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, 2016, 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
34 #include <linux/slab.h>
35 #include <linux/module.h>
36 #include <linux/init.h>
37 #include <linux/user_namespace.h>
38 #ifdef HAVE_UIDGID_HEADER
39 # include <linux/uidgid.h>
41 #include <linux/slab.h>
42 #include <linux/pagemap.h>
44 #include <linux/math64.h>
45 #include <linux/seq_file.h>
46 #include <linux/namei.h>
48 #include <lustre/lustre_idl.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_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->cluuid = *cluuid;
215 lmv->conn_data = *data;
217 if (lmv->targets_proc_entry == NULL) {
218 lmv->targets_proc_entry = lprocfs_register("target_obds",
221 if (IS_ERR(lmv->targets_proc_entry)) {
222 CERROR("%s: cannot register "
223 "/proc/fs/lustre/%s/%s/target_obds\n",
224 obd->obd_name, obd->obd_type->typ_name,
226 lmv->targets_proc_entry = NULL;
230 rc = lmv_check_connect(obd);
239 if (lmv->targets_proc_entry != NULL)
240 lprocfs_remove(&lmv->targets_proc_entry);
242 class_disconnect(exp);
247 static int lmv_init_ea_size(struct obd_export *exp, __u32 easize,
250 struct obd_device *obd = exp->exp_obd;
251 struct lmv_obd *lmv = &obd->u.lmv;
257 if (lmv->max_easize < easize) {
258 lmv->max_easize = easize;
261 if (lmv->max_def_easize < def_easize) {
262 lmv->max_def_easize = def_easize;
269 if (lmv->connected == 0)
272 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
273 struct lmv_tgt_desc *tgt = lmv->tgts[i];
275 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active) {
276 CWARN("%s: NULL export for %d\n", obd->obd_name, i);
280 rc = md_init_ea_size(tgt->ltd_exp, easize, def_easize);
282 CERROR("%s: obd_init_ea_size() failed on MDT target %d:"
283 " rc = %d\n", obd->obd_name, i, rc);
290 #define MAX_STRING_SIZE 128
292 int lmv_connect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
294 struct lmv_obd *lmv = &obd->u.lmv;
295 struct obd_uuid *cluuid = &lmv->cluuid;
296 struct obd_uuid lmv_mdc_uuid = { "LMV_MDC_UUID" };
297 struct obd_device *mdc_obd;
298 struct obd_export *mdc_exp;
299 struct lu_fld_target target;
303 mdc_obd = class_find_client_obd(&tgt->ltd_uuid, LUSTRE_MDC_NAME,
306 CERROR("target %s not attached\n", tgt->ltd_uuid.uuid);
310 CDEBUG(D_CONFIG, "connect to %s(%s) - %s, %s FOR %s\n",
311 mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
312 tgt->ltd_uuid.uuid, obd->obd_uuid.uuid,
315 if (!mdc_obd->obd_set_up) {
316 CERROR("target %s is not set up\n", tgt->ltd_uuid.uuid);
320 rc = obd_connect(NULL, &mdc_exp, mdc_obd, &lmv_mdc_uuid,
321 &lmv->conn_data, NULL);
323 CERROR("target %s connect error %d\n", tgt->ltd_uuid.uuid, rc);
328 * Init fid sequence client for this mdc and add new fld target.
330 rc = obd_fid_init(mdc_obd, mdc_exp, LUSTRE_SEQ_METADATA);
334 target.ft_srv = NULL;
335 target.ft_exp = mdc_exp;
336 target.ft_idx = tgt->ltd_idx;
338 fld_client_add_target(&lmv->lmv_fld, &target);
340 rc = obd_register_observer(mdc_obd, obd);
342 obd_disconnect(mdc_exp);
343 CERROR("target %s register_observer error %d\n",
344 tgt->ltd_uuid.uuid, rc);
348 if (obd->obd_observer) {
350 * Tell the observer about the new target.
352 rc = obd_notify(obd->obd_observer, mdc_exp->exp_obd,
355 obd_disconnect(mdc_exp);
361 tgt->ltd_exp = mdc_exp;
362 lmv->desc.ld_active_tgt_count++;
364 md_init_ea_size(tgt->ltd_exp, lmv->max_easize, lmv->max_def_easize);
366 CDEBUG(D_CONFIG, "Connected to %s(%s) successfully (%d)\n",
367 mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
368 atomic_read(&obd->obd_refcount));
370 if (lmv->targets_proc_entry != NULL) {
371 struct proc_dir_entry *mdc_symlink;
373 LASSERT(mdc_obd->obd_type != NULL);
374 LASSERT(mdc_obd->obd_type->typ_name != NULL);
375 mdc_symlink = lprocfs_add_symlink(mdc_obd->obd_name,
376 lmv->targets_proc_entry,
378 mdc_obd->obd_type->typ_name,
380 if (mdc_symlink == NULL) {
381 CERROR("cannot register LMV target "
382 "/proc/fs/lustre/%s/%s/target_obds/%s\n",
383 obd->obd_type->typ_name, obd->obd_name,
390 static void lmv_del_target(struct lmv_obd *lmv, int index)
392 if (lmv->tgts[index] == NULL)
395 OBD_FREE_PTR(lmv->tgts[index]);
396 lmv->tgts[index] = NULL;
400 static int lmv_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
401 __u32 index, int gen)
403 struct obd_device *mdc_obd;
404 struct lmv_obd *lmv = &obd->u.lmv;
405 struct lmv_tgt_desc *tgt;
406 int orig_tgt_count = 0;
410 CDEBUG(D_CONFIG, "Target uuid: %s. index %d\n", uuidp->uuid, index);
411 mdc_obd = class_find_client_obd(uuidp, LUSTRE_MDC_NAME,
414 CERROR("%s: Target %s not attached: rc = %d\n",
415 obd->obd_name, uuidp->uuid, -EINVAL);
419 mutex_lock(&lmv->lmv_init_mutex);
420 if ((index < lmv->tgts_size) && (lmv->tgts[index] != NULL)) {
421 tgt = lmv->tgts[index];
422 CERROR("%s: UUID %s already assigned at LOV target index %d:"
423 " rc = %d\n", obd->obd_name,
424 obd_uuid2str(&tgt->ltd_uuid), index, -EEXIST);
425 mutex_unlock(&lmv->lmv_init_mutex);
429 if (index >= lmv->tgts_size) {
430 /* We need to reallocate the lmv target array. */
431 struct lmv_tgt_desc **newtgts, **old = NULL;
435 while (newsize < index + 1)
436 newsize = newsize << 1;
437 OBD_ALLOC(newtgts, sizeof(*newtgts) * newsize);
438 if (newtgts == NULL) {
439 mutex_unlock(&lmv->lmv_init_mutex);
443 if (lmv->tgts_size) {
444 memcpy(newtgts, lmv->tgts,
445 sizeof(*newtgts) * lmv->tgts_size);
447 oldsize = lmv->tgts_size;
451 lmv->tgts_size = newsize;
454 OBD_FREE(old, sizeof(*old) * oldsize);
456 CDEBUG(D_CONFIG, "tgts: %p size: %d\n", lmv->tgts,
462 mutex_unlock(&lmv->lmv_init_mutex);
466 mutex_init(&tgt->ltd_fid_mutex);
467 tgt->ltd_idx = index;
468 tgt->ltd_uuid = *uuidp;
470 lmv->tgts[index] = tgt;
471 if (index >= lmv->desc.ld_tgt_count) {
472 orig_tgt_count = lmv->desc.ld_tgt_count;
473 lmv->desc.ld_tgt_count = index + 1;
476 if (lmv->connected == 0) {
477 /* lmv_check_connect() will connect this target. */
478 mutex_unlock(&lmv->lmv_init_mutex);
482 /* Otherwise let's connect it ourselves */
483 mutex_unlock(&lmv->lmv_init_mutex);
484 rc = lmv_connect_mdc(obd, tgt);
486 spin_lock(&lmv->lmv_lock);
487 if (lmv->desc.ld_tgt_count == index + 1)
488 lmv->desc.ld_tgt_count = orig_tgt_count;
489 memset(tgt, 0, sizeof(*tgt));
490 spin_unlock(&lmv->lmv_lock);
492 int easize = sizeof(struct lmv_stripe_md) +
493 lmv->desc.ld_tgt_count * sizeof(struct lu_fid);
494 lmv_init_ea_size(obd->obd_self_export, easize, 0);
500 static int lmv_check_connect(struct obd_device *obd)
502 struct lmv_obd *lmv = &obd->u.lmv;
503 struct lmv_tgt_desc *tgt;
512 mutex_lock(&lmv->lmv_init_mutex);
513 if (lmv->connected) {
514 mutex_unlock(&lmv->lmv_init_mutex);
518 if (lmv->desc.ld_tgt_count == 0) {
519 mutex_unlock(&lmv->lmv_init_mutex);
520 CERROR("%s: no targets configured.\n", obd->obd_name);
524 LASSERT(lmv->tgts != NULL);
526 if (lmv->tgts[0] == NULL) {
527 mutex_unlock(&lmv->lmv_init_mutex);
528 CERROR("%s: no target configured for index 0.\n",
533 CDEBUG(D_CONFIG, "Time to connect %s to %s\n",
534 lmv->cluuid.uuid, obd->obd_name);
536 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
540 rc = lmv_connect_mdc(obd, tgt);
546 easize = lmv_mds_md_size(lmv->desc.ld_tgt_count, LMV_MAGIC);
547 lmv_init_ea_size(obd->obd_self_export, easize, 0);
548 mutex_unlock(&lmv->lmv_init_mutex);
559 --lmv->desc.ld_active_tgt_count;
560 rc2 = obd_disconnect(tgt->ltd_exp);
562 CERROR("LMV target %s disconnect on "
563 "MDC idx %d: error %d\n",
564 tgt->ltd_uuid.uuid, i, rc2);
569 mutex_unlock(&lmv->lmv_init_mutex);
574 static int lmv_disconnect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
576 struct lmv_obd *lmv = &obd->u.lmv;
577 struct obd_device *mdc_obd;
581 LASSERT(tgt != NULL);
582 LASSERT(obd != NULL);
584 mdc_obd = class_exp2obd(tgt->ltd_exp);
587 mdc_obd->obd_force = obd->obd_force;
588 mdc_obd->obd_fail = obd->obd_fail;
589 mdc_obd->obd_no_recov = obd->obd_no_recov;
591 if (lmv->targets_proc_entry != NULL)
592 lprocfs_remove_proc_entry(mdc_obd->obd_name,
593 lmv->targets_proc_entry);
596 rc = obd_fid_fini(tgt->ltd_exp->exp_obd);
598 CERROR("Can't finanize fids factory\n");
600 CDEBUG(D_INFO, "Disconnected from %s(%s) successfully\n",
601 tgt->ltd_exp->exp_obd->obd_name,
602 tgt->ltd_exp->exp_obd->obd_uuid.uuid);
604 obd_register_observer(tgt->ltd_exp->exp_obd, NULL);
605 rc = obd_disconnect(tgt->ltd_exp);
607 if (tgt->ltd_active) {
608 CERROR("Target %s disconnect error %d\n",
609 tgt->ltd_uuid.uuid, rc);
613 lmv_activate_target(lmv, tgt, 0);
618 static int lmv_disconnect(struct obd_export *exp)
620 struct obd_device *obd = class_exp2obd(exp);
621 struct lmv_obd *lmv = &obd->u.lmv;
629 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
630 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
633 lmv_disconnect_mdc(obd, lmv->tgts[i]);
636 if (lmv->targets_proc_entry != NULL)
637 lprocfs_remove(&lmv->targets_proc_entry);
639 CERROR("/proc/fs/lustre/%s/%s/target_obds missing\n",
640 obd->obd_type->typ_name, obd->obd_name);
644 * This is the case when no real connection is established by
645 * lmv_check_connect().
648 class_export_put(exp);
649 rc = class_disconnect(exp);
655 static int lmv_fid2path(struct obd_export *exp, int len, void *karg,
658 struct obd_device *obddev = class_exp2obd(exp);
659 struct lmv_obd *lmv = &obddev->u.lmv;
660 struct getinfo_fid2path *gf;
661 struct lmv_tgt_desc *tgt;
662 struct getinfo_fid2path *remote_gf = NULL;
663 struct lu_fid root_fid;
664 int remote_gf_size = 0;
668 tgt = lmv_find_target(lmv, &gf->gf_fid);
670 RETURN(PTR_ERR(tgt));
672 root_fid = *gf->gf_u.gf_root_fid;
673 LASSERT(fid_is_sane(&root_fid));
676 rc = obd_iocontrol(OBD_IOC_FID2PATH, tgt->ltd_exp, len, gf, uarg);
677 if (rc != 0 && rc != -EREMOTE)
678 GOTO(out_fid2path, rc);
680 /* If remote_gf != NULL, it means just building the
681 * path on the remote MDT, copy this path segement to gf */
682 if (remote_gf != NULL) {
683 struct getinfo_fid2path *ori_gf;
686 ori_gf = (struct getinfo_fid2path *)karg;
687 if (strlen(ori_gf->gf_u.gf_path) +
688 strlen(gf->gf_u.gf_path) > ori_gf->gf_pathlen)
689 GOTO(out_fid2path, rc = -EOVERFLOW);
691 ptr = ori_gf->gf_u.gf_path;
693 memmove(ptr + strlen(gf->gf_u.gf_path) + 1, ptr,
694 strlen(ori_gf->gf_u.gf_path));
696 strncpy(ptr, gf->gf_u.gf_path,
697 strlen(gf->gf_u.gf_path));
698 ptr += strlen(gf->gf_u.gf_path);
702 CDEBUG(D_INFO, "%s: get path %s "DFID" rec: %llu ln: %u\n",
703 tgt->ltd_exp->exp_obd->obd_name,
704 gf->gf_u.gf_path, PFID(&gf->gf_fid), gf->gf_recno,
708 GOTO(out_fid2path, rc);
710 /* sigh, has to go to another MDT to do path building further */
711 if (remote_gf == NULL) {
712 remote_gf_size = sizeof(*remote_gf) + PATH_MAX;
713 OBD_ALLOC(remote_gf, remote_gf_size);
714 if (remote_gf == NULL)
715 GOTO(out_fid2path, rc = -ENOMEM);
716 remote_gf->gf_pathlen = PATH_MAX;
719 if (!fid_is_sane(&gf->gf_fid)) {
720 CERROR("%s: invalid FID "DFID": rc = %d\n",
721 tgt->ltd_exp->exp_obd->obd_name,
722 PFID(&gf->gf_fid), -EINVAL);
723 GOTO(out_fid2path, rc = -EINVAL);
726 tgt = lmv_find_target(lmv, &gf->gf_fid);
728 GOTO(out_fid2path, rc = -EINVAL);
730 remote_gf->gf_fid = gf->gf_fid;
731 remote_gf->gf_recno = -1;
732 remote_gf->gf_linkno = -1;
733 memset(remote_gf->gf_u.gf_path, 0, remote_gf->gf_pathlen);
734 *remote_gf->gf_u.gf_root_fid = root_fid;
736 goto repeat_fid2path;
739 if (remote_gf != NULL)
740 OBD_FREE(remote_gf, remote_gf_size);
744 static int lmv_hsm_req_count(struct lmv_obd *lmv,
745 const struct hsm_user_request *hur,
746 const struct lmv_tgt_desc *tgt_mds)
750 struct lmv_tgt_desc *curr_tgt;
752 /* count how many requests must be sent to the given target */
753 for (i = 0; i < hur->hur_request.hr_itemcount; i++) {
754 curr_tgt = lmv_find_target(lmv, &hur->hur_user_item[i].hui_fid);
755 if (IS_ERR(curr_tgt))
756 RETURN(PTR_ERR(curr_tgt));
757 if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid))
763 static int lmv_hsm_req_build(struct lmv_obd *lmv,
764 struct hsm_user_request *hur_in,
765 const struct lmv_tgt_desc *tgt_mds,
766 struct hsm_user_request *hur_out)
769 struct lmv_tgt_desc *curr_tgt;
771 /* build the hsm_user_request for the given target */
772 hur_out->hur_request = hur_in->hur_request;
774 for (i = 0; i < hur_in->hur_request.hr_itemcount; i++) {
775 curr_tgt = lmv_find_target(lmv,
776 &hur_in->hur_user_item[i].hui_fid);
777 if (IS_ERR(curr_tgt))
778 RETURN(PTR_ERR(curr_tgt));
779 if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid)) {
780 hur_out->hur_user_item[nr_out] =
781 hur_in->hur_user_item[i];
785 hur_out->hur_request.hr_itemcount = nr_out;
786 memcpy(hur_data(hur_out), hur_data(hur_in),
787 hur_in->hur_request.hr_data_len);
792 static int lmv_hsm_ct_unregister(struct lmv_obd *lmv, unsigned int cmd, int len,
793 struct lustre_kernelcomm *lk,
800 /* unregister request (call from llapi_hsm_copytool_fini) */
801 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
802 struct lmv_tgt_desc *tgt = lmv->tgts[i];
804 if (tgt == NULL || tgt->ltd_exp == NULL)
806 /* best effort: try to clean as much as possible
807 * (continue on error) */
808 obd_iocontrol(cmd, tgt->ltd_exp, len, lk, uarg);
811 /* Whatever the result, remove copytool from kuc groups.
812 * Unreached coordinators will get EPIPE on next requests
813 * and will unregister automatically.
815 rc = libcfs_kkuc_group_rem(lk->lk_uid, lk->lk_group);
820 static int lmv_hsm_ct_register(struct lmv_obd *lmv, unsigned int cmd, int len,
821 struct lustre_kernelcomm *lk, __user void *uarg)
826 bool any_set = false;
827 struct kkuc_ct_data kcd = { 0 };
830 /* All or nothing: try to register to all MDS.
831 * In case of failure, unregister from previous MDS,
832 * except if it because of inactive target. */
833 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
834 struct lmv_tgt_desc *tgt = lmv->tgts[i];
836 if (tgt == NULL || tgt->ltd_exp == NULL)
838 err = obd_iocontrol(cmd, tgt->ltd_exp, len, lk, uarg);
840 if (tgt->ltd_active) {
841 /* permanent error */
842 CERROR("%s: iocontrol MDC %s on MDT"
843 " idx %d cmd %x: err = %d\n",
844 lmv2obd_dev(lmv)->obd_name,
845 tgt->ltd_uuid.uuid, i, cmd, err);
847 lk->lk_flags |= LK_FLG_STOP;
848 /* unregister from previous MDS */
849 for (j = 0; j < i; j++) {
851 if (tgt == NULL || tgt->ltd_exp == NULL)
853 obd_iocontrol(cmd, tgt->ltd_exp, len,
858 /* else: transient error.
859 * kuc will register to the missing MDT
867 /* no registration done: return error */
870 /* at least one registration done, with no failure */
871 filp = fget(lk->lk_wfd);
875 kcd.kcd_magic = KKUC_CT_DATA_MAGIC;
876 kcd.kcd_uuid = lmv->cluuid;
877 kcd.kcd_archive = lk->lk_data;
879 rc = libcfs_kkuc_group_add(filp, lk->lk_uid, lk->lk_group,
890 static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp,
891 int len, void *karg, void __user *uarg)
893 struct obd_device *obddev = class_exp2obd(exp);
894 struct lmv_obd *lmv = &obddev->u.lmv;
895 struct lmv_tgt_desc *tgt = NULL;
899 __u32 count = lmv->desc.ld_tgt_count;
906 case IOC_OBD_STATFS: {
907 struct obd_ioctl_data *data = karg;
908 struct obd_device *mdc_obd;
909 struct obd_statfs stat_buf = {0};
912 memcpy(&index, data->ioc_inlbuf2, sizeof(__u32));
913 if ((index >= count))
916 tgt = lmv->tgts[index];
917 if (tgt == NULL || !tgt->ltd_active)
920 mdc_obd = class_exp2obd(tgt->ltd_exp);
925 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(mdc_obd),
926 min((int) data->ioc_plen2,
927 (int) sizeof(struct obd_uuid))))
930 rc = obd_statfs(NULL, tgt->ltd_exp, &stat_buf,
931 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
935 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
936 min((int) data->ioc_plen1,
937 (int) sizeof(stat_buf))))
941 case OBD_IOC_QUOTACTL: {
942 struct if_quotactl *qctl = karg;
943 struct obd_quotactl *oqctl;
945 if (qctl->qc_valid == QC_MDTIDX) {
946 if (count <= qctl->qc_idx)
949 tgt = lmv->tgts[qctl->qc_idx];
950 if (tgt == NULL || tgt->ltd_exp == NULL)
952 } else if (qctl->qc_valid == QC_UUID) {
953 for (i = 0; i < count; i++) {
957 if (!obd_uuid_equals(&tgt->ltd_uuid,
961 if (tgt->ltd_exp == NULL)
973 LASSERT(tgt != NULL && tgt->ltd_exp != NULL);
974 OBD_ALLOC_PTR(oqctl);
978 QCTL_COPY(oqctl, qctl);
979 rc = obd_quotactl(tgt->ltd_exp, oqctl);
981 QCTL_COPY(qctl, oqctl);
982 qctl->qc_valid = QC_MDTIDX;
983 qctl->obd_uuid = tgt->ltd_uuid;
988 case LL_IOC_GET_CONNECT_FLAGS: {
990 if (tgt == NULL || tgt->ltd_exp == NULL)
992 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
995 case LL_IOC_FID2MDTIDX: {
996 struct lu_fid *fid = karg;
999 rc = lmv_fld_lookup(lmv, fid, &mdt_index);
1003 /* Note: this is from llite(see ll_dir_ioctl()), @uarg does not
1004 * point to user space memory for FID2MDTIDX. */
1005 *(__u32 *)uarg = mdt_index;
1008 case OBD_IOC_FID2PATH: {
1009 rc = lmv_fid2path(exp, len, karg, uarg);
1012 case LL_IOC_HSM_STATE_GET:
1013 case LL_IOC_HSM_STATE_SET:
1014 case LL_IOC_HSM_ACTION: {
1015 struct md_op_data *op_data = karg;
1017 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1019 RETURN(PTR_ERR(tgt));
1021 if (tgt->ltd_exp == NULL)
1024 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1027 case LL_IOC_HSM_PROGRESS: {
1028 const struct hsm_progress_kernel *hpk = karg;
1030 tgt = lmv_find_target(lmv, &hpk->hpk_fid);
1032 RETURN(PTR_ERR(tgt));
1033 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1036 case LL_IOC_HSM_REQUEST: {
1037 struct hsm_user_request *hur = karg;
1038 unsigned int reqcount = hur->hur_request.hr_itemcount;
1043 /* if the request is about a single fid
1044 * or if there is a single MDS, no need to split
1046 if (reqcount == 1 || count == 1) {
1047 tgt = lmv_find_target(lmv,
1048 &hur->hur_user_item[0].hui_fid);
1050 RETURN(PTR_ERR(tgt));
1051 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1053 /* split fid list to their respective MDS */
1054 for (i = 0; i < count; i++) {
1057 struct hsm_user_request *req;
1060 if (tgt == NULL || tgt->ltd_exp == NULL)
1063 nr = lmv_hsm_req_count(lmv, hur, tgt);
1066 if (nr == 0) /* nothing for this MDS */
1069 /* build a request with fids for this MDS */
1070 reqlen = offsetof(typeof(*hur),
1072 + hur->hur_request.hr_data_len;
1073 OBD_ALLOC_LARGE(req, reqlen);
1076 rc1 = lmv_hsm_req_build(lmv, hur, tgt, req);
1078 GOTO(hsm_req_err, rc1);
1079 rc1 = obd_iocontrol(cmd, tgt->ltd_exp, reqlen,
1082 if (rc1 != 0 && rc == 0)
1084 OBD_FREE_LARGE(req, reqlen);
1089 case LL_IOC_LOV_SWAP_LAYOUTS: {
1090 struct md_op_data *op_data = karg;
1091 struct lmv_tgt_desc *tgt1, *tgt2;
1093 tgt1 = lmv_find_target(lmv, &op_data->op_fid1);
1095 RETURN(PTR_ERR(tgt1));
1097 tgt2 = lmv_find_target(lmv, &op_data->op_fid2);
1099 RETURN(PTR_ERR(tgt2));
1101 if ((tgt1->ltd_exp == NULL) || (tgt2->ltd_exp == NULL))
1104 /* only files on same MDT can have their layouts swapped */
1105 if (tgt1->ltd_idx != tgt2->ltd_idx)
1108 rc = obd_iocontrol(cmd, tgt1->ltd_exp, len, karg, uarg);
1111 case LL_IOC_HSM_CT_START: {
1112 struct lustre_kernelcomm *lk = karg;
1113 if (lk->lk_flags & LK_FLG_STOP)
1114 rc = lmv_hsm_ct_unregister(lmv, cmd, len, lk, uarg);
1116 rc = lmv_hsm_ct_register(lmv, cmd, len, lk, uarg);
1120 for (i = 0; i < count; i++) {
1121 struct obd_device *mdc_obd;
1125 if (tgt == NULL || tgt->ltd_exp == NULL)
1127 /* ll_umount_begin() sets force flag but for lmv, not
1128 * mdc. Let's pass it through */
1129 mdc_obd = class_exp2obd(tgt->ltd_exp);
1130 mdc_obd->obd_force = obddev->obd_force;
1131 err = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1133 if (tgt->ltd_active) {
1134 CERROR("error: iocontrol MDC %s on MDT"
1135 " idx %d cmd %x: err = %d\n",
1136 tgt->ltd_uuid.uuid, i, cmd, err);
1150 * This is _inode_ placement policy function (not name).
1152 static int lmv_placement_policy(struct obd_device *obd,
1153 struct md_op_data *op_data, u32 *mds)
1155 struct lmv_obd *lmv = &obd->u.lmv;
1156 struct lmv_user_md *lum;
1160 LASSERT(mds != NULL);
1162 if (lmv->desc.ld_tgt_count == 1) {
1167 lum = op_data->op_data;
1169 * 1. See if the stripe offset is specified by lum.
1170 * 2. Then check if there is default stripe offset.
1171 * 3. Finally choose MDS by name hash if the parent
1172 * is striped directory. (see lmv_locate_mds()). */
1173 if (op_data->op_cli_flags & CLI_SET_MEA && lum != NULL &&
1174 le32_to_cpu(lum->lum_stripe_offset) != (__u32)-1) {
1175 *mds = le32_to_cpu(lum->lum_stripe_offset);
1176 } else if (op_data->op_default_stripe_offset != (__u32)-1) {
1177 *mds = op_data->op_default_stripe_offset;
1178 op_data->op_mds = *mds;
1179 /* Correct the stripe offset in lum */
1181 lum->lum_stripe_offset = cpu_to_le32(*mds);
1183 *mds = op_data->op_mds;
1189 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds)
1191 struct lmv_tgt_desc *tgt;
1195 tgt = lmv_get_target(lmv, mds, NULL);
1197 RETURN(PTR_ERR(tgt));
1200 * New seq alloc and FLD setup should be atomic. Otherwise we may find
1201 * on server that seq in new allocated fid is not yet known.
1203 mutex_lock(&tgt->ltd_fid_mutex);
1205 if (tgt->ltd_active == 0 || tgt->ltd_exp == NULL)
1206 GOTO(out, rc = -ENODEV);
1209 * Asking underlying tgt layer to allocate new fid.
1211 rc = obd_fid_alloc(NULL, tgt->ltd_exp, fid, NULL);
1213 LASSERT(fid_is_sane(fid));
1219 mutex_unlock(&tgt->ltd_fid_mutex);
1223 int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp,
1224 struct lu_fid *fid, struct md_op_data *op_data)
1226 struct obd_device *obd = class_exp2obd(exp);
1227 struct lmv_obd *lmv = &obd->u.lmv;
1232 LASSERT(op_data != NULL);
1233 LASSERT(fid != NULL);
1235 rc = lmv_placement_policy(obd, op_data, &mds);
1237 CERROR("Can't get target for allocating fid, "
1242 rc = __lmv_fid_alloc(lmv, fid, mds);
1244 CERROR("Can't alloc new fid, rc %d\n", rc);
1251 static int lmv_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
1253 struct lmv_obd *lmv = &obd->u.lmv;
1254 struct lmv_desc *desc;
1258 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
1259 CERROR("LMV setup requires a descriptor\n");
1263 desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1);
1264 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
1265 CERROR("Lmv descriptor size wrong: %d > %d\n",
1266 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
1270 lmv->tgts_size = 32U;
1271 OBD_ALLOC(lmv->tgts, sizeof(*lmv->tgts) * lmv->tgts_size);
1272 if (lmv->tgts == NULL)
1275 obd_str2uuid(&lmv->desc.ld_uuid, desc->ld_uuid.uuid);
1276 lmv->desc.ld_tgt_count = 0;
1277 lmv->desc.ld_active_tgt_count = 0;
1278 lmv->max_def_easize = 0;
1279 lmv->max_easize = 0;
1281 spin_lock_init(&lmv->lmv_lock);
1282 mutex_init(&lmv->lmv_init_mutex);
1284 #ifdef CONFIG_PROC_FS
1285 obd->obd_vars = lprocfs_lmv_obd_vars;
1286 lprocfs_obd_setup(obd, true);
1287 lprocfs_alloc_md_stats(obd, 0);
1288 rc = lprocfs_seq_create(obd->obd_proc_entry, "target_obd",
1289 0444, &lmv_proc_target_fops, obd);
1291 CWARN("%s: error adding LMV target_obd file: rc = %d\n",
1294 rc = fld_client_init(&lmv->lmv_fld, obd->obd_name,
1295 LUSTRE_CLI_FLD_HASH_DHT);
1297 CERROR("Can't init FLD, err %d\n", rc);
1307 static int lmv_cleanup(struct obd_device *obd)
1309 struct lmv_obd *lmv = &obd->u.lmv;
1312 fld_client_fini(&lmv->lmv_fld);
1313 if (lmv->tgts != NULL) {
1315 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1316 if (lmv->tgts[i] == NULL)
1318 lmv_del_target(lmv, i);
1320 OBD_FREE(lmv->tgts, sizeof(*lmv->tgts) * lmv->tgts_size);
1326 static int lmv_process_config(struct obd_device *obd, size_t len, void *buf)
1328 struct lustre_cfg *lcfg = buf;
1329 struct obd_uuid obd_uuid;
1335 switch (lcfg->lcfg_command) {
1337 /* modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDT0000_UUID
1338 * 2:0 3:1 4:lustre-MDT0000-mdc_UUID */
1339 if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid))
1340 GOTO(out, rc = -EINVAL);
1342 obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1));
1344 if (sscanf(lustre_cfg_buf(lcfg, 2), "%u", &index) != 1)
1345 GOTO(out, rc = -EINVAL);
1346 if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", &gen) != 1)
1347 GOTO(out, rc = -EINVAL);
1348 rc = lmv_add_target(obd, &obd_uuid, index, gen);
1351 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1352 GOTO(out, rc = -EINVAL);
1358 static int lmv_statfs(const struct lu_env *env, struct obd_export *exp,
1359 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
1361 struct obd_device *obd = class_exp2obd(exp);
1362 struct lmv_obd *lmv = &obd->u.lmv;
1363 struct obd_statfs *temp;
1368 OBD_ALLOC(temp, sizeof(*temp));
1372 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1373 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1376 rc = obd_statfs(env, lmv->tgts[i]->ltd_exp, temp,
1379 CERROR("can't stat MDS #%d (%s), error %d\n", i,
1380 lmv->tgts[i]->ltd_exp->exp_obd->obd_name,
1382 GOTO(out_free_temp, rc);
1387 /* If the statfs is from mount, it will needs
1388 * retrieve necessary information from MDT0.
1389 * i.e. mount does not need the merged osfs
1391 * And also clients can be mounted as long as
1392 * MDT0 is in service*/
1393 if (flags & OBD_STATFS_FOR_MDT0)
1394 GOTO(out_free_temp, rc);
1396 osfs->os_bavail += temp->os_bavail;
1397 osfs->os_blocks += temp->os_blocks;
1398 osfs->os_ffree += temp->os_ffree;
1399 osfs->os_files += temp->os_files;
1405 OBD_FREE(temp, sizeof(*temp));
1409 static int lmv_get_root(struct obd_export *exp, const char *fileset,
1412 struct obd_device *obd = exp->exp_obd;
1413 struct lmv_obd *lmv = &obd->u.lmv;
1417 rc = md_get_root(lmv->tgts[0]->ltd_exp, fileset, fid);
1421 static int lmv_getxattr(struct obd_export *exp, const struct lu_fid *fid,
1422 u64 valid, const char *name,
1423 const char *input, int input_size, int output_size,
1424 int flags, struct ptlrpc_request **request)
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_getxattr(tgt->ltd_exp, fid, valid, name, input,
1437 input_size, output_size, flags, request);
1442 static int lmv_setxattr(struct obd_export *exp, const struct lu_fid *fid,
1443 u64 valid, const char *name,
1444 const char *input, int input_size, int output_size,
1445 int flags, __u32 suppgid,
1446 struct ptlrpc_request **request)
1448 struct obd_device *obd = exp->exp_obd;
1449 struct lmv_obd *lmv = &obd->u.lmv;
1450 struct lmv_tgt_desc *tgt;
1454 tgt = lmv_find_target(lmv, fid);
1456 RETURN(PTR_ERR(tgt));
1458 rc = md_setxattr(tgt->ltd_exp, fid, valid, name, input,
1459 input_size, output_size, flags, suppgid,
1465 static int lmv_getattr(struct obd_export *exp, struct md_op_data *op_data,
1466 struct ptlrpc_request **request)
1468 struct obd_device *obd = exp->exp_obd;
1469 struct lmv_obd *lmv = &obd->u.lmv;
1470 struct lmv_tgt_desc *tgt;
1474 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1476 RETURN(PTR_ERR(tgt));
1478 if (op_data->op_flags & MF_GET_MDT_IDX) {
1479 op_data->op_mds = tgt->ltd_idx;
1483 rc = md_getattr(tgt->ltd_exp, op_data, request);
1488 static int lmv_null_inode(struct obd_export *exp, const struct lu_fid *fid)
1490 struct obd_device *obd = exp->exp_obd;
1491 struct lmv_obd *lmv = &obd->u.lmv;
1495 CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid));
1498 * With DNE every object can have two locks in different namespaces:
1499 * lookup lock in space of MDT storing direntry and update/open lock in
1500 * space of MDT storing inode.
1502 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1503 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1505 md_null_inode(lmv->tgts[i]->ltd_exp, fid);
1511 static int lmv_close(struct obd_export *exp, struct md_op_data *op_data,
1512 struct md_open_data *mod, struct ptlrpc_request **request)
1514 struct obd_device *obd = exp->exp_obd;
1515 struct lmv_obd *lmv = &obd->u.lmv;
1516 struct lmv_tgt_desc *tgt;
1520 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1522 RETURN(PTR_ERR(tgt));
1524 CDEBUG(D_INODE, "CLOSE "DFID"\n", PFID(&op_data->op_fid1));
1525 rc = md_close(tgt->ltd_exp, op_data, mod, request);
1530 * Choosing the MDT by name or FID in @op_data.
1531 * For non-striped directory, it will locate MDT by fid.
1532 * For striped-directory, it will locate MDT by name. And also
1533 * it will reset op_fid1 with the FID of the choosen stripe.
1535 struct lmv_tgt_desc *
1536 lmv_locate_target_for_name(struct lmv_obd *lmv, struct lmv_stripe_md *lsm,
1537 const char *name, int namelen, struct lu_fid *fid,
1540 struct lmv_tgt_desc *tgt;
1541 const struct lmv_oinfo *oinfo;
1543 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_NAME_HASH)) {
1544 if (cfs_fail_val >= lsm->lsm_md_stripe_count)
1545 RETURN(ERR_PTR(-EBADF));
1546 oinfo = &lsm->lsm_md_oinfo[cfs_fail_val];
1548 oinfo = lsm_name_to_stripe_info(lsm, name, namelen);
1550 RETURN(ERR_CAST(oinfo));
1554 *fid = oinfo->lmo_fid;
1556 *mds = oinfo->lmo_mds;
1558 tgt = lmv_get_target(lmv, oinfo->lmo_mds, NULL);
1560 CDEBUG(D_INFO, "locate on mds %u "DFID"\n", oinfo->lmo_mds,
1561 PFID(&oinfo->lmo_fid));
1566 * Locate mds by fid or name
1568 * For striped directory (lsm != NULL), it will locate the stripe
1569 * by name hash (see lsm_name_to_stripe_info()). Note: if the hash_type
1570 * is unknown, it will return -EBADFD, and lmv_intent_lookup might need
1571 * walk through all of stripes to locate the entry.
1573 * For normal direcotry, it will locate MDS by FID directly.
1574 * \param[in] lmv LMV device
1575 * \param[in] op_data client MD stack parameters, name, namelen
1577 * \param[in] fid object FID used to locate MDS.
1579 * retval pointer to the lmv_tgt_desc if succeed.
1580 * ERR_PTR(errno) if failed.
1582 struct lmv_tgt_desc*
1583 lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
1586 struct lmv_stripe_md *lsm = op_data->op_mea1;
1587 struct lmv_tgt_desc *tgt;
1589 /* During creating VOLATILE file, it should honor the mdt
1590 * index if the file under striped dir is being restored, see
1592 if (op_data->op_bias & MDS_CREATE_VOLATILE &&
1593 (int)op_data->op_mds != -1) {
1595 tgt = lmv_get_target(lmv, op_data->op_mds, NULL);
1600 /* refill the right parent fid */
1601 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1602 struct lmv_oinfo *oinfo;
1604 oinfo = &lsm->lsm_md_oinfo[i];
1605 if (oinfo->lmo_mds == op_data->op_mds) {
1606 *fid = oinfo->lmo_fid;
1611 if (i == lsm->lsm_md_stripe_count)
1612 *fid = lsm->lsm_md_oinfo[0].lmo_fid;
1618 if (lsm == NULL || op_data->op_namelen == 0) {
1619 tgt = lmv_find_target(lmv, fid);
1623 op_data->op_mds = tgt->ltd_idx;
1627 return lmv_locate_target_for_name(lmv, lsm, op_data->op_name,
1628 op_data->op_namelen, fid,
1632 int lmv_create(struct obd_export *exp, struct md_op_data *op_data,
1633 const void *data, size_t datalen, umode_t mode, uid_t uid,
1634 gid_t gid, cfs_cap_t cap_effective, __u64 rdev,
1635 struct ptlrpc_request **request)
1637 struct obd_device *obd = exp->exp_obd;
1638 struct lmv_obd *lmv = &obd->u.lmv;
1639 struct lmv_tgt_desc *tgt;
1643 if (!lmv->desc.ld_active_tgt_count)
1646 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1648 RETURN(PTR_ERR(tgt));
1650 CDEBUG(D_INODE, "CREATE name '%.*s' on "DFID" -> mds #%x\n",
1651 (int)op_data->op_namelen, op_data->op_name,
1652 PFID(&op_data->op_fid1), op_data->op_mds);
1654 rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
1657 if (exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE) {
1658 /* Send the create request to the MDT where the object
1659 * will be located */
1660 tgt = lmv_find_target(lmv, &op_data->op_fid2);
1662 RETURN(PTR_ERR(tgt));
1664 op_data->op_mds = tgt->ltd_idx;
1666 CDEBUG(D_CONFIG, "Server doesn't support striped dirs\n");
1669 CDEBUG(D_INODE, "CREATE obj "DFID" -> mds #%x\n",
1670 PFID(&op_data->op_fid2), op_data->op_mds);
1672 op_data->op_flags |= MF_MDC_CANCEL_FID1;
1673 rc = md_create(tgt->ltd_exp, op_data, data, datalen, mode, uid, gid,
1674 cap_effective, rdev, request);
1676 if (*request == NULL)
1678 CDEBUG(D_INODE, "Created - "DFID"\n", PFID(&op_data->op_fid2));
1684 lmv_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
1685 const union ldlm_policy_data *policy, struct md_op_data *op_data,
1686 struct lustre_handle *lockh, __u64 extra_lock_flags)
1688 struct obd_device *obd = exp->exp_obd;
1689 struct lmv_obd *lmv = &obd->u.lmv;
1690 struct lmv_tgt_desc *tgt;
1694 CDEBUG(D_INODE, "ENQUEUE on "DFID"\n", PFID(&op_data->op_fid1));
1696 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1698 RETURN(PTR_ERR(tgt));
1700 CDEBUG(D_INODE, "ENQUEUE on "DFID" -> mds #%u\n",
1701 PFID(&op_data->op_fid1), tgt->ltd_idx);
1703 rc = md_enqueue(tgt->ltd_exp, einfo, policy, op_data, lockh,
1710 lmv_getattr_name(struct obd_export *exp,struct md_op_data *op_data,
1711 struct ptlrpc_request **preq)
1713 struct ptlrpc_request *req = NULL;
1714 struct obd_device *obd = exp->exp_obd;
1715 struct lmv_obd *lmv = &obd->u.lmv;
1716 struct lmv_tgt_desc *tgt;
1717 struct mdt_body *body;
1721 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1723 RETURN(PTR_ERR(tgt));
1725 CDEBUG(D_INODE, "GETATTR_NAME for %*s on "DFID" -> mds #%d\n",
1726 (int)op_data->op_namelen, op_data->op_name,
1727 PFID(&op_data->op_fid1), tgt->ltd_idx);
1729 rc = md_getattr_name(tgt->ltd_exp, op_data, preq);
1733 body = req_capsule_server_get(&(*preq)->rq_pill, &RMF_MDT_BODY);
1734 LASSERT(body != NULL);
1736 if (body->mbo_valid & OBD_MD_MDS) {
1737 struct lu_fid rid = body->mbo_fid1;
1738 CDEBUG(D_INODE, "Request attrs for "DFID"\n",
1741 tgt = lmv_find_target(lmv, &rid);
1743 ptlrpc_req_finished(*preq);
1745 RETURN(PTR_ERR(tgt));
1748 op_data->op_fid1 = rid;
1749 op_data->op_valid |= OBD_MD_FLCROSSREF;
1750 op_data->op_namelen = 0;
1751 op_data->op_name = NULL;
1752 rc = md_getattr_name(tgt->ltd_exp, op_data, &req);
1753 ptlrpc_req_finished(*preq);
1760 #define md_op_data_fid(op_data, fl) \
1761 (fl == MF_MDC_CANCEL_FID1 ? &op_data->op_fid1 : \
1762 fl == MF_MDC_CANCEL_FID2 ? &op_data->op_fid2 : \
1763 fl == MF_MDC_CANCEL_FID3 ? &op_data->op_fid3 : \
1764 fl == MF_MDC_CANCEL_FID4 ? &op_data->op_fid4 : \
1767 static int lmv_early_cancel(struct obd_export *exp, struct lmv_tgt_desc *tgt,
1768 struct md_op_data *op_data, __u32 op_tgt,
1769 enum ldlm_mode mode, int bits, int flag)
1771 struct lu_fid *fid = md_op_data_fid(op_data, flag);
1772 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
1773 union ldlm_policy_data policy = { { 0 } };
1777 if (!fid_is_sane(fid))
1781 tgt = lmv_find_target(lmv, fid);
1783 RETURN(PTR_ERR(tgt));
1786 if (tgt->ltd_idx != op_tgt) {
1787 CDEBUG(D_INODE, "EARLY_CANCEL on "DFID"\n", PFID(fid));
1788 policy.l_inodebits.bits = bits;
1789 rc = md_cancel_unused(tgt->ltd_exp, fid, &policy,
1790 mode, LCF_ASYNC, NULL);
1793 "EARLY_CANCEL skip operation target %d on "DFID"\n",
1795 op_data->op_flags |= flag;
1803 * llite passes fid of an target inode in op_data->op_fid1 and id of directory in
1806 static int lmv_link(struct obd_export *exp, struct md_op_data *op_data,
1807 struct ptlrpc_request **request)
1809 struct obd_device *obd = exp->exp_obd;
1810 struct lmv_obd *lmv = &obd->u.lmv;
1811 struct lmv_tgt_desc *tgt;
1815 LASSERT(op_data->op_namelen != 0);
1817 CDEBUG(D_INODE, "LINK "DFID":%*s to "DFID"\n",
1818 PFID(&op_data->op_fid2), (int)op_data->op_namelen,
1819 op_data->op_name, PFID(&op_data->op_fid1));
1821 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
1822 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
1823 op_data->op_cap = cfs_curproc_cap_pack();
1824 if (op_data->op_mea2 != NULL) {
1825 struct lmv_stripe_md *lsm = op_data->op_mea2;
1826 const struct lmv_oinfo *oinfo;
1828 oinfo = lsm_name_to_stripe_info(lsm, op_data->op_name,
1829 op_data->op_namelen);
1831 RETURN(PTR_ERR(oinfo));
1833 op_data->op_fid2 = oinfo->lmo_fid;
1836 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
1838 RETURN(PTR_ERR(tgt));
1841 * Cancel UPDATE lock on child (fid1).
1843 op_data->op_flags |= MF_MDC_CANCEL_FID2;
1844 rc = lmv_early_cancel(exp, NULL, op_data, tgt->ltd_idx, LCK_EX,
1845 MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1);
1849 rc = md_link(tgt->ltd_exp, op_data, request);
1854 static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data,
1855 const char *old, size_t oldlen,
1856 const char *new, size_t newlen,
1857 struct ptlrpc_request **request)
1859 struct obd_device *obd = exp->exp_obd;
1860 struct lmv_obd *lmv = &obd->u.lmv;
1861 struct lmv_tgt_desc *src_tgt;
1862 struct lmv_tgt_desc *tgt_tgt;
1863 struct obd_export *target_exp;
1864 struct mdt_body *body;
1868 LASSERT(oldlen != 0);
1870 CDEBUG(D_INODE, "RENAME %.*s in "DFID":%d to %.*s in "DFID":%d\n",
1871 (int)oldlen, old, PFID(&op_data->op_fid1),
1872 op_data->op_mea1 ? op_data->op_mea1->lsm_md_stripe_count : 0,
1873 (int)newlen, new, PFID(&op_data->op_fid2),
1874 op_data->op_mea2 ? op_data->op_mea2->lsm_md_stripe_count : 0);
1876 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
1877 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
1878 op_data->op_cap = cfs_curproc_cap_pack();
1879 if (op_data->op_cli_flags & CLI_MIGRATE) {
1880 LASSERTF(fid_is_sane(&op_data->op_fid3), "invalid FID "DFID"\n",
1881 PFID(&op_data->op_fid3));
1883 if (op_data->op_mea1 != NULL) {
1884 struct lmv_stripe_md *lsm = op_data->op_mea1;
1885 struct lmv_tgt_desc *tmp;
1887 /* Fix the parent fid for striped dir */
1888 tmp = lmv_locate_target_for_name(lmv, lsm, old,
1893 RETURN(PTR_ERR(tmp));
1896 rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
1900 src_tgt = lmv_find_target(lmv, &op_data->op_fid3);
1901 if (IS_ERR(src_tgt))
1902 RETURN(PTR_ERR(src_tgt));
1904 target_exp = src_tgt->ltd_exp;
1906 if (op_data->op_mea1 != NULL) {
1907 struct lmv_stripe_md *lsm = op_data->op_mea1;
1909 src_tgt = lmv_locate_target_for_name(lmv, lsm, old,
1914 src_tgt = lmv_find_target(lmv, &op_data->op_fid1);
1916 if (IS_ERR(src_tgt))
1917 RETURN(PTR_ERR(src_tgt));
1920 if (op_data->op_mea2 != NULL) {
1921 struct lmv_stripe_md *lsm = op_data->op_mea2;
1923 tgt_tgt = lmv_locate_target_for_name(lmv, lsm, new,
1928 tgt_tgt = lmv_find_target(lmv, &op_data->op_fid2);
1931 if (IS_ERR(tgt_tgt))
1932 RETURN(PTR_ERR(tgt_tgt));
1934 target_exp = tgt_tgt->ltd_exp;
1938 * LOOKUP lock on src child (fid3) should also be cancelled for
1939 * src_tgt in mdc_rename.
1941 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
1944 * Cancel UPDATE locks on tgt parent (fid2), tgt_tgt is its
1947 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
1948 LCK_EX, MDS_INODELOCK_UPDATE,
1949 MF_MDC_CANCEL_FID2);
1954 * Cancel LOOKUP locks on source child (fid3) for parent tgt_tgt.
1956 if (fid_is_sane(&op_data->op_fid3)) {
1957 struct lmv_tgt_desc *tgt;
1959 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1961 RETURN(PTR_ERR(tgt));
1963 /* Cancel LOOKUP lock on its parent */
1964 rc = lmv_early_cancel(exp, tgt, op_data, src_tgt->ltd_idx,
1965 LCK_EX, MDS_INODELOCK_LOOKUP,
1966 MF_MDC_CANCEL_FID3);
1970 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
1971 LCK_EX, MDS_INODELOCK_FULL,
1972 MF_MDC_CANCEL_FID3);
1979 * Cancel all the locks on tgt child (fid4).
1981 if (fid_is_sane(&op_data->op_fid4)) {
1982 struct lmv_tgt_desc *tgt;
1984 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
1985 LCK_EX, MDS_INODELOCK_FULL,
1986 MF_MDC_CANCEL_FID4);
1990 tgt = lmv_find_target(lmv, &op_data->op_fid4);
1992 RETURN(PTR_ERR(tgt));
1994 /* Since the target child might be destroyed, and it might
1995 * become orphan, and we can only check orphan on the local
1996 * MDT right now, so we send rename request to the MDT where
1997 * target child is located. If target child does not exist,
1998 * then it will send the request to the target parent */
1999 target_exp = tgt->ltd_exp;
2002 rc = md_rename(target_exp, op_data, old, oldlen, new, newlen,
2005 if (rc != 0 && rc != -EXDEV)
2008 body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
2012 /* Not cross-ref case, just get out of here. */
2013 if (likely(!(body->mbo_valid & OBD_MD_MDS)))
2016 CDEBUG(D_INODE, "%s: try rename to another MDT for "DFID"\n",
2017 exp->exp_obd->obd_name, PFID(&body->mbo_fid1));
2019 op_data->op_fid4 = body->mbo_fid1;
2020 ptlrpc_req_finished(*request);
2025 static int lmv_setattr(struct obd_export *exp, struct md_op_data *op_data,
2026 void *ea, size_t ealen, struct ptlrpc_request **request)
2028 struct obd_device *obd = exp->exp_obd;
2029 struct lmv_obd *lmv = &obd->u.lmv;
2030 struct lmv_tgt_desc *tgt;
2034 CDEBUG(D_INODE, "SETATTR for "DFID", valid 0x%x\n",
2035 PFID(&op_data->op_fid1), op_data->op_attr.ia_valid);
2037 op_data->op_flags |= MF_MDC_CANCEL_FID1;
2038 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2040 RETURN(PTR_ERR(tgt));
2042 rc = md_setattr(tgt->ltd_exp, op_data, ea, ealen, request);
2047 static int lmv_fsync(struct obd_export *exp, const struct lu_fid *fid,
2048 struct ptlrpc_request **request)
2050 struct obd_device *obd = exp->exp_obd;
2051 struct lmv_obd *lmv = &obd->u.lmv;
2052 struct lmv_tgt_desc *tgt;
2056 tgt = lmv_find_target(lmv, fid);
2058 RETURN(PTR_ERR(tgt));
2060 rc = md_fsync(tgt->ltd_exp, fid, request);
2064 struct stripe_dirent {
2065 struct page *sd_page;
2066 struct lu_dirpage *sd_dp;
2067 struct lu_dirent *sd_ent;
2071 struct lmv_dir_ctxt {
2072 struct lmv_obd *ldc_lmv;
2073 struct md_op_data *ldc_op_data;
2074 struct md_callback *ldc_cb_op;
2077 struct stripe_dirent ldc_stripes[0];
2080 static inline void put_stripe_dirent(struct stripe_dirent *stripe)
2082 if (stripe->sd_page) {
2083 kunmap(stripe->sd_page);
2084 put_page(stripe->sd_page);
2085 stripe->sd_page = NULL;
2089 static inline void put_lmv_dir_ctxt(struct lmv_dir_ctxt *ctxt)
2093 for (i = 0; i < ctxt->ldc_count; i++)
2094 put_stripe_dirent(&ctxt->ldc_stripes[i]);
2097 static struct lu_dirent *stripe_dirent_next(struct lmv_dir_ctxt *ctxt,
2098 struct stripe_dirent *stripe,
2101 struct lu_dirent *ent = stripe->sd_ent;
2102 __u64 hash = ctxt->ldc_hash;
2107 LASSERT(stripe == &ctxt->ldc_stripes[stripe_index]);
2110 ent = lu_dirent_next(ent);
2113 end = le64_to_cpu(stripe->sd_dp->ldp_hash_end);
2115 put_stripe_dirent(stripe);
2117 if (end == MDS_DIR_END_OFF) {
2118 stripe->sd_ent = NULL;
2119 stripe->sd_eof = true;
2122 LASSERT(hash <= end);
2128 struct md_op_data *op_data = ctxt->ldc_op_data;
2129 struct lmv_oinfo *oinfo;
2130 struct lu_fid fid = op_data->op_fid1;
2131 struct inode *inode = op_data->op_data;
2132 struct lmv_tgt_desc *tgt;
2134 LASSERT(!stripe->sd_page);
2136 oinfo = &op_data->op_mea1->lsm_md_oinfo[stripe_index];
2137 tgt = lmv_get_target(ctxt->ldc_lmv, oinfo->lmo_mds, NULL);
2139 GOTO(out, rc = PTR_ERR(tgt));
2141 /* op_data will be shared by each stripe, so we need
2142 * reset these value for each stripe */
2143 op_data->op_fid1 = oinfo->lmo_fid;
2144 op_data->op_fid2 = oinfo->lmo_fid;
2145 op_data->op_data = oinfo->lmo_root;
2147 rc = md_read_page(tgt->ltd_exp, op_data, ctxt->ldc_cb_op, hash,
2150 op_data->op_fid1 = fid;
2151 op_data->op_fid2 = fid;
2152 op_data->op_data = inode;
2157 stripe->sd_dp = page_address(stripe->sd_page);
2158 ent = lu_dirent_start(stripe->sd_dp);
2161 for (; ent; ent = lu_dirent_next(ent)) {
2162 /* Skip dummy entry */
2163 if (le16_to_cpu(ent->lde_namelen) == 0)
2166 /* skip . and .. for other stripes */
2168 (strncmp(ent->lde_name, ".",
2169 le16_to_cpu(ent->lde_namelen)) == 0 ||
2170 strncmp(ent->lde_name, "..",
2171 le16_to_cpu(ent->lde_namelen)) == 0))
2174 if (le64_to_cpu(ent->lde_hash) < hash)
2185 stripe->sd_ent = ent;
2186 /* treat error as eof, so dir can be partially accessed */
2188 put_stripe_dirent(stripe);
2189 stripe->sd_eof = true;
2190 LCONSOLE_WARN("dir "DFID" stripe %d readdir failed: %d, "
2191 "directory is partially accessed!\n",
2192 PFID(&ctxt->ldc_op_data->op_fid1), stripe_index,
2199 * Get dirent with the closest hash for striped directory
2201 * This function will search the dir entry, whose hash value is the
2202 * closest(>=) to hash from all of sub-stripes, and it is only being called
2203 * for striped directory.
2205 * \param[in] ctxt dir read context
2207 * \retval dirent get the entry successfully
2208 * NULL does not get the entry, normally it means
2209 * it reaches the end of the directory, while read
2210 * stripe dirent error is ignored to allow partial
2213 static struct lu_dirent *lmv_dirent_next(struct lmv_dir_ctxt *ctxt)
2215 struct stripe_dirent *stripe;
2216 struct lu_dirent *ent = NULL;
2220 /* TODO: optimize with k-way merge sort */
2221 for (i = 0; i < ctxt->ldc_count; i++) {
2222 stripe = &ctxt->ldc_stripes[i];
2226 if (!stripe->sd_ent) {
2227 /* locate starting entry */
2228 stripe_dirent_next(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_dirent_next(ctxt, stripe, min);
2256 * Build dir entry page for striped directory
2258 * This function gets one entry by @offset from a striped directory. It will
2259 * read entries from all of stripes, and choose one closest to the required
2260 * offset(&offset). A few notes
2261 * 1. skip . and .. for non-zero stripes, because there can only have one .
2262 * and .. in a directory.
2263 * 2. op_data will be shared by all of stripes, instead of allocating new
2264 * one, so need to restore before reusing.
2266 * \param[in] exp obd export refer to LMV
2267 * \param[in] op_data hold those MD parameters of read_entry
2268 * \param[in] cb_op ldlm callback being used in enqueue in mdc_read_entry
2269 * \param[in] offset starting hash offset
2270 * \param[out] ppage the page holding the entry. Note: because the entry
2271 * will be accessed in upper layer, so we need hold the
2272 * page until the usages of entry is finished, see
2273 * ll_dir_entry_next.
2275 * retval =0 if get entry successfully
2276 * <0 cannot get entry
2278 static int lmv_striped_read_page(struct obd_export *exp,
2279 struct md_op_data *op_data,
2280 struct md_callback *cb_op,
2281 __u64 offset, struct page **ppage)
2283 struct page *page = NULL;
2284 struct lu_dirpage *dp;
2286 struct lu_dirent *ent;
2287 struct lu_dirent *last_ent;
2289 struct lmv_dir_ctxt *ctxt;
2290 struct lu_dirent *next = NULL;
2296 /* Allocate a page and read entries from all of stripes and fill
2297 * the page by hash order */
2298 page = alloc_page(GFP_KERNEL);
2302 /* Initialize the entry page */
2304 memset(dp, 0, sizeof(*dp));
2305 dp->ldp_hash_start = cpu_to_le64(offset);
2308 left_bytes = PAGE_SIZE - sizeof(*dp);
2312 /* initalize dir read context */
2313 stripe_count = op_data->op_mea1->lsm_md_stripe_count;
2314 OBD_ALLOC(ctxt, offsetof(typeof(*ctxt), ldc_stripes[stripe_count]));
2316 GOTO(free_page, rc = -ENOMEM);
2317 ctxt->ldc_lmv = &exp->exp_obd->u.lmv;
2318 ctxt->ldc_op_data = op_data;
2319 ctxt->ldc_cb_op = cb_op;
2320 ctxt->ldc_hash = offset;
2321 ctxt->ldc_count = stripe_count;
2324 next = lmv_dirent_next(ctxt);
2326 /* end of directory */
2328 ctxt->ldc_hash = MDS_DIR_END_OFF;
2331 ctxt->ldc_hash = le64_to_cpu(next->lde_hash);
2333 ent_size = le16_to_cpu(next->lde_reclen);
2335 /* the last entry lde_reclen is 0, but it might not be the last
2336 * one of this temporay dir page */
2338 ent_size = lu_dirent_calc_size(
2339 le16_to_cpu(next->lde_namelen),
2340 le32_to_cpu(next->lde_attrs));
2342 if (ent_size > left_bytes)
2345 memcpy(ent, next, ent_size);
2347 /* Replace . with master FID and Replace .. with the parent FID
2348 * of master object */
2349 if (strncmp(ent->lde_name, ".",
2350 le16_to_cpu(ent->lde_namelen)) == 0 &&
2351 le16_to_cpu(ent->lde_namelen) == 1)
2352 fid_cpu_to_le(&ent->lde_fid, &op_data->op_fid1);
2353 else if (strncmp(ent->lde_name, "..",
2354 le16_to_cpu(ent->lde_namelen)) == 0 &&
2355 le16_to_cpu(ent->lde_namelen) == 2)
2356 fid_cpu_to_le(&ent->lde_fid, &op_data->op_fid3);
2358 CDEBUG(D_INODE, "entry %.*s hash %#llx\n",
2359 le16_to_cpu(ent->lde_namelen), ent->lde_name,
2360 le64_to_cpu(ent->lde_hash));
2362 left_bytes -= ent_size;
2363 ent->lde_reclen = cpu_to_le16(ent_size);
2365 ent = (void *)ent + ent_size;
2368 last_ent->lde_reclen = 0;
2371 dp->ldp_flags |= LDF_EMPTY;
2372 else if (ctxt->ldc_hash == le64_to_cpu(last_ent->lde_hash))
2373 dp->ldp_flags |= LDF_COLLIDE;
2374 dp->ldp_flags = cpu_to_le32(dp->ldp_flags);
2375 dp->ldp_hash_end = cpu_to_le64(ctxt->ldc_hash);
2377 put_lmv_dir_ctxt(ctxt);
2378 OBD_FREE(ctxt, offsetof(typeof(*ctxt), ldc_stripes[stripe_count]));
2391 int lmv_read_page(struct obd_export *exp, struct md_op_data *op_data,
2392 struct md_callback *cb_op, __u64 offset,
2393 struct page **ppage)
2395 struct obd_device *obd = exp->exp_obd;
2396 struct lmv_obd *lmv = &obd->u.lmv;
2397 struct lmv_stripe_md *lsm = op_data->op_mea1;
2398 struct lmv_tgt_desc *tgt;
2402 if (unlikely(lsm != NULL)) {
2403 rc = lmv_striped_read_page(exp, op_data, cb_op, offset, ppage);
2407 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2409 RETURN(PTR_ERR(tgt));
2411 rc = md_read_page(tgt->ltd_exp, op_data, cb_op, offset, ppage);
2417 * Unlink a file/directory
2419 * Unlink a file or directory under the parent dir. The unlink request
2420 * usually will be sent to the MDT where the child is located, but if
2421 * the client does not have the child FID then request will be sent to the
2422 * MDT where the parent is located.
2424 * If the parent is a striped directory then it also needs to locate which
2425 * stripe the name of the child is located, and replace the parent FID
2426 * (@op->op_fid1) with the stripe FID. Note: if the stripe is unknown,
2427 * it will walk through all of sub-stripes until the child is being
2430 * \param[in] exp export refer to LMV
2431 * \param[in] op_data different parameters transferred beween client
2432 * MD stacks, name, namelen, FIDs etc.
2433 * op_fid1 is the parent FID, op_fid2 is the child
2435 * \param[out] request point to the request of unlink.
2437 * retval 0 if succeed
2438 * negative errno if failed.
2440 static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data,
2441 struct ptlrpc_request **request)
2443 struct obd_device *obd = exp->exp_obd;
2444 struct lmv_obd *lmv = &obd->u.lmv;
2445 struct lmv_tgt_desc *tgt = NULL;
2446 struct lmv_tgt_desc *parent_tgt = NULL;
2447 struct mdt_body *body;
2449 int stripe_index = 0;
2450 struct lmv_stripe_md *lsm = op_data->op_mea1;
2454 /* For striped dir, we need to locate the parent as well */
2456 struct lmv_tgt_desc *tmp;
2458 LASSERT(op_data->op_name != NULL &&
2459 op_data->op_namelen != 0);
2461 tmp = lmv_locate_target_for_name(lmv, lsm,
2463 op_data->op_namelen,
2467 /* return -EBADFD means unknown hash type, might
2468 * need try all sub-stripe here */
2469 if (IS_ERR(tmp) && PTR_ERR(tmp) != -EBADFD)
2470 RETURN(PTR_ERR(tmp));
2472 /* Note: both migrating dir and unknown hash dir need to
2473 * try all of sub-stripes, so we need start search the
2474 * name from stripe 0, but migrating dir is already handled
2475 * inside lmv_locate_target_for_name(), so we only check
2476 * unknown hash type directory here */
2477 if (!lmv_is_known_hash_type(lsm->lsm_md_hash_type)) {
2478 struct lmv_oinfo *oinfo;
2480 oinfo = &lsm->lsm_md_oinfo[stripe_index];
2482 op_data->op_fid1 = oinfo->lmo_fid;
2483 op_data->op_mds = oinfo->lmo_mds;
2488 /* Send unlink requests to the MDT where the child is located */
2489 if (likely(!fid_is_zero(&op_data->op_fid2)))
2490 tgt = lmv_find_target(lmv, &op_data->op_fid2);
2491 else if (lsm != NULL)
2492 tgt = lmv_get_target(lmv, op_data->op_mds, NULL);
2494 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
2497 RETURN(PTR_ERR(tgt));
2499 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2500 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2501 op_data->op_cap = cfs_curproc_cap_pack();
2504 * If child's fid is given, cancel unused locks for it if it is from
2505 * another export than parent.
2507 * LOOKUP lock for child (fid3) should also be cancelled on parent
2508 * tgt_tgt in mdc_unlink().
2510 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
2513 * Cancel FULL locks on child (fid3).
2515 parent_tgt = lmv_find_target(lmv, &op_data->op_fid1);
2516 if (IS_ERR(parent_tgt))
2517 RETURN(PTR_ERR(parent_tgt));
2519 if (parent_tgt != tgt) {
2520 rc = lmv_early_cancel(exp, parent_tgt, op_data, tgt->ltd_idx,
2521 LCK_EX, MDS_INODELOCK_LOOKUP,
2522 MF_MDC_CANCEL_FID3);
2525 rc = lmv_early_cancel(exp, NULL, op_data, tgt->ltd_idx, LCK_EX,
2526 MDS_INODELOCK_FULL, MF_MDC_CANCEL_FID3);
2530 CDEBUG(D_INODE, "unlink with fid="DFID"/"DFID" -> mds #%u\n",
2531 PFID(&op_data->op_fid1), PFID(&op_data->op_fid2), tgt->ltd_idx);
2533 rc = md_unlink(tgt->ltd_exp, op_data, request);
2534 if (rc != 0 && rc != -EREMOTE && rc != -ENOENT)
2537 /* Try next stripe if it is needed. */
2538 if (rc == -ENOENT && lsm != NULL && lmv_need_try_all_stripes(lsm)) {
2539 struct lmv_oinfo *oinfo;
2542 if (stripe_index >= lsm->lsm_md_stripe_count)
2545 oinfo = &lsm->lsm_md_oinfo[stripe_index];
2547 op_data->op_fid1 = oinfo->lmo_fid;
2548 op_data->op_mds = oinfo->lmo_mds;
2550 ptlrpc_req_finished(*request);
2553 goto try_next_stripe;
2556 body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
2560 /* Not cross-ref case, just get out of here. */
2561 if (likely(!(body->mbo_valid & OBD_MD_MDS)))
2564 CDEBUG(D_INODE, "%s: try unlink to another MDT for "DFID"\n",
2565 exp->exp_obd->obd_name, PFID(&body->mbo_fid1));
2567 /* This is a remote object, try remote MDT, Note: it may
2568 * try more than 1 time here, Considering following case
2569 * /mnt/lustre is root on MDT0, remote1 is on MDT1
2570 * 1. Initially A does not know where remote1 is, it send
2571 * unlink RPC to MDT0, MDT0 return -EREMOTE, it will
2572 * resend unlink RPC to MDT1 (retry 1st time).
2574 * 2. During the unlink RPC in flight,
2575 * client B mv /mnt/lustre/remote1 /mnt/lustre/remote2
2576 * and create new remote1, but on MDT0
2578 * 3. MDT1 get unlink RPC(from A), then do remote lock on
2579 * /mnt/lustre, then lookup get fid of remote1, and find
2580 * it is remote dir again, and replay -EREMOTE again.
2582 * 4. Then A will resend unlink RPC to MDT0. (retry 2nd times).
2584 * In theory, it might try unlimited time here, but it should
2585 * be very rare case. */
2586 op_data->op_fid2 = body->mbo_fid1;
2587 ptlrpc_req_finished(*request);
2593 static int lmv_precleanup(struct obd_device *obd)
2596 fld_client_proc_fini(&obd->u.lmv.lmv_fld);
2597 lprocfs_obd_cleanup(obd);
2598 lprocfs_free_md_stats(obd);
2603 * Get by key a value associated with a LMV device.
2605 * Dispatch request to lower-layer devices as needed.
2607 * \param[in] env execution environment for this thread
2608 * \param[in] exp export for the LMV device
2609 * \param[in] keylen length of key identifier
2610 * \param[in] key identifier of key to get value for
2611 * \param[in] vallen size of \a val
2612 * \param[out] val pointer to storage location for value
2613 * \param[in] lsm optional striping metadata of object
2615 * \retval 0 on success
2616 * \retval negative negated errno on failure
2618 static int lmv_get_info(const struct lu_env *env, struct obd_export *exp,
2619 __u32 keylen, void *key, __u32 *vallen, void *val)
2621 struct obd_device *obd;
2622 struct lmv_obd *lmv;
2626 obd = class_exp2obd(exp);
2628 CDEBUG(D_IOCTL, "Invalid client cookie %#llx\n",
2629 exp->exp_handle.h_cookie);
2634 if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) {
2637 LASSERT(*vallen == sizeof(__u32));
2638 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2639 struct lmv_tgt_desc *tgt = lmv->tgts[i];
2641 * All tgts should be connected when this gets called.
2643 if (tgt == NULL || tgt->ltd_exp == NULL)
2646 if (!obd_get_info(env, tgt->ltd_exp, keylen, key,
2651 } else if (KEY_IS(KEY_MAX_EASIZE) ||
2652 KEY_IS(KEY_DEFAULT_EASIZE) ||
2653 KEY_IS(KEY_CONN_DATA)) {
2655 * Forwarding this request to first MDS, it should know LOV
2658 rc = obd_get_info(env, lmv->tgts[0]->ltd_exp, keylen, key,
2660 if (!rc && KEY_IS(KEY_CONN_DATA))
2661 exp->exp_connect_data = *(struct obd_connect_data *)val;
2663 } else if (KEY_IS(KEY_TGT_COUNT)) {
2664 *((int *)val) = lmv->desc.ld_tgt_count;
2668 CDEBUG(D_IOCTL, "Invalid key\n");
2673 * Asynchronously set by key a value associated with a LMV device.
2675 * Dispatch request to lower-layer devices as needed.
2677 * \param[in] env execution environment for this thread
2678 * \param[in] exp export for the LMV device
2679 * \param[in] keylen length of key identifier
2680 * \param[in] key identifier of key to store value for
2681 * \param[in] vallen size of value to store
2682 * \param[in] val pointer to data to be stored
2683 * \param[in] set optional list of related ptlrpc requests
2685 * \retval 0 on success
2686 * \retval negative negated errno on failure
2688 int lmv_set_info_async(const struct lu_env *env, struct obd_export *exp,
2689 __u32 keylen, void *key, __u32 vallen, void *val,
2690 struct ptlrpc_request_set *set)
2692 struct lmv_tgt_desc *tgt = NULL;
2693 struct obd_device *obd;
2694 struct lmv_obd *lmv;
2698 obd = class_exp2obd(exp);
2700 CDEBUG(D_IOCTL, "Invalid client cookie %#llx\n",
2701 exp->exp_handle.h_cookie);
2706 if (KEY_IS(KEY_READ_ONLY) || KEY_IS(KEY_FLUSH_CTX) ||
2707 KEY_IS(KEY_DEFAULT_EASIZE)) {
2710 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2713 if (tgt == NULL || tgt->ltd_exp == NULL)
2716 err = obd_set_info_async(env, tgt->ltd_exp,
2717 keylen, key, vallen, val, set);
2728 static int lmv_unpack_md_v1(struct obd_export *exp, struct lmv_stripe_md *lsm,
2729 const struct lmv_mds_md_v1 *lmm1)
2731 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2738 lsm->lsm_md_magic = le32_to_cpu(lmm1->lmv_magic);
2739 lsm->lsm_md_stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
2740 lsm->lsm_md_master_mdt_index = le32_to_cpu(lmm1->lmv_master_mdt_index);
2741 if (OBD_FAIL_CHECK(OBD_FAIL_UNKNOWN_LMV_STRIPE))
2742 lsm->lsm_md_hash_type = LMV_HASH_TYPE_UNKNOWN;
2744 lsm->lsm_md_hash_type = le32_to_cpu(lmm1->lmv_hash_type);
2745 lsm->lsm_md_layout_version = le32_to_cpu(lmm1->lmv_layout_version);
2746 cplen = strlcpy(lsm->lsm_md_pool_name, lmm1->lmv_pool_name,
2747 sizeof(lsm->lsm_md_pool_name));
2749 if (cplen >= sizeof(lsm->lsm_md_pool_name))
2752 CDEBUG(D_INFO, "unpack lsm count %d, master %d hash_type %d"
2753 "layout_version %d\n", lsm->lsm_md_stripe_count,
2754 lsm->lsm_md_master_mdt_index, lsm->lsm_md_hash_type,
2755 lsm->lsm_md_layout_version);
2757 stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
2758 for (i = 0; i < stripe_count; i++) {
2759 fid_le_to_cpu(&lsm->lsm_md_oinfo[i].lmo_fid,
2760 &lmm1->lmv_stripe_fids[i]);
2761 rc = lmv_fld_lookup(lmv, &lsm->lsm_md_oinfo[i].lmo_fid,
2762 &lsm->lsm_md_oinfo[i].lmo_mds);
2765 CDEBUG(D_INFO, "unpack fid #%d "DFID"\n", i,
2766 PFID(&lsm->lsm_md_oinfo[i].lmo_fid));
2772 static int lmv_unpackmd(struct obd_export *exp, struct lmv_stripe_md **lsmp,
2773 const union lmv_mds_md *lmm, size_t lmm_size)
2775 struct lmv_stripe_md *lsm;
2778 bool allocated = false;
2781 LASSERT(lsmp != NULL);
2785 if (lsm != NULL && lmm == NULL) {
2787 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
2788 /* For migrating inode, the master stripe and master
2789 * object will be the same, so do not need iput, see
2790 * ll_update_lsm_md */
2791 if (!(lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION &&
2792 i == 0) && lsm->lsm_md_oinfo[i].lmo_root != NULL)
2793 iput(lsm->lsm_md_oinfo[i].lmo_root);
2795 lsm_size = lmv_stripe_md_size(lsm->lsm_md_stripe_count);
2796 OBD_FREE(lsm, lsm_size);
2801 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE)
2805 if (le32_to_cpu(lmm->lmv_magic) != LMV_MAGIC_V1 &&
2806 le32_to_cpu(lmm->lmv_magic) != LMV_USER_MAGIC) {
2807 CERROR("%s: invalid lmv magic %x: rc = %d\n",
2808 exp->exp_obd->obd_name, le32_to_cpu(lmm->lmv_magic),
2813 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_V1)
2814 lsm_size = lmv_stripe_md_size(lmv_mds_md_stripe_count_get(lmm));
2817 * Unpack default dirstripe(lmv_user_md) to lmv_stripe_md,
2818 * stripecount should be 0 then.
2820 lsm_size = lmv_stripe_md_size(0);
2822 lsm_size = lmv_stripe_md_size(lmv_mds_md_stripe_count_get(lmm));
2824 OBD_ALLOC(lsm, lsm_size);
2831 switch (le32_to_cpu(lmm->lmv_magic)) {
2833 rc = lmv_unpack_md_v1(exp, lsm, &lmm->lmv_md_v1);
2836 CERROR("%s: unrecognized magic %x\n", exp->exp_obd->obd_name,
2837 le32_to_cpu(lmm->lmv_magic));
2842 if (rc != 0 && allocated) {
2843 OBD_FREE(lsm, lsm_size);
2850 void lmv_free_memmd(struct lmv_stripe_md *lsm)
2852 lmv_unpackmd(NULL, &lsm, NULL, 0);
2854 EXPORT_SYMBOL(lmv_free_memmd);
2856 static int lmv_cancel_unused(struct obd_export *exp, const struct lu_fid *fid,
2857 union ldlm_policy_data *policy,
2858 enum ldlm_mode mode, enum ldlm_cancel_flags flags,
2861 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2866 LASSERT(fid != NULL);
2868 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2869 struct lmv_tgt_desc *tgt = lmv->tgts[i];
2872 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
2875 err = md_cancel_unused(tgt->ltd_exp, fid, policy, mode, flags,
2883 static int lmv_set_lock_data(struct obd_export *exp,
2884 const struct lustre_handle *lockh,
2885 void *data, __u64 *bits)
2887 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2888 struct lmv_tgt_desc *tgt = lmv->tgts[0];
2892 if (tgt == NULL || tgt->ltd_exp == NULL)
2894 rc = md_set_lock_data(tgt->ltd_exp, lockh, data, bits);
2898 enum ldlm_mode lmv_lock_match(struct obd_export *exp, __u64 flags,
2899 const struct lu_fid *fid, enum ldlm_type type,
2900 union ldlm_policy_data *policy,
2901 enum ldlm_mode mode, struct lustre_handle *lockh)
2903 struct obd_device *obd = exp->exp_obd;
2904 struct lmv_obd *lmv = &obd->u.lmv;
2910 CDEBUG(D_INODE, "Lock match for "DFID"\n", PFID(fid));
2913 * With DNE every object can have two locks in different namespaces:
2914 * lookup lock in space of MDT storing direntry and update/open lock in
2915 * space of MDT storing inode. Try the MDT that the FID maps to first,
2916 * since this can be easily found, and only try others if that fails.
2918 for (i = 0, tgt = lmv_find_target_index(lmv, fid);
2919 i < lmv->desc.ld_tgt_count;
2920 i++, tgt = (tgt + 1) % lmv->desc.ld_tgt_count) {
2922 CDEBUG(D_HA, "%s: "DFID" is inaccessible: rc = %d\n",
2923 obd->obd_name, PFID(fid), tgt);
2927 if (lmv->tgts[tgt] == NULL ||
2928 lmv->tgts[tgt]->ltd_exp == NULL ||
2929 lmv->tgts[tgt]->ltd_active == 0)
2932 rc = md_lock_match(lmv->tgts[tgt]->ltd_exp, flags, fid,
2933 type, policy, mode, lockh);
2941 int lmv_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
2942 struct obd_export *dt_exp, struct obd_export *md_exp,
2943 struct lustre_md *md)
2945 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2946 struct lmv_tgt_desc *tgt = lmv->tgts[0];
2948 if (tgt == NULL || tgt->ltd_exp == NULL)
2951 return md_get_lustre_md(lmv->tgts[0]->ltd_exp, req, dt_exp, md_exp, md);
2954 int lmv_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
2956 struct obd_device *obd = exp->exp_obd;
2957 struct lmv_obd *lmv = &obd->u.lmv;
2958 struct lmv_tgt_desc *tgt = lmv->tgts[0];
2961 if (md->lmv != NULL) {
2962 lmv_free_memmd(md->lmv);
2965 if (tgt == NULL || tgt->ltd_exp == NULL)
2967 RETURN(md_free_lustre_md(lmv->tgts[0]->ltd_exp, md));
2970 int lmv_set_open_replay_data(struct obd_export *exp,
2971 struct obd_client_handle *och,
2972 struct lookup_intent *it)
2974 struct obd_device *obd = exp->exp_obd;
2975 struct lmv_obd *lmv = &obd->u.lmv;
2976 struct lmv_tgt_desc *tgt;
2979 tgt = lmv_find_target(lmv, &och->och_fid);
2981 RETURN(PTR_ERR(tgt));
2983 RETURN(md_set_open_replay_data(tgt->ltd_exp, och, it));
2986 int lmv_clear_open_replay_data(struct obd_export *exp,
2987 struct obd_client_handle *och)
2989 struct obd_device *obd = exp->exp_obd;
2990 struct lmv_obd *lmv = &obd->u.lmv;
2991 struct lmv_tgt_desc *tgt;
2994 tgt = lmv_find_target(lmv, &och->och_fid);
2996 RETURN(PTR_ERR(tgt));
2998 RETURN(md_clear_open_replay_data(tgt->ltd_exp, och));
3001 int lmv_intent_getattr_async(struct obd_export *exp,
3002 struct md_enqueue_info *minfo)
3004 struct md_op_data *op_data = &minfo->mi_data;
3005 struct obd_device *obd = exp->exp_obd;
3006 struct lmv_obd *lmv = &obd->u.lmv;
3007 struct lmv_tgt_desc *tgt = NULL;
3011 if (!fid_is_sane(&op_data->op_fid2))
3014 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
3016 RETURN(PTR_ERR(tgt));
3019 * no special handle for remote dir, which needs to fetch both LOOKUP
3020 * lock on parent, and then UPDATE lock on child MDT, which makes all
3021 * complicated because this is done async. So only LOOKUP lock is
3022 * fetched for remote dir, but considering remote dir is rare case,
3023 * and not supporting it in statahead won't cause any issue, just leave
3027 rc = md_intent_getattr_async(tgt->ltd_exp, minfo);
3031 int lmv_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
3032 struct lu_fid *fid, __u64 *bits)
3034 struct obd_device *obd = exp->exp_obd;
3035 struct lmv_obd *lmv = &obd->u.lmv;
3036 struct lmv_tgt_desc *tgt;
3040 tgt = lmv_find_target(lmv, fid);
3042 RETURN(PTR_ERR(tgt));
3044 rc = md_revalidate_lock(tgt->ltd_exp, it, fid, bits);
3048 int lmv_get_fid_from_lsm(struct obd_export *exp,
3049 const struct lmv_stripe_md *lsm,
3050 const char *name, int namelen, struct lu_fid *fid)
3052 const struct lmv_oinfo *oinfo;
3054 LASSERT(lsm != NULL);
3055 oinfo = lsm_name_to_stripe_info(lsm, name, namelen);
3057 return PTR_ERR(oinfo);
3059 *fid = oinfo->lmo_fid;
3065 * For lmv, only need to send request to master MDT, and the master MDT will
3066 * process with other slave MDTs. The only exception is Q_GETOQUOTA for which
3067 * we directly fetch data from the slave MDTs.
3069 int lmv_quotactl(struct obd_device *unused, struct obd_export *exp,
3070 struct obd_quotactl *oqctl)
3072 struct obd_device *obd = class_exp2obd(exp);
3073 struct lmv_obd *lmv = &obd->u.lmv;
3074 struct lmv_tgt_desc *tgt = lmv->tgts[0];
3077 __u64 curspace, curinodes;
3081 tgt->ltd_exp == NULL ||
3083 lmv->desc.ld_tgt_count == 0) {
3084 CERROR("master lmv inactive\n");
3088 if (oqctl->qc_cmd != Q_GETOQUOTA) {
3089 rc = obd_quotactl(tgt->ltd_exp, oqctl);
3093 curspace = curinodes = 0;
3094 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
3098 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
3101 err = obd_quotactl(tgt->ltd_exp, oqctl);
3103 CERROR("getquota on mdt %d failed. %d\n", i, err);
3107 curspace += oqctl->qc_dqblk.dqb_curspace;
3108 curinodes += oqctl->qc_dqblk.dqb_curinodes;
3111 oqctl->qc_dqblk.dqb_curspace = curspace;
3112 oqctl->qc_dqblk.dqb_curinodes = curinodes;
3117 static int lmv_merge_attr(struct obd_export *exp,
3118 const struct lmv_stripe_md *lsm,
3119 struct cl_attr *attr,
3120 ldlm_blocking_callback cb_blocking)
3125 rc = lmv_revalidate_slaves(exp, lsm, cb_blocking, 0);
3129 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
3130 struct inode *inode = lsm->lsm_md_oinfo[i].lmo_root;
3132 CDEBUG(D_INFO, ""DFID" size %llu, blocks %llu nlink %u,"
3133 " atime %lu ctime %lu, mtime %lu.\n",
3134 PFID(&lsm->lsm_md_oinfo[i].lmo_fid),
3135 i_size_read(inode), (unsigned long long)inode->i_blocks,
3136 inode->i_nlink, LTIME_S(inode->i_atime),
3137 LTIME_S(inode->i_ctime), LTIME_S(inode->i_mtime));
3139 /* for slave stripe, it needs to subtract nlink for . and .. */
3141 attr->cat_nlink += inode->i_nlink - 2;
3143 attr->cat_nlink = inode->i_nlink;
3145 attr->cat_size += i_size_read(inode);
3146 attr->cat_blocks += inode->i_blocks;
3148 if (attr->cat_atime < LTIME_S(inode->i_atime))
3149 attr->cat_atime = LTIME_S(inode->i_atime);
3151 if (attr->cat_ctime < LTIME_S(inode->i_ctime))
3152 attr->cat_ctime = LTIME_S(inode->i_ctime);
3154 if (attr->cat_mtime < LTIME_S(inode->i_mtime))
3155 attr->cat_mtime = LTIME_S(inode->i_mtime);
3160 struct obd_ops lmv_obd_ops = {
3161 .o_owner = THIS_MODULE,
3162 .o_setup = lmv_setup,
3163 .o_cleanup = lmv_cleanup,
3164 .o_precleanup = lmv_precleanup,
3165 .o_process_config = lmv_process_config,
3166 .o_connect = lmv_connect,
3167 .o_disconnect = lmv_disconnect,
3168 .o_statfs = lmv_statfs,
3169 .o_get_info = lmv_get_info,
3170 .o_set_info_async = lmv_set_info_async,
3171 .o_notify = lmv_notify,
3172 .o_get_uuid = lmv_get_uuid,
3173 .o_iocontrol = lmv_iocontrol,
3174 .o_quotactl = lmv_quotactl
3177 struct md_ops lmv_md_ops = {
3178 .m_get_root = lmv_get_root,
3179 .m_null_inode = lmv_null_inode,
3180 .m_close = lmv_close,
3181 .m_create = lmv_create,
3182 .m_enqueue = lmv_enqueue,
3183 .m_getattr = lmv_getattr,
3184 .m_getxattr = lmv_getxattr,
3185 .m_getattr_name = lmv_getattr_name,
3186 .m_intent_lock = lmv_intent_lock,
3188 .m_rename = lmv_rename,
3189 .m_setattr = lmv_setattr,
3190 .m_setxattr = lmv_setxattr,
3191 .m_fsync = lmv_fsync,
3192 .m_read_page = lmv_read_page,
3193 .m_unlink = lmv_unlink,
3194 .m_init_ea_size = lmv_init_ea_size,
3195 .m_cancel_unused = lmv_cancel_unused,
3196 .m_set_lock_data = lmv_set_lock_data,
3197 .m_lock_match = lmv_lock_match,
3198 .m_get_lustre_md = lmv_get_lustre_md,
3199 .m_free_lustre_md = lmv_free_lustre_md,
3200 .m_merge_attr = lmv_merge_attr,
3201 .m_set_open_replay_data = lmv_set_open_replay_data,
3202 .m_clear_open_replay_data = lmv_clear_open_replay_data,
3203 .m_intent_getattr_async = lmv_intent_getattr_async,
3204 .m_revalidate_lock = lmv_revalidate_lock,
3205 .m_get_fid_from_lsm = lmv_get_fid_from_lsm,
3206 .m_unpackmd = lmv_unpackmd,
3209 static int __init lmv_init(void)
3211 return class_register_type(&lmv_obd_ops, &lmv_md_ops, true, NULL,
3212 LUSTRE_LMV_NAME, NULL);
3215 static void __exit lmv_exit(void)
3217 class_unregister_type(LUSTRE_LMV_NAME);
3220 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
3221 MODULE_DESCRIPTION("Lustre Logical Metadata Volume");
3222 MODULE_VERSION(LUSTRE_VERSION_STRING);
3223 MODULE_LICENSE("GPL");
3225 module_init(lmv_init);
3226 module_exit(lmv_exit);