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_lov_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_lov_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;
481 struct obd_export *lov_exp = mds->mds_lov_exp;
489 page = idx / OBJID_PER_PAGE();
490 off = idx % OBJID_PER_PAGE();
491 data = mds->mds_lov_page_array[page];
494 /* We never read this lastid; ask the osc */
495 struct obd_id_info lastid;
497 size = sizeof(lastid);
499 lastid.data = &data[off];
500 rc = obd_get_info(lov_exp, sizeof(KEY_LAST_ID), KEY_LAST_ID,
501 &size, &lastid, NULL);
505 /* workaround for clean filter */
509 cfs_bitmap_set(mds->mds_lov_page_dirty, page);
511 CDEBUG(D_INFO, "idx "LPU64" - %p - %d/%d - "LPU64"\n",
512 idx, data, page, off, data[off]);
517 int mds_lov_clear_orphans(struct mds_obd *mds, struct obd_uuid *ost_uuid)
520 struct obdo oa = { 0 };
521 struct obd_trans_info oti = {0};
522 struct lov_stripe_md *empty_ea = NULL;
525 LASSERT(mds->mds_lov_page_array != NULL);
527 /* This create will in fact either create or destroy: If the OST is
528 * missing objects below this ID, they will be created. If it finds
529 * objects above this ID, they will be removed. */
530 memset(&oa, 0, sizeof(oa));
531 oa.o_flags = OBD_FL_DELORPHAN;
532 oa.o_seq = mdt_to_obd_objseq(mds->mds_id);
533 oa.o_valid = OBD_MD_FLFLAGS | OBD_MD_FLGROUP;
534 if (ost_uuid != NULL)
535 oti.oti_ost_uuid = ost_uuid;
537 rc = obd_create(mds->mds_lov_exp, &oa, &empty_ea, &oti);
543 static int mds_lov_set_one_nextid(struct obd_device *obd, __u32 idx, obd_id *id)
545 struct mds_obd *mds = &obd->u.mds;
547 struct obd_id_info info;
550 LASSERT(!obd->obd_recovering);
554 rc = obd_set_info_async(mds->mds_lov_exp, sizeof(KEY_NEXT_ID),
555 KEY_NEXT_ID, sizeof(info), &info, NULL);
557 CERROR ("%s: mds_lov_set_nextid failed (%d)\n",
563 /* Update the lov desc for a new size lov. */
564 static int mds_lov_update_desc(struct obd_device *obd, int idx,
565 struct obd_uuid *uuid, enum obd_notify_event ev)
567 struct mds_obd *mds = &obd->u.mds;
569 __u32 valsize = sizeof(mds->mds_lov_desc);
573 OBD_ALLOC(ld, sizeof(*ld));
577 rc = obd_get_info(mds->mds_lov_exp, sizeof(KEY_LOVDESC), KEY_LOVDESC,
582 /* Don't change the mds_lov_desc until the objids size matches the
584 mds->mds_lov_desc = *ld;
585 CDEBUG(D_CONFIG, "updated lov_desc, tgt_count: %d - idx %d / uuid %s\n",
586 mds->mds_lov_desc.ld_tgt_count, idx, uuid->uuid);
588 cfs_mutex_down(&obd->obd_dev_sem);
589 rc = mds_lov_update_max_ost(mds, idx);
590 cfs_mutex_up(&obd->obd_dev_sem);
594 /* If we added a target we have to reconnect the llogs */
595 /* We only _need_ to do this at first add (idx), or the first time
596 after recovery. However, it should now be safe to call anytime. */
597 rc = obd_llog_init(obd, &obd->obd_olg, obd, &idx);
601 /*XXX this notifies the MDD until lov handling use old mds code */
602 if (obd->obd_upcall.onu_owner) {
603 LASSERT(obd->obd_upcall.onu_upcall != NULL);
604 rc = obd->obd_upcall.onu_upcall(obd, NULL, ev,
605 obd->obd_upcall.onu_owner,
606 &mds->mds_obt.obt_mount_count);
609 OBD_FREE(ld, sizeof(*ld));
613 /* Inform MDS about new/updated target */
614 static int mds_lov_update_mds(struct obd_device *obd,
615 struct obd_device *watched,
616 __u32 idx, enum obd_notify_event ev)
618 struct mds_obd *mds = &obd->u.mds;
626 /* Don't let anyone else mess with mds_lov_objids now */
627 rc = mds_lov_update_desc(obd, idx, &watched->u.cli.cl_target_uuid, ev);
631 CDEBUG(D_CONFIG, "idx=%d, recov=%d/%d, cnt=%d\n",
632 idx, obd->obd_recovering, obd->obd_async_recov,
633 mds->mds_lov_desc.ld_tgt_count);
635 /* idx is set as data from lov_notify. */
636 if (obd->obd_recovering)
639 if (idx >= mds->mds_lov_desc.ld_tgt_count) {
640 CERROR("index %d > count %d!\n", idx,
641 mds->mds_lov_desc.ld_tgt_count);
642 GOTO(out, rc = -EINVAL);
645 rc = mds_lov_get_objid(obd, idx);
649 page = idx / OBJID_PER_PAGE();
650 off = idx % OBJID_PER_PAGE();
651 data = mds->mds_lov_page_array[page];
653 /* We have read this lastid from disk; tell the osc.
654 Don't call this during recovery. */
655 rc = mds_lov_set_one_nextid(obd, idx, &data[off]);
657 CERROR("Failed to set next id, idx=%d rc=%d\n", idx,rc);
658 /* Don't abort the rest of the sync */
661 CDEBUG(D_CONFIG, "last object "LPU64" from OST %d rc=%d\n",
668 /* update the LOV-OSC knowledge of the last used object id's */
669 int mds_lov_connect(struct obd_device *obd, char * lov_name)
671 struct mds_obd *mds = &obd->u.mds;
672 struct obd_connect_data *data;
676 if (IS_ERR(mds->mds_lov_obd))
677 RETURN(PTR_ERR(mds->mds_lov_obd));
679 if (mds->mds_lov_obd)
682 mds->mds_lov_obd = class_name2obd(lov_name);
683 if (!mds->mds_lov_obd) {
684 CERROR("MDS cannot locate LOV %s\n", lov_name);
685 mds->mds_lov_obd = ERR_PTR(-ENOTCONN);
689 cfs_mutex_down(&obd->obd_dev_sem);
690 rc = mds_lov_read_objids(obd);
691 cfs_mutex_up(&obd->obd_dev_sem);
693 CERROR("cannot read %s: rc = %d\n", "lov_objids", rc);
697 rc = obd_register_observer(mds->mds_lov_obd, obd);
699 CERROR("MDS cannot register as observer of LOV %s (%d)\n",
704 /* try init too early */
705 rc = obd_llog_init(obd, &obd->obd_olg, obd, NULL);
709 mds->mds_lov_obd->u.lov.lov_sp_me = LUSTRE_SP_MDT;
711 OBD_ALLOC(data, sizeof(*data));
713 GOTO(err_exit, rc = -ENOMEM);
715 data->ocd_connect_flags = OBD_CONNECT_VERSION | OBD_CONNECT_INDEX |
716 OBD_CONNECT_REQPORTAL | OBD_CONNECT_QUOTA64 |
717 OBD_CONNECT_OSS_CAPA | OBD_CONNECT_FID |
718 OBD_CONNECT_BRW_SIZE | OBD_CONNECT_CKSUM |
719 OBD_CONNECT_CHANGE_QS | OBD_CONNECT_AT |
720 OBD_CONNECT_MDS | OBD_CONNECT_SKIP_ORPHAN |
721 OBD_CONNECT_SOM | OBD_CONNECT_FULL20;
722 #ifdef HAVE_LRU_RESIZE_SUPPORT
723 data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
725 data->ocd_version = LUSTRE_VERSION_CODE;
726 data->ocd_group = mdt_to_obd_objseq(mds->mds_id);
727 /* send max bytes per rpc */
728 data->ocd_brw_size = PTLRPC_MAX_BRW_PAGES << CFS_PAGE_SHIFT;
729 /* send the list of supported checksum types */
730 data->ocd_cksum_types = OBD_CKSUM_ALL;
731 /* NB: lov_connect() needs to fill in .ocd_index for each OST */
732 rc = obd_connect(NULL, &mds->mds_lov_exp, mds->mds_lov_obd, &obd->obd_uuid, data, NULL);
733 OBD_FREE(data, sizeof(*data));
735 CERROR("MDS cannot connect to LOV %s (%d)\n", lov_name, rc);
736 mds->mds_lov_obd = ERR_PTR(rc);
740 /* I want to see a callback happen when the OBD moves to a
741 * "For General Use" state, and that's when we'll call
742 * set_nextid(). The class driver can help us here, because
743 * it can use the obd_recovering flag to determine when the
744 * the OBD is full available. */
745 /* MDD device will care about that
746 if (!obd->obd_recovering)
747 rc = mds_postrecov(obd);
752 mds->mds_lov_exp = NULL;
753 mds->mds_lov_obd = ERR_PTR(rc);
757 int mds_lov_disconnect(struct obd_device *obd)
759 struct mds_obd *mds = &obd->u.mds;
763 if (!IS_ERR(mds->mds_lov_obd) && mds->mds_lov_exp != NULL) {
764 obd_register_observer(mds->mds_lov_obd, NULL);
766 /* The actual disconnect of the mds_lov will be called from
767 * class_disconnect_exports from mds_lov_clean. So we have to
768 * ensure that class_cleanup doesn't fail due to the extra ref
769 * we're holding now. The mechanism to do that already exists -
770 * the obd_force flag. We'll drop the final ref to the
771 * mds_lov_exp in mds_cleanup. */
772 mds->mds_lov_obd->obd_force = 1;
778 struct mds_lov_sync_info {
779 struct obd_device *mlsi_obd; /* the lov device to sync */
780 struct obd_device *mlsi_watched; /* target osc */
781 __u32 mlsi_index; /* index of target */
782 enum obd_notify_event mlsi_ev; /* event type */
785 static int mds_propagate_capa_keys(struct mds_obd *mds, struct obd_uuid *uuid)
787 struct mds_capa_info info = { .uuid = uuid };
788 struct lustre_capa_key *key;
793 if (!mds->mds_capa_keys)
796 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_SYNC_CAPA_SL, 5);
797 for (i = 0; i < 2; i++) {
798 key = &mds->mds_capa_keys[i];
799 DEBUG_CAPA_KEY(D_SEC, key, "propagate");
802 rc = obd_set_info_async(mds->mds_lov_exp, sizeof(KEY_CAPA_KEY),
803 KEY_CAPA_KEY, sizeof(info), &info, NULL);
805 DEBUG_CAPA_KEY(D_ERROR, key,
806 "propagate failed (rc = %d) for", rc);
814 /* We only sync one osc at a time, so that we don't have to hold
815 any kind of lock on the whole mds_lov_desc, which may change
816 (grow) as a result of mds_lov_add_ost. This also avoids any
817 kind of mismatch between the lov_desc and the mds_lov_desc,
818 which are not in lock-step during lov_add_obd */
819 static int __mds_lov_synchronize(void *data)
821 struct mds_lov_sync_info *mlsi = data;
822 struct obd_device *obd = mlsi->mlsi_obd;
823 struct obd_device *watched = mlsi->mlsi_watched;
824 struct mds_obd *mds = &obd->u.mds;
825 struct obd_uuid *uuid;
826 __u32 idx = mlsi->mlsi_index;
827 enum obd_notify_event ev = mlsi->mlsi_ev;
828 struct mds_group_info mgi;
829 struct llog_ctxt *ctxt;
837 uuid = &watched->u.cli.cl_target_uuid;
840 cfs_down_read(&mds->mds_notify_lock);
841 if (obd->obd_stopping || obd->obd_fail)
842 GOTO(out, rc = -ENODEV);
844 OBD_RACE(OBD_FAIL_MDS_LOV_SYNC_RACE);
845 rc = mds_lov_update_mds(obd, watched, idx, ev);
847 CERROR("%s failed at update_mds: %d\n", obd_uuid2str(uuid), rc);
850 mgi.group = mdt_to_obd_objseq(mds->mds_id);
853 rc = obd_set_info_async(mds->mds_lov_exp, sizeof(KEY_MDS_CONN),
854 KEY_MDS_CONN, sizeof(mgi), &mgi, NULL);
857 /* propagate capability keys */
858 rc = mds_propagate_capa_keys(mds, uuid);
862 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
864 GOTO(out, rc = -ENODEV);
866 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_LLOG_SYNC_TIMEOUT, 60);
867 rc = llog_connect(ctxt, NULL, NULL, uuid);
870 CERROR("%s failed at llog_origin_connect: %d\n",
871 obd_uuid2str(uuid), rc);
875 LCONSOLE_INFO("MDS %s: %s now active, resetting orphans\n",
876 obd->obd_name, obd_uuid2str(uuid));
877 rc = mds_lov_clear_orphans(mds, uuid);
879 CERROR("%s failed at mds_lov_clear_orphans: %d\n",
880 obd_uuid2str(uuid), rc);
884 #ifdef HAVE_QUOTA_SUPPORT
885 if (obd->obd_upcall.onu_owner) {
887 * This is a hack for mds_notify->mdd_notify. When the mds obd
888 * in mdd is removed, This hack should be removed.
890 LASSERT(obd->obd_upcall.onu_upcall != NULL);
891 rc = obd->obd_upcall.onu_upcall(obd, NULL, OBD_NOTIFY_QUOTA,
892 obd->obd_upcall.onu_owner,NULL);
897 cfs_up_read(&mds->mds_notify_lock);
899 /* Deactivate it for safety */
900 CERROR("%s sync failed %d, deactivating\n", obd_uuid2str(uuid),
902 if (!obd->obd_stopping && mds->mds_lov_obd &&
903 !mds->mds_lov_obd->obd_stopping && !watched->obd_stopping)
904 obd_notify(mds->mds_lov_obd, watched,
905 OBD_NOTIFY_INACTIVE, NULL);
908 class_decref(obd, "mds_lov_synchronize", obd);
912 int mds_lov_synchronize(void *data)
914 struct mds_lov_sync_info *mlsi = data;
917 snprintf(name, sizeof(name), "ll_sync_%02u", mlsi->mlsi_index);
918 cfs_daemonize_ctxt(name);
920 RETURN(__mds_lov_synchronize(data));
923 int mds_lov_start_synchronize(struct obd_device *obd,
924 struct obd_device *watched,
925 void *data, enum obd_notify_event ev)
927 struct mds_lov_sync_info *mlsi;
929 struct obd_uuid *uuid;
933 uuid = &watched->u.cli.cl_target_uuid;
935 OBD_ALLOC(mlsi, sizeof(*mlsi));
940 mlsi->mlsi_obd = obd;
941 mlsi->mlsi_watched = watched;
942 mlsi->mlsi_index = *(__u32 *)data;
945 /* Although class_export_get(obd->obd_self_export) would lock
946 the MDS in place, since it's only a self-export
947 it doesn't lock the LOV in place. The LOV can be disconnected
948 during MDS precleanup, leaving nothing for __mds_lov_synchronize.
949 Simply taking an export ref on the LOV doesn't help, because it's
950 still disconnected. Taking an obd reference insures that we don't
951 disconnect the LOV. This of course means a cleanup won't
952 finish for as long as the sync is blocking. */
953 class_incref(obd, "mds_lov_synchronize", obd);
955 if (ev != OBD_NOTIFY_SYNC) {
956 /* Synchronize in the background */
957 rc = cfs_kernel_thread(mds_lov_synchronize, mlsi,
958 CLONE_VM | CLONE_FILES);
960 CERROR("%s: error starting mds_lov_synchronize: %d\n",
962 class_decref(obd, "mds_lov_synchronize", obd);
964 CDEBUG(D_HA, "%s: mds_lov_synchronize idx=%d "
965 "thread=%d\n", obd->obd_name,
966 mlsi->mlsi_index, rc);
970 rc = __mds_lov_synchronize((void *)mlsi);
976 int mds_notify(struct obd_device *obd, struct obd_device *watched,
977 enum obd_notify_event ev, void *data)
982 CDEBUG(D_CONFIG, "notify %s ev=%d\n", watched->obd_name, ev);
985 /* We only handle these: */
986 case OBD_NOTIFY_ACTIVE:
987 /* lov want one or more _active_ targets for work */
988 /* activate event should be pass lov idx as argument */
989 case OBD_NOTIFY_SYNC:
990 case OBD_NOTIFY_SYNC_NONBLOCK:
991 /* sync event should be pass lov idx as argument */
997 if (strcmp(watched->obd_type->typ_name, LUSTRE_OSC_NAME) != 0) {
998 CERROR("unexpected notification of %s %s!\n",
999 watched->obd_type->typ_name, watched->obd_name);
1003 if (obd->obd_recovering) {
1004 CWARN("MDS %s: in recovery, not resetting orphans on %s\n",
1006 obd_uuid2str(&watched->u.cli.cl_target_uuid));
1007 /* We still have to fix the lov descriptor for ost's added
1008 after the mdt in the config log. They didn't make it into
1010 rc = mds_lov_update_desc(obd, *(__u32 *)data,
1011 &watched->u.cli.cl_target_uuid, ev);
1013 rc = mds_lov_start_synchronize(obd, watched, data, ev);