1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
6 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 only,
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License version 2 for more details (a copy is included
16 * in the LICENSE file that accompanied this code).
18 * You should have received a copy of the GNU General Public License
19 * version 2 along with this program; If not, see
20 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
22 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
23 * CA 95054 USA or visit www.sun.com if you need additional information or
29 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
30 * Use is subject to license terms.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/mds/mds_lov.c
38 * Lustre Metadata Server (mds) handling of striped file data
40 * Author: Peter Braam <braam@clusterfs.com>
43 #define DEBUG_SUBSYSTEM S_MDS
45 #include <linux/module.h>
46 #include <lustre_mds.h>
47 #include <lustre/lustre_idl.h>
48 #include <obd_class.h>
50 #include <lustre_lib.h>
51 #include <lustre_fsfilt.h>
52 #include <obd_cksum.h>
54 #include "mds_internal.h"
56 static void mds_lov_dump_objids(const char *label, struct obd_device *obd)
58 struct mds_obd *mds = &obd->u.mds;
61 CDEBUG(D_INFO, "dump from %s\n", label);
62 if (mds->mds_lov_page_dirty == NULL) {
63 CERROR("NULL bitmap!\n");
67 for(i = 0; i < mds->mds_lov_page_dirty->size / BITS_PER_LONG + 1; i++)
68 CDEBUG(D_INFO, "%u - %lx\n", i,
69 mds->mds_lov_page_dirty->data[i]);
71 if (mds->mds_lov_page_array == NULL) {
72 CERROR("not init page array!\n");
76 for(i = 0;i < MDS_LOV_OBJID_PAGES_COUNT; i++) {
77 obd_id *data = mds->mds_lov_page_array[i];
82 for(j=0; j < OBJID_PER_PAGE(); j++) {
85 CDEBUG(D_INFO,"objid page %u idx %u - "LPU64" \n",
93 int mds_lov_init_objids(struct obd_device *obd)
95 struct mds_obd *mds = &obd->u.mds;
96 int size = MDS_LOV_OBJID_PAGES_COUNT*sizeof(void *);
101 CLASSERT(((MDS_LOV_ALLOC_SIZE % sizeof(obd_id)) == 0));
103 mds->mds_lov_page_dirty =
104 CFS_ALLOCATE_BITMAP(MDS_LOV_OBJID_PAGES_COUNT);
105 if (mds->mds_lov_page_dirty == NULL)
109 OBD_ALLOC(mds->mds_lov_page_array, size);
110 if (mds->mds_lov_page_array == NULL)
111 GOTO(err_free_bitmap, rc = -ENOMEM);
113 /* open and test the lov objd file */
114 file = filp_open(LOV_OBJID, O_RDWR | O_CREAT, 0644);
117 CERROR("cannot open/create %s file: rc = %d\n", LOV_OBJID, rc);
118 GOTO(err_free, rc = PTR_ERR(file));
120 if (!S_ISREG(file->f_dentry->d_inode->i_mode)) {
121 CERROR("%s is not a regular file!: mode = %o\n", LOV_OBJID,
122 file->f_dentry->d_inode->i_mode);
123 GOTO(err_open, rc = -ENOENT);
125 mds->mds_lov_objid_filp = file;
129 if (filp_close((struct file *)file, 0))
130 CERROR("can't close %s after error\n", LOV_OBJID);
132 OBD_FREE(mds->mds_lov_page_array, size);
134 CFS_FREE_BITMAP(mds->mds_lov_page_dirty);
139 void mds_lov_destroy_objids(struct obd_device *obd)
141 struct mds_obd *mds = &obd->u.mds;
145 if (mds->mds_lov_page_array != NULL) {
146 for(i=0;i<MDS_LOV_OBJID_PAGES_COUNT;i++) {
147 obd_id *data = mds->mds_lov_page_array[i];
149 OBD_FREE(data, MDS_LOV_ALLOC_SIZE);
151 OBD_FREE(mds->mds_lov_page_array,
152 MDS_LOV_OBJID_PAGES_COUNT*sizeof(void *));
155 if (mds->mds_lov_objid_filp) {
156 rc = filp_close((struct file *)mds->mds_lov_objid_filp, NULL);
157 mds->mds_lov_objid_filp = NULL;
159 CERROR("%s file won't close, rc=%d\n", LOV_OBJID, rc);
162 CFS_FREE_BITMAP(mds->mds_lov_page_dirty);
167 * currently exist two ways for know about ost count and max ost index.
168 * first - after ost is connected to mds and sync process finished
169 * second - get from lmm in recovery process, in case when mds not have configs,
170 * and ost isn't registered in mgs.
172 * \param mds pointer to mds structure
173 * \param index maxium ost index
175 * \retval -ENOMEM is not hame memory for new page
176 * \retval 0 is update passed
178 static int mds_lov_update_max_ost(struct mds_obd *mds, obd_id index)
180 __u32 page = index / OBJID_PER_PAGE();
181 __u32 off = index % OBJID_PER_PAGE();
182 obd_id *data = mds->mds_lov_page_array[page];
185 OBD_ALLOC(data, MDS_LOV_ALLOC_SIZE);
189 mds->mds_lov_page_array[page] = data;
192 if (index > mds->mds_lov_objid_max_index) {
193 mds->mds_lov_objid_lastpage = page;
194 mds->mds_lov_objid_lastidx = off;
195 mds->mds_lov_objid_max_index = index;
198 /* workaround - New target not in objids file; increase mdsize */
199 /* ld_tgt_count is used as the max index everywhere, despite its name. */
200 if (data[off] == 0) {
204 mds->mds_lov_objid_count++;
205 stripes = min_t(__u32, LOV_MAX_STRIPE_COUNT,
206 mds->mds_lov_objid_count);
208 mds->mds_max_mdsize = lov_mds_md_size(stripes, LOV_MAGIC_V3);
209 mds->mds_max_cookiesize = stripes * sizeof(struct llog_cookie);
211 CDEBUG(D_CONFIG, "updated max_mdsize/max_cookiesize for %d"
212 " stripes: %d/%d\n", stripes, mds->mds_max_mdsize,
213 mds->mds_max_cookiesize);
220 int mds_lov_prepare_objids(struct obd_device *obd, struct lov_mds_md *lmm)
222 struct lov_ost_data_v1 *data;
227 /* if we create file without objects - lmm is NULL */
231 switch (le32_to_cpu(lmm->lmm_magic)) {
233 count = le32_to_cpu(((struct lov_mds_md_v1*)lmm)->lmm_stripe_count);
234 data = &(((struct lov_mds_md_v1*)lmm)->lmm_objects[0]);
237 count = le32_to_cpu(((struct lov_mds_md_v3*)lmm)->lmm_stripe_count);
238 data = &(((struct lov_mds_md_v3*)lmm)->lmm_objects[0]);
241 CERROR("Unknow lmm type %X!\n", le32_to_cpu(lmm->lmm_magic));
246 cfs_mutex_down(&obd->obd_dev_sem);
247 for (j = 0; j < count; j++) {
248 __u32 i = le32_to_cpu(data[j].l_ost_idx);
249 if (mds_lov_update_max_ost(&obd->u.mds, i)) {
254 cfs_mutex_up(&obd->obd_dev_sem);
258 EXPORT_SYMBOL(mds_lov_prepare_objids);
261 * write llog orphan record about lost ost object,
262 * Special lsm is allocated with single stripe, caller should deallocated it
265 static int mds_log_lost_precreated(struct obd_device *obd,
266 struct lov_stripe_md **lsmp, int *stripes,
267 obd_id id, obd_count count, int idx)
269 struct lov_stripe_md *lsm = *lsmp;
274 rc = obd_alloc_memmd(obd->u.mds.mds_osc_exp, &lsm);
277 /* need only one stripe, save old value */
278 *stripes = lsm->lsm_stripe_count;
279 lsm->lsm_stripe_count = 1;
283 lsm->lsm_oinfo[0]->loi_id = id;
284 lsm->lsm_oinfo[0]->loi_seq = mdt_to_obd_objseq(obd->u.mds.mds_id);
285 lsm->lsm_oinfo[0]->loi_ost_idx = idx;
287 rc = mds_log_op_orphan(obd, lsm, count);
291 void mds_lov_update_objids(struct obd_device *obd, struct lov_mds_md *lmm)
293 struct mds_obd *mds = &obd->u.mds;
295 struct lov_ost_data_v1 *obj;
296 struct lov_stripe_md *lsm = NULL;
301 /* if we create file without objects - lmm is NULL */
305 switch (le32_to_cpu(lmm->lmm_magic)) {
307 count = le32_to_cpu(((struct lov_mds_md_v1*)lmm)->lmm_stripe_count);
308 obj = ((struct lov_mds_md_v1*)lmm)->lmm_objects;
311 count = le32_to_cpu(((struct lov_mds_md_v3*)lmm)->lmm_stripe_count);
312 obj = ((struct lov_mds_md_v3*)lmm)->lmm_objects;
315 CERROR("Unknow lmm type %X !\n",
316 le32_to_cpu(lmm->lmm_magic));
320 for (j = 0; j < count; j++) {
321 __u32 i = le32_to_cpu(obj[j].l_ost_idx);
322 obd_id id = le64_to_cpu(obj[j].l_object_id);
323 __u32 page = i / OBJID_PER_PAGE();
324 __u32 idx = i % OBJID_PER_PAGE();
327 data = mds->mds_lov_page_array[page];
329 CDEBUG(D_INODE,"update last object for ost %u"
330 " - new "LPU64" old "LPU64"\n", i, id, data[idx]);
331 if (id > data[idx]) {
332 int lost = id - data[idx] - 1;
333 /* we might have lost precreated objects due to VBR */
334 if (lost > 0 && obd->obd_recovering) {
335 CDEBUG(D_HA, "Gap in objids is %u\n", lost);
336 if (!obd->obd_version_recov)
337 CERROR("Unexpected gap in objids\n");
338 /* lsm is allocated if NULL */
339 mds_log_lost_precreated(obd, &lsm, &stripes,
340 data[idx]+1, lost, i);
343 cfs_bitmap_set(mds->mds_lov_page_dirty, page);
347 /* restore stripes number */
348 lsm->lsm_stripe_count = stripes;
349 obd_free_memmd(mds->mds_osc_exp, &lsm);
354 EXPORT_SYMBOL(mds_lov_update_objids);
356 static int mds_lov_update_from_read(struct mds_obd *mds, obd_id *data,
362 for (i = 0; i < count; i++) {
366 mds->mds_lov_objid_count++;
369 stripes = min_t(__u32, LOV_MAX_STRIPE_COUNT,
370 mds->mds_lov_objid_count);
372 mds->mds_max_mdsize = lov_mds_md_size(stripes, LOV_MAGIC_V3);
373 mds->mds_max_cookiesize = stripes * sizeof(struct llog_cookie);
375 CDEBUG(D_CONFIG, "updated max_mdsize/max_cookiesize for %d stripes: "
376 "%d/%d\n", stripes, mds->mds_max_mdsize,
377 mds->mds_max_cookiesize);
383 static int mds_lov_read_objids(struct obd_device *obd)
385 struct mds_obd *mds = &obd->u.mds;
387 int i, rc = 0, count = 0, page = 0;
391 /* Read everything in the file, even if our current lov desc
392 has fewer targets. Old targets not in the lov descriptor
393 during mds setup may still have valid objids. */
394 size = i_size_read(mds->mds_lov_objid_filp->f_dentry->d_inode);
398 page = (size + MDS_LOV_ALLOC_SIZE - 1) / MDS_LOV_ALLOC_SIZE;
399 CDEBUG(D_INFO, "file size %lu pages %d\n", size, page);
400 for (i = 0; i < page; i++) {
402 loff_t off_old = off;
404 LASSERT(mds->mds_lov_page_array[i] == NULL);
405 OBD_ALLOC(mds->mds_lov_page_array[i], MDS_LOV_ALLOC_SIZE);
406 if (mds->mds_lov_page_array[i] == NULL)
407 GOTO(out, rc = -ENOMEM);
409 data = mds->mds_lov_page_array[i];
411 rc = fsfilt_read_record(obd, mds->mds_lov_objid_filp, data,
412 MDS_LOV_ALLOC_SIZE, &off);
414 CERROR("Error reading objids %d\n", rc);
417 if (off == off_old) /* hole is read */
418 off += MDS_LOV_ALLOC_SIZE;
420 count = (off - off_old) / sizeof(obd_id);
421 if (mds_lov_update_from_read(mds, data, count)) {
422 CERROR("Can't update mds data\n");
423 GOTO(out, rc = -EIO);
426 mds->mds_lov_objid_lastpage = page - 1;
427 mds->mds_lov_objid_lastidx = count - 1;
429 CDEBUG(D_INFO, "Read %u - %u %u objid\n", mds->mds_lov_objid_count,
430 mds->mds_lov_objid_lastpage, mds->mds_lov_objid_lastidx);
432 mds_lov_dump_objids("read",obd);
437 int mds_lov_write_objids(struct obd_device *obd)
439 struct mds_obd *mds = &obd->u.mds;
443 if (cfs_bitmap_check_empty(mds->mds_lov_page_dirty))
446 mds_lov_dump_objids("write", obd);
448 cfs_foreach_bit(mds->mds_lov_page_dirty, i) {
449 obd_id *data = mds->mds_lov_page_array[i];
450 unsigned int size = MDS_LOV_ALLOC_SIZE;
451 loff_t off = i * size;
453 LASSERT(data != NULL);
455 if (!cfs_bitmap_test_and_clear(mds->mds_lov_page_dirty, i))
458 /* check for particaly filled last page */
459 if (i == mds->mds_lov_objid_lastpage)
460 size = (mds->mds_lov_objid_lastidx+1) * sizeof(obd_id);
462 CDEBUG(D_INFO, "write %lld - %u\n", off, size);
463 rc = fsfilt_write_record(obd, mds->mds_lov_objid_filp, data,
466 cfs_bitmap_set(mds->mds_lov_page_dirty, i);
475 EXPORT_SYMBOL(mds_lov_write_objids);
477 static int mds_lov_get_objid(struct obd_device * obd,
480 struct mds_obd *mds = &obd->u.mds;
487 page = idx / OBJID_PER_PAGE();
488 off = idx % OBJID_PER_PAGE();
489 data = mds->mds_lov_page_array[page];
491 /* We never read this lastid; ask the osc */
492 struct obd_id_info lastid;
493 __u32 size = sizeof(lastid);
496 lastid.data = &data[off];
497 rc = obd_get_info(mds->mds_osc_exp, sizeof(KEY_LAST_ID),
498 KEY_LAST_ID, &size, &lastid, NULL);
502 /* workaround for clean filter */
506 cfs_bitmap_set(mds->mds_lov_page_dirty, page);
508 CDEBUG(D_INFO, "idx "LPU64" - %p - %d/%d - "LPU64"\n",
509 idx, data, page, off, data[off]);
514 int mds_lov_clear_orphans(struct mds_obd *mds, struct obd_uuid *ost_uuid)
517 struct obdo oa = { 0 };
518 struct obd_trans_info oti = {0};
519 struct lov_stripe_md *empty_ea = NULL;
522 LASSERT(mds->mds_lov_page_array != NULL);
524 /* This create will in fact either create or destroy: If the OST is
525 * missing objects below this ID, they will be created. If it finds
526 * objects above this ID, they will be removed. */
527 memset(&oa, 0, sizeof(oa));
528 oa.o_flags = OBD_FL_DELORPHAN;
529 oa.o_seq = mdt_to_obd_objseq(mds->mds_id);
530 oa.o_valid = OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
531 if (ost_uuid != NULL)
532 oti.oti_ost_uuid = ost_uuid;
534 rc = obd_create(mds->mds_osc_exp, &oa, &empty_ea, &oti);
540 static int mds_lov_set_one_nextid(struct obd_device *obd, __u32 idx, obd_id *id)
542 struct mds_obd *mds = &obd->u.mds;
544 struct obd_id_info info;
547 LASSERT(!obd->obd_recovering);
551 rc = obd_set_info_async(mds->mds_osc_exp, sizeof(KEY_NEXT_ID),
552 KEY_NEXT_ID, sizeof(info), &info, NULL);
554 CERROR ("%s: mds_lov_set_nextid failed (%d)\n",
560 /* Update the lov desc for a new size lov. */
561 static int mds_lov_update_desc(struct obd_device *obd, int idx,
562 struct obd_uuid *uuid, enum obd_notify_event ev)
564 struct mds_obd *mds = &obd->u.mds;
566 __u32 valsize = sizeof(mds->mds_lov_desc);
570 OBD_ALLOC(ld, sizeof(*ld));
574 rc = obd_get_info(mds->mds_osc_exp, sizeof(KEY_LOVDESC), KEY_LOVDESC,
579 /* Don't change the mds_lov_desc until the objids size matches the
581 mds->mds_lov_desc = *ld;
582 CDEBUG(D_CONFIG, "updated lov_desc, tgt_count: %d - idx %d / uuid %s\n",
583 mds->mds_lov_desc.ld_tgt_count, idx, uuid->uuid);
585 cfs_mutex_down(&obd->obd_dev_sem);
586 rc = mds_lov_update_max_ost(mds, idx);
587 cfs_mutex_up(&obd->obd_dev_sem);
591 /* If we added a target we have to reconnect the llogs */
592 /* We only _need_ to do this at first add (idx), or the first time
593 after recovery. However, it should now be safe to call anytime. */
594 rc = obd_llog_init(obd, &obd->obd_olg, obd, &idx);
598 /*XXX this notifies the MDD until lov handling use old mds code */
599 if (obd->obd_upcall.onu_owner) {
600 LASSERT(obd->obd_upcall.onu_upcall != NULL);
601 rc = obd->obd_upcall.onu_upcall(obd, NULL, ev,
602 obd->obd_upcall.onu_owner,
603 &mds->mds_obt.obt_mount_count);
606 OBD_FREE(ld, sizeof(*ld));
610 /* Inform MDS about new/updated target */
611 static int mds_lov_update_mds(struct obd_device *obd,
612 struct obd_device *watched,
613 __u32 idx, enum obd_notify_event ev)
615 struct mds_obd *mds = &obd->u.mds;
623 /* Don't let anyone else mess with mds_lov_objids now */
624 rc = mds_lov_update_desc(obd, idx, &watched->u.cli.cl_target_uuid, ev);
628 CDEBUG(D_CONFIG, "idx=%d, recov=%d/%d, cnt=%d\n",
629 idx, obd->obd_recovering, obd->obd_async_recov,
630 mds->mds_lov_desc.ld_tgt_count);
632 /* idx is set as data from lov_notify. */
633 if (obd->obd_recovering)
636 if (idx >= mds->mds_lov_desc.ld_tgt_count) {
637 CERROR("index %d > count %d!\n", idx,
638 mds->mds_lov_desc.ld_tgt_count);
639 GOTO(out, rc = -EINVAL);
642 rc = mds_lov_get_objid(obd, idx);
646 page = idx / OBJID_PER_PAGE();
647 off = idx % OBJID_PER_PAGE();
648 data = mds->mds_lov_page_array[page];
650 /* We have read this lastid from disk; tell the osc.
651 Don't call this during recovery. */
652 rc = mds_lov_set_one_nextid(obd, idx, &data[off]);
654 CERROR("Failed to set next id, idx=%d rc=%d\n", idx,rc);
655 /* Don't abort the rest of the sync */
658 CDEBUG(D_CONFIG, "last object "LPU64" from OST %d rc=%d\n",
665 /* update the LOV-OSC knowledge of the last used object id's */
666 int mds_lov_connect(struct obd_device *obd, char * lov_name)
668 struct mds_obd *mds = &obd->u.mds;
669 struct obd_connect_data *data;
673 if (IS_ERR(mds->mds_osc_obd))
674 RETURN(PTR_ERR(mds->mds_osc_obd));
676 if (mds->mds_osc_obd)
679 mds->mds_osc_obd = class_name2obd(lov_name);
680 if (!mds->mds_osc_obd) {
681 CERROR("MDS cannot locate LOV %s\n", lov_name);
682 mds->mds_osc_obd = ERR_PTR(-ENOTCONN);
686 cfs_mutex_down(&obd->obd_dev_sem);
687 rc = mds_lov_read_objids(obd);
688 cfs_mutex_up(&obd->obd_dev_sem);
690 CERROR("cannot read %s: rc = %d\n", "lov_objids", rc);
694 rc = obd_register_observer(mds->mds_osc_obd, obd);
696 CERROR("MDS cannot register as observer of LOV %s (%d)\n",
701 /* try init too early */
702 rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL);
706 mds->mds_osc_obd->u.lov.lov_sp_me = LUSTRE_SP_MDT;
708 OBD_ALLOC(data, sizeof(*data));
710 GOTO(err_exit, rc = -ENOMEM);
712 data->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_INDEX |
713 OBD_CONNECT_REQPORTAL | OBD_CONNECT_QUOTA64 |
714 OBD_CONNECT_OSS_CAPA | OBD_CONNECT_FID |
715 OBD_CONNECT_BRW_SIZE | OBD_CONNECT_CKSUM |
716 OBD_CONNECT_CHANGE_QS | OBD_CONNECT_AT |
717 OBD_CONNECT_MDS | OBD_CONNECT_SKIP_ORPHAN |
718 OBD_CONNECT_SOM | OBD_CONNECT_FULL20;
719 #ifdef HAVE_LRU_RESIZE_SUPPORT
720 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
722 data->ocd_version = LUSTRE_VERSION_CODE;
723 data->ocd_group = mdt_to_obd_objseq(mds->mds_id);
724 /* send max bytes per rpc */
725 data->ocd_brw_size = PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT;
726 /* send the list of supported checksum types */
727 data->ocd_cksum_types = OBD_CKSUM_ALL;
728 /* NB: lov_connect() needs to fill in .ocd_index for each OST */
729 rc = obd_connect(NULL, &mds->mds_osc_exp, mds->mds_osc_obd, &obd->obd_uuid, data, NULL);
730 OBD_FREE(data, sizeof(*data));
732 CERROR("MDS cannot connect to LOV %s (%d)\n", lov_name, rc);
733 mds->mds_osc_obd = ERR_PTR(rc);
737 /* I want to see a callback happen when the OBD moves to a
738 * "For General Use" state, and that's when we'll call
739 * set_nextid(). The class driver can help us here, because
740 * it can use the obd_recovering flag to determine when the
741 * the OBD is full available. */
742 /* MDD device will care about that
743 if (!obd->obd_recovering)
744 rc = mds_postrecov(obd);
749 mds->mds_osc_exp = NULL;
750 mds->mds_osc_obd = ERR_PTR(rc);
754 int mds_lov_disconnect(struct obd_device *obd)
756 struct mds_obd *mds = &obd->u.mds;
760 if (!IS_ERR(mds->mds_osc_obd) && mds->mds_osc_exp != NULL) {
761 obd_register_observer(mds->mds_osc_obd, NULL);
763 /* The actual disconnect of the mds_lov will be called from
764 * class_disconnect_exports from mds_lov_clean. So we have to
765 * ensure that class_cleanup doesn't fail due to the extra ref
766 * we're holding now. The mechanism to do that already exists -
767 * the obd_force flag. We'll drop the final ref to the
768 * mds_osc_exp in mds_cleanup. */
769 mds->mds_osc_obd->obd_force = 1;
775 struct mds_lov_sync_info {
776 struct obd_device *mlsi_obd; /* the lov device to sync */
777 struct obd_device *mlsi_watched; /* target osc */
778 __u32 mlsi_index; /* index of target */
779 enum obd_notify_event mlsi_ev; /* event type */
782 static int mds_propagate_capa_keys(struct mds_obd *mds, struct obd_uuid *uuid)
784 struct mds_capa_info info = { .uuid = uuid };
785 struct lustre_capa_key *key;
790 if (!mds->mds_capa_keys)
793 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_SYNC_CAPA_SL, 5);
794 for (i = 0; i < 2; i++) {
795 key = &mds->mds_capa_keys[i];
796 DEBUG_CAPA_KEY(D_SEC, key, "propagate");
799 rc = obd_set_info_async(mds->mds_osc_exp, sizeof(KEY_CAPA_KEY),
800 KEY_CAPA_KEY, sizeof(info), &info, NULL);
802 DEBUG_CAPA_KEY(D_ERROR, key,
803 "propagate failed (rc = %d) for", rc);
811 /* We only sync one osc at a time, so that we don't have to hold
812 any kind of lock on the whole mds_lov_desc, which may change
813 (grow) as a result of mds_lov_add_ost. This also avoids any
814 kind of mismatch between the lov_desc and the mds_lov_desc,
815 which are not in lock-step during lov_add_obd */
816 static int __mds_lov_synchronize(void *data)
818 struct mds_lov_sync_info *mlsi = data;
819 struct obd_device *obd = mlsi->mlsi_obd;
820 struct obd_device *watched = mlsi->mlsi_watched;
821 struct mds_obd *mds = &obd->u.mds;
822 struct obd_uuid *uuid;
823 __u32 idx = mlsi->mlsi_index;
824 enum obd_notify_event ev = mlsi->mlsi_ev;
825 struct mds_group_info mgi;
826 struct llog_ctxt *ctxt;
834 uuid = &watched->u.cli.cl_target_uuid;
837 cfs_down_read(&mds->mds_notify_lock);
838 if (obd->obd_stopping || obd->obd_fail)
839 GOTO(out, rc = -ENODEV);
841 OBD_RACE(OBD_FAIL_MDS_LOV_SYNC_RACE);
842 rc = mds_lov_update_mds(obd, watched, idx, ev);
844 CERROR("%s failed at update_mds: %d\n", obd_uuid2str(uuid), rc);
847 mgi.group = mdt_to_obd_objseq(mds->mds_id);
850 rc = obd_set_info_async(mds->mds_osc_exp, sizeof(KEY_MDS_CONN),
851 KEY_MDS_CONN, sizeof(mgi), &mgi, NULL);
854 /* propagate capability keys */
855 rc = mds_propagate_capa_keys(mds, uuid);
859 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
861 GOTO(out, rc = -ENODEV);
863 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_LLOG_SYNC_TIMEOUT, 60);
864 rc = llog_connect(ctxt, NULL, NULL, uuid);
867 CERROR("%s failed at llog_origin_connect: %d\n",
868 obd_uuid2str(uuid), rc);
872 LCONSOLE_INFO("MDS %s: %s now active, resetting orphans\n",
873 obd->obd_name, obd_uuid2str(uuid));
874 rc = mds_lov_clear_orphans(mds, uuid);
876 CERROR("%s failed at mds_lov_clear_orphans: %d\n",
877 obd_uuid2str(uuid), rc);
881 #ifdef HAVE_QUOTA_SUPPORT
882 if (obd->obd_upcall.onu_owner) {
884 * This is a hack for mds_notify->mdd_notify. When the mds obd
885 * in mdd is removed, This hack should be removed.
887 LASSERT(obd->obd_upcall.onu_upcall != NULL);
888 rc = obd->obd_upcall.onu_upcall(obd, NULL, OBD_NOTIFY_QUOTA,
889 obd->obd_upcall.onu_owner,NULL);
894 cfs_up_read(&mds->mds_notify_lock);
896 /* Deactivate it for safety */
897 CERROR("%s sync failed %d, deactivating\n", obd_uuid2str(uuid),
899 if (!obd->obd_stopping && mds->mds_osc_obd &&
900 !mds->mds_osc_obd->obd_stopping && !watched->obd_stopping)
901 obd_notify(mds->mds_osc_obd, watched,
902 OBD_NOTIFY_INACTIVE, NULL);
905 class_decref(obd, "mds_lov_synchronize", obd);
909 int mds_lov_synchronize(void *data)
911 struct mds_lov_sync_info *mlsi = data;
914 snprintf(name, sizeof(name), "ll_sync_%02u", mlsi->mlsi_index);
915 cfs_daemonize_ctxt(name);
917 RETURN(__mds_lov_synchronize(data));
920 int mds_lov_start_synchronize(struct obd_device *obd,
921 struct obd_device *watched,
922 void *data, enum obd_notify_event ev)
924 struct mds_lov_sync_info *mlsi;
926 struct obd_uuid *uuid;
930 uuid = &watched->u.cli.cl_target_uuid;
932 OBD_ALLOC(mlsi, sizeof(*mlsi));
937 mlsi->mlsi_obd = obd;
938 mlsi->mlsi_watched = watched;
939 mlsi->mlsi_index = *(__u32 *)data;
942 /* Although class_export_get(obd->obd_self_export) would lock
943 the MDS in place, since it's only a self-export
944 it doesn't lock the LOV in place. The LOV can be disconnected
945 during MDS precleanup, leaving nothing for __mds_lov_synchronize.
946 Simply taking an export ref on the LOV doesn't help, because it's
947 still disconnected. Taking an obd reference insures that we don't
948 disconnect the LOV. This of course means a cleanup won't
949 finish for as long as the sync is blocking. */
950 class_incref(obd, "mds_lov_synchronize", obd);
952 if (ev != OBD_NOTIFY_SYNC) {
953 /* Synchronize in the background */
954 rc = cfs_kernel_thread(mds_lov_synchronize, mlsi,
955 CLONE_VM | CLONE_FILES);
957 CERROR("%s: error starting mds_lov_synchronize: %d\n",
959 class_decref(obd, "mds_lov_synchronize", obd);
961 CDEBUG(D_HA, "%s: mds_lov_synchronize idx=%d "
962 "thread=%d\n", obd->obd_name,
963 mlsi->mlsi_index, rc);
967 rc = __mds_lov_synchronize((void *)mlsi);
973 int mds_notify(struct obd_device *obd, struct obd_device *watched,
974 enum obd_notify_event ev, void *data)
979 CDEBUG(D_CONFIG, "notify %s ev=%d\n", watched->obd_name, ev);
982 /* We only handle these: */
983 case OBD_NOTIFY_ACTIVE:
984 /* lov want one or more _active_ targets for work */
985 /* activate event should be pass lov idx as argument */
986 case OBD_NOTIFY_SYNC:
987 case OBD_NOTIFY_SYNC_NONBLOCK:
988 /* sync event should be pass lov idx as argument */
994 if (strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME) != 0) {
995 CERROR("unexpected notification of %s %s!\n",
996 watched->obd_type->typ_name, watched->obd_name);
1000 if (obd->obd_recovering) {
1001 CWARN("MDS %s: in recovery, not resetting orphans on %s\n",
1003 obd_uuid2str(&watched->u.cli.cl_target_uuid));
1004 /* We still have to fix the lov descriptor for ost's added
1005 after the mdt in the config log. They didn't make it into
1007 rc = mds_lov_update_desc(obd, *(__u32 *)data,
1008 &watched->u.cli.cl_target_uuid, ev);
1010 rc = mds_lov_start_synchronize(obd, watched, data, ev);