1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002, 2003 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>
32 #include <asm/div64.h>
33 #include <linux/seq_file.h>
34 #include <linux/namei.h>
36 #include <liblustre.h>
38 #include <linux/ext2_fs.h>
40 #include <linux/obd_support.h>
41 #include <linux/lustre_lib.h>
42 #include <linux/lustre_net.h>
43 #include <linux/lustre_idl.h>
44 #include <linux/lustre_dlm.h>
45 #include <linux/lustre_mds.h>
46 #include <linux/obd_class.h>
47 #include <linux/obd_ost.h>
48 #include <linux/lprocfs_status.h>
49 #include <linux/lustre_fsfilt.h>
50 #include <linux/obd_lmv.h>
51 #include <linux/lustre_lite.h>
52 #include <linux/lustre_audit.h>
53 #include "lmv_internal.h"
55 /* not defined for liblustre building */
56 #if !defined(ATOMIC_INIT)
57 #define ATOMIC_INIT(val) { (val) }
61 kmem_cache_t *obj_cache;
62 atomic_t obj_cache_count = ATOMIC_INIT(0);
64 static void lmv_activate_target(struct lmv_obd *lmv,
65 struct lmv_tgt_desc *tgt,
68 if (tgt->active == activate)
71 tgt->active = activate;
72 lmv->desc.ld_active_tgt_count += (activate ? 1 : -1);
77 * -EINVAL : UUID can't be found in the LMV's target list
78 * -ENOTCONN: The UUID is found, but the target connection is bad (!)
79 * -EBADF : The UUID is found, but the OBD of the wrong type (!)
81 static int lmv_set_mdc_active(struct lmv_obd *lmv, struct obd_uuid *uuid,
84 struct lmv_tgt_desc *tgt;
85 struct obd_device *obd;
89 CDEBUG(D_INFO, "Searching in lmv %p for uuid %s (activate=%d)\n",
90 lmv, uuid->uuid, activate);
92 spin_lock(&lmv->lmv_lock);
93 for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgt++) {
94 if (tgt->ltd_exp == NULL)
97 CDEBUG(D_INFO, "lmv idx %d is %s conn "LPX64"\n",
98 i, tgt->uuid.uuid, tgt->ltd_exp->exp_handle.h_cookie);
100 if (obd_uuid_equals(uuid, &tgt->uuid))
104 if (i == lmv->desc.ld_tgt_count)
105 GOTO(out_lmv_lock, rc = -EINVAL);
107 obd = class_exp2obd(tgt->ltd_exp);
109 GOTO(out_lmv_lock, rc = -ENOTCONN);
111 CDEBUG(D_INFO, "Found OBD %s=%s device %d (%p) type %s at LMV idx %d\n",
112 obd->obd_name, obd->obd_uuid.uuid, obd->obd_minor, obd,
113 obd->obd_type->typ_name, i);
114 LASSERT(strcmp(obd->obd_type->typ_name, OBD_MDC_DEVICENAME) == 0);
116 if (tgt->active == activate) {
117 CDEBUG(D_INFO, "OBD %p already %sactive!\n", obd,
118 activate ? "" : "in");
119 GOTO(out_lmv_lock, rc);
122 CDEBUG(D_INFO, "Marking OBD %p %sactive\n",
123 obd, activate ? "" : "in");
125 lmv_activate_target(lmv, tgt, activate);
130 spin_unlock(&lmv->lmv_lock);
134 static int lmv_notify(struct obd_device *obd, struct obd_device *watched,
135 int active, void *data)
137 struct obd_uuid *uuid;
141 if (strcmp(watched->obd_type->typ_name, OBD_MDC_DEVICENAME)) {
142 CERROR("unexpected notification of %s %s!\n",
143 watched->obd_type->typ_name,
147 uuid = &watched->u.cli.cl_import->imp_target_uuid;
149 /* Set MDC as active before notifying the observer, so the observer can
150 * use the MDC normally.
152 rc = lmv_set_mdc_active(&obd->u.lmv, uuid, active);
154 CERROR("%sactivation of %s failed: %d\n",
155 active ? "" : "de", uuid->uuid, rc);
159 if (obd->obd_observer)
160 /* Pass the notification up the chain. */
161 rc = obd_notify(obd->obd_observer, watched, active, data);
166 static int lmv_attach(struct obd_device *dev, obd_count len, void *data)
168 struct lprocfs_static_vars lvars;
172 lprocfs_init_vars(lmv, &lvars);
173 rc = lprocfs_obd_attach(dev, lvars.obd_vars);
176 struct proc_dir_entry *entry;
178 entry = create_proc_entry("target_obd_status", 0444,
179 dev->obd_proc_entry);
182 entry->proc_fops = &lmv_proc_target_fops;
189 static int lmv_detach(struct obd_device *dev)
191 return lprocfs_obd_detach(dev);
194 /* this is fake connect function. Its purpose is to initialize lmv and say
195 * caller that everything is okay. Real connection will be performed later. */
196 static int lmv_connect(struct lustre_handle *conn, struct obd_device *obd,
197 struct obd_uuid *cluuid, struct obd_connect_data *data,
201 struct proc_dir_entry *lmv_proc_dir;
203 struct lmv_obd *lmv = &obd->u.lmv;
204 struct obd_export *exp;
208 rc = class_connect(conn, obd, cluuid);
210 CERROR("class_connection() returned %d\n", rc);
214 exp = class_conn2export(conn);
216 /* we don't want to actually do the underlying connections more than
217 * once, so keep track. */
219 if (lmv->refcount > 1) {
220 class_export_put(exp);
226 lmv->cluuid = *cluuid;
227 lmv->connect_flags = flags;
228 sema_init(&lmv->init_sem, 1);
230 memcpy(&lmv->conn_data, data, sizeof(*data));
233 lmv_proc_dir = lprocfs_register("target_obds", obd->obd_proc_entry,
235 if (IS_ERR(lmv_proc_dir)) {
236 CERROR("could not register /proc/fs/lustre/%s/%s/target_obds.",
237 obd->obd_type->typ_name, obd->obd_name);
243 * all real clients shouls perform actual connection rightaway, because
244 * it is possible, that LMV will not have opportunity to connect
245 * targets, as MDC stuff will bit called directly, for instance while
246 * reading ../mdc/../kbytesfree procfs file, etc.
248 if (flags & OBD_OPT_REAL_CLIENT)
249 rc = lmv_check_connect(obd);
254 lprocfs_remove(lmv_proc_dir);
261 static void lmv_set_timeouts(struct obd_device *obd)
263 struct lmv_tgt_desc *tgts;
268 if (lmv->server_timeout == 0)
271 if (lmv->connected == 0)
274 for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgts++) {
275 if (tgts->ltd_exp == NULL)
278 obd_set_info(tgts->ltd_exp, strlen("inter_mds"),
279 "inter_mds", 0, NULL);
283 #define MAX_STRING_SIZE 128
285 /* performs a check if passed obd is connected. If no - connect it. */
286 int lmv_check_connect(struct obd_device *obd)
289 struct proc_dir_entry *lmv_proc_dir;
291 struct lmv_obd *lmv = &obd->u.lmv;
292 struct lmv_tgt_desc *tgts;
293 struct obd_uuid *cluuid;
294 struct obd_export *exp;
301 down(&lmv->init_sem);
302 if (lmv->connected) {
307 cluuid = &lmv->cluuid;
310 CDEBUG(D_OTHER, "time to connect %s to %s\n",
311 cluuid->uuid, obd->obd_name);
313 for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgts++) {
314 struct obd_uuid lmv_mdc_uuid = { "LMV_MDC_UUID" };
315 struct lustre_handle conn = {0, };
316 struct obd_device *tgt_obd;
318 LASSERT(tgts != NULL);
320 tgt_obd = class_find_client_obd(&tgts->uuid, OBD_MDC_DEVICENAME,
323 CERROR("target %s not attached\n", tgts->uuid.uuid);
324 GOTO(out_disc, rc = -EINVAL);
327 /* for MDS: don't connect to yourself */
328 if (obd_uuid_equals(&tgts->uuid, cluuid)) {
329 CDEBUG(D_OTHER, "don't connect back to %s\n",
331 tgts->ltd_exp = NULL;
335 CDEBUG(D_OTHER, "connect to %s(%s) - %s, %s FOR %s\n",
336 tgt_obd->obd_name, tgt_obd->obd_uuid.uuid,
337 tgts->uuid.uuid, obd->obd_uuid.uuid,
340 if (!tgt_obd->obd_set_up) {
341 CERROR("target %s not set up\n", tgts->uuid.uuid);
342 GOTO(out_disc, rc = -EINVAL);
345 rc = obd_connect(&conn, tgt_obd, &lmv_mdc_uuid, &lmv->conn_data,
348 CERROR("target %s connect error %d\n",
349 tgts->uuid.uuid, rc);
352 tgts->ltd_exp = class_conn2export(&conn);
354 obd_init_ea_size(tgts->ltd_exp, lmv->max_easize,
355 lmv->max_cookiesize);
357 rc = obd_register_observer(tgt_obd, obd);
359 CERROR("target %s register_observer error %d\n",
360 tgts->uuid.uuid, rc);
361 obd_disconnect(tgts->ltd_exp, 0);
365 lmv->desc.ld_active_tgt_count++;
368 CDEBUG(D_OTHER, "connected to %s(%s) successfully (%d)\n",
369 tgt_obd->obd_name, tgt_obd->obd_uuid.uuid,
370 atomic_read(&obd->obd_refcount));
373 lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
375 struct obd_device *mdc_obd = class_conn2obd(&conn);
376 struct proc_dir_entry *mdc_symlink;
377 char name[MAX_STRING_SIZE + 1];
379 LASSERT(mdc_obd != NULL);
380 LASSERT(mdc_obd->obd_type != NULL);
381 LASSERT(mdc_obd->obd_type->typ_name != NULL);
382 name[MAX_STRING_SIZE] = '\0';
383 snprintf(name, MAX_STRING_SIZE, "../../../%s/%s",
384 mdc_obd->obd_type->typ_name,
386 mdc_symlink = proc_symlink(mdc_obd->obd_name,
388 if (mdc_symlink == NULL) {
389 CERROR("could not register LMV target "
390 "/proc/fs/lustre/%s/%s/target_obds/%s.",
391 obd->obd_type->typ_name, obd->obd_name,
393 lprocfs_remove(lmv_proc_dir);
400 lmv_set_timeouts(obd);
401 class_export_put(exp);
408 struct obd_uuid uuid;
410 --lmv->desc.ld_active_tgt_count;
412 /* save for CERROR below; (we know it's terminated) */
414 rc2 = obd_disconnect(tgts->ltd_exp, 0);
416 CERROR("error: LMV target %s disconnect on MDC idx %d: "
417 "error %d\n", uuid.uuid, i, rc2);
419 class_disconnect(exp, 0);
424 static int lmv_disconnect(struct obd_export *exp, unsigned long flags)
426 struct obd_device *obd = class_exp2obd(exp);
427 struct lmv_obd *lmv = &obd->u.lmv;
430 struct proc_dir_entry *lmv_proc_dir;
438 /* Only disconnect the underlying layers on the final disconnect. */
440 if (lmv->refcount != 0)
444 lmv_proc_dir = lprocfs_srch(obd->obd_proc_entry, "target_obds");
447 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
448 struct obd_device *mdc_obd;
450 if (lmv->tgts[i].ltd_exp == NULL)
453 mdc_obd = class_exp2obd(lmv->tgts[i].ltd_exp);
456 mdc_obd->obd_no_recov = obd->obd_no_recov;
460 struct proc_dir_entry *mdc_symlink;
462 mdc_symlink = lprocfs_srch(lmv_proc_dir, mdc_obd->obd_name);
464 lprocfs_remove(mdc_symlink);
466 CERROR("/proc/fs/lustre/%s/%s/target_obds/%s missing\n",
467 obd->obd_type->typ_name, obd->obd_name,
472 CDEBUG(D_OTHER, "disconnected from %s(%s) successfully\n",
473 lmv->tgts[i].ltd_exp->exp_obd->obd_name,
474 lmv->tgts[i].ltd_exp->exp_obd->obd_uuid.uuid);
476 obd_register_observer(lmv->tgts[i].ltd_exp->exp_obd, NULL);
477 rc = obd_disconnect(lmv->tgts[i].ltd_exp, flags);
479 if (lmv->tgts[i].active) {
480 CERROR("Target %s disconnect error %d\n",
481 lmv->tgts[i].uuid.uuid, rc);
486 lmv_activate_target(lmv, &lmv->tgts[i], 0);
487 lmv->tgts[i].ltd_exp = NULL;
492 lprocfs_remove(lmv_proc_dir);
494 CERROR("/proc/fs/lustre/%s/%s/target_obds missing\n",
495 obd->obd_type->typ_name, obd->obd_name);
500 /* this is the case when no real connection is established by
501 * lmv_check_connect(). */
503 class_export_put(exp);
504 rc = class_disconnect(exp, 0);
505 if (lmv->refcount == 0)
510 static int lmv_iocontrol(unsigned int cmd, struct obd_export *exp,
511 int len, void *karg, void *uarg)
513 struct obd_device *obddev = class_exp2obd(exp);
514 struct lmv_obd *lmv = &obddev->u.lmv;
515 int i, rc = 0, set = 0;
518 if (lmv->desc.ld_tgt_count == 0)
521 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
524 if (lmv->tgts[i].ltd_exp == NULL)
527 err = obd_iocontrol(cmd, lmv->tgts[i].ltd_exp, len, karg, uarg);
529 if (lmv->tgts[i].active) {
530 CERROR("error: iocontrol MDC %s on MDT"
531 "idx %d: err = %d\n",
532 lmv->tgts[i].uuid.uuid, i, err);
545 static int lmv_setup(struct obd_device *obd, obd_count len, void *buf)
548 struct lmv_desc *desc;
549 struct obd_uuid *uuids;
550 struct lmv_tgt_desc *tgts;
551 struct obd_device *tgt_obd;
552 struct lustre_cfg *lcfg = buf;
553 struct lmv_obd *lmv = &obd->u.lmv;
556 if (LUSTRE_CFG_BUFLEN(lcfg, 1) < 1) {
557 CERROR("LMV setup requires a descriptor\n");
561 if (LUSTRE_CFG_BUFLEN(lcfg, 2) < 1) {
562 CERROR("LMV setup requires an MDT UUID list\n");
566 desc = (struct lmv_desc *)lustre_cfg_buf(lcfg, 1);
567 if (sizeof(*desc) > LUSTRE_CFG_BUFLEN(lcfg, 1)) {
568 CERROR("descriptor size wrong: %d > %d\n",
569 (int)sizeof(*desc), LUSTRE_CFG_BUFLEN(lcfg, 1));
573 uuids = (struct obd_uuid *)lustre_cfg_buf(lcfg, 2);
574 if (sizeof(*uuids) * desc->ld_tgt_count != LUSTRE_CFG_BUFLEN(lcfg, 2)) {
575 CERROR("UUID array size wrong: %u * %u != %u\n",
576 sizeof(*uuids), desc->ld_tgt_count, LUSTRE_CFG_BUFLEN(lcfg, 2));
580 lmv->tgts_size = sizeof(struct lmv_tgt_desc) * desc->ld_tgt_count;
581 OBD_ALLOC(lmv->tgts, lmv->tgts_size);
582 if (lmv->tgts == NULL) {
583 CERROR("Out of memory\n");
588 spin_lock_init(&lmv->lmv_lock);
590 for (i = 0, tgts = lmv->tgts; i < desc->ld_tgt_count; i++, tgts++)
591 tgts->uuid = uuids[i];
593 lmv->max_cookiesize = 0;
595 lmv->max_easize = sizeof(struct lustre_id) *
596 desc->ld_tgt_count + sizeof(struct mea);
598 rc = lmv_setup_mgr(obd);
600 CERROR("Can't setup LMV object manager, "
602 OBD_FREE(lmv->tgts, lmv->tgts_size);
606 tgt_obd = class_find_client_obd(&lmv->tgts->uuid, OBD_MDC_DEVICENAME,
609 CERROR("Target %s not attached\n", lmv->tgts->uuid.uuid);
613 rc = obd_llog_init(obd, &obd->obd_llogs, tgt_obd, 0, NULL);
615 CERROR("lmv_setup failed to setup llogging subsystems\n");
621 static int lmv_cleanup(struct obd_device *obd, int flags)
623 struct lmv_obd *lmv = &obd->u.lmv;
626 lmv_cleanup_mgr(obd);
627 OBD_FREE(lmv->tgts, lmv->tgts_size);
632 static int lmv_statfs(struct obd_device *obd, struct obd_statfs *osfs,
633 unsigned long max_age)
635 struct lmv_obd *lmv = &obd->u.lmv;
636 struct obd_statfs *temp;
640 rc = lmv_check_connect(obd);
644 OBD_ALLOC(temp, sizeof(*temp));
648 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
649 if (lmv->tgts[i].ltd_exp == NULL)
652 rc = obd_statfs(lmv->tgts[i].ltd_exp->exp_obd, temp, max_age);
654 CERROR("can't stat MDS #%d (%s), error %d\n", i,
655 lmv->tgts[i].ltd_exp->exp_obd->obd_name,
657 GOTO(out_free_temp, rc);
660 memcpy(osfs, temp, sizeof(*temp));
662 osfs->os_bavail += temp->os_bavail;
663 osfs->os_blocks += temp->os_blocks;
664 osfs->os_ffree += temp->os_ffree;
665 osfs->os_files += temp->os_files;
671 OBD_FREE(temp, sizeof(*temp));
675 static int lmv_getstatus(struct obd_export *exp, struct lustre_id *id)
677 struct obd_device *obd = exp->exp_obd;
678 struct lmv_obd *lmv = &obd->u.lmv;
682 rc = lmv_check_connect(obd);
686 rc = md_getstatus(lmv->tgts[0].ltd_exp, id);
692 static int lmv_getattr(struct obd_export *exp, struct lustre_id *id,
693 __u64 valid, const char *xattr_name,
694 const void *xattr_data, unsigned int xattr_datalen,
695 unsigned int ea_size, struct obd_capa *ocapa,
696 struct ptlrpc_request **request)
698 struct obd_device *obd = exp->exp_obd;
699 struct lmv_obd *lmv = &obd->u.lmv;
700 int rc, i = id_group(id);
704 rc = lmv_check_connect(obd);
708 LASSERT(i < lmv->desc.ld_tgt_count);
711 rc = md_getattr(lmv->tgts[i].ltd_exp, id, valid,
712 xattr_name, xattr_data, xattr_datalen,
713 ea_size, ocapa, request);
717 obj = lmv_grab_obj(obd, id);
719 CDEBUG(D_OTHER, "GETATTR for "DLID4" %s\n",
720 OLID4(id), obj ? "(splitted)" : "");
723 * if object is splitted, then we loop over all the slaves and gather
724 * size attribute. In ideal world we would have to gather also mds field
725 * from all slaves, as object is spread over the cluster and this is
726 * definitely interesting information and it is not good to loss it,
730 struct mds_body *body;
732 if (*request == NULL) {
737 body = lustre_msg_buf((*request)->rq_repmsg, 0,
739 LASSERT(body != NULL);
743 for (i = 0; i < obj->objcount; i++) {
745 if (lmv->tgts[i].ltd_exp == NULL) {
746 CWARN("%s: NULL export for %d\n",
751 /* skip master obj. */
752 if (id_equal_fid(&obj->id, &obj->objs[i].id))
755 body->size += obj->objs[i].size;
765 static int lmv_access_check(struct obd_export *exp,
766 struct lustre_id *id,
767 struct ptlrpc_request **request)
769 struct obd_device *obd = exp->exp_obd;
770 struct lmv_obd *lmv = &obd->u.lmv;
771 int rc, i = id_group(id);
774 rc = lmv_check_connect(obd);
778 LASSERT(i < lmv->desc.ld_tgt_count);
779 rc = md_access_check(lmv->tgts[i].ltd_exp, id, request);
783 static int lmv_change_cbdata(struct obd_export *exp,
784 struct lustre_id *id,
788 struct obd_device *obd = exp->exp_obd;
789 struct lmv_obd *lmv = &obd->u.lmv;
793 rc = lmv_check_connect(obd);
797 CDEBUG(D_OTHER, "CBDATA for "DLID4"\n", OLID4(id));
798 LASSERT(id_group(id) < lmv->desc.ld_tgt_count);
800 /* with CMD every object can have two locks in different
801 * namespaces: lookup lock in space of mds storing direntry
802 * and update/open lock in space of mds storing inode */
803 for (i = 0; i < lmv->desc.ld_tgt_count; i++)
804 md_change_cbdata(lmv->tgts[i].ltd_exp, id, it, data);
809 static int lmv_change_cbdata_name(struct obd_export *exp,
810 struct lustre_id *pid,
812 struct lustre_id *cid,
816 struct obd_device *obd = exp->exp_obd;
817 struct lmv_obd *lmv = &obd->u.lmv;
818 struct lustre_id rcid = *cid;
823 rc = lmv_check_connect(obd);
827 LASSERT(id_group(pid) < lmv->desc.ld_tgt_count);
828 LASSERT(id_group(cid) < lmv->desc.ld_tgt_count);
830 CDEBUG(D_OTHER, "CBDATA for "DLID4":%*s -> "DLID4"\n",
831 OLID4(pid), len, name, OLID4(cid));
833 /* this is default mds for directory name belongs to. */
835 obj = lmv_grab_obj(obd, pid);
837 /* directory is splitted. look for right mds for this name. */
838 mds = raw_name2idx(obj->hashtype, obj->objcount, name, len);
839 rcid = obj->objs[mds].id;
840 mds = id_group(&rcid);
843 rc = md_change_cbdata(lmv->tgts[mds].ltd_exp, &rcid, it, data);
847 static int lmv_valid_attrs(struct obd_export *exp, struct lustre_id *id)
849 struct obd_device *obd = exp->exp_obd;
850 struct lmv_obd *lmv = &obd->u.lmv;
854 rc = lmv_check_connect(obd);
858 CDEBUG(D_OTHER, "validate "DLID4"\n", OLID4(id));
859 LASSERT(id_group(id) < lmv->desc.ld_tgt_count);
860 rc = md_valid_attrs(lmv->tgts[id_group(id)].ltd_exp, id);
864 static int lmv_close(struct obd_export *exp, struct mdc_op_data *op_data,
865 struct obd_client_handle *och,
866 struct ptlrpc_request **request)
868 struct obd_device *obd = exp->exp_obd;
869 struct lmv_obd *lmv = &obd->u.lmv;
870 int rc, i = id_group(&op_data->id1);
873 rc = lmv_check_connect(obd);
877 LASSERT(i < lmv->desc.ld_tgt_count);
878 CDEBUG(D_OTHER, "CLOSE "DLID4"\n", OLID4(&op_data->id1));
879 rc = md_close(lmv->tgts[i].ltd_exp, op_data, och, request);
883 int lmv_get_mea_and_update_object(struct obd_export *exp,
884 struct lustre_id *id)
886 struct obd_device *obd = exp->exp_obd;
887 struct lmv_obd *lmv = &obd->u.lmv;
888 struct ptlrpc_request *req = NULL;
896 mealen = MEA_SIZE_LMV(lmv);
898 valid = OBD_MD_FLEASIZE | OBD_MD_FLDIREA | OBD_MD_MEA;
900 /* time to update mea of parent id */
901 rc = md_getattr(lmv->tgts[id_group(id)].ltd_exp,
902 id, valid, NULL, NULL, 0, mealen, NULL, &req);
904 CERROR("md_getattr() failed, error %d\n", rc);
908 rc = mdc_req2lustre_md(exp, req, 0, NULL, &md);
910 CERROR("mdc_req2lustre_md() failed, error %d\n", rc);
915 GOTO(cleanup, rc = -ENODATA);
917 obj = lmv_create_obj(exp, id, md.mea);
923 obd_free_memmd(exp, (struct lov_stripe_md **)&md.mea);
928 ptlrpc_req_finished(req);
932 int lmv_create(struct obd_export *exp, struct mdc_op_data *op_data,
933 const void *data, int datalen, int mode, __u32 uid,
934 __u32 gid, __u64 rdev, struct ptlrpc_request **request)
936 struct obd_device *obd = exp->exp_obd;
937 struct lmv_obd *lmv = &obd->u.lmv;
938 struct mds_body *body;
940 int rc, mds, loop = 0;
943 rc = lmv_check_connect(obd);
947 if (!lmv->desc.ld_active_tgt_count)
950 LASSERT(++loop <= 2);
951 obj = lmv_grab_obj(obd, &op_data->id1);
953 mds = raw_name2idx(obj->hashtype, obj->objcount,
954 op_data->name, op_data->namelen);
955 op_data->id1 = obj->objs[mds].id;
959 CDEBUG(D_OTHER, "CREATE '%*s' on "DLID4"\n", op_data->namelen,
960 op_data->name, OLID4(&op_data->id1));
962 rc = md_create(lmv->tgts[id_group(&op_data->id1)].ltd_exp,
963 op_data, data, datalen, mode, uid, gid, rdev,
966 if (*request == NULL)
969 body = lustre_msg_buf((*request)->rq_repmsg, 0,
974 CDEBUG(D_OTHER, "created. "DLID4"\n", OLID4(&op_data->id1));
975 } else if (rc == -ERESTART) {
977 * directory got splitted. time to update local object and
978 * repeat the request with proper MDS.
980 rc = lmv_get_mea_and_update_object(exp, &op_data->id1);
982 ptlrpc_req_finished(*request);
989 static int lmv_done_writing(struct obd_export *exp, struct obdo *obdo)
991 struct obd_device *obd = exp->exp_obd;
992 struct lmv_obd *lmv = &obd->u.lmv;
996 rc = lmv_check_connect(obd);
1000 /* FIXME: choose right MDC here */
1001 CWARN("this method isn't implemented yet\n");
1002 rc = md_done_writing(lmv->tgts[0].ltd_exp, obdo);
1007 lmv_enqueue_slaves(struct obd_export *exp, int locktype,
1008 struct lookup_intent *it, int lockmode,
1009 struct mdc_op_data *data, struct lustre_handle *lockh,
1010 void *lmm, int lmmsize, ldlm_completion_callback cb_compl,
1011 ldlm_blocking_callback cb_blocking, void *cb_data)
1013 struct obd_device *obd = exp->exp_obd;
1014 struct lmv_obd *lmv = &obd->u.lmv;
1015 struct mea *mea = data->mea1;
1016 struct mdc_op_data *data2;
1020 OBD_ALLOC(data2, sizeof(*data2));
1024 LASSERT(mea != NULL);
1025 for (i = 0; i < mea->mea_count; i++) {
1026 memset(data2, 0, sizeof(*data2));
1027 data2->id1 = mea->mea_ids[i];
1028 mds = id_group(&data2->id1);
1030 if (lmv->tgts[mds].ltd_exp == NULL)
1033 rc = md_enqueue(lmv->tgts[mds].ltd_exp, locktype, it,
1034 lockmode, data2, lockh + i, lmm, lmmsize,
1035 cb_compl, cb_blocking, cb_data);
1037 CDEBUG(D_OTHER, "take lock on slave "DLID4" -> %d/%d\n",
1038 OLID4(&mea->mea_ids[i]), rc, LUSTRE_IT(it)->it_status);
1041 if (LUSTRE_IT(it)->it_data) {
1042 struct ptlrpc_request *req;
1043 req = (struct ptlrpc_request *) LUSTRE_IT(it)->it_data;
1044 ptlrpc_req_finished(req);
1047 if (LUSTRE_IT(it)->it_status)
1048 GOTO(cleanup, rc = LUSTRE_IT(it)->it_status);
1051 OBD_FREE(data2, sizeof(*data2));
1054 OBD_FREE(data2, sizeof(*data2));
1056 /* drop all taken locks */
1058 if (lockh[i].cookie)
1059 ldlm_lock_decref(lockh + i, lockmode);
1060 lockh[i].cookie = 0;
1066 lmv_enqueue_remote(struct obd_export *exp, int lock_type,
1067 struct lookup_intent *it, int lock_mode,
1068 struct mdc_op_data *data, struct lustre_handle *lockh,
1069 void *lmm, int lmmsize, ldlm_completion_callback cb_compl,
1070 ldlm_blocking_callback cb_blocking, void *cb_data)
1072 struct ptlrpc_request *req = LUSTRE_IT(it)->it_data;
1073 struct obd_device *obd = exp->exp_obd;
1074 struct lmv_obd *lmv = &obd->u.lmv;
1075 struct lustre_handle plock;
1076 struct mdc_op_data rdata;
1077 struct mds_body *body = NULL;
1081 body = lustre_msg_buf(req->rq_repmsg, 1, sizeof(*body));
1082 LASSERT(body != NULL);
1084 if (!(body->valid & OBD_MD_MDS))
1087 CDEBUG(D_OTHER, "ENQUEUE '%s' on "DLID4" -> "DLID4"\n",
1088 LL_IT2STR(it), OLID4(&data->id1), OLID4(&body->id1));
1090 /* we got LOOKUP lock, but we really need attrs */
1091 pmode = LUSTRE_IT(it)->it_lock_mode;
1092 LASSERT(pmode != 0);
1093 memcpy(&plock, lockh, sizeof(plock));
1094 LUSTRE_IT(it)->it_lock_mode = 0;
1095 LUSTRE_IT(it)->it_data = NULL;
1096 LASSERT((body->valid & OBD_MD_FID) != 0);
1098 memcpy(&rdata, data, sizeof(rdata));
1099 rdata.id1 = body->id1;
1103 LUSTRE_IT(it)->it_disposition &= ~DISP_ENQ_COMPLETE;
1104 ptlrpc_req_finished(req);
1106 rc = md_enqueue(lmv->tgts[id_group(&rdata.id1)].ltd_exp,
1107 lock_type, it, lock_mode, &rdata, lockh, lmm,
1108 lmmsize, cb_compl, cb_blocking, cb_data);
1109 ldlm_lock_decref(&plock, pmode);
1114 lmv_enqueue(struct obd_export *exp, int lock_type,
1115 struct lookup_intent *it, int lock_mode,
1116 struct mdc_op_data *data, struct lustre_handle *lockh,
1117 void *lmm, int lmmsize, ldlm_completion_callback cb_compl,
1118 ldlm_blocking_callback cb_blocking, void *cb_data)
1120 struct obd_device *obd = exp->exp_obd;
1121 struct lmv_obd *lmv = &obd->u.lmv;
1122 struct lmv_obj *obj;
1126 rc = lmv_check_connect(obd);
1130 if (data->mea1 && it->it_op == IT_UNLINK) {
1131 rc = lmv_enqueue_slaves(exp, lock_type, it, lock_mode,
1132 data, lockh, lmm, lmmsize,
1133 cb_compl, cb_blocking, cb_data);
1137 if (data->namelen) {
1138 obj = lmv_grab_obj(obd, &data->id1);
1140 /* directory is splitted. look for right mds for this
1142 mds = raw_name2idx(obj->hashtype, obj->objcount,
1143 (char *)data->name, data->namelen);
1144 data->id1 = obj->objs[mds].id;
1148 CDEBUG(D_OTHER, "ENQUEUE '%s' on "DLID4"\n", LL_IT2STR(it),
1151 rc = md_enqueue(lmv->tgts[id_group(&data->id1)].ltd_exp,
1152 lock_type, it, lock_mode, data, lockh, lmm,
1153 lmmsize, cb_compl, cb_blocking, cb_data);
1154 if (rc == 0 && it->it_op == IT_OPEN)
1155 rc = lmv_enqueue_remote(exp, lock_type, it, lock_mode,
1156 data, lockh, lmm, lmmsize,
1157 cb_compl, cb_blocking, cb_data);
1162 lmv_getattr_lock(struct obd_export *exp, struct lustre_id *id,
1163 char *filename, int namelen, __u64 valid,
1164 unsigned int ea_size, struct ptlrpc_request **request)
1166 int rc, mds = id_group(id), loop = 0;
1167 struct obd_device *obd = exp->exp_obd;
1168 struct lmv_obd *lmv = &obd->u.lmv;
1169 struct lustre_id rid = *id;
1170 struct mds_body *body;
1171 struct lmv_obj *obj;
1174 rc = lmv_check_connect(obd);
1178 LASSERT(++loop <= 2);
1179 obj = lmv_grab_obj(obd, id);
1181 /* directory is splitted. look for right mds for this name */
1182 mds = raw_name2idx(obj->hashtype, obj->objcount,
1183 filename, namelen - 1);
1184 rid = obj->objs[mds].id;
1188 CDEBUG(D_OTHER, "getattr_lock for %*s on "DLID4" -> "DLID4"\n",
1189 namelen, filename, OLID4(id), OLID4(&rid));
1191 rc = md_getattr_lock(lmv->tgts[id_group(&rid)].ltd_exp,
1192 &rid, filename, namelen,
1193 valid == OBD_MD_FLID ? valid : valid | OBD_MD_FID,
1197 * this could be cross-node reference. in this case all we have
1198 * right now is lustre_id triple. we'd like to find other
1201 body = lustre_msg_buf((*request)->rq_repmsg, 0, sizeof(*body));
1202 LASSERT(body != NULL);
1203 LASSERT((body->valid & OBD_MD_FID) != 0
1204 || body->valid == OBD_MD_FLID);
1206 if (body->valid & OBD_MD_MDS) {
1207 struct ptlrpc_request *req = NULL;
1210 CDEBUG(D_OTHER, "request attrs for "DLID4"\n", OLID4(&rid));
1212 rc = md_getattr_lock(lmv->tgts[id_group(&rid)].ltd_exp,
1213 &rid, NULL, 1, valid, ea_size, &req);
1214 ptlrpc_req_finished(*request);
1217 } else if (rc == -ERESTART) {
1218 /* directory got splitted. time to update local object and
1219 * repeat the request with proper MDS */
1220 rc = lmv_get_mea_and_update_object(exp, &rid);
1222 ptlrpc_req_finished(*request);
1230 * llite passes id of an target inode in data->id1 and id of directory in
1233 static int lmv_link(struct obd_export *exp, struct mdc_op_data *data,
1234 struct ptlrpc_request **request)
1236 struct obd_device *obd = exp->exp_obd;
1237 struct lmv_obd *lmv = &obd->u.lmv;
1238 struct lmv_obj *obj;
1242 rc = lmv_check_connect(obd);
1246 if (data->namelen != 0) {
1247 /* usual link request */
1248 obj = lmv_grab_obj(obd, &data->id2);
1250 rc = raw_name2idx(obj->hashtype, obj->objcount,
1251 data->name, data->namelen);
1252 data->id2 = obj->objs[rc].id;
1256 mds = id_group(&data->id2);
1258 CDEBUG(D_OTHER,"link "DLID4":%*s to "DLID4"\n",
1259 OLID4(&data->id2), data->namelen, data->name,
1262 mds = id_group(&data->id1);
1264 /* request from MDS to acquire i_links for inode by id1 */
1265 CDEBUG(D_OTHER, "inc i_nlinks for "DLID4"\n",
1269 CDEBUG(D_OTHER, "forward to MDS #%u ("DLID4")\n",
1270 mds, OLID4(&data->id1));
1271 rc = md_link(lmv->tgts[mds].ltd_exp, data, request);
1276 static int lmv_rename(struct obd_export *exp, struct mdc_op_data *data,
1277 const char *old, int oldlen, const char *new, int newlen,
1278 struct ptlrpc_request **request)
1280 struct obd_device *obd = exp->exp_obd;
1281 struct lmv_obd *lmv = &obd->u.lmv;
1282 struct lmv_obj *obj;
1286 CDEBUG(D_OTHER, "rename %*s in "DLID4" to %*s in "DLID4"\n",
1287 oldlen, old, OLID4(&data->id1), newlen, new,
1290 rc = lmv_check_connect(obd);
1296 * MDS with old dir entry is asking another MDS to create name
1300 "create %*s(%d/%d) in "DLID4" pointing "
1301 "to "DLID4"\n", newlen, new, oldlen, newlen,
1302 OLID4(&data->id2), OLID4(&data->id1));
1304 mds = id_group(&data->id2);
1307 * target directory can be splitted, sowe should forward request
1310 obj = lmv_grab_obj(obd, &data->id2);
1312 mds = raw_name2idx(obj->hashtype, obj->objcount,
1313 (char *)new, newlen);
1314 data->id2 = obj->objs[mds].id;
1315 CDEBUG(D_OTHER, "forward to MDS #%u ("DLID4")\n", mds,
1322 obj = lmv_grab_obj(obd, &data->id1);
1325 * directory is already splitted, so we have to forward request
1328 mds = raw_name2idx(obj->hashtype, obj->objcount,
1329 (char *)old, oldlen);
1330 data->id1 = obj->objs[mds].id;
1331 CDEBUG(D_OTHER, "forward to MDS #%u ("DLID4")\n", mds,
1336 obj = lmv_grab_obj(obd, &data->id2);
1339 * directory is already splitted, so we have to forward request
1342 mds = raw_name2idx(obj->hashtype, obj->objcount,
1343 (char *)new, newlen);
1345 data->id2 = obj->objs[mds].id;
1346 CDEBUG(D_OTHER, "forward to MDS #%u ("DLID4")\n", mds,
1351 mds = id_group(&data->id1);
1354 if (id_group(&data->id1) != id_group(&data->id2)) {
1355 CDEBUG(D_OTHER,"cross-node rename "DLID4"/%*s to "DLID4"/%*s\n",
1356 OLID4(&data->id1), oldlen, old, OLID4(&data->id2),
1360 rc = md_rename(lmv->tgts[mds].ltd_exp, data, old, oldlen,
1361 new, newlen, request);
1365 static int lmv_setattr(struct obd_export *exp, struct mdc_op_data *data,
1366 struct iattr *iattr, void *ea, int ealen, void *ea2,
1367 int ea2len, void *ea3, int ea3len,
1368 struct ptlrpc_request **request)
1370 struct obd_device *obd = exp->exp_obd;
1371 struct lmv_obd *lmv = &obd->u.lmv;
1372 struct ptlrpc_request *req;
1373 struct mds_body *body;
1374 struct lmv_obj *obj;
1378 rc = lmv_check_connect(obd);
1382 obj = lmv_grab_obj(obd, &data->id1);
1384 CDEBUG(D_OTHER, "SETATTR for "DLID4", valid 0x%x%s\n",
1385 OLID4(&data->id1), iattr->ia_valid, obj ? ", splitted" : "");
1388 for (i = 0; i < obj->objcount; i++) {
1389 data->id1 = obj->objs[i].id;
1391 rc = md_setattr(lmv->tgts[id_group(&data->id1)].ltd_exp,
1392 data, iattr, ea, ealen, ea2, ea2len,
1395 if (id_equal_fid(&obj->id, &obj->objs[i].id)) {
1397 * this is master object and this request should
1398 * be returned back to llite.
1402 ptlrpc_req_finished(req);
1410 LASSERT(id_group(&data->id1) < lmv->desc.ld_tgt_count);
1411 rc = md_setattr(lmv->tgts[id_group(&data->id1)].ltd_exp,
1412 data, iattr, ea, ealen, ea2, ea2len, ea3,
1415 body = lustre_msg_buf((*request)->rq_repmsg, 0,
1417 LASSERT(body != NULL);
1418 LASSERT((body->valid & OBD_MD_FID) != 0);
1419 LASSERT(id_group(&body->id1) == id_group(&data->id1));
1425 static int lmv_sync(struct obd_export *exp, struct lustre_id *id,
1426 struct ptlrpc_request **request)
1428 struct obd_device *obd = exp->exp_obd;
1429 struct lmv_obd *lmv = &obd->u.lmv;
1433 rc = lmv_check_connect(obd);
1437 rc = md_sync(lmv->tgts[id_group(id)].ltd_exp,
1442 int lmv_dirobj_blocking_ast(struct ldlm_lock *lock,
1443 struct ldlm_lock_desc *desc,
1444 void *data, int flag)
1446 struct lustre_handle lockh;
1447 struct lmv_obj *obj;
1452 case LDLM_CB_BLOCKING:
1453 ldlm_lock2handle(lock, &lockh);
1454 rc = ldlm_cli_cancel(&lockh);
1456 CDEBUG(D_INODE, "ldlm_cli_cancel: %d\n", rc);
1460 case LDLM_CB_CANCELING:
1461 /* time to drop cached attrs for dirobj */
1462 obj = lock->l_ast_data;
1464 CDEBUG(D_OTHER, "cancel %s on "LPU64"/"LPU64
1465 ", master "DLID4"\n",
1466 lock->l_resource->lr_name.name[3] == 1 ?
1467 "LOOKUP" : "UPDATE",
1468 lock->l_resource->lr_name.name[0],
1469 lock->l_resource->lr_name.name[1],
1480 static void lmv_remove_dots(struct page *page)
1482 unsigned limit = PAGE_CACHE_SIZE;
1483 char *kaddr = page_address(page);
1484 struct ext2_dir_entry_2 *p;
1485 unsigned offs, rec_len;
1487 for (offs = 0; offs <= limit - EXT2_DIR_REC_LEN(1); offs += rec_len) {
1488 p = (struct ext2_dir_entry_2 *)(kaddr + offs);
1489 rec_len = le16_to_cpu(p->rec_len);
1491 if ((p->name_len == 1 && p->name[0] == '.') ||
1492 (p->name_len == 2 && p->name[0] == '.' && p->name[1] == '.'))
1497 static int lmv_readpage(struct obd_export *exp, struct lustre_id *id,
1498 __u64 offset, struct page *page,
1499 struct ptlrpc_request **request)
1501 struct obd_device *obd = exp->exp_obd;
1502 struct lmv_obd *lmv = &obd->u.lmv;
1503 struct lustre_id rid = *id;
1504 struct lmv_obj *obj;
1508 #warning "we need well-desgined readdir() implementation"
1509 rc = lmv_check_connect(obd);
1513 LASSERT(id_group(id) < lmv->desc.ld_tgt_count);
1514 CDEBUG(D_OTHER, "READPAGE at %llu from "DLID4"\n",
1515 offset, OLID4(&rid));
1517 obj = lmv_grab_obj(obd, id);
1521 /* find dirobj containing page with requested offset. */
1522 for (i = 0; i < obj->objcount; i++) {
1523 if (offset < obj->objs[i].size)
1525 offset -= obj->objs[i].size;
1527 rid = obj->objs[i].id;
1529 lmv_unlock_obj(obj);
1532 CDEBUG(D_OTHER, "forward to "DLID4" with offset %lu\n",
1533 OLID4(&rid), (unsigned long)offset);
1535 rc = md_readpage(lmv->tgts[id_group(&rid)].ltd_exp, &rid,
1536 offset, page, request);
1538 if (rc == 0 && !id_equal_fid(&rid, id))
1539 /* this page isn't from master object. To avoid "." and ".."
1540 * duplication in directory, we have to remove them from all
1542 lmv_remove_dots(page);
1547 static int lmv_unlink_slaves(struct obd_export *exp, struct mdc_op_data *data,
1548 struct ptlrpc_request **req)
1550 struct obd_device *obd = exp->exp_obd;
1551 struct lmv_obd *lmv = &obd->u.lmv;
1552 struct mea *mea = data->mea1;
1553 struct mdc_op_data *data2;
1557 OBD_ALLOC(data2, sizeof(*data2));
1561 LASSERT(mea != NULL);
1562 for (i = 0; i < mea->mea_count; i++) {
1563 memset(data2, 0, sizeof(*data2));
1564 data2->id1 = mea->mea_ids[i];
1565 data2->create_mode = MDS_MODE_DONT_LOCK | S_IFDIR;
1567 if (lmv->tgts[id_group(&data2->id1)].ltd_exp == NULL)
1570 rc = md_unlink(lmv->tgts[id_group(&data2->id1)].ltd_exp,
1573 CDEBUG(D_OTHER, "unlink slave "DLID4" -> %d\n",
1574 OLID4(&mea->mea_ids[i]), rc);
1577 ptlrpc_req_finished(*req);
1583 OBD_FREE(data2, sizeof(*data2));
1587 static int lmv_delete_inode(struct obd_export *exp, struct lustre_id *id)
1592 if (lmv_delete_obj(exp, id)) {
1593 CDEBUG(D_OTHER, "lmv object "DLID4" is destroyed.\n",
1599 static int lmv_unlink(struct obd_export *exp, struct mdc_op_data *data,
1600 struct ptlrpc_request **request)
1602 struct obd_device *obd = exp->exp_obd;
1603 struct lmv_obd *lmv = &obd->u.lmv;
1607 rc = lmv_check_connect(obd);
1611 if (data->namelen == 0 && data->mea1 != NULL) {
1612 /* mds asks to remove slave objects */
1613 rc = lmv_unlink_slaves(exp, data, request);
1617 if (data->namelen != 0) {
1618 struct lmv_obj *obj;
1620 obj = lmv_grab_obj(obd, &data->id1);
1622 i = raw_name2idx(obj->hashtype, obj->objcount,
1623 data->name, data->namelen);
1624 data->id1 = obj->objs[i].id;
1627 CDEBUG(D_OTHER, "unlink '%*s' in "DLID4" -> %u\n",
1628 data->namelen, data->name, OLID4(&data->id1),
1631 CDEBUG(D_OTHER, "drop i_nlink on "DLID4"\n",
1634 rc = md_unlink(lmv->tgts[id_group(&data->id1)].ltd_exp,
1639 static struct obd_device *lmv_get_real_obd(struct obd_export *exp,
1640 struct lustre_id *id)
1642 struct obd_device *obd = exp->exp_obd;
1643 struct lmv_obd *lmv = &obd->u.lmv;
1647 rc = lmv_check_connect(obd);
1649 RETURN(ERR_PTR(rc));
1650 obd = lmv->tgts[id_group(id)].ltd_exp->exp_obd;
1656 static int lmv_init_ea_size(struct obd_export *exp, int easize,
1659 struct obd_device *obd = exp->exp_obd;
1660 struct lmv_obd *lmv = &obd->u.lmv;
1661 int i, rc = 0, change = 0;
1664 if (lmv->max_easize < easize) {
1665 lmv->max_easize = easize;
1668 if (lmv->max_cookiesize < cookiesize) {
1669 lmv->max_cookiesize = cookiesize;
1675 if (lmv->connected == 0)
1678 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
1679 if (lmv->tgts[i].ltd_exp == NULL) {
1680 CWARN("%s: NULL export for %d\n", obd->obd_name, i);
1684 rc = obd_init_ea_size(lmv->tgts[i].ltd_exp, easize, cookiesize);
1686 CERROR("obd_init_ea_size() failed on MDT target %d, "
1687 "error %d.\n", i, rc);
1694 static int lmv_obd_create_single(struct obd_export *exp, struct obdo *oa,
1695 void *acl, int acl_size,
1696 struct lov_stripe_md **ea,
1697 struct obd_trans_info *oti)
1699 struct obd_device *obd = exp->exp_obd;
1700 struct lmv_obd *lmv = &obd->u.lmv;
1701 struct lov_stripe_md obj_md;
1702 struct lov_stripe_md *obj_mdp = &obj_md;
1706 LASSERT(ea == NULL);
1707 LASSERT(oa->o_mds < lmv->desc.ld_tgt_count);
1709 rc = obd_create(lmv->tgts[oa->o_mds].ltd_exp, oa,
1710 acl, acl_size, &obj_mdp, oti);
1716 * to be called from MDS only. @oa should have correct store cookie and o_fid
1717 * values for "master" object, as it will be used.
1719 int lmv_obd_create(struct obd_export *exp, struct obdo *oa,
1720 void *acl, int acl_size,
1721 struct lov_stripe_md **ea, struct obd_trans_info *oti)
1723 struct obd_device *obd = exp->exp_obd;
1724 struct lmv_obd *lmv = &obd->u.lmv;
1725 struct lustre_id mid;
1730 rc = lmv_check_connect(obd);
1734 LASSERT(oa != NULL);
1737 rc = lmv_obd_create_single(exp, oa, acl, acl_size, NULL, oti);
1739 CERROR("Can't create object, rc = %d\n", rc);
1743 /* acl is only suppied when mds create single remote obj */
1744 LASSERT(acl == NULL && acl_size == 0);
1747 rc = obd_alloc_diskmd(exp, (struct lov_mds_md **)ea);
1749 CERROR("obd_alloc_diskmd() failed, error %d\n",
1760 * here we should take care about splitted dir, so store cookie and fid
1761 * for "master" object should already be allocated and passed in @oa.
1763 LASSERT(oa->o_id != 0);
1764 LASSERT(oa->o_fid != 0);
1766 /* save "master" object id */
1769 mea = (struct mea *)*ea;
1770 mea->mea_master = -1;
1771 mea->mea_magic = MEA_MAGIC_ALL_CHARS;
1773 if (!mea->mea_count || mea->mea_count > lmv->desc.ld_tgt_count)
1774 mea->mea_count = lmv->desc.ld_tgt_count;
1776 for (i = 0, c = 0; c < mea->mea_count && i < lmv->desc.ld_tgt_count; i++) {
1777 struct lov_stripe_md obj_md;
1778 struct lov_stripe_md *obj_mdp = &obj_md;
1780 if (lmv->tgts[i].ltd_exp == NULL) {
1781 /* this is "master" MDS */
1782 mea->mea_master = i;
1783 mea->mea_ids[c] = mid;
1789 * "master" MDS should always be part of stripped dir,
1792 if (mea->mea_master == -1 && c == mea->mea_count - 1)
1795 oa->o_valid = OBD_MD_FLGENER | OBD_MD_FLTYPE | OBD_MD_FLMODE |
1796 OBD_MD_FLUID | OBD_MD_FLGID | OBD_MD_FLID;
1798 rc = obd_create(lmv->tgts[c].ltd_exp, oa, NULL, 0,
1801 CERROR("obd_create() failed on MDT target %d, "
1802 "error %d\n", c, rc);
1806 CDEBUG(D_OTHER, "dirobj at mds %d: "LPU64"/%u\n",
1807 i, oa->o_id, oa->o_generation);
1811 * here, when object is created (or it is master and was passed
1812 * from caller) on desired MDS we save its fid to local mea_ids.
1817 * store cookie should be defined here for both cases (master
1818 * object and not master), because master is already created.
1822 /* fill mea by store cookie and fid */
1823 obdo2id(&mea->mea_ids[c], oa);
1826 LASSERT(c == mea->mea_count);
1828 CDEBUG(D_OTHER, "%d dirobjects created\n",
1829 (int)mea->mea_count);
1834 static int lmv_llog_init(struct obd_device *obd, struct obd_llogs *llogs,
1835 struct obd_device *tgt, int count,
1836 struct llog_catid *logid)
1838 struct llog_ctxt *ctxt;
1842 rc = obd_llog_setup(obd, llogs, LLOG_CONFIG_REPL_CTXT, tgt, 0, NULL,
1845 ctxt = llog_get_context(llogs, LLOG_CONFIG_REPL_CTXT);
1846 ctxt->loc_imp = tgt->u.cli.cl_import;
1852 static int lmv_llog_finish(struct obd_device *obd,
1853 struct obd_llogs *llogs, int count)
1858 rc = obd_llog_cleanup(llog_get_context(llogs, LLOG_CONFIG_REPL_CTXT));
1862 static int lmv_get_info(struct obd_export *exp, __u32 keylen,
1863 void *key, __u32 *vallen, void *val)
1865 struct obd_device *obd;
1866 struct lmv_obd *lmv;
1870 obd = class_exp2obd(exp);
1872 CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n",
1873 exp->exp_handle.h_cookie);
1878 if (keylen == strlen("mdsize") && !strcmp(key, "mdsize")) {
1879 __u32 *mdsize = val;
1880 *vallen = sizeof(__u32);
1881 *mdsize = sizeof(struct lustre_id) * lmv->desc.ld_tgt_count
1882 + sizeof(struct mea);
1884 } else if (keylen == strlen("mdsnum") && !strcmp(key, "mdsnum")) {
1885 struct obd_uuid *cluuid = &lmv->cluuid;
1886 struct lmv_tgt_desc *tgts;
1887 __u32 *mdsnum = val;
1890 for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count; i++, tgts++) {
1891 if (obd_uuid_equals(&tgts->uuid, cluuid)) {
1892 *vallen = sizeof(__u32);
1898 } else if (keylen == strlen("rootid") && !strcmp(key, "rootid")) {
1899 rc = lmv_check_connect(obd);
1903 /* getting rootid from first MDS. */
1904 rc = obd_get_info(lmv->tgts[0].ltd_exp, keylen, key,
1907 } else if (keylen >= strlen("lmvdesc") && !strcmp(key, "lmvdesc")) {
1908 struct lmv_desc *desc_ret = val;
1909 *desc_ret = lmv->desc;
1911 } else if (keylen >= strlen("remote_flag") && !strcmp(key, "remote_flag")) {
1912 struct lmv_tgt_desc *tgts;
1915 rc = lmv_check_connect(obd);
1919 LASSERT(*vallen == sizeof(__u32));
1920 for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count;
1923 /* all tgts should be connected when this get called. */
1924 if (!tgts || !tgts->ltd_exp) {
1925 CERROR("target not setup?\n");
1929 if (!obd_get_info(tgts->ltd_exp, keylen, key,
1934 } else if (keylen >= strlen("lovdesc") && !strcmp(key, "lovdesc")) {
1935 rc = lmv_check_connect(obd);
1939 /* forwarding this request to first MDS, it should know LOV
1941 rc = obd_get_info(lmv->tgts[0].ltd_exp, keylen, key,
1944 } else if (keylen >= strlen("getext") && !strcmp(key, "getext")) {
1945 struct lmv_tgt_desc *tgts;
1948 rc = lmv_check_connect(obd);
1952 LASSERT(*vallen == sizeof(struct fid_extent));
1953 for (i = 0, tgts = lmv->tgts; i < lmv->desc.ld_tgt_count;
1956 /* all tgts should be connected when this get called. */
1957 if (!tgts || !tgts->ltd_exp) {
1958 CERROR("target not setup?\n");
1962 rc = obd_get_info(tgts->ltd_exp, keylen, key,
1970 CDEBUG(D_IOCTL, "invalid key\n");
1974 int lmv_set_info(struct obd_export *exp, obd_count keylen,
1975 void *key, obd_count vallen, void *val)
1977 struct lmv_tgt_desc *tgt;
1978 struct obd_device *obd;
1979 struct lmv_obd *lmv;
1983 obd = class_exp2obd(exp);
1985 CDEBUG(D_IOCTL, "invalid client cookie "LPX64"\n",
1986 exp->exp_handle.h_cookie);
1991 if (keylen >= strlen("inter_mds") && strcmp(key, "inter_mds") == 0) {
1992 lmv->server_timeout = 1;
1993 lmv_set_timeouts(obd);
1997 /* maybe this could be default */
1998 if ((keylen == strlen("sec") && strcmp(key, "sec") == 0) ||
1999 (keylen == strlen("sec_flags") && strcmp(key, "sec_flags") == 0) ||
2000 (keylen == strlen("nllu") && strcmp(key, "nllu") == 0)) {
2001 struct obd_export *exp;
2004 spin_lock(&lmv->lmv_lock);
2005 for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count;
2008 /* during setup time the connections to mdc might
2009 * haven't been established.
2012 struct obd_device *tgt_obd;
2014 tgt_obd = class_find_client_obd(&tgt->uuid,
2018 CERROR("can't set info %s, "
2019 "device %s not attached?\n",
2020 (char *) key, tgt->uuid.uuid);
2024 exp = tgt_obd->obd_self_export;
2027 err = obd_set_info(exp, keylen, key, vallen, val);
2031 spin_unlock(&lmv->lmv_lock);
2035 if (keylen == 5 && strcmp(key, "audit") == 0) {
2036 struct audit_attr_msg * msg = val;
2037 int mds = id_group(&msg->id);
2039 LASSERT(mds < lmv->desc.ld_tgt_count);
2041 if (IS_AUDIT_OP(msg->attr, AUDIT_FS)) {
2042 //FS audit, send message to all mds
2043 for (i = 0; i < lmv->desc.ld_tgt_count;i++) {
2044 obd_set_info(lmv->tgts[i].ltd_exp,
2045 keylen, key, vallen, val);
2048 else if (IS_AUDIT_OP(msg->attr, AUDIT_DIR)) {
2050 //if dir is splitted, send RPC to all mds involved
2051 struct lmv_obj *obj;
2052 struct lustre_id rid;
2055 obj = lmv_grab_obj(obd, &msg->id);
2058 for (i = 0; i < obj->objcount; i++) {
2059 rid = obj->objs[i].id;
2060 mds = id_group(&rid);
2061 obd_set_info(lmv->tgts[mds].ltd_exp,
2065 lmv_unlock_obj(obj);
2069 rc = obd_set_info(lmv->tgts[mds].ltd_exp,
2070 keylen, key, vallen, val);
2074 //set audit for file
2075 rc = obd_set_info(lmv->tgts[mds].ltd_exp,
2076 keylen, key, vallen, val);
2080 if (((keylen == strlen("flush_cred") &&
2081 strcmp(key, "flush_cred") == 0)) ||
2082 ((keylen == strlen("crypto_type") &&
2083 strcmp(key, "crypto_type") == 0))) {
2086 for (i = 0, tgt = lmv->tgts; i < lmv->desc.ld_tgt_count;
2090 rc = obd_set_info(tgt->ltd_exp,
2091 keylen, key, vallen, val);
2099 if (keylen == strlen("ids") && memcmp(key, "ids", keylen) == 0) {
2100 struct lustre_id *id = (struct lustre_id *)val;
2102 rc = lmv_check_connect(obd);
2106 rc = obd_set_info(lmv->tgts[id_group(id)].ltd_exp,
2107 keylen, key, vallen, val);
2111 if (keylen == strlen("chkconnect") &&
2112 memcpy(key, "chkconnect", keylen) == 0) {
2113 rc = lmv_check_connect(obd);
2120 int lmv_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
2121 struct lov_stripe_md *lsm)
2123 struct obd_device *obd = class_exp2obd(exp);
2124 struct lmv_obd *lmv = &obd->u.lmv;
2125 struct mea *meap, *lsmp;
2129 mea_size = (sizeof(struct lustre_id) *
2130 lmv->desc.ld_tgt_count) + sizeof(struct mea);
2134 if (*lmmp && !lsm) {
2135 OBD_FREE(*lmmp, mea_size);
2140 if (*lmmp == NULL) {
2141 OBD_ALLOC(*lmmp, mea_size);
2149 lsmp = (struct mea *)lsm;
2150 meap = (struct mea *)*lmmp;
2152 if (lsmp->mea_magic != MEA_MAGIC_LAST_CHAR &&
2153 lsmp->mea_magic != MEA_MAGIC_ALL_CHARS)
2156 meap->mea_magic = cpu_to_le32(lsmp->mea_magic);
2157 meap->mea_count = cpu_to_le32(lsmp->mea_count);
2158 meap->mea_master = cpu_to_le32(lsmp->mea_master);
2160 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2161 meap->mea_ids[i] = meap->mea_ids[i];
2162 id_cpu_to_le(&meap->mea_ids[i]);
2168 int lmv_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
2169 struct lov_mds_md *lmm, int lmm_size)
2171 struct obd_device *obd = class_exp2obd(exp);
2172 struct mea **tmea = (struct mea **)lsmp;
2173 struct mea *mea = (struct mea *)lmm;
2174 struct lmv_obd *lmv = &obd->u.lmv;
2175 int mea_size, i, rc = 0;
2179 mea_size = sizeof(struct lustre_id) *
2180 lmv->desc.ld_tgt_count + sizeof(struct mea);
2185 if (*lsmp != NULL && lmm == NULL) {
2186 OBD_FREE(*tmea, mea_size);
2190 LASSERT(mea_size == lmm_size);
2192 OBD_ALLOC(*tmea, mea_size);
2199 if (mea->mea_magic == MEA_MAGIC_LAST_CHAR ||
2200 mea->mea_magic == MEA_MAGIC_ALL_CHARS)
2202 magic = le32_to_cpu(mea->mea_magic);
2204 struct mea_old *old = (struct mea_old *)lmm;
2206 mea_size = sizeof(struct lustre_id) * old->mea_count +
2207 sizeof(struct mea_old);
2209 if (old->mea_count > 256 || old->mea_master > 256 ||
2210 lmm_size < mea_size || old->mea_master > old->mea_count) {
2211 CWARN("bad MEA: count %u, master %u, size %u\n",
2212 old->mea_count, old->mea_master, mea_size);
2213 GOTO(out_free_mea, rc = -EINVAL);
2215 magic = MEA_MAGIC_LAST_CHAR;
2218 (*tmea)->mea_magic = magic;
2219 (*tmea)->mea_count = le32_to_cpu(mea->mea_count);
2220 (*tmea)->mea_master = le32_to_cpu(mea->mea_master);
2222 for (i = 0; i < (*tmea)->mea_count; i++) {
2223 (*tmea)->mea_ids[i] = mea->mea_ids[i];
2224 id_le_to_cpu(&(*tmea)->mea_ids[i]);
2229 OBD_FREE(*tmea, mea_size);
2233 int lmv_brw(int rw, struct obd_export *exp, struct obdo *oa,
2234 struct lov_stripe_md *ea, obd_count oa_bufs,
2235 struct brw_page *pgarr, struct obd_trans_info *oti)
2237 struct obd_device *obd = exp->exp_obd;
2238 struct lmv_obd *lmv = &obd->u.lmv;
2239 struct mea *mea = (struct mea *) ea;
2242 LASSERT(oa != NULL);
2243 LASSERT(ea != NULL);
2244 LASSERT(pgarr != NULL);
2245 LASSERT(oa->o_mds < lmv->desc.ld_tgt_count);
2247 oa->o_gr = id_gen(&mea->mea_ids[oa->o_mds]);
2248 oa->o_id = id_ino(&mea->mea_ids[oa->o_mds]);
2249 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP;
2251 err = obd_brw(rw, lmv->tgts[oa->o_mds].ltd_exp,
2252 oa, NULL, oa_bufs, pgarr, oti);
2256 static int lmv_cancel_unused(struct obd_export *exp,
2257 struct lov_stripe_md *lsm,
2258 int flags, void *opaque)
2260 struct obd_device *obd = exp->exp_obd;
2261 struct lmv_obd *lmv = &obd->u.lmv;
2265 LASSERT(lsm == NULL);
2267 for (i = 0; i < lmv->desc.ld_tgt_count; i++) {
2268 if (!lmv->tgts[i].ltd_exp || !lmv->tgts[i].active)
2271 err = obd_cancel_unused(lmv->tgts[i].ltd_exp,
2272 NULL, flags, opaque);
2279 struct obd_ops lmv_obd_ops = {
2280 .o_owner = THIS_MODULE,
2281 .o_attach = lmv_attach,
2282 .o_detach = lmv_detach,
2283 .o_setup = lmv_setup,
2284 .o_cleanup = lmv_cleanup,
2285 .o_connect = lmv_connect,
2286 .o_disconnect = lmv_disconnect,
2287 .o_statfs = lmv_statfs,
2288 .o_llog_init = lmv_llog_init,
2289 .o_llog_finish = lmv_llog_finish,
2290 .o_get_info = lmv_get_info,
2291 .o_set_info = lmv_set_info,
2292 .o_create = lmv_obd_create,
2293 .o_packmd = lmv_packmd,
2294 .o_unpackmd = lmv_unpackmd,
2296 .o_init_ea_size = lmv_init_ea_size,
2297 .o_notify = lmv_notify,
2298 .o_iocontrol = lmv_iocontrol,
2299 .o_cancel_unused = lmv_cancel_unused,
2302 struct md_ops lmv_md_ops = {
2303 .m_getstatus = lmv_getstatus,
2304 .m_getattr = lmv_getattr,
2305 .m_change_cbdata = lmv_change_cbdata,
2306 .m_change_cbdata_name = lmv_change_cbdata_name,
2307 .m_close = lmv_close,
2308 .m_create = lmv_create,
2309 .m_done_writing = lmv_done_writing,
2310 .m_enqueue = lmv_enqueue,
2311 .m_getattr_lock = lmv_getattr_lock,
2312 .m_intent_lock = lmv_intent_lock,
2314 .m_rename = lmv_rename,
2315 .m_setattr = lmv_setattr,
2317 .m_readpage = lmv_readpage,
2318 .m_unlink = lmv_unlink,
2319 .m_get_real_obd = lmv_get_real_obd,
2320 .m_valid_attrs = lmv_valid_attrs,
2321 .m_delete_inode = lmv_delete_inode,
2322 .m_access_check = lmv_access_check,
2325 int __init lmv_init(void)
2327 struct lprocfs_static_vars lvars;
2330 obj_cache = kmem_cache_create("lmv_objects",
2331 sizeof(struct lmv_obj),
2334 CERROR("error allocating lmv objects cache\n");
2338 lprocfs_init_vars(lmv, &lvars);
2339 rc = class_register_type(&lmv_obd_ops, &lmv_md_ops,
2341 OBD_LMV_DEVICENAME);
2343 kmem_cache_destroy(obj_cache);
2349 static void lmv_exit(void)
2351 class_unregister_type(OBD_LMV_DEVICENAME);
2353 LASSERTF(kmem_cache_destroy(obj_cache) == 0,
2354 "can't free lmv objects cache, %d object(s)"
2355 "still in use\n", atomic_read(&obj_cache_count));
2358 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
2359 MODULE_DESCRIPTION("Lustre Logical Metadata Volume OBD driver");
2360 MODULE_LICENSE("GPL");
2362 module_init(lmv_init);
2363 module_exit(lmv_exit);