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 (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid))
792 static void lmv_hsm_req_build(struct lmv_obd *lmv,
793 struct hsm_user_request *hur_in,
794 const struct lmv_tgt_desc *tgt_mds,
795 struct hsm_user_request *hur_out)
798 struct lmv_tgt_desc *curr_tgt;
800 /* build the hsm_user_request for the given target */
801 hur_out->hur_request = hur_in->hur_request;
803 for (i = 0; i < hur_in->hur_request.hr_itemcount; i++) {
804 curr_tgt = lmv_find_target(lmv,
805 &hur_in->hur_user_item[i].hui_fid);
806 if (obd_uuid_equals(&curr_tgt->ltd_uuid, &tgt_mds->ltd_uuid)) {
807 hur_out->hur_user_item[nr_out] =
808 hur_in->hur_user_item[i];
812 hur_out->hur_request.hr_itemcount = nr_out;
813 memcpy(hur_data(hur_out), hur_data(hur_in),
814 hur_in->hur_request.hr_data_len);
817 static int lmv_hsm_ct_unregister(struct lmv_obd *lmv, unsigned int cmd, int len,
818 struct lustre_kernelcomm *lk,
825 /* unregister request (call from llapi_hsm_copytool_fini) */
826 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
827 struct lmv_tgt_desc *tgt = lmv->tgts[i];
829 if (tgt == NULL || tgt->ltd_exp == NULL)
831 /* best effort: try to clean as much as possible
832 * (continue on error) */
833 obd_iocontrol(cmd, tgt->ltd_exp, len, lk, uarg);
836 /* Whatever the result, remove copytool from kuc groups.
837 * Unreached coordinators will get EPIPE on next requests
838 * and will unregister automatically.
840 rc = libcfs_kkuc_group_rem(lk->lk_uid, lk->lk_group);
845 static int lmv_hsm_ct_register(struct lmv_obd *lmv, unsigned int cmd, int len,
846 struct lustre_kernelcomm *lk, __user void *uarg)
851 bool any_set = false;
852 struct kkuc_ct_data kcd = { 0 };
855 /* All or nothing: try to register to all MDS.
856 * In case of failure, unregister from previous MDS,
857 * except if it because of inactive target. */
858 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
859 struct lmv_tgt_desc *tgt = lmv->tgts[i];
861 if (tgt == NULL || tgt->ltd_exp == NULL)
863 err = obd_iocontrol(cmd, tgt->ltd_exp, len, lk, uarg);
865 if (tgt->ltd_active) {
866 /* permanent error */
867 CERROR("%s: iocontrol MDC %s on MDT"
868 " idx %d cmd %x: err = %d\n",
869 class_exp2obd(lmv->exp)->obd_name,
870 tgt->ltd_uuid.uuid, i, cmd, err);
872 lk->lk_flags |= LK_FLG_STOP;
873 /* unregister from previous MDS */
874 for (j = 0; j < i; j++) {
876 if (tgt == NULL || tgt->ltd_exp == NULL)
878 obd_iocontrol(cmd, tgt->ltd_exp, len,
883 /* else: transient error.
884 * kuc will register to the missing MDT
892 /* no registration done: return error */
895 /* at least one registration done, with no failure */
896 filp = fget(lk->lk_wfd);
900 kcd.kcd_magic = KKUC_CT_DATA_MAGIC;
901 kcd.kcd_uuid = lmv->cluuid;
902 kcd.kcd_archive = lk->lk_data;
904 rc = libcfs_kkuc_group_add(filp, lk->lk_uid, lk->lk_group,
915 static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp,
916 int len, void *karg, void __user *uarg)
918 struct obd_device *obddev = class_exp2obd(exp);
919 struct lmv_obd *lmv = &obddev->u.lmv;
920 struct lmv_tgt_desc *tgt = NULL;
924 __u32 count = lmv->desc.ld_tgt_count;
931 case IOC_OBD_STATFS: {
932 struct obd_ioctl_data *data = karg;
933 struct obd_device *mdc_obd;
934 struct obd_statfs stat_buf = {0};
937 memcpy(&index, data->ioc_inlbuf2, sizeof(__u32));
938 if ((index >= count))
941 tgt = lmv->tgts[index];
942 if (tgt == NULL || !tgt->ltd_active)
945 mdc_obd = class_exp2obd(tgt->ltd_exp);
950 if (copy_to_user(data->ioc_pbuf2, obd2cli_tgt(mdc_obd),
951 min((int) data->ioc_plen2,
952 (int) sizeof(struct obd_uuid))))
955 rc = obd_statfs(NULL, tgt->ltd_exp, &stat_buf,
956 cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
960 if (copy_to_user(data->ioc_pbuf1, &stat_buf,
961 min((int) data->ioc_plen1,
962 (int) sizeof(stat_buf))))
966 case OBD_IOC_QUOTACTL: {
967 struct if_quotactl *qctl = karg;
968 struct obd_quotactl *oqctl;
970 if (qctl->qc_valid == QC_MDTIDX) {
971 if (count <= qctl->qc_idx)
974 tgt = lmv->tgts[qctl->qc_idx];
975 if (tgt == NULL || tgt->ltd_exp == NULL)
977 } else if (qctl->qc_valid == QC_UUID) {
978 for (i = 0; i < count; i++) {
982 if (!obd_uuid_equals(&tgt->ltd_uuid,
986 if (tgt->ltd_exp == NULL)
998 LASSERT(tgt != NULL && tgt->ltd_exp != NULL);
999 OBD_ALLOC_PTR(oqctl);
1003 QCTL_COPY(oqctl, qctl);
1004 rc = obd_quotactl(tgt->ltd_exp, oqctl);
1006 QCTL_COPY(qctl, oqctl);
1007 qctl->qc_valid = QC_MDTIDX;
1008 qctl->obd_uuid = tgt->ltd_uuid;
1010 OBD_FREE_PTR(oqctl);
1013 case OBD_IOC_CHANGELOG_SEND:
1014 case OBD_IOC_CHANGELOG_CLEAR: {
1015 struct ioc_changelog *icc = karg;
1017 if (icc->icc_mdtindex >= count)
1020 tgt = lmv->tgts[icc->icc_mdtindex];
1021 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
1023 rc = obd_iocontrol(cmd, tgt->ltd_exp, sizeof(*icc), icc, NULL);
1026 case LL_IOC_GET_CONNECT_FLAGS: {
1028 if (tgt == NULL || tgt->ltd_exp == NULL)
1030 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1033 case LL_IOC_FID2MDTIDX: {
1034 struct lu_fid *fid = karg;
1037 rc = lmv_fld_lookup(lmv, fid, &mdt_index);
1041 /* Note: this is from llite(see ll_dir_ioctl()), @uarg does not
1042 * point to user space memory for FID2MDTIDX. */
1043 *(__u32 *)uarg = mdt_index;
1046 case OBD_IOC_FID2PATH: {
1047 rc = lmv_fid2path(exp, len, karg, uarg);
1050 case LL_IOC_HSM_STATE_GET:
1051 case LL_IOC_HSM_STATE_SET:
1052 case LL_IOC_HSM_ACTION: {
1053 struct md_op_data *op_data = karg;
1055 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1057 RETURN(PTR_ERR(tgt));
1059 if (tgt->ltd_exp == NULL)
1062 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1065 case LL_IOC_HSM_PROGRESS: {
1066 const struct hsm_progress_kernel *hpk = karg;
1068 tgt = lmv_find_target(lmv, &hpk->hpk_fid);
1070 RETURN(PTR_ERR(tgt));
1071 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1074 case LL_IOC_HSM_REQUEST: {
1075 struct hsm_user_request *hur = karg;
1076 unsigned int reqcount = hur->hur_request.hr_itemcount;
1081 /* if the request is about a single fid
1082 * or if there is a single MDS, no need to split
1084 if (reqcount == 1 || count == 1) {
1085 tgt = lmv_find_target(lmv,
1086 &hur->hur_user_item[0].hui_fid);
1088 RETURN(PTR_ERR(tgt));
1089 rc = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1091 /* split fid list to their respective MDS */
1092 for (i = 0; i < count; i++) {
1093 unsigned int nr, reqlen;
1095 struct hsm_user_request *req;
1098 if (tgt == NULL || tgt->ltd_exp == NULL)
1101 nr = lmv_hsm_req_count(lmv, hur, tgt);
1102 if (nr == 0) /* nothing for this MDS */
1105 /* build a request with fids for this MDS */
1106 reqlen = offsetof(typeof(*hur),
1108 + hur->hur_request.hr_data_len;
1109 OBD_ALLOC_LARGE(req, reqlen);
1113 lmv_hsm_req_build(lmv, hur, tgt, req);
1115 rc1 = obd_iocontrol(cmd, tgt->ltd_exp, reqlen,
1117 if (rc1 != 0 && rc == 0)
1119 OBD_FREE_LARGE(req, reqlen);
1124 case LL_IOC_LOV_SWAP_LAYOUTS: {
1125 struct md_op_data *op_data = karg;
1126 struct lmv_tgt_desc *tgt1, *tgt2;
1128 tgt1 = lmv_find_target(lmv, &op_data->op_fid1);
1130 RETURN(PTR_ERR(tgt1));
1132 tgt2 = lmv_find_target(lmv, &op_data->op_fid2);
1134 RETURN(PTR_ERR(tgt2));
1136 if ((tgt1->ltd_exp == NULL) || (tgt2->ltd_exp == NULL))
1139 /* only files on same MDT can have their layouts swapped */
1140 if (tgt1->ltd_idx != tgt2->ltd_idx)
1143 rc = obd_iocontrol(cmd, tgt1->ltd_exp, len, karg, uarg);
1146 case LL_IOC_HSM_CT_START: {
1147 struct lustre_kernelcomm *lk = karg;
1148 if (lk->lk_flags & LK_FLG_STOP)
1149 rc = lmv_hsm_ct_unregister(lmv, cmd, len, lk, uarg);
1151 rc = lmv_hsm_ct_register(lmv, cmd, len, lk, uarg);
1155 for (i = 0; i < count; i++) {
1156 struct obd_device *mdc_obd;
1160 if (tgt == NULL || tgt->ltd_exp == NULL)
1162 /* ll_umount_begin() sets force flag but for lmv, not
1163 * mdc. Let's pass it through */
1164 mdc_obd = class_exp2obd(tgt->ltd_exp);
1165 mdc_obd->obd_force = obddev->obd_force;
1166 err = obd_iocontrol(cmd, tgt->ltd_exp, len, karg, uarg);
1168 if (tgt->ltd_active) {
1169 CERROR("error: iocontrol MDC %s on MDT"
1170 " idx %d cmd %x: err = %d\n",
1171 tgt->ltd_uuid.uuid, i, cmd, err);
1185 static int lmv_all_chars_policy(int count, const char *name,
1196 static int lmv_nid_policy(struct lmv_obd *lmv)
1198 struct obd_import *imp;
1202 * XXX: To get nid we assume that underlying obd device is mdc.
1204 imp = class_exp2cliimp(lmv->tgts[0].ltd_exp);
1205 id = imp->imp_connection->c_self ^ (imp->imp_connection->c_self >> 32);
1206 return id % lmv->desc.ld_tgt_count;
1209 static int lmv_choose_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
1210 placement_policy_t placement)
1212 switch (placement) {
1213 case PLACEMENT_CHAR_POLICY:
1214 return lmv_all_chars_policy(lmv->desc.ld_tgt_count,
1216 op_data->op_namelen);
1217 case PLACEMENT_NID_POLICY:
1218 return lmv_nid_policy(lmv);
1224 CERROR("Unsupported placement policy %x\n", placement);
1230 * This is _inode_ placement policy function (not name).
1232 static int lmv_placement_policy(struct obd_device *obd,
1233 struct md_op_data *op_data, u32 *mds)
1235 struct lmv_obd *lmv = &obd->u.lmv;
1238 LASSERT(mds != NULL);
1240 if (lmv->desc.ld_tgt_count == 1) {
1245 if (op_data->op_default_stripe_offset != -1) {
1246 *mds = op_data->op_default_stripe_offset;
1251 * If stripe_offset is provided during setdirstripe
1252 * (setdirstripe -i xx), xx MDS will be choosen.
1254 if (op_data->op_cli_flags & CLI_SET_MEA && op_data->op_data != NULL) {
1255 struct lmv_user_md *lum;
1257 lum = op_data->op_data;
1259 if (le32_to_cpu(lum->lum_stripe_offset) != (__u32)-1) {
1260 *mds = le32_to_cpu(lum->lum_stripe_offset);
1262 /* -1 means default, which will be in the same MDT with
1264 *mds = op_data->op_mds;
1265 lum->lum_stripe_offset = cpu_to_le32(op_data->op_mds);
1268 /* Allocate new fid on target according to operation type and
1269 * parent home mds. */
1270 *mds = op_data->op_mds;
1276 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds)
1278 struct lmv_tgt_desc *tgt;
1282 tgt = lmv_get_target(lmv, mds, NULL);
1284 RETURN(PTR_ERR(tgt));
1287 * New seq alloc and FLD setup should be atomic. Otherwise we may find
1288 * on server that seq in new allocated fid is not yet known.
1290 mutex_lock(&tgt->ltd_fid_mutex);
1292 if (tgt->ltd_active == 0 || tgt->ltd_exp == NULL)
1293 GOTO(out, rc = -ENODEV);
1296 * Asking underlying tgt layer to allocate new fid.
1298 rc = obd_fid_alloc(NULL, tgt->ltd_exp, fid, NULL);
1300 LASSERT(fid_is_sane(fid));
1306 mutex_unlock(&tgt->ltd_fid_mutex);
1310 int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp,
1311 struct lu_fid *fid, struct md_op_data *op_data)
1313 struct obd_device *obd = class_exp2obd(exp);
1314 struct lmv_obd *lmv = &obd->u.lmv;
1319 LASSERT(op_data != NULL);
1320 LASSERT(fid != NULL);
1322 rc = lmv_placement_policy(obd, op_data, &mds);
1324 CERROR("Can't get target for allocating fid, "
1329 rc = __lmv_fid_alloc(lmv, fid, mds);
1331 CERROR("Can't alloc new fid, rc %d\n", rc);
1338 static int lmv_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
1340 struct lmv_obd *lmv = &obd->u.lmv;
1341 struct lmv_desc *desc;
1345 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
1346 CERROR("LMV setup requires a descriptor\n");
1350 desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1);
1351 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
1352 CERROR("Lmv descriptor size wrong: %d > %d\n",
1353 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
1357 lmv->tgts_size = 32U;
1358 OBD_ALLOC(lmv->tgts, sizeof(*lmv->tgts) * lmv->tgts_size);
1359 if (lmv->tgts == NULL)
1362 obd_str2uuid(&lmv->desc.ld_uuid, desc->ld_uuid.uuid);
1363 lmv->desc.ld_tgt_count = 0;
1364 lmv->desc.ld_active_tgt_count = 0;
1365 lmv->max_def_easize = 0;
1366 lmv->max_easize = 0;
1367 lmv->lmv_placement = PLACEMENT_CHAR_POLICY;
1369 spin_lock_init(&lmv->lmv_lock);
1370 mutex_init(&lmv->lmv_init_mutex);
1372 #ifdef CONFIG_PROC_FS
1373 obd->obd_vars = lprocfs_lmv_obd_vars;
1374 lprocfs_obd_setup(obd);
1375 lprocfs_alloc_md_stats(obd, 0);
1376 rc = lprocfs_seq_create(obd->obd_proc_entry, "target_obd",
1377 0444, &lmv_proc_target_fops, obd);
1379 CWARN("%s: error adding LMV target_obd file: rc = %d\n",
1382 rc = fld_client_init(&lmv->lmv_fld, obd->obd_name,
1383 LUSTRE_CLI_FLD_HASH_DHT);
1385 CERROR("Can't init FLD, err %d\n", rc);
1395 static int lmv_cleanup(struct obd_device *obd)
1397 struct lmv_obd *lmv = &obd->u.lmv;
1400 fld_client_fini(&lmv->lmv_fld);
1401 if (lmv->tgts != NULL) {
1403 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1404 if (lmv->tgts[i] == NULL)
1406 lmv_del_target(lmv, i);
1408 OBD_FREE(lmv->tgts, sizeof(*lmv->tgts) * lmv->tgts_size);
1414 static int lmv_process_config(struct obd_device *obd, size_t len, void *buf)
1416 struct lustre_cfg *lcfg = buf;
1417 struct obd_uuid obd_uuid;
1423 switch (lcfg->lcfg_command) {
1425 /* modify_mdc_tgts add 0:lustre-clilmv 1:lustre-MDT0000_UUID
1426 * 2:0 3:1 4:lustre-MDT0000-mdc_UUID */
1427 if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(obd_uuid.uuid))
1428 GOTO(out, rc = -EINVAL);
1430 obd_str2uuid(&obd_uuid, lustre_cfg_buf(lcfg, 1));
1432 if (sscanf(lustre_cfg_buf(lcfg, 2), "%u", &index) != 1)
1433 GOTO(out, rc = -EINVAL);
1434 if (sscanf(lustre_cfg_buf(lcfg, 3), "%d", &gen) != 1)
1435 GOTO(out, rc = -EINVAL);
1436 rc = lmv_add_target(obd, &obd_uuid, index, gen);
1439 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1440 GOTO(out, rc = -EINVAL);
1446 static int lmv_statfs(const struct lu_env *env, struct obd_export *exp,
1447 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
1449 struct obd_device *obd = class_exp2obd(exp);
1450 struct lmv_obd *lmv = &obd->u.lmv;
1451 struct obd_statfs *temp;
1456 rc = lmv_check_connect(obd);
1460 OBD_ALLOC(temp, sizeof(*temp));
1464 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1465 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1468 rc = obd_statfs(env, lmv->tgts[i]->ltd_exp, temp,
1471 CERROR("can't stat MDS #%d (%s), error %d\n", i,
1472 lmv->tgts[i]->ltd_exp->exp_obd->obd_name,
1474 GOTO(out_free_temp, rc);
1479 /* If the statfs is from mount, it will needs
1480 * retrieve necessary information from MDT0.
1481 * i.e. mount does not need the merged osfs
1483 * And also clients can be mounted as long as
1484 * MDT0 is in service*/
1485 if (flags & OBD_STATFS_FOR_MDT0)
1486 GOTO(out_free_temp, rc);
1488 osfs->os_bavail += temp->os_bavail;
1489 osfs->os_blocks += temp->os_blocks;
1490 osfs->os_ffree += temp->os_ffree;
1491 osfs->os_files += temp->os_files;
1497 OBD_FREE(temp, sizeof(*temp));
1501 static int lmv_get_root(struct obd_export *exp, const char *fileset,
1504 struct obd_device *obd = exp->exp_obd;
1505 struct lmv_obd *lmv = &obd->u.lmv;
1509 rc = lmv_check_connect(obd);
1513 rc = md_get_root(lmv->tgts[0]->ltd_exp, fileset, fid);
1517 static int lmv_getxattr(struct obd_export *exp, const struct lu_fid *fid,
1518 u64 valid, const char *name,
1519 const char *input, int input_size, int output_size,
1520 int flags, struct ptlrpc_request **request)
1522 struct obd_device *obd = exp->exp_obd;
1523 struct lmv_obd *lmv = &obd->u.lmv;
1524 struct lmv_tgt_desc *tgt;
1528 rc = lmv_check_connect(obd);
1532 tgt = lmv_find_target(lmv, fid);
1534 RETURN(PTR_ERR(tgt));
1536 rc = md_getxattr(tgt->ltd_exp, fid, valid, name, input,
1537 input_size, output_size, flags, request);
1542 static int lmv_setxattr(struct obd_export *exp, const struct lu_fid *fid,
1543 u64 valid, const char *name,
1544 const char *input, int input_size, int output_size,
1545 int flags, __u32 suppgid,
1546 struct ptlrpc_request **request)
1548 struct obd_device *obd = exp->exp_obd;
1549 struct lmv_obd *lmv = &obd->u.lmv;
1550 struct lmv_tgt_desc *tgt;
1554 rc = lmv_check_connect(obd);
1558 tgt = lmv_find_target(lmv, fid);
1560 RETURN(PTR_ERR(tgt));
1562 rc = md_setxattr(tgt->ltd_exp, fid, valid, name, input,
1563 input_size, output_size, flags, suppgid,
1569 static int lmv_getattr(struct obd_export *exp, struct md_op_data *op_data,
1570 struct ptlrpc_request **request)
1572 struct obd_device *obd = exp->exp_obd;
1573 struct lmv_obd *lmv = &obd->u.lmv;
1574 struct lmv_tgt_desc *tgt;
1578 rc = lmv_check_connect(obd);
1582 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1584 RETURN(PTR_ERR(tgt));
1586 if (op_data->op_flags & MF_GET_MDT_IDX) {
1587 op_data->op_mds = tgt->ltd_idx;
1591 rc = md_getattr(tgt->ltd_exp, op_data, request);
1596 static int lmv_null_inode(struct obd_export *exp, const struct lu_fid *fid)
1598 struct obd_device *obd = exp->exp_obd;
1599 struct lmv_obd *lmv = &obd->u.lmv;
1604 rc = lmv_check_connect(obd);
1608 CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid));
1611 * With DNE every object can have two locks in different namespaces:
1612 * lookup lock in space of MDT storing direntry and update/open lock in
1613 * space of MDT storing inode.
1615 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1616 if (lmv->tgts[i] == NULL || lmv->tgts[i]->ltd_exp == NULL)
1618 md_null_inode(lmv->tgts[i]->ltd_exp, fid);
1624 static int lmv_close(struct obd_export *exp, struct md_op_data *op_data,
1625 struct md_open_data *mod, struct ptlrpc_request **request)
1627 struct obd_device *obd = exp->exp_obd;
1628 struct lmv_obd *lmv = &obd->u.lmv;
1629 struct lmv_tgt_desc *tgt;
1633 rc = lmv_check_connect(obd);
1637 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1639 RETURN(PTR_ERR(tgt));
1641 CDEBUG(D_INODE, "CLOSE "DFID"\n", PFID(&op_data->op_fid1));
1642 rc = md_close(tgt->ltd_exp, op_data, mod, request);
1647 * Choosing the MDT by name or FID in @op_data.
1648 * For non-striped directory, it will locate MDT by fid.
1649 * For striped-directory, it will locate MDT by name. And also
1650 * it will reset op_fid1 with the FID of the choosen stripe.
1652 struct lmv_tgt_desc *
1653 lmv_locate_target_for_name(struct lmv_obd *lmv, struct lmv_stripe_md *lsm,
1654 const char *name, int namelen, struct lu_fid *fid,
1657 struct lmv_tgt_desc *tgt;
1658 const struct lmv_oinfo *oinfo;
1660 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_NAME_HASH)) {
1661 if (cfs_fail_val >= lsm->lsm_md_stripe_count)
1662 RETURN(ERR_PTR(-EBADF));
1663 oinfo = &lsm->lsm_md_oinfo[cfs_fail_val];
1665 oinfo = lsm_name_to_stripe_info(lsm, name, namelen);
1667 RETURN(ERR_CAST(oinfo));
1671 *fid = oinfo->lmo_fid;
1673 *mds = oinfo->lmo_mds;
1675 tgt = lmv_get_target(lmv, oinfo->lmo_mds, NULL);
1677 CDEBUG(D_INFO, "locate on mds %u "DFID"\n", oinfo->lmo_mds,
1678 PFID(&oinfo->lmo_fid));
1683 * Locate mds by fid or name
1685 * For striped directory (lsm != NULL), it will locate the stripe
1686 * by name hash (see lsm_name_to_stripe_info()). Note: if the hash_type
1687 * is unknown, it will return -EBADFD, and lmv_intent_lookup might need
1688 * walk through all of stripes to locate the entry.
1690 * For normal direcotry, it will locate MDS by FID directly.
1691 * \param[in] lmv LMV device
1692 * \param[in] op_data client MD stack parameters, name, namelen
1694 * \param[in] fid object FID used to locate MDS.
1696 * retval pointer to the lmv_tgt_desc if succeed.
1697 * ERR_PTR(errno) if failed.
1699 struct lmv_tgt_desc*
1700 lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
1703 struct lmv_stripe_md *lsm = op_data->op_mea1;
1704 struct lmv_tgt_desc *tgt;
1706 /* During creating VOLATILE file, it should honor the mdt
1707 * index if the file under striped dir is being restored, see
1709 if (op_data->op_bias & MDS_CREATE_VOLATILE &&
1710 (int)op_data->op_mds != -1) {
1712 tgt = lmv_get_target(lmv, op_data->op_mds, NULL);
1717 /* refill the right parent fid */
1718 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
1719 struct lmv_oinfo *oinfo;
1721 oinfo = &lsm->lsm_md_oinfo[i];
1722 if (oinfo->lmo_mds == op_data->op_mds) {
1723 *fid = oinfo->lmo_fid;
1728 if (i == lsm->lsm_md_stripe_count)
1729 *fid = lsm->lsm_md_oinfo[0].lmo_fid;
1735 if (lsm == NULL || op_data->op_namelen == 0) {
1736 tgt = lmv_find_target(lmv, fid);
1740 op_data->op_mds = tgt->ltd_idx;
1744 return lmv_locate_target_for_name(lmv, lsm, op_data->op_name,
1745 op_data->op_namelen, fid,
1749 int lmv_create(struct obd_export *exp, struct md_op_data *op_data,
1750 const void *data, size_t datalen, umode_t mode, uid_t uid,
1751 gid_t gid, cfs_cap_t cap_effective, __u64 rdev,
1752 struct ptlrpc_request **request)
1754 struct obd_device *obd = exp->exp_obd;
1755 struct lmv_obd *lmv = &obd->u.lmv;
1756 struct lmv_tgt_desc *tgt;
1760 rc = lmv_check_connect(obd);
1764 if (!lmv->desc.ld_active_tgt_count)
1767 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1769 RETURN(PTR_ERR(tgt));
1771 CDEBUG(D_INODE, "CREATE name '%.*s' on "DFID" -> mds #%x\n",
1772 (int)op_data->op_namelen, op_data->op_name,
1773 PFID(&op_data->op_fid1), op_data->op_mds);
1775 rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
1778 if (exp_connect_flags(exp) & OBD_CONNECT_DIR_STRIPE) {
1779 /* Send the create request to the MDT where the object
1780 * will be located */
1781 tgt = lmv_find_target(lmv, &op_data->op_fid2);
1783 RETURN(PTR_ERR(tgt));
1785 op_data->op_mds = tgt->ltd_idx;
1787 CDEBUG(D_CONFIG, "Server doesn't support striped dirs\n");
1790 CDEBUG(D_INODE, "CREATE obj "DFID" -> mds #%x\n",
1791 PFID(&op_data->op_fid2), op_data->op_mds);
1793 op_data->op_flags |= MF_MDC_CANCEL_FID1;
1794 rc = md_create(tgt->ltd_exp, op_data, data, datalen, mode, uid, gid,
1795 cap_effective, rdev, request);
1797 if (*request == NULL)
1799 CDEBUG(D_INODE, "Created - "DFID"\n", PFID(&op_data->op_fid2));
1805 lmv_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
1806 const union ldlm_policy_data *policy,
1807 struct lookup_intent *it, struct md_op_data *op_data,
1808 struct lustre_handle *lockh, __u64 extra_lock_flags)
1810 struct obd_device *obd = exp->exp_obd;
1811 struct lmv_obd *lmv = &obd->u.lmv;
1812 struct lmv_tgt_desc *tgt;
1816 rc = lmv_check_connect(obd);
1820 CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID"\n",
1821 LL_IT2STR(it), PFID(&op_data->op_fid1));
1823 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1825 RETURN(PTR_ERR(tgt));
1827 CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID" -> mds #%u\n",
1828 LL_IT2STR(it), PFID(&op_data->op_fid1), tgt->ltd_idx);
1830 rc = md_enqueue(tgt->ltd_exp, einfo, policy, it, op_data, lockh,
1837 lmv_getattr_name(struct obd_export *exp,struct md_op_data *op_data,
1838 struct ptlrpc_request **preq)
1840 struct ptlrpc_request *req = NULL;
1841 struct obd_device *obd = exp->exp_obd;
1842 struct lmv_obd *lmv = &obd->u.lmv;
1843 struct lmv_tgt_desc *tgt;
1844 struct mdt_body *body;
1848 rc = lmv_check_connect(obd);
1852 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
1854 RETURN(PTR_ERR(tgt));
1856 CDEBUG(D_INODE, "GETATTR_NAME for %*s on "DFID" -> mds #%d\n",
1857 (int)op_data->op_namelen, op_data->op_name,
1858 PFID(&op_data->op_fid1), tgt->ltd_idx);
1860 rc = md_getattr_name(tgt->ltd_exp, op_data, preq);
1864 body = req_capsule_server_get(&(*preq)->rq_pill, &RMF_MDT_BODY);
1865 LASSERT(body != NULL);
1867 if (body->mbo_valid & OBD_MD_MDS) {
1868 struct lu_fid rid = body->mbo_fid1;
1869 CDEBUG(D_INODE, "Request attrs for "DFID"\n",
1872 tgt = lmv_find_target(lmv, &rid);
1874 ptlrpc_req_finished(*preq);
1876 RETURN(PTR_ERR(tgt));
1879 op_data->op_fid1 = rid;
1880 op_data->op_valid |= OBD_MD_FLCROSSREF;
1881 op_data->op_namelen = 0;
1882 op_data->op_name = NULL;
1883 rc = md_getattr_name(tgt->ltd_exp, op_data, &req);
1884 ptlrpc_req_finished(*preq);
1891 #define md_op_data_fid(op_data, fl) \
1892 (fl == MF_MDC_CANCEL_FID1 ? &op_data->op_fid1 : \
1893 fl == MF_MDC_CANCEL_FID2 ? &op_data->op_fid2 : \
1894 fl == MF_MDC_CANCEL_FID3 ? &op_data->op_fid3 : \
1895 fl == MF_MDC_CANCEL_FID4 ? &op_data->op_fid4 : \
1898 static int lmv_early_cancel(struct obd_export *exp, struct lmv_tgt_desc *tgt,
1899 struct md_op_data *op_data, __u32 op_tgt,
1900 enum ldlm_mode mode, int bits, int flag)
1902 struct lu_fid *fid = md_op_data_fid(op_data, flag);
1903 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
1904 union ldlm_policy_data policy = { { 0 } };
1908 if (!fid_is_sane(fid))
1912 tgt = lmv_find_target(lmv, fid);
1914 RETURN(PTR_ERR(tgt));
1917 if (tgt->ltd_idx != op_tgt) {
1918 CDEBUG(D_INODE, "EARLY_CANCEL on "DFID"\n", PFID(fid));
1919 policy.l_inodebits.bits = bits;
1920 rc = md_cancel_unused(tgt->ltd_exp, fid, &policy,
1921 mode, LCF_ASYNC, NULL);
1924 "EARLY_CANCEL skip operation target %d on "DFID"\n",
1926 op_data->op_flags |= flag;
1934 * llite passes fid of an target inode in op_data->op_fid1 and id of directory in
1937 static int lmv_link(struct obd_export *exp, struct md_op_data *op_data,
1938 struct ptlrpc_request **request)
1940 struct obd_device *obd = exp->exp_obd;
1941 struct lmv_obd *lmv = &obd->u.lmv;
1942 struct lmv_tgt_desc *tgt;
1946 rc = lmv_check_connect(obd);
1950 LASSERT(op_data->op_namelen != 0);
1952 CDEBUG(D_INODE, "LINK "DFID":%*s to "DFID"\n",
1953 PFID(&op_data->op_fid2), (int)op_data->op_namelen,
1954 op_data->op_name, PFID(&op_data->op_fid1));
1956 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
1957 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
1958 op_data->op_cap = cfs_curproc_cap_pack();
1959 if (op_data->op_mea2 != NULL) {
1960 struct lmv_stripe_md *lsm = op_data->op_mea2;
1961 const struct lmv_oinfo *oinfo;
1963 oinfo = lsm_name_to_stripe_info(lsm, op_data->op_name,
1964 op_data->op_namelen);
1966 RETURN(PTR_ERR(oinfo));
1968 op_data->op_fid2 = oinfo->lmo_fid;
1971 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
1973 RETURN(PTR_ERR(tgt));
1976 * Cancel UPDATE lock on child (fid1).
1978 op_data->op_flags |= MF_MDC_CANCEL_FID2;
1979 rc = lmv_early_cancel(exp, NULL, op_data, tgt->ltd_idx, LCK_EX,
1980 MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1);
1984 rc = md_link(tgt->ltd_exp, op_data, request);
1989 static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data,
1990 const char *old, size_t oldlen,
1991 const char *new, size_t newlen,
1992 struct ptlrpc_request **request)
1994 struct obd_device *obd = exp->exp_obd;
1995 struct lmv_obd *lmv = &obd->u.lmv;
1996 struct lmv_tgt_desc *src_tgt;
1997 struct lmv_tgt_desc *tgt_tgt;
1998 struct obd_export *target_exp;
1999 struct mdt_body *body;
2003 LASSERT(oldlen != 0);
2005 CDEBUG(D_INODE, "RENAME %.*s in "DFID":%d to %.*s in "DFID":%d\n",
2006 (int)oldlen, old, PFID(&op_data->op_fid1),
2007 op_data->op_mea1 ? op_data->op_mea1->lsm_md_stripe_count : 0,
2008 (int)newlen, new, PFID(&op_data->op_fid2),
2009 op_data->op_mea2 ? op_data->op_mea2->lsm_md_stripe_count : 0);
2011 rc = lmv_check_connect(obd);
2015 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2016 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2017 op_data->op_cap = cfs_curproc_cap_pack();
2018 if (op_data->op_cli_flags & CLI_MIGRATE) {
2019 LASSERTF(fid_is_sane(&op_data->op_fid3), "invalid FID "DFID"\n",
2020 PFID(&op_data->op_fid3));
2022 if (op_data->op_mea1 != NULL) {
2023 struct lmv_stripe_md *lsm = op_data->op_mea1;
2024 struct lmv_tgt_desc *tmp;
2026 /* Fix the parent fid for striped dir */
2027 tmp = lmv_locate_target_for_name(lmv, lsm, old,
2032 RETURN(PTR_ERR(tmp));
2035 rc = lmv_fid_alloc(NULL, exp, &op_data->op_fid2, op_data);
2039 src_tgt = lmv_find_target(lmv, &op_data->op_fid3);
2040 if (IS_ERR(src_tgt))
2041 RETURN(PTR_ERR(src_tgt));
2043 target_exp = src_tgt->ltd_exp;
2045 if (op_data->op_mea1 != NULL) {
2046 struct lmv_stripe_md *lsm = op_data->op_mea1;
2048 src_tgt = lmv_locate_target_for_name(lmv, lsm, old,
2053 src_tgt = lmv_find_target(lmv, &op_data->op_fid1);
2055 if (IS_ERR(src_tgt))
2056 RETURN(PTR_ERR(src_tgt));
2059 if (op_data->op_mea2 != NULL) {
2060 struct lmv_stripe_md *lsm = op_data->op_mea2;
2062 tgt_tgt = lmv_locate_target_for_name(lmv, lsm, new,
2067 tgt_tgt = lmv_find_target(lmv, &op_data->op_fid2);
2070 if (IS_ERR(tgt_tgt))
2071 RETURN(PTR_ERR(tgt_tgt));
2073 target_exp = tgt_tgt->ltd_exp;
2077 * LOOKUP lock on src child (fid3) should also be cancelled for
2078 * src_tgt in mdc_rename.
2080 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
2083 * Cancel UPDATE locks on tgt parent (fid2), tgt_tgt is its
2086 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
2087 LCK_EX, MDS_INODELOCK_UPDATE,
2088 MF_MDC_CANCEL_FID2);
2093 * Cancel LOOKUP locks on source child (fid3) for parent tgt_tgt.
2095 if (fid_is_sane(&op_data->op_fid3)) {
2096 struct lmv_tgt_desc *tgt;
2098 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2100 RETURN(PTR_ERR(tgt));
2102 /* Cancel LOOKUP lock on its parent */
2103 rc = lmv_early_cancel(exp, tgt, op_data, src_tgt->ltd_idx,
2104 LCK_EX, MDS_INODELOCK_LOOKUP,
2105 MF_MDC_CANCEL_FID3);
2109 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
2110 LCK_EX, MDS_INODELOCK_FULL,
2111 MF_MDC_CANCEL_FID3);
2118 * Cancel all the locks on tgt child (fid4).
2120 if (fid_is_sane(&op_data->op_fid4)) {
2121 struct lmv_tgt_desc *tgt;
2123 rc = lmv_early_cancel(exp, NULL, op_data, src_tgt->ltd_idx,
2124 LCK_EX, MDS_INODELOCK_FULL,
2125 MF_MDC_CANCEL_FID4);
2129 tgt = lmv_find_target(lmv, &op_data->op_fid4);
2131 RETURN(PTR_ERR(tgt));
2133 /* Since the target child might be destroyed, and it might
2134 * become orphan, and we can only check orphan on the local
2135 * MDT right now, so we send rename request to the MDT where
2136 * target child is located. If target child does not exist,
2137 * then it will send the request to the target parent */
2138 target_exp = tgt->ltd_exp;
2141 rc = md_rename(target_exp, op_data, old, oldlen, new, newlen,
2144 if (rc != 0 && rc != -EXDEV)
2147 body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
2151 /* Not cross-ref case, just get out of here. */
2152 if (likely(!(body->mbo_valid & OBD_MD_MDS)))
2155 CDEBUG(D_INODE, "%s: try rename to another MDT for "DFID"\n",
2156 exp->exp_obd->obd_name, PFID(&body->mbo_fid1));
2158 op_data->op_fid4 = body->mbo_fid1;
2159 ptlrpc_req_finished(*request);
2164 static int lmv_setattr(struct obd_export *exp, struct md_op_data *op_data,
2165 void *ea, size_t ealen, struct ptlrpc_request **request)
2167 struct obd_device *obd = exp->exp_obd;
2168 struct lmv_obd *lmv = &obd->u.lmv;
2169 struct lmv_tgt_desc *tgt;
2173 rc = lmv_check_connect(obd);
2177 CDEBUG(D_INODE, "SETATTR for "DFID", valid 0x%x\n",
2178 PFID(&op_data->op_fid1), op_data->op_attr.ia_valid);
2180 op_data->op_flags |= MF_MDC_CANCEL_FID1;
2181 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2183 RETURN(PTR_ERR(tgt));
2185 rc = md_setattr(tgt->ltd_exp, op_data, ea, ealen, request);
2190 static int lmv_fsync(struct obd_export *exp, const struct lu_fid *fid,
2191 struct ptlrpc_request **request)
2193 struct obd_device *obd = exp->exp_obd;
2194 struct lmv_obd *lmv = &obd->u.lmv;
2195 struct lmv_tgt_desc *tgt;
2199 rc = lmv_check_connect(obd);
2203 tgt = lmv_find_target(lmv, fid);
2205 RETURN(PTR_ERR(tgt));
2207 rc = md_fsync(tgt->ltd_exp, fid, request);
2212 * Get current minimum entry from striped directory
2214 * This function will search the dir entry, whose hash value is the
2215 * closest(>=) to @hash_offset, from all of sub-stripes, and it is
2216 * only being called for striped directory.
2218 * \param[in] exp export of LMV
2219 * \param[in] op_data parameters transferred beween client MD stack
2220 * stripe_information will be included in this
2222 * \param[in] cb_op ldlm callback being used in enqueue in
2224 * \param[in] hash_offset the hash value, which is used to locate
2225 * minum(closet) dir entry
2226 * \param[in|out] stripe_offset the caller use this to indicate the stripe
2227 * index of last entry, so to avoid hash conflict
2228 * between stripes. It will also be used to
2229 * return the stripe index of current dir entry.
2230 * \param[in|out] entp the minum entry and it also is being used
2231 * to input the last dir entry to resolve the
2234 * \param[out] ppage the page which holds the minum entry
2236 * \retval = 0 get the entry successfully
2237 * negative errno (< 0) does not get the entry
2239 static int lmv_get_min_striped_entry(struct obd_export *exp,
2240 struct md_op_data *op_data,
2241 struct md_callback *cb_op,
2242 __u64 hash_offset, int *stripe_offset,
2243 struct lu_dirent **entp,
2244 struct page **ppage)
2246 struct obd_device *obd = exp->exp_obd;
2247 struct lmv_obd *lmv = &obd->u.lmv;
2248 struct lmv_stripe_md *lsm = op_data->op_mea1;
2249 struct lmv_tgt_desc *tgt;
2251 struct lu_dirent *min_ent = NULL;
2252 struct page *min_page = NULL;
2258 stripe_count = lsm->lsm_md_stripe_count;
2259 for (i = 0; i < stripe_count; i++) {
2260 struct lu_dirent *ent = NULL;
2261 struct page *page = NULL;
2262 struct lu_dirpage *dp;
2263 __u64 stripe_hash = hash_offset;
2265 tgt = lmv_get_target(lmv, lsm->lsm_md_oinfo[i].lmo_mds, NULL);
2267 GOTO(out, rc = PTR_ERR(tgt));
2269 /* op_data will be shared by each stripe, so we need
2270 * reset these value for each stripe */
2271 op_data->op_fid1 = lsm->lsm_md_oinfo[i].lmo_fid;
2272 op_data->op_fid2 = lsm->lsm_md_oinfo[i].lmo_fid;
2273 op_data->op_data = lsm->lsm_md_oinfo[i].lmo_root;
2275 rc = md_read_page(tgt->ltd_exp, op_data, cb_op, stripe_hash,
2280 dp = page_address(page);
2281 for (ent = lu_dirent_start(dp); ent != NULL;
2282 ent = lu_dirent_next(ent)) {
2283 /* Skip dummy entry */
2284 if (le16_to_cpu(ent->lde_namelen) == 0)
2287 if (le64_to_cpu(ent->lde_hash) < hash_offset)
2290 if (le64_to_cpu(ent->lde_hash) == hash_offset &&
2291 (*entp == ent || i < *stripe_offset))
2294 /* skip . and .. for other stripes */
2296 (strncmp(ent->lde_name, ".",
2297 le16_to_cpu(ent->lde_namelen)) == 0 ||
2298 strncmp(ent->lde_name, "..",
2299 le16_to_cpu(ent->lde_namelen)) == 0))
2305 stripe_hash = le64_to_cpu(dp->ldp_hash_end);
2308 page_cache_release(page);
2311 /* reach the end of current stripe, go to next stripe */
2312 if (stripe_hash == MDS_DIR_END_OFF)
2318 if (min_ent != NULL) {
2319 if (le64_to_cpu(min_ent->lde_hash) >
2320 le64_to_cpu(ent->lde_hash)) {
2323 page_cache_release(min_page);
2328 page_cache_release(page);
2339 if (*ppage != NULL) {
2341 page_cache_release(*ppage);
2343 *stripe_offset = min_idx;
2350 * Build dir entry page from a striped directory
2352 * This function gets one entry by @offset from a striped directory. It will
2353 * read entries from all of stripes, and choose one closest to the required
2354 * offset(&offset). A few notes
2355 * 1. skip . and .. for non-zero stripes, because there can only have one .
2356 * and .. in a directory.
2357 * 2. op_data will be shared by all of stripes, instead of allocating new
2358 * one, so need to restore before reusing.
2359 * 3. release the entry page if that is not being chosen.
2361 * \param[in] exp obd export refer to LMV
2362 * \param[in] op_data hold those MD parameters of read_entry
2363 * \param[in] cb_op ldlm callback being used in enqueue in mdc_read_entry
2364 * \param[out] ldp the entry being read
2365 * \param[out] ppage the page holding the entry. Note: because the entry
2366 * will be accessed in upper layer, so we need hold the
2367 * page until the usages of entry is finished, see
2368 * ll_dir_entry_next.
2370 * retval =0 if get entry successfully
2371 * <0 cannot get entry
2373 static int lmv_read_striped_page(struct obd_export *exp,
2374 struct md_op_data *op_data,
2375 struct md_callback *cb_op,
2376 __u64 offset, struct page **ppage)
2378 struct obd_device *obd = exp->exp_obd;
2379 struct lu_fid master_fid = op_data->op_fid1;
2380 struct inode *master_inode = op_data->op_data;
2381 __u64 hash_offset = offset;
2382 struct lu_dirpage *dp;
2383 struct page *min_ent_page = NULL;
2384 struct page *ent_page = NULL;
2385 struct lu_dirent *ent;
2388 struct lu_dirent *min_ent = NULL;
2389 struct lu_dirent *last_ent;
2394 rc = lmv_check_connect(obd);
2398 /* Allocate a page and read entries from all of stripes and fill
2399 * the page by hash order */
2400 ent_page = alloc_page(GFP_KERNEL);
2401 if (ent_page == NULL)
2404 /* Initialize the entry page */
2405 dp = kmap(ent_page);
2406 memset(dp, 0, sizeof(*dp));
2407 dp->ldp_hash_start = cpu_to_le64(offset);
2408 dp->ldp_flags |= LDF_COLLIDE;
2411 left_bytes = PAGE_CACHE_SIZE - sizeof(*dp);
2417 /* Find the minum entry from all sub-stripes */
2418 rc = lmv_get_min_striped_entry(exp, op_data, cb_op, hash_offset,
2424 /* If it can not get minum entry, it means it already reaches
2425 * the end of this directory */
2426 if (min_ent == NULL) {
2427 last_ent->lde_reclen = 0;
2428 hash_offset = MDS_DIR_END_OFF;
2432 ent_size = le16_to_cpu(min_ent->lde_reclen);
2434 /* the last entry lde_reclen is 0, but it might not
2435 * the end of this entry of this temporay entry */
2437 ent_size = lu_dirent_calc_size(
2438 le16_to_cpu(min_ent->lde_namelen),
2439 le32_to_cpu(min_ent->lde_attrs));
2440 if (ent_size > left_bytes) {
2441 last_ent->lde_reclen = cpu_to_le16(0);
2442 hash_offset = le64_to_cpu(min_ent->lde_hash);
2446 memcpy(ent, min_ent, ent_size);
2448 /* Replace . with master FID and Replace .. with the parent FID
2449 * of master object */
2450 if (strncmp(ent->lde_name, ".",
2451 le16_to_cpu(ent->lde_namelen)) == 0 &&
2452 le16_to_cpu(ent->lde_namelen) == 1)
2453 fid_cpu_to_le(&ent->lde_fid, &master_fid);
2454 else if (strncmp(ent->lde_name, "..",
2455 le16_to_cpu(ent->lde_namelen)) == 0 &&
2456 le16_to_cpu(ent->lde_namelen) == 2)
2457 fid_cpu_to_le(&ent->lde_fid, &op_data->op_fid3);
2459 left_bytes -= ent_size;
2460 ent->lde_reclen = cpu_to_le16(ent_size);
2462 ent = (void *)ent + ent_size;
2463 hash_offset = le64_to_cpu(min_ent->lde_hash);
2464 if (hash_offset == MDS_DIR_END_OFF) {
2465 last_ent->lde_reclen = 0;
2470 if (min_ent_page != NULL) {
2471 kunmap(min_ent_page);
2472 page_cache_release(min_ent_page);
2475 if (unlikely(rc != 0)) {
2476 __free_page(ent_page);
2480 dp->ldp_flags |= LDF_EMPTY;
2481 dp->ldp_flags = cpu_to_le32(dp->ldp_flags);
2482 dp->ldp_hash_end = cpu_to_le64(hash_offset);
2485 /* We do not want to allocate md_op_data during each
2486 * dir entry reading, so op_data will be shared by every stripe,
2487 * then we need to restore it back to original value before
2488 * return to the upper layer */
2489 op_data->op_fid1 = master_fid;
2490 op_data->op_fid2 = master_fid;
2491 op_data->op_data = master_inode;
2498 int lmv_read_page(struct obd_export *exp, struct md_op_data *op_data,
2499 struct md_callback *cb_op, __u64 offset,
2500 struct page **ppage)
2502 struct obd_device *obd = exp->exp_obd;
2503 struct lmv_obd *lmv = &obd->u.lmv;
2504 struct lmv_stripe_md *lsm = op_data->op_mea1;
2505 struct lmv_tgt_desc *tgt;
2509 rc = lmv_check_connect(obd);
2513 if (unlikely(lsm != NULL)) {
2514 rc = lmv_read_striped_page(exp, op_data, cb_op, offset, ppage);
2518 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2520 RETURN(PTR_ERR(tgt));
2522 rc = md_read_page(tgt->ltd_exp, op_data, cb_op, offset, ppage);
2528 * Unlink a file/directory
2530 * Unlink a file or directory under the parent dir. The unlink request
2531 * usually will be sent to the MDT where the child is located, but if
2532 * the client does not have the child FID then request will be sent to the
2533 * MDT where the parent is located.
2535 * If the parent is a striped directory then it also needs to locate which
2536 * stripe the name of the child is located, and replace the parent FID
2537 * (@op->op_fid1) with the stripe FID. Note: if the stripe is unknown,
2538 * it will walk through all of sub-stripes until the child is being
2541 * \param[in] exp export refer to LMV
2542 * \param[in] op_data different parameters transferred beween client
2543 * MD stacks, name, namelen, FIDs etc.
2544 * op_fid1 is the parent FID, op_fid2 is the child
2546 * \param[out] request point to the request of unlink.
2548 * retval 0 if succeed
2549 * negative errno if failed.
2551 static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data,
2552 struct ptlrpc_request **request)
2554 struct obd_device *obd = exp->exp_obd;
2555 struct lmv_obd *lmv = &obd->u.lmv;
2556 struct lmv_tgt_desc *tgt = NULL;
2557 struct lmv_tgt_desc *parent_tgt = NULL;
2558 struct mdt_body *body;
2560 int stripe_index = 0;
2561 struct lmv_stripe_md *lsm = op_data->op_mea1;
2564 rc = lmv_check_connect(obd);
2568 /* For striped dir, we need to locate the parent as well */
2570 struct lmv_tgt_desc *tmp;
2572 LASSERT(op_data->op_name != NULL &&
2573 op_data->op_namelen != 0);
2575 tmp = lmv_locate_target_for_name(lmv, lsm,
2577 op_data->op_namelen,
2581 /* return -EBADFD means unknown hash type, might
2582 * need try all sub-stripe here */
2583 if (IS_ERR(tmp) && PTR_ERR(tmp) != -EBADFD)
2584 RETURN(PTR_ERR(tmp));
2586 /* Note: both migrating dir and unknown hash dir need to
2587 * try all of sub-stripes, so we need start search the
2588 * name from stripe 0, but migrating dir is already handled
2589 * inside lmv_locate_target_for_name(), so we only check
2590 * unknown hash type directory here */
2591 if (!lmv_is_known_hash_type(lsm->lsm_md_hash_type)) {
2592 struct lmv_oinfo *oinfo;
2594 oinfo = &lsm->lsm_md_oinfo[stripe_index];
2596 op_data->op_fid1 = oinfo->lmo_fid;
2597 op_data->op_mds = oinfo->lmo_mds;
2602 /* Send unlink requests to the MDT where the child is located */
2603 if (likely(!fid_is_zero(&op_data->op_fid2)))
2604 tgt = lmv_find_target(lmv, &op_data->op_fid2);
2605 else if (lsm != NULL)
2606 tgt = lmv_get_target(lmv, op_data->op_mds, NULL);
2608 tgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
2611 RETURN(PTR_ERR(tgt));
2613 op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
2614 op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
2615 op_data->op_cap = cfs_curproc_cap_pack();
2618 * If child's fid is given, cancel unused locks for it if it is from
2619 * another export than parent.
2621 * LOOKUP lock for child (fid3) should also be cancelled on parent
2622 * tgt_tgt in mdc_unlink().
2624 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
2627 * Cancel FULL locks on child (fid3).
2629 parent_tgt = lmv_find_target(lmv, &op_data->op_fid1);
2630 if (IS_ERR(parent_tgt))
2631 RETURN(PTR_ERR(parent_tgt));
2633 if (parent_tgt != tgt) {
2634 rc = lmv_early_cancel(exp, parent_tgt, op_data, tgt->ltd_idx,
2635 LCK_EX, MDS_INODELOCK_LOOKUP,
2636 MF_MDC_CANCEL_FID3);
2639 rc = lmv_early_cancel(exp, NULL, op_data, tgt->ltd_idx, LCK_EX,
2640 MDS_INODELOCK_FULL, MF_MDC_CANCEL_FID3);
2644 CDEBUG(D_INODE, "unlink with fid="DFID"/"DFID" -> mds #%u\n",
2645 PFID(&op_data->op_fid1), PFID(&op_data->op_fid2), tgt->ltd_idx);
2647 rc = md_unlink(tgt->ltd_exp, op_data, request);
2648 if (rc != 0 && rc != -EREMOTE && rc != -ENOENT)
2651 /* Try next stripe if it is needed. */
2652 if (rc == -ENOENT && lsm != NULL && lmv_need_try_all_stripes(lsm)) {
2653 struct lmv_oinfo *oinfo;
2656 if (stripe_index >= lsm->lsm_md_stripe_count)
2659 oinfo = &lsm->lsm_md_oinfo[stripe_index];
2661 op_data->op_fid1 = oinfo->lmo_fid;
2662 op_data->op_mds = oinfo->lmo_mds;
2664 ptlrpc_req_finished(*request);
2667 goto try_next_stripe;
2670 body = req_capsule_server_get(&(*request)->rq_pill, &RMF_MDT_BODY);
2674 /* Not cross-ref case, just get out of here. */
2675 if (likely(!(body->mbo_valid & OBD_MD_MDS)))
2678 CDEBUG(D_INODE, "%s: try unlink to another MDT for "DFID"\n",
2679 exp->exp_obd->obd_name, PFID(&body->mbo_fid1));
2681 /* This is a remote object, try remote MDT, Note: it may
2682 * try more than 1 time here, Considering following case
2683 * /mnt/lustre is root on MDT0, remote1 is on MDT1
2684 * 1. Initially A does not know where remote1 is, it send
2685 * unlink RPC to MDT0, MDT0 return -EREMOTE, it will
2686 * resend unlink RPC to MDT1 (retry 1st time).
2688 * 2. During the unlink RPC in flight,
2689 * client B mv /mnt/lustre/remote1 /mnt/lustre/remote2
2690 * and create new remote1, but on MDT0
2692 * 3. MDT1 get unlink RPC(from A), then do remote lock on
2693 * /mnt/lustre, then lookup get fid of remote1, and find
2694 * it is remote dir again, and replay -EREMOTE again.
2696 * 4. Then A will resend unlink RPC to MDT0. (retry 2nd times).
2698 * In theory, it might try unlimited time here, but it should
2699 * be very rare case. */
2700 op_data->op_fid2 = body->mbo_fid1;
2701 ptlrpc_req_finished(*request);
2707 static int lmv_precleanup(struct obd_device *obd)
2710 fld_client_proc_fini(&obd->u.lmv.lmv_fld);
2711 lprocfs_obd_cleanup(obd);
2712 lprocfs_free_md_stats(obd);
2717 * Get by key a value associated with a LMV device.
2719 * Dispatch request to lower-layer devices as needed.
2721 * \param[in] env execution environment for this thread
2722 * \param[in] exp export for the LMV device
2723 * \param[in] keylen length of key identifier
2724 * \param[in] key identifier of key to get value for
2725 * \param[in] vallen size of \a val
2726 * \param[out] val pointer to storage location for value
2727 * \param[in] lsm optional striping metadata of object
2729 * \retval 0 on success
2730 * \retval negative negated errno on failure
2732 static int lmv_get_info(const struct lu_env *env, struct obd_export *exp,
2733 __u32 keylen, void *key, __u32 *vallen, void *val)
2735 struct obd_device *obd;
2736 struct lmv_obd *lmv;
2740 obd = class_exp2obd(exp);
2742 CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n",
2743 exp->exp_handle.h_cookie);
2748 if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) {
2751 rc = lmv_check_connect(obd);
2755 LASSERT(*vallen == sizeof(__u32));
2756 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2757 struct lmv_tgt_desc *tgt = lmv->tgts[i];
2759 * All tgts should be connected when this gets called.
2761 if (tgt == NULL || tgt->ltd_exp == NULL)
2764 if (!obd_get_info(env, tgt->ltd_exp, keylen, key,
2769 } else if (KEY_IS(KEY_MAX_EASIZE) ||
2770 KEY_IS(KEY_DEFAULT_EASIZE) ||
2771 KEY_IS(KEY_CONN_DATA)) {
2772 rc = lmv_check_connect(obd);
2777 * Forwarding this request to first MDS, it should know LOV
2780 rc = obd_get_info(env, lmv->tgts[0]->ltd_exp, keylen, key,
2782 if (!rc && KEY_IS(KEY_CONN_DATA))
2783 exp->exp_connect_data = *(struct obd_connect_data *)val;
2785 } else if (KEY_IS(KEY_TGT_COUNT)) {
2786 *((int *)val) = lmv->desc.ld_tgt_count;
2790 CDEBUG(D_IOCTL, "Invalid key\n");
2795 * Asynchronously set by key a value associated with a LMV device.
2797 * Dispatch request to lower-layer devices as needed.
2799 * \param[in] env execution environment for this thread
2800 * \param[in] exp export for the LMV device
2801 * \param[in] keylen length of key identifier
2802 * \param[in] key identifier of key to store value for
2803 * \param[in] vallen size of value to store
2804 * \param[in] val pointer to data to be stored
2805 * \param[in] set optional list of related ptlrpc requests
2807 * \retval 0 on success
2808 * \retval negative negated errno on failure
2810 int lmv_set_info_async(const struct lu_env *env, struct obd_export *exp,
2811 __u32 keylen, void *key, __u32 vallen, void *val,
2812 struct ptlrpc_request_set *set)
2814 struct lmv_tgt_desc *tgt = NULL;
2815 struct obd_device *obd;
2816 struct lmv_obd *lmv;
2820 obd = class_exp2obd(exp);
2822 CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n",
2823 exp->exp_handle.h_cookie);
2828 if (KEY_IS(KEY_READ_ONLY) || KEY_IS(KEY_FLUSH_CTX) ||
2829 KEY_IS(KEY_DEFAULT_EASIZE)) {
2832 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2835 if (tgt == NULL || tgt->ltd_exp == NULL)
2838 err = obd_set_info_async(env, tgt->ltd_exp,
2839 keylen, key, vallen, val, set);
2850 static int lmv_unpack_md_v1(struct obd_export *exp, struct lmv_stripe_md *lsm,
2851 const struct lmv_mds_md_v1 *lmm1)
2853 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2860 lsm->lsm_md_magic = le32_to_cpu(lmm1->lmv_magic);
2861 lsm->lsm_md_stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
2862 lsm->lsm_md_master_mdt_index = le32_to_cpu(lmm1->lmv_master_mdt_index);
2863 if (OBD_FAIL_CHECK(OBD_FAIL_UNKNOWN_LMV_STRIPE))
2864 lsm->lsm_md_hash_type = LMV_HASH_TYPE_UNKNOWN;
2866 lsm->lsm_md_hash_type = le32_to_cpu(lmm1->lmv_hash_type);
2867 lsm->lsm_md_layout_version = le32_to_cpu(lmm1->lmv_layout_version);
2868 cplen = strlcpy(lsm->lsm_md_pool_name, lmm1->lmv_pool_name,
2869 sizeof(lsm->lsm_md_pool_name));
2871 if (cplen >= sizeof(lsm->lsm_md_pool_name))
2874 CDEBUG(D_INFO, "unpack lsm count %d, master %d hash_type %d"
2875 "layout_version %d\n", lsm->lsm_md_stripe_count,
2876 lsm->lsm_md_master_mdt_index, lsm->lsm_md_hash_type,
2877 lsm->lsm_md_layout_version);
2879 stripe_count = le32_to_cpu(lmm1->lmv_stripe_count);
2880 for (i = 0; i < stripe_count; i++) {
2881 fid_le_to_cpu(&lsm->lsm_md_oinfo[i].lmo_fid,
2882 &lmm1->lmv_stripe_fids[i]);
2883 rc = lmv_fld_lookup(lmv, &lsm->lsm_md_oinfo[i].lmo_fid,
2884 &lsm->lsm_md_oinfo[i].lmo_mds);
2887 CDEBUG(D_INFO, "unpack fid #%d "DFID"\n", i,
2888 PFID(&lsm->lsm_md_oinfo[i].lmo_fid));
2894 static int lmv_unpackmd(struct obd_export *exp, struct lmv_stripe_md **lsmp,
2895 const union lmv_mds_md *lmm, size_t lmm_size)
2897 struct lmv_stripe_md *lsm;
2900 bool allocated = false;
2903 LASSERT(lsmp != NULL);
2907 if (lsm != NULL && lmm == NULL) {
2909 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
2910 /* For migrating inode, the master stripe and master
2911 * object will be the same, so do not need iput, see
2912 * ll_update_lsm_md */
2913 if (!(lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION &&
2914 i == 0) && lsm->lsm_md_oinfo[i].lmo_root != NULL)
2915 iput(lsm->lsm_md_oinfo[i].lmo_root);
2917 lsm_size = lmv_stripe_md_size(lsm->lsm_md_stripe_count);
2918 OBD_FREE(lsm, lsm_size);
2923 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_STRIPE)
2927 if (le32_to_cpu(lmm->lmv_magic) != LMV_MAGIC_V1 &&
2928 le32_to_cpu(lmm->lmv_magic) != LMV_USER_MAGIC) {
2929 CERROR("%s: invalid lmv magic %x: rc = %d\n",
2930 exp->exp_obd->obd_name, le32_to_cpu(lmm->lmv_magic),
2935 if (le32_to_cpu(lmm->lmv_magic) == LMV_MAGIC_V1)
2936 lsm_size = lmv_stripe_md_size(lmv_mds_md_stripe_count_get(lmm));
2939 * Unpack default dirstripe(lmv_user_md) to lmv_stripe_md,
2940 * stripecount should be 0 then.
2942 lsm_size = lmv_stripe_md_size(0);
2944 lsm_size = lmv_stripe_md_size(lmv_mds_md_stripe_count_get(lmm));
2946 OBD_ALLOC(lsm, lsm_size);
2953 switch (le32_to_cpu(lmm->lmv_magic)) {
2955 rc = lmv_unpack_md_v1(exp, lsm, &lmm->lmv_md_v1);
2958 CERROR("%s: unrecognized magic %x\n", exp->exp_obd->obd_name,
2959 le32_to_cpu(lmm->lmv_magic));
2964 if (rc != 0 && allocated) {
2965 OBD_FREE(lsm, lsm_size);
2972 void lmv_free_memmd(struct lmv_stripe_md *lsm)
2974 lmv_unpackmd(NULL, &lsm, NULL, 0);
2976 EXPORT_SYMBOL(lmv_free_memmd);
2978 static int lmv_cancel_unused(struct obd_export *exp, const struct lu_fid *fid,
2979 union ldlm_policy_data *policy,
2980 enum ldlm_mode mode, enum ldlm_cancel_flags flags,
2983 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
2988 LASSERT(fid != NULL);
2990 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2991 struct lmv_tgt_desc *tgt = lmv->tgts[i];
2994 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
2997 err = md_cancel_unused(tgt->ltd_exp, fid, policy, mode, flags,
3005 int lmv_set_lock_data(struct obd_export *exp, __u64 *lockh, void *data,
3008 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
3009 struct lmv_tgt_desc *tgt = lmv->tgts[0];
3013 if (tgt == NULL || tgt->ltd_exp == NULL)
3015 rc = md_set_lock_data(tgt->ltd_exp, lockh, data, bits);
3019 enum ldlm_mode lmv_lock_match(struct obd_export *exp, __u64 flags,
3020 const struct lu_fid *fid, enum ldlm_type type,
3021 union ldlm_policy_data *policy,
3022 enum ldlm_mode mode, struct lustre_handle *lockh)
3024 struct obd_device *obd = exp->exp_obd;
3025 struct lmv_obd *lmv = &obd->u.lmv;
3031 CDEBUG(D_INODE, "Lock match for "DFID"\n", PFID(fid));
3034 * With DNE every object can have two locks in different namespaces:
3035 * lookup lock in space of MDT storing direntry and update/open lock in
3036 * space of MDT storing inode. Try the MDT that the FID maps to first,
3037 * since this can be easily found, and only try others if that fails.
3039 for (i = 0, tgt = lmv_find_target_index(lmv, fid);
3040 i < lmv->desc.ld_tgt_count;
3041 i++, tgt = (tgt + 1) % lmv->desc.ld_tgt_count) {
3043 CDEBUG(D_HA, "%s: "DFID" is inaccessible: rc = %d\n",
3044 obd->obd_name, PFID(fid), tgt);
3048 if (lmv->tgts[tgt] == NULL ||
3049 lmv->tgts[tgt]->ltd_exp == NULL ||
3050 lmv->tgts[tgt]->ltd_active == 0)
3053 rc = md_lock_match(lmv->tgts[tgt]->ltd_exp, flags, fid,
3054 type, policy, mode, lockh);
3062 int lmv_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
3063 struct obd_export *dt_exp, struct obd_export *md_exp,
3064 struct lustre_md *md)
3066 struct lmv_obd *lmv = &exp->exp_obd->u.lmv;
3067 struct lmv_tgt_desc *tgt = lmv->tgts[0];
3069 if (tgt == NULL || tgt->ltd_exp == NULL)
3072 return md_get_lustre_md(lmv->tgts[0]->ltd_exp, req, dt_exp, md_exp, md);
3075 int lmv_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
3077 struct obd_device *obd = exp->exp_obd;
3078 struct lmv_obd *lmv = &obd->u.lmv;
3079 struct lmv_tgt_desc *tgt = lmv->tgts[0];
3082 if (md->lmv != NULL) {
3083 lmv_free_memmd(md->lmv);
3086 if (tgt == NULL || tgt->ltd_exp == NULL)
3088 RETURN(md_free_lustre_md(lmv->tgts[0]->ltd_exp, md));
3091 int lmv_set_open_replay_data(struct obd_export *exp,
3092 struct obd_client_handle *och,
3093 struct lookup_intent *it)
3095 struct obd_device *obd = exp->exp_obd;
3096 struct lmv_obd *lmv = &obd->u.lmv;
3097 struct lmv_tgt_desc *tgt;
3100 tgt = lmv_find_target(lmv, &och->och_fid);
3102 RETURN(PTR_ERR(tgt));
3104 RETURN(md_set_open_replay_data(tgt->ltd_exp, och, it));
3107 int lmv_clear_open_replay_data(struct obd_export *exp,
3108 struct obd_client_handle *och)
3110 struct obd_device *obd = exp->exp_obd;
3111 struct lmv_obd *lmv = &obd->u.lmv;
3112 struct lmv_tgt_desc *tgt;
3115 tgt = lmv_find_target(lmv, &och->och_fid);
3117 RETURN(PTR_ERR(tgt));
3119 RETURN(md_clear_open_replay_data(tgt->ltd_exp, och));
3122 static int lmv_get_remote_perm(struct obd_export *exp, const struct lu_fid *fid,
3123 u32 suppgid, struct ptlrpc_request **request)
3125 struct obd_device *obd = exp->exp_obd;
3126 struct lmv_obd *lmv = &obd->u.lmv;
3127 struct lmv_tgt_desc *tgt;
3131 rc = lmv_check_connect(obd);
3135 tgt = lmv_find_target(lmv, fid);
3137 RETURN(PTR_ERR(tgt));
3139 rc = md_get_remote_perm(tgt->ltd_exp, fid, suppgid, request);
3143 int lmv_intent_getattr_async(struct obd_export *exp,
3144 struct md_enqueue_info *minfo)
3146 struct md_op_data *op_data = &minfo->mi_data;
3147 struct obd_device *obd = exp->exp_obd;
3148 struct lmv_obd *lmv = &obd->u.lmv;
3149 struct lmv_tgt_desc *ptgt = NULL;
3150 struct lmv_tgt_desc *ctgt = NULL;
3154 if (!fid_is_sane(&op_data->op_fid2))
3157 rc = lmv_check_connect(obd);
3161 ptgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid1);
3163 RETURN(PTR_ERR(ptgt));
3165 ctgt = lmv_locate_mds(lmv, op_data, &op_data->op_fid2);
3167 RETURN(PTR_ERR(ctgt));
3170 * if child is on remote MDT, we need 2 async RPCs to fetch both LOOKUP
3171 * lock on parent, and UPDATE lock on child MDT, which makes all
3172 * complicated. Considering remote dir is rare case, and not supporting
3173 * it in statahead won't cause any issue, drop its support for now.
3178 rc = md_intent_getattr_async(ptgt->ltd_exp, minfo);
3182 int lmv_revalidate_lock(struct obd_export *exp, struct lookup_intent *it,
3183 struct lu_fid *fid, __u64 *bits)
3185 struct obd_device *obd = exp->exp_obd;
3186 struct lmv_obd *lmv = &obd->u.lmv;
3187 struct lmv_tgt_desc *tgt;
3191 rc = lmv_check_connect(obd);
3195 tgt = lmv_find_target(lmv, fid);
3197 RETURN(PTR_ERR(tgt));
3199 rc = md_revalidate_lock(tgt->ltd_exp, it, fid, bits);
3203 int lmv_get_fid_from_lsm(struct obd_export *exp,
3204 const struct lmv_stripe_md *lsm,
3205 const char *name, int namelen, struct lu_fid *fid)
3207 const struct lmv_oinfo *oinfo;
3209 LASSERT(lsm != NULL);
3210 oinfo = lsm_name_to_stripe_info(lsm, name, namelen);
3212 return PTR_ERR(oinfo);
3214 *fid = oinfo->lmo_fid;
3220 * For lmv, only need to send request to master MDT, and the master MDT will
3221 * process with other slave MDTs. The only exception is Q_GETOQUOTA for which
3222 * we directly fetch data from the slave MDTs.
3224 int lmv_quotactl(struct obd_device *unused, struct obd_export *exp,
3225 struct obd_quotactl *oqctl)
3227 struct obd_device *obd = class_exp2obd(exp);
3228 struct lmv_obd *lmv = &obd->u.lmv;
3229 struct lmv_tgt_desc *tgt = lmv->tgts[0];
3232 __u64 curspace, curinodes;
3236 tgt->ltd_exp == NULL ||
3238 lmv->desc.ld_tgt_count == 0) {
3239 CERROR("master lmv inactive\n");
3243 if (oqctl->qc_cmd != Q_GETOQUOTA) {
3244 rc = obd_quotactl(tgt->ltd_exp, oqctl);
3248 curspace = curinodes = 0;
3249 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
3253 if (tgt == NULL || tgt->ltd_exp == NULL || !tgt->ltd_active)
3256 err = obd_quotactl(tgt->ltd_exp, oqctl);
3258 CERROR("getquota on mdt %d failed. %d\n", i, err);
3262 curspace += oqctl->qc_dqblk.dqb_curspace;
3263 curinodes += oqctl->qc_dqblk.dqb_curinodes;
3266 oqctl->qc_dqblk.dqb_curspace = curspace;
3267 oqctl->qc_dqblk.dqb_curinodes = curinodes;
3272 static int lmv_merge_attr(struct obd_export *exp,
3273 const struct lmv_stripe_md *lsm,
3274 struct cl_attr *attr,
3275 ldlm_blocking_callback cb_blocking)
3280 rc = lmv_revalidate_slaves(exp, lsm, cb_blocking, 0);
3284 for (i = 0; i < lsm->lsm_md_stripe_count; i++) {
3285 struct inode *inode = lsm->lsm_md_oinfo[i].lmo_root;
3287 CDEBUG(D_INFO, ""DFID" size %llu, blocks %llu nlink %u,"
3288 " atime %lu ctime %lu, mtime %lu.\n",
3289 PFID(&lsm->lsm_md_oinfo[i].lmo_fid),
3290 i_size_read(inode), (unsigned long long)inode->i_blocks,
3291 inode->i_nlink, LTIME_S(inode->i_atime),
3292 LTIME_S(inode->i_ctime), LTIME_S(inode->i_mtime));
3294 /* for slave stripe, it needs to subtract nlink for . and .. */
3296 attr->cat_nlink += inode->i_nlink - 2;
3298 attr->cat_nlink = inode->i_nlink;
3300 attr->cat_size += i_size_read(inode);
3301 attr->cat_blocks += inode->i_blocks;
3303 if (attr->cat_atime < LTIME_S(inode->i_atime))
3304 attr->cat_atime = LTIME_S(inode->i_atime);
3306 if (attr->cat_ctime < LTIME_S(inode->i_ctime))
3307 attr->cat_ctime = LTIME_S(inode->i_ctime);
3309 if (attr->cat_mtime < LTIME_S(inode->i_mtime))
3310 attr->cat_mtime = LTIME_S(inode->i_mtime);
3315 struct obd_ops lmv_obd_ops = {
3316 .o_owner = THIS_MODULE,
3317 .o_setup = lmv_setup,
3318 .o_cleanup = lmv_cleanup,
3319 .o_precleanup = lmv_precleanup,
3320 .o_process_config = lmv_process_config,
3321 .o_connect = lmv_connect,
3322 .o_disconnect = lmv_disconnect,
3323 .o_statfs = lmv_statfs,
3324 .o_get_info = lmv_get_info,
3325 .o_set_info_async = lmv_set_info_async,
3326 .o_notify = lmv_notify,
3327 .o_get_uuid = lmv_get_uuid,
3328 .o_iocontrol = lmv_iocontrol,
3329 .o_quotactl = lmv_quotactl
3332 struct md_ops lmv_md_ops = {
3333 .m_get_root = lmv_get_root,
3334 .m_null_inode = lmv_null_inode,
3335 .m_close = lmv_close,
3336 .m_create = lmv_create,
3337 .m_enqueue = lmv_enqueue,
3338 .m_getattr = lmv_getattr,
3339 .m_getxattr = lmv_getxattr,
3340 .m_getattr_name = lmv_getattr_name,
3341 .m_intent_lock = lmv_intent_lock,
3343 .m_rename = lmv_rename,
3344 .m_setattr = lmv_setattr,
3345 .m_setxattr = lmv_setxattr,
3346 .m_fsync = lmv_fsync,
3347 .m_read_page = lmv_read_page,
3348 .m_unlink = lmv_unlink,
3349 .m_init_ea_size = lmv_init_ea_size,
3350 .m_cancel_unused = lmv_cancel_unused,
3351 .m_set_lock_data = lmv_set_lock_data,
3352 .m_lock_match = lmv_lock_match,
3353 .m_get_lustre_md = lmv_get_lustre_md,
3354 .m_free_lustre_md = lmv_free_lustre_md,
3355 .m_merge_attr = lmv_merge_attr,
3356 .m_set_open_replay_data = lmv_set_open_replay_data,
3357 .m_clear_open_replay_data = lmv_clear_open_replay_data,
3358 .m_get_remote_perm = lmv_get_remote_perm,
3359 .m_intent_getattr_async = lmv_intent_getattr_async,
3360 .m_revalidate_lock = lmv_revalidate_lock,
3361 .m_get_fid_from_lsm = lmv_get_fid_from_lsm,
3362 .m_unpackmd = lmv_unpackmd,
3365 static int __init lmv_init(void)
3367 return class_register_type(&lmv_obd_ops, &lmv_md_ops, true, NULL,
3368 LUSTRE_LMV_NAME, NULL);
3371 static void __exit lmv_exit(void)
3373 class_unregister_type(LUSTRE_LMV_NAME);
3376 MODULE_AUTHOR("OpenSFS, Inc. <http://www.lustre.org/>");
3377 MODULE_DESCRIPTION("Lustre Logical Metadata Volume");
3378 MODULE_VERSION(LUSTRE_VERSION_STRING);
3379 MODULE_LICENSE("GPL");
3381 module_init(lmv_init);
3382 module_exit(lmv_exit);