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)
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 OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
241 lustre_cfg_init(lcfg, LCFG_CLEANUP, &bufs);
244 top->ld_ops->ldo_process_config(env, top, lcfg);
245 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
247 if (m->ofd_los != NULL) {
248 local_oid_storage_fini(env, m->ofd_los);
252 lu_site_purge(env, top->ld_site, ~0);
253 if (!cfs_hash_is_empty(top->ld_site->ls_obj_hash)) {
254 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_OTHER, NULL);
255 lu_site_print(env, top->ld_site, &msgdata, lu_cdebug_printer);
258 LASSERT(m->ofd_osd_exp);
259 obd_disconnect(m->ofd_osd_exp);
264 static void ofd_stack_pre_fini(const struct lu_env *env, struct ofd_device *m,
265 struct lu_device *top)
267 struct lustre_cfg_bufs bufs;
268 struct lustre_cfg *lcfg;
273 lustre_cfg_bufs_reset(&bufs, ofd_name(m));
274 lustre_cfg_bufs_set_string(&bufs, 1, NULL);
275 OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
277 CERROR("%s: failed to trigger LCFG_PRE_CLEANUP\n", ofd_name(m));
279 lustre_cfg_init(lcfg, LCFG_PRE_CLEANUP, &bufs);
280 top->ld_ops->ldo_process_config(env, top, lcfg);
281 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount,
282 lcfg->lcfg_buflens));
288 /* For interoperability, see mdt_interop_param[]. */
289 static struct cfg_interop_param ofd_interop_param[] = {
290 { "ost.quota_type", NULL },
295 * Check if parameters are symlinks to the OSD.
297 * Some parameters were moved from ofd to osd and only their
298 * symlinks were kept in ofd by LU-3106. They are:
299 * -writehthrough_cache_enable
300 * -readcache_max_filesize
304 * Since they are not included by the static lprocfs var list, a pre-check
305 * is added for them to avoid "unknown param" errors. If they are matched
306 * in this check, they will be passed to the OSD directly.
308 * \param[in] param parameters to check
310 * \retval true if param is symlink to OSD param
313 static bool match_symlink_param(char *param)
318 if (class_match_param(param, PARAM_OST, ¶m) == 0) {
319 sval = strchr(param, '=');
321 paramlen = sval - param;
322 if (strncmp(param, "brw_stats", paramlen) == 0)
331 * Process various configuration parameters.
333 * This function is used by MGS to process specific configurations and
334 * pass them through to the next device in server stack, i.e. the OSD.
336 * \param[in] env execution environment
337 * \param[in] d LU device of OFD
338 * \param[in] cfg parameters to process
340 * \retval 0 if successful
341 * \retval negative value on error
343 static int ofd_process_config(const struct lu_env *env, struct lu_device *d,
344 struct lustre_cfg *cfg)
346 struct ofd_device *m = ofd_dev(d);
347 struct dt_device *dt_next = m->ofd_osd;
348 struct lu_device *next = &dt_next->dd_lu_dev;
353 switch (cfg->lcfg_command) {
355 /* For interoperability */
356 struct cfg_interop_param *ptr = NULL;
357 struct lustre_cfg *old_cfg = NULL;
361 param = lustre_cfg_string(cfg, 1);
363 CERROR("param is empty\n");
368 ptr = class_find_old_param(param, ofd_interop_param);
370 if (ptr->new_param == NULL) {
372 CWARN("For interoperability, skip this %s."
373 " It is obsolete.\n", ptr->old_param);
377 CWARN("Found old param %s, changed it to %s.\n",
378 ptr->old_param, ptr->new_param);
381 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
388 if (match_symlink_param(param)) {
389 rc = next->ld_ops->ldo_process_config(env, next, cfg);
393 count = class_modify_config(cfg, PARAM_OST,
394 &d->ld_obd->obd_kset.kobj);
399 CDEBUG(D_CONFIG, "pass param %s down the stack.\n",
401 /* we don't understand; pass it on */
402 rc = next->ld_ops->ldo_process_config(env, next, cfg);
405 case LCFG_SPTLRPC_CONF: {
410 /* others are passed further */
411 rc = next->ld_ops->ldo_process_config(env, next, cfg);
418 * Implementation of lu_object_operations::loo_object_init for OFD
420 * Allocate just the next object (OSD) in stack.
422 * \param[in] env execution environment
423 * \param[in] o lu_object of OFD object
424 * \param[in] conf additional configuration parameters, not used here
426 * \retval 0 if successful
427 * \retval negative value on error
429 static int ofd_object_init(const struct lu_env *env, struct lu_object *o,
430 const struct lu_object_conf *conf)
432 struct ofd_device *d = ofd_dev(o->lo_dev);
433 struct lu_device *under;
434 struct lu_object *below;
439 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
440 PFID(lu_object_fid(o)));
442 under = &d->ofd_osd->dd_lu_dev;
443 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
445 lu_object_add(o, below);
453 * Implementation of lu_object_operations::loo_object_free.
455 * Finish OFD object lifecycle and free its memory.
457 * \param[in] env execution environment
458 * \param[in] o LU object of OFD object
460 static void ofd_object_free(const struct lu_env *env, struct lu_object *o)
462 struct ofd_object *of = ofd_obj(o);
463 struct lu_object_header *h;
468 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
469 PFID(lu_object_fid(o)));
472 lu_object_header_fini(h);
473 OBD_SLAB_FREE_PTR(of, ofd_object_kmem);
478 * Implementation of lu_object_operations::loo_object_print.
480 * Print OFD part of compound OFD-OSD object. See lu_object_print() and
481 * LU_OBJECT_DEBUG() for more details about the compound object printing.
483 * \param[in] env execution environment
484 * \param[in] cookie opaque data passed to the printer function
485 * \param[in] p printer function to use
486 * \param[in] o LU object of OFD object
488 * \retval 0 if successful
489 * \retval negative value on error
491 static int ofd_object_print(const struct lu_env *env, void *cookie,
492 lu_printer_t p, const struct lu_object *o)
494 return (*p)(env, cookie, LUSTRE_OST_NAME"-object@%p", o);
497 static struct lu_object_operations ofd_obj_ops = {
498 .loo_object_init = ofd_object_init,
499 .loo_object_free = ofd_object_free,
500 .loo_object_print = ofd_object_print
504 * Implementation of lu_device_operations::lod_object_alloc.
506 * This function allocates OFD part of compound OFD-OSD object and
507 * initializes its header, because OFD is the top device in stack
509 * \param[in] env execution environment
510 * \param[in] hdr object header, NULL for OFD
511 * \param[in] d lu_device
513 * \retval allocated object if successful
514 * \retval NULL value on failed allocation
516 static struct lu_object *ofd_object_alloc(const struct lu_env *env,
517 const struct lu_object_header *hdr,
520 struct ofd_object *of;
524 OBD_SLAB_ALLOC_PTR_GFP(of, ofd_object_kmem, GFP_NOFS);
527 struct lu_object_header *h;
529 o = &of->ofo_obj.do_lu;
531 lu_object_header_init(h);
532 lu_object_init(o, h, d);
533 lu_object_add_top(h, o);
534 o->lo_ops = &ofd_obj_ops;
542 * Return the result of LFSCK run to the OFD.
544 * Notify OFD about result of LFSCK run. That may block the new object
545 * creation until problem is fixed by LFSCK.
547 * \param[in] env execution environment
548 * \param[in] data pointer to the OFD device
549 * \param[in] event LFSCK event type
551 * \retval 0 if successful
552 * \retval negative value on unknown event
554 static int ofd_lfsck_out_notify(const struct lu_env *env, void *data,
555 enum lfsck_events event)
557 struct ofd_device *ofd = data;
558 struct obd_device *obd = ofd_obd(ofd);
561 case LE_LASTID_REBUILDING:
562 CWARN("%s: Found crashed LAST_ID, deny creating new OST-object "
563 "on the device until the LAST_ID rebuilt successfully.\n",
565 down_write(&ofd->ofd_lastid_rwsem);
566 ofd->ofd_lastid_rebuilding = 1;
567 up_write(&ofd->ofd_lastid_rwsem);
569 case LE_LASTID_REBUILT: {
570 down_write(&ofd->ofd_lastid_rwsem);
571 ofd_seqs_free(env, ofd);
572 ofd->ofd_lastid_rebuilding = 0;
573 ofd->ofd_lastid_gen++;
574 up_write(&ofd->ofd_lastid_rwsem);
575 CWARN("%s: Rebuilt crashed LAST_ID files successfully.\n",
580 CERROR("%s: unknown lfsck event: rc = %d\n",
581 ofd_name(ofd), event);
589 * Implementation of lu_device_operations::ldo_prepare.
591 * This method is called after layer has been initialized and before it starts
592 * serving user requests. In OFD it starts lfsk check routines and initializes
595 * \param[in] env execution environment
596 * \param[in] pdev higher device in stack, NULL for OFD
597 * \param[in] dev lu_device of OFD device
599 * \retval 0 if successful
600 * \retval negative value on error
602 static int ofd_prepare(const struct lu_env *env, struct lu_device *pdev,
603 struct lu_device *dev)
605 struct ofd_thread_info *info;
606 struct ofd_device *ofd = ofd_dev(dev);
607 struct obd_device *obd = ofd_obd(ofd);
608 struct lu_device *next = &ofd->ofd_osd->dd_lu_dev;
613 info = ofd_info_init(env, NULL);
617 /* initialize lower device */
618 rc = next->ld_ops->ldo_prepare(env, dev, next);
622 rc = lfsck_register(env, ofd->ofd_osd, ofd->ofd_osd, obd,
623 ofd_lfsck_out_notify, ofd, false);
625 CERROR("%s: failed to initialize lfsck: rc = %d\n",
630 rc = lfsck_register_namespace(env, ofd->ofd_osd, ofd->ofd_namespace);
631 /* The LFSCK instance is registered just now, so it must be there when
632 * register the namespace to such instance. */
633 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
635 target_recovery_init(&ofd->ofd_lut, tgt_request_handle);
636 OBD_FAIL_TIMEOUT_ORSET(OBD_FAIL_OST_PREPARE_DELAY, OBD_FAIL_ONCE,
637 (OBD_TIMEOUT_DEFAULT + 1) / 4);
638 LASSERT(obd->obd_no_conn);
639 spin_lock(&obd->obd_dev_lock);
640 obd->obd_no_conn = 0;
641 spin_unlock(&obd->obd_dev_lock);
643 if (obd->obd_recovering == 0)
644 ofd_postrecov(env, ofd);
650 * Implementation of lu_device_operations::ldo_recovery_complete.
652 * This method notifies all layers about 'recovery complete' event. That means
653 * device is in full state and consistent. An OFD calculates available grant
654 * space upon this event.
656 * \param[in] env execution environment
657 * \param[in] dev lu_device of OFD device
659 * \retval 0 if successful
660 * \retval negative value on error
662 static int ofd_recovery_complete(const struct lu_env *env,
663 struct lu_device *dev)
665 struct ofd_thread_info *oti = ofd_info(env);
666 struct ofd_device *ofd = ofd_dev(dev);
667 struct lu_device *next = &ofd->ofd_osd->dd_lu_dev;
673 * Grant space for object precreation on the self export.
674 * The initial reserved space (i.e. 10MB for zfs and 280KB for ldiskfs)
675 * is enough to create 10k objects. More space is then acquired for
676 * precreation in tgt_grant_create().
678 memset(&oti->fti_ocd, 0, sizeof(oti->fti_ocd));
679 oti->fti_ocd.ocd_grant = OST_MAX_PRECREATE / 2;
680 oti->fti_ocd.ocd_grant *= ofd->ofd_lut.lut_dt_conf.ddp_inodespace;
681 oti->fti_ocd.ocd_connect_flags = OBD_CONNECT_GRANT |
682 OBD_CONNECT_GRANT_PARAM;
683 tgt_grant_connect(env, dev->ld_obd->obd_self_export, &oti->fti_ocd,
685 rc = next->ld_ops->ldo_recovery_complete(env, next);
690 * lu_device_operations matrix for OFD device.
692 static struct lu_device_operations ofd_lu_ops = {
693 .ldo_object_alloc = ofd_object_alloc,
694 .ldo_process_config = ofd_process_config,
695 .ldo_recovery_complete = ofd_recovery_complete,
696 .ldo_prepare = ofd_prepare,
699 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 14, 53, 0)
701 * Expose OSD statistics to OFD layer.
703 * The osd interfaces to the backend file system exposes useful data
704 * such as brw_stats and read or write cache states. This same data
705 * needs to be exposed into the obdfilter (ofd) layer to maintain
706 * backwards compatibility. This function creates the symlinks in the
707 * proc layer to enable this.
709 * \param[in] ofd OFD device
711 static void ofd_procfs_add_brw_stats_symlink(struct ofd_device *ofd)
713 struct obd_device *obd = ofd_obd(ofd);
714 struct obd_device *osd_obd = ofd->ofd_osd_exp->exp_obd;
715 struct kobj_type *osd_type;
718 osd_type = get_ktype(&ofd->ofd_osd->dd_kobj);
719 for (i = 0; osd_type->default_attrs[i]; i++) {
720 if (strcmp(osd_type->default_attrs[i]->name,
721 "read_cache_enable") == 0) {
722 ofd->ofd_read_cache_enable =
723 osd_type->default_attrs[i];
726 if (strcmp(osd_type->default_attrs[i]->name,
727 "readcache_max_filesize") == 0) {
728 ofd->ofd_read_cache_max_filesize =
729 osd_type->default_attrs[i];
732 if (strcmp(osd_type->default_attrs[i]->name,
733 "writethrough_cache_enable") == 0) {
734 ofd->ofd_write_cache_enable =
735 osd_type->default_attrs[i];
739 if (obd->obd_proc_entry == NULL)
742 lprocfs_add_symlink("brw_stats", obd->obd_proc_entry,
743 "../../%s/%s/brw_stats",
744 osd_obd->obd_type->typ_name, obd->obd_name);
749 * Cleanup all procfs entries in OFD.
751 * \param[in] ofd OFD device
753 static void ofd_procfs_fini(struct ofd_device *ofd)
755 struct obd_device *obd = ofd_obd(ofd);
757 tgt_tunables_fini(&ofd->ofd_lut);
758 lprocfs_free_per_client_stats(obd);
759 lprocfs_obd_cleanup(obd);
760 lprocfs_free_obd_stats(obd);
761 lprocfs_job_stats_fini(obd);
765 * Stop SEQ/FID server on OFD.
767 * \param[in] env execution environment
768 * \param[in] ofd OFD device
770 * \retval 0 if successful
771 * \retval negative value on error
773 int ofd_fid_fini(const struct lu_env *env, struct ofd_device *ofd)
775 return seq_site_fini(env, &ofd->ofd_seq_site);
779 * Start SEQ/FID server on OFD.
781 * The SEQ/FID server on OFD is needed to allocate FIDs for new objects.
782 * It also connects to the master server to get own FID sequence (SEQ) range
783 * to this particular OFD. Typically that happens when the OST is first
784 * formatted or in the rare case that it exhausts the local sequence range.
786 * The sequence range is allocated out to the MDTs for OST object allocations,
787 * and not directly to the clients.
789 * \param[in] env execution environment
790 * \param[in] ofd OFD device
792 * \retval 0 if successful
793 * \retval negative value on error
795 int ofd_fid_init(const struct lu_env *env, struct ofd_device *ofd)
797 struct seq_server_site *ss = &ofd->ofd_seq_site;
798 struct lu_device *lu = &ofd->ofd_dt_dev.dd_lu_dev;
799 char *obd_name = ofd_name(ofd);
801 int len = strlen(obd_name) + 7;
804 ss = &ofd->ofd_seq_site;
805 lu->ld_site->ld_seq_site = ss;
806 ss->ss_lu = lu->ld_site;
807 ss->ss_node_id = ofd->ofd_lut.lut_lsd.lsd_osd_index;
809 OBD_ALLOC(name, len);
813 OBD_ALLOC_PTR(ss->ss_server_seq);
814 if (ss->ss_server_seq == NULL)
815 GOTO(out_name, rc = -ENOMEM);
817 rc = seq_server_init(env, ss->ss_server_seq, ofd->ofd_osd, obd_name,
818 LUSTRE_SEQ_SERVER, ss);
820 CERROR("%s: seq server init error: rc = %d\n", obd_name, rc);
821 GOTO(out_server, rc);
823 ss->ss_server_seq->lss_space.lsr_index = ss->ss_node_id;
825 OBD_ALLOC_PTR(ss->ss_client_seq);
826 if (ss->ss_client_seq == NULL)
827 GOTO(out_server, rc = -ENOMEM);
829 snprintf(name, len, "%s-super", obd_name);
830 rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_DATA,
833 CERROR("%s: seq client init error: rc = %d\n", obd_name, rc);
834 GOTO(out_client, rc);
837 rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
841 seq_client_fini(ss->ss_client_seq);
842 OBD_FREE_PTR(ss->ss_client_seq);
843 ss->ss_client_seq = NULL;
845 seq_server_fini(ss->ss_server_seq, env);
846 OBD_FREE_PTR(ss->ss_server_seq);
847 ss->ss_server_seq = NULL;
856 * OFD request handler for OST_SET_INFO RPC.
858 * This is OFD-specific part of request handling
860 * \param[in] tsi target session environment for this request
862 * \retval 0 if successful
863 * \retval negative value on error
865 static int ofd_set_info_hdl(struct tgt_session_info *tsi)
867 struct ptlrpc_request *req = tgt_ses_req(tsi);
868 struct ost_body *body = NULL, *repbody;
869 void *key, *val = NULL;
870 int keylen, vallen, rc = 0;
871 bool is_grant_shrink;
875 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
877 DEBUG_REQ(D_HA, req, "no set_info key");
878 RETURN(err_serious(-EFAULT));
880 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
883 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
885 DEBUG_REQ(D_HA, req, "no set_info val");
886 RETURN(err_serious(-EFAULT));
888 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
891 is_grant_shrink = KEY_IS(KEY_GRANT_SHRINK);
893 /* In this case the value is actually an RMF_OST_BODY, so we
894 * transmutate the type of this PTLRPC */
895 req_capsule_extend(tsi->tsi_pill, &RQF_OST_SET_GRANT_INFO);
897 rc = req_capsule_server_pack(tsi->tsi_pill);
901 if (is_grant_shrink) {
902 body = req_capsule_client_get(tsi->tsi_pill, &RMF_OST_BODY);
904 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
907 /** handle grant shrink, similar to a read request */
908 tgt_grant_prepare_read(tsi->tsi_env, tsi->tsi_exp,
910 } else if (KEY_IS(KEY_EVICT_BY_NID)) {
912 obd_export_evict_by_nid(tsi->tsi_exp->exp_obd, val);
915 CERROR("%s: Unsupported key %s\n",
916 tgt_name(tsi->tsi_tgt), (char *)key);
919 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SET_INFO,
926 * Get FIEMAP (FIle Extent MAPping) for object with the given FID.
928 * This function returns a list of extents which describes how a file's
929 * blocks are laid out on the disk.
931 * \param[in] env execution environment
932 * \param[in] ofd OFD device
933 * \param[in] fid FID of object
934 * \param[in] fiemap fiemap structure to fill with data
936 * \retval 0 if \a fiemap is filled with data successfully
937 * \retval negative value on error
939 int ofd_fiemap_get(const struct lu_env *env, struct ofd_device *ofd,
940 struct lu_fid *fid, struct fiemap *fiemap)
942 struct ofd_object *fo;
945 fo = ofd_object_find(env, ofd, fid);
947 CERROR("%s: error finding object "DFID"\n",
948 ofd_name(ofd), PFID(fid));
952 ofd_read_lock(env, fo);
953 if (ofd_object_exists(fo))
954 rc = dt_fiemap_get(env, ofd_object_child(fo), fiemap);
957 ofd_read_unlock(env, fo);
958 ofd_object_put(env, fo);
963 static int ofd_lock_unlock_region(const struct lu_env *env,
964 struct ldlm_namespace *ns,
965 struct ldlm_res_id *res_id,
966 unsigned long long begin,
967 unsigned long long end)
971 struct lustre_handle lh = { 0 };
973 LASSERT(begin <= end);
975 rc = tgt_extent_lock(env, ns, res_id, begin, end, &lh, LCK_PR, &flags);
979 CDEBUG(D_OTHER, "ost lock [%llu,%llu], lh=%p\n", begin, end, &lh);
980 tgt_extent_unlock(&lh, LCK_PR);
986 * Lock the sparse areas of given resource.
988 * The locking of sparse areas will cause dirty data to be flushed back from
989 * clients. This is used when getting the FIEMAP of an object to make sure
990 * there is no unaccounted cached data on clients.
992 * This function goes through \a fiemap list of extents and locks only sparse
993 * areas between extents.
995 * \param[in] ns LDLM namespace
996 * \param[in] res_id resource ID
997 * \param[in] fiemap file extents mapping on disk
998 * \param[in] locked list head of regions list
1000 * \retval 0 if successful
1001 * \retval negative value on error
1003 static int lock_zero_regions(const struct lu_env *env,
1004 struct ldlm_namespace *ns,
1005 struct ldlm_res_id *res_id,
1006 struct fiemap *fiemap)
1008 __u64 begin = fiemap->fm_start;
1011 struct fiemap_extent *fiemap_start = fiemap->fm_extents;
1015 CDEBUG(D_OTHER, "extents count %u\n", fiemap->fm_mapped_extents);
1016 for (i = 0; i < fiemap->fm_mapped_extents; i++) {
1017 if (fiemap_start[i].fe_logical > begin) {
1018 CDEBUG(D_OTHER, "ost lock [%llu,%llu]\n",
1019 begin, fiemap_start[i].fe_logical);
1020 rc = ofd_lock_unlock_region(env, ns, res_id, begin,
1021 fiemap_start[i].fe_logical);
1026 begin = fiemap_start[i].fe_logical + fiemap_start[i].fe_length;
1029 if (begin < (fiemap->fm_start + fiemap->fm_length)) {
1030 CDEBUG(D_OTHER, "ost lock [%llu,%llu]\n",
1031 begin, fiemap->fm_start + fiemap->fm_length);
1032 rc = ofd_lock_unlock_region(env, ns, res_id, begin,
1033 fiemap->fm_start + fiemap->fm_length);
1041 * OFD request handler for OST_GET_INFO RPC.
1043 * This is OFD-specific part of request handling. The OFD-specific keys are:
1044 * - KEY_LAST_ID (obsolete)
1048 * This function reads needed data from storage and fills reply with it.
1050 * Note: the KEY_LAST_ID is obsolete, replaced by KEY_LAST_FID on newer MDTs,
1051 * and is kept for compatibility.
1053 * \param[in] tsi target session environment for this request
1055 * \retval 0 if successful
1056 * \retval negative value on error
1058 static int ofd_get_info_hdl(struct tgt_session_info *tsi)
1060 struct obd_export *exp = tsi->tsi_exp;
1061 struct ofd_device *ofd = ofd_exp(exp);
1062 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1065 int replylen, rc = 0;
1069 /* this common part for get_info rpc */
1070 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
1072 DEBUG_REQ(D_HA, tgt_ses_req(tsi), "no get_info key");
1073 RETURN(err_serious(-EPROTO));
1075 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
1078 if (KEY_IS(KEY_LAST_ID)) {
1080 struct ofd_seq *oseq;
1082 req_capsule_extend(tsi->tsi_pill, &RQF_OST_GET_INFO_LAST_ID);
1083 rc = req_capsule_server_pack(tsi->tsi_pill);
1085 RETURN(err_serious(rc));
1087 last_id = req_capsule_server_get(tsi->tsi_pill, &RMF_OBD_ID);
1089 oseq = ofd_seq_load(tsi->tsi_env, ofd,
1090 (u64)exp->exp_filter_data.fed_group);
1094 *last_id = ofd_seq_last_oid(oseq);
1095 ofd_seq_put(tsi->tsi_env, oseq);
1096 } else if (KEY_IS(KEY_FIEMAP)) {
1097 struct ll_fiemap_info_key *fm_key;
1098 struct fiemap *fiemap;
1101 req_capsule_extend(tsi->tsi_pill, &RQF_OST_GET_INFO_FIEMAP);
1103 fm_key = req_capsule_client_get(tsi->tsi_pill, &RMF_FIEMAP_KEY);
1104 rc = tgt_validate_obdo(tsi, &fm_key->lfik_oa);
1106 RETURN(err_serious(rc));
1108 fid = &fm_key->lfik_oa.o_oi.oi_fid;
1110 CDEBUG(D_INODE, "get FIEMAP of object "DFID"\n", PFID(fid));
1112 replylen = fiemap_count_to_size(
1113 fm_key->lfik_fiemap.fm_extent_count);
1114 req_capsule_set_size(tsi->tsi_pill, &RMF_FIEMAP_VAL,
1115 RCL_SERVER, replylen);
1117 rc = req_capsule_server_pack(tsi->tsi_pill);
1119 RETURN(err_serious(rc));
1121 fiemap = req_capsule_server_get(tsi->tsi_pill, &RMF_FIEMAP_VAL);
1125 *fiemap = fm_key->lfik_fiemap;
1126 rc = ofd_fiemap_get(tsi->tsi_env, ofd, fid, fiemap);
1128 /* LU-3219: Lock the sparse areas to make sure dirty
1129 * flushed back from client, then call fiemap again. */
1130 if (fm_key->lfik_oa.o_valid & OBD_MD_FLFLAGS &&
1131 fm_key->lfik_oa.o_flags & OBD_FL_SRVLOCK) {
1132 ost_fid_build_resid(fid, &fti->fti_resid);
1133 rc = lock_zero_regions(tsi->tsi_env, ofd->ofd_namespace,
1134 &fti->fti_resid, fiemap);
1136 rc = ofd_fiemap_get(tsi->tsi_env, ofd, fid,
1139 } else if (KEY_IS(KEY_LAST_FID)) {
1140 struct ofd_device *ofd = ofd_exp(exp);
1141 struct ofd_seq *oseq;
1145 req_capsule_extend(tsi->tsi_pill, &RQF_OST_GET_INFO_LAST_FID);
1146 rc = req_capsule_server_pack(tsi->tsi_pill);
1148 RETURN(err_serious(rc));
1150 fid = req_capsule_client_get(tsi->tsi_pill, &RMF_FID);
1152 RETURN(err_serious(-EPROTO));
1154 fid_le_to_cpu(&fti->fti_ostid.oi_fid, fid);
1156 fid = req_capsule_server_get(tsi->tsi_pill, &RMF_FID);
1160 oseq = ofd_seq_load(tsi->tsi_env, ofd,
1161 ostid_seq(&fti->fti_ostid));
1163 RETURN(PTR_ERR(oseq));
1165 rc = ostid_to_fid(fid, &oseq->os_oi,
1166 ofd->ofd_lut.lut_lsd.lsd_osd_index);
1170 CDEBUG(D_HA, "%s: LAST FID is "DFID"\n", ofd_name(ofd),
1173 ofd_seq_put(tsi->tsi_env, oseq);
1175 CERROR("%s: not supported key %s\n", tgt_name(tsi->tsi_tgt),
1179 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_GET_INFO,
1186 * OFD request handler for OST_GETATTR RPC.
1188 * This is OFD-specific part of request handling. It finds the OFD object
1189 * by its FID, gets attributes from storage and packs result to the reply.
1191 * \param[in] tsi target session environment for this request
1193 * \retval 0 if successful
1194 * \retval negative value on error
1196 static int ofd_getattr_hdl(struct tgt_session_info *tsi)
1198 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1199 struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
1200 struct ost_body *repbody;
1201 struct lustre_handle lh = { 0 };
1202 struct ofd_object *fo;
1204 enum ldlm_mode lock_mode = LCK_PR;
1209 LASSERT(tsi->tsi_ost_body != NULL);
1211 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1212 if (repbody == NULL)
1215 repbody->oa.o_oi = tsi->tsi_ost_body->oa.o_oi;
1216 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1218 srvlock = tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLFLAGS &&
1219 tsi->tsi_ost_body->oa.o_flags & OBD_FL_SRVLOCK;
1222 if (unlikely(tsi->tsi_ost_body->oa.o_flags & OBD_FL_FLUSH))
1225 rc = tgt_extent_lock(tsi->tsi_env,
1226 tsi->tsi_tgt->lut_obd->obd_namespace,
1227 &tsi->tsi_resid, 0, OBD_OBJECT_EOF, &lh,
1233 fo = ofd_object_find_exists(tsi->tsi_env, ofd, &tsi->tsi_fid);
1235 GOTO(out, rc = PTR_ERR(fo));
1237 rc = ofd_attr_get(tsi->tsi_env, fo, &fti->fti_attr);
1241 obdo_from_la(&repbody->oa, &fti->fti_attr,
1242 OFD_VALID_FLAGS | LA_UID | LA_GID | LA_PROJID);
1244 /* Store object version in reply */
1245 curr_version = dt_version_get(tsi->tsi_env,
1246 ofd_object_child(fo));
1247 if ((__s64)curr_version != -EOPNOTSUPP) {
1248 repbody->oa.o_valid |= OBD_MD_FLDATAVERSION;
1249 repbody->oa.o_data_version = curr_version;
1252 if (fo->ofo_ff.ff_layout_version > 0) {
1253 repbody->oa.o_valid |= OBD_MD_LAYOUT_VERSION;
1254 repbody->oa.o_layout_version =
1255 fo->ofo_ff.ff_layout_version + fo->ofo_ff.ff_range;
1257 CDEBUG(D_INODE, DFID": get layout version: %u\n",
1258 PFID(&tsi->tsi_fid),
1259 repbody->oa.o_layout_version);
1263 ofd_object_put(tsi->tsi_env, fo);
1266 tgt_extent_unlock(&lh, lock_mode);
1268 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_GETATTR,
1271 repbody->oa.o_valid |= OBD_MD_FLFLAGS;
1272 repbody->oa.o_flags = OBD_FL_FLUSH;
1278 * OFD request handler for OST_SETATTR RPC.
1280 * This is OFD-specific part of request handling. It finds the OFD object
1281 * by its FID, sets attributes from request and packs result to the reply.
1283 * \param[in] tsi target session environment for this request
1285 * \retval 0 if successful
1286 * \retval negative value on error
1288 static int ofd_setattr_hdl(struct tgt_session_info *tsi)
1290 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1291 struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
1292 struct ost_body *body = tsi->tsi_ost_body;
1293 struct ost_body *repbody;
1294 struct ldlm_resource *res;
1295 struct ofd_object *fo;
1300 LASSERT(body != NULL);
1302 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1303 if (repbody == NULL)
1306 repbody->oa.o_oi = body->oa.o_oi;
1307 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1309 /* This would be very bad - accidentally truncating a file when
1310 * changing the time or similar - bug 12203. */
1311 if (body->oa.o_valid & OBD_MD_FLSIZE &&
1312 body->oa.o_size != OBD_OBJECT_EOF) {
1313 static char mdsinum[48];
1315 if (body->oa.o_valid & OBD_MD_FLFID)
1316 snprintf(mdsinum, sizeof(mdsinum) - 1,
1317 "of parent "DFID, body->oa.o_parent_seq,
1318 body->oa.o_parent_oid, 0);
1322 CERROR("%s: setattr from %s is trying to truncate object "DFID
1323 " %s\n", ofd_name(ofd), obd_export_nid2str(tsi->tsi_exp),
1324 PFID(&tsi->tsi_fid), mdsinum);
1328 fo = ofd_object_find_exists(tsi->tsi_env, ofd, &tsi->tsi_fid);
1330 GOTO(out, rc = PTR_ERR(fo));
1332 la_from_obdo(&fti->fti_attr, &body->oa, body->oa.o_valid);
1333 fti->fti_attr.la_valid &= ~LA_TYPE;
1335 /* setting objects attributes (including owner/group) */
1336 rc = ofd_attr_set(tsi->tsi_env, fo, &fti->fti_attr, &body->oa);
1340 obdo_from_la(&repbody->oa, &fti->fti_attr,
1341 OFD_VALID_FLAGS | LA_UID | LA_GID | LA_PROJID);
1343 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SETATTR,
1347 ofd_object_put(tsi->tsi_env, fo);
1350 /* we do not call this before to avoid lu_object_find() in
1351 * ->lvbo_update() holding another reference on the object.
1352 * otherwise concurrent destroy can make the object unavailable
1353 * for 2nd lu_object_find() waiting for the first reference
1354 * to go... deadlock! */
1355 res = ldlm_resource_get(ofd->ofd_namespace, NULL,
1356 &tsi->tsi_resid, LDLM_EXTENT, 0);
1358 ldlm_res_lvbo_update(res, NULL, 0);
1359 ldlm_resource_putref(res);
1366 * Destroy OST orphans.
1368 * This is part of OST_CREATE RPC handling. If there is flag OBD_FL_DELORPHAN
1369 * set then we must destroy possible orphaned objects.
1371 * \param[in] env execution environment
1372 * \param[in] exp OBD export
1373 * \param[in] ofd OFD device
1374 * \param[in] oa obdo structure for reply
1376 * \retval 0 if successful
1377 * \retval negative value on error
1379 static int ofd_orphans_destroy(const struct lu_env *env,
1380 struct obd_export *exp,
1381 struct ofd_device *ofd, struct obdo *oa)
1383 struct ofd_thread_info *info = ofd_info(env);
1384 struct lu_fid *fid = &info->fti_fid;
1385 struct ost_id *oi = &oa->o_oi;
1386 struct ofd_seq *oseq;
1387 u64 seq = ostid_seq(oi);
1388 u64 end_id = ostid_id(oi);
1396 oseq = ofd_seq_get(ofd, seq);
1398 CERROR("%s: Can not find seq for "DOSTID"\n",
1399 ofd_name(ofd), POSTID(oi));
1404 last = ofd_seq_last_oid(oseq);
1407 LASSERT(exp != NULL);
1408 skip_orphan = !!(exp_connect_flags(exp) & OBD_CONNECT_SKIP_ORPHAN);
1410 if (OBD_FAIL_CHECK(OBD_FAIL_OST_NODESTROY))
1413 LCONSOLE(D_INFO, "%s: deleting orphan objects from "DOSTID
1414 " to "DOSTID"\n", ofd_name(ofd), seq, end_id + 1, seq, last);
1416 while (oid > end_id) {
1417 rc = fid_set_id(fid, oid);
1418 if (unlikely(rc != 0))
1421 rc = ofd_destroy_by_fid(env, ofd, fid, 1);
1422 if (rc != 0 && rc != -ENOENT && rc != -ESTALE &&
1423 likely(rc != -EREMCHG && rc != -EINPROGRESS))
1424 /* this is pretty fatal... */
1425 CEMERG("%s: error destroying precreated id "
1427 ofd_name(ofd), PFID(fid), rc);
1431 ofd_seq_last_oid_set(oseq, oid);
1432 /* update last_id on disk periodically so that if we
1433 * restart * we don't need to re-scan all of the just
1434 * deleted objects. */
1435 if ((oid & 511) == 0)
1436 ofd_seq_last_oid_write(env, ofd, oseq);
1440 CDEBUG(D_HA, "%s: after destroy: set last_id to "DOSTID"\n",
1441 ofd_name(ofd), seq, oid);
1445 ofd_seq_last_oid_set(oseq, oid);
1446 rc = ofd_seq_last_oid_write(env, ofd, oseq);
1448 /* don't reuse orphan object, return last used objid */
1449 rc = ostid_set_id(oi, last);
1455 ofd_seq_put(env, oseq);
1460 * OFD request handler for OST_CREATE RPC.
1462 * This is OFD-specific part of request handling. Its main purpose is to
1463 * create new data objects on OST, but it also used to destroy orphans.
1465 * \param[in] tsi target session environment for this request
1467 * \retval 0 if successful
1468 * \retval negative value on error
1470 static int ofd_create_hdl(struct tgt_session_info *tsi)
1472 struct ptlrpc_request *req = tgt_ses_req(tsi);
1473 struct ost_body *repbody;
1474 const struct obdo *oa = &tsi->tsi_ost_body->oa;
1475 struct obdo *rep_oa;
1476 struct obd_export *exp = tsi->tsi_exp;
1477 struct ofd_device *ofd = ofd_exp(exp);
1478 u64 seq = ostid_seq(&oa->o_oi);
1479 u64 oid = ostid_id(&oa->o_oi);
1480 struct ofd_seq *oseq;
1488 if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS))
1491 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1492 if (repbody == NULL)
1495 down_read(&ofd->ofd_lastid_rwsem);
1496 /* Currently, for safe, we do not distinguish which LAST_ID is broken,
1497 * we may do that in the future.
1498 * Return -ENOSPC until the LAST_ID rebuilt. */
1499 if (unlikely(ofd->ofd_lastid_rebuilding))
1500 GOTO(out_sem, rc = -ENOSPC);
1502 rep_oa = &repbody->oa;
1503 rep_oa->o_oi = oa->o_oi;
1505 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
1507 CDEBUG(D_INFO, "ofd_create("DOSTID")\n", POSTID(&oa->o_oi));
1509 oseq = ofd_seq_load(tsi->tsi_env, ofd, seq);
1511 CERROR("%s: Can't find FID Sequence %#llx: rc = %ld\n",
1512 ofd_name(ofd), seq, PTR_ERR(oseq));
1513 GOTO(out_sem, rc = -EINVAL);
1516 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
1517 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
1518 if (!ofd_obd(ofd)->obd_recovering ||
1519 oid > ofd_seq_last_oid(oseq)) {
1520 CERROR("%s: recreate objid "DOSTID" > last id %llu"
1521 "\n", ofd_name(ofd), POSTID(&oa->o_oi),
1522 ofd_seq_last_oid(oseq));
1523 GOTO(out_nolock, rc = -EINVAL);
1525 /* Do nothing here, we re-create objects during recovery
1526 * upon write replay, see ofd_preprw_write() */
1527 GOTO(out_nolock, rc = 0);
1529 /* former ofd_handle_precreate */
1530 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
1531 (oa->o_flags & OBD_FL_DELORPHAN)) {
1532 exp->exp_filter_data.fed_lastid_gen = ofd->ofd_lastid_gen;
1534 /* destroy orphans */
1535 if (lustre_msg_get_conn_cnt(tgt_ses_req(tsi)->rq_reqmsg) <
1536 exp->exp_conn_cnt) {
1537 CERROR("%s: dropping old orphan cleanup request\n",
1539 GOTO(out_nolock, rc = 0);
1541 /* This causes inflight precreates to abort and drop lock */
1542 oseq->os_destroys_in_progress = 1;
1543 mutex_lock(&oseq->os_create_lock);
1544 if (!oseq->os_destroys_in_progress) {
1546 "%s:[%llu] destroys_in_progress already cleared\n",
1547 ofd_name(ofd), seq);
1548 rc = ostid_set_id(&rep_oa->o_oi,
1549 ofd_seq_last_oid(oseq));
1552 diff = oid - ofd_seq_last_oid(oseq);
1553 CDEBUG(D_HA, "ofd_last_id() = %llu -> diff = %lld\n",
1554 ofd_seq_last_oid(oseq), diff);
1555 if (-diff > OST_MAX_PRECREATE) {
1556 LCONSOLE(D_INFO, "%s: too large difference between MDS "
1557 "LAST_ID "DFID" (%llu) and OST LAST_ID "DFID" "
1558 "(%llu), trust the OST\n",
1559 ofd_name(ofd), PFID(&oa->o_oi.oi_fid), oid,
1560 PFID(&oseq->os_oi.oi_fid),
1561 ofd_seq_last_oid(oseq));
1563 /* Let MDS know that we are so far ahead. */
1564 rc = ostid_set_id(&rep_oa->o_oi,
1565 ofd_seq_last_oid(oseq) + 1);
1566 } else if (diff < 0) {
1567 rc = ofd_orphans_destroy(tsi->tsi_env, exp,
1569 oseq->os_destroys_in_progress = 0;
1571 /* XXX: Used by MDS for the first time! */
1572 oseq->os_destroys_in_progress = 0;
1575 if (unlikely(exp->exp_filter_data.fed_lastid_gen !=
1576 ofd->ofd_lastid_gen)) {
1577 /* Keep the export ref so we can send the reply. */
1578 ofd_obd_disconnect(class_export_get(exp));
1579 GOTO(out_nolock, rc = -ENOTCONN);
1582 mutex_lock(&oseq->os_create_lock);
1583 if (lustre_msg_get_conn_cnt(tgt_ses_req(tsi)->rq_reqmsg) <
1584 exp->exp_conn_cnt) {
1585 CERROR("%s: dropping old precreate request\n",
1589 /* only precreate if seq is 0, IDIF or normal and also o_id
1590 * must be specfied */
1591 if ((!fid_seq_is_mdt(seq) && !fid_seq_is_norm(seq) &&
1592 !fid_seq_is_idif(seq)) || oid == 0) {
1593 diff = 1; /* shouldn't we create this right now? */
1595 diff = oid - ofd_seq_last_oid(oseq);
1596 /* Do sync create if the seq is about to used up */
1597 if (fid_seq_is_idif(seq) || fid_seq_is_mdt0(seq)) {
1598 if (unlikely(oid >= IDIF_MAX_OID - 1))
1600 } else if (fid_seq_is_norm(seq)) {
1602 LUSTRE_DATA_SEQ_MAX_WIDTH - 1))
1605 CERROR("%s : invalid o_seq "DOSTID"\n",
1606 ofd_name(ofd), POSTID(&oa->o_oi));
1607 GOTO(out, rc = -EINVAL);
1612 CERROR("%s: invalid precreate request for "
1613 DOSTID", last_id %llu. "
1614 "Likely MDS last_id corruption\n",
1615 ofd_name(ofd), POSTID(&oa->o_oi),
1616 ofd_seq_last_oid(oseq));
1617 GOTO(out, rc = -EINVAL);
1622 time64_t enough_time = ktime_get_seconds() + DISK_TIMEOUT;
1628 if (!(oa->o_valid & OBD_MD_FLFLAGS) ||
1629 !(oa->o_flags & OBD_FL_DELORPHAN)) {
1630 /* don't enforce grant during orphan recovery */
1631 granted = tgt_grant_create(tsi->tsi_env,
1632 ofd_obd(ofd)->obd_self_export,
1637 CDEBUG(D_HA, "%s: failed to acquire grant "
1638 "space for precreate (%lld): rc = %d\n",
1639 ofd_name(ofd), diff, rc);
1644 /* This can happen if a new OST is formatted and installed
1645 * in place of an old one at the same index. Instead of
1646 * precreating potentially millions of deleted old objects
1647 * (possibly filling the OST), only precreate the last batch.
1648 * LFSCK will eventually clean up any orphans. LU-14 */
1649 if (diff > 5 * OST_MAX_PRECREATE) {
1650 diff = OST_MAX_PRECREATE / 2;
1651 LCONSOLE_WARN("%s: Too many FIDs to precreate "
1652 "OST replaced or reformatted: "
1653 "LFSCK will clean up",
1656 CDEBUG(D_HA, "%s: precreate FID "DOSTID" is over "
1657 "%u larger than the LAST_ID "DOSTID", only "
1658 "precreating the last %lld objects.\n",
1659 ofd_name(ofd), POSTID(&oa->o_oi),
1660 5 * OST_MAX_PRECREATE,
1661 POSTID(&oseq->os_oi), diff);
1662 ofd_seq_last_oid_set(oseq, ostid_id(&oa->o_oi) - diff);
1666 next_id = ofd_seq_last_oid(oseq) + 1;
1667 count = ofd_precreate_batch(ofd, (int)diff);
1669 CDEBUG(D_HA, "%s: reserve %d objects in group %#llx"
1670 " at %llu\n", ofd_name(ofd),
1671 count, seq, next_id);
1673 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
1674 && ktime_get_seconds() > enough_time) {
1675 CDEBUG(D_HA, "%s: Slow creates, %d/%lld objects"
1676 " created at a rate of %d/s\n",
1677 ofd_name(ofd), created, diff + created,
1678 created / DISK_TIMEOUT);
1682 rc = ofd_precreate_objects(tsi->tsi_env, ofd, next_id,
1683 oseq, count, sync_trans);
1687 } else if (rc < 0) {
1693 lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
1694 LCONSOLE_WARN("%s: can't create the same count of"
1695 " objects when replaying the request"
1696 " (diff is %lld). see LU-4621\n",
1697 ofd_name(ofd), diff);
1700 /* some objects got created, we can return
1701 * them, even if last creation failed */
1704 CERROR("%s: unable to precreate: rc = %d\n",
1707 if (!(oa->o_valid & OBD_MD_FLFLAGS) ||
1708 !(oa->o_flags & OBD_FL_DELORPHAN)) {
1709 tgt_grant_commit(ofd_obd(ofd)->obd_self_export,
1714 rc2 = ostid_set_id(&rep_oa->o_oi, ofd_seq_last_oid(oseq));
1718 ofd_counter_incr(exp, LPROC_OFD_STATS_CREATE,
1720 if (unlikely(!oseq->os_last_id_synced))
1721 oseq->os_last_id_synced = 1;
1723 mutex_unlock(&oseq->os_create_lock);
1726 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 8, 53, 0)
1727 struct ofd_thread_info *info = ofd_info(tsi->tsi_env);
1728 struct lu_fid *fid = &info->fti_fid;
1730 /* For compatible purpose, it needs to convert back to
1731 * OST ID before put it on wire. */
1732 *fid = rep_oa->o_oi.oi_fid;
1733 fid_to_ostid(fid, &rep_oa->o_oi);
1735 rep_oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP;
1737 ofd_seq_put(tsi->tsi_env, oseq);
1740 up_read(&ofd->ofd_lastid_rwsem);
1745 * OFD request handler for OST_DESTROY RPC.
1747 * This is OFD-specific part of request handling. It destroys data objects
1748 * related to destroyed object on MDT.
1750 * \param[in] tsi target session environment for this request
1752 * \retval 0 if successful
1753 * \retval negative value on error
1755 static int ofd_destroy_hdl(struct tgt_session_info *tsi)
1757 const struct ost_body *body = tsi->tsi_ost_body;
1758 struct ost_body *repbody;
1759 struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
1760 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1761 struct lu_fid *fid = &fti->fti_fid;
1768 if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS))
1771 /* This is old case for clients before Lustre 2.4 */
1772 /* If there's a DLM request, cancel the locks mentioned in it */
1773 if (req_capsule_field_present(tsi->tsi_pill, &RMF_DLM_REQ,
1775 struct ldlm_request *dlm;
1777 dlm = req_capsule_client_get(tsi->tsi_pill, &RMF_DLM_REQ);
1780 ldlm_request_cancel(tgt_ses_req(tsi), dlm, 0, LATF_SKIP);
1783 *fid = body->oa.o_oi.oi_fid;
1784 oid = ostid_id(&body->oa.o_oi);
1787 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1789 /* check that o_misc makes sense */
1790 if (body->oa.o_valid & OBD_MD_FLOBJCOUNT)
1791 count = body->oa.o_misc;
1793 count = 1; /* default case - single destroy */
1795 CDEBUG(D_HA, "%s: Destroy object "DOSTID" count %d\n", ofd_name(ofd),
1796 POSTID(&body->oa.o_oi), count);
1801 lrc = ofd_destroy_by_fid(tsi->tsi_env, ofd, fid, 0);
1802 if (lrc == -ENOENT) {
1804 "%s: destroying non-existent object "DFID"\n",
1805 ofd_name(ofd), PFID(fid));
1806 /* rewrite rc with -ENOENT only if it is 0 */
1809 } else if (lrc != 0) {
1810 CERROR("%s: error destroying object "DFID": %d\n",
1811 ofd_name(ofd), PFID(fid), lrc);
1817 lrc = fid_set_id(fid, oid);
1818 if (unlikely(lrc != 0 && count > 0))
1819 GOTO(out, rc = lrc);
1822 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_DESTROY,
1828 fid_to_ostid(fid, &repbody->oa.o_oi);
1833 * OFD request handler for OST_STATFS RPC.
1835 * This function gets statfs data from storage as part of request
1838 * \param[in] tsi target session environment for this request
1840 * \retval 0 if successful
1841 * \retval negative value on error
1843 static int ofd_statfs_hdl(struct tgt_session_info *tsi)
1845 struct obd_statfs *osfs;
1850 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_STATFS_DELAY, 10);
1852 osfs = req_capsule_server_get(tsi->tsi_pill, &RMF_OBD_STATFS);
1854 rc = ofd_statfs(tsi->tsi_env, tsi->tsi_exp, osfs,
1855 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS, 0);
1857 CERROR("%s: statfs failed: rc = %d\n",
1858 tgt_name(tsi->tsi_tgt), rc);
1860 if (OBD_FAIL_CHECK(OBD_FAIL_OST_STATFS_EINPROGRESS))
1863 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_STATFS,
1870 * OFD request handler for OST_SYNC RPC.
1872 * Sync object data or all filesystem data to the disk and pack the
1875 * \param[in] tsi target session environment for this request
1877 * \retval 0 if successful
1878 * \retval negative value on error
1880 static int ofd_sync_hdl(struct tgt_session_info *tsi)
1882 struct ost_body *body = tsi->tsi_ost_body;
1883 struct ost_body *repbody;
1884 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1885 struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
1886 struct ofd_object *fo = NULL;
1891 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1893 /* if no objid is specified, it means "sync whole filesystem" */
1894 if (!fid_is_zero(&tsi->tsi_fid)) {
1895 fo = ofd_object_find_exists(tsi->tsi_env, ofd, &tsi->tsi_fid);
1897 RETURN(PTR_ERR(fo));
1900 rc = tgt_sync(tsi->tsi_env, tsi->tsi_tgt,
1901 fo != NULL ? ofd_object_child(fo) : NULL,
1902 repbody->oa.o_size, repbody->oa.o_blocks);
1906 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SYNC,
1911 repbody->oa.o_oi = body->oa.o_oi;
1912 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1914 rc = ofd_attr_get(tsi->tsi_env, fo, &fti->fti_attr);
1916 obdo_from_la(&repbody->oa, &fti->fti_attr,
1919 /* don't return rc from getattr */
1924 ofd_object_put(tsi->tsi_env, fo);
1929 * OFD request handler for OST_PUNCH RPC.
1931 * This is part of request processing. Validate request fields,
1932 * punch (truncate) the given OFD object and pack reply.
1934 * \param[in] tsi target session environment for this request
1936 * \retval 0 if successful
1937 * \retval negative value on error
1939 static int ofd_punch_hdl(struct tgt_session_info *tsi)
1941 const struct obdo *oa = &tsi->tsi_ost_body->oa;
1942 struct ost_body *repbody;
1943 struct ofd_thread_info *info = tsi2ofd_info(tsi);
1944 struct ldlm_namespace *ns = tsi->tsi_tgt->lut_obd->obd_namespace;
1945 struct ldlm_resource *res;
1946 struct ofd_object *fo;
1948 struct lustre_handle lh = { 0, };
1955 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_PAUSE_PUNCH, cfs_fail_val);
1957 /* check that we do support OBD_CONNECT_TRUNCLOCK. */
1958 CLASSERT(OST_CONNECT_SUPPORTED & OBD_CONNECT_TRUNCLOCK);
1960 if ((oa->o_valid & (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS)) !=
1961 (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS))
1962 RETURN(err_serious(-EPROTO));
1964 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1965 if (repbody == NULL)
1966 RETURN(err_serious(-ENOMEM));
1968 /* punch start,end are passed in o_size,o_blocks throught wire */
1972 if (end != OBD_OBJECT_EOF) /* Only truncate is supported */
1975 /* standard truncate optimization: if file body is completely
1976 * destroyed, don't send data back to the server. */
1978 flags |= LDLM_FL_AST_DISCARD_DATA;
1980 repbody->oa.o_oi = oa->o_oi;
1981 repbody->oa.o_valid = OBD_MD_FLID;
1983 srvlock = oa->o_valid & OBD_MD_FLFLAGS &&
1984 oa->o_flags & OBD_FL_SRVLOCK;
1987 rc = tgt_extent_lock(tsi->tsi_env, ns, &tsi->tsi_resid, start,
1988 end, &lh, LCK_PW, &flags);
1993 CDEBUG(D_INODE, "calling punch for object "DFID", valid = %#llx"
1994 ", start = %lld, end = %lld\n", PFID(&tsi->tsi_fid),
1995 oa->o_valid, start, end);
1997 fo = ofd_object_find_exists(tsi->tsi_env, ofd_exp(tsi->tsi_exp),
2000 GOTO(out, rc = PTR_ERR(fo));
2002 la_from_obdo(&info->fti_attr, oa,
2003 OBD_MD_FLMTIME | OBD_MD_FLATIME | OBD_MD_FLCTIME);
2004 info->fti_attr.la_size = start;
2005 info->fti_attr.la_valid |= LA_SIZE;
2007 rc = ofd_object_punch(tsi->tsi_env, fo, start, end, &info->fti_attr,
2012 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_PUNCH,
2016 ofd_object_put(tsi->tsi_env, fo);
2019 tgt_extent_unlock(&lh, LCK_PW);
2021 /* we do not call this before to avoid lu_object_find() in
2022 * ->lvbo_update() holding another reference on the object.
2023 * otherwise concurrent destroy can make the object unavailable
2024 * for 2nd lu_object_find() waiting for the first reference
2025 * to go... deadlock! */
2026 res = ldlm_resource_get(ns, NULL, &tsi->tsi_resid,
2029 struct ost_lvb *res_lvb;
2031 ldlm_res_lvbo_update(res, NULL, 0);
2032 res_lvb = res->lr_lvb_data;
2033 repbody->oa.o_valid |= OBD_MD_FLBLOCKS;
2034 repbody->oa.o_blocks = res_lvb->lvb_blocks;
2035 ldlm_resource_putref(res);
2041 static int ofd_ladvise_prefetch(const struct lu_env *env,
2042 struct ofd_object *fo,
2043 struct niobuf_local *lnb,
2044 __u64 start, __u64 end, enum dt_bufs_type dbt)
2046 struct ofd_thread_info *info = ofd_info(env);
2047 pgoff_t start_index, end_index, pages;
2048 struct niobuf_remote rnb;
2049 unsigned long nr_local;
2055 ofd_read_lock(env, fo);
2056 if (!ofd_object_exists(fo))
2057 GOTO(out_unlock, rc = -ENOENT);
2059 rc = ofd_attr_get(env, fo, &info->fti_attr);
2061 GOTO(out_unlock, rc);
2063 if (end > info->fti_attr.la_size)
2064 end = info->fti_attr.la_size;
2067 GOTO(out_unlock, rc);
2069 /* We need page aligned offset and length */
2070 start_index = start >> PAGE_SHIFT;
2071 end_index = (end - 1) >> PAGE_SHIFT;
2072 pages = end_index - start_index + 1;
2074 nr_local = pages <= PTLRPC_MAX_BRW_PAGES ? pages :
2075 PTLRPC_MAX_BRW_PAGES;
2076 rnb.rnb_offset = start_index << PAGE_SHIFT;
2077 rnb.rnb_len = nr_local << PAGE_SHIFT;
2078 rc = dt_bufs_get(env, ofd_object_child(fo), &rnb, lnb, dbt);
2079 if (unlikely(rc < 0))
2082 rc = dt_read_prep(env, ofd_object_child(fo), lnb, nr_local);
2083 dt_bufs_put(env, ofd_object_child(fo), lnb, nr_local);
2086 start_index += nr_local;
2091 ofd_read_unlock(env, fo);
2096 * OFD request handler for OST_LADVISE RPC.
2098 * Tune cache or perfetch policies according to advices.
2100 * \param[in] tsi target session environment for this request
2102 * \retval 0 if successful
2103 * \retval negative errno on error
2105 static int ofd_ladvise_hdl(struct tgt_session_info *tsi)
2107 struct ptlrpc_request *req = tgt_ses_req(tsi);
2108 struct obd_export *exp = tsi->tsi_exp;
2109 struct ofd_device *ofd = ofd_exp(exp);
2110 struct ost_body *body, *repbody;
2111 struct ofd_thread_info *info;
2112 struct ofd_object *fo;
2113 struct ptlrpc_thread *svc_thread = req->rq_svc_thread;
2114 const struct lu_env *env = svc_thread->t_env;
2115 struct tgt_thread_big_cache *tbc = svc_thread->t_data;
2116 enum dt_bufs_type dbt = DT_BUFS_TYPE_READAHEAD;
2117 struct lu_ladvise *ladvise;
2119 struct ladvise_hdr *ladvise_hdr;
2120 struct obd_ioobj ioo;
2121 struct lustre_handle lockh = { 0 };
2124 struct dt_object *dob;
2130 CFS_FAIL_TIMEOUT(OBD_FAIL_OST_LADVISE_PAUSE, cfs_fail_val);
2131 body = tsi->tsi_ost_body;
2133 if ((body->oa.o_valid & OBD_MD_FLID) != OBD_MD_FLID)
2134 RETURN(err_serious(-EPROTO));
2136 ladvise_hdr = req_capsule_client_get(tsi->tsi_pill,
2137 &RMF_OST_LADVISE_HDR);
2138 if (ladvise_hdr == NULL)
2139 RETURN(err_serious(-EPROTO));
2141 if (ladvise_hdr->lah_magic != LADVISE_MAGIC ||
2142 ladvise_hdr->lah_count < 1)
2143 RETURN(err_serious(-EPROTO));
2145 if ((ladvise_hdr->lah_flags & (~LF_MASK)) != 0)
2146 RETURN(err_serious(-EPROTO));
2148 ladvise = req_capsule_client_get(tsi->tsi_pill, &RMF_OST_LADVISE);
2149 if (ladvise == NULL)
2150 RETURN(err_serious(-EPROTO));
2152 num_advise = req_capsule_get_size(&req->rq_pill,
2153 &RMF_OST_LADVISE, RCL_CLIENT) /
2155 if (num_advise < ladvise_hdr->lah_count)
2156 RETURN(err_serious(-EPROTO));
2158 repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
2159 repbody->oa = body->oa;
2161 info = ofd_info_init(env, exp);
2163 rc = ostid_to_fid(&info->fti_fid, &body->oa.o_oi,
2164 ofd->ofd_lut.lut_lsd.lsd_osd_index);
2168 fo = ofd_object_find(env, ofd, &info->fti_fid);
2173 LASSERT(fo != NULL);
2174 dob = ofd_object_child(fo);
2176 if (ptlrpc_connection_is_local(exp->exp_connection))
2177 dbt |= DT_BUFS_TYPE_LOCAL;
2179 for (i = 0; i < num_advise; i++, ladvise++) {
2180 start = ladvise->lla_start;
2181 end = ladvise->lla_end;
2183 rc = err_serious(-EPROTO);
2187 /* Handle different advice types */
2188 switch (ladvise->lla_advice) {
2192 case LU_LADVISE_WILLREAD:
2196 ioo.ioo_oid = body->oa.o_oi;
2198 rc = tgt_extent_lock(env, exp->exp_obd->obd_namespace,
2199 &tsi->tsi_resid, start, end - 1,
2200 &lockh, LCK_PR, &flags);
2204 req->rq_status = ofd_ladvise_prefetch(env, fo,
2207 tgt_extent_unlock(&lockh, LCK_PR);
2209 case LU_LADVISE_DONTNEED:
2210 rc = dt_ladvise(env, dob, ladvise->lla_start,
2211 ladvise->lla_end, LU_LADVISE_DONTNEED);
2218 ofd_object_put(env, fo);
2219 req->rq_status = rc;
2224 * OFD request handler for OST_QUOTACTL RPC.
2226 * This is part of request processing to validate incoming request fields,
2227 * get the requested data from OSD and pack reply.
2229 * \param[in] tsi target session environment for this request
2231 * \retval 0 if successful
2232 * \retval negative value on error
2234 static int ofd_quotactl(struct tgt_session_info *tsi)
2236 struct obd_quotactl *oqctl, *repoqc;
2237 struct lu_nodemap *nodemap;
2243 oqctl = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_QUOTACTL);
2245 RETURN(err_serious(-EPROTO));
2247 repoqc = req_capsule_server_get(tsi->tsi_pill, &RMF_OBD_QUOTACTL);
2249 RETURN(err_serious(-ENOMEM));
2253 nodemap = nodemap_get_from_exp(tsi->tsi_exp);
2254 if (IS_ERR(nodemap))
2255 RETURN(PTR_ERR(nodemap));
2258 if (oqctl->qc_type == USRQUOTA)
2259 id = nodemap_map_id(nodemap, NODEMAP_UID,
2260 NODEMAP_CLIENT_TO_FS,
2262 else if (oqctl->qc_type == GRPQUOTA)
2263 id = nodemap_map_id(nodemap, NODEMAP_GID,
2264 NODEMAP_CLIENT_TO_FS,
2267 nodemap_putref(nodemap);
2269 if (repoqc->qc_id != id)
2270 swap(repoqc->qc_id, id);
2272 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom, repoqc);
2274 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_QUOTACTL,
2277 if (repoqc->qc_id != id)
2278 swap(repoqc->qc_id, id);
2284 * Calculate the amount of time for lock prolongation.
2286 * This is helper for ofd_prolong_extent_locks() function to get
2287 * the timeout extra time.
2289 * \param[in] req current request
2291 * \retval amount of time to extend the timeout with
2293 static inline time64_t prolong_timeout(struct ptlrpc_request *req)
2295 struct ptlrpc_service_part *svcpt = req->rq_rqbd->rqbd_svcpt;
2296 time64_t req_timeout;
2299 return obd_timeout / 2;
2301 req_timeout = req->rq_deadline - req->rq_arrival_time.tv_sec;
2302 return max_t(time64_t, at_est2timeout(at_get(&svcpt->scp_at_estimate)),
2307 * Prolong lock timeout for the given extent.
2309 * This function finds all locks related with incoming request and
2310 * prolongs their timeout.
2312 * If a client is holding a lock for a long time while it sends
2313 * read or write RPCs to the OST for the object under this lock,
2314 * then we don't want the OST to evict the client. Otherwise,
2315 * if the network or disk is very busy then the client may not
2316 * be able to make any progress to clear out dirty pages under
2317 * the lock and the application will fail.
2319 * Every time a Bulk Read/Write (BRW) request arrives for the object
2320 * covered by the lock, extend the timeout on that lock. The RPC should
2321 * contain a lock handle for the lock it is using, but this
2322 * isn't handled correctly by all client versions, and the
2323 * request may cover multiple locks.
2325 * \param[in] tsi target session environment for this request
2326 * \param[in] data struct of data to prolong locks
2329 static void ofd_prolong_extent_locks(struct tgt_session_info *tsi,
2330 struct ldlm_prolong_args *data)
2332 struct obdo *oa = &tsi->tsi_ost_body->oa;
2333 struct ldlm_lock *lock;
2337 data->lpa_timeout = prolong_timeout(tgt_ses_req(tsi));
2338 data->lpa_export = tsi->tsi_exp;
2339 data->lpa_resid = tsi->tsi_resid;
2341 CDEBUG(D_RPCTRACE, "Prolong locks for req %p with x%llu"
2342 " ext(%llu->%llu)\n", tgt_ses_req(tsi),
2343 tgt_ses_req(tsi)->rq_xid, data->lpa_extent.start,
2344 data->lpa_extent.end);
2346 if (oa->o_valid & OBD_MD_FLHANDLE) {
2347 /* mostly a request should be covered by only one lock, try
2349 lock = ldlm_handle2lock(&oa->o_handle);
2351 /* Fast path to check if the lock covers the whole IO
2352 * region exclusively. */
2353 if (ldlm_extent_contain(&lock->l_policy_data.l_extent,
2354 &data->lpa_extent)) {
2356 LASSERT(lock->l_export == data->lpa_export);
2357 ldlm_lock_prolong_one(lock, data);
2358 LDLM_LOCK_PUT(lock);
2359 if (data->lpa_locks_cnt > 0)
2361 /* The lock was destroyed probably lets try
2364 lock->l_last_used = ktime_get();
2365 LDLM_LOCK_PUT(lock);
2370 ldlm_resource_prolong(data);
2375 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_match for OFD RW requests.
2377 * Determine if \a lock and the lock from request \a req are equivalent
2378 * by comparing their resource names, modes, and extents.
2380 * It is used to give priority to read and write RPCs being done
2381 * under this lock so that the client can drop the contended
2382 * lock more quickly and let other clients use it. This improves
2383 * overall performance in the case where the first client gets a
2384 * very large lock extent that prevents other clients from
2385 * submitting their writes.
2387 * \param[in] req ptlrpc_request being processed
2388 * \param[in] lock contended lock to match
2390 * \retval 1 if lock is matched
2391 * \retval 0 otherwise
2393 static int ofd_rw_hpreq_lock_match(struct ptlrpc_request *req,
2394 struct ldlm_lock *lock)
2396 struct niobuf_remote *rnb;
2397 struct obd_ioobj *ioo;
2398 enum ldlm_mode mode;
2399 struct ldlm_extent ext;
2400 __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
2404 ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
2405 LASSERT(ioo != NULL);
2407 rnb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
2408 LASSERT(rnb != NULL);
2410 ext.start = rnb->rnb_offset;
2411 rnb += ioo->ioo_bufcnt - 1;
2412 ext.end = rnb->rnb_offset + rnb->rnb_len - 1;
2414 LASSERT(lock->l_resource != NULL);
2415 if (!ostid_res_name_eq(&ioo->ioo_oid, &lock->l_resource->lr_name))
2418 /* a bulk write can only hold a reference on a PW extent lock
2421 mode = LCK_PW | LCK_GROUP;
2422 if (opc == OST_READ)
2423 /* whereas a bulk read can be protected by either a PR or PW
2427 if (!(lock->l_granted_mode & mode))
2430 RETURN(ldlm_extent_overlap(&lock->l_policy_data.l_extent, &ext));
2434 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_check for OFD RW requests.
2436 * Check for whether the given PTLRPC request (\a req) is blocking
2437 * an LDLM lock cancel. Also checks whether the request is covered by an LDLM
2440 * \param[in] req the incoming request
2442 * \retval 1 if \a req is blocking an LDLM lock cancel
2443 * \retval 0 if it is not
2444 * \retval -ESTALE if lock is not found
2446 static int ofd_rw_hpreq_check(struct ptlrpc_request *req)
2448 struct tgt_session_info *tsi;
2449 struct obd_ioobj *ioo;
2450 struct niobuf_remote *rnb;
2452 struct ldlm_prolong_args pa = { 0 };
2456 /* Don't use tgt_ses_info() to get session info, because lock_match()
2457 * can be called while request has no processing thread yet. */
2458 tsi = lu_context_key_get(&req->rq_session, &tgt_session_key);
2461 * Use LASSERT below because malformed RPCs should have
2462 * been filtered out in tgt_hpreq_handler().
2464 opc = lustre_msg_get_opc(req->rq_reqmsg);
2465 LASSERT(opc == OST_READ || opc == OST_WRITE);
2467 ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
2468 LASSERT(ioo != NULL);
2470 rnb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
2471 LASSERT(rnb != NULL);
2472 LASSERT(!(rnb->rnb_flags & OBD_BRW_SRVLOCK));
2474 pa.lpa_mode = LCK_PW | LCK_GROUP;
2475 if (opc == OST_READ)
2476 pa.lpa_mode |= LCK_PR;
2478 pa.lpa_extent.start = rnb->rnb_offset;
2479 rnb += ioo->ioo_bufcnt - 1;
2480 pa.lpa_extent.end = rnb->rnb_offset + rnb->rnb_len - 1;
2482 DEBUG_REQ(D_RPCTRACE, req, "%s %s: refresh rw locks: "DFID
2483 " (%llu->%llu)\n", tgt_name(tsi->tsi_tgt),
2484 current->comm, PFID(&tsi->tsi_fid), pa.lpa_extent.start,
2487 ofd_prolong_extent_locks(tsi, &pa);
2489 CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p.\n",
2490 tgt_name(tsi->tsi_tgt), pa.lpa_blocks_cnt, req);
2492 if (pa.lpa_blocks_cnt > 0)
2495 RETURN(pa.lpa_locks_cnt > 0 ? 0 : -ESTALE);
2499 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_fini for OFD RW requests.
2501 * Called after the request has been handled. It refreshes lock timeout again
2502 * so that client has more time to send lock cancel RPC.
2504 * \param[in] req request which is being processed.
2506 static void ofd_rw_hpreq_fini(struct ptlrpc_request *req)
2508 ofd_rw_hpreq_check(req);
2512 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_match for OST_PUNCH request.
2514 * This function checks if the given lock is the same by its resname, mode
2515 * and extent as one taken from the request.
2516 * It is used to give priority to punch/truncate RPCs that might lead to
2517 * the fastest release of that lock when a lock is contended.
2519 * \param[in] req ptlrpc_request being processed
2520 * \param[in] lock contended lock to match
2522 * \retval 1 if lock is matched
2523 * \retval 0 otherwise
2525 static int ofd_punch_hpreq_lock_match(struct ptlrpc_request *req,
2526 struct ldlm_lock *lock)
2528 struct tgt_session_info *tsi;
2530 struct ldlm_extent ext;
2534 /* Don't use tgt_ses_info() to get session info, because lock_match()
2535 * can be called while request has no processing thread yet. */
2536 tsi = lu_context_key_get(&req->rq_session, &tgt_session_key);
2539 * Use LASSERT below because malformed RPCs should have
2540 * been filtered out in tgt_hpreq_handler().
2542 LASSERT(tsi->tsi_ost_body != NULL);
2543 if (tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLHANDLE &&
2544 tsi->tsi_ost_body->oa.o_handle.cookie == lock->l_handle.h_cookie)
2547 oa = &tsi->tsi_ost_body->oa;
2548 ext.start = oa->o_size;
2549 ext.end = oa->o_blocks;
2551 LASSERT(lock->l_resource != NULL);
2552 if (!ostid_res_name_eq(&oa->o_oi, &lock->l_resource->lr_name))
2555 if (!(lock->l_granted_mode & (LCK_PW | LCK_GROUP)))
2558 RETURN(ldlm_extent_overlap(&lock->l_policy_data.l_extent, &ext));
2562 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_check for OST_PUNCH request.
2564 * High-priority queue request check for whether the given punch request
2565 * (\a req) is blocking an LDLM lock cancel. Also checks whether the request is
2566 * covered by an LDLM lock.
2570 * \param[in] req the incoming request
2572 * \retval 1 if \a req is blocking an LDLM lock cancel
2573 * \retval 0 if it is not
2574 * \retval -ESTALE if lock is not found
2576 static int ofd_punch_hpreq_check(struct ptlrpc_request *req)
2578 struct tgt_session_info *tsi;
2580 struct ldlm_prolong_args pa = { 0 };
2584 /* Don't use tgt_ses_info() to get session info, because lock_match()
2585 * can be called while request has no processing thread yet. */
2586 tsi = lu_context_key_get(&req->rq_session, &tgt_session_key);
2587 LASSERT(tsi != NULL);
2588 oa = &tsi->tsi_ost_body->oa;
2590 LASSERT(!(oa->o_valid & OBD_MD_FLFLAGS &&
2591 oa->o_flags & OBD_FL_SRVLOCK));
2593 pa.lpa_mode = LCK_PW | LCK_GROUP;
2594 pa.lpa_extent.start = oa->o_size;
2595 pa.lpa_extent.end = oa->o_blocks;
2598 "%s: refresh locks: %llu/%llu (%llu->%llu)\n",
2599 tgt_name(tsi->tsi_tgt), tsi->tsi_resid.name[0],
2600 tsi->tsi_resid.name[1], pa.lpa_extent.start, pa.lpa_extent.end);
2602 ofd_prolong_extent_locks(tsi, &pa);
2604 CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p.\n",
2605 tgt_name(tsi->tsi_tgt), pa.lpa_blocks_cnt, req);
2607 if (pa.lpa_blocks_cnt > 0)
2610 RETURN(pa.lpa_locks_cnt > 0 ? 0 : -ESTALE);
2614 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_fini for OST_PUNCH request.
2616 * Called after the request has been handled. It refreshes lock timeout again
2617 * so that client has more time to send lock cancel RPC.
2619 * \param[in] req request which is being processed.
2621 static void ofd_punch_hpreq_fini(struct ptlrpc_request *req)
2623 ofd_punch_hpreq_check(req);
2626 static struct ptlrpc_hpreq_ops ofd_hpreq_rw = {
2627 .hpreq_lock_match = ofd_rw_hpreq_lock_match,
2628 .hpreq_check = ofd_rw_hpreq_check,
2629 .hpreq_fini = ofd_rw_hpreq_fini
2632 static struct ptlrpc_hpreq_ops ofd_hpreq_punch = {
2633 .hpreq_lock_match = ofd_punch_hpreq_lock_match,
2634 .hpreq_check = ofd_punch_hpreq_check,
2635 .hpreq_fini = ofd_punch_hpreq_fini
2639 * Assign high priority operations to an IO request.
2641 * Check if the incoming request is a candidate for
2642 * high-priority processing. If it is, assign it a high
2643 * priority operations table.
2645 * \param[in] tsi target session environment for this request
2647 static void ofd_hp_brw(struct tgt_session_info *tsi)
2649 struct niobuf_remote *rnb;
2650 struct obd_ioobj *ioo;
2654 ioo = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_IOOBJ);
2655 LASSERT(ioo != NULL); /* must exist after request preprocessing */
2656 if (ioo->ioo_bufcnt > 0) {
2657 rnb = req_capsule_client_get(tsi->tsi_pill, &RMF_NIOBUF_REMOTE);
2658 LASSERT(rnb != NULL); /* must exist after request preprocessing */
2660 /* no high priority if server lock is needed */
2661 if (rnb->rnb_flags & OBD_BRW_SRVLOCK ||
2662 (lustre_msg_get_flags(tgt_ses_req(tsi)->rq_reqmsg)
2666 tgt_ses_req(tsi)->rq_ops = &ofd_hpreq_rw;
2670 * Assign high priority operations to an punch request.
2672 * Check if the incoming request is a candidate for
2673 * high-priority processing. If it is, assign it a high
2674 * priority operations table.
2676 * \param[in] tsi target session environment for this request
2678 static void ofd_hp_punch(struct tgt_session_info *tsi)
2680 LASSERT(tsi->tsi_ost_body != NULL); /* must exists if we are here */
2681 /* no high-priority if server lock is needed */
2682 if ((tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLFLAGS &&
2683 tsi->tsi_ost_body->oa.o_flags & OBD_FL_SRVLOCK) ||
2684 tgt_conn_flags(tsi) & OBD_CONNECT_MDS ||
2685 lustre_msg_get_flags(tgt_ses_req(tsi)->rq_reqmsg) & MSG_REPLAY)
2687 tgt_ses_req(tsi)->rq_ops = &ofd_hpreq_punch;
2690 #define OBD_FAIL_OST_READ_NET OBD_FAIL_OST_BRW_NET
2691 #define OBD_FAIL_OST_WRITE_NET OBD_FAIL_OST_BRW_NET
2692 #define OST_BRW_READ OST_READ
2693 #define OST_BRW_WRITE OST_WRITE
2696 * Table of OFD-specific request handlers
2698 * This table contains all opcodes accepted by OFD and
2699 * specifies handlers for them. The tgt_request_handler()
2700 * uses such table from each target to process incoming
2703 static struct tgt_handler ofd_tgt_handlers[] = {
2704 TGT_RPC_HANDLER(OST_FIRST_OPC,
2705 0, OST_CONNECT, tgt_connect,
2706 &RQF_CONNECT, LUSTRE_OBD_VERSION),
2707 TGT_RPC_HANDLER(OST_FIRST_OPC,
2708 0, OST_DISCONNECT, tgt_disconnect,
2709 &RQF_OST_DISCONNECT, LUSTRE_OBD_VERSION),
2710 TGT_RPC_HANDLER(OST_FIRST_OPC,
2711 0, OST_SET_INFO, ofd_set_info_hdl,
2712 &RQF_OBD_SET_INFO, LUSTRE_OST_VERSION),
2713 TGT_OST_HDL(0, OST_GET_INFO, ofd_get_info_hdl),
2714 TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_GETATTR, ofd_getattr_hdl),
2715 TGT_OST_HDL(HAS_BODY | HAS_REPLY | IS_MUTABLE,
2716 OST_SETATTR, ofd_setattr_hdl),
2717 TGT_OST_HDL(HAS_REPLY | IS_MUTABLE,
2718 OST_CREATE, ofd_create_hdl),
2719 TGT_OST_HDL(HAS_REPLY | IS_MUTABLE,
2720 OST_DESTROY, ofd_destroy_hdl),
2721 TGT_OST_HDL(HAS_REPLY, OST_STATFS, ofd_statfs_hdl),
2722 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY, OST_BRW_READ, tgt_brw_read,
2724 /* don't set CORPUS flag for brw_write because -ENOENT may be valid case */
2725 TGT_OST_HDL_HP(HAS_BODY | IS_MUTABLE, OST_BRW_WRITE, tgt_brw_write,
2727 TGT_OST_HDL_HP(HAS_BODY | HAS_REPLY | IS_MUTABLE,
2728 OST_PUNCH, ofd_punch_hdl,
2730 TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_SYNC, ofd_sync_hdl),
2731 TGT_OST_HDL(HAS_REPLY, OST_QUOTACTL, ofd_quotactl),
2732 TGT_OST_HDL(HAS_BODY | HAS_REPLY, OST_LADVISE, ofd_ladvise_hdl),
2735 static struct tgt_opc_slice ofd_common_slice[] = {
2737 .tos_opc_start = OST_FIRST_OPC,
2738 .tos_opc_end = OST_LAST_OPC,
2739 .tos_hs = ofd_tgt_handlers
2742 .tos_opc_start = OBD_FIRST_OPC,
2743 .tos_opc_end = OBD_LAST_OPC,
2744 .tos_hs = tgt_obd_handlers
2747 .tos_opc_start = LDLM_FIRST_OPC,
2748 .tos_opc_end = LDLM_LAST_OPC,
2749 .tos_hs = tgt_dlm_handlers
2752 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
2753 .tos_opc_end = OUT_UPDATE_LAST_OPC,
2754 .tos_hs = tgt_out_handlers
2757 .tos_opc_start = SEQ_FIRST_OPC,
2758 .tos_opc_end = SEQ_LAST_OPC,
2759 .tos_hs = seq_handlers
2762 .tos_opc_start = LFSCK_FIRST_OPC,
2763 .tos_opc_end = LFSCK_LAST_OPC,
2764 .tos_hs = tgt_lfsck_handlers
2767 .tos_opc_start = SEC_FIRST_OPC,
2768 .tos_opc_end = SEC_LAST_OPC,
2769 .tos_hs = tgt_sec_ctx_handlers
2776 /* context key constructor/destructor: ofd_key_init(), ofd_key_fini() */
2777 LU_KEY_INIT_FINI(ofd, struct ofd_thread_info);
2780 * Implementation of lu_context_key::lct_key_exit.
2782 * Optional method called on lu_context_exit() for all allocated
2784 * It is used in OFD to sanitize context values which may be re-used
2785 * during another request processing by the same thread.
2787 * \param[in] ctx execution context
2788 * \param[in] key context key
2789 * \param[in] data ofd_thread_info
2791 static void ofd_key_exit(const struct lu_context *ctx,
2792 struct lu_context_key *key, void *data)
2794 struct ofd_thread_info *info = data;
2796 info->fti_env = NULL;
2797 info->fti_exp = NULL;
2800 info->fti_pre_version = 0;
2802 memset(&info->fti_attr, 0, sizeof info->fti_attr);
2805 struct lu_context_key ofd_thread_key = {
2806 .lct_tags = LCT_DT_THREAD,
2807 .lct_init = ofd_key_init,
2808 .lct_fini = ofd_key_fini,
2809 .lct_exit = ofd_key_exit
2813 * Initialize OFD device according to parameters in the config log \a cfg.
2815 * This is the main starting point of OFD initialization. It fills all OFD
2816 * parameters with their initial values and calls other initializing functions
2817 * to set up all OFD subsystems.
2819 * \param[in] env execution environment
2820 * \param[in] m OFD device
2821 * \param[in] ldt LU device type of OFD
2822 * \param[in] cfg configuration log
2824 * \retval 0 if successful
2825 * \retval negative value on error
2827 static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
2828 struct lu_device_type *ldt, struct lustre_cfg *cfg)
2830 const char *dev = lustre_cfg_string(cfg, 0);
2831 struct ofd_thread_info *info = NULL;
2832 struct obd_device *obd;
2833 struct tg_grants_data *tgd = &m->ofd_lut.lut_tgd;
2835 struct nm_config_file *nodemap_config;
2836 struct obd_device_target *obt;
2841 obd = class_name2obd(dev);
2843 CERROR("Cannot find obd with name %s\n", dev);
2847 rc = lu_env_refill((struct lu_env *)env);
2852 obt->obt_magic = OBT_MAGIC;
2854 spin_lock_init(&m->ofd_flags_lock);
2855 m->ofd_raid_degraded = 0;
2856 m->ofd_checksum_t10pi_enforce = 0;
2857 m->ofd_sync_journal = 0;
2859 m->ofd_soft_sync_limit = OFD_SOFT_SYNC_LIMIT_DEFAULT;
2861 m->ofd_seq_count = 0;
2862 init_waitqueue_head(&m->ofd_inconsistency_thread.t_ctl_waitq);
2863 INIT_LIST_HEAD(&m->ofd_inconsistency_list);
2864 spin_lock_init(&m->ofd_inconsistency_lock);
2866 spin_lock_init(&m->ofd_batch_lock);
2867 init_rwsem(&m->ofd_lastid_rwsem);
2869 m->ofd_dt_dev.dd_lu_dev.ld_ops = &ofd_lu_ops;
2870 m->ofd_dt_dev.dd_lu_dev.ld_obd = obd;
2871 /* set this lu_device to obd, because error handling need it */
2872 obd->obd_lu_dev = &m->ofd_dt_dev.dd_lu_dev;
2874 /* No connection accepted until configurations will finish */
2875 spin_lock(&obd->obd_dev_lock);
2876 obd->obd_no_conn = 1;
2877 spin_unlock(&obd->obd_dev_lock);
2878 obd->obd_replayable = 1;
2879 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
2880 char *str = lustre_cfg_string(cfg, 4);
2882 if (strchr(str, 'n')) {
2883 CWARN("%s: recovery disabled\n", obd->obd_name);
2884 obd->obd_replayable = 0;
2888 info = ofd_info_init(env, NULL);
2892 rc = ofd_stack_init(env, m, cfg);
2894 CERROR("%s: can't init device stack, rc %d\n",
2899 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 14, 53, 0)
2900 ofd_procfs_add_brw_stats_symlink(m);
2903 snprintf(info->fti_u.name, sizeof(info->fti_u.name), "%s-%s",
2904 "filter"/*LUSTRE_OST_NAME*/, obd->obd_uuid.uuid);
2905 m->ofd_namespace = ldlm_namespace_new(obd, info->fti_u.name,
2906 LDLM_NAMESPACE_SERVER,
2907 LDLM_NAMESPACE_GREEDY,
2909 if (m->ofd_namespace == NULL)
2910 GOTO(err_fini_stack, rc = -ENOMEM);
2911 /* set obd_namespace for compatibility with old code */
2912 obd->obd_namespace = m->ofd_namespace;
2913 ldlm_register_intent(m->ofd_namespace, ofd_intent_policy);
2914 m->ofd_namespace->ns_lvbo = &ofd_lvbo;
2915 m->ofd_namespace->ns_lvbp = m;
2917 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
2918 "filter_ldlm_cb_client", &obd->obd_ldlm_client);
2920 rc = tgt_init(env, &m->ofd_lut, obd, m->ofd_osd, ofd_common_slice,
2921 OBD_FAIL_OST_ALL_REQUEST_NET,
2922 OBD_FAIL_OST_ALL_REPLY_NET);
2924 GOTO(err_free_ns, rc);
2926 rc = ofd_tunables_init(m);
2928 GOTO(err_fini_lut, rc);
2930 tgd->tgd_reserved_pcnt = 0;
2932 m->ofd_brw_size = m->ofd_lut.lut_dt_conf.ddp_brw_size;
2933 m->ofd_cksum_types_supported =
2934 obd_cksum_types_supported_server(obd->obd_name);
2935 m->ofd_precreate_batch = OFD_PRECREATE_BATCH_DEFAULT;
2936 if (tgd->tgd_osfs.os_bsize * tgd->tgd_osfs.os_blocks <
2937 OFD_PRECREATE_SMALL_FS)
2938 m->ofd_precreate_batch = OFD_PRECREATE_BATCH_SMALL;
2940 rc = ofd_fs_setup(env, m, obd);
2942 GOTO(err_fini_proc, rc);
2944 fid.f_seq = FID_SEQ_LOCAL_NAME;
2947 rc = local_oid_storage_init(env, m->ofd_osd, &fid,
2950 GOTO(err_fini_fs, rc);
2952 nodemap_config = nm_config_file_register_tgt(env, m->ofd_osd,
2954 if (IS_ERR(nodemap_config)) {
2955 rc = PTR_ERR(nodemap_config);
2957 GOTO(err_fini_los, rc);
2959 obt->obt_nodemap_config_file = nodemap_config;
2962 rc = ofd_start_inconsistency_verification_thread(m);
2964 GOTO(err_fini_nm, rc);
2966 tgt_adapt_sptlrpc_conf(&m->ofd_lut);
2971 nm_config_file_deregister_tgt(env, obt->obt_nodemap_config_file);
2972 obt->obt_nodemap_config_file = NULL;
2974 local_oid_storage_fini(env, m->ofd_los);
2977 ofd_fs_cleanup(env, m);
2981 tgt_fini(env, &m->ofd_lut);
2983 ldlm_namespace_free(m->ofd_namespace, NULL, obd->obd_force);
2984 obd->obd_namespace = m->ofd_namespace = NULL;
2986 ofd_stack_fini(env, m, &m->ofd_osd->dd_lu_dev);
2991 * Stop the OFD device
2993 * This function stops the OFD device and all its subsystems.
2994 * This is the end of OFD lifecycle.
2996 * \param[in] env execution environment
2997 * \param[in] m OFD device
2999 static void ofd_fini(const struct lu_env *env, struct ofd_device *m)
3001 struct obd_device *obd = ofd_obd(m);
3002 struct lu_device *d = &m->ofd_dt_dev.dd_lu_dev;
3003 struct lfsck_stop stop;
3005 stop.ls_status = LS_PAUSED;
3007 lfsck_stop(env, m->ofd_osd, &stop);
3008 ofd_stack_pre_fini(env, m, &m->ofd_dt_dev.dd_lu_dev);
3009 target_recovery_fini(obd);
3010 if (m->ofd_namespace != NULL)
3011 ldlm_namespace_free_prior(m->ofd_namespace, NULL,
3012 d->ld_obd->obd_force);
3014 obd_exports_barrier(obd);
3015 obd_zombie_barrier();
3018 tgt_fini(env, &m->ofd_lut);
3019 ofd_stop_inconsistency_verification_thread(m);
3020 lfsck_degister(env, m->ofd_osd);
3021 ofd_fs_cleanup(env, m);
3022 nm_config_file_deregister_tgt(env, obd->u.obt.obt_nodemap_config_file);
3023 obd->u.obt.obt_nodemap_config_file = NULL;
3025 if (m->ofd_namespace != NULL) {
3026 ldlm_namespace_free_post(m->ofd_namespace);
3027 d->ld_obd->obd_namespace = m->ofd_namespace = NULL;
3030 ofd_stack_fini(env, m, &m->ofd_dt_dev.dd_lu_dev);
3032 LASSERT(atomic_read(&d->ld_ref) == 0);
3033 server_put_mount(obd->obd_name, true);
3038 * Implementation of lu_device_type_operations::ldto_device_fini.
3040 * Finalize device. Dual to ofd_device_init(). It is called from
3041 * obd_precleanup() and stops the current device.
3043 * \param[in] env execution environment
3044 * \param[in] d LU device of OFD
3048 static struct lu_device *ofd_device_fini(const struct lu_env *env,
3049 struct lu_device *d)
3052 ofd_fini(env, ofd_dev(d));
3057 * Implementation of lu_device_type_operations::ldto_device_free.
3059 * Free OFD device. Dual to ofd_device_alloc().
3061 * \param[in] env execution environment
3062 * \param[in] d LU device of OFD
3066 static struct lu_device *ofd_device_free(const struct lu_env *env,
3067 struct lu_device *d)
3069 struct ofd_device *m = ofd_dev(d);
3071 dt_device_fini(&m->ofd_dt_dev);
3077 * Implementation of lu_device_type_operations::ldto_device_alloc.
3079 * This function allocates the new OFD device. It is called from
3080 * obd_setup() if OBD device had lu_device_type defined.
3082 * \param[in] env execution environment
3083 * \param[in] t lu_device_type of OFD device
3084 * \param[in] cfg configuration log
3086 * \retval pointer to the lu_device of just allocated OFD
3087 * \retval ERR_PTR of return value on error
3089 static struct lu_device *ofd_device_alloc(const struct lu_env *env,
3090 struct lu_device_type *t,
3091 struct lustre_cfg *cfg)
3093 struct ofd_device *m;
3094 struct lu_device *l;
3099 return ERR_PTR(-ENOMEM);
3101 l = &m->ofd_dt_dev.dd_lu_dev;
3102 dt_device_init(&m->ofd_dt_dev, t);
3103 rc = ofd_init0(env, m, t, cfg);
3105 ofd_device_free(env, l);
3112 /* type constructor/destructor: ofd_type_init(), ofd_type_fini() */
3113 LU_TYPE_INIT_FINI(ofd, &ofd_thread_key);
3115 static struct lu_device_type_operations ofd_device_type_ops = {
3116 .ldto_init = ofd_type_init,
3117 .ldto_fini = ofd_type_fini,
3119 .ldto_start = ofd_type_start,
3120 .ldto_stop = ofd_type_stop,
3122 .ldto_device_alloc = ofd_device_alloc,
3123 .ldto_device_free = ofd_device_free,
3124 .ldto_device_fini = ofd_device_fini
3127 static struct lu_device_type ofd_device_type = {
3128 .ldt_tags = LU_DEVICE_DT,
3129 .ldt_name = LUSTRE_OST_NAME,
3130 .ldt_ops = &ofd_device_type_ops,
3131 .ldt_ctx_tags = LCT_DT_THREAD
3135 * Initialize OFD module.
3137 * This function is called upon module loading. It registers OFD device type
3138 * and prepares all in-memory structures used by all OFD devices.
3140 * \retval 0 if successful
3141 * \retval negative value on error
3143 static int __init ofd_init(void)
3147 rc = lu_kmem_init(ofd_caches);
3150 rc = class_register_type(&ofd_obd_ops, NULL, true, NULL,
3151 LUSTRE_OST_NAME, &ofd_device_type);
3158 * This function is called upon OFD module unloading.
3159 * It frees all related structures and unregisters OFD device type.
3161 static void __exit ofd_exit(void)
3163 lu_kmem_fini(ofd_caches);
3164 class_unregister_type(LUSTRE_OST_NAME);
3167 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
3168 MODULE_DESCRIPTION("Lustre Object Filtering Device");
3169 MODULE_VERSION(LUSTRE_VERSION_STRING);
3170 MODULE_LICENSE("GPL");
3172 module_init(ofd_init);
3173 module_exit(ofd_exit);
git://git.whamcloud.com / fs / lustre-release.git / blob