocks = res_lvb->lvb_blocks;
2043 ldlm_resource_putref(res);
2049 static int ofd_ladvise_prefetch(const struct lu_env *env,
2050 struct ofd_object *fo,
2051 struct niobuf_local *lnb,
2052 __u64 start, __u64 end, enum dt_bufs_type dbt)
2054 struct ofd_thread_info *info = ofd_info(env);
2055 pgoff_t start_index, end_index, pages;
2056 struct niobuf_remote rnb;
2057 unsigned long nr_local;
2063 ofd_read_lock(env, fo);
2064 if (!ofd_object_exists(fo))
2065 GOTO(out_unlock, rc = -ENOENT);
2067 rc = ofd_attr_get(env, fo, &info->fti_attr);
2069 GOTO(out_unlock, rc);
2071 if (end > info->fti_attr.la_size)
2072 end = info->fti_attr.la_size;
2075 GOTO(out_unlock, rc);
2077 /* We need page aligned offset and length */
2078 start_index = start >> PAGE_SHIFT;
2079 end_index = (end - 1) >> PAGE_SHIFT;
2080 pages = end_index - start_index + 1;
2082 nr_local = pages <= PTLRPC_MAX_BRW_PAGES ? pages :
2083 PTLRPC_MAX_BRW_PAGES;
2084 rnb.rnb_offset = start_index << PAGE_SHIFT;
2085 rnb.rnb_len = nr_local << PAGE_SHIFT;
2086 rc = dt_bufs_get(env, ofd_object_child(fo), &rnb, lnb,
2087 PTLRPC_MAX_BRW_PAGES, dbt);
2088 if (unlikely(rc < 0))
2091 rc = dt_read_prep(env, ofd_object_child(fo), lnb, nr_local);
2092 dt_bufs_put(env, ofd_object_child(fo), lnb, nr_local);
2095 start_index += nr_local;
2100 ofd_read_unlock(env, fo);
2105 * OFD request handler for OST_LADVISE RPC.
2107 * Tune cache or perfetch policies according to advices.
2109 * \param[in] tsi target session environment for this request
2111 * \retval 0 if successful
2112 * \retval negative errno on error
2114 static int ofd_ladvise_hdl(struct tgt_session_info *tsi)
2116 struct ptlrpc_request *req = tgt_ses_req(tsi);
2117 struct obd_export *exp = tsi->tsi_exp;
2118 struct ofd_device *ofd = ofd_exp(exp);
2119 struct ost_body *body, *repbody;
2120 struct ofd_thread_info *info;
2121 struct ofd_object *fo;
2122 struct ptlrpc_thread *svc_thread = req->rq_svc_thread;
2123 const struct lu_env *env = svc_thread->t_env;
2124 struct tgt_thread_big_cache *tbc = svc_thread->t_data;
2125 enum dt_bufs_type dbt = DT_BUFS_TYPE_READAHEAD;
2126 struct lu_ladvise *ladvise;
2128 struct ladvise_hdr *ladvise_hdr;
2129 struct obd_ioobj ioo;
2130 struct lustre_handle lockh = { 0 };
2133 struct dt_object *dob;
2139 CFS_FAIL_TIMEOUT(OBD_FAIL_OST_LADVISE_PAUSE, cfs_fail_val);
2140 body = tsi->tsi_ost_body;
2142 if ((body->oa.o_valid & OBD_MD_FLID) != OBD_MD_FLID)
2143 RETURN(err_serious(-EPROTO));
2145 ladvise_hdr = req_capsule_client_get(tsi->tsi_pill,
2146 &RMF_OST_LADVISE_HDR);
2147 if (ladvise_hdr == NULL)
2148 RETURN(err_serious(-EPROTO));
2150 if (ladvise_hdr->lah_magic != LADVISE_MAGIC ||
2151 ladvise_hdr->lah_count < 1)
2152 RETURN(err_serious(-EPROTO));
2154 if ((ladvise_hdr->lah_flags & (~LF_MASK)) != 0)
2155 RETURN(err_serious(-EPROTO));
2157 ladvise = req_capsule_client_get(tsi->tsi_pill, &RMF_OST_LADVISE);
2158 if (ladvise == NULL)
2159 RETURN(err_serious(-EPROTO));
2161 num_advise = req_capsule_get_size(&req->rq_pill,
2162 &RMF_OST_LADVISE, RCL_CLIENT) /
2164 if (num_advise < ladvise_hdr->lah_count)
2165 RETURN(err_serious(-EPROTO));
2167 repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
2168 repbody->oa = body->oa;
2170 info = ofd_info_init(env, exp);
2172 rc = ostid_to_fid(&info->fti_fid, &body->oa.o_oi,
2173 ofd->ofd_lut.lut_lsd.lsd_osd_index);
2177 fo = ofd_object_find(env, ofd, &info->fti_fid);
2182 LASSERT(fo != NULL);
2183 dob = ofd_object_child(fo);
2185 if (ptlrpc_connection_is_local(exp->exp_connection))
2186 dbt |= DT_BUFS_TYPE_LOCAL;
2188 for (i = 0; i < num_advise; i++, ladvise++) {
2189 start = ladvise->lla_start;
2190 end = ladvise->lla_end;
2192 rc = err_serious(-EPROTO);
2196 /* Handle different advice types */
2197 switch (ladvise->lla_advice) {
2201 case LU_LADVISE_WILLREAD:
2205 ioo.ioo_oid = body->oa.o_oi;
2207 rc = tgt_extent_lock(env, exp->exp_obd->obd_namespace,
2208 &tsi->tsi_resid, start, end - 1,
2209 &lockh, LCK_PR, &flags);
2213 req->rq_status = ofd_ladvise_prefetch(env, fo,
2216 tgt_extent_unlock(&lockh, LCK_PR);
2218 case LU_LADVISE_DONTNEED:
2219 rc = dt_ladvise(env, dob, ladvise->lla_start,
2220 ladvise->lla_end, LU_LADVISE_DONTNEED);
2227 ofd_object_put(env, fo);
2228 req->rq_status = rc;
2233 * OFD request handler for OST_QUOTACTL RPC.
2235 * This is part of request processing to validate incoming request fields,
2236 * get the requested data from OSD and pack reply.
2238 * \param[in] tsi target session environment for this request
2240 * \retval 0 if successful
2241 * \retval negative value on error
2243 static int ofd_quotactl(struct tgt_session_info *tsi)
2245 struct obd_quotactl *oqctl, *repoqc;
2246 struct lu_nodemap *nodemap;
2252 oqctl = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_QUOTACTL);
2254 RETURN(err_serious(-EPROTO));
2256 repoqc = req_capsule_server_get(tsi->tsi_pill, &RMF_OBD_QUOTACTL);
2258 RETURN(err_serious(-ENOMEM));
2262 nodemap = nodemap_get_from_exp(tsi->tsi_exp);
2263 if (IS_ERR(nodemap))
2264 RETURN(PTR_ERR(nodemap));
2267 if (oqctl->qc_type == USRQUOTA)
2268 id = nodemap_map_id(nodemap, NODEMAP_UID,
2269 NODEMAP_CLIENT_TO_FS,
2271 else if (oqctl->qc_type == GRPQUOTA)
2272 id = nodemap_map_id(nodemap, NODEMAP_GID,
2273 NODEMAP_CLIENT_TO_FS,
2276 nodemap_putref(nodemap);
2278 if (repoqc->qc_id != id)
2279 swap(repoqc->qc_id, id);
2281 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom, repoqc);
2283 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_QUOTACTL,
2286 if (repoqc->qc_id != id)
2287 swap(repoqc->qc_id, id);
2293 * Calculate the amount of time for lock prolongation.
2295 * This is helper for ofd_prolong_extent_locks() function to get
2296 * the timeout extra time.
2298 * \param[in] req current request
2300 * \retval amount of time to extend the timeout with
2302 static inline time64_t prolong_timeout(struct ptlrpc_request *req)
2304 struct ptlrpc_service_part *svcpt = req->rq_rqbd->rqbd_svcpt;
2305 time64_t req_timeout;
2308 return obd_timeout / 2;
2310 req_timeout = req->rq_deadline - req->rq_arrival_time.tv_sec;
2311 return max_t(time64_t, at_est2timeout(at_get(&svcpt->scp_at_estimate)),
2316 * Prolong lock timeout for the given extent.
2318 * This function finds all locks related with incoming request and
2319 * prolongs their timeout.
2321 * If a client is holding a lock for a long time while it sends
2322 * read or write RPCs to the OST for the object under this lock,
2323 * then we don't want the OST to evict the client. Otherwise,
2324 * if the network or disk is very busy then the client may not
2325 * be able to make any progress to clear out dirty pages under
2326 * the lock and the application will fail.
2328 * Every time a Bulk Read/Write (BRW) request arrives for the object
2329 * covered by the lock, extend the timeout on that lock. The RPC should
2330 * contain a lock handle for the lock it is using, but this
2331 * isn't handled correctly by all client versions, and the
2332 * request may cover multiple locks.
2334 * \param[in] tsi target session environment for this request
2335 * \param[in] data struct of data to prolong locks
2338 static void ofd_prolong_extent_locks(struct tgt_session_info *tsi,
2339 struct ldlm_prolong_args *data)
2341 struct obdo *oa = &tsi->tsi_ost_body->oa;
2342 struct ldlm_lock *lock;
2346 data->lpa_timeout = prolong_timeout(tgt_ses_req(tsi));
2347 data->lpa_export = tsi->tsi_exp;
2348 data->lpa_resid = tsi->tsi_resid;
2350 CDEBUG(D_RPCTRACE, "Prolong locks for req %p with x%llu"
2351 " ext(%llu->%llu)\n", tgt_ses_req(tsi),
2352 tgt_ses_req(tsi)->rq_xid, data->lpa_extent.start,
2353 data->lpa_extent.end);
2355 if (oa->o_valid & OBD_MD_FLHANDLE) {
2356 /* mostly a request should be covered by only one lock, try
2358 lock = ldlm_handle2lock(&oa->o_handle);
2360 /* Fast path to check if the lock covers the whole IO
2361 * region exclusively. */
2362 if (ldlm_extent_contain(&lock->l_policy_data.l_extent,
2363 &data->lpa_extent)) {
2365 LASSERT(lock->l_export == data->lpa_export);
2366 ldlm_lock_prolong_one(lock, data);
2367 LDLM_LOCK_PUT(lock);
2368 if (data->lpa_locks_cnt > 0)
2370 /* The lock was destroyed probably lets try
2373 lock->l_last_used = ktime_get();
2374 LDLM_LOCK_PUT(lock);
2379 ldlm_resource_prolong(data);
2384 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_match for OFD RW requests.
2386 * Determine if \a lock and the lock from request \a req are equivalent
2387 * by comparing their resource names, modes, and extents.
2389 * It is used to give priority to read and write RPCs being done
2390 * under this lock so that the client can drop the contended
2391 * lock more quickly and let other clients use it. This improves
2392 * overall performance in the case where the first client gets a
2393 * very large lock extent that prevents other clients from
2394 * submitting their writes.
2396 * \param[in] req ptlrpc_request being processed
2397 * \param[in] lock contended lock to match
2399 * \retval 1 if lock is matched
2400 * \retval 0 otherwise
2402 static int ofd_rw_hpreq_lock_match(struct ptlrpc_request *req,
2403 struct ldlm_lock *lock)
2405 struct niobuf_remote *rnb;
2406 struct obd_ioobj *ioo;
2407 enum ldlm_mode mode;
2408 struct ldlm_extent ext;
2409 __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
2413 ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
2414 LASSERT(ioo != NULL);
2416 rnb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
2417 LASSERT(rnb != NULL);
2419 ext.start = rnb->rnb_offset;
2420 rnb += ioo->ioo_bufcnt - 1;
2421 ext.end = rnb->rnb_offset + rnb->rnb_len - 1;
2423 LASSERT(lock->l_resource != NULL);
2424 if (!ostid_res_name_eq(&ioo->ioo_oid, &lock->l_resource->lr_name))
2427 /* a bulk write can only hold a reference on a PW extent lock
2430 mode = LCK_PW | LCK_GROUP;
2431 if (opc == OST_READ)
2432 /* whereas a bulk read can be protected by either a PR or PW
2436 if (!(lock->l_granted_mode & mode))
2439 RETURN(ldlm_extent_overlap(&lock->l_policy_data.l_extent, &ext));
2443 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_check for OFD RW requests.
2445 * Check for whether the given PTLRPC request (\a req) is blocking
2446 * an LDLM lock cancel. Also checks whether the request is covered by an LDLM
2449 * \param[in] req the incoming request
2451 * \retval 1 if \a req is blocking an LDLM lock cancel
2452 * \retval 0 if it is not
2453 * \retval -ESTALE if lock is not found
2455 static int ofd_rw_hpreq_check(struct ptlrpc_request *req)
2457 struct tgt_session_info *tsi;
2458 struct obd_ioobj *ioo;
2459 struct niobuf_remote *rnb;
2461 struct ldlm_prolong_args pa = { 0 };
2465 /* Don't use tgt_ses_info() to get session info, because lock_match()
2466 * can be called while request has no processing thread yet. */
2467 tsi = lu_context_key_get(&req->rq_session, &tgt_session_key);
2470 * Use LASSERT below because malformed RPCs should have
2471 * been filtered out in tgt_hpreq_handler().
2473 opc = lustre_msg_get_opc(req->rq_reqmsg);
2474 LASSERT(opc == OST_READ || opc == OST_WRITE);
2476 ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
2477 LASSERT(ioo != NULL);
2479 rnb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
2480 LASSERT(rnb != NULL);
2481 LASSERT(!(rnb->rnb_flags & OBD_BRW_SRVLOCK));
2483 pa.lpa_mode = LCK_PW | LCK_GROUP;
2484 if (opc == OST_READ)
2485 pa.lpa_mode |= LCK_PR;
2487 pa.lpa_extent.start = rnb->rnb_offset;
2488 rnb += ioo->ioo_bufcnt - 1;
2489 pa.lpa_extent.end = rnb->rnb_offset + rnb->rnb_len - 1;
2491 DEBUG_REQ(D_RPCTRACE, req,
2492 "%s %s: refresh rw locks for "DFID" (%llu->%llu)",
2493 tgt_name(tsi->tsi_tgt), current->comm, PFID(&tsi->tsi_fid),
2494 pa.lpa_extent.start, pa.lpa_extent.end);
2496 ofd_prolong_extent_locks(tsi, &pa);
2498 CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p\n",
2499 tgt_name(tsi->tsi_tgt), pa.lpa_blocks_cnt, req);
2501 if (pa.lpa_blocks_cnt > 0)
2504 RETURN(pa.lpa_locks_cnt > 0 ? 0 : -ESTALE);
2508 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_fini for OFD RW requests.
2510 * Called after the request has been handled. It refreshes lock timeout again
2511 * so that client has more time to send lock cancel RPC.
2513 * \param[in] req request which is being processed.
2515 static void ofd_rw_hpreq_fini(struct ptlrpc_request *req)
2517 ofd_rw_hpreq_check(req);
2521 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_match for OST_PUNCH request.
2523 * This function checks if the given lock is the same by its resname, mode
2524 * and extent as one taken from the request.
2525 * It is used to give priority to punch/truncate RPCs that might lead to
2526 * the fastest release of that lock when a lock is contended.
2528 * \param[in] req ptlrpc_request being processed
2529 * \param[in] lock contended lock to match
2531 * \retval 1 if lock is matched
2532 * \retval 0 otherwise
2534 static int ofd_punch_hpreq_lock_match(struct ptlrpc_request *req,
2535 struct ldlm_lock *lock)
2537 struct tgt_session_info *tsi;
2539 struct ldlm_extent ext;
2543 /* Don't use tgt_ses_info() to get session info, because lock_match()
2544 * can be called while request has no processing thread yet. */
2545 tsi = lu_context_key_get(&req->rq_session, &tgt_session_key);
2548 * Use LASSERT below because malformed RPCs should have
2549 * been filtered out in tgt_hpreq_handler().
2551 LASSERT(tsi->tsi_ost_body != NULL);
2552 if (tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLHANDLE &&
2553 tsi->tsi_ost_body->oa.o_handle.cookie == lock->l_handle.h_cookie)
2556 oa = &tsi->tsi_ost_body->oa;
2557 ext.start = oa->o_size;
2558 ext.end = oa->o_blocks;
2560 LASSERT(lock->l_resource != NULL);
2561 if (!ostid_res_name_eq(&oa->o_oi, &lock->l_resource->lr_name))
2564 if (!(lock->l_granted_mode & (LCK_PW | LCK_GROUP)))
2567 RETURN(ldlm_extent_overlap(&lock->l_policy_data.l_extent, &ext));
2571 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_check for OST_PUNCH request.
2573 * High-priority queue request check for whether the given punch request
2574 * (\a req) is blocking an LDLM lock cancel. Also checks whether the request is
2575 * covered by an LDLM lock.
2579 * \param[in] req the incoming request
2581 * \retval 1 if \a req is blocking an LDLM lock cancel
2582 * \retval 0 if it is not
2583 * \retval -ESTALE if lock is not found
2585 static int ofd_punch_hpreq_check(struct ptlrpc_request *req)
2587 struct tgt_session_info *tsi;
2589 struct ldlm_prolong_args pa = { 0 };
2593 /* Don't use tgt_ses_info() to get session info, because lock_match()
2594 * can be called while request has no processing thread yet. */
2595 tsi = lu_context_key_get(&req->rq_session, &tgt_session_key);
2596 LASSERT(tsi != NULL);
2597 oa = &tsi->tsi_ost_body->oa;
2599 LASSERT(!(oa->o_valid & OBD_MD_FLFLAGS &&
2600 oa->o_flags & OBD_FL_SRVLOCK));
2602 pa.lpa_mode = LCK_PW | LCK_GROUP;
2603 pa.lpa_extent.start = oa->o_size;
2604 pa.lpa_extent.end = oa->o_blocks;
2607 "%s: refresh locks: %llu/%llu (%llu->%llu)\n",
2608 tgt_name(tsi->tsi_tgt), tsi->tsi_resid.name[0],
2609 tsi->tsi_resid.name[1], pa.lpa_extent.start, pa.lpa_extent.end);
2611 ofd_prolong_extent_locks(tsi, &pa);
2613 CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p.\n",
2614 tgt_name(tsi->tsi_tgt), pa.lpa_blocks_cnt, req);
2616 if (pa.lpa_blocks_cnt > 0)
2619 RETURN(pa.lpa_locks_cnt > 0 ? 0 : -ESTALE);
2623 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_fini for OST_PUNCH request.
2625 * Called after the request has been handled. It refreshes lock timeout again
2626 * so that client has more time to send lock cancel RPC.
2628 * \param[in] req request which is being processed.
2630 static void ofd_punch_hpreq_fini(struct ptlrpc_request *req)
2632 ofd_punch_hpreq_check(req);
2635 static struct ptlrpc_hpreq_ops ofd_hpreq_rw = {
2636 .hpreq_lock_match = ofd_rw_hpreq_lock_match,
2637 .hpreq_check = ofd_rw_hpreq_check,
2638 .hpreq_fini = ofd_rw_hpreq_fini
2641 static struct ptlrpc_hpreq_ops ofd_hpreq_punch = {
2642 .hpreq_lock_match = ofd_punch_hpreq_lock_match,
2643 .hpreq_check = ofd_punch_hpreq_check,
2644 .hpreq_fini = ofd_punch_hpreq_fini
2648 * Assign high priority operations to an IO request.
2650 * Check if the incoming request is a candidate for
2651 * high-priority processing. If it is, assign it a high
2652 * priority operations table.
2654 * \param[in] tsi target session environment for this request
2656 static void ofd_hp_brw(struct tgt_session_info *tsi)
2658 struct niobuf_remote *rnb;
2659 struct obd_ioobj *ioo;
2663 ioo = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_IOOBJ);
2664 LASSERT(ioo != NULL); /* must exist after request preprocessing */
2665 if (ioo->ioo_bufcnt > 0) {
2666 rnb = req_capsule_client_get(tsi->tsi_pill, &RMF_NIOBUF_REMOTE);
2667 LASSERT(rnb != NULL); /* must exist after request preprocessing */
2669 /* no high priority if server lock is needed */
2670 if (rnb->rnb_flags & OBD_BRW_SRVLOCK ||
2671 (lustre_msg_get_flags(tgt_ses_req(tsi)->rq_reqmsg)
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) ||
2693 tgt_conn_flags(tsi) & OBD_CONNECT_MDS ||
2694 lustre_msg_get_flags(tgt_ses_req(tsi)->rq_reqmsg) & MSG_REPLAY)
2696 tgt_ses_req(tsi)->rq_ops = &ofd_hpreq_punch;
2699 #define OBD_FAIL_OST_READ_NET OBD_FAIL_OST_BRW_NET
2700 #define OBD_FAIL_OST_WRITE_NET OBD_FAIL_OST_BRW_NET
2701 #define OST_BRW_READ OST_READ
2702 #define OST_BRW_WRITE OST_WRITE
2705 * Table of OFD-specific request handlers
2707 * This table contains all opcodes accepted by OFD and
2708 * specifies handlers for them. The tgt_request_handler()
2709 * uses such table from each target to process incoming
2712 static struct tgt_handler ofd_tgt_handlers[] = {
2713 TGT_RPC_HANDLER(OST_FIRST_OPC,
2714 0, OST_CONNECT, tgt_connect,
2715 &RQF_CONNECT, LUSTRE_OBD_VERSION),
2716 TGT_RPC_HANDLER(OST_FIRST_OPC,
2717 0, OST_DISCONNECT, tgt_disconnect,
2718 &RQF_OST_DISCONNECT, LUSTRE_OBD_VERSION),
2719 TGT_RPC_HANDLER(OST_FIRST_OPC,
2720 0, OST_SET_INFO, ofd_set_info_hdl,
2721 &RQF_OBD_SET_INFO, LUSTRE_OST_VERSION),
2722 TGT_OST_HDL(0, OST_GET_INFO, ofd_get_info_hdl),
2723 TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_GETATTR, ofd_getattr_hdl),
2724 TGT_OST_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE,
2725 OST_SETATTR, ofd_setattr_hdl),
2726 TGT_OST_HDL(HAS_REPLY | IS_MUTABLE,
2727 OST_CREATE, ofd_create_hdl),
2728 TGT_OST_HDL(HAS_REPLY | IS_MUTABLE,
2729 OST_DESTROY, ofd_destroy_hdl),
2730 TGT_OST_HDL(HAS_REPLY, OST_STATFS, ofd_statfs_hdl),
2731 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY, OST_BRW_READ, tgt_brw_read,
2733 /* don't set CORPUS flag for brw_write because -ENOENT may be valid case */
2734 TGT_OST_HDL_HP(HAS_BODY | IS_MUTABLE, OST_BRW_WRITE, tgt_brw_write,
2736 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY | IS_MUTABLE,
2737 OST_PUNCH, ofd_punch_hdl,
2739 TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_SYNC, ofd_sync_hdl),
2740 TGT_OST_HDL(HAS_REPLY, OST_QUOTACTL, ofd_quotactl),
2741 TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_LADVISE, ofd_ladvise_hdl),
2744 static struct tgt_opc_slice ofd_common_slice[] = {
2746 .tos_opc_start = OST_FIRST_OPC,
2747 .tos_opc_end = OST_LAST_OPC,
2748 .tos_hs = ofd_tgt_handlers
2751 .tos_opc_start = OBD_FIRST_OPC,
2752 .tos_opc_end = OBD_LAST_OPC,
2753 .tos_hs = tgt_obd_handlers
2756 .tos_opc_start = LDLM_FIRST_OPC,
2757 .tos_opc_end = LDLM_LAST_OPC,
2758 .tos_hs = tgt_dlm_handlers
2761 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
2762 .tos_opc_end = OUT_UPDATE_LAST_OPC,
2763 .tos_hs = tgt_out_handlers
2766 .tos_opc_start = SEQ_FIRST_OPC,
2767 .tos_opc_end = SEQ_LAST_OPC,
2768 .tos_hs = seq_handlers
2771 .tos_opc_start = LFSCK_FIRST_OPC,
2772 .tos_opc_end = LFSCK_LAST_OPC,
2773 .tos_hs = tgt_lfsck_handlers
2776 .tos_opc_start = SEC_FIRST_OPC,
2777 .tos_opc_end = SEC_LAST_OPC,
2778 .tos_hs = tgt_sec_ctx_handlers
2785 /* context key constructor/destructor: ofd_key_init(), ofd_key_fini() */
2786 LU_KEY_INIT_FINI(ofd, struct ofd_thread_info);
2789 * Implementation of lu_context_key::lct_key_exit.
2791 * Optional method called on lu_context_exit() for all allocated
2793 * It is used in OFD to sanitize context values which may be re-used
2794 * during another request processing by the same thread.
2796 * \param[in] ctx execution context
2797 * \param[in] key context key
2798 * \param[in] data ofd_thread_info
2800 static void ofd_key_exit(const struct lu_context *ctx,
2801 struct lu_context_key *key, void *data)
2803 struct ofd_thread_info *info = data;
2805 info->fti_env = NULL;
2806 info->fti_exp = NULL;
2809 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 tg_grants_data *tgd = &m->ofd_lut.lut_tgd;
2844 struct nm_config_file *nodemap_config;
2845 struct obd_device_target *obt;
2851 obd = class_name2obd(dev);
2853 CERROR("Cannot find obd with name %s\n", dev);
2857 rc = lu_env_refill((struct lu_env *)env);
2862 obt->obt_magic = OBT_MAGIC;
2864 spin_lock_init(&m->ofd_flags_lock);
2865 m->ofd_raid_degraded = 0;
2866 m->ofd_checksum_t10pi_enforce = 0;
2867 m->ofd_sync_journal = 0;
2869 m->ofd_soft_sync_limit = OFD_SOFT_SYNC_LIMIT_DEFAULT;
2871 m->ofd_seq_count = 0;
2872 init_waitqueue_head(&m->ofd_inconsistency_thread.t_ctl_waitq);
2873 INIT_LIST_HEAD(&m->ofd_inconsistency_list);
2874 spin_lock_init(&m->ofd_inconsistency_lock);
2876 spin_lock_init(&m->ofd_batch_lock);
2877 init_rwsem(&m->ofd_lastid_rwsem);
2879 m->ofd_dt_dev.dd_lu_dev.ld_ops = &ofd_lu_ops;
2880 m->ofd_dt_dev.dd_lu_dev.ld_obd = obd;
2881 /* set this lu_device to obd, because error handling need it */
2882 obd->obd_lu_dev = &m->ofd_dt_dev.dd_lu_dev;
2884 /* No connection accepted until configurations will finish */
2885 spin_lock(&obd->obd_dev_lock);
2886 obd->obd_no_conn = 1;
2887 spin_unlock(&obd->obd_dev_lock);
2888 obd->obd_replayable = 1;
2889 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
2890 char *str = lustre_cfg_string(cfg, 4);
2892 if (strchr(str, 'n')) {
2893 CWARN("%s: recovery disabled\n", obd->obd_name);
2894 obd->obd_replayable = 0;
2898 info = ofd_info_init(env, NULL);
2902 rc = ofd_stack_init(env, m, cfg, &lmd_flags);
2904 CERROR("%s: can't init device stack, rc %d\n",
2909 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 14, 53, 0)
2910 ofd_procfs_add_brw_stats_symlink(m);
2913 snprintf(info->fti_u.name, sizeof(info->fti_u.name), "%s-%s",
2914 "filter"/*LUSTRE_OST_NAME*/, obd->obd_uuid.uuid);
2915 m->ofd_namespace = ldlm_namespace_new(obd, info->fti_u.name,
2916 LDLM_NAMESPACE_SERVER,
2917 LDLM_NAMESPACE_GREEDY,
2919 if (m->ofd_namespace == NULL)
2920 GOTO(err_fini_stack, rc = -ENOMEM);
2921 /* set obd_namespace for compatibility with old code */
2922 obd->obd_namespace = m->ofd_namespace;
2923 ldlm_register_intent(m->ofd_namespace, ofd_intent_policy);
2924 m->ofd_namespace->ns_lvbo = &ofd_lvbo;
2925 m->ofd_namespace->ns_lvbp = m;
2927 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
2928 "filter_ldlm_cb_client", &obd->obd_ldlm_client);
2930 rc = tgt_init(env, &m->ofd_lut, obd, m->ofd_osd, ofd_common_slice,
2931 OBD_FAIL_OST_ALL_REQUEST_NET,
2932 OBD_FAIL_OST_ALL_REPLY_NET);
2934 GOTO(err_free_ns, rc);
2936 if (lmd_flags & LMD_FLG_SKIP_LFSCK)
2937 m->ofd_skip_lfsck = 1;
2938 if (lmd_flags & LMD_FLG_LOCAL_RECOV)
2939 m->ofd_lut.lut_local_recovery = 1;
2941 rc = ofd_tunables_init(m);
2943 GOTO(err_fini_lut, rc);
2945 tgd->tgd_reserved_pcnt = 0;
2947 m->ofd_brw_size = m->ofd_lut.lut_dt_conf.ddp_brw_size;
2948 m->ofd_cksum_types_supported =
2949 obd_cksum_types_supported_server(obd->obd_name);
2950 m->ofd_precreate_batch = OFD_PRECREATE_BATCH_DEFAULT;
2951 if (tgd->tgd_osfs.os_bsize * tgd->tgd_osfs.os_blocks <
2952 OFD_PRECREATE_SMALL_FS)
2953 m->ofd_precreate_batch = OFD_PRECREATE_BATCH_SMALL;
2955 rc = ofd_fs_setup(env, m, obd);
2957 GOTO(err_fini_proc, rc);
2959 fid.f_seq = FID_SEQ_LOCAL_NAME;
2962 rc = local_oid_storage_init(env, m->ofd_osd, &fid,
2965 GOTO(err_fini_fs, rc);
2967 nodemap_config = nm_config_file_register_tgt(env, m->ofd_osd,
2969 if (IS_ERR(nodemap_config)) {
2970 rc = PTR_ERR(nodemap_config);
2972 GOTO(err_fini_los, rc);
2974 obt->obt_nodemap_config_file = nodemap_config;
2977 rc = ofd_start_inconsistency_verification_thread(m);
2979 GOTO(err_fini_nm, rc);
2981 tgt_adapt_sptlrpc_conf(&m->ofd_lut);
2986 nm_config_file_deregister_tgt(env, obt->obt_nodemap_config_file);
2987 obt->obt_nodemap_config_file = NULL;
2989 local_oid_storage_fini(env, m->ofd_los);
2992 ofd_fs_cleanup(env, m);
2996 tgt_fini(env, &m->ofd_lut);
2998 ldlm_namespace_free(m->ofd_namespace, NULL, obd->obd_force);
2999 obd->obd_namespace = m->ofd_namespace = NULL;
3001 ofd_stack_fini(env, m, &m->ofd_osd->dd_lu_dev);
3006 * Stop the OFD device
3008 * This function stops the OFD device and all its subsystems.
3009 * This is the end of OFD lifecycle.
3011 * \param[in] env execution environment
3012 * \param[in] m OFD device
3014 static void ofd_fini(const struct lu_env *env, struct ofd_device *m)
3016 struct obd_device *obd = ofd_obd(m);
3017 struct lu_device *d = &m->ofd_dt_dev.dd_lu_dev;
3018 struct lfsck_stop stop;
3020 stop.ls_status = LS_PAUSED;
3022 lfsck_stop(env, m->ofd_osd, &stop);
3023 ofd_stack_pre_fini(env, m, &m->ofd_dt_dev.dd_lu_dev);
3024 target_recovery_fini(obd);
3025 if (m->ofd_namespace != NULL)
3026 ldlm_namespace_free_prior(m->ofd_namespace, NULL,
3027 d->ld_obd->obd_force);
3029 obd_exports_barrier(obd);
3030 obd_zombie_barrier();
3033 tgt_fini(env, &m->ofd_lut);
3034 ofd_stop_inconsistency_verification_thread(m);
3035 lfsck_degister(env, m->ofd_osd);
3036 ofd_fs_cleanup(env, m);
3037 nm_config_file_deregister_tgt(env, obd->u.obt.obt_nodemap_config_file);
3038 obd->u.obt.obt_nodemap_config_file = NULL;
3040 if (m->ofd_namespace != NULL) {
3041 ldlm_namespace_free_post(m->ofd_namespace);
3042 d->ld_obd->obd_namespace = m->ofd_namespace = NULL;
3045 ofd_stack_fini(env, m, &m->ofd_dt_dev.dd_lu_dev);
3047 LASSERT(atomic_read(&d->ld_ref) == 0);
3048 server_put_mount(obd->obd_name, true);
3053 * Implementation of lu_device_type_operations::ldto_device_fini.
3055 * Finalize device. Dual to ofd_device_init(). It is called from
3056 * obd_precleanup() and stops the current device.
3058 * \param[in] env execution environment
3059 * \param[in] d LU device of OFD
3063 static struct lu_device *ofd_device_fini(const struct lu_env *env,
3064 struct lu_device *d)
3067 ofd_fini(env, ofd_dev(d));
3072 * Implementation of lu_device_type_operations::ldto_device_free.
3074 * Free OFD device. Dual to ofd_device_alloc().
3076 * \param[in] env execution environment
3077 * \param[in] d LU device of OFD
3081 static struct lu_device *ofd_device_free(const struct lu_env *env,
3082 struct lu_device *d)
3084 struct ofd_device *m = ofd_dev(d);
3086 dt_device_fini(&m->ofd_dt_dev);
3092 * Implementation of lu_device_type_operations::ldto_device_alloc.
3094 * This function allocates the new OFD device. It is called from
3095 * obd_setup() if OBD device had lu_device_type defined.
3097 * \param[in] env execution environment
3098 * \param[in] t lu_device_type of OFD device
3099 * \param[in] cfg configuration log
3101 * \retval pointer to the lu_device of just allocated OFD
3102 * \retval ERR_PTR of return value on error
3104 static struct lu_device *ofd_device_alloc(const struct lu_env *env,
3105 struct lu_device_type *t,
3106 struct lustre_cfg *cfg)
3108 struct ofd_device *m;
3109 struct lu_device *l;
3114 return ERR_PTR(-ENOMEM);
3116 l = &m->ofd_dt_dev.dd_lu_dev;
3117 dt_device_init(&m->ofd_dt_dev, t);
3118 rc = ofd_init0(env, m, t, cfg);
3120 ofd_device_free(env, l);
3127 /* type constructor/destructor: ofd_type_init(), ofd_type_fini() */
3128 LU_TYPE_INIT_FINI(ofd, &ofd_thread_key);
3130 static struct lu_device_type_operations ofd_device_type_ops = {
3131 .ldto_init = ofd_type_init,
3132 .ldto_fini = ofd_type_fini,
3134 .ldto_start = ofd_type_start,
3135 .ldto_stop = ofd_type_stop,
3137 .ldto_device_alloc = ofd_device_alloc,
3138 .ldto_device_free = ofd_device_free,
3139 .ldto_device_fini = ofd_device_fini
3142 static struct lu_device_type ofd_device_type = {
3143 .ldt_tags = LU_DEVICE_DT,
3144 .ldt_name = LUSTRE_OST_NAME,
3145 .ldt_ops = &ofd_device_type_ops,
3146 .ldt_ctx_tags = LCT_DT_THREAD
3150 * Initialize OFD module.
3152 * This function is called upon module loading. It registers OFD device type
3153 * and prepares all in-memory structures used by all OFD devices.
3155 * \retval 0 if successful
3156 * \retval negative value on error
3158 static int __init ofd_init(void)
3162 rc = lu_kmem_init(ofd_caches);
3165 rc = class_register_type(&ofd_obd_ops, NULL, true, NULL,
3166 LUSTRE_OST_NAME, &ofd_device_type);
3173 * This function is called upon OFD module unloading.
3174 * It frees all related structures and unregisters OFD device type.
3176 static void __exit ofd_exit(void)
3178 lu_kmem_fini(ofd_caches);
3179 class_unregister_type(LUSTRE_OST_NAME);
3182 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
3183 MODULE_DESCRIPTION("Lustre Object Filtering Device");
3184 MODULE_VERSION(LUSTRE_VERSION_STRING);
3185 MODULE_LICENSE("GPL");
3187 module_init(ofd_init);
3188 module_exit(ofd_exit);