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.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/mdd/mdd_dir.c
38 * Lustre Metadata Server (mdd) routines
40 * Author: Wang Di <wangdi@intel.com>
43 #define DEBUG_SUBSYSTEM S_MDS
45 #include <obd_class.h>
46 #include <obd_support.h>
47 #include <lustre_mds.h>
48 #include <lustre_fid.h>
50 #include "mdd_internal.h"
52 static const char dot[] = ".";
53 static const char dotdot[] = "..";
55 static struct lu_name lname_dotdot = {
61 mdd_name_check(struct mdd_device *m, const struct lu_name *ln)
63 if (!lu_name_is_valid(ln))
65 else if (ln->ln_namelen > m->mdd_dt_conf.ddp_max_name_len)
71 /* Get FID from name and parent */
73 __mdd_lookup(const struct lu_env *env, struct md_object *pobj,
74 const struct lu_attr *pattr, const struct lu_name *lname,
75 struct lu_fid* fid, int mask)
77 const char *name = lname->ln_name;
78 const struct dt_key *key = (const struct dt_key *)name;
79 struct mdd_object *mdd_obj = md2mdd_obj(pobj);
80 struct mdd_device *m = mdo2mdd(pobj);
81 struct dt_object *dir = mdd_object_child(mdd_obj);
85 if (unlikely(mdd_is_dead_obj(mdd_obj)))
88 if (mdd_object_remote(mdd_obj)) {
89 CDEBUG(D_INFO, "%s: Object "DFID" locates on remote server\n",
90 mdd2obd_dev(m)->obd_name, PFID(mdo2fid(mdd_obj)));
91 } else if (!mdd_object_exists(mdd_obj)) {
95 rc = mdd_permission_internal_locked(env, mdd_obj, pattr, mask,
100 if (likely(S_ISDIR(mdd_object_type(mdd_obj)) &&
101 dt_try_as_dir(env, dir)))
102 rc = dt_lookup(env, dir, (struct dt_rec *)fid, key,
103 mdd_object_capa(env, mdd_obj));
110 int mdd_lookup(const struct lu_env *env,
111 struct md_object *pobj, const struct lu_name *lname,
112 struct lu_fid *fid, struct md_op_spec *spec)
114 struct lu_attr *pattr = MDD_ENV_VAR(env, pattr);
118 rc = mdd_la_get(env, md2mdd_obj(pobj), pattr, BYPASS_CAPA);
122 rc = __mdd_lookup(env, pobj, pattr, lname, fid, MAY_EXEC);
126 static inline int mdd_parent_fid(const struct lu_env *env,
127 struct mdd_object *obj,
128 const struct lu_attr *attr,
131 return __mdd_lookup(env, &obj->mod_obj, attr, &lname_dotdot, fid, 0);
135 * For root fid use special function, which does not compare version component
136 * of fid. Version component is different for root fids on all MDTs.
138 int mdd_is_root(struct mdd_device *mdd, const struct lu_fid *fid)
140 return fid_seq(&mdd->mdd_root_fid) == fid_seq(fid) &&
141 fid_oid(&mdd->mdd_root_fid) == fid_oid(fid);
145 * return 1: if lf is the fid of the ancestor of p1;
148 * return -EREMOTE: if remote object is found, in this
149 * case fid of remote object is saved to @pf;
151 * otherwise: values < 0, errors.
153 static int mdd_is_parent(const struct lu_env *env,
154 struct mdd_device *mdd,
155 struct mdd_object *p1,
156 const struct lu_attr *attr,
157 const struct lu_fid *lf,
160 struct mdd_object *parent = NULL;
165 LASSERT(!lu_fid_eq(mdo2fid(p1), lf));
166 pfid = &mdd_env_info(env)->mti_fid;
168 /* Check for root first. */
169 if (mdd_is_root(mdd, mdo2fid(p1)))
173 /* this is done recursively, bypass capa for each obj */
174 mdd_set_capainfo(env, 4, p1, BYPASS_CAPA);
175 rc = mdd_parent_fid(env, p1, attr, pfid);
178 if (mdd_is_root(mdd, pfid))
180 if (lu_fid_eq(pfid, &mdd->mdd_local_root_fid))
182 if (lu_fid_eq(pfid, lf))
185 mdd_object_put(env, parent);
187 parent = mdd_object_find(env, mdd, pfid);
188 if (IS_ERR(parent)) {
189 GOTO(out, rc = PTR_ERR(parent));
190 } else if (mdd_object_remote(parent)) {
191 /*FIXME: Because of the restriction of rename in Phase I.
192 * If the parent is remote, we just assumed lf is not the
193 * parent of P1 for now */
200 if (parent && !IS_ERR(parent))
201 mdd_object_put(env, parent);
206 * No permission check is needed.
208 * returns 1: if fid is ancestor of @mo;
209 * returns 0: if fid is not a ancestor of @mo;
211 * returns EREMOTE if remote object is found, fid of remote object is saved to
214 * returns < 0: if error
216 int mdd_is_subdir(const struct lu_env *env, struct md_object *mo,
217 const struct lu_fid *fid, struct lu_fid *sfid)
219 struct mdd_device *mdd = mdo2mdd(mo);
220 struct lu_attr *attr = MDD_ENV_VAR(env, cattr);
224 if (!S_ISDIR(mdd_object_type(md2mdd_obj(mo))))
227 rc = mdd_la_get(env, md2mdd_obj(mo), attr, BYPASS_CAPA);
231 rc = mdd_is_parent(env, mdd, md2mdd_obj(mo), attr, fid, sfid);
235 } else if (rc == 1) {
236 /* found @fid is parent */
244 * Check that @dir contains no entries except (possibly) dot and dotdot.
249 * -ENOTDIR not a directory object
250 * -ENOTEMPTY not empty
254 static int mdd_dir_is_empty(const struct lu_env *env,
255 struct mdd_object *dir)
258 struct dt_object *obj;
259 const struct dt_it_ops *iops;
263 obj = mdd_object_child(dir);
264 if (!dt_try_as_dir(env, obj))
267 iops = &obj->do_index_ops->dio_it;
268 it = iops->init(env, obj, LUDA_64BITHASH, BYPASS_CAPA);
270 result = iops->get(env, it, (const struct dt_key *)"");
273 for (result = 0, i = 0; result == 0 && i < 3; ++i)
274 result = iops->next(env, it);
277 else if (result == 1)
279 } else if (result == 0)
281 * Huh? Index contains no zero key?
288 result = PTR_ERR(it);
293 * Determine if the target object can be hard linked, and right now it only
294 * checks if the link count reach the maximum limit. Note: for ldiskfs, the
295 * directory nlink count might exceed the maximum link count(see
296 * osd_object_ref_add), so it only check nlink for non-directories.
298 * \param[in] env thread environment
299 * \param[in] obj object being linked to
300 * \param[in] la attributes of \a obj
302 * \retval 0 if \a obj can be hard linked
303 * \retval negative error if \a obj is a directory or has too
306 static int __mdd_may_link(const struct lu_env *env, struct mdd_object *obj,
307 const struct lu_attr *la)
309 struct mdd_device *m = mdd_obj2mdd_dev(obj);
314 /* Subdir count limitation can be broken through
315 * (see osd_object_ref_add), so only check non-directory here. */
316 if (!S_ISDIR(la->la_mode) &&
317 la->la_nlink >= m->mdd_dt_conf.ddp_max_nlink)
324 * Check whether it may create the cobj under the pobj.
326 * \param[in] env execution environment
327 * \param[in] pobj the parent directory
328 * \param[in] pattr the attribute of the parent directory
329 * \param[in] cobj the child to be created
330 * \param[in] check_perm if check WRITE|EXEC permission for parent
332 * \retval = 0 create the child under this dir is allowed
333 * \retval negative errno create the child under this dir is
336 int mdd_may_create(const struct lu_env *env, struct mdd_object *pobj,
337 const struct lu_attr *pattr, struct mdd_object *cobj,
340 struct mdd_thread_info *info = mdd_env_info(env);
345 if (cobj && mdd_object_exists(cobj))
348 if (mdd_is_dead_obj(pobj))
351 /* If the parent is a sub-stripe, check whether it is dead */
352 xbuf = mdd_buf_get(env, info->mti_key, sizeof(info->mti_key));
353 rc = mdo_xattr_get(env, pobj, xbuf, XATTR_NAME_LMV,
354 mdd_object_capa(env, pobj));
355 if (unlikely(rc > 0)) {
356 struct lmv_mds_md_v1 *lmv1 = xbuf->lb_buf;
358 if (le32_to_cpu(lmv1->lmv_magic) == LMV_MAGIC_STRIPE &&
359 le32_to_cpu(lmv1->lmv_hash_type) & LMV_HASH_FLAG_DEAD)
365 rc = mdd_permission_internal_locked(env, pobj, pattr,
366 MAY_WRITE | MAY_EXEC,
372 * Check whether can unlink from the pobj in the case of "cobj == NULL".
374 int mdd_may_unlink(const struct lu_env *env, struct mdd_object *pobj,
375 const struct lu_attr *pattr, const struct lu_attr *attr)
380 if (mdd_is_dead_obj(pobj))
383 if (attr->la_flags & (LUSTRE_APPEND_FL | LUSTRE_IMMUTABLE_FL))
386 rc = mdd_permission_internal_locked(env, pobj, pattr,
387 MAY_WRITE | MAY_EXEC,
392 if (pattr->la_flags & LUSTRE_APPEND_FL)
399 * pobj == NULL is remote ops case, under such case, pobj's
400 * VTX feature has been checked already, no need check again.
402 static inline int mdd_is_sticky(const struct lu_env *env,
403 struct mdd_object *pobj,
404 const struct lu_attr *pattr,
405 struct mdd_object *cobj,
406 const struct lu_attr *cattr)
408 struct lu_ucred *uc = lu_ucred_assert(env);
411 LASSERT(pattr != NULL);
412 if (!(pattr->la_mode & S_ISVTX) ||
413 (pattr->la_uid == uc->uc_fsuid))
417 LASSERT(cattr != NULL);
418 if (cattr->la_uid == uc->uc_fsuid)
421 return !md_capable(uc, CFS_CAP_FOWNER);
424 static int mdd_may_delete_entry(const struct lu_env *env,
425 struct mdd_object *pobj,
426 const struct lu_attr *pattr,
431 LASSERT(pobj != NULL);
432 if (!mdd_object_exists(pobj))
435 if (mdd_is_dead_obj(pobj))
440 rc = mdd_permission_internal_locked(env, pobj, pattr,
441 MAY_WRITE | MAY_EXEC,
447 if (pattr->la_flags & LUSTRE_APPEND_FL)
454 * Check whether it may delete the cobj from the pobj.
457 int mdd_may_delete(const struct lu_env *env, struct mdd_object *tpobj,
458 const struct lu_attr *tpattr, struct mdd_object *tobj,
459 const struct lu_attr *tattr, const struct lu_attr *cattr,
460 int check_perm, int check_empty)
466 LASSERT(tpattr != NULL);
467 rc = mdd_may_delete_entry(env, tpobj, tpattr, check_perm);
475 if (!mdd_object_exists(tobj))
478 if (mdd_is_dead_obj(tobj))
481 if (mdd_is_sticky(env, tpobj, tpattr, tobj, tattr))
484 if (tattr->la_flags & (LUSTRE_APPEND_FL | LUSTRE_IMMUTABLE_FL))
487 /* additional check the rename case */
489 if (S_ISDIR(cattr->la_mode)) {
490 struct mdd_device *mdd = mdo2mdd(&tobj->mod_obj);
492 if (!S_ISDIR(tattr->la_mode))
495 if (lu_fid_eq(mdo2fid(tobj), &mdd->mdd_root_fid))
497 } else if (S_ISDIR(tattr->la_mode))
501 if (S_ISDIR(tattr->la_mode) && check_empty)
502 rc = mdd_dir_is_empty(env, tobj);
508 * Check whether it can create the link file(linked to @src_obj) under
509 * the target directory(@tgt_obj), and src_obj has been locked by
512 * \param[in] env execution environment
513 * \param[in] tgt_obj the target directory
514 * \param[in] tattr attributes of target directory
515 * \param[in] lname the link name
516 * \param[in] src_obj source object for link
517 * \param[in] cattr attributes for source object
519 * \retval = 0 it is allowed to create the link file under tgt_obj
520 * \retval negative error not allowed to create the link file
522 static int mdd_link_sanity_check(const struct lu_env *env,
523 struct mdd_object *tgt_obj,
524 const struct lu_attr *tattr,
525 const struct lu_name *lname,
526 struct mdd_object *src_obj,
527 const struct lu_attr *cattr)
529 struct mdd_device *m = mdd_obj2mdd_dev(src_obj);
533 if (!mdd_object_exists(src_obj))
536 if (mdd_is_dead_obj(src_obj))
539 /* Local ops, no lookup before link, check filename length here. */
540 rc = mdd_name_check(m, lname);
544 if (cattr->la_flags & (LUSTRE_IMMUTABLE_FL | LUSTRE_APPEND_FL))
547 if (S_ISDIR(mdd_object_type(src_obj)))
550 LASSERT(src_obj != tgt_obj);
551 rc = mdd_may_create(env, tgt_obj, tattr, NULL, true);
555 rc = __mdd_may_link(env, src_obj, cattr);
560 static int __mdd_index_delete_only(const struct lu_env *env, struct mdd_object *pobj,
561 const char *name, struct thandle *handle,
562 struct lustre_capa *capa)
564 struct dt_object *next = mdd_object_child(pobj);
568 if (dt_try_as_dir(env, next))
569 rc = dt_delete(env, next, (struct dt_key *)name, handle, capa);
576 static int __mdd_index_insert_only(const struct lu_env *env,
577 struct mdd_object *pobj,
578 const struct lu_fid *lf, __u32 type,
580 struct thandle *handle,
581 struct lustre_capa *capa)
583 struct dt_object *next = mdd_object_child(pobj);
587 if (dt_try_as_dir(env, next)) {
588 struct dt_insert_rec *rec = &mdd_env_info(env)->mti_dt_rec;
589 struct lu_ucred *uc = lu_ucred_check(env);
593 rec->rec_type = type;
594 ignore_quota = uc ? uc->uc_cap & CFS_CAP_SYS_RESOURCE_MASK : 1;
595 rc = dt_insert(env, next, (const struct dt_rec *)rec,
596 (const struct dt_key *)name, handle, capa,
604 /* insert named index, add reference if isdir */
605 static int __mdd_index_insert(const struct lu_env *env, struct mdd_object *pobj,
606 const struct lu_fid *lf, __u32 type,
607 const char *name, struct thandle *handle,
608 struct lustre_capa *capa)
613 rc = __mdd_index_insert_only(env, pobj, lf, type, name, handle, capa);
614 if (rc == 0 && S_ISDIR(type)) {
615 mdd_write_lock(env, pobj, MOR_TGT_PARENT);
616 mdo_ref_add(env, pobj, handle);
617 mdd_write_unlock(env, pobj);
623 /* delete named index, drop reference if isdir */
624 static int __mdd_index_delete(const struct lu_env *env, struct mdd_object *pobj,
625 const char *name, int is_dir, struct thandle *handle,
626 struct lustre_capa *capa)
631 rc = __mdd_index_delete_only(env, pobj, name, handle, capa);
632 if (rc == 0 && is_dir) {
633 mdd_write_lock(env, pobj, MOR_TGT_PARENT);
634 mdo_ref_del(env, pobj, handle);
635 mdd_write_unlock(env, pobj);
641 static int mdd_llog_record_calc_size(const struct lu_env *env,
642 const struct lu_name *tname,
643 const struct lu_name *sname)
645 const struct lu_ucred *uc = lu_ucred(env);
646 enum changelog_rec_flags crf = 0;
647 size_t hdr_size = sizeof(struct llog_changelog_rec) -
648 sizeof(struct changelog_rec);
653 if (uc != NULL && uc->uc_jobid[0] != '\0')
656 return llog_data_len(hdr_size + changelog_rec_offset(crf) +
657 (tname != NULL ? tname->ln_namelen : 0) +
658 (sname != NULL ? 1 + sname->ln_namelen : 0));
661 int mdd_declare_changelog_store(const struct lu_env *env,
662 struct mdd_device *mdd,
663 const struct lu_name *tname,
664 const struct lu_name *sname,
665 struct thandle *handle)
667 struct obd_device *obd = mdd2obd_dev(mdd);
668 struct llog_ctxt *ctxt;
669 struct llog_changelog_rec *rec;
675 if (!(mdd->mdd_cl.mc_flags & CLM_ON))
678 reclen = mdd_llog_record_calc_size(env, tname, sname);
679 buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_big_buf, reclen);
680 if (buf->lb_buf == NULL)
684 rec->cr_hdr.lrh_len = reclen;
685 rec->cr_hdr.lrh_type = CHANGELOG_REC;
687 ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
691 rc = llog_declare_add(env, ctxt->loc_handle, &rec->cr_hdr, handle);
697 /** Add a changelog entry \a rec to the changelog llog
700 * \param handle - currently ignored since llogs start their own transaction;
701 * this will hopefully be fixed in llog rewrite
704 int mdd_changelog_store(const struct lu_env *env, struct mdd_device *mdd,
705 struct llog_changelog_rec *rec, struct thandle *th)
707 struct obd_device *obd = mdd2obd_dev(mdd);
708 struct llog_ctxt *ctxt;
711 rec->cr_hdr.lrh_len = llog_data_len(sizeof(*rec) +
712 changelog_rec_varsize(&rec->cr));
714 /* llog_lvfs_write_rec sets the llog tail len */
715 rec->cr_hdr.lrh_type = CHANGELOG_REC;
716 rec->cr.cr_time = cl_time();
718 spin_lock(&mdd->mdd_cl.mc_lock);
719 /* NB: I suppose it's possible llog_add adds out of order wrt cr_index,
720 * but as long as the MDD transactions are ordered correctly for e.g.
721 * rename conflicts, I don't think this should matter. */
722 rec->cr.cr_index = ++mdd->mdd_cl.mc_index;
723 spin_unlock(&mdd->mdd_cl.mc_lock);
725 ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
729 /* nested journal transaction */
730 rc = llog_add(env, ctxt->loc_handle, &rec->cr_hdr, NULL, th);
738 static void mdd_changelog_rec_ext_rename(struct changelog_rec *rec,
739 const struct lu_fid *sfid,
740 const struct lu_fid *spfid,
741 const struct lu_name *sname)
743 struct changelog_ext_rename *rnm = changelog_rec_rename(rec);
744 size_t extsize = sname->ln_namelen + 1;
746 LASSERT(sfid != NULL);
747 LASSERT(spfid != NULL);
748 LASSERT(sname != NULL);
750 rnm->cr_sfid = *sfid;
751 rnm->cr_spfid = *spfid;
753 changelog_rec_name(rec)[rec->cr_namelen] = '\0';
754 strlcpy(changelog_rec_sname(rec), sname->ln_name, extsize);
755 rec->cr_namelen += extsize;
758 void mdd_changelog_rec_ext_jobid(struct changelog_rec *rec, const char *jobid)
760 struct changelog_ext_jobid *jid = changelog_rec_jobid(rec);
762 if (jobid == NULL || jobid[0] == '\0')
765 strlcpy(jid->cr_jobid, jobid, sizeof(jid->cr_jobid));
768 /** Store a namespace change changelog record
769 * If this fails, we must fail the whole transaction; we don't
770 * want the change to commit without the log entry.
771 * \param target - mdd_object of change
772 * \param tpfid - target parent dir/object fid
773 * \param sfid - source object fid
774 * \param spfid - source parent fid
775 * \param tname - target name string
776 * \param sname - source name string
777 * \param handle - transacion handle
779 int mdd_changelog_ns_store(const struct lu_env *env,
780 struct mdd_device *mdd,
781 enum changelog_rec_type type,
782 enum changelog_rec_flags crf,
783 struct mdd_object *target,
784 const struct lu_fid *tpfid,
785 const struct lu_fid *sfid,
786 const struct lu_fid *spfid,
787 const struct lu_name *tname,
788 const struct lu_name *sname,
789 struct thandle *handle)
791 const struct lu_ucred *uc = lu_ucred(env);
792 struct llog_changelog_rec *rec;
799 if (!(mdd->mdd_cl.mc_flags & CLM_ON))
802 if ((mdd->mdd_cl.mc_mask & (1 << type)) == 0)
805 LASSERT(tpfid != NULL);
806 LASSERT(tname != NULL);
807 LASSERT(handle != NULL);
809 reclen = mdd_llog_record_calc_size(env, tname, sname);
810 buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_big_buf, reclen);
811 if (buf->lb_buf == NULL)
815 crf = (crf & CLF_FLAGMASK);
817 if (uc->uc_jobid[0] != '\0')
825 rec->cr.cr_flags = crf;
826 rec->cr.cr_type = (__u32)type;
827 rec->cr.cr_pfid = *tpfid;
828 rec->cr.cr_namelen = tname->ln_namelen;
829 memcpy(changelog_rec_name(&rec->cr), tname->ln_name, tname->ln_namelen);
831 if (crf & CLF_RENAME)
832 mdd_changelog_rec_ext_rename(&rec->cr, sfid, spfid, sname);
835 mdd_changelog_rec_ext_jobid(&rec->cr, uc->uc_jobid);
837 if (likely(target != NULL)) {
838 rec->cr.cr_tfid = *mdo2fid(target);
839 target->mod_cltime = cfs_time_current_64();
841 fid_zero(&rec->cr.cr_tfid);
844 rc = mdd_changelog_store(env, mdd, rec, handle);
846 CERROR("changelog failed: rc=%d, op%d %s c"DFID" p"DFID"\n",
847 rc, type, tname->ln_name, PFID(sfid), PFID(tpfid));
854 static int __mdd_links_add(const struct lu_env *env,
855 struct mdd_object *mdd_obj,
856 struct linkea_data *ldata,
857 const struct lu_name *lname,
858 const struct lu_fid *pfid,
859 int first, int check)
863 if (ldata->ld_leh == NULL) {
864 rc = first ? -ENODATA : mdd_links_read(env, mdd_obj, ldata);
868 rc = linkea_data_new(ldata,
869 &mdd_env_info(env)->mti_link_buf);
876 rc = linkea_links_find(ldata, lname, pfid);
877 if (rc && rc != -ENOENT)
883 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LINKEA_MORE)) {
884 struct lu_fid *tfid = &mdd_env_info(env)->mti_fid2;
888 linkea_add_buf(ldata, lname, tfid);
891 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LINKEA_MORE2))
892 linkea_add_buf(ldata, lname, pfid);
894 return linkea_add_buf(ldata, lname, pfid);
897 static int __mdd_links_del(const struct lu_env *env,
898 struct mdd_object *mdd_obj,
899 struct linkea_data *ldata,
900 const struct lu_name *lname,
901 const struct lu_fid *pfid)
905 if (ldata->ld_leh == NULL) {
906 rc = mdd_links_read(env, mdd_obj, ldata);
911 rc = linkea_links_find(ldata, lname, pfid);
915 linkea_del_buf(ldata, lname);
919 static int mdd_linkea_prepare(const struct lu_env *env,
920 struct mdd_object *mdd_obj,
921 const struct lu_fid *oldpfid,
922 const struct lu_name *oldlname,
923 const struct lu_fid *newpfid,
924 const struct lu_name *newlname,
925 int first, int check,
926 struct linkea_data *ldata)
932 if (OBD_FAIL_CHECK(OBD_FAIL_FID_IGIF))
935 LASSERT(oldpfid != NULL || newpfid != NULL);
937 if (mdd_obj->mod_flags & DEAD_OBJ) {
938 /* Prevent linkea to be updated which is NOT necessary. */
939 ldata->ld_reclen = 0;
940 /* No more links, don't bother */
944 if (oldpfid != NULL) {
945 rc = __mdd_links_del(env, mdd_obj, ldata, oldlname, oldpfid);
948 (rc != -ENODATA && rc != -ENOENT))
950 /* No changes done. */
955 /* If renaming, add the new record */
956 if (newpfid != NULL) {
957 /* even if the add fails, we still delete the out-of-date
959 rc2 = __mdd_links_add(env, mdd_obj, ldata, newlname, newpfid,
963 rc = rc != 0 ? rc : rc2;
968 int mdd_links_rename(const struct lu_env *env,
969 struct mdd_object *mdd_obj,
970 const struct lu_fid *oldpfid,
971 const struct lu_name *oldlname,
972 const struct lu_fid *newpfid,
973 const struct lu_name *newlname,
974 struct thandle *handle,
975 struct linkea_data *ldata,
976 int first, int check)
982 ldata = &mdd_env_info(env)->mti_link_data;
983 memset(ldata, 0, sizeof(*ldata));
984 rc = mdd_linkea_prepare(env, mdd_obj, oldpfid, oldlname,
985 newpfid, newlname, first, check,
991 if (ldata->ld_reclen != 0)
992 rc = mdd_links_write(env, mdd_obj, ldata, handle);
997 if (rc == -EOVERFLOW || rc == -ENOSPC)
1000 CDEBUG(error ? D_ERROR : D_OTHER,
1001 "link_ea add '%.*s' failed %d "DFID"\n",
1002 newlname->ln_namelen, newlname->ln_name,
1003 rc, PFID(mdd_object_fid(mdd_obj)));
1004 else if (newpfid == NULL)
1005 CDEBUG(error ? D_ERROR : D_OTHER,
1006 "link_ea del '%.*s' failed %d "DFID"\n",
1007 oldlname->ln_namelen, oldlname->ln_name,
1008 rc, PFID(mdd_object_fid(mdd_obj)));
1010 CDEBUG(error ? D_ERROR : D_OTHER,
1011 "link_ea rename '%.*s'->'%.*s' failed %d "
1013 oldlname->ln_namelen, oldlname->ln_name,
1014 newlname->ln_namelen, newlname->ln_name,
1015 rc, PFID(mdd_object_fid(mdd_obj)));
1018 if (ldata->ld_buf && ldata->ld_buf->lb_len > OBD_ALLOC_BIG)
1019 /* if we vmalloced a large buffer drop it */
1020 lu_buf_free(ldata->ld_buf);
1025 static inline int mdd_links_add(const struct lu_env *env,
1026 struct mdd_object *mdd_obj,
1027 const struct lu_fid *pfid,
1028 const struct lu_name *lname,
1029 struct thandle *handle,
1030 struct linkea_data *ldata, int first)
1032 return mdd_links_rename(env, mdd_obj, NULL, NULL,
1033 pfid, lname, handle, ldata, first, 0);
1036 static inline int mdd_links_del(const struct lu_env *env,
1037 struct mdd_object *mdd_obj,
1038 const struct lu_fid *pfid,
1039 const struct lu_name *lname,
1040 struct thandle *handle)
1042 return mdd_links_rename(env, mdd_obj, pfid, lname,
1043 NULL, NULL, handle, NULL, 0, 0);
1046 /** Read the link EA into a temp buffer.
1047 * Uses the mdd_thread_info::mti_big_buf since it is generally large.
1048 * A pointer to the buffer is stored in \a ldata::ld_buf.
1050 * \retval 0 or error
1052 int mdd_links_read(const struct lu_env *env, struct mdd_object *mdd_obj,
1053 struct linkea_data *ldata)
1057 if (!mdd_object_exists(mdd_obj))
1060 /* First try a small buf */
1061 LASSERT(env != NULL);
1062 ldata->ld_buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_link_buf,
1064 if (ldata->ld_buf->lb_buf == NULL)
1067 rc = mdo_xattr_get(env, mdd_obj, ldata->ld_buf, XATTR_NAME_LINK,
1069 if (rc == -ERANGE) {
1070 /* Buf was too small, figure out what we need. */
1071 lu_buf_free(ldata->ld_buf);
1072 rc = mdo_xattr_get(env, mdd_obj, ldata->ld_buf,
1073 XATTR_NAME_LINK, BYPASS_CAPA);
1076 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
1077 if (ldata->ld_buf->lb_buf == NULL)
1079 rc = mdo_xattr_get(env, mdd_obj, ldata->ld_buf,
1080 XATTR_NAME_LINK, BYPASS_CAPA);
1083 lu_buf_free(ldata->ld_buf);
1084 ldata->ld_buf = NULL;
1088 return linkea_init(ldata);
1091 /** Read the link EA into a temp buffer.
1092 * Uses the name_buf since it is generally large.
1093 * \retval IS_ERR err
1094 * \retval ptr to \a lu_buf (always \a mti_big_buf)
1096 struct lu_buf *mdd_links_get(const struct lu_env *env,
1097 struct mdd_object *mdd_obj)
1099 struct linkea_data ldata = { 0 };
1102 rc = mdd_links_read(env, mdd_obj, &ldata);
1103 return rc ? ERR_PTR(rc) : ldata.ld_buf;
1106 int mdd_links_write(const struct lu_env *env, struct mdd_object *mdd_obj,
1107 struct linkea_data *ldata, struct thandle *handle)
1109 const struct lu_buf *buf = mdd_buf_get_const(env, ldata->ld_buf->lb_buf,
1110 ldata->ld_leh->leh_len);
1113 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NO_LINKEA))
1116 rc = mdo_xattr_set(env, mdd_obj, buf, XATTR_NAME_LINK, 0, handle,
1117 mdd_object_capa(env, mdd_obj));
1118 if (unlikely(rc == -ENOSPC) && S_ISREG(mdd_object_type(mdd_obj)) &&
1119 mdd_object_remote(mdd_obj) == 0) {
1120 struct lfsck_request *lr = &mdd_env_info(env)->mti_lr;
1122 /* XXX: If the linkEA is overflow, then we need to notify the
1123 * namespace LFSCK to skip "nlink" attribute verification
1124 * on this object to avoid the "nlink" to be shrinked by
1125 * wrong. It may be not good an interaction with LFSCK
1126 * like this. We will consider to replace it with other
1127 * mechanism in future. LU-5802. */
1128 lfsck_pack_rfa(lr, mdo2fid(mdd_obj), LE_SKIP_NLINK,
1129 LFSCK_TYPE_NAMESPACE);
1130 lfsck_in_notify(env, mdo2mdd(&mdd_obj->mod_obj)->mdd_bottom,
1137 int mdd_declare_links_add(const struct lu_env *env, struct mdd_object *mdd_obj,
1138 struct thandle *handle, struct linkea_data *ldata,
1139 enum mdd_links_add_overflow overflow)
1145 if (ldata != NULL && ldata->ld_leh != NULL) {
1146 ea_len = ldata->ld_leh->leh_len;
1147 linkea = ldata->ld_buf->lb_buf;
1149 ea_len = DEFAULT_LINKEA_SIZE;
1153 /* XXX: max size? */
1154 rc = mdo_declare_xattr_set(env, mdd_obj,
1155 mdd_buf_get_const(env, linkea, ea_len),
1156 XATTR_NAME_LINK, 0, handle);
1160 if (mdd_object_remote(mdd_obj) == 0 && overflow == MLAO_CHECK) {
1161 struct lfsck_request *lr = &mdd_env_info(env)->mti_lr;
1163 /* XXX: If the linkEA is overflow, then we need to notify the
1164 * namespace LFSCK to skip "nlink" attribute verification
1165 * on this object to avoid the "nlink" to be shrinked by
1166 * wrong. It may be not good an interaction with LFSCK
1167 * like this. We will consider to replace it with other
1168 * mechanism in future. LU-5802. */
1169 lfsck_pack_rfa(lr, mdo2fid(mdd_obj), LE_SKIP_NLINK_DECLARE,
1170 LFSCK_TYPE_NAMESPACE);
1171 rc = lfsck_in_notify(env,
1172 mdo2mdd(&mdd_obj->mod_obj)->mdd_bottom,
1179 static inline int mdd_declare_links_del(const struct lu_env *env,
1180 struct mdd_object *c,
1181 struct thandle *handle)
1185 /* For directory, the linkEA will be removed together
1186 * with the object. */
1187 if (!S_ISDIR(mdd_object_type(c)))
1188 rc = mdd_declare_links_add(env, c, handle, NULL, MLAO_IGNORE);
1193 static int mdd_declare_link(const struct lu_env *env,
1194 struct mdd_device *mdd,
1195 struct mdd_object *p,
1196 struct mdd_object *c,
1197 const struct lu_name *name,
1198 struct thandle *handle,
1200 struct linkea_data *data)
1204 rc = mdo_declare_index_insert(env, p, mdo2fid(c), mdd_object_type(c),
1205 name->ln_name, handle);
1209 rc = mdo_declare_ref_add(env, c, handle);
1213 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_MORE_NLINK)) {
1214 rc = mdo_declare_ref_add(env, c, handle);
1219 la->la_valid = LA_CTIME | LA_MTIME;
1220 rc = mdo_declare_attr_set(env, p, la, handle);
1224 la->la_valid = LA_CTIME;
1225 rc = mdo_declare_attr_set(env, c, la, handle);
1229 rc = mdd_declare_links_add(env, c, handle, data,
1230 S_ISREG(mdd_object_type(c)) ? MLAO_CHECK : MLAO_IGNORE);
1234 rc = mdd_declare_changelog_store(env, mdd, name, NULL, handle);
1239 static int mdd_link(const struct lu_env *env, struct md_object *tgt_obj,
1240 struct md_object *src_obj, const struct lu_name *lname,
1243 const char *name = lname->ln_name;
1244 struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix;
1245 struct mdd_object *mdd_tobj = md2mdd_obj(tgt_obj);
1246 struct mdd_object *mdd_sobj = md2mdd_obj(src_obj);
1247 struct lu_attr *cattr = MDD_ENV_VAR(env, cattr);
1248 struct lu_attr *tattr = MDD_ENV_VAR(env, tattr);
1249 struct mdd_device *mdd = mdo2mdd(src_obj);
1250 struct thandle *handle;
1251 struct linkea_data *ldata = &mdd_env_info(env)->mti_link_data;
1255 rc = mdd_la_get(env, mdd_sobj, cattr, BYPASS_CAPA);
1259 rc = mdd_la_get(env, mdd_tobj, tattr, BYPASS_CAPA);
1263 handle = mdd_trans_create(env, mdd);
1265 GOTO(out_pending, rc = PTR_ERR(handle));
1267 memset(ldata, 0, sizeof(*ldata));
1269 LASSERT(ma->ma_attr.la_valid & LA_CTIME);
1270 la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime;
1272 rc = mdd_declare_link(env, mdd, mdd_tobj, mdd_sobj, lname, handle,
1277 rc = mdd_trans_start(env, mdd, handle);
1281 mdd_write_lock(env, mdd_sobj, MOR_TGT_CHILD);
1282 rc = mdd_link_sanity_check(env, mdd_tobj, tattr, lname, mdd_sobj,
1285 GOTO(out_unlock, rc);
1287 if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LESS_NLINK)) {
1288 rc = mdo_ref_add(env, mdd_sobj, handle);
1290 GOTO(out_unlock, rc);
1293 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_MORE_NLINK)) {
1294 rc = mdo_ref_add(env, mdd_sobj, handle);
1296 GOTO(out_unlock, rc);
1299 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DANGLING3)) {
1300 struct lu_fid tfid = *mdo2fid(mdd_sobj);
1303 rc = __mdd_index_insert_only(env, mdd_tobj, &tfid,
1304 mdd_object_type(mdd_sobj),
1306 mdd_object_capa(env, mdd_tobj));
1308 rc = __mdd_index_insert_only(env, mdd_tobj, mdo2fid(mdd_sobj),
1309 mdd_object_type(mdd_sobj),
1311 mdd_object_capa(env, mdd_tobj));
1315 mdo_ref_del(env, mdd_sobj, handle);
1316 GOTO(out_unlock, rc);
1319 la->la_valid = LA_CTIME | LA_MTIME;
1320 rc = mdd_update_time(env, mdd_tobj, tattr, la, handle);
1322 GOTO(out_unlock, rc);
1324 la->la_valid = LA_CTIME;
1325 rc = mdd_update_time(env, mdd_sobj, cattr, la, handle);
1327 rc = mdd_linkea_prepare(env, mdd_sobj, NULL, NULL,
1328 mdo2fid(mdd_tobj), lname, 0, 0,
1331 mdd_links_add(env, mdd_sobj, mdo2fid(mdd_tobj),
1332 lname, handle, ldata, 0);
1333 /* The failure of links_add should not cause the link
1334 * failure, reset rc here */
1339 mdd_write_unlock(env, mdd_sobj);
1341 rc = mdd_changelog_ns_store(env, mdd, CL_HARDLINK, 0, mdd_sobj,
1342 mdo2fid(mdd_tobj), NULL, NULL,
1343 lname, NULL, handle);
1345 mdd_trans_stop(env, mdd, rc, handle);
1347 if (ldata->ld_buf && ldata->ld_buf->lb_len > OBD_ALLOC_BIG)
1348 /* if we vmalloced a large buffer drop it */
1349 lu_buf_free(ldata->ld_buf);
1354 static int mdd_mark_dead_object(const struct lu_env *env,
1355 struct mdd_object *obj, struct thandle *handle,
1358 struct lu_attr *attr = MDD_ENV_VAR(env, la_for_start);
1362 obj->mod_flags |= DEAD_OBJ;
1364 if (!S_ISDIR(mdd_object_type(obj)))
1367 attr->la_valid = LA_FLAGS;
1368 attr->la_flags = LUSTRE_SLAVE_DEAD_FL;
1371 rc = mdo_declare_attr_set(env, obj, attr, handle);
1373 rc = mdo_attr_set(env, obj, attr, handle,
1374 mdd_object_capa(env, obj));
1379 static int mdd_declare_finish_unlink(const struct lu_env *env,
1380 struct mdd_object *obj,
1381 struct thandle *handle)
1385 rc = mdd_mark_dead_object(env, obj, handle, true);
1389 rc = orph_declare_index_insert(env, obj, mdd_object_type(obj), handle);
1393 rc = mdo_declare_destroy(env, obj, handle);
1397 return mdd_declare_links_del(env, obj, handle);
1400 /* caller should take a lock before calling */
1401 int mdd_finish_unlink(const struct lu_env *env,
1402 struct mdd_object *obj, struct md_attr *ma,
1403 const struct mdd_object *pobj,
1404 const struct lu_name *lname,
1408 int is_dir = S_ISDIR(ma->ma_attr.la_mode);
1411 LASSERT(mdd_write_locked(env, obj) != 0);
1413 if (ma->ma_attr.la_nlink == 0 || is_dir) {
1414 rc = mdd_mark_dead_object(env, obj, th, false);
1418 /* add new orphan and the object
1419 * will be deleted during mdd_close() */
1420 if (obj->mod_count) {
1421 rc = __mdd_orphan_add(env, obj, th);
1423 CDEBUG(D_HA, "Object "DFID" is inserted into "
1424 "orphan list, open count = %d\n",
1425 PFID(mdd_object_fid(obj)),
1428 CERROR("Object "DFID" fail to be an orphan, "
1429 "open count = %d, maybe cause failed "
1431 PFID(mdd_object_fid(obj)),
1434 rc = mdo_destroy(env, obj, th);
1436 } else if (!is_dir) {
1437 /* old files may not have link ea; ignore errors */
1438 mdd_links_del(env, obj, mdo2fid(pobj), lname, th);
1446 * has mdd_write_lock on cobj already, but not on pobj yet
1448 int mdd_unlink_sanity_check(const struct lu_env *env, struct mdd_object *pobj,
1449 const struct lu_attr *pattr,
1450 struct mdd_object *cobj,
1451 const struct lu_attr *cattr)
1456 rc = mdd_may_delete(env, pobj, pattr, cobj, cattr, NULL, 1, 1);
1461 static int mdd_declare_unlink(const struct lu_env *env, struct mdd_device *mdd,
1462 struct mdd_object *p, struct mdd_object *c,
1463 const struct lu_name *name, struct md_attr *ma,
1464 struct thandle *handle, int no_name, int is_dir)
1466 struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix;
1469 if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DANGLING2)) {
1470 if (likely(no_name == 0)) {
1471 rc = mdo_declare_index_delete(env, p, name->ln_name,
1478 rc = mdo_declare_ref_del(env, p, handle);
1484 LASSERT(ma->ma_attr.la_valid & LA_CTIME);
1485 la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime;
1486 la->la_valid = LA_CTIME | LA_MTIME;
1487 rc = mdo_declare_attr_set(env, p, la, handle);
1492 rc = mdo_declare_ref_del(env, c, handle);
1496 rc = mdo_declare_ref_del(env, c, handle);
1500 la->la_valid = LA_CTIME;
1501 rc = mdo_declare_attr_set(env, c, la, handle);
1505 rc = mdd_declare_finish_unlink(env, c, handle);
1509 /* FIXME: need changelog for remove entry */
1510 rc = mdd_declare_changelog_store(env, mdd, name, NULL, handle);
1517 * test if a file has an HSM archive
1518 * if HSM attributes are not found in ma update them from
1521 static bool mdd_hsm_archive_exists(const struct lu_env *env,
1522 struct mdd_object *obj,
1527 if (!(ma->ma_valid & MA_HSM)) {
1528 /* no HSM MD provided, read xattr */
1529 struct lu_buf *hsm_buf;
1530 const size_t buflen = sizeof(struct hsm_attrs);
1533 hsm_buf = mdd_buf_get(env, NULL, 0);
1534 lu_buf_alloc(hsm_buf, buflen);
1535 rc = mdo_xattr_get(env, obj, hsm_buf, XATTR_NAME_HSM,
1536 mdd_object_capa(env, obj));
1537 rc = lustre_buf2hsm(hsm_buf->lb_buf, rc, &ma->ma_hsm);
1538 lu_buf_free(hsm_buf);
1542 ma->ma_valid = MA_HSM;
1544 if (ma->ma_hsm.mh_flags & HS_EXISTS)
1550 * Delete name entry and the object.
1551 * Note: no_name == 1 means it only destory the object, i.e. name_entry
1552 * does not exist for this object, and it could only happen during resending
1553 * of remote unlink. see the comments in mdt_reint_unlink. Unfortunately, lname
1554 * is also needed in this case(needed by changelog), so we have to add another
1555 * parameter(no_name)here. XXX: this is only needed in DNE phase I, on Phase II,
1556 * the ENOENT failure should be able to be fixed by redo mechanism.
1558 static int mdd_unlink(const struct lu_env *env, struct md_object *pobj,
1559 struct md_object *cobj, const struct lu_name *lname,
1560 struct md_attr *ma, int no_name)
1562 const char *name = lname->ln_name;
1563 struct lu_attr *pattr = MDD_ENV_VAR(env, pattr);
1564 struct lu_attr *cattr = MDD_ENV_VAR(env, cattr);
1565 struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix;
1566 struct mdd_object *mdd_pobj = md2mdd_obj(pobj);
1567 struct mdd_object *mdd_cobj = NULL;
1568 struct mdd_device *mdd = mdo2mdd(pobj);
1569 struct thandle *handle;
1573 /* cobj == NULL means only delete name entry */
1574 if (likely(cobj != NULL)) {
1575 mdd_cobj = md2mdd_obj(cobj);
1576 if (mdd_object_exists(mdd_cobj) == 0)
1580 rc = mdd_la_get(env, mdd_pobj, pattr, BYPASS_CAPA);
1584 if (likely(mdd_cobj != NULL)) {
1586 rc = mdd_la_get(env, mdd_cobj, cattr, BYPASS_CAPA);
1590 is_dir = S_ISDIR(cattr->la_mode);
1593 rc = mdd_unlink_sanity_check(env, mdd_pobj, pattr, mdd_cobj, cattr);
1597 handle = mdd_trans_create(env, mdd);
1599 RETURN(PTR_ERR(handle));
1601 rc = mdd_declare_unlink(env, mdd, mdd_pobj, mdd_cobj,
1602 lname, ma, handle, no_name, is_dir);
1606 rc = mdd_trans_start(env, mdd, handle);
1610 if (likely(mdd_cobj != NULL))
1611 mdd_write_lock(env, mdd_cobj, MOR_TGT_CHILD);
1613 if (likely(no_name == 0) && !OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DANGLING2)) {
1614 rc = __mdd_index_delete(env, mdd_pobj, name, is_dir, handle,
1615 mdd_object_capa(env, mdd_pobj));
1620 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_MUL_REF) ||
1621 OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NO_NAMEENTRY))
1622 GOTO(cleanup, rc = 0);
1624 if (likely(mdd_cobj != NULL)) {
1625 rc = mdo_ref_del(env, mdd_cobj, handle);
1627 __mdd_index_insert_only(env, mdd_pobj,
1629 mdd_object_type(mdd_cobj),
1631 mdd_object_capa(env, mdd_pobj));
1637 mdo_ref_del(env, mdd_cobj, handle);
1639 /* fetch updated nlink */
1640 rc = mdd_la_get(env, mdd_cobj, cattr, BYPASS_CAPA);
1645 LASSERT(ma->ma_attr.la_valid & LA_CTIME);
1646 la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime;
1648 la->la_valid = LA_CTIME | LA_MTIME;
1649 rc = mdd_update_time(env, mdd_pobj, pattr, la, handle);
1653 /* Enough for only unlink the entry */
1654 if (unlikely(mdd_cobj == NULL))
1657 if (cattr->la_nlink > 0 || mdd_cobj->mod_count > 0) {
1658 /* update ctime of an unlinked file only if it is still
1659 * opened or a link still exists */
1660 la->la_valid = LA_CTIME;
1661 rc = mdd_update_time(env, mdd_cobj, cattr, la, handle);
1666 /* XXX: this transfer to ma will be removed with LOD/OSP */
1667 ma->ma_attr = *cattr;
1668 ma->ma_valid |= MA_INODE;
1669 rc = mdd_finish_unlink(env, mdd_cobj, ma, mdd_pobj, lname, handle);
1671 /* fetch updated nlink */
1673 rc = mdd_la_get(env, mdd_cobj, cattr, BYPASS_CAPA);
1675 /* if object is removed then we can't get its attrs, use last get */
1676 if (cattr->la_nlink == 0) {
1677 ma->ma_attr = *cattr;
1678 ma->ma_valid |= MA_INODE;
1682 if (likely(mdd_cobj != NULL))
1683 mdd_write_unlock(env, mdd_cobj);
1688 if (cattr->la_nlink == 0) {
1689 cl_flags |= CLF_UNLINK_LAST;
1690 /* search for an existing archive */
1691 if (mdd_hsm_archive_exists(env, mdd_cobj, ma))
1692 cl_flags |= CLF_UNLINK_HSM_EXISTS;
1695 rc = mdd_changelog_ns_store(env, mdd,
1696 is_dir ? CL_RMDIR : CL_UNLINK, cl_flags,
1697 mdd_cobj, mdo2fid(mdd_pobj), NULL, NULL, lname, NULL,
1702 mdd_trans_stop(env, mdd, rc, handle);
1708 * The permission has been checked when obj created, no need check again.
1710 static int mdd_cd_sanity_check(const struct lu_env *env,
1711 struct mdd_object *obj)
1716 if (!obj || mdd_is_dead_obj(obj))
1722 static int mdd_create_data(const struct lu_env *env, struct md_object *pobj,
1723 struct md_object *cobj, const struct md_op_spec *spec,
1726 struct mdd_device *mdd = mdo2mdd(cobj);
1727 struct mdd_object *mdd_pobj = md2mdd_obj(pobj);
1728 struct mdd_object *son = md2mdd_obj(cobj);
1729 struct thandle *handle;
1730 const struct lu_buf *buf;
1731 struct lu_attr *attr = MDD_ENV_VAR(env, cattr);
1732 struct dt_allocation_hint *hint = &mdd_env_info(env)->mti_hint;
1736 rc = mdd_cd_sanity_check(env, son);
1740 if (!md_should_create(spec->sp_cr_flags))
1744 * there are following use cases for this function:
1745 * 1) late striping - file was created with MDS_OPEN_DELAY_CREATE
1746 * striping can be specified or not
1749 rc = mdd_la_get(env, son, attr, BYPASS_CAPA);
1753 /* calling ->ah_make_hint() is used to transfer information from parent */
1754 mdd_object_make_hint(env, mdd_pobj, son, attr, spec, hint);
1756 handle = mdd_trans_create(env, mdd);
1758 GOTO(out_free, rc = PTR_ERR(handle));
1761 * XXX: Setting the lov ea is not locked but setting the attr is locked?
1762 * Should this be fixed?
1764 CDEBUG(D_OTHER, "ea %p/%u, cr_flags "LPO64", no_create %u\n",
1765 spec->u.sp_ea.eadata, spec->u.sp_ea.eadatalen,
1766 spec->sp_cr_flags, spec->no_create);
1768 if (spec->no_create || (spec->sp_cr_flags & MDS_OPEN_HAS_EA)) {
1769 buf = mdd_buf_get_const(env, spec->u.sp_ea.eadata,
1770 spec->u.sp_ea.eadatalen);
1775 rc = dt_declare_xattr_set(env, mdd_object_child(son), buf,
1776 XATTR_NAME_LOV, 0, handle);
1780 rc = mdd_declare_changelog_store(env, mdd, NULL, NULL, handle);
1784 rc = mdd_trans_start(env, mdd, handle);
1788 rc = dt_xattr_set(env, mdd_object_child(son), buf, XATTR_NAME_LOV,
1789 0, handle, mdd_object_capa(env, son));
1794 rc = mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, son, handle);
1797 mdd_trans_stop(env, mdd, rc, handle);
1802 static int mdd_declare_object_initialize(const struct lu_env *env,
1803 struct mdd_object *parent,
1804 struct mdd_object *child,
1805 struct lu_attr *attr,
1806 struct thandle *handle)
1812 * inode mode has been set in creation time, and it's based on umask,
1813 * la_mode and acl, don't set here again! (which will go wrong
1814 * because below function doesn't consider umask).
1815 * I'd suggest set all object attributes in creation time, see above.
1817 LASSERT(attr->la_valid & (LA_MODE | LA_TYPE));
1818 attr->la_valid &= ~(LA_MODE | LA_TYPE);
1819 rc = mdo_declare_attr_set(env, child, attr, handle);
1820 attr->la_valid |= LA_MODE | LA_TYPE;
1821 if (rc != 0 || !S_ISDIR(attr->la_mode))
1824 rc = mdo_declare_index_insert(env, child, mdo2fid(child), S_IFDIR,
1829 rc = mdo_declare_ref_add(env, child, handle);
1833 rc = mdo_declare_index_insert(env, child, mdo2fid(parent), S_IFDIR,
1839 static int mdd_object_initialize(const struct lu_env *env,
1840 const struct lu_fid *pfid,
1841 struct mdd_object *child,
1842 struct lu_attr *attr, struct thandle *handle,
1843 const struct md_op_spec *spec)
1848 if (S_ISDIR(attr->la_mode)) {
1849 /* Add "." and ".." for newly created dir */
1850 mdo_ref_add(env, child, handle);
1851 rc = __mdd_index_insert_only(env, child, mdo2fid(child),
1852 S_IFDIR, dot, handle, BYPASS_CAPA);
1854 rc = __mdd_index_insert_only(env, child, pfid, S_IFDIR,
1858 mdo_ref_del(env, child, handle);
1865 * This function checks whether it can create a file/dir under the
1866 * directory(@pobj). The directory(@pobj) is not being locked by
1869 * \param[in] env execution environment
1870 * \param[in] pobj the directory to create files
1871 * \param[in] pattr the attributes of the directory
1872 * \param[in] lname the name of the created file/dir
1873 * \param[in] cattr the attributes of the file/dir
1874 * \param[in] spec create specification
1876 * \retval = 0 it is allowed to create file/dir under
1878 * \retval negative error not allowed to create file/dir
1879 * under the directory
1881 static int mdd_create_sanity_check(const struct lu_env *env,
1882 struct md_object *pobj,
1883 const struct lu_attr *pattr,
1884 const struct lu_name *lname,
1885 struct lu_attr *cattr,
1886 struct md_op_spec *spec)
1888 struct mdd_thread_info *info = mdd_env_info(env);
1889 struct lu_fid *fid = &info->mti_fid;
1890 struct mdd_object *obj = md2mdd_obj(pobj);
1891 struct mdd_device *m = mdo2mdd(pobj);
1892 bool check_perm = true;
1897 if (mdd_is_dead_obj(obj))
1901 * In some cases this lookup is not needed - we know before if name
1902 * exists or not because MDT performs lookup for it.
1903 * name length check is done in lookup.
1905 if (spec->sp_cr_lookup) {
1907 * Check if the name already exist, though it will be checked in
1908 * _index_insert also, for avoiding rolling back if exists
1911 rc = __mdd_lookup(env, pobj, pattr, lname, fid,
1912 MAY_WRITE | MAY_EXEC);
1914 RETURN(rc ? : -EEXIST);
1916 /* Permission is already being checked in mdd_lookup */
1920 rc = mdd_may_create(env, obj, pattr, NULL, check_perm);
1925 if (pattr->la_mode & S_ISGID) {
1926 cattr->la_gid = pattr->la_gid;
1927 if (S_ISDIR(cattr->la_mode)) {
1928 cattr->la_mode |= S_ISGID;
1929 cattr->la_valid |= LA_MODE;
1933 rc = mdd_name_check(m, lname);
1937 switch (cattr->la_mode & S_IFMT) {
1939 unsigned int symlen = strlen(spec->u.sp_symname) + 1;
1941 if (symlen > (1 << m->mdd_dt_conf.ddp_block_shift))
1942 RETURN(-ENAMETOOLONG);
1961 static int mdd_declare_object_create(const struct lu_env *env,
1962 struct mdd_device *mdd,
1963 struct mdd_object *p, struct mdd_object *c,
1964 struct lu_attr *attr,
1965 struct thandle *handle,
1966 const struct md_op_spec *spec,
1967 struct lu_buf *def_acl_buf,
1968 struct lu_buf *acl_buf,
1969 struct dt_allocation_hint *hint)
1973 rc = mdd_declare_object_create_internal(env, p, c, attr, handle, spec,
1978 #ifdef CONFIG_FS_POSIX_ACL
1979 if (def_acl_buf->lb_len > 0 && S_ISDIR(attr->la_mode)) {
1980 /* if dir, then can inherit default ACl */
1981 rc = mdo_declare_xattr_set(env, c, def_acl_buf,
1982 XATTR_NAME_ACL_DEFAULT,
1988 if (acl_buf->lb_len > 0) {
1989 rc = mdo_declare_attr_set(env, c, attr, handle);
1993 rc = mdo_declare_xattr_set(env, c, acl_buf,
1994 XATTR_NAME_ACL_ACCESS, 0, handle);
1999 rc = mdd_declare_object_initialize(env, p, c, attr, handle);
2003 /* replay case, create LOV EA from client data */
2004 if (spec->no_create ||
2005 (spec->sp_cr_flags & MDS_OPEN_HAS_EA && S_ISREG(attr->la_mode))) {
2006 const struct lu_buf *buf;
2008 buf = mdd_buf_get_const(env, spec->u.sp_ea.eadata,
2009 spec->u.sp_ea.eadatalen);
2010 rc = mdo_declare_xattr_set(env, c, buf, XATTR_NAME_LOV, 0,
2016 if (S_ISLNK(attr->la_mode)) {
2017 const char *target_name = spec->u.sp_symname;
2018 int sym_len = strlen(target_name);
2019 const struct lu_buf *buf;
2021 buf = mdd_buf_get_const(env, target_name, sym_len);
2022 rc = dt_declare_record_write(env, mdd_object_child(c),
2031 static int mdd_declare_create(const struct lu_env *env, struct mdd_device *mdd,
2032 struct mdd_object *p, struct mdd_object *c,
2033 const struct lu_name *name,
2034 struct lu_attr *attr,
2035 struct thandle *handle,
2036 const struct md_op_spec *spec,
2037 struct linkea_data *ldata,
2038 struct lu_buf *def_acl_buf,
2039 struct lu_buf *acl_buf,
2040 struct dt_allocation_hint *hint)
2044 rc = mdd_declare_object_create(env, mdd, p, c, attr, handle, spec,
2045 def_acl_buf, acl_buf, hint);
2049 if (S_ISDIR(attr->la_mode)) {
2050 rc = mdo_declare_ref_add(env, p, handle);
2055 if (unlikely(spec->sp_cr_flags & MDS_OPEN_VOLATILE)) {
2056 rc = orph_declare_index_insert(env, c, attr->la_mode, handle);
2060 struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix;
2062 rc = mdo_declare_index_insert(env, p, mdo2fid(c), attr->la_mode,
2063 name->ln_name, handle);
2067 rc = mdd_declare_links_add(env, c, handle, ldata, MLAO_IGNORE);
2072 la->la_valid = LA_CTIME | LA_MTIME;
2073 rc = mdo_declare_attr_set(env, p, la, handle);
2077 rc = mdd_declare_changelog_store(env, mdd, name, NULL, handle);
2082 /* XXX: For remote create, it should indicate the remote RPC
2083 * will be sent after local transaction is finished, which
2084 * is not very nice, but it will be removed once we fully support
2086 if (mdd_object_remote(p) && handle->th_update != NULL)
2087 handle->th_update->tu_sent_after_local_trans = 1;
2092 static int mdd_acl_init(const struct lu_env *env, struct mdd_object *pobj,
2093 struct lu_attr *la, struct lu_buf *def_acl_buf,
2094 struct lu_buf *acl_buf)
2099 if (S_ISLNK(la->la_mode)) {
2100 acl_buf->lb_len = 0;
2101 def_acl_buf->lb_len = 0;
2105 mdd_read_lock(env, pobj, MOR_TGT_PARENT);
2106 rc = mdo_xattr_get(env, pobj, def_acl_buf,
2107 XATTR_NAME_ACL_DEFAULT, BYPASS_CAPA);
2108 mdd_read_unlock(env, pobj);
2110 /* If there are default ACL, fix mode/ACL by default ACL */
2111 def_acl_buf->lb_len = rc;
2112 LASSERT(def_acl_buf->lb_len <= acl_buf->lb_len);
2113 memcpy(acl_buf->lb_buf, def_acl_buf->lb_buf, rc);
2114 acl_buf->lb_len = rc;
2115 rc = __mdd_fix_mode_acl(env, acl_buf, &la->la_mode);
2118 } else if (rc == -ENODATA || rc == -EOPNOTSUPP) {
2119 /* If there are no default ACL, fix mode by mask */
2120 struct lu_ucred *uc = lu_ucred(env);
2122 /* The create triggered by MDT internal events, such as
2123 * LFSCK reset, will not contain valid "uc". */
2124 if (unlikely(uc != NULL))
2125 la->la_mode &= ~uc->uc_umask;
2127 acl_buf->lb_len = 0;
2128 def_acl_buf->lb_len = 0;
2135 * Create a metadata object and initialize it, set acl, xattr.
2137 static int mdd_object_create(const struct lu_env *env, struct mdd_object *pobj,
2138 struct mdd_object *son, struct lu_attr *attr,
2139 struct md_op_spec *spec, struct lu_buf *acl_buf,
2140 struct lu_buf *def_acl_buf,
2141 struct dt_allocation_hint *hint,
2142 struct thandle *handle)
2146 mdd_write_lock(env, son, MOR_TGT_CHILD);
2147 rc = mdd_object_create_internal(env, NULL, son, attr, handle, spec,
2152 /* Note: In DNE phase I, for striped dir, though sub-stripes will be
2153 * created in declare phase, they also needs to be added to master
2154 * object as sub-directory entry. So it has to initialize the master
2155 * object, then set dir striped EA.(in mdo_xattr_set) */
2156 rc = mdd_object_initialize(env, mdo2fid(pobj), son, attr, handle,
2159 GOTO(err_destroy, rc);
2162 * in case of replay we just set LOVEA provided by the client
2163 * XXX: I think it would be interesting to try "old" way where
2164 * MDT calls this xattr_set(LOV) in a different transaction.
2165 * probably this way we code can be made better.
2168 /* During creation, there are only a few cases we need do xattr_set to
2170 * 1. regular file: see comments above.
2171 * 2. dir: inherit default striping or pool settings from parent.
2172 * 3. create striped directory with provided stripeEA.
2173 * 4. create striped directory because inherit default layout from the
2176 if (spec->no_create ||
2177 (S_ISREG(attr->la_mode) && spec->sp_cr_flags & MDS_OPEN_HAS_EA) ||
2178 S_ISDIR(attr->la_mode)) {
2179 const struct lu_buf *buf;
2181 buf = mdd_buf_get_const(env, spec->u.sp_ea.eadata,
2182 spec->u.sp_ea.eadatalen);
2183 rc = mdo_xattr_set(env, son, buf,
2184 S_ISDIR(attr->la_mode) ? XATTR_NAME_LMV :
2186 handle, BYPASS_CAPA);
2188 GOTO(err_destroy, rc);
2191 #ifdef CONFIG_FS_POSIX_ACL
2192 if (def_acl_buf != NULL && def_acl_buf->lb_len > 0 &&
2193 S_ISDIR(attr->la_mode)) {
2194 /* set default acl */
2195 rc = mdo_xattr_set(env, son, def_acl_buf,
2196 XATTR_NAME_ACL_DEFAULT, 0,
2197 handle, BYPASS_CAPA);
2199 GOTO(err_destroy, rc);
2201 /* set its own acl */
2202 if (acl_buf != NULL && acl_buf->lb_len > 0) {
2203 rc = mdo_xattr_set(env, son, acl_buf,
2204 XATTR_NAME_ACL_ACCESS,
2205 0, handle, BYPASS_CAPA);
2207 GOTO(err_destroy, rc);
2211 if (S_ISLNK(attr->la_mode)) {
2212 struct lu_ucred *uc = lu_ucred_assert(env);
2213 struct dt_object *dt = mdd_object_child(son);
2214 const char *target_name = spec->u.sp_symname;
2215 int sym_len = strlen(target_name);
2216 const struct lu_buf *buf;
2219 buf = mdd_buf_get_const(env, target_name, sym_len);
2220 rc = dt->do_body_ops->dbo_write(env, dt, buf, &pos, handle,
2221 mdd_object_capa(env, son),
2223 CFS_CAP_SYS_RESOURCE_MASK);
2228 GOTO(err_initlized, rc = -EFAULT);
2232 if (unlikely(rc != 0)) {
2234 if (S_ISDIR(attr->la_mode)) {
2235 /* Drop the reference, no need to delete "."/"..",
2236 * because the object to be destroied directly. */
2237 rc2 = mdo_ref_del(env, son, handle);
2241 rc2 = mdo_ref_del(env, son, handle);
2245 mdo_destroy(env, son, handle);
2248 mdd_write_unlock(env, son);
2253 * Create object and insert it into namespace.
2255 static int mdd_create(const struct lu_env *env, struct md_object *pobj,
2256 const struct lu_name *lname, struct md_object *child,
2257 struct md_op_spec *spec, struct md_attr* ma)
2259 struct mdd_thread_info *info = mdd_env_info(env);
2260 struct lu_attr *la = &info->mti_la_for_fix;
2261 struct mdd_object *mdd_pobj = md2mdd_obj(pobj);
2262 struct mdd_object *son = md2mdd_obj(child);
2263 struct mdd_device *mdd = mdo2mdd(pobj);
2264 struct lu_attr *attr = &ma->ma_attr;
2265 struct thandle *handle;
2266 struct lu_attr *pattr = &info->mti_pattr;
2267 struct lu_buf acl_buf;
2268 struct lu_buf def_acl_buf;
2269 struct linkea_data *ldata = &info->mti_link_data;
2270 const char *name = lname->ln_name;
2271 struct dt_allocation_hint *hint = &mdd_env_info(env)->mti_hint;
2277 * Two operations have to be performed:
2279 * - an allocation of a new object (->do_create()), and
2281 * - an insertion into a parent index (->dio_insert()).
2283 * Due to locking, operation order is not important, when both are
2284 * successful, *but* error handling cases are quite different:
2286 * - if insertion is done first, and following object creation fails,
2287 * insertion has to be rolled back, but this operation might fail
2288 * also leaving us with dangling index entry.
2290 * - if creation is done first, is has to be undone if insertion
2291 * fails, leaving us with leaked space, which is neither good, nor
2294 * It seems that creation-first is simplest solution, but it is
2295 * sub-optimal in the frequent
2300 * case, because second mkdir is bound to create object, only to
2301 * destroy it immediately.
2303 * To avoid this follow local file systems that do double lookup:
2305 * 0. lookup -> -EEXIST (mdd_create_sanity_check())
2307 * 1. create (mdd_object_create_internal())
2309 * 2. insert (__mdd_index_insert(), lookup again)
2312 rc = mdd_la_get(env, mdd_pobj, pattr, BYPASS_CAPA);
2316 /* Sanity checks before big job. */
2317 rc = mdd_create_sanity_check(env, pobj, pattr, lname, attr, spec);
2321 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_DQACQ_NET))
2322 GOTO(out_free, rc = -EINPROGRESS);
2324 handle = mdd_trans_create(env, mdd);
2326 GOTO(out_free, rc = PTR_ERR(handle));
2328 acl_buf.lb_buf = info->mti_xattr_buf;
2329 acl_buf.lb_len = sizeof(info->mti_xattr_buf);
2330 def_acl_buf.lb_buf = info->mti_key;
2331 def_acl_buf.lb_len = sizeof(info->mti_key);
2332 rc = mdd_acl_init(env, mdd_pobj, attr, &def_acl_buf, &acl_buf);
2336 mdd_object_make_hint(env, mdd_pobj, son, attr, spec, hint);
2338 memset(ldata, 0, sizeof(*ldata));
2339 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_PARENT)) {
2340 struct lu_fid tfid = *mdd_object_fid(mdd_pobj);
2343 rc = mdd_linkea_prepare(env, son, NULL, NULL,
2344 &tfid, lname, 1, 0, ldata);
2346 rc = mdd_linkea_prepare(env, son, NULL, NULL,
2347 mdd_object_fid(mdd_pobj),
2348 lname, 1, 0, ldata);
2351 rc = mdd_declare_create(env, mdd, mdd_pobj, son, lname, attr,
2352 handle, spec, ldata, &def_acl_buf, &acl_buf,
2357 rc = mdd_trans_start(env, mdd, handle);
2361 rc = mdd_object_create(env, mdd_pobj, son, attr, spec, &acl_buf,
2362 &def_acl_buf, hint, handle);
2366 if (unlikely(spec->sp_cr_flags & MDS_OPEN_VOLATILE)) {
2367 mdd_write_lock(env, son, MOR_TGT_CHILD);
2368 rc = __mdd_orphan_add(env, son, handle);
2369 GOTO(out_volatile, rc);
2371 rc = __mdd_index_insert(env, mdd_pobj, mdo2fid(son),
2372 attr->la_mode, name, handle,
2373 mdd_object_capa(env, mdd_pobj));
2375 GOTO(err_created, rc);
2377 mdd_links_add(env, son, mdo2fid(mdd_pobj), lname, handle,
2380 /* update parent directory mtime/ctime */
2382 la->la_valid = LA_CTIME | LA_MTIME;
2383 rc = mdd_update_time(env, mdd_pobj, pattr, la, handle);
2385 GOTO(err_insert, rc);
2393 if (spec->sp_cr_flags & MDS_OPEN_VOLATILE)
2394 rc2 = __mdd_orphan_del(env, son, handle);
2396 rc2 = __mdd_index_delete(env, mdd_pobj, name,
2397 S_ISDIR(attr->la_mode),
2398 handle, BYPASS_CAPA);
2403 mdd_write_lock(env, son, MOR_TGT_CHILD);
2404 if (S_ISDIR(attr->la_mode)) {
2405 /* Drop the reference, no need to delete "."/"..",
2406 * because the object is to be destroyed directly. */
2407 rc2 = mdo_ref_del(env, son, handle);
2409 mdd_write_unlock(env, son);
2414 /* For volatile files drop one link immediately, since there is
2415 * no filename in the namespace, and save any error returned. */
2416 rc2 = mdo_ref_del(env, son, handle);
2418 mdd_write_unlock(env, son);
2419 if (unlikely(rc == 0))
2424 /* Don't destroy the volatile object on success */
2425 if (likely(rc != 0))
2426 mdo_destroy(env, son, handle);
2427 mdd_write_unlock(env, son);
2430 if (rc == 0 && fid_is_namespace_visible(mdo2fid(son)) &&
2431 likely((spec->sp_cr_flags & MDS_OPEN_VOLATILE) == 0))
2432 rc = mdd_changelog_ns_store(env, mdd,
2433 S_ISDIR(attr->la_mode) ? CL_MKDIR :
2434 S_ISREG(attr->la_mode) ? CL_CREATE :
2435 S_ISLNK(attr->la_mode) ? CL_SOFTLINK : CL_MKNOD,
2436 0, son, mdo2fid(mdd_pobj), NULL, NULL, lname,
2439 rc2 = mdd_trans_stop(env, mdd, rc, handle);
2443 if (ldata->ld_buf && ldata->ld_buf->lb_len > OBD_ALLOC_BIG)
2444 /* if we vmalloced a large buffer drop it */
2445 lu_buf_free(ldata->ld_buf);
2447 /* The child object shouldn't be cached anymore */
2449 set_bit(LU_OBJECT_HEARD_BANSHEE,
2450 &child->mo_lu.lo_header->loh_flags);
2455 * Get locks on parents in proper order
2456 * RETURN: < 0 - error, rename_order if successful
2464 static int mdd_rename_order(const struct lu_env *env,
2465 struct mdd_device *mdd,
2466 struct mdd_object *src_pobj,
2467 const struct lu_attr *pattr,
2468 struct mdd_object *tgt_pobj)
2470 /* order of locking, 1 - tgt-src, 0 - src-tgt*/
2474 if (src_pobj == tgt_pobj)
2475 RETURN(MDD_RN_SAME);
2477 /* compared the parent child relationship of src_p&tgt_p */
2478 if (lu_fid_eq(&mdd->mdd_root_fid, mdo2fid(src_pobj))){
2480 } else if (lu_fid_eq(&mdd->mdd_root_fid, mdo2fid(tgt_pobj))) {
2483 rc = mdd_is_parent(env, mdd, src_pobj, pattr, mdo2fid(tgt_pobj),
2497 /* has not mdd_write{read}_lock on any obj yet. */
2498 static int mdd_rename_sanity_check(const struct lu_env *env,
2499 struct mdd_object *src_pobj,
2500 const struct lu_attr *pattr,
2501 struct mdd_object *tgt_pobj,
2502 const struct lu_attr *tpattr,
2503 struct mdd_object *sobj,
2504 const struct lu_attr *cattr,
2505 struct mdd_object *tobj,
2506 const struct lu_attr *tattr)
2511 /* XXX: when get here, sobj must NOT be NULL,
2512 * the other case has been processed in cld_rename
2513 * before mdd_rename and enable MDS_PERM_BYPASS. */
2516 rc = mdd_may_delete(env, src_pobj, pattr, sobj, cattr, NULL, 1, 0);
2520 /* XXX: when get here, "tobj == NULL" means tobj must
2521 * NOT exist (neither on remote MDS, such case has been
2522 * processed in cld_rename before mdd_rename and enable
2524 * So check may_create, but not check may_unlink. */
2526 rc = mdd_may_create(env, tgt_pobj, tpattr, NULL,
2527 (src_pobj != tgt_pobj));
2529 rc = mdd_may_delete(env, tgt_pobj, tpattr, tobj, tattr, cattr,
2530 (src_pobj != tgt_pobj), 1);
2532 if (!rc && !tobj && (src_pobj != tgt_pobj) && S_ISDIR(cattr->la_mode))
2533 rc = __mdd_may_link(env, tgt_pobj, tpattr);
2538 static int mdd_declare_rename(const struct lu_env *env,
2539 struct mdd_device *mdd,
2540 struct mdd_object *mdd_spobj,
2541 struct mdd_object *mdd_tpobj,
2542 struct mdd_object *mdd_sobj,
2543 struct mdd_object *mdd_tobj,
2544 const struct lu_name *tname,
2545 const struct lu_name *sname,
2547 struct linkea_data *ldata,
2548 struct thandle *handle)
2550 struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix;
2553 LASSERT(ma->ma_attr.la_valid & LA_CTIME);
2554 la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime;
2560 /* name from source dir */
2561 rc = mdo_declare_index_delete(env, mdd_spobj, sname->ln_name, handle);
2565 /* .. from source child */
2566 if (S_ISDIR(mdd_object_type(mdd_sobj))) {
2567 /* source child can be directory,
2568 * counted by source dir's nlink */
2569 rc = mdo_declare_ref_del(env, mdd_spobj, handle);
2572 if (mdd_spobj != mdd_tpobj) {
2573 rc = mdo_declare_index_delete(env, mdd_sobj, dotdot,
2578 rc = mdo_declare_index_insert(env, mdd_sobj,
2580 S_IFDIR, dotdot, handle);
2585 /* new target child can be directory,
2586 * counted by target dir's nlink */
2587 rc = mdo_declare_ref_add(env, mdd_tpobj, handle);
2592 la->la_valid = LA_CTIME | LA_MTIME;
2593 rc = mdo_declare_attr_set(env, mdd_spobj, la, handle);
2597 rc = mdo_declare_attr_set(env, mdd_tpobj, la, handle);
2601 la->la_valid = LA_CTIME;
2602 rc = mdo_declare_attr_set(env, mdd_sobj, la, handle);
2606 rc = mdd_declare_links_add(env, mdd_sobj, handle, ldata,
2607 S_ISREG(mdd_object_type(mdd_sobj)) ? MLAO_CHECK : MLAO_IGNORE);
2612 rc = mdo_declare_index_insert(env, mdd_tpobj, mdo2fid(mdd_sobj),
2613 mdd_object_type(mdd_sobj),
2614 tname->ln_name, handle);
2618 /* name from target dir (old name), we declare it unconditionally
2619 * as mdd_rename() calls delete unconditionally as well. so just
2620 * to balance declarations vs calls to change ... */
2621 rc = mdo_declare_index_delete(env, mdd_tpobj, tname->ln_name, handle);
2625 if (mdd_tobj && mdd_object_exists(mdd_tobj)) {
2626 /* delete target child in target parent directory */
2627 rc = mdo_declare_ref_del(env, mdd_tobj, handle);
2631 if (S_ISDIR(mdd_object_type(mdd_tobj))) {
2632 /* target child can be directory,
2633 * delete "." reference in target child directory */
2634 rc = mdo_declare_ref_del(env, mdd_tobj, handle);
2638 /* delete ".." reference in target parent directory */
2639 rc = mdo_declare_ref_del(env, mdd_tpobj, handle);
2644 la->la_valid = LA_CTIME;
2645 rc = mdo_declare_attr_set(env, mdd_tobj, la, handle);
2649 rc = mdd_declare_finish_unlink(env, mdd_tobj, handle);
2654 rc = mdd_declare_changelog_store(env, mdd, tname, sname, handle);
2661 /* src object can be remote that is why we use only fid and type of object */
2662 static int mdd_rename(const struct lu_env *env,
2663 struct md_object *src_pobj, struct md_object *tgt_pobj,
2664 const struct lu_fid *lf, const struct lu_name *lsname,
2665 struct md_object *tobj, const struct lu_name *ltname,
2668 const char *sname = lsname->ln_name;
2669 const char *tname = ltname->ln_name;
2670 struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix;
2671 struct mdd_object *mdd_spobj = md2mdd_obj(src_pobj); /* source parent */
2672 struct mdd_object *mdd_tpobj = md2mdd_obj(tgt_pobj);
2673 struct mdd_device *mdd = mdo2mdd(src_pobj);
2674 struct mdd_object *mdd_sobj = NULL; /* source object */
2675 struct mdd_object *mdd_tobj = NULL;
2676 struct lu_attr *cattr = MDD_ENV_VAR(env, cattr);
2677 struct lu_attr *pattr = MDD_ENV_VAR(env, pattr);
2678 struct lu_attr *tattr = MDD_ENV_VAR(env, tattr);
2679 struct lu_attr *tpattr = MDD_ENV_VAR(env, tpattr);
2680 struct thandle *handle;
2681 struct linkea_data *ldata = &mdd_env_info(env)->mti_link_data;
2682 const struct lu_fid *tpobj_fid = mdo2fid(mdd_tpobj);
2683 const struct lu_fid *spobj_fid = mdo2fid(mdd_spobj);
2686 bool tobj_locked = 0;
2687 unsigned cl_flags = 0;
2692 mdd_tobj = md2mdd_obj(tobj);
2694 mdd_sobj = mdd_object_find(env, mdd, lf);
2696 rc = mdd_la_get(env, mdd_sobj, cattr, BYPASS_CAPA);
2698 GOTO(out_pending, rc);
2700 rc = mdd_la_get(env, mdd_spobj, pattr, BYPASS_CAPA);
2702 GOTO(out_pending, rc);
2705 rc = mdd_la_get(env, mdd_tobj, tattr, BYPASS_CAPA);
2707 GOTO(out_pending, rc);
2710 rc = mdd_la_get(env, mdd_tpobj, tpattr, BYPASS_CAPA);
2712 GOTO(out_pending, rc);
2714 rc = mdd_rename_sanity_check(env, mdd_spobj, pattr, mdd_tpobj, tpattr,
2715 mdd_sobj, cattr, mdd_tobj, tattr);
2717 GOTO(out_pending, rc);
2719 rc = mdd_name_check(mdd, ltname);
2721 GOTO(out_pending, rc);
2723 handle = mdd_trans_create(env, mdd);
2725 GOTO(out_pending, rc = PTR_ERR(handle));
2727 memset(ldata, 0, sizeof(*ldata));
2728 mdd_linkea_prepare(env, mdd_sobj, NULL, NULL, mdd_object_fid(mdd_tpobj),
2729 ltname, 1, 0, ldata);
2730 rc = mdd_declare_rename(env, mdd, mdd_spobj, mdd_tpobj, mdd_sobj,
2731 mdd_tobj, lsname, ltname, ma, ldata, handle);
2735 rc = mdd_trans_start(env, mdd, handle);
2739 /* FIXME: Should consider tobj and sobj too in rename_lock. */
2740 rc = mdd_rename_order(env, mdd, mdd_spobj, pattr, mdd_tpobj);
2742 GOTO(cleanup_unlocked, rc);
2744 is_dir = S_ISDIR(cattr->la_mode);
2746 /* Remove source name from source directory */
2747 rc = __mdd_index_delete(env, mdd_spobj, sname, is_dir, handle,
2748 mdd_object_capa(env, mdd_spobj));
2752 /* "mv dir1 dir2" needs "dir1/.." link update */
2753 if (is_dir && mdd_sobj && !lu_fid_eq(spobj_fid, tpobj_fid)) {
2754 rc = __mdd_index_delete_only(env, mdd_sobj, dotdot, handle,
2755 mdd_object_capa(env, mdd_sobj));
2757 GOTO(fixup_spobj2, rc);
2759 rc = __mdd_index_insert_only(env, mdd_sobj, tpobj_fid, S_IFDIR,
2761 mdd_object_capa(env, mdd_sobj));
2763 GOTO(fixup_spobj, rc);
2766 /* Remove target name from target directory
2767 * Here tobj can be remote one, so we do index_delete unconditionally
2768 * and -ENOENT is allowed.
2770 rc = __mdd_index_delete(env, mdd_tpobj, tname, is_dir, handle,
2771 mdd_object_capa(env, mdd_tpobj));
2774 /* tname might been renamed to something else */
2775 GOTO(fixup_spobj, rc);
2778 GOTO(fixup_spobj, rc);
2781 /* Insert new fid with target name into target dir */
2782 rc = __mdd_index_insert(env, mdd_tpobj, lf, cattr->la_mode,
2783 tname, handle, mdd_object_capa(env, mdd_tpobj));
2785 GOTO(fixup_tpobj, rc);
2787 LASSERT(ma->ma_attr.la_valid & LA_CTIME);
2788 la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime;
2790 /* XXX: mdd_sobj must be local one if it is NOT NULL. */
2792 la->la_valid = LA_CTIME;
2793 rc = mdd_update_time(env, mdd_sobj, cattr, la, handle);
2795 GOTO(fixup_tpobj, rc);
2798 /* Remove old target object
2799 * For tobj is remote case cmm layer has processed
2800 * and set tobj to NULL then. So when tobj is NOT NULL,
2801 * it must be local one.
2803 if (tobj && mdd_object_exists(mdd_tobj)) {
2804 mdd_write_lock(env, mdd_tobj, MOR_TGT_CHILD);
2806 if (mdd_is_dead_obj(mdd_tobj)) {
2807 /* shld not be dead, something is wrong */
2808 CERROR("tobj is dead, something is wrong\n");
2812 mdo_ref_del(env, mdd_tobj, handle);
2814 /* Remove dot reference. */
2815 if (S_ISDIR(tattr->la_mode))
2816 mdo_ref_del(env, mdd_tobj, handle);
2819 /* fetch updated nlink */
2820 rc = mdd_la_get(env, mdd_tobj, tattr, BYPASS_CAPA);
2822 CERROR("%s: Failed to get nlink for tobj "
2824 mdd2obd_dev(mdd)->obd_name,
2825 PFID(tpobj_fid), rc);
2826 GOTO(fixup_tpobj, rc);
2829 la->la_valid = LA_CTIME;
2830 rc = mdd_update_time(env, mdd_tobj, tattr, la, handle);
2832 CERROR("%s: Failed to set ctime for tobj "
2834 mdd2obd_dev(mdd)->obd_name,
2835 PFID(tpobj_fid), rc);
2836 GOTO(fixup_tpobj, rc);
2839 /* XXX: this transfer to ma will be removed with LOD/OSP */
2840 ma->ma_attr = *tattr;
2841 ma->ma_valid |= MA_INODE;
2842 rc = mdd_finish_unlink(env, mdd_tobj, ma, mdd_tpobj, ltname,
2845 CERROR("%s: Failed to unlink tobj "
2847 mdd2obd_dev(mdd)->obd_name,
2848 PFID(tpobj_fid), rc);
2849 GOTO(fixup_tpobj, rc);
2852 /* fetch updated nlink */
2853 rc = mdd_la_get(env, mdd_tobj, tattr, BYPASS_CAPA);
2855 CERROR("%s: Failed to get nlink for tobj "
2857 mdd2obd_dev(mdd)->obd_name,
2858 PFID(tpobj_fid), rc);
2859 GOTO(fixup_tpobj, rc);
2861 /* XXX: this transfer to ma will be removed with LOD/OSP */
2862 ma->ma_attr = *tattr;
2863 ma->ma_valid |= MA_INODE;
2865 if (tattr->la_nlink == 0) {
2866 cl_flags |= CLF_RENAME_LAST;
2867 if (mdd_hsm_archive_exists(env, mdd_tobj, ma))
2868 cl_flags |= CLF_RENAME_LAST_EXISTS;
2872 la->la_valid = LA_CTIME | LA_MTIME;
2873 rc = mdd_update_time(env, mdd_spobj, pattr, la, handle);
2875 GOTO(fixup_tpobj, rc);
2877 if (mdd_spobj != mdd_tpobj) {
2878 la->la_valid = LA_CTIME | LA_MTIME;
2879 rc = mdd_update_time(env, mdd_tpobj, tpattr, la, handle);
2882 if (rc == 0 && mdd_sobj) {
2883 mdd_write_lock(env, mdd_sobj, MOR_SRC_CHILD);
2884 rc = mdd_links_rename(env, mdd_sobj, mdo2fid(mdd_spobj), lsname,
2885 mdo2fid(mdd_tpobj), ltname, handle, NULL,
2888 /* Old files might not have EA entry */
2889 mdd_links_add(env, mdd_sobj, mdo2fid(mdd_spobj),
2890 lsname, handle, NULL, 0);
2891 mdd_write_unlock(env, mdd_sobj);
2892 /* We don't fail the transaction if the link ea can't be
2893 updated -- fid2path will use alternate lookup method. */
2901 rc2 = __mdd_index_delete(env, mdd_tpobj, tname, is_dir, handle,
2904 CWARN("tp obj fix error %d\n",rc2);
2906 if (mdd_tobj && mdd_object_exists(mdd_tobj) &&
2907 !mdd_is_dead_obj(mdd_tobj)) {
2909 mdo_ref_add(env, mdd_tobj, handle);
2911 mdo_ref_add(env, mdd_tobj, handle);
2914 rc2 = __mdd_index_insert(env, mdd_tpobj,
2916 mdd_object_type(mdd_tobj),
2917 tname, handle, BYPASS_CAPA);
2919 CWARN("tp obj fix error: rc = %d\n", rc2);
2924 if (rc && is_dir && mdd_sobj && mdd_spobj != mdd_tpobj) {
2925 rc2 = __mdd_index_delete_only(env, mdd_sobj, dotdot, handle,
2929 CWARN("%s: sp obj dotdot delete error: rc = %d\n",
2930 mdd2obd_dev(mdd)->obd_name, rc2);
2933 rc2 = __mdd_index_insert_only(env, mdd_sobj, spobj_fid, S_IFDIR,
2934 dotdot, handle, BYPASS_CAPA);
2936 CWARN("%s: sp obj dotdot insert error: rc = %d\n",
2937 mdd2obd_dev(mdd)->obd_name, rc2);
2942 rc2 = __mdd_index_insert(env, mdd_spobj, lf,
2943 mdd_object_type(mdd_sobj), sname,
2944 handle, BYPASS_CAPA);
2946 CWARN("sp obj fix error: rc = %d\n", rc2);
2951 mdd_write_unlock(env, mdd_tobj);
2955 rc = mdd_changelog_ns_store(env, mdd, CL_RENAME, cl_flags,
2956 mdd_tobj, tpobj_fid, lf, spobj_fid,
2957 ltname, lsname, handle);
2960 mdd_trans_stop(env, mdd, rc, handle);
2963 mdd_object_put(env, mdd_sobj);
2968 * During migration once the parent FID has been changed,
2969 * we need update the parent FID in linkea.
2971 static int mdd_linkea_update_child_internal(const struct lu_env *env,
2972 struct mdd_object *parent,
2973 struct mdd_object *child,
2974 const char *name, int namelen,
2975 struct thandle *handle,
2978 struct mdd_thread_info *info = mdd_env_info(env);
2979 struct linkea_data ldata = {0};
2980 struct lu_buf *buf = &info->mti_link_buf;
2986 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
2987 if (buf->lb_buf == NULL)
2991 rc = mdd_links_read(env, child, &ldata);
2993 if (rc == -ENOENT || rc == -ENODATA)
2998 LASSERT(ldata.ld_leh != NULL);
2999 ldata.ld_lee = (struct link_ea_entry *)(ldata.ld_leh + 1);
3000 for (count = 0; count < ldata.ld_leh->leh_reccount; count++) {
3001 struct mdd_device *mdd = mdo2mdd(&child->mod_obj);
3002 struct lu_name lname;
3005 linkea_entry_unpack(ldata.ld_lee, &ldata.ld_reclen,
3008 if (strncmp(lname.ln_name, name, namelen) != 0 ||
3009 lu_fid_eq(&fid, mdd_object_fid(parent))) {
3010 ldata.ld_lee = (struct link_ea_entry *)
3011 ((char *)ldata.ld_lee +
3016 CDEBUG(D_INFO, "%s: update "DFID" with %.*s:"DFID"\n",
3017 mdd2obd_dev(mdd)->obd_name, PFID(mdd_object_fid(child)),
3018 lname.ln_namelen, lname.ln_name,
3019 PFID(mdd_object_fid(parent)));
3020 /* update to the new parent fid */
3021 linkea_entry_pack(ldata.ld_lee, &lname,
3022 mdd_object_fid(parent));
3024 rc = mdd_declare_links_add(env, child, handle, &ldata,
3027 rc = mdd_links_write(env, child, &ldata, handle);
3033 static int mdd_linkea_declare_update_child(const struct lu_env *env,
3034 struct mdd_object *parent,
3035 struct mdd_object *child,
3036 const char *name, int namelen,
3037 struct thandle *handle)
3039 return mdd_linkea_update_child_internal(env, parent, child, name,
3040 namelen, handle, true);
3043 static int mdd_linkea_update_child(const struct lu_env *env,
3044 struct mdd_object *parent,
3045 struct mdd_object *child,
3046 const char *name, int namelen,
3047 struct thandle *handle)
3049 return mdd_linkea_update_child_internal(env, parent, child, name,
3050 namelen, handle, false);
3053 static int mdd_update_linkea_internal(const struct lu_env *env,
3054 struct mdd_object *mdd_pobj,
3055 struct mdd_object *mdd_sobj,
3056 struct mdd_object *mdd_tobj,
3057 const struct lu_name *child_name,
3058 struct thandle *handle,
3061 struct mdd_thread_info *info = mdd_env_info(env);
3062 struct linkea_data *ldata = &info->mti_link_data;
3067 rc = mdd_links_read(env, mdd_sobj, ldata);
3069 if (rc == -ENOENT || rc == -ENODATA)
3075 rc = mdd_declare_links_add(env, mdd_tobj, handle, ldata,
3078 rc = mdd_links_write(env, mdd_tobj, ldata, handle);
3083 /* If it is mulitple links file, we need update the name entry for
3085 LASSERT(ldata->ld_leh != NULL);
3086 ldata->ld_lee = (struct link_ea_entry *)(ldata->ld_leh + 1);
3087 for (count = 0; count < ldata->ld_leh->leh_reccount; count++) {
3088 struct mdd_device *mdd = mdo2mdd(&mdd_sobj->mod_obj);
3089 struct mdd_object *pobj;
3090 struct lu_name lname;
3093 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen,
3095 ldata->ld_lee = (struct link_ea_entry *)((char *)ldata->ld_lee +
3097 pobj = mdd_object_find(env, mdd, &fid);
3099 CWARN("%s: cannot find obj "DFID": rc = %ld\n",
3100 mdd2obd_dev(mdd)->obd_name, PFID(&fid),
3105 if (!mdd_object_exists(pobj)) {
3106 CDEBUG(D_INFO, "%s: obj "DFID" does not exist\n",
3107 mdd2obd_dev(mdd)->obd_name, PFID(&fid));
3111 if (pobj == mdd_pobj &&
3112 lname.ln_namelen == child_name->ln_namelen &&
3113 strncmp(lname.ln_name, child_name->ln_name,
3114 lname.ln_namelen) == 0) {
3115 CDEBUG(D_INFO, "%s: skip its own %s: "DFID"\n",
3116 mdd2obd_dev(mdd)->obd_name, child_name->ln_name,
3121 CDEBUG(D_INFO, "%s: update "DFID" with "DNAME":"DFID"\n",
3122 mdd2obd_dev(mdd)->obd_name, PFID(mdd_object_fid(pobj)),
3123 PNAME(&lname), PFID(mdd_object_fid(mdd_tobj)));
3126 /* Remove source name from source directory */
3127 /* Insert new fid with target name into target dir */
3128 rc = mdo_declare_index_delete(env, pobj, lname.ln_name,
3133 rc = mdo_declare_index_insert(env, pobj,
3134 mdd_object_fid(mdd_tobj),
3135 mdd_object_type(mdd_tobj),
3136 lname.ln_name, handle);
3140 rc = mdo_declare_ref_add(env, mdd_tobj, handle);
3144 rc = mdo_declare_ref_del(env, mdd_sobj, handle);
3148 rc = __mdd_index_delete(env, pobj, lname.ln_name,
3150 mdd_object_capa(env, pobj));
3154 rc = __mdd_index_insert(env, pobj,
3155 mdd_object_fid(mdd_tobj),
3156 mdd_object_type(mdd_tobj),
3157 lname.ln_name, handle,
3158 mdd_object_capa(env, pobj));
3162 mdd_write_lock(env, mdd_tobj, MOR_SRC_CHILD);
3163 rc = mdo_ref_add(env, mdd_tobj, handle);
3164 mdd_write_unlock(env, mdd_tobj);
3168 mdd_write_lock(env, mdd_sobj, MOR_TGT_CHILD);
3169 mdo_ref_del(env, mdd_sobj, handle);
3170 mdd_write_unlock(env, mdd_sobj);
3173 mdd_object_put(env, pobj);
3181 static int mdd_migrate_xattrs(const struct lu_env *env,
3182 struct mdd_object *mdd_sobj,
3183 struct mdd_object *mdd_tobj)
3185 struct mdd_thread_info *info = mdd_env_info(env);
3186 struct mdd_device *mdd = mdo2mdd(&mdd_sobj->mod_obj);
3188 struct thandle *handle;
3194 struct lu_buf list_xbuf;
3197 /* retrieve xattr list from the old object */
3198 list_xsize = mdo_xattr_list(env, mdd_sobj, &LU_BUF_NULL,
3199 mdd_object_capa(env, mdd_sobj));
3200 if (list_xsize == -ENODATA)
3206 lu_buf_check_and_alloc(&info->mti_big_buf, list_xsize);
3207 if (info->mti_big_buf.lb_buf == NULL)
3210 list_xbuf.lb_buf = info->mti_big_buf.lb_buf;
3211 list_xbuf.lb_len = list_xsize;
3212 rc = mdo_xattr_list(env, mdd_sobj, &list_xbuf,
3213 mdd_object_capa(env, mdd_sobj));
3218 xname = list_xbuf.lb_buf;
3220 xlen = strnlen(xname, rem - 1) + 1;
3221 if (strcmp(XATTR_NAME_LINK, xname) == 0 ||
3222 strcmp(XATTR_NAME_LMA, xname) == 0 ||
3223 strcmp(XATTR_NAME_LMV, xname) == 0)
3226 /* For directory, if there are default layout, migrate here */
3227 if (strcmp(XATTR_NAME_LOV, xname) == 0 &&
3228 !S_ISDIR(lu_object_attr(&mdd_sobj->mod_obj.mo_lu)))
3231 xsize = mdo_xattr_get(env, mdd_sobj, &LU_BUF_NULL,
3233 mdd_object_capa(env, mdd_sobj));
3234 if (xsize == -ENODATA)
3239 lu_buf_check_and_alloc(&info->mti_link_buf, xsize);
3240 if (info->mti_link_buf.lb_buf == NULL)
3241 GOTO(out, rc = -ENOMEM);
3243 xbuf.lb_len = xsize;
3244 xbuf.lb_buf = info->mti_link_buf.lb_buf;
3245 rc = mdo_xattr_get(env, mdd_sobj, &xbuf, xname,
3246 mdd_object_capa(env, mdd_sobj));
3252 handle = mdd_trans_create(env, mdd);
3254 GOTO(out, rc = PTR_ERR(handle));
3256 rc = mdo_declare_xattr_set(env, mdd_tobj, &xbuf, xname, 0,
3259 GOTO(stop_trans, rc);
3260 /* Note: this transaction is part of migration, and it is not
3261 * the last step of migration, so we set th_local = 1 to avoid
3262 * update last rcvd for this transaction */
3263 handle->th_local = 1;
3264 rc = mdd_trans_start(env, mdd, handle);
3266 GOTO(stop_trans, rc);
3268 rc = mdo_xattr_set(env, mdd_tobj, &xbuf, xname, 0, handle,
3269 mdd_object_capa(env, mdd_sobj));
3271 GOTO(stop_trans, rc = 0);
3274 GOTO(stop_trans, rc);
3276 mdd_trans_stop(env, mdd, rc, handle);
3281 memmove(xname, xname + xlen, rem);
3287 static int mdd_declare_migrate_create(const struct lu_env *env,
3288 struct mdd_object *mdd_pobj,
3289 struct mdd_object *mdd_sobj,
3290 struct mdd_object *mdd_tobj,
3291 struct md_op_spec *spec,
3293 union lmv_mds_md *mgr_ea,
3294 struct thandle *handle)
3296 struct lu_attr *la_flag = MDD_ENV_VAR(env, la_for_fix);
3297 const struct lu_buf *buf;
3301 rc = mdd_declare_object_create_internal(env, mdd_pobj, mdd_tobj, la,
3302 handle, spec, NULL);
3306 rc = mdd_declare_object_initialize(env, mdd_pobj, mdd_tobj, la,
3311 if (S_ISLNK(la->la_mode)) {
3312 const char *target_name = spec->u.sp_symname;
3313 int sym_len = strlen(target_name);
3314 const struct lu_buf *buf;
3316 buf = mdd_buf_get_const(env, target_name, sym_len);
3317 rc = dt_declare_record_write(env, mdd_object_child(mdd_tobj),
3323 if (spec->u.sp_ea.eadata != NULL && spec->u.sp_ea.eadatalen != 0) {
3324 buf = mdd_buf_get_const(env, spec->u.sp_ea.eadata,
3325 spec->u.sp_ea.eadatalen);
3326 rc = mdo_declare_xattr_set(env, mdd_tobj, buf, XATTR_NAME_LOV,
3332 mgr_easize = lmv_mds_md_size(2, LMV_MAGIC_V1);
3333 buf = mdd_buf_get_const(env, mgr_ea, mgr_easize);
3334 rc = mdo_declare_xattr_set(env, mdd_sobj, buf, XATTR_NAME_LMV,
3339 la_flag->la_valid = LA_FLAGS;
3340 la_flag->la_flags = la->la_flags | LUSTRE_IMMUTABLE_FL;
3341 rc = mdo_declare_attr_set(env, mdd_sobj, la_flag, handle);
3346 static int mdd_migrate_create(const struct lu_env *env,
3347 struct mdd_object *mdd_pobj,
3348 struct mdd_object *mdd_sobj,
3349 struct mdd_object *mdd_tobj,
3352 struct mdd_thread_info *info = mdd_env_info(env);
3353 struct mdd_device *mdd = mdo2mdd(&mdd_sobj->mod_obj);
3354 struct md_op_spec *spec = &info->mti_spec;
3355 struct lu_buf lmm_buf = { 0 };
3356 struct lu_buf link_buf = { 0 };
3357 const struct lu_buf *buf;
3358 struct thandle *handle;
3359 struct lmv_mds_md_v1 *mgr_ea;
3360 struct lu_attr *la_flag = MDD_ENV_VAR(env, la_for_fix);
3361 struct dt_allocation_hint *hint = &mdd_env_info(env)->mti_hint;
3366 /* prepare spec for create */
3367 memset(spec, 0, sizeof(*spec));
3368 spec->sp_cr_lookup = 0;
3369 spec->sp_feat = &dt_directory_features;
3370 if (S_ISLNK(la->la_mode)) {
3371 buf = lu_buf_check_and_alloc(
3372 &mdd_env_info(env)->mti_big_buf,
3375 link_buf.lb_len = la->la_size + 1;
3376 rc = mdd_readlink(env, &mdd_sobj->mod_obj, &link_buf);
3378 rc = rc != 0 ? rc : -EFAULT;
3379 CERROR("%s: "DFID" readlink failed: rc = %d\n",
3380 mdd2obd_dev(mdd)->obd_name,
3381 PFID(mdd_object_fid(mdd_sobj)), rc);
3384 spec->u.sp_symname = link_buf.lb_buf;
3385 } else if S_ISREG(la->la_mode) {
3386 /* retrieve lov of the old object */
3387 rc = mdd_get_lov_ea(env, mdd_sobj, &lmm_buf);
3388 if (rc != 0 && rc != -ENODATA)
3390 if (lmm_buf.lb_buf != NULL && lmm_buf.lb_len != 0) {
3391 spec->u.sp_ea.eadata = lmm_buf.lb_buf;
3392 spec->u.sp_ea.eadatalen = lmm_buf.lb_len;
3393 spec->sp_cr_flags |= MDS_OPEN_HAS_EA;
3397 mgr_ea = (struct lmv_mds_md_v1 *)info->mti_xattr_buf;
3398 memset(mgr_ea, 0, sizeof(*mgr_ea));
3399 mgr_ea->lmv_magic = cpu_to_le32(LMV_MAGIC_V1);
3400 mgr_ea->lmv_stripe_count = cpu_to_le32(2);
3401 mgr_ea->lmv_master_mdt_index = mdd_seq_site(mdd)->ss_node_id;
3402 mgr_ea->lmv_hash_type = cpu_to_le32(LMV_HASH_FLAG_MIGRATION);
3403 fid_cpu_to_le(&mgr_ea->lmv_stripe_fids[0], mdd_object_fid(mdd_sobj));
3404 fid_cpu_to_le(&mgr_ea->lmv_stripe_fids[1], mdd_object_fid(mdd_tobj));
3406 mdd_object_make_hint(env, mdd_pobj, mdd_tobj, la, spec, hint);
3408 handle = mdd_trans_create(env, mdd);
3410 GOTO(out_free, rc = PTR_ERR(handle));
3412 /* Note: this transaction is part of migration, and it is not
3413 * the last step of migration, so we set th_local = 1 to avoid
3414 * update last rcvd for this transaction */
3415 handle->th_local = 1;
3416 rc = mdd_declare_migrate_create(env, mdd_pobj, mdd_sobj, mdd_tobj,
3418 (union lmv_mds_md *)info->mti_xattr_buf,
3421 GOTO(stop_trans, rc);
3423 rc = mdd_trans_start(env, mdd, handle);
3425 GOTO(stop_trans, rc);
3427 /* create the target object */
3428 rc = mdd_object_create(env, mdd_pobj, mdd_tobj, la, spec, NULL, NULL,
3431 GOTO(stop_trans, rc);
3433 /* Set MIGRATE EA on the source inode, so once the migration needs
3434 * to be re-done during failover, the re-do process can locate the
3435 * target object which is already being created. */
3436 mgr_easize = lmv_mds_md_size(2, LMV_MAGIC_V1);
3437 buf = mdd_buf_get_const(env, mgr_ea, mgr_easize);
3438 rc = mdo_xattr_set(env, mdd_sobj, buf, XATTR_NAME_LMV, 0,
3439 handle, mdd_object_capa(env, mdd_sobj));
3441 GOTO(stop_trans, rc);
3443 /* Set immutable flag, so any modification is disabled until
3444 * the migration is done. Once the migration is interrupted,
3445 * if the resume process find the migrating object has both
3446 * IMMUTALBE flag and MIGRATE EA, it need to clear IMMUTABLE
3447 * flag and approve the migration */
3448 la_flag->la_valid = LA_FLAGS;
3449 la_flag->la_flags = la->la_flags | LUSTRE_IMMUTABLE_FL;
3450 rc = mdo_attr_set(env, mdd_sobj, la_flag, handle,
3451 mdd_object_capa(env, mdd_sobj));
3454 mdd_trans_stop(env, mdd, rc, handle);
3456 if (lmm_buf.lb_buf != NULL)
3457 OBD_FREE(lmm_buf.lb_buf, lmm_buf.lb_len);
3461 static int mdd_migrate_entries(const struct lu_env *env,
3462 struct mdd_object *mdd_sobj,
3463 struct mdd_object *mdd_tobj)
3465 struct dt_object *next = mdd_object_child(mdd_sobj);
3466 struct mdd_device *mdd = mdo2mdd(&mdd_sobj->mod_obj);
3467 struct dt_object *dt_tobj = mdd_object_child(mdd_tobj);
3468 struct thandle *handle;
3470 const struct dt_it_ops *iops;
3473 struct lu_dirent *ent;
3476 OBD_ALLOC(ent, NAME_MAX + sizeof(*ent) + 1);
3480 if (!dt_try_as_dir(env, next))
3481 GOTO(out_ent, rc = -ENOTDIR);
3483 * iterate directories
3485 iops = &next->do_index_ops->dio_it;
3486 it = iops->init(env, next, LUDA_FID | LUDA_TYPE,
3487 mdd_object_capa(env, mdd_sobj));
3489 GOTO(out_ent, rc = PTR_ERR(it));
3491 rc = iops->load(env, it, 0);
3493 rc = iops->next(env, it);
3497 * At this point and across for-loop:
3499 * rc == 0 -> ok, proceed.
3500 * rc > 0 -> end of directory.
3504 struct mdd_object *child;
3505 char *name = mdd_env_info(env)->mti_key;
3509 bool target_exist = false;
3511 len = iops->key_size(env, it);
3515 result = iops->rec(env, it, (struct dt_rec *)ent,
3516 LUDA_FID | LUDA_TYPE);
3517 if (result == -ESTALE)
3524 fid_le_to_cpu(&ent->lde_fid, &ent->lde_fid);
3525 recsize = le16_to_cpu(ent->lde_reclen);
3527 /* Insert new fid with target name into target dir */
3528 if ((ent->lde_namelen == 1 && ent->lde_name[0] == '.') ||
3529 (ent->lde_namelen == 2 && ent->lde_name[0] == '.' &&
3530 ent->lde_name[1] == '.'))
3533 child = mdd_object_find(env, mdd, &ent->lde_fid);
3535 GOTO(out, rc = PTR_ERR(child));
3537 is_dir = S_ISDIR(mdd_object_type(child));
3539 snprintf(name, ent->lde_namelen + 1, "%s", ent->lde_name);
3541 /* Check whether the name has been inserted to the target */
3542 if (dt_try_as_dir(env, dt_tobj)) {
3543 struct lu_fid *fid = &mdd_env_info(env)->mti_fid2;
3545 rc = dt_lookup(env, dt_tobj, (struct dt_rec *)fid,
3546 (struct dt_key *)name,
3547 mdd_object_capa(env, mdd_tobj));
3548 if (unlikely(rc == 0))
3549 target_exist = true;
3552 handle = mdd_trans_create(env, mdd);
3554 GOTO(out, rc = PTR_ERR(handle));
3556 /* Note: this transaction is part of migration, and it is not
3557 * the last step of migration, so we set th_local = 1 to avoid
3558 * updating last rcvd for this transaction */
3559 handle->th_local = 1;
3560 if (likely(!target_exist)) {
3561 rc = mdo_declare_index_insert(env, mdd_tobj,
3563 mdd_object_type(child),
3569 rc = mdo_declare_ref_add(env, mdd_tobj, handle);
3575 rc = mdo_declare_index_delete(env, mdd_sobj, name, handle);
3580 rc = mdo_declare_ref_del(env, mdd_sobj, handle);
3584 /* Update .. for child */
3585 rc = mdo_declare_index_delete(env, child, dotdot,
3590 rc = mdo_declare_index_insert(env, child,
3591 mdd_object_fid(mdd_tobj),
3592 S_IFDIR, dotdot, handle);
3597 rc = mdd_linkea_declare_update_child(env, mdd_tobj,
3604 rc = mdd_trans_start(env, mdd, handle);
3606 CERROR("%s: transaction start failed: rc = %d\n",
3607 mdd2obd_dev(mdd)->obd_name, rc);
3611 if (likely(!target_exist)) {
3612 rc = __mdd_index_insert(env, mdd_tobj, &ent->lde_fid,
3613 mdd_object_type(child),
3615 mdd_object_capa(env, mdd_tobj));
3620 rc = mdo_ref_add(env, mdd_tobj, handle);
3627 rc = __mdd_index_delete(env, mdd_sobj, name, is_dir, handle,
3628 mdd_object_capa(env, mdd_sobj));
3633 rc = __mdd_index_delete_only(env, child, dotdot, handle,
3634 mdd_object_capa(env, child));
3638 rc = __mdd_index_insert_only(env, child,
3639 mdd_object_fid(mdd_tobj), S_IFDIR,
3641 mdd_object_capa(env, child));
3646 rc = mdd_linkea_update_child(env, mdd_tobj, child, name,
3647 strlen(name), handle);
3650 mdd_object_put(env, child);
3651 mdd_trans_stop(env, mdd, rc, handle);
3655 result = iops->next(env, it);
3656 if (OBD_FAIL_CHECK(OBD_FAIL_MIGRATE_ENTRIES))
3657 GOTO(out, rc = -EINTR);
3659 if (result == -ESTALE)
3661 } while (result == 0);
3664 iops->fini(env, it);
3666 OBD_FREE(ent, NAME_MAX + sizeof(*ent) + 1);
3670 static int mdd_declare_update_linkea(const struct lu_env *env,
3671 struct mdd_object *mdd_pobj,
3672 struct mdd_object *mdd_sobj,
3673 struct mdd_object *mdd_tobj,
3674 struct thandle *handle,
3675 const struct lu_name *child_name)
3677 return mdd_update_linkea_internal(env, mdd_pobj, mdd_sobj, mdd_tobj,
3678 child_name, handle, 1);
3681 static int mdd_update_linkea(const struct lu_env *env,
3682 struct mdd_object *mdd_pobj,
3683 struct mdd_object *mdd_sobj,
3684 struct mdd_object *mdd_tobj,
3685 struct thandle *handle,
3686 const struct lu_name *child_name)
3688 return mdd_update_linkea_internal(env, mdd_pobj, mdd_sobj, mdd_tobj,
3689 child_name, handle, 0);
3692 static int mdd_declare_migrate_update_name(const struct lu_env *env,
3693 struct mdd_object *mdd_pobj,
3694 struct mdd_object *mdd_sobj,
3695 struct mdd_object *mdd_tobj,
3696 const struct lu_name *lname,
3698 struct lu_attr *parent_la,
3699 struct thandle *handle)
3701 struct lu_attr *la_flag = MDD_ENV_VAR(env, tattr);
3704 /* Revert IMMUTABLE flag */
3705 la_flag->la_valid = LA_FLAGS;
3706 la_flag->la_flags = la->la_flags & ~LUSTRE_IMMUTABLE_FL;
3707 rc = mdo_declare_attr_set(env, mdd_sobj, la_flag, handle);
3711 /* delete entry from source dir */
3712 rc = mdo_declare_index_delete(env, mdd_pobj, lname->ln_name, handle);
3716 rc = mdd_declare_update_linkea(env, mdd_pobj, mdd_sobj,
3717 mdd_tobj, handle, lname);
3721 if (S_ISREG(mdd_object_type(mdd_sobj))) {
3722 rc = mdo_declare_xattr_del(env, mdd_sobj, XATTR_NAME_LOV,
3728 if (S_ISDIR(mdd_object_type(mdd_sobj))) {
3729 rc = mdo_declare_ref_del(env, mdd_pobj, handle);
3735 rc = mdo_declare_index_insert(env, mdd_pobj, mdo2fid(mdd_tobj),
3736 mdd_object_type(mdd_tobj),
3737 lname->ln_name, handle);
3741 if (S_ISDIR(mdd_object_type(mdd_sobj))) {
3742 rc = mdo_declare_ref_add(env, mdd_pobj, handle);
3747 /* delete old object */
3748 rc = mdo_declare_ref_del(env, mdd_sobj, handle);
3752 if (S_ISDIR(mdd_object_type(mdd_sobj))) {
3753 /* delete old object */
3754 rc = mdo_declare_ref_del(env, mdd_sobj, handle);
3757 /* set nlink to 0 */
3758 rc = mdo_declare_attr_set(env, mdd_sobj, la, handle);
3763 rc = mdd_declare_finish_unlink(env, mdd_sobj, handle);
3767 rc = mdo_declare_attr_set(env, mdd_pobj, parent_la, handle);
3772 static int mdd_migrate_update_name(const struct lu_env *env,
3773 struct mdd_object *mdd_pobj,
3774 struct mdd_object *mdd_sobj,
3775 struct mdd_object *mdd_tobj,
3776 const struct lu_name *lname,
3779 struct lu_attr *p_la = MDD_ENV_VAR(env, la_for_fix);
3780 struct lu_attr *so_attr = MDD_ENV_VAR(env, cattr);
3781 struct lu_attr *la_flag = MDD_ENV_VAR(env, tattr);
3782 struct mdd_device *mdd = mdo2mdd(&mdd_sobj->mod_obj);
3783 struct thandle *handle;
3784 int is_dir = S_ISDIR(mdd_object_type(mdd_sobj));
3785 const char *name = lname->ln_name;
3789 /* update time for parent */
3790 LASSERT(ma->ma_attr.la_valid & LA_CTIME);
3791 p_la->la_ctime = p_la->la_mtime = ma->ma_attr.la_ctime;
3792 p_la->la_valid = LA_CTIME;
3794 rc = mdd_la_get(env, mdd_sobj, so_attr, mdd_object_capa(env, mdd_sobj));
3798 handle = mdd_trans_create(env, mdd);
3800 RETURN(PTR_ERR(handle));
3802 rc = mdd_declare_migrate_update_name(env, mdd_pobj, mdd_sobj, mdd_tobj,
3803 lname, so_attr, p_la, handle);
3805 /* If the migration can not be fit in one transaction, just
3806 * leave it in the original MDT */
3808 GOTO(stop_trans, rc = 0);
3810 GOTO(stop_trans, rc);
3813 CDEBUG(D_INFO, "%s: update "DFID"/"DFID" with %s:"DFID"\n",
3814 mdd2obd_dev(mdd)->obd_name, PFID(mdd_object_fid(mdd_pobj)),
3815 PFID(mdd_object_fid(mdd_sobj)), lname->ln_name,
3816 PFID(mdd_object_fid(mdd_tobj)));
3818 rc = mdd_trans_start(env, mdd, handle);
3820 GOTO(stop_trans, rc);
3822 /* Revert IMMUTABLE flag */
3823 la_flag->la_valid = LA_FLAGS;
3824 la_flag->la_flags = so_attr->la_flags & ~LUSTRE_IMMUTABLE_FL;
3825 rc = mdo_attr_set(env, mdd_sobj, la_flag, handle,
3826 mdd_object_capa(env, mdd_pobj));
3828 GOTO(stop_trans, rc);
3830 /* Remove source name from source directory */
3831 rc = __mdd_index_delete(env, mdd_pobj, name, is_dir, handle,
3832 mdd_object_capa(env, mdd_pobj));
3834 GOTO(stop_trans, rc);
3836 rc = mdd_update_linkea(env, mdd_pobj, mdd_sobj, mdd_tobj,
3839 GOTO(stop_trans, rc);
3841 if (S_ISREG(so_attr->la_mode)) {
3842 if (so_attr->la_nlink == 1) {
3843 rc = mdo_xattr_del(env, mdd_sobj, XATTR_NAME_LOV,
3845 mdd_object_capa(env, mdd_sobj));
3846 if (rc != 0 && rc != -ENODATA)
3847 GOTO(stop_trans, rc);
3851 /* Insert new fid with target name into target dir */
3852 rc = __mdd_index_insert(env, mdd_pobj, mdd_object_fid(mdd_tobj),
3853 mdd_object_type(mdd_tobj), name,
3854 handle, mdd_object_capa(env, mdd_pobj));
3856 GOTO(stop_trans, rc);
3858 rc = mdd_links_add(env, mdd_tobj, mdo2fid(mdd_pobj), lname, handle,
3861 GOTO(stop_trans, rc);
3863 mdd_write_lock(env, mdd_sobj, MOR_SRC_CHILD);
3864 mdo_ref_del(env, mdd_sobj, handle);
3866 mdo_ref_del(env, mdd_sobj, handle);
3868 /* Get the attr again after ref_del */
3869 rc = mdd_la_get(env, mdd_sobj, so_attr,
3870 mdd_object_capa(env, mdd_sobj));
3872 GOTO(out_unlock, rc);
3874 ma->ma_attr = *so_attr;
3875 ma->ma_valid |= MA_INODE;
3876 rc = mdd_finish_unlink(env, mdd_sobj, ma, mdd_pobj, lname, handle);
3878 GOTO(out_unlock, rc);
3880 rc = mdd_attr_set_internal(env, mdd_pobj, p_la, handle, 0);
3882 GOTO(out_unlock, rc);
3885 mdd_write_unlock(env, mdd_sobj);
3888 mdd_trans_stop(env, mdd, rc, handle);
3894 * Check whether we should migrate the file/dir
3896 * < 0 permission check failed or other error.
3897 * = 0 the file can be migrated.
3898 * > 0 the file does not need to be migrated, mostly
3899 * for multiple link file
3901 static int mdd_migrate_sanity_check(const struct lu_env *env,
3902 struct mdd_object *pobj,
3903 const struct lu_attr *pattr,
3904 struct mdd_object *sobj,
3905 struct lu_attr *sattr)
3907 struct mdd_thread_info *info = mdd_env_info(env);
3908 struct linkea_data *ldata = &info->mti_link_data;
3910 struct lu_buf *mgr_buf;
3916 mgr_easize = lmv_mds_md_size(2, LMV_MAGIC_V1);
3917 mgr_buf = lu_buf_check_and_alloc(&info->mti_big_buf, mgr_easize);
3918 if (mgr_buf->lb_buf == NULL)
3921 rc = mdo_xattr_get(env, sobj, mgr_buf, XATTR_NAME_LMV,
3922 mdd_object_capa(env, sobj));
3924 union lmv_mds_md *lmm = mgr_buf->lb_buf;
3926 /* If the object has migrateEA, it means IMMUTE flag
3927 * is being set by previous migration process, so it
3928 * needs to override the IMMUTE flag, otherwise the
3929 * following sanity check will fail */
3930 if (le32_to_cpu(lmm->lmv_md_v1.lmv_hash_type) &
3931 LMV_HASH_FLAG_MIGRATION) {
3932 struct mdd_device *mdd = mdo2mdd(&sobj->mod_obj);
3934 sattr->la_flags &= ~LUSTRE_IMMUTABLE_FL;
3935 CDEBUG(D_HA, "%s: "DFID" override IMMUTE FLAG\n",
3936 mdd2obd_dev(mdd)->obd_name,
3937 PFID(mdd_object_fid(sobj)));
3941 rc = mdd_rename_sanity_check(env, pobj, pattr, pobj, pattr,
3942 sobj, sattr, NULL, NULL);
3946 /* Then it will check if the file should be migrated. If the file
3947 * has mulitple links, we only need migrate the file if all of its
3948 * entries has been migrated to the remote MDT */
3949 if (!S_ISREG(sattr->la_mode) || sattr->la_nlink < 2)
3952 rc = mdd_links_read(env, sobj, ldata);
3954 /* For multiple links files, if there are no linkEA data at all,
3955 * means the file might be created before linkEA is enabled, and
3956 * all all of its links should not be migrated yet, otherwise
3957 * it should have some linkEA there */
3958 if (rc == -ENOENT || rc == -ENODATA)
3963 /* If it is mulitple links file, we need update the name entry for
3965 LASSERT(ldata->ld_leh != NULL);
3966 ldata->ld_lee = (struct link_ea_entry *)(ldata->ld_leh + 1);
3967 for (count = 0; count < ldata->ld_leh->leh_reccount; count++) {
3968 struct mdd_device *mdd = mdo2mdd(&sobj->mod_obj);
3969 struct mdd_object *lpobj;
3970 struct lu_name lname;
3973 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen,
3975 ldata->ld_lee = (struct link_ea_entry *)((char *)ldata->ld_lee +
3977 lpobj = mdd_object_find(env, mdd, &fid);
3978 if (IS_ERR(lpobj)) {
3979 CWARN("%s: cannot find obj "DFID": rc = %ld\n",
3980 mdd2obd_dev(mdd)->obd_name, PFID(&fid),
3985 if (!mdd_object_exists(lpobj) || mdd_object_remote(lpobj)) {
3986 CDEBUG(D_INFO, DFID"%.*s: is on remote MDT.\n",
3987 PFID(&fid), lname.ln_namelen, lname.ln_name);
3988 mdd_object_put(env, lpobj);
3992 CDEBUG(D_INFO, DFID"still has local entry %.*s "DFID"\n",
3993 PFID(mdd_object_fid(sobj)), lname.ln_namelen,
3994 lname.ln_name, PFID(&fid));
3995 mdd_object_put(env, lpobj);
4003 static int mdd_migrate(const struct lu_env *env, struct md_object *pobj,
4004 struct md_object *sobj, const struct lu_name *lname,
4005 struct md_object *tobj, struct md_attr *ma)
4007 struct mdd_object *mdd_pobj = md2mdd_obj(pobj);
4008 struct mdd_device *mdd = mdo2mdd(pobj);
4009 struct mdd_object *mdd_sobj = md2mdd_obj(sobj);
4010 struct mdd_object *mdd_tobj = NULL;
4011 struct lu_attr *so_attr = MDD_ENV_VAR(env, cattr);
4012 struct lu_attr *pattr = MDD_ENV_VAR(env, pattr);
4016 /* If the file will being migrated, it will check whether
4017 * the file is being opened by someone else right now */
4018 mdd_read_lock(env, mdd_sobj, MOR_SRC_CHILD);
4019 if (mdd_sobj->mod_count >= 1) {
4020 CERROR("%s: "DFID"%s is already opened count %d: rc = %d\n",
4021 mdd2obd_dev(mdd)->obd_name,
4022 PFID(mdd_object_fid(mdd_sobj)), lname->ln_name,
4023 mdd_sobj->mod_count, -EBUSY);
4024 mdd_read_unlock(env, mdd_sobj);
4025 GOTO(put, rc = -EBUSY);
4027 mdd_read_unlock(env, mdd_sobj);
4029 rc = mdd_la_get(env, mdd_sobj, so_attr, mdd_object_capa(env, mdd_sobj));
4033 rc = mdd_la_get(env, mdd_pobj, pattr, BYPASS_CAPA);
4037 rc = mdd_migrate_sanity_check(env, mdd_pobj, pattr, mdd_sobj, so_attr);
4044 /* Sigh, it is impossible to finish all of migration in a single
4045 * transaction, for example migrating big directory entries to the
4046 * new MDT, it needs insert all of name entries of children in the
4049 * So migration will be done in multiple steps and transactions.
4051 * 1. create an orphan object on the remote MDT in one transaction.
4052 * 2. migrate extend attributes to the new target file/directory.
4053 * 3. For directory, migrate the entries to the new MDT and update
4054 * linkEA of each children. Because we can not migrate all entries
4055 * in a single transaction, so the migrating directory will become
4056 * a striped directory during migration, so once the process is
4057 * interrupted, the directory is still accessible. (During lookup,
4058 * client will locate the name by searching both original and target
4060 * 4. Finally, update the name/FID to point to the new file/directory
4061 * in a separate transaction.
4064 /* step 1: Check whether the orphan object has been created, and create
4065 * orphan object on the remote MDT if needed */
4066 mdd_tobj = md2mdd_obj(tobj);
4067 if (!mdd_object_exists(mdd_tobj)) {
4068 rc = mdd_migrate_create(env, mdd_pobj, mdd_sobj, mdd_tobj,
4074 /* step 2: migrate xattr */
4075 rc = mdd_migrate_xattrs(env, mdd_sobj, mdd_tobj);
4079 /* step 3: migrate name entries to the orphan object */
4080 if (S_ISDIR(lu_object_attr(&mdd_sobj->mod_obj.mo_lu))) {
4081 rc = mdd_migrate_entries(env, mdd_sobj, mdd_tobj);
4084 if (unlikely(OBD_FAIL_CHECK_RESET(OBD_FAIL_MIGRATE_NET_REP,
4085 OBD_FAIL_MDS_REINT_NET_REP)))
4089 /* step 4: update name entry to the new object */
4090 rc = mdd_migrate_update_name(env, mdd_pobj, mdd_sobj, mdd_tobj, lname,
4098 const struct md_dir_operations mdd_dir_ops = {
4099 .mdo_is_subdir = mdd_is_subdir,
4100 .mdo_lookup = mdd_lookup,
4101 .mdo_create = mdd_create,
4102 .mdo_rename = mdd_rename,
4103 .mdo_link = mdd_link,
4104 .mdo_unlink = mdd_unlink,
4105 .mdo_create_data = mdd_create_data,
4106 .mdo_migrate = mdd_migrate,