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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2015, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_LMV
38 #include <linux/slab.h>
39 #include <linux/module.h>
40 #include <linux/init.h>
41 #include <linux/user_namespace.h>
42 #ifdef HAVE_UIDGID_HEADER
43 # include <linux/uidgid.h>
45 #include <linux/slab.h>
46 #include <linux/pagemap.h>
48 #include <linux/math64.h>
49 #include <linux/seq_file.h>
50 #include <linux/namei.h>
52 #include <lustre/lustre_idl.h>
53 #include <obd_support.h>
54 #include <lustre_lib.h>
55 #include <lustre_net.h>
56 #include <obd_class.h>
57 #include <lustre_lmv.h>
58 #include <lprocfs_status.h>
59 #include <cl_object.h>
60 #include <lustre_fid.h>
61 #include <lustre_ioctl.h>
62 #include <lustre_kernelcomm.h>
63 #include "lmv_internal.h"
65 static void lmv_activate_target(struct lmv_obd *lmv,
66 struct lmv_tgt_desc *tgt,
69 if (tgt->ltd_active == activate)
72 tgt->ltd_active = activate;
73 lmv->desc.ld_active_tgt_count += (activate ? 1 : -1);
75 tgt->ltd_exp->exp_obd->obd_inactive = !activate;
81 * -EINVAL : UUID can't be found in the LMV's target list
82 * -ENOTCONN: The UUID is found, but the target connection is bad (!)
83 * -EBADF : The UUID is found, but the OBD of the wrong type (!)
85 static int lmv_set_mdc_active(struct lmv_obd *lmv,
86 const struct obd_uuid *uuid,
89 struct lmv_tgt_desc *tgt = NULL;
90 struct obd_device *obd;
95 CDEBUG(D_INFO, "Searching in lmv %p for uuid %s (activate=%d)\n",
96 lmv, uuid->uuid, activate);
98 spin_lock(&lmv->lmv_lock);
99 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
101 if (tgt == NULL || tgt->ltd_exp == NULL)
104 CDEBUG(D_INFO, "Target idx %d is %s conn "LPX64"\n", i,
105 tgt->ltd_uuid.uuid, tgt->ltd_exp->exp_handle.h_cookie);
107 if (obd_uuid_equals(uuid, &tgt->ltd_uuid))
111 if (i == lmv->desc.ld_tgt_count)
112 GOTO(out_lmv_lock, rc = -EINVAL);
114 obd = class_exp2obd(tgt->ltd_exp);
116 GOTO(out_lmv_lock, rc = -ENOTCONN);
118 CDEBUG(D_INFO, "Found OBD %s=%s device %d (%p) type %s at LMV idx %d\n",
119 obd->obd_name, obd->obd_uuid.uuid, obd->obd_minor, obd,
120 obd->obd_type->typ_name, i);
121 LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) == 0);
123 if (tgt->ltd_active == activate) {
124 CDEBUG(D_INFO, "OBD %p already %sactive!\n", obd,
125 activate ? "" : "in");
126 GOTO(out_lmv_lock, rc);
129 CDEBUG(D_INFO, "Marking OBD %p %sactive\n", obd,
130 activate ? "" : "in");
131 lmv_activate_target(lmv, tgt, activate);
135 spin_unlock(&lmv->lmv_lock);
139 struct obd_uuid *lmv_get_uuid(struct obd_export *exp)
141 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
142 struct lmv_tgt_desc *tgt = lmv->tgts[0];
144 return (tgt == NULL) ? NULL : obd_get_uuid(tgt->ltd_exp);
147 static int lmv_notify(struct obd_device *obd, struct obd_device *watched,
148 enum obd_notify_event ev, void *data)
150 struct obd_connect_data *conn_data;
151 struct lmv_obd *lmv = &obd->u.lmv;
152 struct obd_uuid *uuid;
156 if (strcmp(watched->obd_type->typ_name, LUSTRE_MDC_NAME)) {
157 CERROR("unexpected notification of %s %s!\n",
158 watched->obd_type->typ_name,
163 uuid = &watched->u.cli.cl_target_uuid;
164 if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE) {
166 * Set MDC as active before notifying the observer, so the
167 * observer can use the MDC normally.
169 rc = lmv_set_mdc_active(lmv, uuid,
170 ev == OBD_NOTIFY_ACTIVE);
172 CERROR("%sactivation of %s failed: %d\n",
173 ev == OBD_NOTIFY_ACTIVE ? "" : "de",
177 } else if (ev == OBD_NOTIFY_OCD) {
178 conn_data = &watched->u.cli.cl_import->imp_connect_data;
180 * XXX: Make sure that ocd_connect_flags from all targets are
181 * the same. Otherwise one of MDTs runs wrong version or
182 * something like this. --umka
184 obd->obd_self_export->exp_connect_data = *conn_data;
187 else if (ev == OBD_NOTIFY_DISCON) {
189 * For disconnect event, flush fld cache for failout MDS case.
191 fld_client_flush(&lmv->lmv_fld);
195 * Pass the notification up the chain.
197 if (obd->obd_observer)
198 rc = obd_notify(obd->obd_observer, watched, ev, data);
204 * This is fake connect function. Its purpose is to initialize lmv and say
205 * caller that everything is okay. Real connection will be performed later.
207 static int lmv_connect(const struct lu_env *env,
208 struct obd_export **exp, struct obd_device *obd,
209 struct obd_uuid *cluuid, struct obd_connect_data *data,
212 struct lmv_obd *lmv = &obd->u.lmv;
213 struct lustre_handle conn = { 0 };
218 * We don't want to actually do the underlying connections more than
219 * once, so keep track.
222 if (lmv->refcount > 1) {
227 rc = class_connect(&conn, obd, cluuid);
229 CERROR("class_connection() returned %d\n", rc);
233 *exp = class_conn2export(&conn);
234 class_export_get(*exp);
238 lmv->cluuid = *cluuid;
241 lmv->conn_data = *data;
243 if (lmv->targets_proc_entry == NULL) {
244 lmv->targets_proc_entry = lprocfs_register("target_obds",
247 if (IS_ERR(lmv->targets_proc_entry)) {
248 CERROR("%s: cannot register "
249 "/proc/fs/lustre/%s/%s/target_obds\n",
250 obd->obd_name, obd->obd_type->typ_name,
252 lmv->targets_proc_entry = NULL;
257 * All real clients should perform actual connection right away, because
258 * it is possible, that LMV will not have opportunity to connect targets
259 * and MDC stuff will be called directly, for instance while reading
260 * ../mdc/../kbytesfree procfs file, etc.
262 if (data != NULL && (data->ocd_connect_flags & OBD_CONNECT_REAL))
263 rc = lmv_check_connect(obd);
265 if (rc && lmv->targets_proc_entry != NULL)
266 lprocfs_remove(&lmv->targets_proc_entry);
270 static int lmv_init_ea_size(struct obd_export *exp, __u32 easize,
273 struct obd_device *obd = exp->exp_obd;
274 struct lmv_obd *lmv = &obd->u.lmv;
280 if (lmv->max_easize < easize) {
281 lmv->max_easize = easize;
284 if (lmv->max_def_easize < def_easize) {
285 lmv->max_def_easize = def_easize;
292 if (lmv->connected == 0)
295 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
296 struct lmv_tgt_desc *tgt = lmv->tgts[i];
298 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active) {
299 CWARN("%s: NULL export for %d\n", obd->obd_name, i);
303 rc = md_init_ea_size(tgt->ltd_exp, easize, def_easize);
305 CERROR("%s: obd_init_ea_size() failed on MDT target %d:"
306 " rc = %d\n", obd->obd_name, i, rc);
313 #define MAX_STRING_SIZE 128
315 int lmv_connect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
317 struct lmv_obd *lmv = &obd->u.lmv;
318 struct obd_uuid *cluuid = &lmv->cluuid;
319 struct obd_uuid lmv_mdc_uuid = { "LMV_MDC_UUID" };
320 struct obd_device *mdc_obd;
321 struct obd_export *mdc_exp;
322 struct lu_fld_target target;
326 mdc_obd = class_find_client_obd(&tgt->ltd_uuid, LUSTRE_MDC_NAME,
329 CERROR("target %s not attached\n", tgt->ltd_uuid.uuid);
333 CDEBUG(D_CONFIG, "connect to %s(%s) - %s, %s FOR %s\n",
334 mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
335 tgt->ltd_uuid.uuid, obd->obd_uuid.uuid,
338 if (!mdc_obd->obd_set_up) {
339 CERROR("target %s is not set up\n", tgt->ltd_uuid.uuid);
343 rc = obd_connect(NULL, &mdc_exp, mdc_obd, &lmv_mdc_uuid,
344 &lmv->conn_data, NULL);
346 CERROR("target %s connect error %d\n", tgt->ltd_uuid.uuid, rc);
351 * Init fid sequence client for this mdc and add new fld target.
353 rc = obd_fid_init(mdc_obd, mdc_exp, LUSTRE_SEQ_METADATA);
357 target.ft_srv = NULL;
358 target.ft_exp = mdc_exp;
359 target.ft_idx = tgt->ltd_idx;
361 fld_client_add_target(&lmv->lmv_fld, &target);
363 rc = obd_register_observer(mdc_obd, obd);
365 obd_disconnect(mdc_exp);
366 CERROR("target %s register_observer error %d\n",
367 tgt->ltd_uuid.uuid, rc);
371 if (obd->obd_observer) {
373 * Tell the observer about the new target.
375 rc = obd_notify(obd->obd_observer, mdc_exp->exp_obd,
377 (void *)(tgt - lmv->tgts[0]));
379 obd_disconnect(mdc_exp);
385 tgt->ltd_exp = mdc_exp;
386 lmv->desc.ld_active_tgt_count++;
388 md_init_ea_size(tgt->ltd_exp, lmv->max_easize, lmv->max_def_easize);
390 CDEBUG(D_CONFIG, "Connected to %s(%s) successfully (%d)\n",
391 mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
392 atomic_read(&obd->obd_refcount));
394 if (lmv->targets_proc_entry != NULL) {
395 struct proc_dir_entry *mdc_symlink;
397 LASSERT(mdc_obd->obd_type != NULL);
398 LASSERT(mdc_obd->obd_type->typ_name != NULL);
399 mdc_symlink = lprocfs_add_symlink(mdc_obd->obd_name,
400 lmv->targets_proc_entry,
402 mdc_obd->obd_type->typ_name,
404 if (mdc_symlink == NULL) {
405 CERROR("cannot register LMV target "
406 "/proc/fs/lustre/%s/%s/target_obds/%s\n",
407 obd->obd_type->typ_name, obd->obd_name,
414 static void lmv_del_target(struct lmv_obd *lmv, int index)
416 if (lmv->tgts[index] == NULL)
419 OBD_FREE_PTR(lmv->tgts[index]);
420 lmv->tgts[index] = NULL;
424 static int lmv_add_target(struct obd_device *obd, struct obd_uuid *uuidp,
425 __u32 index, int gen)
427 struct obd_device *mdc_obd;
428 struct lmv_obd *lmv = &obd->u.lmv;
429 struct lmv_tgt_desc *tgt;
430 int orig_tgt_count = 0;
434 CDEBUG(D_CONFIG, "Target uuid: %s. index %d\n", uuidp->uuid, index);
435 mdc_obd = class_find_client_obd(uuidp, LUSTRE_MDC_NAME,
438 CERROR("%s: Target %s not attached: rc = %d\n",
439 obd->obd_name, uuidp->uuid, -EINVAL);
443 mutex_lock(&lmv->lmv_init_mutex);
444 if ((index < lmv->tgts_size) && (lmv->tgts[index] != NULL)) {
445 tgt = lmv->tgts[index];
446 CERROR("%s: UUID %s already assigned at LOV target index %d:"
447 " rc = %d\n", obd->obd_name,
448 obd_uuid2str(&tgt->ltd_uuid), index, -EEXIST);
449 mutex_unlock(&lmv->lmv_init_mutex);
453 if (index >= lmv->tgts_size) {
454 /* We need to reallocate the lmv target array. */
455 struct lmv_tgt_desc **newtgts, **old = NULL;
459 while (newsize < index + 1)
460 newsize = newsize << 1;
461 OBD_ALLOC(newtgts, sizeof(*newtgts) * newsize);
462 if (newtgts == NULL) {
463 mutex_unlock(&lmv->lmv_init_mutex);
467 if (lmv->tgts_size) {
468 memcpy(newtgts, lmv->tgts,
469 sizeof(*newtgts) * lmv->tgts_size);
471 oldsize = lmv->tgts_size;
475 lmv->tgts_size = newsize;
478 OBD_FREE(old, sizeof(*old) * oldsize);
480 CDEBUG(D_CONFIG, "tgts: %p size: %d\n", lmv->tgts,
486 mutex_unlock(&lmv->lmv_init_mutex);
490 mutex_init(&tgt->ltd_fid_mutex);
491 tgt->ltd_idx = index;
492 tgt->ltd_uuid = *uuidp;
494 lmv->tgts[index] = tgt;
495 if (index >= lmv->desc.ld_tgt_count) {
496 orig_tgt_count = lmv->desc.ld_tgt_count;
497 lmv->desc.ld_tgt_count = index + 1;
500 if (lmv->connected == 0) {
501 /* lmv_check_connect() will connect this target. */
502 mutex_unlock(&lmv->lmv_init_mutex);
506 /* Otherwise let's connect it ourselves */
507 mutex_unlock(&lmv->lmv_init_mutex);
508 rc = lmv_connect_mdc(obd, tgt);
510 spin_lock(&lmv->lmv_lock);
511 if (lmv->desc.ld_tgt_count == index + 1)
512 lmv->desc.ld_tgt_count = orig_tgt_count;
513 memset(tgt, 0, sizeof(*tgt));
514 spin_unlock(&lmv->lmv_lock);
516 int easize = sizeof(struct lmv_stripe_md) +
517 lmv->desc.ld_tgt_count * sizeof(struct lu_fid);
518 lmv_init_ea_size(obd->obd_self_export, easize, 0);
524 int lmv_check_connect(struct obd_device *obd)
526 struct lmv_obd *lmv = &obd->u.lmv;
527 struct lmv_tgt_desc *tgt;
536 mutex_lock(&lmv->lmv_init_mutex);
537 if (lmv->connected) {
538 mutex_unlock(&lmv->lmv_init_mutex);
542 if (lmv->desc.ld_tgt_count == 0) {
543 mutex_unlock(&lmv->lmv_init_mutex);
544 CERROR("%s: no targets configured.\n", obd->obd_name);
548 LASSERT(lmv->tgts != NULL);
550 if (lmv->tgts[0] == NULL) {
551 mutex_unlock(&lmv->lmv_init_mutex);
552 CERROR("%s: no target configured for index 0.\n",
557 CDEBUG(D_CONFIG, "Time to connect %s to %s\n",
558 lmv->cluuid.uuid, obd->obd_name);
560 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
564 rc = lmv_connect_mdc(obd, tgt);
569 class_export_put(lmv->exp);
571 easize = lmv_mds_md_size(lmv->desc.ld_tgt_count, LMV_MAGIC);
572 lmv_init_ea_size(obd->obd_self_export, easize, 0);
573 mutex_unlock(&lmv->lmv_init_mutex);
584 --lmv->desc.ld_active_tgt_count;
585 rc2 = obd_disconnect(tgt->ltd_exp);
587 CERROR("LMV target %s disconnect on "
588 "MDC idx %d: error %d\n",
589 tgt->ltd_uuid.uuid, i, rc2);
593 class_disconnect(lmv->exp);
594 mutex_unlock(&lmv->lmv_init_mutex);
598 static int lmv_disconnect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
600 struct lmv_obd *lmv = &obd->u.lmv;
601 struct obd_device *mdc_obd;
605 LASSERT(tgt != NULL);
606 LASSERT(obd != NULL);
608 mdc_obd = class_exp2obd(tgt->ltd_exp);
611 mdc_obd->obd_force = obd->obd_force;
612 mdc_obd->obd_fail = obd->obd_fail;
613 mdc_obd->obd_no_recov = obd->obd_no_recov;
615 if (lmv->targets_proc_entry != NULL)
616 lprocfs_remove_proc_entry(mdc_obd->obd_name,
617 lmv->targets_proc_entry);
620 rc = obd_fid_fini(tgt->ltd_exp->exp_obd);
622 CERROR("Can't finanize fids factory\n");
624 CDEBUG(D_INFO, "Disconnected from %s(%s) successfully\n",
625 tgt->ltd_exp->exp_obd->obd_name,
626 tgt->ltd_exp->exp_obd->obd_uuid.uuid);
628 obd_register_observer(tgt->ltd_exp->exp_obd, NULL);
629 rc = obd_disconnect(tgt->ltd_exp);
631 if (tgt->ltd_active) {
632 CERROR("Target %s disconnect error %d\n",
633 tgt->ltd_uuid.uuid, rc);
637 lmv_activate_target(lmv, tgt, 0);
642 static int lmv_disconnect(struct obd_export *exp)
644 struct obd_device *obd = class_exp2obd(exp);
645 struct lmv_obd *lmv = &obd->u.lmv;
654 * Only disconnect the underlying layers on the final disconnect.
657 if (lmv->refcount != 0)
660 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
661 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
664 lmv_disconnect_mdc(obd, lmv->tgts[i]);
667 if (lmv->targets_proc_entry != NULL)
668 lprocfs_remove(&lmv->targets_proc_entry);
670 CERROR("/proc/fs/lustre/%s/%s/target_obds missing\n",
671 obd->obd_type->typ_name, obd->obd_name);
675 * This is the case when no real connection is established by
676 * lmv_check_connect().
679 class_export_put(exp);
680 rc = class_disconnect(exp);
681 if (lmv->refcount == 0)
686 static int lmv_fid2path(struct obd_export *exp, int len, void *karg,
689 struct obd_device *obddev = class_exp2obd(exp);
690 struct lmv_obd *lmv = &obddev->u.lmv;
691 struct getinfo_fid2path *gf;
692 struct lmv_tgt_desc *tgt;
693 struct getinfo_fid2path *remote_gf = NULL;
694 struct lu_fid root_fid;
695 int remote_gf_size = 0;
699 tgt = lmv_find_target(lmv, &gf->gf_fid);
701 RETURN(PTR_ERR(tgt));
703 root_fid = *gf->gf_u.gf_root_fid;
704 LASSERT(fid_is_sane(&root_fid));
707 rc = obd_iocontrol(OBD_IOC_FID2PATH, tgt->ltd_exp, len, gf, uarg);
708 if (rc != 0 && rc != -EREMOTE)
709 GOTO(out_fid2path, rc);
711 /* If remote_gf != NULL, it means just building the
712 * path on the remote MDT, copy this path segement to gf */
713 if (remote_gf != NULL) {
714 struct getinfo_fid2path *ori_gf;
717 ori_gf = (struct getinfo_fid2path *)karg;
718 if (strlen(ori_gf->gf_u.gf_path) +
719 strlen(gf->gf_u.gf_path) > ori_gf->gf_pathlen)
720 GOTO(out_fid2path, rc = -EOVERFLOW);
722 ptr = ori_gf->gf_u.gf_path;
724 memmove(ptr + strlen(gf->gf_u.gf_path) + 1, ptr,
725 strlen(ori_gf->gf_u.gf_path));
727 strncpy(ptr, gf->gf_u.gf_path,
728 strlen(gf->gf_u.gf_path));
729 ptr += strlen(gf->gf_u.gf_path);
733 CDEBUG(D_INFO, "%s: get path %s "DFID" rec: "LPU64" ln: %u\n",
734 tgt->ltd_exp->exp_obd->obd_name,
735 gf->gf_u.gf_path, PFID(&gf->gf_fid), gf->gf_recno,
739 GOTO(out_fid2path, rc);
741 /* sigh, has to go to another MDT to do path building further */
742 if (remote_gf == NULL) {
743 remote_gf_size = sizeof(*remote_gf) + PATH_MAX;
744 OBD_ALLOC(remote_gf, remote_gf_size);
745 if (remote_gf == NULL)
746 GOTO(out_fid2path, rc = -ENOMEM);
747 remote_gf->gf_pathlen = PATH_MAX;
750 if (!fid_is_sane(&gf->gf_fid)) {
751 CERROR("%s: invalid FID "DFID": rc = %d\n",
752 tgt->ltd_exp->exp_obd->obd_name,
753 PFID(&gf->gf_fid), -EINVAL);
754 GOTO(out_fid2path, rc = -EINVAL);
757 tgt = lmv_find_target(lmv, &gf->gf_fid);
759 GOTO(out_fid2path, rc = -EINVAL);
761 remote_gf->gf_fid = gf->gf_fid;
762 remote_gf->gf_recno = -1;
763 remote_gf->gf_linkno = -1;
764 memset(remote_gf->gf_u.gf_path, 0, remote_gf->gf_pathlen);
765 *remote_gf->gf_u.gf_root_fid = root_fid;
767 goto repeat_fid2path;
770 if (remote_gf != NULL)
771 OBD_FREE(remote_gf, remote_gf_size);
775 static int lmv_hsm_req_count(struct lmv_obd *lmv,
776 const struct hsm_user_request *hur,
777 const struct lmv_tgt_desc *tgt_mds)
781 struct lmv_tgt_desc *curr_tgt;
783 /* count how many requests must be sent to the given target */
784 for (i = 0; i < hur->hur_request.hr_itemcount; i++) {
785 curr_tgt = lmv_find_target(lmv, &hur->hur_user_item[i].hui_fid);
786 if (IS_ERR(curr_tgt))
787 RETURN(PTR_ERR(curr_tgt));
788 if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid))
794 static int lmv_hsm_req_build(struct lmv_obd *lmv,
795 struct hsm_user_request *hur_in,
796 const struct lmv_tgt_desc *tgt_mds,
797 struct hsm_user_request *hur_out)
800 struct lmv_tgt_desc *curr_tgt;
802 /* build the hsm_user_request for the given target */
803 hur_out->hur_request = hur_in->hur_request;
805 for (i = 0; i < hur_in->hur_request.hr_itemcount; i++) {
806 curr_tgt = lmv_find_target(lmv,
807 &hur_in->hur_user_item[i].hui_fid);
808 if (IS_ERR(curr_tgt))
809 RETURN(PTR_ERR(curr_tgt));
810 if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid)) {
811 hur_out->hur_user_item[nr_out] =
812 hur_in->hur_user_item[i];
816 hur_out->hur_request.hr_itemcount = nr_out;
817 memcpy(hur_data(hur_out), hur_data(hur_in),
818 hur_in->hur_request.hr_data_len);
823 static int lmv_hsm_ct_unregister(struct lmv_obd *lmv, unsigned int cmd, int len,
824 struct lustre_kernelcomm *lk,
831 /* unregister request (call from llapi_hsm_copytool_fini) */
832 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
833 struct lmv_tgt_desc *tgt = lmv->tgts[i];
835 if (tgt == NULL || tgt->ltd_exp == NULL)
837 /* best effort: try to clean as much as possible
838 * (continue on error) */
839 obd_iocontrol(cmd, tgt->ltd_exp, len, lk, uarg);
842 /* Whatever the result, remove copytool from kuc groups.
843 * Unreached coordinators will get EPIPE on next requests
844 * and will unregister automatically.
846 rc = libcfs_kkuc_group_rem(lk->lk_uid, lk->lk_group);
851 static int lmv_hsm_ct_register(struct lmv_obd *lmv, unsigned int cmd, int len,
852 struct lustre_kernelcomm *lk, __user void *uarg)
857 bool any_set = false;
858 struct kkuc_ct_data kcd = { 0 };
861 /* All or nothing: try to register to all MDS.
862 * In case of failure, unregister from previous MDS,
863 * except if it because of inactive target. */
864 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
865 struct lmv_tgt_desc *tgt = lmv->tgts[i];
867 if (tgt == NULL || tgt->ltd_exp == NULL)
869 err = obd_iocontrol(cmd, tgt->ltd_exp, len, lk, uarg);
871 if (tgt->ltd_active) {
872 /* permanent error */
873 CERROR("%s: iocontrol MDC %s on MDT"
874 " idx %d cmd %x: err = %d\n",
875 class_exp2obd(lmv->exp)->obd_name,
876 tgt->ltd_uuid.uuid, i, cmd, err);
878 lk->lk_flags |= LK_FLG_STOP;
879 /* unregister from previous MDS */
880 for (j = 0; j < i; j++) {
882 if (tgt == NULL || tgt->ltd_exp == NULL)
884 obd_iocontrol(cmd, tgt->ltd_exp, len,
889 /* else: transient error.
890 * kuc will register to the missing MDT
898 /* no registration done: return error */
901 /* at least one registration done, with no failure */
902 filp = fget(lk->lk_wfd);
906 kcd.kcd_magic = KKUC_CT_DATA_MAGIC;
907 kcd.kcd_uuid = lmv->cluuid;
908 kcd.kcd_archive = lk->lk_data;
910 rc = libcfs_kkuc_group_add(filp, lk->lk_uid, lk->lk_group,
921 static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp,
922 int len, void *karg, void __user *uarg)
924 struct obd_device *obddev = class_exp2obd(exp);
925 struct lmv_obd *lmv = &obddev->u.lmv;
926 struct lmv_tgt_desc *tgt = NULL;
930 __u32 count = lmv->desc.ld_tgt_count;
937 case IOC_OBD_STATFS: {
938 struct obd_ioctl_data *data = karg;
939 struct obd_device *mdc_obd;
940 struct obd_statfs stat_buf = {0};
943 memcpy(&index, data->ioc_inlbuf2, sizeof(__u32));
944 if ((index >= count))
947 tgt = lmv->tgts[index];
948 if (tgt == NULL || !tgt->ltd_active)
951 mdc_obd = class_exp2obd(tgt->ltd_exp);
956 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(mdc_obd),
957 min((int) data->ioc_plen2,
958 (int) sizeof(struct obd_uuid))))
961 rc = obd_statfs(NULL, tgt->ltd_exp, &stat_buf,
962 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
966 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
967 min((int) data->ioc_plen1,
968 (int) sizeof(stat_buf))))
972 case OBD_IOC_QUOTACTL: {
973 struct if_quotactl *qctl = karg;
974 struct obd_quotactl *oqctl;
976 if (qctl->qc_valid == QC_MDTIDX) {
977 if (count <= qctl->qc_idx)
980 tgt = lmv->tgts[qctl->qc_idx];
981 if (tgt == NULL || tgt->ltd_exp == NULL)
983 } else if (qctl->qc_valid == QC_UUID) {
984 for (i = 0; i < count; i++) {
988 if (!obd_uuid_equals(&tgt->ltd_uuid,
992 if (tgt->ltd_exp == NULL)
1004 LASSERT(tgt != NULL && tgt->ltd_exp != NULL);
1005 OBD_ALLOC_PTR(oqctl);
1009 QCTL_COPY(oqctl, qctl);
1010 rc = obd_quotactl(tgt->ltd_exp, oqctl);
1012 QCTL_COPY(qctl, oqctl);
1013 qctl->qc_valid = QC_MDTIDX;
1014 qctl->obd_uuid = tgt->ltd_uuid;
1016 OBD_FREE_PTR(oqctl);
1019 case OBD_IOC_CHANGELOG_SEND:
1020 case OBD_IOC_CHANGELOG_CLEAR: {
1021 struct ioc_changelog *icc = karg;
1023 if (icc->icc_mdtindex >= count)
1026 tgt = lmv->tgts[icc->icc_mdtindex];
1027 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
1029 rc = obd_iocontrol(cmd, tgt->ltd_exp, sizeof(*icc), icc, NULL);
1032 case LL_IOC_GET_CONNECT_FLAGS: {
1034 if (tgt == NULL || tgt->ltd_exp == NULL)
1036 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1039 case LL_IOC_FID2MDTIDX: {
1040 struct lu_fid *fid = karg;
1043 rc = lmv_fld_lookup(lmv, fid, &mdt_index);
1047 /* Note: this is from llite(see ll_dir_ioctl()), @uarg does not
1048 * point to user space memory for FID2MDTIDX. */
1049 *(__u32 *)uarg = mdt_index;
1052 case OBD_IOC_FID2PATH: {
1053 rc = lmv_fid2path(exp, len, karg, uarg);
1056 case LL_IOC_HSM_STATE_GET:
1057 case LL_IOC_HSM_STATE_SET:
1058 case LL_IOC_HSM_ACTION: {
1059 struct md_op_data *op_data = karg;
1061 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1063 RETURN(PTR_ERR(tgt));
1065 if (tgt->ltd_exp == NULL)
1068 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1071 case LL_IOC_HSM_PROGRESS: {
1072 const struct hsm_progress_kernel *hpk = karg;
1074 tgt = lmv_find_target(lmv, &hpk->hpk_fid);
1076 RETURN(PTR_ERR(tgt));
1077 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1080 case LL_IOC_HSM_REQUEST: {
1081 struct hsm_user_request *hur = karg;
1082 unsigned int reqcount = hur->hur_request.hr_itemcount;
1087 /* if the request is about a single fid
1088 * or if there is a single MDS, no need to split
1090 if (reqcount == 1 || count == 1) {
1091 tgt = lmv_find_target(lmv,
1092 &hur->hur_user_item[0].hui_fid);
1094 RETURN(PTR_ERR(tgt));
1095 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1097 /* split fid list to their respective MDS */
1098 for (i = 0; i < count; i++) {
1101 struct hsm_user_request *req;
1104 if (tgt == NULL || tgt->ltd_exp == NULL)
1107 nr = lmv_hsm_req_count(lmv, hur, tgt);
1110 if (nr == 0) /* nothing for this MDS */
1113 /* build a request with fids for this MDS */
1114 reqlen = offsetof(typeof(*hur),
1116 + hur->hur_request.hr_data_len;
1117 OBD_ALLOC_LARGE(req, reqlen);
1120 rc1 = lmv_hsm_req_build(lmv, hur, tgt, req);
1122 GOTO(hsm_req_err, rc1);
1123 rc1 = obd_iocontrol(cmd, tgt->ltd_exp, reqlen,
1126 if (rc1 != 0 && rc == 0)
1128 OBD_FREE_LARGE(req, reqlen);
1133 case LL_IOC_LOV_SWAP_LAYOUTS: {
1134 struct md_op_data *op_data = karg;
1135 struct lmv_tgt_desc *tgt1, *tgt2;
1137 tgt1 = lmv_find_target(lmv, &op_data->op_fid1);
1139 RETURN(PTR_ERR(tgt1));
1141 tgt2 = lmv_find_target(lmv, &op_data->op_fid2);
1143 RETURN(PTR_ERR(tgt2));
1145 if ((tgt1->ltd_exp == NULL) || (tgt2->ltd_exp == NULL))
1148 /* only files on same MDT can have their layouts swapped */
1149 if (tgt1->ltd_idx != tgt2->ltd_idx)
1152 rc = obd_iocontrol(cmd, tgt1->ltd_exp, len, karg, uarg);
1155 case LL_IOC_HSM_CT_START: {
1156 struct lustre_kernelcomm *lk = karg;
1157 if (lk->lk_flags & LK_FLG_STOP)
1158 rc = lmv_hsm_ct_unregister(lmv, cmd, len, lk, uarg);
1160 rc = lmv_hsm_ct_register(lmv, cmd, len, lk, uarg);
1164 for (i = 0; i < count; i++) {
1165 struct obd_device *mdc_obd;
1169 if (tgt == NULL || tgt->ltd_exp == NULL)
1171 /* ll_umount_begin() sets force flag but for lmv, not
1172 * mdc. Let's pass it through */
1173 mdc_obd = class_exp2obd(tgt->ltd_exp);
1174 mdc_obd->obd_force = obddev->obd_force;
1175 err = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1177 if (tgt->ltd_active) {
1178 CERROR("error: iocontrol MDC %s on MDT"
1179 " idx %d cmd %x: err = %d\n",
1180 tgt->ltd_uuid.uuid, i, cmd, err);
1194 static int lmv_all_chars_policy(int count, const char *name,
1205 static int lmv_nid_policy(struct lmv_obd *lmv)
1207 struct obd_import *imp;
1211 * XXX: To get nid we assume that underlying obd device is mdc.
1213 imp = class_exp2cliimp(lmv->tgts[0].ltd_exp);
1214 id = imp->imp_connection->c_self ^ (imp->imp_connection->c_self >> 32);
1215 return id % lmv->desc.ld_tgt_count;
1218 static int lmv_choose_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
1219 placement_policy_t placement)
1221 switch (placement) {
1222 case PLACEMENT_CHAR_POLICY:
1223 return lmv_all_chars_policy(lmv->desc.ld_tgt_count,
1225 op_data->op_namelen);
1226 case PLACEMENT_NID_POLICY:
1227 return lmv_nid_policy(lmv);
1233 CERROR("Unsupported placement policy %x\n", placement);
1239 * This is _inode_ placement policy function (not name).
1241 static int lmv_placement_policy(struct obd_device *obd,
1242 struct md_op_data *op_data, u32 *mds)
1244 struct lmv_obd *lmv = &obd->u.lmv;
1247 LASSERT(mds != NULL);
1249 if (lmv->desc.ld_tgt_count == 1) {
1254 if (op_data->op_default_stripe_offset != -1) {
1255 *mds = op_data->op_default_stripe_offset;
1260 * If stripe_offset is provided during setdirstripe
1261 * (setdirstripe -i xx), xx MDS will be choosen.
1263 if (op_data->op_cli_flags & CLI_SET_MEA && op_data->op_data != NULL) {
1264 struct lmv_user_md *lum;
1266 lum = op_data->op_data;
1268 if (le32_to_cpu(lum->lum_stripe_offset) != (__u32)-1) {
1269 *mds = le32_to_cpu(lum->lum_stripe_offset);
1271 /* -1 means default, which will be in the same MDT with
1273 *mds = op_data->op_mds;
1274 lum->lum_stripe_offset = cpu_to_le32(op_data->op_mds);
1277 /* Allocate new fid on target according to operation type and
1278 * parent home mds. */
1279 *mds = op_data->op_mds;
1285 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds)
1287 struct lmv_tgt_desc *tgt;
1291 tgt = lmv_get_target(lmv, mds, NULL);
1293 RETURN(PTR_ERR(tgt));
1296 * New seq alloc and FLD setup should be atomic. Otherwise we may find
1297 * on server that seq in new allocated fid is not yet known.
1299 mutex_lock(&tgt->ltd_fid_mutex);
1301 if (tgt->ltd_active == 0 || tgt->ltd_exp == NULL)
1302 GOTO(out, rc = -ENODEV);
1305 * Asking underlying tgt layer to allocate new fid.
1307 rc = obd_fid_alloc(NULL, tgt->ltd_exp, fid, NULL);
1309 LASSERT(fid_is_sane(fid));
1315 mutex_unlock(&tgt->ltd_fid_mutex);
1319 int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp,
1320 struct lu_fid *fid, struct md_op_data *op_data)
1322 struct obd_device *obd = class_exp2obd(exp);
1323 struct lmv_obd *lmv = &obd->u.lmv;
1328 LASSERT(op_data != NULL);
1329 LASSERT(fid != NULL);
1331 rc = lmv_placement_policy(obd, op_data, &mds);
1333 CERROR("Can't get target for allocating fid, "
1338 rc = __lmv_fid_alloc(lmv, fid, mds);
1340 CERROR("Can't alloc new fid, rc %d\n", rc);
1347 static int lmv_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
1349 struct lmv_obd *lmv = &obd->u.lmv;
1350 struct lmv_desc *desc;
1354 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
1355 CERROR("LMV setup requires a descriptor\n");
1359 desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1);
1360 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
1361 CERROR("Lmv descriptor size wrong: %d > %d\n",
1362 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
1366 lmv->tgts_size = 32U;
1367 OBD_ALLOC(lmv->tgts, sizeof(*lmv->tgts) * lmv->tgts_size);
1368 if (lmv->tgts == NULL)
1371 obd_str2uuid(&lmv->desc.ld_uuid, desc->ld_uuid.uuid);
1372 lmv->desc.ld_tgt_count = 0;
1373 lmv->desc.ld_active_tgt_count = 0;
1374 lmv->max_def_easize = 0;
1375 lmv->max_easize = 0;
1376 lmv->lmv_placement = PLACEMENT_CHAR_POLICY;
1378 spin_lock_init(&lmv->lmv_lock);
1379 mutex_init(&lmv->lmv_init_mutex);
1381 #ifdef CONFIG_PROC_FS
1382 obd->obd_vars = lprocfs_lmv_obd_vars;
1383 lprocfs_obd_setup(obd);
1384 lprocfs_alloc_md_stats(obd, 0);
1385 rc = lprocfs_seq_create(obd->obd_proc_entry, "target_obd",
1386 0444, &lmv_proc_target_fops, obd);
1388 CWARN("%s: error adding LMV target_obd file: rc = %d\n",
1391 rc = fld_client_init(&lmv->lmv_fld, obd->obd_name,
1392 LUSTRE_CLI_FLD_HASH_DHT);
1394 CERROR("Can't init FLD, err %d\n", rc);
1404 static int lmv_cleanup(struct obd_device *obd)
1406 struct lmv_obd *lmv = &obd->u.lmv;
1409 fld_client_fini(&lmv->lmv_fld);
1410 if (lmv->tgts != NULL) {
1412 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1413 if (lmv->tgts[i] == NULL)
1415 lmv_del_target(lmv, i);
1417 OBD_FREE(lmv->tgts, sizeof(*lmv->tgts) * lmv->tgts_size);
1423 static int lmv_process_config(struct obd_device *obd, size_t len, void *buf)
1425 struct lustre_cfg *lcfg = buf;
1426 struct obd_uuid obd_uuid;
1432 switch (lcfg->lcfg_command) {
1434 /* modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDT0000_UUID
1435 * 2:0 3:1 4:lustre-MDT0000-mdc_UUID */
1436 if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid))
1437 GOTO(out, rc = -EINVAL);
1439 obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1));
1441 if (sscanf(lustre_cfg_buf(lcfg, 2), "%u", &index) != 1)
1442 GOTO(out, rc = -EINVAL);
1443 if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", &gen) != 1)
1444 GOTO(out, rc = -EINVAL);
1445 rc = lmv_add_target(obd, &obd_uuid, index, gen);
1448 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1449 GOTO(out, rc = -EINVAL);
1455 static int lmv_statfs(const struct lu_env *env, struct obd_export *exp,
1456 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
1458 struct obd_device *obd = class_exp2obd(exp);
1459 struct lmv_obd *lmv = &obd->u.lmv;
1460 struct obd_statfs *temp;
1465 rc = lmv_check_connect(obd);
1469 OBD_ALLOC(temp, sizeof(*temp));
1473 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1474 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1477 rc = obd_statfs(env, lmv->tgts[i]->ltd_exp, temp,
1480 CERROR("can't stat MDS #%d (%s), error %d\n", i,
1481 lmv->tgts[i]->ltd_exp->exp_obd->obd_name,
1483 GOTO(out_free_temp, rc);
1488 /* If the statfs is from mount, it will needs
1489 * retrieve necessary information from MDT0.
1490 * i.e. mount does not need the merged osfs
1492 * And also clients can be mounted as long as
1493 * MDT0 is in service*/
1494 if (flags & OBD_STATFS_FOR_MDT0)
1495 GOTO(out_free_temp, rc);
1497 osfs->os_bavail += temp->os_bavail;
1498 osfs->os_blocks += temp->os_blocks;
1499 osfs->os_ffree += temp->os_ffree;
1500 osfs->os_files += temp->os_files;
1506 OBD_FREE(temp, sizeof(*temp));
1510 static int lmv_get_root(struct obd_export *exp, const char *fileset,
1513 struct obd_device *obd = exp->exp_obd;
1514 struct lmv_obd *lmv = &obd->u.lmv;
1518 rc = lmv_check_connect(obd);
1522 rc = md_get_root(lmv->tgts[0]->ltd_exp, fileset, fid);
1526 static int lmv_getxattr(struct obd_export *exp, const struct lu_fid *fid,
1527 u64 valid, const char *name,
1528 const char *input, int input_size, int output_size,
1529 int flags, struct ptlrpc_request **request)
1531 struct obd_device *obd = exp->exp_obd;
1532 struct lmv_obd *lmv = &obd->u.lmv;
1533 struct lmv_tgt_desc *tgt;
1537 rc = lmv_check_connect(obd);
1541 tgt = lmv_find_target(lmv, fid);
1543 RETURN(PTR_ERR(tgt));
1545 rc = md_getxattr(tgt->ltd_exp, fid, valid, name, input,
1546 input_size, output_size, flags, request);
1551 static int lmv_setxattr(struct obd_export *exp, const struct lu_fid *fid,
1552 u64 valid, const char *name,
1553 const char *input, int input_size, int output_size,
1554 int flags, __u32 suppgid,
1555 struct ptlrpc_request **request)
1557 struct obd_device *obd = exp->exp_obd;
1558 struct lmv_obd *lmv = &obd->u.lmv;
1559 struct lmv_tgt_desc *tgt;
1563 rc = lmv_check_connect(obd);
1567 tgt = lmv_find_target(lmv, fid);
1569 RETURN(PTR_ERR(tgt));
1571 rc = md_setxattr(tgt->ltd_exp, fid, valid, name, input,
1572 input_size, output_size, flags, suppgid,
1578 static int lmv_getattr(struct obd_export *exp, struct md_op_data *op_data,
1579 struct ptlrpc_request **request)
1581 struct obd_device *obd = exp->exp_obd;
1582 struct lmv_obd *lmv = &obd->u.lmv;
1583 struct lmv_tgt_desc *tgt;
1587 rc = lmv_check_connect(obd);
1591 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1593 RETURN(PTR_ERR(tgt));
1595 if (op_data->op_flags & MF_GET_MDT_IDX) {
1596 op_data->op_mds = tgt->ltd_idx;
1600 rc = md_getattr(tgt->ltd_exp, op_data, request);
1605 static int lmv_null_inode(struct obd_export *exp, const struct lu_fid *fid)
1607 struct obd_device *obd = exp->exp_obd;
1608 struct lmv_obd *lmv = &obd->u.lmv;
1613 rc = lmv_check_connect(obd);
1617 CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid));
1620 * With DNE every object can have two locks in different namespaces:
1621 * lookup lock in space of MDT storing direntry and update/open lock in
1622 * space of MDT storing inode.
1624 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1625 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1627 md_null_inode(lmv->tgts[i]->ltd_exp, fid);
1633 static int lmv_close(struct obd_export *exp, struct md_op_data *op_data,
1634 struct md_open_data *mod, struct ptlrpc_request **request)
1636 struct obd_device *obd = exp->exp_obd;
1637 struct lmv_obd *lmv = &obd->u.lmv;
1638 struct lmv_tgt_desc *tgt;
1642 rc = lmv_check_connect(obd);
1646 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1648 RETURN(PTR_ERR(tgt));
1650 CDEBUG(D_INODE, "CLOSE "DFID"\n", PFID(&op_data->op_fid1));
1651 rc = md_close(tgt->ltd_exp, op_data, mod, request);
1656 * Choosing the MDT by name or FID in @op_data.
1657 * For non-striped directory, it will locate MDT by fid.
1658 * For striped-directory, it will locate MDT by name. And also
1659 * it will reset op_fid1 with the FID of the choosen stripe.
1661 struct lmv_tgt_desc *
1662 lmv_locate_target_for_name(struct lmv_obd *lmv, struct lmv_stripe_md *lsm,
1663 const char *name, int namelen, struct lu_fid *fid,
1666 struct lmv_tgt_desc *tgt;
1667 const struct lmv_oinfo *oinfo;
1669 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_NAME_HASH)) {
1670 if (cfs_fail_val >= lsm->lsm_md_stripe_count)
1671 RETURN(ERR_PTR(-EBADF));
1672 oinfo = &lsm->lsm_md_oinfo[cfs_fail_val];
1674 oinfo = lsm_name_to_stripe_info(lsm, name, namelen);
1676 RETURN(ERR_CAST(oinfo));
1680 *fid = oinfo->lmo_fid;
1682 *mds = oinfo->lmo_mds;
1684 tgt = lmv_get_target(lmv, oinfo->lmo_mds, NULL);
1686 CDEBUG(D_INFO, "locate on mds %u "DFID"\n", oinfo->lmo_mds,
1687 PFID(&oinfo->lmo_fid));
1692 * Locate mds by fid or name
1694 * For striped directory (lsm != NULL), it will locate the stripe
1695 * by name hash (see lsm_name_to_stripe_info()). Note: if the hash_type
1696 * is unknown, it will return -EBADFD, and lmv_intent_lookup might need
1697 * walk through all of stripes to locate the entry.
1699 * For normal direcotry, it will locate MDS by FID directly.
1700 * \param[in] lmv LMV device
1701 * \param[in] op_data client MD stack parameters, name, namelen
1703 * \param[in] fid object FID used to locate MDS.
1705 * retval pointer to the lmv_tgt_desc if succeed.
1706 * ERR_PTR(errno) if failed.
1708 struct lmv_tgt_desc*
1709 lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
1712 struct lmv_stripe_md *lsm = op_data->op_mea1;
1713 struct lmv_tgt_desc *tgt;
1715 /* During creating VOLATILE file, it should honor the mdt
1716 * index if the file under striped dir is being restored, see
1718 if (op_data->op_bias & MDS_CREATE_VOLATILE &&
1719 (int)op_data->op_mds != -1) {
1721 tgt = lmv_get_target(lmv, op_data->op_mds, NULL);
1726 /* refill the right parent fid */
1727 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1728 struct lmv_oinfo *oinfo;
1730 oinfo = &lsm->lsm_md_oinfo[i];
1731 if (oinfo->lmo_mds == op_data->op_mds) {
1732 *fid = oinfo->lmo_fid;
1737 if (i == lsm->lsm_md_stripe_count)
1738 *fid = lsm->lsm_md_oinfo[0].lmo_fid;
1744 if (lsm == NULL || op_data->op_namelen == 0) {
1745 tgt = lmv_find_target(lmv, fid);
1749 op_data->op_mds = tgt->ltd_idx;
1753 return lmv_locate_target_for_name(lmv, lsm, op_data->op_name,
1754 op_data->op_namelen, fid,
1758 int lmv_create(struct obd_export *exp, struct md_op_data *op_data,
1759 const void *data, size_t datalen, umode_t mode, uid_t uid,
1760 gid_t gid, cfs_cap_t cap_effective, __u64 rdev,
1761 struct ptlrpc_request **request)
1763 struct obd_device *obd = exp->exp_obd;
1764 struct lmv_obd *lmv = &obd->u.lmv;
1765 struct lmv_tgt_desc *tgt;
1769 rc = lmv_check_connect(obd);
1773 if (!lmv->desc.ld_active_tgt_count)
1776 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1778 RETURN(PTR_ERR(tgt));
1780 CDEBUG(D_INODE, "CREATE name '%.*s' on "DFID" -> mds #%x\n",
1781 (int)op_data->op_namelen, op_data->op_name,
1782 PFID(&op_data->op_fid1), op_data->op_mds);
1784 rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
1787 if (exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE) {
1788 /* Send the create request to the MDT where the object
1789 * will be located */
1790 tgt = lmv_find_target(lmv, &op_data->op_fid2);
1792 RETURN(PTR_ERR(tgt));
1794 op_data->op_mds = tgt->ltd_idx;
1796 CDEBUG(D_CONFIG, "Server doesn't support striped dirs\n");
1799 CDEBUG(D_INODE, "CREATE obj "DFID" -> mds #%x\n",
1800 PFID(&op_data->op_fid2), op_data->op_mds);
1802 op_data->op_flags |= MF_MDC_CANCEL_FID1;
1803 rc = md_create(tgt->ltd_exp, op_data, data, datalen, mode, uid, gid,
1804 cap_effective, rdev, request);
1806 if (*request == NULL)
1808 CDEBUG(D_INODE, "Created - "DFID"\n", PFID(&op_data->op_fid2));
1814 lmv_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
1815 const union ldlm_policy_data *policy,
1816 struct lookup_intent *it, struct md_op_data *op_data,
1817 struct lustre_handle *lockh, __u64 extra_lock_flags)
1819 struct obd_device *obd = exp->exp_obd;
1820 struct lmv_obd *lmv = &obd->u.lmv;
1821 struct lmv_tgt_desc *tgt;
1825 rc = lmv_check_connect(obd);
1829 CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID"\n",
1830 LL_IT2STR(it), PFID(&op_data->op_fid1));
1832 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1834 RETURN(PTR_ERR(tgt));
1836 CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID" -> mds #%u\n",
1837 LL_IT2STR(it), PFID(&op_data->op_fid1), tgt->ltd_idx);
1839 rc = md_enqueue(tgt->ltd_exp, einfo, policy, it, op_data, lockh,
1846 lmv_getattr_name(struct obd_export *exp,struct md_op_data *op_data,
1847 struct ptlrpc_request **preq)
1849 struct ptlrpc_request *req = NULL;
1850 struct obd_device *obd = exp->exp_obd;
1851 struct lmv_obd *lmv = &obd->u.lmv;
1852 struct lmv_tgt_desc *tgt;
1853 struct mdt_body *body;
1857 rc = lmv_check_connect(obd);
1861 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1863 RETURN(PTR_ERR(tgt));
1865 CDEBUG(D_INODE, "GETATTR_NAME for %*s on "DFID" -> mds #%d\n",
1866 (int)op_data->op_namelen, op_data->op_name,
1867 PFID(&op_data->op_fid1), tgt->ltd_idx);
1869 rc = md_getattr_name(tgt->ltd_exp, op_data, preq);
1873 body = req_capsule_server_get(&(*preq)->rq_pill, &RMF_MDT_BODY);
1874 LASSERT(body != NULL);
1876 if (body->mbo_valid & OBD_MD_MDS) {
1877 struct lu_fid rid = body->mbo_fid1;
1878 CDEBUG(D_INODE, "Request attrs for "DFID"\n",
1881 tgt = lmv_find_target(lmv, &rid);
1883 ptlrpc_req_finished(*preq);
1885 RETURN(PTR_ERR(tgt));
1888 op_data->op_fid1 = rid;
1889 op_data->op_valid |= OBD_MD_FLCROSSREF;
1890 op_data->op_namelen = 0;
1891 op_data->op_name = NULL;
1892 rc = md_getattr_name(tgt->ltd_exp, op_data, &req);
1893 ptlrpc_req_finished(*preq);
1900 #define md_op_data_fid(op_data, fl) \
1901 (fl == MF_MDC_CANCEL_FID1 ? &op_data->op_fid1 : \
1902 fl == MF_MDC_CANCEL_FID2 ? &op_data->op_fid2 : \
1903 fl == MF_MDC_CANCEL_FID3 ? &op_data->op_fid3 : \
1904 fl == MF_MDC_CANCEL_FID4 ? &op_data->op_fid4 : \
1907 static int lmv_early_cancel(struct obd_export *exp, struct lmv_tgt_desc *tgt,
1908 struct md_op_data *op_data, __u32 op_tgt,
1909 enum ldlm_mode mode, int bits, int flag)
1911 struct lu_fid *fid = md_op_data_fid(op_data, flag);
1912 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
1913 union ldlm_policy_data policy = { { 0 } };
1917 if (!fid_is_sane(fid))
1921 tgt = lmv_find_target(lmv, fid);
1923 RETURN(PTR_ERR(tgt));
1926 if (tgt->ltd_idx != op_tgt) {
1927 CDEBUG(D_INODE, "EARLY_CANCEL on "DFID"\n", PFID(fid));
1928 policy.l_inodebits.bits = bits;
1929 rc = md_cancel_unused(tgt->ltd_exp, fid, &policy,
1930 mode, LCF_ASYNC, NULL);
1933 "EARLY_CANCEL skip operation target %d on "DFID"\n",
1935 op_data->op_flags |= flag;
1943 * llite passes fid of an target inode in op_data->op_fid1 and id of directory in
1946 static int lmv_link(struct obd_export *exp, struct md_op_data *op_data,
1947 struct ptlrpc_request **request)
1949 struct obd_device *obd = exp->exp_obd;
1950 struct lmv_obd *lmv = &obd->u.lmv;
1951 struct lmv_tgt_desc *tgt;
1955 rc = lmv_check_connect(obd);
1959 LASSERT(op_data->op_namelen != 0);
1961 CDEBUG(D_INODE, "LINK "DFID":%*s to "DFID"\n",
1962 PFID(&op_data->op_fid2), (int)op_data->op_namelen,
1963 op_data->op_name, PFID(&op_data->op_fid1));
1965 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
1966 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
1967 op_data->op_cap = cfs_curproc_cap_pack();
1968 if (op_data->op_mea2 != NULL) {
1969 struct lmv_stripe_md *lsm = op_data->op_mea2;
1970 const struct lmv_oinfo *oinfo;
1972 oinfo = lsm_name_to_stripe_info(lsm, op_data->op_name,
1973 op_data->op_namelen);
1975 RETURN(PTR_ERR(oinfo));
1977 op_data->op_fid2 = oinfo->lmo_fid;
1980 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
1982 RETURN(PTR_ERR(tgt));
1985 * Cancel UPDATE lock on child (fid1).
1987 op_data->op_flags |= MF_MDC_CANCEL_FID2;
1988 rc = lmv_early_cancel(exp, NULL, op_data, tgt->ltd_idx, LCK_EX,
1989 MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1);
1993 rc = md_link(tgt->ltd_exp, op_data, request);
1998 static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data,
1999 const char *old, size_t oldlen,
2000 const char *new, size_t newlen,
2001 struct ptlrpc_request **request)
2003 struct obd_device *obd = exp->exp_obd;
2004 struct lmv_obd *lmv = &obd->u.lmv;
2005 struct lmv_tgt_desc *src_tgt;
2006 struct lmv_tgt_desc *tgt_tgt;
2007 struct obd_export *target_exp;
2008 struct mdt_body *body;
2012 LASSERT(oldlen != 0);
2014 CDEBUG(D_INODE, "RENAME %.*s in "DFID":%d to %.*s in "DFID":%d\n",
2015 (int)oldlen, old, PFID(&op_data->op_fid1),
2016 op_data->op_mea1 ? op_data->op_mea1->lsm_md_stripe_count : 0,
2017 (int)newlen, new, PFID(&op_data->op_fid2),
2018 op_data->op_mea2 ? op_data->op_mea2->lsm_md_stripe_count : 0);
2020 rc = lmv_check_connect(obd);
2024 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2025 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2026 op_data->op_cap = cfs_curproc_cap_pack();
2027 if (op_data->op_cli_flags & CLI_MIGRATE) {
2028 LASSERTF(fid_is_sane(&op_data->op_fid3), "invalid FID "DFID"\n",
2029 PFID(&op_data->op_fid3));
2031 if (op_data->op_mea1 != NULL) {
2032 struct lmv_stripe_md *lsm = op_data->op_mea1;
2033 struct lmv_tgt_desc *tmp;
2035 /* Fix the parent fid for striped dir */
2036 tmp = lmv_locate_target_for_name(lmv, lsm, old,
2041 RETURN(PTR_ERR(tmp));
2044 rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
2048 src_tgt = lmv_find_target(lmv, &op_data->op_fid3);
2049 if (IS_ERR(src_tgt))
2050 RETURN(PTR_ERR(src_tgt));
2052 target_exp = src_tgt->ltd_exp;
2054 if (op_data->op_mea1 != NULL) {
2055 struct lmv_stripe_md *lsm = op_data->op_mea1;
2057 src_tgt = lmv_locate_target_for_name(lmv, lsm, old,
2062 src_tgt = lmv_find_target(lmv, &op_data->op_fid1);
2064 if (IS_ERR(src_tgt))
2065 RETURN(PTR_ERR(src_tgt));
2068 if (op_data->op_mea2 != NULL) {
2069 struct lmv_stripe_md *lsm = op_data->op_mea2;
2071 tgt_tgt = lmv_locate_target_for_name(lmv, lsm, new,
2076 tgt_tgt = lmv_find_target(lmv, &op_data->op_fid2);
2079 if (IS_ERR(tgt_tgt))
2080 RETURN(PTR_ERR(tgt_tgt));
2082 target_exp = tgt_tgt->ltd_exp;
2086 * LOOKUP lock on src child (fid3) should also be cancelled for
2087 * src_tgt in mdc_rename.
2089 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
2092 * Cancel UPDATE locks on tgt parent (fid2), tgt_tgt is its
2095 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
2096 LCK_EX, MDS_INODELOCK_UPDATE,
2097 MF_MDC_CANCEL_FID2);
2102 * Cancel LOOKUP locks on source child (fid3) for parent tgt_tgt.
2104 if (fid_is_sane(&op_data->op_fid3)) {
2105 struct lmv_tgt_desc *tgt;
2107 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2109 RETURN(PTR_ERR(tgt));
2111 /* Cancel LOOKUP lock on its parent */
2112 rc = lmv_early_cancel(exp, tgt, op_data, src_tgt->ltd_idx,
2113 LCK_EX, MDS_INODELOCK_LOOKUP,
2114 MF_MDC_CANCEL_FID3);
2118 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
2119 LCK_EX, MDS_INODELOCK_FULL,
2120 MF_MDC_CANCEL_FID3);
2127 * Cancel all the locks on tgt child (fid4).
2129 if (fid_is_sane(&op_data->op_fid4)) {
2130 struct lmv_tgt_desc *tgt;
2132 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
2133 LCK_EX, MDS_INODELOCK_FULL,
2134 MF_MDC_CANCEL_FID4);
2138 tgt = lmv_find_target(lmv, &op_data->op_fid4);
2140 RETURN(PTR_ERR(tgt));
2142 /* Since the target child might be destroyed, and it might
2143 * become orphan, and we can only check orphan on the local
2144 * MDT right now, so we send rename request to the MDT where
2145 * target child is located. If target child does not exist,
2146 * then it will send the request to the target parent */
2147 target_exp = tgt->ltd_exp;
2150 rc = md_rename(target_exp, op_data, old, oldlen, new, newlen,
2153 if (rc != 0 && rc != -EXDEV)
2156 body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
2160 /* Not cross-ref case, just get out of here. */
2161 if (likely(!(body->mbo_valid & OBD_MD_MDS)))
2164 CDEBUG(D_INODE, "%s: try rename to another MDT for "DFID"\n",
2165 exp->exp_obd->obd_name, PFID(&body->mbo_fid1));
2167 op_data->op_fid4 = body->mbo_fid1;
2168 ptlrpc_req_finished(*request);
2173 static int lmv_setattr(struct obd_export *exp, struct md_op_data *op_data,
2174 void *ea, size_t ealen, struct ptlrpc_request **request)
2176 struct obd_device *obd = exp->exp_obd;
2177 struct lmv_obd *lmv = &obd->u.lmv;
2178 struct lmv_tgt_desc *tgt;
2182 rc = lmv_check_connect(obd);
2186 CDEBUG(D_INODE, "SETATTR for "DFID", valid 0x%x\n",
2187 PFID(&op_data->op_fid1), op_data->op_attr.ia_valid);
2189 op_data->op_flags |= MF_MDC_CANCEL_FID1;
2190 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2192 RETURN(PTR_ERR(tgt));
2194 rc = md_setattr(tgt->ltd_exp, op_data, ea, ealen, request);
2199 static int lmv_fsync(struct obd_export *exp, const struct lu_fid *fid,
2200 struct ptlrpc_request **request)
2202 struct obd_device *obd = exp->exp_obd;
2203 struct lmv_obd *lmv = &obd->u.lmv;
2204 struct lmv_tgt_desc *tgt;
2208 rc = lmv_check_connect(obd);
2212 tgt = lmv_find_target(lmv, fid);
2214 RETURN(PTR_ERR(tgt));
2216 rc = md_fsync(tgt->ltd_exp, fid, request);
2221 * Get current minimum entry from striped directory
2223 * This function will search the dir entry, whose hash value is the
2224 * closest(>=) to @hash_offset, from all of sub-stripes, and it is
2225 * only being called for striped directory.
2227 * \param[in] exp export of LMV
2228 * \param[in] op_data parameters transferred beween client MD stack
2229 * stripe_information will be included in this
2231 * \param[in] cb_op ldlm callback being used in enqueue in
2233 * \param[in] hash_offset the hash value, which is used to locate
2234 * minum(closet) dir entry
2235 * \param[in|out] stripe_offset the caller use this to indicate the stripe
2236 * index of last entry, so to avoid hash conflict
2237 * between stripes. It will also be used to
2238 * return the stripe index of current dir entry.
2239 * \param[in|out] entp the minum entry and it also is being used
2240 * to input the last dir entry to resolve the
2243 * \param[out] ppage the page which holds the minum entry
2245 * \retval = 0 get the entry successfully
2246 * negative errno (< 0) does not get the entry
2248 static int lmv_get_min_striped_entry(struct obd_export *exp,
2249 struct md_op_data *op_data,
2250 struct md_callback *cb_op,
2251 __u64 hash_offset, int *stripe_offset,
2252 struct lu_dirent **entp,
2253 struct page **ppage)
2255 struct obd_device *obd = exp->exp_obd;
2256 struct lmv_obd *lmv = &obd->u.lmv;
2257 struct lmv_stripe_md *lsm = op_data->op_mea1;
2258 struct lmv_tgt_desc *tgt;
2260 struct lu_dirent *min_ent = NULL;
2261 struct page *min_page = NULL;
2267 stripe_count = lsm->lsm_md_stripe_count;
2268 for (i = 0; i < stripe_count; i++) {
2269 struct lu_dirent *ent = NULL;
2270 struct page *page = NULL;
2271 struct lu_dirpage *dp;
2272 __u64 stripe_hash = hash_offset;
2274 tgt = lmv_get_target(lmv, lsm->lsm_md_oinfo[i].lmo_mds, NULL);
2276 GOTO(out, rc = PTR_ERR(tgt));
2278 /* op_data will be shared by each stripe, so we need
2279 * reset these value for each stripe */
2280 op_data->op_fid1 = lsm->lsm_md_oinfo[i].lmo_fid;
2281 op_data->op_fid2 = lsm->lsm_md_oinfo[i].lmo_fid;
2282 op_data->op_data = lsm->lsm_md_oinfo[i].lmo_root;
2284 rc = md_read_page(tgt->ltd_exp, op_data, cb_op, stripe_hash,
2289 dp = page_address(page);
2290 for (ent = lu_dirent_start(dp); ent != NULL;
2291 ent = lu_dirent_next(ent)) {
2292 /* Skip dummy entry */
2293 if (le16_to_cpu(ent->lde_namelen) == 0)
2296 if (le64_to_cpu(ent->lde_hash) < hash_offset)
2299 if (le64_to_cpu(ent->lde_hash) == hash_offset &&
2300 (*entp == ent || i < *stripe_offset))
2303 /* skip . and .. for other stripes */
2305 (strncmp(ent->lde_name, ".",
2306 le16_to_cpu(ent->lde_namelen)) == 0 ||
2307 strncmp(ent->lde_name, "..",
2308 le16_to_cpu(ent->lde_namelen)) == 0))
2314 stripe_hash = le64_to_cpu(dp->ldp_hash_end);
2317 page_cache_release(page);
2320 /* reach the end of current stripe, go to next stripe */
2321 if (stripe_hash == MDS_DIR_END_OFF)
2327 if (min_ent != NULL) {
2328 if (le64_to_cpu(min_ent->lde_hash) >
2329 le64_to_cpu(ent->lde_hash)) {
2332 page_cache_release(min_page);
2337 page_cache_release(page);
2348 if (*ppage != NULL) {
2350 page_cache_release(*ppage);
2352 *stripe_offset = min_idx;
2359 * Build dir entry page from a striped directory
2361 * This function gets one entry by @offset from a striped directory. It will
2362 * read entries from all of stripes, and choose one closest to the required
2363 * offset(&offset). A few notes
2364 * 1. skip . and .. for non-zero stripes, because there can only have one .
2365 * and .. in a directory.
2366 * 2. op_data will be shared by all of stripes, instead of allocating new
2367 * one, so need to restore before reusing.
2368 * 3. release the entry page if that is not being chosen.
2370 * \param[in] exp obd export refer to LMV
2371 * \param[in] op_data hold those MD parameters of read_entry
2372 * \param[in] cb_op ldlm callback being used in enqueue in mdc_read_entry
2373 * \param[out] ldp the entry being read
2374 * \param[out] ppage the page holding the entry. Note: because the entry
2375 * will be accessed in upper layer, so we need hold the
2376 * page until the usages of entry is finished, see
2377 * ll_dir_entry_next.
2379 * retval =0 if get entry successfully
2380 * <0 cannot get entry
2382 static int lmv_read_striped_page(struct obd_export *exp,
2383 struct md_op_data *op_data,
2384 struct md_callback *cb_op,
2385 __u64 offset, struct page **ppage)
2387 struct obd_device *obd = exp->exp_obd;
2388 struct lu_fid master_fid = op_data->op_fid1;
2389 struct inode *master_inode = op_data->op_data;
2390 __u64 hash_offset = offset;
2391 struct lu_dirpage *dp;
2392 struct page *min_ent_page = NULL;
2393 struct page *ent_page = NULL;
2394 struct lu_dirent *ent;
2397 struct lu_dirent *min_ent = NULL;
2398 struct lu_dirent *last_ent;
2403 rc = lmv_check_connect(obd);
2407 /* Allocate a page and read entries from all of stripes and fill
2408 * the page by hash order */
2409 ent_page = alloc_page(GFP_KERNEL);
2410 if (ent_page == NULL)
2413 /* Initialize the entry page */
2414 dp = kmap(ent_page);
2415 memset(dp, 0, sizeof(*dp));
2416 dp->ldp_hash_start = cpu_to_le64(offset);
2417 dp->ldp_flags |= LDF_COLLIDE;
2420 left_bytes = PAGE_CACHE_SIZE - sizeof(*dp);
2426 /* Find the minum entry from all sub-stripes */
2427 rc = lmv_get_min_striped_entry(exp, op_data, cb_op, hash_offset,
2433 /* If it can not get minum entry, it means it already reaches
2434 * the end of this directory */
2435 if (min_ent == NULL) {
2436 last_ent->lde_reclen = 0;
2437 hash_offset = MDS_DIR_END_OFF;
2441 ent_size = le16_to_cpu(min_ent->lde_reclen);
2443 /* the last entry lde_reclen is 0, but it might not
2444 * the end of this entry of this temporay entry */
2446 ent_size = lu_dirent_calc_size(
2447 le16_to_cpu(min_ent->lde_namelen),
2448 le32_to_cpu(min_ent->lde_attrs));
2449 if (ent_size > left_bytes) {
2450 last_ent->lde_reclen = cpu_to_le16(0);
2451 hash_offset = le64_to_cpu(min_ent->lde_hash);
2455 memcpy(ent, min_ent, ent_size);
2457 /* Replace . with master FID and Replace .. with the parent FID
2458 * of master object */
2459 if (strncmp(ent->lde_name, ".",
2460 le16_to_cpu(ent->lde_namelen)) == 0 &&
2461 le16_to_cpu(ent->lde_namelen) == 1)
2462 fid_cpu_to_le(&ent->lde_fid, &master_fid);
2463 else if (strncmp(ent->lde_name, "..",
2464 le16_to_cpu(ent->lde_namelen)) == 0 &&
2465 le16_to_cpu(ent->lde_namelen) == 2)
2466 fid_cpu_to_le(&ent->lde_fid, &op_data->op_fid3);
2468 left_bytes -= ent_size;
2469 ent->lde_reclen = cpu_to_le16(ent_size);
2471 ent = (void *)ent + ent_size;
2472 hash_offset = le64_to_cpu(min_ent->lde_hash);
2473 if (hash_offset == MDS_DIR_END_OFF) {
2474 last_ent->lde_reclen = 0;
2479 if (min_ent_page != NULL) {
2480 kunmap(min_ent_page);
2481 page_cache_release(min_ent_page);
2484 if (unlikely(rc != 0)) {
2485 __free_page(ent_page);
2489 dp->ldp_flags |= LDF_EMPTY;
2490 dp->ldp_flags = cpu_to_le32(dp->ldp_flags);
2491 dp->ldp_hash_end = cpu_to_le64(hash_offset);
2494 /* We do not want to allocate md_op_data during each
2495 * dir entry reading, so op_data will be shared by every stripe,
2496 * then we need to restore it back to original value before
2497 * return to the upper layer */
2498 op_data->op_fid1 = master_fid;
2499 op_data->op_fid2 = master_fid;
2500 op_data->op_data = master_inode;
2507 int lmv_read_page(struct obd_export *exp, struct md_op_data *op_data,
2508 struct md_callback *cb_op, __u64 offset,
2509 struct page **ppage)
2511 struct obd_device *obd = exp->exp_obd;
2512 struct lmv_obd *lmv = &obd->u.lmv;
2513 struct lmv_stripe_md *lsm = op_data->op_mea1;
2514 struct lmv_tgt_desc *tgt;
2518 rc = lmv_check_connect(obd);
2522 if (unlikely(lsm != NULL)) {
2523 rc = lmv_read_striped_page(exp, op_data, cb_op, offset, ppage);
2527 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2529 RETURN(PTR_ERR(tgt));
2531 rc = md_read_page(tgt->ltd_exp, op_data, cb_op, offset, ppage);
2537 * Unlink a file/directory
2539 * Unlink a file or directory under the parent dir. The unlink request
2540 * usually will be sent to the MDT where the child is located, but if
2541 * the client does not have the child FID then request will be sent to the
2542 * MDT where the parent is located.
2544 * If the parent is a striped directory then it also needs to locate which
2545 * stripe the name of the child is located, and replace the parent FID
2546 * (@op->op_fid1) with the stripe FID. Note: if the stripe is unknown,
2547 * it will walk through all of sub-stripes until the child is being
2550 * \param[in] exp export refer to LMV
2551 * \param[in] op_data different parameters transferred beween client
2552 * MD stacks, name, namelen, FIDs etc.
2553 * op_fid1 is the parent FID, op_fid2 is the child
2555 * \param[out] request point to the request of unlink.
2557 * retval 0 if succeed
2558 * negative errno if failed.
2560 static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data,
2561 struct ptlrpc_request **request)
2563 struct obd_device *obd = exp->exp_obd;
2564 struct lmv_obd *lmv = &obd->u.lmv;
2565 struct lmv_tgt_desc *tgt = NULL;
2566 struct lmv_tgt_desc *parent_tgt = NULL;
2567 struct mdt_body *body;
2569 int stripe_index = 0;
2570 struct lmv_stripe_md *lsm = op_data->op_mea1;
2573 rc = lmv_check_connect(obd);
2577 /* For striped dir, we need to locate the parent as well */
2579 struct lmv_tgt_desc *tmp;
2581 LASSERT(op_data->op_name != NULL &&
2582 op_data->op_namelen != 0);
2584 tmp = lmv_locate_target_for_name(lmv, lsm,
2586 op_data->op_namelen,
2590 /* return -EBADFD means unknown hash type, might
2591 * need try all sub-stripe here */
2592 if (IS_ERR(tmp) && PTR_ERR(tmp) != -EBADFD)
2593 RETURN(PTR_ERR(tmp));
2595 /* Note: both migrating dir and unknown hash dir need to
2596 * try all of sub-stripes, so we need start search the
2597 * name from stripe 0, but migrating dir is already handled
2598 * inside lmv_locate_target_for_name(), so we only check
2599 * unknown hash type directory here */
2600 if (!lmv_is_known_hash_type(lsm->lsm_md_hash_type)) {
2601 struct lmv_oinfo *oinfo;
2603 oinfo = &lsm->lsm_md_oinfo[stripe_index];
2605 op_data->op_fid1 = oinfo->lmo_fid;
2606 op_data->op_mds = oinfo->lmo_mds;
2611 /* Send unlink requests to the MDT where the child is located */
2612 if (likely(!fid_is_zero(&op_data->op_fid2)))
2613 tgt = lmv_find_target(lmv, &op_data->op_fid2);
2614 else if (lsm != NULL)
2615 tgt = lmv_get_target(lmv, op_data->op_mds, NULL);
2617 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
2620 RETURN(PTR_ERR(tgt));
2622 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2623 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2624 op_data->op_cap = cfs_curproc_cap_pack();
2627 * If child's fid is given, cancel unused locks for it if it is from
2628 * another export than parent.
2630 * LOOKUP lock for child (fid3) should also be cancelled on parent
2631 * tgt_tgt in mdc_unlink().
2633 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
2636 * Cancel FULL locks on child (fid3).
2638 parent_tgt = lmv_find_target(lmv, &op_data->op_fid1);
2639 if (IS_ERR(parent_tgt))
2640 RETURN(PTR_ERR(parent_tgt));
2642 if (parent_tgt != tgt) {
2643 rc = lmv_early_cancel(exp, parent_tgt, op_data, tgt->ltd_idx,
2644 LCK_EX, MDS_INODELOCK_LOOKUP,
2645 MF_MDC_CANCEL_FID3);
2648 rc = lmv_early_cancel(exp, NULL, op_data, tgt->ltd_idx, LCK_EX,
2649 MDS_INODELOCK_FULL, MF_MDC_CANCEL_FID3);
2653 CDEBUG(D_INODE, "unlink with fid="DFID"/"DFID" -> mds #%u\n",
2654 PFID(&op_data->op_fid1), PFID(&op_data->op_fid2), tgt->ltd_idx);
2656 rc = md_unlink(tgt->ltd_exp, op_data, request);
2657 if (rc != 0 && rc != -EREMOTE && rc != -ENOENT)
2660 /* Try next stripe if it is needed. */
2661 if (rc == -ENOENT && lsm != NULL && lmv_need_try_all_stripes(lsm)) {
2662 struct lmv_oinfo *oinfo;
2665 if (stripe_index >= lsm->lsm_md_stripe_count)
2668 oinfo = &lsm->lsm_md_oinfo[stripe_index];
2670 op_data->op_fid1 = oinfo->lmo_fid;
2671 op_data->op_mds = oinfo->lmo_mds;
2673 ptlrpc_req_finished(*request);
2676 goto try_next_stripe;
2679 body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
2683 /* Not cross-ref case, just get out of here. */
2684 if (likely(!(body->mbo_valid & OBD_MD_MDS)))
2687 CDEBUG(D_INODE, "%s: try unlink to another MDT for "DFID"\n",
2688 exp->exp_obd->obd_name, PFID(&body->mbo_fid1));
2690 /* This is a remote object, try remote MDT, Note: it may
2691 * try more than 1 time here, Considering following case
2692 * /mnt/lustre is root on MDT0, remote1 is on MDT1
2693 * 1. Initially A does not know where remote1 is, it send
2694 * unlink RPC to MDT0, MDT0 return -EREMOTE, it will
2695 * resend unlink RPC to MDT1 (retry 1st time).
2697 * 2. During the unlink RPC in flight,
2698 * client B mv /mnt/lustre/remote1 /mnt/lustre/remote2
2699 * and create new remote1, but on MDT0
2701 * 3. MDT1 get unlink RPC(from A), then do remote lock on
2702 * /mnt/lustre, then lookup get fid of remote1, and find
2703 * it is remote dir again, and replay -EREMOTE again.
2705 * 4. Then A will resend unlink RPC to MDT0. (retry 2nd times).
2707 * In theory, it might try unlimited time here, but it should
2708 * be very rare case. */
2709 op_data->op_fid2 = body->mbo_fid1;
2710 ptlrpc_req_finished(*request);
2716 static int lmv_precleanup(struct obd_device *obd)
2719 fld_client_proc_fini(&obd->u.lmv.lmv_fld);
2720 lprocfs_obd_cleanup(obd);
2721 lprocfs_free_md_stats(obd);
2726 * Get by key a value associated with a LMV device.
2728 * Dispatch request to lower-layer devices as needed.
2730 * \param[in] env execution environment for this thread
2731 * \param[in] exp export for the LMV device
2732 * \param[in] keylen length of key identifier
2733 * \param[in] key identifier of key to get value for
2734 * \param[in] vallen size of \a val
2735 * \param[out] val pointer to storage location for value
2736 * \param[in] lsm optional striping metadata of object
2738 * \retval 0 on success
2739 * \retval negative negated errno on failure
2741 static int lmv_get_info(const struct lu_env *env, struct obd_export *exp,
2742 __u32 keylen, void *key, __u32 *vallen, void *val)
2744 struct obd_device *obd;
2745 struct lmv_obd *lmv;
2749 obd = class_exp2obd(exp);
2751 CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n",
2752 exp->exp_handle.h_cookie);
2757 if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) {
2760 rc = lmv_check_connect(obd);
2764 LASSERT(*vallen == sizeof(__u32));
2765 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2766 struct lmv_tgt_desc *tgt = lmv->tgts[i];
2768 * All tgts should be connected when this gets called.
2770 if (tgt == NULL || tgt->ltd_exp == NULL)
2773 if (!obd_get_info(env, tgt->ltd_exp, keylen, key,
2778 } else if (KEY_IS(KEY_MAX_EASIZE) ||
2779 KEY_IS(KEY_DEFAULT_EASIZE) ||
2780 KEY_IS(KEY_CONN_DATA)) {
2781 rc = lmv_check_connect(obd);
2786 * Forwarding this request to first MDS, it should know LOV
2789 rc = obd_get_info(env, lmv->tgts[0]->ltd_exp, keylen, key,
2791 if (!rc && KEY_IS(KEY_CONN_DATA))
2792 exp->exp_connect_data = *(struct obd_connect_data *)val;
2794 } else if (KEY_IS(KEY_TGT_COUNT)) {
2795 *((int *)val) = lmv->desc.ld_tgt_count;
2799 CDEBUG(D_IOCTL, "Invalid key\n");
2804 * Asynchronously set by key a value associated with a LMV device.
2806 * Dispatch request to lower-layer devices as needed.
2808 * \param[in] env execution environment for this thread
2809 * \param[in] exp export for the LMV device
2810 * \param[in] keylen length of key identifier
2811 * \param[in] key identifier of key to store value for
2812 * \param[in] vallen size of value to store
2813 * \param[in] val pointer to data to be stored
2814 * \param[in] set optional list of related ptlrpc requests
2816 * \retval 0 on success
2817 * \retval negative negated errno on failure
2819 int lmv_set_info_async(const struct lu_env *env, struct obd_export *exp,
2820 __u32 keylen, void *key, __u32 vallen, void *val,
2821 struct ptlrpc_request_set *set)
2823 struct lmv_tgt_desc *tgt = NULL;
2824 struct obd_device *obd;
2825 struct lmv_obd *lmv;
2829 obd = class_exp2obd(exp);
2831 CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n",
2832 exp->exp_handle.h_cookie);
2837 if (KEY_IS(KEY_READ_ONLY) || KEY_IS(KEY_FLUSH_CTX) ||
2838 KEY_IS(KEY_DEFAULT_EASIZE)) {
2841 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2844 if (tgt == NULL || tgt->ltd_exp == NULL)
2847 err = obd_set_info_async(env, tgt->ltd_exp,
2848 keylen, key, vallen, val, set);
2859 static int lmv_unpack_md_v1(struct obd_export *exp, struct lmv_stripe_md *lsm,
2860 const struct lmv_mds_md_v1 *lmm1)
2862 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2869 lsm->lsm_md_magic = le32_to_cpu(lmm1->lmv_magic);
2870 lsm->lsm_md_stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
2871 lsm->lsm_md_master_mdt_index = le32_to_cpu(lmm1->lmv_master_mdt_index);
2872 if (OBD_FAIL_CHECK(OBD_FAIL_UNKNOWN_LMV_STRIPE))
2873 lsm->lsm_md_hash_type = LMV_HASH_TYPE_UNKNOWN;
2875 lsm->lsm_md_hash_type = le32_to_cpu(lmm1->lmv_hash_type);
2876 lsm->lsm_md_layout_version = le32_to_cpu(lmm1->lmv_layout_version);
2877 cplen = strlcpy(lsm->lsm_md_pool_name, lmm1->lmv_pool_name,
2878 sizeof(lsm->lsm_md_pool_name));
2880 if (cplen >= sizeof(lsm->lsm_md_pool_name))
2883 CDEBUG(D_INFO, "unpack lsm count %d, master %d hash_type %d"
2884 "layout_version %d\n", lsm->lsm_md_stripe_count,
2885 lsm->lsm_md_master_mdt_index, lsm->lsm_md_hash_type,
2886 lsm->lsm_md_layout_version);
2888 stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
2889 for (i = 0; i < stripe_count; i++) {
2890 fid_le_to_cpu(&lsm->lsm_md_oinfo[i].lmo_fid,
2891 &lmm1->lmv_stripe_fids[i]);
2892 rc = lmv_fld_lookup(lmv, &lsm->lsm_md_oinfo[i].lmo_fid,
2893 &lsm->lsm_md_oinfo[i].lmo_mds);
2896 CDEBUG(D_INFO, "unpack fid #%d "DFID"\n", i,
2897 PFID(&lsm->lsm_md_oinfo[i].lmo_fid));
2903 static int lmv_unpackmd(struct obd_export *exp, struct lmv_stripe_md **lsmp,
2904 const union lmv_mds_md *lmm, size_t lmm_size)
2906 struct lmv_stripe_md *lsm;
2909 bool allocated = false;
2912 LASSERT(lsmp != NULL);
2916 if (lsm != NULL && lmm == NULL) {
2918 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
2919 /* For migrating inode, the master stripe and master
2920 * object will be the same, so do not need iput, see
2921 * ll_update_lsm_md */
2922 if (!(lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION &&
2923 i == 0) && lsm->lsm_md_oinfo[i].lmo_root != NULL)
2924 iput(lsm->lsm_md_oinfo[i].lmo_root);
2926 lsm_size = lmv_stripe_md_size(lsm->lsm_md_stripe_count);
2927 OBD_FREE(lsm, lsm_size);
2932 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE)
2936 if (le32_to_cpu(lmm->lmv_magic) != LMV_MAGIC_V1 &&
2937 le32_to_cpu(lmm->lmv_magic) != LMV_USER_MAGIC) {
2938 CERROR("%s: invalid lmv magic %x: rc = %d\n",
2939 exp->exp_obd->obd_name, le32_to_cpu(lmm->lmv_magic),
2944 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_V1)
2945 lsm_size = lmv_stripe_md_size(lmv_mds_md_stripe_count_get(lmm));
2948 * Unpack default dirstripe(lmv_user_md) to lmv_stripe_md,
2949 * stripecount should be 0 then.
2951 lsm_size = lmv_stripe_md_size(0);
2953 lsm_size = lmv_stripe_md_size(lmv_mds_md_stripe_count_get(lmm));
2955 OBD_ALLOC(lsm, lsm_size);
2962 switch (le32_to_cpu(lmm->lmv_magic)) {
2964 rc = lmv_unpack_md_v1(exp, lsm, &lmm->lmv_md_v1);
2967 CERROR("%s: unrecognized magic %x\n", exp->exp_obd->obd_name,
2968 le32_to_cpu(lmm->lmv_magic));
2973 if (rc != 0 && allocated) {
2974 OBD_FREE(lsm, lsm_size);
2981 void lmv_free_memmd(struct lmv_stripe_md *lsm)
2983 lmv_unpackmd(NULL, &lsm, NULL, 0);
2985 EXPORT_SYMBOL(lmv_free_memmd);
2987 static int lmv_cancel_unused(struct obd_export *exp, const struct lu_fid *fid,
2988 union ldlm_policy_data *policy,
2989 enum ldlm_mode mode, enum ldlm_cancel_flags flags,
2992 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2997 LASSERT(fid != NULL);
2999 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
3000 struct lmv_tgt_desc *tgt = lmv->tgts[i];
3003 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
3006 err = md_cancel_unused(tgt->ltd_exp, fid, policy, mode, flags,
3014 int lmv_set_lock_data(struct obd_export *exp, __u64 *lockh, void *data,
3017 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
3018 struct lmv_tgt_desc *tgt = lmv->tgts[0];
3022 if (tgt == NULL || tgt->ltd_exp == NULL)
3024 rc = md_set_lock_data(tgt->ltd_exp, lockh, data, bits);
3028 enum ldlm_mode lmv_lock_match(struct obd_export *exp, __u64 flags,
3029 const struct lu_fid *fid, enum ldlm_type type,
3030 union ldlm_policy_data *policy,
3031 enum ldlm_mode mode, struct lustre_handle *lockh)
3033 struct obd_device *obd = exp->exp_obd;
3034 struct lmv_obd *lmv = &obd->u.lmv;
3040 CDEBUG(D_INODE, "Lock match for "DFID"\n", PFID(fid));
3043 * With DNE every object can have two locks in different namespaces:
3044 * lookup lock in space of MDT storing direntry and update/open lock in
3045 * space of MDT storing inode. Try the MDT that the FID maps to first,
3046 * since this can be easily found, and only try others if that fails.
3048 for (i = 0, tgt = lmv_find_target_index(lmv, fid);
3049 i < lmv->desc.ld_tgt_count;
3050 i++, tgt = (tgt + 1) % lmv->desc.ld_tgt_count) {
3052 CDEBUG(D_HA, "%s: "DFID" is inaccessible: rc = %d\n",
3053 obd->obd_name, PFID(fid), tgt);
3057 if (lmv->tgts[tgt] == NULL ||
3058 lmv->tgts[tgt]->ltd_exp == NULL ||
3059 lmv->tgts[tgt]->ltd_active == 0)
3062 rc = md_lock_match(lmv->tgts[tgt]->ltd_exp, flags, fid,
3063 type, policy, mode, lockh);
3071 int lmv_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
3072 struct obd_export *dt_exp, struct obd_export *md_exp,
3073 struct lustre_md *md)
3075 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
3076 struct lmv_tgt_desc *tgt = lmv->tgts[0];
3078 if (tgt == NULL || tgt->ltd_exp == NULL)
3081 return md_get_lustre_md(lmv->tgts[0]->ltd_exp, req, dt_exp, md_exp, md);
3084 int lmv_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
3086 struct obd_device *obd = exp->exp_obd;
3087 struct lmv_obd *lmv = &obd->u.lmv;
3088 struct lmv_tgt_desc *tgt = lmv->tgts[0];
3091 if (md->lmv != NULL) {
3092 lmv_free_memmd(md->lmv);
3095 if (tgt == NULL || tgt->ltd_exp == NULL)
3097 RETURN(md_free_lustre_md(lmv->tgts[0]->ltd_exp, md));
3100 int lmv_set_open_replay_data(struct obd_export *exp,
3101 struct obd_client_handle *och,
3102 struct lookup_intent *it)
3104 struct obd_device *obd = exp->exp_obd;
3105 struct lmv_obd *lmv = &obd->u.lmv;
3106 struct lmv_tgt_desc *tgt;
3109 tgt = lmv_find_target(lmv, &och->och_fid);
3111 RETURN(PTR_ERR(tgt));
3113 RETURN(md_set_open_replay_data(tgt->ltd_exp, och, it));
3116 int lmv_clear_open_replay_data(struct obd_export *exp,
3117 struct obd_client_handle *och)
3119 struct obd_device *obd = exp->exp_obd;
3120 struct lmv_obd *lmv = &obd->u.lmv;
3121 struct lmv_tgt_desc *tgt;
3124 tgt = lmv_find_target(lmv, &och->och_fid);
3126 RETURN(PTR_ERR(tgt));
3128 RETURN(md_clear_open_replay_data(tgt->ltd_exp, och));
3131 int lmv_intent_getattr_async(struct obd_export *exp,
3132 struct md_enqueue_info *minfo)
3134 struct md_op_data *op_data = &minfo->mi_data;
3135 struct obd_device *obd = exp->exp_obd;
3136 struct lmv_obd *lmv = &obd->u.lmv;
3137 struct lmv_tgt_desc *ptgt = NULL;
3138 struct lmv_tgt_desc *ctgt = NULL;
3142 if (!fid_is_sane(&op_data->op_fid2))
3145 rc = lmv_check_connect(obd);
3149 ptgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
3151 RETURN(PTR_ERR(ptgt));
3153 ctgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
3155 RETURN(PTR_ERR(ctgt));
3158 * if child is on remote MDT, we need 2 async RPCs to fetch both LOOKUP
3159 * lock on parent, and UPDATE lock on child MDT, which makes all
3160 * complicated. Considering remote dir is rare case, and not supporting
3161 * it in statahead won't cause any issue, drop its support for now.
3166 rc = md_intent_getattr_async(ptgt->ltd_exp, minfo);
3170 int lmv_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
3171 struct lu_fid *fid, __u64 *bits)
3173 struct obd_device *obd = exp->exp_obd;
3174 struct lmv_obd *lmv = &obd->u.lmv;
3175 struct lmv_tgt_desc *tgt;
3179 rc = lmv_check_connect(obd);
3183 tgt = lmv_find_target(lmv, fid);
3185 RETURN(PTR_ERR(tgt));
3187 rc = md_revalidate_lock(tgt->ltd_exp, it, fid, bits);
3191 int lmv_get_fid_from_lsm(struct obd_export *exp,
3192 const struct lmv_stripe_md *lsm,
3193 const char *name, int namelen, struct lu_fid *fid)
3195 const struct lmv_oinfo *oinfo;
3197 LASSERT(lsm != NULL);
3198 oinfo = lsm_name_to_stripe_info(lsm, name, namelen);
3200 return PTR_ERR(oinfo);
3202 *fid = oinfo->lmo_fid;
3208 * For lmv, only need to send request to master MDT, and the master MDT will
3209 * process with other slave MDTs. The only exception is Q_GETOQUOTA for which
3210 * we directly fetch data from the slave MDTs.
3212 int lmv_quotactl(struct obd_device *unused, struct obd_export *exp,
3213 struct obd_quotactl *oqctl)
3215 struct obd_device *obd = class_exp2obd(exp);
3216 struct lmv_obd *lmv = &obd->u.lmv;
3217 struct lmv_tgt_desc *tgt = lmv->tgts[0];
3220 __u64 curspace, curinodes;
3224 tgt->ltd_exp == NULL ||
3226 lmv->desc.ld_tgt_count == 0) {
3227 CERROR("master lmv inactive\n");
3231 if (oqctl->qc_cmd != Q_GETOQUOTA) {
3232 rc = obd_quotactl(tgt->ltd_exp, oqctl);
3236 curspace = curinodes = 0;
3237 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
3241 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
3244 err = obd_quotactl(tgt->ltd_exp, oqctl);
3246 CERROR("getquota on mdt %d failed. %d\n", i, err);
3250 curspace += oqctl->qc_dqblk.dqb_curspace;
3251 curinodes += oqctl->qc_dqblk.dqb_curinodes;
3254 oqctl->qc_dqblk.dqb_curspace = curspace;
3255 oqctl->qc_dqblk.dqb_curinodes = curinodes;
3260 static int lmv_merge_attr(struct obd_export *exp,
3261 const struct lmv_stripe_md *lsm,
3262 struct cl_attr *attr,
3263 ldlm_blocking_callback cb_blocking)
3268 rc = lmv_revalidate_slaves(exp, lsm, cb_blocking, 0);
3272 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
3273 struct inode *inode = lsm->lsm_md_oinfo[i].lmo_root;
3275 CDEBUG(D_INFO, ""DFID" size %llu, blocks %llu nlink %u,"
3276 " atime %lu ctime %lu, mtime %lu.\n",
3277 PFID(&lsm->lsm_md_oinfo[i].lmo_fid),
3278 i_size_read(inode), (unsigned long long)inode->i_blocks,
3279 inode->i_nlink, LTIME_S(inode->i_atime),
3280 LTIME_S(inode->i_ctime), LTIME_S(inode->i_mtime));
3282 /* for slave stripe, it needs to subtract nlink for . and .. */
3284 attr->cat_nlink += inode->i_nlink - 2;
3286 attr->cat_nlink = inode->i_nlink;
3288 attr->cat_size += i_size_read(inode);
3289 attr->cat_blocks += inode->i_blocks;
3291 if (attr->cat_atime < LTIME_S(inode->i_atime))
3292 attr->cat_atime = LTIME_S(inode->i_atime);
3294 if (attr->cat_ctime < LTIME_S(inode->i_ctime))
3295 attr->cat_ctime = LTIME_S(inode->i_ctime);
3297 if (attr->cat_mtime < LTIME_S(inode->i_mtime))
3298 attr->cat_mtime = LTIME_S(inode->i_mtime);
3303 struct obd_ops lmv_obd_ops = {
3304 .o_owner = THIS_MODULE,
3305 .o_setup = lmv_setup,
3306 .o_cleanup = lmv_cleanup,
3307 .o_precleanup = lmv_precleanup,
3308 .o_process_config = lmv_process_config,
3309 .o_connect = lmv_connect,
3310 .o_disconnect = lmv_disconnect,
3311 .o_statfs = lmv_statfs,
3312 .o_get_info = lmv_get_info,
3313 .o_set_info_async = lmv_set_info_async,
3314 .o_notify = lmv_notify,
3315 .o_get_uuid = lmv_get_uuid,
3316 .o_iocontrol = lmv_iocontrol,
3317 .o_quotactl = lmv_quotactl
3320 struct md_ops lmv_md_ops = {
3321 .m_get_root = lmv_get_root,
3322 .m_null_inode = lmv_null_inode,
3323 .m_close = lmv_close,
3324 .m_create = lmv_create,
3325 .m_enqueue = lmv_enqueue,
3326 .m_getattr = lmv_getattr,
3327 .m_getxattr = lmv_getxattr,
3328 .m_getattr_name = lmv_getattr_name,
3329 .m_intent_lock = lmv_intent_lock,
3331 .m_rename = lmv_rename,
3332 .m_setattr = lmv_setattr,
3333 .m_setxattr = lmv_setxattr,
3334 .m_fsync = lmv_fsync,
3335 .m_read_page = lmv_read_page,
3336 .m_unlink = lmv_unlink,
3337 .m_init_ea_size = lmv_init_ea_size,
3338 .m_cancel_unused = lmv_cancel_unused,
3339 .m_set_lock_data = lmv_set_lock_data,
3340 .m_lock_match = lmv_lock_match,
3341 .m_get_lustre_md = lmv_get_lustre_md,
3342 .m_free_lustre_md = lmv_free_lustre_md,
3343 .m_merge_attr = lmv_merge_attr,
3344 .m_set_open_replay_data = lmv_set_open_replay_data,
3345 .m_clear_open_replay_data = lmv_clear_open_replay_data,
3346 .m_intent_getattr_async = lmv_intent_getattr_async,
3347 .m_revalidate_lock = lmv_revalidate_lock,
3348 .m_get_fid_from_lsm = lmv_get_fid_from_lsm,
3349 .m_unpackmd = lmv_unpackmd,
3352 static int __init lmv_init(void)
3354 return class_register_type(&lmv_obd_ops, &lmv_md_ops, true, NULL,
3355 LUSTRE_LMV_NAME, NULL);
3358 static void __exit lmv_exit(void)
3360 class_unregister_type(LUSTRE_LMV_NAME);
3363 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
3364 MODULE_DESCRIPTION("Lustre Logical Metadata Volume");
3365 MODULE_VERSION(LUSTRE_VERSION_STRING);
3366 MODULE_LICENSE("GPL");
3368 module_init(lmv_init);
3369 module_exit(lmv_exit);