1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002, 2003, 2004, 2005, 2006 Cluster File Systems, Inc.
6 * This file is part of Lustre, http://www.lustre.org.
8 * Lustre is free software; you can redistribute it and/or
9 * modify it under the terms of version 2 of the GNU General Public
10 * License as published by the Free Software Foundation.
12 * Lustre is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Lustre; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 # define EXPORT_SYMTAB
25 #define DEBUG_SUBSYSTEM S_LMV
27 #include <linux/slab.h>
28 #include <linux/module.h>
29 #include <linux/init.h>
30 #include <linux/slab.h>
31 #include <linux/pagemap.h>
33 #include <asm/div64.h>
34 #include <linux/seq_file.h>
35 #include <linux/namei.h>
37 #include <liblustre.h>
40 #include <linux/ext2_fs.h>
42 #include <lustre/lustre_idl.h>
43 #include <lustre_log.h>
44 #include <obd_support.h>
45 #include <lustre_lib.h>
46 #include <lustre_net.h>
47 #include <obd_class.h>
48 #include <lprocfs_status.h>
49 #include <lustre_lite.h>
50 #include <lustre_fid.h>
51 #include "lmv_internal.h"
53 /* not defined for liblustre building */
54 #if !defined(ATOMIC_INIT)
55 #define ATOMIC_INIT(val) { (val) }
59 cfs_mem_cache_t *obj_cache;
60 atomic_t obj_cache_count = ATOMIC_INIT(0);
62 static void lmv_activate_target(struct lmv_obd *lmv,
63 struct lmv_tgt_desc *tgt,
66 if (tgt->ltd_active == activate)
69 tgt->ltd_active = activate;
70 lmv->desc.ld_active_tgt_count += (activate ? 1 : -1);
75 * -EINVAL : UUID can't be found in the LMV's target list
76 * -ENOTCONN: The UUID is found, but the target connection is bad (!)
77 * -EBADF : The UUID is found, but the OBD of the wrong type (!)
79 static int lmv_set_mdc_active(struct lmv_obd *lmv, struct obd_uuid *uuid,
82 struct lmv_tgt_desc *tgt;
83 struct obd_device *obd;
87 CDEBUG(D_INFO, "Searching in lmv %p for uuid %s (activate=%d)\n",
88 lmv, uuid->uuid, activate);
90 spin_lock(&lmv->lmv_lock);
91 for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgt++) {
92 if (tgt->ltd_exp == NULL)
95 CDEBUG(D_INFO, "lmv idx %d is %s conn "LPX64"\n",
96 i, tgt->ltd_uuid.uuid, tgt->ltd_exp->exp_handle.h_cookie);
98 if (obd_uuid_equals(uuid, &tgt->ltd_uuid))
102 if (i == lmv->desc.ld_tgt_count)
103 GOTO(out_lmv_lock, rc = -EINVAL);
105 obd = class_exp2obd(tgt->ltd_exp);
107 GOTO(out_lmv_lock, rc = -ENOTCONN);
109 CDEBUG(D_INFO, "Found OBD %s=%s device %d (%p) type %s at LMV idx %d\n",
110 obd->obd_name, obd->obd_uuid.uuid, obd->obd_minor, obd,
111 obd->obd_type->typ_name, i);
112 LASSERT(strcmp(obd->obd_type->typ_name, LUSTRE_MDC_NAME) == 0);
114 if (tgt->ltd_active == activate) {
115 CDEBUG(D_INFO, "OBD %p already %sactive!\n", obd,
116 activate ? "" : "in");
117 GOTO(out_lmv_lock, rc);
120 CDEBUG(D_INFO, "Marking OBD %p %sactive\n",
121 obd, activate ? "" : "in");
123 lmv_activate_target(lmv, tgt, activate);
128 spin_unlock(&lmv->lmv_lock);
132 static int lmv_set_mdc_data(struct lmv_obd *lmv, struct obd_uuid *uuid,
133 struct obd_connect_data *data)
135 struct lmv_tgt_desc *tgt;
139 LASSERT(data != NULL);
141 spin_lock(&lmv->lmv_lock);
142 for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgt++) {
143 if (tgt->ltd_exp == NULL)
146 if (obd_uuid_equals(uuid, &tgt->ltd_uuid)) {
147 lmv->datas[tgt->ltd_idx] = *data;
151 spin_unlock(&lmv->lmv_lock);
155 static int lmv_notify(struct obd_device *obd, struct obd_device *watched,
156 enum obd_notify_event ev, void *data)
158 struct lmv_obd *lmv = &obd->u.lmv;
159 struct obd_uuid *uuid;
163 if (strcmp(watched->obd_type->typ_name, LUSTRE_MDC_NAME)) {
164 CERROR("unexpected notification of %s %s!\n",
165 watched->obd_type->typ_name,
170 uuid = &watched->u.cli.cl_target_uuid;
171 if (ev == OBD_NOTIFY_ACTIVE || ev == OBD_NOTIFY_INACTIVE) {
173 * Set MDC as active before notifying the observer, so the
174 * observer can use the MDC normally.
176 rc = lmv_set_mdc_active(lmv, uuid,
177 ev == OBD_NOTIFY_ACTIVE);
179 CERROR("%sactivation of %s failed: %d\n",
180 ev == OBD_NOTIFY_ACTIVE ? "" : "de",
184 } else if (ev == OBD_NOTIFY_OCD) {
185 struct obd_connect_data *conn_data =
186 &watched->u.cli.cl_import->imp_connect_data;
188 /* Set connect data to desired target, update
189 * exp_connect_flags. */
190 rc = lmv_set_mdc_data(lmv, uuid, conn_data);
192 CERROR("can't set connect data to target %s, rc %d\n",
198 * XXX: Make sure that ocd_connect_flags from all targets are
199 * the same. Otherwise one of MDTs runs wrong version or
200 * something like this. --umka
202 obd->obd_self_export->exp_connect_flags =
203 conn_data->ocd_connect_flags;
206 else if (ev == OBD_NOTIFY_DISCON) {
207 /* For disconnect event, flush fld cache for failout MDS case. */
208 fld_client_flush(&lmv->lmv_fld);
211 /* Pass the notification up the chain. */
212 if (obd->obd_observer)
213 rc = obd_notify(obd->obd_observer, watched, ev, data);
218 /* this is fake connect function. Its purpose is to initialize lmv and say
219 * caller that everything is okay. Real connection will be performed later. */
220 static int lmv_connect(const struct lu_env *env,
221 struct lustre_handle *conn, struct obd_device *obd,
222 struct obd_uuid *cluuid, struct obd_connect_data *data)
225 struct proc_dir_entry *lmv_proc_dir;
227 struct lmv_obd *lmv = &obd->u.lmv;
228 struct obd_export *exp;
232 rc = class_connect(conn, obd, cluuid);
234 CERROR("class_connection() returned %d\n", rc);
238 exp = class_conn2export(conn);
240 /* we don't want to actually do the underlying connections more than
241 * once, so keep track. */
243 if (lmv->refcount > 1) {
244 class_export_put(exp);
250 lmv->cluuid = *cluuid;
253 lmv->conn_data = *data;
256 lmv_proc_dir = lprocfs_register("target_obds", obd->obd_proc_entry,
258 if (IS_ERR(lmv_proc_dir)) {
259 CERROR("could not register /proc/fs/lustre/%s/%s/target_obds.",
260 obd->obd_type->typ_name, obd->obd_name);
265 /* all real clients should perform actual connection right away, because
266 * it is possible, that LMV will not have opportunity to connect targets
267 * and MDC stuff will be called directly, for instance while reading
268 * ../mdc/../kbytesfree procfs file, etc. */
269 if (data->ocd_connect_flags & OBD_CONNECT_REAL)
270 rc = lmv_check_connect(obd);
275 lprocfs_remove(&lmv_proc_dir);
282 static void lmv_set_timeouts(struct obd_device *obd)
284 struct lmv_tgt_desc *tgts;
289 if (lmv->server_timeout == 0)
292 if (lmv->connected == 0)
295 for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgts++) {
296 if (tgts->ltd_exp == NULL)
299 obd_set_info_async(tgts->ltd_exp, strlen("inter_mds"),
300 "inter_mds", 0, NULL, NULL);
304 static int lmv_init_ea_size(struct obd_export *exp, int easize,
305 int def_easize, int cookiesize)
307 struct obd_device *obd = exp->exp_obd;
308 struct lmv_obd *lmv = &obd->u.lmv;
309 int i, rc = 0, change = 0;
312 if (lmv->max_easize < easize) {
313 lmv->max_easize = easize;
316 if (lmv->max_def_easize < def_easize) {
317 lmv->max_def_easize = def_easize;
320 if (lmv->max_cookiesize < cookiesize) {
321 lmv->max_cookiesize = cookiesize;
327 if (lmv->connected == 0)
330 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
331 if (lmv->tgts[i].ltd_exp == NULL) {
332 CWARN("%s: NULL export for %d\n", obd->obd_name, i);
336 rc = md_init_ea_size(lmv->tgts[i].ltd_exp, easize, def_easize,
339 CERROR("obd_init_ea_size() failed on MDT target %d, "
340 "error %d.\n", i, rc);
347 #define MAX_STRING_SIZE 128
349 int lmv_connect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
351 struct lmv_obd *lmv = &obd->u.lmv;
352 struct obd_uuid *cluuid = &lmv->cluuid;
353 struct obd_connect_data *mdc_data = NULL;
354 struct obd_uuid lmv_mdc_uuid = { "LMV_MDC_UUID" };
355 struct lustre_handle conn = {0, };
356 struct obd_device *mdc_obd;
357 struct obd_export *mdc_exp;
358 struct lu_fld_target target;
361 struct proc_dir_entry *lmv_proc_dir;
365 /* for MDS: don't connect to yourself */
366 if (obd_uuid_equals(&tgt->ltd_uuid, cluuid)) {
367 CDEBUG(D_CONFIG, "don't connect back to %s\n", cluuid->uuid);
368 /* XXX - the old code didn't increment active tgt count.
373 mdc_obd = class_find_client_obd(&tgt->ltd_uuid, LUSTRE_MDC_NAME,
376 CERROR("target %s not attached\n", tgt->ltd_uuid.uuid);
380 CDEBUG(D_CONFIG, "connect to %s(%s) - %s, %s FOR %s\n",
381 mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
382 tgt->ltd_uuid.uuid, obd->obd_uuid.uuid,
385 if (!mdc_obd->obd_set_up) {
386 CERROR("target %s is not set up\n", tgt->ltd_uuid.uuid);
390 rc = obd_connect(NULL, &conn, mdc_obd, &lmv_mdc_uuid,
393 CERROR("target %s connect error %d\n", tgt->ltd_uuid.uuid, rc);
397 mdc_exp = class_conn2export(&conn);
399 /* Init fid sequence client for this mdc. */
400 rc = obd_fid_init(mdc_exp);
404 /* Add new FLD target. */
405 target.ft_srv = NULL;
406 target.ft_exp = mdc_exp;
407 target.ft_idx = tgt->ltd_idx;
409 fld_client_add_target(&lmv->lmv_fld, &target);
411 mdc_data = &class_exp2cliimp(mdc_exp)->imp_connect_data;
413 rc = obd_register_observer(mdc_obd, obd);
415 obd_disconnect(mdc_exp);
416 CERROR("target %s register_observer error %d\n",
417 tgt->ltd_uuid.uuid, rc);
421 if (obd->obd_observer) {
422 /* tell the mds_lmv about the new target */
423 rc = obd_notify(obd->obd_observer, mdc_exp->exp_obd,
424 OBD_NOTIFY_ACTIVE, (void *)(tgt - lmv->tgts));
426 obd_disconnect(mdc_exp);
432 tgt->ltd_exp = mdc_exp;
433 lmv->desc.ld_active_tgt_count++;
435 /* copy connect data, it may be used later */
436 lmv->datas[tgt->ltd_idx] = *mdc_data;
438 md_init_ea_size(tgt->ltd_exp, lmv->max_easize,
439 lmv->max_def_easize, lmv->max_cookiesize);
441 CDEBUG(D_CONFIG, "connected to %s(%s) successfully (%d)\n",
442 mdc_obd->obd_name, mdc_obd->obd_uuid.uuid,
443 atomic_read(&obd->obd_refcount));
446 lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
448 struct proc_dir_entry *mdc_symlink;
449 char name[MAX_STRING_SIZE + 1];
451 LASSERT(mdc_obd->obd_type != NULL);
452 LASSERT(mdc_obd->obd_type->typ_name != NULL);
453 name[MAX_STRING_SIZE] = '\0';
454 snprintf(name, MAX_STRING_SIZE, "../../../%s/%s",
455 mdc_obd->obd_type->typ_name,
457 mdc_symlink = proc_symlink(mdc_obd->obd_name,
459 if (mdc_symlink == NULL) {
460 CERROR("could not register LMV target "
461 "/proc/fs/lustre/%s/%s/target_obds/%s.",
462 obd->obd_type->typ_name, obd->obd_name,
464 lprocfs_remove(&lmv_proc_dir);
472 int lmv_add_target(struct obd_device *obd, struct obd_uuid *tgt_uuid)
474 struct lmv_obd *lmv = &obd->u.lmv;
475 struct lmv_tgt_desc *tgt;
479 CDEBUG(D_CONFIG, "tgt_uuid: %s.\n", tgt_uuid->uuid);
483 if (lmv->desc.ld_active_tgt_count >= LMV_MAX_TGT_COUNT) {
484 lmv_init_unlock(lmv);
485 CERROR("can't add %s, LMV module compiled for %d MDCs. "
486 "That many MDCs already configured.\n",
487 tgt_uuid->uuid, LMV_MAX_TGT_COUNT);
490 if (lmv->desc.ld_tgt_count == 0) {
491 struct obd_device *mdc_obd;
493 mdc_obd = class_find_client_obd(tgt_uuid, LUSTRE_MDC_NAME,
496 lmv_init_unlock(lmv);
497 CERROR("Target %s not attached\n", tgt_uuid->uuid);
501 rc = obd_llog_init(obd, NULL, mdc_obd, 0, NULL, tgt_uuid);
503 lmv_init_unlock(lmv);
504 CERROR("lmv failed to setup llogging subsystems\n");
507 spin_lock(&lmv->lmv_lock);
508 tgt = lmv->tgts + lmv->desc.ld_tgt_count++;
509 tgt->ltd_uuid = *tgt_uuid;
510 spin_unlock(&lmv->lmv_lock);
512 if (lmv->connected) {
513 rc = lmv_connect_mdc(obd, tgt);
515 spin_lock(&lmv->lmv_lock);
516 lmv->desc.ld_tgt_count--;
517 memset(tgt, 0, sizeof(*tgt));
518 spin_unlock(&lmv->lmv_lock);
520 int easize = sizeof(struct lmv_stripe_md) +
521 lmv->desc.ld_tgt_count *
522 sizeof(struct lu_fid);
523 lmv_init_ea_size(obd->obd_self_export, easize, 0, 0);
527 lmv_init_unlock(lmv);
531 /* performs a check if passed obd is connected. If no - connect it. */
532 int lmv_check_connect(struct obd_device *obd)
534 struct lmv_obd *lmv = &obd->u.lmv;
535 struct lmv_tgt_desc *tgt;
543 if (lmv->connected) {
544 lmv_init_unlock(lmv);
548 if (lmv->desc.ld_tgt_count == 0) {
549 CERROR("%s: no targets configured.\n", obd->obd_name);
553 CDEBUG(D_CONFIG, "time to connect %s to %s\n",
554 lmv->cluuid.uuid, obd->obd_name);
556 LASSERT(lmv->tgts != NULL);
558 for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgt++) {
559 rc = lmv_connect_mdc(obd, tgt);
564 lmv_set_timeouts(obd);
565 class_export_put(lmv->exp);
567 easize = lmv_get_easize(lmv);
568 lmv_init_ea_size(obd->obd_self_export, easize, 0, 0);
569 lmv_init_unlock(lmv);
578 --lmv->desc.ld_active_tgt_count;
579 rc2 = obd_disconnect(tgt->ltd_exp);
581 CERROR("error: LMV target %s disconnect on "
582 "MDC idx %d: error %d\n",
583 tgt->ltd_uuid.uuid, i, rc2);
587 class_disconnect(lmv->exp);
588 lmv_init_unlock(lmv);
592 static int lmv_disconnect_mdc(struct obd_device *obd, struct lmv_tgt_desc *tgt)
595 struct proc_dir_entry *lmv_proc_dir;
597 struct lmv_obd *lmv = &obd->u.lmv;
598 struct obd_device *mdc_obd;
602 LASSERT(tgt != NULL);
603 LASSERT(obd != NULL);
605 mdc_obd = class_exp2obd(tgt->ltd_exp);
608 mdc_obd->obd_no_recov = obd->obd_no_recov;
611 lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
613 struct proc_dir_entry *mdc_symlink;
615 mdc_symlink = lprocfs_srch(lmv_proc_dir, mdc_obd->obd_name);
617 lprocfs_remove(&mdc_symlink);
619 CERROR("/proc/fs/lustre/%s/%s/target_obds/%s missing\n",
620 obd->obd_type->typ_name, obd->obd_name,
625 rc = obd_fid_fini(tgt->ltd_exp);
627 CERROR("Can't finanize fids factory\n");
629 CDEBUG(D_OTHER, "Disconnected from %s(%s) successfully\n",
630 tgt->ltd_exp->exp_obd->obd_name,
631 tgt->ltd_exp->exp_obd->obd_uuid.uuid);
633 obd_register_observer(tgt->ltd_exp->exp_obd, NULL);
634 rc = obd_disconnect(tgt->ltd_exp);
636 if (tgt->ltd_active) {
637 CERROR("Target %s disconnect error %d\n",
638 tgt->ltd_uuid.uuid, rc);
642 lmv_activate_target(lmv, tgt, 0);
647 static int lmv_disconnect(struct obd_export *exp)
649 struct obd_device *obd = class_exp2obd(exp);
651 struct proc_dir_entry *lmv_proc_dir;
653 struct lmv_obd *lmv = &obd->u.lmv;
660 /* Only disconnect the underlying layers on the final disconnect. */
662 if (lmv->refcount != 0)
665 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
666 if (lmv->tgts[i].ltd_exp == NULL)
668 lmv_disconnect_mdc(obd, &lmv->tgts[i]);
672 lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
674 lprocfs_remove(&lmv_proc_dir);
676 CERROR("/proc/fs/lustre/%s/%s/target_obds missing\n",
677 obd->obd_type->typ_name, obd->obd_name);
683 * This is the case when no real connection is established by
684 * lmv_check_connect().
687 class_export_put(exp);
688 rc = class_disconnect(exp);
689 if (lmv->refcount == 0)
694 static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp,
695 int len, void *karg, void *uarg)
697 struct obd_device *obddev = class_exp2obd(exp);
698 struct lmv_obd *lmv = &obddev->u.lmv;
699 int i, rc = 0, set = 0;
702 if (lmv->desc.ld_tgt_count == 0)
705 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
708 if (lmv->tgts[i].ltd_exp == NULL)
711 err = obd_iocontrol(cmd, lmv->tgts[i].ltd_exp, len, karg, uarg);
713 if (lmv->tgts[i].ltd_active) {
714 CERROR("error: iocontrol MDC %s on MDT"
715 "idx %d: err = %d\n",
716 lmv->tgts[i].ltd_uuid.uuid, i, err);
734 static int lmv_all_chars_policy(int count, const char *name,
745 static int lmv_nid_policy(struct lmv_obd *lmv)
747 struct obd_import *imp = class_exp2cliimp(lmv->tgts[0].ltd_exp);
750 * XXX Hack: to get nid we assume that underlying obd device is mdc.
752 id = imp->imp_connection->c_self ^ (imp->imp_connection->c_self >> 32);
753 return id % lmv->desc.ld_tgt_count;
756 static int lmv_choose_mds(struct lmv_obd *lmv, struct md_op_data *op_data,
761 return lmv_all_chars_policy(lmv->desc.ld_tgt_count,
763 op_data->op_namelen);
765 return lmv_nid_policy(lmv);
771 CERROR("unsupport type %d \n", type);
775 /* This is _inode_ placement policy function (not name). */
776 static int lmv_placement_policy(struct obd_device *obd,
777 struct md_op_data *op_data,
780 struct lmv_obd *lmv = &obd->u.lmv;
785 LASSERT(mds != NULL);
788 * Allocate new fid on target according to operation type and parent
791 obj = lmv_obj_grab(obd, &op_data->op_fid1);
792 if (obj != NULL || op_data->op_name == NULL ||
793 op_data->op_opc != LUSTRE_OPC_MKDIR) {
795 * Allocate fid for non-dir or for null name or for case parent
802 * If we have this flag turned on, and we see that
803 * parent dir is split, this means, that caller did not
804 * notice split yet. This is race and we would like to
805 * let caller know that.
807 if (op_data->op_bias & MDS_CHECK_SPLIT)
812 * Allocate new fid on same mds where parent fid is located and
813 * where operation will be sent. In case of split dir, ->op_fid1
814 * and ->op_mds here will contain fid and mds of slave directory
815 * object (assigned by caller).
817 *mds = op_data->op_mds;
821 /* XXX: This should be removed later wehn we sure it is not
823 rc = lmv_fld_lookup(lmv, &op_data->op_fid1, mds);
829 * Parent directory is not split and we want to create a
830 * directory in it. Let's calculate where to place it according
833 *mds = lmv_choose_mds(lmv, op_data, NID_TYPE);
841 CERROR("Can't choose MDS, err = %d\n", rc);
843 LASSERT(*mds < lmv->desc.ld_tgt_count);
849 int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid,
852 struct lmv_tgt_desc *tgt = &lmv->tgts[mds];
856 /* New seq alloc and FLD setup should be atomic. */
857 down(&tgt->ltd_fid_sem);
859 /* Asking underlaying tgt layer to allocate new fid. */
860 rc = obd_fid_alloc(tgt->ltd_exp, fid, NULL);
862 LASSERT(fid_is_sane(fid));
864 /* Client switches to new sequence, setup FLD. */
865 rc = fld_client_create(&lmv->lmv_fld, fid_seq(fid),
868 CERROR("Can't create fld entry, rc %d\n", rc);
869 /* Delete just allocated fid sequence */
870 obd_fid_delete(tgt->ltd_exp, NULL);
873 up(&tgt->ltd_fid_sem);
877 int lmv_fid_alloc(struct obd_export *exp, struct lu_fid *fid,
878 struct md_op_data *op_data)
880 struct obd_device *obd = class_exp2obd(exp);
881 struct lmv_obd *lmv = &obd->u.lmv;
886 LASSERT(op_data != NULL);
887 LASSERT(fid != NULL);
889 rc = lmv_placement_policy(obd, op_data, &mds);
891 CERROR("Can't get target for allocating fid, "
896 rc = __lmv_fid_alloc(lmv, fid, mds);
898 CERROR("Can't alloc new fid, rc %d\n", rc);
905 static int lmv_fid_delete(struct obd_export *exp, const struct lu_fid *fid)
910 if (lmv_obj_delete(exp, fid)) {
911 CDEBUG(D_OTHER, "lmv object "DFID" is destroyed.\n",
917 static int lmv_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
919 struct lmv_obd *lmv = &obd->u.lmv;
920 struct lprocfs_static_vars lvars;
921 struct lmv_desc *desc;
925 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
926 CERROR("LMV setup requires a descriptor\n");
930 desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1);
931 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
932 CERROR("descriptor size wrong: %d > %d\n",
933 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
937 lmv->tgts_size = LMV_MAX_TGT_COUNT * sizeof(struct lmv_tgt_desc);
939 OBD_ALLOC(lmv->tgts, lmv->tgts_size);
940 if (lmv->tgts == NULL)
943 for (i = 0; i < LMV_MAX_TGT_COUNT; i++) {
944 sema_init(&lmv->tgts[i].ltd_fid_sem, 1);
945 lmv->tgts[i].ltd_idx = i;
948 lmv->datas_size = LMV_MAX_TGT_COUNT * sizeof(struct obd_connect_data);
950 OBD_ALLOC(lmv->datas, lmv->datas_size);
951 if (lmv->datas == NULL)
952 GOTO(out_free_tgts, rc = -ENOMEM);
954 obd_str2uuid(&lmv->desc.ld_uuid, desc->ld_uuid.uuid);
955 lmv->desc.ld_tgt_count = 0;
956 lmv->desc.ld_active_tgt_count = 0;
957 lmv->max_cookiesize = 0;
958 lmv->max_def_easize = 0;
961 spin_lock_init(&lmv->lmv_lock);
962 sema_init(&lmv->init_sem, 1);
964 rc = lmv_obj_setup(obd);
966 CERROR("Can't setup LMV object manager, "
968 GOTO(out_free_datas, rc);
971 lprocfs_lmv_init_vars(&lvars);
972 lprocfs_obd_setup(obd, lvars.obd_vars);
975 struct proc_dir_entry *entry;
977 entry = create_proc_entry("target_obd_status", 0444,
978 obd->obd_proc_entry);
980 entry->proc_fops = &lmv_proc_target_fops;
985 rc = fld_client_init(&lmv->lmv_fld, obd->obd_name,
986 LUSTRE_CLI_FLD_HASH_DHT);
988 CERROR("can't init FLD, err %d\n",
990 GOTO(out_free_datas, rc);
996 OBD_FREE(lmv->datas, lmv->datas_size);
999 OBD_FREE(lmv->tgts, lmv->tgts_size);
1004 static int lmv_cleanup(struct obd_device *obd)
1006 struct lmv_obd *lmv = &obd->u.lmv;
1009 fld_client_fini(&lmv->lmv_fld);
1010 lprocfs_obd_cleanup(obd);
1011 lmv_obj_cleanup(obd);
1012 OBD_FREE(lmv->datas, lmv->datas_size);
1013 OBD_FREE(lmv->tgts, lmv->tgts_size);
1018 static int lmv_process_config(struct obd_device *obd, obd_count len, void *buf)
1020 struct lustre_cfg *lcfg = buf;
1021 struct obd_uuid tgt_uuid;
1025 switch(lcfg->lcfg_command) {
1027 if (LUSTRE_CFG_BUFLEN(lcfg, 1) > sizeof(tgt_uuid.uuid))
1028 GOTO(out, rc = -EINVAL);
1030 obd_str2uuid(&tgt_uuid, lustre_cfg_string(lcfg, 1));
1031 rc = lmv_add_target(obd, &tgt_uuid);
1034 CERROR("Unknown command: %d\n", lcfg->lcfg_command);
1035 GOTO(out, rc = -EINVAL);
1042 static int lmv_statfs(struct obd_device *obd, struct obd_statfs *osfs,
1045 struct lmv_obd *lmv = &obd->u.lmv;
1046 struct obd_statfs *temp;
1050 rc = lmv_check_connect(obd);
1054 OBD_ALLOC(temp, sizeof(*temp));
1058 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1059 if (lmv->tgts[i].ltd_exp == NULL)
1062 rc = obd_statfs(lmv->tgts[i].ltd_exp->exp_obd, temp, max_age);
1064 CERROR("can't stat MDS #%d (%s), error %d\n", i,
1065 lmv->tgts[i].ltd_exp->exp_obd->obd_name,
1067 GOTO(out_free_temp, rc);
1072 osfs->os_bavail += temp->os_bavail;
1073 osfs->os_blocks += temp->os_blocks;
1074 osfs->os_ffree += temp->os_ffree;
1075 osfs->os_files += temp->os_files;
1081 OBD_FREE(temp, sizeof(*temp));
1085 static int lmv_getstatus(struct obd_export *exp,
1087 struct obd_capa **pc)
1089 struct obd_device *obd = exp->exp_obd;
1090 struct lmv_obd *lmv = &obd->u.lmv;
1094 rc = lmv_check_connect(obd);
1098 rc = md_getstatus(lmv->tgts[0].ltd_exp, fid, pc);
1103 static int lmv_getxattr(struct obd_export *exp, const struct lu_fid *fid,
1104 struct obd_capa *oc, obd_valid valid, const char *name,
1105 const char *input, int input_size, int output_size,
1106 int flags, struct ptlrpc_request **request)
1108 struct obd_device *obd = exp->exp_obd;
1109 struct lmv_obd *lmv = &obd->u.lmv;
1110 struct obd_export *tgt_exp;
1114 rc = lmv_check_connect(obd);
1118 tgt_exp = lmv_find_export(lmv, fid);
1119 if (IS_ERR(tgt_exp))
1120 RETURN(PTR_ERR(tgt_exp));
1122 rc = md_getxattr(tgt_exp, fid, oc, valid, name, input, input_size,
1123 output_size, flags, request);
1128 static int lmv_setxattr(struct obd_export *exp, const struct lu_fid *fid,
1129 struct obd_capa *oc, obd_valid valid, const char *name,
1130 const char *input, int input_size, int output_size,
1131 int flags, __u32 suppgid,
1132 struct ptlrpc_request **request)
1134 struct obd_device *obd = exp->exp_obd;
1135 struct lmv_obd *lmv = &obd->u.lmv;
1136 struct obd_export *tgt_exp;
1140 rc = lmv_check_connect(obd);
1144 tgt_exp = lmv_find_export(lmv, fid);
1145 if (IS_ERR(tgt_exp))
1146 RETURN(PTR_ERR(tgt_exp));
1148 rc = md_setxattr(tgt_exp, fid, oc, valid, name,
1149 input, input_size, output_size, flags, suppgid,
1155 static int lmv_getattr(struct obd_export *exp, const struct lu_fid *fid,
1156 struct obd_capa *oc, obd_valid valid, int ea_size,
1157 struct ptlrpc_request **request)
1159 struct obd_device *obd = exp->exp_obd;
1160 struct lmv_obd *lmv = &obd->u.lmv;
1161 struct obd_export *tgt_exp;
1162 struct lmv_obj *obj;
1166 rc = lmv_check_connect(obd);
1170 tgt_exp = lmv_find_export(lmv, fid);
1171 if (IS_ERR(tgt_exp))
1172 RETURN(PTR_ERR(tgt_exp));
1174 rc = md_getattr(tgt_exp, fid, oc, valid, ea_size, request);
1178 obj = lmv_obj_grab(obd, fid);
1180 CDEBUG(D_OTHER, "GETATTR for "DFID" %s\n", PFID(fid),
1181 obj ? "(split)" : "");
1184 * If object is split, then we loop over all the slaves and gather size
1185 * attribute. In ideal world we would have to gather also mds field from
1186 * all slaves, as object is spread over the cluster and this is
1187 * definitely interesting information and it is not good to loss it,
1191 struct mdt_body *body;
1193 if (*request == NULL) {
1198 body = lustre_msg_buf((*request)->rq_repmsg, REPLY_REC_OFF,
1200 LASSERT(body != NULL);
1201 LASSERT(lustre_rep_swabbed(*request, REPLY_REC_OFF));
1205 for (i = 0; i < obj->lo_objcount; i++) {
1206 if (lmv->tgts[i].ltd_exp == NULL) {
1207 CWARN("%s: NULL export for %d\n",
1212 /* skip master obj. */
1213 if (lu_fid_eq(&obj->lo_fid, &obj->lo_inodes[i].li_fid))
1216 lmv_update_body(body, &obj->lo_inodes[i]);
1219 lmv_obj_unlock(obj);
1226 static int lmv_change_cbdata(struct obd_export *exp, const struct lu_fid *fid,
1227 ldlm_iterator_t it, void *data)
1229 struct obd_device *obd = exp->exp_obd;
1230 struct lmv_obd *lmv = &obd->u.lmv;
1234 rc = lmv_check_connect(obd);
1238 CDEBUG(D_OTHER, "CBDATA for "DFID"\n", PFID(fid));
1241 * With CMD every object can have two locks in different namespaces:
1242 * lookup lock in space of mds storing direntry and update/open lock in
1243 * space of mds storing inode.
1245 for (i = 0; i < lmv->desc.ld_tgt_count; i++)
1246 md_change_cbdata(lmv->tgts[i].ltd_exp, fid, it, data);
1251 static int lmv_close(struct obd_export *exp,
1252 struct md_op_data *op_data,
1253 struct md_open_data *mod,
1254 struct ptlrpc_request **request)
1256 struct obd_device *obd = exp->exp_obd;
1257 struct lmv_obd *lmv = &obd->u.lmv;
1258 struct obd_export *tgt_exp;
1262 rc = lmv_check_connect(obd);
1266 tgt_exp = lmv_find_export(lmv, &op_data->op_fid1);
1267 if (IS_ERR(tgt_exp))
1268 RETURN(PTR_ERR(tgt_exp));
1270 CDEBUG(D_OTHER, "CLOSE "DFID"\n", PFID(&op_data->op_fid1));
1271 rc = md_close(tgt_exp, op_data, mod, request);
1276 * Called in the case MDS returns -ERESTART on create on open, what means that
1277 * directory is split and its LMV presentation object has to be updated.
1279 int lmv_handle_split(struct obd_export *exp, const struct lu_fid *fid)
1281 struct obd_device *obd = exp->exp_obd;
1282 struct lmv_obd *lmv = &obd->u.lmv;
1283 struct ptlrpc_request *req = NULL;
1284 struct obd_export *tgt_exp;
1285 struct lmv_obj *obj;
1286 struct lustre_md md;
1292 mealen = lmv_get_easize(lmv);
1294 valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA | OBD_MD_MEA;
1296 tgt_exp = lmv_find_export(lmv, fid);
1297 if (IS_ERR(tgt_exp))
1298 RETURN(PTR_ERR(tgt_exp));
1300 /* time to update mea of parent fid */
1301 rc = md_getattr(tgt_exp, fid, NULL, valid, mealen, &req);
1303 CERROR("md_getattr() failed, error %d\n", rc);
1307 rc = md_get_lustre_md(tgt_exp, req, 1, NULL, exp, &md);
1309 CERROR("mdc_get_lustre_md() failed, error %d\n", rc);
1314 GOTO(cleanup, rc = -ENODATA);
1316 obj = lmv_obj_create(exp, fid, md.mea);
1322 obd_free_memmd(exp, (struct lov_stripe_md **)&md.mea);
1327 ptlrpc_req_finished(req);
1331 int lmv_create(struct obd_export *exp, struct md_op_data *op_data,
1332 const void *data, int datalen, int mode, __u32 uid,
1333 __u32 gid, __u32 cap_effective, __u64 rdev,
1334 struct ptlrpc_request **request)
1336 struct obd_device *obd = exp->exp_obd;
1337 struct lmv_obd *lmv = &obd->u.lmv;
1338 struct obd_export *tgt_exp;
1339 struct lmv_obj *obj;
1343 rc = lmv_check_connect(obd);
1347 if (!lmv->desc.ld_active_tgt_count)
1352 obj = lmv_obj_grab(obd, &op_data->op_fid1);
1356 mea_idx = raw_name2idx(obj->lo_hashtype, obj->lo_objcount,
1357 op_data->op_name, op_data->op_namelen);
1358 op_data->op_fid1 = obj->lo_inodes[mea_idx].li_fid;
1359 op_data->op_bias &= ~MDS_CHECK_SPLIT;
1360 op_data->op_mds = obj->lo_inodes[mea_idx].li_mds;
1361 tgt_exp = lmv_get_export(lmv, op_data->op_mds);
1364 struct lmv_tgt_desc *tgt;
1366 tgt = lmv_find_target(lmv, &op_data->op_fid1);
1367 op_data->op_bias |= MDS_CHECK_SPLIT;
1368 op_data->op_mds = tgt->ltd_idx;
1369 tgt_exp = tgt->ltd_exp;
1372 if (IS_ERR(tgt_exp))
1373 RETURN(PTR_ERR(tgt_exp));
1375 rc = lmv_fid_alloc(exp, &op_data->op_fid2, op_data);
1376 if (rc == -ERESTART)
1381 CDEBUG(D_OTHER, "CREATE '%*s' on "DFID"\n", op_data->op_namelen,
1382 op_data->op_name, PFID(&op_data->op_fid1));
1384 op_data->op_flags |= MF_MDC_CANCEL_FID1;
1385 rc = md_create(tgt_exp, op_data, data, datalen, mode, uid, gid,
1386 cap_effective, rdev, request);
1388 if (*request == NULL)
1390 CDEBUG(D_OTHER, "created - "DFID"\n", PFID(&op_data->op_fid1));
1391 } else if (rc == -ERESTART) {
1392 LASSERT(*request != NULL);
1393 DEBUG_REQ(D_WARNING|D_RPCTRACE, *request,
1394 "Got -ERESTART during create!\n");
1395 ptlrpc_req_finished(*request);
1399 * Directory got split. Time to update local object and repeat
1400 * the request with proper MDS.
1402 rc = lmv_handle_split(exp, &op_data->op_fid1);
1404 rc = lmv_alloc_slave_fids(obd, &op_data->op_fid1,
1405 op_data, &op_data->op_fid2);
1414 static int lmv_done_writing(struct obd_export *exp,
1415 struct md_op_data *op_data,
1416 struct md_open_data *mod)
1418 struct obd_device *obd = exp->exp_obd;
1419 struct lmv_obd *lmv = &obd->u.lmv;
1420 struct obd_export *tgt_exp;
1424 rc = lmv_check_connect(obd);
1428 tgt_exp = lmv_find_export(lmv, &op_data->op_fid1);
1429 if (IS_ERR(tgt_exp))
1430 RETURN(PTR_ERR(tgt_exp));
1432 rc = md_done_writing(tgt_exp, op_data, mod);
1437 lmv_enqueue_slaves(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
1438 struct lookup_intent *it, struct md_op_data *op_data,
1439 struct lustre_handle *lockh, void *lmm, int lmmsize)
1441 struct obd_device *obd = exp->exp_obd;
1442 struct lmv_obd *lmv = &obd->u.lmv;
1443 struct lmv_stripe_md *mea = op_data->op_mea1;
1444 struct md_op_data *op_data2;
1445 struct obd_export *tgt_exp;
1449 OBD_ALLOC_PTR(op_data2);
1450 if (op_data2 == NULL)
1453 LASSERT(mea != NULL);
1454 for (i = 0; i < mea->mea_count; i++) {
1455 memset(op_data2, 0, sizeof(*op_data2));
1456 op_data2->op_fid1 = mea->mea_ids[i];
1457 op_data2->op_bias = 0;
1459 tgt_exp = lmv_find_export(lmv, &op_data2->op_fid1);
1460 if (IS_ERR(tgt_exp))
1461 GOTO(cleanup, rc = PTR_ERR(tgt_exp));
1463 if (tgt_exp == NULL)
1466 rc = md_enqueue(tgt_exp, einfo, it, op_data2,
1467 lockh + i, lmm, lmmsize, 0);
1469 CDEBUG(D_OTHER, "take lock on slave "DFID" -> %d/%d\n",
1470 PFID(&mea->mea_ids[i]), rc, it->d.lustre.it_status);
1475 if (it->d.lustre.it_data) {
1476 struct ptlrpc_request *req;
1477 req = (struct ptlrpc_request *)it->d.lustre.it_data;
1478 ptlrpc_req_finished(req);
1481 if (it->d.lustre.it_status)
1482 GOTO(cleanup, rc = it->d.lustre.it_status);
1487 OBD_FREE_PTR(op_data2);
1490 /* drop all taken locks */
1492 if (lockh[i].cookie)
1493 ldlm_lock_decref(lockh + i, einfo->ei_mode);
1494 lockh[i].cookie = 0;
1501 lmv_enqueue_remote(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
1502 struct lookup_intent *it, struct md_op_data *op_data,
1503 struct lustre_handle *lockh, void *lmm, int lmmsize,
1504 int extra_lock_flags)
1506 struct ptlrpc_request *req = it->d.lustre.it_data;
1507 struct obd_device *obd = exp->exp_obd;
1508 struct lmv_obd *lmv = &obd->u.lmv;
1509 struct lustre_handle plock;
1510 struct obd_export *tgt_exp;
1511 struct md_op_data *rdata;
1512 struct lu_fid fid_copy;
1513 struct mdt_body *body;
1517 body = lustre_msg_buf(req->rq_repmsg,
1518 DLM_REPLY_REC_OFF, sizeof(*body));
1519 LASSERT(body != NULL);
1520 LASSERT(lustre_rep_swabbed(req, DLM_REPLY_REC_OFF));
1522 if (!(body->valid & OBD_MD_MDS))
1525 CDEBUG(D_OTHER, "ENQUEUE '%s' on "DFID" -> "DFID"\n",
1526 LL_IT2STR(it), PFID(&op_data->op_fid1), PFID(&body->fid1));
1528 /* We got LOOKUP lock, but we really need attrs */
1529 pmode = it->d.lustre.it_lock_mode;
1530 LASSERT(pmode != 0);
1531 memcpy(&plock, lockh, sizeof(plock));
1532 it->d.lustre.it_lock_mode = 0;
1533 it->d.lustre.it_data = NULL;
1534 fid_copy = body->fid1;
1536 it->d.lustre.it_disposition &= ~DISP_ENQ_COMPLETE;
1537 ptlrpc_req_finished(req);
1539 tgt_exp = lmv_find_export(lmv, &fid_copy);
1540 if (IS_ERR(tgt_exp))
1541 GOTO(out, rc = PTR_ERR(tgt_exp));
1543 OBD_ALLOC_PTR(rdata);
1545 GOTO(out, rc = -ENOMEM);
1547 rdata->op_fid1 = fid_copy;
1548 rdata->op_bias = MDS_CROSS_REF;
1550 rc = md_enqueue(tgt_exp, einfo, it, rdata, lockh,
1551 lmm, lmmsize, extra_lock_flags);
1552 OBD_FREE_PTR(rdata);
1555 ldlm_lock_decref(&plock, pmode);
1560 lmv_enqueue(struct obd_export *exp, struct ldlm_enqueue_info *einfo,
1561 struct lookup_intent *it, struct md_op_data *op_data,
1562 struct lustre_handle *lockh, void *lmm, int lmmsize,
1563 int extra_lock_flags)
1565 struct obd_device *obd = exp->exp_obd;
1566 struct lmv_obd *lmv = &obd->u.lmv;
1567 struct obd_export *tgt_exp = NULL;
1568 struct lmv_obj *obj;
1572 rc = lmv_check_connect(obd);
1576 if (op_data->op_mea1 && it->it_op == IT_UNLINK) {
1577 rc = lmv_enqueue_slaves(exp, einfo, it, op_data,
1578 lockh, lmm, lmmsize);
1582 if (op_data->op_namelen) {
1583 obj = lmv_obj_grab(obd, &op_data->op_fid1);
1587 /* directory is split. look for right mds for this
1589 mea_idx = raw_name2idx(obj->lo_hashtype,
1591 (char *)op_data->op_name,
1592 op_data->op_namelen);
1593 op_data->op_fid1 = obj->lo_inodes[mea_idx].li_fid;
1594 tgt_exp = lmv_get_export(lmv, obj->lo_inodes[mea_idx].li_mds);
1599 if (tgt_exp == NULL)
1600 tgt_exp = lmv_find_export(lmv, &op_data->op_fid1);
1601 if (IS_ERR(tgt_exp))
1602 RETURN(PTR_ERR(tgt_exp));
1604 CDEBUG(D_OTHER, "ENQUEUE '%s' on "DFID"\n", LL_IT2STR(it),
1605 PFID(&op_data->op_fid1));
1607 rc = md_enqueue(tgt_exp, einfo, it, op_data, lockh,
1608 lmm, lmmsize, extra_lock_flags);
1610 if (rc == 0 && it->it_op == IT_OPEN)
1611 rc = lmv_enqueue_remote(exp, einfo, it, op_data, lockh,
1612 lmm, lmmsize, extra_lock_flags);
1617 lmv_getattr_name(struct obd_export *exp, const struct lu_fid *fid,
1618 struct obd_capa *oc, const char *filename, int namelen,
1619 obd_valid valid, int ea_size, __u32 suppgid,
1620 struct ptlrpc_request **request)
1622 struct obd_device *obd = exp->exp_obd;
1623 struct lmv_obd *lmv = &obd->u.lmv;
1624 struct lu_fid rid = *fid;
1625 struct obd_export *tgt_exp;
1626 struct mdt_body *body;
1627 struct lmv_obj *obj;
1631 rc = lmv_check_connect(obd);
1638 obj = lmv_obj_grab(obd, &rid);
1642 /* Directory is split. Look for right mds for this name */
1643 mea_idx = raw_name2idx(obj->lo_hashtype, obj->lo_objcount,
1644 filename, namelen - 1);
1645 rid = obj->lo_inodes[mea_idx].li_fid;
1646 tgt_exp = lmv_get_export(lmv, obj->lo_inodes[mea_idx].li_mds);
1648 valid &= ~OBD_MD_FLCKSPLIT;
1650 tgt_exp = lmv_find_export(lmv, &rid);
1651 valid |= OBD_MD_FLCKSPLIT;
1653 if (IS_ERR(tgt_exp))
1654 RETURN(PTR_ERR(tgt_exp));
1656 CDEBUG(D_OTHER, "getattr_name for %*s on "DFID" -> "DFID"\n",
1657 namelen, filename, PFID(fid), PFID(&rid));
1659 rc = md_getattr_name(tgt_exp, &rid, oc, filename, namelen, valid,
1660 ea_size, suppgid, request);
1662 body = lustre_msg_buf((*request)->rq_repmsg,
1663 REQ_REC_OFF, sizeof(*body));
1664 LASSERT(body != NULL);
1665 LASSERT(lustre_rep_swabbed(*request, REQ_REC_OFF));
1667 if (body->valid & OBD_MD_MDS) {
1668 struct ptlrpc_request *req = NULL;
1671 CDEBUG(D_OTHER, "request attrs for "DFID"\n",
1674 tgt_exp = lmv_find_export(lmv, &rid);
1675 if (IS_ERR(tgt_exp)) {
1676 ptlrpc_req_finished(*request);
1677 RETURN(PTR_ERR(tgt_exp));
1680 rc = md_getattr_name(tgt_exp, &rid, NULL, NULL, 1,
1681 valid | OBD_MD_FLCROSSREF,
1682 ea_size, suppgid, &req);
1683 ptlrpc_req_finished(*request);
1686 } else if (rc == -ERESTART) {
1687 LASSERT(*request != NULL);
1688 DEBUG_REQ(D_WARNING|D_RPCTRACE, *request,
1689 "Got -ERESTART during getattr!\n");
1690 ptlrpc_req_finished(*request);
1694 * Directory got split. Time to update local object and repeat
1695 * the request with proper MDS.
1697 rc = lmv_handle_split(exp, &rid);
1704 #define md_op_data_fid(op_data, fl) \
1705 (fl == MF_MDC_CANCEL_FID1 ? &op_data->op_fid1 : \
1706 fl == MF_MDC_CANCEL_FID2 ? &op_data->op_fid2 : \
1707 fl == MF_MDC_CANCEL_FID3 ? &op_data->op_fid3 : \
1708 fl == MF_MDC_CANCEL_FID4 ? &op_data->op_fid4 : \
1711 /* @tgt_exp is the export the metadata request is sent.
1712 * @fid_exp is the export the cancel should be sent for the current fid.
1713 * if @fid_exp is NULL, the export is found for the current fid.
1714 * @op_data keeps the current fid, which is pointed through @flag.
1715 * @mode, @bits -- lock match parameters. */
1716 static int lmv_early_cancel(struct lmv_obd *lmv, struct obd_export *tgt_exp,
1717 struct obd_export *fid_exp,
1718 struct md_op_data *op_data,
1719 ldlm_mode_t mode, int bits, int flag)
1721 struct lu_fid *fid = md_op_data_fid(op_data, flag);
1722 ldlm_policy_data_t policy = {{0}};
1726 if (!fid_is_sane(fid))
1729 if (fid_exp == NULL)
1730 fid_exp = lmv_find_export(lmv, fid);
1732 if (tgt_exp == fid_exp) {
1733 /* The export is the same as on the target server, cancel
1734 * will be sent along with the main metadata operation. */
1735 op_data->op_flags |= flag;
1739 policy.l_inodebits.bits = bits;
1740 rc = md_cancel_unused(fid_exp, fid, &policy, mode, LDLM_FL_ASYNC, NULL);
1744 #ifdef EARLY_CANCEL_FOR_STRIPED_DIR_IS_READY
1745 /* Check if the fid in @op_data pointed to by flag is of the same export(s)
1746 * as @tgt_exp. Early cancels will be sent later by mdc code, otherwise, call
1747 * md_cancel_unused for child export(s). */
1748 static int lmv_early_cancel_stripes(struct obd_export *exp,
1749 struct obd_export *tgt_exp,
1750 struct md_op_data *op_data,
1751 ldlm_mode_t mode, int bits, int flag)
1753 struct lu_fid *fid = md_op_data_fid(op_data, flag);
1754 struct obd_device *obd = exp->exp_obd;
1755 struct lmv_obd *lmv = &obd->u.lmv;
1756 struct obd_export *st_exp;
1757 struct lmv_obj *obj;
1761 if (!fid_is_sane(fid))
1764 obj = lmv_obj_grab(obd, fid);
1766 ldlm_policy_data_t policy = {{0}};
1767 struct lu_fid *st_fid;
1770 policy.l_inodebits.bits = bits;
1771 for (i = 0; i < obj->lo_objcount; i++) {
1772 st_exp = lmv_get_export(lmv, obj->lo_inodes[i].li_mds);
1773 st_fid = &obj->lo_inodes[i].li_fid;
1774 if (tgt_exp != st_exp) {
1775 rc = md_cancel_unused(st_exp, st_fid, &policy,
1776 mode, LDLM_FL_ASYNC,
1781 /* Some export matches to @tgt_exp, do cancel
1782 * for its fid in mdc */
1784 op_data->op_flags |= flag;
1789 rc = lmv_early_cancel(lmv, tgt_exp, NULL, op_data,
1797 * llite passes fid of an target inode in op_data->op_fid1 and id of directory in
1800 static int lmv_link(struct obd_export *exp, struct md_op_data *op_data,
1801 struct ptlrpc_request **request)
1803 struct obd_device *obd = exp->exp_obd;
1804 struct lmv_obd *lmv = &obd->u.lmv;
1805 struct obd_export *tgt_exp;
1806 struct lmv_obj *obj;
1811 rc = lmv_check_connect(obd);
1818 if (op_data->op_namelen != 0) {
1821 /* Usual link request */
1822 obj = lmv_obj_grab(obd, &op_data->op_fid2);
1824 mea_idx = raw_name2idx(obj->lo_hashtype,
1827 op_data->op_namelen);
1828 op_data->op_fid2 = obj->lo_inodes[mea_idx].li_fid;
1829 mds = obj->lo_inodes[mea_idx].li_mds;
1832 rc = lmv_fld_lookup(lmv, &op_data->op_fid2, &mds);
1837 CDEBUG(D_OTHER,"link "DFID":%*s to "DFID"\n",
1838 PFID(&op_data->op_fid2), op_data->op_namelen,
1839 op_data->op_name, PFID(&op_data->op_fid1));
1841 rc = lmv_fld_lookup(lmv, &op_data->op_fid1, &mds);
1845 /* request from MDS to acquire i_links for inode by fid1 */
1846 CDEBUG(D_OTHER, "inc i_nlinks for "DFID"\n",
1847 PFID(&op_data->op_fid1));
1850 CDEBUG(D_OTHER, "forward to MDS #"LPU64" ("DFID")\n",
1851 mds, PFID(&op_data->op_fid1));
1853 op_data->op_fsuid = current->fsuid;
1854 op_data->op_fsgid = current->fsgid;
1855 op_data->op_cap = current->cap_effective;
1857 tgt_exp = lmv->tgts[mds].ltd_exp;
1858 if (op_data->op_namelen) {
1859 op_data->op_flags |= MF_MDC_CANCEL_FID2;
1860 /* Cancel UPDATE lock on child (fid1). */
1861 rc = lmv_early_cancel(lmv, tgt_exp, NULL, op_data, LCK_EX,
1862 MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID1);
1865 rc = md_link(tgt_exp, op_data, request);
1866 if (rc == -ERESTART) {
1867 LASSERT(*request != NULL);
1868 DEBUG_REQ(D_WARNING|D_RPCTRACE, *request,
1869 "Got -ERESTART during link!\n");
1870 ptlrpc_req_finished(*request);
1874 * Directory got split. Time to update local object and repeat
1875 * the request with proper MDS.
1877 rc = lmv_handle_split(exp, &op_data->op_fid2);
1885 static int lmv_rename(struct obd_export *exp, struct md_op_data *op_data,
1886 const char *old, int oldlen, const char *new, int newlen,
1887 struct ptlrpc_request **request)
1889 struct obd_export *tgt_exp = NULL, *src_exp;
1890 struct obd_device *obd = exp->exp_obd;
1891 struct lmv_obd *lmv = &obd->u.lmv;
1892 int rc, mea_idx, loop = 0;
1893 struct lmv_obj *obj;
1897 CDEBUG(D_OTHER, "rename %*s in "DFID" to %*s in "DFID"\n",
1898 oldlen, old, PFID(&op_data->op_fid1),
1899 newlen, new, PFID(&op_data->op_fid2));
1901 rc = lmv_check_connect(obd);
1907 * MDS with old dir entry is asking another MDS to create name
1911 "create %*s(%d/%d) in "DFID" pointing "
1912 "to "DFID"\n", newlen, new, oldlen, newlen,
1913 PFID(&op_data->op_fid2), PFID(&op_data->op_fid1));
1915 rc = lmv_fld_lookup(lmv, &op_data->op_fid2, &mds1);
1920 * Target directory can be split, sowe should forward request to
1923 obj = lmv_obj_grab(obd, &op_data->op_fid2);
1925 mea_idx = raw_name2idx(obj->lo_hashtype,
1927 (char *)new, newlen);
1928 op_data->op_fid2 = obj->lo_inodes[mea_idx].li_fid;
1929 CDEBUG(D_OTHER, "Parent obj "DFID"\n",
1930 PFID(&op_data->op_fid2));
1939 obj = lmv_obj_grab(obd, &op_data->op_fid1);
1942 * directory is already split, so we have to forward request to
1945 mea_idx = raw_name2idx(obj->lo_hashtype, obj->lo_objcount,
1946 (char *)old, oldlen);
1947 op_data->op_fid1 = obj->lo_inodes[mea_idx].li_fid;
1948 mds1 = obj->lo_inodes[mea_idx].li_mds;
1949 CDEBUG(D_OTHER, "Parent obj "DFID"\n", PFID(&op_data->op_fid1));
1952 rc = lmv_fld_lookup(lmv, &op_data->op_fid1, &mds1);
1957 obj = lmv_obj_grab(obd, &op_data->op_fid2);
1960 * Directory is already split, so we have to forward request to
1963 mea_idx = raw_name2idx(obj->lo_hashtype, obj->lo_objcount,
1964 (char *)new, newlen);
1966 mds2 = obj->lo_inodes[mea_idx].li_mds;
1967 op_data->op_fid2 = obj->lo_inodes[mea_idx].li_fid;
1968 CDEBUG(D_OTHER, "Parent obj "DFID"\n", PFID(&op_data->op_fid2));
1971 rc = lmv_fld_lookup(lmv, &op_data->op_fid2, &mds2);
1977 op_data->op_fsuid = current->fsuid;
1978 op_data->op_fsgid = current->fsgid;
1979 op_data->op_cap = current->cap_effective;
1981 src_exp = lmv_get_export(lmv, mds1);
1982 tgt_exp = lmv_get_export(lmv, mds2);
1984 /* LOOKUP lock on src child (fid3) should also be cancelled for
1985 * src_exp in mdc_rename. */
1986 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
1988 /* Cancel UPDATE locks on tgt parent (fid2), tgt_exp is its
1990 rc = lmv_early_cancel(lmv, src_exp, tgt_exp, op_data, LCK_EX,
1991 MDS_INODELOCK_UPDATE, MF_MDC_CANCEL_FID2);
1993 /* Cancel LOOKUP locks on tgt child (fid4) for parent tgt_exp.*/
1995 rc = lmv_early_cancel(lmv, src_exp, tgt_exp, op_data,
1996 LCK_EX, MDS_INODELOCK_LOOKUP,
1997 MF_MDC_CANCEL_FID4);
1999 /* XXX: the case when child is a striped dir is not supported.
2000 * Only the master stripe has all locks cancelled early. */
2001 /* Cancel all the locks on tgt child (fid4). */
2003 rc = lmv_early_cancel(lmv, src_exp, NULL, op_data,
2004 LCK_EX, MDS_INODELOCK_FULL,
2005 MF_MDC_CANCEL_FID4);
2009 rc = md_rename(src_exp, op_data, old, oldlen,
2010 new, newlen, request);
2011 if (rc == -ERESTART) {
2012 LASSERT(*request != NULL);
2013 DEBUG_REQ(D_WARNING|D_RPCTRACE, *request,
2014 "Got -ERESTART during rename!\n");
2015 ptlrpc_req_finished(*request);
2019 * Directory got split. Time to update local object and repeat
2020 * the request with proper MDS.
2022 rc = lmv_handle_split(exp, &op_data->op_fid1);
2029 static int lmv_setattr(struct obd_export *exp, struct md_op_data *op_data,
2030 void *ea, int ealen, void *ea2, int ea2len,
2031 struct ptlrpc_request **request,
2032 struct md_open_data **mod)
2034 struct obd_device *obd = exp->exp_obd;
2035 struct lmv_obd *lmv = &obd->u.lmv;
2036 struct ptlrpc_request *req;
2037 struct obd_export *tgt_exp;
2038 struct lmv_obj *obj;
2042 rc = lmv_check_connect(obd);
2046 obj = lmv_obj_grab(obd, &op_data->op_fid1);
2048 CDEBUG(D_OTHER, "SETATTR for "DFID", valid 0x%x%s\n",
2049 PFID(&op_data->op_fid1), op_data->op_attr.ia_valid,
2050 obj ? ", split" : "");
2052 op_data->op_flags |= MF_MDC_CANCEL_FID1;
2054 for (i = 0; i < obj->lo_objcount; i++) {
2055 op_data->op_fid1 = obj->lo_inodes[i].li_fid;
2057 tgt_exp = lmv_get_export(lmv, obj->lo_inodes[i].li_mds);
2058 if (IS_ERR(tgt_exp)) {
2059 rc = PTR_ERR(tgt_exp);
2063 rc = md_setattr(tgt_exp, op_data, ea, ealen,
2064 ea2, ea2len, &req, mod);
2066 if (lu_fid_eq(&obj->lo_fid, &obj->lo_inodes[i].li_fid)) {
2068 * this is master object and this request should
2069 * be returned back to llite.
2073 ptlrpc_req_finished(req);
2081 tgt_exp = lmv_find_export(lmv, &op_data->op_fid1);
2082 if (IS_ERR(tgt_exp))
2083 RETURN(PTR_ERR(tgt_exp));
2085 rc = md_setattr(tgt_exp, op_data, ea, ealen, ea2,
2086 ea2len, request, mod);
2091 static int lmv_sync(struct obd_export *exp, const struct lu_fid *fid,
2092 struct obd_capa *oc, struct ptlrpc_request **request)
2094 struct obd_device *obd = exp->exp_obd;
2095 struct lmv_obd *lmv = &obd->u.lmv;
2096 struct obd_export *tgt_exp;
2100 rc = lmv_check_connect(obd);
2104 tgt_exp = lmv_find_export(lmv, fid);
2105 if (IS_ERR(tgt_exp))
2106 RETURN(PTR_ERR(tgt_exp));
2108 rc = md_sync(tgt_exp, fid, oc, request);
2112 /* main purpose of LMV blocking ast is to remove split directory LMV
2113 * presentation object (struct lmv_obj) attached to the lock being revoked. */
2114 int lmv_blocking_ast(struct ldlm_lock *lock,
2115 struct ldlm_lock_desc *desc,
2116 void *data, int flag)
2118 struct lustre_handle lockh;
2119 struct lmv_obj *obj;
2124 case LDLM_CB_BLOCKING:
2125 ldlm_lock2handle(lock, &lockh);
2126 rc = ldlm_cli_cancel(&lockh);
2128 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
2132 case LDLM_CB_CANCELING:
2133 /* time to drop cached attrs for dirobj */
2134 obj = lock->l_ast_data;
2136 CDEBUG(D_OTHER, "cancel %s on "LPU64"/"LPU64
2137 ", master "DFID"\n",
2138 lock->l_resource->lr_name.name[3] == 1 ?
2139 "LOOKUP" : "UPDATE",
2140 lock->l_resource->lr_name.name[0],
2141 lock->l_resource->lr_name.name[1],
2142 PFID(&obj->lo_fid));
2152 static void lmv_hash_adjust(__u32 *hash, __u32 hash_adj)
2156 val = le32_to_cpu(*hash);
2158 val += MAX_HASH_SIZE;
2159 if (val != DIR_END_OFF)
2160 *hash = cpu_to_le32(val - hash_adj);
2163 static __u32 lmv_node_rank(struct obd_export *exp, const struct lu_fid *fid)
2166 struct obd_import *imp;
2169 * XXX Hack: to get nid we assume that underlying obd device is mdc.
2171 imp = class_exp2cliimp(exp);
2172 id = imp->imp_connection->c_self + fid_flatten(fid);
2174 CDEBUG(D_INFO, "node rank: %llx "DFID" %llx %llx\n",
2175 imp->imp_connection->c_self, PFID(fid), id, id ^ (id >> 32));
2177 return id ^ (id >> 32);
2180 static int lmv_readpage(struct obd_export *exp, const struct lu_fid *fid,
2181 struct obd_capa *oc, __u64 offset64, struct page *page,
2182 struct ptlrpc_request **request)
2184 struct obd_device *obd = exp->exp_obd;
2185 struct lmv_obd *lmv = &obd->u.lmv;
2186 struct obd_export *tgt_exp;
2187 struct lu_fid rid = *fid;
2188 struct lmv_obj *obj;
2200 offset0 = offset = offset64;
2202 * Check that offset is representable by 32bit number.
2204 LASSERT((__u64)offset == offset64);
2206 rc = lmv_check_connect(obd);
2210 CDEBUG(D_INFO, "READPAGE at %x from "DFID"\n", offset, PFID(&rid));
2212 obj = lmv_obj_grab(obd, fid);
2214 struct lmv_inode *loi;
2218 nr = obj->lo_objcount;
2220 seg_size = MAX_HASH_SIZE / nr;
2221 loi = obj->lo_inodes;
2222 rank = lmv_node_rank(lmv_get_export(lmv, loi[0].li_mds),
2224 tgt0 = (offset / seg_size) % nr;
2225 tgt = (tgt0 + rank) % nr;
2231 * Last segment has unusual length due to division
2234 hash_adj = MAX_HASH_SIZE - seg_size * nr;
2238 hash_adj += rank * seg_size;
2240 CDEBUG(D_INFO, "hash_adj: %x %x %x/%x -> %x/%x\n",
2241 rank, hash_adj, offset, tgt0, offset + hash_adj, tgt);
2243 offset = (offset + hash_adj) % MAX_HASH_SIZE;
2244 rid = obj->lo_inodes[tgt].li_fid;
2245 tgt_exp = lmv_get_export(lmv, loi[tgt].li_mds);
2247 CDEBUG(D_INFO, "forward to "DFID" with offset %lu i %d\n",
2248 PFID(&rid), (unsigned long)offset, tgt);
2250 tgt_exp = lmv_find_export(lmv, &rid);
2252 if (IS_ERR(tgt_exp))
2253 GOTO(cleanup, rc = PTR_ERR(tgt_exp));
2255 rc = md_readpage(tgt_exp, &rid, oc, offset, page, request);
2259 struct lu_dirpage *dp;
2260 struct lu_dirent *ent;
2262 dp = cfs_kmap(page);
2264 lmv_hash_adjust(&dp->ldp_hash_start, hash_adj);
2265 lmv_hash_adjust(&dp->ldp_hash_end, hash_adj);
2266 LASSERT(cpu_to_le32(dp->ldp_hash_start) <= offset0);
2268 for (ent = lu_dirent_start(dp); ent != NULL;
2269 ent = lu_dirent_next(ent))
2270 lmv_hash_adjust(&ent->lde_hash, hash_adj);
2272 if (tgt0 != nr - 1) {
2275 end = le32_to_cpu(dp->ldp_hash_end);
2276 if (end == DIR_END_OFF) {
2277 dp->ldp_hash_end = cpu_to_le32(seg_size *
2279 CDEBUG(D_INFO, ""DFID" reset end %x tgt %d\n",
2281 le32_to_cpu(dp->ldp_hash_end), tgt);
2287 * Here we could remove "." and ".." from all pages which at not from
2288 * master. But MDS has only "." and ".." for master dir.
2293 lmv_obj_unlock(obj);
2299 static int lmv_unlink_slaves(struct obd_export *exp,
2300 struct md_op_data *op_data,
2301 struct ptlrpc_request **req)
2303 struct obd_device *obd = exp->exp_obd;
2304 struct lmv_obd *lmv = &obd->u.lmv;
2305 struct lmv_stripe_md *mea = op_data->op_mea1;
2306 struct md_op_data *op_data2;
2307 struct obd_export *tgt_exp;
2311 OBD_ALLOC_PTR(op_data2);
2312 if (op_data2 == NULL)
2315 op_data2->op_mode = S_IFDIR;
2316 op_data2->op_fsuid = current->fsuid;
2317 op_data2->op_fsgid = current->fsgid;
2318 op_data2->op_bias = 0;
2320 LASSERT(mea != NULL);
2321 for (i = 0; i < mea->mea_count; i++) {
2322 memset(op_data2, 0, sizeof(*op_data2));
2323 op_data2->op_fid1 = mea->mea_ids[i];
2324 tgt_exp = lmv_find_export(lmv, &op_data2->op_fid1);
2325 if (IS_ERR(tgt_exp))
2326 GOTO(out_free_op_data2, rc = PTR_ERR(tgt_exp));
2328 if (tgt_exp == NULL)
2331 rc = md_unlink(tgt_exp, op_data2, req);
2333 CDEBUG(D_OTHER, "unlink slave "DFID" -> %d\n",
2334 PFID(&mea->mea_ids[i]), rc);
2337 ptlrpc_req_finished(*req);
2341 GOTO(out_free_op_data2, rc);
2346 OBD_FREE_PTR(op_data2);
2350 static int lmv_unlink(struct obd_export *exp, struct md_op_data *op_data,
2351 struct ptlrpc_request **request)
2353 struct obd_device *obd = exp->exp_obd;
2354 struct lmv_obd *lmv = &obd->u.lmv;
2355 struct obd_export *tgt_exp = NULL;
2356 struct lmv_obj *obj;
2360 rc = lmv_check_connect(obd);
2364 if (op_data->op_namelen == 0 && op_data->op_mea1 != NULL) {
2365 /* mds asks to remove slave objects */
2366 rc = lmv_unlink_slaves(exp, op_data, request);
2373 if (op_data->op_namelen != 0) {
2376 obj = lmv_obj_grab(obd, &op_data->op_fid1);
2378 mea_idx = raw_name2idx(obj->lo_hashtype,
2381 op_data->op_namelen);
2382 op_data->op_bias &= ~MDS_CHECK_SPLIT;
2383 op_data->op_fid1 = obj->lo_inodes[mea_idx].li_fid;
2384 tgt_exp = lmv_get_export(lmv,
2385 obj->lo_inodes[mea_idx].li_mds);
2387 CDEBUG(D_OTHER, "unlink '%*s' in "DFID" -> %u\n",
2388 op_data->op_namelen, op_data->op_name,
2389 PFID(&op_data->op_fid1), mea_idx);
2392 CDEBUG(D_OTHER, "drop i_nlink on "DFID"\n",
2393 PFID(&op_data->op_fid1));
2395 if (tgt_exp == NULL) {
2396 tgt_exp = lmv_find_export(lmv, &op_data->op_fid1);
2397 if (IS_ERR(tgt_exp))
2398 RETURN(PTR_ERR(tgt_exp));
2399 op_data->op_bias |= MDS_CHECK_SPLIT;
2402 op_data->op_fsuid = current->fsuid;
2403 op_data->op_fsgid = current->fsgid;
2404 op_data->op_cap = current->cap_effective;
2406 /* If child's fid is given, cancel unused locks for it if it is from
2407 * another export than parent. */
2408 if (op_data->op_namelen) {
2409 /* LOOKUP lock for child (fid3) should also be cancelled on
2410 * parent tgt_exp in mdc_unlink(). */
2411 op_data->op_flags |= MF_MDC_CANCEL_FID1 | MF_MDC_CANCEL_FID3;
2413 /* XXX: the case when child is a striped dir is not supported.
2414 * Only the master stripe has all locks cancelled early. */
2415 /* Cancel FULL locks on child (fid3). */
2416 rc = lmv_early_cancel(lmv, tgt_exp, NULL, op_data, LCK_EX,
2417 MDS_INODELOCK_FULL, MF_MDC_CANCEL_FID3);
2420 rc = md_unlink(tgt_exp, op_data, request);
2421 if (rc == -ERESTART) {
2422 LASSERT(*request != NULL);
2423 DEBUG_REQ(D_WARNING|D_RPCTRACE, *request,
2424 "Got -ERESTART during unlink!\n");
2425 ptlrpc_req_finished(*request);
2429 * Directory got split. Time to update local object and repeat
2430 * the request with proper MDS.
2432 rc = lmv_handle_split(exp, &op_data->op_fid1);
2439 static int lmv_llog_init(struct obd_device *obd, struct obd_llogs* llogs,
2440 struct obd_device *tgt, int count,
2441 struct llog_catid *logid, struct obd_uuid *uuid)
2443 struct llog_ctxt *ctxt;
2447 rc = llog_setup(obd, llogs, LLOG_CONFIG_REPL_CTXT, tgt, 0, NULL,
2450 ctxt = llog_get_context(obd, LLOG_CONFIG_REPL_CTXT);
2451 ctxt->loc_imp = tgt->u.cli.cl_import;
2457 static int lmv_llog_finish(struct obd_device *obd, int count)
2462 rc = llog_cleanup(llog_get_context(obd, LLOG_CONFIG_REPL_CTXT));
2466 static int lmv_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
2471 case OBD_CLEANUP_EARLY:
2472 /* XXX: here should be calling obd_precleanup() down to
2475 case OBD_CLEANUP_SELF_EXP:
2476 rc = obd_llog_finish(obd, 0);
2478 CERROR("failed to cleanup llogging subsystems\n");
2486 static int lmv_get_info(struct obd_export *exp, __u32 keylen,
2487 void *key, __u32 *vallen, void *val)
2489 struct obd_device *obd;
2490 struct lmv_obd *lmv;
2494 obd = class_exp2obd(exp);
2496 CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n",
2497 exp->exp_handle.h_cookie);
2502 if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) {
2503 struct lmv_tgt_desc *tgts;
2506 rc = lmv_check_connect(obd);
2510 LASSERT(*vallen == sizeof(__u32));
2511 for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count;
2514 /* all tgts should be connected when this get called. */
2515 if (!tgts || !tgts->ltd_exp) {
2516 CERROR("target not setup?\n");
2520 if (!obd_get_info(tgts->ltd_exp, keylen, key,
2525 } else if (KEY_IS(KEY_MAX_EASIZE) || KEY_IS(KEY_CONN_DATA)) {
2526 rc = lmv_check_connect(obd);
2530 /* forwarding this request to first MDS, it should know LOV
2532 rc = obd_get_info(lmv->tgts[0].ltd_exp, keylen, key,
2534 if (!rc && KEY_IS(KEY_CONN_DATA)) {
2535 exp->exp_connect_flags =
2536 ((struct obd_connect_data *)val)->ocd_connect_flags;
2541 CDEBUG(D_IOCTL, "invalid key\n");
2545 int lmv_set_info_async(struct obd_export *exp, obd_count keylen,
2546 void *key, obd_count vallen, void *val,
2547 struct ptlrpc_request_set *set)
2549 struct lmv_tgt_desc *tgt;
2550 struct obd_device *obd;
2551 struct lmv_obd *lmv;
2555 obd = class_exp2obd(exp);
2557 CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n",
2558 exp->exp_handle.h_cookie);
2563 if (KEY_IS(KEY_READ_ONLY) || KEY_IS(KEY_FLUSH_CTX) ||
2564 KEY_IS(KEY_INIT_RECOV_BACKUP)) {
2567 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2568 tgt = &lmv->tgts[i];
2573 err = obd_set_info_async(tgt->ltd_exp,
2574 keylen, key, vallen, val, set);
2585 int lmv_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
2586 struct lov_stripe_md *lsm)
2588 struct obd_device *obd = class_exp2obd(exp);
2589 struct lmv_obd *lmv = &obd->u.lmv;
2590 struct lmv_stripe_md *meap, *lsmp;
2594 mea_size = lmv_get_easize(lmv);
2598 if (*lmmp && !lsm) {
2599 OBD_FREE(*lmmp, mea_size);
2604 if (*lmmp == NULL) {
2605 OBD_ALLOC(*lmmp, mea_size);
2613 lsmp = (struct lmv_stripe_md *)lsm;
2614 meap = (struct lmv_stripe_md *)*lmmp;
2616 if (lsmp->mea_magic != MEA_MAGIC_LAST_CHAR &&
2617 lsmp->mea_magic != MEA_MAGIC_ALL_CHARS)
2620 meap->mea_magic = cpu_to_le32(lsmp->mea_magic);
2621 meap->mea_count = cpu_to_le32(lsmp->mea_count);
2622 meap->mea_master = cpu_to_le32(lsmp->mea_master);
2624 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2625 meap->mea_ids[i] = meap->mea_ids[i];
2626 fid_cpu_to_le(&meap->mea_ids[i], &meap->mea_ids[i]);
2632 int lmv_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
2633 struct lov_mds_md *lmm, int lmm_size)
2635 struct obd_device *obd = class_exp2obd(exp);
2636 struct lmv_stripe_md **tmea = (struct lmv_stripe_md **)lsmp;
2637 struct lmv_stripe_md *mea = (struct lmv_stripe_md *)lmm;
2638 struct lmv_obd *lmv = &obd->u.lmv;
2643 mea_size = lmv_get_easize(lmv);
2647 if (*lsmp != NULL && lmm == NULL) {
2648 OBD_FREE(*tmea, mea_size);
2653 LASSERT(mea_size == lmm_size);
2655 OBD_ALLOC(*tmea, mea_size);
2662 if (mea->mea_magic == MEA_MAGIC_LAST_CHAR ||
2663 mea->mea_magic == MEA_MAGIC_ALL_CHARS ||
2664 mea->mea_magic == MEA_MAGIC_HASH_SEGMENT)
2666 magic = le32_to_cpu(mea->mea_magic);
2668 /* old mea is not handled here */
2672 (*tmea)->mea_magic = magic;
2673 (*tmea)->mea_count = le32_to_cpu(mea->mea_count);
2674 (*tmea)->mea_master = le32_to_cpu(mea->mea_master);
2676 for (i = 0; i < (*tmea)->mea_count; i++) {
2677 (*tmea)->mea_ids[i] = mea->mea_ids[i];
2678 fid_le_to_cpu(&(*tmea)->mea_ids[i], &(*tmea)->mea_ids[i]);
2683 static int lmv_cancel_unused(struct obd_export *exp,
2684 const struct lu_fid *fid,
2685 ldlm_policy_data_t *policy,
2686 ldlm_mode_t mode, int flags, void *opaque)
2688 struct obd_device *obd = exp->exp_obd;
2689 struct lmv_obd *lmv = &obd->u.lmv;
2693 LASSERT(fid != NULL);
2695 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2696 if (!lmv->tgts[i].ltd_exp || !lmv->tgts[i].ltd_active)
2699 err = md_cancel_unused(lmv->tgts[i].ltd_exp, fid,
2700 policy, mode, flags, opaque);
2707 int lmv_set_lock_data(struct obd_export *exp, __u64 *lockh, void *data)
2709 struct obd_device *obd = exp->exp_obd;
2710 struct lmv_obd *lmv = &obd->u.lmv;
2713 RETURN(md_set_lock_data(lmv->tgts[0].ltd_exp, lockh, data));
2716 ldlm_mode_t lmv_lock_match(struct obd_export *exp, int flags,
2717 const struct lu_fid *fid, ldlm_type_t type,
2718 ldlm_policy_data_t *policy, ldlm_mode_t mode,
2719 struct lustre_handle *lockh)
2721 struct obd_device *obd = exp->exp_obd;
2722 struct lmv_obd *lmv = &obd->u.lmv;
2727 CDEBUG(D_OTHER, "lock match for "DFID"\n", PFID(fid));
2729 /* with CMD every object can have two locks in different namespaces:
2730 * lookup lock in space of mds storing direntry and update/open lock in
2731 * space of mds storing inode. Thus we check all targets, not only that
2732 * one fid was created in. */
2733 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2734 rc = md_lock_match(lmv->tgts[i].ltd_exp, flags, fid,
2735 type, policy, mode, lockh);
2743 int lmv_get_lustre_md(struct obd_export *exp, struct ptlrpc_request *req,
2744 int offset, struct obd_export *dt_exp,
2745 struct obd_export *md_exp, struct lustre_md *md)
2747 struct obd_device *obd = exp->exp_obd;
2748 struct lmv_obd *lmv = &obd->u.lmv;
2752 rc = md_get_lustre_md(lmv->tgts[0].ltd_exp, req, offset, dt_exp, md_exp,
2757 int lmv_free_lustre_md(struct obd_export *exp, struct lustre_md *md)
2759 struct obd_device *obd = exp->exp_obd;
2760 struct lmv_obd *lmv = &obd->u.lmv;
2764 obd_free_memmd(exp, (struct lov_stripe_md**)&md->mea);
2765 RETURN(md_free_lustre_md(lmv->tgts[0].ltd_exp, md));
2768 int lmv_set_open_replay_data(struct obd_export *exp,
2769 struct obd_client_handle *och,
2770 struct ptlrpc_request *open_req)
2772 struct obd_device *obd = exp->exp_obd;
2773 struct lmv_obd *lmv = &obd->u.lmv;
2774 struct obd_export *tgt_exp;
2778 tgt_exp = lmv_find_export(lmv, &och->och_fid);
2779 if (IS_ERR(tgt_exp))
2780 RETURN(PTR_ERR(tgt_exp));
2782 RETURN(md_set_open_replay_data(tgt_exp, och, open_req));
2785 int lmv_clear_open_replay_data(struct obd_export *exp,
2786 struct obd_client_handle *och)
2788 struct obd_device *obd = exp->exp_obd;
2789 struct lmv_obd *lmv = &obd->u.lmv;
2790 struct obd_export *tgt_exp;
2793 tgt_exp = lmv_find_export(lmv, &och->och_fid);
2794 if (IS_ERR(tgt_exp))
2795 RETURN(PTR_ERR(tgt_exp));
2797 RETURN(md_clear_open_replay_data(tgt_exp, och));
2800 static int lmv_get_remote_perm(struct obd_export *exp,
2801 const struct lu_fid *fid,
2802 struct obd_capa *oc, __u32 suppgid,
2803 struct ptlrpc_request **request)
2805 struct obd_device *obd = exp->exp_obd;
2806 struct lmv_obd *lmv = &obd->u.lmv;
2807 struct obd_export *tgt_exp;
2812 rc = lmv_check_connect(obd);
2816 tgt_exp = lmv_find_export(lmv, fid);
2817 if (IS_ERR(tgt_exp))
2818 RETURN(PTR_ERR(tgt_exp));
2820 rc = md_get_remote_perm(tgt_exp, fid, oc, suppgid, request);
2825 static int lmv_renew_capa(struct obd_export *exp, struct obd_capa *oc,
2828 struct obd_device *obd = exp->exp_obd;
2829 struct lmv_obd *lmv = &obd->u.lmv;
2830 struct obd_export *tgt_exp;
2834 rc = lmv_check_connect(obd);
2838 tgt_exp = lmv_find_export(lmv, &oc->c_capa.lc_fid);
2839 if (IS_ERR(tgt_exp))
2840 RETURN(PTR_ERR(tgt_exp));
2842 rc = md_renew_capa(tgt_exp, oc, cb);
2846 struct obd_ops lmv_obd_ops = {
2847 .o_owner = THIS_MODULE,
2848 .o_setup = lmv_setup,
2849 .o_cleanup = lmv_cleanup,
2850 .o_precleanup = lmv_precleanup,
2851 .o_process_config = lmv_process_config,
2852 .o_connect = lmv_connect,
2853 .o_disconnect = lmv_disconnect,
2854 .o_statfs = lmv_statfs,
2855 .o_llog_init = lmv_llog_init,
2856 .o_llog_finish = lmv_llog_finish,
2857 .o_get_info = lmv_get_info,
2858 .o_set_info_async = lmv_set_info_async,
2859 .o_packmd = lmv_packmd,
2860 .o_unpackmd = lmv_unpackmd,
2861 .o_notify = lmv_notify,
2862 .o_iocontrol = lmv_iocontrol,
2863 .o_fid_delete = lmv_fid_delete
2866 struct md_ops lmv_md_ops = {
2867 .m_getstatus = lmv_getstatus,
2868 .m_change_cbdata = lmv_change_cbdata,
2869 .m_close = lmv_close,
2870 .m_create = lmv_create,
2871 .m_done_writing = lmv_done_writing,
2872 .m_enqueue = lmv_enqueue,
2873 .m_getattr = lmv_getattr,
2874 .m_getxattr = lmv_getxattr,
2875 .m_getattr_name = lmv_getattr_name,
2876 .m_intent_lock = lmv_intent_lock,
2878 .m_rename = lmv_rename,
2879 .m_setattr = lmv_setattr,
2880 .m_setxattr = lmv_setxattr,
2882 .m_readpage = lmv_readpage,
2883 .m_unlink = lmv_unlink,
2884 .m_init_ea_size = lmv_init_ea_size,
2885 .m_cancel_unused = lmv_cancel_unused,
2886 .m_set_lock_data = lmv_set_lock_data,
2887 .m_lock_match = lmv_lock_match,
2888 .m_get_lustre_md = lmv_get_lustre_md,
2889 .m_free_lustre_md = lmv_free_lustre_md,
2890 .m_set_open_replay_data = lmv_set_open_replay_data,
2891 .m_clear_open_replay_data = lmv_clear_open_replay_data,
2892 .m_get_remote_perm = lmv_get_remote_perm,
2893 .m_renew_capa = lmv_renew_capa
2896 int __init lmv_init(void)
2898 struct lprocfs_static_vars lvars;
2901 obj_cache = cfs_mem_cache_create("lmv_objects",
2902 sizeof(struct lmv_obj),
2905 CERROR("error allocating lmv objects cache\n");
2909 lprocfs_lmv_init_vars(&lvars);
2910 rc = class_register_type(&lmv_obd_ops, &lmv_md_ops,
2911 lvars.module_vars, LUSTRE_LMV_NAME, NULL);
2913 cfs_mem_cache_destroy(obj_cache);
2919 static void lmv_exit(void)
2923 class_unregister_type(LUSTRE_LMV_NAME);
2925 rc = cfs_mem_cache_destroy(obj_cache);
2927 "can't free lmv objects cache, %d object(s)"
2928 "still in use\n", atomic_read(&obj_cache_count));
2931 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
2932 MODULE_DESCRIPTION("Lustre Logical Metadata Volume OBD driver");
2933 MODULE_LICENSE("GPL");
2935 module_init(lmv_init);
2936 module_exit(lmv_exit);