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;
86 static struct lu_kmem_descr ofd_caches[] = {
88 .ckd_cache = &ofd_object_kmem,
89 .ckd_name = "ofd_obj",
90 .ckd_size = sizeof(struct ofd_object)
98 * Connect OFD to the next device in the stack.
100 * This function is used for device stack configuration and links OFD
101 * device with bottom OSD device.
103 * \param[in] env execution environment
104 * \param[in] m OFD device
105 * \param[in] next name of next device in the stack
106 * \param[out] exp export to return
108 * \retval 0 and export in \a exp if successful
109 * \retval negative value on error
111 static int ofd_connect_to_next(const struct lu_env *env, struct ofd_device *m,
112 const char *next, struct obd_export **exp)
114 struct obd_connect_data *data = NULL;
115 struct obd_device *obd;
121 GOTO(out, rc = -ENOMEM);
123 obd = class_name2obd(next);
125 CERROR("%s: can't locate next device: %s\n",
127 GOTO(out, rc = -ENOTCONN);
130 data->ocd_connect_flags = OBD_CONNECT_VERSION;
131 data->ocd_version = LUSTRE_VERSION_CODE;
133 rc = obd_connect(NULL, exp, obd, &obd->obd_uuid, data, NULL);
135 CERROR("%s: cannot connect to next dev %s: rc = %d\n",
136 ofd_name(m), next, rc);
140 m->ofd_dt_dev.dd_lu_dev.ld_site =
141 m->ofd_osd_exp->exp_obd->obd_lu_dev->ld_site;
142 LASSERT(m->ofd_dt_dev.dd_lu_dev.ld_site);
143 m->ofd_osd = lu2dt_dev(m->ofd_osd_exp->exp_obd->obd_lu_dev);
144 m->ofd_dt_dev.dd_lu_dev.ld_site->ls_top_dev = &m->ofd_dt_dev.dd_lu_dev;
153 * Initialize stack of devices.
155 * This function initializes OFD-OSD device stack to serve OST requests
157 * \param[in] env execution environment
158 * \param[in] m OFD device
159 * \param[in] cfg Lustre config for this server
161 * \retval 0 if successful
162 * \retval negative value on error
164 static int ofd_stack_init(const struct lu_env *env,
165 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;
184 if (lmd != NULL && lmd->lmd_flags & LMD_FLG_SKIP_LFSCK)
185 m->ofd_skip_lfsck = 1;
187 /* find bottom osd */
188 OBD_ALLOC(osdname, MTI_NAME_MAXLEN);
192 snprintf(osdname, MTI_NAME_MAXLEN, "%s-osd", dev);
193 rc = ofd_connect_to_next(env, m, osdname, &m->ofd_osd_exp);
194 OBD_FREE(osdname, MTI_NAME_MAXLEN);
198 d = m->ofd_osd_exp->exp_obd->obd_lu_dev;
200 m->ofd_osd = lu2dt_dev(d);
202 snprintf(info->fti_u.name, sizeof(info->fti_u.name),
203 "%s-osd", lustre_cfg_string(cfg, 0));
209 * Finalize the device stack OFD-OSD.
211 * This function cleans OFD-OSD device stack and
212 * disconnects OFD from the OSD.
214 * \param[in] env execution environment
215 * \param[in] m OFD device
216 * \param[in] top top device of stack
218 * \retval 0 if successful
219 * \retval negative value on error
221 static void ofd_stack_fini(const struct lu_env *env, struct ofd_device *m,
222 struct lu_device *top)
224 struct obd_device *obd = ofd_obd(m);
225 struct lustre_cfg_bufs bufs;
226 struct lustre_cfg *lcfg;
231 lu_site_purge(env, top->ld_site, ~0);
232 /* process cleanup, pass mdt obd name to get obd umount flags */
233 lustre_cfg_bufs_reset(&bufs, obd->obd_name);
238 lustre_cfg_bufs_set_string(&bufs, 1, flags);
239 OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
242 lustre_cfg_init(lcfg, LCFG_CLEANUP, &bufs);
245 top->ld_ops->ldo_process_config(env, top, lcfg);
246 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount, lcfg->lcfg_buflens));
248 if (m->ofd_los != NULL) {
249 local_oid_storage_fini(env, m->ofd_los);
253 lu_site_purge(env, top->ld_site, ~0);
254 if (!cfs_hash_is_empty(top->ld_site->ls_obj_hash)) {
255 LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_OTHER, NULL);
256 lu_site_print(env, top->ld_site, &msgdata, lu_cdebug_printer);
259 LASSERT(m->ofd_osd_exp);
260 obd_disconnect(m->ofd_osd_exp);
265 static void ofd_stack_pre_fini(const struct lu_env *env, struct ofd_device *m,
266 struct lu_device *top)
268 struct lustre_cfg_bufs bufs;
269 struct lustre_cfg *lcfg;
274 lustre_cfg_bufs_reset(&bufs, ofd_name(m));
275 lustre_cfg_bufs_set_string(&bufs, 1, NULL);
276 OBD_ALLOC(lcfg, lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
278 CERROR("%s: failed to trigger LCFG_PRE_CLEANUP\n", ofd_name(m));
280 lustre_cfg_init(lcfg, LCFG_PRE_CLEANUP, &bufs);
281 top->ld_ops->ldo_process_config(env, top, lcfg);
282 OBD_FREE(lcfg, lustre_cfg_len(lcfg->lcfg_bufcount,
283 lcfg->lcfg_buflens));
289 /* For interoperability, see mdt_interop_param[]. */
290 static struct cfg_interop_param ofd_interop_param[] = {
291 { "ost.quota_type", NULL },
296 * Check if parameters are symlinks to the OSD.
298 * Some parameters were moved from ofd to osd and only their
299 * symlinks were kept in ofd by LU-3106. They are:
300 * -writehthrough_cache_enable
301 * -readcache_max_filesize
305 * Since they are not included by the static lprocfs var list, a pre-check
306 * is added for them to avoid "unknown param" errors. If they are matched
307 * in this check, they will be passed to the OSD directly.
309 * \param[in] param parameters to check
311 * \retval true if param is symlink to OSD param
314 static bool match_symlink_param(char *param)
319 if (class_match_param(param, PARAM_OST, ¶m) == 0) {
320 sval = strchr(param, '=');
322 paramlen = sval - param;
323 if (strncmp(param, "writethrough_cache_enable",
325 strncmp(param, "readcache_max_filesize",
327 strncmp(param, "read_cache_enable",
329 strncmp(param, "brw_stats", paramlen) == 0)
338 * Process various configuration parameters.
340 * This function is used by MGS to process specific configurations and
341 * pass them through to the next device in server stack, i.e. the OSD.
343 * \param[in] env execution environment
344 * \param[in] d LU device of OFD
345 * \param[in] cfg parameters to process
347 * \retval 0 if successful
348 * \retval negative value on error
350 static int ofd_process_config(const struct lu_env *env, struct lu_device *d,
351 struct lustre_cfg *cfg)
353 struct ofd_device *m = ofd_dev(d);
354 struct dt_device *dt_next = m->ofd_osd;
355 struct lu_device *next = &dt_next->dd_lu_dev;
360 switch (cfg->lcfg_command) {
362 struct obd_device *obd = ofd_obd(m);
363 /* For interoperability */
364 struct cfg_interop_param *ptr = NULL;
365 struct lustre_cfg *old_cfg = NULL;
368 param = lustre_cfg_string(cfg, 1);
370 CERROR("param is empty\n");
375 ptr = class_find_old_param(param, ofd_interop_param);
377 if (ptr->new_param == NULL) {
379 CWARN("For interoperability, skip this %s."
380 " It is obsolete.\n", ptr->old_param);
384 CWARN("Found old param %s, changed it to %s.\n",
385 ptr->old_param, ptr->new_param);
388 cfg = lustre_cfg_rename(old_cfg, ptr->new_param);
395 if (match_symlink_param(param)) {
396 rc = next->ld_ops->ldo_process_config(env, next, cfg);
400 rc = class_process_proc_param(PARAM_OST, obd->obd_vars, cfg,
402 if (rc > 0 || rc == -ENOSYS) {
403 CDEBUG(D_CONFIG, "pass param %s down the stack.\n",
405 /* we don't understand; pass it on */
406 rc = next->ld_ops->ldo_process_config(env, next, cfg);
410 case LCFG_SPTLRPC_CONF: {
415 /* others are passed further */
416 rc = next->ld_ops->ldo_process_config(env, next, cfg);
423 * Implementation of lu_object_operations::loo_object_init for OFD
425 * Allocate just the next object (OSD) in stack.
427 * \param[in] env execution environment
428 * \param[in] o lu_object of OFD object
429 * \param[in] conf additional configuration parameters, not used here
431 * \retval 0 if successful
432 * \retval negative value on error
434 static int ofd_object_init(const struct lu_env *env, struct lu_object *o,
435 const struct lu_object_conf *conf)
437 struct ofd_device *d = ofd_dev(o->lo_dev);
438 struct lu_device *under;
439 struct lu_object *below;
444 CDEBUG(D_INFO, "object init, fid = "DFID"\n",
445 PFID(lu_object_fid(o)));
447 under = &d->ofd_osd->dd_lu_dev;
448 below = under->ld_ops->ldo_object_alloc(env, o->lo_header, under);
450 lu_object_add(o, below);
458 * Implementation of lu_object_operations::loo_object_free.
460 * Finish OFD object lifecycle and free its memory.
462 * \param[in] env execution environment
463 * \param[in] o LU object of OFD object
465 static void ofd_object_free(const struct lu_env *env, struct lu_object *o)
467 struct ofd_object *of = ofd_obj(o);
468 struct lu_object_header *h;
473 CDEBUG(D_INFO, "object free, fid = "DFID"\n",
474 PFID(lu_object_fid(o)));
477 lu_object_header_fini(h);
478 OBD_SLAB_FREE_PTR(of, ofd_object_kmem);
483 * Implementation of lu_object_operations::loo_object_print.
485 * Print OFD part of compound OFD-OSD object. See lu_object_print() and
486 * LU_OBJECT_DEBUG() for more details about the compound object printing.
488 * \param[in] env execution environment
489 * \param[in] cookie opaque data passed to the printer function
490 * \param[in] p printer function to use
491 * \param[in] o LU object of OFD object
493 * \retval 0 if successful
494 * \retval negative value on error
496 static int ofd_object_print(const struct lu_env *env, void *cookie,
497 lu_printer_t p, const struct lu_object *o)
499 return (*p)(env, cookie, LUSTRE_OST_NAME"-object@%p", o);
502 static struct lu_object_operations ofd_obj_ops = {
503 .loo_object_init = ofd_object_init,
504 .loo_object_free = ofd_object_free,
505 .loo_object_print = ofd_object_print
509 * Implementation of lu_device_operations::lod_object_alloc.
511 * This function allocates OFD part of compound OFD-OSD object and
512 * initializes its header, because OFD is the top device in stack
514 * \param[in] env execution environment
515 * \param[in] hdr object header, NULL for OFD
516 * \param[in] d lu_device
518 * \retval allocated object if successful
519 * \retval NULL value on failed allocation
521 static struct lu_object *ofd_object_alloc(const struct lu_env *env,
522 const struct lu_object_header *hdr,
525 struct ofd_object *of;
529 OBD_SLAB_ALLOC_PTR_GFP(of, ofd_object_kmem, GFP_NOFS);
532 struct lu_object_header *h;
534 o = &of->ofo_obj.do_lu;
536 lu_object_header_init(h);
537 lu_object_init(o, h, d);
538 lu_object_add_top(h, o);
539 o->lo_ops = &ofd_obj_ops;
547 * Return the result of LFSCK run to the OFD.
549 * Notify OFD about result of LFSCK run. That may block the new object
550 * creation until problem is fixed by LFSCK.
552 * \param[in] env execution environment
553 * \param[in] data pointer to the OFD device
554 * \param[in] event LFSCK event type
556 * \retval 0 if successful
557 * \retval negative value on unknown event
559 static int ofd_lfsck_out_notify(const struct lu_env *env, void *data,
560 enum lfsck_events event)
562 struct ofd_device *ofd = data;
563 struct obd_device *obd = ofd_obd(ofd);
566 case LE_LASTID_REBUILDING:
567 CWARN("%s: Found crashed LAST_ID, deny creating new OST-object "
568 "on the device until the LAST_ID rebuilt successfully.\n",
570 down_write(&ofd->ofd_lastid_rwsem);
571 ofd->ofd_lastid_rebuilding = 1;
572 up_write(&ofd->ofd_lastid_rwsem);
574 case LE_LASTID_REBUILT: {
575 down_write(&ofd->ofd_lastid_rwsem);
576 ofd_seqs_free(env, ofd);
577 ofd->ofd_lastid_rebuilding = 0;
578 ofd->ofd_lastid_gen++;
579 up_write(&ofd->ofd_lastid_rwsem);
580 CWARN("%s: Rebuilt crashed LAST_ID files successfully.\n",
585 CERROR("%s: unknown lfsck event: rc = %d\n",
586 ofd_name(ofd), event);
594 * Implementation of lu_device_operations::ldo_prepare.
596 * This method is called after layer has been initialized and before it starts
597 * serving user requests. In OFD it starts lfsk check routines and initializes
600 * \param[in] env execution environment
601 * \param[in] pdev higher device in stack, NULL for OFD
602 * \param[in] dev lu_device of OFD device
604 * \retval 0 if successful
605 * \retval negative value on error
607 static int ofd_prepare(const struct lu_env *env, struct lu_device *pdev,
608 struct lu_device *dev)
610 struct ofd_thread_info *info;
611 struct ofd_device *ofd = ofd_dev(dev);
612 struct obd_device *obd = ofd_obd(ofd);
613 struct lu_device *next = &ofd->ofd_osd->dd_lu_dev;
618 info = ofd_info_init(env, NULL);
622 /* initialize lower device */
623 rc = next->ld_ops->ldo_prepare(env, dev, next);
627 rc = lfsck_register(env, ofd->ofd_osd, ofd->ofd_osd, obd,
628 ofd_lfsck_out_notify, ofd, false);
630 CERROR("%s: failed to initialize lfsck: rc = %d\n",
635 rc = lfsck_register_namespace(env, ofd->ofd_osd, ofd->ofd_namespace);
636 /* The LFSCK instance is registered just now, so it must be there when
637 * register the namespace to such instance. */
638 LASSERTF(rc == 0, "register namespace failed: rc = %d\n", rc);
640 target_recovery_init(&ofd->ofd_lut, tgt_request_handle);
641 LASSERT(obd->obd_no_conn);
642 spin_lock(&obd->obd_dev_lock);
643 obd->obd_no_conn = 0;
644 spin_unlock(&obd->obd_dev_lock);
646 if (obd->obd_recovering == 0)
647 ofd_postrecov(env, ofd);
653 * Implementation of lu_device_operations::ldo_recovery_complete.
655 * This method notifies all layers about 'recovery complete' event. That means
656 * device is in full state and consistent. An OFD calculates available grant
657 * space upon this event.
659 * \param[in] env execution environment
660 * \param[in] dev lu_device of OFD device
662 * \retval 0 if successful
663 * \retval negative value on error
665 static int ofd_recovery_complete(const struct lu_env *env,
666 struct lu_device *dev)
668 struct ofd_thread_info *oti = ofd_info(env);
669 struct ofd_device *ofd = ofd_dev(dev);
670 struct lu_device *next = &ofd->ofd_osd->dd_lu_dev;
676 * Grant space for object precreation on the self export.
677 * The initial reserved space (i.e. 10MB for zfs and 280KB for ldiskfs)
678 * is enough to create 10k objects. More space is then acquired for
679 * precreation in tgt_grant_create().
681 memset(&oti->fti_ocd, 0, sizeof(oti->fti_ocd));
682 oti->fti_ocd.ocd_grant = OST_MAX_PRECREATE / 2;
683 oti->fti_ocd.ocd_grant *= ofd->ofd_lut.lut_dt_conf.ddp_inodespace;
684 oti->fti_ocd.ocd_connect_flags = OBD_CONNECT_GRANT |
685 OBD_CONNECT_GRANT_PARAM;
686 tgt_grant_connect(env, dev->ld_obd->obd_self_export, &oti->fti_ocd,
688 rc = next->ld_ops->ldo_recovery_complete(env, next);
693 * lu_device_operations matrix for OFD device.
695 static struct lu_device_operations ofd_lu_ops = {
696 .ldo_object_alloc = ofd_object_alloc,
697 .ldo_process_config = ofd_process_config,
698 .ldo_recovery_complete = ofd_recovery_complete,
699 .ldo_prepare = ofd_prepare,
702 LPROC_SEQ_FOPS(lprocfs_nid_stats_clear);
705 * Initialize all needed procfs entries for OFD device.
707 * \param[in] ofd OFD device
709 * \retval 0 if successful
710 * \retval negative value on error
712 static int ofd_procfs_init(struct ofd_device *ofd)
714 struct obd_device *obd = ofd_obd(ofd);
715 struct proc_dir_entry *entry;
720 /* lprocfs must be setup before the ofd so state can be safely added
721 * to /proc incrementally as the ofd is setup */
722 obd->obd_vars = lprocfs_ofd_obd_vars;
723 rc = lprocfs_obd_setup(obd, false);
725 CERROR("%s: lprocfs_obd_setup failed: %d.\n",
730 rc = lprocfs_alloc_obd_stats(obd, LPROC_OFD_STATS_LAST);
732 CERROR("%s: lprocfs_alloc_obd_stats failed: %d.\n",
734 GOTO(obd_cleanup, rc);
737 obd->obd_uses_nid_stats = 1;
739 entry = lprocfs_register("exports", obd->obd_proc_entry, NULL, NULL);
742 CERROR("%s: error %d setting up lprocfs for %s\n",
743 obd->obd_name, rc, "exports");
744 GOTO(obd_cleanup, rc);
746 obd->obd_proc_exports_entry = entry;
748 entry = lprocfs_add_simple(obd->obd_proc_exports_entry, "clear",
749 obd, &lprocfs_nid_stats_clear_fops);
752 CERROR("%s: add proc entry 'clear' failed: %d.\n",
754 GOTO(obd_cleanup, rc);
757 ofd_stats_counter_init(obd->obd_stats);
759 rc = lprocfs_job_stats_init(obd, LPROC_OFD_STATS_LAST,
760 ofd_stats_counter_init);
762 GOTO(obd_cleanup, rc);
765 lprocfs_obd_cleanup(obd);
766 lprocfs_free_obd_stats(obd);
772 * Expose OSD statistics to OFD layer.
774 * The osd interfaces to the backend file system exposes useful data
775 * such as brw_stats and read or write cache states. This same data
776 * needs to be exposed into the obdfilter (ofd) layer to maintain
777 * backwards compatibility. This function creates the symlinks in the
778 * proc layer to enable this.
780 * \param[in] ofd OFD device
782 static void ofd_procfs_add_brw_stats_symlink(struct ofd_device *ofd)
784 struct obd_device *obd = ofd_obd(ofd);
785 struct obd_device *osd_obd = ofd->ofd_osd_exp->exp_obd;
787 if (obd->obd_proc_entry == NULL)
790 lprocfs_add_symlink("brw_stats", obd->obd_proc_entry,
791 "../../%s/%s/brw_stats",
792 osd_obd->obd_type->typ_name, obd->obd_name);
794 lprocfs_add_symlink("read_cache_enable", obd->obd_proc_entry,
795 "../../%s/%s/read_cache_enable",
796 osd_obd->obd_type->typ_name, obd->obd_name);
798 lprocfs_add_symlink("readcache_max_filesize",
800 "../../%s/%s/readcache_max_filesize",
801 osd_obd->obd_type->typ_name, obd->obd_name);
803 lprocfs_add_symlink("writethrough_cache_enable",
805 "../../%s/%s/writethrough_cache_enable",
806 osd_obd->obd_type->typ_name, obd->obd_name);
810 * Cleanup all procfs entries in OFD.
812 * \param[in] ofd OFD device
814 static void ofd_procfs_fini(struct ofd_device *ofd)
816 struct obd_device *obd = ofd_obd(ofd);
818 lprocfs_free_per_client_stats(obd);
819 lprocfs_obd_cleanup(obd);
820 lprocfs_free_obd_stats(obd);
821 lprocfs_job_stats_fini(obd);
825 * Stop SEQ/FID server on OFD.
827 * \param[in] env execution environment
828 * \param[in] ofd OFD device
830 * \retval 0 if successful
831 * \retval negative value on error
833 int ofd_fid_fini(const struct lu_env *env, struct ofd_device *ofd)
835 return seq_site_fini(env, &ofd->ofd_seq_site);
839 * Start SEQ/FID server on OFD.
841 * The SEQ/FID server on OFD is needed to allocate FIDs for new objects.
842 * It also connects to the master server to get own FID sequence (SEQ) range
843 * to this particular OFD. Typically that happens when the OST is first
844 * formatted or in the rare case that it exhausts the local sequence range.
846 * The sequence range is allocated out to the MDTs for OST object allocations,
847 * and not directly to the clients.
849 * \param[in] env execution environment
850 * \param[in] ofd OFD device
852 * \retval 0 if successful
853 * \retval negative value on error
855 int ofd_fid_init(const struct lu_env *env, struct ofd_device *ofd)
857 struct seq_server_site *ss = &ofd->ofd_seq_site;
858 struct lu_device *lu = &ofd->ofd_dt_dev.dd_lu_dev;
859 char *obd_name = ofd_name(ofd);
863 ss = &ofd->ofd_seq_site;
864 lu->ld_site->ld_seq_site = ss;
865 ss->ss_lu = lu->ld_site;
866 ss->ss_node_id = ofd->ofd_lut.lut_lsd.lsd_osd_index;
868 OBD_ALLOC(name, sizeof(obd_name) * 2 + 10);
872 OBD_ALLOC_PTR(ss->ss_server_seq);
873 if (ss->ss_server_seq == NULL)
874 GOTO(out_name, rc = -ENOMEM);
876 rc = seq_server_init(env, ss->ss_server_seq, ofd->ofd_osd, obd_name,
877 LUSTRE_SEQ_SERVER, ss);
879 CERROR("%s : seq server init error %d\n", obd_name, rc);
880 GOTO(out_server, rc);
882 ss->ss_server_seq->lss_space.lsr_index = ss->ss_node_id;
884 OBD_ALLOC_PTR(ss->ss_client_seq);
885 if (ss->ss_client_seq == NULL)
886 GOTO(out_server, rc = -ENOMEM);
889 * It always printed as "%p", so that the name is unique in the kernel,
890 * even if the filesystem is mounted twice. So sizeof(.) * 2 is enough.
892 snprintf(name, sizeof(obd_name) * 2 + 7, "%p-super", obd_name);
893 rc = seq_client_init(ss->ss_client_seq, NULL, LUSTRE_SEQ_DATA,
896 CERROR("%s : seq client init error %d\n", obd_name, rc);
897 GOTO(out_client, rc);
900 rc = seq_server_set_cli(env, ss->ss_server_seq, ss->ss_client_seq);
904 seq_client_fini(ss->ss_client_seq);
905 OBD_FREE_PTR(ss->ss_client_seq);
906 ss->ss_client_seq = NULL;
908 seq_server_fini(ss->ss_server_seq, env);
909 OBD_FREE_PTR(ss->ss_server_seq);
910 ss->ss_server_seq = NULL;
913 OBD_FREE(name, sizeof(obd_name) * 2 + 10);
919 * OFD request handler for OST_SET_INFO RPC.
921 * This is OFD-specific part of request handling
923 * \param[in] tsi target session environment for this request
925 * \retval 0 if successful
926 * \retval negative value on error
928 static int ofd_set_info_hdl(struct tgt_session_info *tsi)
930 struct ptlrpc_request *req = tgt_ses_req(tsi);
931 struct ost_body *body = NULL, *repbody;
932 void *key, *val = NULL;
933 int keylen, vallen, rc = 0;
934 bool is_grant_shrink;
938 key = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_KEY);
940 DEBUG_REQ(D_HA, req, "no set_info key");
941 RETURN(err_serious(-EFAULT));
943 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_KEY,
946 val = req_capsule_client_get(tsi->tsi_pill, &RMF_SETINFO_VAL);
948 DEBUG_REQ(D_HA, req, "no set_info val");
949 RETURN(err_serious(-EFAULT));
951 vallen = req_capsule_get_size(tsi->tsi_pill, &RMF_SETINFO_VAL,
954 is_grant_shrink = KEY_IS(KEY_GRANT_SHRINK);
956 /* In this case the value is actually an RMF_OST_BODY, so we
957 * transmutate the type of this PTLRPC */
958 req_capsule_extend(tsi->tsi_pill, &RQF_OST_SET_GRANT_INFO);
960 rc = req_capsule_server_pack(tsi->tsi_pill);
964 if (is_grant_shrink) {
965 body = req_capsule_client_get(tsi->tsi_pill, &RMF_OST_BODY);
967 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
970 /** handle grant shrink, similar to a read request */
971 tgt_grant_prepare_read(tsi->tsi_env, tsi->tsi_exp,
973 } else if (KEY_IS(KEY_EVICT_BY_NID)) {
975 obd_export_evict_by_nid(tsi->tsi_exp->exp_obd, val);
978 CERROR("%s: Unsupported key %s\n",
979 tgt_name(tsi->tsi_tgt), (char *)key);
982 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SET_INFO,
989 * Get FIEMAP (FIle Extent MAPping) for object with the given FID.
991 * This function returns a list of extents which describes how a file's
992 * blocks are laid out on the disk.
994 * \param[in] env execution environment
995 * \param[in] ofd OFD device
996 * \param[in] fid FID of object
997 * \param[in] fiemap fiemap structure to fill with data
999 * \retval 0 if \a fiemap is filled with data successfully
1000 * \retval negative value on error
1002 int ofd_fiemap_get(const struct lu_env *env, struct ofd_device *ofd,
1003 struct lu_fid *fid, struct fiemap *fiemap)
1005 struct ofd_object *fo;
1008 fo = ofd_object_find(env, ofd, fid);
1010 CERROR("%s: error finding object "DFID"\n",
1011 ofd_name(ofd), PFID(fid));
1015 ofd_read_lock(env, fo);
1016 if (ofd_object_exists(fo))
1017 rc = dt_fiemap_get(env, ofd_object_child(fo), fiemap);
1020 ofd_read_unlock(env, fo);
1021 ofd_object_put(env, fo);
1026 static int ofd_lock_unlock_region(struct ldlm_namespace *ns,
1027 struct ldlm_res_id *res_id,
1028 unsigned long long begin,
1029 unsigned long long end)
1033 struct lustre_handle lh = { 0 };
1035 LASSERT(begin <= end);
1037 rc = tgt_extent_lock(ns, res_id, begin, end, &lh, LCK_PR, &flags);
1041 CDEBUG(D_OTHER, "ost lock [%llu,%llu], lh=%p\n", begin, end, &lh);
1042 tgt_extent_unlock(&lh, LCK_PR);
1048 * Lock the sparse areas of given resource.
1050 * The locking of sparse areas will cause dirty data to be flushed back from
1051 * clients. This is used when getting the FIEMAP of an object to make sure
1052 * there is no unaccounted cached data on clients.
1054 * This function goes through \a fiemap list of extents and locks only sparse
1055 * areas between extents.
1057 * \param[in] ns LDLM namespace
1058 * \param[in] res_id resource ID
1059 * \param[in] fiemap file extents mapping on disk
1060 * \param[in] locked list head of regions list
1062 * \retval 0 if successful
1063 * \retval negative value on error
1065 static int lock_zero_regions(struct ldlm_namespace *ns,
1066 struct ldlm_res_id *res_id,
1067 struct fiemap *fiemap)
1069 __u64 begin = fiemap->fm_start;
1072 struct fiemap_extent *fiemap_start = fiemap->fm_extents;
1076 CDEBUG(D_OTHER, "extents count %u\n", fiemap->fm_mapped_extents);
1077 for (i = 0; i < fiemap->fm_mapped_extents; i++) {
1078 if (fiemap_start[i].fe_logical > begin) {
1079 CDEBUG(D_OTHER, "ost lock [%llu,%llu]\n",
1080 begin, fiemap_start[i].fe_logical);
1081 rc = ofd_lock_unlock_region(ns, res_id, begin,
1082 fiemap_start[i].fe_logical);
1087 begin = fiemap_start[i].fe_logical + fiemap_start[i].fe_length;
1090 if (begin < (fiemap->fm_start + fiemap->fm_length)) {
1091 CDEBUG(D_OTHER, "ost lock [%llu,%llu]\n",
1092 begin, fiemap->fm_start + fiemap->fm_length);
1093 rc = ofd_lock_unlock_region(ns, res_id, begin,
1094 fiemap->fm_start + fiemap->fm_length);
1102 * OFD request handler for OST_GET_INFO RPC.
1104 * This is OFD-specific part of request handling. The OFD-specific keys are:
1105 * - KEY_LAST_ID (obsolete)
1109 * This function reads needed data from storage and fills reply with it.
1111 * Note: the KEY_LAST_ID is obsolete, replaced by KEY_LAST_FID on newer MDTs,
1112 * and is kept for compatibility.
1114 * \param[in] tsi target session environment for this request
1116 * \retval 0 if successful
1117 * \retval negative value on error
1119 static int ofd_get_info_hdl(struct tgt_session_info *tsi)
1121 struct obd_export *exp = tsi->tsi_exp;
1122 struct ofd_device *ofd = ofd_exp(exp);
1123 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1126 int replylen, rc = 0;
1130 /* this common part for get_info rpc */
1131 key = req_capsule_client_get(tsi->tsi_pill, &RMF_GETINFO_KEY);
1133 DEBUG_REQ(D_HA, tgt_ses_req(tsi), "no get_info key");
1134 RETURN(err_serious(-EPROTO));
1136 keylen = req_capsule_get_size(tsi->tsi_pill, &RMF_GETINFO_KEY,
1139 if (KEY_IS(KEY_LAST_ID)) {
1141 struct ofd_seq *oseq;
1143 req_capsule_extend(tsi->tsi_pill, &RQF_OST_GET_INFO_LAST_ID);
1144 rc = req_capsule_server_pack(tsi->tsi_pill);
1146 RETURN(err_serious(rc));
1148 last_id = req_capsule_server_get(tsi->tsi_pill, &RMF_OBD_ID);
1150 oseq = ofd_seq_load(tsi->tsi_env, ofd,
1151 (u64)exp->exp_filter_data.fed_group);
1155 *last_id = ofd_seq_last_oid(oseq);
1156 ofd_seq_put(tsi->tsi_env, oseq);
1157 } else if (KEY_IS(KEY_FIEMAP)) {
1158 struct ll_fiemap_info_key *fm_key;
1159 struct fiemap *fiemap;
1162 req_capsule_extend(tsi->tsi_pill, &RQF_OST_GET_INFO_FIEMAP);
1164 fm_key = req_capsule_client_get(tsi->tsi_pill, &RMF_FIEMAP_KEY);
1165 rc = tgt_validate_obdo(tsi, &fm_key->lfik_oa);
1167 RETURN(err_serious(rc));
1169 fid = &fm_key->lfik_oa.o_oi.oi_fid;
1171 CDEBUG(D_INODE, "get FIEMAP of object "DFID"\n", PFID(fid));
1173 replylen = fiemap_count_to_size(
1174 fm_key->lfik_fiemap.fm_extent_count);
1175 req_capsule_set_size(tsi->tsi_pill, &RMF_FIEMAP_VAL,
1176 RCL_SERVER, replylen);
1178 rc = req_capsule_server_pack(tsi->tsi_pill);
1180 RETURN(err_serious(rc));
1182 fiemap = req_capsule_server_get(tsi->tsi_pill, &RMF_FIEMAP_VAL);
1186 *fiemap = fm_key->lfik_fiemap;
1187 rc = ofd_fiemap_get(tsi->tsi_env, ofd, fid, fiemap);
1189 /* LU-3219: Lock the sparse areas to make sure dirty
1190 * flushed back from client, then call fiemap again. */
1191 if (fm_key->lfik_oa.o_valid & OBD_MD_FLFLAGS &&
1192 fm_key->lfik_oa.o_flags & OBD_FL_SRVLOCK) {
1193 ost_fid_build_resid(fid, &fti->fti_resid);
1194 rc = lock_zero_regions(ofd->ofd_namespace,
1195 &fti->fti_resid, fiemap);
1197 rc = ofd_fiemap_get(tsi->tsi_env, ofd, fid,
1200 } else if (KEY_IS(KEY_LAST_FID)) {
1201 struct ofd_device *ofd = ofd_exp(exp);
1202 struct ofd_seq *oseq;
1206 req_capsule_extend(tsi->tsi_pill, &RQF_OST_GET_INFO_LAST_FID);
1207 rc = req_capsule_server_pack(tsi->tsi_pill);
1209 RETURN(err_serious(rc));
1211 fid = req_capsule_client_get(tsi->tsi_pill, &RMF_FID);
1213 RETURN(err_serious(-EPROTO));
1215 fid_le_to_cpu(&fti->fti_ostid.oi_fid, fid);
1217 fid = req_capsule_server_get(tsi->tsi_pill, &RMF_FID);
1221 oseq = ofd_seq_load(tsi->tsi_env, ofd,
1222 ostid_seq(&fti->fti_ostid));
1224 RETURN(PTR_ERR(oseq));
1226 rc = ostid_to_fid(fid, &oseq->os_oi,
1227 ofd->ofd_lut.lut_lsd.lsd_osd_index);
1231 CDEBUG(D_HA, "%s: LAST FID is "DFID"\n", ofd_name(ofd),
1234 ofd_seq_put(tsi->tsi_env, oseq);
1236 CERROR("%s: not supported key %s\n", tgt_name(tsi->tsi_tgt),
1240 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_GET_INFO,
1247 * OFD request handler for OST_GETATTR RPC.
1249 * This is OFD-specific part of request handling. It finds the OFD object
1250 * by its FID, gets attributes from storage and packs result to the reply.
1252 * \param[in] tsi target session environment for this request
1254 * \retval 0 if successful
1255 * \retval negative value on error
1257 static int ofd_getattr_hdl(struct tgt_session_info *tsi)
1259 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1260 struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
1261 struct ost_body *repbody;
1262 struct lustre_handle lh = { 0 };
1263 struct ofd_object *fo;
1265 enum ldlm_mode lock_mode = LCK_PR;
1270 LASSERT(tsi->tsi_ost_body != NULL);
1272 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1273 if (repbody == NULL)
1276 repbody->oa.o_oi = tsi->tsi_ost_body->oa.o_oi;
1277 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1279 srvlock = tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLFLAGS &&
1280 tsi->tsi_ost_body->oa.o_flags & OBD_FL_SRVLOCK;
1283 if (unlikely(tsi->tsi_ost_body->oa.o_flags & OBD_FL_FLUSH))
1286 rc = tgt_extent_lock(tsi->tsi_tgt->lut_obd->obd_namespace,
1287 &tsi->tsi_resid, 0, OBD_OBJECT_EOF, &lh,
1293 fo = ofd_object_find_exists(tsi->tsi_env, ofd, &tsi->tsi_fid);
1295 GOTO(out, rc = PTR_ERR(fo));
1297 rc = ofd_attr_get(tsi->tsi_env, fo, &fti->fti_attr);
1301 obdo_from_la(&repbody->oa, &fti->fti_attr,
1302 OFD_VALID_FLAGS | LA_UID | LA_GID | LA_PROJID);
1304 /* Store object version in reply */
1305 curr_version = dt_version_get(tsi->tsi_env,
1306 ofd_object_child(fo));
1307 if ((__s64)curr_version != -EOPNOTSUPP) {
1308 repbody->oa.o_valid |= OBD_MD_FLDATAVERSION;
1309 repbody->oa.o_data_version = curr_version;
1312 if (fo->ofo_ff.ff_layout_version > 0) {
1313 repbody->oa.o_valid |= OBD_MD_LAYOUT_VERSION;
1314 repbody->oa.o_layout_version =
1315 fo->ofo_ff.ff_layout_version + fo->ofo_ff.ff_range;
1317 CDEBUG(D_INODE, DFID": get layout version: %u\n",
1318 PFID(&tsi->tsi_fid),
1319 repbody->oa.o_layout_version);
1323 ofd_object_put(tsi->tsi_env, fo);
1326 tgt_extent_unlock(&lh, lock_mode);
1328 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_GETATTR,
1331 repbody->oa.o_valid |= OBD_MD_FLFLAGS;
1332 repbody->oa.o_flags = OBD_FL_FLUSH;
1338 * OFD request handler for OST_SETATTR RPC.
1340 * This is OFD-specific part of request handling. It finds the OFD object
1341 * by its FID, sets attributes from request and packs result to the reply.
1343 * \param[in] tsi target session environment for this request
1345 * \retval 0 if successful
1346 * \retval negative value on error
1348 static int ofd_setattr_hdl(struct tgt_session_info *tsi)
1350 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1351 struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
1352 struct ost_body *body = tsi->tsi_ost_body;
1353 struct ost_body *repbody;
1354 struct ldlm_resource *res;
1355 struct ofd_object *fo;
1360 LASSERT(body != NULL);
1362 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1363 if (repbody == NULL)
1366 repbody->oa.o_oi = body->oa.o_oi;
1367 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1369 /* This would be very bad - accidentally truncating a file when
1370 * changing the time or similar - bug 12203. */
1371 if (body->oa.o_valid & OBD_MD_FLSIZE &&
1372 body->oa.o_size != OBD_OBJECT_EOF) {
1373 static char mdsinum[48];
1375 if (body->oa.o_valid & OBD_MD_FLFID)
1376 snprintf(mdsinum, sizeof(mdsinum) - 1,
1377 "of parent "DFID, body->oa.o_parent_seq,
1378 body->oa.o_parent_oid, 0);
1382 CERROR("%s: setattr from %s is trying to truncate object "DFID
1383 " %s\n", ofd_name(ofd), obd_export_nid2str(tsi->tsi_exp),
1384 PFID(&tsi->tsi_fid), mdsinum);
1388 fo = ofd_object_find_exists(tsi->tsi_env, ofd, &tsi->tsi_fid);
1390 GOTO(out, rc = PTR_ERR(fo));
1392 la_from_obdo(&fti->fti_attr, &body->oa, body->oa.o_valid);
1393 fti->fti_attr.la_valid &= ~LA_TYPE;
1395 /* setting objects attributes (including owner/group) */
1396 rc = ofd_attr_set(tsi->tsi_env, fo, &fti->fti_attr, &body->oa);
1400 obdo_from_la(&repbody->oa, &fti->fti_attr,
1401 OFD_VALID_FLAGS | LA_UID | LA_GID | LA_PROJID);
1403 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SETATTR,
1407 ofd_object_put(tsi->tsi_env, fo);
1410 /* we do not call this before to avoid lu_object_find() in
1411 * ->lvbo_update() holding another reference on the object.
1412 * otherwise concurrent destroy can make the object unavailable
1413 * for 2nd lu_object_find() waiting for the first reference
1414 * to go... deadlock! */
1415 res = ldlm_resource_get(ofd->ofd_namespace, NULL,
1416 &tsi->tsi_resid, LDLM_EXTENT, 0);
1418 ldlm_res_lvbo_update(res, NULL, 0);
1419 ldlm_resource_putref(res);
1426 * Destroy OST orphans.
1428 * This is part of OST_CREATE RPC handling. If there is flag OBD_FL_DELORPHAN
1429 * set then we must destroy possible orphaned objects.
1431 * \param[in] env execution environment
1432 * \param[in] exp OBD export
1433 * \param[in] ofd OFD device
1434 * \param[in] oa obdo structure for reply
1436 * \retval 0 if successful
1437 * \retval negative value on error
1439 static int ofd_orphans_destroy(const struct lu_env *env,
1440 struct obd_export *exp,
1441 struct ofd_device *ofd, struct obdo *oa)
1443 struct ofd_thread_info *info = ofd_info(env);
1444 struct lu_fid *fid = &info->fti_fid;
1445 struct ost_id *oi = &oa->o_oi;
1446 struct ofd_seq *oseq;
1447 u64 seq = ostid_seq(oi);
1448 u64 end_id = ostid_id(oi);
1456 oseq = ofd_seq_get(ofd, seq);
1458 CERROR("%s: Can not find seq for "DOSTID"\n",
1459 ofd_name(ofd), POSTID(oi));
1464 last = ofd_seq_last_oid(oseq);
1467 LASSERT(exp != NULL);
1468 skip_orphan = !!(exp_connect_flags(exp) & OBD_CONNECT_SKIP_ORPHAN);
1470 if (OBD_FAIL_CHECK(OBD_FAIL_OST_NODESTROY))
1473 LCONSOLE(D_INFO, "%s: deleting orphan objects from "DOSTID
1474 " to "DOSTID"\n", ofd_name(ofd), seq, end_id + 1, seq, last);
1476 while (oid > end_id) {
1477 rc = fid_set_id(fid, oid);
1478 if (unlikely(rc != 0))
1481 rc = ofd_destroy_by_fid(env, ofd, fid, 1);
1482 if (rc != 0 && rc != -ENOENT && rc != -ESTALE &&
1483 likely(rc != -EREMCHG && rc != -EINPROGRESS))
1484 /* this is pretty fatal... */
1485 CEMERG("%s: error destroying precreated id "
1487 ofd_name(ofd), PFID(fid), rc);
1491 ofd_seq_last_oid_set(oseq, oid);
1492 /* update last_id on disk periodically so that if we
1493 * restart * we don't need to re-scan all of the just
1494 * deleted objects. */
1495 if ((oid & 511) == 0)
1496 ofd_seq_last_oid_write(env, ofd, oseq);
1500 CDEBUG(D_HA, "%s: after destroy: set last_id to "DOSTID"\n",
1501 ofd_name(ofd), seq, oid);
1505 ofd_seq_last_oid_set(oseq, oid);
1506 rc = ofd_seq_last_oid_write(env, ofd, oseq);
1508 /* don't reuse orphan object, return last used objid */
1509 rc = ostid_set_id(oi, last);
1515 ofd_seq_put(env, oseq);
1520 * OFD request handler for OST_CREATE RPC.
1522 * This is OFD-specific part of request handling. Its main purpose is to
1523 * create new data objects on OST, but it also used to destroy orphans.
1525 * \param[in] tsi target session environment for this request
1527 * \retval 0 if successful
1528 * \retval negative value on error
1530 static int ofd_create_hdl(struct tgt_session_info *tsi)
1532 struct ptlrpc_request *req = tgt_ses_req(tsi);
1533 struct ost_body *repbody;
1534 const struct obdo *oa = &tsi->tsi_ost_body->oa;
1535 struct obdo *rep_oa;
1536 struct obd_export *exp = tsi->tsi_exp;
1537 struct ofd_device *ofd = ofd_exp(exp);
1538 u64 seq = ostid_seq(&oa->o_oi);
1539 u64 oid = ostid_id(&oa->o_oi);
1540 struct ofd_seq *oseq;
1548 if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS))
1551 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1552 if (repbody == NULL)
1555 down_read(&ofd->ofd_lastid_rwsem);
1556 /* Currently, for safe, we do not distinguish which LAST_ID is broken,
1557 * we may do that in the future.
1558 * Return -ENOSPC until the LAST_ID rebuilt. */
1559 if (unlikely(ofd->ofd_lastid_rebuilding))
1560 GOTO(out_sem, rc = -ENOSPC);
1562 rep_oa = &repbody->oa;
1563 rep_oa->o_oi = oa->o_oi;
1565 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
1567 CDEBUG(D_INFO, "ofd_create("DOSTID")\n", POSTID(&oa->o_oi));
1569 oseq = ofd_seq_load(tsi->tsi_env, ofd, seq);
1571 CERROR("%s: Can't find FID Sequence %#llx: rc = %ld\n",
1572 ofd_name(ofd), seq, PTR_ERR(oseq));
1573 GOTO(out_sem, rc = -EINVAL);
1576 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
1577 (oa->o_flags & OBD_FL_RECREATE_OBJS)) {
1578 if (!ofd_obd(ofd)->obd_recovering ||
1579 oid > ofd_seq_last_oid(oseq)) {
1580 CERROR("%s: recreate objid "DOSTID" > last id %llu"
1581 "\n", ofd_name(ofd), POSTID(&oa->o_oi),
1582 ofd_seq_last_oid(oseq));
1583 GOTO(out_nolock, rc = -EINVAL);
1585 /* Do nothing here, we re-create objects during recovery
1586 * upon write replay, see ofd_preprw_write() */
1587 GOTO(out_nolock, rc = 0);
1589 /* former ofd_handle_precreate */
1590 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
1591 (oa->o_flags & OBD_FL_DELORPHAN)) {
1592 exp->exp_filter_data.fed_lastid_gen = ofd->ofd_lastid_gen;
1594 /* destroy orphans */
1595 if (lustre_msg_get_conn_cnt(tgt_ses_req(tsi)->rq_reqmsg) <
1596 exp->exp_conn_cnt) {
1597 CERROR("%s: dropping old orphan cleanup request\n",
1599 GOTO(out_nolock, rc = 0);
1601 /* This causes inflight precreates to abort and drop lock */
1602 oseq->os_destroys_in_progress = 1;
1603 mutex_lock(&oseq->os_create_lock);
1604 if (!oseq->os_destroys_in_progress) {
1605 CERROR("%s:[%llu] destroys_in_progress already"
1606 " cleared\n", ofd_name(ofd), seq);
1607 rc = ostid_set_id(&rep_oa->o_oi,
1608 ofd_seq_last_oid(oseq));
1611 diff = oid - ofd_seq_last_oid(oseq);
1612 CDEBUG(D_HA, "ofd_last_id() = %llu -> diff = %lld\n",
1613 ofd_seq_last_oid(oseq), diff);
1614 if (-diff > OST_MAX_PRECREATE) {
1615 LCONSOLE(D_INFO, "%s: too large difference between MDS "
1616 "LAST_ID "DFID" (%llu) and OST LAST_ID "DFID" "
1617 "(%llu), trust the OST\n",
1618 ofd_name(ofd), PFID(&oa->o_oi.oi_fid), oid,
1619 PFID(&oseq->os_oi.oi_fid),
1620 ofd_seq_last_oid(oseq));
1622 /* Let MDS know that we are so far ahead. */
1623 rc = ostid_set_id(&rep_oa->o_oi,
1624 ofd_seq_last_oid(oseq) + 1);
1625 } else if (diff < 0) {
1626 rc = ofd_orphans_destroy(tsi->tsi_env, exp,
1628 oseq->os_destroys_in_progress = 0;
1630 /* XXX: Used by MDS for the first time! */
1631 oseq->os_destroys_in_progress = 0;
1634 if (unlikely(exp->exp_filter_data.fed_lastid_gen !=
1635 ofd->ofd_lastid_gen)) {
1636 /* Keep the export ref so we can send the reply. */
1637 ofd_obd_disconnect(class_export_get(exp));
1638 GOTO(out_nolock, rc = -ENOTCONN);
1641 mutex_lock(&oseq->os_create_lock);
1642 if (lustre_msg_get_conn_cnt(tgt_ses_req(tsi)->rq_reqmsg) <
1643 exp->exp_conn_cnt) {
1644 CERROR("%s: dropping old precreate request\n",
1648 /* only precreate if seq is 0, IDIF or normal and also o_id
1649 * must be specfied */
1650 if ((!fid_seq_is_mdt(seq) && !fid_seq_is_norm(seq) &&
1651 !fid_seq_is_idif(seq)) || oid == 0) {
1652 diff = 1; /* shouldn't we create this right now? */
1654 diff = oid - ofd_seq_last_oid(oseq);
1655 /* Do sync create if the seq is about to used up */
1656 if (fid_seq_is_idif(seq) || fid_seq_is_mdt0(seq)) {
1657 if (unlikely(oid >= IDIF_MAX_OID - 1))
1659 } else if (fid_seq_is_norm(seq)) {
1661 LUSTRE_DATA_SEQ_MAX_WIDTH - 1))
1664 CERROR("%s : invalid o_seq "DOSTID"\n",
1665 ofd_name(ofd), POSTID(&oa->o_oi));
1666 GOTO(out, rc = -EINVAL);
1671 CERROR("%s: invalid precreate request for "
1672 DOSTID", last_id %llu. "
1673 "Likely MDS last_id corruption\n",
1674 ofd_name(ofd), POSTID(&oa->o_oi),
1675 ofd_seq_last_oid(oseq));
1676 GOTO(out, rc = -EINVAL);
1681 time64_t enough_time = ktime_get_seconds() + DISK_TIMEOUT;
1686 if (!(oa->o_valid & OBD_MD_FLFLAGS) ||
1687 !(oa->o_flags & OBD_FL_DELORPHAN)) {
1688 /* don't enforce grant during orphan recovery */
1689 granted = tgt_grant_create(tsi->tsi_env,
1690 ofd_obd(ofd)->obd_self_export,
1695 CDEBUG(D_HA, "%s: failed to acquire grant "
1696 "space for precreate (%lld): rc = %d\n",
1697 ofd_name(ofd), diff, rc);
1702 /* This can happen if a new OST is formatted and installed
1703 * in place of an old one at the same index. Instead of
1704 * precreating potentially millions of deleted old objects
1705 * (possibly filling the OST), only precreate the last batch.
1706 * LFSCK will eventually clean up any orphans. LU-14 */
1707 if (diff > 5 * OST_MAX_PRECREATE) {
1708 diff = OST_MAX_PRECREATE / 2;
1709 LCONSOLE_WARN("%s: Too many FIDs to precreate "
1710 "OST replaced or reformatted: "
1711 "LFSCK will clean up",
1714 CDEBUG(D_HA, "%s: precreate FID "DOSTID" is over "
1715 "%u larger than the LAST_ID "DOSTID", only "
1716 "precreating the last %lld objects.\n",
1717 ofd_name(ofd), POSTID(&oa->o_oi),
1718 5 * OST_MAX_PRECREATE,
1719 POSTID(&oseq->os_oi), diff);
1720 ofd_seq_last_oid_set(oseq, ostid_id(&oa->o_oi) - diff);
1724 next_id = ofd_seq_last_oid(oseq) + 1;
1725 count = ofd_precreate_batch(ofd, (int)diff);
1727 CDEBUG(D_HA, "%s: reserve %d objects in group %#llx"
1728 " at %llu\n", ofd_name(ofd),
1729 count, seq, next_id);
1731 if (!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
1732 && ktime_get_seconds() > enough_time) {
1733 CDEBUG(D_HA, "%s: Slow creates, %d/%lld objects"
1734 " created at a rate of %d/s\n",
1735 ofd_name(ofd), created, diff + created,
1736 created / DISK_TIMEOUT);
1740 rc = ofd_precreate_objects(tsi->tsi_env, ofd, next_id,
1741 oseq, count, sync_trans);
1745 } else if (rc < 0) {
1751 lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY)
1752 LCONSOLE_WARN("%s: can't create the same count of"
1753 " objects when replaying the request"
1754 " (diff is %lld). see LU-4621\n",
1755 ofd_name(ofd), diff);
1758 /* some objects got created, we can return
1759 * them, even if last creation failed */
1762 CERROR("%s: unable to precreate: rc = %d\n",
1765 if (!(oa->o_valid & OBD_MD_FLFLAGS) ||
1766 !(oa->o_flags & OBD_FL_DELORPHAN)) {
1767 tgt_grant_commit(ofd_obd(ofd)->obd_self_export,
1772 rc = ostid_set_id(&rep_oa->o_oi, ofd_seq_last_oid(oseq));
1775 ofd_counter_incr(exp, LPROC_OFD_STATS_CREATE,
1778 mutex_unlock(&oseq->os_create_lock);
1781 #if LUSTRE_VERSION_CODE < OBD_OCD_VERSION(2, 8, 53, 0)
1782 struct ofd_thread_info *info = ofd_info(tsi->tsi_env);
1783 struct lu_fid *fid = &info->fti_fid;
1785 /* For compatible purpose, it needs to convert back to
1786 * OST ID before put it on wire. */
1787 *fid = rep_oa->o_oi.oi_fid;
1788 fid_to_ostid(fid, &rep_oa->o_oi);
1790 rep_oa->o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP;
1792 ofd_seq_put(tsi->tsi_env, oseq);
1795 up_read(&ofd->ofd_lastid_rwsem);
1800 * OFD request handler for OST_DESTROY RPC.
1802 * This is OFD-specific part of request handling. It destroys data objects
1803 * related to destroyed object on MDT.
1805 * \param[in] tsi target session environment for this request
1807 * \retval 0 if successful
1808 * \retval negative value on error
1810 static int ofd_destroy_hdl(struct tgt_session_info *tsi)
1812 const struct ost_body *body = tsi->tsi_ost_body;
1813 struct ost_body *repbody;
1814 struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
1815 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1816 struct lu_fid *fid = &fti->fti_fid;
1823 if (OBD_FAIL_CHECK(OBD_FAIL_OST_EROFS))
1826 /* This is old case for clients before Lustre 2.4 */
1827 /* If there's a DLM request, cancel the locks mentioned in it */
1828 if (req_capsule_field_present(tsi->tsi_pill, &RMF_DLM_REQ,
1830 struct ldlm_request *dlm;
1832 dlm = req_capsule_client_get(tsi->tsi_pill, &RMF_DLM_REQ);
1835 ldlm_request_cancel(tgt_ses_req(tsi), dlm, 0, LATF_SKIP);
1838 *fid = body->oa.o_oi.oi_fid;
1839 oid = ostid_id(&body->oa.o_oi);
1842 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1844 /* check that o_misc makes sense */
1845 if (body->oa.o_valid & OBD_MD_FLOBJCOUNT)
1846 count = body->oa.o_misc;
1848 count = 1; /* default case - single destroy */
1850 CDEBUG(D_HA, "%s: Destroy object "DOSTID" count %d\n", ofd_name(ofd),
1851 POSTID(&body->oa.o_oi), count);
1856 lrc = ofd_destroy_by_fid(tsi->tsi_env, ofd, fid, 0);
1857 if (lrc == -ENOENT) {
1859 "%s: destroying non-existent object "DFID"\n",
1860 ofd_name(ofd), PFID(fid));
1861 /* rewrite rc with -ENOENT only if it is 0 */
1864 } else if (lrc != 0) {
1865 CERROR("%s: error destroying object "DFID": %d\n",
1866 ofd_name(ofd), PFID(fid), lrc);
1872 lrc = fid_set_id(fid, oid);
1873 if (unlikely(lrc != 0 && count > 0))
1874 GOTO(out, rc = lrc);
1877 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_DESTROY,
1883 fid_to_ostid(fid, &repbody->oa.o_oi);
1888 * OFD request handler for OST_STATFS RPC.
1890 * This function gets statfs data from storage as part of request
1893 * \param[in] tsi target session environment for this request
1895 * \retval 0 if successful
1896 * \retval negative value on error
1898 static int ofd_statfs_hdl(struct tgt_session_info *tsi)
1900 struct obd_statfs *osfs;
1905 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_STATFS_DELAY, 10);
1907 osfs = req_capsule_server_get(tsi->tsi_pill, &RMF_OBD_STATFS);
1909 rc = ofd_statfs(tsi->tsi_env, tsi->tsi_exp, osfs,
1910 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS, 0);
1912 CERROR("%s: statfs failed: rc = %d\n",
1913 tgt_name(tsi->tsi_tgt), rc);
1915 if (OBD_FAIL_CHECK(OBD_FAIL_OST_STATFS_EINPROGRESS))
1918 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_STATFS,
1925 * OFD request handler for OST_SYNC RPC.
1927 * Sync object data or all filesystem data to the disk and pack the
1930 * \param[in] tsi target session environment for this request
1932 * \retval 0 if successful
1933 * \retval negative value on error
1935 static int ofd_sync_hdl(struct tgt_session_info *tsi)
1937 struct ost_body *body = tsi->tsi_ost_body;
1938 struct ost_body *repbody;
1939 struct ofd_thread_info *fti = tsi2ofd_info(tsi);
1940 struct ofd_device *ofd = ofd_exp(tsi->tsi_exp);
1941 struct ofd_object *fo = NULL;
1946 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
1948 /* if no objid is specified, it means "sync whole filesystem" */
1949 if (!fid_is_zero(&tsi->tsi_fid)) {
1950 fo = ofd_object_find_exists(tsi->tsi_env, ofd, &tsi->tsi_fid);
1952 RETURN(PTR_ERR(fo));
1955 rc = tgt_sync(tsi->tsi_env, tsi->tsi_tgt,
1956 fo != NULL ? ofd_object_child(fo) : NULL,
1957 repbody->oa.o_size, repbody->oa.o_blocks);
1961 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_SYNC,
1966 repbody->oa.o_oi = body->oa.o_oi;
1967 repbody->oa.o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
1969 rc = ofd_attr_get(tsi->tsi_env, fo, &fti->fti_attr);
1971 obdo_from_la(&repbody->oa, &fti->fti_attr,
1974 /* don't return rc from getattr */
1979 ofd_object_put(tsi->tsi_env, fo);
1984 * OFD request handler for OST_PUNCH RPC.
1986 * This is part of request processing. Validate request fields,
1987 * punch (truncate) the given OFD object and pack reply.
1989 * \param[in] tsi target session environment for this request
1991 * \retval 0 if successful
1992 * \retval negative value on error
1994 static int ofd_punch_hdl(struct tgt_session_info *tsi)
1996 const struct obdo *oa = &tsi->tsi_ost_body->oa;
1997 struct ost_body *repbody;
1998 struct ofd_thread_info *info = tsi2ofd_info(tsi);
1999 struct ldlm_namespace *ns = tsi->tsi_tgt->lut_obd->obd_namespace;
2000 struct ldlm_resource *res;
2001 struct ofd_object *fo;
2003 struct lustre_handle lh = { 0, };
2010 OBD_FAIL_TIMEOUT(OBD_FAIL_OST_PAUSE_PUNCH, cfs_fail_val);
2012 /* check that we do support OBD_CONNECT_TRUNCLOCK. */
2013 CLASSERT(OST_CONNECT_SUPPORTED & OBD_CONNECT_TRUNCLOCK);
2015 if ((oa->o_valid & (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS)) !=
2016 (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS))
2017 RETURN(err_serious(-EPROTO));
2019 repbody = req_capsule_server_get(tsi->tsi_pill, &RMF_OST_BODY);
2020 if (repbody == NULL)
2021 RETURN(err_serious(-ENOMEM));
2023 /* punch start,end are passed in o_size,o_blocks throught wire */
2027 if (end != OBD_OBJECT_EOF) /* Only truncate is supported */
2030 /* standard truncate optimization: if file body is completely
2031 * destroyed, don't send data back to the server. */
2033 flags |= LDLM_FL_AST_DISCARD_DATA;
2035 repbody->oa.o_oi = oa->o_oi;
2036 repbody->oa.o_valid = OBD_MD_FLID;
2038 srvlock = oa->o_valid & OBD_MD_FLFLAGS &&
2039 oa->o_flags & OBD_FL_SRVLOCK;
2042 rc = tgt_extent_lock(ns, &tsi->tsi_resid, start, end, &lh,
2048 CDEBUG(D_INODE, "calling punch for object "DFID", valid = %#llx"
2049 ", start = %lld, end = %lld\n", PFID(&tsi->tsi_fid),
2050 oa->o_valid, start, end);
2052 fo = ofd_object_find_exists(tsi->tsi_env, ofd_exp(tsi->tsi_exp),
2055 GOTO(out, rc = PTR_ERR(fo));
2057 la_from_obdo(&info->fti_attr, oa,
2058 OBD_MD_FLMTIME | OBD_MD_FLATIME | OBD_MD_FLCTIME);
2059 info->fti_attr.la_size = start;
2060 info->fti_attr.la_valid |= LA_SIZE;
2062 rc = ofd_object_punch(tsi->tsi_env, fo, start, end, &info->fti_attr,
2067 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_PUNCH,
2071 ofd_object_put(tsi->tsi_env, fo);
2074 tgt_extent_unlock(&lh, LCK_PW);
2076 /* we do not call this before to avoid lu_object_find() in
2077 * ->lvbo_update() holding another reference on the object.
2078 * otherwise concurrent destroy can make the object unavailable
2079 * for 2nd lu_object_find() waiting for the first reference
2080 * to go... deadlock! */
2081 res = ldlm_resource_get(ns, NULL, &tsi->tsi_resid,
2084 ldlm_res_lvbo_update(res, NULL, 0);
2085 ldlm_resource_putref(res);
2091 static int ofd_ladvise_prefetch(const struct lu_env *env,
2092 struct ofd_object *fo,
2093 struct niobuf_local *lnb,
2094 __u64 start, __u64 end, enum dt_bufs_type dbt)
2096 struct ofd_thread_info *info = ofd_info(env);
2097 pgoff_t start_index, end_index, pages;
2098 struct niobuf_remote rnb;
2099 unsigned long nr_local;
2105 ofd_read_lock(env, fo);
2106 if (!ofd_object_exists(fo))
2107 GOTO(out_unlock, rc = -ENOENT);
2109 rc = ofd_attr_get(env, fo, &info->fti_attr);
2111 GOTO(out_unlock, rc);
2113 if (end > info->fti_attr.la_size)
2114 end = info->fti_attr.la_size;
2117 GOTO(out_unlock, rc);
2119 /* We need page aligned offset and length */
2120 start_index = start >> PAGE_SHIFT;
2121 end_index = (end - 1) >> PAGE_SHIFT;
2122 pages = end_index - start_index + 1;
2124 nr_local = pages <= PTLRPC_MAX_BRW_PAGES ? pages :
2125 PTLRPC_MAX_BRW_PAGES;
2126 rnb.rnb_offset = start_index << PAGE_SHIFT;
2127 rnb.rnb_len = nr_local << PAGE_SHIFT;
2128 rc = dt_bufs_get(env, ofd_object_child(fo), &rnb, lnb, dbt);
2129 if (unlikely(rc < 0))
2132 rc = dt_read_prep(env, ofd_object_child(fo), lnb, nr_local);
2133 dt_bufs_put(env, ofd_object_child(fo), lnb, nr_local);
2136 start_index += nr_local;
2141 ofd_read_unlock(env, fo);
2146 * OFD request handler for OST_LADVISE RPC.
2148 * Tune cache or perfetch policies according to advices.
2150 * \param[in] tsi target session environment for this request
2152 * \retval 0 if successful
2153 * \retval negative errno on error
2155 static int ofd_ladvise_hdl(struct tgt_session_info *tsi)
2157 struct ptlrpc_request *req = tgt_ses_req(tsi);
2158 struct obd_export *exp = tsi->tsi_exp;
2159 struct ofd_device *ofd = ofd_exp(exp);
2160 struct ost_body *body, *repbody;
2161 struct ofd_thread_info *info;
2162 struct ofd_object *fo;
2163 struct ptlrpc_thread *svc_thread = req->rq_svc_thread;
2164 const struct lu_env *env = svc_thread->t_env;
2165 struct tgt_thread_big_cache *tbc = svc_thread->t_data;
2166 enum dt_bufs_type dbt = DT_BUFS_TYPE_READAHEAD;
2167 struct lu_ladvise *ladvise;
2169 struct ladvise_hdr *ladvise_hdr;
2170 struct obd_ioobj ioo;
2171 struct lustre_handle lockh = { 0 };
2174 struct dt_object *dob;
2180 CFS_FAIL_TIMEOUT(OBD_FAIL_OST_LADVISE_PAUSE, cfs_fail_val);
2181 body = tsi->tsi_ost_body;
2183 if ((body->oa.o_valid & OBD_MD_FLID) != OBD_MD_FLID)
2184 RETURN(err_serious(-EPROTO));
2186 ladvise_hdr = req_capsule_client_get(tsi->tsi_pill,
2187 &RMF_OST_LADVISE_HDR);
2188 if (ladvise_hdr == NULL)
2189 RETURN(err_serious(-EPROTO));
2191 if (ladvise_hdr->lah_magic != LADVISE_MAGIC ||
2192 ladvise_hdr->lah_count < 1)
2193 RETURN(err_serious(-EPROTO));
2195 if ((ladvise_hdr->lah_flags & (~LF_MASK)) != 0)
2196 RETURN(err_serious(-EPROTO));
2198 ladvise = req_capsule_client_get(tsi->tsi_pill, &RMF_OST_LADVISE);
2199 if (ladvise == NULL)
2200 RETURN(err_serious(-EPROTO));
2202 num_advise = req_capsule_get_size(&req->rq_pill,
2203 &RMF_OST_LADVISE, RCL_CLIENT) /
2205 if (num_advise < ladvise_hdr->lah_count)
2206 RETURN(err_serious(-EPROTO));
2208 repbody = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
2209 repbody->oa = body->oa;
2211 info = ofd_info_init(env, exp);
2213 rc = ostid_to_fid(&info->fti_fid, &body->oa.o_oi,
2214 ofd->ofd_lut.lut_lsd.lsd_osd_index);
2218 fo = ofd_object_find(env, ofd, &info->fti_fid);
2223 LASSERT(fo != NULL);
2224 dob = ofd_object_child(fo);
2226 if (ptlrpc_connection_is_local(exp->exp_connection))
2227 dbt |= DT_BUFS_TYPE_LOCAL;
2229 for (i = 0; i < num_advise; i++, ladvise++) {
2230 start = ladvise->lla_start;
2231 end = ladvise->lla_end;
2233 rc = err_serious(-EPROTO);
2237 /* Handle different advice types */
2238 switch (ladvise->lla_advice) {
2242 case LU_LADVISE_WILLREAD:
2246 ioo.ioo_oid = body->oa.o_oi;
2248 rc = tgt_extent_lock(exp->exp_obd->obd_namespace,
2249 &tsi->tsi_resid, start, end - 1,
2250 &lockh, LCK_PR, &flags);
2254 req->rq_status = ofd_ladvise_prefetch(env, fo,
2257 tgt_extent_unlock(&lockh, LCK_PR);
2259 case LU_LADVISE_DONTNEED:
2260 rc = dt_ladvise(env, dob, ladvise->lla_start,
2261 ladvise->lla_end, LU_LADVISE_DONTNEED);
2268 ofd_object_put(env, fo);
2269 req->rq_status = rc;
2274 * OFD request handler for OST_QUOTACTL RPC.
2276 * This is part of request processing to validate incoming request fields,
2277 * get the requested data from OSD and pack reply.
2279 * \param[in] tsi target session environment for this request
2281 * \retval 0 if successful
2282 * \retval negative value on error
2284 static int ofd_quotactl(struct tgt_session_info *tsi)
2286 struct obd_quotactl *oqctl, *repoqc;
2287 struct lu_nodemap *nodemap;
2293 oqctl = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_QUOTACTL);
2295 RETURN(err_serious(-EPROTO));
2297 repoqc = req_capsule_server_get(tsi->tsi_pill, &RMF_OBD_QUOTACTL);
2299 RETURN(err_serious(-ENOMEM));
2303 nodemap = nodemap_get_from_exp(tsi->tsi_exp);
2304 if (IS_ERR(nodemap))
2305 RETURN(PTR_ERR(nodemap));
2308 if (oqctl->qc_type == USRQUOTA)
2309 id = nodemap_map_id(nodemap, NODEMAP_UID,
2310 NODEMAP_CLIENT_TO_FS,
2312 else if (oqctl->qc_type == GRPQUOTA)
2313 id = nodemap_map_id(nodemap, NODEMAP_GID,
2314 NODEMAP_CLIENT_TO_FS,
2317 nodemap_putref(nodemap);
2319 if (repoqc->qc_id != id)
2320 swap(repoqc->qc_id, id);
2322 rc = lquotactl_slv(tsi->tsi_env, tsi->tsi_tgt->lut_bottom, repoqc);
2324 ofd_counter_incr(tsi->tsi_exp, LPROC_OFD_STATS_QUOTACTL,
2327 if (repoqc->qc_id != id)
2328 swap(repoqc->qc_id, id);
2334 * Calculate the amount of time for lock prolongation.
2336 * This is helper for ofd_prolong_extent_locks() function to get
2337 * the timeout extra time.
2339 * \param[in] req current request
2341 * \retval amount of time to extend the timeout with
2343 static inline time64_t prolong_timeout(struct ptlrpc_request *req)
2345 struct ptlrpc_service_part *svcpt = req->rq_rqbd->rqbd_svcpt;
2346 time64_t req_timeout;
2349 return obd_timeout / 2;
2351 req_timeout = req->rq_deadline - req->rq_arrival_time.tv_sec;
2352 return max_t(time64_t, at_est2timeout(at_get(&svcpt->scp_at_estimate)),
2357 * Prolong lock timeout for the given extent.
2359 * This function finds all locks related with incoming request and
2360 * prolongs their timeout.
2362 * If a client is holding a lock for a long time while it sends
2363 * read or write RPCs to the OST for the object under this lock,
2364 * then we don't want the OST to evict the client. Otherwise,
2365 * if the network or disk is very busy then the client may not
2366 * be able to make any progress to clear out dirty pages under
2367 * the lock and the application will fail.
2369 * Every time a Bulk Read/Write (BRW) request arrives for the object
2370 * covered by the lock, extend the timeout on that lock. The RPC should
2371 * contain a lock handle for the lock it is using, but this
2372 * isn't handled correctly by all client versions, and the
2373 * request may cover multiple locks.
2375 * \param[in] tsi target session environment for this request
2376 * \param[in] data struct of data to prolong locks
2379 static void ofd_prolong_extent_locks(struct tgt_session_info *tsi,
2380 struct ldlm_prolong_args *data)
2382 struct obdo *oa = &tsi->tsi_ost_body->oa;
2383 struct ldlm_lock *lock;
2387 data->lpa_timeout = prolong_timeout(tgt_ses_req(tsi));
2388 data->lpa_export = tsi->tsi_exp;
2389 data->lpa_resid = tsi->tsi_resid;
2391 CDEBUG(D_RPCTRACE, "Prolong locks for req %p with x%llu"
2392 " ext(%llu->%llu)\n", tgt_ses_req(tsi),
2393 tgt_ses_req(tsi)->rq_xid, data->lpa_extent.start,
2394 data->lpa_extent.end);
2396 if (oa->o_valid & OBD_MD_FLHANDLE) {
2397 /* mostly a request should be covered by only one lock, try
2399 lock = ldlm_handle2lock(&oa->o_handle);
2401 /* Fast path to check if the lock covers the whole IO
2402 * region exclusively. */
2403 if (ldlm_extent_contain(&lock->l_policy_data.l_extent,
2404 &data->lpa_extent)) {
2406 LASSERT(lock->l_export == data->lpa_export);
2407 ldlm_lock_prolong_one(lock, data);
2408 LDLM_LOCK_PUT(lock);
2409 if (data->lpa_locks_cnt > 0)
2411 /* The lock was destroyed probably lets try
2414 lock->l_last_used = ktime_get();
2415 LDLM_LOCK_PUT(lock);
2420 ldlm_resource_prolong(data);
2425 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_match for OFD RW requests.
2427 * Determine if \a lock and the lock from request \a req are equivalent
2428 * by comparing their resource names, modes, and extents.
2430 * It is used to give priority to read and write RPCs being done
2431 * under this lock so that the client can drop the contended
2432 * lock more quickly and let other clients use it. This improves
2433 * overall performance in the case where the first client gets a
2434 * very large lock extent that prevents other clients from
2435 * submitting their writes.
2437 * \param[in] req ptlrpc_request being processed
2438 * \param[in] lock contended lock to match
2440 * \retval 1 if lock is matched
2441 * \retval 0 otherwise
2443 static int ofd_rw_hpreq_lock_match(struct ptlrpc_request *req,
2444 struct ldlm_lock *lock)
2446 struct niobuf_remote *rnb;
2447 struct obd_ioobj *ioo;
2448 enum ldlm_mode mode;
2449 struct ldlm_extent ext;
2450 __u32 opc = lustre_msg_get_opc(req->rq_reqmsg);
2454 ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
2455 LASSERT(ioo != NULL);
2457 rnb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
2458 LASSERT(rnb != NULL);
2460 ext.start = rnb->rnb_offset;
2461 rnb += ioo->ioo_bufcnt - 1;
2462 ext.end = rnb->rnb_offset + rnb->rnb_len - 1;
2464 LASSERT(lock->l_resource != NULL);
2465 if (!ostid_res_name_eq(&ioo->ioo_oid, &lock->l_resource->lr_name))
2468 /* a bulk write can only hold a reference on a PW extent lock
2471 mode = LCK_PW | LCK_GROUP;
2472 if (opc == OST_READ)
2473 /* whereas a bulk read can be protected by either a PR or PW
2477 if (!(lock->l_granted_mode & mode))
2480 RETURN(ldlm_extent_overlap(&lock->l_policy_data.l_extent, &ext));
2484 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_check for OFD RW requests.
2486 * Check for whether the given PTLRPC request (\a req) is blocking
2487 * an LDLM lock cancel. Also checks whether the request is covered by an LDLM
2490 * \param[in] req the incoming request
2492 * \retval 1 if \a req is blocking an LDLM lock cancel
2493 * \retval 0 if it is not
2494 * \retval -ESTALE if lock is not found
2496 static int ofd_rw_hpreq_check(struct ptlrpc_request *req)
2498 struct tgt_session_info *tsi;
2499 struct obd_ioobj *ioo;
2500 struct niobuf_remote *rnb;
2502 struct ldlm_prolong_args pa = { 0 };
2506 /* Don't use tgt_ses_info() to get session info, because lock_match()
2507 * can be called while request has no processing thread yet. */
2508 tsi = lu_context_key_get(&req->rq_session, &tgt_session_key);
2511 * Use LASSERT below because malformed RPCs should have
2512 * been filtered out in tgt_hpreq_handler().
2514 opc = lustre_msg_get_opc(req->rq_reqmsg);
2515 LASSERT(opc == OST_READ || opc == OST_WRITE);
2517 ioo = req_capsule_client_get(&req->rq_pill, &RMF_OBD_IOOBJ);
2518 LASSERT(ioo != NULL);
2520 rnb = req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE);
2521 LASSERT(rnb != NULL);
2522 LASSERT(!(rnb->rnb_flags & OBD_BRW_SRVLOCK));
2524 pa.lpa_mode = LCK_PW | LCK_GROUP;
2525 if (opc == OST_READ)
2526 pa.lpa_mode |= LCK_PR;
2528 pa.lpa_extent.start = rnb->rnb_offset;
2529 rnb += ioo->ioo_bufcnt - 1;
2530 pa.lpa_extent.end = rnb->rnb_offset + rnb->rnb_len - 1;
2532 DEBUG_REQ(D_RPCTRACE, req, "%s %s: refresh rw locks: "DFID
2533 " (%llu->%llu)\n", tgt_name(tsi->tsi_tgt),
2534 current->comm, PFID(&tsi->tsi_fid), pa.lpa_extent.start,
2537 ofd_prolong_extent_locks(tsi, &pa);
2539 CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p.\n",
2540 tgt_name(tsi->tsi_tgt), pa.lpa_blocks_cnt, req);
2542 if (pa.lpa_blocks_cnt > 0)
2545 RETURN(pa.lpa_locks_cnt > 0 ? 0 : -ESTALE);
2549 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_fini for OFD RW requests.
2551 * Called after the request has been handled. It refreshes lock timeout again
2552 * so that client has more time to send lock cancel RPC.
2554 * \param[in] req request which is being processed.
2556 static void ofd_rw_hpreq_fini(struct ptlrpc_request *req)
2558 ofd_rw_hpreq_check(req);
2562 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_match for OST_PUNCH request.
2564 * This function checks if the given lock is the same by its resname, mode
2565 * and extent as one taken from the request.
2566 * It is used to give priority to punch/truncate RPCs that might lead to
2567 * the fastest release of that lock when a lock is contended.
2569 * \param[in] req ptlrpc_request being processed
2570 * \param[in] lock contended lock to match
2572 * \retval 1 if lock is matched
2573 * \retval 0 otherwise
2575 static int ofd_punch_hpreq_lock_match(struct ptlrpc_request *req,
2576 struct ldlm_lock *lock)
2578 struct tgt_session_info *tsi;
2580 struct ldlm_extent ext;
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);
2589 * Use LASSERT below because malformed RPCs should have
2590 * been filtered out in tgt_hpreq_handler().
2592 LASSERT(tsi->tsi_ost_body != NULL);
2593 if (tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLHANDLE &&
2594 tsi->tsi_ost_body->oa.o_handle.cookie == lock->l_handle.h_cookie)
2597 oa = &tsi->tsi_ost_body->oa;
2598 ext.start = oa->o_size;
2599 ext.end = oa->o_blocks;
2601 LASSERT(lock->l_resource != NULL);
2602 if (!ostid_res_name_eq(&oa->o_oi, &lock->l_resource->lr_name))
2605 if (!(lock->l_granted_mode & (LCK_PW | LCK_GROUP)))
2608 RETURN(ldlm_extent_overlap(&lock->l_policy_data.l_extent, &ext));
2612 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_check for OST_PUNCH request.
2614 * High-priority queue request check for whether the given punch request
2615 * (\a req) is blocking an LDLM lock cancel. Also checks whether the request is
2616 * covered by an LDLM lock.
2620 * \param[in] req the incoming request
2622 * \retval 1 if \a req is blocking an LDLM lock cancel
2623 * \retval 0 if it is not
2624 * \retval -ESTALE if lock is not found
2626 static int ofd_punch_hpreq_check(struct ptlrpc_request *req)
2628 struct tgt_session_info *tsi;
2630 struct ldlm_prolong_args pa = { 0 };
2634 /* Don't use tgt_ses_info() to get session info, because lock_match()
2635 * can be called while request has no processing thread yet. */
2636 tsi = lu_context_key_get(&req->rq_session, &tgt_session_key);
2637 LASSERT(tsi != NULL);
2638 oa = &tsi->tsi_ost_body->oa;
2640 LASSERT(!(oa->o_valid & OBD_MD_FLFLAGS &&
2641 oa->o_flags & OBD_FL_SRVLOCK));
2643 pa.lpa_mode = LCK_PW | LCK_GROUP;
2644 pa.lpa_extent.start = oa->o_size;
2645 pa.lpa_extent.end = oa->o_blocks;
2648 "%s: refresh locks: %llu/%llu (%llu->%llu)\n",
2649 tgt_name(tsi->tsi_tgt), tsi->tsi_resid.name[0],
2650 tsi->tsi_resid.name[1], pa.lpa_extent.start, pa.lpa_extent.end);
2652 ofd_prolong_extent_locks(tsi, &pa);
2654 CDEBUG(D_DLMTRACE, "%s: refreshed %u locks timeout for req %p.\n",
2655 tgt_name(tsi->tsi_tgt), pa.lpa_blocks_cnt, req);
2657 if (pa.lpa_blocks_cnt > 0)
2660 RETURN(pa.lpa_locks_cnt > 0 ? 0 : -ESTALE);
2664 * Implementation of ptlrpc_hpreq_ops::hpreq_lock_fini for OST_PUNCH request.
2666 * Called after the request has been handled. It refreshes lock timeout again
2667 * so that client has more time to send lock cancel RPC.
2669 * \param[in] req request which is being processed.
2671 static void ofd_punch_hpreq_fini(struct ptlrpc_request *req)
2673 ofd_punch_hpreq_check(req);
2676 static struct ptlrpc_hpreq_ops ofd_hpreq_rw = {
2677 .hpreq_lock_match = ofd_rw_hpreq_lock_match,
2678 .hpreq_check = ofd_rw_hpreq_check,
2679 .hpreq_fini = ofd_rw_hpreq_fini
2682 static struct ptlrpc_hpreq_ops ofd_hpreq_punch = {
2683 .hpreq_lock_match = ofd_punch_hpreq_lock_match,
2684 .hpreq_check = ofd_punch_hpreq_check,
2685 .hpreq_fini = ofd_punch_hpreq_fini
2689 * Assign high priority operations to an IO request.
2691 * Check if the incoming request is a candidate for
2692 * high-priority processing. If it is, assign it a high
2693 * priority operations table.
2695 * \param[in] tsi target session environment for this request
2697 static void ofd_hp_brw(struct tgt_session_info *tsi)
2699 struct niobuf_remote *rnb;
2700 struct obd_ioobj *ioo;
2704 ioo = req_capsule_client_get(tsi->tsi_pill, &RMF_OBD_IOOBJ);
2705 LASSERT(ioo != NULL); /* must exist after request preprocessing */
2706 if (ioo->ioo_bufcnt > 0) {
2707 rnb = req_capsule_client_get(tsi->tsi_pill, &RMF_NIOBUF_REMOTE);
2708 LASSERT(rnb != NULL); /* must exist after request preprocessing */
2710 /* no high priority if server lock is needed */
2711 if (rnb->rnb_flags & OBD_BRW_SRVLOCK ||
2712 (lustre_msg_get_flags(tgt_ses_req(tsi)->rq_reqmsg)
2716 tgt_ses_req(tsi)->rq_ops = &ofd_hpreq_rw;
2720 * Assign high priority operations to an punch request.
2722 * Check if the incoming request is a candidate for
2723 * high-priority processing. If it is, assign it a high
2724 * priority operations table.
2726 * \param[in] tsi target session environment for this request
2728 static void ofd_hp_punch(struct tgt_session_info *tsi)
2730 LASSERT(tsi->tsi_ost_body != NULL); /* must exists if we are here */
2731 /* no high-priority if server lock is needed */
2732 if ((tsi->tsi_ost_body->oa.o_valid & OBD_MD_FLFLAGS &&
2733 tsi->tsi_ost_body->oa.o_flags & OBD_FL_SRVLOCK) ||
2734 tgt_conn_flags(tsi) & OBD_CONNECT_MDS ||
2735 lustre_msg_get_flags(tgt_ses_req(tsi)->rq_reqmsg) & MSG_REPLAY)
2737 tgt_ses_req(tsi)->rq_ops = &ofd_hpreq_punch;
2740 #define OBD_FAIL_OST_READ_NET OBD_FAIL_OST_BRW_NET
2741 #define OBD_FAIL_OST_WRITE_NET OBD_FAIL_OST_BRW_NET
2742 #define OST_BRW_READ OST_READ
2743 #define OST_BRW_WRITE OST_WRITE
2746 * Table of OFD-specific request handlers
2748 * This table contains all opcodes accepted by OFD and
2749 * specifies handlers for them. The tgt_request_handler()
2750 * uses such table from each target to process incoming
2753 static struct tgt_handler ofd_tgt_handlers[] = {
2754 TGT_RPC_HANDLER(OST_FIRST_OPC,
2755 0, OST_CONNECT, tgt_connect,
2756 &RQF_CONNECT, LUSTRE_OBD_VERSION),
2757 TGT_RPC_HANDLER(OST_FIRST_OPC,
2758 0, OST_DISCONNECT, tgt_disconnect,
2759 &RQF_OST_DISCONNECT, LUSTRE_OBD_VERSION),
2760 TGT_RPC_HANDLER(OST_FIRST_OPC,
2761 0, OST_SET_INFO, ofd_set_info_hdl,
2762 &RQF_OBD_SET_INFO, LUSTRE_OST_VERSION),
2763 TGT_OST_HDL(0, OST_GET_INFO, ofd_get_info_hdl),
2764 TGT_OST_HDL(HABEO_CORPUS| HABEO_REFERO, OST_GETATTR, ofd_getattr_hdl),
2765 TGT_OST_HDL(HABEO_CORPUS| HABEO_REFERO | MUTABOR,
2766 OST_SETATTR, ofd_setattr_hdl),
2767 TGT_OST_HDL(0 | HABEO_REFERO | MUTABOR,
2768 OST_CREATE, ofd_create_hdl),
2769 TGT_OST_HDL(0 | HABEO_REFERO | MUTABOR,
2770 OST_DESTROY, ofd_destroy_hdl),
2771 TGT_OST_HDL(0 | HABEO_REFERO, OST_STATFS, ofd_statfs_hdl),
2772 TGT_OST_HDL_HP(HABEO_CORPUS| HABEO_REFERO,
2773 OST_BRW_READ, tgt_brw_read,
2775 /* don't set CORPUS flag for brw_write because -ENOENT may be valid case */
2776 TGT_OST_HDL_HP(HABEO_CORPUS| MUTABOR, OST_BRW_WRITE, tgt_brw_write,
2778 TGT_OST_HDL_HP(HABEO_CORPUS| HABEO_REFERO | MUTABOR,
2779 OST_PUNCH, ofd_punch_hdl,
2781 TGT_OST_HDL(HABEO_CORPUS| HABEO_REFERO, OST_SYNC, ofd_sync_hdl),
2782 TGT_OST_HDL(0 | HABEO_REFERO, OST_QUOTACTL, ofd_quotactl),
2783 TGT_OST_HDL(HABEO_CORPUS | HABEO_REFERO, OST_LADVISE, ofd_ladvise_hdl),
2786 static struct tgt_opc_slice ofd_common_slice[] = {
2788 .tos_opc_start = OST_FIRST_OPC,
2789 .tos_opc_end = OST_LAST_OPC,
2790 .tos_hs = ofd_tgt_handlers
2793 .tos_opc_start = OBD_FIRST_OPC,
2794 .tos_opc_end = OBD_LAST_OPC,
2795 .tos_hs = tgt_obd_handlers
2798 .tos_opc_start = LDLM_FIRST_OPC,
2799 .tos_opc_end = LDLM_LAST_OPC,
2800 .tos_hs = tgt_dlm_handlers
2803 .tos_opc_start = OUT_UPDATE_FIRST_OPC,
2804 .tos_opc_end = OUT_UPDATE_LAST_OPC,
2805 .tos_hs = tgt_out_handlers
2808 .tos_opc_start = SEQ_FIRST_OPC,
2809 .tos_opc_end = SEQ_LAST_OPC,
2810 .tos_hs = seq_handlers
2813 .tos_opc_start = LFSCK_FIRST_OPC,
2814 .tos_opc_end = LFSCK_LAST_OPC,
2815 .tos_hs = tgt_lfsck_handlers
2818 .tos_opc_start = SEC_FIRST_OPC,
2819 .tos_opc_end = SEC_LAST_OPC,
2820 .tos_hs = tgt_sec_ctx_handlers
2827 /* context key constructor/destructor: ofd_key_init(), ofd_key_fini() */
2828 LU_KEY_INIT_FINI(ofd, struct ofd_thread_info);
2831 * Implementation of lu_context_key::lct_key_exit.
2833 * Optional method called on lu_context_exit() for all allocated
2835 * It is used in OFD to sanitize context values which may be re-used
2836 * during another request processing by the same thread.
2838 * \param[in] ctx execution context
2839 * \param[in] key context key
2840 * \param[in] data ofd_thread_info
2842 static void ofd_key_exit(const struct lu_context *ctx,
2843 struct lu_context_key *key, void *data)
2845 struct ofd_thread_info *info = data;
2847 info->fti_env = NULL;
2848 info->fti_exp = NULL;
2851 info->fti_pre_version = 0;
2853 memset(&info->fti_attr, 0, sizeof info->fti_attr);
2856 struct lu_context_key ofd_thread_key = {
2857 .lct_tags = LCT_DT_THREAD,
2858 .lct_init = ofd_key_init,
2859 .lct_fini = ofd_key_fini,
2860 .lct_exit = ofd_key_exit
2864 * Initialize OFD device according to parameters in the config log \a cfg.
2866 * This is the main starting point of OFD initialization. It fills all OFD
2867 * parameters with their initial values and calls other initializing functions
2868 * to set up all OFD subsystems.
2870 * \param[in] env execution environment
2871 * \param[in] m OFD device
2872 * \param[in] ldt LU device type of OFD
2873 * \param[in] cfg configuration log
2875 * \retval 0 if successful
2876 * \retval negative value on error
2878 static int ofd_init0(const struct lu_env *env, struct ofd_device *m,
2879 struct lu_device_type *ldt, struct lustre_cfg *cfg)
2881 const char *dev = lustre_cfg_string(cfg, 0);
2882 struct ofd_thread_info *info = NULL;
2883 struct obd_device *obd;
2884 struct tg_grants_data *tgd = &m->ofd_lut.lut_tgd;
2886 struct nm_config_file *nodemap_config;
2887 struct obd_device_target *obt;
2892 obd = class_name2obd(dev);
2894 CERROR("Cannot find obd with name %s\n", dev);
2898 rc = lu_env_refill((struct lu_env *)env);
2903 obt->obt_magic = OBT_MAGIC;
2905 m->ofd_fmd_max_num = OFD_FMD_MAX_NUM_DEFAULT;
2906 m->ofd_fmd_max_age = OFD_FMD_MAX_AGE_DEFAULT;
2908 spin_lock_init(&m->ofd_flags_lock);
2909 m->ofd_raid_degraded = 0;
2910 m->ofd_syncjournal = 0;
2912 m->ofd_soft_sync_limit = OFD_SOFT_SYNC_LIMIT_DEFAULT;
2914 m->ofd_seq_count = 0;
2915 init_waitqueue_head(&m->ofd_inconsistency_thread.t_ctl_waitq);
2916 INIT_LIST_HEAD(&m->ofd_inconsistency_list);
2917 spin_lock_init(&m->ofd_inconsistency_lock);
2919 spin_lock_init(&m->ofd_batch_lock);
2920 init_rwsem(&m->ofd_lastid_rwsem);
2922 m->ofd_dt_dev.dd_lu_dev.ld_ops = &ofd_lu_ops;
2923 m->ofd_dt_dev.dd_lu_dev.ld_obd = obd;
2924 /* set this lu_device to obd, because error handling need it */
2925 obd->obd_lu_dev = &m->ofd_dt_dev.dd_lu_dev;
2927 rc = ofd_procfs_init(m);
2929 CERROR("Can't init ofd lprocfs, rc %d\n", rc);
2933 /* No connection accepted until configurations will finish */
2934 spin_lock(&obd->obd_dev_lock);
2935 obd->obd_no_conn = 1;
2936 spin_unlock(&obd->obd_dev_lock);
2937 obd->obd_replayable = 1;
2938 if (cfg->lcfg_bufcount > 4 && LUSTRE_CFG_BUFLEN(cfg, 4) > 0) {
2939 char *str = lustre_cfg_string(cfg, 4);
2941 if (strchr(str, 'n')) {
2942 CWARN("%s: recovery disabled\n", obd->obd_name);
2943 obd->obd_replayable = 0;
2947 info = ofd_info_init(env, NULL);
2949 GOTO(err_fini_proc, rc = -EFAULT);
2951 rc = ofd_stack_init(env, m, cfg);
2953 CERROR("Can't init device stack, rc %d\n", rc);
2954 GOTO(err_fini_proc, rc);
2957 ofd_procfs_add_brw_stats_symlink(m);
2959 snprintf(info->fti_u.name, sizeof(info->fti_u.name), "%s-%s",
2960 "filter"/*LUSTRE_OST_NAME*/, obd->obd_uuid.uuid);
2961 m->ofd_namespace = ldlm_namespace_new(obd, info->fti_u.name,
2962 LDLM_NAMESPACE_SERVER,
2963 LDLM_NAMESPACE_GREEDY,
2965 if (m->ofd_namespace == NULL)
2966 GOTO(err_fini_stack, rc = -ENOMEM);
2967 /* set obd_namespace for compatibility with old code */
2968 obd->obd_namespace = m->ofd_namespace;
2969 ldlm_register_intent(m->ofd_namespace, ofd_intent_policy);
2970 m->ofd_namespace->ns_lvbo = &ofd_lvbo;
2971 m->ofd_namespace->ns_lvbp = m;
2973 ptlrpc_init_client(LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
2974 "filter_ldlm_cb_client", &obd->obd_ldlm_client);
2976 rc = tgt_init(env, &m->ofd_lut, obd, m->ofd_osd, ofd_common_slice,
2977 OBD_FAIL_OST_ALL_REQUEST_NET,
2978 OBD_FAIL_OST_ALL_REPLY_NET);
2980 GOTO(err_free_ns, rc);
2982 tgd->tgd_reserved_pcnt = 0;
2984 m->ofd_brw_size = m->ofd_lut.lut_dt_conf.ddp_brw_size;
2985 m->ofd_cksum_types_supported = cksum_types_supported_server();
2986 m->ofd_precreate_batch = OFD_PRECREATE_BATCH_DEFAULT;
2987 if (tgd->tgd_osfs.os_bsize * tgd->tgd_osfs.os_blocks <
2988 OFD_PRECREATE_SMALL_FS)
2989 m->ofd_precreate_batch = OFD_PRECREATE_BATCH_SMALL;
2991 rc = ofd_fs_setup(env, m, obd);
2993 GOTO(err_fini_lut, rc);
2995 fid.f_seq = FID_SEQ_LOCAL_NAME;
2998 rc = local_oid_storage_init(env, m->ofd_osd, &fid,
3001 GOTO(err_fini_fs, rc);
3003 nodemap_config = nm_config_file_register_tgt(env, m->ofd_osd,
3005 if (IS_ERR(nodemap_config)) {
3006 rc = PTR_ERR(nodemap_config);
3008 GOTO(err_fini_los, rc);
3010 obt->obt_nodemap_config_file = nodemap_config;
3013 rc = ofd_start_inconsistency_verification_thread(m);
3015 GOTO(err_fini_nm, rc);
3017 tgt_adapt_sptlrpc_conf(&m->ofd_lut);
3022 nm_config_file_deregister_tgt(env, obt->obt_nodemap_config_file);
3023 obt->obt_nodemap_config_file = NULL;
3025 local_oid_storage_fini(env, m->ofd_los);
3028 ofd_fs_cleanup(env, m);
3030 tgt_fini(env, &m->ofd_lut);
3032 ldlm_namespace_free(m->ofd_namespace, NULL, obd->obd_force);
3033 obd->obd_namespace = m->ofd_namespace = NULL;
3035 ofd_stack_fini(env, m, &m->ofd_osd->dd_lu_dev);
3042 * Stop the OFD device
3044 * This function stops the OFD device and all its subsystems.
3045 * This is the end of OFD lifecycle.
3047 * \param[in] env execution environment
3048 * \param[in] m OFD device
3050 static void ofd_fini(const struct lu_env *env, struct ofd_device *m)
3052 struct obd_device *obd = ofd_obd(m);
3053 struct lu_device *d = &m->ofd_dt_dev.dd_lu_dev;
3054 struct lfsck_stop stop;
3056 stop.ls_status = LS_PAUSED;
3058 lfsck_stop(env, m->ofd_osd, &stop);
3059 ofd_stack_pre_fini(env, m, &m->ofd_dt_dev.dd_lu_dev);
3060 target_recovery_fini(obd);
3061 if (m->ofd_namespace != NULL)
3062 ldlm_namespace_free_prior(m->ofd_namespace, NULL,
3063 d->ld_obd->obd_force);
3065 obd_exports_barrier(obd);
3066 obd_zombie_barrier();
3068 tgt_fini(env, &m->ofd_lut);
3069 ofd_stop_inconsistency_verification_thread(m);
3070 lfsck_degister(env, m->ofd_osd);
3071 ofd_fs_cleanup(env, m);
3072 nm_config_file_deregister_tgt(env, obd->u.obt.obt_nodemap_config_file);
3073 obd->u.obt.obt_nodemap_config_file = NULL;
3075 if (m->ofd_namespace != NULL) {
3076 ldlm_namespace_free_post(m->ofd_namespace);
3077 d->ld_obd->obd_namespace = m->ofd_namespace = NULL;
3080 ofd_stack_fini(env, m, &m->ofd_dt_dev.dd_lu_dev);
3082 LASSERT(atomic_read(&d->ld_ref) == 0);
3083 server_put_mount(obd->obd_name, true);
3088 * Implementation of lu_device_type_operations::ldto_device_fini.
3090 * Finalize device. Dual to ofd_device_init(). It is called from
3091 * obd_precleanup() and stops the current device.
3093 * \param[in] env execution environment
3094 * \param[in] d LU device of OFD
3098 static struct lu_device *ofd_device_fini(const struct lu_env *env,
3099 struct lu_device *d)
3102 ofd_fini(env, ofd_dev(d));
3107 * Implementation of lu_device_type_operations::ldto_device_free.
3109 * Free OFD device. Dual to ofd_device_alloc().
3111 * \param[in] env execution environment
3112 * \param[in] d LU device of OFD
3116 static struct lu_device *ofd_device_free(const struct lu_env *env,
3117 struct lu_device *d)
3119 struct ofd_device *m = ofd_dev(d);
3121 dt_device_fini(&m->ofd_dt_dev);
3127 * Implementation of lu_device_type_operations::ldto_device_alloc.
3129 * This function allocates the new OFD device. It is called from
3130 * obd_setup() if OBD device had lu_device_type defined.
3132 * \param[in] env execution environment
3133 * \param[in] t lu_device_type of OFD device
3134 * \param[in] cfg configuration log
3136 * \retval pointer to the lu_device of just allocated OFD
3137 * \retval ERR_PTR of return value on error
3139 static struct lu_device *ofd_device_alloc(const struct lu_env *env,
3140 struct lu_device_type *t,
3141 struct lustre_cfg *cfg)
3143 struct ofd_device *m;
3144 struct lu_device *l;
3149 return ERR_PTR(-ENOMEM);
3151 l = &m->ofd_dt_dev.dd_lu_dev;
3152 dt_device_init(&m->ofd_dt_dev, t);
3153 rc = ofd_init0(env, m, t, cfg);
3155 ofd_device_free(env, l);
3162 /* type constructor/destructor: ofd_type_init(), ofd_type_fini() */
3163 LU_TYPE_INIT_FINI(ofd, &ofd_thread_key);
3165 static struct lu_device_type_operations ofd_device_type_ops = {
3166 .ldto_init = ofd_type_init,
3167 .ldto_fini = ofd_type_fini,
3169 .ldto_start = ofd_type_start,
3170 .ldto_stop = ofd_type_stop,
3172 .ldto_device_alloc = ofd_device_alloc,
3173 .ldto_device_free = ofd_device_free,
3174 .ldto_device_fini = ofd_device_fini
3177 static struct lu_device_type ofd_device_type = {
3178 .ldt_tags = LU_DEVICE_DT,
3179 .ldt_name = LUSTRE_OST_NAME,
3180 .ldt_ops = &ofd_device_type_ops,
3181 .ldt_ctx_tags = LCT_DT_THREAD
3185 * Initialize OFD module.
3187 * This function is called upon module loading. It registers OFD device type
3188 * and prepares all in-memory structures used by all OFD devices.
3190 * \retval 0 if successful
3191 * \retval negative value on error
3193 static int __init ofd_init(void)
3197 rc = lu_kmem_init(ofd_caches);
3201 rc = ofd_fmd_init();
3203 lu_kmem_fini(ofd_caches);
3207 rc = class_register_type(&ofd_obd_ops, NULL, true, NULL,
3208 LUSTRE_OST_NAME, &ofd_device_type);
3215 * This function is called upon OFD module unloading.
3216 * It frees all related structures and unregisters OFD device type.
3218 static void __exit ofd_exit(void)
3221 lu_kmem_fini(ofd_caches);
3222 class_unregister_type(LUSTRE_OST_NAME);
3225 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
3226 MODULE_DESCRIPTION("Lustre Object Filtering Device");
3227 MODULE_VERSION(LUSTRE_VERSION_STRING);
3228 MODULE_LICENSE("GPL");
3230 module_init(ofd_init);
3231 module_exit(ofd_exit);