1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright 2008 Sun Microsystems, Inc. All rights reserved
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
38 # define EXPORT_SYMTAB
40 #define DEBUG_SUBSYSTEM S_LMV
42 #include <linux/slab.h>
43 #include <linux/module.h>
44 #include <linux/init.h>
45 #include <linux/slab.h>
46 #include <linux/pagemap.h>
48 #include <asm/div64.h>
49 #include <linux/seq_file.h>
50 #include <linux/namei.h>
52 #include <liblustre.h>
55 #include <lustre/lustre_idl.h>
56 #include <lustre_log.h>
57 #include <obd_support.h>
58 #include <lustre_lib.h>
59 #include <lustre_net.h>
60 #include <obd_class.h>
61 #include <lprocfs_status.h>
62 #include <lustre_lite.h>
63 #include <lustre_fid.h>
64 #include "lmv_internal.h"
67 cfs_mem_cache_t *lmv_object_cache;
68 cfs_atomic_t lmv_object_count = CFS_ATOMIC_INIT(0);
70 static void lmv_activate_target(struct lmv_obd *lmv,
71 struct lmv_tgt_desc *tgt,
74 if (tgt->ltd_active == activate)
77 tgt->ltd_active = activate;
78 lmv->desc.ld_active_tgt_count += (activate ? 1 : -1);
84 * -EINVAL : UUID can't be found in the LMV's target list
85 * -ENOTCONN: The UUID is found, but the target connection is bad (!)
86 * -EBADF : The UUID is found, but the OBD of the wrong type (!)
88 static int lmv_set_mdc_active(struct lmv_obd *lmv, struct obd_uuid *uuid,
91 struct lmv_tgt_desc *tgt;
92 struct obd_device *obd;
97 CDEBUG(D_INFO, "Searching in lmv %p for uuid %s (activate=%d)\n",
98 lmv, uuid->uuid, activate);
100 cfs_spin_lock(&lmv->lmv_lock);
101 for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgt++) {
102 if (tgt->ltd_exp == NULL)
105 CDEBUG(D_INFO, "Target idx %d is %s conn "LPX64"\n",
106 i, tgt->ltd_uuid.uuid, tgt->ltd_exp->exp_handle.h_cookie);
108 if (obd_uuid_equals(uuid, &tgt->ltd_uuid))
112 if (i == lmv->desc.ld_tgt_count)
113 GOTO(out_lmv_lock, rc = -EINVAL);
115 obd = class_exp2obd(tgt->ltd_exp);
117 GOTO(out_lmv_lock, rc = -ENOTCONN);
119 CDEBUG(D_INFO, "Found OBD %s=%s device %d (%p) type %s at LMV idx %d\n",
120 obd->obd_name, obd->obd_uuid.uuid, obd->obd_minor, obd,
121 obd->obd_type->typ_name, i);
122 LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) == 0);
124 if (tgt->ltd_active == activate) {
125 CDEBUG(D_INFO, "OBD %p already %sactive!\n", obd,
126 activate ? "" : "in");
127 GOTO(out_lmv_lock, rc);
130 CDEBUG(D_INFO, "Marking OBD %p %sactive\n", obd,
131 activate ? "" : "in");
132 lmv_activate_target(lmv, tgt, activate);
136 cfs_spin_unlock(&lmv->lmv_lock);
140 static int lmv_set_mdc_data(struct lmv_obd *lmv, struct obd_uuid *uuid,
141 struct obd_connect_data *data)
143 struct lmv_tgt_desc *tgt;
147 LASSERT(data != NULL);
149 cfs_spin_lock(&lmv->lmv_lock);
150 for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgt++) {
151 if (tgt->ltd_exp == NULL)
154 if (obd_uuid_equals(uuid, &tgt->ltd_uuid)) {
155 lmv->datas[tgt->ltd_idx] = *data;
159 cfs_spin_unlock(&lmv->lmv_lock);
163 struct obd_uuid *lmv_get_uuid(struct obd_export *exp) {
164 struct obd_device *obd = exp->exp_obd;
165 struct lmv_obd *lmv = &obd->u.lmv;
166 return obd_get_uuid(lmv->tgts[0].ltd_exp);
169 static int lmv_notify(struct obd_device *obd, struct obd_device *watched,
170 enum obd_notify_event ev, void *data)
172 struct obd_connect_data *conn_data;
173 struct lmv_obd *lmv = &obd->u.lmv;
174 struct obd_uuid *uuid;
178 if (strcmp(watched->obd_type->typ_name, LUSTRE_MDC_NAME)) {
179 CERROR("unexpected notification of %s %s!\n",
180 watched->obd_type->typ_name,
185 uuid = &watched->u.cli.cl_target_uuid;
186 if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE) {
188 * Set MDC as active before notifying the observer, so the
189 * observer can use the MDC normally.
191 rc = lmv_set_mdc_active(lmv, uuid,
192 ev == OBD_NOTIFY_ACTIVE);
194 CERROR("%sactivation of %s failed: %d\n",
195 ev == OBD_NOTIFY_ACTIVE ? "" : "de",
199 } else if (ev == OBD_NOTIFY_OCD) {
200 conn_data = &watched->u.cli.cl_import->imp_connect_data;
203 * Set connect data to desired target, update exp_connect_flags.
205 rc = lmv_set_mdc_data(lmv, uuid, conn_data);
207 CERROR("can't set connect data to target %s, rc %d\n",
213 * XXX: Make sure that ocd_connect_flags from all targets are
214 * the same. Otherwise one of MDTs runs wrong version or
215 * something like this. --umka
217 obd->obd_self_export->exp_connect_flags =
218 conn_data->ocd_connect_flags;
221 else if (ev == OBD_NOTIFY_DISCON) {
223 * For disconnect event, flush fld cache for failout MDS case.
225 fld_client_flush(&lmv->lmv_fld);
229 * Pass the notification up the chain.
231 if (obd->obd_observer)
232 rc = obd_notify(obd->obd_observer, watched, ev, data);
238 * This is fake connect function. Its purpose is to initialize lmv and say
239 * caller that everything is okay. Real connection will be performed later.
241 static int lmv_connect(const struct lu_env *env,
242 struct obd_export **exp, struct obd_device *obd,
243 struct obd_uuid *cluuid, struct obd_connect_data *data,
247 struct proc_dir_entry *lmv_proc_dir;
249 struct lmv_obd *lmv = &obd->u.lmv;
250 struct lustre_handle conn = { 0 };
255 * We don't want to actually do the underlying connections more than
256 * once, so keep track.
259 if (lmv->refcount > 1) {
264 rc = class_connect(&conn, obd, cluuid);
266 CERROR("class_connection() returned %d\n", rc);
270 *exp = class_conn2export(&conn);
271 class_export_get(*exp);
275 lmv->cluuid = *cluuid;
278 lmv->conn_data = *data;
281 lmv_proc_dir = lprocfs_register("target_obds", obd->obd_proc_entry,
283 if (IS_ERR(lmv_proc_dir)) {
284 CERROR("could not register /proc/fs/lustre/%s/%s/target_obds.",
285 obd->obd_type->typ_name, obd->obd_name);
291 * All real clients should perform actual connection right away, because
292 * it is possible, that LMV will not have opportunity to connect targets
293 * and MDC stuff will be called directly, for instance while reading
294 * ../mdc/../kbytesfree procfs file, etc.
296 if (data->ocd_connect_flags & OBD_CONNECT_REAL)
297 rc = lmv_check_connect(obd);
302 lprocfs_remove(&lmv_proc_dir);
309 static void lmv_set_timeouts(struct obd_device *obd)
311 struct lmv_tgt_desc *tgts;
316 if (lmv->server_timeout == 0)
319 if (lmv->connected == 0)
322 for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgts++) {
323 if (tgts->ltd_exp == NULL)
326 obd_set_info_async(tgts->ltd_exp, sizeof(KEY_INTERMDS),
327 KEY_INTERMDS, 0, NULL, NULL);
331 static int lmv_init_ea_size(struct obd_export *exp, int easize,
332 int def_easize, int cookiesize)
334 struct obd_device *obd = exp->exp_obd;
335 struct lmv_obd *lmv = &obd->u.lmv;
341 if (lmv->max_easize < easize) {
342 lmv->max_easize = easize;
345 if (lmv->max_def_easize < def_easize) {
346 lmv->max_def_easize = def_easize;
349 if (lmv->max_cookiesize < cookiesize) {
350 lmv->max_cookiesize = cookiesize;
356 if (lmv->connected == 0)
359 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
360 if (lmv->tgts[i].ltd_exp == NULL) {
361 CWARN("%s: NULL export for %d\n", obd->obd_name, i);
365 rc = md_init_ea_size(lmv->tgts[i].ltd_exp, easize, def_easize,
368 CERROR("obd_init_ea_size() failed on MDT target %d, "
369 "error %d.\n", i, rc);
376 #define MAX_STRING_SIZE 128
378 int lmv_connect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
381 struct proc_dir_entry *lmv_proc_dir;
383 struct lmv_obd *lmv = &obd->u.lmv;
384 struct obd_uuid *cluuid = &lmv->cluuid;
385 struct obd_connect_data *mdc_data = NULL;
386 struct obd_uuid lmv_mdc_uuid = { "LMV_MDC_UUID" };
387 struct obd_device *mdc_obd;
388 struct obd_export *mdc_exp;
389 struct lu_fld_target target;
393 mdc_obd = class_find_client_obd(&tgt->ltd_uuid, LUSTRE_MDC_NAME,
396 CERROR("target %s not attached\n", tgt->ltd_uuid.uuid);
400 CDEBUG(D_CONFIG, "connect to %s(%s) - %s, %s FOR %s\n",
401 mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
402 tgt->ltd_uuid.uuid, obd->obd_uuid.uuid,
405 if (!mdc_obd->obd_set_up) {
406 CERROR("target %s is not set up\n", tgt->ltd_uuid.uuid);
410 rc = obd_connect(NULL, &mdc_exp, mdc_obd, &lmv_mdc_uuid,
411 &lmv->conn_data, NULL);
413 CERROR("target %s connect error %d\n", tgt->ltd_uuid.uuid, rc);
418 * Init fid sequence client for this mdc and add new fld target.
420 rc = obd_fid_init(mdc_exp);
424 target.ft_srv = NULL;
425 target.ft_exp = mdc_exp;
426 target.ft_idx = tgt->ltd_idx;
428 fld_client_add_target(&lmv->lmv_fld, &target);
430 mdc_data = &class_exp2cliimp(mdc_exp)->imp_connect_data;
432 rc = obd_register_observer(mdc_obd, obd);
434 obd_disconnect(mdc_exp);
435 CERROR("target %s register_observer error %d\n",
436 tgt->ltd_uuid.uuid, rc);
440 if (obd->obd_observer) {
442 * Tell the observer about the new target.
444 rc = obd_notify(obd->obd_observer, mdc_exp->exp_obd,
445 OBD_NOTIFY_ACTIVE, (void *)(tgt - lmv->tgts));
447 obd_disconnect(mdc_exp);
453 tgt->ltd_exp = mdc_exp;
454 lmv->desc.ld_active_tgt_count++;
457 * Copy connect data, it may be used later.
459 lmv->datas[tgt->ltd_idx] = *mdc_data;
461 md_init_ea_size(tgt->ltd_exp, lmv->max_easize,
462 lmv->max_def_easize, lmv->max_cookiesize);
464 CDEBUG(D_CONFIG, "Connected to %s(%s) successfully (%d)\n",
465 mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
466 cfs_atomic_read(&obd->obd_refcount));
469 lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
471 struct proc_dir_entry *mdc_symlink;
473 LASSERT(mdc_obd->obd_type != NULL);
474 LASSERT(mdc_obd->obd_type->typ_name != NULL);
475 mdc_symlink = lprocfs_add_symlink(mdc_obd->obd_name,
478 mdc_obd->obd_type->typ_name,
480 if (mdc_symlink == NULL) {
481 CERROR("Could not register LMV target "
482 "/proc/fs/lustre/%s/%s/target_obds/%s.",
483 obd->obd_type->typ_name, obd->obd_name,
485 lprocfs_remove(&lmv_proc_dir);
493 int lmv_add_target(struct obd_device *obd, struct obd_uuid *tgt_uuid)
495 struct lmv_obd *lmv = &obd->u.lmv;
496 struct lmv_tgt_desc *tgt;
500 CDEBUG(D_CONFIG, "Target uuid: %s.\n", tgt_uuid->uuid);
504 if (lmv->desc.ld_active_tgt_count >= LMV_MAX_TGT_COUNT) {
505 lmv_init_unlock(lmv);
506 CERROR("Can't add %s, LMV module compiled for %d MDCs. "
507 "That many MDCs already configured.\n",
508 tgt_uuid->uuid, LMV_MAX_TGT_COUNT);
511 if (lmv->desc.ld_tgt_count == 0) {
512 struct obd_device *mdc_obd;
514 mdc_obd = class_find_client_obd(tgt_uuid, LUSTRE_MDC_NAME,
517 lmv_init_unlock(lmv);
518 CERROR("Target %s not attached\n", tgt_uuid->uuid);
522 rc = obd_llog_init(obd, &obd->obd_olg, mdc_obd, NULL);
524 lmv_init_unlock(lmv);
525 CERROR("lmv failed to setup llogging subsystems\n");
528 cfs_spin_lock(&lmv->lmv_lock);
529 tgt = lmv->tgts + lmv->desc.ld_tgt_count++;
530 tgt->ltd_uuid = *tgt_uuid;
531 cfs_spin_unlock(&lmv->lmv_lock);
533 if (lmv->connected) {
534 rc = lmv_connect_mdc(obd, tgt);
536 cfs_spin_lock(&lmv->lmv_lock);
537 lmv->desc.ld_tgt_count--;
538 memset(tgt, 0, sizeof(*tgt));
539 cfs_spin_unlock(&lmv->lmv_lock);
541 int easize = sizeof(struct lmv_stripe_md) +
542 lmv->desc.ld_tgt_count *
543 sizeof(struct lu_fid);
544 lmv_init_ea_size(obd->obd_self_export, easize, 0, 0);
548 lmv_init_unlock(lmv);
552 int lmv_check_connect(struct obd_device *obd)
554 struct lmv_obd *lmv = &obd->u.lmv;
555 struct lmv_tgt_desc *tgt;
565 if (lmv->connected) {
566 lmv_init_unlock(lmv);
570 if (lmv->desc.ld_tgt_count == 0) {
571 CERROR("%s: no targets configured.\n", obd->obd_name);
575 CDEBUG(D_CONFIG, "Time to connect %s to %s\n",
576 lmv->cluuid.uuid, obd->obd_name);
578 LASSERT(lmv->tgts != NULL);
580 for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgt++) {
581 rc = lmv_connect_mdc(obd, tgt);
586 lmv_set_timeouts(obd);
587 class_export_put(lmv->exp);
589 easize = lmv_get_easize(lmv);
590 lmv_init_ea_size(obd->obd_self_export, easize, 0, 0);
591 lmv_init_unlock(lmv);
600 --lmv->desc.ld_active_tgt_count;
601 rc2 = obd_disconnect(tgt->ltd_exp);
603 CERROR("LMV target %s disconnect on "
604 "MDC idx %d: error %d\n",
605 tgt->ltd_uuid.uuid, i, rc2);
609 class_disconnect(lmv->exp);
610 lmv_init_unlock(lmv);
614 static int lmv_disconnect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
617 struct proc_dir_entry *lmv_proc_dir;
619 struct lmv_obd *lmv = &obd->u.lmv;
620 struct obd_device *mdc_obd;
624 LASSERT(tgt != NULL);
625 LASSERT(obd != NULL);
627 mdc_obd = class_exp2obd(tgt->ltd_exp);
630 mdc_obd->obd_no_recov = obd->obd_no_recov;
633 lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
635 struct proc_dir_entry *mdc_symlink;
637 mdc_symlink = lprocfs_srch(lmv_proc_dir, mdc_obd->obd_name);
639 lprocfs_remove(&mdc_symlink);
641 CERROR("/proc/fs/lustre/%s/%s/target_obds/%s missing\n",
642 obd->obd_type->typ_name, obd->obd_name,
647 rc = obd_fid_fini(tgt->ltd_exp);
649 CERROR("Can't finanize fids factory\n");
651 CDEBUG(D_INFO, "Disconnected from %s(%s) successfully\n",
652 tgt->ltd_exp->exp_obd->obd_name,
653 tgt->ltd_exp->exp_obd->obd_uuid.uuid);
655 obd_register_observer(tgt->ltd_exp->exp_obd, NULL);
656 rc = obd_disconnect(tgt->ltd_exp);
658 if (tgt->ltd_active) {
659 CERROR("Target %s disconnect error %d\n",
660 tgt->ltd_uuid.uuid, rc);
664 lmv_activate_target(lmv, tgt, 0);
669 static int lmv_disconnect(struct obd_export *exp)
671 struct obd_device *obd = class_exp2obd(exp);
673 struct proc_dir_entry *lmv_proc_dir;
675 struct lmv_obd *lmv = &obd->u.lmv;
684 * Only disconnect the underlying layers on the final disconnect.
687 if (lmv->refcount != 0)
690 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
691 if (lmv->tgts[i].ltd_exp == NULL)
693 lmv_disconnect_mdc(obd, &lmv->tgts[i]);
697 lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
699 lprocfs_remove(&lmv_proc_dir);
701 CERROR("/proc/fs/lustre/%s/%s/target_obds missing\n",
702 obd->obd_type->typ_name, obd->obd_name);
708 * This is the case when no real connection is established by
709 * lmv_check_connect().
712 class_export_put(exp);
713 rc = class_disconnect(exp);
714 if (lmv->refcount == 0)
719 static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp,
720 int len, void *karg, void *uarg)
722 struct obd_device *obddev = class_exp2obd(exp);
723 struct lmv_obd *lmv = &obddev->u.lmv;
727 int count = lmv->desc.ld_tgt_count;
734 case IOC_OBD_STATFS: {
735 struct obd_ioctl_data *data = karg;
736 struct obd_device *mdc_obd;
737 struct obd_statfs stat_buf = {0};
740 memcpy(&index, data->ioc_inlbuf2, sizeof(__u32));
741 LASSERT(data->ioc_plen1 == sizeof(struct obd_statfs));
743 if ((index >= count))
746 if (!lmv->tgts[index].ltd_active)
749 mdc_obd = class_exp2obd(lmv->tgts[index].ltd_exp);
753 rc = obd_statfs(mdc_obd, &stat_buf,
754 cfs_time_current_64() - CFS_HZ, 0);
757 if (cfs_copy_to_user(data->ioc_pbuf1, &stat_buf,
760 if (cfs_copy_to_user(data->ioc_pbuf2, obd2cli_tgt(mdc_obd),
765 case OBD_IOC_QUOTACTL: {
766 struct if_quotactl *qctl = karg;
767 struct lmv_tgt_desc *tgt = NULL;
768 struct obd_quotactl *oqctl;
770 if (qctl->qc_valid == QC_MDTIDX) {
771 if (qctl->qc_idx < 0 || count <= qctl->qc_idx)
774 tgt = &lmv->tgts[qctl->qc_idx];
777 } else if (qctl->qc_valid == QC_UUID) {
778 for (i = 0; i < count; i++) {
780 if (!obd_uuid_equals(&tgt->ltd_uuid,
784 if (tgt->ltd_exp == NULL)
796 LASSERT(tgt && tgt->ltd_exp);
797 OBD_ALLOC_PTR(oqctl);
801 QCTL_COPY(oqctl, qctl);
802 rc = obd_quotactl(tgt->ltd_exp, oqctl);
804 QCTL_COPY(qctl, oqctl);
805 qctl->qc_valid = QC_MDTIDX;
806 qctl->obd_uuid = tgt->ltd_uuid;
811 case OBD_IOC_CHANGELOG_CLEAR: {
812 struct ioc_changelog_clear *icc = karg;
814 if (icc->icc_mdtindex >= count)
817 rc = obd_iocontrol(cmd, lmv->tgts[icc->icc_mdtindex].ltd_exp,
818 sizeof(*icc), icc, NULL);
823 for (i = 0; i < count; i++) {
826 if (lmv->tgts[i].ltd_exp == NULL)
829 err = obd_iocontrol(cmd, lmv->tgts[i].ltd_exp, len,
831 if (err == -ENODATA && cmd == OBD_IOC_POLL_QUOTACHECK) {
834 if (lmv->tgts[i].ltd_active) {
835 CERROR("error: iocontrol MDC %s on MDT"
836 "idx %d cmd %x: err = %d\n",
837 lmv->tgts[i].ltd_uuid.uuid,
852 static int lmv_all_chars_policy(int count, const char *name,
863 static int lmv_nid_policy(struct lmv_obd *lmv)
865 struct obd_import *imp;
869 * XXX: To get nid we assume that underlying obd device is mdc.
871 imp = class_exp2cliimp(lmv->tgts[0].ltd_exp);
872 id = imp->imp_connection->c_self ^ (imp->imp_connection->c_self >> 32);
873 return id % lmv->desc.ld_tgt_count;
876 static int lmv_choose_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
877 placement_policy_t placement)
880 case PLACEMENT_CHAR_POLICY:
881 return lmv_all_chars_policy(lmv->desc.ld_tgt_count,
883 op_data->op_namelen);
884 case PLACEMENT_NID_POLICY:
885 return lmv_nid_policy(lmv);
891 CERROR("Unsupported placement policy %x\n", placement);
896 * This is _inode_ placement policy function (not name).
898 static int lmv_placement_policy(struct obd_device *obd,
899 struct md_op_data *op_data,
902 struct lmv_obd *lmv = &obd->u.lmv;
903 struct lmv_object *obj;
907 LASSERT(mds != NULL);
909 if (lmv->desc.ld_tgt_count == 1) {
915 * Allocate new fid on target according to operation type and parent
918 obj = lmv_object_find(obd, &op_data->op_fid1);
919 if (obj != NULL || op_data->op_name == NULL ||
920 op_data->op_opc != LUSTRE_OPC_MKDIR) {
922 * Allocate fid for non-dir or for null name or for case parent
929 * If we have this flag turned on, and we see that
930 * parent dir is split, this means, that caller did not
931 * notice split yet. This is race and we would like to
932 * let caller know that.
934 if (op_data->op_bias & MDS_CHECK_SPLIT)
939 * Allocate new fid on same mds where parent fid is located and
940 * where operation will be sent. In case of split dir, ->op_fid1
941 * and ->op_mds here will contain fid and mds of slave directory
942 * object (assigned by caller).
944 *mds = op_data->op_mds;
948 * Parent directory is not split and we want to create a
949 * directory in it. Let's calculate where to place it according
950 * to operation data @op_data.
952 *mds = lmv_choose_mds(lmv, op_data, lmv->lmv_placement);
957 CERROR("Can't choose MDS, err = %d\n", rc);
959 LASSERT(*mds < lmv->desc.ld_tgt_count);
965 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid,
968 struct lmv_tgt_desc *tgt;
972 tgt = lmv_get_target(lmv, mds);
975 * New seq alloc and FLD setup should be atomic. Otherwise we may find
976 * on server that seq in new allocated fid is not yet known.
978 cfs_down(&tgt->ltd_fid_sem);
980 if (!tgt->ltd_active)
981 GOTO(out, rc = -ENODEV);
984 * Asking underlaying tgt layer to allocate new fid.
986 rc = obd_fid_alloc(tgt->ltd_exp, fid, NULL);
988 LASSERT(fid_is_sane(fid));
994 cfs_up(&tgt->ltd_fid_sem);
998 int lmv_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
999 struct md_op_data *op_data)
1001 struct obd_device *obd = class_exp2obd(exp);
1002 struct lmv_obd *lmv = &obd->u.lmv;
1007 LASSERT(op_data != NULL);
1008 LASSERT(fid != NULL);
1010 rc = lmv_placement_policy(obd, op_data, &mds);
1012 CERROR("Can't get target for allocating fid, "
1017 rc = __lmv_fid_alloc(lmv, fid, mds);
1019 CERROR("Can't alloc new fid, rc %d\n", rc);
1026 static int lmv_fid_delete(struct obd_export *exp, const struct lu_fid *fid)
1029 LASSERT(exp != NULL && fid != NULL);
1030 if (lmv_object_delete(exp, fid)) {
1031 CDEBUG(D_INODE, "Object "DFID" is destroyed.\n",
1037 static int lmv_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
1039 struct lmv_obd *lmv = &obd->u.lmv;
1040 struct lprocfs_static_vars lvars;
1041 struct lmv_desc *desc;
1046 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
1047 CERROR("LMV setup requires a descriptor\n");
1051 desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1);
1052 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
1053 CERROR("Lmv descriptor size wrong: %d > %d\n",
1054 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
1058 lmv->tgts_size = LMV_MAX_TGT_COUNT * sizeof(struct lmv_tgt_desc);
1060 OBD_ALLOC(lmv->tgts, lmv->tgts_size);
1061 if (lmv->tgts == NULL)
1064 for (i = 0; i < LMV_MAX_TGT_COUNT; i++) {
1065 cfs_sema_init(&lmv->tgts[i].ltd_fid_sem, 1);
1066 lmv->tgts[i].ltd_idx = i;
1069 lmv->datas_size = LMV_MAX_TGT_COUNT * sizeof(struct obd_connect_data);
1071 OBD_ALLOC(lmv->datas, lmv->datas_size);
1072 if (lmv->datas == NULL)
1073 GOTO(out_free_tgts, rc = -ENOMEM);
1075 obd_str2uuid(&lmv->desc.ld_uuid, desc->ld_uuid.uuid);
1076 lmv->desc.ld_tgt_count = 0;
1077 lmv->desc.ld_active_tgt_count = 0;
1078 lmv->max_cookiesize = 0;
1079 lmv->max_def_easize = 0;
1080 lmv->max_easize = 0;
1081 lmv->lmv_placement = PLACEMENT_CHAR_POLICY;
1083 cfs_spin_lock_init(&lmv->lmv_lock);
1084 cfs_sema_init(&lmv->init_sem, 1);
1086 rc = lmv_object_setup(obd);
1088 CERROR("Can't setup LMV object manager, error %d.\n", rc);
1089 GOTO(out_free_datas, rc);
1092 lprocfs_lmv_init_vars(&lvars);
1093 lprocfs_obd_setup(obd, lvars.obd_vars);
1096 rc = lprocfs_seq_create(obd->obd_proc_entry, "target_obd_status",
1097 0444, &lmv_proc_target_fops, obd);
1099 CWARN("Error adding target_obd_stats file (%d)\n", rc);
1102 rc = fld_client_init(&lmv->lmv_fld, obd->obd_name,
1103 LUSTRE_CLI_FLD_HASH_DHT);
1105 CERROR("Can't init FLD, err %d\n", rc);
1106 GOTO(out_free_datas, rc);
1112 OBD_FREE(lmv->datas, lmv->datas_size);
1115 OBD_FREE(lmv->tgts, lmv->tgts_size);
1120 static int lmv_cleanup(struct obd_device *obd)
1122 struct lmv_obd *lmv = &obd->u.lmv;
1125 fld_client_fini(&lmv->lmv_fld);
1126 lprocfs_obd_cleanup(obd);
1127 lmv_object_cleanup(obd);
1128 OBD_FREE(lmv->datas, lmv->datas_size);
1129 OBD_FREE(lmv->tgts, lmv->tgts_size);
1134 static int lmv_process_config(struct obd_device *obd, obd_count len, void *buf)
1136 struct lustre_cfg *lcfg = buf;
1137 struct obd_uuid tgt_uuid;
1141 switch(lcfg->lcfg_command) {
1143 if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(tgt_uuid.uuid))
1144 GOTO(out, rc = -EINVAL);
1146 obd_str2uuid(&tgt_uuid, lustre_cfg_string(lcfg, 1));
1147 rc = lmv_add_target(obd, &tgt_uuid);
1150 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1151 GOTO(out, rc = -EINVAL);
1158 static int lmv_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1159 __u64 max_age, __u32 flags)
1161 struct lmv_obd *lmv = &obd->u.lmv;
1162 struct obd_statfs *temp;
1167 rc = lmv_check_connect(obd);
1171 OBD_ALLOC(temp, sizeof(*temp));
1175 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1176 if (lmv->tgts[i].ltd_exp == NULL)
1179 rc = obd_statfs(lmv->tgts[i].ltd_exp->exp_obd, temp,
1182 CERROR("can't stat MDS #%d (%s), error %d\n", i,
1183 lmv->tgts[i].ltd_exp->exp_obd->obd_name,
1185 GOTO(out_free_temp, rc);
1190 osfs->os_bavail += temp->os_bavail;
1191 osfs->os_blocks += temp->os_blocks;
1192 osfs->os_ffree += temp->os_ffree;
1193 osfs->os_files += temp->os_files;
1199 OBD_FREE(temp, sizeof(*temp));
1203 static int lmv_getstatus(struct obd_export *exp,
1205 struct obd_capa **pc)
1207 struct obd_device *obd = exp->exp_obd;
1208 struct lmv_obd *lmv = &obd->u.lmv;
1212 rc = lmv_check_connect(obd);
1216 rc = md_getstatus(lmv->tgts[0].ltd_exp, fid, pc);
1220 static int lmv_getxattr(struct obd_export *exp, const struct lu_fid *fid,
1221 struct obd_capa *oc, obd_valid valid, const char *name,
1222 const char *input, int input_size, int output_size,
1223 int flags, struct ptlrpc_request **request)
1225 struct obd_device *obd = exp->exp_obd;
1226 struct lmv_obd *lmv = &obd->u.lmv;
1227 struct lmv_tgt_desc *tgt;
1231 rc = lmv_check_connect(obd);
1235 tgt = lmv_find_target(lmv, fid);
1237 RETURN(PTR_ERR(tgt));
1239 rc = md_getxattr(tgt->ltd_exp, fid, oc, valid, name, input,
1240 input_size, output_size, flags, request);
1245 static int lmv_setxattr(struct obd_export *exp, const struct lu_fid *fid,
1246 struct obd_capa *oc, obd_valid valid, const char *name,
1247 const char *input, int input_size, int output_size,
1248 int flags, __u32 suppgid,
1249 struct ptlrpc_request **request)
1251 struct obd_device *obd = exp->exp_obd;
1252 struct lmv_obd *lmv = &obd->u.lmv;
1253 struct lmv_tgt_desc *tgt;
1257 rc = lmv_check_connect(obd);
1261 tgt = lmv_find_target(lmv, fid);
1263 RETURN(PTR_ERR(tgt));
1265 rc = md_setxattr(tgt->ltd_exp, fid, oc, valid, name, input,
1266 input_size, output_size, flags, suppgid,
1272 static int lmv_getattr(struct obd_export *exp, const struct lu_fid *fid,
1273 struct obd_capa *oc, obd_valid valid, int ea_size,
1274 struct ptlrpc_request **request)
1276 struct obd_device *obd = exp->exp_obd;
1277 struct lmv_obd *lmv = &obd->u.lmv;
1278 struct lmv_tgt_desc *tgt;
1279 struct lmv_object *obj;
1284 rc = lmv_check_connect(obd);
1288 tgt = lmv_find_target(lmv, fid);
1290 RETURN(PTR_ERR(tgt));
1292 rc = md_getattr(tgt->ltd_exp, fid, oc, valid, ea_size, request);
1296 obj = lmv_object_find_lock(obd, fid);
1298 CDEBUG(D_INODE, "GETATTR for "DFID" %s\n", PFID(fid),
1299 obj ? "(split)" : "");
1302 * If object is split, then we loop over all the slaves and gather size
1303 * attribute. In ideal world we would have to gather also mds field from
1304 * all slaves, as object is spread over the cluster and this is
1305 * definitely interesting information and it is not good to loss it,
1309 struct mdt_body *body;
1311 if (*request == NULL) {
1312 lmv_object_put(obj);
1316 body = req_capsule_server_get(&(*request)->rq_pill,
1318 LASSERT(body != NULL);
1320 for (i = 0; i < obj->lo_objcount; i++) {
1321 if (lmv->tgts[i].ltd_exp == NULL) {
1322 CWARN("%s: NULL export for %d\n",
1328 * Skip master object.
1330 if (lu_fid_eq(&obj->lo_fid, &obj->lo_stripes[i].ls_fid))
1333 body->size += obj->lo_stripes[i].ls_size;
1336 lmv_object_put_unlock(obj);
1342 static int lmv_change_cbdata(struct obd_export *exp, const struct lu_fid *fid,
1343 ldlm_iterator_t it, void *data)
1345 struct obd_device *obd = exp->exp_obd;
1346 struct lmv_obd *lmv = &obd->u.lmv;
1351 rc = lmv_check_connect(obd);
1355 CDEBUG(D_INODE, "CBDATA for "DFID"\n", PFID(fid));
1358 * With CMD every object can have two locks in different namespaces:
1359 * lookup lock in space of mds storing direntry and update/open lock in
1360 * space of mds storing inode.
1362 for (i = 0; i < lmv->desc.ld_tgt_count; i++)
1363 md_change_cbdata(lmv->tgts[i].ltd_exp, fid, it, data);
1368 static int lmv_close(struct obd_export *exp, struct md_op_data *op_data,
1369 struct md_open_data *mod, struct ptlrpc_request **request)
1371 struct obd_device *obd = exp->exp_obd;
1372 struct lmv_obd *lmv = &obd->u.lmv;
1373 struct lmv_tgt_desc *tgt;
1377 rc = lmv_check_connect(obd);
1381 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1383 RETURN(PTR_ERR(tgt));
1385 CDEBUG(D_INODE, "CLOSE "DFID"\n", PFID(&op_data->op_fid1));
1386 rc = md_close(tgt->ltd_exp, op_data, mod, request);
1391 * Called in the case MDS returns -ERESTART on create on open, what means that
1392 * directory is split and its LMV presentation object has to be updated.
1394 int lmv_handle_split(struct obd_export *exp, const struct lu_fid *fid)
1396 struct obd_device *obd = exp->exp_obd;
1397 struct lmv_obd *lmv = &obd->u.lmv;
1398 struct ptlrpc_request *req = NULL;
1399 struct lmv_tgt_desc *tgt;
1400 struct lmv_object *obj;
1401 struct lustre_md md;
1408 mealen = lmv_get_easize(lmv);
1410 valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA | OBD_MD_MEA;
1412 tgt = lmv_find_target(lmv, fid);
1414 RETURN(PTR_ERR(tgt));
1417 * Time to update mea of parent fid.
1419 rc = md_getattr(tgt->ltd_exp, fid, NULL, valid, mealen, &req);
1421 CERROR("md_getattr() failed, error %d\n", rc);
1425 rc = md_get_lustre_md(tgt->ltd_exp, req, NULL, exp, &md);
1427 CERROR("md_get_lustre_md() failed, error %d\n", rc);
1432 GOTO(cleanup, rc = -ENODATA);
1434 obj = lmv_object_create(exp, fid, md.mea);
1438 lmv_object_put(obj);
1440 obd_free_memmd(exp, (void *)&md.mea);
1444 ptlrpc_req_finished(req);
1448 int lmv_create(struct obd_export *exp, struct md_op_data *op_data,
1449 const void *data, int datalen, int mode, __u32 uid,
1450 __u32 gid, cfs_cap_t cap_effective, __u64 rdev,
1451 struct ptlrpc_request **request)
1453 struct obd_device *obd = exp->exp_obd;
1454 struct lmv_obd *lmv = &obd->u.lmv;
1455 struct lmv_tgt_desc *tgt;
1456 struct lmv_object *obj;
1462 rc = lmv_check_connect(obd);
1466 if (!lmv->desc.ld_active_tgt_count)
1472 obj = lmv_object_find(obd, &op_data->op_fid1);
1474 sidx = raw_name2idx(obj->lo_hashtype, obj->lo_objcount,
1475 op_data->op_name, op_data->op_namelen);
1476 op_data->op_fid1 = obj->lo_stripes[sidx].ls_fid;
1477 op_data->op_bias &= ~MDS_CHECK_SPLIT;
1478 op_data->op_mds = obj->lo_stripes[sidx].ls_mds;
1479 tgt = lmv_get_target(lmv, op_data->op_mds);
1480 lmv_object_put(obj);
1482 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1483 op_data->op_bias |= MDS_CHECK_SPLIT;
1484 op_data->op_mds = tgt->ltd_idx;
1488 RETURN(PTR_ERR(tgt));
1490 rc = lmv_fid_alloc(exp, &op_data->op_fid2, op_data);
1491 if (rc == -ERESTART)
1496 CDEBUG(D_INODE, "CREATE '%*s' on "DFID" -> mds #%x\n",
1497 op_data->op_namelen, op_data->op_name, PFID(&op_data->op_fid1),
1500 op_data->op_flags |= MF_MDC_CANCEL_FID1;
1501 rc = md_create(tgt->ltd_exp, op_data, data, datalen, mode, uid, gid,
1502 cap_effective, rdev, request);
1504 if (*request == NULL)
1506 CDEBUG(D_INODE, "Created - "DFID"\n", PFID(&op_data->op_fid2));
1507 } else if (rc == -ERESTART) {
1508 LASSERT(*request != NULL);
1509 DEBUG_REQ(D_WARNING|D_RPCTRACE, *request,
1510 "Got -ERESTART during create!\n");
1511 ptlrpc_req_finished(*request);
1515 * Directory got split. Time to update local object and repeat
1516 * the request with proper MDS.
1518 rc = lmv_handle_split(exp, &op_data->op_fid1);
1520 rc = lmv_allocate_slaves(obd, &op_data->op_fid1,
1521 op_data, &op_data->op_fid2);
1530 static int lmv_done_writing(struct obd_export *exp,
1531 struct md_op_data *op_data,
1532 struct md_open_data *mod)
1534 struct obd_device *obd = exp->exp_obd;
1535 struct lmv_obd *lmv = &obd->u.lmv;
1536 struct lmv_tgt_desc *tgt;
1540 rc = lmv_check_connect(obd);
1544 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1546 RETURN(PTR_ERR(tgt));
1548 rc = md_done_writing(tgt->ltd_exp, op_data, mod);
1553 lmv_enqueue_slaves(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
1554 struct lookup_intent *it, struct md_op_data *op_data,
1555 struct lustre_handle *lockh, void *lmm, int lmmsize)
1557 struct obd_device *obd = exp->exp_obd;
1558 struct lmv_obd *lmv = &obd->u.lmv;
1559 struct lmv_stripe_md *mea = op_data->op_mea1;
1560 struct md_op_data *op_data2;
1561 struct lmv_tgt_desc *tgt;
1566 OBD_ALLOC_PTR(op_data2);
1567 if (op_data2 == NULL)
1570 LASSERT(mea != NULL);
1571 for (i = 0; i < mea->mea_count; i++) {
1572 memset(op_data2, 0, sizeof(*op_data2));
1573 op_data2->op_fid1 = mea->mea_ids[i];
1574 op_data2->op_bias = 0;
1576 tgt = lmv_find_target(lmv, &op_data2->op_fid1);
1578 GOTO(cleanup, rc = PTR_ERR(tgt));
1580 if (tgt->ltd_exp == NULL)
1583 rc = md_enqueue(tgt->ltd_exp, einfo, it, op_data2,
1584 lockh + i, lmm, lmmsize, NULL, 0);
1586 CDEBUG(D_INODE, "Take lock on slave "DFID" -> %d/%d\n",
1587 PFID(&mea->mea_ids[i]), rc, it->d.lustre.it_status);
1592 if (it->d.lustre.it_data) {
1593 struct ptlrpc_request *req;
1594 req = (struct ptlrpc_request *)it->d.lustre.it_data;
1595 ptlrpc_req_finished(req);
1598 if (it->d.lustre.it_status)
1599 GOTO(cleanup, rc = it->d.lustre.it_status);
1604 OBD_FREE_PTR(op_data2);
1608 * Drop all taken locks.
1611 if (lockh[i].cookie)
1612 ldlm_lock_decref(lockh + i, einfo->ei_mode);
1613 lockh[i].cookie = 0;
1620 lmv_enqueue_remote(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
1621 struct lookup_intent *it, struct md_op_data *op_data,
1622 struct lustre_handle *lockh, void *lmm, int lmmsize,
1623 int extra_lock_flags)
1625 struct ptlrpc_request *req = it->d.lustre.it_data;
1626 struct obd_device *obd = exp->exp_obd;
1627 struct lmv_obd *lmv = &obd->u.lmv;
1628 struct lustre_handle plock;
1629 struct lmv_tgt_desc *tgt;
1630 struct md_op_data *rdata;
1632 struct mdt_body *body;
1637 body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
1638 LASSERT(body != NULL);
1640 if (!(body->valid & OBD_MD_MDS))
1643 CDEBUG(D_INODE, "REMOTE_ENQUEUE '%s' on "DFID" -> "DFID"\n",
1644 LL_IT2STR(it), PFID(&op_data->op_fid1), PFID(&body->fid1));
1647 * We got LOOKUP lock, but we really need attrs.
1649 pmode = it->d.lustre.it_lock_mode;
1650 LASSERT(pmode != 0);
1651 memcpy(&plock, lockh, sizeof(plock));
1652 it->d.lustre.it_lock_mode = 0;
1653 it->d.lustre.it_data = NULL;
1656 it->d.lustre.it_disposition &= ~DISP_ENQ_COMPLETE;
1657 ptlrpc_req_finished(req);
1659 tgt = lmv_find_target(lmv, &fid1);
1661 GOTO(out, rc = PTR_ERR(tgt));
1663 OBD_ALLOC_PTR(rdata);
1665 GOTO(out, rc = -ENOMEM);
1667 rdata->op_fid1 = fid1;
1668 rdata->op_bias = MDS_CROSS_REF;
1670 rc = md_enqueue(tgt->ltd_exp, einfo, it, rdata, lockh,
1671 lmm, lmmsize, NULL, extra_lock_flags);
1672 OBD_FREE_PTR(rdata);
1675 ldlm_lock_decref(&plock, pmode);
1680 lmv_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
1681 struct lookup_intent *it, struct md_op_data *op_data,
1682 struct lustre_handle *lockh, void *lmm, int lmmsize,
1683 struct ptlrpc_request **req, int extra_lock_flags)
1685 struct obd_device *obd = exp->exp_obd;
1686 struct lmv_obd *lmv = &obd->u.lmv;
1687 struct lmv_tgt_desc *tgt;
1688 struct lmv_object *obj;
1693 rc = lmv_check_connect(obd);
1697 CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID"\n",
1698 LL_IT2STR(it), PFID(&op_data->op_fid1));
1700 if (op_data->op_mea1 && it && it->it_op == IT_UNLINK) {
1701 rc = lmv_enqueue_slaves(exp, einfo, it, op_data,
1702 lockh, lmm, lmmsize);
1706 obj = lmv_object_find(obd, &op_data->op_fid1);
1707 if (obj && op_data->op_namelen) {
1708 sidx = raw_name2idx(obj->lo_hashtype,
1710 (char *)op_data->op_name,
1711 op_data->op_namelen);
1712 op_data->op_fid1 = obj->lo_stripes[sidx].ls_fid;
1713 tgt = lmv_get_target(lmv, obj->lo_stripes[sidx].ls_mds);
1715 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1718 lmv_object_put(obj);
1721 RETURN(PTR_ERR(tgt));
1723 CDEBUG(D_INODE, "ENQUEUE '%s' on "DFID" -> mds #%d\n",
1724 LL_IT2STR(it), PFID(&op_data->op_fid1), tgt->ltd_idx);
1726 rc = md_enqueue(tgt->ltd_exp, einfo, it, op_data, lockh,
1727 lmm, lmmsize, req, extra_lock_flags);
1729 if (rc == 0 && it && it->it_op == IT_OPEN) {
1730 rc = lmv_enqueue_remote(exp, einfo, it, op_data, lockh,
1731 lmm, lmmsize, extra_lock_flags);
1737 lmv_getattr_name(struct obd_export *exp, const struct lu_fid *fid,
1738 struct obd_capa *oc, const char *name, int namelen,
1739 obd_valid valid, int ea_size, __u32 suppgid,
1740 struct ptlrpc_request **request)
1742 struct ptlrpc_request *req = NULL;
1743 struct obd_device *obd = exp->exp_obd;
1744 struct lmv_obd *lmv = &obd->u.lmv;
1745 struct lu_fid rid = *fid;
1746 struct lmv_tgt_desc *tgt;
1747 struct mdt_body *body;
1748 struct lmv_object *obj;
1754 rc = lmv_check_connect(obd);
1761 obj = lmv_object_find(obd, &rid);
1763 sidx = raw_name2idx(obj->lo_hashtype, obj->lo_objcount,
1765 rid = obj->lo_stripes[sidx].ls_fid;
1766 tgt = lmv_get_target(lmv, obj->lo_stripes[sidx].ls_mds);
1767 valid &= ~OBD_MD_FLCKSPLIT;
1768 lmv_object_put(obj);
1770 tgt = lmv_find_target(lmv, &rid);
1771 valid |= OBD_MD_FLCKSPLIT;
1774 RETURN(PTR_ERR(tgt));
1776 CDEBUG(D_INODE, "GETATTR_NAME for %*s on "DFID" - "DFID" -> mds #%d\n",
1777 namelen, name, PFID(fid), PFID(&rid), tgt->ltd_idx);
1779 rc = md_getattr_name(tgt->ltd_exp, &rid, oc, name, namelen, valid,
1780 ea_size, suppgid, request);
1782 body = req_capsule_server_get(&(*request)->rq_pill,
1784 LASSERT(body != NULL);
1786 if (body->valid & OBD_MD_MDS) {
1788 CDEBUG(D_INODE, "Request attrs for "DFID"\n",
1791 tgt = lmv_find_target(lmv, &rid);
1793 ptlrpc_req_finished(*request);
1794 RETURN(PTR_ERR(tgt));
1797 rc = md_getattr_name(tgt->ltd_exp, &rid, NULL, NULL,
1798 1, valid | OBD_MD_FLCROSSREF,
1799 ea_size, suppgid, &req);
1800 ptlrpc_req_finished(*request);
1803 } else if (rc == -ERESTART) {
1804 LASSERT(*request != NULL);
1805 DEBUG_REQ(D_WARNING|D_RPCTRACE, *request,
1806 "Got -ERESTART during getattr!\n");
1807 ptlrpc_req_finished(*request);
1811 * Directory got split. Time to update local object and repeat
1812 * the request with proper MDS.
1814 rc = lmv_handle_split(exp, &rid);
1821 #define md_op_data_fid(op_data, fl) \
1822 (fl == MF_MDC_CANCEL_FID1 ? &op_data->op_fid1 : \
1823 fl == MF_MDC_CANCEL_FID2 ? &op_data->op_fid2 : \
1824 fl == MF_MDC_CANCEL_FID3 ? &op_data->op_fid3 : \
1825 fl == MF_MDC_CANCEL_FID4 ? &op_data->op_fid4 : \
1828 static int lmv_early_cancel_slaves(struct obd_export *exp,
1829 struct md_op_data *op_data, int op_tgt,
1830 ldlm_mode_t mode, int bits, int flag)
1832 struct obd_device *obd = exp->exp_obd;
1833 struct lmv_obd *lmv = &obd->u.lmv;
1834 ldlm_policy_data_t policy = {{0}};
1835 struct lu_fid *op_fid;
1836 struct lu_fid *st_fid;
1837 struct lmv_tgt_desc *tgt;
1838 struct lmv_object *obj;
1843 op_fid = md_op_data_fid(op_data, flag);
1844 if (!fid_is_sane(op_fid))
1847 obj = lmv_object_find(obd, op_fid);
1851 policy.l_inodebits.bits = bits;
1852 for (i = 0; i < obj->lo_objcount; i++) {
1853 tgt = lmv_get_target(lmv, obj->lo_stripes[i].ls_mds);
1854 st_fid = &obj->lo_stripes[i].ls_fid;
1855 if (op_tgt != tgt->ltd_idx) {
1856 CDEBUG(D_INODE, "EARLY_CANCEL slave "DFID" -> mds #%d\n",
1857 PFID(st_fid), tgt->ltd_idx);
1858 rc = md_cancel_unused(tgt->ltd_exp, st_fid, &policy,
1859 mode, LDLM_FL_ASYNC, NULL);
1861 GOTO(out_put_obj, rc);
1864 "EARLY_CANCEL skip operation target %d on "DFID"\n",
1865 op_tgt, PFID(st_fid));
1867 * Do not cancel locks for operation target, they will
1868 * be handled later in underlaying layer when calling
1869 * function we run on behalf of.
1872 op_data->op_flags |= flag;
1877 lmv_object_put(obj);
1881 static int lmv_early_cancel(struct obd_export *exp, struct md_op_data *op_data,
1882 int op_tgt, ldlm_mode_t mode, int bits, int flag)
1884 struct lu_fid *fid = md_op_data_fid(op_data, flag);
1885 struct obd_device *obd = exp->exp_obd;
1886 struct lmv_obd *lmv = &obd->u.lmv;
1887 struct lmv_tgt_desc *tgt;
1888 ldlm_policy_data_t policy = {{0}};
1889 struct lmv_object *obj;
1893 if (!fid_is_sane(fid))
1896 obj = lmv_object_find(obd, fid);
1898 rc = lmv_early_cancel_slaves(exp, op_data, op_tgt, mode,
1900 lmv_object_put(obj);
1902 tgt = lmv_find_target(lmv, fid);
1904 RETURN(PTR_ERR(tgt));
1906 if (tgt->ltd_idx != op_tgt) {
1907 CDEBUG(D_INODE, "EARLY_CANCEL on "DFID"\n", PFID(fid));
1908 policy.l_inodebits.bits = bits;
1909 rc = md_cancel_unused(tgt->ltd_exp, fid, &policy,
1910 mode, LDLM_FL_ASYNC, NULL);
1913 "EARLY_CANCEL skip operation target %d on "DFID"\n",
1915 op_data->op_flags |= flag;
1924 * llite passes fid of an target inode in op_data->op_fid1 and id of directory in
1927 static int lmv_link(struct obd_export *exp, struct md_op_data *op_data,
1928 struct ptlrpc_request **request)
1930 struct obd_device *obd = exp->exp_obd;
1931 struct lmv_obd *lmv = &obd->u.lmv;
1932 struct lmv_tgt_desc *tgt;
1933 struct lmv_object *obj;
1940 rc = lmv_check_connect(obd);
1947 LASSERT(op_data->op_namelen != 0);
1949 CDEBUG(D_INODE, "LINK "DFID":%*s to "DFID"\n",
1950 PFID(&op_data->op_fid2), op_data->op_namelen,
1951 op_data->op_name, PFID(&op_data->op_fid1));
1953 obj = lmv_object_find(obd, &op_data->op_fid2);
1955 sidx = raw_name2idx(obj->lo_hashtype,
1958 op_data->op_namelen);
1959 op_data->op_fid2 = obj->lo_stripes[sidx].ls_fid;
1960 mds = obj->lo_stripes[sidx].ls_mds;
1961 lmv_object_put(obj);
1963 rc = lmv_fld_lookup(lmv, &op_data->op_fid2, &mds);
1968 CDEBUG(D_INODE, "Forward to mds #%x ("DFID")\n",
1969 mds, PFID(&op_data->op_fid1));
1971 op_data->op_fsuid = cfs_curproc_fsuid();
1972 op_data->op_fsgid = cfs_curproc_fsgid();
1973 op_data->op_cap = cfs_curproc_cap_pack();
1974 tgt = lmv_get_target(lmv, mds);
1977 * Cancel UPDATE lock on child (fid1).
1979 op_data->op_flags |= MF_MDC_CANCEL_FID2;
1980 rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX,
1981 MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1);
1983 rc = md_link(tgt->ltd_exp, op_data, request);
1984 if (rc == -ERESTART) {
1985 LASSERT(*request != NULL);
1986 DEBUG_REQ(D_WARNING|D_RPCTRACE, *request,
1987 "Got -ERESTART during link!\n");
1988 ptlrpc_req_finished(*request);
1992 * Directory got split. Time to update local object and repeat
1993 * the request with proper MDS.
1995 rc = lmv_handle_split(exp, &op_data->op_fid2);
2003 static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data,
2004 const char *old, int oldlen, const char *new, int newlen,
2005 struct ptlrpc_request **request)
2007 struct obd_device *obd = exp->exp_obd;
2008 struct lmv_obd *lmv = &obd->u.lmv;
2009 struct lmv_tgt_desc *src_tgt;
2010 struct lmv_tgt_desc *tgt_tgt;
2014 struct lmv_object *obj;
2019 LASSERT(oldlen != 0);
2021 CDEBUG(D_INODE, "RENAME %*s in "DFID" to %*s in "DFID"\n",
2022 oldlen, old, PFID(&op_data->op_fid1),
2023 newlen, new, PFID(&op_data->op_fid2));
2025 rc = lmv_check_connect(obd);
2032 obj = lmv_object_find(obd, &op_data->op_fid1);
2034 sidx = raw_name2idx(obj->lo_hashtype, obj->lo_objcount,
2035 (char *)old, oldlen);
2036 op_data->op_fid1 = obj->lo_stripes[sidx].ls_fid;
2037 mds1 = obj->lo_stripes[sidx].ls_mds;
2038 CDEBUG(D_INODE, "Parent obj "DFID"\n", PFID(&op_data->op_fid1));
2039 lmv_object_put(obj);
2041 rc = lmv_fld_lookup(lmv, &op_data->op_fid1, &mds1);
2046 obj = lmv_object_find(obd, &op_data->op_fid2);
2049 * Directory is already split, so we have to forward request to
2052 sidx = raw_name2idx(obj->lo_hashtype, obj->lo_objcount,
2053 (char *)new, newlen);
2055 mds2 = obj->lo_stripes[sidx].ls_mds;
2056 op_data->op_fid2 = obj->lo_stripes[sidx].ls_fid;
2057 CDEBUG(D_INODE, "Parent obj "DFID"\n", PFID(&op_data->op_fid2));
2058 lmv_object_put(obj);
2060 rc = lmv_fld_lookup(lmv, &op_data->op_fid2, &mds2);
2065 op_data->op_fsuid = cfs_curproc_fsuid();
2066 op_data->op_fsgid = cfs_curproc_fsgid();
2067 op_data->op_cap = cfs_curproc_cap_pack();
2069 src_tgt = lmv_get_target(lmv, mds1);
2070 tgt_tgt = lmv_get_target(lmv, mds2);
2073 * LOOKUP lock on src child (fid3) should also be cancelled for
2074 * src_tgt in mdc_rename.
2076 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
2079 * Cancel UPDATE locks on tgt parent (fid2), tgt_tgt is its
2082 rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
2083 LCK_EX, MDS_INODELOCK_UPDATE,
2084 MF_MDC_CANCEL_FID2);
2087 * Cancel LOOKUP locks on tgt child (fid4) for parent tgt_tgt.
2090 rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
2091 LCK_EX, MDS_INODELOCK_LOOKUP,
2092 MF_MDC_CANCEL_FID4);
2096 * Cancel all the locks on tgt child (fid4).
2099 rc = lmv_early_cancel(exp, op_data, src_tgt->ltd_idx,
2100 LCK_EX, MDS_INODELOCK_FULL,
2101 MF_MDC_CANCEL_FID4);
2104 rc = md_rename(src_tgt->ltd_exp, op_data, old, oldlen,
2105 new, newlen, request);
2107 if (rc == -ERESTART) {
2108 LASSERT(*request != NULL);
2109 DEBUG_REQ(D_WARNING|D_RPCTRACE, *request,
2110 "Got -ERESTART during rename!\n");
2111 ptlrpc_req_finished(*request);
2115 * Directory got split. Time to update local object and repeat
2116 * the request with proper MDS.
2118 rc = lmv_handle_split(exp, &op_data->op_fid1);
2125 static int lmv_setattr(struct obd_export *exp, struct md_op_data *op_data,
2126 void *ea, int ealen, void *ea2, int ea2len,
2127 struct ptlrpc_request **request,
2128 struct md_open_data **mod)
2130 struct obd_device *obd = exp->exp_obd;
2131 struct lmv_obd *lmv = &obd->u.lmv;
2132 struct ptlrpc_request *req;
2133 struct lmv_tgt_desc *tgt;
2134 struct lmv_object *obj;
2139 rc = lmv_check_connect(obd);
2143 obj = lmv_object_find(obd, &op_data->op_fid1);
2145 CDEBUG(D_INODE, "SETATTR for "DFID", valid 0x%x%s\n",
2146 PFID(&op_data->op_fid1), op_data->op_attr.ia_valid,
2147 obj ? ", split" : "");
2149 op_data->op_flags |= MF_MDC_CANCEL_FID1;
2151 for (i = 0; i < obj->lo_objcount; i++) {
2152 op_data->op_fid1 = obj->lo_stripes[i].ls_fid;
2154 tgt = lmv_get_target(lmv, obj->lo_stripes[i].ls_mds);
2160 rc = md_setattr(tgt->ltd_exp, op_data, ea, ealen,
2161 ea2, ea2len, &req, mod);
2163 if (lu_fid_eq(&obj->lo_fid, &obj->lo_stripes[i].ls_fid)) {
2165 * This is master object and this request should
2166 * be returned back to llite.
2170 ptlrpc_req_finished(req);
2176 lmv_object_put(obj);
2178 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2180 RETURN(PTR_ERR(tgt));
2182 rc = md_setattr(tgt->ltd_exp, op_data, ea, ealen, ea2,
2183 ea2len, request, mod);
2188 static int lmv_sync(struct obd_export *exp, const struct lu_fid *fid,
2189 struct obd_capa *oc, struct ptlrpc_request **request)
2191 struct obd_device *obd = exp->exp_obd;
2192 struct lmv_obd *lmv = &obd->u.lmv;
2193 struct lmv_tgt_desc *tgt;
2197 rc = lmv_check_connect(obd);
2201 tgt = lmv_find_target(lmv, fid);
2203 RETURN(PTR_ERR(tgt));
2205 rc = md_sync(tgt->ltd_exp, fid, oc, request);
2210 * Main purpose of LMV blocking ast is to remove split directory LMV
2211 * presentation object (struct lmv_object) attached to the lock being revoked.
2213 int lmv_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
2214 void *data, int flag)
2216 struct lustre_handle lockh;
2217 struct lmv_object *obj;
2222 case LDLM_CB_BLOCKING:
2223 ldlm_lock2handle(lock, &lockh);
2224 rc = ldlm_cli_cancel(&lockh);
2226 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
2230 case LDLM_CB_CANCELING:
2232 * Time to drop cached attrs for split directory object
2234 obj = lock->l_ast_data;
2236 CDEBUG(D_INODE, "Cancel %s on "LPU64"/"LPU64
2237 ", master "DFID"\n",
2238 lock->l_resource->lr_name.name[3] == 1 ?
2239 "LOOKUP" : "UPDATE",
2240 lock->l_resource->lr_name.name[0],
2241 lock->l_resource->lr_name.name[1],
2242 PFID(&obj->lo_fid));
2243 lmv_object_put(obj);
2252 static void lmv_hash_adjust(__u64 *hash, __u64 hash_adj)
2256 val = le64_to_cpu(*hash);
2258 val += MAX_HASH_SIZE;
2259 if (val != DIR_END_OFF)
2260 *hash = cpu_to_le64(val - hash_adj);
2263 static __u32 lmv_node_rank(struct obd_export *exp, const struct lu_fid *fid)
2266 struct obd_import *imp;
2269 * XXX: to get nid we assume that underlying obd device is mdc.
2271 imp = class_exp2cliimp(exp);
2272 id = imp->imp_connection->c_self + fid_flatten(fid);
2274 CDEBUG(D_INODE, "Readpage node rank: "LPX64" "DFID" "LPX64" "LPX64"\n",
2275 imp->imp_connection->c_self, PFID(fid), id, id ^ (id >> 32));
2277 return id ^ (id >> 32);
2280 static int lmv_readpage(struct obd_export *exp, const struct lu_fid *fid,
2281 struct obd_capa *oc, __u64 offset64, struct page *page,
2282 struct ptlrpc_request **request)
2284 struct obd_device *obd = exp->exp_obd;
2285 struct lmv_obd *lmv = &obd->u.lmv;
2286 struct lu_fid rid = *fid;
2287 struct lmv_object *obj;
2297 struct lmv_stripe *los;
2298 struct lmv_tgt_desc *tgt;
2299 struct lu_dirpage *dp;
2300 struct lu_dirent *ent;
2305 rc = lmv_check_connect(obd);
2309 CDEBUG(D_INODE, "READPAGE at "LPX64" from "DFID"\n", offset, PFID(&rid));
2312 * This case handle directory lookup in clustered metadata case (i.e.
2313 * split directory is located on multiple md servers.)
2314 * each server keeps directory entries for certain range of hashes.
2315 * E.g. we have N server and suppose hash range is 0 to MAX_HASH.
2316 * first server will keep records with hashes [ 0 ... MAX_HASH / N - 1],
2317 * second one with hashes [MAX_HASH / N ... 2 * MAX_HASH / N] and
2319 * readdir can simply start reading entries from 0 - N server in
2320 * order but that will not scale well as all client will request dir in
2321 * to server in same order.
2322 * Following algorithm does optimization:
2323 * Instead of doing readdir in 1, 2, ...., N order, client with a
2324 * rank R does readdir in R, R + 1, ..., N, 1, ... R - 1 order.
2325 * (every client has rank R)
2326 * But ll_readdir() expect offset range [0 to MAX_HASH/N) but
2327 * since client ask dir from MDS{R} client has pages with offsets
2328 * [R*MAX_HASH/N ... (R + 1)*MAX_HASH/N] there for we do hash_adj
2329 * on hash values that we get.
2331 obj = lmv_object_find_lock(obd, fid);
2333 nr = obj->lo_objcount;
2335 seg_size = MAX_HASH_SIZE;
2336 do_div(seg_size, nr);
2337 los = obj->lo_stripes;
2338 tgt = lmv_get_target(lmv, los[0].ls_mds);
2339 rank = lmv_node_rank(tgt->ltd_exp, fid) % nr;
2341 do_div(tgt_tmp, seg_size);
2342 tgt0_idx = do_div(tgt_tmp, nr);
2343 tgt_idx = (tgt0_idx + rank) % nr;
2345 if (tgt_idx < tgt0_idx)
2349 * Last segment has unusual length due to division
2352 hash_adj = MAX_HASH_SIZE - seg_size * nr;
2356 hash_adj += rank * seg_size;
2358 CDEBUG(D_INODE, "Readpage hash adjustment: %x "LPX64" "
2359 LPX64"/%x -> "LPX64"/%x\n", rank, hash_adj,
2360 offset, tgt0_idx, offset + hash_adj, tgt_idx);
2362 offset = (offset + hash_adj) & MAX_HASH_SIZE;
2363 rid = obj->lo_stripes[tgt_idx].ls_fid;
2364 tgt = lmv_get_target(lmv, los[tgt_idx].ls_mds);
2366 CDEBUG(D_INODE, "Forward to "DFID" with offset %lu i %d\n",
2367 PFID(&rid), (unsigned long)offset, tgt_idx);
2369 tgt = lmv_find_target(lmv, &rid);
2372 GOTO(cleanup, rc = PTR_ERR(tgt));
2374 rc = md_readpage(tgt->ltd_exp, &rid, oc, offset, page, request);
2378 dp = cfs_kmap(page);
2380 lmv_hash_adjust(&dp->ldp_hash_start, hash_adj);
2381 lmv_hash_adjust(&dp->ldp_hash_end, hash_adj);
2382 LASSERT(le64_to_cpu(dp->ldp_hash_start) <= offset64);
2384 for (ent = lu_dirent_start(dp); ent != NULL;
2385 ent = lu_dirent_next(ent))
2386 lmv_hash_adjust(&ent->lde_hash, hash_adj);
2388 if (tgt0_idx != nr - 1) {
2391 end = le64_to_cpu(dp->ldp_hash_end);
2392 if (end == DIR_END_OFF) {
2393 dp->ldp_hash_end = cpu_to_le32(seg_size *
2396 ""DFID" reset end "LPX64" tgt %d\n",
2398 le64_to_cpu(dp->ldp_hash_end), tgt_idx);
2406 lmv_object_put_unlock(obj);
2410 static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data,
2411 struct ptlrpc_request **request)
2413 struct obd_device *obd = exp->exp_obd;
2414 struct lmv_obd *lmv = &obd->u.lmv;
2415 struct lmv_tgt_desc *tgt = NULL;
2416 struct lmv_object *obj;
2422 rc = lmv_check_connect(obd);
2429 LASSERT(op_data->op_namelen != 0);
2431 obj = lmv_object_find(obd, &op_data->op_fid1);
2433 sidx = raw_name2idx(obj->lo_hashtype,
2436 op_data->op_namelen);
2437 op_data->op_bias &= ~MDS_CHECK_SPLIT;
2438 op_data->op_fid1 = obj->lo_stripes[sidx].ls_fid;
2439 tgt = lmv_get_target(lmv,
2440 obj->lo_stripes[sidx].ls_mds);
2441 lmv_object_put(obj);
2442 CDEBUG(D_INODE, "UNLINK '%*s' in "DFID" -> %u\n",
2443 op_data->op_namelen, op_data->op_name,
2444 PFID(&op_data->op_fid1), sidx);
2448 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2450 RETURN(PTR_ERR(tgt));
2451 op_data->op_bias |= MDS_CHECK_SPLIT;
2454 op_data->op_fsuid = cfs_curproc_fsuid();
2455 op_data->op_fsgid = cfs_curproc_fsgid();
2456 op_data->op_cap = cfs_curproc_cap_pack();
2459 * If child's fid is given, cancel unused locks for it if it is from
2460 * another export than parent.
2462 * LOOKUP lock for child (fid3) should also be cancelled on parent
2463 * tgt_tgt in mdc_unlink().
2465 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
2468 * Cancel FULL locks on child (fid3).
2470 rc = lmv_early_cancel(exp, op_data, tgt->ltd_idx, LCK_EX,
2471 MDS_INODELOCK_FULL, MF_MDC_CANCEL_FID3);
2474 rc = md_unlink(tgt->ltd_exp, op_data, request);
2476 if (rc == -ERESTART) {
2477 LASSERT(*request != NULL);
2478 DEBUG_REQ(D_WARNING|D_RPCTRACE, *request,
2479 "Got -ERESTART during unlink!\n");
2480 ptlrpc_req_finished(*request);
2484 * Directory got split. Time to update local object and repeat
2485 * the request with proper MDS.
2487 rc = lmv_handle_split(exp, &op_data->op_fid1);
2494 static int lmv_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
2499 case OBD_CLEANUP_EARLY:
2500 /* XXX: here should be calling obd_precleanup() down to
2503 case OBD_CLEANUP_EXPORTS:
2504 rc = obd_llog_finish(obd, 0);
2506 CERROR("failed to cleanup llogging subsystems\n");
2514 static int lmv_get_info(struct obd_export *exp, __u32 keylen,
2515 void *key, __u32 *vallen, void *val,
2516 struct lov_stripe_md *lsm)
2518 struct obd_device *obd;
2519 struct lmv_obd *lmv;
2523 obd = class_exp2obd(exp);
2525 CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n",
2526 exp->exp_handle.h_cookie);
2531 if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) {
2532 struct lmv_tgt_desc *tgts;
2535 rc = lmv_check_connect(obd);
2539 LASSERT(*vallen == sizeof(__u32));
2540 for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count;
2544 * All tgts should be connected when this gets called.
2546 if (!tgts || !tgts->ltd_exp) {
2547 CERROR("target not setup?\n");
2551 if (!obd_get_info(tgts->ltd_exp, keylen, key,
2556 } else if (KEY_IS(KEY_MAX_EASIZE) || KEY_IS(KEY_CONN_DATA)) {
2557 rc = lmv_check_connect(obd);
2562 * Forwarding this request to first MDS, it should know LOV
2565 rc = obd_get_info(lmv->tgts[0].ltd_exp, keylen, key,
2567 if (!rc && KEY_IS(KEY_CONN_DATA)) {
2568 exp->exp_connect_flags =
2569 ((struct obd_connect_data *)val)->ocd_connect_flags;
2574 CDEBUG(D_IOCTL, "Invalid key\n");
2578 int lmv_set_info_async(struct obd_export *exp, obd_count keylen,
2579 void *key, obd_count vallen, void *val,
2580 struct ptlrpc_request_set *set)
2582 struct lmv_tgt_desc *tgt;
2583 struct obd_device *obd;
2584 struct lmv_obd *lmv;
2588 obd = class_exp2obd(exp);
2590 CDEBUG(D_IOCTL, "Invalid client cookie "LPX64"\n",
2591 exp->exp_handle.h_cookie);
2596 if (KEY_IS(KEY_READ_ONLY) || KEY_IS(KEY_FLUSH_CTX) ||
2597 KEY_IS(KEY_INIT_RECOV_BACKUP)) {
2600 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2601 tgt = &lmv->tgts[i];
2606 err = obd_set_info_async(tgt->ltd_exp,
2607 keylen, key, vallen, val, set);
2618 int lmv_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
2619 struct lov_stripe_md *lsm)
2621 struct obd_device *obd = class_exp2obd(exp);
2622 struct lmv_obd *lmv = &obd->u.lmv;
2623 struct lmv_stripe_md *meap;
2624 struct lmv_stripe_md *lsmp;
2629 mea_size = lmv_get_easize(lmv);
2633 if (*lmmp && !lsm) {
2634 OBD_FREE(*lmmp, mea_size);
2639 if (*lmmp == NULL) {
2640 OBD_ALLOC(*lmmp, mea_size);
2648 lsmp = (struct lmv_stripe_md *)lsm;
2649 meap = (struct lmv_stripe_md *)*lmmp;
2651 if (lsmp->mea_magic != MEA_MAGIC_LAST_CHAR &&
2652 lsmp->mea_magic != MEA_MAGIC_ALL_CHARS)
2655 meap->mea_magic = cpu_to_le32(lsmp->mea_magic);
2656 meap->mea_count = cpu_to_le32(lsmp->mea_count);
2657 meap->mea_master = cpu_to_le32(lsmp->mea_master);
2659 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2660 meap->mea_ids[i] = meap->mea_ids[i];
2661 fid_cpu_to_le(&meap->mea_ids[i], &meap->mea_ids[i]);
2667 int lmv_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
2668 struct lov_mds_md *lmm, int lmm_size)
2670 struct obd_device *obd = class_exp2obd(exp);
2671 struct lmv_stripe_md **tmea = (struct lmv_stripe_md **)lsmp;
2672 struct lmv_stripe_md *mea = (struct lmv_stripe_md *)lmm;
2673 struct lmv_obd *lmv = &obd->u.lmv;
2679 mea_size = lmv_get_easize(lmv);
2683 if (*lsmp != NULL && lmm == NULL) {
2684 OBD_FREE(*tmea, mea_size);
2689 LASSERT(mea_size == lmm_size);
2691 OBD_ALLOC(*tmea, mea_size);
2698 if (mea->mea_magic == MEA_MAGIC_LAST_CHAR ||
2699 mea->mea_magic == MEA_MAGIC_ALL_CHARS ||
2700 mea->mea_magic == MEA_MAGIC_HASH_SEGMENT)
2702 magic = le32_to_cpu(mea->mea_magic);
2705 * Old mea is not handled here.
2707 CERROR("Old not supportable EA is found\n");
2711 (*tmea)->mea_magic = magic;
2712 (*tmea)->mea_count = le32_to_cpu(mea->mea_count);
2713 (*tmea)->mea_master = le32_to_cpu(mea->mea_master);
2715 for (i = 0; i < (*tmea)->mea_count; i++) {
2716 (*tmea)->mea_ids[i] = mea->mea_ids[i];
2717 fid_le_to_cpu(&(*tmea)->mea_ids[i], &(*tmea)->mea_ids[i]);
2722 static int lmv_cancel_unused(struct obd_export *exp, const struct lu_fid *fid,
2723 ldlm_policy_data_t *policy, ldlm_mode_t mode,
2724 int flags, void *opaque)
2726 struct obd_device *obd = exp->exp_obd;
2727 struct lmv_obd *lmv = &obd->u.lmv;
2733 LASSERT(fid != NULL);
2735 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2736 if (!lmv->tgts[i].ltd_exp || !lmv->tgts[i].ltd_active)
2739 err = md_cancel_unused(lmv->tgts[i].ltd_exp, fid,
2740 policy, mode, flags, opaque);
2747 int lmv_set_lock_data(struct obd_export *exp, __u64 *lockh, void *data,
2750 struct obd_device *obd = exp->exp_obd;
2751 struct lmv_obd *lmv = &obd->u.lmv;
2755 rc = md_set_lock_data(lmv->tgts[0].ltd_exp, lockh, data, bits);
2759 ldlm_mode_t lmv_lock_match(struct obd_export *exp, int flags,
2760 const struct lu_fid *fid, ldlm_type_t type,
2761 ldlm_policy_data_t *policy, ldlm_mode_t mode,
2762 struct lustre_handle *lockh)
2764 struct obd_device *obd = exp->exp_obd;
2765 struct lmv_obd *lmv = &obd->u.lmv;
2770 CDEBUG(D_INODE, "Lock match for "DFID"\n", PFID(fid));
2773 * With CMD every object can have two locks in different namespaces:
2774 * lookup lock in space of mds storing direntry and update/open lock in
2775 * space of mds storing inode. Thus we check all targets, not only that
2776 * one fid was created in.
2778 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2779 rc = md_lock_match(lmv->tgts[i].ltd_exp, flags, fid,
2780 type, policy, mode, lockh);
2788 int lmv_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
2789 struct obd_export *dt_exp, struct obd_export *md_exp,
2790 struct lustre_md *md)
2792 struct obd_device *obd = exp->exp_obd;
2793 struct lmv_obd *lmv = &obd->u.lmv;
2796 rc = md_get_lustre_md(lmv->tgts[0].ltd_exp, req, dt_exp, md_exp, md);
2800 int lmv_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
2802 struct obd_device *obd = exp->exp_obd;
2803 struct lmv_obd *lmv = &obd->u.lmv;
2807 obd_free_memmd(exp, (void *)&md->mea);
2808 RETURN(md_free_lustre_md(lmv->tgts[0].ltd_exp, md));
2811 int lmv_set_open_replay_data(struct obd_export *exp,
2812 struct obd_client_handle *och,
2813 struct ptlrpc_request *open_req)
2815 struct obd_device *obd = exp->exp_obd;
2816 struct lmv_obd *lmv = &obd->u.lmv;
2817 struct lmv_tgt_desc *tgt;
2820 tgt = lmv_find_target(lmv, &och->och_fid);
2822 RETURN(PTR_ERR(tgt));
2824 RETURN(md_set_open_replay_data(tgt->ltd_exp, och, open_req));
2827 int lmv_clear_open_replay_data(struct obd_export *exp,
2828 struct obd_client_handle *och)
2830 struct obd_device *obd = exp->exp_obd;
2831 struct lmv_obd *lmv = &obd->u.lmv;
2832 struct lmv_tgt_desc *tgt;
2835 tgt = lmv_find_target(lmv, &och->och_fid);
2837 RETURN(PTR_ERR(tgt));
2839 RETURN(md_clear_open_replay_data(tgt->ltd_exp, och));
2842 static int lmv_get_remote_perm(struct obd_export *exp,
2843 const struct lu_fid *fid,
2844 struct obd_capa *oc, __u32 suppgid,
2845 struct ptlrpc_request **request)
2847 struct obd_device *obd = exp->exp_obd;
2848 struct lmv_obd *lmv = &obd->u.lmv;
2849 struct lmv_tgt_desc *tgt;
2853 rc = lmv_check_connect(obd);
2857 tgt = lmv_find_target(lmv, fid);
2859 RETURN(PTR_ERR(tgt));
2861 rc = md_get_remote_perm(tgt->ltd_exp, fid, oc, suppgid, request);
2865 static int lmv_renew_capa(struct obd_export *exp, struct obd_capa *oc,
2868 struct obd_device *obd = exp->exp_obd;
2869 struct lmv_obd *lmv = &obd->u.lmv;
2870 struct lmv_tgt_desc *tgt;
2874 rc = lmv_check_connect(obd);
2878 tgt = lmv_find_target(lmv, &oc->c_capa.lc_fid);
2880 RETURN(PTR_ERR(tgt));
2882 rc = md_renew_capa(tgt->ltd_exp, oc, cb);
2886 int lmv_unpack_capa(struct obd_export *exp, struct ptlrpc_request *req,
2887 const struct req_msg_field *field, struct obd_capa **oc)
2889 struct obd_device *obd = exp->exp_obd;
2890 struct lmv_obd *lmv = &obd->u.lmv;
2894 rc = md_unpack_capa(lmv->tgts[0].ltd_exp, req, field, oc);
2898 int lmv_intent_getattr_async(struct obd_export *exp,
2899 struct md_enqueue_info *minfo,
2900 struct ldlm_enqueue_info *einfo)
2902 struct md_op_data *op_data = &minfo->mi_data;
2903 struct obd_device *obd = exp->exp_obd;
2904 struct lmv_obd *lmv = &obd->u.lmv;
2905 struct lmv_object *obj;
2906 struct lmv_tgt_desc *tgt;
2911 rc = lmv_check_connect(obd);
2915 if (!fid_is_sane(&op_data->op_fid2)) {
2916 obj = lmv_object_find(obd, &op_data->op_fid1);
2917 if (obj && op_data->op_namelen) {
2918 sidx = raw_name2idx(obj->lo_hashtype,
2920 (char *)op_data->op_name,
2921 op_data->op_namelen);
2922 op_data->op_fid1 = obj->lo_stripes[sidx].ls_fid;
2923 tgt = lmv_get_target(lmv,
2924 obj->lo_stripes[sidx].ls_mds);
2926 "Choose slave dir ("DFID") -> mds #%d\n",
2927 PFID(&op_data->op_fid1), tgt->ltd_idx);
2929 tgt = lmv_find_target(lmv, &op_data->op_fid1);
2932 lmv_object_put(obj);
2934 op_data->op_fid1 = op_data->op_fid2;
2935 tgt = lmv_find_target(lmv, &op_data->op_fid2);
2936 op_data->op_bias = MDS_CROSS_REF;
2938 * Unfortunately, we have to lie to MDC/MDS to retrieve
2939 * attributes llite needs.
2941 if (minfo->mi_it.it_op & IT_LOOKUP)
2942 minfo->mi_it.it_op = IT_GETATTR;
2946 RETURN(PTR_ERR(tgt));
2948 rc = md_intent_getattr_async(tgt->ltd_exp, minfo, einfo);
2952 int lmv_revalidate_lock(struct obd_export *exp,
2953 struct lookup_intent *it,
2956 struct obd_device *obd = exp->exp_obd;
2957 struct lmv_obd *lmv = &obd->u.lmv;
2958 struct lmv_tgt_desc *tgt;
2962 rc = lmv_check_connect(obd);
2966 tgt = lmv_find_target(lmv, fid);
2968 RETURN(PTR_ERR(tgt));
2970 rc = md_revalidate_lock(tgt->ltd_exp, it, fid);
2975 struct obd_ops lmv_obd_ops = {
2976 .o_owner = THIS_MODULE,
2977 .o_setup = lmv_setup,
2978 .o_cleanup = lmv_cleanup,
2979 .o_precleanup = lmv_precleanup,
2980 .o_process_config = lmv_process_config,
2981 .o_connect = lmv_connect,
2982 .o_disconnect = lmv_disconnect,
2983 .o_statfs = lmv_statfs,
2984 .o_get_info = lmv_get_info,
2985 .o_set_info_async = lmv_set_info_async,
2986 .o_packmd = lmv_packmd,
2987 .o_unpackmd = lmv_unpackmd,
2988 .o_notify = lmv_notify,
2989 .o_get_uuid = lmv_get_uuid,
2990 .o_iocontrol = lmv_iocontrol,
2991 .o_fid_delete = lmv_fid_delete
2994 struct md_ops lmv_md_ops = {
2995 .m_getstatus = lmv_getstatus,
2996 .m_change_cbdata = lmv_change_cbdata,
2997 .m_close = lmv_close,
2998 .m_create = lmv_create,
2999 .m_done_writing = lmv_done_writing,
3000 .m_enqueue = lmv_enqueue,
3001 .m_getattr = lmv_getattr,
3002 .m_getxattr = lmv_getxattr,
3003 .m_getattr_name = lmv_getattr_name,
3004 .m_intent_lock = lmv_intent_lock,
3006 .m_rename = lmv_rename,
3007 .m_setattr = lmv_setattr,
3008 .m_setxattr = lmv_setxattr,
3010 .m_readpage = lmv_readpage,
3011 .m_unlink = lmv_unlink,
3012 .m_init_ea_size = lmv_init_ea_size,
3013 .m_cancel_unused = lmv_cancel_unused,
3014 .m_set_lock_data = lmv_set_lock_data,
3015 .m_lock_match = lmv_lock_match,
3016 .m_get_lustre_md = lmv_get_lustre_md,
3017 .m_free_lustre_md = lmv_free_lustre_md,
3018 .m_set_open_replay_data = lmv_set_open_replay_data,
3019 .m_clear_open_replay_data = lmv_clear_open_replay_data,
3020 .m_renew_capa = lmv_renew_capa,
3021 .m_unpack_capa = lmv_unpack_capa,
3022 .m_get_remote_perm = lmv_get_remote_perm,
3023 .m_intent_getattr_async = lmv_intent_getattr_async,
3024 .m_revalidate_lock = lmv_revalidate_lock
3027 static quota_interface_t *quota_interface;
3028 extern quota_interface_t lmv_quota_interface;
3030 int __init lmv_init(void)
3032 struct lprocfs_static_vars lvars;
3035 lmv_object_cache = cfs_mem_cache_create("lmv_objects",
3036 sizeof(struct lmv_object),
3038 if (!lmv_object_cache) {
3039 CERROR("Error allocating lmv objects cache\n");
3043 lprocfs_lmv_init_vars(&lvars);
3045 cfs_request_module("lquota");
3046 quota_interface = PORTAL_SYMBOL_GET(lmv_quota_interface);
3047 init_obd_quota_ops(quota_interface, &lmv_obd_ops);
3049 rc = class_register_type(&lmv_obd_ops, &lmv_md_ops,
3050 lvars.module_vars, LUSTRE_LMV_NAME, NULL);
3052 if (quota_interface)
3053 PORTAL_SYMBOL_PUT(lmv_quota_interface);
3054 cfs_mem_cache_destroy(lmv_object_cache);
3061 static void lmv_exit(void)
3063 if (quota_interface)
3064 PORTAL_SYMBOL_PUT(lmv_quota_interface);
3066 class_unregister_type(LUSTRE_LMV_NAME);
3068 LASSERTF(cfs_atomic_read(&lmv_object_count) == 0,
3069 "Can't free lmv objects cache, %d object(s) busy\n",
3070 cfs_atomic_read(&lmv_object_count));
3071 cfs_mem_cache_destroy(lmv_object_cache);
3074 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3075 MODULE_DESCRIPTION("Lustre Logical Metadata Volume OBD driver");
3076 MODULE_LICENSE("GPL");
3078 module_init(lmv_init);
3079 module_exit(lmv_exit);