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/
30 * Lustre is a trademark of Sun Microsystems, Inc.
33 #define DEBUG_SUBSYSTEM S_LMV
35 #include <linux/file.h>
36 #include <linux/module.h>
37 #include <linux/init.h>
38 #include <linux/user_namespace.h>
39 #ifdef HAVE_UIDGID_HEADER
40 # include <linux/uidgid.h>
42 #include <linux/slab.h>
43 #include <linux/pagemap.h>
45 #include <linux/math64.h>
46 #include <linux/seq_file.h>
47 #include <linux/namei.h>
49 #include <obd_support.h>
50 #include <lustre_lib.h>
51 #include <lustre_net.h>
52 #include <obd_class.h>
53 #include <lustre_lmv.h>
54 #include <lprocfs_status.h>
55 #include <cl_object.h>
56 #include <lustre_fid.h>
57 #include <uapi/linux/lustre/lustre_ioctl.h>
58 #include <lustre_kernelcomm.h>
59 #include "lmv_internal.h"
61 static int lmv_check_connect(struct obd_device *obd);
63 static void lmv_activate_target(struct lmv_obd *lmv,
64 struct lmv_tgt_desc *tgt,
67 if (tgt->ltd_active == activate)
70 tgt->ltd_active = activate;
71 lmv->desc.ld_active_tgt_count += (activate ? 1 : -1);
73 tgt->ltd_exp->exp_obd->obd_inactive = !activate;
79 * -EINVAL : UUID can't be found in the LMV's target list
80 * -ENOTCONN: The UUID is found, but the target connection is bad (!)
81 * -EBADF : The UUID is found, but the OBD of the wrong type (!)
83 static int lmv_set_mdc_active(struct lmv_obd *lmv,
84 const struct obd_uuid *uuid,
87 struct lmv_tgt_desc *tgt = NULL;
88 struct obd_device *obd;
93 CDEBUG(D_INFO, "Searching in lmv %p for uuid %s (activate=%d)\n",
94 lmv, uuid->uuid, activate);
96 spin_lock(&lmv->lmv_lock);
97 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
99 if (tgt == NULL || tgt->ltd_exp == NULL)
102 CDEBUG(D_INFO, "Target idx %d is %s conn %#llx\n", i,
103 tgt->ltd_uuid.uuid, tgt->ltd_exp->exp_handle.h_cookie);
105 if (obd_uuid_equals(uuid, &tgt->ltd_uuid))
109 if (i == lmv->desc.ld_tgt_count)
110 GOTO(out_lmv_lock, rc = -EINVAL);
112 obd = class_exp2obd(tgt->ltd_exp);
114 GOTO(out_lmv_lock, rc = -ENOTCONN);
116 CDEBUG(D_INFO, "Found OBD %s=%s device %d (%p) type %s at LMV idx %d\n",
117 obd->obd_name, obd->obd_uuid.uuid, obd->obd_minor, obd,
118 obd->obd_type->typ_name, i);
119 LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) == 0);
121 if (tgt->ltd_active == activate) {
122 CDEBUG(D_INFO, "OBD %p already %sactive!\n", obd,
123 activate ? "" : "in");
124 GOTO(out_lmv_lock, rc);
127 CDEBUG(D_INFO, "Marking OBD %p %sactive\n", obd,
128 activate ? "" : "in");
129 lmv_activate_target(lmv, tgt, activate);
133 spin_unlock(&lmv->lmv_lock);
137 struct obd_uuid *lmv_get_uuid(struct obd_export *exp)
139 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
140 struct lmv_tgt_desc *tgt = lmv->tgts[0];
142 return (tgt == NULL) ? NULL : obd_get_uuid(tgt->ltd_exp);
145 static int lmv_notify(struct obd_device *obd, struct obd_device *watched,
146 enum obd_notify_event ev)
148 struct obd_connect_data *conn_data;
149 struct lmv_obd *lmv = &obd->u.lmv;
150 struct obd_uuid *uuid;
154 if (strcmp(watched->obd_type->typ_name, LUSTRE_MDC_NAME)) {
155 CERROR("unexpected notification of %s %s!\n",
156 watched->obd_type->typ_name,
161 uuid = &watched->u.cli.cl_target_uuid;
162 if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE) {
164 * Set MDC as active before notifying the observer, so the
165 * observer can use the MDC normally.
167 rc = lmv_set_mdc_active(lmv, uuid,
168 ev == OBD_NOTIFY_ACTIVE);
170 CERROR("%sactivation of %s failed: %d\n",
171 ev == OBD_NOTIFY_ACTIVE ? "" : "de",
175 } else if (ev == OBD_NOTIFY_OCD) {
176 conn_data = &watched->u.cli.cl_import->imp_connect_data;
178 * XXX: Make sure that ocd_connect_flags from all targets are
179 * the same. Otherwise one of MDTs runs wrong version or
180 * something like this. --umka
182 obd->obd_self_export->exp_connect_data = *conn_data;
186 * Pass the notification up the chain.
188 if (obd->obd_observer)
189 rc = obd_notify(obd->obd_observer, watched, ev);
194 static int lmv_connect(const struct lu_env *env,
195 struct obd_export **pexp, struct obd_device *obd,
196 struct obd_uuid *cluuid, struct obd_connect_data *data,
199 struct lmv_obd *lmv = &obd->u.lmv;
200 struct lustre_handle conn = { 0 };
201 struct obd_export *exp;
205 rc = class_connect(&conn, obd, cluuid);
207 CERROR("class_connection() returned %d\n", rc);
211 exp = class_conn2export(&conn);
214 lmv->conn_data = *data;
216 lmv->lmv_tgts_kobj = kobject_create_and_add("target_obds",
217 &obd->obd_kset.kobj);
218 if (!lmv->lmv_tgts_kobj) {
219 CERROR("%s: cannot create /sys/fs/lustre/%s/%s/target_obds\n",
220 obd->obd_name, obd->obd_type->typ_name, obd->obd_name);
223 rc = lmv_check_connect(obd);
232 if (lmv->lmv_tgts_kobj)
233 kobject_put(lmv->lmv_tgts_kobj);
235 class_disconnect(exp);
240 static int lmv_init_ea_size(struct obd_export *exp, __u32 easize,
243 struct obd_device *obd = exp->exp_obd;
244 struct lmv_obd *lmv = &obd->u.lmv;
250 if (lmv->max_easize < easize) {
251 lmv->max_easize = easize;
254 if (lmv->max_def_easize < def_easize) {
255 lmv->max_def_easize = def_easize;
262 if (lmv->connected == 0)
265 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
266 struct lmv_tgt_desc *tgt = lmv->tgts[i];
268 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active) {
269 CWARN("%s: NULL export for %d\n", obd->obd_name, i);
273 rc = md_init_ea_size(tgt->ltd_exp, easize, def_easize);
275 CERROR("%s: obd_init_ea_size() failed on MDT target %d:"
276 " rc = %d\n", obd->obd_name, i, rc);
283 #define MAX_STRING_SIZE 128
285 int lmv_connect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
287 struct lmv_obd *lmv = &obd->u.lmv;
288 struct obd_device *mdc_obd;
289 struct obd_export *mdc_exp;
290 struct lu_fld_target target;
294 mdc_obd = class_find_client_obd(&tgt->ltd_uuid, LUSTRE_MDC_NAME,
297 CERROR("target %s not attached\n", tgt->ltd_uuid.uuid);
301 CDEBUG(D_CONFIG, "connect to %s(%s) - %s, %s\n",
302 mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
303 tgt->ltd_uuid.uuid, obd->obd_uuid.uuid);
305 if (!mdc_obd->obd_set_up) {
306 CERROR("target %s is not set up\n", tgt->ltd_uuid.uuid);
310 rc = obd_connect(NULL, &mdc_exp, mdc_obd, &obd->obd_uuid,
311 &lmv->conn_data, NULL);
313 CERROR("target %s connect error %d\n", tgt->ltd_uuid.uuid, rc);
318 * Init fid sequence client for this mdc and add new fld target.
320 rc = obd_fid_init(mdc_obd, mdc_exp, LUSTRE_SEQ_METADATA);
324 target.ft_srv = NULL;
325 target.ft_exp = mdc_exp;
326 target.ft_idx = tgt->ltd_idx;
328 fld_client_add_target(&lmv->lmv_fld, &target);
330 rc = obd_register_observer(mdc_obd, obd);
332 obd_disconnect(mdc_exp);
333 CERROR("target %s register_observer error %d\n",
334 tgt->ltd_uuid.uuid, rc);
338 if (obd->obd_observer) {
340 * Tell the observer about the new target.
342 rc = obd_notify(obd->obd_observer, mdc_exp->exp_obd,
345 obd_disconnect(mdc_exp);
351 tgt->ltd_exp = mdc_exp;
352 lmv->desc.ld_active_tgt_count++;
354 md_init_ea_size(tgt->ltd_exp, lmv->max_easize, lmv->max_def_easize);
356 CDEBUG(D_CONFIG, "Connected to %s(%s) successfully (%d)\n",
357 mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
358 atomic_read(&obd->obd_refcount));
360 if (lmv->lmv_tgts_kobj)
361 /* Even if we failed to create the link, that's fine */
362 rc = sysfs_create_link(lmv->lmv_tgts_kobj,
363 &mdc_obd->obd_kset.kobj,
368 static void lmv_del_target(struct lmv_obd *lmv, int index)
370 if (lmv->tgts[index] == NULL)
373 OBD_FREE_PTR(lmv->tgts[index]);
374 lmv->tgts[index] = NULL;
378 static int lmv_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
379 __u32 index, int gen)
381 struct obd_device *mdc_obd;
382 struct lmv_obd *lmv = &obd->u.lmv;
383 struct lmv_tgt_desc *tgt;
384 int orig_tgt_count = 0;
388 CDEBUG(D_CONFIG, "Target uuid: %s. index %d\n", uuidp->uuid, index);
389 mdc_obd = class_find_client_obd(uuidp, LUSTRE_MDC_NAME,
392 CERROR("%s: Target %s not attached: rc = %d\n",
393 obd->obd_name, uuidp->uuid, -EINVAL);
397 mutex_lock(&lmv->lmv_init_mutex);
398 if ((index < lmv->tgts_size) && (lmv->tgts[index] != NULL)) {
399 tgt = lmv->tgts[index];
400 CERROR("%s: UUID %s already assigned at LMV target index %d:"
401 " rc = %d\n", obd->obd_name,
402 obd_uuid2str(&tgt->ltd_uuid), index, -EEXIST);
403 mutex_unlock(&lmv->lmv_init_mutex);
407 if (index >= lmv->tgts_size) {
408 /* We need to reallocate the lmv target array. */
409 struct lmv_tgt_desc **newtgts, **old = NULL;
413 while (newsize < index + 1)
414 newsize = newsize << 1;
415 OBD_ALLOC(newtgts, sizeof(*newtgts) * newsize);
416 if (newtgts == NULL) {
417 mutex_unlock(&lmv->lmv_init_mutex);
421 if (lmv->tgts_size) {
422 memcpy(newtgts, lmv->tgts,
423 sizeof(*newtgts) * lmv->tgts_size);
425 oldsize = lmv->tgts_size;
429 lmv->tgts_size = newsize;
432 OBD_FREE(old, sizeof(*old) * oldsize);
434 CDEBUG(D_CONFIG, "tgts: %p size: %d\n", lmv->tgts,
440 mutex_unlock(&lmv->lmv_init_mutex);
444 mutex_init(&tgt->ltd_fid_mutex);
445 tgt->ltd_idx = index;
446 tgt->ltd_uuid = *uuidp;
448 lmv->tgts[index] = tgt;
449 if (index >= lmv->desc.ld_tgt_count) {
450 orig_tgt_count = lmv->desc.ld_tgt_count;
451 lmv->desc.ld_tgt_count = index + 1;
454 if (lmv->connected == 0) {
455 /* lmv_check_connect() will connect this target. */
456 mutex_unlock(&lmv->lmv_init_mutex);
460 /* Otherwise let's connect it ourselves */
461 mutex_unlock(&lmv->lmv_init_mutex);
462 rc = lmv_connect_mdc(obd, tgt);
464 spin_lock(&lmv->lmv_lock);
465 if (lmv->desc.ld_tgt_count == index + 1)
466 lmv->desc.ld_tgt_count = orig_tgt_count;
467 memset(tgt, 0, sizeof(*tgt));
468 spin_unlock(&lmv->lmv_lock);
470 int easize = sizeof(struct lmv_stripe_md) +
471 lmv->desc.ld_tgt_count * sizeof(struct lu_fid);
472 lmv_init_ea_size(obd->obd_self_export, easize, 0);
478 static int lmv_check_connect(struct obd_device *obd)
480 struct lmv_obd *lmv = &obd->u.lmv;
481 struct lmv_tgt_desc *tgt;
490 mutex_lock(&lmv->lmv_init_mutex);
491 if (lmv->connected) {
492 mutex_unlock(&lmv->lmv_init_mutex);
496 if (lmv->desc.ld_tgt_count == 0) {
497 mutex_unlock(&lmv->lmv_init_mutex);
498 CERROR("%s: no targets configured.\n", obd->obd_name);
502 LASSERT(lmv->tgts != NULL);
504 if (lmv->tgts[0] == NULL) {
505 mutex_unlock(&lmv->lmv_init_mutex);
506 CERROR("%s: no target configured for index 0.\n",
511 CDEBUG(D_CONFIG, "Time to connect %s to %s\n",
512 obd->obd_uuid.uuid, obd->obd_name);
514 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
518 rc = lmv_connect_mdc(obd, tgt);
524 easize = lmv_mds_md_size(lmv->desc.ld_tgt_count, LMV_MAGIC);
525 lmv_init_ea_size(obd->obd_self_export, easize, 0);
526 mutex_unlock(&lmv->lmv_init_mutex);
537 --lmv->desc.ld_active_tgt_count;
538 rc2 = obd_disconnect(tgt->ltd_exp);
540 CERROR("LMV target %s disconnect on "
541 "MDC idx %d: error %d\n",
542 tgt->ltd_uuid.uuid, i, rc2);
547 mutex_unlock(&lmv->lmv_init_mutex);
552 static int lmv_disconnect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
554 struct lmv_obd *lmv = &obd->u.lmv;
555 struct obd_device *mdc_obd;
559 LASSERT(tgt != NULL);
560 LASSERT(obd != NULL);
562 mdc_obd = class_exp2obd(tgt->ltd_exp);
565 mdc_obd->obd_force = obd->obd_force;
566 mdc_obd->obd_fail = obd->obd_fail;
567 mdc_obd->obd_no_recov = obd->obd_no_recov;
569 if (lmv->lmv_tgts_kobj)
570 sysfs_remove_link(lmv->lmv_tgts_kobj,
574 rc = obd_fid_fini(tgt->ltd_exp->exp_obd);
576 CERROR("Can't finanize fids factory\n");
578 CDEBUG(D_INFO, "Disconnected from %s(%s) successfully\n",
579 tgt->ltd_exp->exp_obd->obd_name,
580 tgt->ltd_exp->exp_obd->obd_uuid.uuid);
582 obd_register_observer(tgt->ltd_exp->exp_obd, NULL);
583 rc = obd_disconnect(tgt->ltd_exp);
585 if (tgt->ltd_active) {
586 CERROR("Target %s disconnect error %d\n",
587 tgt->ltd_uuid.uuid, rc);
591 lmv_activate_target(lmv, tgt, 0);
596 static int lmv_disconnect(struct obd_export *exp)
598 struct obd_device *obd = class_exp2obd(exp);
599 struct lmv_obd *lmv = &obd->u.lmv;
607 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
608 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
611 lmv_disconnect_mdc(obd, lmv->tgts[i]);
614 if (lmv->lmv_tgts_kobj)
615 kobject_put(lmv->lmv_tgts_kobj);
619 * This is the case when no real connection is established by
620 * lmv_check_connect().
623 class_export_put(exp);
624 rc = class_disconnect(exp);
630 static int lmv_fid2path(struct obd_export *exp, int len, void *karg,
633 struct obd_device *obddev = class_exp2obd(exp);
634 struct lmv_obd *lmv = &obddev->u.lmv;
635 struct getinfo_fid2path *gf;
636 struct lmv_tgt_desc *tgt;
637 struct getinfo_fid2path *remote_gf = NULL;
638 struct lu_fid root_fid;
639 int remote_gf_size = 0;
643 tgt = lmv_find_target(lmv, &gf->gf_fid);
645 RETURN(PTR_ERR(tgt));
647 root_fid = *gf->gf_u.gf_root_fid;
648 LASSERT(fid_is_sane(&root_fid));
651 rc = obd_iocontrol(OBD_IOC_FID2PATH, tgt->ltd_exp, len, gf, uarg);
652 if (rc != 0 && rc != -EREMOTE)
653 GOTO(out_fid2path, rc);
655 /* If remote_gf != NULL, it means just building the
656 * path on the remote MDT, copy this path segement to gf */
657 if (remote_gf != NULL) {
658 struct getinfo_fid2path *ori_gf;
661 ori_gf = (struct getinfo_fid2path *)karg;
662 if (strlen(ori_gf->gf_u.gf_path) + 1 +
663 strlen(gf->gf_u.gf_path) + 1 > ori_gf->gf_pathlen)
664 GOTO(out_fid2path, rc = -EOVERFLOW);
666 ptr = ori_gf->gf_u.gf_path;
668 memmove(ptr + strlen(gf->gf_u.gf_path) + 1, ptr,
669 strlen(ori_gf->gf_u.gf_path));
671 strncpy(ptr, gf->gf_u.gf_path,
672 strlen(gf->gf_u.gf_path));
673 ptr += strlen(gf->gf_u.gf_path);
677 CDEBUG(D_INFO, "%s: get path %s "DFID" rec: %llu ln: %u\n",
678 tgt->ltd_exp->exp_obd->obd_name,
679 gf->gf_u.gf_path, PFID(&gf->gf_fid), gf->gf_recno,
683 GOTO(out_fid2path, rc);
685 /* sigh, has to go to another MDT to do path building further */
686 if (remote_gf == NULL) {
687 remote_gf_size = sizeof(*remote_gf) + PATH_MAX;
688 OBD_ALLOC(remote_gf, remote_gf_size);
689 if (remote_gf == NULL)
690 GOTO(out_fid2path, rc = -ENOMEM);
691 remote_gf->gf_pathlen = PATH_MAX;
694 if (!fid_is_sane(&gf->gf_fid)) {
695 CERROR("%s: invalid FID "DFID": rc = %d\n",
696 tgt->ltd_exp->exp_obd->obd_name,
697 PFID(&gf->gf_fid), -EINVAL);
698 GOTO(out_fid2path, rc = -EINVAL);
701 tgt = lmv_find_target(lmv, &gf->gf_fid);
703 GOTO(out_fid2path, rc = -EINVAL);
705 remote_gf->gf_fid = gf->gf_fid;
706 remote_gf->gf_recno = -1;
707 remote_gf->gf_linkno = -1;
708 memset(remote_gf->gf_u.gf_path, 0, remote_gf->gf_pathlen);
709 *remote_gf->gf_u.gf_root_fid = root_fid;
711 goto repeat_fid2path;
714 if (remote_gf != NULL)
715 OBD_FREE(remote_gf, remote_gf_size);
719 static int lmv_hsm_req_count(struct lmv_obd *lmv,
720 const struct hsm_user_request *hur,
721 const struct lmv_tgt_desc *tgt_mds)
725 struct lmv_tgt_desc *curr_tgt;
727 /* count how many requests must be sent to the given target */
728 for (i = 0; i < hur->hur_request.hr_itemcount; i++) {
729 curr_tgt = lmv_find_target(lmv, &hur->hur_user_item[i].hui_fid);
730 if (IS_ERR(curr_tgt))
731 RETURN(PTR_ERR(curr_tgt));
732 if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid))
738 static int lmv_hsm_req_build(struct lmv_obd *lmv,
739 struct hsm_user_request *hur_in,
740 const struct lmv_tgt_desc *tgt_mds,
741 struct hsm_user_request *hur_out)
744 struct lmv_tgt_desc *curr_tgt;
746 /* build the hsm_user_request for the given target */
747 hur_out->hur_request = hur_in->hur_request;
749 for (i = 0; i < hur_in->hur_request.hr_itemcount; i++) {
750 curr_tgt = lmv_find_target(lmv,
751 &hur_in->hur_user_item[i].hui_fid);
752 if (IS_ERR(curr_tgt))
753 RETURN(PTR_ERR(curr_tgt));
754 if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid)) {
755 hur_out->hur_user_item[nr_out] =
756 hur_in->hur_user_item[i];
760 hur_out->hur_request.hr_itemcount = nr_out;
761 memcpy(hur_data(hur_out), hur_data(hur_in),
762 hur_in->hur_request.hr_data_len);
767 static int lmv_hsm_ct_unregister(struct obd_device *obd, unsigned int cmd,
768 int len, struct lustre_kernelcomm *lk,
771 struct lmv_obd *lmv = &obd->u.lmv;
776 /* unregister request (call from llapi_hsm_copytool_fini) */
777 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
778 struct lmv_tgt_desc *tgt = lmv->tgts[i];
780 if (tgt == NULL || tgt->ltd_exp == NULL)
782 /* best effort: try to clean as much as possible
783 * (continue on error) */
784 obd_iocontrol(cmd, tgt->ltd_exp, len, lk, uarg);
787 /* Whatever the result, remove copytool from kuc groups.
788 * Unreached coordinators will get EPIPE on next requests
789 * and will unregister automatically.
791 rc = libcfs_kkuc_group_rem(&obd->obd_uuid, lk->lk_uid, lk->lk_group);
796 static int lmv_hsm_ct_register(struct obd_device *obd, unsigned int cmd,
797 int len, struct lustre_kernelcomm *lk,
800 struct lmv_obd *lmv = &obd->u.lmv;
804 bool any_set = false;
805 struct kkuc_ct_data kcd = {
806 .kcd_magic = KKUC_CT_DATA_MAGIC,
807 .kcd_archive = lk->lk_data,
812 filp = fget(lk->lk_wfd);
816 rc = libcfs_kkuc_group_add(filp, &obd->obd_uuid, lk->lk_uid,
817 lk->lk_group, &kcd, sizeof(kcd));
821 /* All or nothing: try to register to all MDS.
822 * In case of failure, unregister from previous MDS,
823 * except if it because of inactive target. */
824 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
825 struct lmv_tgt_desc *tgt = lmv->tgts[i];
827 if (tgt == NULL || tgt->ltd_exp == NULL)
830 err = obd_iocontrol(cmd, tgt->ltd_exp, len, lk, uarg);
832 if (tgt->ltd_active) {
833 /* permanent error */
834 CERROR("%s: iocontrol MDC %s on MDT"
835 " idx %d cmd %x: err = %d\n",
836 lmv2obd_dev(lmv)->obd_name,
837 tgt->ltd_uuid.uuid, i, cmd, err);
839 lk->lk_flags |= LK_FLG_STOP;
840 /* unregister from previous MDS */
841 for (j = 0; j < i; j++) {
843 if (tgt == NULL || tgt->ltd_exp == NULL)
845 obd_iocontrol(cmd, tgt->ltd_exp, len,
848 GOTO(err_kkuc_rem, rc);
850 /* else: transient error.
851 * kuc will register to the missing MDT
859 /* no registration done: return error */
860 GOTO(err_kkuc_rem, rc = -ENOTCONN);
865 libcfs_kkuc_group_rem(&obd->obd_uuid, lk->lk_uid, lk->lk_group);
875 static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp,
876 int len, void *karg, void __user *uarg)
878 struct obd_device *obddev = class_exp2obd(exp);
879 struct lmv_obd *lmv = &obddev->u.lmv;
880 struct lmv_tgt_desc *tgt = NULL;
884 __u32 count = lmv->desc.ld_tgt_count;
891 case IOC_OBD_STATFS: {
892 struct obd_ioctl_data *data = karg;
893 struct obd_device *mdc_obd;
894 struct obd_statfs stat_buf = {0};
897 memcpy(&index, data->ioc_inlbuf2, sizeof(__u32));
898 if ((index >= count))
901 tgt = lmv->tgts[index];
902 if (tgt == NULL || !tgt->ltd_active)
905 mdc_obd = class_exp2obd(tgt->ltd_exp);
910 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(mdc_obd),
911 min((int) data->ioc_plen2,
912 (int) sizeof(struct obd_uuid))))
915 rc = obd_statfs(NULL, tgt->ltd_exp, &stat_buf,
916 ktime_get_seconds() - OBD_STATFS_CACHE_SECONDS,
920 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
921 min((int) data->ioc_plen1,
922 (int) sizeof(stat_buf))))
926 case OBD_IOC_QUOTACTL: {
927 struct if_quotactl *qctl = karg;
928 struct obd_quotactl *oqctl;
930 if (qctl->qc_valid == QC_MDTIDX) {
931 if (count <= qctl->qc_idx)
934 tgt = lmv->tgts[qctl->qc_idx];
935 if (tgt == NULL || tgt->ltd_exp == NULL)
937 } else if (qctl->qc_valid == QC_UUID) {
938 for (i = 0; i < count; i++) {
942 if (!obd_uuid_equals(&tgt->ltd_uuid,
946 if (tgt->ltd_exp == NULL)
958 LASSERT(tgt != NULL && tgt->ltd_exp != NULL);
959 OBD_ALLOC_PTR(oqctl);
963 QCTL_COPY(oqctl, qctl);
964 rc = obd_quotactl(tgt->ltd_exp, oqctl);
966 QCTL_COPY(qctl, oqctl);
967 qctl->qc_valid = QC_MDTIDX;
968 qctl->obd_uuid = tgt->ltd_uuid;
973 case LL_IOC_GET_CONNECT_FLAGS: {
975 if (tgt == NULL || tgt->ltd_exp == NULL)
977 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
980 case LL_IOC_FID2MDTIDX: {
981 struct lu_fid *fid = karg;
984 rc = lmv_fld_lookup(lmv, fid, &mdt_index);
988 /* Note: this is from llite(see ll_dir_ioctl()), @uarg does not
989 * point to user space memory for FID2MDTIDX. */
990 *(__u32 *)uarg = mdt_index;
993 case OBD_IOC_FID2PATH: {
994 rc = lmv_fid2path(exp, len, karg, uarg);
997 case LL_IOC_HSM_STATE_GET:
998 case LL_IOC_HSM_STATE_SET:
999 case LL_IOC_HSM_ACTION: {
1000 struct md_op_data *op_data = karg;
1002 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1004 RETURN(PTR_ERR(tgt));
1006 if (tgt->ltd_exp == NULL)
1009 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1012 case LL_IOC_HSM_PROGRESS: {
1013 const struct hsm_progress_kernel *hpk = karg;
1015 tgt = lmv_find_target(lmv, &hpk->hpk_fid);
1017 RETURN(PTR_ERR(tgt));
1018 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1021 case LL_IOC_HSM_REQUEST: {
1022 struct hsm_user_request *hur = karg;
1023 unsigned int reqcount = hur->hur_request.hr_itemcount;
1028 /* if the request is about a single fid
1029 * or if there is a single MDS, no need to split
1031 if (reqcount == 1 || count == 1) {
1032 tgt = lmv_find_target(lmv,
1033 &hur->hur_user_item[0].hui_fid);
1035 RETURN(PTR_ERR(tgt));
1036 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1038 /* split fid list to their respective MDS */
1039 for (i = 0; i < count; i++) {
1042 struct hsm_user_request *req;
1045 if (tgt == NULL || tgt->ltd_exp == NULL)
1048 nr = lmv_hsm_req_count(lmv, hur, tgt);
1051 if (nr == 0) /* nothing for this MDS */
1054 /* build a request with fids for this MDS */
1055 reqlen = offsetof(typeof(*hur),
1057 + hur->hur_request.hr_data_len;
1058 OBD_ALLOC_LARGE(req, reqlen);
1061 rc1 = lmv_hsm_req_build(lmv, hur, tgt, req);
1063 GOTO(hsm_req_err, rc1);
1064 rc1 = obd_iocontrol(cmd, tgt->ltd_exp, reqlen,
1067 if (rc1 != 0 && rc == 0)
1069 OBD_FREE_LARGE(req, reqlen);
1074 case LL_IOC_LOV_SWAP_LAYOUTS: {
1075 struct md_op_data *op_data = karg;
1076 struct lmv_tgt_desc *tgt1, *tgt2;
1078 tgt1 = lmv_find_target(lmv, &op_data->op_fid1);
1080 RETURN(PTR_ERR(tgt1));
1082 tgt2 = lmv_find_target(lmv, &op_data->op_fid2);
1084 RETURN(PTR_ERR(tgt2));
1086 if ((tgt1->ltd_exp == NULL) || (tgt2->ltd_exp == NULL))
1089 /* only files on same MDT can have their layouts swapped */
1090 if (tgt1->ltd_idx != tgt2->ltd_idx)
1093 rc = obd_iocontrol(cmd, tgt1->ltd_exp, len, karg, uarg);
1096 case LL_IOC_HSM_CT_START: {
1097 struct lustre_kernelcomm *lk = karg;
1098 if (lk->lk_flags & LK_FLG_STOP)
1099 rc = lmv_hsm_ct_unregister(obddev, cmd, len, lk, uarg);
1101 rc = lmv_hsm_ct_register(obddev, cmd, len, lk, uarg);
1105 for (i = 0; i < count; i++) {
1106 struct obd_device *mdc_obd;
1110 if (tgt == NULL || tgt->ltd_exp == NULL)
1112 /* ll_umount_begin() sets force flag but for lmv, not
1113 * mdc. Let's pass it through */
1114 mdc_obd = class_exp2obd(tgt->ltd_exp);
1115 mdc_obd->obd_force = obddev->obd_force;
1116 err = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1118 if (tgt->ltd_active) {
1119 CERROR("error: iocontrol MDC %s on MDT"
1120 " idx %d cmd %x: err = %d\n",
1121 tgt->ltd_uuid.uuid, i, cmd, err);
1135 * This is _inode_ placement policy function (not name).
1137 static int lmv_placement_policy(struct obd_device *obd,
1138 struct md_op_data *op_data, u32 *mds)
1140 struct lmv_obd *lmv = &obd->u.lmv;
1141 struct lmv_user_md *lum;
1145 LASSERT(mds != NULL);
1147 if (lmv->desc.ld_tgt_count == 1) {
1152 lum = op_data->op_data;
1154 * 1. See if the stripe offset is specified by lum.
1155 * 2. Then check if there is default stripe offset.
1156 * 3. Finally choose MDS by name hash if the parent
1157 * is striped directory. (see lmv_locate_mds()). */
1158 if (op_data->op_cli_flags & CLI_SET_MEA && lum != NULL &&
1159 le32_to_cpu(lum->lum_stripe_offset) != (__u32)-1) {
1160 *mds = le32_to_cpu(lum->lum_stripe_offset);
1161 } else if (op_data->op_default_stripe_offset != (__u32)-1) {
1162 *mds = op_data->op_default_stripe_offset;
1163 op_data->op_mds = *mds;
1164 /* Correct the stripe offset in lum */
1166 lum->lum_stripe_offset = cpu_to_le32(*mds);
1168 *mds = op_data->op_mds;
1174 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds)
1176 struct lmv_tgt_desc *tgt;
1180 tgt = lmv_get_target(lmv, mds, NULL);
1182 RETURN(PTR_ERR(tgt));
1185 * New seq alloc and FLD setup should be atomic. Otherwise we may find
1186 * on server that seq in new allocated fid is not yet known.
1188 mutex_lock(&tgt->ltd_fid_mutex);
1190 if (tgt->ltd_active == 0 || tgt->ltd_exp == NULL)
1191 GOTO(out, rc = -ENODEV);
1194 * Asking underlying tgt layer to allocate new fid.
1196 rc = obd_fid_alloc(NULL, tgt->ltd_exp, fid, NULL);
1198 LASSERT(fid_is_sane(fid));
1204 mutex_unlock(&tgt->ltd_fid_mutex);
1208 int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp,
1209 struct lu_fid *fid, struct md_op_data *op_data)
1211 struct obd_device *obd = class_exp2obd(exp);
1212 struct lmv_obd *lmv = &obd->u.lmv;
1217 LASSERT(op_data != NULL);
1218 LASSERT(fid != NULL);
1220 rc = lmv_placement_policy(obd, op_data, &mds);
1222 CERROR("Can't get target for allocating fid, "
1227 rc = __lmv_fid_alloc(lmv, fid, mds);
1229 CERROR("Can't alloc new fid, rc %d\n", rc);
1236 static int lmv_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
1238 struct lmv_obd *lmv = &obd->u.lmv;
1239 struct lmv_desc *desc;
1243 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
1244 CERROR("LMV setup requires a descriptor\n");
1248 desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1);
1249 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
1250 CERROR("Lmv descriptor size wrong: %d > %d\n",
1251 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
1255 lmv->tgts_size = 32U;
1256 OBD_ALLOC(lmv->tgts, sizeof(*lmv->tgts) * lmv->tgts_size);
1257 if (lmv->tgts == NULL)
1260 obd_str2uuid(&lmv->desc.ld_uuid, desc->ld_uuid.uuid);
1261 lmv->desc.ld_tgt_count = 0;
1262 lmv->desc.ld_active_tgt_count = 0;
1263 lmv->max_def_easize = 0;
1264 lmv->max_easize = 0;
1266 spin_lock_init(&lmv->lmv_lock);
1267 mutex_init(&lmv->lmv_init_mutex);
1269 rc = lmv_tunables_init(obd);
1271 CWARN("%s: error adding LMV sysfs/debugfs files: rc = %d\n",
1274 rc = fld_client_init(&lmv->lmv_fld, obd->obd_name,
1275 LUSTRE_CLI_FLD_HASH_DHT);
1277 CERROR("Can't init FLD, err %d\n", rc);
1287 static int lmv_cleanup(struct obd_device *obd)
1289 struct lmv_obd *lmv = &obd->u.lmv;
1292 fld_client_fini(&lmv->lmv_fld);
1293 if (lmv->tgts != NULL) {
1295 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1296 if (lmv->tgts[i] == NULL)
1298 lmv_del_target(lmv, i);
1300 OBD_FREE(lmv->tgts, sizeof(*lmv->tgts) * lmv->tgts_size);
1306 static int lmv_process_config(struct obd_device *obd, size_t len, void *buf)
1308 struct lustre_cfg *lcfg = buf;
1309 struct obd_uuid obd_uuid;
1315 switch (lcfg->lcfg_command) {
1317 /* modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDT0000_UUID
1318 * 2:0 3:1 4:lustre-MDT0000-mdc_UUID */
1319 if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid))
1320 GOTO(out, rc = -EINVAL);
1322 obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1));
1324 if (sscanf(lustre_cfg_buf(lcfg, 2), "%u", &index) != 1)
1325 GOTO(out, rc = -EINVAL);
1326 if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", &gen) != 1)
1327 GOTO(out, rc = -EINVAL);
1328 rc = lmv_add_target(obd, &obd_uuid, index, gen);
1331 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1332 GOTO(out, rc = -EINVAL);
1338 static int lmv_statfs(const struct lu_env *env, struct obd_export *exp,
1339 struct obd_statfs *osfs, time64_t max_age, __u32 flags)
1341 struct obd_device *obd = class_exp2obd(exp);
1342 struct lmv_obd *lmv = &obd->u.lmv;
1343 struct obd_statfs *temp;
1348 OBD_ALLOC(temp, sizeof(*temp));
1352 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1353 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1356 rc = obd_statfs(env, lmv->tgts[i]->ltd_exp, temp,
1359 CERROR("can't stat MDS #%d (%s), error %d\n", i,
1360 lmv->tgts[i]->ltd_exp->exp_obd->obd_name,
1362 GOTO(out_free_temp, rc);
1367 /* If the statfs is from mount, it will needs
1368 * retrieve necessary information from MDT0.
1369 * i.e. mount does not need the merged osfs
1371 * And also clients can be mounted as long as
1372 * MDT0 is in service*/
1373 if (flags & OBD_STATFS_FOR_MDT0)
1374 GOTO(out_free_temp, rc);
1376 osfs->os_bavail += temp->os_bavail;
1377 osfs->os_blocks += temp->os_blocks;
1378 osfs->os_ffree += temp->os_ffree;
1379 osfs->os_files += temp->os_files;
1385 OBD_FREE(temp, sizeof(*temp));
1389 static int lmv_get_root(struct obd_export *exp, const char *fileset,
1392 struct obd_device *obd = exp->exp_obd;
1393 struct lmv_obd *lmv = &obd->u.lmv;
1397 rc = md_get_root(lmv->tgts[0]->ltd_exp, fileset, fid);
1401 static int lmv_getxattr(struct obd_export *exp, const struct lu_fid *fid,
1402 u64 obd_md_valid, const char *name, size_t buf_size,
1403 struct ptlrpc_request **req)
1405 struct obd_device *obd = exp->exp_obd;
1406 struct lmv_obd *lmv = &obd->u.lmv;
1407 struct lmv_tgt_desc *tgt;
1411 tgt = lmv_find_target(lmv, fid);
1413 RETURN(PTR_ERR(tgt));
1415 rc = md_getxattr(tgt->ltd_exp, fid, obd_md_valid, name, buf_size, req);
1420 static int lmv_setxattr(struct obd_export *exp, const struct lu_fid *fid,
1421 u64 obd_md_valid, const char *name,
1422 const void *value, size_t value_size,
1423 unsigned int xattr_flags, u32 suppgid,
1424 struct ptlrpc_request **req)
1426 struct obd_device *obd = exp->exp_obd;
1427 struct lmv_obd *lmv = &obd->u.lmv;
1428 struct lmv_tgt_desc *tgt;
1432 tgt = lmv_find_target(lmv, fid);
1434 RETURN(PTR_ERR(tgt));
1436 rc = md_setxattr(tgt->ltd_exp, fid, obd_md_valid, name,
1437 value, value_size, xattr_flags, suppgid, req);
1442 static int lmv_getattr(struct obd_export *exp, struct md_op_data *op_data,
1443 struct ptlrpc_request **request)
1445 struct obd_device *obd = exp->exp_obd;
1446 struct lmv_obd *lmv = &obd->u.lmv;
1447 struct lmv_tgt_desc *tgt;
1451 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1453 RETURN(PTR_ERR(tgt));
1455 if (op_data->op_flags & MF_GET_MDT_IDX) {
1456 op_data->op_mds = tgt->ltd_idx;
1460 rc = md_getattr(tgt->ltd_exp, op_data, request);
1465 static int lmv_null_inode(struct obd_export *exp, const struct lu_fid *fid)
1467 struct obd_device *obd = exp->exp_obd;
1468 struct lmv_obd *lmv = &obd->u.lmv;
1472 CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid));
1475 * With DNE every object can have two locks in different namespaces:
1476 * lookup lock in space of MDT storing direntry and update/open lock in
1477 * space of MDT storing inode.
1479 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1480 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1482 md_null_inode(lmv->tgts[i]->ltd_exp, fid);
1488 static int lmv_close(struct obd_export *exp, struct md_op_data *op_data,
1489 struct md_open_data *mod, struct ptlrpc_request **request)
1491 struct obd_device *obd = exp->exp_obd;
1492 struct lmv_obd *lmv = &obd->u.lmv;
1493 struct lmv_tgt_desc *tgt;
1497 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1499 RETURN(PTR_ERR(tgt));
1501 CDEBUG(D_INODE, "CLOSE "DFID"\n", PFID(&op_data->op_fid1));
1502 rc = md_close(tgt->ltd_exp, op_data, mod, request);
1507 * Choosing the MDT by name or FID in @op_data.
1508 * For non-striped directory, it will locate MDT by fid.
1509 * For striped-directory, it will locate MDT by name. And also
1510 * it will reset op_fid1 with the FID of the choosen stripe.
1512 struct lmv_tgt_desc *
1513 lmv_locate_target_for_name(struct lmv_obd *lmv, struct lmv_stripe_md *lsm,
1514 const char *name, int namelen, struct lu_fid *fid,
1517 struct lmv_tgt_desc *tgt;
1518 const struct lmv_oinfo *oinfo;
1520 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_NAME_HASH)) {
1521 if (cfs_fail_val >= lsm->lsm_md_stripe_count)
1522 RETURN(ERR_PTR(-EBADF));
1523 oinfo = &lsm->lsm_md_oinfo[cfs_fail_val];
1525 oinfo = lsm_name_to_stripe_info(lsm, name, namelen);
1527 RETURN(ERR_CAST(oinfo));
1531 *fid = oinfo->lmo_fid;
1533 *mds = oinfo->lmo_mds;
1535 tgt = lmv_get_target(lmv, oinfo->lmo_mds, NULL);
1537 CDEBUG(D_INFO, "locate on mds %u "DFID"\n", oinfo->lmo_mds,
1538 PFID(&oinfo->lmo_fid));
1543 * Locate mds by fid or name
1545 * For striped directory (lsm != NULL), it will locate the stripe
1546 * by name hash (see lsm_name_to_stripe_info()). Note: if the hash_type
1547 * is unknown, it will return -EBADFD, and lmv_intent_lookup might need
1548 * walk through all of stripes to locate the entry.
1550 * For normal direcotry, it will locate MDS by FID directly.
1551 * \param[in] lmv LMV device
1552 * \param[in] op_data client MD stack parameters, name, namelen
1554 * \param[in] fid object FID used to locate MDS.
1556 * retval pointer to the lmv_tgt_desc if succeed.
1557 * ERR_PTR(errno) if failed.
1559 struct lmv_tgt_desc*
1560 lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
1563 struct lmv_stripe_md *lsm = op_data->op_mea1;
1564 struct lmv_tgt_desc *tgt;
1566 /* During creating VOLATILE file, it should honor the mdt
1567 * index if the file under striped dir is being restored, see
1569 if (op_data->op_bias & MDS_CREATE_VOLATILE &&
1570 (int)op_data->op_mds != -1) {
1572 tgt = lmv_get_target(lmv, op_data->op_mds, NULL);
1577 /* refill the right parent fid */
1578 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1579 struct lmv_oinfo *oinfo;
1581 oinfo = &lsm->lsm_md_oinfo[i];
1582 if (oinfo->lmo_mds == op_data->op_mds) {
1583 *fid = oinfo->lmo_fid;
1588 if (i == lsm->lsm_md_stripe_count)
1589 *fid = lsm->lsm_md_oinfo[0].lmo_fid;
1595 if (lsm == NULL || op_data->op_namelen == 0) {
1596 tgt = lmv_find_target(lmv, fid);
1600 op_data->op_mds = tgt->ltd_idx;
1604 return lmv_locate_target_for_name(lmv, lsm, op_data->op_name,
1605 op_data->op_namelen, fid,
1609 int lmv_create(struct obd_export *exp, struct md_op_data *op_data,
1610 const void *data, size_t datalen, umode_t mode, uid_t uid,
1611 gid_t gid, cfs_cap_t cap_effective, __u64 rdev,
1612 struct ptlrpc_request **request)
1614 struct obd_device *obd = exp->exp_obd;
1615 struct lmv_obd *lmv = &obd->u.lmv;
1616 struct lmv_tgt_desc *tgt;
1620 if (!lmv->desc.ld_active_tgt_count)
1623 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1625 RETURN(PTR_ERR(tgt));
1627 CDEBUG(D_INODE, "CREATE name '%.*s' on "DFID" -> mds #%x\n",
1628 (int)op_data->op_namelen, op_data->op_name,
1629 PFID(&op_data->op_fid1), op_data->op_mds);
1631 rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
1634 if (exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE) {
1635 /* Send the create request to the MDT where the object
1636 * will be located */
1637 tgt = lmv_find_target(lmv, &op_data->op_fid2);
1639 RETURN(PTR_ERR(tgt));
1641 op_data->op_mds = tgt->ltd_idx;
1643 CDEBUG(D_CONFIG, "Server doesn't support striped dirs\n");
1646 CDEBUG(D_INODE, "CREATE obj "DFID" -> mds #%x\n",
1647 PFID(&op_data->op_fid2), op_data->op_mds);
1649 op_data->op_flags |= MF_MDC_CANCEL_FID1;
1650 rc = md_create(tgt->ltd_exp, op_data, data, datalen, mode, uid, gid,
1651 cap_effective, rdev, request);
1653 if (*request == NULL)
1655 CDEBUG(D_INODE, "Created - "DFID"\n", PFID(&op_data->op_fid2));
1661 lmv_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
1662 const union ldlm_policy_data *policy, struct md_op_data *op_data,
1663 struct lustre_handle *lockh, __u64 extra_lock_flags)
1665 struct obd_device *obd = exp->exp_obd;
1666 struct lmv_obd *lmv = &obd->u.lmv;
1667 struct lmv_tgt_desc *tgt;
1671 CDEBUG(D_INODE, "ENQUEUE on "DFID"\n", PFID(&op_data->op_fid1));
1673 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1675 RETURN(PTR_ERR(tgt));
1677 CDEBUG(D_INODE, "ENQUEUE on "DFID" -> mds #%u\n",
1678 PFID(&op_data->op_fid1), tgt->ltd_idx);
1680 rc = md_enqueue(tgt->ltd_exp, einfo, policy, op_data, lockh,
1687 lmv_getattr_name(struct obd_export *exp,struct md_op_data *op_data,
1688 struct ptlrpc_request **preq)
1690 struct ptlrpc_request *req = NULL;
1691 struct obd_device *obd = exp->exp_obd;
1692 struct lmv_obd *lmv = &obd->u.lmv;
1693 struct lmv_tgt_desc *tgt;
1694 struct mdt_body *body;
1698 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1700 RETURN(PTR_ERR(tgt));
1702 CDEBUG(D_INODE, "GETATTR_NAME for %*s on "DFID" -> mds #%d\n",
1703 (int)op_data->op_namelen, op_data->op_name,
1704 PFID(&op_data->op_fid1), tgt->ltd_idx);
1706 rc = md_getattr_name(tgt->ltd_exp, op_data, preq);
1710 body = req_capsule_server_get(&(*preq)->rq_pill, &RMF_MDT_BODY);
1711 LASSERT(body != NULL);
1713 if (body->mbo_valid & OBD_MD_MDS) {
1714 struct lu_fid rid = body->mbo_fid1;
1715 CDEBUG(D_INODE, "Request attrs for "DFID"\n",
1718 tgt = lmv_find_target(lmv, &rid);
1720 ptlrpc_req_finished(*preq);
1722 RETURN(PTR_ERR(tgt));
1725 op_data->op_fid1 = rid;
1726 op_data->op_valid |= OBD_MD_FLCROSSREF;
1727 op_data->op_namelen = 0;
1728 op_data->op_name = NULL;
1729 rc = md_getattr_name(tgt->ltd_exp, op_data, &req);
1730 ptlrpc_req_finished(*preq);
1737 #define md_op_data_fid(op_data, fl) \
1738 (fl == MF_MDC_CANCEL_FID1 ? &op_data->op_fid1 : \
1739 fl == MF_MDC_CANCEL_FID2 ? &op_data->op_fid2 : \
1740 fl == MF_MDC_CANCEL_FID3 ? &op_data->op_fid3 : \
1741 fl == MF_MDC_CANCEL_FID4 ? &op_data->op_fid4 : \
1744 static int lmv_early_cancel(struct obd_export *exp, struct lmv_tgt_desc *tgt,
1745 struct md_op_data *op_data, __u32 op_tgt,
1746 enum ldlm_mode mode, int bits, int flag)
1748 struct lu_fid *fid = md_op_data_fid(op_data, flag);
1749 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
1750 union ldlm_policy_data policy = { { 0 } };
1754 if (!fid_is_sane(fid))
1758 tgt = lmv_find_target(lmv, fid);
1760 RETURN(PTR_ERR(tgt));
1763 if (tgt->ltd_idx != op_tgt) {
1764 CDEBUG(D_INODE, "EARLY_CANCEL on "DFID"\n", PFID(fid));
1765 policy.l_inodebits.bits = bits;
1766 rc = md_cancel_unused(tgt->ltd_exp, fid, &policy,
1767 mode, LCF_ASYNC, NULL);
1770 "EARLY_CANCEL skip operation target %d on "DFID"\n",
1772 op_data->op_flags |= flag;
1780 * llite passes fid of an target inode in op_data->op_fid1 and id of directory in
1783 static int lmv_link(struct obd_export *exp, struct md_op_data *op_data,
1784 struct ptlrpc_request **request)
1786 struct obd_device *obd = exp->exp_obd;
1787 struct lmv_obd *lmv = &obd->u.lmv;
1788 struct lmv_tgt_desc *tgt;
1792 LASSERT(op_data->op_namelen != 0);
1794 CDEBUG(D_INODE, "LINK "DFID":%*s to "DFID"\n",
1795 PFID(&op_data->op_fid2), (int)op_data->op_namelen,
1796 op_data->op_name, PFID(&op_data->op_fid1));
1798 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
1799 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
1800 op_data->op_cap = cfs_curproc_cap_pack();
1801 if (op_data->op_mea2 != NULL) {
1802 struct lmv_stripe_md *lsm = op_data->op_mea2;
1803 const struct lmv_oinfo *oinfo;
1805 oinfo = lsm_name_to_stripe_info(lsm, op_data->op_name,
1806 op_data->op_namelen);
1808 RETURN(PTR_ERR(oinfo));
1810 op_data->op_fid2 = oinfo->lmo_fid;
1813 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
1815 RETURN(PTR_ERR(tgt));
1818 * Cancel UPDATE lock on child (fid1).
1820 op_data->op_flags |= MF_MDC_CANCEL_FID2;
1821 rc = lmv_early_cancel(exp, NULL, op_data, tgt->ltd_idx, LCK_EX,
1822 MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1);
1826 rc = md_link(tgt->ltd_exp, op_data, request);
1831 static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data,
1832 const char *old, size_t oldlen,
1833 const char *new, size_t newlen,
1834 struct ptlrpc_request **request)
1836 struct obd_device *obd = exp->exp_obd;
1837 struct lmv_obd *lmv = &obd->u.lmv;
1838 struct lmv_tgt_desc *src_tgt;
1839 struct lmv_tgt_desc *tgt_tgt;
1840 struct obd_export *target_exp;
1841 struct mdt_body *body;
1845 LASSERT(oldlen != 0);
1847 CDEBUG(D_INODE, "RENAME %.*s in "DFID":%d to %.*s in "DFID":%d\n",
1848 (int)oldlen, old, PFID(&op_data->op_fid1),
1849 op_data->op_mea1 ? op_data->op_mea1->lsm_md_stripe_count : 0,
1850 (int)newlen, new, PFID(&op_data->op_fid2),
1851 op_data->op_mea2 ? op_data->op_mea2->lsm_md_stripe_count : 0);
1853 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
1854 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
1855 op_data->op_cap = cfs_curproc_cap_pack();
1856 if (op_data->op_cli_flags & CLI_MIGRATE) {
1857 LASSERTF(fid_is_sane(&op_data->op_fid3), "invalid FID "DFID"\n",
1858 PFID(&op_data->op_fid3));
1860 if (op_data->op_mea1 != NULL) {
1861 struct lmv_stripe_md *lsm = op_data->op_mea1;
1862 struct lmv_tgt_desc *tmp;
1864 /* Fix the parent fid for striped dir */
1865 tmp = lmv_locate_target_for_name(lmv, lsm, old,
1870 RETURN(PTR_ERR(tmp));
1873 rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
1877 src_tgt = lmv_find_target(lmv, &op_data->op_fid3);
1878 if (IS_ERR(src_tgt))
1879 RETURN(PTR_ERR(src_tgt));
1881 target_exp = src_tgt->ltd_exp;
1883 if (op_data->op_mea1 != NULL) {
1884 struct lmv_stripe_md *lsm = op_data->op_mea1;
1886 src_tgt = lmv_locate_target_for_name(lmv, lsm, old,
1891 src_tgt = lmv_find_target(lmv, &op_data->op_fid1);
1893 if (IS_ERR(src_tgt))
1894 RETURN(PTR_ERR(src_tgt));
1897 if (op_data->op_mea2 != NULL) {
1898 struct lmv_stripe_md *lsm = op_data->op_mea2;
1900 tgt_tgt = lmv_locate_target_for_name(lmv, lsm, new,
1905 tgt_tgt = lmv_find_target(lmv, &op_data->op_fid2);
1908 if (IS_ERR(tgt_tgt))
1909 RETURN(PTR_ERR(tgt_tgt));
1911 target_exp = tgt_tgt->ltd_exp;
1915 * LOOKUP lock on src child (fid3) should also be cancelled for
1916 * src_tgt in mdc_rename.
1918 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
1921 * Cancel UPDATE locks on tgt parent (fid2), tgt_tgt is its
1924 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
1925 LCK_EX, MDS_INODELOCK_UPDATE,
1926 MF_MDC_CANCEL_FID2);
1931 * Cancel LOOKUP locks on source child (fid3) for parent tgt_tgt.
1933 if (fid_is_sane(&op_data->op_fid3)) {
1934 struct lmv_tgt_desc *tgt;
1936 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1938 RETURN(PTR_ERR(tgt));
1940 /* Cancel LOOKUP lock on its parent */
1941 rc = lmv_early_cancel(exp, tgt, op_data, src_tgt->ltd_idx,
1942 LCK_EX, MDS_INODELOCK_LOOKUP,
1943 MF_MDC_CANCEL_FID3);
1947 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
1948 LCK_EX, MDS_INODELOCK_ELC,
1949 MF_MDC_CANCEL_FID3);
1956 * Cancel all the locks on tgt child (fid4).
1958 if (fid_is_sane(&op_data->op_fid4)) {
1959 struct lmv_tgt_desc *tgt;
1961 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
1962 LCK_EX, MDS_INODELOCK_ELC,
1963 MF_MDC_CANCEL_FID4);
1967 tgt = lmv_find_target(lmv, &op_data->op_fid4);
1969 RETURN(PTR_ERR(tgt));
1971 /* Since the target child might be destroyed, and it might
1972 * become orphan, and we can only check orphan on the local
1973 * MDT right now, so we send rename request to the MDT where
1974 * target child is located. If target child does not exist,
1975 * then it will send the request to the target parent */
1976 target_exp = tgt->ltd_exp;
1979 rc = md_rename(target_exp, op_data, old, oldlen, new, newlen,
1982 if (rc != 0 && rc != -EXDEV)
1985 body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
1989 /* Not cross-ref case, just get out of here. */
1990 if (likely(!(body->mbo_valid & OBD_MD_MDS)))
1993 CDEBUG(D_INODE, "%s: try rename to another MDT for "DFID"\n",
1994 exp->exp_obd->obd_name, PFID(&body->mbo_fid1));
1996 op_data->op_fid4 = body->mbo_fid1;
1997 ptlrpc_req_finished(*request);
2002 static int lmv_setattr(struct obd_export *exp, struct md_op_data *op_data,
2003 void *ea, size_t ealen, struct ptlrpc_request **request)
2005 struct obd_device *obd = exp->exp_obd;
2006 struct lmv_obd *lmv = &obd->u.lmv;
2007 struct lmv_tgt_desc *tgt;
2011 CDEBUG(D_INODE, "SETATTR for "DFID", valid 0x%x\n",
2012 PFID(&op_data->op_fid1), op_data->op_attr.ia_valid);
2014 op_data->op_flags |= MF_MDC_CANCEL_FID1;
2015 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2017 RETURN(PTR_ERR(tgt));
2019 rc = md_setattr(tgt->ltd_exp, op_data, ea, ealen, request);
2024 static int lmv_fsync(struct obd_export *exp, const struct lu_fid *fid,
2025 struct ptlrpc_request **request)
2027 struct obd_device *obd = exp->exp_obd;
2028 struct lmv_obd *lmv = &obd->u.lmv;
2029 struct lmv_tgt_desc *tgt;
2033 tgt = lmv_find_target(lmv, fid);
2035 RETURN(PTR_ERR(tgt));
2037 rc = md_fsync(tgt->ltd_exp, fid, request);
2041 struct stripe_dirent {
2042 struct page *sd_page;
2043 struct lu_dirpage *sd_dp;
2044 struct lu_dirent *sd_ent;
2048 struct lmv_dir_ctxt {
2049 struct lmv_obd *ldc_lmv;
2050 struct md_op_data *ldc_op_data;
2051 struct md_callback *ldc_cb_op;
2054 struct stripe_dirent ldc_stripes[0];
2057 static inline void stripe_dirent_unload(struct stripe_dirent *stripe)
2059 if (stripe->sd_page) {
2060 kunmap(stripe->sd_page);
2061 put_page(stripe->sd_page);
2062 stripe->sd_page = NULL;
2063 stripe->sd_ent = NULL;
2067 static inline void put_lmv_dir_ctxt(struct lmv_dir_ctxt *ctxt)
2071 for (i = 0; i < ctxt->ldc_count; i++)
2072 stripe_dirent_unload(&ctxt->ldc_stripes[i]);
2075 /* if @ent is dummy, or . .., get next */
2076 static struct lu_dirent *stripe_dirent_get(struct lmv_dir_ctxt *ctxt,
2077 struct lu_dirent *ent,
2080 for (; ent; ent = lu_dirent_next(ent)) {
2081 /* Skip dummy entry */
2082 if (le16_to_cpu(ent->lde_namelen) == 0)
2085 /* skip . and .. for other stripes */
2087 (strncmp(ent->lde_name, ".",
2088 le16_to_cpu(ent->lde_namelen)) == 0 ||
2089 strncmp(ent->lde_name, "..",
2090 le16_to_cpu(ent->lde_namelen)) == 0))
2093 if (le64_to_cpu(ent->lde_hash) >= ctxt->ldc_hash)
2100 static struct lu_dirent *stripe_dirent_load(struct lmv_dir_ctxt *ctxt,
2101 struct stripe_dirent *stripe,
2104 struct md_op_data *op_data = ctxt->ldc_op_data;
2105 struct lmv_oinfo *oinfo;
2106 struct lu_fid fid = op_data->op_fid1;
2107 struct inode *inode = op_data->op_data;
2108 struct lmv_tgt_desc *tgt;
2109 struct lu_dirent *ent = stripe->sd_ent;
2110 __u64 hash = ctxt->ldc_hash;
2115 LASSERT(stripe == &ctxt->ldc_stripes[stripe_index]);
2119 if (stripe->sd_page) {
2120 __u64 end = le64_to_cpu(stripe->sd_dp->ldp_hash_end);
2122 /* @hash should be the last dirent hash */
2123 LASSERTF(hash <= end,
2124 "ctxt@%p stripe@%p hash %llx end %llx\n",
2125 ctxt, stripe, hash, end);
2126 /* unload last page */
2127 stripe_dirent_unload(stripe);
2129 if (end == MDS_DIR_END_OFF) {
2130 stripe->sd_eof = true;
2136 oinfo = &op_data->op_mea1->lsm_md_oinfo[stripe_index];
2137 tgt = lmv_get_target(ctxt->ldc_lmv, oinfo->lmo_mds, NULL);
2143 /* op_data is shared by stripes, reset after use */
2144 op_data->op_fid1 = oinfo->lmo_fid;
2145 op_data->op_fid2 = oinfo->lmo_fid;
2146 op_data->op_data = oinfo->lmo_root;
2148 rc = md_read_page(tgt->ltd_exp, op_data, ctxt->ldc_cb_op, hash,
2151 op_data->op_fid1 = fid;
2152 op_data->op_fid2 = fid;
2153 op_data->op_data = inode;
2158 stripe->sd_dp = page_address(stripe->sd_page);
2159 ent = stripe_dirent_get(ctxt, lu_dirent_start(stripe->sd_dp),
2161 /* in case a page filled with ., .. and dummy, read next */
2164 stripe->sd_ent = ent;
2167 /* treat error as eof, so dir can be partially accessed */
2168 stripe->sd_eof = true;
2169 LCONSOLE_WARN("dir "DFID" stripe %d readdir failed: %d, "
2170 "directory is partially accessed!\n",
2171 PFID(&ctxt->ldc_op_data->op_fid1), stripe_index,
2178 static int lmv_file_resync(struct obd_export *exp, struct md_op_data *data)
2180 struct obd_device *obd = exp->exp_obd;
2181 struct lmv_obd *lmv = &obd->u.lmv;
2182 struct lmv_tgt_desc *tgt;
2186 rc = lmv_check_connect(obd);
2190 tgt = lmv_find_target(lmv, &data->op_fid1);
2192 RETURN(PTR_ERR(tgt));
2194 data->op_flags |= MF_MDC_CANCEL_FID1;
2195 rc = md_file_resync(tgt->ltd_exp, data);
2200 * Get dirent with the closest hash for striped directory
2202 * This function will search the dir entry, whose hash value is the
2203 * closest(>=) to hash from all of sub-stripes, and it is only being called
2204 * for striped directory.
2206 * \param[in] ctxt dir read context
2208 * \retval dirent get the entry successfully
2209 * NULL does not get the entry, normally it means
2210 * it reaches the end of the directory, while read
2211 * stripe dirent error is ignored to allow partial
2214 static struct lu_dirent *lmv_dirent_next(struct lmv_dir_ctxt *ctxt)
2216 struct stripe_dirent *stripe;
2217 struct lu_dirent *ent = NULL;
2221 /* TODO: optimize with k-way merge sort */
2222 for (i = 0; i < ctxt->ldc_count; i++) {
2223 stripe = &ctxt->ldc_stripes[i];
2227 if (!stripe->sd_ent) {
2228 stripe_dirent_load(ctxt, stripe, i);
2229 if (!stripe->sd_ent) {
2230 LASSERT(stripe->sd_eof);
2236 le64_to_cpu(ctxt->ldc_stripes[min].sd_ent->lde_hash) >
2237 le64_to_cpu(stripe->sd_ent->lde_hash)) {
2239 if (le64_to_cpu(stripe->sd_ent->lde_hash) ==
2246 stripe = &ctxt->ldc_stripes[min];
2247 ent = stripe->sd_ent;
2248 /* pop found dirent */
2249 stripe->sd_ent = stripe_dirent_get(ctxt, lu_dirent_next(ent),
2257 * Build dir entry page for striped directory
2259 * This function gets one entry by @offset from a striped directory. It will
2260 * read entries from all of stripes, and choose one closest to the required
2261 * offset(&offset). A few notes
2262 * 1. skip . and .. for non-zero stripes, because there can only have one .
2263 * and .. in a directory.
2264 * 2. op_data will be shared by all of stripes, instead of allocating new
2265 * one, so need to restore before reusing.
2267 * \param[in] exp obd export refer to LMV
2268 * \param[in] op_data hold those MD parameters of read_entry
2269 * \param[in] cb_op ldlm callback being used in enqueue in mdc_read_entry
2270 * \param[in] offset starting hash offset
2271 * \param[out] ppage the page holding the entry. Note: because the entry
2272 * will be accessed in upper layer, so we need hold the
2273 * page until the usages of entry is finished, see
2274 * ll_dir_entry_next.
2276 * retval =0 if get entry successfully
2277 * <0 cannot get entry
2279 static int lmv_striped_read_page(struct obd_export *exp,
2280 struct md_op_data *op_data,
2281 struct md_callback *cb_op,
2282 __u64 offset, struct page **ppage)
2284 struct page *page = NULL;
2285 struct lu_dirpage *dp;
2287 struct lu_dirent *ent;
2288 struct lu_dirent *last_ent;
2290 struct lmv_dir_ctxt *ctxt;
2291 struct lu_dirent *next = NULL;
2297 /* Allocate a page and read entries from all of stripes and fill
2298 * the page by hash order */
2299 page = alloc_page(GFP_KERNEL);
2303 /* Initialize the entry page */
2305 memset(dp, 0, sizeof(*dp));
2306 dp->ldp_hash_start = cpu_to_le64(offset);
2309 left_bytes = PAGE_SIZE - sizeof(*dp);
2313 /* initalize dir read context */
2314 stripe_count = op_data->op_mea1->lsm_md_stripe_count;
2315 OBD_ALLOC(ctxt, offsetof(typeof(*ctxt), ldc_stripes[stripe_count]));
2317 GOTO(free_page, rc = -ENOMEM);
2318 ctxt->ldc_lmv = &exp->exp_obd->u.lmv;
2319 ctxt->ldc_op_data = op_data;
2320 ctxt->ldc_cb_op = cb_op;
2321 ctxt->ldc_hash = offset;
2322 ctxt->ldc_count = stripe_count;
2325 next = lmv_dirent_next(ctxt);
2327 /* end of directory */
2329 ctxt->ldc_hash = MDS_DIR_END_OFF;
2332 ctxt->ldc_hash = le64_to_cpu(next->lde_hash);
2334 ent_size = le16_to_cpu(next->lde_reclen);
2336 /* the last entry lde_reclen is 0, but it might not be the last
2337 * one of this temporay dir page */
2339 ent_size = lu_dirent_calc_size(
2340 le16_to_cpu(next->lde_namelen),
2341 le32_to_cpu(next->lde_attrs));
2343 if (ent_size > left_bytes)
2346 memcpy(ent, next, ent_size);
2348 /* Replace . with master FID and Replace .. with the parent FID
2349 * of master object */
2350 if (strncmp(ent->lde_name, ".",
2351 le16_to_cpu(ent->lde_namelen)) == 0 &&
2352 le16_to_cpu(ent->lde_namelen) == 1)
2353 fid_cpu_to_le(&ent->lde_fid, &op_data->op_fid1);
2354 else if (strncmp(ent->lde_name, "..",
2355 le16_to_cpu(ent->lde_namelen)) == 0 &&
2356 le16_to_cpu(ent->lde_namelen) == 2)
2357 fid_cpu_to_le(&ent->lde_fid, &op_data->op_fid3);
2359 CDEBUG(D_INODE, "entry %.*s hash %#llx\n",
2360 le16_to_cpu(ent->lde_namelen), ent->lde_name,
2361 le64_to_cpu(ent->lde_hash));
2363 left_bytes -= ent_size;
2364 ent->lde_reclen = cpu_to_le16(ent_size);
2366 ent = (void *)ent + ent_size;
2369 last_ent->lde_reclen = 0;
2372 dp->ldp_flags |= LDF_EMPTY;
2373 else if (ctxt->ldc_hash == le64_to_cpu(last_ent->lde_hash))
2374 dp->ldp_flags |= LDF_COLLIDE;
2375 dp->ldp_flags = cpu_to_le32(dp->ldp_flags);
2376 dp->ldp_hash_end = cpu_to_le64(ctxt->ldc_hash);
2378 put_lmv_dir_ctxt(ctxt);
2379 OBD_FREE(ctxt, offsetof(typeof(*ctxt), ldc_stripes[stripe_count]));
2392 int lmv_read_page(struct obd_export *exp, struct md_op_data *op_data,
2393 struct md_callback *cb_op, __u64 offset,
2394 struct page **ppage)
2396 struct obd_device *obd = exp->exp_obd;
2397 struct lmv_obd *lmv = &obd->u.lmv;
2398 struct lmv_stripe_md *lsm = op_data->op_mea1;
2399 struct lmv_tgt_desc *tgt;
2403 if (unlikely(lsm != NULL)) {
2404 rc = lmv_striped_read_page(exp, op_data, cb_op, offset, ppage);
2408 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2410 RETURN(PTR_ERR(tgt));
2412 rc = md_read_page(tgt->ltd_exp, op_data, cb_op, offset, ppage);
2418 * Unlink a file/directory
2420 * Unlink a file or directory under the parent dir. The unlink request
2421 * usually will be sent to the MDT where the child is located, but if
2422 * the client does not have the child FID then request will be sent to the
2423 * MDT where the parent is located.
2425 * If the parent is a striped directory then it also needs to locate which
2426 * stripe the name of the child is located, and replace the parent FID
2427 * (@op->op_fid1) with the stripe FID. Note: if the stripe is unknown,
2428 * it will walk through all of sub-stripes until the child is being
2431 * \param[in] exp export refer to LMV
2432 * \param[in] op_data different parameters transferred beween client
2433 * MD stacks, name, namelen, FIDs etc.
2434 * op_fid1 is the parent FID, op_fid2 is the child
2436 * \param[out] request point to the request of unlink.
2438 * retval 0 if succeed
2439 * negative errno if failed.
2441 static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data,
2442 struct ptlrpc_request **request)
2444 struct obd_device *obd = exp->exp_obd;
2445 struct lmv_obd *lmv = &obd->u.lmv;
2446 struct lmv_tgt_desc *tgt = NULL;
2447 struct lmv_tgt_desc *parent_tgt = NULL;
2448 struct mdt_body *body;
2450 int stripe_index = 0;
2451 struct lmv_stripe_md *lsm = op_data->op_mea1;
2455 /* For striped dir, we need to locate the parent as well */
2457 struct lmv_tgt_desc *tmp;
2459 LASSERT(op_data->op_name != NULL &&
2460 op_data->op_namelen != 0);
2462 tmp = lmv_locate_target_for_name(lmv, lsm,
2464 op_data->op_namelen,
2468 /* return -EBADFD means unknown hash type, might
2469 * need try all sub-stripe here */
2470 if (IS_ERR(tmp) && PTR_ERR(tmp) != -EBADFD)
2471 RETURN(PTR_ERR(tmp));
2473 /* Note: both migrating dir and unknown hash dir need to
2474 * try all of sub-stripes, so we need start search the
2475 * name from stripe 0, but migrating dir is already handled
2476 * inside lmv_locate_target_for_name(), so we only check
2477 * unknown hash type directory here */
2478 if (!lmv_is_known_hash_type(lsm->lsm_md_hash_type)) {
2479 struct lmv_oinfo *oinfo;
2481 oinfo = &lsm->lsm_md_oinfo[stripe_index];
2483 op_data->op_fid1 = oinfo->lmo_fid;
2484 op_data->op_mds = oinfo->lmo_mds;
2489 /* Send unlink requests to the MDT where the child is located */
2490 if (likely(!fid_is_zero(&op_data->op_fid2)))
2491 tgt = lmv_find_target(lmv, &op_data->op_fid2);
2492 else if (lsm != NULL)
2493 tgt = lmv_get_target(lmv, op_data->op_mds, NULL);
2495 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
2498 RETURN(PTR_ERR(tgt));
2500 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2501 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2502 op_data->op_cap = cfs_curproc_cap_pack();
2505 * If child's fid is given, cancel unused locks for it if it is from
2506 * another export than parent.
2508 * LOOKUP lock for child (fid3) should also be cancelled on parent
2509 * tgt_tgt in mdc_unlink().
2511 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
2514 * Cancel FULL locks on child (fid3).
2516 parent_tgt = lmv_find_target(lmv, &op_data->op_fid1);
2517 if (IS_ERR(parent_tgt))
2518 RETURN(PTR_ERR(parent_tgt));
2520 if (parent_tgt != tgt) {
2521 rc = lmv_early_cancel(exp, parent_tgt, op_data, tgt->ltd_idx,
2522 LCK_EX, MDS_INODELOCK_LOOKUP,
2523 MF_MDC_CANCEL_FID3);
2526 rc = lmv_early_cancel(exp, NULL, op_data, tgt->ltd_idx, LCK_EX,
2527 MDS_INODELOCK_ELC, MF_MDC_CANCEL_FID3);
2531 CDEBUG(D_INODE, "unlink with fid="DFID"/"DFID" -> mds #%u\n",
2532 PFID(&op_data->op_fid1), PFID(&op_data->op_fid2), tgt->ltd_idx);
2534 rc = md_unlink(tgt->ltd_exp, op_data, request);
2535 if (rc != 0 && rc != -EREMOTE && rc != -ENOENT)
2538 /* Try next stripe if it is needed. */
2539 if (rc == -ENOENT && lsm != NULL && lmv_need_try_all_stripes(lsm)) {
2540 struct lmv_oinfo *oinfo;
2543 if (stripe_index >= lsm->lsm_md_stripe_count)
2546 oinfo = &lsm->lsm_md_oinfo[stripe_index];
2548 op_data->op_fid1 = oinfo->lmo_fid;
2549 op_data->op_mds = oinfo->lmo_mds;
2551 ptlrpc_req_finished(*request);
2554 goto try_next_stripe;
2557 body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
2561 /* Not cross-ref case, just get out of here. */
2562 if (likely(!(body->mbo_valid & OBD_MD_MDS)))
2565 CDEBUG(D_INODE, "%s: try unlink to another MDT for "DFID"\n",
2566 exp->exp_obd->obd_name, PFID(&body->mbo_fid1));
2568 /* This is a remote object, try remote MDT, Note: it may
2569 * try more than 1 time here, Considering following case
2570 * /mnt/lustre is root on MDT0, remote1 is on MDT1
2571 * 1. Initially A does not know where remote1 is, it send
2572 * unlink RPC to MDT0, MDT0 return -EREMOTE, it will
2573 * resend unlink RPC to MDT1 (retry 1st time).
2575 * 2. During the unlink RPC in flight,
2576 * client B mv /mnt/lustre/remote1 /mnt/lustre/remote2
2577 * and create new remote1, but on MDT0
2579 * 3. MDT1 get unlink RPC(from A), then do remote lock on
2580 * /mnt/lustre, then lookup get fid of remote1, and find
2581 * it is remote dir again, and replay -EREMOTE again.
2583 * 4. Then A will resend unlink RPC to MDT0. (retry 2nd times).
2585 * In theory, it might try unlimited time here, but it should
2586 * be very rare case. */
2587 op_data->op_fid2 = body->mbo_fid1;
2588 ptlrpc_req_finished(*request);
2594 static int lmv_precleanup(struct obd_device *obd)
2597 libcfs_kkuc_group_rem(&obd->obd_uuid, 0, KUC_GRP_HSM);
2598 fld_client_debugfs_fini(&obd->u.lmv.lmv_fld);
2599 lprocfs_obd_cleanup(obd);
2600 lprocfs_free_md_stats(obd);
2605 * Get by key a value associated with a LMV device.
2607 * Dispatch request to lower-layer devices as needed.
2609 * \param[in] env execution environment for this thread
2610 * \param[in] exp export for the LMV device
2611 * \param[in] keylen length of key identifier
2612 * \param[in] key identifier of key to get value for
2613 * \param[in] vallen size of \a val
2614 * \param[out] val pointer to storage location for value
2615 * \param[in] lsm optional striping metadata of object
2617 * \retval 0 on success
2618 * \retval negative negated errno on failure
2620 static int lmv_get_info(const struct lu_env *env, struct obd_export *exp,
2621 __u32 keylen, void *key, __u32 *vallen, void *val)
2623 struct obd_device *obd;
2624 struct lmv_obd *lmv;
2628 obd = class_exp2obd(exp);
2630 CDEBUG(D_IOCTL, "Invalid client cookie %#llx\n",
2631 exp->exp_handle.h_cookie);
2636 if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) {
2639 LASSERT(*vallen == sizeof(__u32));
2640 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2641 struct lmv_tgt_desc *tgt = lmv->tgts[i];
2643 * All tgts should be connected when this gets called.
2645 if (tgt == NULL || tgt->ltd_exp == NULL)
2648 if (!obd_get_info(env, tgt->ltd_exp, keylen, key,
2653 } else if (KEY_IS(KEY_MAX_EASIZE) ||
2654 KEY_IS(KEY_DEFAULT_EASIZE) ||
2655 KEY_IS(KEY_CONN_DATA)) {
2657 * Forwarding this request to first MDS, it should know LOV
2660 rc = obd_get_info(env, lmv->tgts[0]->ltd_exp, keylen, key,
2662 if (!rc && KEY_IS(KEY_CONN_DATA))
2663 exp->exp_connect_data = *(struct obd_connect_data *)val;
2665 } else if (KEY_IS(KEY_TGT_COUNT)) {
2666 *((int *)val) = lmv->desc.ld_tgt_count;
2670 CDEBUG(D_IOCTL, "Invalid key\n");
2675 * Asynchronously set by key a value associated with a LMV device.
2677 * Dispatch request to lower-layer devices as needed.
2679 * \param[in] env execution environment for this thread
2680 * \param[in] exp export for the LMV device
2681 * \param[in] keylen length of key identifier
2682 * \param[in] key identifier of key to store value for
2683 * \param[in] vallen size of value to store
2684 * \param[in] val pointer to data to be stored
2685 * \param[in] set optional list of related ptlrpc requests
2687 * \retval 0 on success
2688 * \retval negative negated errno on failure
2690 int lmv_set_info_async(const struct lu_env *env, struct obd_export *exp,
2691 __u32 keylen, void *key, __u32 vallen, void *val,
2692 struct ptlrpc_request_set *set)
2694 struct lmv_tgt_desc *tgt = NULL;
2695 struct obd_device *obd;
2696 struct lmv_obd *lmv;
2700 obd = class_exp2obd(exp);
2702 CDEBUG(D_IOCTL, "Invalid client cookie %#llx\n",
2703 exp->exp_handle.h_cookie);
2708 if (KEY_IS(KEY_READ_ONLY) || KEY_IS(KEY_FLUSH_CTX) ||
2709 KEY_IS(KEY_DEFAULT_EASIZE)) {
2712 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2715 if (tgt == NULL || tgt->ltd_exp == NULL)
2718 err = obd_set_info_async(env, tgt->ltd_exp,
2719 keylen, key, vallen, val, set);
2730 static int lmv_unpack_md_v1(struct obd_export *exp, struct lmv_stripe_md *lsm,
2731 const struct lmv_mds_md_v1 *lmm1)
2733 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2740 lsm->lsm_md_magic = le32_to_cpu(lmm1->lmv_magic);
2741 lsm->lsm_md_stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
2742 lsm->lsm_md_master_mdt_index = le32_to_cpu(lmm1->lmv_master_mdt_index);
2743 if (OBD_FAIL_CHECK(OBD_FAIL_UNKNOWN_LMV_STRIPE))
2744 lsm->lsm_md_hash_type = LMV_HASH_TYPE_UNKNOWN;
2746 lsm->lsm_md_hash_type = le32_to_cpu(lmm1->lmv_hash_type);
2747 lsm->lsm_md_layout_version = le32_to_cpu(lmm1->lmv_layout_version);
2748 cplen = strlcpy(lsm->lsm_md_pool_name, lmm1->lmv_pool_name,
2749 sizeof(lsm->lsm_md_pool_name));
2751 if (cplen >= sizeof(lsm->lsm_md_pool_name))
2754 CDEBUG(D_INFO, "unpack lsm count %d, master %d hash_type %d"
2755 "layout_version %d\n", lsm->lsm_md_stripe_count,
2756 lsm->lsm_md_master_mdt_index, lsm->lsm_md_hash_type,
2757 lsm->lsm_md_layout_version);
2759 stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
2760 for (i = 0; i < stripe_count; i++) {
2761 fid_le_to_cpu(&lsm->lsm_md_oinfo[i].lmo_fid,
2762 &lmm1->lmv_stripe_fids[i]);
2763 rc = lmv_fld_lookup(lmv, &lsm->lsm_md_oinfo[i].lmo_fid,
2764 &lsm->lsm_md_oinfo[i].lmo_mds);
2767 CDEBUG(D_INFO, "unpack fid #%d "DFID"\n", i,
2768 PFID(&lsm->lsm_md_oinfo[i].lmo_fid));
2774 static int lmv_unpackmd(struct obd_export *exp, struct lmv_stripe_md **lsmp,
2775 const union lmv_mds_md *lmm, size_t lmm_size)
2777 struct lmv_stripe_md *lsm;
2780 bool allocated = false;
2783 LASSERT(lsmp != NULL);
2787 if (lsm != NULL && lmm == NULL) {
2789 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
2790 /* For migrating inode, the master stripe and master
2791 * object will be the same, so do not need iput, see
2792 * ll_update_lsm_md */
2793 if (!(lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION &&
2794 i == 0) && lsm->lsm_md_oinfo[i].lmo_root != NULL)
2795 iput(lsm->lsm_md_oinfo[i].lmo_root);
2797 lsm_size = lmv_stripe_md_size(lsm->lsm_md_stripe_count);
2798 OBD_FREE(lsm, lsm_size);
2803 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE)
2807 if (le32_to_cpu(lmm->lmv_magic) != LMV_MAGIC_V1 &&
2808 le32_to_cpu(lmm->lmv_magic) != LMV_USER_MAGIC) {
2809 CERROR("%s: invalid lmv magic %x: rc = %d\n",
2810 exp->exp_obd->obd_name, le32_to_cpu(lmm->lmv_magic),
2815 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_V1)
2816 lsm_size = lmv_stripe_md_size(lmv_mds_md_stripe_count_get(lmm));
2819 * Unpack default dirstripe(lmv_user_md) to lmv_stripe_md,
2820 * stripecount should be 0 then.
2822 lsm_size = lmv_stripe_md_size(0);
2824 lsm_size = lmv_stripe_md_size(lmv_mds_md_stripe_count_get(lmm));
2826 OBD_ALLOC(lsm, lsm_size);
2833 switch (le32_to_cpu(lmm->lmv_magic)) {
2835 rc = lmv_unpack_md_v1(exp, lsm, &lmm->lmv_md_v1);
2838 CERROR("%s: unrecognized magic %x\n", exp->exp_obd->obd_name,
2839 le32_to_cpu(lmm->lmv_magic));
2844 if (rc != 0 && allocated) {
2845 OBD_FREE(lsm, lsm_size);
2852 void lmv_free_memmd(struct lmv_stripe_md *lsm)
2854 lmv_unpackmd(NULL, &lsm, NULL, 0);
2856 EXPORT_SYMBOL(lmv_free_memmd);
2858 static int lmv_cancel_unused(struct obd_export *exp, const struct lu_fid *fid,
2859 union ldlm_policy_data *policy,
2860 enum ldlm_mode mode, enum ldlm_cancel_flags flags,
2863 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2868 LASSERT(fid != NULL);
2870 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2871 struct lmv_tgt_desc *tgt = lmv->tgts[i];
2874 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
2877 err = md_cancel_unused(tgt->ltd_exp, fid, policy, mode, flags,
2885 static int lmv_set_lock_data(struct obd_export *exp,
2886 const struct lustre_handle *lockh,
2887 void *data, __u64 *bits)
2889 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2890 struct lmv_tgt_desc *tgt = lmv->tgts[0];
2894 if (tgt == NULL || tgt->ltd_exp == NULL)
2896 rc = md_set_lock_data(tgt->ltd_exp, lockh, data, bits);
2900 enum ldlm_mode lmv_lock_match(struct obd_export *exp, __u64 flags,
2901 const struct lu_fid *fid, enum ldlm_type type,
2902 union ldlm_policy_data *policy,
2903 enum ldlm_mode mode, struct lustre_handle *lockh)
2905 struct obd_device *obd = exp->exp_obd;
2906 struct lmv_obd *lmv = &obd->u.lmv;
2912 CDEBUG(D_INODE, "Lock match for "DFID"\n", PFID(fid));
2915 * With DNE every object can have two locks in different namespaces:
2916 * lookup lock in space of MDT storing direntry and update/open lock in
2917 * space of MDT storing inode. Try the MDT that the FID maps to first,
2918 * since this can be easily found, and only try others if that fails.
2920 for (i = 0, tgt = lmv_find_target_index(lmv, fid);
2921 i < lmv->desc.ld_tgt_count;
2922 i++, tgt = (tgt + 1) % lmv->desc.ld_tgt_count) {
2924 CDEBUG(D_HA, "%s: "DFID" is inaccessible: rc = %d\n",
2925 obd->obd_name, PFID(fid), tgt);
2929 if (lmv->tgts[tgt] == NULL ||
2930 lmv->tgts[tgt]->ltd_exp == NULL ||
2931 lmv->tgts[tgt]->ltd_active == 0)
2934 rc = md_lock_match(lmv->tgts[tgt]->ltd_exp, flags, fid,
2935 type, policy, mode, lockh);
2943 int lmv_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
2944 struct obd_export *dt_exp, struct obd_export *md_exp,
2945 struct lustre_md *md)
2947 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2948 struct lmv_tgt_desc *tgt = lmv->tgts[0];
2950 if (tgt == NULL || tgt->ltd_exp == NULL)
2953 return md_get_lustre_md(lmv->tgts[0]->ltd_exp, req, dt_exp, md_exp, md);
2956 int lmv_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
2958 struct obd_device *obd = exp->exp_obd;
2959 struct lmv_obd *lmv = &obd->u.lmv;
2960 struct lmv_tgt_desc *tgt = lmv->tgts[0];
2963 if (md->lmv != NULL) {
2964 lmv_free_memmd(md->lmv);
2967 if (tgt == NULL || tgt->ltd_exp == NULL)
2969 RETURN(md_free_lustre_md(lmv->tgts[0]->ltd_exp, md));
2972 int lmv_set_open_replay_data(struct obd_export *exp,
2973 struct obd_client_handle *och,
2974 struct lookup_intent *it)
2976 struct obd_device *obd = exp->exp_obd;
2977 struct lmv_obd *lmv = &obd->u.lmv;
2978 struct lmv_tgt_desc *tgt;
2981 tgt = lmv_find_target(lmv, &och->och_fid);
2983 RETURN(PTR_ERR(tgt));
2985 RETURN(md_set_open_replay_data(tgt->ltd_exp, och, it));
2988 int lmv_clear_open_replay_data(struct obd_export *exp,
2989 struct obd_client_handle *och)
2991 struct obd_device *obd = exp->exp_obd;
2992 struct lmv_obd *lmv = &obd->u.lmv;
2993 struct lmv_tgt_desc *tgt;
2996 tgt = lmv_find_target(lmv, &och->och_fid);
2998 RETURN(PTR_ERR(tgt));
3000 RETURN(md_clear_open_replay_data(tgt->ltd_exp, och));
3003 int lmv_intent_getattr_async(struct obd_export *exp,
3004 struct md_enqueue_info *minfo)
3006 struct md_op_data *op_data = &minfo->mi_data;
3007 struct obd_device *obd = exp->exp_obd;
3008 struct lmv_obd *lmv = &obd->u.lmv;
3009 struct lmv_tgt_desc *tgt = NULL;
3013 if (!fid_is_sane(&op_data->op_fid2))
3016 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
3018 RETURN(PTR_ERR(tgt));
3021 * no special handle for remote dir, which needs to fetch both LOOKUP
3022 * lock on parent, and then UPDATE lock on child MDT, which makes all
3023 * complicated because this is done async. So only LOOKUP lock is
3024 * fetched for remote dir, but considering remote dir is rare case,
3025 * and not supporting it in statahead won't cause any issue, just leave
3029 rc = md_intent_getattr_async(tgt->ltd_exp, minfo);
3033 int lmv_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
3034 struct lu_fid *fid, __u64 *bits)
3036 struct obd_device *obd = exp->exp_obd;
3037 struct lmv_obd *lmv = &obd->u.lmv;
3038 struct lmv_tgt_desc *tgt;
3042 tgt = lmv_find_target(lmv, fid);
3044 RETURN(PTR_ERR(tgt));
3046 rc = md_revalidate_lock(tgt->ltd_exp, it, fid, bits);
3050 int lmv_get_fid_from_lsm(struct obd_export *exp,
3051 const struct lmv_stripe_md *lsm,
3052 const char *name, int namelen, struct lu_fid *fid)
3054 const struct lmv_oinfo *oinfo;
3056 LASSERT(lsm != NULL);
3057 oinfo = lsm_name_to_stripe_info(lsm, name, namelen);
3059 return PTR_ERR(oinfo);
3061 *fid = oinfo->lmo_fid;
3067 * For lmv, only need to send request to master MDT, and the master MDT will
3068 * process with other slave MDTs. The only exception is Q_GETOQUOTA for which
3069 * we directly fetch data from the slave MDTs.
3071 int lmv_quotactl(struct obd_device *unused, struct obd_export *exp,
3072 struct obd_quotactl *oqctl)
3074 struct obd_device *obd = class_exp2obd(exp);
3075 struct lmv_obd *lmv = &obd->u.lmv;
3076 struct lmv_tgt_desc *tgt = lmv->tgts[0];
3079 __u64 curspace, curinodes;
3083 tgt->ltd_exp == NULL ||
3085 lmv->desc.ld_tgt_count == 0) {
3086 CERROR("master lmv inactive\n");
3090 if (oqctl->qc_cmd != Q_GETOQUOTA) {
3091 rc = obd_quotactl(tgt->ltd_exp, oqctl);
3095 curspace = curinodes = 0;
3096 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
3100 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
3103 err = obd_quotactl(tgt->ltd_exp, oqctl);
3105 CERROR("getquota on mdt %d failed. %d\n", i, err);
3109 curspace += oqctl->qc_dqblk.dqb_curspace;
3110 curinodes += oqctl->qc_dqblk.dqb_curinodes;
3113 oqctl->qc_dqblk.dqb_curspace = curspace;
3114 oqctl->qc_dqblk.dqb_curinodes = curinodes;
3119 static int lmv_merge_attr(struct obd_export *exp,
3120 const struct lmv_stripe_md *lsm,
3121 struct cl_attr *attr,
3122 ldlm_blocking_callback cb_blocking)
3127 rc = lmv_revalidate_slaves(exp, lsm, cb_blocking, 0);
3131 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
3132 struct inode *inode = lsm->lsm_md_oinfo[i].lmo_root;
3134 CDEBUG(D_INFO, ""DFID" size %llu, blocks %llu nlink %u,"
3135 " atime %lu ctime %lu, mtime %lu.\n",
3136 PFID(&lsm->lsm_md_oinfo[i].lmo_fid),
3137 i_size_read(inode), (unsigned long long)inode->i_blocks,
3138 inode->i_nlink, LTIME_S(inode->i_atime),
3139 LTIME_S(inode->i_ctime), LTIME_S(inode->i_mtime));
3141 /* for slave stripe, it needs to subtract nlink for . and .. */
3143 attr->cat_nlink += inode->i_nlink - 2;
3145 attr->cat_nlink = inode->i_nlink;
3147 attr->cat_size += i_size_read(inode);
3148 attr->cat_blocks += inode->i_blocks;
3150 if (attr->cat_atime < LTIME_S(inode->i_atime))
3151 attr->cat_atime = LTIME_S(inode->i_atime);
3153 if (attr->cat_ctime < LTIME_S(inode->i_ctime))
3154 attr->cat_ctime = LTIME_S(inode->i_ctime);
3156 if (attr->cat_mtime < LTIME_S(inode->i_mtime))
3157 attr->cat_mtime = LTIME_S(inode->i_mtime);
3162 struct obd_ops lmv_obd_ops = {
3163 .o_owner = THIS_MODULE,
3164 .o_setup = lmv_setup,
3165 .o_cleanup = lmv_cleanup,
3166 .o_precleanup = lmv_precleanup,
3167 .o_process_config = lmv_process_config,
3168 .o_connect = lmv_connect,
3169 .o_disconnect = lmv_disconnect,
3170 .o_statfs = lmv_statfs,
3171 .o_get_info = lmv_get_info,
3172 .o_set_info_async = lmv_set_info_async,
3173 .o_notify = lmv_notify,
3174 .o_get_uuid = lmv_get_uuid,
3175 .o_iocontrol = lmv_iocontrol,
3176 .o_quotactl = lmv_quotactl
3179 struct md_ops lmv_md_ops = {
3180 .m_get_root = lmv_get_root,
3181 .m_null_inode = lmv_null_inode,
3182 .m_close = lmv_close,
3183 .m_create = lmv_create,
3184 .m_enqueue = lmv_enqueue,
3185 .m_getattr = lmv_getattr,
3186 .m_getxattr = lmv_getxattr,
3187 .m_getattr_name = lmv_getattr_name,
3188 .m_intent_lock = lmv_intent_lock,
3190 .m_rename = lmv_rename,
3191 .m_setattr = lmv_setattr,
3192 .m_setxattr = lmv_setxattr,
3193 .m_fsync = lmv_fsync,
3194 .m_file_resync = lmv_file_resync,
3195 .m_read_page = lmv_read_page,
3196 .m_unlink = lmv_unlink,
3197 .m_init_ea_size = lmv_init_ea_size,
3198 .m_cancel_unused = lmv_cancel_unused,
3199 .m_set_lock_data = lmv_set_lock_data,
3200 .m_lock_match = lmv_lock_match,
3201 .m_get_lustre_md = lmv_get_lustre_md,
3202 .m_free_lustre_md = lmv_free_lustre_md,
3203 .m_merge_attr = lmv_merge_attr,
3204 .m_set_open_replay_data = lmv_set_open_replay_data,
3205 .m_clear_open_replay_data = lmv_clear_open_replay_data,
3206 .m_intent_getattr_async = lmv_intent_getattr_async,
3207 .m_revalidate_lock = lmv_revalidate_lock,
3208 .m_get_fid_from_lsm = lmv_get_fid_from_lsm,
3209 .m_unpackmd = lmv_unpackmd,
3212 static int __init lmv_init(void)
3214 return class_register_type(&lmv_obd_ops, &lmv_md_ops, true, NULL,
3215 LUSTRE_LMV_NAME, NULL);
3218 static void __exit lmv_exit(void)
3220 class_unregister_type(LUSTRE_LMV_NAME);
3223 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
3224 MODULE_DESCRIPTION("Lustre Logical Metadata Volume");
3225 MODULE_VERSION(LUSTRE_VERSION_STRING);
3226 MODULE_LICENSE("GPL");
3228 module_init(lmv_init);
3229 module_exit(lmv_exit);