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) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
32 #define DEBUG_SUBSYSTEM S_LMV
34 #include <linux/file.h>
35 #include <linux/module.h>
36 #include <linux/init.h>
37 #include <linux/user_namespace.h>
38 #include <linux/uidgid.h>
39 #include <linux/slab.h>
40 #include <linux/pagemap.h>
42 #include <linux/math64.h>
43 #include <linux/seq_file.h>
44 #include <linux/namei.h>
46 #include <obd_support.h>
47 #include <lustre_lib.h>
48 #include <lustre_net.h>
49 #include <obd_class.h>
50 #include <lustre_lmv.h>
51 #include <lprocfs_status.h>
52 #include <cl_object.h>
53 #include <lustre_fid.h>
54 #include <uapi/linux/lustre/lustre_ioctl.h>
55 #include <lustre_kernelcomm.h>
56 #include "lmv_internal.h"
58 static int lmv_check_connect(struct obd_device *obd);
59 static inline bool lmv_op_default_rr_mkdir(const struct md_op_data *op_data);
61 void lmv_activate_target(struct lmv_obd *lmv, struct lmv_tgt_desc *tgt,
64 if (tgt->ltd_active == activate)
67 tgt->ltd_active = activate;
68 lmv->lmv_mdt_descs.ltd_lmv_desc.ld_active_tgt_count +=
71 tgt->ltd_exp->exp_obd->obd_inactive = !activate;
77 * -EINVAL : UUID can't be found in the LMV's target list
78 * -ENOTCONN: The UUID is found, but the target connection is bad (!)
79 * -EBADF : The UUID is found, but the OBD of the wrong type (!)
81 static int lmv_set_mdc_active(struct lmv_obd *lmv,
82 const struct obd_uuid *uuid,
85 struct lu_tgt_desc *tgt = NULL;
86 struct obd_device *obd;
91 CDEBUG(D_INFO, "Searching in lmv %p for uuid %s (activate=%d)\n",
92 lmv, uuid->uuid, activate);
94 spin_lock(&lmv->lmv_lock);
95 lmv_foreach_connected_tgt(lmv, tgt) {
96 CDEBUG(D_INFO, "Target idx %d is %s conn %#llx\n",
97 tgt->ltd_index, tgt->ltd_uuid.uuid,
98 tgt->ltd_exp->exp_handle.h_cookie);
100 if (obd_uuid_equals(uuid, &tgt->ltd_uuid))
105 GOTO(out_lmv_lock, rc = -EINVAL);
107 obd = class_exp2obd(tgt->ltd_exp);
109 GOTO(out_lmv_lock, rc = -ENOTCONN);
111 CDEBUG(D_INFO, "Found OBD %s=%s device %d (%p) type %s at LMV idx %d\n",
112 obd->obd_name, obd->obd_uuid.uuid, obd->obd_minor, obd,
113 obd->obd_type->typ_name, tgt->ltd_index);
114 LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) == 0);
116 if (tgt->ltd_active == activate) {
117 CDEBUG(D_INFO, "OBD %p already %sactive!\n", obd,
118 activate ? "" : "in");
119 GOTO(out_lmv_lock, rc);
122 CDEBUG(D_INFO, "Marking OBD %p %sactive\n", obd,
123 activate ? "" : "in");
124 lmv_activate_target(lmv, tgt, activate);
128 spin_unlock(&lmv->lmv_lock);
132 static struct obd_uuid *lmv_get_uuid(struct obd_export *exp)
134 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
135 struct lmv_tgt_desc *tgt = lmv_tgt(lmv, 0);
137 return tgt ? obd_get_uuid(tgt->ltd_exp) : NULL;
140 static int lmv_notify(struct obd_device *obd, struct obd_device *watched,
141 enum obd_notify_event ev)
143 struct obd_connect_data *conn_data;
144 struct lmv_obd *lmv = &obd->u.lmv;
145 struct obd_uuid *uuid;
149 if (strcmp(watched->obd_type->typ_name, LUSTRE_MDC_NAME)) {
150 CERROR("unexpected notification of %s %s!\n",
151 watched->obd_type->typ_name,
156 uuid = &watched->u.cli.cl_target_uuid;
157 if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE) {
159 * Set MDC as active before notifying the observer, so the
160 * observer can use the MDC normally.
162 rc = lmv_set_mdc_active(lmv, uuid,
163 ev == OBD_NOTIFY_ACTIVE);
165 CERROR("%sactivation of %s failed: %d\n",
166 ev == OBD_NOTIFY_ACTIVE ? "" : "de",
170 } else if (ev == OBD_NOTIFY_OCD) {
171 conn_data = &watched->u.cli.cl_import->imp_connect_data;
173 * XXX: Make sure that ocd_connect_flags from all targets are
174 * the same. Otherwise one of MDTs runs wrong version or
175 * something like this. --umka
177 obd->obd_self_export->exp_connect_data = *conn_data;
181 * Pass the notification up the chain.
183 if (obd->obd_observer)
184 rc = obd_notify(obd->obd_observer, watched, ev);
189 static int lmv_connect(const struct lu_env *env,
190 struct obd_export **pexp, struct obd_device *obd,
191 struct obd_uuid *cluuid, struct obd_connect_data *data,
194 struct lmv_obd *lmv = &obd->u.lmv;
195 struct lustre_handle conn = { 0 };
196 struct obd_export *exp;
200 rc = class_connect(&conn, obd, cluuid);
202 CERROR("class_connection() returned %d\n", rc);
206 exp = class_conn2export(&conn);
209 lmv->conn_data = *data;
210 lmv->lmv_cache = localdata;
212 lmv->lmv_tgts_kobj = kobject_create_and_add("target_obds",
213 &obd->obd_kset.kobj);
214 if (!lmv->lmv_tgts_kobj) {
215 CERROR("%s: cannot create /sys/fs/lustre/%s/%s/target_obds\n",
216 obd->obd_name, obd->obd_type->typ_name, obd->obd_name);
219 rc = lmv_check_connect(obd);
228 if (lmv->lmv_tgts_kobj)
229 kobject_put(lmv->lmv_tgts_kobj);
231 class_disconnect(exp);
236 static int lmv_init_ea_size(struct obd_export *exp, __u32 easize,
239 struct obd_device *obd = exp->exp_obd;
240 struct lmv_obd *lmv = &obd->u.lmv;
241 struct lmv_tgt_desc *tgt;
247 if (lmv->max_easize < easize) {
248 lmv->max_easize = easize;
251 if (lmv->max_def_easize < def_easize) {
252 lmv->max_def_easize = def_easize;
259 if (lmv->connected == 0)
262 lmv_foreach_connected_tgt(lmv, tgt) {
263 if (!tgt->ltd_active)
266 rc = md_init_ea_size(tgt->ltd_exp, easize, def_easize);
268 CERROR("%s: obd_init_ea_size() failed on MDT target %d:"
269 " rc = %d\n", obd->obd_name, tgt->ltd_index, rc);
276 #define MAX_STRING_SIZE 128
278 static int lmv_connect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
280 struct lmv_obd *lmv = &obd->u.lmv;
281 struct obd_device *mdc_obd;
282 struct obd_export *mdc_exp;
283 struct lu_fld_target target;
287 mdc_obd = class_find_client_obd(&tgt->ltd_uuid, LUSTRE_MDC_NAME,
290 CERROR("target %s not attached\n", tgt->ltd_uuid.uuid);
294 CDEBUG(D_CONFIG, "connect to %s(%s) - %s, %s\n",
295 mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
296 tgt->ltd_uuid.uuid, obd->obd_uuid.uuid);
298 if (!mdc_obd->obd_set_up) {
299 CERROR("target %s is not set up\n", tgt->ltd_uuid.uuid);
303 rc = obd_connect(NULL, &mdc_exp, mdc_obd, &obd->obd_uuid,
304 &lmv->conn_data, lmv->lmv_cache);
306 CERROR("target %s connect error %d\n", tgt->ltd_uuid.uuid, rc);
311 * Init fid sequence client for this mdc and add new fld target.
313 rc = obd_fid_init(mdc_obd, mdc_exp, LUSTRE_SEQ_METADATA);
317 target.ft_srv = NULL;
318 target.ft_exp = mdc_exp;
319 target.ft_idx = tgt->ltd_index;
321 fld_client_add_target(&lmv->lmv_fld, &target);
323 rc = obd_register_observer(mdc_obd, obd);
325 obd_disconnect(mdc_exp);
326 CERROR("target %s register_observer error %d\n",
327 tgt->ltd_uuid.uuid, rc);
331 if (obd->obd_observer) {
333 * Tell the observer about the new target.
335 rc = obd_notify(obd->obd_observer, mdc_exp->exp_obd,
338 obd_disconnect(mdc_exp);
344 tgt->ltd_exp = mdc_exp;
345 lmv->lmv_mdt_descs.ltd_lmv_desc.ld_active_tgt_count++;
347 md_init_ea_size(tgt->ltd_exp, lmv->max_easize, lmv->max_def_easize);
349 rc = lu_qos_add_tgt(&lmv->lmv_qos, tgt);
351 obd_disconnect(mdc_exp);
355 CDEBUG(D_CONFIG, "Connected to %s(%s) successfully (%d)\n",
356 mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
357 atomic_read(&obd->obd_refcount));
359 lmv_statfs_check_update(obd, tgt);
361 if (lmv->lmv_tgts_kobj)
362 /* Even if we failed to create the link, that's fine */
363 rc = sysfs_create_link(lmv->lmv_tgts_kobj,
364 &mdc_obd->obd_kset.kobj,
369 static void lmv_del_target(struct lmv_obd *lmv, struct lu_tgt_desc *tgt)
372 ltd_del_tgt(&lmv->lmv_mdt_descs, tgt);
376 static int lmv_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
377 __u32 index, int gen)
379 struct obd_device *mdc_obd;
380 struct lmv_obd *lmv = &obd->u.lmv;
381 struct lmv_tgt_desc *tgt;
382 struct lu_tgt_descs *ltd = &lmv->lmv_mdt_descs;
387 CDEBUG(D_CONFIG, "Target uuid: %s. index %d\n", uuidp->uuid, index);
388 mdc_obd = class_find_client_obd(uuidp, LUSTRE_MDC_NAME,
391 CERROR("%s: Target %s not attached: rc = %d\n",
392 obd->obd_name, uuidp->uuid, -EINVAL);
400 mutex_init(&tgt->ltd_fid_mutex);
401 tgt->ltd_index = index;
402 tgt->ltd_uuid = *uuidp;
405 mutex_lock(<d->ltd_mutex);
406 rc = ltd_add_tgt(ltd, tgt);
407 mutex_unlock(<d->ltd_mutex);
413 /* lmv_check_connect() will connect this target. */
416 rc = lmv_connect_mdc(obd, tgt);
418 int easize = sizeof(struct lmv_stripe_md) +
419 lmv->lmv_mdt_count * sizeof(struct lu_fid);
421 lmv_init_ea_size(obd->obd_self_export, easize, 0);
431 static int lmv_check_connect(struct obd_device *obd)
433 struct lmv_obd *lmv = &obd->u.lmv;
434 struct lmv_tgt_desc *tgt;
443 mutex_lock(&lmv->lmv_mdt_descs.ltd_mutex);
445 GOTO(unlock, rc = 0);
447 if (!lmv->lmv_mdt_count) {
448 CERROR("%s: no targets configured: rc = -EINVAL\n",
450 GOTO(unlock, rc = -EINVAL);
453 if (!lmv_mdt0_inited(lmv)) {
454 CERROR("%s: no target configured for index 0: rc = -EINVAL.\n",
456 GOTO(unlock, rc = -EINVAL);
459 CDEBUG(D_CONFIG, "Time to connect %s to %s\n",
460 obd->obd_uuid.uuid, obd->obd_name);
462 lmv_foreach_tgt(lmv, tgt) {
463 rc = lmv_connect_mdc(obd, tgt);
469 easize = lmv_mds_md_size(lmv->lmv_mdt_count, LMV_MAGIC);
470 lmv_init_ea_size(obd->obd_self_export, easize, 0);
473 mutex_unlock(&lmv->lmv_mdt_descs.ltd_mutex);
478 lmv_foreach_tgt(lmv, tgt) {
483 --lmv->lmv_mdt_descs.ltd_lmv_desc.ld_active_tgt_count;
484 obd_disconnect(tgt->ltd_exp);
490 static int lmv_disconnect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
492 struct lmv_obd *lmv = &obd->u.lmv;
493 struct obd_device *mdc_obd;
497 LASSERT(tgt != NULL);
498 LASSERT(obd != NULL);
500 mdc_obd = class_exp2obd(tgt->ltd_exp);
503 mdc_obd->obd_force = obd->obd_force;
504 mdc_obd->obd_fail = obd->obd_fail;
505 mdc_obd->obd_no_recov = obd->obd_no_recov;
507 if (lmv->lmv_tgts_kobj)
508 sysfs_remove_link(lmv->lmv_tgts_kobj,
512 rc = obd_fid_fini(tgt->ltd_exp->exp_obd);
514 CERROR("Can't finalize fids factory\n");
516 CDEBUG(D_INFO, "Disconnected from %s(%s) successfully\n",
517 tgt->ltd_exp->exp_obd->obd_name,
518 tgt->ltd_exp->exp_obd->obd_uuid.uuid);
520 obd_register_observer(tgt->ltd_exp->exp_obd, NULL);
521 rc = obd_disconnect(tgt->ltd_exp);
523 if (tgt->ltd_active) {
524 CERROR("Target %s disconnect error %d\n",
525 tgt->ltd_uuid.uuid, rc);
529 lmv_activate_target(lmv, tgt, 0);
534 static int lmv_disconnect(struct obd_export *exp)
536 struct obd_device *obd = class_exp2obd(exp);
537 struct lmv_obd *lmv = &obd->u.lmv;
538 struct lmv_tgt_desc *tgt;
543 lmv_foreach_connected_tgt(lmv, tgt)
544 lmv_disconnect_mdc(obd, tgt);
546 if (lmv->lmv_tgts_kobj)
547 kobject_put(lmv->lmv_tgts_kobj);
550 rc = class_disconnect(exp);
555 static int lmv_fid2path(struct obd_export *exp, int len, void *karg,
558 struct obd_device *obd = class_exp2obd(exp);
559 struct lmv_obd *lmv = &obd->u.lmv;
560 struct getinfo_fid2path *gf;
561 struct lmv_tgt_desc *tgt;
562 struct getinfo_fid2path *remote_gf = NULL;
563 struct lu_fid root_fid;
564 int remote_gf_size = 0;
568 tgt = lmv_fid2tgt(lmv, &gf->gf_fid);
570 RETURN(PTR_ERR(tgt));
572 root_fid = *gf->gf_u.gf_root_fid;
573 LASSERT(fid_is_sane(&root_fid));
576 rc = obd_iocontrol(OBD_IOC_FID2PATH, tgt->ltd_exp, len, gf, uarg);
577 if (rc != 0 && rc != -EREMOTE)
578 GOTO(out_fid2path, rc);
580 /* If remote_gf != NULL, it means just building the
581 * path on the remote MDT, copy this path segement to gf */
582 if (remote_gf != NULL) {
583 struct getinfo_fid2path *ori_gf;
587 ori_gf = (struct getinfo_fid2path *)karg;
588 if (strlen(ori_gf->gf_u.gf_path) + 1 +
589 strlen(gf->gf_u.gf_path) + 1 > ori_gf->gf_pathlen)
590 GOTO(out_fid2path, rc = -EOVERFLOW);
592 ptr = ori_gf->gf_u.gf_path;
594 len = strlen(gf->gf_u.gf_path);
595 /* move the current path to the right to release space
596 * for closer-to-root part */
597 memmove(ptr + len + 1, ptr, strlen(ori_gf->gf_u.gf_path));
598 memcpy(ptr, gf->gf_u.gf_path, len);
602 CDEBUG(D_INFO, "%s: get path %s "DFID" rec: %llu ln: %u\n",
603 tgt->ltd_exp->exp_obd->obd_name,
604 gf->gf_u.gf_path, PFID(&gf->gf_fid), gf->gf_recno,
608 GOTO(out_fid2path, rc);
610 /* sigh, has to go to another MDT to do path building further */
611 if (remote_gf == NULL) {
612 remote_gf_size = sizeof(*remote_gf) + PATH_MAX;
613 OBD_ALLOC(remote_gf, remote_gf_size);
614 if (remote_gf == NULL)
615 GOTO(out_fid2path, rc = -ENOMEM);
616 remote_gf->gf_pathlen = PATH_MAX;
619 if (!fid_is_sane(&gf->gf_fid)) {
620 CERROR("%s: invalid FID "DFID": rc = %d\n",
621 tgt->ltd_exp->exp_obd->obd_name,
622 PFID(&gf->gf_fid), -EINVAL);
623 GOTO(out_fid2path, rc = -EINVAL);
626 tgt = lmv_fid2tgt(lmv, &gf->gf_fid);
628 GOTO(out_fid2path, rc = -EINVAL);
630 remote_gf->gf_fid = gf->gf_fid;
631 remote_gf->gf_recno = -1;
632 remote_gf->gf_linkno = -1;
633 memset(remote_gf->gf_u.gf_path, 0, remote_gf->gf_pathlen);
634 *remote_gf->gf_u.gf_root_fid = root_fid;
636 goto repeat_fid2path;
639 if (remote_gf != NULL)
640 OBD_FREE(remote_gf, remote_gf_size);
644 static int lmv_hsm_req_count(struct lmv_obd *lmv,
645 const struct hsm_user_request *hur,
646 const struct lmv_tgt_desc *tgt_mds)
648 struct lmv_tgt_desc *curr_tgt;
652 /* count how many requests must be sent to the given target */
653 for (i = 0; i < hur->hur_request.hr_itemcount; i++) {
654 curr_tgt = lmv_fid2tgt(lmv, &hur->hur_user_item[i].hui_fid);
655 if (IS_ERR(curr_tgt))
656 RETURN(PTR_ERR(curr_tgt));
657 if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid))
663 static int lmv_hsm_req_build(struct lmv_obd *lmv,
664 struct hsm_user_request *hur_in,
665 const struct lmv_tgt_desc *tgt_mds,
666 struct hsm_user_request *hur_out)
669 struct lmv_tgt_desc *curr_tgt;
671 /* build the hsm_user_request for the given target */
672 hur_out->hur_request = hur_in->hur_request;
674 for (i = 0; i < hur_in->hur_request.hr_itemcount; i++) {
675 curr_tgt = lmv_fid2tgt(lmv, &hur_in->hur_user_item[i].hui_fid);
676 if (IS_ERR(curr_tgt))
677 RETURN(PTR_ERR(curr_tgt));
678 if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid)) {
679 hur_out->hur_user_item[nr_out] =
680 hur_in->hur_user_item[i];
684 hur_out->hur_request.hr_itemcount = nr_out;
685 memcpy(hur_data(hur_out), hur_data(hur_in),
686 hur_in->hur_request.hr_data_len);
691 static int lmv_hsm_ct_unregister(struct obd_device *obd, unsigned int cmd,
692 int len, struct lustre_kernelcomm *lk,
695 struct lmv_obd *lmv = &obd->u.lmv;
696 struct lu_tgt_desc *tgt;
701 /* unregister request (call from llapi_hsm_copytool_fini) */
702 lmv_foreach_connected_tgt(lmv, tgt)
703 /* best effort: try to clean as much as possible
704 * (continue on error) */
705 obd_iocontrol(cmd, tgt->ltd_exp, len, lk, uarg);
707 /* Whatever the result, remove copytool from kuc groups.
708 * Unreached coordinators will get EPIPE on next requests
709 * and will unregister automatically.
711 rc = libcfs_kkuc_group_rem(&obd->obd_uuid, lk->lk_uid, lk->lk_group);
716 static int lmv_hsm_ct_register(struct obd_device *obd, unsigned int cmd,
717 int len, struct lustre_kernelcomm *lk,
720 struct lmv_obd *lmv = &obd->u.lmv;
722 bool any_set = false;
723 struct kkuc_ct_data *kcd;
725 struct lu_tgt_desc *tgt;
732 filp = fget(lk->lk_wfd);
736 if (lk->lk_flags & LK_FLG_DATANR)
737 kcd_size = offsetof(struct kkuc_ct_data,
738 kcd_archives[lk->lk_data_count]);
740 kcd_size = sizeof(*kcd);
742 OBD_ALLOC(kcd, kcd_size);
744 GOTO(err_fput, rc = -ENOMEM);
746 kcd->kcd_nr_archives = lk->lk_data_count;
747 if (lk->lk_flags & LK_FLG_DATANR) {
748 kcd->kcd_magic = KKUC_CT_DATA_ARRAY_MAGIC;
749 if (lk->lk_data_count > 0)
750 memcpy(kcd->kcd_archives, lk->lk_data,
751 sizeof(*kcd->kcd_archives) * lk->lk_data_count);
753 kcd->kcd_magic = KKUC_CT_DATA_BITMAP_MAGIC;
756 rc = libcfs_kkuc_group_add(filp, &obd->obd_uuid, lk->lk_uid,
757 lk->lk_group, kcd, kcd_size);
758 OBD_FREE(kcd, kcd_size);
762 /* All or nothing: try to register to all MDS.
763 * In case of failure, unregister from previous MDS,
764 * except if it because of inactive target. */
765 lmv_foreach_connected_tgt(lmv, tgt) {
766 err = obd_iocontrol(cmd, tgt->ltd_exp, len, lk, uarg);
768 if (tgt->ltd_active) {
769 /* permanent error */
770 CERROR("%s: iocontrol MDC %s on MDT"
771 " idx %d cmd %x: err = %d\n",
772 lmv2obd_dev(lmv)->obd_name,
773 tgt->ltd_uuid.uuid, tgt->ltd_index, cmd,
776 lk->lk_flags |= LK_FLG_STOP;
778 /* unregister from previous MDS */
779 lmv_foreach_connected_tgt(lmv, tgt) {
780 if (tgt->ltd_index >= i)
783 obd_iocontrol(cmd, tgt->ltd_exp, len,
786 GOTO(err_kkuc_rem, rc);
788 /* else: transient error.
789 * kuc will register to the missing MDT
797 /* no registration done: return error */
798 GOTO(err_kkuc_rem, rc = -ENOTCONN);
803 libcfs_kkuc_group_rem(&obd->obd_uuid, lk->lk_uid, lk->lk_group);
810 static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp,
811 int len, void *karg, void __user *uarg)
813 struct obd_device *obd = class_exp2obd(exp);
814 struct lmv_obd *lmv = &obd->u.lmv;
815 struct lu_tgt_desc *tgt = NULL;
817 __u32 count = lmv->lmv_mdt_count;
826 case IOC_OBD_STATFS: {
827 struct obd_ioctl_data *data = karg;
828 struct obd_device *mdc_obd;
829 struct obd_statfs stat_buf = {0};
832 memcpy(&index, data->ioc_inlbuf2, sizeof(__u32));
834 if (index >= lmv->lmv_mdt_descs.ltd_tgts_size)
837 tgt = lmv_tgt(lmv, index);
841 if (!tgt->ltd_active)
844 mdc_obd = class_exp2obd(tgt->ltd_exp);
849 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(mdc_obd),
850 min((int) data->ioc_plen2,
851 (int) sizeof(struct obd_uuid))))
854 rc = obd_statfs(NULL, tgt->ltd_exp, &stat_buf,
855 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
859 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
860 min((int) data->ioc_plen1,
861 (int) sizeof(stat_buf))))
865 case OBD_IOC_QUOTACTL: {
866 struct if_quotactl *qctl = karg;
867 struct obd_quotactl *oqctl;
868 struct obd_import *imp;
870 if (qctl->qc_valid == QC_MDTIDX) {
871 tgt = lmv_tgt(lmv, qctl->qc_idx);
872 } else if (qctl->qc_valid == QC_UUID) {
873 lmv_foreach_tgt(lmv, tgt) {
874 if (!obd_uuid_equals(&tgt->ltd_uuid,
893 imp = class_exp2cliimp(tgt->ltd_exp);
894 if (!tgt->ltd_active && imp->imp_state != LUSTRE_IMP_IDLE) {
895 qctl->qc_valid = QC_MDTIDX;
896 qctl->obd_uuid = tgt->ltd_uuid;
900 OBD_ALLOC_PTR(oqctl);
904 QCTL_COPY(oqctl, qctl);
905 rc = obd_quotactl(tgt->ltd_exp, oqctl);
907 QCTL_COPY(qctl, oqctl);
908 qctl->qc_valid = QC_MDTIDX;
909 qctl->obd_uuid = tgt->ltd_uuid;
914 case LL_IOC_GET_CONNECT_FLAGS: {
915 tgt = lmv_tgt(lmv, 0);
917 if (tgt && tgt->ltd_exp)
918 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
921 case LL_IOC_FID2MDTIDX: {
922 struct lu_fid *fid = karg;
925 rc = lmv_fld_lookup(lmv, fid, &mdt_index);
929 /* Note: this is from llite(see ll_dir_ioctl()), @uarg does not
930 * point to user space memory for FID2MDTIDX. */
931 *(__u32 *)uarg = mdt_index;
934 case OBD_IOC_FID2PATH: {
935 rc = lmv_fid2path(exp, len, karg, uarg);
938 case LL_IOC_HSM_STATE_GET:
939 case LL_IOC_HSM_STATE_SET:
940 case LL_IOC_HSM_ACTION: {
941 struct md_op_data *op_data = karg;
943 tgt = lmv_fid2tgt(lmv, &op_data->op_fid1);
945 RETURN(PTR_ERR(tgt));
947 if (tgt->ltd_exp == NULL)
950 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
953 case LL_IOC_HSM_PROGRESS: {
954 const struct hsm_progress_kernel *hpk = karg;
956 tgt = lmv_fid2tgt(lmv, &hpk->hpk_fid);
958 RETURN(PTR_ERR(tgt));
959 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
962 case LL_IOC_HSM_REQUEST: {
963 struct hsm_user_request *hur = karg;
964 unsigned int reqcount = hur->hur_request.hr_itemcount;
969 /* if the request is about a single fid
970 * or if there is a single MDS, no need to split
972 if (reqcount == 1 || count == 1) {
973 tgt = lmv_fid2tgt(lmv, &hur->hur_user_item[0].hui_fid);
975 RETURN(PTR_ERR(tgt));
976 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
978 /* split fid list to their respective MDS */
979 lmv_foreach_connected_tgt(lmv, tgt) {
982 struct hsm_user_request *req;
984 nr = lmv_hsm_req_count(lmv, hur, tgt);
987 if (nr == 0) /* nothing for this MDS */
990 /* build a request with fids for this MDS */
991 reqlen = offsetof(typeof(*hur),
993 + hur->hur_request.hr_data_len;
994 OBD_ALLOC_LARGE(req, reqlen);
997 rc1 = lmv_hsm_req_build(lmv, hur, tgt, req);
999 GOTO(hsm_req_err, rc1);
1000 rc1 = obd_iocontrol(cmd, tgt->ltd_exp, reqlen,
1003 if (rc1 != 0 && rc == 0)
1005 OBD_FREE_LARGE(req, reqlen);
1010 case LL_IOC_LOV_SWAP_LAYOUTS: {
1011 struct md_op_data *op_data = karg;
1012 struct lmv_tgt_desc *tgt1, *tgt2;
1014 tgt1 = lmv_fid2tgt(lmv, &op_data->op_fid1);
1016 RETURN(PTR_ERR(tgt1));
1018 tgt2 = lmv_fid2tgt(lmv, &op_data->op_fid2);
1020 RETURN(PTR_ERR(tgt2));
1022 if ((tgt1->ltd_exp == NULL) || (tgt2->ltd_exp == NULL))
1025 /* only files on same MDT can have their layouts swapped */
1026 if (tgt1->ltd_index != tgt2->ltd_index)
1029 rc = obd_iocontrol(cmd, tgt1->ltd_exp, len, karg, uarg);
1032 case LL_IOC_HSM_CT_START: {
1033 struct lustre_kernelcomm *lk = karg;
1034 if (lk->lk_flags & LK_FLG_STOP)
1035 rc = lmv_hsm_ct_unregister(obd, cmd, len, lk, uarg);
1037 rc = lmv_hsm_ct_register(obd, cmd, len, lk, uarg);
1041 lmv_foreach_connected_tgt(lmv, tgt) {
1042 struct obd_device *mdc_obd;
1045 /* ll_umount_begin() sets force flag but for lmv, not
1046 * mdc. Let's pass it through */
1047 mdc_obd = class_exp2obd(tgt->ltd_exp);
1048 mdc_obd->obd_force = obd->obd_force;
1049 err = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1051 if (tgt->ltd_active) {
1052 CERROR("error: iocontrol MDC %s on MDT"
1053 " idx %d cmd %x: err = %d\n",
1055 tgt->ltd_index, cmd, err);
1068 int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp,
1069 struct lu_fid *fid, struct md_op_data *op_data)
1071 struct obd_device *obd = class_exp2obd(exp);
1072 struct lmv_obd *lmv = &obd->u.lmv;
1073 struct lmv_tgt_desc *tgt;
1081 tgt = lmv_tgt(lmv, op_data->op_mds);
1085 if (!tgt->ltd_active || !tgt->ltd_exp)
1089 * New seq alloc and FLD setup should be atomic. Otherwise we may find
1090 * on server that seq in new allocated fid is not yet known.
1092 mutex_lock(&tgt->ltd_fid_mutex);
1093 rc = obd_fid_alloc(NULL, tgt->ltd_exp, fid, NULL);
1094 mutex_unlock(&tgt->ltd_fid_mutex);
1096 LASSERT(fid_is_sane(fid));
1103 static int lmv_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
1105 struct lmv_obd *lmv = &obd->u.lmv;
1106 struct lmv_desc *desc;
1107 struct lnet_processid lnet_id;
1113 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
1114 CERROR("LMV setup requires a descriptor\n");
1118 desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1);
1119 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
1120 CERROR("Lmv descriptor size wrong: %d > %d\n",
1121 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
1125 obd_str2uuid(&lmv->lmv_mdt_descs.ltd_lmv_desc.ld_uuid,
1126 desc->ld_uuid.uuid);
1127 lmv->lmv_mdt_descs.ltd_lmv_desc.ld_tgt_count = 0;
1128 lmv->lmv_mdt_descs.ltd_lmv_desc.ld_active_tgt_count = 0;
1129 lmv->lmv_mdt_descs.ltd_lmv_desc.ld_qos_maxage =
1130 LMV_DESC_QOS_MAXAGE_DEFAULT;
1131 lmv->max_def_easize = 0;
1132 lmv->max_easize = 0;
1134 spin_lock_init(&lmv->lmv_lock);
1137 * initialize rr_index to lower 32bit of netid, so that client
1138 * can distribute subdirs evenly from the beginning.
1140 while (LNetGetId(i++, &lnet_id) != -ENOENT) {
1141 if (!nid_is_lo0(&lnet_id.nid)) {
1142 lmv->lmv_qos_rr_index = ntohl(lnet_id.nid.nid_addr[0]);
1147 rc = lmv_tunables_init(obd);
1149 CWARN("%s: error adding LMV sysfs/debugfs files: rc = %d\n",
1152 rc = fld_client_init(&lmv->lmv_fld, obd->obd_name,
1153 LUSTRE_CLI_FLD_HASH_DHT);
1155 CERROR("Can't init FLD, err %d\n", rc);
1157 rc = lu_tgt_descs_init(&lmv->lmv_mdt_descs, true);
1159 CWARN("%s: error initialize target table: rc = %d\n",
1165 static int lmv_cleanup(struct obd_device *obd)
1167 struct lmv_obd *lmv = &obd->u.lmv;
1168 struct lu_tgt_desc *tgt;
1169 struct lu_tgt_desc *tmp;
1173 fld_client_fini(&lmv->lmv_fld);
1174 fld_client_debugfs_fini(&lmv->lmv_fld);
1176 lprocfs_obd_cleanup(obd);
1177 lprocfs_free_md_stats(obd);
1179 lmv_foreach_tgt_safe(lmv, tgt, tmp)
1180 lmv_del_target(lmv, tgt);
1181 lu_tgt_descs_fini(&lmv->lmv_mdt_descs);
1186 static int lmv_process_config(struct obd_device *obd, size_t len, void *buf)
1188 struct lustre_cfg *lcfg = buf;
1189 struct obd_uuid obd_uuid;
1195 switch (lcfg->lcfg_command) {
1197 /* modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDT0000_UUID
1198 * 2:0 3:1 4:lustre-MDT0000-mdc_UUID */
1199 if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid))
1200 GOTO(out, rc = -EINVAL);
1202 obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1));
1204 if (sscanf(lustre_cfg_buf(lcfg, 2), "%u", &index) != 1)
1205 GOTO(out, rc = -EINVAL);
1206 if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", &gen) != 1)
1207 GOTO(out, rc = -EINVAL);
1208 rc = lmv_add_target(obd, &obd_uuid, index, gen);
1211 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1212 GOTO(out, rc = -EINVAL);
1218 static int lmv_select_statfs_mdt(struct lmv_obd *lmv, __u32 flags)
1222 if (flags & OBD_STATFS_FOR_MDT0)
1225 if (lmv->lmv_statfs_start || lmv->lmv_mdt_count == 1)
1226 return lmv->lmv_statfs_start;
1228 /* choose initial MDT for this client */
1230 struct lnet_processid lnet_id;
1231 if (LNetGetId(i, &lnet_id) == -ENOENT)
1234 if (!nid_is_lo0(&lnet_id.nid)) {
1235 /* We dont need a full 64-bit modulus, just enough
1236 * to distribute the requests across MDTs evenly.
1238 lmv->lmv_statfs_start = nidhash(&lnet_id.nid) %
1244 return lmv->lmv_statfs_start;
1247 static int lmv_statfs(const struct lu_env *env, struct obd_export *exp,
1248 struct obd_statfs *osfs, time64_t max_age, __u32 flags)
1250 struct obd_device *obd = class_exp2obd(exp);
1251 struct lmv_obd *lmv = &obd->u.lmv;
1252 struct obd_statfs *temp;
1253 struct lu_tgt_desc *tgt;
1261 OBD_ALLOC(temp, sizeof(*temp));
1265 /* distribute statfs among MDTs */
1266 idx = lmv_select_statfs_mdt(lmv, flags);
1268 for (i = 0; i < lmv->lmv_mdt_descs.ltd_tgts_size; i++, idx++) {
1269 idx = idx % lmv->lmv_mdt_descs.ltd_tgts_size;
1270 tgt = lmv_tgt(lmv, idx);
1271 if (!tgt || !tgt->ltd_exp)
1274 rc = obd_statfs(env, tgt->ltd_exp, temp, max_age,
1275 flags | OBD_STATFS_NESTED);
1277 CERROR("%s: can't stat MDS #%d: rc = %d\n",
1278 tgt->ltd_exp->exp_obd->obd_name, i, rc);
1280 /* Try another MDT */
1281 if (flags & OBD_STATFS_SUM)
1283 GOTO(out_free_temp, rc);
1286 if (temp->os_state & OS_STATFS_SUM ||
1287 flags == OBD_STATFS_FOR_MDT0) {
1288 /* reset to the last aggregated values
1289 * and don't sum with non-aggrated data */
1290 /* If the statfs is from mount, it needs to retrieve
1291 * necessary information from MDT0. i.e. mount does
1292 * not need the merged osfs from all of MDT. Also
1293 * clients can be mounted as long as MDT0 is in
1296 GOTO(out_free_temp, rc);
1302 osfs->os_bavail += temp->os_bavail;
1303 osfs->os_blocks += temp->os_blocks;
1304 osfs->os_ffree += temp->os_ffree;
1305 osfs->os_files += temp->os_files;
1306 osfs->os_granted += temp->os_granted;
1309 /* There is no stats from some MDTs, data incomplete */
1313 OBD_FREE(temp, sizeof(*temp));
1317 static int lmv_statfs_update(void *cookie, int rc)
1319 struct obd_info *oinfo = cookie;
1320 struct obd_device *obd = oinfo->oi_obd;
1321 struct lmv_obd *lmv = &obd->u.lmv;
1322 struct lmv_tgt_desc *tgt = oinfo->oi_tgt;
1323 struct obd_statfs *osfs = oinfo->oi_osfs;
1326 * NB: don't deactivate TGT upon error, because we may not trigger async
1327 * statfs any longer, then there is no chance to activate TGT.
1330 spin_lock(&lmv->lmv_lock);
1331 tgt->ltd_statfs = *osfs;
1332 tgt->ltd_statfs_age = ktime_get_seconds();
1333 spin_unlock(&lmv->lmv_lock);
1334 set_bit(LQ_DIRTY, &lmv->lmv_qos.lq_flags);
1340 /* update tgt statfs async if it's ld_qos_maxage old */
1341 int lmv_statfs_check_update(struct obd_device *obd, struct lmv_tgt_desc *tgt)
1343 struct obd_info oinfo = {
1346 .oi_cb_up = lmv_statfs_update,
1350 if (ktime_get_seconds() - tgt->ltd_statfs_age <
1351 obd->u.lmv.lmv_mdt_descs.ltd_lmv_desc.ld_qos_maxage)
1354 rc = obd_statfs_async(tgt->ltd_exp, &oinfo, 0, NULL);
1359 static int lmv_get_root(struct obd_export *exp, const char *fileset,
1362 struct obd_device *obd = exp->exp_obd;
1363 struct lmv_obd *lmv = &obd->u.lmv;
1364 struct lu_tgt_desc *tgt = lmv_tgt(lmv, 0);
1372 rc = md_get_root(tgt->ltd_exp, fileset, fid);
1376 static int lmv_getxattr(struct obd_export *exp, const struct lu_fid *fid,
1377 u64 obd_md_valid, const char *name, size_t buf_size,
1378 struct ptlrpc_request **req)
1380 struct obd_device *obd = exp->exp_obd;
1381 struct lmv_obd *lmv = &obd->u.lmv;
1382 struct lmv_tgt_desc *tgt;
1387 tgt = lmv_fid2tgt(lmv, fid);
1389 RETURN(PTR_ERR(tgt));
1391 rc = md_getxattr(tgt->ltd_exp, fid, obd_md_valid, name, buf_size, req);
1396 static int lmv_setxattr(struct obd_export *exp, const struct lu_fid *fid,
1397 u64 obd_md_valid, const char *name,
1398 const void *value, size_t value_size,
1399 unsigned int xattr_flags, u32 suppgid,
1400 struct ptlrpc_request **req)
1402 struct obd_device *obd = exp->exp_obd;
1403 struct lmv_obd *lmv = &obd->u.lmv;
1404 struct lmv_tgt_desc *tgt;
1409 tgt = lmv_fid2tgt(lmv, fid);
1411 RETURN(PTR_ERR(tgt));
1413 rc = md_setxattr(tgt->ltd_exp, fid, obd_md_valid, name,
1414 value, value_size, xattr_flags, suppgid, req);
1419 static int lmv_getattr(struct obd_export *exp, struct md_op_data *op_data,
1420 struct ptlrpc_request **request)
1422 struct obd_device *obd = exp->exp_obd;
1423 struct lmv_obd *lmv = &obd->u.lmv;
1424 struct lmv_tgt_desc *tgt;
1429 tgt = lmv_fid2tgt(lmv, &op_data->op_fid1);
1431 RETURN(PTR_ERR(tgt));
1433 if (op_data->op_flags & MF_GET_MDT_IDX) {
1434 op_data->op_mds = tgt->ltd_index;
1438 rc = md_getattr(tgt->ltd_exp, op_data, request);
1443 static int lmv_null_inode(struct obd_export *exp, const struct lu_fid *fid)
1445 struct obd_device *obd = exp->exp_obd;
1446 struct lmv_obd *lmv = &obd->u.lmv;
1447 struct lu_tgt_desc *tgt;
1451 CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid));
1454 * With DNE every object can have two locks in different namespaces:
1455 * lookup lock in space of MDT storing direntry and update/open lock in
1456 * space of MDT storing inode.
1458 lmv_foreach_connected_tgt(lmv, tgt)
1459 md_null_inode(tgt->ltd_exp, fid);
1464 static int lmv_close(struct obd_export *exp, struct md_op_data *op_data,
1465 struct md_open_data *mod, struct ptlrpc_request **request)
1467 struct obd_device *obd = exp->exp_obd;
1468 struct lmv_obd *lmv = &obd->u.lmv;
1469 struct lmv_tgt_desc *tgt;
1474 tgt = lmv_fid2tgt(lmv, &op_data->op_fid1);
1476 RETURN(PTR_ERR(tgt));
1478 CDEBUG(D_INODE, "CLOSE "DFID"\n", PFID(&op_data->op_fid1));
1479 rc = md_close(tgt->ltd_exp, op_data, mod, request);
1483 static struct lu_tgt_desc *lmv_locate_tgt_qos(struct lmv_obd *lmv,
1484 struct md_op_data *op_data)
1486 struct lu_tgt_desc *tgt, *cur = NULL;
1487 __u64 total_avail = 0;
1488 __u64 total_weight = 0;
1489 __u64 cur_weight = 0;
1490 int total_usable = 0;
1496 if (!ltd_qos_is_usable(&lmv->lmv_mdt_descs))
1497 RETURN(ERR_PTR(-EAGAIN));
1499 down_write(&lmv->lmv_qos.lq_rw_sem);
1501 if (!ltd_qos_is_usable(&lmv->lmv_mdt_descs))
1502 GOTO(unlock, tgt = ERR_PTR(-EAGAIN));
1504 rc = ltd_qos_penalties_calc(&lmv->lmv_mdt_descs);
1506 GOTO(unlock, tgt = ERR_PTR(rc));
1508 lmv_foreach_tgt(lmv, tgt) {
1509 if (!tgt->ltd_exp || !tgt->ltd_active) {
1510 tgt->ltd_qos.ltq_usable = 0;
1514 tgt->ltd_qos.ltq_usable = 1;
1515 lu_tgt_qos_weight_calc(tgt);
1516 if (tgt->ltd_index == op_data->op_mds)
1518 total_avail += tgt->ltd_qos.ltq_avail;
1519 total_weight += tgt->ltd_qos.ltq_weight;
1523 /* If current MDT has above-average space and dir is not aleady using
1524 * round-robin to spread across more MDTs, stay on the parent MDT
1525 * to avoid creating needless remote MDT directories. Remote dirs
1526 * close to the root balance space more effectively than bottom dirs,
1527 * so prefer to create remote dirs at top level of directory tree.
1528 * "16 / (dir_depth + 10)" is the factor to make it less likely
1529 * for top-level directories to stay local unless they have more than
1530 * average free space, while deep dirs prefer local until more full.
1531 * depth=0 -> 160%, depth=3 -> 123%, depth=6 -> 100%,
1532 * depth=9 -> 84%, depth=12 -> 73%, depth=15 -> 64%
1534 if (!lmv_op_default_rr_mkdir(op_data)) {
1535 rand = total_avail * 16 /
1536 (total_usable * (op_data->op_dir_depth + 10));
1537 if (cur && cur->ltd_qos.ltq_avail >= rand) {
1543 rand = lu_prandom_u64_max(total_weight);
1545 lmv_foreach_connected_tgt(lmv, tgt) {
1546 if (!tgt->ltd_qos.ltq_usable)
1549 cur_weight += tgt->ltd_qos.ltq_weight;
1550 if (cur_weight < rand)
1553 ltd_qos_update(&lmv->lmv_mdt_descs, tgt, &total_weight);
1557 /* no proper target found */
1558 GOTO(unlock, tgt = ERR_PTR(-EAGAIN));
1560 up_write(&lmv->lmv_qos.lq_rw_sem);
1565 static struct lu_tgt_desc *lmv_locate_tgt_rr(struct lmv_obd *lmv)
1567 struct lu_tgt_desc *tgt;
1573 spin_lock(&lmv->lmv_lock);
1574 for (i = 0; i < lmv->lmv_mdt_descs.ltd_tgts_size; i++) {
1575 index = (i + lmv->lmv_qos_rr_index) %
1576 lmv->lmv_mdt_descs.ltd_tgts_size;
1577 tgt = lmv_tgt(lmv, index);
1578 if (!tgt || !tgt->ltd_exp || !tgt->ltd_active)
1581 lmv->lmv_qos_rr_index = (tgt->ltd_index + 1) %
1582 lmv->lmv_mdt_descs.ltd_tgts_size;
1583 spin_unlock(&lmv->lmv_lock);
1587 spin_unlock(&lmv->lmv_lock);
1589 RETURN(ERR_PTR(-ENODEV));
1592 /* locate MDT which is less full (avoid the most full MDT) */
1593 static struct lu_tgt_desc *lmv_locate_tgt_lf(struct lmv_obd *lmv)
1595 struct lu_tgt_desc *min = NULL;
1596 struct lu_tgt_desc *tgt;
1602 if (!ltd_qos_is_usable(&lmv->lmv_mdt_descs))
1603 RETURN(ERR_PTR(-EAGAIN));
1605 down_write(&lmv->lmv_qos.lq_rw_sem);
1607 if (!ltd_qos_is_usable(&lmv->lmv_mdt_descs))
1608 GOTO(unlock, tgt = ERR_PTR(-EAGAIN));
1610 lmv_foreach_tgt(lmv, tgt) {
1611 if (!tgt->ltd_exp || !tgt->ltd_active) {
1612 tgt->ltd_qos.ltq_usable = 0;
1616 tgt->ltd_qos.ltq_usable = 1;
1617 lu_tgt_qos_weight_calc(tgt);
1618 avail += tgt->ltd_qos.ltq_avail;
1619 if (!min || min->ltd_qos.ltq_avail > tgt->ltd_qos.ltq_avail)
1623 /* avoid the most full MDT */
1625 avail -= min->ltd_qos.ltq_avail;
1627 rand = lu_prandom_u64_max(avail);
1629 lmv_foreach_connected_tgt(lmv, tgt) {
1630 if (!tgt->ltd_qos.ltq_usable)
1636 avail += tgt->ltd_qos.ltq_avail;
1643 /* no proper target found */
1644 GOTO(unlock, tgt = ERR_PTR(-EAGAIN));
1646 up_write(&lmv->lmv_qos.lq_rw_sem);
1651 /* locate MDT by file name, for striped directory, the file name hash decides
1652 * which stripe its dirent is stored.
1654 static struct lmv_tgt_desc *
1655 lmv_locate_tgt_by_name(struct lmv_obd *lmv, struct lmv_stripe_md *lsm,
1656 const char *name, int namelen, struct lu_fid *fid,
1657 __u32 *mds, bool new_layout)
1659 struct lmv_tgt_desc *tgt;
1660 const struct lmv_oinfo *oinfo;
1662 if (!lmv_dir_striped(lsm) || !namelen) {
1663 tgt = lmv_fid2tgt(lmv, fid);
1667 *mds = tgt->ltd_index;
1671 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_NAME_HASH)) {
1672 if (cfs_fail_val >= lsm->lsm_md_stripe_count)
1673 return ERR_PTR(-EBADF);
1674 oinfo = &lsm->lsm_md_oinfo[cfs_fail_val];
1676 oinfo = lsm_name_to_stripe_info(lsm, name, namelen, new_layout);
1678 return ERR_CAST(oinfo);
1681 /* check stripe FID is sane */
1682 if (!fid_is_sane(&oinfo->lmo_fid))
1683 return ERR_PTR(-ENODEV);
1685 *fid = oinfo->lmo_fid;
1686 *mds = oinfo->lmo_mds;
1687 tgt = lmv_tgt(lmv, oinfo->lmo_mds);
1689 CDEBUG(D_INODE, "locate MDT %u parent "DFID"\n", *mds, PFID(fid));
1691 return tgt ? tgt : ERR_PTR(-ENODEV);
1695 * Locate MDT of op_data->op_fid1
1697 * For striped directory, it will locate the stripe by name hash, if hash_type
1698 * is unknown, it will return the stripe specified by 'op_data->op_stripe_index'
1699 * which is set outside, and if dir is migrating, 'op_data->op_new_layout'
1700 * indicates whether old or new layout is used to locate.
1702 * For plain direcotry, it just locate the MDT of op_data->op_fid1.
1704 * \param[in] lmv LMV device
1705 * \param[in/out] op_data client MD stack parameters, name, namelen etc,
1706 * op_mds and op_fid1 will be updated if op_mea1
1707 * indicates fid1 represents a striped directory.
1709 * retval pointer to the lmv_tgt_desc if succeed.
1710 * ERR_PTR(errno) if failed.
1712 struct lmv_tgt_desc *
1713 lmv_locate_tgt(struct lmv_obd *lmv, struct md_op_data *op_data)
1715 struct lmv_stripe_md *lsm = op_data->op_mea1;
1716 struct lmv_oinfo *oinfo;
1717 struct lmv_tgt_desc *tgt;
1719 if (lmv_dir_foreign(lsm))
1720 return ERR_PTR(-ENODATA);
1722 /* During creating VOLATILE file, it should honor the mdt
1723 * index if the file under striped dir is being restored, see
1725 if (op_data->op_bias & MDS_CREATE_VOLATILE &&
1726 op_data->op_mds != LMV_OFFSET_DEFAULT) {
1727 tgt = lmv_tgt(lmv, op_data->op_mds);
1729 return ERR_PTR(-ENODEV);
1731 if (lmv_dir_striped(lsm)) {
1734 /* refill the right parent fid */
1735 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1736 oinfo = &lsm->lsm_md_oinfo[i];
1737 if (oinfo->lmo_mds == op_data->op_mds) {
1738 op_data->op_fid1 = oinfo->lmo_fid;
1743 if (i == lsm->lsm_md_stripe_count)
1744 op_data->op_fid1 = lsm->lsm_md_oinfo[0].lmo_fid;
1746 } else if (lmv_dir_bad_hash(lsm)) {
1747 LASSERT(op_data->op_stripe_index < lsm->lsm_md_stripe_count);
1748 oinfo = &lsm->lsm_md_oinfo[op_data->op_stripe_index];
1750 op_data->op_fid1 = oinfo->lmo_fid;
1751 op_data->op_mds = oinfo->lmo_mds;
1752 tgt = lmv_tgt(lmv, oinfo->lmo_mds);
1754 return ERR_PTR(-ENODEV);
1756 tgt = lmv_locate_tgt_by_name(lmv, op_data->op_mea1,
1757 op_data->op_name, op_data->op_namelen,
1758 &op_data->op_fid1, &op_data->op_mds,
1759 op_data->op_new_layout);
1765 /* Locate MDT of op_data->op_fid2 for link/rename */
1766 static struct lmv_tgt_desc *
1767 lmv_locate_tgt2(struct lmv_obd *lmv, struct md_op_data *op_data)
1769 struct lmv_tgt_desc *tgt;
1772 LASSERT(op_data->op_name);
1773 if (lmv_dir_layout_changing(op_data->op_mea2)) {
1774 struct lu_fid fid1 = op_data->op_fid1;
1775 struct lmv_stripe_md *lsm1 = op_data->op_mea1;
1776 struct ptlrpc_request *request = NULL;
1779 * avoid creating new file under old layout of migrating
1780 * directory, check it here.
1782 tgt = lmv_locate_tgt_by_name(lmv, op_data->op_mea2,
1783 op_data->op_name, op_data->op_namelen,
1784 &op_data->op_fid2, &op_data->op_mds, false);
1788 op_data->op_fid1 = op_data->op_fid2;
1789 op_data->op_mea1 = op_data->op_mea2;
1790 rc = md_getattr_name(tgt->ltd_exp, op_data, &request);
1791 op_data->op_fid1 = fid1;
1792 op_data->op_mea1 = lsm1;
1794 ptlrpc_req_finished(request);
1795 RETURN(ERR_PTR(-EEXIST));
1799 RETURN(ERR_PTR(rc));
1802 return lmv_locate_tgt_by_name(lmv, op_data->op_mea2, op_data->op_name,
1803 op_data->op_namelen, &op_data->op_fid2,
1804 &op_data->op_mds, true);
1807 int lmv_old_layout_lookup(struct lmv_obd *lmv, struct md_op_data *op_data)
1809 struct lu_tgt_desc *tgt;
1810 struct ptlrpc_request *request;
1813 LASSERT(lmv_dir_layout_changing(op_data->op_mea1));
1814 LASSERT(!op_data->op_new_layout);
1816 tgt = lmv_locate_tgt(lmv, op_data);
1818 return PTR_ERR(tgt);
1820 rc = md_getattr_name(tgt->ltd_exp, op_data, &request);
1822 ptlrpc_req_finished(request);
1829 /* mkdir by QoS upon 'lfs mkdir -i -1'.
1831 * NB, mkdir by QoS only if parent is not striped, this is to avoid remote
1832 * directories under striped directory.
1834 static inline bool lmv_op_user_qos_mkdir(const struct md_op_data *op_data)
1836 const struct lmv_user_md *lum = op_data->op_data;
1838 if (op_data->op_code != LUSTRE_OPC_MKDIR)
1841 if (lmv_dir_striped(op_data->op_mea1))
1844 return (op_data->op_cli_flags & CLI_SET_MEA) && lum &&
1845 le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC &&
1846 le32_to_cpu(lum->lum_stripe_offset) == LMV_OFFSET_DEFAULT;
1849 /* mkdir by QoS if either ROOT or parent default LMV is space balanced. */
1850 static inline bool lmv_op_default_qos_mkdir(const struct md_op_data *op_data)
1852 const struct lmv_stripe_md *lsm = op_data->op_default_mea1;
1854 if (op_data->op_code != LUSTRE_OPC_MKDIR)
1857 if (lmv_dir_striped(op_data->op_mea1))
1860 return (op_data->op_flags & MF_QOS_MKDIR) ||
1861 (lsm && lsm->lsm_md_master_mdt_index == LMV_OFFSET_DEFAULT);
1864 /* if parent default LMV is space balanced, and
1865 * 1. max_inherit_rr is set
1866 * 2. or parent is ROOT
1867 * mkdir roundrobin. Or if parent doesn't have default LMV, while ROOT default
1868 * LMV requests roundrobin mkdir, do the same.
1869 * NB, this needs to check server is balanced, which is done by caller.
1871 static inline bool lmv_op_default_rr_mkdir(const struct md_op_data *op_data)
1873 const struct lmv_stripe_md *lsm = op_data->op_default_mea1;
1875 return (op_data->op_flags & MF_RR_MKDIR) ||
1876 (lsm && lsm->lsm_md_max_inherit_rr != LMV_INHERIT_RR_NONE) ||
1877 fid_is_root(&op_data->op_fid1);
1880 /* 'lfs mkdir -i <specific_MDT>' */
1881 static inline bool lmv_op_user_specific_mkdir(const struct md_op_data *op_data)
1883 const struct lmv_user_md *lum = op_data->op_data;
1885 return op_data->op_code == LUSTRE_OPC_MKDIR &&
1886 op_data->op_cli_flags & CLI_SET_MEA && lum &&
1887 (le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC ||
1888 le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC_SPECIFIC) &&
1889 le32_to_cpu(lum->lum_stripe_offset) != LMV_OFFSET_DEFAULT;
1892 /* parent default LMV master_mdt_index is not -1. */
1894 lmv_op_default_specific_mkdir(const struct md_op_data *op_data)
1896 return op_data->op_code == LUSTRE_OPC_MKDIR &&
1897 op_data->op_default_mea1 &&
1898 op_data->op_default_mea1->lsm_md_master_mdt_index !=
1902 /* locate MDT by space usage */
1903 static struct lu_tgt_desc *lmv_locate_tgt_by_space(struct lmv_obd *lmv,
1904 struct md_op_data *op_data,
1905 struct lmv_tgt_desc *tgt)
1907 struct lmv_tgt_desc *tmp = tgt;
1909 tgt = lmv_locate_tgt_qos(lmv, op_data);
1910 if (tgt == ERR_PTR(-EAGAIN)) {
1911 if (ltd_qos_is_balanced(&lmv->lmv_mdt_descs) &&
1912 !lmv_op_default_rr_mkdir(op_data) &&
1913 !lmv_op_user_qos_mkdir(op_data))
1914 /* if not necessary, don't create remote directory. */
1917 tgt = lmv_locate_tgt_rr(lmv);
1921 * only update statfs after QoS mkdir, this means the cached statfs may
1922 * be stale, and current mkdir may not follow QoS accurately, but it's
1923 * not serious, and avoids periodic statfs when client doesn't mkdir by
1927 op_data->op_mds = tgt->ltd_index;
1928 lmv_statfs_check_update(lmv2obd_dev(lmv), tgt);
1934 int lmv_create(struct obd_export *exp, struct md_op_data *op_data,
1935 const void *data, size_t datalen, umode_t mode, uid_t uid,
1936 gid_t gid, kernel_cap_t cap_effective, __u64 rdev,
1937 struct ptlrpc_request **request)
1939 struct obd_device *obd = exp->exp_obd;
1940 struct lmv_obd *lmv = &obd->u.lmv;
1941 struct lmv_tgt_desc *tgt;
1942 struct mdt_body *repbody;
1947 if (!lmv->lmv_mdt_descs.ltd_lmv_desc.ld_active_tgt_count)
1950 if (lmv_dir_bad_hash(op_data->op_mea1))
1953 if (lmv_dir_layout_changing(op_data->op_mea1)) {
1955 * if parent is migrating, create() needs to lookup existing
1956 * name in both old and new layout, check old layout on client.
1958 rc = lmv_old_layout_lookup(lmv, op_data);
1962 op_data->op_new_layout = true;
1965 tgt = lmv_locate_tgt(lmv, op_data);
1967 RETURN(PTR_ERR(tgt));
1969 /* the order to apply policy in mkdir:
1970 * 1. is "lfs mkdir -i N"? mkdir on MDT N.
1971 * 2. is "lfs mkdir -i -1"? mkdir by space usage.
1972 * 3. is starting MDT specified in default LMV? mkdir on MDT N.
1973 * 4. is default LMV space balanced? mkdir by space usage.
1975 if (lmv_op_user_specific_mkdir(op_data)) {
1976 struct lmv_user_md *lum = op_data->op_data;
1978 op_data->op_mds = le32_to_cpu(lum->lum_stripe_offset);
1979 tgt = lmv_tgt(lmv, op_data->op_mds);
1982 } else if (lmv_op_user_qos_mkdir(op_data)) {
1983 tgt = lmv_locate_tgt_by_space(lmv, op_data, tgt);
1985 RETURN(PTR_ERR(tgt));
1986 } else if (lmv_op_default_specific_mkdir(op_data)) {
1988 op_data->op_default_mea1->lsm_md_master_mdt_index;
1989 tgt = lmv_tgt(lmv, op_data->op_mds);
1992 } else if (lmv_op_default_qos_mkdir(op_data)) {
1993 tgt = lmv_locate_tgt_by_space(lmv, op_data, tgt);
1995 RETURN(PTR_ERR(tgt));
1999 rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
2003 CDEBUG(D_INODE, "CREATE name '%.*s' "DFID" on "DFID" -> mds #%x\n",
2004 (int)op_data->op_namelen, op_data->op_name,
2005 PFID(&op_data->op_fid2), PFID(&op_data->op_fid1),
2008 op_data->op_flags |= MF_MDC_CANCEL_FID1;
2009 rc = md_create(tgt->ltd_exp, op_data, data, datalen, mode, uid, gid,
2010 cap_effective, rdev, request);
2012 if (*request == NULL)
2014 CDEBUG(D_INODE, "Created - "DFID"\n", PFID(&op_data->op_fid2));
2017 /* dir restripe needs to send to MDT where dir is located */
2018 if (rc != -EREMOTE ||
2019 !(exp_connect_flags2(exp) & OBD_CONNECT2_CRUSH))
2022 repbody = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
2023 if (repbody == NULL)
2026 /* Not cross-ref case, just get out of here. */
2027 if (likely(!(repbody->mbo_valid & OBD_MD_MDS)))
2030 op_data->op_fid2 = repbody->mbo_fid1;
2031 ptlrpc_req_finished(*request);
2034 tgt = lmv_fid2tgt(lmv, &op_data->op_fid2);
2036 RETURN(PTR_ERR(tgt));
2038 op_data->op_mds = tgt->ltd_index;
2043 lmv_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
2044 const union ldlm_policy_data *policy, struct md_op_data *op_data,
2045 struct lustre_handle *lockh, __u64 extra_lock_flags)
2047 struct obd_device *obd = exp->exp_obd;
2048 struct lmv_obd *lmv = &obd->u.lmv;
2049 struct lmv_tgt_desc *tgt;
2054 CDEBUG(D_INODE, "ENQUEUE on "DFID"\n", PFID(&op_data->op_fid1));
2056 tgt = lmv_fid2tgt(lmv, &op_data->op_fid1);
2058 RETURN(PTR_ERR(tgt));
2060 CDEBUG(D_INODE, "ENQUEUE on "DFID" -> mds #%u\n",
2061 PFID(&op_data->op_fid1), tgt->ltd_index);
2063 rc = md_enqueue(tgt->ltd_exp, einfo, policy, op_data, lockh,
2070 lmv_getattr_name(struct obd_export *exp,struct md_op_data *op_data,
2071 struct ptlrpc_request **preq)
2073 struct obd_device *obd = exp->exp_obd;
2074 struct lmv_obd *lmv = &obd->u.lmv;
2075 struct lmv_tgt_desc *tgt;
2076 struct mdt_body *body;
2082 if (op_data->op_namelen == 2 &&
2083 op_data->op_name[0] == '.' && op_data->op_name[1] == '.')
2084 tgt = lmv_fid2tgt(lmv, &op_data->op_fid1);
2086 tgt = lmv_locate_tgt(lmv, op_data);
2088 RETURN(PTR_ERR(tgt));
2090 CDEBUG(D_INODE, "GETATTR_NAME for %*s on "DFID" -> mds #%d\n",
2091 (int)op_data->op_namelen, op_data->op_name,
2092 PFID(&op_data->op_fid1), tgt->ltd_index);
2094 rc = md_getattr_name(tgt->ltd_exp, op_data, preq);
2095 if (rc == -ENOENT && lmv_dir_retry_check_update(op_data)) {
2096 ptlrpc_req_finished(*preq);
2104 body = req_capsule_server_get(&(*preq)->rq_pill, &RMF_MDT_BODY);
2105 LASSERT(body != NULL);
2107 if (body->mbo_valid & OBD_MD_MDS) {
2108 op_data->op_fid1 = body->mbo_fid1;
2109 op_data->op_valid |= OBD_MD_FLCROSSREF;
2110 op_data->op_namelen = 0;
2111 op_data->op_name = NULL;
2113 ptlrpc_req_finished(*preq);
2122 #define md_op_data_fid(op_data, fl) \
2123 (fl == MF_MDC_CANCEL_FID1 ? &op_data->op_fid1 : \
2124 fl == MF_MDC_CANCEL_FID2 ? &op_data->op_fid2 : \
2125 fl == MF_MDC_CANCEL_FID3 ? &op_data->op_fid3 : \
2126 fl == MF_MDC_CANCEL_FID4 ? &op_data->op_fid4 : \
2129 static int lmv_early_cancel(struct obd_export *exp, struct lmv_tgt_desc *tgt,
2130 struct md_op_data *op_data, __u32 op_tgt,
2131 enum ldlm_mode mode, int bits, int flag)
2133 struct lu_fid *fid = md_op_data_fid(op_data, flag);
2134 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2135 union ldlm_policy_data policy = { { 0 } };
2139 if (!fid_is_sane(fid))
2143 tgt = lmv_fid2tgt(lmv, fid);
2145 RETURN(PTR_ERR(tgt));
2148 if (tgt->ltd_index != op_tgt) {
2149 CDEBUG(D_INODE, "EARLY_CANCEL on "DFID"\n", PFID(fid));
2150 policy.l_inodebits.bits = bits;
2151 rc = md_cancel_unused(tgt->ltd_exp, fid, &policy,
2152 mode, LCF_ASYNC, NULL);
2155 "EARLY_CANCEL skip operation target %d on "DFID"\n",
2157 op_data->op_flags |= flag;
2165 * llite passes fid of an target inode in op_data->op_fid1 and id of directory in
2168 static int lmv_link(struct obd_export *exp, struct md_op_data *op_data,
2169 struct ptlrpc_request **request)
2171 struct obd_device *obd = exp->exp_obd;
2172 struct lmv_obd *lmv = &obd->u.lmv;
2173 struct lmv_tgt_desc *tgt;
2177 LASSERT(op_data->op_namelen != 0);
2179 CDEBUG(D_INODE, "LINK "DFID":%*s to "DFID"\n",
2180 PFID(&op_data->op_fid2), (int)op_data->op_namelen,
2181 op_data->op_name, PFID(&op_data->op_fid1));
2183 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2184 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2185 op_data->op_cap = current_cap();
2187 tgt = lmv_locate_tgt2(lmv, op_data);
2189 RETURN(PTR_ERR(tgt));
2192 * Cancel UPDATE lock on child (fid1).
2194 op_data->op_flags |= MF_MDC_CANCEL_FID2;
2195 rc = lmv_early_cancel(exp, NULL, op_data, tgt->ltd_index, LCK_EX,
2196 MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1);
2200 rc = md_link(tgt->ltd_exp, op_data, request);
2205 /* migrate the top directory */
2206 static inline bool lmv_op_topdir_migrate(const struct md_op_data *op_data)
2208 if (!S_ISDIR(op_data->op_mode))
2211 if (lmv_dir_layout_changing(op_data->op_mea1))
2217 /* migrate top dir to specific MDTs */
2218 static inline bool lmv_topdir_specific_migrate(const struct md_op_data *op_data)
2220 const struct lmv_user_md *lum = op_data->op_data;
2222 if (!lmv_op_topdir_migrate(op_data))
2225 return le32_to_cpu(lum->lum_stripe_offset) != LMV_OFFSET_DEFAULT;
2228 /* migrate top dir in QoS mode if user issued "lfs migrate -m -1..." */
2229 static inline bool lmv_topdir_qos_migrate(const struct md_op_data *op_data)
2231 const struct lmv_user_md *lum = op_data->op_data;
2233 if (!lmv_op_topdir_migrate(op_data))
2236 return le32_to_cpu(lum->lum_stripe_offset) == LMV_OFFSET_DEFAULT;
2239 static inline bool lmv_subdir_specific_migrate(const struct md_op_data *op_data)
2241 const struct lmv_user_md *lum = op_data->op_data;
2243 if (!S_ISDIR(op_data->op_mode))
2246 if (!lmv_dir_layout_changing(op_data->op_mea1))
2249 return le32_to_cpu(lum->lum_stripe_offset) != LMV_OFFSET_DEFAULT;
2252 static int lmv_migrate(struct obd_export *exp, struct md_op_data *op_data,
2253 const char *name, size_t namelen,
2254 struct ptlrpc_request **request)
2256 struct obd_device *obd = exp->exp_obd;
2257 struct lmv_obd *lmv = &obd->u.lmv;
2258 struct lmv_stripe_md *lsm = op_data->op_mea1;
2259 struct lmv_tgt_desc *parent_tgt;
2260 struct lmv_tgt_desc *sp_tgt;
2261 struct lmv_tgt_desc *tp_tgt = NULL;
2262 struct lmv_tgt_desc *child_tgt;
2263 struct lmv_tgt_desc *tgt;
2264 struct lu_fid target_fid = { 0 };
2269 LASSERT(op_data->op_cli_flags & CLI_MIGRATE);
2271 CDEBUG(D_INODE, "MIGRATE "DFID"/%.*s\n",
2272 PFID(&op_data->op_fid1), (int)namelen, name);
2274 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2275 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2276 op_data->op_cap = current_cap();
2278 parent_tgt = lmv_fid2tgt(lmv, &op_data->op_fid1);
2279 if (IS_ERR(parent_tgt))
2280 RETURN(PTR_ERR(parent_tgt));
2282 if (lmv_dir_striped(lsm)) {
2283 const struct lmv_oinfo *oinfo;
2285 oinfo = lsm_name_to_stripe_info(lsm, name, namelen, false);
2287 RETURN(PTR_ERR(oinfo));
2289 /* save source stripe FID in fid4 temporarily for ELC */
2290 op_data->op_fid4 = oinfo->lmo_fid;
2291 sp_tgt = lmv_tgt(lmv, oinfo->lmo_mds);
2296 * if parent is being migrated too, fill op_fid2 with target
2297 * stripe fid, otherwise the target stripe is not created yet.
2299 if (lmv_dir_layout_changing(lsm)) {
2300 oinfo = lsm_name_to_stripe_info(lsm, name, namelen,
2303 RETURN(PTR_ERR(oinfo));
2305 op_data->op_fid2 = oinfo->lmo_fid;
2306 tp_tgt = lmv_tgt(lmv, oinfo->lmo_mds);
2310 /* parent unchanged and update namespace only */
2311 if (lu_fid_eq(&op_data->op_fid4, &op_data->op_fid2) &&
2312 op_data->op_bias & MDS_MIGRATE_NSONLY)
2316 sp_tgt = parent_tgt;
2319 child_tgt = lmv_fid2tgt(lmv, &op_data->op_fid3);
2320 if (IS_ERR(child_tgt))
2321 RETURN(PTR_ERR(child_tgt));
2323 if (lmv_topdir_specific_migrate(op_data)) {
2324 struct lmv_user_md *lum = op_data->op_data;
2326 op_data->op_mds = le32_to_cpu(lum->lum_stripe_offset);
2327 } else if (lmv_topdir_qos_migrate(op_data)) {
2328 tgt = lmv_locate_tgt_lf(lmv);
2329 if (tgt == ERR_PTR(-EAGAIN))
2330 tgt = lmv_locate_tgt_rr(lmv);
2332 RETURN(PTR_ERR(tgt));
2334 op_data->op_mds = tgt->ltd_index;
2335 } else if (lmv_subdir_specific_migrate(op_data)) {
2336 struct lmv_user_md *lum = op_data->op_data;
2340 if (le32_to_cpu(lum->lum_magic) == LMV_USER_MAGIC_SPECIFIC) {
2341 /* adjust MDTs in lum, since subdir is located on where
2342 * its parent stripe is, not the first specified MDT.
2344 for (i = 0; i < le32_to_cpu(lum->lum_stripe_count);
2346 if (le32_to_cpu(lum->lum_objects[i].lum_mds) ==
2351 if (i == le32_to_cpu(lum->lum_stripe_count))
2354 lum->lum_objects[i].lum_mds =
2355 lum->lum_objects[0].lum_mds;
2356 lum->lum_objects[0].lum_mds =
2357 cpu_to_le32(tp_tgt->ltd_index);
2359 /* NB, the above adjusts subdir migration for command like
2360 * "lfs migrate -m 0,1,2 ...", but for migration like
2361 * "lfs migrate -m 0 -c 2 ...", the top dir is migrated to MDT0
2362 * and MDT1, however its subdir may be migrated to MDT1 and MDT2
2365 lum->lum_stripe_offset = cpu_to_le32(tp_tgt->ltd_index);
2366 op_data->op_mds = tp_tgt->ltd_index;
2367 } else if (tp_tgt) {
2368 op_data->op_mds = tp_tgt->ltd_index;
2370 op_data->op_mds = sp_tgt->ltd_index;
2373 rc = lmv_fid_alloc(NULL, exp, &target_fid, op_data);
2378 * for directory, send migrate request to the MDT where the object will
2379 * be migrated to, because we can't create a striped directory remotely.
2381 * otherwise, send to the MDT where source is located because regular
2382 * file may open lease.
2384 * NB. if MDT doesn't support DIR_MIGRATE, send to source MDT too for
2385 * backward compatibility.
2387 if (S_ISDIR(op_data->op_mode) &&
2388 (exp_connect_flags2(exp) & OBD_CONNECT2_DIR_MIGRATE)) {
2389 tgt = lmv_fid2tgt(lmv, &target_fid);
2391 RETURN(PTR_ERR(tgt));
2396 /* cancel UPDATE lock of parent master object */
2397 rc = lmv_early_cancel(exp, parent_tgt, op_data, tgt->ltd_index, LCK_EX,
2398 MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1);
2402 /* cancel UPDATE lock of source parent */
2403 if (sp_tgt != parent_tgt) {
2405 * migrate RPC packs master object FID, because we can only pack
2406 * two FIDs in reint RPC, but MDS needs to know both source
2407 * parent and target parent, and it will obtain them from master
2408 * FID and LMV, the other FID in RPC is kept for target.
2410 * since this FID is not passed to MDC, cancel it anyway.
2412 rc = lmv_early_cancel(exp, sp_tgt, op_data, -1, LCK_EX,
2413 MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID4);
2417 op_data->op_flags &= ~MF_MDC_CANCEL_FID4;
2419 op_data->op_fid4 = target_fid;
2421 /* cancel UPDATE locks of target parent */
2422 rc = lmv_early_cancel(exp, tp_tgt, op_data, tgt->ltd_index, LCK_EX,
2423 MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID2);
2427 /* cancel LOOKUP lock of source if source is remote object */
2428 if (child_tgt != sp_tgt) {
2429 rc = lmv_early_cancel(exp, sp_tgt, op_data, tgt->ltd_index,
2430 LCK_EX, MDS_INODELOCK_LOOKUP,
2431 MF_MDC_CANCEL_FID3);
2436 /* cancel ELC locks of source */
2437 rc = lmv_early_cancel(exp, child_tgt, op_data, tgt->ltd_index, LCK_EX,
2438 MDS_INODELOCK_ELC, MF_MDC_CANCEL_FID3);
2442 rc = md_rename(tgt->ltd_exp, op_data, name, namelen, NULL, 0, request);
2447 static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data,
2448 const char *old, size_t oldlen,
2449 const char *new, size_t newlen,
2450 struct ptlrpc_request **request)
2452 struct obd_device *obd = exp->exp_obd;
2453 struct lmv_obd *lmv = &obd->u.lmv;
2454 struct lmv_tgt_desc *sp_tgt;
2455 struct lmv_tgt_desc *tp_tgt = NULL;
2456 struct lmv_tgt_desc *src_tgt = NULL;
2457 struct lmv_tgt_desc *tgt;
2458 struct mdt_body *body;
2463 LASSERT(oldlen != 0);
2465 if (op_data->op_cli_flags & CLI_MIGRATE) {
2466 rc = lmv_migrate(exp, op_data, old, oldlen, request);
2470 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2471 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2472 op_data->op_cap = current_cap();
2474 op_data->op_name = new;
2475 op_data->op_namelen = newlen;
2477 tp_tgt = lmv_locate_tgt2(lmv, op_data);
2479 RETURN(PTR_ERR(tp_tgt));
2481 /* Since the target child might be destroyed, and it might become
2482 * orphan, and we can only check orphan on the local MDT right now, so
2483 * we send rename request to the MDT where target child is located. If
2484 * target child does not exist, then it will send the request to the
2486 if (fid_is_sane(&op_data->op_fid4)) {
2487 tgt = lmv_fid2tgt(lmv, &op_data->op_fid4);
2489 RETURN(PTR_ERR(tgt));
2494 op_data->op_flags |= MF_MDC_CANCEL_FID4;
2496 /* cancel UPDATE locks of target parent */
2497 rc = lmv_early_cancel(exp, tp_tgt, op_data, tgt->ltd_index, LCK_EX,
2498 MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID2);
2502 if (fid_is_sane(&op_data->op_fid4)) {
2503 /* cancel LOOKUP lock of target on target parent */
2504 if (tgt != tp_tgt) {
2505 rc = lmv_early_cancel(exp, tp_tgt, op_data,
2506 tgt->ltd_index, LCK_EX,
2507 MDS_INODELOCK_LOOKUP,
2508 MF_MDC_CANCEL_FID4);
2514 if (fid_is_sane(&op_data->op_fid3)) {
2515 src_tgt = lmv_fid2tgt(lmv, &op_data->op_fid3);
2516 if (IS_ERR(src_tgt))
2517 RETURN(PTR_ERR(src_tgt));
2519 /* cancel ELC locks of source */
2520 rc = lmv_early_cancel(exp, src_tgt, op_data, tgt->ltd_index,
2521 LCK_EX, MDS_INODELOCK_ELC,
2522 MF_MDC_CANCEL_FID3);
2527 op_data->op_name = old;
2528 op_data->op_namelen = oldlen;
2530 sp_tgt = lmv_locate_tgt(lmv, op_data);
2532 RETURN(PTR_ERR(sp_tgt));
2534 /* cancel UPDATE locks of source parent */
2535 rc = lmv_early_cancel(exp, sp_tgt, op_data, tgt->ltd_index, LCK_EX,
2536 MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1);
2540 if (fid_is_sane(&op_data->op_fid3)) {
2541 /* cancel LOOKUP lock of source on source parent */
2542 if (src_tgt != sp_tgt) {
2543 rc = lmv_early_cancel(exp, sp_tgt, op_data,
2544 tgt->ltd_index, LCK_EX,
2545 MDS_INODELOCK_LOOKUP,
2546 MF_MDC_CANCEL_FID3);
2553 CDEBUG(D_INODE, "RENAME "DFID"/%.*s to "DFID"/%.*s\n",
2554 PFID(&op_data->op_fid1), (int)oldlen, old,
2555 PFID(&op_data->op_fid2), (int)newlen, new);
2557 rc = md_rename(tgt->ltd_exp, op_data, old, oldlen, new, newlen,
2559 if (rc == -ENOENT && lmv_dir_retry_check_update(op_data)) {
2560 ptlrpc_req_finished(*request);
2565 if (rc && rc != -EXDEV)
2568 body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
2572 /* Not cross-ref case, just get out of here. */
2573 if (likely(!(body->mbo_valid & OBD_MD_MDS)))
2576 op_data->op_fid4 = body->mbo_fid1;
2578 ptlrpc_req_finished(*request);
2581 tgt = lmv_fid2tgt(lmv, &op_data->op_fid4);
2583 RETURN(PTR_ERR(tgt));
2585 if (fid_is_sane(&op_data->op_fid4)) {
2586 /* cancel LOOKUP lock of target on target parent */
2587 if (tgt != tp_tgt) {
2588 rc = lmv_early_cancel(exp, tp_tgt, op_data,
2589 tgt->ltd_index, LCK_EX,
2590 MDS_INODELOCK_LOOKUP,
2591 MF_MDC_CANCEL_FID4);
2600 static int lmv_setattr(struct obd_export *exp, struct md_op_data *op_data,
2601 void *ea, size_t ealen, struct ptlrpc_request **request)
2603 struct obd_device *obd = exp->exp_obd;
2604 struct lmv_obd *lmv = &obd->u.lmv;
2605 struct lmv_tgt_desc *tgt;
2610 CDEBUG(D_INODE, "SETATTR for "DFID", valid 0x%x/0x%x\n",
2611 PFID(&op_data->op_fid1), op_data->op_attr.ia_valid,
2612 op_data->op_xvalid);
2614 op_data->op_flags |= MF_MDC_CANCEL_FID1;
2615 tgt = lmv_fid2tgt(lmv, &op_data->op_fid1);
2617 RETURN(PTR_ERR(tgt));
2619 rc = md_setattr(tgt->ltd_exp, op_data, ea, ealen, request);
2624 static int lmv_fsync(struct obd_export *exp, const struct lu_fid *fid,
2625 struct ptlrpc_request **request)
2627 struct obd_device *obd = exp->exp_obd;
2628 struct lmv_obd *lmv = &obd->u.lmv;
2629 struct lmv_tgt_desc *tgt;
2634 tgt = lmv_fid2tgt(lmv, fid);
2636 RETURN(PTR_ERR(tgt));
2638 rc = md_fsync(tgt->ltd_exp, fid, request);
2642 struct stripe_dirent {
2643 struct page *sd_page;
2644 struct lu_dirpage *sd_dp;
2645 struct lu_dirent *sd_ent;
2649 struct lmv_dir_ctxt {
2650 struct lmv_obd *ldc_lmv;
2651 struct md_op_data *ldc_op_data;
2652 struct md_readdir_info *ldc_mrinfo;
2655 struct stripe_dirent ldc_stripes[0];
2658 static inline void stripe_dirent_unload(struct stripe_dirent *stripe)
2660 if (stripe->sd_page) {
2661 kunmap(stripe->sd_page);
2662 put_page(stripe->sd_page);
2663 stripe->sd_page = NULL;
2664 stripe->sd_ent = NULL;
2668 static inline void put_lmv_dir_ctxt(struct lmv_dir_ctxt *ctxt)
2672 for (i = 0; i < ctxt->ldc_count; i++)
2673 stripe_dirent_unload(&ctxt->ldc_stripes[i]);
2676 /* if @ent is dummy, or . .., get next */
2677 static struct lu_dirent *stripe_dirent_get(struct lmv_dir_ctxt *ctxt,
2678 struct lu_dirent *ent,
2681 for (; ent; ent = lu_dirent_next(ent)) {
2682 /* Skip dummy entry */
2683 if (le16_to_cpu(ent->lde_namelen) == 0)
2686 /* skip . and .. for other stripes */
2688 (strncmp(ent->lde_name, ".",
2689 le16_to_cpu(ent->lde_namelen)) == 0 ||
2690 strncmp(ent->lde_name, "..",
2691 le16_to_cpu(ent->lde_namelen)) == 0))
2694 if (le64_to_cpu(ent->lde_hash) >= ctxt->ldc_hash)
2701 static struct lu_dirent *stripe_dirent_load(struct lmv_dir_ctxt *ctxt,
2702 struct stripe_dirent *stripe,
2705 struct md_op_data *op_data = ctxt->ldc_op_data;
2706 struct lmv_oinfo *oinfo;
2707 struct lu_fid fid = op_data->op_fid1;
2708 struct inode *inode = op_data->op_data;
2709 struct lmv_tgt_desc *tgt;
2710 struct lu_dirent *ent = stripe->sd_ent;
2711 __u64 hash = ctxt->ldc_hash;
2716 LASSERT(stripe == &ctxt->ldc_stripes[stripe_index]);
2720 if (stripe->sd_page) {
2721 __u64 end = le64_to_cpu(stripe->sd_dp->ldp_hash_end);
2723 /* @hash should be the last dirent hash */
2724 LASSERTF(hash <= end,
2725 "ctxt@%p stripe@%p hash %llx end %llx\n",
2726 ctxt, stripe, hash, end);
2727 /* unload last page */
2728 stripe_dirent_unload(stripe);
2730 if (end == MDS_DIR_END_OFF) {
2731 stripe->sd_eof = true;
2737 oinfo = &op_data->op_mea1->lsm_md_oinfo[stripe_index];
2738 if (!oinfo->lmo_root) {
2743 tgt = lmv_tgt(ctxt->ldc_lmv, oinfo->lmo_mds);
2749 /* op_data is shared by stripes, reset after use */
2750 op_data->op_fid1 = oinfo->lmo_fid;
2751 op_data->op_fid2 = oinfo->lmo_fid;
2752 op_data->op_data = oinfo->lmo_root;
2754 rc = md_read_page(tgt->ltd_exp, op_data, ctxt->ldc_mrinfo, hash,
2757 op_data->op_fid1 = fid;
2758 op_data->op_fid2 = fid;
2759 op_data->op_data = inode;
2764 stripe->sd_dp = page_address(stripe->sd_page);
2765 ent = stripe_dirent_get(ctxt, lu_dirent_start(stripe->sd_dp),
2767 /* in case a page filled with ., .. and dummy, read next */
2770 stripe->sd_ent = ent;
2773 /* treat error as eof, so dir can be partially accessed */
2774 stripe->sd_eof = true;
2775 ctxt->ldc_mrinfo->mr_partial_readdir_rc = rc;
2776 LCONSOLE_WARN("dir "DFID" stripe %d readdir failed: %d, "
2777 "directory is partially accessed!\n",
2778 PFID(&ctxt->ldc_op_data->op_fid1), stripe_index,
2785 static int lmv_file_resync(struct obd_export *exp, struct md_op_data *data)
2787 struct obd_device *obd = exp->exp_obd;
2788 struct lmv_obd *lmv = &obd->u.lmv;
2789 struct lmv_tgt_desc *tgt;
2794 rc = lmv_check_connect(obd);
2798 tgt = lmv_fid2tgt(lmv, &data->op_fid1);
2800 RETURN(PTR_ERR(tgt));
2802 data->op_flags |= MF_MDC_CANCEL_FID1;
2803 rc = md_file_resync(tgt->ltd_exp, data);
2808 * Get dirent with the closest hash for striped directory
2810 * This function will search the dir entry, whose hash value is the
2811 * closest(>=) to hash from all of sub-stripes, and it is only being called
2812 * for striped directory.
2814 * \param[in] ctxt dir read context
2816 * \retval dirent get the entry successfully
2817 * NULL does not get the entry, normally it means
2818 * it reaches the end of the directory, while read
2819 * stripe dirent error is ignored to allow partial
2822 static struct lu_dirent *lmv_dirent_next(struct lmv_dir_ctxt *ctxt)
2824 struct stripe_dirent *stripe;
2825 struct lu_dirent *ent = NULL;
2829 /* TODO: optimize with k-way merge sort */
2830 for (i = 0; i < ctxt->ldc_count; i++) {
2831 stripe = &ctxt->ldc_stripes[i];
2835 if (!stripe->sd_ent) {
2836 stripe_dirent_load(ctxt, stripe, i);
2837 if (!stripe->sd_ent) {
2838 LASSERT(stripe->sd_eof);
2844 le64_to_cpu(ctxt->ldc_stripes[min].sd_ent->lde_hash) >
2845 le64_to_cpu(stripe->sd_ent->lde_hash)) {
2847 if (le64_to_cpu(stripe->sd_ent->lde_hash) ==
2854 stripe = &ctxt->ldc_stripes[min];
2855 ent = stripe->sd_ent;
2856 /* pop found dirent */
2857 stripe->sd_ent = stripe_dirent_get(ctxt, lu_dirent_next(ent),
2865 * Build dir entry page for striped directory
2867 * This function gets one entry by @offset from a striped directory. It will
2868 * read entries from all of stripes, and choose one closest to the required
2869 * offset(&offset). A few notes
2870 * 1. skip . and .. for non-zero stripes, because there can only have one .
2871 * and .. in a directory.
2872 * 2. op_data will be shared by all of stripes, instead of allocating new
2873 * one, so need to restore before reusing.
2875 * \param[in] exp obd export refer to LMV
2876 * \param[in] op_data hold those MD parameters of read_entry
2877 * \param[in] mrinfo ldlm callback being used in enqueue in mdc_read_entry,
2878 * and partial readdir result will be stored in it.
2879 * \param[in] offset starting hash offset
2880 * \param[out] ppage the page holding the entry. Note: because the entry
2881 * will be accessed in upper layer, so we need hold the
2882 * page until the usages of entry is finished, see
2883 * ll_dir_entry_next.
2885 * retval =0 if get entry successfully
2886 * <0 cannot get entry
2888 static int lmv_striped_read_page(struct obd_export *exp,
2889 struct md_op_data *op_data,
2890 struct md_readdir_info *mrinfo, __u64 offset,
2891 struct page **ppage)
2893 struct page *page = NULL;
2894 struct lu_dirpage *dp;
2896 struct lu_dirent *ent;
2897 struct lu_dirent *last_ent;
2899 struct lmv_dir_ctxt *ctxt;
2900 struct lu_dirent *next = NULL;
2906 /* Allocate a page and read entries from all of stripes and fill
2907 * the page by hash order */
2908 page = alloc_page(GFP_KERNEL);
2912 /* Initialize the entry page */
2914 memset(dp, 0, sizeof(*dp));
2915 dp->ldp_hash_start = cpu_to_le64(offset);
2918 left_bytes = PAGE_SIZE - sizeof(*dp);
2922 /* initalize dir read context */
2923 stripe_count = op_data->op_mea1->lsm_md_stripe_count;
2924 OBD_ALLOC(ctxt, offsetof(typeof(*ctxt), ldc_stripes[stripe_count]));
2926 GOTO(free_page, rc = -ENOMEM);
2927 ctxt->ldc_lmv = &exp->exp_obd->u.lmv;
2928 ctxt->ldc_op_data = op_data;
2929 ctxt->ldc_mrinfo = mrinfo;
2930 ctxt->ldc_hash = offset;
2931 ctxt->ldc_count = stripe_count;
2934 next = lmv_dirent_next(ctxt);
2936 /* end of directory */
2938 ctxt->ldc_hash = MDS_DIR_END_OFF;
2941 ctxt->ldc_hash = le64_to_cpu(next->lde_hash);
2943 ent_size = le16_to_cpu(next->lde_reclen);
2945 /* the last entry lde_reclen is 0, but it might not be the last
2946 * one of this temporay dir page */
2948 ent_size = lu_dirent_calc_size(
2949 le16_to_cpu(next->lde_namelen),
2950 le32_to_cpu(next->lde_attrs));
2952 if (ent_size > left_bytes)
2955 memcpy(ent, next, ent_size);
2957 /* Replace . with master FID and Replace .. with the parent FID
2958 * of master object */
2959 if (strncmp(ent->lde_name, ".",
2960 le16_to_cpu(ent->lde_namelen)) == 0 &&
2961 le16_to_cpu(ent->lde_namelen) == 1)
2962 fid_cpu_to_le(&ent->lde_fid, &op_data->op_fid1);
2963 else if (strncmp(ent->lde_name, "..",
2964 le16_to_cpu(ent->lde_namelen)) == 0 &&
2965 le16_to_cpu(ent->lde_namelen) == 2)
2966 fid_cpu_to_le(&ent->lde_fid, &op_data->op_fid3);
2968 CDEBUG(D_INODE, "entry %.*s hash %#llx\n",
2969 le16_to_cpu(ent->lde_namelen), ent->lde_name,
2970 le64_to_cpu(ent->lde_hash));
2972 left_bytes -= ent_size;
2973 ent->lde_reclen = cpu_to_le16(ent_size);
2975 ent = (void *)ent + ent_size;
2978 last_ent->lde_reclen = 0;
2981 dp->ldp_flags |= LDF_EMPTY;
2982 else if (ctxt->ldc_hash == le64_to_cpu(last_ent->lde_hash))
2983 dp->ldp_flags |= LDF_COLLIDE;
2984 dp->ldp_flags = cpu_to_le32(dp->ldp_flags);
2985 dp->ldp_hash_end = cpu_to_le64(ctxt->ldc_hash);
2987 put_lmv_dir_ctxt(ctxt);
2988 OBD_FREE(ctxt, offsetof(typeof(*ctxt), ldc_stripes[stripe_count]));
3001 static int lmv_read_page(struct obd_export *exp, struct md_op_data *op_data,
3002 struct md_readdir_info *mrinfo, __u64 offset,
3003 struct page **ppage)
3005 struct obd_device *obd = exp->exp_obd;
3006 struct lmv_obd *lmv = &obd->u.lmv;
3007 struct lmv_tgt_desc *tgt;
3012 if (unlikely(lmv_dir_foreign(op_data->op_mea1)))
3015 if (unlikely(lmv_dir_striped(op_data->op_mea1))) {
3016 rc = lmv_striped_read_page(exp, op_data, mrinfo, offset, ppage);
3020 tgt = lmv_fid2tgt(lmv, &op_data->op_fid1);
3022 RETURN(PTR_ERR(tgt));
3024 rc = md_read_page(tgt->ltd_exp, op_data, mrinfo, offset, ppage);
3030 * Unlink a file/directory
3032 * Unlink a file or directory under the parent dir. The unlink request
3033 * usually will be sent to the MDT where the child is located, but if
3034 * the client does not have the child FID then request will be sent to the
3035 * MDT where the parent is located.
3037 * If the parent is a striped directory then it also needs to locate which
3038 * stripe the name of the child is located, and replace the parent FID
3039 * (@op->op_fid1) with the stripe FID. Note: if the stripe is unknown,
3040 * it will walk through all of sub-stripes until the child is being
3043 * \param[in] exp export refer to LMV
3044 * \param[in] op_data different parameters transferred beween client
3045 * MD stacks, name, namelen, FIDs etc.
3046 * op_fid1 is the parent FID, op_fid2 is the child
3048 * \param[out] request point to the request of unlink.
3050 * retval 0 if succeed
3051 * negative errno if failed.
3053 static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data,
3054 struct ptlrpc_request **request)
3056 struct obd_device *obd = exp->exp_obd;
3057 struct lmv_obd *lmv = &obd->u.lmv;
3058 struct lmv_tgt_desc *tgt;
3059 struct lmv_tgt_desc *parent_tgt;
3060 struct mdt_body *body;
3065 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
3066 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
3067 op_data->op_cap = current_cap();
3070 parent_tgt = lmv_locate_tgt(lmv, op_data);
3071 if (IS_ERR(parent_tgt))
3072 RETURN(PTR_ERR(parent_tgt));
3074 if (likely(!fid_is_zero(&op_data->op_fid2))) {
3075 tgt = lmv_fid2tgt(lmv, &op_data->op_fid2);
3077 RETURN(PTR_ERR(tgt));
3083 * If child's fid is given, cancel unused locks for it if it is from
3084 * another export than parent.
3086 * LOOKUP lock for child (fid3) should also be cancelled on parent
3087 * tgt_tgt in mdc_unlink().
3089 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
3091 if (parent_tgt != tgt)
3092 rc = lmv_early_cancel(exp, parent_tgt, op_data, tgt->ltd_index,
3093 LCK_EX, MDS_INODELOCK_LOOKUP,
3094 MF_MDC_CANCEL_FID3);
3096 rc = lmv_early_cancel(exp, NULL, op_data, tgt->ltd_index, LCK_EX,
3097 MDS_INODELOCK_ELC, MF_MDC_CANCEL_FID3);
3101 CDEBUG(D_INODE, "unlink with fid="DFID"/"DFID" -> mds #%u\n",
3102 PFID(&op_data->op_fid1), PFID(&op_data->op_fid2),
3105 rc = md_unlink(tgt->ltd_exp, op_data, request);
3106 if (rc == -ENOENT && lmv_dir_retry_check_update(op_data)) {
3107 ptlrpc_req_finished(*request);
3115 body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
3119 /* Not cross-ref case, just get out of here. */
3120 if (likely(!(body->mbo_valid & OBD_MD_MDS)))
3123 /* This is a remote object, try remote MDT. */
3124 op_data->op_fid2 = body->mbo_fid1;
3125 ptlrpc_req_finished(*request);
3128 tgt = lmv_fid2tgt(lmv, &op_data->op_fid2);
3130 RETURN(PTR_ERR(tgt));
3135 static int lmv_precleanup(struct obd_device *obd)
3138 libcfs_kkuc_group_rem(&obd->obd_uuid, 0, KUC_GRP_HSM);
3143 * Get by key a value associated with a LMV device.
3145 * Dispatch request to lower-layer devices as needed.
3147 * \param[in] env execution environment for this thread
3148 * \param[in] exp export for the LMV device
3149 * \param[in] keylen length of key identifier
3150 * \param[in] key identifier of key to get value for
3151 * \param[in] vallen size of \a val
3152 * \param[out] val pointer to storage location for value
3153 * \param[in] lsm optional striping metadata of object
3155 * \retval 0 on success
3156 * \retval negative negated errno on failure
3158 static int lmv_get_info(const struct lu_env *env, struct obd_export *exp,
3159 __u32 keylen, void *key, __u32 *vallen, void *val)
3161 struct obd_device *obd;
3162 struct lmv_obd *lmv;
3163 struct lu_tgt_desc *tgt;
3168 obd = class_exp2obd(exp);
3170 CDEBUG(D_IOCTL, "Invalid client cookie %#llx\n",
3171 exp->exp_handle.h_cookie);
3176 if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) {
3177 LASSERT(*vallen == sizeof(__u32));
3178 lmv_foreach_connected_tgt(lmv, tgt) {
3179 if (!obd_get_info(env, tgt->ltd_exp, keylen, key,
3184 } else if (KEY_IS(KEY_MAX_EASIZE) ||
3185 KEY_IS(KEY_DEFAULT_EASIZE) ||
3186 KEY_IS(KEY_CONN_DATA)) {
3188 * Forwarding this request to first MDS, it should know LOV
3191 tgt = lmv_tgt(lmv, 0);
3195 rc = obd_get_info(env, tgt->ltd_exp, keylen, key, vallen, val);
3196 if (!rc && KEY_IS(KEY_CONN_DATA))
3197 exp->exp_connect_data = *(struct obd_connect_data *)val;
3199 } else if (KEY_IS(KEY_TGT_COUNT)) {
3200 *((int *)val) = lmv->lmv_mdt_descs.ltd_tgts_size;
3204 CDEBUG(D_IOCTL, "Invalid key\n");
3208 static int lmv_rmfid(struct obd_export *exp, struct fid_array *fa,
3209 int *__rcs, struct ptlrpc_request_set *_set)
3211 struct obd_device *obd = class_exp2obd(exp);
3212 struct ptlrpc_request_set *set = _set;
3213 struct lmv_obd *lmv = &obd->u.lmv;
3214 int tgt_count = lmv->lmv_mdt_count;
3215 struct lu_tgt_desc *tgt;
3216 struct fid_array *fat, **fas = NULL;
3217 int i, rc, **rcs = NULL;
3220 set = ptlrpc_prep_set();
3225 /* split FIDs by targets */
3226 OBD_ALLOC_PTR_ARRAY(fas, tgt_count);
3228 GOTO(out, rc = -ENOMEM);
3229 OBD_ALLOC_PTR_ARRAY(rcs, tgt_count);
3231 GOTO(out_fas, rc = -ENOMEM);
3233 for (i = 0; i < fa->fa_nr; i++) {
3236 rc = lmv_fld_lookup(lmv, &fa->fa_fids[i], &idx);
3238 CDEBUG(D_OTHER, "can't lookup "DFID": rc = %d\n",
3239 PFID(&fa->fa_fids[i]), rc);
3242 LASSERT(idx < tgt_count);
3244 OBD_ALLOC(fas[idx], offsetof(struct fid_array,
3245 fa_fids[fa->fa_nr]));
3247 GOTO(out, rc = -ENOMEM);
3249 OBD_ALLOC_PTR_ARRAY(rcs[idx], fa->fa_nr);
3251 GOTO(out, rc = -ENOMEM);
3254 fat->fa_fids[fat->fa_nr++] = fa->fa_fids[i];
3257 lmv_foreach_connected_tgt(lmv, tgt) {
3258 fat = fas[tgt->ltd_index];
3259 if (!fat || fat->fa_nr == 0)
3261 rc = md_rmfid(tgt->ltd_exp, fat, rcs[tgt->ltd_index], set);
3264 rc = ptlrpc_set_wait(NULL, set);
3267 for (i = 0; i < tgt_count; i++) {
3269 if (!fat || fat->fa_nr == 0)
3271 /* copy FIDs back */
3272 memcpy(fa->fa_fids + j, fat->fa_fids,
3273 fat->fa_nr * sizeof(struct lu_fid));
3275 memcpy(__rcs + j, rcs[i], fat->fa_nr * sizeof(**rcs));
3280 ptlrpc_set_destroy(set);
3283 for (i = 0; i < tgt_count; i++) {
3285 OBD_FREE(fas[i], offsetof(struct fid_array,
3286 fa_fids[fa->fa_nr]));
3288 OBD_FREE_PTR_ARRAY(rcs[i], fa->fa_nr);
3291 OBD_FREE_PTR_ARRAY(rcs, tgt_count);
3294 OBD_FREE_PTR_ARRAY(fas, tgt_count);
3300 * Asynchronously set by key a value associated with a LMV device.
3302 * Dispatch request to lower-layer devices as needed.
3304 * \param[in] env execution environment for this thread
3305 * \param[in] exp export for the LMV device
3306 * \param[in] keylen length of key identifier
3307 * \param[in] key identifier of key to store value for
3308 * \param[in] vallen size of value to store
3309 * \param[in] val pointer to data to be stored
3310 * \param[in] set optional list of related ptlrpc requests
3312 * \retval 0 on success
3313 * \retval negative negated errno on failure
3315 static int lmv_set_info_async(const struct lu_env *env, struct obd_export *exp,
3316 __u32 keylen, void *key, __u32 vallen, void *val,
3317 struct ptlrpc_request_set *set)
3319 struct lmv_tgt_desc *tgt;
3320 struct obd_device *obd;
3321 struct lmv_obd *lmv;
3325 obd = class_exp2obd(exp);
3327 CDEBUG(D_IOCTL, "Invalid client cookie %#llx\n",
3328 exp->exp_handle.h_cookie);
3333 if (KEY_IS(KEY_READ_ONLY) || KEY_IS(KEY_FLUSH_CTX) ||
3334 KEY_IS(KEY_DEFAULT_EASIZE)) {
3337 lmv_foreach_connected_tgt(lmv, tgt) {
3338 err = obd_set_info_async(env, tgt->ltd_exp,
3339 keylen, key, vallen, val, set);
3350 static int lmv_unpack_md_v1(struct obd_export *exp, struct lmv_stripe_md *lsm,
3351 const struct lmv_mds_md_v1 *lmm1)
3353 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
3360 lsm->lsm_md_magic = le32_to_cpu(lmm1->lmv_magic);
3361 lsm->lsm_md_stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
3362 lsm->lsm_md_master_mdt_index = le32_to_cpu(lmm1->lmv_master_mdt_index);
3363 if (CFS_FAIL_CHECK(OBD_FAIL_LMV_UNKNOWN_STRIPE))
3364 lsm->lsm_md_hash_type = cfs_fail_val ?: LMV_HASH_TYPE_UNKNOWN;
3366 lsm->lsm_md_hash_type = le32_to_cpu(lmm1->lmv_hash_type);
3367 lsm->lsm_md_layout_version = le32_to_cpu(lmm1->lmv_layout_version);
3368 lsm->lsm_md_migrate_offset = le32_to_cpu(lmm1->lmv_migrate_offset);
3369 lsm->lsm_md_migrate_hash = le32_to_cpu(lmm1->lmv_migrate_hash);
3370 cplen = strlcpy(lsm->lsm_md_pool_name, lmm1->lmv_pool_name,
3371 sizeof(lsm->lsm_md_pool_name));
3373 if (cplen >= sizeof(lsm->lsm_md_pool_name))
3376 CDEBUG(D_INFO, "unpack lsm count %d/%d, master %d hash_type %#x/%#x "
3377 "layout_version %d\n", lsm->lsm_md_stripe_count,
3378 lsm->lsm_md_migrate_offset, lsm->lsm_md_master_mdt_index,
3379 lsm->lsm_md_hash_type, lsm->lsm_md_migrate_hash,
3380 lsm->lsm_md_layout_version);
3382 stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
3383 for (i = 0; i < stripe_count; i++) {
3384 fid_le_to_cpu(&lsm->lsm_md_oinfo[i].lmo_fid,
3385 &lmm1->lmv_stripe_fids[i]);
3387 * set default value -1, so lmv_locate_tgt() knows this stripe
3388 * target is not initialized.
3390 lsm->lsm_md_oinfo[i].lmo_mds = LMV_OFFSET_DEFAULT;
3391 if (!fid_is_sane(&lsm->lsm_md_oinfo[i].lmo_fid))
3394 rc = lmv_fld_lookup(lmv, &lsm->lsm_md_oinfo[i].lmo_fid,
3395 &lsm->lsm_md_oinfo[i].lmo_mds);
3402 CDEBUG(D_INFO, "unpack fid #%d "DFID"\n", i,
3403 PFID(&lsm->lsm_md_oinfo[i].lmo_fid));
3409 static inline int lmv_unpack_user_md(struct obd_export *exp,
3410 struct lmv_stripe_md *lsm,
3411 const struct lmv_user_md *lmu)
3413 lsm->lsm_md_magic = le32_to_cpu(lmu->lum_magic);
3414 lsm->lsm_md_stripe_count = le32_to_cpu(lmu->lum_stripe_count);
3415 lsm->lsm_md_master_mdt_index = le32_to_cpu(lmu->lum_stripe_offset);
3416 lsm->lsm_md_hash_type = le32_to_cpu(lmu->lum_hash_type);
3417 lsm->lsm_md_max_inherit = lmu->lum_max_inherit;
3418 lsm->lsm_md_max_inherit_rr = lmu->lum_max_inherit_rr;
3419 lsm->lsm_md_pool_name[LOV_MAXPOOLNAME] = 0;
3424 static int lmv_unpackmd(struct obd_export *exp, struct lmv_stripe_md **lsmp,
3425 const union lmv_mds_md *lmm, size_t lmm_size)
3427 struct lmv_stripe_md *lsm;
3430 bool allocated = false;
3433 LASSERT(lsmp != NULL);
3437 if (lsm != NULL && lmm == NULL) {
3439 struct lmv_foreign_md *lfm = (struct lmv_foreign_md *)lsm;
3441 if (lfm->lfm_magic == LMV_MAGIC_FOREIGN) {
3444 lfm_size = lfm->lfm_length + offsetof(typeof(*lfm),
3446 OBD_FREE_LARGE(lfm, lfm_size);
3450 if (lmv_dir_striped(lsm)) {
3451 for (i = 0; i < lsm->lsm_md_stripe_count; i++)
3452 iput(lsm->lsm_md_oinfo[i].lmo_root);
3453 lsm_size = lmv_stripe_md_size(lsm->lsm_md_stripe_count);
3455 lsm_size = lmv_stripe_md_size(0);
3457 OBD_FREE(lsm, lsm_size);
3462 /* foreign lmv case */
3463 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_FOREIGN) {
3464 struct lmv_foreign_md *lfm = (struct lmv_foreign_md *)lsm;
3467 OBD_ALLOC_LARGE(lfm, lmm_size);
3470 *lsmp = (struct lmv_stripe_md *)lfm;
3472 lfm->lfm_magic = le32_to_cpu(lmm->lmv_foreign_md.lfm_magic);
3473 lfm->lfm_length = le32_to_cpu(lmm->lmv_foreign_md.lfm_length);
3474 lfm->lfm_type = le32_to_cpu(lmm->lmv_foreign_md.lfm_type);
3475 lfm->lfm_flags = le32_to_cpu(lmm->lmv_foreign_md.lfm_flags);
3476 memcpy(&lfm->lfm_value, &lmm->lmv_foreign_md.lfm_value,
3481 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE)
3485 if (le32_to_cpu(lmm->lmv_magic) != LMV_MAGIC_V1 &&
3486 le32_to_cpu(lmm->lmv_magic) != LMV_USER_MAGIC) {
3487 CERROR("%s: invalid lmv magic %x: rc = %d\n",
3488 exp->exp_obd->obd_name, le32_to_cpu(lmm->lmv_magic),
3493 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_V1)
3494 lsm_size = lmv_stripe_md_size(lmv_mds_md_stripe_count_get(lmm));
3497 * Unpack default dirstripe(lmv_user_md) to lmv_stripe_md,
3498 * stripecount should be 0 then.
3500 lsm_size = lmv_stripe_md_size(0);
3503 OBD_ALLOC(lsm, lsm_size);
3510 switch (le32_to_cpu(lmm->lmv_magic)) {
3512 rc = lmv_unpack_md_v1(exp, lsm, &lmm->lmv_md_v1);
3514 case LMV_USER_MAGIC:
3515 rc = lmv_unpack_user_md(exp, lsm, &lmm->lmv_user_md);
3518 CERROR("%s: unrecognized magic %x\n", exp->exp_obd->obd_name,
3519 le32_to_cpu(lmm->lmv_magic));
3524 if (rc != 0 && allocated) {
3525 OBD_FREE(lsm, lsm_size);
3532 void lmv_free_memmd(struct lmv_stripe_md *lsm)
3534 lmv_unpackmd(NULL, &lsm, NULL, 0);
3536 EXPORT_SYMBOL(lmv_free_memmd);
3538 static int lmv_cancel_unused(struct obd_export *exp, const struct lu_fid *fid,
3539 union ldlm_policy_data *policy,
3540 enum ldlm_mode mode, enum ldlm_cancel_flags flags,
3543 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
3544 struct lu_tgt_desc *tgt;
3550 LASSERT(fid != NULL);
3552 lmv_foreach_connected_tgt(lmv, tgt) {
3553 if (!tgt->ltd_active)
3556 err = md_cancel_unused(tgt->ltd_exp, fid, policy, mode, flags,
3564 static int lmv_set_lock_data(struct obd_export *exp,
3565 const struct lustre_handle *lockh,
3566 void *data, __u64 *bits)
3568 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
3569 struct lmv_tgt_desc *tgt = lmv_tgt(lmv, 0);
3574 if (tgt == NULL || tgt->ltd_exp == NULL)
3576 rc = md_set_lock_data(tgt->ltd_exp, lockh, data, bits);
3580 static enum ldlm_mode
3581 lmv_lock_match(struct obd_export *exp, __u64 flags,
3582 const struct lu_fid *fid, enum ldlm_type type,
3583 union ldlm_policy_data *policy,
3584 enum ldlm_mode mode, struct lustre_handle *lockh)
3586 struct obd_device *obd = exp->exp_obd;
3587 struct lmv_obd *lmv = &obd->u.lmv;
3589 struct lu_tgt_desc *tgt;
3595 CDEBUG(D_INODE, "Lock match for "DFID"\n", PFID(fid));
3598 * With DNE every object can have two locks in different namespaces:
3599 * lookup lock in space of MDT storing direntry and update/open lock in
3600 * space of MDT storing inode. Try the MDT that the FID maps to first,
3601 * since this can be easily found, and only try others if that fails.
3603 for (i = 0, index = lmv_fid2tgt_index(lmv, fid);
3604 i < lmv->lmv_mdt_descs.ltd_tgts_size;
3605 i++, index = (index + 1) % lmv->lmv_mdt_descs.ltd_tgts_size) {
3607 CDEBUG(D_HA, "%s: "DFID" is inaccessible: rc = %d\n",
3608 obd->obd_name, PFID(fid), index);
3612 tgt = lmv_tgt(lmv, index);
3613 if (!tgt || !tgt->ltd_exp || !tgt->ltd_active)
3616 rc = md_lock_match(tgt->ltd_exp, flags, fid, type, policy, mode,
3626 lmv_get_lustre_md(struct obd_export *exp, struct req_capsule *pill,
3627 struct obd_export *dt_exp, struct obd_export *md_exp,
3628 struct lustre_md *md)
3630 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
3631 struct lmv_tgt_desc *tgt = lmv_tgt(lmv, 0);
3633 if (!tgt || !tgt->ltd_exp)
3636 return md_get_lustre_md(tgt->ltd_exp, pill, dt_exp, md_exp, md);
3639 static int lmv_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
3641 struct obd_device *obd = exp->exp_obd;
3642 struct lmv_obd *lmv = &obd->u.lmv;
3643 struct lmv_tgt_desc *tgt = lmv_tgt(lmv, 0);
3647 if (md->default_lmv) {
3648 lmv_free_memmd(md->default_lmv);
3649 md->default_lmv = NULL;
3651 if (md->lmv != NULL) {
3652 lmv_free_memmd(md->lmv);
3655 if (!tgt || !tgt->ltd_exp)
3657 RETURN(md_free_lustre_md(tgt->ltd_exp, md));
3660 static int lmv_set_open_replay_data(struct obd_export *exp,
3661 struct obd_client_handle *och,
3662 struct lookup_intent *it)
3664 struct obd_device *obd = exp->exp_obd;
3665 struct lmv_obd *lmv = &obd->u.lmv;
3666 struct lmv_tgt_desc *tgt;
3670 tgt = lmv_fid2tgt(lmv, &och->och_fid);
3672 RETURN(PTR_ERR(tgt));
3674 RETURN(md_set_open_replay_data(tgt->ltd_exp, och, it));
3677 static int lmv_clear_open_replay_data(struct obd_export *exp,
3678 struct obd_client_handle *och)
3680 struct obd_device *obd = exp->exp_obd;
3681 struct lmv_obd *lmv = &obd->u.lmv;
3682 struct lmv_tgt_desc *tgt;
3686 tgt = lmv_fid2tgt(lmv, &och->och_fid);
3688 RETURN(PTR_ERR(tgt));
3690 RETURN(md_clear_open_replay_data(tgt->ltd_exp, och));
3693 static int lmv_intent_getattr_async(struct obd_export *exp,
3694 struct md_enqueue_info *minfo)
3696 struct md_op_data *op_data = &minfo->mi_data;
3697 struct obd_device *obd = exp->exp_obd;
3698 struct lmv_obd *lmv = &obd->u.lmv;
3699 struct lmv_tgt_desc *ptgt;
3700 struct lmv_tgt_desc *ctgt;
3705 if (!fid_is_sane(&op_data->op_fid2))
3708 ptgt = lmv_locate_tgt(lmv, op_data);
3710 RETURN(PTR_ERR(ptgt));
3712 ctgt = lmv_fid2tgt(lmv, &op_data->op_fid2);
3714 RETURN(PTR_ERR(ctgt));
3717 * remote object needs two RPCs to lookup and getattr, considering the
3718 * complexity don't support statahead for now.
3723 rc = md_intent_getattr_async(ptgt->ltd_exp, minfo);
3728 static int lmv_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
3729 struct lu_fid *fid, __u64 *bits)
3731 struct obd_device *obd = exp->exp_obd;
3732 struct lmv_obd *lmv = &obd->u.lmv;
3733 struct lmv_tgt_desc *tgt;
3738 tgt = lmv_fid2tgt(lmv, fid);
3740 RETURN(PTR_ERR(tgt));
3742 rc = md_revalidate_lock(tgt->ltd_exp, it, fid, bits);
3746 static int lmv_get_fid_from_lsm(struct obd_export *exp,
3747 const struct lmv_stripe_md *lsm,
3748 const char *name, int namelen,
3751 const struct lmv_oinfo *oinfo;
3753 if (!lmv_dir_striped(lsm))
3756 oinfo = lsm_name_to_stripe_info(lsm, name, namelen, false);
3758 return PTR_ERR(oinfo);
3760 *fid = oinfo->lmo_fid;
3766 * For lmv, only need to send request to master MDT, and the master MDT will
3767 * process with other slave MDTs. The only exception is Q_GETOQUOTA for which
3768 * we directly fetch data from the slave MDTs.
3770 static int lmv_quotactl(struct obd_device *unused, struct obd_export *exp,
3771 struct obd_quotactl *oqctl)
3773 struct obd_device *obd = class_exp2obd(exp);
3774 struct lmv_obd *lmv = &obd->u.lmv;
3775 struct lmv_tgt_desc *tgt = lmv_tgt(lmv, 0);
3776 __u64 curspace, curinodes;
3781 if (!tgt || !tgt->ltd_exp || !tgt->ltd_active) {
3782 CERROR("master lmv inactive\n");
3786 if (oqctl->qc_cmd != Q_GETOQUOTA) {
3787 rc = obd_quotactl(tgt->ltd_exp, oqctl);
3791 curspace = curinodes = 0;
3792 lmv_foreach_connected_tgt(lmv, tgt) {
3795 if (!tgt->ltd_active)
3798 err = obd_quotactl(tgt->ltd_exp, oqctl);
3800 CERROR("getquota on mdt %d failed. %d\n",
3801 tgt->ltd_index, err);
3805 curspace += oqctl->qc_dqblk.dqb_curspace;
3806 curinodes += oqctl->qc_dqblk.dqb_curinodes;
3809 oqctl->qc_dqblk.dqb_curspace = curspace;
3810 oqctl->qc_dqblk.dqb_curinodes = curinodes;
3815 static int lmv_merge_attr(struct obd_export *exp,
3816 const struct lmv_stripe_md *lsm,
3817 struct cl_attr *attr,
3818 ldlm_blocking_callback cb_blocking)
3823 if (!lmv_dir_striped(lsm))
3826 rc = lmv_revalidate_slaves(exp, lsm, cb_blocking, 0);
3830 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
3831 struct inode *inode = lsm->lsm_md_oinfo[i].lmo_root;
3837 "" DFID " size %llu, blocks %llu nlink %u, atime %lld ctime %lld, mtime %lld.\n",
3838 PFID(&lsm->lsm_md_oinfo[i].lmo_fid),
3839 i_size_read(inode), (unsigned long long)inode->i_blocks,
3840 inode->i_nlink, (s64)inode->i_atime.tv_sec,
3841 (s64)inode->i_ctime.tv_sec, (s64)inode->i_mtime.tv_sec);
3843 /* for slave stripe, it needs to subtract nlink for . and .. */
3845 attr->cat_nlink += inode->i_nlink - 2;
3847 attr->cat_nlink = inode->i_nlink;
3849 attr->cat_size += i_size_read(inode);
3850 attr->cat_blocks += inode->i_blocks;
3852 if (attr->cat_atime < inode->i_atime.tv_sec)
3853 attr->cat_atime = inode->i_atime.tv_sec;
3855 if (attr->cat_ctime < inode->i_ctime.tv_sec)
3856 attr->cat_ctime = inode->i_ctime.tv_sec;
3858 if (attr->cat_mtime < inode->i_mtime.tv_sec)
3859 attr->cat_mtime = inode->i_mtime.tv_sec;
3864 static const struct obd_ops lmv_obd_ops = {
3865 .o_owner = THIS_MODULE,
3866 .o_setup = lmv_setup,
3867 .o_cleanup = lmv_cleanup,
3868 .o_precleanup = lmv_precleanup,
3869 .o_process_config = lmv_process_config,
3870 .o_connect = lmv_connect,
3871 .o_disconnect = lmv_disconnect,
3872 .o_statfs = lmv_statfs,
3873 .o_get_info = lmv_get_info,
3874 .o_set_info_async = lmv_set_info_async,
3875 .o_notify = lmv_notify,
3876 .o_get_uuid = lmv_get_uuid,
3877 .o_fid_alloc = lmv_fid_alloc,
3878 .o_iocontrol = lmv_iocontrol,
3879 .o_quotactl = lmv_quotactl
3882 static const struct md_ops lmv_md_ops = {
3883 .m_get_root = lmv_get_root,
3884 .m_null_inode = lmv_null_inode,
3885 .m_close = lmv_close,
3886 .m_create = lmv_create,
3887 .m_enqueue = lmv_enqueue,
3888 .m_getattr = lmv_getattr,
3889 .m_getxattr = lmv_getxattr,
3890 .m_getattr_name = lmv_getattr_name,
3891 .m_intent_lock = lmv_intent_lock,
3893 .m_rename = lmv_rename,
3894 .m_setattr = lmv_setattr,
3895 .m_setxattr = lmv_setxattr,
3896 .m_fsync = lmv_fsync,
3897 .m_file_resync = lmv_file_resync,
3898 .m_read_page = lmv_read_page,
3899 .m_unlink = lmv_unlink,
3900 .m_init_ea_size = lmv_init_ea_size,
3901 .m_cancel_unused = lmv_cancel_unused,
3902 .m_set_lock_data = lmv_set_lock_data,
3903 .m_lock_match = lmv_lock_match,
3904 .m_get_lustre_md = lmv_get_lustre_md,
3905 .m_free_lustre_md = lmv_free_lustre_md,
3906 .m_merge_attr = lmv_merge_attr,
3907 .m_set_open_replay_data = lmv_set_open_replay_data,
3908 .m_clear_open_replay_data = lmv_clear_open_replay_data,
3909 .m_intent_getattr_async = lmv_intent_getattr_async,
3910 .m_revalidate_lock = lmv_revalidate_lock,
3911 .m_get_fid_from_lsm = lmv_get_fid_from_lsm,
3912 .m_unpackmd = lmv_unpackmd,
3913 .m_rmfid = lmv_rmfid,
3916 static int __init lmv_init(void)
3918 return class_register_type(&lmv_obd_ops, &lmv_md_ops, true,
3919 LUSTRE_LMV_NAME, NULL);
3922 static void __exit lmv_exit(void)
3924 class_unregister_type(LUSTRE_LMV_NAME);
3927 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
3928 MODULE_DESCRIPTION("Lustre Logical Metadata Volume");
3929 MODULE_VERSION(LUSTRE_VERSION_STRING);
3930 MODULE_LICENSE("GPL");
3932 module_init(lmv_init);
3933 module_exit(lmv_exit);