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 int remote_gf_size = 0;
697 gf = (struct getinfo_fid2path *)karg;
698 tgt = lmv_find_target(lmv, &gf->gf_fid);
700 RETURN(PTR_ERR(tgt));
703 rc = obd_iocontrol(OBD_IOC_FID2PATH, tgt->ltd_exp, len, gf, uarg);
704 if (rc != 0 && rc != -EREMOTE)
705 GOTO(out_fid2path, rc);
707 /* If remote_gf != NULL, it means just building the
708 * path on the remote MDT, copy this path segement to gf */
709 if (remote_gf != NULL) {
710 struct getinfo_fid2path *ori_gf;
713 ori_gf = (struct getinfo_fid2path *)karg;
714 if (strlen(ori_gf->gf_path) +
715 strlen(gf->gf_path) > ori_gf->gf_pathlen)
716 GOTO(out_fid2path, rc = -EOVERFLOW);
718 ptr = ori_gf->gf_path;
720 memmove(ptr + strlen(gf->gf_path) + 1, ptr,
721 strlen(ori_gf->gf_path));
723 strncpy(ptr, gf->gf_path, strlen(gf->gf_path));
724 ptr += strlen(gf->gf_path);
728 CDEBUG(D_INFO, "%s: get path %s "DFID" rec: "LPU64" ln: %u\n",
729 tgt->ltd_exp->exp_obd->obd_name,
730 gf->gf_path, PFID(&gf->gf_fid), gf->gf_recno,
734 GOTO(out_fid2path, rc);
736 /* sigh, has to go to another MDT to do path building further */
737 if (remote_gf == NULL) {
738 remote_gf_size = sizeof(*remote_gf) + PATH_MAX;
739 OBD_ALLOC(remote_gf, remote_gf_size);
740 if (remote_gf == NULL)
741 GOTO(out_fid2path, rc = -ENOMEM);
742 remote_gf->gf_pathlen = PATH_MAX;
745 if (!fid_is_sane(&gf->gf_fid)) {
746 CERROR("%s: invalid FID "DFID": rc = %d\n",
747 tgt->ltd_exp->exp_obd->obd_name,
748 PFID(&gf->gf_fid), -EINVAL);
749 GOTO(out_fid2path, rc = -EINVAL);
752 tgt = lmv_find_target(lmv, &gf->gf_fid);
754 GOTO(out_fid2path, rc = -EINVAL);
756 remote_gf->gf_fid = gf->gf_fid;
757 remote_gf->gf_recno = -1;
758 remote_gf->gf_linkno = -1;
759 memset(remote_gf->gf_path, 0, remote_gf->gf_pathlen);
761 goto repeat_fid2path;
764 if (remote_gf != NULL)
765 OBD_FREE(remote_gf, remote_gf_size);
769 static int lmv_hsm_req_count(struct lmv_obd *lmv,
770 const struct hsm_user_request *hur,
771 const struct lmv_tgt_desc *tgt_mds)
775 struct lmv_tgt_desc *curr_tgt;
777 /* count how many requests must be sent to the given target */
778 for (i = 0; i < hur->hur_request.hr_itemcount; i++) {
779 curr_tgt = lmv_find_target(lmv, &hur->hur_user_item[i].hui_fid);
780 if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid))
786 static void lmv_hsm_req_build(struct lmv_obd *lmv,
787 struct hsm_user_request *hur_in,
788 const struct lmv_tgt_desc *tgt_mds,
789 struct hsm_user_request *hur_out)
792 struct lmv_tgt_desc *curr_tgt;
794 /* build the hsm_user_request for the given target */
795 hur_out->hur_request = hur_in->hur_request;
797 for (i = 0; i < hur_in->hur_request.hr_itemcount; i++) {
798 curr_tgt = lmv_find_target(lmv,
799 &hur_in->hur_user_item[i].hui_fid);
800 if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid)) {
801 hur_out->hur_user_item[nr_out] =
802 hur_in->hur_user_item[i];
806 hur_out->hur_request.hr_itemcount = nr_out;
807 memcpy(hur_data(hur_out), hur_data(hur_in),
808 hur_in->hur_request.hr_data_len);
811 static int lmv_hsm_ct_unregister(struct lmv_obd *lmv, unsigned int cmd, int len,
812 struct lustre_kernelcomm *lk,
819 /* unregister request (call from llapi_hsm_copytool_fini) */
820 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
821 struct lmv_tgt_desc *tgt = lmv->tgts[i];
823 if (tgt == NULL || tgt->ltd_exp == NULL)
825 /* best effort: try to clean as much as possible
826 * (continue on error) */
827 obd_iocontrol(cmd, tgt->ltd_exp, len, lk, uarg);
830 /* Whatever the result, remove copytool from kuc groups.
831 * Unreached coordinators will get EPIPE on next requests
832 * and will unregister automatically.
834 rc = libcfs_kkuc_group_rem(lk->lk_uid, lk->lk_group);
839 static int lmv_hsm_ct_register(struct lmv_obd *lmv, unsigned int cmd, int len,
840 struct lustre_kernelcomm *lk, __user void *uarg)
845 bool any_set = false;
846 struct kkuc_ct_data kcd = { 0 };
849 /* All or nothing: try to register to all MDS.
850 * In case of failure, unregister from previous MDS,
851 * except if it because of inactive target. */
852 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
853 struct lmv_tgt_desc *tgt = lmv->tgts[i];
855 if (tgt == NULL || tgt->ltd_exp == NULL)
857 err = obd_iocontrol(cmd, tgt->ltd_exp, len, lk, uarg);
859 if (tgt->ltd_active) {
860 /* permanent error */
861 CERROR("%s: iocontrol MDC %s on MDT"
862 " idx %d cmd %x: err = %d\n",
863 class_exp2obd(lmv->exp)->obd_name,
864 tgt->ltd_uuid.uuid, i, cmd, err);
866 lk->lk_flags |= LK_FLG_STOP;
867 /* unregister from previous MDS */
868 for (j = 0; j < i; j++) {
870 if (tgt == NULL || tgt->ltd_exp == NULL)
872 obd_iocontrol(cmd, tgt->ltd_exp, len,
877 /* else: transient error.
878 * kuc will register to the missing MDT
886 /* no registration done: return error */
889 /* at least one registration done, with no failure */
890 filp = fget(lk->lk_wfd);
894 kcd.kcd_magic = KKUC_CT_DATA_MAGIC;
895 kcd.kcd_uuid = lmv->cluuid;
896 kcd.kcd_archive = lk->lk_data;
898 rc = libcfs_kkuc_group_add(filp, lk->lk_uid, lk->lk_group,
909 static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp,
910 int len, void *karg, void __user *uarg)
912 struct obd_device *obddev = class_exp2obd(exp);
913 struct lmv_obd *lmv = &obddev->u.lmv;
914 struct lmv_tgt_desc *tgt = NULL;
918 __u32 count = lmv->desc.ld_tgt_count;
925 case IOC_OBD_STATFS: {
926 struct obd_ioctl_data *data = karg;
927 struct obd_device *mdc_obd;
928 struct obd_statfs stat_buf = {0};
931 memcpy(&index, data->ioc_inlbuf2, sizeof(__u32));
932 if ((index >= count))
935 tgt = lmv->tgts[index];
936 if (tgt == NULL || !tgt->ltd_active)
939 mdc_obd = class_exp2obd(tgt->ltd_exp);
944 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(mdc_obd),
945 min((int) data->ioc_plen2,
946 (int) sizeof(struct obd_uuid))))
949 rc = obd_statfs(NULL, tgt->ltd_exp, &stat_buf,
950 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
954 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
955 min((int) data->ioc_plen1,
956 (int) sizeof(stat_buf))))
960 case OBD_IOC_QUOTACTL: {
961 struct if_quotactl *qctl = karg;
962 struct obd_quotactl *oqctl;
964 if (qctl->qc_valid == QC_MDTIDX) {
965 if (count <= qctl->qc_idx)
968 tgt = lmv->tgts[qctl->qc_idx];
969 if (tgt == NULL || tgt->ltd_exp == NULL)
971 } else if (qctl->qc_valid == QC_UUID) {
972 for (i = 0; i < count; i++) {
976 if (!obd_uuid_equals(&tgt->ltd_uuid,
980 if (tgt->ltd_exp == NULL)
992 LASSERT(tgt != NULL && tgt->ltd_exp != NULL);
993 OBD_ALLOC_PTR(oqctl);
997 QCTL_COPY(oqctl, qctl);
998 rc = obd_quotactl(tgt->ltd_exp, oqctl);
1000 QCTL_COPY(qctl, oqctl);
1001 qctl->qc_valid = QC_MDTIDX;
1002 qctl->obd_uuid = tgt->ltd_uuid;
1004 OBD_FREE_PTR(oqctl);
1007 case OBD_IOC_CHANGELOG_SEND:
1008 case OBD_IOC_CHANGELOG_CLEAR: {
1009 struct ioc_changelog *icc = karg;
1011 if (icc->icc_mdtindex >= count)
1014 tgt = lmv->tgts[icc->icc_mdtindex];
1015 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
1017 rc = obd_iocontrol(cmd, tgt->ltd_exp, sizeof(*icc), icc, NULL);
1020 case LL_IOC_GET_CONNECT_FLAGS: {
1022 if (tgt == NULL || tgt->ltd_exp == NULL)
1024 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1027 case LL_IOC_FID2MDTIDX: {
1028 struct lu_fid *fid = karg;
1031 rc = lmv_fld_lookup(lmv, fid, &mdt_index);
1035 /* Note: this is from llite(see ll_dir_ioctl()), @uarg does not
1036 * point to user space memory for FID2MDTIDX. */
1037 *(__u32 *)uarg = mdt_index;
1040 case OBD_IOC_FID2PATH: {
1041 rc = lmv_fid2path(exp, len, karg, uarg);
1044 case LL_IOC_HSM_STATE_GET:
1045 case LL_IOC_HSM_STATE_SET:
1046 case LL_IOC_HSM_ACTION: {
1047 struct md_op_data *op_data = karg;
1049 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1051 RETURN(PTR_ERR(tgt));
1053 if (tgt->ltd_exp == NULL)
1056 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1059 case LL_IOC_HSM_PROGRESS: {
1060 const struct hsm_progress_kernel *hpk = karg;
1062 tgt = lmv_find_target(lmv, &hpk->hpk_fid);
1064 RETURN(PTR_ERR(tgt));
1065 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1068 case LL_IOC_HSM_REQUEST: {
1069 struct hsm_user_request *hur = karg;
1070 unsigned int reqcount = hur->hur_request.hr_itemcount;
1075 /* if the request is about a single fid
1076 * or if there is a single MDS, no need to split
1078 if (reqcount == 1 || count == 1) {
1079 tgt = lmv_find_target(lmv,
1080 &hur->hur_user_item[0].hui_fid);
1082 RETURN(PTR_ERR(tgt));
1083 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1085 /* split fid list to their respective MDS */
1086 for (i = 0; i < count; i++) {
1087 unsigned int nr, reqlen;
1089 struct hsm_user_request *req;
1092 if (tgt == NULL || tgt->ltd_exp == NULL)
1095 nr = lmv_hsm_req_count(lmv, hur, tgt);
1096 if (nr == 0) /* nothing for this MDS */
1099 /* build a request with fids for this MDS */
1100 reqlen = offsetof(typeof(*hur),
1102 + hur->hur_request.hr_data_len;
1103 OBD_ALLOC_LARGE(req, reqlen);
1107 lmv_hsm_req_build(lmv, hur, tgt, req);
1109 rc1 = obd_iocontrol(cmd, tgt->ltd_exp, reqlen,
1111 if (rc1 != 0 && rc == 0)
1113 OBD_FREE_LARGE(req, reqlen);
1118 case LL_IOC_LOV_SWAP_LAYOUTS: {
1119 struct md_op_data *op_data = karg;
1120 struct lmv_tgt_desc *tgt1, *tgt2;
1122 tgt1 = lmv_find_target(lmv, &op_data->op_fid1);
1124 RETURN(PTR_ERR(tgt1));
1126 tgt2 = lmv_find_target(lmv, &op_data->op_fid2);
1128 RETURN(PTR_ERR(tgt2));
1130 if ((tgt1->ltd_exp == NULL) || (tgt2->ltd_exp == NULL))
1133 /* only files on same MDT can have their layouts swapped */
1134 if (tgt1->ltd_idx != tgt2->ltd_idx)
1137 rc = obd_iocontrol(cmd, tgt1->ltd_exp, len, karg, uarg);
1140 case LL_IOC_HSM_CT_START: {
1141 struct lustre_kernelcomm *lk = karg;
1142 if (lk->lk_flags & LK_FLG_STOP)
1143 rc = lmv_hsm_ct_unregister(lmv, cmd, len, lk, uarg);
1145 rc = lmv_hsm_ct_register(lmv, cmd, len, lk, uarg);
1149 for (i = 0; i < count; i++) {
1150 struct obd_device *mdc_obd;
1154 if (tgt == NULL || tgt->ltd_exp == NULL)
1156 /* ll_umount_begin() sets force flag but for lmv, not
1157 * mdc. Let's pass it through */
1158 mdc_obd = class_exp2obd(tgt->ltd_exp);
1159 mdc_obd->obd_force = obddev->obd_force;
1160 err = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1162 if (tgt->ltd_active) {
1163 CERROR("error: iocontrol MDC %s on MDT"
1164 " idx %d cmd %x: err = %d\n",
1165 tgt->ltd_uuid.uuid, i, cmd, err);
1179 static int lmv_all_chars_policy(int count, const char *name,
1190 static int lmv_nid_policy(struct lmv_obd *lmv)
1192 struct obd_import *imp;
1196 * XXX: To get nid we assume that underlying obd device is mdc.
1198 imp = class_exp2cliimp(lmv->tgts[0].ltd_exp);
1199 id = imp->imp_connection->c_self ^ (imp->imp_connection->c_self >> 32);
1200 return id % lmv->desc.ld_tgt_count;
1203 static int lmv_choose_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
1204 placement_policy_t placement)
1206 switch (placement) {
1207 case PLACEMENT_CHAR_POLICY:
1208 return lmv_all_chars_policy(lmv->desc.ld_tgt_count,
1210 op_data->op_namelen);
1211 case PLACEMENT_NID_POLICY:
1212 return lmv_nid_policy(lmv);
1218 CERROR("Unsupported placement policy %x\n", placement);
1224 * This is _inode_ placement policy function (not name).
1226 static int lmv_placement_policy(struct obd_device *obd,
1227 struct md_op_data *op_data, u32 *mds)
1229 struct lmv_obd *lmv = &obd->u.lmv;
1232 LASSERT(mds != NULL);
1234 if (lmv->desc.ld_tgt_count == 1) {
1239 if (op_data->op_default_stripe_offset != -1) {
1240 *mds = op_data->op_default_stripe_offset;
1245 * If stripe_offset is provided during setdirstripe
1246 * (setdirstripe -i xx), xx MDS will be choosen.
1248 if (op_data->op_cli_flags & CLI_SET_MEA && op_data->op_data != NULL) {
1249 struct lmv_user_md *lum;
1251 lum = op_data->op_data;
1253 if (le32_to_cpu(lum->lum_stripe_offset) != (__u32)-1) {
1254 *mds = le32_to_cpu(lum->lum_stripe_offset);
1256 /* -1 means default, which will be in the same MDT with
1258 *mds = op_data->op_mds;
1259 lum->lum_stripe_offset = cpu_to_le32(op_data->op_mds);
1262 /* Allocate new fid on target according to operation type and
1263 * parent home mds. */
1264 *mds = op_data->op_mds;
1270 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds)
1272 struct lmv_tgt_desc *tgt;
1276 tgt = lmv_get_target(lmv, mds, NULL);
1278 RETURN(PTR_ERR(tgt));
1281 * New seq alloc and FLD setup should be atomic. Otherwise we may find
1282 * on server that seq in new allocated fid is not yet known.
1284 mutex_lock(&tgt->ltd_fid_mutex);
1286 if (tgt->ltd_active == 0 || tgt->ltd_exp == NULL)
1287 GOTO(out, rc = -ENODEV);
1290 * Asking underlying tgt layer to allocate new fid.
1292 rc = obd_fid_alloc(NULL, tgt->ltd_exp, fid, NULL);
1294 LASSERT(fid_is_sane(fid));
1300 mutex_unlock(&tgt->ltd_fid_mutex);
1304 int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp,
1305 struct lu_fid *fid, struct md_op_data *op_data)
1307 struct obd_device *obd = class_exp2obd(exp);
1308 struct lmv_obd *lmv = &obd->u.lmv;
1313 LASSERT(op_data != NULL);
1314 LASSERT(fid != NULL);
1316 rc = lmv_placement_policy(obd, op_data, &mds);
1318 CERROR("Can't get target for allocating fid, "
1323 rc = __lmv_fid_alloc(lmv, fid, mds);
1325 CERROR("Can't alloc new fid, rc %d\n", rc);
1332 static int lmv_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
1334 struct lmv_obd *lmv = &obd->u.lmv;
1335 struct lmv_desc *desc;
1339 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
1340 CERROR("LMV setup requires a descriptor\n");
1344 desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1);
1345 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
1346 CERROR("Lmv descriptor size wrong: %d > %d\n",
1347 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
1351 lmv->tgts_size = 32U;
1352 OBD_ALLOC(lmv->tgts, sizeof(*lmv->tgts) * lmv->tgts_size);
1353 if (lmv->tgts == NULL)
1356 obd_str2uuid(&lmv->desc.ld_uuid, desc->ld_uuid.uuid);
1357 lmv->desc.ld_tgt_count = 0;
1358 lmv->desc.ld_active_tgt_count = 0;
1359 lmv->max_def_easize = 0;
1360 lmv->max_easize = 0;
1361 lmv->lmv_placement = PLACEMENT_CHAR_POLICY;
1363 spin_lock_init(&lmv->lmv_lock);
1364 mutex_init(&lmv->lmv_init_mutex);
1366 #ifdef CONFIG_PROC_FS
1367 obd->obd_vars = lprocfs_lmv_obd_vars;
1368 lprocfs_obd_setup(obd);
1369 lprocfs_alloc_md_stats(obd, 0);
1370 rc = lprocfs_seq_create(obd->obd_proc_entry, "target_obd",
1371 0444, &lmv_proc_target_fops, obd);
1373 CWARN("%s: error adding LMV target_obd file: rc = %d\n",
1376 rc = fld_client_init(&lmv->lmv_fld, obd->obd_name,
1377 LUSTRE_CLI_FLD_HASH_DHT);
1379 CERROR("Can't init FLD, err %d\n", rc);
1389 static int lmv_cleanup(struct obd_device *obd)
1391 struct lmv_obd *lmv = &obd->u.lmv;
1394 fld_client_fini(&lmv->lmv_fld);
1395 if (lmv->tgts != NULL) {
1397 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1398 if (lmv->tgts[i] == NULL)
1400 lmv_del_target(lmv, i);
1402 OBD_FREE(lmv->tgts, sizeof(*lmv->tgts) * lmv->tgts_size);
1408 static int lmv_process_config(struct obd_device *obd, size_t len, void *buf)
1410 struct lustre_cfg *lcfg = buf;
1411 struct obd_uuid obd_uuid;
1417 switch (lcfg->lcfg_command) {
1419 /* modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDT0000_UUID
1420 * 2:0 3:1 4:lustre-MDT0000-mdc_UUID */
1421 if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid))
1422 GOTO(out, rc = -EINVAL);
1424 obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1));
1426 if (sscanf(lustre_cfg_buf(lcfg, 2), "%u", &index) != 1)
1427 GOTO(out, rc = -EINVAL);
1428 if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", &gen) != 1)
1429 GOTO(out, rc = -EINVAL);
1430 rc = lmv_add_target(obd, &obd_uuid, index, gen);
1433 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1434 GOTO(out, rc = -EINVAL);
1440 static int lmv_statfs(const struct lu_env *env, struct obd_export *exp,
1441 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
1443 struct obd_device *obd = class_exp2obd(exp);
1444 struct lmv_obd *lmv = &obd->u.lmv;
1445 struct obd_statfs *temp;
1450 rc = lmv_check_connect(obd);
1454 OBD_ALLOC(temp, sizeof(*temp));
1458 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1459 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1462 rc = obd_statfs(env, lmv->tgts[i]->ltd_exp, temp,
1465 CERROR("can't stat MDS #%d (%s), error %d\n", i,
1466 lmv->tgts[i]->ltd_exp->exp_obd->obd_name,
1468 GOTO(out_free_temp, rc);
1473 /* If the statfs is from mount, it will needs
1474 * retrieve necessary information from MDT0.
1475 * i.e. mount does not need the merged osfs
1477 * And also clients can be mounted as long as
1478 * MDT0 is in service*/
1479 if (flags & OBD_STATFS_FOR_MDT0)
1480 GOTO(out_free_temp, rc);
1482 osfs->os_bavail += temp->os_bavail;
1483 osfs->os_blocks += temp->os_blocks;
1484 osfs->os_ffree += temp->os_ffree;
1485 osfs->os_files += temp->os_files;
1491 OBD_FREE(temp, sizeof(*temp));
1495 static int lmv_getstatus(struct obd_export *exp, struct lu_fid *fid)
1497 struct obd_device *obd = exp->exp_obd;
1498 struct lmv_obd *lmv = &obd->u.lmv;
1502 rc = lmv_check_connect(obd);
1506 rc = md_getstatus(lmv->tgts[0]->ltd_exp, fid);
1510 static int lmv_getxattr(struct obd_export *exp, const struct lu_fid *fid,
1511 u64 valid, const char *name,
1512 const char *input, int input_size, int output_size,
1513 int flags, struct ptlrpc_request **request)
1515 struct obd_device *obd = exp->exp_obd;
1516 struct lmv_obd *lmv = &obd->u.lmv;
1517 struct lmv_tgt_desc *tgt;
1521 rc = lmv_check_connect(obd);
1525 tgt = lmv_find_target(lmv, fid);
1527 RETURN(PTR_ERR(tgt));
1529 rc = md_getxattr(tgt->ltd_exp, fid, valid, name, input,
1530 input_size, output_size, flags, request);
1535 static int lmv_setxattr(struct obd_export *exp, const struct lu_fid *fid,
1536 u64 valid, const char *name,
1537 const char *input, int input_size, int output_size,
1538 int flags, __u32 suppgid,
1539 struct ptlrpc_request **request)
1541 struct obd_device *obd = exp->exp_obd;
1542 struct lmv_obd *lmv = &obd->u.lmv;
1543 struct lmv_tgt_desc *tgt;
1547 rc = lmv_check_connect(obd);
1551 tgt = lmv_find_target(lmv, fid);
1553 RETURN(PTR_ERR(tgt));
1555 rc = md_setxattr(tgt->ltd_exp, fid, valid, name, input,
1556 input_size, output_size, flags, suppgid,
1562 static int lmv_getattr(struct obd_export *exp, struct md_op_data *op_data,
1563 struct ptlrpc_request **request)
1565 struct obd_device *obd = exp->exp_obd;
1566 struct lmv_obd *lmv = &obd->u.lmv;
1567 struct lmv_tgt_desc *tgt;
1571 rc = lmv_check_connect(obd);
1575 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1577 RETURN(PTR_ERR(tgt));
1579 if (op_data->op_flags & MF_GET_MDT_IDX) {
1580 op_data->op_mds = tgt->ltd_idx;
1584 rc = md_getattr(tgt->ltd_exp, op_data, request);
1589 static int lmv_null_inode(struct obd_export *exp, const struct lu_fid *fid)
1591 struct obd_device *obd = exp->exp_obd;
1592 struct lmv_obd *lmv = &obd->u.lmv;
1597 rc = lmv_check_connect(obd);
1601 CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid));
1604 * With DNE every object can have two locks in different namespaces:
1605 * lookup lock in space of MDT storing direntry and update/open lock in
1606 * space of MDT storing inode.
1608 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1609 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1611 md_null_inode(lmv->tgts[i]->ltd_exp, fid);
1617 static int lmv_close(struct obd_export *exp, struct md_op_data *op_data,
1618 struct md_open_data *mod, struct ptlrpc_request **request)
1620 struct obd_device *obd = exp->exp_obd;
1621 struct lmv_obd *lmv = &obd->u.lmv;
1622 struct lmv_tgt_desc *tgt;
1626 rc = lmv_check_connect(obd);
1630 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1632 RETURN(PTR_ERR(tgt));
1634 CDEBUG(D_INODE, "CLOSE "DFID"\n", PFID(&op_data->op_fid1));
1635 rc = md_close(tgt->ltd_exp, op_data, mod, request);
1640 * Choosing the MDT by name or FID in @op_data.
1641 * For non-striped directory, it will locate MDT by fid.
1642 * For striped-directory, it will locate MDT by name. And also
1643 * it will reset op_fid1 with the FID of the choosen stripe.
1645 struct lmv_tgt_desc *
1646 lmv_locate_target_for_name(struct lmv_obd *lmv, struct lmv_stripe_md *lsm,
1647 const char *name, int namelen, struct lu_fid *fid,
1650 struct lmv_tgt_desc *tgt;
1651 const struct lmv_oinfo *oinfo;
1653 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_NAME_HASH)) {
1654 if (cfs_fail_val >= lsm->lsm_md_stripe_count)
1655 RETURN(ERR_PTR(-EBADF));
1656 oinfo = &lsm->lsm_md_oinfo[cfs_fail_val];
1658 oinfo = lsm_name_to_stripe_info(lsm, name, namelen);
1660 RETURN(ERR_CAST(oinfo));
1664 *fid = oinfo->lmo_fid;
1666 *mds = oinfo->lmo_mds;
1668 tgt = lmv_get_target(lmv, oinfo->lmo_mds, NULL);
1670 CDEBUG(D_INFO, "locate on mds %u "DFID"\n", oinfo->lmo_mds,
1671 PFID(&oinfo->lmo_fid));
1676 * Locate mds by fid or name
1678 * For striped directory (lsm != NULL), it will locate the stripe
1679 * by name hash (see lsm_name_to_stripe_info()). Note: if the hash_type
1680 * is unknown, it will return -EBADFD, and lmv_intent_lookup might need
1681 * walk through all of stripes to locate the entry.
1683 * For normal direcotry, it will locate MDS by FID directly.
1684 * \param[in] lmv LMV device
1685 * \param[in] op_data client MD stack parameters, name, namelen
1687 * \param[in] fid object FID used to locate MDS.
1689 * retval pointer to the lmv_tgt_desc if succeed.
1690 * ERR_PTR(errno) if failed.
1692 struct lmv_tgt_desc*
1693 lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
1696 struct lmv_stripe_md *lsm = op_data->op_mea1;
1697 struct lmv_tgt_desc *tgt;
1699 /* During creating VOLATILE file, it should honor the mdt
1700 * index if the file under striped dir is being restored, see
1702 if (op_data->op_bias & MDS_CREATE_VOLATILE &&
1703 (int)op_data->op_mds != -1) {
1705 tgt = lmv_get_target(lmv, op_data->op_mds, NULL);
1710 /* refill the right parent fid */
1711 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1712 struct lmv_oinfo *oinfo;
1714 oinfo = &lsm->lsm_md_oinfo[i];
1715 if (oinfo->lmo_mds == op_data->op_mds) {
1716 *fid = oinfo->lmo_fid;
1721 if (i == lsm->lsm_md_stripe_count)
1722 *fid = lsm->lsm_md_oinfo[0].lmo_fid;
1728 if (lsm == NULL || op_data->op_namelen == 0) {
1729 tgt = lmv_find_target(lmv, fid);
1733 op_data->op_mds = tgt->ltd_idx;
1737 return lmv_locate_target_for_name(lmv, lsm, op_data->op_name,
1738 op_data->op_namelen, fid,
1742 int lmv_create(struct obd_export *exp, struct md_op_data *op_data,
1743 const void *data, size_t datalen, umode_t mode, uid_t uid,
1744 gid_t gid, cfs_cap_t cap_effective, __u64 rdev,
1745 struct ptlrpc_request **request)
1747 struct obd_device *obd = exp->exp_obd;
1748 struct lmv_obd *lmv = &obd->u.lmv;
1749 struct lmv_tgt_desc *tgt;
1753 rc = lmv_check_connect(obd);
1757 if (!lmv->desc.ld_active_tgt_count)
1760 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1762 RETURN(PTR_ERR(tgt));
1764 CDEBUG(D_INODE, "CREATE name '%.*s' on "DFID" -> mds #%x\n",
1765 (int)op_data->op_namelen, op_data->op_name,
1766 PFID(&op_data->op_fid1), op_data->op_mds);
1768 rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
1771 if (exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE) {
1772 /* Send the create request to the MDT where the object
1773 * will be located */
1774 tgt = lmv_find_target(lmv, &op_data->op_fid2);
1776 RETURN(PTR_ERR(tgt));
1778 op_data->op_mds = tgt->ltd_idx;
1780 CDEBUG(D_CONFIG, "Server doesn't support striped dirs\n");
1783 CDEBUG(D_INODE, "CREATE obj "DFID" -> mds #%x\n",
1784 PFID(&op_data->op_fid2), op_data->op_mds);
1786 op_data->op_flags |= MF_MDC_CANCEL_FID1;
1787 rc = md_create(tgt->ltd_exp, op_data, data, datalen, mode, uid, gid,
1788 cap_effective, rdev, request);
1790 if (*request == NULL)
1792 CDEBUG(D_INODE, "Created - "DFID"\n", PFID(&op_data->op_fid2));
1798 lmv_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
1799 const union ldlm_policy_data *policy,
1800 struct lookup_intent *it, struct md_op_data *op_data,
1801 struct lustre_handle *lockh, __u64 extra_lock_flags)
1803 struct obd_device *obd = exp->exp_obd;
1804 struct lmv_obd *lmv = &obd->u.lmv;
1805 struct lmv_tgt_desc *tgt;
1809 rc = lmv_check_connect(obd);
1813 CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID"\n",
1814 LL_IT2STR(it), PFID(&op_data->op_fid1));
1816 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1818 RETURN(PTR_ERR(tgt));
1820 CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID" -> mds #%u\n",
1821 LL_IT2STR(it), PFID(&op_data->op_fid1), tgt->ltd_idx);
1823 rc = md_enqueue(tgt->ltd_exp, einfo, policy, it, op_data, lockh,
1830 lmv_getattr_name(struct obd_export *exp,struct md_op_data *op_data,
1831 struct ptlrpc_request **preq)
1833 struct ptlrpc_request *req = NULL;
1834 struct obd_device *obd = exp->exp_obd;
1835 struct lmv_obd *lmv = &obd->u.lmv;
1836 struct lmv_tgt_desc *tgt;
1837 struct mdt_body *body;
1841 rc = lmv_check_connect(obd);
1845 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1847 RETURN(PTR_ERR(tgt));
1849 CDEBUG(D_INODE, "GETATTR_NAME for %*s on "DFID" -> mds #%d\n",
1850 (int)op_data->op_namelen, op_data->op_name,
1851 PFID(&op_data->op_fid1), tgt->ltd_idx);
1853 rc = md_getattr_name(tgt->ltd_exp, op_data, preq);
1857 body = req_capsule_server_get(&(*preq)->rq_pill, &RMF_MDT_BODY);
1858 LASSERT(body != NULL);
1860 if (body->mbo_valid & OBD_MD_MDS) {
1861 struct lu_fid rid = body->mbo_fid1;
1862 CDEBUG(D_INODE, "Request attrs for "DFID"\n",
1865 tgt = lmv_find_target(lmv, &rid);
1867 ptlrpc_req_finished(*preq);
1869 RETURN(PTR_ERR(tgt));
1872 op_data->op_fid1 = rid;
1873 op_data->op_valid |= OBD_MD_FLCROSSREF;
1874 op_data->op_namelen = 0;
1875 op_data->op_name = NULL;
1876 rc = md_getattr_name(tgt->ltd_exp, op_data, &req);
1877 ptlrpc_req_finished(*preq);
1884 #define md_op_data_fid(op_data, fl) \
1885 (fl == MF_MDC_CANCEL_FID1 ? &op_data->op_fid1 : \
1886 fl == MF_MDC_CANCEL_FID2 ? &op_data->op_fid2 : \
1887 fl == MF_MDC_CANCEL_FID3 ? &op_data->op_fid3 : \
1888 fl == MF_MDC_CANCEL_FID4 ? &op_data->op_fid4 : \
1891 static int lmv_early_cancel(struct obd_export *exp, struct lmv_tgt_desc *tgt,
1892 struct md_op_data *op_data, __u32 op_tgt,
1893 enum ldlm_mode mode, int bits, int flag)
1895 struct lu_fid *fid = md_op_data_fid(op_data, flag);
1896 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
1897 union ldlm_policy_data policy = { { 0 } };
1901 if (!fid_is_sane(fid))
1905 tgt = lmv_find_target(lmv, fid);
1907 RETURN(PTR_ERR(tgt));
1910 if (tgt->ltd_idx != op_tgt) {
1911 CDEBUG(D_INODE, "EARLY_CANCEL on "DFID"\n", PFID(fid));
1912 policy.l_inodebits.bits = bits;
1913 rc = md_cancel_unused(tgt->ltd_exp, fid, &policy,
1914 mode, LCF_ASYNC, NULL);
1917 "EARLY_CANCEL skip operation target %d on "DFID"\n",
1919 op_data->op_flags |= flag;
1927 * llite passes fid of an target inode in op_data->op_fid1 and id of directory in
1930 static int lmv_link(struct obd_export *exp, struct md_op_data *op_data,
1931 struct ptlrpc_request **request)
1933 struct obd_device *obd = exp->exp_obd;
1934 struct lmv_obd *lmv = &obd->u.lmv;
1935 struct lmv_tgt_desc *tgt;
1939 rc = lmv_check_connect(obd);
1943 LASSERT(op_data->op_namelen != 0);
1945 CDEBUG(D_INODE, "LINK "DFID":%*s to "DFID"\n",
1946 PFID(&op_data->op_fid2), (int)op_data->op_namelen,
1947 op_data->op_name, PFID(&op_data->op_fid1));
1949 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
1950 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
1951 op_data->op_cap = cfs_curproc_cap_pack();
1952 if (op_data->op_mea2 != NULL) {
1953 struct lmv_stripe_md *lsm = op_data->op_mea2;
1954 const struct lmv_oinfo *oinfo;
1956 oinfo = lsm_name_to_stripe_info(lsm, op_data->op_name,
1957 op_data->op_namelen);
1959 RETURN(PTR_ERR(oinfo));
1961 op_data->op_fid2 = oinfo->lmo_fid;
1964 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
1966 RETURN(PTR_ERR(tgt));
1969 * Cancel UPDATE lock on child (fid1).
1971 op_data->op_flags |= MF_MDC_CANCEL_FID2;
1972 rc = lmv_early_cancel(exp, NULL, op_data, tgt->ltd_idx, LCK_EX,
1973 MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1);
1977 rc = md_link(tgt->ltd_exp, op_data, request);
1982 static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data,
1983 const char *old, size_t oldlen,
1984 const char *new, size_t newlen,
1985 struct ptlrpc_request **request)
1987 struct obd_device *obd = exp->exp_obd;
1988 struct lmv_obd *lmv = &obd->u.lmv;
1989 struct lmv_tgt_desc *src_tgt;
1990 struct lmv_tgt_desc *tgt_tgt;
1991 struct obd_export *target_exp;
1992 struct mdt_body *body;
1996 LASSERT(oldlen != 0);
1998 CDEBUG(D_INODE, "RENAME %.*s in "DFID":%d to %.*s in "DFID":%d\n",
1999 (int)oldlen, old, PFID(&op_data->op_fid1),
2000 op_data->op_mea1 ? op_data->op_mea1->lsm_md_stripe_count : 0,
2001 (int)newlen, new, PFID(&op_data->op_fid2),
2002 op_data->op_mea2 ? op_data->op_mea2->lsm_md_stripe_count : 0);
2004 rc = lmv_check_connect(obd);
2008 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2009 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2010 op_data->op_cap = cfs_curproc_cap_pack();
2011 if (op_data->op_cli_flags & CLI_MIGRATE) {
2012 LASSERTF(fid_is_sane(&op_data->op_fid3), "invalid FID "DFID"\n",
2013 PFID(&op_data->op_fid3));
2015 if (op_data->op_mea1 != NULL) {
2016 struct lmv_stripe_md *lsm = op_data->op_mea1;
2017 struct lmv_tgt_desc *tmp;
2019 /* Fix the parent fid for striped dir */
2020 tmp = lmv_locate_target_for_name(lmv, lsm, old,
2025 RETURN(PTR_ERR(tmp));
2028 rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
2032 src_tgt = lmv_find_target(lmv, &op_data->op_fid3);
2033 if (IS_ERR(src_tgt))
2034 RETURN(PTR_ERR(src_tgt));
2036 target_exp = src_tgt->ltd_exp;
2038 if (op_data->op_mea1 != NULL) {
2039 struct lmv_stripe_md *lsm = op_data->op_mea1;
2041 src_tgt = lmv_locate_target_for_name(lmv, lsm, old,
2046 src_tgt = lmv_find_target(lmv, &op_data->op_fid1);
2048 if (IS_ERR(src_tgt))
2049 RETURN(PTR_ERR(src_tgt));
2052 if (op_data->op_mea2 != NULL) {
2053 struct lmv_stripe_md *lsm = op_data->op_mea2;
2055 tgt_tgt = lmv_locate_target_for_name(lmv, lsm, new,
2060 tgt_tgt = lmv_find_target(lmv, &op_data->op_fid2);
2063 if (IS_ERR(tgt_tgt))
2064 RETURN(PTR_ERR(tgt_tgt));
2066 target_exp = tgt_tgt->ltd_exp;
2070 * LOOKUP lock on src child (fid3) should also be cancelled for
2071 * src_tgt in mdc_rename.
2073 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
2076 * Cancel UPDATE locks on tgt parent (fid2), tgt_tgt is its
2079 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
2080 LCK_EX, MDS_INODELOCK_UPDATE,
2081 MF_MDC_CANCEL_FID2);
2086 * Cancel LOOKUP locks on source child (fid3) for parent tgt_tgt.
2088 if (fid_is_sane(&op_data->op_fid3)) {
2089 struct lmv_tgt_desc *tgt;
2091 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2093 RETURN(PTR_ERR(tgt));
2095 /* Cancel LOOKUP lock on its parent */
2096 rc = lmv_early_cancel(exp, tgt, op_data, src_tgt->ltd_idx,
2097 LCK_EX, MDS_INODELOCK_LOOKUP,
2098 MF_MDC_CANCEL_FID3);
2102 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
2103 LCK_EX, MDS_INODELOCK_FULL,
2104 MF_MDC_CANCEL_FID3);
2111 * Cancel all the locks on tgt child (fid4).
2113 if (fid_is_sane(&op_data->op_fid4)) {
2114 struct lmv_tgt_desc *tgt;
2116 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
2117 LCK_EX, MDS_INODELOCK_FULL,
2118 MF_MDC_CANCEL_FID4);
2122 tgt = lmv_find_target(lmv, &op_data->op_fid4);
2124 RETURN(PTR_ERR(tgt));
2126 /* Since the target child might be destroyed, and it might
2127 * become orphan, and we can only check orphan on the local
2128 * MDT right now, so we send rename request to the MDT where
2129 * target child is located. If target child does not exist,
2130 * then it will send the request to the target parent */
2131 target_exp = tgt->ltd_exp;
2134 rc = md_rename(target_exp, op_data, old, oldlen, new, newlen,
2137 if (rc != 0 && rc != -EXDEV)
2140 body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
2144 /* Not cross-ref case, just get out of here. */
2145 if (likely(!(body->mbo_valid & OBD_MD_MDS)))
2148 CDEBUG(D_INODE, "%s: try rename to another MDT for "DFID"\n",
2149 exp->exp_obd->obd_name, PFID(&body->mbo_fid1));
2151 op_data->op_fid4 = body->mbo_fid1;
2152 ptlrpc_req_finished(*request);
2157 static int lmv_setattr(struct obd_export *exp, struct md_op_data *op_data,
2158 void *ea, size_t ealen, struct ptlrpc_request **request)
2160 struct obd_device *obd = exp->exp_obd;
2161 struct lmv_obd *lmv = &obd->u.lmv;
2162 struct lmv_tgt_desc *tgt;
2166 rc = lmv_check_connect(obd);
2170 CDEBUG(D_INODE, "SETATTR for "DFID", valid 0x%x\n",
2171 PFID(&op_data->op_fid1), op_data->op_attr.ia_valid);
2173 op_data->op_flags |= MF_MDC_CANCEL_FID1;
2174 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2176 RETURN(PTR_ERR(tgt));
2178 rc = md_setattr(tgt->ltd_exp, op_data, ea, ealen, request);
2183 static int lmv_fsync(struct obd_export *exp, const struct lu_fid *fid,
2184 struct ptlrpc_request **request)
2186 struct obd_device *obd = exp->exp_obd;
2187 struct lmv_obd *lmv = &obd->u.lmv;
2188 struct lmv_tgt_desc *tgt;
2192 rc = lmv_check_connect(obd);
2196 tgt = lmv_find_target(lmv, fid);
2198 RETURN(PTR_ERR(tgt));
2200 rc = md_fsync(tgt->ltd_exp, fid, request);
2205 * Get current minimum entry from striped directory
2207 * This function will search the dir entry, whose hash value is the
2208 * closest(>=) to @hash_offset, from all of sub-stripes, and it is
2209 * only being called for striped directory.
2211 * \param[in] exp export of LMV
2212 * \param[in] op_data parameters transferred beween client MD stack
2213 * stripe_information will be included in this
2215 * \param[in] cb_op ldlm callback being used in enqueue in
2217 * \param[in] hash_offset the hash value, which is used to locate
2218 * minum(closet) dir entry
2219 * \param[in|out] stripe_offset the caller use this to indicate the stripe
2220 * index of last entry, so to avoid hash conflict
2221 * between stripes. It will also be used to
2222 * return the stripe index of current dir entry.
2223 * \param[in|out] entp the minum entry and it also is being used
2224 * to input the last dir entry to resolve the
2227 * \param[out] ppage the page which holds the minum entry
2229 * \retval = 0 get the entry successfully
2230 * negative errno (< 0) does not get the entry
2232 static int lmv_get_min_striped_entry(struct obd_export *exp,
2233 struct md_op_data *op_data,
2234 struct md_callback *cb_op,
2235 __u64 hash_offset, int *stripe_offset,
2236 struct lu_dirent **entp,
2237 struct page **ppage)
2239 struct obd_device *obd = exp->exp_obd;
2240 struct lmv_obd *lmv = &obd->u.lmv;
2241 struct lmv_stripe_md *lsm = op_data->op_mea1;
2242 struct lmv_tgt_desc *tgt;
2244 struct lu_dirent *min_ent = NULL;
2245 struct page *min_page = NULL;
2251 stripe_count = lsm->lsm_md_stripe_count;
2252 for (i = 0; i < stripe_count; i++) {
2253 struct lu_dirent *ent = NULL;
2254 struct page *page = NULL;
2255 struct lu_dirpage *dp;
2256 __u64 stripe_hash = hash_offset;
2258 tgt = lmv_get_target(lmv, lsm->lsm_md_oinfo[i].lmo_mds, NULL);
2260 GOTO(out, rc = PTR_ERR(tgt));
2262 /* op_data will be shared by each stripe, so we need
2263 * reset these value for each stripe */
2264 op_data->op_fid1 = lsm->lsm_md_oinfo[i].lmo_fid;
2265 op_data->op_fid2 = lsm->lsm_md_oinfo[i].lmo_fid;
2266 op_data->op_data = lsm->lsm_md_oinfo[i].lmo_root;
2268 rc = md_read_page(tgt->ltd_exp, op_data, cb_op, stripe_hash,
2273 dp = page_address(page);
2274 for (ent = lu_dirent_start(dp); ent != NULL;
2275 ent = lu_dirent_next(ent)) {
2276 /* Skip dummy entry */
2277 if (le16_to_cpu(ent->lde_namelen) == 0)
2280 if (le64_to_cpu(ent->lde_hash) < hash_offset)
2283 if (le64_to_cpu(ent->lde_hash) == hash_offset &&
2284 (*entp == ent || i < *stripe_offset))
2287 /* skip . and .. for other stripes */
2289 (strncmp(ent->lde_name, ".",
2290 le16_to_cpu(ent->lde_namelen)) == 0 ||
2291 strncmp(ent->lde_name, "..",
2292 le16_to_cpu(ent->lde_namelen)) == 0))
2298 stripe_hash = le64_to_cpu(dp->ldp_hash_end);
2301 page_cache_release(page);
2304 /* reach the end of current stripe, go to next stripe */
2305 if (stripe_hash == MDS_DIR_END_OFF)
2311 if (min_ent != NULL) {
2312 if (le64_to_cpu(min_ent->lde_hash) >
2313 le64_to_cpu(ent->lde_hash)) {
2316 page_cache_release(min_page);
2321 page_cache_release(page);
2332 if (*ppage != NULL) {
2334 page_cache_release(*ppage);
2336 *stripe_offset = min_idx;
2343 * Build dir entry page from a striped directory
2345 * This function gets one entry by @offset from a striped directory. It will
2346 * read entries from all of stripes, and choose one closest to the required
2347 * offset(&offset). A few notes
2348 * 1. skip . and .. for non-zero stripes, because there can only have one .
2349 * and .. in a directory.
2350 * 2. op_data will be shared by all of stripes, instead of allocating new
2351 * one, so need to restore before reusing.
2352 * 3. release the entry page if that is not being chosen.
2354 * \param[in] exp obd export refer to LMV
2355 * \param[in] op_data hold those MD parameters of read_entry
2356 * \param[in] cb_op ldlm callback being used in enqueue in mdc_read_entry
2357 * \param[out] ldp the entry being read
2358 * \param[out] ppage the page holding the entry. Note: because the entry
2359 * will be accessed in upper layer, so we need hold the
2360 * page until the usages of entry is finished, see
2361 * ll_dir_entry_next.
2363 * retval =0 if get entry successfully
2364 * <0 cannot get entry
2366 static int lmv_read_striped_page(struct obd_export *exp,
2367 struct md_op_data *op_data,
2368 struct md_callback *cb_op,
2369 __u64 offset, struct page **ppage)
2371 struct obd_device *obd = exp->exp_obd;
2372 struct lu_fid master_fid = op_data->op_fid1;
2373 struct inode *master_inode = op_data->op_data;
2374 __u64 hash_offset = offset;
2375 struct lu_dirpage *dp;
2376 struct page *min_ent_page = NULL;
2377 struct page *ent_page = NULL;
2378 struct lu_dirent *ent;
2381 struct lu_dirent *min_ent = NULL;
2382 struct lu_dirent *last_ent;
2387 rc = lmv_check_connect(obd);
2391 /* Allocate a page and read entries from all of stripes and fill
2392 * the page by hash order */
2393 ent_page = alloc_page(GFP_KERNEL);
2394 if (ent_page == NULL)
2397 /* Initialize the entry page */
2398 dp = kmap(ent_page);
2399 memset(dp, 0, sizeof(*dp));
2400 dp->ldp_hash_start = cpu_to_le64(offset);
2401 dp->ldp_flags |= LDF_COLLIDE;
2404 left_bytes = PAGE_CACHE_SIZE - sizeof(*dp);
2410 /* Find the minum entry from all sub-stripes */
2411 rc = lmv_get_min_striped_entry(exp, op_data, cb_op, hash_offset,
2417 /* If it can not get minum entry, it means it already reaches
2418 * the end of this directory */
2419 if (min_ent == NULL) {
2420 last_ent->lde_reclen = 0;
2421 hash_offset = MDS_DIR_END_OFF;
2425 ent_size = le16_to_cpu(min_ent->lde_reclen);
2427 /* the last entry lde_reclen is 0, but it might not
2428 * the end of this entry of this temporay entry */
2430 ent_size = lu_dirent_calc_size(
2431 le16_to_cpu(min_ent->lde_namelen),
2432 le32_to_cpu(min_ent->lde_attrs));
2433 if (ent_size > left_bytes) {
2434 last_ent->lde_reclen = cpu_to_le16(0);
2435 hash_offset = le64_to_cpu(min_ent->lde_hash);
2439 memcpy(ent, min_ent, ent_size);
2441 /* Replace . with master FID and Replace .. with the parent FID
2442 * of master object */
2443 if (strncmp(ent->lde_name, ".",
2444 le16_to_cpu(ent->lde_namelen)) == 0 &&
2445 le16_to_cpu(ent->lde_namelen) == 1)
2446 fid_cpu_to_le(&ent->lde_fid, &master_fid);
2447 else if (strncmp(ent->lde_name, "..",
2448 le16_to_cpu(ent->lde_namelen)) == 0 &&
2449 le16_to_cpu(ent->lde_namelen) == 2)
2450 fid_cpu_to_le(&ent->lde_fid, &op_data->op_fid3);
2452 left_bytes -= ent_size;
2453 ent->lde_reclen = cpu_to_le16(ent_size);
2455 ent = (void *)ent + ent_size;
2456 hash_offset = le64_to_cpu(min_ent->lde_hash);
2457 if (hash_offset == MDS_DIR_END_OFF) {
2458 last_ent->lde_reclen = 0;
2463 if (min_ent_page != NULL) {
2464 kunmap(min_ent_page);
2465 page_cache_release(min_ent_page);
2468 if (unlikely(rc != 0)) {
2469 __free_page(ent_page);
2473 dp->ldp_flags |= LDF_EMPTY;
2474 dp->ldp_flags = cpu_to_le32(dp->ldp_flags);
2475 dp->ldp_hash_end = cpu_to_le64(hash_offset);
2478 /* We do not want to allocate md_op_data during each
2479 * dir entry reading, so op_data will be shared by every stripe,
2480 * then we need to restore it back to original value before
2481 * return to the upper layer */
2482 op_data->op_fid1 = master_fid;
2483 op_data->op_fid2 = master_fid;
2484 op_data->op_data = master_inode;
2491 int lmv_read_page(struct obd_export *exp, struct md_op_data *op_data,
2492 struct md_callback *cb_op, __u64 offset,
2493 struct page **ppage)
2495 struct obd_device *obd = exp->exp_obd;
2496 struct lmv_obd *lmv = &obd->u.lmv;
2497 struct lmv_stripe_md *lsm = op_data->op_mea1;
2498 struct lmv_tgt_desc *tgt;
2502 rc = lmv_check_connect(obd);
2506 if (unlikely(lsm != NULL)) {
2507 rc = lmv_read_striped_page(exp, op_data, cb_op, offset, ppage);
2511 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2513 RETURN(PTR_ERR(tgt));
2515 rc = md_read_page(tgt->ltd_exp, op_data, cb_op, offset, ppage);
2521 * Unlink a file/directory
2523 * Unlink a file or directory under the parent dir. The unlink request
2524 * usually will be sent to the MDT where the child is located, but if
2525 * the client does not have the child FID then request will be sent to the
2526 * MDT where the parent is located.
2528 * If the parent is a striped directory then it also needs to locate which
2529 * stripe the name of the child is located, and replace the parent FID
2530 * (@op->op_fid1) with the stripe FID. Note: if the stripe is unknown,
2531 * it will walk through all of sub-stripes until the child is being
2534 * \param[in] exp export refer to LMV
2535 * \param[in] op_data different parameters transferred beween client
2536 * MD stacks, name, namelen, FIDs etc.
2537 * op_fid1 is the parent FID, op_fid2 is the child
2539 * \param[out] request point to the request of unlink.
2541 * retval 0 if succeed
2542 * negative errno if failed.
2544 static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data,
2545 struct ptlrpc_request **request)
2547 struct obd_device *obd = exp->exp_obd;
2548 struct lmv_obd *lmv = &obd->u.lmv;
2549 struct lmv_tgt_desc *tgt = NULL;
2550 struct lmv_tgt_desc *parent_tgt = NULL;
2551 struct mdt_body *body;
2553 int stripe_index = 0;
2554 struct lmv_stripe_md *lsm = op_data->op_mea1;
2557 rc = lmv_check_connect(obd);
2561 /* For striped dir, we need to locate the parent as well */
2563 struct lmv_tgt_desc *tmp;
2565 LASSERT(op_data->op_name != NULL &&
2566 op_data->op_namelen != 0);
2568 tmp = lmv_locate_target_for_name(lmv, lsm,
2570 op_data->op_namelen,
2574 /* return -EBADFD means unknown hash type, might
2575 * need try all sub-stripe here */
2576 if (IS_ERR(tmp) && PTR_ERR(tmp) != -EBADFD)
2577 RETURN(PTR_ERR(tmp));
2579 /* Note: both migrating dir and unknown hash dir need to
2580 * try all of sub-stripes, so we need start search the
2581 * name from stripe 0, but migrating dir is already handled
2582 * inside lmv_locate_target_for_name(), so we only check
2583 * unknown hash type directory here */
2584 if (!lmv_is_known_hash_type(lsm->lsm_md_hash_type)) {
2585 struct lmv_oinfo *oinfo;
2587 oinfo = &lsm->lsm_md_oinfo[stripe_index];
2589 op_data->op_fid1 = oinfo->lmo_fid;
2590 op_data->op_mds = oinfo->lmo_mds;
2595 /* Send unlink requests to the MDT where the child is located */
2596 if (likely(!fid_is_zero(&op_data->op_fid2)))
2597 tgt = lmv_find_target(lmv, &op_data->op_fid2);
2598 else if (lsm != NULL)
2599 tgt = lmv_get_target(lmv, op_data->op_mds, NULL);
2601 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
2604 RETURN(PTR_ERR(tgt));
2606 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2607 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2608 op_data->op_cap = cfs_curproc_cap_pack();
2611 * If child's fid is given, cancel unused locks for it if it is from
2612 * another export than parent.
2614 * LOOKUP lock for child (fid3) should also be cancelled on parent
2615 * tgt_tgt in mdc_unlink().
2617 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
2620 * Cancel FULL locks on child (fid3).
2622 parent_tgt = lmv_find_target(lmv, &op_data->op_fid1);
2623 if (IS_ERR(parent_tgt))
2624 RETURN(PTR_ERR(parent_tgt));
2626 if (parent_tgt != tgt) {
2627 rc = lmv_early_cancel(exp, parent_tgt, op_data, tgt->ltd_idx,
2628 LCK_EX, MDS_INODELOCK_LOOKUP,
2629 MF_MDC_CANCEL_FID3);
2632 rc = lmv_early_cancel(exp, NULL, op_data, tgt->ltd_idx, LCK_EX,
2633 MDS_INODELOCK_FULL, MF_MDC_CANCEL_FID3);
2637 CDEBUG(D_INODE, "unlink with fid="DFID"/"DFID" -> mds #%u\n",
2638 PFID(&op_data->op_fid1), PFID(&op_data->op_fid2), tgt->ltd_idx);
2640 rc = md_unlink(tgt->ltd_exp, op_data, request);
2641 if (rc != 0 && rc != -EREMOTE && rc != -ENOENT)
2644 /* Try next stripe if it is needed. */
2645 if (rc == -ENOENT && lsm != NULL && lmv_need_try_all_stripes(lsm)) {
2646 struct lmv_oinfo *oinfo;
2649 if (stripe_index >= lsm->lsm_md_stripe_count)
2652 oinfo = &lsm->lsm_md_oinfo[stripe_index];
2654 op_data->op_fid1 = oinfo->lmo_fid;
2655 op_data->op_mds = oinfo->lmo_mds;
2657 ptlrpc_req_finished(*request);
2660 goto try_next_stripe;
2663 body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
2667 /* Not cross-ref case, just get out of here. */
2668 if (likely(!(body->mbo_valid & OBD_MD_MDS)))
2671 CDEBUG(D_INODE, "%s: try unlink to another MDT for "DFID"\n",
2672 exp->exp_obd->obd_name, PFID(&body->mbo_fid1));
2674 /* This is a remote object, try remote MDT, Note: it may
2675 * try more than 1 time here, Considering following case
2676 * /mnt/lustre is root on MDT0, remote1 is on MDT1
2677 * 1. Initially A does not know where remote1 is, it send
2678 * unlink RPC to MDT0, MDT0 return -EREMOTE, it will
2679 * resend unlink RPC to MDT1 (retry 1st time).
2681 * 2. During the unlink RPC in flight,
2682 * client B mv /mnt/lustre/remote1 /mnt/lustre/remote2
2683 * and create new remote1, but on MDT0
2685 * 3. MDT1 get unlink RPC(from A), then do remote lock on
2686 * /mnt/lustre, then lookup get fid of remote1, and find
2687 * it is remote dir again, and replay -EREMOTE again.
2689 * 4. Then A will resend unlink RPC to MDT0. (retry 2nd times).
2691 * In theory, it might try unlimited time here, but it should
2692 * be very rare case. */
2693 op_data->op_fid2 = body->mbo_fid1;
2694 ptlrpc_req_finished(*request);
2700 static int lmv_precleanup(struct obd_device *obd)
2703 fld_client_proc_fini(&obd->u.lmv.lmv_fld);
2704 lprocfs_obd_cleanup(obd);
2705 lprocfs_free_md_stats(obd);
2710 * Get by key a value associated with a LMV device.
2712 * Dispatch request to lower-layer devices as needed.
2714 * \param[in] env execution environment for this thread
2715 * \param[in] exp export for the LMV device
2716 * \param[in] keylen length of key identifier
2717 * \param[in] key identifier of key to get value for
2718 * \param[in] vallen size of \a val
2719 * \param[out] val pointer to storage location for value
2720 * \param[in] lsm optional striping metadata of object
2722 * \retval 0 on success
2723 * \retval negative negated errno on failure
2725 static int lmv_get_info(const struct lu_env *env, struct obd_export *exp,
2726 __u32 keylen, void *key, __u32 *vallen, void *val)
2728 struct obd_device *obd;
2729 struct lmv_obd *lmv;
2733 obd = class_exp2obd(exp);
2735 CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n",
2736 exp->exp_handle.h_cookie);
2741 if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) {
2744 rc = lmv_check_connect(obd);
2748 LASSERT(*vallen == sizeof(__u32));
2749 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2750 struct lmv_tgt_desc *tgt = lmv->tgts[i];
2752 * All tgts should be connected when this gets called.
2754 if (tgt == NULL || tgt->ltd_exp == NULL)
2757 if (!obd_get_info(env, tgt->ltd_exp, keylen, key,
2762 } else if (KEY_IS(KEY_MAX_EASIZE) ||
2763 KEY_IS(KEY_DEFAULT_EASIZE) ||
2764 KEY_IS(KEY_CONN_DATA)) {
2765 rc = lmv_check_connect(obd);
2770 * Forwarding this request to first MDS, it should know LOV
2773 rc = obd_get_info(env, lmv->tgts[0]->ltd_exp, keylen, key,
2775 if (!rc && KEY_IS(KEY_CONN_DATA))
2776 exp->exp_connect_data = *(struct obd_connect_data *)val;
2778 } else if (KEY_IS(KEY_TGT_COUNT)) {
2779 *((int *)val) = lmv->desc.ld_tgt_count;
2783 CDEBUG(D_IOCTL, "Invalid key\n");
2788 * Asynchronously set by key a value associated with a LMV device.
2790 * Dispatch request to lower-layer devices as needed.
2792 * \param[in] env execution environment for this thread
2793 * \param[in] exp export for the LMV device
2794 * \param[in] keylen length of key identifier
2795 * \param[in] key identifier of key to store value for
2796 * \param[in] vallen size of value to store
2797 * \param[in] val pointer to data to be stored
2798 * \param[in] set optional list of related ptlrpc requests
2800 * \retval 0 on success
2801 * \retval negative negated errno on failure
2803 int lmv_set_info_async(const struct lu_env *env, struct obd_export *exp,
2804 __u32 keylen, void *key, __u32 vallen, void *val,
2805 struct ptlrpc_request_set *set)
2807 struct lmv_tgt_desc *tgt = NULL;
2808 struct obd_device *obd;
2809 struct lmv_obd *lmv;
2813 obd = class_exp2obd(exp);
2815 CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n",
2816 exp->exp_handle.h_cookie);
2821 if (KEY_IS(KEY_READ_ONLY) || KEY_IS(KEY_FLUSH_CTX) ||
2822 KEY_IS(KEY_DEFAULT_EASIZE)) {
2825 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2828 if (tgt == NULL || tgt->ltd_exp == NULL)
2831 err = obd_set_info_async(env, tgt->ltd_exp,
2832 keylen, key, vallen, val, set);
2843 static int lmv_unpack_md_v1(struct obd_export *exp, struct lmv_stripe_md *lsm,
2844 const struct lmv_mds_md_v1 *lmm1)
2846 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2853 lsm->lsm_md_magic = le32_to_cpu(lmm1->lmv_magic);
2854 lsm->lsm_md_stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
2855 lsm->lsm_md_master_mdt_index = le32_to_cpu(lmm1->lmv_master_mdt_index);
2856 if (OBD_FAIL_CHECK(OBD_FAIL_UNKNOWN_LMV_STRIPE))
2857 lsm->lsm_md_hash_type = LMV_HASH_TYPE_UNKNOWN;
2859 lsm->lsm_md_hash_type = le32_to_cpu(lmm1->lmv_hash_type);
2860 lsm->lsm_md_layout_version = le32_to_cpu(lmm1->lmv_layout_version);
2861 cplen = strlcpy(lsm->lsm_md_pool_name, lmm1->lmv_pool_name,
2862 sizeof(lsm->lsm_md_pool_name));
2864 if (cplen >= sizeof(lsm->lsm_md_pool_name))
2867 CDEBUG(D_INFO, "unpack lsm count %d, master %d hash_type %d"
2868 "layout_version %d\n", lsm->lsm_md_stripe_count,
2869 lsm->lsm_md_master_mdt_index, lsm->lsm_md_hash_type,
2870 lsm->lsm_md_layout_version);
2872 stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
2873 for (i = 0; i < stripe_count; i++) {
2874 fid_le_to_cpu(&lsm->lsm_md_oinfo[i].lmo_fid,
2875 &lmm1->lmv_stripe_fids[i]);
2876 rc = lmv_fld_lookup(lmv, &lsm->lsm_md_oinfo[i].lmo_fid,
2877 &lsm->lsm_md_oinfo[i].lmo_mds);
2880 CDEBUG(D_INFO, "unpack fid #%d "DFID"\n", i,
2881 PFID(&lsm->lsm_md_oinfo[i].lmo_fid));
2887 static int lmv_unpackmd(struct obd_export *exp, struct lmv_stripe_md **lsmp,
2888 const union lmv_mds_md *lmm, size_t lmm_size)
2890 struct lmv_stripe_md *lsm;
2893 bool allocated = false;
2896 LASSERT(lsmp != NULL);
2900 if (lsm != NULL && lmm == NULL) {
2902 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
2903 /* For migrating inode, the master stripe and master
2904 * object will be the same, so do not need iput, see
2905 * ll_update_lsm_md */
2906 if (!(lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION &&
2907 i == 0) && lsm->lsm_md_oinfo[i].lmo_root != NULL)
2908 iput(lsm->lsm_md_oinfo[i].lmo_root);
2910 lsm_size = lmv_stripe_md_size(lsm->lsm_md_stripe_count);
2911 OBD_FREE(lsm, lsm_size);
2916 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE)
2920 if (le32_to_cpu(lmm->lmv_magic) != LMV_MAGIC_V1 &&
2921 le32_to_cpu(lmm->lmv_magic) != LMV_USER_MAGIC) {
2922 CERROR("%s: invalid lmv magic %x: rc = %d\n",
2923 exp->exp_obd->obd_name, le32_to_cpu(lmm->lmv_magic),
2928 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_V1)
2929 lsm_size = lmv_stripe_md_size(lmv_mds_md_stripe_count_get(lmm));
2932 * Unpack default dirstripe(lmv_user_md) to lmv_stripe_md,
2933 * stripecount should be 0 then.
2935 lsm_size = lmv_stripe_md_size(0);
2937 lsm_size = lmv_stripe_md_size(lmv_mds_md_stripe_count_get(lmm));
2939 OBD_ALLOC(lsm, lsm_size);
2946 switch (le32_to_cpu(lmm->lmv_magic)) {
2948 rc = lmv_unpack_md_v1(exp, lsm, &lmm->lmv_md_v1);
2951 CERROR("%s: unrecognized magic %x\n", exp->exp_obd->obd_name,
2952 le32_to_cpu(lmm->lmv_magic));
2957 if (rc != 0 && allocated) {
2958 OBD_FREE(lsm, lsm_size);
2965 void lmv_free_memmd(struct lmv_stripe_md *lsm)
2967 lmv_unpackmd(NULL, &lsm, NULL, 0);
2969 EXPORT_SYMBOL(lmv_free_memmd);
2971 static int lmv_cancel_unused(struct obd_export *exp, const struct lu_fid *fid,
2972 union ldlm_policy_data *policy,
2973 enum ldlm_mode mode, enum ldlm_cancel_flags flags,
2976 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2981 LASSERT(fid != NULL);
2983 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2984 struct lmv_tgt_desc *tgt = lmv->tgts[i];
2987 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
2990 err = md_cancel_unused(tgt->ltd_exp, fid, policy, mode, flags,
2998 int lmv_set_lock_data(struct obd_export *exp, __u64 *lockh, void *data,
3001 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
3002 struct lmv_tgt_desc *tgt = lmv->tgts[0];
3006 if (tgt == NULL || tgt->ltd_exp == NULL)
3008 rc = md_set_lock_data(tgt->ltd_exp, lockh, data, bits);
3012 enum ldlm_mode lmv_lock_match(struct obd_export *exp, __u64 flags,
3013 const struct lu_fid *fid, enum ldlm_type type,
3014 union ldlm_policy_data *policy,
3015 enum ldlm_mode mode, struct lustre_handle *lockh)
3017 struct obd_device *obd = exp->exp_obd;
3018 struct lmv_obd *lmv = &obd->u.lmv;
3024 CDEBUG(D_INODE, "Lock match for "DFID"\n", PFID(fid));
3027 * With DNE every object can have two locks in different namespaces:
3028 * lookup lock in space of MDT storing direntry and update/open lock in
3029 * space of MDT storing inode. Try the MDT that the FID maps to first,
3030 * since this can be easily found, and only try others if that fails.
3032 for (i = 0, tgt = lmv_find_target_index(lmv, fid);
3033 i < lmv->desc.ld_tgt_count;
3034 i++, tgt = (tgt + 1) % lmv->desc.ld_tgt_count) {
3036 CDEBUG(D_HA, "%s: "DFID" is inaccessible: rc = %d\n",
3037 obd->obd_name, PFID(fid), tgt);
3041 if (lmv->tgts[tgt] == NULL ||
3042 lmv->tgts[tgt]->ltd_exp == NULL ||
3043 lmv->tgts[tgt]->ltd_active == 0)
3046 rc = md_lock_match(lmv->tgts[tgt]->ltd_exp, flags, fid,
3047 type, policy, mode, lockh);
3055 int lmv_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
3056 struct obd_export *dt_exp, struct obd_export *md_exp,
3057 struct lustre_md *md)
3059 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
3060 struct lmv_tgt_desc *tgt = lmv->tgts[0];
3062 if (tgt == NULL || tgt->ltd_exp == NULL)
3065 return md_get_lustre_md(lmv->tgts[0]->ltd_exp, req, dt_exp, md_exp, md);
3068 int lmv_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
3070 struct obd_device *obd = exp->exp_obd;
3071 struct lmv_obd *lmv = &obd->u.lmv;
3072 struct lmv_tgt_desc *tgt = lmv->tgts[0];
3075 if (md->lmv != NULL) {
3076 lmv_free_memmd(md->lmv);
3079 if (tgt == NULL || tgt->ltd_exp == NULL)
3081 RETURN(md_free_lustre_md(lmv->tgts[0]->ltd_exp, md));
3084 int lmv_set_open_replay_data(struct obd_export *exp,
3085 struct obd_client_handle *och,
3086 struct lookup_intent *it)
3088 struct obd_device *obd = exp->exp_obd;
3089 struct lmv_obd *lmv = &obd->u.lmv;
3090 struct lmv_tgt_desc *tgt;
3093 tgt = lmv_find_target(lmv, &och->och_fid);
3095 RETURN(PTR_ERR(tgt));
3097 RETURN(md_set_open_replay_data(tgt->ltd_exp, och, it));
3100 int lmv_clear_open_replay_data(struct obd_export *exp,
3101 struct obd_client_handle *och)
3103 struct obd_device *obd = exp->exp_obd;
3104 struct lmv_obd *lmv = &obd->u.lmv;
3105 struct lmv_tgt_desc *tgt;
3108 tgt = lmv_find_target(lmv, &och->och_fid);
3110 RETURN(PTR_ERR(tgt));
3112 RETURN(md_clear_open_replay_data(tgt->ltd_exp, och));
3115 static int lmv_get_remote_perm(struct obd_export *exp, const struct lu_fid *fid,
3116 u32 suppgid, struct ptlrpc_request **request)
3118 struct obd_device *obd = exp->exp_obd;
3119 struct lmv_obd *lmv = &obd->u.lmv;
3120 struct lmv_tgt_desc *tgt;
3124 rc = lmv_check_connect(obd);
3128 tgt = lmv_find_target(lmv, fid);
3130 RETURN(PTR_ERR(tgt));
3132 rc = md_get_remote_perm(tgt->ltd_exp, fid, suppgid, request);
3136 int lmv_intent_getattr_async(struct obd_export *exp,
3137 struct md_enqueue_info *minfo)
3139 struct md_op_data *op_data = &minfo->mi_data;
3140 struct obd_device *obd = exp->exp_obd;
3141 struct lmv_obd *lmv = &obd->u.lmv;
3142 struct lmv_tgt_desc *ptgt = NULL;
3143 struct lmv_tgt_desc *ctgt = NULL;
3147 if (!fid_is_sane(&op_data->op_fid2))
3150 rc = lmv_check_connect(obd);
3154 ptgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
3156 RETURN(PTR_ERR(ptgt));
3158 ctgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
3160 RETURN(PTR_ERR(ctgt));
3163 * if child is on remote MDT, we need 2 async RPCs to fetch both LOOKUP
3164 * lock on parent, and UPDATE lock on child MDT, which makes all
3165 * complicated. Considering remote dir is rare case, and not supporting
3166 * it in statahead won't cause any issue, drop its support for now.
3171 rc = md_intent_getattr_async(ptgt->ltd_exp, minfo);
3175 int lmv_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
3176 struct lu_fid *fid, __u64 *bits)
3178 struct obd_device *obd = exp->exp_obd;
3179 struct lmv_obd *lmv = &obd->u.lmv;
3180 struct lmv_tgt_desc *tgt;
3184 rc = lmv_check_connect(obd);
3188 tgt = lmv_find_target(lmv, fid);
3190 RETURN(PTR_ERR(tgt));
3192 rc = md_revalidate_lock(tgt->ltd_exp, it, fid, bits);
3196 int lmv_get_fid_from_lsm(struct obd_export *exp,
3197 const struct lmv_stripe_md *lsm,
3198 const char *name, int namelen, struct lu_fid *fid)
3200 const struct lmv_oinfo *oinfo;
3202 LASSERT(lsm != NULL);
3203 oinfo = lsm_name_to_stripe_info(lsm, name, namelen);
3205 return PTR_ERR(oinfo);
3207 *fid = oinfo->lmo_fid;
3213 * For lmv, only need to send request to master MDT, and the master MDT will
3214 * process with other slave MDTs. The only exception is Q_GETOQUOTA for which
3215 * we directly fetch data from the slave MDTs.
3217 int lmv_quotactl(struct obd_device *unused, struct obd_export *exp,
3218 struct obd_quotactl *oqctl)
3220 struct obd_device *obd = class_exp2obd(exp);
3221 struct lmv_obd *lmv = &obd->u.lmv;
3222 struct lmv_tgt_desc *tgt = lmv->tgts[0];
3225 __u64 curspace, curinodes;
3229 tgt->ltd_exp == NULL ||
3231 lmv->desc.ld_tgt_count == 0) {
3232 CERROR("master lmv inactive\n");
3236 if (oqctl->qc_cmd != Q_GETOQUOTA) {
3237 rc = obd_quotactl(tgt->ltd_exp, oqctl);
3241 curspace = curinodes = 0;
3242 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
3246 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
3249 err = obd_quotactl(tgt->ltd_exp, oqctl);
3251 CERROR("getquota on mdt %d failed. %d\n", i, err);
3255 curspace += oqctl->qc_dqblk.dqb_curspace;
3256 curinodes += oqctl->qc_dqblk.dqb_curinodes;
3259 oqctl->qc_dqblk.dqb_curspace = curspace;
3260 oqctl->qc_dqblk.dqb_curinodes = curinodes;
3265 static int lmv_merge_attr(struct obd_export *exp,
3266 const struct lmv_stripe_md *lsm,
3267 struct cl_attr *attr,
3268 ldlm_blocking_callback cb_blocking)
3273 rc = lmv_revalidate_slaves(exp, lsm, cb_blocking, 0);
3277 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
3278 struct inode *inode = lsm->lsm_md_oinfo[i].lmo_root;
3280 CDEBUG(D_INFO, ""DFID" size %llu, blocks %llu nlink %u,"
3281 " atime %lu ctime %lu, mtime %lu.\n",
3282 PFID(&lsm->lsm_md_oinfo[i].lmo_fid),
3283 i_size_read(inode), (unsigned long long)inode->i_blocks,
3284 inode->i_nlink, LTIME_S(inode->i_atime),
3285 LTIME_S(inode->i_ctime), LTIME_S(inode->i_mtime));
3287 /* for slave stripe, it needs to subtract nlink for . and .. */
3289 attr->cat_nlink += inode->i_nlink - 2;
3291 attr->cat_nlink = inode->i_nlink;
3293 attr->cat_size += i_size_read(inode);
3294 attr->cat_blocks += inode->i_blocks;
3296 if (attr->cat_atime < LTIME_S(inode->i_atime))
3297 attr->cat_atime = LTIME_S(inode->i_atime);
3299 if (attr->cat_ctime < LTIME_S(inode->i_ctime))
3300 attr->cat_ctime = LTIME_S(inode->i_ctime);
3302 if (attr->cat_mtime < LTIME_S(inode->i_mtime))
3303 attr->cat_mtime = LTIME_S(inode->i_mtime);
3308 struct obd_ops lmv_obd_ops = {
3309 .o_owner = THIS_MODULE,
3310 .o_setup = lmv_setup,
3311 .o_cleanup = lmv_cleanup,
3312 .o_precleanup = lmv_precleanup,
3313 .o_process_config = lmv_process_config,
3314 .o_connect = lmv_connect,
3315 .o_disconnect = lmv_disconnect,
3316 .o_statfs = lmv_statfs,
3317 .o_get_info = lmv_get_info,
3318 .o_set_info_async = lmv_set_info_async,
3319 .o_notify = lmv_notify,
3320 .o_get_uuid = lmv_get_uuid,
3321 .o_iocontrol = lmv_iocontrol,
3322 .o_quotactl = lmv_quotactl
3325 struct md_ops lmv_md_ops = {
3326 .m_getstatus = lmv_getstatus,
3327 .m_null_inode = lmv_null_inode,
3328 .m_close = lmv_close,
3329 .m_create = lmv_create,
3330 .m_enqueue = lmv_enqueue,
3331 .m_getattr = lmv_getattr,
3332 .m_getxattr = lmv_getxattr,
3333 .m_getattr_name = lmv_getattr_name,
3334 .m_intent_lock = lmv_intent_lock,
3336 .m_rename = lmv_rename,
3337 .m_setattr = lmv_setattr,
3338 .m_setxattr = lmv_setxattr,
3339 .m_fsync = lmv_fsync,
3340 .m_read_page = lmv_read_page,
3341 .m_unlink = lmv_unlink,
3342 .m_init_ea_size = lmv_init_ea_size,
3343 .m_cancel_unused = lmv_cancel_unused,
3344 .m_set_lock_data = lmv_set_lock_data,
3345 .m_lock_match = lmv_lock_match,
3346 .m_get_lustre_md = lmv_get_lustre_md,
3347 .m_free_lustre_md = lmv_free_lustre_md,
3348 .m_merge_attr = lmv_merge_attr,
3349 .m_set_open_replay_data = lmv_set_open_replay_data,
3350 .m_clear_open_replay_data = lmv_clear_open_replay_data,
3351 .m_get_remote_perm = lmv_get_remote_perm,
3352 .m_intent_getattr_async = lmv_intent_getattr_async,
3353 .m_revalidate_lock = lmv_revalidate_lock,
3354 .m_get_fid_from_lsm = lmv_get_fid_from_lsm,
3355 .m_unpackmd = lmv_unpackmd,
3358 static int __init lmv_init(void)
3360 return class_register_type(&lmv_obd_ops, &lmv_md_ops, true, NULL,
3361 LUSTRE_LMV_NAME, NULL);
3364 static void __exit lmv_exit(void)
3366 class_unregister_type(LUSTRE_LMV_NAME);
3369 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
3370 MODULE_DESCRIPTION("Lustre Logical Metadata Volume");
3371 MODULE_VERSION(LUSTRE_VERSION_STRING);
3372 MODULE_LICENSE("GPL");
3374 module_init(lmv_init);
3375 module_exit(lmv_exit);