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 * This is _inode_ placement policy function (not name).
1196 static int lmv_placement_policy(struct obd_device *obd,
1197 struct md_op_data *op_data, u32 *mds)
1199 struct lmv_obd *lmv = &obd->u.lmv;
1202 LASSERT(mds != NULL);
1204 if (lmv->desc.ld_tgt_count == 1) {
1209 if (op_data->op_default_stripe_offset != -1) {
1210 *mds = op_data->op_default_stripe_offset;
1215 * If stripe_offset is provided during setdirstripe
1216 * (setdirstripe -i xx), xx MDS will be choosen.
1218 if (op_data->op_cli_flags & CLI_SET_MEA && op_data->op_data != NULL) {
1219 struct lmv_user_md *lum;
1221 lum = op_data->op_data;
1223 if (le32_to_cpu(lum->lum_stripe_offset) != (__u32)-1) {
1224 *mds = le32_to_cpu(lum->lum_stripe_offset);
1226 /* -1 means default, which will be in the same MDT with
1228 *mds = op_data->op_mds;
1229 lum->lum_stripe_offset = cpu_to_le32(op_data->op_mds);
1232 /* Allocate new fid on target according to operation type and
1233 * parent home mds. */
1234 *mds = op_data->op_mds;
1240 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds)
1242 struct lmv_tgt_desc *tgt;
1246 tgt = lmv_get_target(lmv, mds, NULL);
1248 RETURN(PTR_ERR(tgt));
1251 * New seq alloc and FLD setup should be atomic. Otherwise we may find
1252 * on server that seq in new allocated fid is not yet known.
1254 mutex_lock(&tgt->ltd_fid_mutex);
1256 if (tgt->ltd_active == 0 || tgt->ltd_exp == NULL)
1257 GOTO(out, rc = -ENODEV);
1260 * Asking underlying tgt layer to allocate new fid.
1262 rc = obd_fid_alloc(NULL, tgt->ltd_exp, fid, NULL);
1264 LASSERT(fid_is_sane(fid));
1270 mutex_unlock(&tgt->ltd_fid_mutex);
1274 int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp,
1275 struct lu_fid *fid, struct md_op_data *op_data)
1277 struct obd_device *obd = class_exp2obd(exp);
1278 struct lmv_obd *lmv = &obd->u.lmv;
1283 LASSERT(op_data != NULL);
1284 LASSERT(fid != NULL);
1286 rc = lmv_placement_policy(obd, op_data, &mds);
1288 CERROR("Can't get target for allocating fid, "
1293 rc = __lmv_fid_alloc(lmv, fid, mds);
1295 CERROR("Can't alloc new fid, rc %d\n", rc);
1302 static int lmv_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
1304 struct lmv_obd *lmv = &obd->u.lmv;
1305 struct lmv_desc *desc;
1309 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
1310 CERROR("LMV setup requires a descriptor\n");
1314 desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1);
1315 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
1316 CERROR("Lmv descriptor size wrong: %d > %d\n",
1317 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
1321 lmv->tgts_size = 32U;
1322 OBD_ALLOC(lmv->tgts, sizeof(*lmv->tgts) * lmv->tgts_size);
1323 if (lmv->tgts == NULL)
1326 obd_str2uuid(&lmv->desc.ld_uuid, desc->ld_uuid.uuid);
1327 lmv->desc.ld_tgt_count = 0;
1328 lmv->desc.ld_active_tgt_count = 0;
1329 lmv->max_def_easize = 0;
1330 lmv->max_easize = 0;
1332 spin_lock_init(&lmv->lmv_lock);
1333 mutex_init(&lmv->lmv_init_mutex);
1335 #ifdef CONFIG_PROC_FS
1336 obd->obd_vars = lprocfs_lmv_obd_vars;
1337 lprocfs_obd_setup(obd);
1338 lprocfs_alloc_md_stats(obd, 0);
1339 rc = lprocfs_seq_create(obd->obd_proc_entry, "target_obd",
1340 0444, &lmv_proc_target_fops, obd);
1342 CWARN("%s: error adding LMV target_obd file: rc = %d\n",
1345 rc = fld_client_init(&lmv->lmv_fld, obd->obd_name,
1346 LUSTRE_CLI_FLD_HASH_DHT);
1348 CERROR("Can't init FLD, err %d\n", rc);
1358 static int lmv_cleanup(struct obd_device *obd)
1360 struct lmv_obd *lmv = &obd->u.lmv;
1363 fld_client_fini(&lmv->lmv_fld);
1364 if (lmv->tgts != NULL) {
1366 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1367 if (lmv->tgts[i] == NULL)
1369 lmv_del_target(lmv, i);
1371 OBD_FREE(lmv->tgts, sizeof(*lmv->tgts) * lmv->tgts_size);
1377 static int lmv_process_config(struct obd_device *obd, size_t len, void *buf)
1379 struct lustre_cfg *lcfg = buf;
1380 struct obd_uuid obd_uuid;
1386 switch (lcfg->lcfg_command) {
1388 /* modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDT0000_UUID
1389 * 2:0 3:1 4:lustre-MDT0000-mdc_UUID */
1390 if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid))
1391 GOTO(out, rc = -EINVAL);
1393 obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1));
1395 if (sscanf(lustre_cfg_buf(lcfg, 2), "%u", &index) != 1)
1396 GOTO(out, rc = -EINVAL);
1397 if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", &gen) != 1)
1398 GOTO(out, rc = -EINVAL);
1399 rc = lmv_add_target(obd, &obd_uuid, index, gen);
1402 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1403 GOTO(out, rc = -EINVAL);
1409 static int lmv_statfs(const struct lu_env *env, struct obd_export *exp,
1410 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
1412 struct obd_device *obd = class_exp2obd(exp);
1413 struct lmv_obd *lmv = &obd->u.lmv;
1414 struct obd_statfs *temp;
1419 rc = lmv_check_connect(obd);
1423 OBD_ALLOC(temp, sizeof(*temp));
1427 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1428 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1431 rc = obd_statfs(env, lmv->tgts[i]->ltd_exp, temp,
1434 CERROR("can't stat MDS #%d (%s), error %d\n", i,
1435 lmv->tgts[i]->ltd_exp->exp_obd->obd_name,
1437 GOTO(out_free_temp, rc);
1442 /* If the statfs is from mount, it will needs
1443 * retrieve necessary information from MDT0.
1444 * i.e. mount does not need the merged osfs
1446 * And also clients can be mounted as long as
1447 * MDT0 is in service*/
1448 if (flags & OBD_STATFS_FOR_MDT0)
1449 GOTO(out_free_temp, rc);
1451 osfs->os_bavail += temp->os_bavail;
1452 osfs->os_blocks += temp->os_blocks;
1453 osfs->os_ffree += temp->os_ffree;
1454 osfs->os_files += temp->os_files;
1460 OBD_FREE(temp, sizeof(*temp));
1464 static int lmv_get_root(struct obd_export *exp, const char *fileset,
1467 struct obd_device *obd = exp->exp_obd;
1468 struct lmv_obd *lmv = &obd->u.lmv;
1472 rc = lmv_check_connect(obd);
1476 rc = md_get_root(lmv->tgts[0]->ltd_exp, fileset, fid);
1480 static int lmv_getxattr(struct obd_export *exp, const struct lu_fid *fid,
1481 u64 valid, const char *name,
1482 const char *input, int input_size, int output_size,
1483 int flags, struct ptlrpc_request **request)
1485 struct obd_device *obd = exp->exp_obd;
1486 struct lmv_obd *lmv = &obd->u.lmv;
1487 struct lmv_tgt_desc *tgt;
1491 rc = lmv_check_connect(obd);
1495 tgt = lmv_find_target(lmv, fid);
1497 RETURN(PTR_ERR(tgt));
1499 rc = md_getxattr(tgt->ltd_exp, fid, valid, name, input,
1500 input_size, output_size, flags, request);
1505 static int lmv_setxattr(struct obd_export *exp, const struct lu_fid *fid,
1506 u64 valid, const char *name,
1507 const char *input, int input_size, int output_size,
1508 int flags, __u32 suppgid,
1509 struct ptlrpc_request **request)
1511 struct obd_device *obd = exp->exp_obd;
1512 struct lmv_obd *lmv = &obd->u.lmv;
1513 struct lmv_tgt_desc *tgt;
1517 rc = lmv_check_connect(obd);
1521 tgt = lmv_find_target(lmv, fid);
1523 RETURN(PTR_ERR(tgt));
1525 rc = md_setxattr(tgt->ltd_exp, fid, valid, name, input,
1526 input_size, output_size, flags, suppgid,
1532 static int lmv_getattr(struct obd_export *exp, struct md_op_data *op_data,
1533 struct ptlrpc_request **request)
1535 struct obd_device *obd = exp->exp_obd;
1536 struct lmv_obd *lmv = &obd->u.lmv;
1537 struct lmv_tgt_desc *tgt;
1541 rc = lmv_check_connect(obd);
1545 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1547 RETURN(PTR_ERR(tgt));
1549 if (op_data->op_flags & MF_GET_MDT_IDX) {
1550 op_data->op_mds = tgt->ltd_idx;
1554 rc = md_getattr(tgt->ltd_exp, op_data, request);
1559 static int lmv_null_inode(struct obd_export *exp, const struct lu_fid *fid)
1561 struct obd_device *obd = exp->exp_obd;
1562 struct lmv_obd *lmv = &obd->u.lmv;
1567 rc = lmv_check_connect(obd);
1571 CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid));
1574 * With DNE every object can have two locks in different namespaces:
1575 * lookup lock in space of MDT storing direntry and update/open lock in
1576 * space of MDT storing inode.
1578 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1579 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1581 md_null_inode(lmv->tgts[i]->ltd_exp, fid);
1587 static int lmv_close(struct obd_export *exp, struct md_op_data *op_data,
1588 struct md_open_data *mod, struct ptlrpc_request **request)
1590 struct obd_device *obd = exp->exp_obd;
1591 struct lmv_obd *lmv = &obd->u.lmv;
1592 struct lmv_tgt_desc *tgt;
1596 rc = lmv_check_connect(obd);
1600 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1602 RETURN(PTR_ERR(tgt));
1604 CDEBUG(D_INODE, "CLOSE "DFID"\n", PFID(&op_data->op_fid1));
1605 rc = md_close(tgt->ltd_exp, op_data, mod, request);
1610 * Choosing the MDT by name or FID in @op_data.
1611 * For non-striped directory, it will locate MDT by fid.
1612 * For striped-directory, it will locate MDT by name. And also
1613 * it will reset op_fid1 with the FID of the choosen stripe.
1615 struct lmv_tgt_desc *
1616 lmv_locate_target_for_name(struct lmv_obd *lmv, struct lmv_stripe_md *lsm,
1617 const char *name, int namelen, struct lu_fid *fid,
1620 struct lmv_tgt_desc *tgt;
1621 const struct lmv_oinfo *oinfo;
1623 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_NAME_HASH)) {
1624 if (cfs_fail_val >= lsm->lsm_md_stripe_count)
1625 RETURN(ERR_PTR(-EBADF));
1626 oinfo = &lsm->lsm_md_oinfo[cfs_fail_val];
1628 oinfo = lsm_name_to_stripe_info(lsm, name, namelen);
1630 RETURN(ERR_CAST(oinfo));
1634 *fid = oinfo->lmo_fid;
1636 *mds = oinfo->lmo_mds;
1638 tgt = lmv_get_target(lmv, oinfo->lmo_mds, NULL);
1640 CDEBUG(D_INFO, "locate on mds %u "DFID"\n", oinfo->lmo_mds,
1641 PFID(&oinfo->lmo_fid));
1646 * Locate mds by fid or name
1648 * For striped directory (lsm != NULL), it will locate the stripe
1649 * by name hash (see lsm_name_to_stripe_info()). Note: if the hash_type
1650 * is unknown, it will return -EBADFD, and lmv_intent_lookup might need
1651 * walk through all of stripes to locate the entry.
1653 * For normal direcotry, it will locate MDS by FID directly.
1654 * \param[in] lmv LMV device
1655 * \param[in] op_data client MD stack parameters, name, namelen
1657 * \param[in] fid object FID used to locate MDS.
1659 * retval pointer to the lmv_tgt_desc if succeed.
1660 * ERR_PTR(errno) if failed.
1662 struct lmv_tgt_desc*
1663 lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
1666 struct lmv_stripe_md *lsm = op_data->op_mea1;
1667 struct lmv_tgt_desc *tgt;
1669 /* During creating VOLATILE file, it should honor the mdt
1670 * index if the file under striped dir is being restored, see
1672 if (op_data->op_bias & MDS_CREATE_VOLATILE &&
1673 (int)op_data->op_mds != -1) {
1675 tgt = lmv_get_target(lmv, op_data->op_mds, NULL);
1680 /* refill the right parent fid */
1681 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1682 struct lmv_oinfo *oinfo;
1684 oinfo = &lsm->lsm_md_oinfo[i];
1685 if (oinfo->lmo_mds == op_data->op_mds) {
1686 *fid = oinfo->lmo_fid;
1691 if (i == lsm->lsm_md_stripe_count)
1692 *fid = lsm->lsm_md_oinfo[0].lmo_fid;
1698 if (lsm == NULL || op_data->op_namelen == 0) {
1699 tgt = lmv_find_target(lmv, fid);
1703 op_data->op_mds = tgt->ltd_idx;
1707 return lmv_locate_target_for_name(lmv, lsm, op_data->op_name,
1708 op_data->op_namelen, fid,
1712 int lmv_create(struct obd_export *exp, struct md_op_data *op_data,
1713 const void *data, size_t datalen, umode_t mode, uid_t uid,
1714 gid_t gid, cfs_cap_t cap_effective, __u64 rdev,
1715 struct ptlrpc_request **request)
1717 struct obd_device *obd = exp->exp_obd;
1718 struct lmv_obd *lmv = &obd->u.lmv;
1719 struct lmv_tgt_desc *tgt;
1723 rc = lmv_check_connect(obd);
1727 if (!lmv->desc.ld_active_tgt_count)
1730 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1732 RETURN(PTR_ERR(tgt));
1734 CDEBUG(D_INODE, "CREATE name '%.*s' on "DFID" -> mds #%x\n",
1735 (int)op_data->op_namelen, op_data->op_name,
1736 PFID(&op_data->op_fid1), op_data->op_mds);
1738 rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
1741 if (exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE) {
1742 /* Send the create request to the MDT where the object
1743 * will be located */
1744 tgt = lmv_find_target(lmv, &op_data->op_fid2);
1746 RETURN(PTR_ERR(tgt));
1748 op_data->op_mds = tgt->ltd_idx;
1750 CDEBUG(D_CONFIG, "Server doesn't support striped dirs\n");
1753 CDEBUG(D_INODE, "CREATE obj "DFID" -> mds #%x\n",
1754 PFID(&op_data->op_fid2), op_data->op_mds);
1756 op_data->op_flags |= MF_MDC_CANCEL_FID1;
1757 rc = md_create(tgt->ltd_exp, op_data, data, datalen, mode, uid, gid,
1758 cap_effective, rdev, request);
1760 if (*request == NULL)
1762 CDEBUG(D_INODE, "Created - "DFID"\n", PFID(&op_data->op_fid2));
1768 lmv_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
1769 const union ldlm_policy_data *policy,
1770 struct lookup_intent *it, struct md_op_data *op_data,
1771 struct lustre_handle *lockh, __u64 extra_lock_flags)
1773 struct obd_device *obd = exp->exp_obd;
1774 struct lmv_obd *lmv = &obd->u.lmv;
1775 struct lmv_tgt_desc *tgt;
1779 rc = lmv_check_connect(obd);
1783 CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID"\n",
1784 LL_IT2STR(it), PFID(&op_data->op_fid1));
1786 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1788 RETURN(PTR_ERR(tgt));
1790 CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID" -> mds #%u\n",
1791 LL_IT2STR(it), PFID(&op_data->op_fid1), tgt->ltd_idx);
1793 rc = md_enqueue(tgt->ltd_exp, einfo, policy, it, op_data, lockh,
1800 lmv_getattr_name(struct obd_export *exp,struct md_op_data *op_data,
1801 struct ptlrpc_request **preq)
1803 struct ptlrpc_request *req = NULL;
1804 struct obd_device *obd = exp->exp_obd;
1805 struct lmv_obd *lmv = &obd->u.lmv;
1806 struct lmv_tgt_desc *tgt;
1807 struct mdt_body *body;
1811 rc = lmv_check_connect(obd);
1815 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1817 RETURN(PTR_ERR(tgt));
1819 CDEBUG(D_INODE, "GETATTR_NAME for %*s on "DFID" -> mds #%d\n",
1820 (int)op_data->op_namelen, op_data->op_name,
1821 PFID(&op_data->op_fid1), tgt->ltd_idx);
1823 rc = md_getattr_name(tgt->ltd_exp, op_data, preq);
1827 body = req_capsule_server_get(&(*preq)->rq_pill, &RMF_MDT_BODY);
1828 LASSERT(body != NULL);
1830 if (body->mbo_valid & OBD_MD_MDS) {
1831 struct lu_fid rid = body->mbo_fid1;
1832 CDEBUG(D_INODE, "Request attrs for "DFID"\n",
1835 tgt = lmv_find_target(lmv, &rid);
1837 ptlrpc_req_finished(*preq);
1839 RETURN(PTR_ERR(tgt));
1842 op_data->op_fid1 = rid;
1843 op_data->op_valid |= OBD_MD_FLCROSSREF;
1844 op_data->op_namelen = 0;
1845 op_data->op_name = NULL;
1846 rc = md_getattr_name(tgt->ltd_exp, op_data, &req);
1847 ptlrpc_req_finished(*preq);
1854 #define md_op_data_fid(op_data, fl) \
1855 (fl == MF_MDC_CANCEL_FID1 ? &op_data->op_fid1 : \
1856 fl == MF_MDC_CANCEL_FID2 ? &op_data->op_fid2 : \
1857 fl == MF_MDC_CANCEL_FID3 ? &op_data->op_fid3 : \
1858 fl == MF_MDC_CANCEL_FID4 ? &op_data->op_fid4 : \
1861 static int lmv_early_cancel(struct obd_export *exp, struct lmv_tgt_desc *tgt,
1862 struct md_op_data *op_data, __u32 op_tgt,
1863 enum ldlm_mode mode, int bits, int flag)
1865 struct lu_fid *fid = md_op_data_fid(op_data, flag);
1866 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
1867 union ldlm_policy_data policy = { { 0 } };
1871 if (!fid_is_sane(fid))
1875 tgt = lmv_find_target(lmv, fid);
1877 RETURN(PTR_ERR(tgt));
1880 if (tgt->ltd_idx != op_tgt) {
1881 CDEBUG(D_INODE, "EARLY_CANCEL on "DFID"\n", PFID(fid));
1882 policy.l_inodebits.bits = bits;
1883 rc = md_cancel_unused(tgt->ltd_exp, fid, &policy,
1884 mode, LCF_ASYNC, NULL);
1887 "EARLY_CANCEL skip operation target %d on "DFID"\n",
1889 op_data->op_flags |= flag;
1897 * llite passes fid of an target inode in op_data->op_fid1 and id of directory in
1900 static int lmv_link(struct obd_export *exp, struct md_op_data *op_data,
1901 struct ptlrpc_request **request)
1903 struct obd_device *obd = exp->exp_obd;
1904 struct lmv_obd *lmv = &obd->u.lmv;
1905 struct lmv_tgt_desc *tgt;
1909 rc = lmv_check_connect(obd);
1913 LASSERT(op_data->op_namelen != 0);
1915 CDEBUG(D_INODE, "LINK "DFID":%*s to "DFID"\n",
1916 PFID(&op_data->op_fid2), (int)op_data->op_namelen,
1917 op_data->op_name, PFID(&op_data->op_fid1));
1919 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
1920 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
1921 op_data->op_cap = cfs_curproc_cap_pack();
1922 if (op_data->op_mea2 != NULL) {
1923 struct lmv_stripe_md *lsm = op_data->op_mea2;
1924 const struct lmv_oinfo *oinfo;
1926 oinfo = lsm_name_to_stripe_info(lsm, op_data->op_name,
1927 op_data->op_namelen);
1929 RETURN(PTR_ERR(oinfo));
1931 op_data->op_fid2 = oinfo->lmo_fid;
1934 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
1936 RETURN(PTR_ERR(tgt));
1939 * Cancel UPDATE lock on child (fid1).
1941 op_data->op_flags |= MF_MDC_CANCEL_FID2;
1942 rc = lmv_early_cancel(exp, NULL, op_data, tgt->ltd_idx, LCK_EX,
1943 MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1);
1947 rc = md_link(tgt->ltd_exp, op_data, request);
1952 static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data,
1953 const char *old, size_t oldlen,
1954 const char *new, size_t newlen,
1955 struct ptlrpc_request **request)
1957 struct obd_device *obd = exp->exp_obd;
1958 struct lmv_obd *lmv = &obd->u.lmv;
1959 struct lmv_tgt_desc *src_tgt;
1960 struct lmv_tgt_desc *tgt_tgt;
1961 struct obd_export *target_exp;
1962 struct mdt_body *body;
1966 LASSERT(oldlen != 0);
1968 CDEBUG(D_INODE, "RENAME %.*s in "DFID":%d to %.*s in "DFID":%d\n",
1969 (int)oldlen, old, PFID(&op_data->op_fid1),
1970 op_data->op_mea1 ? op_data->op_mea1->lsm_md_stripe_count : 0,
1971 (int)newlen, new, PFID(&op_data->op_fid2),
1972 op_data->op_mea2 ? op_data->op_mea2->lsm_md_stripe_count : 0);
1974 rc = lmv_check_connect(obd);
1978 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
1979 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
1980 op_data->op_cap = cfs_curproc_cap_pack();
1981 if (op_data->op_cli_flags & CLI_MIGRATE) {
1982 LASSERTF(fid_is_sane(&op_data->op_fid3), "invalid FID "DFID"\n",
1983 PFID(&op_data->op_fid3));
1985 if (op_data->op_mea1 != NULL) {
1986 struct lmv_stripe_md *lsm = op_data->op_mea1;
1987 struct lmv_tgt_desc *tmp;
1989 /* Fix the parent fid for striped dir */
1990 tmp = lmv_locate_target_for_name(lmv, lsm, old,
1995 RETURN(PTR_ERR(tmp));
1998 rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
2002 src_tgt = lmv_find_target(lmv, &op_data->op_fid3);
2003 if (IS_ERR(src_tgt))
2004 RETURN(PTR_ERR(src_tgt));
2006 target_exp = src_tgt->ltd_exp;
2008 if (op_data->op_mea1 != NULL) {
2009 struct lmv_stripe_md *lsm = op_data->op_mea1;
2011 src_tgt = lmv_locate_target_for_name(lmv, lsm, old,
2016 src_tgt = lmv_find_target(lmv, &op_data->op_fid1);
2018 if (IS_ERR(src_tgt))
2019 RETURN(PTR_ERR(src_tgt));
2022 if (op_data->op_mea2 != NULL) {
2023 struct lmv_stripe_md *lsm = op_data->op_mea2;
2025 tgt_tgt = lmv_locate_target_for_name(lmv, lsm, new,
2030 tgt_tgt = lmv_find_target(lmv, &op_data->op_fid2);
2033 if (IS_ERR(tgt_tgt))
2034 RETURN(PTR_ERR(tgt_tgt));
2036 target_exp = tgt_tgt->ltd_exp;
2040 * LOOKUP lock on src child (fid3) should also be cancelled for
2041 * src_tgt in mdc_rename.
2043 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
2046 * Cancel UPDATE locks on tgt parent (fid2), tgt_tgt is its
2049 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
2050 LCK_EX, MDS_INODELOCK_UPDATE,
2051 MF_MDC_CANCEL_FID2);
2056 * Cancel LOOKUP locks on source child (fid3) for parent tgt_tgt.
2058 if (fid_is_sane(&op_data->op_fid3)) {
2059 struct lmv_tgt_desc *tgt;
2061 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2063 RETURN(PTR_ERR(tgt));
2065 /* Cancel LOOKUP lock on its parent */
2066 rc = lmv_early_cancel(exp, tgt, op_data, src_tgt->ltd_idx,
2067 LCK_EX, MDS_INODELOCK_LOOKUP,
2068 MF_MDC_CANCEL_FID3);
2072 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
2073 LCK_EX, MDS_INODELOCK_FULL,
2074 MF_MDC_CANCEL_FID3);
2081 * Cancel all the locks on tgt child (fid4).
2083 if (fid_is_sane(&op_data->op_fid4)) {
2084 struct lmv_tgt_desc *tgt;
2086 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
2087 LCK_EX, MDS_INODELOCK_FULL,
2088 MF_MDC_CANCEL_FID4);
2092 tgt = lmv_find_target(lmv, &op_data->op_fid4);
2094 RETURN(PTR_ERR(tgt));
2096 /* Since the target child might be destroyed, and it might
2097 * become orphan, and we can only check orphan on the local
2098 * MDT right now, so we send rename request to the MDT where
2099 * target child is located. If target child does not exist,
2100 * then it will send the request to the target parent */
2101 target_exp = tgt->ltd_exp;
2104 rc = md_rename(target_exp, op_data, old, oldlen, new, newlen,
2107 if (rc != 0 && rc != -EXDEV)
2110 body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
2114 /* Not cross-ref case, just get out of here. */
2115 if (likely(!(body->mbo_valid & OBD_MD_MDS)))
2118 CDEBUG(D_INODE, "%s: try rename to another MDT for "DFID"\n",
2119 exp->exp_obd->obd_name, PFID(&body->mbo_fid1));
2121 op_data->op_fid4 = body->mbo_fid1;
2122 ptlrpc_req_finished(*request);
2127 static int lmv_setattr(struct obd_export *exp, struct md_op_data *op_data,
2128 void *ea, size_t ealen, struct ptlrpc_request **request)
2130 struct obd_device *obd = exp->exp_obd;
2131 struct lmv_obd *lmv = &obd->u.lmv;
2132 struct lmv_tgt_desc *tgt;
2136 rc = lmv_check_connect(obd);
2140 CDEBUG(D_INODE, "SETATTR for "DFID", valid 0x%x\n",
2141 PFID(&op_data->op_fid1), op_data->op_attr.ia_valid);
2143 op_data->op_flags |= MF_MDC_CANCEL_FID1;
2144 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2146 RETURN(PTR_ERR(tgt));
2148 rc = md_setattr(tgt->ltd_exp, op_data, ea, ealen, request);
2153 static int lmv_fsync(struct obd_export *exp, const struct lu_fid *fid,
2154 struct ptlrpc_request **request)
2156 struct obd_device *obd = exp->exp_obd;
2157 struct lmv_obd *lmv = &obd->u.lmv;
2158 struct lmv_tgt_desc *tgt;
2162 rc = lmv_check_connect(obd);
2166 tgt = lmv_find_target(lmv, fid);
2168 RETURN(PTR_ERR(tgt));
2170 rc = md_fsync(tgt->ltd_exp, fid, request);
2175 * Get current minimum entry from striped directory
2177 * This function will search the dir entry, whose hash value is the
2178 * closest(>=) to @hash_offset, from all of sub-stripes, and it is
2179 * only being called for striped directory.
2181 * \param[in] exp export of LMV
2182 * \param[in] op_data parameters transferred beween client MD stack
2183 * stripe_information will be included in this
2185 * \param[in] cb_op ldlm callback being used in enqueue in
2187 * \param[in] hash_offset the hash value, which is used to locate
2188 * minum(closet) dir entry
2189 * \param[in|out] stripe_offset the caller use this to indicate the stripe
2190 * index of last entry, so to avoid hash conflict
2191 * between stripes. It will also be used to
2192 * return the stripe index of current dir entry.
2193 * \param[in|out] entp the minum entry and it also is being used
2194 * to input the last dir entry to resolve the
2197 * \param[out] ppage the page which holds the minum entry
2199 * \retval = 0 get the entry successfully
2200 * negative errno (< 0) does not get the entry
2202 static int lmv_get_min_striped_entry(struct obd_export *exp,
2203 struct md_op_data *op_data,
2204 struct md_callback *cb_op,
2205 __u64 hash_offset, int *stripe_offset,
2206 struct lu_dirent **entp,
2207 struct page **ppage)
2209 struct obd_device *obd = exp->exp_obd;
2210 struct lmv_obd *lmv = &obd->u.lmv;
2211 struct lmv_stripe_md *lsm = op_data->op_mea1;
2212 struct lmv_tgt_desc *tgt;
2214 struct lu_dirent *min_ent = NULL;
2215 struct page *min_page = NULL;
2221 stripe_count = lsm->lsm_md_stripe_count;
2222 for (i = 0; i < stripe_count; i++) {
2223 struct lu_dirent *ent = NULL;
2224 struct page *page = NULL;
2225 struct lu_dirpage *dp;
2226 __u64 stripe_hash = hash_offset;
2228 tgt = lmv_get_target(lmv, lsm->lsm_md_oinfo[i].lmo_mds, NULL);
2230 GOTO(out, rc = PTR_ERR(tgt));
2232 /* op_data will be shared by each stripe, so we need
2233 * reset these value for each stripe */
2234 op_data->op_fid1 = lsm->lsm_md_oinfo[i].lmo_fid;
2235 op_data->op_fid2 = lsm->lsm_md_oinfo[i].lmo_fid;
2236 op_data->op_data = lsm->lsm_md_oinfo[i].lmo_root;
2238 rc = md_read_page(tgt->ltd_exp, op_data, cb_op, stripe_hash,
2243 dp = page_address(page);
2244 for (ent = lu_dirent_start(dp); ent != NULL;
2245 ent = lu_dirent_next(ent)) {
2246 /* Skip dummy entry */
2247 if (le16_to_cpu(ent->lde_namelen) == 0)
2250 if (le64_to_cpu(ent->lde_hash) < hash_offset)
2253 if (le64_to_cpu(ent->lde_hash) == hash_offset &&
2254 (*entp == ent || i < *stripe_offset))
2257 /* skip . and .. for other stripes */
2259 (strncmp(ent->lde_name, ".",
2260 le16_to_cpu(ent->lde_namelen)) == 0 ||
2261 strncmp(ent->lde_name, "..",
2262 le16_to_cpu(ent->lde_namelen)) == 0))
2268 stripe_hash = le64_to_cpu(dp->ldp_hash_end);
2271 page_cache_release(page);
2274 /* reach the end of current stripe, go to next stripe */
2275 if (stripe_hash == MDS_DIR_END_OFF)
2281 if (min_ent != NULL) {
2282 if (le64_to_cpu(min_ent->lde_hash) >
2283 le64_to_cpu(ent->lde_hash)) {
2286 page_cache_release(min_page);
2291 page_cache_release(page);
2302 if (*ppage != NULL) {
2304 page_cache_release(*ppage);
2306 *stripe_offset = min_idx;
2313 * Build dir entry page from a striped directory
2315 * This function gets one entry by @offset from a striped directory. It will
2316 * read entries from all of stripes, and choose one closest to the required
2317 * offset(&offset). A few notes
2318 * 1. skip . and .. for non-zero stripes, because there can only have one .
2319 * and .. in a directory.
2320 * 2. op_data will be shared by all of stripes, instead of allocating new
2321 * one, so need to restore before reusing.
2322 * 3. release the entry page if that is not being chosen.
2324 * \param[in] exp obd export refer to LMV
2325 * \param[in] op_data hold those MD parameters of read_entry
2326 * \param[in] cb_op ldlm callback being used in enqueue in mdc_read_entry
2327 * \param[out] ldp the entry being read
2328 * \param[out] ppage the page holding the entry. Note: because the entry
2329 * will be accessed in upper layer, so we need hold the
2330 * page until the usages of entry is finished, see
2331 * ll_dir_entry_next.
2333 * retval =0 if get entry successfully
2334 * <0 cannot get entry
2336 static int lmv_read_striped_page(struct obd_export *exp,
2337 struct md_op_data *op_data,
2338 struct md_callback *cb_op,
2339 __u64 offset, struct page **ppage)
2341 struct obd_device *obd = exp->exp_obd;
2342 struct lu_fid master_fid = op_data->op_fid1;
2343 struct inode *master_inode = op_data->op_data;
2344 __u64 hash_offset = offset;
2345 struct lu_dirpage *dp;
2346 struct page *min_ent_page = NULL;
2347 struct page *ent_page = NULL;
2348 struct lu_dirent *ent;
2351 struct lu_dirent *min_ent = NULL;
2352 struct lu_dirent *last_ent;
2357 rc = lmv_check_connect(obd);
2361 /* Allocate a page and read entries from all of stripes and fill
2362 * the page by hash order */
2363 ent_page = alloc_page(GFP_KERNEL);
2364 if (ent_page == NULL)
2367 /* Initialize the entry page */
2368 dp = kmap(ent_page);
2369 memset(dp, 0, sizeof(*dp));
2370 dp->ldp_hash_start = cpu_to_le64(offset);
2371 dp->ldp_flags |= LDF_COLLIDE;
2374 left_bytes = PAGE_CACHE_SIZE - sizeof(*dp);
2380 /* Find the minum entry from all sub-stripes */
2381 rc = lmv_get_min_striped_entry(exp, op_data, cb_op, hash_offset,
2387 /* If it can not get minum entry, it means it already reaches
2388 * the end of this directory */
2389 if (min_ent == NULL) {
2390 last_ent->lde_reclen = 0;
2391 hash_offset = MDS_DIR_END_OFF;
2395 ent_size = le16_to_cpu(min_ent->lde_reclen);
2397 /* the last entry lde_reclen is 0, but it might not
2398 * the end of this entry of this temporay entry */
2400 ent_size = lu_dirent_calc_size(
2401 le16_to_cpu(min_ent->lde_namelen),
2402 le32_to_cpu(min_ent->lde_attrs));
2403 if (ent_size > left_bytes) {
2404 last_ent->lde_reclen = cpu_to_le16(0);
2405 hash_offset = le64_to_cpu(min_ent->lde_hash);
2409 memcpy(ent, min_ent, ent_size);
2411 /* Replace . with master FID and Replace .. with the parent FID
2412 * of master object */
2413 if (strncmp(ent->lde_name, ".",
2414 le16_to_cpu(ent->lde_namelen)) == 0 &&
2415 le16_to_cpu(ent->lde_namelen) == 1)
2416 fid_cpu_to_le(&ent->lde_fid, &master_fid);
2417 else if (strncmp(ent->lde_name, "..",
2418 le16_to_cpu(ent->lde_namelen)) == 0 &&
2419 le16_to_cpu(ent->lde_namelen) == 2)
2420 fid_cpu_to_le(&ent->lde_fid, &op_data->op_fid3);
2422 left_bytes -= ent_size;
2423 ent->lde_reclen = cpu_to_le16(ent_size);
2425 ent = (void *)ent + ent_size;
2426 hash_offset = le64_to_cpu(min_ent->lde_hash);
2427 if (hash_offset == MDS_DIR_END_OFF) {
2428 last_ent->lde_reclen = 0;
2433 if (min_ent_page != NULL) {
2434 kunmap(min_ent_page);
2435 page_cache_release(min_ent_page);
2438 if (unlikely(rc != 0)) {
2439 __free_page(ent_page);
2443 dp->ldp_flags |= LDF_EMPTY;
2444 dp->ldp_flags = cpu_to_le32(dp->ldp_flags);
2445 dp->ldp_hash_end = cpu_to_le64(hash_offset);
2448 /* We do not want to allocate md_op_data during each
2449 * dir entry reading, so op_data will be shared by every stripe,
2450 * then we need to restore it back to original value before
2451 * return to the upper layer */
2452 op_data->op_fid1 = master_fid;
2453 op_data->op_fid2 = master_fid;
2454 op_data->op_data = master_inode;
2461 int lmv_read_page(struct obd_export *exp, struct md_op_data *op_data,
2462 struct md_callback *cb_op, __u64 offset,
2463 struct page **ppage)
2465 struct obd_device *obd = exp->exp_obd;
2466 struct lmv_obd *lmv = &obd->u.lmv;
2467 struct lmv_stripe_md *lsm = op_data->op_mea1;
2468 struct lmv_tgt_desc *tgt;
2472 rc = lmv_check_connect(obd);
2476 if (unlikely(lsm != NULL)) {
2477 rc = lmv_read_striped_page(exp, op_data, cb_op, offset, ppage);
2481 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2483 RETURN(PTR_ERR(tgt));
2485 rc = md_read_page(tgt->ltd_exp, op_data, cb_op, offset, ppage);
2491 * Unlink a file/directory
2493 * Unlink a file or directory under the parent dir. The unlink request
2494 * usually will be sent to the MDT where the child is located, but if
2495 * the client does not have the child FID then request will be sent to the
2496 * MDT where the parent is located.
2498 * If the parent is a striped directory then it also needs to locate which
2499 * stripe the name of the child is located, and replace the parent FID
2500 * (@op->op_fid1) with the stripe FID. Note: if the stripe is unknown,
2501 * it will walk through all of sub-stripes until the child is being
2504 * \param[in] exp export refer to LMV
2505 * \param[in] op_data different parameters transferred beween client
2506 * MD stacks, name, namelen, FIDs etc.
2507 * op_fid1 is the parent FID, op_fid2 is the child
2509 * \param[out] request point to the request of unlink.
2511 * retval 0 if succeed
2512 * negative errno if failed.
2514 static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data,
2515 struct ptlrpc_request **request)
2517 struct obd_device *obd = exp->exp_obd;
2518 struct lmv_obd *lmv = &obd->u.lmv;
2519 struct lmv_tgt_desc *tgt = NULL;
2520 struct lmv_tgt_desc *parent_tgt = NULL;
2521 struct mdt_body *body;
2523 int stripe_index = 0;
2524 struct lmv_stripe_md *lsm = op_data->op_mea1;
2527 rc = lmv_check_connect(obd);
2531 /* For striped dir, we need to locate the parent as well */
2533 struct lmv_tgt_desc *tmp;
2535 LASSERT(op_data->op_name != NULL &&
2536 op_data->op_namelen != 0);
2538 tmp = lmv_locate_target_for_name(lmv, lsm,
2540 op_data->op_namelen,
2544 /* return -EBADFD means unknown hash type, might
2545 * need try all sub-stripe here */
2546 if (IS_ERR(tmp) && PTR_ERR(tmp) != -EBADFD)
2547 RETURN(PTR_ERR(tmp));
2549 /* Note: both migrating dir and unknown hash dir need to
2550 * try all of sub-stripes, so we need start search the
2551 * name from stripe 0, but migrating dir is already handled
2552 * inside lmv_locate_target_for_name(), so we only check
2553 * unknown hash type directory here */
2554 if (!lmv_is_known_hash_type(lsm->lsm_md_hash_type)) {
2555 struct lmv_oinfo *oinfo;
2557 oinfo = &lsm->lsm_md_oinfo[stripe_index];
2559 op_data->op_fid1 = oinfo->lmo_fid;
2560 op_data->op_mds = oinfo->lmo_mds;
2565 /* Send unlink requests to the MDT where the child is located */
2566 if (likely(!fid_is_zero(&op_data->op_fid2)))
2567 tgt = lmv_find_target(lmv, &op_data->op_fid2);
2568 else if (lsm != NULL)
2569 tgt = lmv_get_target(lmv, op_data->op_mds, NULL);
2571 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
2574 RETURN(PTR_ERR(tgt));
2576 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2577 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2578 op_data->op_cap = cfs_curproc_cap_pack();
2581 * If child's fid is given, cancel unused locks for it if it is from
2582 * another export than parent.
2584 * LOOKUP lock for child (fid3) should also be cancelled on parent
2585 * tgt_tgt in mdc_unlink().
2587 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
2590 * Cancel FULL locks on child (fid3).
2592 parent_tgt = lmv_find_target(lmv, &op_data->op_fid1);
2593 if (IS_ERR(parent_tgt))
2594 RETURN(PTR_ERR(parent_tgt));
2596 if (parent_tgt != tgt) {
2597 rc = lmv_early_cancel(exp, parent_tgt, op_data, tgt->ltd_idx,
2598 LCK_EX, MDS_INODELOCK_LOOKUP,
2599 MF_MDC_CANCEL_FID3);
2602 rc = lmv_early_cancel(exp, NULL, op_data, tgt->ltd_idx, LCK_EX,
2603 MDS_INODELOCK_FULL, MF_MDC_CANCEL_FID3);
2607 CDEBUG(D_INODE, "unlink with fid="DFID"/"DFID" -> mds #%u\n",
2608 PFID(&op_data->op_fid1), PFID(&op_data->op_fid2), tgt->ltd_idx);
2610 rc = md_unlink(tgt->ltd_exp, op_data, request);
2611 if (rc != 0 && rc != -EREMOTE && rc != -ENOENT)
2614 /* Try next stripe if it is needed. */
2615 if (rc == -ENOENT && lsm != NULL && lmv_need_try_all_stripes(lsm)) {
2616 struct lmv_oinfo *oinfo;
2619 if (stripe_index >= lsm->lsm_md_stripe_count)
2622 oinfo = &lsm->lsm_md_oinfo[stripe_index];
2624 op_data->op_fid1 = oinfo->lmo_fid;
2625 op_data->op_mds = oinfo->lmo_mds;
2627 ptlrpc_req_finished(*request);
2630 goto try_next_stripe;
2633 body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
2637 /* Not cross-ref case, just get out of here. */
2638 if (likely(!(body->mbo_valid & OBD_MD_MDS)))
2641 CDEBUG(D_INODE, "%s: try unlink to another MDT for "DFID"\n",
2642 exp->exp_obd->obd_name, PFID(&body->mbo_fid1));
2644 /* This is a remote object, try remote MDT, Note: it may
2645 * try more than 1 time here, Considering following case
2646 * /mnt/lustre is root on MDT0, remote1 is on MDT1
2647 * 1. Initially A does not know where remote1 is, it send
2648 * unlink RPC to MDT0, MDT0 return -EREMOTE, it will
2649 * resend unlink RPC to MDT1 (retry 1st time).
2651 * 2. During the unlink RPC in flight,
2652 * client B mv /mnt/lustre/remote1 /mnt/lustre/remote2
2653 * and create new remote1, but on MDT0
2655 * 3. MDT1 get unlink RPC(from A), then do remote lock on
2656 * /mnt/lustre, then lookup get fid of remote1, and find
2657 * it is remote dir again, and replay -EREMOTE again.
2659 * 4. Then A will resend unlink RPC to MDT0. (retry 2nd times).
2661 * In theory, it might try unlimited time here, but it should
2662 * be very rare case. */
2663 op_data->op_fid2 = body->mbo_fid1;
2664 ptlrpc_req_finished(*request);
2670 static int lmv_precleanup(struct obd_device *obd)
2673 fld_client_proc_fini(&obd->u.lmv.lmv_fld);
2674 lprocfs_obd_cleanup(obd);
2675 lprocfs_free_md_stats(obd);
2680 * Get by key a value associated with a LMV device.
2682 * Dispatch request to lower-layer devices as needed.
2684 * \param[in] env execution environment for this thread
2685 * \param[in] exp export for the LMV device
2686 * \param[in] keylen length of key identifier
2687 * \param[in] key identifier of key to get value for
2688 * \param[in] vallen size of \a val
2689 * \param[out] val pointer to storage location for value
2690 * \param[in] lsm optional striping metadata of object
2692 * \retval 0 on success
2693 * \retval negative negated errno on failure
2695 static int lmv_get_info(const struct lu_env *env, struct obd_export *exp,
2696 __u32 keylen, void *key, __u32 *vallen, void *val)
2698 struct obd_device *obd;
2699 struct lmv_obd *lmv;
2703 obd = class_exp2obd(exp);
2705 CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n",
2706 exp->exp_handle.h_cookie);
2711 if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) {
2714 rc = lmv_check_connect(obd);
2718 LASSERT(*vallen == sizeof(__u32));
2719 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2720 struct lmv_tgt_desc *tgt = lmv->tgts[i];
2722 * All tgts should be connected when this gets called.
2724 if (tgt == NULL || tgt->ltd_exp == NULL)
2727 if (!obd_get_info(env, tgt->ltd_exp, keylen, key,
2732 } else if (KEY_IS(KEY_MAX_EASIZE) ||
2733 KEY_IS(KEY_DEFAULT_EASIZE) ||
2734 KEY_IS(KEY_CONN_DATA)) {
2735 rc = lmv_check_connect(obd);
2740 * Forwarding this request to first MDS, it should know LOV
2743 rc = obd_get_info(env, lmv->tgts[0]->ltd_exp, keylen, key,
2745 if (!rc && KEY_IS(KEY_CONN_DATA))
2746 exp->exp_connect_data = *(struct obd_connect_data *)val;
2748 } else if (KEY_IS(KEY_TGT_COUNT)) {
2749 *((int *)val) = lmv->desc.ld_tgt_count;
2753 CDEBUG(D_IOCTL, "Invalid key\n");
2758 * Asynchronously set by key a value associated with a LMV device.
2760 * Dispatch request to lower-layer devices as needed.
2762 * \param[in] env execution environment for this thread
2763 * \param[in] exp export for the LMV device
2764 * \param[in] keylen length of key identifier
2765 * \param[in] key identifier of key to store value for
2766 * \param[in] vallen size of value to store
2767 * \param[in] val pointer to data to be stored
2768 * \param[in] set optional list of related ptlrpc requests
2770 * \retval 0 on success
2771 * \retval negative negated errno on failure
2773 int lmv_set_info_async(const struct lu_env *env, struct obd_export *exp,
2774 __u32 keylen, void *key, __u32 vallen, void *val,
2775 struct ptlrpc_request_set *set)
2777 struct lmv_tgt_desc *tgt = NULL;
2778 struct obd_device *obd;
2779 struct lmv_obd *lmv;
2783 obd = class_exp2obd(exp);
2785 CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n",
2786 exp->exp_handle.h_cookie);
2791 if (KEY_IS(KEY_READ_ONLY) || KEY_IS(KEY_FLUSH_CTX) ||
2792 KEY_IS(KEY_DEFAULT_EASIZE)) {
2795 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2798 if (tgt == NULL || tgt->ltd_exp == NULL)
2801 err = obd_set_info_async(env, tgt->ltd_exp,
2802 keylen, key, vallen, val, set);
2813 static int lmv_unpack_md_v1(struct obd_export *exp, struct lmv_stripe_md *lsm,
2814 const struct lmv_mds_md_v1 *lmm1)
2816 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2823 lsm->lsm_md_magic = le32_to_cpu(lmm1->lmv_magic);
2824 lsm->lsm_md_stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
2825 lsm->lsm_md_master_mdt_index = le32_to_cpu(lmm1->lmv_master_mdt_index);
2826 if (OBD_FAIL_CHECK(OBD_FAIL_UNKNOWN_LMV_STRIPE))
2827 lsm->lsm_md_hash_type = LMV_HASH_TYPE_UNKNOWN;
2829 lsm->lsm_md_hash_type = le32_to_cpu(lmm1->lmv_hash_type);
2830 lsm->lsm_md_layout_version = le32_to_cpu(lmm1->lmv_layout_version);
2831 cplen = strlcpy(lsm->lsm_md_pool_name, lmm1->lmv_pool_name,
2832 sizeof(lsm->lsm_md_pool_name));
2834 if (cplen >= sizeof(lsm->lsm_md_pool_name))
2837 CDEBUG(D_INFO, "unpack lsm count %d, master %d hash_type %d"
2838 "layout_version %d\n", lsm->lsm_md_stripe_count,
2839 lsm->lsm_md_master_mdt_index, lsm->lsm_md_hash_type,
2840 lsm->lsm_md_layout_version);
2842 stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
2843 for (i = 0; i < stripe_count; i++) {
2844 fid_le_to_cpu(&lsm->lsm_md_oinfo[i].lmo_fid,
2845 &lmm1->lmv_stripe_fids[i]);
2846 rc = lmv_fld_lookup(lmv, &lsm->lsm_md_oinfo[i].lmo_fid,
2847 &lsm->lsm_md_oinfo[i].lmo_mds);
2850 CDEBUG(D_INFO, "unpack fid #%d "DFID"\n", i,
2851 PFID(&lsm->lsm_md_oinfo[i].lmo_fid));
2857 static int lmv_unpackmd(struct obd_export *exp, struct lmv_stripe_md **lsmp,
2858 const union lmv_mds_md *lmm, size_t lmm_size)
2860 struct lmv_stripe_md *lsm;
2863 bool allocated = false;
2866 LASSERT(lsmp != NULL);
2870 if (lsm != NULL && lmm == NULL) {
2872 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
2873 /* For migrating inode, the master stripe and master
2874 * object will be the same, so do not need iput, see
2875 * ll_update_lsm_md */
2876 if (!(lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION &&
2877 i == 0) && lsm->lsm_md_oinfo[i].lmo_root != NULL)
2878 iput(lsm->lsm_md_oinfo[i].lmo_root);
2880 lsm_size = lmv_stripe_md_size(lsm->lsm_md_stripe_count);
2881 OBD_FREE(lsm, lsm_size);
2886 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE)
2890 if (le32_to_cpu(lmm->lmv_magic) != LMV_MAGIC_V1 &&
2891 le32_to_cpu(lmm->lmv_magic) != LMV_USER_MAGIC) {
2892 CERROR("%s: invalid lmv magic %x: rc = %d\n",
2893 exp->exp_obd->obd_name, le32_to_cpu(lmm->lmv_magic),
2898 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_V1)
2899 lsm_size = lmv_stripe_md_size(lmv_mds_md_stripe_count_get(lmm));
2902 * Unpack default dirstripe(lmv_user_md) to lmv_stripe_md,
2903 * stripecount should be 0 then.
2905 lsm_size = lmv_stripe_md_size(0);
2907 lsm_size = lmv_stripe_md_size(lmv_mds_md_stripe_count_get(lmm));
2909 OBD_ALLOC(lsm, lsm_size);
2916 switch (le32_to_cpu(lmm->lmv_magic)) {
2918 rc = lmv_unpack_md_v1(exp, lsm, &lmm->lmv_md_v1);
2921 CERROR("%s: unrecognized magic %x\n", exp->exp_obd->obd_name,
2922 le32_to_cpu(lmm->lmv_magic));
2927 if (rc != 0 && allocated) {
2928 OBD_FREE(lsm, lsm_size);
2935 void lmv_free_memmd(struct lmv_stripe_md *lsm)
2937 lmv_unpackmd(NULL, &lsm, NULL, 0);
2939 EXPORT_SYMBOL(lmv_free_memmd);
2941 static int lmv_cancel_unused(struct obd_export *exp, const struct lu_fid *fid,
2942 union ldlm_policy_data *policy,
2943 enum ldlm_mode mode, enum ldlm_cancel_flags flags,
2946 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2951 LASSERT(fid != NULL);
2953 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2954 struct lmv_tgt_desc *tgt = lmv->tgts[i];
2957 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
2960 err = md_cancel_unused(tgt->ltd_exp, fid, policy, mode, flags,
2968 static int lmv_set_lock_data(struct obd_export *exp,
2969 const struct lustre_handle *lockh,
2970 void *data, __u64 *bits)
2972 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2973 struct lmv_tgt_desc *tgt = lmv->tgts[0];
2977 if (tgt == NULL || tgt->ltd_exp == NULL)
2979 rc = md_set_lock_data(tgt->ltd_exp, lockh, data, bits);
2983 enum ldlm_mode lmv_lock_match(struct obd_export *exp, __u64 flags,
2984 const struct lu_fid *fid, enum ldlm_type type,
2985 union ldlm_policy_data *policy,
2986 enum ldlm_mode mode, struct lustre_handle *lockh)
2988 struct obd_device *obd = exp->exp_obd;
2989 struct lmv_obd *lmv = &obd->u.lmv;
2995 CDEBUG(D_INODE, "Lock match for "DFID"\n", PFID(fid));
2998 * With DNE every object can have two locks in different namespaces:
2999 * lookup lock in space of MDT storing direntry and update/open lock in
3000 * space of MDT storing inode. Try the MDT that the FID maps to first,
3001 * since this can be easily found, and only try others if that fails.
3003 for (i = 0, tgt = lmv_find_target_index(lmv, fid);
3004 i < lmv->desc.ld_tgt_count;
3005 i++, tgt = (tgt + 1) % lmv->desc.ld_tgt_count) {
3007 CDEBUG(D_HA, "%s: "DFID" is inaccessible: rc = %d\n",
3008 obd->obd_name, PFID(fid), tgt);
3012 if (lmv->tgts[tgt] == NULL ||
3013 lmv->tgts[tgt]->ltd_exp == NULL ||
3014 lmv->tgts[tgt]->ltd_active == 0)
3017 rc = md_lock_match(lmv->tgts[tgt]->ltd_exp, flags, fid,
3018 type, policy, mode, lockh);
3026 int lmv_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
3027 struct obd_export *dt_exp, struct obd_export *md_exp,
3028 struct lustre_md *md)
3030 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
3031 struct lmv_tgt_desc *tgt = lmv->tgts[0];
3033 if (tgt == NULL || tgt->ltd_exp == NULL)
3036 return md_get_lustre_md(lmv->tgts[0]->ltd_exp, req, dt_exp, md_exp, md);
3039 int lmv_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
3041 struct obd_device *obd = exp->exp_obd;
3042 struct lmv_obd *lmv = &obd->u.lmv;
3043 struct lmv_tgt_desc *tgt = lmv->tgts[0];
3046 if (md->lmv != NULL) {
3047 lmv_free_memmd(md->lmv);
3050 if (tgt == NULL || tgt->ltd_exp == NULL)
3052 RETURN(md_free_lustre_md(lmv->tgts[0]->ltd_exp, md));
3055 int lmv_set_open_replay_data(struct obd_export *exp,
3056 struct obd_client_handle *och,
3057 struct lookup_intent *it)
3059 struct obd_device *obd = exp->exp_obd;
3060 struct lmv_obd *lmv = &obd->u.lmv;
3061 struct lmv_tgt_desc *tgt;
3064 tgt = lmv_find_target(lmv, &och->och_fid);
3066 RETURN(PTR_ERR(tgt));
3068 RETURN(md_set_open_replay_data(tgt->ltd_exp, och, it));
3071 int lmv_clear_open_replay_data(struct obd_export *exp,
3072 struct obd_client_handle *och)
3074 struct obd_device *obd = exp->exp_obd;
3075 struct lmv_obd *lmv = &obd->u.lmv;
3076 struct lmv_tgt_desc *tgt;
3079 tgt = lmv_find_target(lmv, &och->och_fid);
3081 RETURN(PTR_ERR(tgt));
3083 RETURN(md_clear_open_replay_data(tgt->ltd_exp, och));
3086 int lmv_intent_getattr_async(struct obd_export *exp,
3087 struct md_enqueue_info *minfo)
3089 struct md_op_data *op_data = &minfo->mi_data;
3090 struct obd_device *obd = exp->exp_obd;
3091 struct lmv_obd *lmv = &obd->u.lmv;
3092 struct lmv_tgt_desc *ptgt = NULL;
3093 struct lmv_tgt_desc *ctgt = NULL;
3097 if (!fid_is_sane(&op_data->op_fid2))
3100 rc = lmv_check_connect(obd);
3104 ptgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
3106 RETURN(PTR_ERR(ptgt));
3108 ctgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
3110 RETURN(PTR_ERR(ctgt));
3113 * if child is on remote MDT, we need 2 async RPCs to fetch both LOOKUP
3114 * lock on parent, and UPDATE lock on child MDT, which makes all
3115 * complicated. Considering remote dir is rare case, and not supporting
3116 * it in statahead won't cause any issue, drop its support for now.
3121 rc = md_intent_getattr_async(ptgt->ltd_exp, minfo);
3125 int lmv_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
3126 struct lu_fid *fid, __u64 *bits)
3128 struct obd_device *obd = exp->exp_obd;
3129 struct lmv_obd *lmv = &obd->u.lmv;
3130 struct lmv_tgt_desc *tgt;
3134 rc = lmv_check_connect(obd);
3138 tgt = lmv_find_target(lmv, fid);
3140 RETURN(PTR_ERR(tgt));
3142 rc = md_revalidate_lock(tgt->ltd_exp, it, fid, bits);
3146 int lmv_get_fid_from_lsm(struct obd_export *exp,
3147 const struct lmv_stripe_md *lsm,
3148 const char *name, int namelen, struct lu_fid *fid)
3150 const struct lmv_oinfo *oinfo;
3152 LASSERT(lsm != NULL);
3153 oinfo = lsm_name_to_stripe_info(lsm, name, namelen);
3155 return PTR_ERR(oinfo);
3157 *fid = oinfo->lmo_fid;
3163 * For lmv, only need to send request to master MDT, and the master MDT will
3164 * process with other slave MDTs. The only exception is Q_GETOQUOTA for which
3165 * we directly fetch data from the slave MDTs.
3167 int lmv_quotactl(struct obd_device *unused, struct obd_export *exp,
3168 struct obd_quotactl *oqctl)
3170 struct obd_device *obd = class_exp2obd(exp);
3171 struct lmv_obd *lmv = &obd->u.lmv;
3172 struct lmv_tgt_desc *tgt = lmv->tgts[0];
3175 __u64 curspace, curinodes;
3179 tgt->ltd_exp == NULL ||
3181 lmv->desc.ld_tgt_count == 0) {
3182 CERROR("master lmv inactive\n");
3186 if (oqctl->qc_cmd != Q_GETOQUOTA) {
3187 rc = obd_quotactl(tgt->ltd_exp, oqctl);
3191 curspace = curinodes = 0;
3192 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
3196 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
3199 err = obd_quotactl(tgt->ltd_exp, oqctl);
3201 CERROR("getquota on mdt %d failed. %d\n", i, err);
3205 curspace += oqctl->qc_dqblk.dqb_curspace;
3206 curinodes += oqctl->qc_dqblk.dqb_curinodes;
3209 oqctl->qc_dqblk.dqb_curspace = curspace;
3210 oqctl->qc_dqblk.dqb_curinodes = curinodes;
3215 static int lmv_merge_attr(struct obd_export *exp,
3216 const struct lmv_stripe_md *lsm,
3217 struct cl_attr *attr,
3218 ldlm_blocking_callback cb_blocking)
3223 rc = lmv_revalidate_slaves(exp, lsm, cb_blocking, 0);
3227 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
3228 struct inode *inode = lsm->lsm_md_oinfo[i].lmo_root;
3230 CDEBUG(D_INFO, ""DFID" size %llu, blocks %llu nlink %u,"
3231 " atime %lu ctime %lu, mtime %lu.\n",
3232 PFID(&lsm->lsm_md_oinfo[i].lmo_fid),
3233 i_size_read(inode), (unsigned long long)inode->i_blocks,
3234 inode->i_nlink, LTIME_S(inode->i_atime),
3235 LTIME_S(inode->i_ctime), LTIME_S(inode->i_mtime));
3237 /* for slave stripe, it needs to subtract nlink for . and .. */
3239 attr->cat_nlink += inode->i_nlink - 2;
3241 attr->cat_nlink = inode->i_nlink;
3243 attr->cat_size += i_size_read(inode);
3244 attr->cat_blocks += inode->i_blocks;
3246 if (attr->cat_atime < LTIME_S(inode->i_atime))
3247 attr->cat_atime = LTIME_S(inode->i_atime);
3249 if (attr->cat_ctime < LTIME_S(inode->i_ctime))
3250 attr->cat_ctime = LTIME_S(inode->i_ctime);
3252 if (attr->cat_mtime < LTIME_S(inode->i_mtime))
3253 attr->cat_mtime = LTIME_S(inode->i_mtime);
3258 struct obd_ops lmv_obd_ops = {
3259 .o_owner = THIS_MODULE,
3260 .o_setup = lmv_setup,
3261 .o_cleanup = lmv_cleanup,
3262 .o_precleanup = lmv_precleanup,
3263 .o_process_config = lmv_process_config,
3264 .o_connect = lmv_connect,
3265 .o_disconnect = lmv_disconnect,
3266 .o_statfs = lmv_statfs,
3267 .o_get_info = lmv_get_info,
3268 .o_set_info_async = lmv_set_info_async,
3269 .o_notify = lmv_notify,
3270 .o_get_uuid = lmv_get_uuid,
3271 .o_iocontrol = lmv_iocontrol,
3272 .o_quotactl = lmv_quotactl
3275 struct md_ops lmv_md_ops = {
3276 .m_get_root = lmv_get_root,
3277 .m_null_inode = lmv_null_inode,
3278 .m_close = lmv_close,
3279 .m_create = lmv_create,
3280 .m_enqueue = lmv_enqueue,
3281 .m_getattr = lmv_getattr,
3282 .m_getxattr = lmv_getxattr,
3283 .m_getattr_name = lmv_getattr_name,
3284 .m_intent_lock = lmv_intent_lock,
3286 .m_rename = lmv_rename,
3287 .m_setattr = lmv_setattr,
3288 .m_setxattr = lmv_setxattr,
3289 .m_fsync = lmv_fsync,
3290 .m_read_page = lmv_read_page,
3291 .m_unlink = lmv_unlink,
3292 .m_init_ea_size = lmv_init_ea_size,
3293 .m_cancel_unused = lmv_cancel_unused,
3294 .m_set_lock_data = lmv_set_lock_data,
3295 .m_lock_match = lmv_lock_match,
3296 .m_get_lustre_md = lmv_get_lustre_md,
3297 .m_free_lustre_md = lmv_free_lustre_md,
3298 .m_merge_attr = lmv_merge_attr,
3299 .m_set_open_replay_data = lmv_set_open_replay_data,
3300 .m_clear_open_replay_data = lmv_clear_open_replay_data,
3301 .m_intent_getattr_async = lmv_intent_getattr_async,
3302 .m_revalidate_lock = lmv_revalidate_lock,
3303 .m_get_fid_from_lsm = lmv_get_fid_from_lsm,
3304 .m_unpackmd = lmv_unpackmd,
3307 static int __init lmv_init(void)
3309 return class_register_type(&lmv_obd_ops, &lmv_md_ops, true, NULL,
3310 LUSTRE_LMV_NAME, NULL);
3313 static void __exit lmv_exit(void)
3315 class_unregister_type(LUSTRE_LMV_NAME);
3318 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
3319 MODULE_DESCRIPTION("Lustre Logical Metadata Volume");
3320 MODULE_VERSION(LUSTRE_VERSION_STRING);
3321 MODULE_LICENSE("GPL");
3323 module_init(lmv_init);
3324 module_exit(lmv_exit);