4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2012, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/osd/osd_compat.c
34 * on-disk structure for managing /O
36 * Author: Alex Zhuravlev <bzzz@whamcloud.com>
39 /* prerequisite for linux/xattr.h */
40 #include <linux/types.h>
41 /* prerequisite for linux/xattr.h */
43 /* XATTR_{REPLACE,CREATE} */
44 #include <linux/xattr.h>
47 * struct OBD_{ALLOC,FREE}*()
50 #include <obd_support.h>
52 #include "osd_internal.h"
55 static void osd_push_ctxt(const struct osd_device *dev,
56 struct lvfs_run_ctxt *newctxt,
57 struct lvfs_run_ctxt *save)
59 OBD_SET_CTXT_MAGIC(newctxt);
60 newctxt->pwdmnt = dev->od_mnt;
61 newctxt->pwd = dev->od_mnt->mnt_root;
62 newctxt->umask = current_umask();
65 push_ctxt(save, newctxt);
68 struct dentry *osd_lookup_one_len_common(struct osd_device *dev,
70 struct dentry *base, int len,
71 enum oi_check_flags flags)
73 struct dentry *dchild;
76 * We can't use inode_is_locked() directly since we can't know
77 * if the current thread context took the lock earlier or if
78 * another thread context took the lock. OI_LOCKED tells us
79 * if the current thread context has already taken the lock.
81 if (!(flags & OI_LOCKED)) {
82 /* If another thread took this lock already we will
83 * just have to wait until the other thread is done.
85 inode_lock(base->d_inode);
86 dchild = lookup_one_len(name, base, len);
87 inode_unlock(base->d_inode);
89 /* This thread context already has taken the lock.
90 * Other threads will have to wait until we are done.
92 dchild = lookup_one_len(name, base, len);
97 if (dchild->d_inode && unlikely(is_bad_inode(dchild->d_inode))) {
98 CERROR("%s: bad inode returned %lu/%u: rc = -ENOENT\n",
99 osd_name(dev), dchild->d_inode->i_ino,
100 dchild->d_inode->i_generation);
102 dchild = ERR_PTR(-ENOENT);
109 * osd_lookup_one_len_unlocked
111 * @dev: obd device we are searching
112 * @name: pathname component to lookup
113 * @base: base directory to lookup from
114 * @len: maximum length @len should be interpreted to
116 * Unlike osd_lookup_one_len, this should be called without the parent
117 * i_mutex held, and will take the i_mutex itself.
119 struct dentry *osd_lookup_one_len_unlocked(struct osd_device *dev,
121 struct dentry *base, int len)
123 return osd_lookup_one_len_common(dev, name, base, len, ~OI_LOCKED);
127 * osd_lookup_one_len - lookup single pathname component
129 * @dev: obd device we are searching
130 * @name: pathname component to lookup
131 * @base: base directory to lookup from
132 * @len: maximum length @len should be interpreted to
134 * The caller must hold inode lock
136 struct dentry *osd_lookup_one_len(struct osd_device *dev, const char *name,
137 struct dentry *base, int len)
139 return osd_lookup_one_len_common(dev, name, base, len, OI_LOCKED);
142 /* utility to make a directory */
143 static struct dentry *
144 simple_mkdir(const struct lu_env *env, struct osd_device *osd,
145 struct dentry *dir, const struct lu_fid *fid,
146 const char *name, __u32 compat, int mode, bool *created)
148 struct osd_thread_info *info = osd_oti_get(env);
149 struct lu_fid *tfid = &info->oti_fid3;
151 struct dentry *dchild;
156 // ASSERT_KERNEL_CTXT("kernel doing mkdir outside kernel context\n");
157 CDEBUG(D_INODE, "creating directory %.*s\n", (int)strlen(name), name);
158 dchild = osd_lookup_one_len_unlocked(osd, name, dir, strlen(name));
162 inode = dchild->d_inode;
164 struct lustre_mdt_attrs *lma = &info->oti_ost_attrs.loa_lma;
165 int old_mode = inode->i_mode;
170 if (!S_ISDIR(old_mode)) {
171 CERROR("found %s (%lu/%u) is mode %o\n", name,
172 inode->i_ino, inode->i_generation, old_mode);
173 GOTO(out_err, err = -ENOTDIR);
176 if (unlikely(osd->od_dt_dev.dd_rdonly))
179 /* Fixup directory permissions if necessary */
180 if ((old_mode & S_IALLUGO) != (mode & S_IALLUGO)) {
182 "fixing permissions on %s from %o to %o\n",
183 name, old_mode, mode);
184 inode->i_mode = (mode & S_IALLUGO) |
185 (old_mode & ~S_IALLUGO);
186 mark_inode_dirty(inode);
189 err = osd_get_lma(info, inode, &info->oti_obj_dentry,
190 &info->oti_ost_attrs);
197 if ((fid && !lu_fid_eq(fid, &lma->lma_self_fid)) ||
198 lma->lma_compat != compat)
204 err = vfs_mkdir(dir->d_inode, dchild, mode);
208 inode = dchild->d_inode;
216 lu_igif_build(tfid, inode->i_ino, inode->i_generation);
217 err = osd_ea_fid_set(info, inode, tfid, compat, 0);
228 static int osd_last_rcvd_subdir_count(struct osd_device *osd)
230 struct lr_server_data lsd;
231 struct dentry *dlast;
234 int count = OBJ_SUBDIR_COUNT;
238 dlast = osd_lookup_one_len_unlocked(osd, LAST_RCVD, osd_sb(osd)->s_root,
241 return PTR_ERR(dlast);
242 else if (dlast->d_inode == NULL)
246 rc = osd_ldiskfs_read(dlast->d_inode, &lsd, sizeof(lsd), &off);
247 if (rc == sizeof(lsd)) {
249 "read last_rcvd header, uuid = %s, subdir count = %d\n",
250 lsd.lsd_uuid, lsd.lsd_subdir_count);
251 if (le16_to_cpu(lsd.lsd_subdir_count) > 0)
252 count = le16_to_cpu(lsd.lsd_subdir_count);
253 } else if (rc != 0) {
254 CERROR("Can't read last_rcvd file, rc = %d\n", rc);
266 static int osd_mdt_init(const struct lu_env *env, struct osd_device *dev)
268 struct lvfs_run_ctxt new;
269 struct lvfs_run_ctxt save;
270 struct dentry *parent;
271 struct osd_mdobj_map *omm;
273 struct osd_thread_info *info = osd_oti_get(env);
274 struct lu_fid *fid = &info->oti_fid3;
279 OBD_ALLOC_PTR(dev->od_mdt_map);
280 if (dev->od_mdt_map == NULL)
283 omm = dev->od_mdt_map;
285 parent = osd_sb(dev)->s_root;
286 osd_push_ctxt(dev, &new, &save);
288 lu_local_obj_fid(fid, REMOTE_PARENT_DIR_OID);
289 d = simple_mkdir(env, dev, parent, fid, REMOTE_PARENT_DIR,
290 LMAC_NOT_IN_OI, 0755, NULL);
292 GOTO(cleanup, rc = PTR_ERR(d));
294 omm->omm_remote_parent = d;
296 GOTO(cleanup, rc = 0);
299 pop_ctxt(&save, &new);
301 if (omm->omm_remote_parent != NULL)
302 dput(omm->omm_remote_parent);
304 dev->od_mdt_map = NULL;
309 static void osd_mdt_fini(struct osd_device *osd)
311 struct osd_mdobj_map *omm = osd->od_mdt_map;
316 if (omm->omm_remote_parent)
317 dput(omm->omm_remote_parent);
320 osd->od_ost_map = NULL;
323 int osd_add_to_remote_parent(const struct lu_env *env, struct osd_device *osd,
324 struct osd_object *obj, struct osd_thandle *oh)
326 struct osd_mdobj_map *omm = osd->od_mdt_map;
327 struct osd_thread_info *oti = osd_oti_get(env);
328 struct lustre_mdt_attrs *lma = &oti->oti_ost_attrs.loa_lma;
329 char *name = oti->oti_name;
330 struct osd_thread_info *info = osd_oti_get(env);
331 struct dentry *dentry;
332 struct dentry *parent;
335 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NO_AGENTENT))
339 * Set REMOTE_PARENT in lma, so other process like unlink or lfsck
340 * can identify this object quickly
342 rc = osd_get_lma(oti, obj->oo_inode, &oti->oti_obj_dentry,
343 &oti->oti_ost_attrs);
347 lma->lma_incompat |= LMAI_REMOTE_PARENT;
348 lustre_lma_swab(lma);
349 rc = __osd_xattr_set(oti, obj->oo_inode, XATTR_NAME_LMA, lma,
350 sizeof(*lma), XATTR_REPLACE);
354 parent = omm->omm_remote_parent;
355 sprintf(name, DFID_NOBRACE, PFID(lu_object_fid(&obj->oo_dt.do_lu)));
356 dentry = osd_child_dentry_by_inode(env, parent->d_inode,
358 inode_lock(parent->d_inode);
359 rc = osd_ldiskfs_add_entry(info, osd, oh->ot_handle, dentry,
360 obj->oo_inode, NULL);
361 if (!rc && S_ISDIR(obj->oo_inode->i_mode))
362 ldiskfs_inc_count(oh->ot_handle, parent->d_inode);
363 else if (unlikely(rc == -EEXIST))
366 lu_object_set_agent_entry(&obj->oo_dt.do_lu);
367 CDEBUG(D_INODE, "%s: create agent entry for %s: rc = %d\n",
368 osd_name(osd), name, rc);
369 mark_inode_dirty(parent->d_inode);
370 inode_unlock(parent->d_inode);
374 int osd_delete_from_remote_parent(const struct lu_env *env,
375 struct osd_device *osd,
376 struct osd_object *obj,
377 struct osd_thandle *oh, bool destroy)
379 struct osd_mdobj_map *omm = osd->od_mdt_map;
380 struct osd_thread_info *oti = osd_oti_get(env);
381 struct lustre_mdt_attrs *lma = &oti->oti_ost_attrs.loa_lma;
382 char *name = oti->oti_name;
383 struct dentry *dentry;
384 struct dentry *parent;
385 struct ldiskfs_dir_entry_2 *de;
386 struct buffer_head *bh;
389 parent = omm->omm_remote_parent;
390 sprintf(name, DFID_NOBRACE, PFID(lu_object_fid(&obj->oo_dt.do_lu)));
391 dentry = osd_child_dentry_by_inode(env, parent->d_inode,
393 inode_lock(parent->d_inode);
394 bh = osd_ldiskfs_find_entry(parent->d_inode, &dentry->d_name, &de,
397 inode_unlock(parent->d_inode);
399 if (unlikely(rc == -ENOENT))
402 rc = ldiskfs_delete_entry(oh->ot_handle, parent->d_inode,
404 if (!rc && S_ISDIR(obj->oo_inode->i_mode))
405 ldiskfs_dec_count(oh->ot_handle, parent->d_inode);
406 mark_inode_dirty(parent->d_inode);
407 inode_unlock(parent->d_inode);
409 CDEBUG(D_INODE, "%s: remove agent entry for %s: rc = %d\n",
410 osd_name(osd), name, rc);
415 lu_object_clear_agent_entry(&obj->oo_dt.do_lu);
420 rc = osd_get_lma(oti, obj->oo_inode, &oti->oti_obj_dentry,
421 &oti->oti_ost_attrs);
425 /* Get rid of REMOTE_PARENT flag from incompat */
426 lma->lma_incompat &= ~LMAI_REMOTE_PARENT;
427 lustre_lma_swab(lma);
428 rc = __osd_xattr_set(oti, obj->oo_inode, XATTR_NAME_LMA, lma,
429 sizeof(*lma), XATTR_REPLACE);
431 lu_object_clear_agent_entry(&obj->oo_dt.do_lu);
435 int osd_lookup_in_remote_parent(struct osd_thread_info *oti,
436 struct osd_device *osd,
437 const struct lu_fid *fid,
438 struct osd_inode_id *id)
440 struct osd_mdobj_map *omm = osd->od_mdt_map;
441 char *name = oti->oti_name;
442 struct dentry *parent;
443 struct dentry *dentry;
444 struct ldiskfs_dir_entry_2 *de;
445 struct buffer_head *bh;
450 if (unlikely(osd->od_is_ost))
453 parent = omm->omm_remote_parent;
454 sprintf(name, DFID_NOBRACE, PFID(fid));
455 dentry = osd_child_dentry_by_inode(oti->oti_env, parent->d_inode,
457 inode_lock(parent->d_inode);
458 bh = osd_ldiskfs_find_entry(parent->d_inode, &dentry->d_name, &de,
465 osd_id_gen(id, le32_to_cpu(de->inode), OSD_OII_NOGEN);
467 inode = osd_iget(oti, osd, id);
477 inode_unlock(parent->d_inode);
479 osd_add_oi_cache(oti, osd, id, fid);
484 * directory structure on legacy OST:
486 * O/<seq>/d0-31/<objid>
493 static int osd_ost_init(const struct lu_env *env, struct osd_device *dev)
495 struct lvfs_run_ctxt new;
496 struct lvfs_run_ctxt save;
499 bool created = false;
503 OBD_ALLOC_PTR(dev->od_ost_map);
504 if (dev->od_ost_map == NULL)
507 /* to get subdir count from last_rcvd */
508 rc = osd_last_rcvd_subdir_count(dev);
510 GOTO(cleanup_alloc, rc);
512 dev->od_ost_map->om_subdir_count = rc;
513 INIT_LIST_HEAD(&dev->od_ost_map->om_seq_list);
514 rwlock_init(&dev->od_ost_map->om_seq_list_lock);
515 mutex_init(&dev->od_ost_map->om_dir_init_mutex);
517 osd_push_ctxt(dev, &new, &save);
518 d = simple_mkdir(env, dev, osd_sb(dev)->s_root, NULL, "O",
519 LMAC_NOT_IN_OI | LMAC_FID_ON_OST, 0755, &created);
521 GOTO(cleanup_ctxt, rc = PTR_ERR(d));
524 /* It is quite probably that the device is new formatted. */
525 dev->od_maybe_new = 1;
527 dev->od_ost_map->om_root = d;
529 pop_ctxt(&save, &new);
533 pop_ctxt(&save, &new);
535 OBD_FREE_PTR(dev->od_ost_map);
539 static void osd_seq_free(struct osd_obj_seq *osd_seq)
543 if (osd_seq->oos_dirs) {
544 for (j = 0; j < osd_seq->oos_subdir_count; j++) {
545 if (osd_seq->oos_dirs[j])
546 dput(osd_seq->oos_dirs[j]);
548 OBD_FREE_PTR_ARRAY(osd_seq->oos_dirs,
549 osd_seq->oos_subdir_count);
552 if (osd_seq->oos_root)
553 dput(osd_seq->oos_root);
555 OBD_FREE_PTR(osd_seq);
558 static void osd_ost_fini(struct osd_device *osd)
560 struct osd_obj_seq *osd_seq;
561 struct osd_obj_seq *tmp;
562 struct osd_obj_map *map = osd->od_ost_map;
569 write_lock(&map->om_seq_list_lock);
570 list_for_each_entry_safe(osd_seq, tmp, &map->om_seq_list,
572 list_del_init(&osd_seq->oos_seq_list);
573 write_unlock(&map->om_seq_list_lock);
574 osd_seq_free(osd_seq);
575 write_lock(&map->om_seq_list_lock);
577 write_unlock(&map->om_seq_list_lock);
581 osd->od_ost_map = NULL;
585 static int osd_index_backup_dir_init(const struct lu_env *env,
586 struct osd_device *dev)
588 struct lu_fid *fid = &osd_oti_get(env)->oti_fid;
589 struct lvfs_run_ctxt new;
590 struct lvfs_run_ctxt save;
591 struct dentry *dentry;
596 lu_local_obj_fid(fid, INDEX_BACKUP_OID);
597 osd_push_ctxt(dev, &new, &save);
598 dentry = simple_mkdir(env, dev, osd_sb(dev)->s_root, fid,
599 INDEX_BACKUP_DIR, LMAC_NOT_IN_OI, 0755, NULL);
600 if (IS_ERR(dentry)) {
601 rc = PTR_ERR(dentry);
603 dev->od_index_backup_inode = igrab(dentry->d_inode);
606 pop_ctxt(&save, &new);
611 static void osd_index_backup_dir_fini(struct osd_device *dev)
613 iput(dev->od_index_backup_inode);
614 dev->od_index_backup_inode = NULL;
617 int osd_obj_map_init(const struct lu_env *env, struct osd_device *dev)
620 bool mdt_init = false;
624 rc = osd_ost_init(env, dev);
628 if (!dev->od_is_ost) {
629 rc = osd_mdt_init(env, dev);
638 rc = osd_index_backup_dir_init(env, dev);
648 static struct osd_obj_seq *osd_seq_find_locked(struct osd_obj_map *map, u64 seq)
650 struct osd_obj_seq *osd_seq;
652 list_for_each_entry(osd_seq, &map->om_seq_list, oos_seq_list) {
653 if (osd_seq->oos_seq == seq)
659 static struct osd_obj_seq *osd_seq_find(struct osd_obj_map *map, u64 seq)
661 struct osd_obj_seq *osd_seq;
663 read_lock(&map->om_seq_list_lock);
664 osd_seq = osd_seq_find_locked(map, seq);
665 read_unlock(&map->om_seq_list_lock);
669 void osd_obj_map_fini(struct osd_device *dev)
671 osd_index_backup_dir_fini(dev);
677 * Update the specified OI mapping.
679 * \retval 1, changed nothing
680 * \retval 0, changed successfully
681 * \retval -ve, on error
683 static int osd_obj_update_entry(struct osd_thread_info *info,
684 struct osd_device *osd,
685 struct dentry *dir, const char *name,
686 const struct lu_fid *fid,
687 const struct osd_inode_id *id,
690 struct inode *parent = dir->d_inode;
691 struct dentry *child;
692 struct ldiskfs_dir_entry_2 *de;
693 struct buffer_head *bh;
695 struct dentry *dentry = &info->oti_obj_dentry;
696 struct osd_inode_id *oi_id = &info->oti_id3;
697 struct lustre_mdt_attrs *lma = &info->oti_ost_attrs.loa_lma;
698 struct lu_fid *oi_fid = &lma->lma_self_fid;
704 LASSERT(th->h_transaction != NULL);
706 child = &info->oti_child_dentry;
707 child->d_parent = dir;
708 child->d_name.hash = 0;
709 child->d_name.name = name;
710 child->d_name.len = strlen(name);
712 dquot_initialize(parent);
714 bh = osd_ldiskfs_find_entry(parent, &child->d_name, &de, NULL, NULL);
716 GOTO(out, rc = PTR_ERR(bh));
718 if (le32_to_cpu(de->inode) == id->oii_ino)
721 osd_id_gen(oi_id, le32_to_cpu(de->inode), OSD_OII_NOGEN);
722 inode = osd_iget(info, osd, oi_id);
725 if (rc == -ENOENT || rc == -ESTALE)
731 * The EA inode should NOT be in OI, old OI scrub may added
732 * such OI mapping by wrong, replace it.
734 if (unlikely(osd_is_ea_inode(inode))) {
739 rc = osd_get_lma(info, inode, dentry, &info->oti_ost_attrs);
740 if (rc == -ENODATA) {
741 rc = osd_get_idif(info, inode, dentry, oi_fid);
742 if (rc > 0 || rc == -ENODATA) {
753 * If the OST-object has neither FID-in-LMA nor FID-in-ff, it is
754 * either a crashed object or a uninitialized one. Replace it.
756 if (oi_fid != NULL && lu_fid_eq(fid, oi_fid)) {
757 CERROR("%s: the FID "DFID" is used by two objects: "
758 "%u/%u %u/%u\n", osd_name(osd), PFID(fid),
759 oi_id->oii_ino, oi_id->oii_gen,
760 id->oii_ino, id->oii_gen);
761 GOTO(out, rc = -EEXIST);
764 if (fid_is_idif(fid) && oi_fid != NULL && fid_is_idif(oi_fid)) {
765 __u32 idx1 = fid_idif_ost_idx(fid);
766 __u32 idx2 = fid_idif_ost_idx(oi_fid);
767 struct ost_id *ostid = &info->oti_ostid;
768 struct lu_fid *tfid = &info->oti_fid3;
770 LASSERTF(idx1 == 0 || idx1 == osd->od_index,
771 "invalid given FID "DFID", not match the "
772 "device index %u\n", PFID(fid), osd->od_index);
775 if (idx1 == 0 && idx2 == osd->od_index) {
776 fid_to_ostid(fid, ostid);
777 ostid_to_fid(tfid, ostid, idx2);
778 if (lu_fid_eq(tfid, oi_fid)) {
779 CERROR("%s: the FID "DFID" is used by "
780 "two objects(2): %u/%u %u/%u\n",
781 osd_name(osd), PFID(fid),
782 oi_id->oii_ino, oi_id->oii_gen,
783 id->oii_ino, id->oii_gen);
785 GOTO(out, rc = -EEXIST);
787 } else if (idx2 == 0 && idx1 == osd->od_index) {
788 fid_to_ostid(oi_fid, ostid);
789 ostid_to_fid(tfid, ostid, idx1);
790 if (lu_fid_eq(tfid, fid)) {
791 CERROR("%s: the FID "DFID" is used by "
792 "two objects(2): %u/%u %u/%u\n",
793 osd_name(osd), PFID(fid),
794 oi_id->oii_ino, oi_id->oii_gen,
795 id->oii_ino, id->oii_gen);
797 GOTO(out, rc = -EEXIST);
805 * There may be temporary inconsistency: On one hand, the new
806 * object may be referenced by multiple entries, which is out
807 * of our control unless we traverse the whole /O completely,
808 * which is non-flat order and inefficient, should be avoided;
809 * On the other hand, the old object may become orphan if it
810 * is still valid. Since it was referenced by an invalid entry,
811 * making it as invisible temporary may be not worse. OI scrub
812 * will process it later.
814 rc = ldiskfs_journal_get_write_access(th, bh);
818 de->inode = cpu_to_le32(id->oii_ino);
819 rc = ldiskfs_handle_dirty_metadata(th, NULL, bh);
826 inode_unlock(parent);
830 static int osd_obj_del_entry(struct osd_thread_info *info,
831 struct osd_device *osd,
832 struct dentry *dird, char *name,
835 struct ldiskfs_dir_entry_2 *de;
836 struct buffer_head *bh;
837 struct dentry *child;
838 struct inode *dir = dird->d_inode;
844 LASSERT(th->h_transaction != NULL);
846 child = &info->oti_child_dentry;
847 child->d_name.hash = 0;
848 child->d_name.name = name;
849 child->d_name.len = strlen(name);
850 child->d_parent = dird;
851 child->d_inode = NULL;
853 dquot_initialize(dir);
855 bh = osd_ldiskfs_find_entry(dir, &child->d_name, &de, NULL, NULL);
859 rc = ldiskfs_delete_entry(th, dir, de, bh);
867 static int osd_obj_add_entry(struct osd_thread_info *info,
868 struct osd_device *osd,
869 struct dentry *dir, char *name,
870 const struct osd_inode_id *id,
873 struct dentry *child;
879 if (OBD_FAIL_CHECK(OBD_FAIL_OSD_COMPAT_NO_ENTRY))
883 LASSERT(th->h_transaction != NULL);
885 inode = info->oti_inode;
886 if (unlikely(inode == NULL)) {
887 struct ldiskfs_inode_info *lii;
892 inode = info->oti_inode = &lii->vfs_inode;
895 inode->i_sb = osd_sb(osd);
896 osd_id_to_inode(inode, id);
897 inode->i_mode = S_IFREG; /* for type in ldiskfs dir entry */
899 child = &info->oti_child_dentry;
900 child->d_name.hash = 0;
901 child->d_name.name = name;
902 child->d_name.len = strlen(name);
903 child->d_parent = dir;
904 child->d_inode = inode;
906 if (OBD_FAIL_CHECK(OBD_FAIL_OSD_COMPAT_INVALID_ENTRY))
909 dquot_initialize(dir->d_inode);
910 inode_lock(dir->d_inode);
911 rc = osd_ldiskfs_add_entry(info, osd, th, child, inode, NULL);
912 inode_unlock(dir->d_inode);
918 * Use %llu for legacy OST sequences, but use %llx for new
919 * sequences names, so that the O/{seq}/dN/{oid} more closely
920 * follows the DFID/PFID format. This makes it easier to map from
921 * debug messages to objects in the future, and the legacy space
922 * of FID_SEQ_OST_MDT0 will be unused in the future.
924 static inline void osd_seq_name(char *seq_name, size_t name_size, u64 seq)
926 snprintf(seq_name, name_size,
927 (fid_seq_is_rsvd(seq) ||
928 fid_seq_is_mdt0(seq)) ? "%llu" : "%llx",
929 fid_seq_is_idif(seq) ? 0 : seq);
932 static inline void osd_oid_name(char *name, size_t name_size,
933 const struct lu_fid *fid, u64 id)
935 snprintf(name, name_size,
936 (fid_seq_is_rsvd(fid_seq(fid)) ||
937 fid_seq_is_mdt0(fid_seq(fid)) ||
938 fid_seq_is_idif(fid_seq(fid))) ? "%llu" : "%llx", id);
941 /* external locking is required */
942 static int osd_seq_load_locked(struct osd_thread_info *info,
943 struct osd_device *osd,
944 struct osd_obj_seq *osd_seq)
946 struct osd_obj_map *map = osd->od_ost_map;
947 struct dentry *seq_dir;
954 if (osd_seq->oos_root != NULL)
958 LASSERT(map->om_root);
960 osd_seq_name(dir_name, sizeof(dir_name), osd_seq->oos_seq);
962 seq_dir = simple_mkdir(info->oti_env, osd, map->om_root, NULL, dir_name,
963 LMAC_NOT_IN_OI | LMAC_FID_ON_OST, 0755, NULL);
965 GOTO(out_err, rc = PTR_ERR(seq_dir));
966 else if (seq_dir->d_inode == NULL)
967 GOTO(out_put, rc = -EFAULT);
969 osd_seq->oos_root = seq_dir;
971 LASSERT(osd_seq->oos_dirs == NULL);
972 OBD_ALLOC_PTR_ARRAY(osd_seq->oos_dirs, osd_seq->oos_subdir_count);
973 if (osd_seq->oos_dirs == NULL)
974 GOTO(out_put, rc = -ENOMEM);
976 for (i = 0; i < osd_seq->oos_subdir_count; i++) {
979 snprintf(dir_name, sizeof(dir_name), "d%u", i);
980 dir = simple_mkdir(info->oti_env, osd, osd_seq->oos_root, NULL,
981 dir_name, LMAC_NOT_IN_OI | LMAC_FID_ON_OST,
984 GOTO(out_free, rc = PTR_ERR(dir));
985 } else if (dir->d_inode == NULL) {
987 GOTO(out_free, rc = -EFAULT);
990 osd_seq->oos_dirs[i] = dir;
995 for (i = 0; i < osd_seq->oos_subdir_count; i++) {
996 if (osd_seq->oos_dirs[i] != NULL)
997 dput(osd_seq->oos_dirs[i]);
999 OBD_FREE_PTR_ARRAY(osd_seq->oos_dirs,
1000 osd_seq->oos_subdir_count);
1003 osd_seq->oos_root = NULL;
1009 static struct osd_obj_seq *osd_seq_load(struct osd_thread_info *info,
1010 struct osd_device *osd, u64 seq)
1012 struct osd_obj_map *map;
1013 struct osd_obj_seq *osd_seq;
1018 map = osd->od_ost_map;
1020 LASSERT(map->om_root);
1022 osd_seq = osd_seq_find(map, seq);
1023 if (likely(osd_seq != NULL))
1026 /* Serializing init process */
1027 mutex_lock(&map->om_dir_init_mutex);
1029 /* Check whether the seq has been added */
1030 read_lock(&map->om_seq_list_lock);
1031 osd_seq = osd_seq_find_locked(map, seq);
1032 if (osd_seq != NULL) {
1033 read_unlock(&map->om_seq_list_lock);
1034 GOTO(cleanup, rc = 0);
1036 read_unlock(&map->om_seq_list_lock);
1038 OBD_ALLOC_PTR(osd_seq);
1039 if (osd_seq == NULL)
1040 GOTO(cleanup, rc = -ENOMEM);
1042 INIT_LIST_HEAD(&osd_seq->oos_seq_list);
1043 osd_seq->oos_seq = seq;
1045 * Init subdir count to be 32, but each seq can have
1046 * different subdir count
1048 osd_seq->oos_subdir_count = map->om_subdir_count;
1049 rc = osd_seq_load_locked(info, osd, osd_seq);
1053 write_lock(&map->om_seq_list_lock);
1054 list_add(&osd_seq->oos_seq_list, &map->om_seq_list);
1055 write_unlock(&map->om_seq_list_lock);
1058 mutex_unlock(&map->om_dir_init_mutex);
1060 if (osd_seq != NULL)
1061 OBD_FREE_PTR(osd_seq);
1062 RETURN(ERR_PTR(rc));
1068 int osd_obj_map_lookup(struct osd_thread_info *info, struct osd_device *dev,
1069 const struct lu_fid *fid, struct osd_inode_id *id)
1071 struct osd_obj_map *map;
1072 struct osd_obj_seq *osd_seq;
1073 struct dentry *d_seq;
1074 struct dentry *child;
1075 struct ost_id *ostid = &info->oti_ostid;
1078 struct ldiskfs_dir_entry_2 *de;
1079 struct buffer_head *bh;
1081 struct inode *inode;
1085 /* on the very first lookup we find and open directories */
1086 map = dev->od_ost_map;
1088 LASSERT(map->om_root);
1090 fid_to_ostid(fid, ostid);
1091 osd_seq = osd_seq_load(info, dev, ostid_seq(ostid));
1092 if (IS_ERR(osd_seq))
1093 RETURN(PTR_ERR(osd_seq));
1095 dirn = ostid_id(ostid) & (osd_seq->oos_subdir_count - 1);
1096 d_seq = osd_seq->oos_dirs[dirn];
1099 osd_oid_name(name, sizeof(name), fid, ostid_id(ostid));
1101 child = &info->oti_child_dentry;
1102 child->d_parent = d_seq;
1103 child->d_name.hash = 0;
1104 child->d_name.name = name;
1105 /* XXX: we can use rc from sprintf() instead of strlen() */
1106 child->d_name.len = strlen(name);
1108 dir = d_seq->d_inode;
1110 bh = osd_ldiskfs_find_entry(dir, &child->d_name, &de, NULL, NULL);
1114 RETURN(PTR_ERR(bh));
1116 osd_id_gen(id, le32_to_cpu(de->inode), OSD_OII_NOGEN);
1119 inode = osd_iget(info, dev, id);
1120 if (IS_ERR(inode)) {
1121 int rc = PTR_ERR(inode);
1123 RETURN(rc == -ENOENT ? -ESTALE : rc);
1130 int osd_obj_map_insert(struct osd_thread_info *info,
1131 struct osd_device *osd,
1132 const struct lu_fid *fid,
1133 const struct osd_inode_id *id,
1136 struct osd_obj_map *map;
1137 struct osd_obj_seq *osd_seq;
1139 struct ost_id *ostid = &info->oti_ostid;
1146 map = osd->od_ost_map;
1149 /* map fid to seq:objid */
1150 fid_to_ostid(fid, ostid);
1152 oid = ostid_id(ostid);
1153 osd_seq = osd_seq_load(info, osd, ostid_seq(ostid));
1154 if (IS_ERR(osd_seq))
1155 RETURN(PTR_ERR(osd_seq));
1157 dirn = oid & (osd_seq->oos_subdir_count - 1);
1158 d = osd_seq->oos_dirs[dirn];
1161 osd_oid_name(name, sizeof(name), fid, oid);
1164 rc = osd_obj_add_entry(info, osd, d, name, id, th);
1165 if (rc == -EEXIST) {
1166 rc = osd_obj_update_entry(info, osd, d, name, fid, id, th);
1167 if (unlikely(rc == -ENOENT))
1170 if (unlikely(rc == 1))
1177 int osd_obj_map_delete(struct osd_thread_info *info, struct osd_device *osd,
1178 const struct lu_fid *fid, handle_t *th)
1180 struct osd_obj_map *map;
1181 struct osd_obj_seq *osd_seq;
1183 struct ost_id *ostid = &info->oti_ostid;
1189 map = osd->od_ost_map;
1192 /* map fid to seq:objid */
1193 fid_to_ostid(fid, ostid);
1195 osd_seq = osd_seq_load(info, osd, ostid_seq(ostid));
1196 if (IS_ERR(osd_seq))
1197 GOTO(cleanup, rc = PTR_ERR(osd_seq));
1199 dirn = ostid_id(ostid) & (osd_seq->oos_subdir_count - 1);
1200 d = osd_seq->oos_dirs[dirn];
1203 osd_oid_name(name, sizeof(name), fid, ostid_id(ostid));
1204 rc = osd_obj_del_entry(info, osd, d, name, th);
1209 int osd_obj_map_update(struct osd_thread_info *info,
1210 struct osd_device *osd,
1211 const struct lu_fid *fid,
1212 const struct osd_inode_id *id,
1215 struct osd_obj_seq *osd_seq;
1217 struct ost_id *ostid = &info->oti_ostid;
1223 fid_to_ostid(fid, ostid);
1224 osd_seq = osd_seq_load(info, osd, ostid_seq(ostid));
1225 if (IS_ERR(osd_seq))
1226 RETURN(PTR_ERR(osd_seq));
1228 dirn = ostid_id(ostid) & (osd_seq->oos_subdir_count - 1);
1229 d = osd_seq->oos_dirs[dirn];
1232 osd_oid_name(name, sizeof(name), fid, ostid_id(ostid));
1233 rc = osd_obj_update_entry(info, osd, d, name, fid, id, th);
1238 int osd_obj_map_recover(struct osd_thread_info *info,
1239 struct osd_device *osd,
1240 struct inode *src_parent,
1241 struct dentry *src_child,
1242 const struct lu_fid *fid)
1244 struct osd_obj_seq *osd_seq;
1245 struct dentry *tgt_parent;
1246 struct dentry *tgt_child = &info->oti_child_dentry;
1248 struct inode *inode = src_child->d_inode;
1249 struct ost_id *ostid = &info->oti_ostid;
1251 struct ldiskfs_dir_entry_2 *de;
1252 struct buffer_head *bh;
1259 if (fid_is_last_id(fid)) {
1260 osd_seq = osd_seq_load(info, osd, fid_seq(fid));
1261 if (IS_ERR(osd_seq))
1262 RETURN(PTR_ERR(osd_seq));
1264 tgt_parent = osd_seq->oos_root;
1265 tgt_child->d_name.name = "LAST_ID";
1266 tgt_child->d_name.len = strlen("LAST_ID");
1268 fid_to_ostid(fid, ostid);
1269 osd_seq = osd_seq_load(info, osd, ostid_seq(ostid));
1270 if (IS_ERR(osd_seq))
1271 RETURN(PTR_ERR(osd_seq));
1273 dirn = ostid_id(ostid) & (osd_seq->oos_subdir_count - 1);
1274 tgt_parent = osd_seq->oos_dirs[dirn];
1275 osd_oid_name(name, sizeof(name), fid, ostid_id(ostid));
1276 tgt_child->d_name.name = name;
1277 tgt_child->d_name.len = strlen(name);
1279 LASSERT(tgt_parent != NULL);
1281 dir = tgt_parent->d_inode;
1282 tgt_child->d_name.hash = 0;
1283 tgt_child->d_parent = tgt_parent;
1284 tgt_child->d_inode = inode;
1286 /* The non-initialized src_child may be destroyed. */
1287 jh = osd_journal_start_sb(osd_sb(osd), LDISKFS_HT_MISC,
1288 osd_dto_credits_noquota[DTO_INDEX_DELETE] +
1289 osd_dto_credits_noquota[DTO_INDEX_INSERT] +
1290 osd_dto_credits_noquota[DTO_OBJECT_DELETE]);
1292 RETURN(PTR_ERR(jh));
1294 dquot_initialize(src_parent);
1295 dquot_initialize(dir);
1298 bh = osd_ldiskfs_find_entry(dir, &tgt_child->d_name, &de, NULL, NULL);
1301 * XXX: If some other object occupied the same slot. And If such
1302 * inode is zero-sized and with SUID+SGID, then means it is
1303 * a new created one. Maybe we can remove it and insert the
1304 * original one back to the /O/<seq>/d<x>. But there are
1305 * something to be considered:
1307 * 1) The OST-object under /lost+found has crashed LMA.
1308 * So it should not conflict with the current one.
1310 * 2) There are race conditions that: someone may just want
1311 * to modify the current one. Even if the OI scrub takes
1312 * the object lock when remove the current one, it still
1313 * cause the modification to be lost becasue the target
1314 * has been removed when the RPC service thread waiting
1317 * So keep it there before we have suitable solution.
1321 ldiskfs_journal_stop(jh);
1324 /* If the src object has never been modified, then remove it. */
1325 if (inode->i_size == 0 && inode->i_mode & S_ISUID &&
1326 inode->i_mode & S_ISGID) {
1327 rc = ll_vfs_unlink(src_parent, src_child);
1328 if (unlikely(rc == -ENOENT))
1335 bh = osd_ldiskfs_find_entry(src_parent, &src_child->d_name, &de,
1337 if (unlikely(IS_ERR(bh)))
1338 GOTO(unlock, rc = PTR_ERR(bh));
1340 rc = ldiskfs_delete_entry(jh, src_parent, de, bh);
1345 rc = osd_ldiskfs_add_entry(info, osd, jh, tgt_child, inode, NULL);
1351 ldiskfs_journal_stop(jh);
1355 static struct dentry *
1356 osd_object_spec_find(struct osd_thread_info *info, struct osd_device *osd,
1357 const struct lu_fid *fid, char **name)
1359 struct dentry *root = ERR_PTR(-ENOENT);
1361 if (fid_is_last_id(fid)) {
1362 struct osd_obj_seq *osd_seq;
1364 /* on creation of LAST_ID we create O/<seq> hierarchy */
1365 osd_seq = osd_seq_load(info, osd, fid_seq(fid));
1366 if (IS_ERR(osd_seq))
1367 RETURN((struct dentry *)osd_seq);
1370 root = osd_seq->oos_root;
1372 *name = osd_lf_fid2name(fid);
1374 CWARN("UNKNOWN COMPAT FID "DFID"\n", PFID(fid));
1375 else if ((*name)[0])
1376 root = osd_sb(osd)->s_root;
1382 int osd_obj_spec_update(struct osd_thread_info *info, struct osd_device *osd,
1383 const struct lu_fid *fid, const struct osd_inode_id *id,
1386 struct dentry *root;
1392 root = osd_object_spec_find(info, osd, fid, &name);
1393 if (!IS_ERR(root)) {
1394 rc = osd_obj_update_entry(info, osd, root, name, fid, id, th);
1404 int osd_obj_spec_insert(struct osd_thread_info *info, struct osd_device *osd,
1405 const struct lu_fid *fid, const struct osd_inode_id *id,
1408 struct dentry *root;
1414 root = osd_object_spec_find(info, osd, fid, &name);
1415 if (!IS_ERR(root)) {
1416 rc = osd_obj_add_entry(info, osd, root, name, id, th);
1426 int osd_obj_spec_lookup(struct osd_thread_info *info, struct osd_device *osd,
1427 const struct lu_fid *fid, struct osd_inode_id *id,
1428 enum oi_check_flags flags)
1430 struct dentry *root;
1431 struct dentry *dentry;
1432 struct inode *inode;
1438 if (fid_is_last_id(fid)) {
1439 struct osd_obj_seq *osd_seq;
1441 osd_seq = osd_seq_load(info, osd, fid_seq(fid));
1442 if (IS_ERR(osd_seq))
1443 RETURN(PTR_ERR(osd_seq));
1444 root = osd_seq->oos_root;
1447 root = osd_sb(osd)->s_root;
1448 name = osd_lf_fid2name(fid);
1449 if (name == NULL || strlen(name) == 0)
1453 dentry = osd_lookup_one_len_common(osd, name, root, strlen(name),
1455 if (!IS_ERR(dentry)) {
1456 inode = dentry->d_inode;
1458 if (is_bad_inode(inode)) {
1461 osd_id_gen(id, inode->i_ino,
1462 inode->i_generation);
1467 * if dentry is accessible after osd_compat_spec_insert it
1468 * will still contain NULL inode, so don't keep it in cache
1470 d_invalidate(dentry);
1477 #ifndef HAVE_BIO_INTEGRITY_ENABLED
1478 bool bio_integrity_enabled(struct bio *bio)
1480 struct blk_integrity *bi = blk_get_integrity(bio_get_disk(bio));
1482 if (bio_op(bio) != REQ_OP_READ && bio_op(bio) != REQ_OP_WRITE)
1485 if (!bio_sectors(bio))
1488 /* Already protected? */
1489 if (bio_integrity(bio))
1495 if (bio_data_dir(bio) == READ && bi->profile->verify_fn != NULL &&
1496 (bi->flags & BLK_INTEGRITY_VERIFY))
1499 if (bio_data_dir(bio) == WRITE && bi->profile->generate_fn != NULL &&
1500 (bi->flags & BLK_INTEGRITY_GENERATE))