1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
5 * Lustre Metadata Server (mds) handling of striped file data
7 * Copyright (C) 2001-2003 Cluster File Systems, Inc.
8 * Author: Peter Braam <braam@clusterfs.com>
10 * This file is part of Lustre, http://www.lustre.org.
12 * Lustre is free software; you can redistribute it and/or
13 * modify it under the terms of version 2 of the GNU General Public
14 * License as published by the Free Software Foundation.
16 * Lustre is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with Lustre; if not, write to the Free Software
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 # define EXPORT_SYMTAB
29 #define DEBUG_SUBSYSTEM S_MDS
31 #include <linux/module.h>
32 #include <linux/lustre_mds.h>
33 #include <linux/obd_ost.h>
34 #include <linux/lustre_idl.h>
35 #include <linux/obd_class.h>
36 #include <linux/obd_lov.h>
37 #include <linux/lustre_lib.h>
38 #include <linux/lustre_fsfilt.h>
40 #include "mds_internal.h"
42 void le_lov_desc_to_cpu (struct lov_desc *ld)
44 ld->ld_tgt_count = le32_to_cpu (ld->ld_tgt_count);
45 ld->ld_default_stripe_count = le32_to_cpu (ld->ld_default_stripe_count);
46 ld->ld_default_stripe_size = le32_to_cpu (ld->ld_default_stripe_size);
47 ld->ld_pattern = le32_to_cpu (ld->ld_pattern);
50 void cpu_to_le_lov_desc (struct lov_desc *ld)
52 ld->ld_tgt_count = cpu_to_le32 (ld->ld_tgt_count);
53 ld->ld_default_stripe_count = cpu_to_le32 (ld->ld_default_stripe_count);
54 ld->ld_default_stripe_size = cpu_to_le32 (ld->ld_default_stripe_size);
55 ld->ld_pattern = cpu_to_le32 (ld->ld_pattern);
58 void mds_dt_update_objids(struct obd_device *obd, obd_id *ids)
60 struct mds_obd *mds = &obd->u.mds;
64 spin_lock(&mds->mds_dt_lock);
65 for (i = 0; i < mds->mds_dt_desc.ld_tgt_count; i++)
66 if (ids[i] > (mds->mds_dt_objids)[i])
67 (mds->mds_dt_objids)[i] = ids[i];
68 spin_unlock(&mds->mds_dt_lock);
72 static int mds_dt_read_objids(struct obd_device *obd)
74 struct mds_obd *mds = &obd->u.mds;
77 int i, rc, size = mds->mds_dt_desc.ld_tgt_count * sizeof(*ids);
80 if (mds->mds_dt_objids != NULL)
86 mds->mds_dt_objids = ids;
88 if (mds->mds_dt_objid_filp->f_dentry->d_inode->i_size == 0)
90 rc = fsfilt_read_record(obd, mds->mds_dt_objid_filp, ids, size, &off);
92 CERROR("Error reading objids %d\n", rc);
94 mds->mds_dt_objids_valid = 1;
98 for (i = 0; i < mds->mds_dt_desc.ld_tgt_count; i++)
99 CDEBUG(D_INFO, "read last object "LPU64" for idx %d\n",
100 mds->mds_dt_objids[i], i);
105 int mds_dt_write_objids(struct obd_device *obd)
107 struct mds_obd *mds = &obd->u.mds;
109 int i, rc, size = mds->mds_dt_desc.ld_tgt_count * sizeof(obd_id);
112 for (i = 0; i < mds->mds_dt_desc.ld_tgt_count; i++)
113 CDEBUG(D_INFO, "writing last object "LPU64" for idx %d\n",
114 mds->mds_dt_objids[i], i);
116 rc = fsfilt_write_record(obd, mds->mds_dt_objid_filp,
117 mds->mds_dt_objids, size, &off, 0);
121 int mds_dt_clearorphans(struct mds_obd *mds, struct obd_uuid *ost_uuid)
124 struct obdo *oa = NULL;
125 struct obd_trans_info oti = {0};
126 struct lov_stripe_md *empty_ea = NULL;
129 LASSERT(mds->mds_dt_objids != NULL);
132 * this create will in fact either create or destroy: If the OST is
133 * missing objects below this ID, they will be created. If it finds
134 * objects above this ID, they will be removed.
140 memset(oa, 0, sizeof(*oa));
141 oa->o_gr = FILTER_GROUP_FIRST_MDS + mds->mds_num;
142 oa->o_valid = OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
143 oa->o_flags = OBD_FL_DELORPHAN;
145 if (ost_uuid != NULL) {
146 memcpy(&oa->o_inline, ost_uuid, sizeof(*ost_uuid));
147 oa->o_valid |= OBD_MD_FLINLINE;
149 rc = obd_create(mds->mds_dt_exp, oa, NULL, 0, &empty_ea, &oti);
154 /* update the LOV-OSC knowledge of the last used object id's */
155 int mds_dt_set_nextid(struct obd_device *obd)
157 struct mds_obd *mds = &obd->u.mds;
161 LASSERT(!obd->obd_recovering);
163 LASSERT(mds->mds_dt_objids != NULL);
165 rc = obd_set_info(mds->mds_dt_exp, strlen("next_id"), "next_id",
166 mds->mds_dt_desc.ld_tgt_count, mds->mds_dt_objids);
170 /* tell the LOV-OSC by how much to pre-create */
171 int mds_dt_set_growth(struct mds_obd *mds, int count)
176 rc = obd_set_info(mds->mds_dt_exp, strlen("growth_count"),
177 "growth_count", sizeof(count), &count);
182 static int mds_dt_update_desc(struct obd_device *obd, struct obd_export *lov)
184 struct mds_obd *mds = &obd->u.mds;
185 __u32 valsize = sizeof(mds->mds_dt_desc);
186 int old_count, rc = 0, i;
189 old_count = mds->mds_dt_desc.ld_tgt_count;
191 rc = obd_get_info(lov, strlen("lovdesc") + 1, "lovdesc",
192 &valsize, &mds->mds_dt_desc);
196 /* The size of the LOV target table may have increased. */
197 if (old_count >= mds->mds_dt_desc.ld_tgt_count) {
201 size = mds->mds_dt_desc.ld_tgt_count * sizeof(*ids);
202 OBD_ALLOC(ids, size);
206 memset(ids, 0, size);
208 if (mds->mds_dt_objids != NULL) {
209 int oldsize = old_count * sizeof(*ids);
211 memcpy(ids, mds->mds_dt_objids, oldsize);
212 OBD_FREE(mds->mds_dt_objids, oldsize);
214 mds->mds_dt_objids = ids;
217 i = lov_mds_md_size(mds->mds_dt_desc.ld_tgt_count);
218 if (i > mds->mds_max_mdsize)
219 mds->mds_max_mdsize = i;
220 mds->mds_max_cookiesize = mds->mds_dt_desc.ld_tgt_count *
221 sizeof(struct llog_cookie);
222 mds->mds_has_dt_desc = 1;
226 int mds_dt_connect(struct obd_device *obd, char *lov_name)
228 struct mds_obd *mds = &obd->u.mds;
229 struct lustre_handle conn = {0,};
233 if (IS_ERR(mds->mds_dt_obd))
234 RETURN(PTR_ERR(mds->mds_dt_obd));
239 spin_lock_init(&mds->mds_dt_lock);
240 mds->mds_dt_obd = class_name2obd(lov_name);
241 if (!mds->mds_dt_obd) {
242 CERROR("MDS cannot locate LOV %s\n", lov_name);
243 mds->mds_dt_obd = ERR_PTR(-ENOTCONN);
247 if (mds->mds_ost_sec) {
248 rc = obd_set_info(mds->mds_dt_obd->obd_self_export,
249 strlen("sec"), "sec",
250 strlen(mds->mds_ost_sec), mds->mds_ost_sec);
252 mds->mds_dt_obd = ERR_PTR(rc);
257 CDEBUG(D_HA, "obd: %s osc: %s lov_name: %s\n",
258 obd->obd_name, mds->mds_dt_obd->obd_name, lov_name);
260 rc = obd_connect(&conn, mds->mds_dt_obd, &obd->obd_uuid, NULL,
261 mds->mds_num + FILTER_GROUP_FIRST_MDS);
263 CERROR("MDS cannot connect to LOV %s (%d)\n", lov_name, rc);
264 mds->mds_dt_obd = ERR_PTR(rc);
267 mds->mds_dt_exp = class_conn2export(&conn);
269 rc = obd_register_observer(mds->mds_dt_obd, obd);
271 CERROR("MDS cannot register as observer of LOV %s (%d)\n",
273 GOTO(err_discon, rc);
276 rc = mds_dt_update_desc(obd, mds->mds_dt_exp);
280 rc = mds_dt_read_objids(obd);
282 CERROR("cannot read %s: rc = %d\n", "lov_objids", rc);
286 rc = obd_llog_cat_initialize(obd, &obd->obd_llogs,
287 mds->mds_dt_desc.ld_tgt_count, CATLIST);
289 CERROR("failed to initialize catalog %d\n", rc);
293 /* If we're mounting this code for the first time on an existing FS,
294 * we need to populate the objids array from the real OST values */
295 if (!mds->mds_dt_objids_valid) {
296 __u32 size = sizeof(obd_id) * mds->mds_dt_desc.ld_tgt_count;
297 rc = obd_get_info(mds->mds_dt_exp, strlen("last_id"),
298 "last_id", &size, mds->mds_dt_objids);
300 for (i = 0; i < mds->mds_dt_desc.ld_tgt_count; i++)
301 CWARN("got last object "LPU64" from OST %d\n",
302 mds->mds_dt_objids[i], i);
303 mds->mds_dt_objids_valid = 1;
304 rc = mds_dt_write_objids(obd);
306 CERROR("got last objids from OSTs, but error "
307 "writing objids file: %d\n", rc);
311 /* I want to see a callback happen when the OBD moves to a
312 * "For General Use" state, and that's when we'll call
313 * set_nextid(). The class driver can help us here, because
314 * it can use the obd_recovering flag to determine when the
315 * the OBD is full available. */
316 if (!obd->obd_recovering) {
317 CDEBUG(D_OTHER, "call mds_postrecov_common()\n");
318 rc = mds_postrecov_common(obd);
325 obd_register_observer(mds->mds_dt_obd, NULL);
327 obd_disconnect(mds->mds_dt_exp, 0);
328 mds->mds_dt_exp = NULL;
329 mds->mds_dt_obd = ERR_PTR(rc);
333 int mds_dt_disconnect(struct obd_device *obd, int flags)
335 struct mds_obd *mds = &obd->u.mds;
339 if (!IS_ERR(mds->mds_dt_obd) && mds->mds_dt_exp != NULL) {
340 /* cleanup all llogging subsystems */
341 rc = obd_llog_finish(obd, &obd->obd_llogs,
342 mds->mds_dt_desc.ld_tgt_count);
344 CERROR("failed to cleanup llogging subsystems\n");
346 obd_register_observer(mds->mds_dt_obd, NULL);
348 rc = obd_disconnect(mds->mds_dt_exp, flags);
349 /* if obd_disconnect fails (probably because the
350 * export was disconnected by class_disconnect_exports)
351 * then we just need to drop our ref. */
353 class_export_put(mds->mds_dt_exp);
354 mds->mds_dt_exp = NULL;
355 mds->mds_dt_obd = NULL;
361 int mds_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
362 void *karg, void *uarg)
364 static struct obd_uuid cfg_uuid = { .uuid = "config_uuid" };
365 struct obd_device *obd = exp->exp_obd;
366 struct mds_obd *mds = &obd->u.mds;
367 struct obd_ioctl_data *data = karg;
368 struct lvfs_run_ctxt saved;
372 CDEBUG(D_INFO, "ioctl cmd %x\n", cmd);
374 case OBD_IOC_RECORD: {
375 char *name = data->ioc_inlbuf1;
376 if (mds->mds_cfg_llh)
379 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
380 rc = llog_open(llog_get_context(&obd->obd_llogs,
381 LLOG_CONFIG_ORIG_CTXT),
382 &mds->mds_cfg_llh, NULL, name,
385 llog_init_handle(mds->mds_cfg_llh, LLOG_F_IS_PLAIN,
388 mds->mds_cfg_llh = NULL;
389 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
394 case OBD_IOC_ENDRECORD: {
395 if (!mds->mds_cfg_llh)
398 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
399 rc = llog_close(mds->mds_cfg_llh);
400 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
402 mds->mds_cfg_llh = NULL;
406 case OBD_IOC_CLEAR_LOG: {
407 char *name = data->ioc_inlbuf1;
408 if (mds->mds_cfg_llh)
411 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
412 rc = llog_open(llog_get_context(&obd->obd_llogs,
413 LLOG_CONFIG_ORIG_CTXT),
414 &mds->mds_cfg_llh, NULL, name,
417 llog_init_handle(mds->mds_cfg_llh, LLOG_F_IS_PLAIN,
420 rc = llog_destroy(mds->mds_cfg_llh);
421 llog_free_handle(mds->mds_cfg_llh);
423 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
425 mds->mds_cfg_llh = NULL;
429 case OBD_IOC_DORECORD: {
431 struct llog_rec_hdr rec;
432 if (!mds->mds_cfg_llh)
435 /* XXX - this probably should be a parameter to this ioctl.
436 * For now, just use llh_max_transno for expediency. */
437 rec.lrh_len = llog_data_len(data->ioc_plen1);
439 if (data->ioc_type == LUSTRE_CFG_TYPE) {
440 rec.lrh_type = OBD_CFG_REC;
441 } else if (data->ioc_type == PORTALS_CFG_TYPE) {
442 rec.lrh_type = PTL_CFG_REC;
444 CERROR("unknown cfg record type:%d \n", data->ioc_type);
448 OBD_ALLOC(cfg_buf, data->ioc_plen1);
451 rc = copy_from_user(cfg_buf, data->ioc_pbuf1, data->ioc_plen1);
453 OBD_FREE(cfg_buf, data->ioc_plen1);
457 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
458 rc = llog_write_rec(mds->mds_cfg_llh, &rec, NULL, 0,
460 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
462 OBD_FREE(cfg_buf, data->ioc_plen1);
465 case OBD_IOC_PARSE: {
466 struct llog_ctxt *ctxt =
467 llog_get_context(&obd->obd_llogs, LLOG_CONFIG_ORIG_CTXT);
468 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
469 rc = class_config_process_llog(ctxt, data->ioc_inlbuf1, NULL);
470 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
476 case OBD_IOC_DUMP_LOG: {
477 struct llog_ctxt *ctxt =
478 llog_get_context(&obd->obd_llogs, LLOG_CONFIG_ORIG_CTXT);
479 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
480 rc = class_config_dump_llog(ctxt, data->ioc_inlbuf1, NULL);
481 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
485 case OBD_IOC_SET_READONLY: {
487 struct inode *inode = obd->u.mds.mds_sb->s_root->d_inode;
488 BDEVNAME_DECLARE_STORAGE(tmp);
489 CERROR("setting device %s read-only\n",
490 ll_bdevname(obd->u.mds.mds_sb, tmp));
492 handle = fsfilt_start(obd, inode, FSFILT_OP_MKNOD, NULL);
494 rc = fsfilt_commit(obd, obd->u.mds.mds_sb, inode, handle, 1);
496 ll_set_rdonly(ll_sbdev(obd->u.mds.mds_sb));
500 case OBD_IOC_CATLOGLIST: {
501 int count = mds->mds_dt_desc.ld_tgt_count;
502 rc = llog_catalog_list(obd, count, data);
506 case OBD_IOC_LLOG_CHECK:
507 case OBD_IOC_LLOG_CANCEL:
508 case OBD_IOC_LLOG_REMOVE: {
509 struct llog_ctxt *ctxt =
510 llog_get_context(&obd->obd_llogs, LLOG_CONFIG_ORIG_CTXT);
514 obd_llog_finish(obd, &obd->obd_llogs,
515 mds->mds_dt_desc.ld_tgt_count);
516 push_ctxt(&saved, ctxt->loc_lvfs_ctxt, NULL);
517 rc = llog_ioctl(ctxt, cmd, data);
518 pop_ctxt(&saved, ctxt->loc_lvfs_ctxt, NULL);
519 obd_llog_cat_initialize(obd, &obd->obd_llogs,
520 mds->mds_dt_desc.ld_tgt_count,
522 group = FILTER_GROUP_FIRST_MDS + mds->mds_num;
523 valsize = sizeof(group);
524 rc2 = obd_set_info(mds->mds_dt_exp, strlen("mds_conn"),
525 "mds_conn", valsize, &group);
530 case OBD_IOC_LLOG_INFO:
531 case OBD_IOC_LLOG_PRINT: {
532 struct llog_ctxt *ctxt =
533 llog_get_context(&obd->obd_llogs, LLOG_CONFIG_ORIG_CTXT);
535 push_ctxt(&saved, ctxt->loc_lvfs_ctxt, NULL);
536 rc = llog_ioctl(ctxt, cmd, data);
537 pop_ctxt(&saved, ctxt->loc_lvfs_ctxt, NULL);
542 case OBD_IOC_ABORT_RECOVERY:
543 target_stop_recovery_thread(obd);
545 case OBD_IOC_ROOT_SQUASH: {
546 __u32 *p = (__u32 *) data->ioc_inlbuf1;
548 if (data->ioc_inllen1 !=
549 (sizeof(__u32) * 4 + sizeof(ptl_nid_t)))
552 if (*p == 0) { /* get */
554 *p++ = mds->mds_squash_uid;
555 *p++ = mds->mds_squash_gid;
556 *((ptl_nid_t*) p) = mds->mds_nosquash_nid;
559 mds->mds_squash_uid = *p++;
560 mds->mds_squash_gid = *p++;
561 mds->mds_nosquash_nid = *((ptl_nid_t*) p);
562 CWARN("MDS: squash root to %d:%d, except nid 0x%llx\n",
563 mds->mds_squash_uid, mds->mds_squash_gid,
564 mds->mds_nosquash_nid);
569 CDEBUG(D_INFO, "unknown command %x\n", cmd);
576 struct mds_dt_sync_info {
577 struct obd_device *mlsi_obd; /* the mds to sync */
578 struct obd_device *mlsi_watched; /* new lov target */
579 int mlsi_index; /* index into mds_dt_objids */
582 int mds_dt_synchronize(void *data)
584 struct mds_dt_sync_info *mlsi = data;
585 struct llog_ctxt *ctxt;
586 struct obd_device *obd;
587 struct obd_device *watched;
589 struct obd_uuid *uuid;
598 char name[32] = "CATLIST";
604 SIGNAL_MASK_LOCK(current, flags);
605 sigfillset(¤t->blocked);
607 SIGNAL_MASK_UNLOCK(current, flags);
611 obd = mlsi->mlsi_obd;
612 watched = mlsi->mlsi_watched;
613 index = mlsi->mlsi_index;
615 LASSERT(obd != NULL);
616 LASSERT(watched != NULL);
618 OBD_FREE(mlsi, sizeof(*mlsi));
621 down(&mds->mds_orphan_recovery_sem);
623 uuid = &watched->u.cli.cl_import->imp_target_uuid;
625 group = FILTER_GROUP_FIRST_MDS + mds->mds_num;
626 rc = obd_set_info(watched->obd_self_export, strlen("mds_conn"),
627 "mds_conn", sizeof(group), &group);
631 old_count = mds->mds_dt_desc.ld_tgt_count;
633 rc = mds_dt_update_desc(obd, mds->mds_dt_exp);
637 count = mds->mds_dt_desc.ld_tgt_count;
638 LASSERT(count >= old_count);
640 vallen = sizeof(vals[1]);
641 rc = obd_get_info(watched->obd_self_export, strlen("last_id"),
642 "last_id", &vallen, &vals[1]);
647 rc = mds_dt_set_info(obd->obd_self_export, strlen("next_id"),
652 obd_llog_finish(obd, &obd->obd_llogs, old_count);
653 obd_llog_cat_initialize(obd, &obd->obd_llogs, count, name);
655 ctxt = llog_get_context(&obd->obd_llogs, LLOG_UNLINK_ORIG_CTXT);
656 LASSERT(ctxt != NULL);
658 rc = llog_connect(ctxt, count, NULL, NULL, uuid);
660 CERROR("%s: failed at llog_origin_connect: %d\n",
665 CWARN("MDS %s: %s now active, resetting orphans\n",
666 obd->obd_name, uuid->uuid);
668 rc = mds_dt_clearorphans(&obd->u.mds, uuid);
670 CERROR("%s: failed at mds_dt_clearorphans(): %d\n",
678 up(&mds->mds_orphan_recovery_sem);
682 int mds_dt_start_synchronize(struct obd_device *obd,
683 struct obd_device *watched,
686 struct mds_dt_sync_info *mlsi;
691 OBD_ALLOC(mlsi, sizeof(*mlsi));
695 mlsi->mlsi_obd = obd;
696 mlsi->mlsi_watched = watched;
697 mlsi->mlsi_index = (int)data;
699 rc = kernel_thread(mds_dt_synchronize, mlsi, CLONE_VM | CLONE_FILES);
701 CERROR("%s: error starting mds_dt_synchronize(): %d\n",
704 CDEBUG(D_HA, "%s: mds_dt_synchronize() thread: %d\n",
712 int mds_notify(struct obd_device *obd, struct obd_device *watched,
713 int active, void *data)
721 if (!strcmp(watched->obd_type->typ_name, LUSTRE_MDC_NAME))
724 if (strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME)) {
725 CERROR("unexpected notification of %s %s!\n",
726 watched->obd_type->typ_name, watched->obd_name);
730 if (obd->obd_recovering) {
731 struct obd_uuid *uuid;
732 uuid = &watched->u.cli.cl_import->imp_target_uuid;
734 CWARN("MDS %s: in recovery, not resetting orphans on %s\n",
735 obd->obd_name, uuid->uuid);
737 rc = mds_dt_start_synchronize(obd, watched, data);
742 int mds_dt_set_info(struct obd_export *exp, obd_count keylen,
743 void *key, obd_count vallen, void *val)
745 struct obd_device *obd = class_exp2obd(exp);
746 struct mds_obd *mds = &obd->u.mds;
749 #define KEY_IS(str) \
750 (keylen == strlen(str) && memcmp(key, str, keylen) == 0)
752 if (KEY_IS("next_id")) {
753 obd_id *id = (obd_id *)val;
756 /* XXX - this really should be vallen != (2 * sizeof(*id)) *
757 * Just following the precedent set by lov_set_info. */
762 if ((idx != *id) || (idx >= mds->mds_dt_desc.ld_tgt_count))
765 CDEBUG(D_CONFIG, "idx: %d id: %llu\n", idx, *(id + 1));
767 mds->mds_dt_objids[idx] = *++id;
768 CDEBUG(D_CONFIG, "objid: %d: %lld\n", idx, *id);
769 /* XXX - should we be writing this out here ? */
770 RETURN(mds_dt_write_objids(obd));
776 int mds_dt_update_config(struct obd_device *obd, int clean)
778 struct mds_obd *mds = &obd->u.mds;
779 struct lvfs_run_ctxt saved;
780 struct config_llog_instance cfg;
781 struct llog_ctxt *ctxt;
782 char *profile = mds->mds_profile, *name;
783 int rc, version, namelen;
789 cfg.cfg_instance = NULL;
790 cfg.cfg_uuid = mds->mds_dt_uuid;
792 namelen = strlen(profile) + 20; /* -clean-######### */
793 OBD_ALLOC(name, namelen);
798 version = mds->mds_config_version - 1;
799 sprintf(name, "%s-clean-%d", profile, version);
801 version = mds->mds_config_version + 1;
802 sprintf(name, "%s-%d", profile, version);
805 CWARN("Applying configuration log %s\n", name);
807 push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
808 ctxt = llog_get_context(&obd->obd_llogs, LLOG_CONFIG_ORIG_CTXT);
809 rc = class_config_process_llog(ctxt, name, &cfg);
810 pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
812 mds->mds_config_version = version;
813 CWARN("Finished applying configuration log %s: %d\n", name, rc);
815 OBD_FREE(name, namelen);
819 /* Convert the on-disk LOV EA structre.
820 * We always try to convert from an old LOV EA format to the common in-memory
821 * (lsm) format (obd_unpackmd() understands the old on-disk (lmm) format) and
822 * then convert back to the new on-disk format and save it back to disk
823 * (obd_packmd() only ever saves to the new on-disk format) so we don't have
824 * to convert it each time this inode is accessed.
826 * This function is a bit interesting in the error handling. We can safely
827 * ship the old lmm to the client in case of failure, since it uses the same
828 * obd_unpackmd() code and can do the conversion if the MDS fails for some
829 * reason. We will not delete the old lmm data until we have written the
830 * new format lmm data in fsfilt_set_md(). */
831 int mds_convert_lov_ea(struct obd_device *obd, struct inode *inode,
832 struct lov_mds_md *lmm, int lmm_size)
834 struct lov_stripe_md *lsm = NULL;
839 if (le32_to_cpu(lmm->lmm_magic) == LOV_MAGIC)
842 CDEBUG(D_INODE, "converting LOV EA on %lu/%u from V0 to V1\n",
843 inode->i_ino, inode->i_generation);
844 rc = obd_unpackmd(obd->u.mds.mds_dt_exp, &lsm, lmm, lmm_size);
848 rc = obd_packmd(obd->u.mds.mds_dt_exp, &lmm, lsm);
853 handle = fsfilt_start(obd, inode, FSFILT_OP_SETATTR, NULL);
854 if (IS_ERR(handle)) {
855 rc = PTR_ERR(handle);
859 rc = fsfilt_set_md(obd, inode, handle, lmm, lmm_size, EA_LOV);
860 err = fsfilt_commit(obd, obd->u.mds.mds_sb, inode, handle, 0);
862 rc = err ? err : lmm_size;
865 obd_free_memmd(obd->u.mds.mds_dt_exp, &lsm);
870 /* Must be called with i_sem held */
871 int mds_revalidate_lov_ea(struct obd_device *obd, struct inode *inode,
872 struct lustre_msg *msg, int offset)
874 struct mds_obd *mds = &obd->u.mds;
875 struct obd_export *dt_exp = mds->mds_dt_exp;
876 struct lov_mds_md *lmm= NULL;
877 struct lov_stripe_md *lsm = NULL;
878 struct obdo *oa = NULL;
879 struct obd_trans_info oti = {0};
881 int lmm_size = 0, lsm_size = 0, err, rc;
885 LASSERT(down_trylock(&inode->i_sem) != 0);
887 /* XXX - add way to know if EA is already up to date & return
888 * without doing anything. Easy to do since we get notified of
891 lmm = lustre_msg_buf(msg, offset, 0);
893 CDEBUG(D_INFO, "no space reserved for inode %lu MD\n",
897 lmm_size = msg->buflens[offset];
899 rc = obd_unpackmd(dt_exp, &lsm, lmm, lmm_size);
905 LASSERT(lsm->lsm_magic == LOV_MAGIC);
909 GOTO(out_lsm, rc = -ENOMEM);
910 oa->o_mode = S_IFREG | 0600;
911 oa->o_id = inode->i_ino;
912 oa->o_generation = inode->i_generation;
913 oa->o_uid = 0; /* must have 0 uid / gid on OST */
915 oa->o_gr = FILTER_GROUP_FIRST_MDS + mds->mds_num;
917 oa->o_valid = OBD_MD_FLID | OBD_MD_FLGENER | OBD_MD_FLTYPE |
918 OBD_MD_FLMODE | OBD_MD_FLUID | OBD_MD_FLGID |
920 valid = OBD_MD_FLTYPE | OBD_MD_FLATIME | OBD_MD_FLMTIME |
922 obdo_from_inode(oa, inode, valid);
924 rc = obd_revalidate_md(dt_exp, oa, lsm, &oti);
928 CERROR("Error validating LOV EA on %lu/%u: %d\n",
929 inode->i_ino, inode->i_generation, rc);
933 rc = obd_packmd(dt_exp, &lmm, lsm);
938 handle = fsfilt_start(obd, inode, FSFILT_OP_SETATTR, NULL);
939 if (IS_ERR(handle)) {
940 rc = PTR_ERR(handle);
944 rc = fsfilt_set_md(obd, inode, handle, lmm, lmm_size, EA_LOV);
945 err = fsfilt_commit(obd, inode->i_sb, inode, handle, 0);
953 obd_free_memmd(dt_exp, &lsm);