4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2017, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
31 * lustre/mdd/mdd_dir.c
33 * Lustre Metadata Server (mdd) routines
35 * Author: Wang Di <wangdi@intel.com>
38 #define DEBUG_SUBSYSTEM S_MDS
40 #include <obd_class.h>
41 #include <obd_support.h>
42 #include <lustre_mds.h>
43 #include <lustre_fid.h>
44 #include <lustre_lmv.h>
45 #include <lustre_idmap.h>
47 #include "mdd_internal.h"
49 static const char dot[] = ".";
50 static const char dotdot[] = "..";
52 static struct lu_name lname_dotdot = {
53 .ln_name = (char *) dotdot,
54 .ln_namelen = sizeof(dotdot) - 1,
58 mdd_name_check(const struct lu_env *env, struct mdd_device *m,
59 const struct lu_name *ln)
61 struct mdd_thread_info *info = mdd_env_info(env);
62 bool enc = info->mdi_pattr.la_valid & LA_FLAGS &&
63 info->mdi_pattr.la_flags & LUSTRE_ENCRYPT_FL;
65 if (!lu_name_is_valid(ln))
67 else if (!enc && ln->ln_namelen > m->mdd_dt_conf.ddp_max_name_len)
73 /* Get FID from name and parent */
75 __mdd_lookup(const struct lu_env *env, struct md_object *pobj,
76 const struct lu_attr *pattr, const struct lu_name *lname,
77 struct lu_fid *fid, unsigned int may_mask)
79 const char *name = lname->ln_name;
80 const struct dt_key *key = (const struct dt_key *)name;
81 struct mdd_object *mdd_obj = md2mdd_obj(pobj);
82 struct dt_object *dir = mdd_object_child(mdd_obj);
87 if (unlikely(mdd_is_dead_obj(mdd_obj)))
90 if (!mdd_object_exists(mdd_obj))
93 if (mdd_object_remote(mdd_obj)) {
94 CDEBUG(D_INFO, "%s: Object "DFID" located on remote server\n",
95 mdd_obj_dev_name(mdd_obj),
96 PFID(mdd_object_fid(mdd_obj)));
99 rc = mdd_permission_internal_locked(env, mdd_obj, pattr, may_mask,
104 if (likely(S_ISDIR(mdd_object_type(mdd_obj)) &&
105 dt_try_as_dir(env, dir)))
106 rc = dt_lookup(env, dir, (struct dt_rec *)fid, key);
113 int mdd_lookup(const struct lu_env *env,
114 struct md_object *pobj, const struct lu_name *lname,
115 struct lu_fid *fid, struct md_op_spec *spec)
117 struct lu_attr *pattr = MDD_ENV_VAR(env, pattr);
121 rc = mdd_la_get(env, md2mdd_obj(pobj), pattr);
125 rc = __mdd_lookup(env, pobj, pattr, lname, fid,
126 (spec != NULL && spec->sp_permitted) ? 0 : MAY_EXEC);
130 /** Read the link EA into a temp buffer.
131 * Uses the mdd_thread_info::mdi_link_buf since it is generally large.
132 * A pointer to the buffer is stored in \a ldata::ld_buf.
136 static int __mdd_links_read(const struct lu_env *env,
137 struct mdd_object *mdd_obj,
138 struct linkea_data *ldata)
142 if (!mdd_object_exists(mdd_obj))
145 /* First try a small buf */
146 LASSERT(env != NULL);
147 ldata->ld_buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mdi_link_buf,
149 if (ldata->ld_buf->lb_buf == NULL)
152 rc = mdo_xattr_get(env, mdd_obj, ldata->ld_buf, XATTR_NAME_LINK);
154 /* Buf was too small, figure out what we need. */
155 lu_buf_free(ldata->ld_buf);
156 rc = mdo_xattr_get(env, mdd_obj, ldata->ld_buf,
160 ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc);
161 if (ldata->ld_buf->lb_buf == NULL)
163 rc = mdo_xattr_get(env, mdd_obj, ldata->ld_buf,
167 lu_buf_free(ldata->ld_buf);
168 ldata->ld_buf = NULL;
172 return linkea_init(ldata);
175 int mdd_links_read(const struct lu_env *env,
176 struct mdd_object *mdd_obj,
177 struct linkea_data *ldata)
181 rc = __mdd_links_read(env, mdd_obj, ldata);
183 rc = linkea_init(ldata);
188 static int mdd_links_read_with_rec(const struct lu_env *env,
189 struct mdd_object *mdd_obj,
190 struct linkea_data *ldata)
194 rc = __mdd_links_read(env, mdd_obj, ldata);
196 rc = linkea_init_with_rec(ldata);
202 * Get parent FID of the directory
204 * Read parent FID from linkEA, if that fails, then do lookup
205 * dotdot to get the parent FID.
207 * \param[in] env execution environment
208 * \param[in] obj object from which to find the parent FID
209 * \param[in] attr attribute of the object
210 * \param[out] fid fid to get the parent FID
212 * \retval 0 if getting the parent FID succeeds.
213 * \retval negative errno if getting the parent FID fails.
215 static inline int mdd_parent_fid(const struct lu_env *env,
216 struct mdd_object *obj,
217 const struct lu_attr *attr,
220 struct mdd_thread_info *info = mdd_env_info(env);
221 struct linkea_data ldata = { NULL };
222 struct lu_buf *buf = &info->mdi_link_buf;
223 struct lu_name lname;
228 LASSERTF(S_ISDIR(mdd_object_type(obj)),
229 "%s: FID "DFID" is not a directory type = %o\n",
230 mdd_obj_dev_name(obj), PFID(mdd_object_fid(obj)),
231 mdd_object_type(obj));
233 buf = lu_buf_check_and_alloc(buf, PATH_MAX);
234 if (buf->lb_buf == NULL)
235 GOTO(lookup, rc = 0);
238 rc = mdd_links_read_with_rec(env, obj, &ldata);
242 /* the obj is not locked, don't cache attributes */
243 mdd_invalidate(env, &obj->mod_obj);
245 LASSERT(ldata.ld_leh != NULL);
246 /* Directory should only have 1 parent */
247 if (ldata.ld_leh->leh_reccount > 1)
250 ldata.ld_lee = (struct link_ea_entry *)(ldata.ld_leh + 1);
252 linkea_entry_unpack(ldata.ld_lee, &ldata.ld_reclen, &lname, fid);
253 if (likely(fid_is_sane(fid)))
256 rc = __mdd_lookup(env, &obj->mod_obj, attr, &lname_dotdot, fid, 0);
261 * For root fid use special function, which does not compare version component
262 * of fid. Version component is different for root fids on all MDTs.
264 int mdd_is_root(struct mdd_device *mdd, const struct lu_fid *fid)
266 return fid_seq(&mdd->mdd_root_fid) == fid_seq(fid) &&
267 fid_oid(&mdd->mdd_root_fid) == fid_oid(fid);
271 * return 1: if \a tfid is the fid of the ancestor of \a mo;
273 * otherwise: values < 0, errors.
275 static int mdd_is_parent(const struct lu_env *env,
276 struct mdd_device *mdd,
277 struct mdd_object *mo,
278 const struct lu_attr *attr,
279 const struct lu_fid *tfid)
281 struct mdd_object *mp;
285 LASSERT(!lu_fid_eq(mdd_object_fid(mo), tfid));
286 pfid = &mdd_env_info(env)->mdi_fid;
288 if (mdd_is_root(mdd, mdd_object_fid(mo)))
291 if (mdd_is_root(mdd, tfid))
294 rc = mdd_parent_fid(env, mo, attr, pfid);
299 if (lu_fid_eq(pfid, tfid))
302 if (mdd_is_root(mdd, pfid))
305 mp = mdd_object_find(env, mdd, pfid);
309 if (!mdd_object_exists(mp)) {
310 mdd_object_put(env, mp);
314 rc = mdd_parent_fid(env, mp, attr, pfid);
315 mdd_object_put(env, mp);
324 * No permission check is needed.
326 * returns 1: if fid is ancestor of @mo;
327 * returns 0: if fid is not an ancestor of @mo;
328 * returns < 0: if error
330 int mdd_is_subdir(const struct lu_env *env, struct md_object *mo,
331 const struct lu_fid *fid)
333 struct mdd_device *mdd = mdo2mdd(mo);
334 struct lu_attr *attr = MDD_ENV_VAR(env, cattr);
338 if (!mdd_object_exists(md2mdd_obj(mo)))
341 if (!S_ISDIR(mdd_object_type(md2mdd_obj(mo))))
344 rc = mdd_la_get(env, md2mdd_obj(mo), attr);
348 rc = mdd_is_parent(env, mdd, md2mdd_obj(mo), attr, fid);
353 * Check that @dir contains no entries except (possibly) dot and dotdot.
358 * -ENOTDIR not a directory object
359 * -ENOTEMPTY not empty
363 int mdd_dir_is_empty(const struct lu_env *env, struct mdd_object *dir)
366 struct dt_object *obj;
367 const struct dt_it_ops *iops;
371 obj = mdd_object_child(dir);
372 if (!dt_try_as_dir(env, obj))
375 iops = &obj->do_index_ops->dio_it;
376 it = iops->init(env, obj, LUDA_64BITHASH);
378 result = iops->get(env, it, (const struct dt_key *)"");
381 for (result = 0, i = 0; result == 0 && i < 3; ++i)
382 result = iops->next(env, it);
385 else if (result == 1)
387 } else if (result == 0)
389 * Huh? Index contains no zero key?
396 result = PTR_ERR(it);
397 /* -ENODEV means no valid stripe */
398 if (result == -ENODEV)
405 * Determine if the target object can be hard linked, and right now it only
406 * checks if the link count reach the maximum limit. Note: for ldiskfs, the
407 * directory nlink count might exceed the maximum link count(see
408 * osd_object_ref_add), so it only check nlink for non-directories.
410 * \param[in] env thread environment
411 * \param[in] obj object being linked to
412 * \param[in] la attributes of \a obj
414 * \retval 0 if \a obj can be hard linked
415 * \retval negative error if \a obj is a directory or has too
418 static int __mdd_may_link(const struct lu_env *env, struct mdd_object *obj,
419 const struct lu_attr *la)
421 struct mdd_device *m = mdd_obj2mdd_dev(obj);
426 /* Subdir count limitation can be broken through
427 * (see osd_object_ref_add), so only check non-directory here. */
428 if (!S_ISDIR(la->la_mode) &&
429 la->la_nlink >= m->mdd_dt_conf.ddp_max_nlink)
436 * Check whether it may create the cobj under the pobj.
438 * \param[in] env execution environment
439 * \param[in] pobj the parent directory
440 * \param[in] pattr the attribute of the parent directory
441 * \param[in] cobj the child to be created
442 * \param[in] check_perm if check WRITE|EXEC permission for parent
444 * \retval = 0 create the child under this dir is allowed
445 * \retval negative errno create the child under this dir is
448 int mdd_may_create(const struct lu_env *env, struct mdd_object *pobj,
449 const struct lu_attr *pattr, struct mdd_object *cobj,
455 if (cobj && mdd_object_exists(cobj))
458 if (mdd_is_dead_obj(pobj))
462 rc = mdd_permission_internal_locked(env, pobj, pattr,
463 MAY_WRITE | MAY_EXEC,
469 * Check whether can unlink from the pobj in the case of "cobj == NULL".
471 int mdd_may_unlink(const struct lu_env *env, struct mdd_object *pobj,
472 const struct lu_attr *pattr, const struct lu_attr *attr)
477 if (mdd_is_dead_obj(pobj))
480 if (attr->la_flags & (LUSTRE_APPEND_FL | LUSTRE_IMMUTABLE_FL))
483 rc = mdd_permission_internal_locked(env, pobj, pattr,
484 MAY_WRITE | MAY_EXEC,
489 if (pattr->la_flags & LUSTRE_APPEND_FL)
496 * pobj == NULL is remote ops case, under such case, pobj's
497 * VTX feature has been checked already, no need check again.
499 static inline int mdd_is_sticky(const struct lu_env *env,
500 struct mdd_object *pobj,
501 const struct lu_attr *pattr,
502 struct mdd_object *cobj,
503 const struct lu_attr *cattr)
505 struct lu_ucred *uc = lu_ucred_assert(env);
508 LASSERT(pattr != NULL);
509 if (!(pattr->la_mode & S_ISVTX) ||
510 (pattr->la_uid == uc->uc_fsuid))
514 LASSERT(cattr != NULL);
515 if (cattr->la_uid == uc->uc_fsuid)
518 return !cap_raised(uc->uc_cap, CAP_FOWNER);
521 static int mdd_may_delete_entry(const struct lu_env *env,
522 struct mdd_object *pobj,
523 const struct lu_attr *pattr,
528 LASSERT(pobj != NULL);
529 if (!mdd_object_exists(pobj))
532 if (mdd_is_dead_obj(pobj))
537 rc = mdd_permission_internal_locked(env, pobj, pattr,
538 MAY_WRITE | MAY_EXEC,
544 if (pattr->la_flags & LUSTRE_APPEND_FL)
551 * Check whether it may delete the cobj from the pobj.
554 int mdd_may_delete(const struct lu_env *env, struct mdd_object *tpobj,
555 const struct lu_attr *tpattr, struct mdd_object *tobj,
556 const struct lu_attr *tattr, const struct lu_attr *cattr,
557 int check_perm, int check_empty)
563 LASSERT(tpattr != NULL);
564 rc = mdd_may_delete_entry(env, tpobj, tpattr, check_perm);
572 if (!mdd_object_exists(tobj))
575 if (mdd_is_dead_obj(tobj))
578 if (mdd_is_sticky(env, tpobj, tpattr, tobj, tattr))
581 if (tattr->la_flags & (LUSTRE_APPEND_FL | LUSTRE_IMMUTABLE_FL))
584 /* additional check the rename case */
586 if (S_ISDIR(cattr->la_mode)) {
587 if (!S_ISDIR(tattr->la_mode))
590 if (mdd_is_root(mdo2mdd(&tobj->mod_obj),
591 mdd_object_fid(tobj)))
593 } else if (S_ISDIR(tattr->la_mode))
597 if (S_ISDIR(tattr->la_mode) && check_empty)
598 rc = mdd_dir_is_empty(env, tobj);
604 * Check whether it can create the link file(linked to @src_obj) under
605 * the target directory(@tgt_obj), and src_obj has been locked by
608 * \param[in] env execution environment
609 * \param[in] tgt_obj the target directory
610 * \param[in] tattr attributes of target directory
611 * \param[in] lname the link name
612 * \param[in] src_obj source object for link
613 * \param[in] cattr attributes for source object
615 * \retval = 0 it is allowed to create the link file under tgt_obj
616 * \retval negative error not allowed to create the link file
618 static int mdd_link_sanity_check(const struct lu_env *env,
619 struct mdd_object *tgt_obj,
620 const struct lu_attr *tattr,
621 const struct lu_name *lname,
622 struct mdd_object *src_obj,
623 const struct lu_attr *cattr)
625 struct mdd_device *m = mdd_obj2mdd_dev(src_obj);
629 if (!mdd_object_exists(src_obj))
632 if (mdd_is_dead_obj(src_obj))
635 /* Local ops, no lookup before link, check filename length here. */
636 rc = mdd_name_check(env, m, lname);
640 if (cattr->la_flags & (LUSTRE_IMMUTABLE_FL | LUSTRE_APPEND_FL))
643 if (S_ISDIR(mdd_object_type(src_obj)))
646 LASSERT(src_obj != tgt_obj);
647 rc = mdd_may_create(env, tgt_obj, tattr, NULL, true);
651 rc = __mdd_may_link(env, src_obj, cattr);
656 static int __mdd_index_delete_only(const struct lu_env *env, struct mdd_object *pobj,
657 const char *name, struct thandle *handle)
659 struct dt_object *next = mdd_object_child(pobj);
663 if (dt_try_as_dir(env, next))
664 rc = dt_delete(env, next, (struct dt_key *)name, handle);
671 static int __mdd_index_insert_only(const struct lu_env *env,
672 struct mdd_object *pobj,
673 const struct lu_fid *lf, __u32 type,
674 const char *name, struct thandle *handle)
676 struct dt_object *next = mdd_object_child(pobj);
680 if (dt_try_as_dir(env, next)) {
681 struct dt_insert_rec *rec = &mdd_env_info(env)->mdi_dt_rec;
684 rec->rec_type = type;
685 rc = dt_insert(env, next, (const struct dt_rec *)rec,
686 (const struct dt_key *)name, handle);
693 /* insert named index, add reference if isdir */
694 static int __mdd_index_insert(const struct lu_env *env, struct mdd_object *pobj,
695 const struct lu_fid *lf, __u32 type,
696 const char *name, struct thandle *handle)
701 rc = __mdd_index_insert_only(env, pobj, lf, type, name, handle);
702 if (rc == 0 && S_ISDIR(type)) {
703 mdd_write_lock(env, pobj, DT_TGT_PARENT);
704 mdo_ref_add(env, pobj, handle);
705 mdd_write_unlock(env, pobj);
711 /* delete named index, drop reference if isdir */
712 static int __mdd_index_delete(const struct lu_env *env, struct mdd_object *pobj,
713 const char *name, int is_dir,
714 struct thandle *handle)
719 rc = __mdd_index_delete_only(env, pobj, name, handle);
720 if (rc == 0 && is_dir) {
721 mdd_write_lock(env, pobj, DT_TGT_PARENT);
722 mdo_ref_del(env, pobj, handle);
723 mdd_write_unlock(env, pobj);
729 static int mdd_llog_record_calc_size(const struct lu_env *env,
730 const struct lu_name *tname,
731 const struct lu_name *sname)
733 const struct lu_ucred *uc = lu_ucred(env);
734 enum changelog_rec_flags clf_flags = CLF_EXTRA_FLAGS;
735 enum changelog_rec_extra_flags crfe = CLFE_UIDGID | CLFE_NID;
738 clf_flags |= CLF_RENAME;
740 if (uc != NULL && uc->uc_jobid[0] != '\0')
741 clf_flags |= CLF_JOBID;
743 return llog_data_len(LLOG_CHANGELOG_HDR_SZ +
744 changelog_rec_offset(clf_flags, crfe) +
745 (tname != NULL ? tname->ln_namelen : 0) +
746 (sname != NULL ? 1 + sname->ln_namelen : 0));
749 int mdd_declare_changelog_store(const struct lu_env *env,
750 struct mdd_device *mdd,
751 enum changelog_rec_type type,
752 const struct lu_name *tname,
753 const struct lu_name *sname,
754 struct thandle *handle)
756 struct obd_device *obd = mdd2obd_dev(mdd);
757 struct llog_ctxt *ctxt;
758 struct llog_rec_hdr rec_hdr;
759 struct thandle *llog_th;
762 if (!mdd_changelog_enabled(env, mdd, type))
765 rec_hdr.lrh_len = mdd_llog_record_calc_size(env, tname, sname);
766 rec_hdr.lrh_type = CHANGELOG_REC;
768 ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
772 llog_th = thandle_get_sub(env, handle, ctxt->loc_handle->lgh_obj);
774 GOTO(out_put, rc = PTR_ERR(llog_th));
776 rc = llog_declare_add(env, ctxt->loc_handle, &rec_hdr, llog_th);
784 int mdd_changelog_write_rec(const struct lu_env *env,
785 struct llog_handle *loghandle,
786 struct llog_rec_hdr *r,
787 struct llog_cookie *cookie,
788 int idx, struct thandle *th)
792 if (r->lrh_type == CHANGELOG_REC) {
793 struct mdd_device *mdd;
794 struct llog_changelog_rec *rec;
796 mdd = lu2mdd_dev(loghandle->lgh_ctxt->loc_obd->obd_lu_dev);
797 rec = container_of(r, struct llog_changelog_rec, cr_hdr);
799 spin_lock(&mdd->mdd_cl.mc_lock);
800 rec->cr.cr_index = mdd->mdd_cl.mc_index + 1;
801 spin_unlock(&mdd->mdd_cl.mc_lock);
803 rc = llog_osd_ops.lop_write_rec(env, loghandle, r,
807 * if current llog is full, we will generate a new
808 * llog, and since it's actually not an error, let's
809 * avoid increasing index so that userspace apps
810 * should not see a gap in the changelog sequence
812 if (!(rc == -ENOSPC && llog_is_full(loghandle))) {
813 spin_lock(&mdd->mdd_cl.mc_lock);
814 ++mdd->mdd_cl.mc_index;
815 spin_unlock(&mdd->mdd_cl.mc_lock);
818 rc = llog_osd_ops.lop_write_rec(env, loghandle, r,
825 bool mdd_changelog_need_gc(const struct lu_env *env, struct mdd_device *mdd,
826 struct llog_handle *lgh)
828 unsigned long free_cat_entries = llog_cat_free_space(lgh);
829 struct mdd_changelog *mc = &mdd->mdd_cl;
831 return free_cat_entries <= mdd->mdd_changelog_min_free_cat_entries ||
832 mdd_changelog_is_too_idle(mdd, mc->mc_minrec, mc->mc_mintime) ||
833 OBD_FAIL_CHECK(OBD_FAIL_FORCE_GC_THREAD);
836 /** Add a changelog entry \a rec to the changelog llog
839 * \param handle - currently ignored since llogs start their own transaction;
840 * this will hopefully be fixed in llog rewrite
843 int mdd_changelog_store(const struct lu_env *env, struct mdd_device *mdd,
844 struct llog_changelog_rec *rec, struct thandle *th)
846 struct obd_device *obd = mdd2obd_dev(mdd);
847 struct llog_ctxt *ctxt;
848 struct thandle *llog_th;
852 rec->cr_hdr.lrh_len = llog_data_len(sizeof(*rec) +
853 changelog_rec_varsize(&rec->cr));
855 /* llog_lvfs_write_rec sets the llog tail len */
856 rec->cr_hdr.lrh_type = CHANGELOG_REC;
857 rec->cr.cr_time = cl_time();
859 ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT);
863 llog_th = thandle_get_sub(env, th, ctxt->loc_handle->lgh_obj);
865 GOTO(out_put, rc = PTR_ERR(llog_th));
867 OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_CHANGELOG_REORDER, cfs_fail_val);
868 /* nested journal transaction */
869 rc = llog_add(env, ctxt->loc_handle, &rec->cr_hdr, NULL, llog_th);
871 /* time to recover some space ?? */
872 if (likely(!mdd->mdd_changelog_gc ||
873 mdd->mdd_cl.mc_gc_task != MDD_CHLG_GC_NONE ||
874 mdd->mdd_changelog_min_gc_interval >=
875 ktime_get_real_seconds() - mdd->mdd_cl.mc_gc_time))
876 /* save a spin_lock trip */
879 if (OBD_FAIL_PRECHECK(OBD_FAIL_MDS_CHANGELOG_IDX_PUMP)) {
880 spin_lock(&mdd->mdd_cl.mc_lock);
881 mdd->mdd_cl.mc_index += cfs_fail_val;
882 spin_unlock(&mdd->mdd_cl.mc_lock);
885 need_gc = mdd_changelog_need_gc(env, mdd, ctxt->loc_handle);
886 spin_lock(&mdd->mdd_cl.mc_lock);
887 if (likely(mdd->mdd_changelog_gc &&
888 mdd->mdd_cl.mc_gc_task == MDD_CHLG_GC_NONE &&
889 ktime_get_real_seconds() - mdd->mdd_cl.mc_gc_time >
890 mdd->mdd_changelog_min_gc_interval)) {
891 if (unlikely(need_gc)) {
892 CWARN("%s:%s starting changelog garbage collection\n",
894 OBD_FAIL_CHECK(OBD_FAIL_FORCE_GC_THREAD) ?
896 /* indicate further kthread run will occur outside
897 * right after current journal transaction filling has
900 mdd->mdd_cl.mc_gc_task = MDD_CHLG_GC_NEED;
902 /* next check in mdd_changelog_min_gc_interval anyway
904 mdd->mdd_cl.mc_gc_time = ktime_get_real_seconds();
906 spin_unlock(&mdd->mdd_cl.mc_lock);
914 static void mdd_changelog_rec_ext_rename(struct changelog_rec *rec,
915 const struct lu_fid *sfid,
916 const struct lu_fid *spfid,
917 const struct lu_name *sname)
919 struct changelog_ext_rename *rnm = changelog_rec_rename(rec);
922 LASSERT(sfid != NULL);
923 LASSERT(spfid != NULL);
924 LASSERT(sname != NULL);
926 extsize = sname->ln_namelen + 1;
928 rnm->cr_sfid = *sfid;
929 rnm->cr_spfid = *spfid;
931 changelog_rec_name(rec)[rec->cr_namelen] = '\0';
932 strlcpy(changelog_rec_sname(rec), sname->ln_name, extsize);
933 rec->cr_namelen += extsize;
936 void mdd_changelog_rec_ext_jobid(struct changelog_rec *rec, const char *jobid)
938 struct changelog_ext_jobid *jid = changelog_rec_jobid(rec);
940 if (jobid == NULL || jobid[0] == '\0')
943 strlcpy(jid->cr_jobid, jobid, sizeof(jid->cr_jobid));
946 void mdd_changelog_rec_ext_extra_flags(struct changelog_rec *rec, __u64 eflags)
948 struct changelog_ext_extra_flags *ef = changelog_rec_extra_flags(rec);
950 ef->cr_extra_flags = eflags;
953 void mdd_changelog_rec_extra_uidgid(struct changelog_rec *rec,
954 __u64 uid, __u64 gid)
956 struct changelog_ext_uidgid *uidgid = changelog_rec_uidgid(rec);
958 uidgid->cr_uid = uid;
959 uidgid->cr_gid = gid;
962 void mdd_changelog_rec_extra_nid(struct changelog_rec *rec,
965 struct changelog_ext_nid *clnid = changelog_rec_nid(rec);
970 void mdd_changelog_rec_extra_omode(struct changelog_rec *rec, u32 flags)
972 struct changelog_ext_openmode *omd = changelog_rec_openmode(rec);
974 omd->cr_openflags = flags;
977 void mdd_changelog_rec_extra_xattr(struct changelog_rec *rec,
978 const char *xattr_name)
980 struct changelog_ext_xattr *xattr = changelog_rec_xattr(rec);
982 strlcpy(xattr->cr_xattr, xattr_name, sizeof(xattr->cr_xattr));
985 /** Store a namespace change changelog record
986 * If this fails, we must fail the whole transaction; we don't
987 * want the change to commit without the log entry.
988 * \param target - mdd_object of change
989 * \param tpfid - target parent dir/object fid
990 * \param sfid - source object fid
991 * \param spfid - source parent fid
992 * \param tname - target name string
993 * \param sname - source name string
994 * \param handle - transaction handle
996 int mdd_changelog_ns_store(const struct lu_env *env,
997 struct mdd_device *mdd,
998 enum changelog_rec_type type,
999 enum changelog_rec_flags clf_flags,
1000 struct mdd_object *target,
1001 const struct lu_fid *tpfid,
1002 const struct lu_fid *sfid,
1003 const struct lu_fid *spfid,
1004 const struct lu_name *tname,
1005 const struct lu_name *sname,
1006 struct thandle *handle)
1008 const struct lu_ucred *uc = lu_ucred(env);
1009 struct llog_changelog_rec *rec;
1012 __u64 xflags = CLFE_INVALID;
1016 if (!mdd_changelog_enabled(env, mdd, type))
1019 LASSERT(tpfid != NULL);
1020 LASSERT(tname != NULL);
1021 LASSERT(handle != NULL);
1023 reclen = mdd_llog_record_calc_size(env, tname, sname);
1024 buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mdi_chlg_buf, reclen);
1025 if (buf->lb_buf == NULL)
1029 clf_flags &= CLF_FLAGMASK;
1030 clf_flags |= CLF_EXTRA_FLAGS;
1033 if (uc->uc_jobid[0] != '\0')
1034 clf_flags |= CLF_JOBID;
1035 xflags |= CLFE_UIDGID;
1040 clf_flags |= CLF_RENAME;
1042 clf_flags |= CLF_VERSION;
1044 rec->cr.cr_flags = clf_flags;
1046 if (clf_flags & CLF_EXTRA_FLAGS) {
1047 mdd_changelog_rec_ext_extra_flags(&rec->cr, xflags);
1048 if (xflags & CLFE_UIDGID)
1049 mdd_changelog_rec_extra_uidgid(&rec->cr,
1050 uc->uc_uid, uc->uc_gid);
1051 if (xflags & CLFE_NID)
1052 mdd_changelog_rec_extra_nid(&rec->cr, uc->uc_nid);
1055 rec->cr.cr_type = (__u32)type;
1056 rec->cr.cr_pfid = *tpfid;
1057 rec->cr.cr_namelen = tname->ln_namelen;
1058 memcpy(changelog_rec_name(&rec->cr), tname->ln_name, tname->ln_namelen);
1060 if (clf_flags & CLF_RENAME)
1061 mdd_changelog_rec_ext_rename(&rec->cr, sfid, spfid, sname);
1063 if (clf_flags & CLF_JOBID)
1064 mdd_changelog_rec_ext_jobid(&rec->cr, uc->uc_jobid);
1066 if (likely(target != NULL)) {
1067 rec->cr.cr_tfid = *mdd_object_fid(target);
1068 target->mod_cltime = ktime_get();
1070 fid_zero(&rec->cr.cr_tfid);
1073 rc = mdd_changelog_store(env, mdd, rec, handle);
1075 CERROR("%s: cannot store changelog record: type = %d, "
1076 "name = '%s', t = "DFID", p = "DFID": rc = %d\n",
1077 mdd2obd_dev(mdd)->obd_name, type, tname->ln_name,
1078 PFID(&rec->cr.cr_tfid), PFID(&rec->cr.cr_pfid), rc);
1085 static int __mdd_links_add(const struct lu_env *env,
1086 struct mdd_object *mdd_obj,
1087 struct linkea_data *ldata,
1088 const struct lu_name *lname,
1089 const struct lu_fid *pfid,
1090 int first, int check)
1092 /* cattr is set in mdd_link */
1093 struct lu_attr *cattr = MDD_ENV_VAR(env, cattr);
1096 if (ldata->ld_leh == NULL) {
1097 rc = first ? -ENODATA : mdd_links_read(env, mdd_obj, ldata);
1101 rc = linkea_data_new(ldata,
1102 &mdd_env_info(env)->mdi_link_buf);
1109 rc = linkea_links_find(ldata, lname, pfid);
1110 if (rc && rc != -ENOENT)
1116 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LINKEA_MORE)) {
1117 struct lu_fid *tfid = &mdd_env_info(env)->mdi_fid2;
1121 linkea_add_buf(ldata, lname, tfid, false);
1124 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LINKEA_MORE2))
1125 linkea_add_buf(ldata, lname, pfid, false);
1127 /* For encrypted file, we want to limit number of hard links to what
1128 * linkEA can contain. So ask to return error in case of overflow.
1129 * Currently linkEA stores 4KiB of links, that is 14 NAME_MAX links,
1130 * or 119 16-byte names.
1132 return linkea_add_buf(ldata, lname, pfid,
1133 cattr->la_valid & LA_FLAGS &&
1134 cattr->la_flags & LUSTRE_ENCRYPT_FL);
1137 static int __mdd_links_del(const struct lu_env *env,
1138 struct mdd_object *mdd_obj,
1139 struct linkea_data *ldata,
1140 const struct lu_name *lname,
1141 const struct lu_fid *pfid)
1143 /* cattr is set in mdd_link */
1144 struct lu_attr *cattr = MDD_ENV_VAR(env, cattr);
1147 if (ldata->ld_leh == NULL) {
1148 rc = mdd_links_read(env, mdd_obj, ldata);
1153 rc = linkea_links_find(ldata, lname, pfid);
1157 linkea_del_buf(ldata, lname,
1158 cattr->la_valid & LA_FLAGS &&
1159 cattr->la_flags & LUSTRE_ENCRYPT_FL);
1163 static int mdd_linkea_prepare(const struct lu_env *env,
1164 struct mdd_object *mdd_obj,
1165 const struct lu_fid *oldpfid,
1166 const struct lu_name *oldlname,
1167 const struct lu_fid *newpfid,
1168 const struct lu_name *newlname,
1169 int first, int check,
1170 struct linkea_data *ldata)
1175 if (OBD_FAIL_CHECK(OBD_FAIL_FID_IGIF))
1178 LASSERT(oldpfid != NULL || newpfid != NULL);
1180 if (mdd_obj->mod_flags & DEAD_OBJ)
1181 /* Unnecessary to update linkEA for dead object. */
1184 if (oldpfid != NULL) {
1185 rc = __mdd_links_del(env, mdd_obj, ldata, oldlname, oldpfid);
1187 if ((check == 1) || (rc != -ENODATA && rc != -ENOENT))
1190 /* No changes done. */
1195 /* If renaming, add the new record */
1196 if (newpfid != NULL)
1197 rc = __mdd_links_add(env, mdd_obj, ldata, newlname, newpfid,
1203 int mdd_links_rename(const struct lu_env *env,
1204 struct mdd_object *mdd_obj,
1205 const struct lu_fid *oldpfid,
1206 const struct lu_name *oldlname,
1207 const struct lu_fid *newpfid,
1208 const struct lu_name *newlname,
1209 struct thandle *handle,
1210 struct linkea_data *ldata,
1211 int first, int check)
1216 if (ldata == NULL) {
1217 ldata = &mdd_env_info(env)->mdi_link_data;
1218 memset(ldata, 0, sizeof(*ldata));
1219 rc = mdd_linkea_prepare(env, mdd_obj, oldpfid, oldlname,
1220 newpfid, newlname, first, check, ldata);
1225 if (!(mdd_obj->mod_flags & DEAD_OBJ))
1226 rc = mdd_links_write(env, mdd_obj, ldata, handle);
1232 if (newlname == NULL)
1233 CERROR("link_ea add failed %d "DFID"\n",
1234 rc, PFID(mdd_object_fid(mdd_obj)));
1235 else if (oldpfid == NULL)
1236 CERROR("link_ea add '%.*s' failed %d "DFID"\n",
1237 newlname->ln_namelen, newlname->ln_name, rc,
1238 PFID(mdd_object_fid(mdd_obj)));
1239 else if (newpfid == NULL)
1240 CERROR("link_ea del '%.*s' failed %d "DFID"\n",
1241 oldlname->ln_namelen, oldlname->ln_name, rc,
1242 PFID(mdd_object_fid(mdd_obj)));
1244 CERROR("link_ea rename '%.*s'->'%.*s' failed %d "DFID
1245 "\n", oldlname->ln_namelen, oldlname->ln_name,
1246 newlname->ln_namelen, newlname->ln_name, rc,
1247 PFID(mdd_object_fid(mdd_obj)));
1250 if (is_vmalloc_addr(ldata->ld_buf))
1251 /* if we vmalloced a large buffer drop it */
1252 lu_buf_free(ldata->ld_buf);
1257 static inline int mdd_links_add(const struct lu_env *env,
1258 struct mdd_object *mdd_obj,
1259 const struct lu_fid *pfid,
1260 const struct lu_name *lname,
1261 struct thandle *handle,
1262 struct linkea_data *ldata, int first)
1264 return mdd_links_rename(env, mdd_obj, NULL, NULL,
1265 pfid, lname, handle, ldata, first, 0);
1268 static inline int mdd_links_del(const struct lu_env *env,
1269 struct mdd_object *mdd_obj,
1270 const struct lu_fid *pfid,
1271 const struct lu_name *lname,
1272 struct thandle *handle)
1274 return mdd_links_rename(env, mdd_obj, pfid, lname,
1275 NULL, NULL, handle, NULL, 0, 0);
1278 /** Read the link EA into a temp buffer.
1279 * Uses the name_buf since it is generally large.
1280 * \retval IS_ERR err
1281 * \retval ptr to \a lu_buf (always \a mdi_link_buf)
1283 struct lu_buf *mdd_links_get(const struct lu_env *env,
1284 struct mdd_object *mdd_obj)
1286 struct linkea_data ldata = { NULL };
1289 rc = mdd_links_read(env, mdd_obj, &ldata);
1290 return rc ? ERR_PTR(rc) : ldata.ld_buf;
1293 int mdd_links_write(const struct lu_env *env, struct mdd_object *mdd_obj,
1294 struct linkea_data *ldata, struct thandle *handle)
1296 const struct lu_buf *buf;
1299 if (ldata == NULL || ldata->ld_buf == NULL ||
1300 ldata->ld_leh == NULL)
1303 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NO_LINKEA))
1307 buf = mdd_buf_get_const(env, ldata->ld_buf->lb_buf,
1308 ldata->ld_leh->leh_len);
1309 rc = mdo_xattr_set(env, mdd_obj, buf, XATTR_NAME_LINK, 0, handle);
1310 if (unlikely(rc == -ENOSPC)) {
1311 rc = linkea_overflow_shrink(ldata);
1319 static int mdd_declare_links_add(const struct lu_env *env,
1320 struct mdd_object *mdd_obj,
1321 struct thandle *handle,
1322 struct linkea_data *ldata)
1328 if (ldata != NULL && ldata->ld_leh != NULL) {
1329 ea_len = ldata->ld_leh->leh_len;
1330 linkea = ldata->ld_buf->lb_buf;
1332 ea_len = MAX_LINKEA_SIZE;
1336 rc = mdo_declare_xattr_set(env, mdd_obj,
1337 mdd_buf_get_const(env, linkea, ea_len),
1338 XATTR_NAME_LINK, 0, handle);
1343 static inline int mdd_declare_links_del(const struct lu_env *env,
1344 struct mdd_object *c,
1345 struct thandle *handle)
1349 /* For directory, the linkEA will be removed together
1350 * with the object. */
1351 if (!S_ISDIR(mdd_object_type(c)))
1352 rc = mdd_declare_links_add(env, c, handle, NULL);
1357 static int mdd_declare_link(const struct lu_env *env,
1358 struct mdd_device *mdd,
1359 struct mdd_object *p,
1360 struct mdd_object *c,
1361 const struct lu_name *name,
1362 struct thandle *handle,
1364 struct linkea_data *data)
1366 struct lu_fid tfid = *mdd_object_fid(c);
1369 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DANGLING3))
1370 tfid.f_oid = cfs_fail_val;
1372 rc = mdo_declare_index_insert(env, p, &tfid, mdd_object_type(c),
1373 name->ln_name, handle);
1377 rc = mdo_declare_ref_add(env, c, handle);
1381 la->la_valid = LA_CTIME | LA_MTIME;
1382 rc = mdo_declare_attr_set(env, p, la, handle);
1386 la->la_valid = LA_CTIME;
1387 rc = mdo_declare_attr_set(env, c, la, handle);
1391 rc = mdd_declare_links_add(env, c, handle, data);
1395 rc = mdd_declare_changelog_store(env, mdd, CL_HARDLINK, name, NULL,
1401 static int mdd_link(const struct lu_env *env, struct md_object *tgt_obj,
1402 struct md_object *src_obj, const struct lu_name *lname,
1405 const char *name = lname->ln_name;
1406 struct lu_attr *la = &mdd_env_info(env)->mdi_la_for_fix;
1407 struct mdd_object *mdd_tobj = md2mdd_obj(tgt_obj);
1408 struct mdd_object *mdd_sobj = md2mdd_obj(src_obj);
1409 struct lu_attr *cattr = MDD_ENV_VAR(env, cattr);
1410 struct lu_attr *tattr = MDD_ENV_VAR(env, tattr);
1411 struct mdd_device *mdd = mdo2mdd(src_obj);
1412 struct thandle *handle;
1413 struct lu_fid *tfid = &mdd_env_info(env)->mdi_fid2;
1414 struct linkea_data *ldata = &mdd_env_info(env)->mdi_link_data;
1418 rc = mdd_la_get(env, mdd_sobj, cattr);
1422 rc = mdd_la_get(env, mdd_tobj, tattr);
1427 * If we are using project inheritance, we only allow hard link
1428 * creation in our tree when the project IDs are the same;
1429 * otherwise the tree quota mechanism could be circumvented.
1431 if ((tattr->la_flags & LUSTRE_PROJINHERIT_FL) &&
1432 (tattr->la_projid != cattr->la_projid))
1435 handle = mdd_trans_create(env, mdd);
1437 GOTO(out_pending, rc = PTR_ERR(handle));
1439 memset(ldata, 0, sizeof(*ldata));
1441 LASSERT(ma->ma_attr.la_valid & LA_CTIME);
1442 la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime;
1444 /* Note: even this function will change ldata, but it comes from
1445 * thread_info, which is completely temporary and only seen in
1446 * this function, so we do not need reset ldata once it fails.*/
1447 rc = mdd_linkea_prepare(env, mdd_sobj, NULL, NULL,
1448 mdd_object_fid(mdd_tobj), lname, 0, 0, ldata);
1452 rc = mdd_declare_link(env, mdd, mdd_tobj, mdd_sobj, lname, handle,
1457 rc = mdd_trans_start(env, mdd, handle);
1461 mdd_write_lock(env, mdd_sobj, DT_TGT_CHILD);
1462 rc = mdd_link_sanity_check(env, mdd_tobj, tattr, lname, mdd_sobj,
1465 GOTO(out_unlock, rc);
1467 if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LESS_NLINK)) {
1468 rc = mdo_ref_add(env, mdd_sobj, handle);
1470 GOTO(out_unlock, rc);
1473 *tfid = *mdd_object_fid(mdd_sobj);
1474 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DANGLING3))
1475 tfid->f_oid = cfs_fail_val;
1477 rc = __mdd_index_insert_only(env, mdd_tobj, tfid,
1478 mdd_object_type(mdd_sobj), name, handle);
1480 mdo_ref_del(env, mdd_sobj, handle);
1481 GOTO(out_unlock, rc);
1484 la->la_valid = LA_CTIME | LA_MTIME;
1485 rc = mdd_update_time(env, mdd_tobj, tattr, la, handle);
1487 GOTO(out_unlock, rc);
1489 la->la_valid = LA_CTIME;
1490 rc = mdd_update_time(env, mdd_sobj, cattr, la, handle);
1492 /* Note: The failure of links_add should not cause the
1493 * link failure, so do not check return value. */
1494 mdd_links_add(env, mdd_sobj, mdd_object_fid(mdd_tobj),
1495 lname, handle, ldata, 0);
1499 mdd_write_unlock(env, mdd_sobj);
1501 rc = mdd_changelog_ns_store(env, mdd, CL_HARDLINK, 0, mdd_sobj,
1502 mdd_object_fid(mdd_tobj), NULL,
1503 NULL, lname, NULL, handle);
1505 rc = mdd_trans_stop(env, mdd, rc, handle);
1506 if (is_vmalloc_addr(ldata->ld_buf))
1507 /* if we vmalloced a large buffer drop it */
1508 lu_buf_free(ldata->ld_buf);
1513 static int mdd_mark_orphan_object(const struct lu_env *env,
1514 struct mdd_object *obj, struct thandle *handle,
1517 struct lu_attr *attr = MDD_ENV_VAR(env, la_for_start);
1520 attr->la_valid = LA_FLAGS;
1521 attr->la_flags = LUSTRE_ORPHAN_FL;
1524 rc = mdo_declare_attr_set(env, obj, attr, handle);
1526 rc = mdo_attr_set(env, obj, attr, handle);
1531 static int mdd_declare_finish_unlink(const struct lu_env *env,
1532 struct mdd_object *obj,
1533 struct thandle *handle)
1537 /* Sigh, we do not know if the unlink object will become orphan in
1538 * declare phase, but fortunately the flags here does not matter
1539 * in current declare implementation */
1540 rc = mdd_mark_orphan_object(env, obj, handle, true);
1544 rc = mdo_declare_destroy(env, obj, handle);
1548 rc = mdd_orphan_declare_insert(env, obj, mdd_object_type(obj), handle);
1552 return mdd_declare_links_del(env, obj, handle);
1555 /* caller should take a lock before calling */
1556 int mdd_finish_unlink(const struct lu_env *env,
1557 struct mdd_object *obj, struct md_attr *ma,
1558 struct mdd_object *pobj,
1559 const struct lu_name *lname,
1563 int is_dir = S_ISDIR(ma->ma_attr.la_mode);
1566 LASSERT(mdd_write_locked(env, obj) != 0);
1568 if (ma->ma_attr.la_nlink == 0 || is_dir) {
1569 /* add new orphan and the object
1570 * will be deleted during mdd_close() */
1571 obj->mod_flags |= DEAD_OBJ;
1572 if (obj->mod_count) {
1573 rc = mdd_orphan_insert(env, obj, th);
1575 CDEBUG(D_HA, "Object "DFID" is inserted into "
1576 "orphan list, open count = %d\n",
1577 PFID(mdd_object_fid(obj)),
1580 CERROR("Object "DFID" fail to be an orphan, "
1581 "open count = %d, maybe cause failed "
1583 PFID(mdd_object_fid(obj)),
1586 /* mark object as an orphan here, not
1587 * before mdd_orphan_insert() as racing
1588 * mdd_la_get() may propagate ORPHAN_OBJ
1589 * causing the asserition */
1590 rc = mdd_mark_orphan_object(env, obj, th, false);
1592 rc = mdo_destroy(env, obj, th);
1594 } else if (!is_dir) {
1595 /* old files may not have link ea; ignore errors */
1596 mdd_links_del(env, obj, mdd_object_fid(pobj), lname, th);
1604 * has mdd_write_lock on cobj already, but not on pobj yet
1606 int mdd_unlink_sanity_check(const struct lu_env *env, struct mdd_object *pobj,
1607 const struct lu_attr *pattr,
1608 struct mdd_object *cobj,
1609 const struct lu_attr *cattr)
1614 rc = mdd_may_delete(env, pobj, pattr, cobj, cattr, NULL, 1, 1);
1619 static int mdd_declare_unlink(const struct lu_env *env, struct mdd_device *mdd,
1620 struct mdd_object *p, struct mdd_object *c,
1621 const struct lu_name *name, struct md_attr *ma,
1622 struct thandle *handle, int no_name, int is_dir)
1624 struct lu_attr *la = &mdd_env_info(env)->mdi_la_for_fix;
1627 if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DANGLING2)) {
1628 if (likely(no_name == 0)) {
1629 rc = mdo_declare_index_delete(env, p, name->ln_name,
1636 rc = mdo_declare_ref_del(env, p, handle);
1642 LASSERT(ma->ma_attr.la_valid & LA_CTIME);
1643 la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime;
1644 la->la_valid = LA_CTIME | LA_MTIME;
1645 rc = mdo_declare_attr_set(env, p, la, handle);
1650 rc = mdo_declare_ref_del(env, c, handle);
1654 rc = mdo_declare_ref_del(env, c, handle);
1658 la->la_valid = LA_CTIME;
1659 rc = mdo_declare_attr_set(env, c, la, handle);
1663 rc = mdd_declare_finish_unlink(env, c, handle);
1667 /* FIXME: need changelog for remove entry */
1668 rc = mdd_declare_changelog_store(env, mdd, CL_UNLINK, name,
1676 * test if a file has an HSM archive
1677 * if HSM attributes are not found in ma update them from
1680 static bool mdd_hsm_archive_exists(const struct lu_env *env,
1681 struct mdd_object *obj,
1686 if (!(ma->ma_valid & MA_HSM)) {
1687 /* no HSM MD provided, read xattr */
1688 struct lu_buf *hsm_buf;
1689 const size_t buflen = sizeof(struct hsm_attrs);
1692 hsm_buf = mdd_buf_get(env, NULL, 0);
1693 lu_buf_alloc(hsm_buf, buflen);
1694 rc = mdo_xattr_get(env, obj, hsm_buf, XATTR_NAME_HSM);
1695 rc = lustre_buf2hsm(hsm_buf->lb_buf, rc, &ma->ma_hsm);
1696 lu_buf_free(hsm_buf);
1700 ma->ma_valid |= MA_HSM;
1702 if (ma->ma_hsm.mh_flags & HS_EXISTS)
1708 * Delete name entry and the object.
1709 * Note: no_name == 1 means it only destory the object, i.e. name_entry
1710 * does not exist for this object, and it could only happen during resending
1711 * of remote unlink. see the comments in mdt_reint_unlink. Unfortunately, lname
1712 * is also needed in this case(needed by changelog), so we have to add another
1713 * parameter(no_name)here. XXX: this is only needed in DNE phase I, on Phase II,
1714 * the ENOENT failure should be able to be fixed by redo mechanism.
1716 static int mdd_unlink(const struct lu_env *env, struct md_object *pobj,
1717 struct md_object *cobj, const struct lu_name *lname,
1718 struct md_attr *ma, int no_name)
1720 char *name = (char *)lname->ln_name;
1721 struct lu_attr *pattr = MDD_ENV_VAR(env, pattr);
1722 struct lu_attr *cattr = MDD_ENV_VAR(env, cattr);
1723 struct lu_attr *la = &mdd_env_info(env)->mdi_la_for_fix;
1724 struct mdd_object *mdd_pobj = md2mdd_obj(pobj);
1725 struct mdd_object *mdd_cobj = NULL;
1726 struct mdd_device *mdd = mdo2mdd(pobj);
1727 struct thandle *handle;
1728 int rc, is_dir = 0, cl_flags = 0;
1731 /* let shutdown to start */
1732 CFS_FAIL_TIMEOUT(OBD_FAIL_TGT_REPLY_DATA_RACE, 1);
1734 /* cobj == NULL means only delete name entry */
1735 if (likely(cobj != NULL)) {
1736 mdd_cobj = md2mdd_obj(cobj);
1737 if (mdd_object_exists(mdd_cobj) == 0)
1741 rc = mdd_la_get(env, mdd_pobj, pattr);
1745 if (likely(mdd_cobj != NULL)) {
1747 rc = mdd_la_get(env, mdd_cobj, cattr);
1751 is_dir = S_ISDIR(cattr->la_mode);
1752 /* search for an existing archive.
1753 * we should check ahead as the object
1754 * can be destroyed in this transaction */
1755 if (mdd_hsm_archive_exists(env, mdd_cobj, ma))
1756 cl_flags |= CLF_UNLINK_HSM_EXISTS;
1759 rc = mdd_unlink_sanity_check(env, mdd_pobj, pattr, mdd_cobj, cattr);
1763 handle = mdd_trans_create(env, mdd);
1765 RETURN(PTR_ERR(handle));
1767 rc = mdd_declare_unlink(env, mdd, mdd_pobj, mdd_cobj,
1768 lname, ma, handle, no_name, is_dir);
1772 rc = mdd_trans_start(env, mdd, handle);
1776 if (likely(mdd_cobj != NULL))
1777 mdd_write_lock(env, mdd_cobj, DT_TGT_CHILD);
1779 if (lname->ln_name[lname->ln_namelen] != '\0') {
1780 /* lname->ln_name is not necessarily NUL terminated */
1781 name = kmalloc(lname->ln_namelen + 1, GFP_NOFS);
1783 GOTO(cleanup, rc = -ENOMEM);
1785 memcpy(name, lname->ln_name, lname->ln_namelen);
1786 name[lname->ln_namelen] = '\0';
1789 if (likely(no_name == 0) && !OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DANGLING2)) {
1790 rc = __mdd_index_delete(env, mdd_pobj, name, is_dir, handle);
1795 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_MUL_REF) ||
1796 OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NO_NAMEENTRY))
1797 GOTO(cleanup, rc = 0);
1799 if (likely(mdd_cobj != NULL)) {
1800 rc = mdo_ref_del(env, mdd_cobj, handle);
1802 __mdd_index_insert_only(env, mdd_pobj,
1803 mdd_object_fid(mdd_cobj),
1804 mdd_object_type(mdd_cobj),
1811 mdo_ref_del(env, mdd_cobj, handle);
1813 /* fetch updated nlink */
1814 rc = mdd_la_get(env, mdd_cobj, cattr);
1819 LASSERT(ma->ma_attr.la_valid & LA_CTIME);
1820 la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime;
1822 la->la_valid = LA_CTIME | LA_MTIME;
1823 rc = mdd_update_time(env, mdd_pobj, pattr, la, handle);
1827 /* Enough for only unlink the entry */
1828 if (unlikely(mdd_cobj == NULL))
1831 if (cattr->la_nlink > 0 || mdd_cobj->mod_count > 0) {
1832 /* update ctime of an unlinked file only if it is still
1833 * opened or a link still exists */
1834 la->la_valid = LA_CTIME;
1835 rc = mdd_update_time(env, mdd_cobj, cattr, la, handle);
1840 /* XXX: this transfer to ma will be removed with LOD/OSP */
1841 ma->ma_attr = *cattr;
1842 ma->ma_valid |= MA_INODE;
1843 rc = mdd_finish_unlink(env, mdd_cobj, ma, mdd_pobj, lname, handle);
1847 /* fetch updated nlink */
1848 rc = mdd_la_get(env, mdd_cobj, cattr);
1849 /* if object is removed then we can't get its attrs,
1851 if (rc == -ENOENT) {
1852 cattr->la_nlink = 0;
1856 if (cattr->la_nlink == 0) {
1857 ma->ma_attr = *cattr;
1858 ma->ma_valid |= MA_INODE;
1863 if (name != lname->ln_name)
1866 if (likely(mdd_cobj != NULL))
1867 mdd_write_unlock(env, mdd_cobj);
1870 if (cattr->la_nlink == 0)
1871 cl_flags |= CLF_UNLINK_LAST;
1873 cl_flags &= ~CLF_UNLINK_HSM_EXISTS;
1875 rc = mdd_changelog_ns_store(env, mdd,
1876 is_dir ? CL_RMDIR : CL_UNLINK, cl_flags,
1877 mdd_cobj, mdd_object_fid(mdd_pobj), NULL, NULL,
1878 lname, NULL, handle);
1882 rc = mdd_trans_stop(env, mdd, rc, handle);
1888 * The permission has been checked when obj created, no need check again.
1890 static int mdd_cd_sanity_check(const struct lu_env *env,
1891 struct mdd_object *obj)
1896 if (!obj || mdd_is_dead_obj(obj))
1902 static int mdd_create_data(const struct lu_env *env, struct md_object *pobj,
1903 struct md_object *cobj,
1904 const struct md_op_spec *spec, struct md_attr *ma)
1906 struct mdd_device *mdd = mdo2mdd(cobj);
1907 struct mdd_object *mdd_pobj = md2mdd_obj(pobj);
1908 struct mdd_object *son = md2mdd_obj(cobj);
1909 struct thandle *handle;
1910 const struct lu_buf *buf;
1911 struct lu_attr *attr = MDD_ENV_VAR(env, cattr);
1912 struct dt_allocation_hint *hint = &mdd_env_info(env)->mdi_hint;
1916 rc = mdd_cd_sanity_check(env, son);
1920 if (!md_should_create(spec->sp_cr_flags))
1924 * there are following use cases for this function:
1925 * 1) late striping - file was created with MDS_OPEN_DELAY_CREATE
1926 * striping can be specified or not
1929 rc = mdd_la_get(env, son, attr);
1933 /* calling ->ah_make_hint() is used to transfer information from parent */
1934 mdd_object_make_hint(env, mdd_pobj, son, attr, spec, hint);
1936 handle = mdd_trans_create(env, mdd);
1938 GOTO(out_free, rc = PTR_ERR(handle));
1941 * XXX: Setting the lov ea is not locked but setting the attr is locked?
1942 * Should this be fixed?
1944 CDEBUG(D_OTHER, "ea %p/%u, cr_flags %#llo, no_create %u\n",
1945 spec->u.sp_ea.eadata, spec->u.sp_ea.eadatalen,
1946 spec->sp_cr_flags, spec->no_create);
1948 if (spec->no_create || (spec->sp_cr_flags & MDS_OPEN_HAS_EA)) {
1949 buf = mdd_buf_get_const(env, spec->u.sp_ea.eadata,
1950 spec->u.sp_ea.eadatalen);
1955 rc = dt_declare_xattr_set(env, mdd_object_child(son), buf,
1956 XATTR_NAME_LOV, 0, handle);
1960 rc = mdd_declare_changelog_store(env, mdd, CL_LAYOUT, NULL, NULL,
1965 rc = mdd_trans_start(env, mdd, handle);
1969 rc = dt_xattr_set(env, mdd_object_child(son), buf, XATTR_NAME_LOV,
1975 rc = mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, son, handle,
1979 rc = mdd_trans_stop(env, mdd, rc, handle);
1985 static int mdd_declare_object_initialize(const struct lu_env *env,
1986 struct mdd_object *parent,
1987 struct mdd_object *child,
1988 const struct lu_attr *attr,
1989 struct thandle *handle)
1994 LASSERT(attr->la_valid & (LA_MODE | LA_TYPE));
1995 if (!S_ISDIR(attr->la_mode))
1998 rc = mdo_declare_index_insert(env, child, mdd_object_fid(child),
1999 S_IFDIR, dot, handle);
2003 rc = mdo_declare_ref_add(env, child, handle);
2007 rc = mdo_declare_index_insert(env, child, mdd_object_fid(parent),
2008 S_IFDIR, dotdot, handle);
2013 static int mdd_object_initialize(const struct lu_env *env,
2014 const struct lu_fid *pfid,
2015 struct mdd_object *child,
2016 struct lu_attr *attr,
2017 struct thandle *handle)
2022 if (S_ISDIR(attr->la_mode)) {
2023 /* Add "." and ".." for newly created dir */
2024 mdo_ref_add(env, child, handle);
2025 rc = __mdd_index_insert_only(env, child, mdd_object_fid(child),
2026 S_IFDIR, dot, handle);
2028 rc = __mdd_index_insert_only(env, child, pfid, S_IFDIR,
2031 mdo_ref_del(env, child, handle);
2038 * This function checks whether it can create a file/dir under the
2039 * directory(@pobj). The directory(@pobj) is not being locked by
2042 * \param[in] env execution environment
2043 * \param[in] pobj the directory to create files
2044 * \param[in] pattr the attributes of the directory
2045 * \param[in] lname the name of the created file/dir
2046 * \param[in] cattr the attributes of the file/dir
2047 * \param[in] spec create specification
2049 * \retval = 0 it is allowed to create file/dir under
2051 * \retval negative error not allowed to create file/dir
2052 * under the directory
2054 static int mdd_create_sanity_check(const struct lu_env *env,
2055 struct md_object *pobj,
2056 const struct lu_attr *pattr,
2057 const struct lu_name *lname,
2058 struct lu_attr *cattr,
2059 struct md_op_spec *spec)
2061 struct mdd_thread_info *info = mdd_env_info(env);
2062 struct lu_fid *fid = &info->mdi_fid;
2063 struct mdd_object *obj = md2mdd_obj(pobj);
2064 struct mdd_device *m = mdo2mdd(pobj);
2065 bool check_perm = true;
2070 if (mdd_is_dead_obj(obj))
2074 * In some cases this lookup is not needed - we know before if name
2075 * exists or not because MDT performs lookup for it.
2076 * name length check is done in lookup.
2078 if (spec->sp_cr_lookup) {
2080 * Check if the name already exist, though it will be checked in
2081 * _index_insert also, for avoiding rolling back if exists
2084 rc = __mdd_lookup(env, pobj, pattr, lname, fid,
2085 MAY_WRITE | MAY_EXEC);
2087 RETURN(rc ? : -EEXIST);
2089 /* Permission is already being checked in mdd_lookup */
2093 if (S_ISDIR(cattr->la_mode) &&
2094 unlikely(spec != NULL && spec->sp_cr_flags & MDS_OPEN_HAS_EA) &&
2095 spec->u.sp_ea.eadata != NULL && spec->u.sp_ea.eadatalen > 0) {
2096 const struct lmv_user_md *lum = spec->u.sp_ea.eadata;
2098 if (!lmv_user_magic_supported(le32_to_cpu(lum->lum_magic)) &&
2099 le32_to_cpu(lum->lum_magic) != LMV_USER_MAGIC_V0) {
2101 CERROR("%s: invalid lmv_user_md: magic = %x, "
2102 "stripe_offset = %d, stripe_count = %u: "
2103 "rc = %d\n", mdd2obd_dev(m)->obd_name,
2104 le32_to_cpu(lum->lum_magic),
2105 (int)le32_to_cpu(lum->lum_stripe_offset),
2106 le32_to_cpu(lum->lum_stripe_count), rc);
2111 rc = mdd_may_create(env, obj, pattr, NULL, check_perm);
2116 if (pattr->la_mode & S_ISGID) {
2117 struct lu_ucred *uc = lu_ucred(env);
2119 cattr->la_gid = pattr->la_gid;
2121 /* Directories are special, and always inherit S_ISGID */
2122 if (S_ISDIR(cattr->la_mode)) {
2123 cattr->la_mode |= S_ISGID;
2124 cattr->la_valid |= LA_MODE;
2125 } else if ((cattr->la_mode & (S_ISGID | S_IXGRP))
2126 == (S_ISGID | S_IXGRP) &&
2127 !lustre_in_group_p(uc,
2128 (cattr->la_valid & LA_GID) ?
2129 cattr->la_gid : pattr->la_gid) &&
2130 !cap_raised(uc->uc_cap, CAP_FSETID)) {
2131 cattr->la_mode &= ~S_ISGID;
2132 cattr->la_valid |= LA_MODE;
2136 /* Inherit project ID from parent directory */
2137 if (pattr->la_flags & LUSTRE_PROJINHERIT_FL) {
2138 cattr->la_projid = pattr->la_projid;
2139 if (S_ISDIR(cattr->la_mode)) {
2140 cattr->la_flags |= LUSTRE_PROJINHERIT_FL;
2141 cattr->la_valid |= LA_FLAGS;
2143 cattr->la_valid |= LA_PROJID;
2146 rc = mdd_name_check(env, m, lname);
2150 switch (cattr->la_mode & S_IFMT) {
2152 unsigned int symlen = spec->u.sp_symname.ln_namelen + 1;
2154 if (symlen > m->mdd_dt_conf.ddp_symlink_max)
2155 RETURN(-ENAMETOOLONG);
2174 static int mdd_declare_create_object(const struct lu_env *env,
2175 struct mdd_device *mdd,
2176 struct mdd_object *p, struct mdd_object *c,
2177 struct lu_attr *attr,
2178 struct thandle *handle,
2179 const struct md_op_spec *spec,
2180 struct lu_buf *def_acl_buf,
2181 struct lu_buf *acl_buf,
2182 struct lu_buf *hsm_buf,
2183 struct dt_allocation_hint *hint)
2185 const struct lu_buf *buf;
2188 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
2189 /* ldiskfs OSD needs this information for credit allocation */
2191 hint->dah_acl_len = def_acl_buf->lb_len;
2193 rc = mdd_declare_create_object_internal(env, p, c, attr, handle, spec,
2198 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
2199 if (def_acl_buf && def_acl_buf->lb_len > 0 && S_ISDIR(attr->la_mode)) {
2200 /* if dir, then can inherit default ACl */
2201 rc = mdo_declare_xattr_set(env, c, def_acl_buf,
2202 XATTR_NAME_ACL_DEFAULT,
2208 if (acl_buf && acl_buf->lb_len > 0) {
2209 rc = mdo_declare_attr_set(env, c, attr, handle);
2213 rc = mdo_declare_xattr_set(env, c, acl_buf,
2214 XATTR_NAME_ACL_ACCESS, 0, handle);
2219 rc = mdd_declare_object_initialize(env, p, c, attr, handle);
2223 /* replay case, create LOV EA from client data */
2224 if ((!(spec->sp_cr_flags & MDS_OPEN_DELAY_CREATE) && spec->no_create) ||
2225 (spec->sp_cr_flags & MDS_OPEN_HAS_EA && S_ISREG(attr->la_mode))) {
2226 buf = mdd_buf_get_const(env, spec->u.sp_ea.eadata,
2227 spec->u.sp_ea.eadatalen);
2228 rc = mdo_declare_xattr_set(env, c, buf,
2229 S_ISDIR(attr->la_mode) ?
2230 XATTR_NAME_LMV : XATTR_NAME_LOV,
2231 LU_XATTR_CREATE, handle);
2235 if (spec->sp_cr_flags & MDS_OPEN_PCC) {
2236 rc = mdo_declare_xattr_set(env, c, hsm_buf,
2244 if (S_ISLNK(attr->la_mode)) {
2245 const char *target_name = spec->u.sp_symname.ln_name;
2246 int sym_len = spec->u.sp_symname.ln_namelen;
2247 const struct lu_buf *buf;
2249 buf = mdd_buf_get_const(env, target_name, sym_len);
2250 rc = dt_declare_record_write(env, mdd_object_child(c),
2256 if (spec->sp_cr_file_secctx_name != NULL) {
2257 buf = mdd_buf_get_const(env, spec->sp_cr_file_secctx,
2258 spec->sp_cr_file_secctx_size);
2259 rc = mdo_declare_xattr_set(env, c, buf,
2260 spec->sp_cr_file_secctx_name, 0,
2266 if (spec->sp_cr_file_encctx != NULL) {
2267 buf = mdd_buf_get_const(env, spec->sp_cr_file_encctx,
2268 spec->sp_cr_file_encctx_size);
2269 rc = mdo_declare_xattr_set(env, c, buf,
2270 LL_XATTR_NAME_ENCRYPTION_CONTEXT, 0,
2279 static int mdd_declare_create(const struct lu_env *env, struct mdd_device *mdd,
2280 struct mdd_object *p, struct mdd_object *c,
2281 const struct lu_name *name,
2282 struct lu_attr *attr,
2283 struct thandle *handle,
2284 const struct md_op_spec *spec,
2285 struct linkea_data *ldata,
2286 struct lu_buf *def_acl_buf,
2287 struct lu_buf *acl_buf,
2288 struct lu_buf *hsm_buf,
2289 struct dt_allocation_hint *hint)
2293 rc = mdd_declare_create_object(env, mdd, p, c, attr, handle, spec,
2294 def_acl_buf, acl_buf, hsm_buf, hint);
2298 if (S_ISDIR(attr->la_mode)) {
2299 rc = mdo_declare_ref_add(env, p, handle);
2304 if (unlikely(spec->sp_cr_flags & MDS_OPEN_VOLATILE)) {
2305 rc = mdd_orphan_declare_insert(env, c, attr->la_mode, handle);
2309 struct lu_attr *la = &mdd_env_info(env)->mdi_la_for_fix;
2310 enum changelog_rec_type type;
2312 rc = mdo_declare_index_insert(env, p, mdd_object_fid(c),
2313 attr->la_mode, name->ln_name,
2318 rc = mdd_declare_links_add(env, c, handle, ldata);
2323 la->la_valid = LA_CTIME | LA_MTIME;
2324 rc = mdo_declare_attr_set(env, p, la, handle);
2328 type = S_ISDIR(attr->la_mode) ? CL_MKDIR :
2329 S_ISREG(attr->la_mode) ? CL_CREATE :
2330 S_ISLNK(attr->la_mode) ? CL_SOFTLINK : CL_MKNOD;
2332 rc = mdd_declare_changelog_store(env, mdd, type, name, NULL,
2341 static int mdd_acl_init(const struct lu_env *env, struct mdd_object *pobj,
2342 struct lu_attr *la, struct lu_buf *def_acl_buf,
2343 struct lu_buf *acl_buf)
2349 if (S_ISLNK(la->la_mode)) {
2350 acl_buf->lb_len = 0;
2351 def_acl_buf->lb_len = 0;
2355 mdd_read_lock(env, pobj, DT_TGT_PARENT);
2356 rc = mdo_xattr_get(env, pobj, def_acl_buf,
2357 XATTR_NAME_ACL_DEFAULT);
2358 mdd_read_unlock(env, pobj);
2360 /* ACL buffer size is not enough, need realloc */
2361 if (rc > acl_buf->lb_len)
2364 /* If there are default ACL, fix mode/ACL by default ACL */
2365 def_acl_buf->lb_len = rc;
2366 memcpy(acl_buf->lb_buf, def_acl_buf->lb_buf, rc);
2367 acl_buf->lb_len = rc;
2368 rc = __mdd_fix_mode_acl(env, acl_buf, &la->la_mode);
2371 } else if (rc == -ENODATA || rc == -EOPNOTSUPP) {
2372 /* If there are no default ACL, fix mode by mask */
2373 struct lu_ucred *uc = lu_ucred(env);
2375 /* The create triggered by MDT internal events, such as
2376 * LFSCK reset, will not contain valid "uc". */
2377 if (unlikely(uc != NULL))
2378 la->la_mode &= ~uc->uc_umask;
2380 acl_buf->lb_len = 0;
2381 def_acl_buf->lb_len = 0;
2388 * Create a metadata object and initialize it, set acl, xattr.
2390 static int mdd_create_object(const struct lu_env *env, struct mdd_object *pobj,
2391 struct mdd_object *son, struct lu_attr *attr,
2392 struct md_op_spec *spec, struct lu_buf *acl_buf,
2393 struct lu_buf *def_acl_buf,
2394 struct lu_buf *hsm_buf,
2395 struct dt_allocation_hint *hint,
2396 struct thandle *handle, bool initsecctx)
2398 const struct lu_buf *buf;
2401 mdd_write_lock(env, son, DT_TGT_CHILD);
2402 rc = mdd_create_object_internal(env, NULL, son, attr, handle, spec,
2407 /* Note: In DNE phase I, for striped dir, though sub-stripes will be
2408 * created in declare phase, they also needs to be added to master
2409 * object as sub-directory entry. So it has to initialize the master
2410 * object, then set dir striped EA.(in mdo_xattr_set) */
2411 rc = mdd_object_initialize(env, mdd_object_fid(pobj), son, attr,
2414 GOTO(err_destroy, rc);
2417 * in case of replay we just set LOVEA provided by the client
2418 * XXX: I think it would be interesting to try "old" way where
2419 * MDT calls this xattr_set(LOV) in a different transaction.
2420 * probably this way we code can be made better.
2423 /* During creation, there are only a few cases we need do xattr_set to
2425 * 1. regular file: see comments above.
2426 * 2. dir: inherit default striping or pool settings from parent.
2427 * 3. create striped directory with provided stripeEA.
2428 * 4. create striped directory because inherit default layout from the
2431 if (spec->no_create ||
2432 (S_ISREG(attr->la_mode) && spec->sp_cr_flags & MDS_OPEN_HAS_EA) ||
2433 S_ISDIR(attr->la_mode)) {
2434 buf = mdd_buf_get_const(env, spec->u.sp_ea.eadata,
2435 spec->u.sp_ea.eadatalen);
2436 rc = mdo_xattr_set(env, son, buf,
2437 S_ISDIR(attr->la_mode) ? XATTR_NAME_LMV :
2439 LU_XATTR_CREATE, handle);
2441 GOTO(err_destroy, rc);
2444 if (S_ISREG(attr->la_mode) && spec->sp_cr_flags & MDS_OPEN_PCC) {
2447 memset(&mh, 0, sizeof(mh));
2448 mh.mh_flags = HS_EXISTS | HS_ARCHIVED | HS_RELEASED;
2449 mh.mh_arch_id = spec->sp_archive_id;
2450 lustre_hsm2buf(hsm_buf->lb_buf, &mh);
2451 rc = mdo_xattr_set(env, son, hsm_buf, XATTR_NAME_HSM,
2454 GOTO(err_destroy, rc);
2457 #ifdef CONFIG_LUSTRE_FS_POSIX_ACL
2458 if (def_acl_buf != NULL && def_acl_buf->lb_len > 0 &&
2459 S_ISDIR(attr->la_mode)) {
2460 /* set default acl */
2461 rc = mdo_xattr_set(env, son, def_acl_buf,
2462 XATTR_NAME_ACL_DEFAULT, 0,
2465 GOTO(err_destroy, rc);
2467 /* set its own acl */
2468 if (acl_buf != NULL && acl_buf->lb_len > 0) {
2469 rc = mdo_xattr_set(env, son, acl_buf,
2470 XATTR_NAME_ACL_ACCESS,
2473 GOTO(err_destroy, rc);
2477 if (S_ISLNK(attr->la_mode)) {
2478 struct dt_object *dt = mdd_object_child(son);
2479 const char *target_name = spec->u.sp_symname.ln_name;
2480 int sym_len = spec->u.sp_symname.ln_namelen;
2483 buf = mdd_buf_get_const(env, target_name, sym_len);
2484 rc = dt->do_body_ops->dbo_write(env, dt, buf, &pos, handle);
2488 GOTO(err_initlized, rc = -EFAULT);
2491 if (initsecctx && spec->sp_cr_file_secctx_name != NULL) {
2492 buf = mdd_buf_get_const(env, spec->sp_cr_file_secctx,
2493 spec->sp_cr_file_secctx_size);
2494 rc = mdo_xattr_set(env, son, buf, spec->sp_cr_file_secctx_name,
2497 GOTO(err_initlized, rc);
2500 if (spec->sp_cr_file_encctx != NULL) {
2501 buf = mdd_buf_get_const(env, spec->sp_cr_file_encctx,
2502 spec->sp_cr_file_encctx_size);
2503 rc = mdo_xattr_set(env, son, buf,
2504 LL_XATTR_NAME_ENCRYPTION_CONTEXT, 0,
2507 GOTO(err_initlized, rc);
2511 if (unlikely(rc != 0)) {
2513 if (S_ISDIR(attr->la_mode)) {
2514 /* Drop the reference, no need to delete "."/"..",
2515 * because the object to be destroied directly. */
2516 rc2 = mdo_ref_del(env, son, handle);
2520 rc2 = mdo_ref_del(env, son, handle);
2524 mdo_destroy(env, son, handle);
2527 mdd_write_unlock(env, son);
2531 static int mdd_index_delete(const struct lu_env *env,
2532 struct mdd_object *mdd_pobj,
2533 struct lu_attr *cattr,
2534 const struct lu_name *lname)
2536 struct mdd_device *mdd = mdo2mdd(&mdd_pobj->mod_obj);
2537 struct thandle *handle;
2541 handle = mdd_trans_create(env, mdd);
2543 RETURN(PTR_ERR(handle));
2545 rc = mdo_declare_index_delete(env, mdd_pobj, lname->ln_name,
2550 if (S_ISDIR(cattr->la_mode)) {
2551 rc = mdo_declare_ref_del(env, mdd_pobj, handle);
2556 /* Since this will only be used in the error handler path,
2557 * Let's set the thandle to be local and not mess the transno */
2558 handle->th_local = 1;
2559 rc = mdd_trans_start(env, mdd, handle);
2563 rc = __mdd_index_delete(env, mdd_pobj, lname->ln_name,
2564 S_ISDIR(cattr->la_mode), handle);
2568 rc = mdd_trans_stop(env, mdd, rc, handle);
2574 * Create object and insert it into namespace.
2576 * Two operations have to be performed:
2578 * - an allocation of a new object (->do_create()), and
2579 * - an insertion into a parent index (->dio_insert()).
2581 * Due to locking, operation order is not important, when both are
2582 * successful, *but* error handling cases are quite different:
2584 * - if insertion is done first, and following object creation fails,
2585 * insertion has to be rolled back, but this operation might fail
2586 * also leaving us with dangling index entry.
2588 * - if creation is done first, is has to be undone if insertion fails,
2589 * leaving us with leaked space, which is not good but not fatal.
2591 * It seems that creation-first is simplest solution, but it is sub-optimal
2597 * case, because second mkdir is bound to create object, only to
2598 * destroy it immediately.
2600 * To avoid this follow local file systems that do double lookup:
2602 * 0. lookup -> -EEXIST (mdd_create_sanity_check())
2603 * 1. create (mdd_create_object_internal())
2604 * 2. insert (__mdd_index_insert(), lookup again)
2606 * \param[in] pobj parent object
2607 * \param[in] lname name of child being created
2608 * \param[in,out] child child object being created
2609 * \param[in] spec additional create parameters
2610 * \param[in] ma attributes for new child object
2612 * \retval 0 on success
2613 * \retval negative errno on failure
2615 int mdd_create(const struct lu_env *env, struct md_object *pobj,
2616 const struct lu_name *lname, struct md_object *child,
2617 struct md_op_spec *spec, struct md_attr *ma)
2619 struct mdd_thread_info *info = mdd_env_info(env);
2620 struct lu_attr *la = &info->mdi_la_for_fix;
2621 struct mdd_object *mdd_pobj = md2mdd_obj(pobj);
2622 struct mdd_object *son = md2mdd_obj(child);
2623 struct mdd_device *mdd = mdo2mdd(pobj);
2624 struct lu_attr *attr = &ma->ma_attr;
2625 struct thandle *handle;
2626 struct lu_attr *pattr = &info->mdi_pattr;
2627 struct lu_buf acl_buf;
2628 struct lu_buf def_acl_buf;
2629 struct lu_buf hsm_buf;
2630 struct linkea_data *ldata = &info->mdi_link_data;
2631 const char *name = lname->ln_name;
2632 struct dt_allocation_hint *hint = &mdd_env_info(env)->mdi_hint;
2633 int acl_size = LUSTRE_POSIX_ACL_MAX_SIZE_OLD;
2638 rc = mdd_la_get(env, mdd_pobj, pattr);
2642 /* Sanity checks before big job. */
2643 rc = mdd_create_sanity_check(env, pobj, pattr, lname, attr, spec);
2647 if (OBD_FAIL_CHECK(OBD_FAIL_MDS_DQACQ_NET))
2648 GOTO(out_free, rc = -EINPROGRESS);
2650 handle = mdd_trans_create(env, mdd);
2652 GOTO(out_free, rc = PTR_ERR(handle));
2655 acl_buf = *lu_buf_check_and_alloc(&info->mdi_xattr_buf, acl_size);
2656 if (!acl_buf.lb_buf)
2657 GOTO(out_stop, rc = -ENOMEM);
2659 def_acl_buf = *lu_buf_check_and_alloc(&info->mdi_big_buf, acl_size);
2660 if (!def_acl_buf.lb_buf)
2661 GOTO(out_stop, rc = -ENOMEM);
2663 rc = mdd_acl_init(env, mdd_pobj, attr, &def_acl_buf, &acl_buf);
2664 if (unlikely(rc == -ERANGE &&
2665 acl_size == LUSTRE_POSIX_ACL_MAX_SIZE_OLD)) {
2666 /* use maximum-sized xattr buffer for too-big default ACL */
2667 acl_size = min_t(unsigned int, mdd->mdd_dt_conf.ddp_max_ea_size,
2669 goto use_bigger_buffer;
2674 if (S_ISDIR(attr->la_mode)) {
2675 struct lmv_user_md *lmu = spec->u.sp_ea.eadata;
2678 * migrate may create 1-stripe directory, so lod_ah_init()
2679 * doesn't adjust stripe count from lmu.
2681 if (lmu && lmu->lum_stripe_count == cpu_to_le32(1))
2682 lmu->lum_stripe_count = 0;
2685 mdd_object_make_hint(env, mdd_pobj, son, attr, spec, hint);
2687 memset(ldata, 0, sizeof(*ldata));
2688 if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_PARENT)) {
2689 struct lu_fid tfid = *mdd_object_fid(mdd_pobj);
2692 rc = mdd_linkea_prepare(env, son, NULL, NULL,
2693 &tfid, lname, 1, 0, ldata);
2695 rc = mdd_linkea_prepare(env, son, NULL, NULL,
2696 mdd_object_fid(mdd_pobj),
2697 lname, 1, 0, ldata);
2700 if (spec->sp_cr_flags & MDS_OPEN_PCC) {
2701 LASSERT(spec->sp_cr_flags & MDS_OPEN_HAS_EA);
2703 memset(&hsm_buf, 0, sizeof(hsm_buf));
2704 lu_buf_alloc(&hsm_buf, sizeof(struct hsm_attrs));
2705 if (hsm_buf.lb_buf == NULL)
2706 GOTO(out_stop, rc = -ENOMEM);
2709 rc = mdd_declare_create(env, mdd, mdd_pobj, son, lname, attr,
2710 handle, spec, ldata, &def_acl_buf, &acl_buf,
2715 rc = mdd_trans_start(env, mdd, handle);
2719 rc = mdd_create_object(env, mdd_pobj, son, attr, spec, &acl_buf,
2720 &def_acl_buf, &hsm_buf, hint, handle, true);
2724 if (unlikely(spec->sp_cr_flags & MDS_OPEN_VOLATILE)) {
2725 mdd_write_lock(env, son, DT_TGT_CHILD);
2726 son->mod_flags |= VOLATILE_OBJ;
2727 rc = mdd_orphan_insert(env, son, handle);
2728 GOTO(out_volatile, rc);
2730 rc = __mdd_index_insert(env, mdd_pobj, mdd_object_fid(son),
2731 attr->la_mode, name, handle);
2733 GOTO(err_created, rc);
2735 mdd_links_add(env, son, mdd_object_fid(mdd_pobj), lname,
2738 /* update parent directory mtime/ctime */
2740 la->la_valid = LA_CTIME | LA_MTIME;
2741 rc = mdd_update_time(env, mdd_pobj, pattr, la, handle);
2743 GOTO(err_insert, rc);
2749 if (spec->sp_cr_flags & MDS_OPEN_VOLATILE)
2750 rc2 = mdd_orphan_delete(env, son, handle);
2752 rc2 = __mdd_index_delete(env, mdd_pobj, name,
2753 S_ISDIR(attr->la_mode),
2759 mdd_write_lock(env, son, DT_TGT_CHILD);
2760 if (S_ISDIR(attr->la_mode)) {
2761 /* Drop the reference, no need to delete "."/"..",
2762 * because the object is to be destroyed directly. */
2763 rc2 = mdo_ref_del(env, son, handle);
2765 mdd_write_unlock(env, son);
2770 /* For volatile files drop one link immediately, since there is
2771 * no filename in the namespace, and save any error returned. */
2772 rc2 = mdo_ref_del(env, son, handle);
2774 mdd_write_unlock(env, son);
2775 if (unlikely(rc == 0))
2780 /* Don't destroy the volatile object on success */
2781 if (likely(rc != 0))
2782 mdo_destroy(env, son, handle);
2783 mdd_write_unlock(env, son);
2786 if (rc == 0 && fid_is_namespace_visible(mdd_object_fid(son)) &&
2787 likely((spec->sp_cr_flags & MDS_OPEN_VOLATILE) == 0))
2788 rc = mdd_changelog_ns_store(env, mdd,
2789 S_ISDIR(attr->la_mode) ? CL_MKDIR :
2790 S_ISREG(attr->la_mode) ? CL_CREATE :
2791 S_ISLNK(attr->la_mode) ? CL_SOFTLINK : CL_MKNOD,
2792 0, son, mdd_object_fid(mdd_pobj), NULL, NULL,
2793 lname, NULL, handle);
2795 rc2 = mdd_trans_stop(env, mdd, rc, handle);
2797 /* If creation fails, it is most likely due to the remote update
2798 * failure, because local transaction will mostly succeed at
2799 * this stage. There is no easy way to rollback all of previous
2800 * updates, so let's remove the object from namespace, and
2801 * LFSCK should handle the orphan object. */
2802 if (rc2 < 0 && !mdd_object_remote(mdd_pobj))
2803 mdd_index_delete(env, mdd_pobj, attr, lname);
2807 if (is_vmalloc_addr(ldata->ld_buf))
2808 /* if we vmalloced a large buffer drop it */
2809 lu_buf_free(ldata->ld_buf);
2811 if (spec->sp_cr_flags & MDS_OPEN_PCC)
2812 lu_buf_free(&hsm_buf);
2814 /* The child object shouldn't be cached anymore */
2816 set_bit(LU_OBJECT_HEARD_BANSHEE,
2817 &child->mo_lu.lo_header->loh_flags);
2821 /* has not mdd_write{read}_lock on any obj yet. */
2822 static int mdd_rename_sanity_check(const struct lu_env *env,
2823 struct mdd_object *src_pobj,
2824 const struct lu_attr *pattr,
2825 struct mdd_object *tgt_pobj,
2826 const struct lu_attr *tpattr,
2827 struct mdd_object *sobj,
2828 const struct lu_attr *cattr,
2829 struct mdd_object *tobj,
2830 const struct lu_attr *tattr)
2835 /* XXX: when get here, sobj must NOT be NULL,
2836 * the other case has been processed in cld_rename
2837 * before mdd_rename and enable MDS_PERM_BYPASS. */
2841 * If we are using project inheritance, we only allow renames
2842 * into our tree when the project IDs are the same; otherwise
2843 * tree quota mechanism would be circumvented.
2845 if (((tpattr->la_flags & LUSTRE_PROJINHERIT_FL) &&
2846 tpattr->la_projid != cattr->la_projid) ||
2847 ((pattr->la_flags & LUSTRE_PROJINHERIT_FL) &&
2848 (pattr->la_projid != tpattr->la_projid)))
2851 /* we prevent an encrypted file from being renamed
2852 * into an unencrypted dir
2854 if ((pattr->la_valid & LA_FLAGS &&
2855 pattr->la_flags & LUSTRE_ENCRYPT_FL) &&
2856 !(tpattr->la_valid & LA_FLAGS &&
2857 tpattr->la_flags & LUSTRE_ENCRYPT_FL))
2860 rc = mdd_may_delete(env, src_pobj, pattr, sobj, cattr, NULL, 1, 0);
2864 /* XXX: when get here, "tobj == NULL" means tobj must
2865 * NOT exist (neither on remote MDS, such case has been
2866 * processed in cld_rename before mdd_rename and enable
2868 * So check may_create, but not check may_unlink. */
2870 rc = mdd_may_create(env, tgt_pobj, tpattr, NULL,
2871 (src_pobj != tgt_pobj));
2873 rc = mdd_may_delete(env, tgt_pobj, tpattr, tobj, tattr, cattr,
2874 (src_pobj != tgt_pobj), 1);
2876 if (!rc && !tobj && (src_pobj != tgt_pobj) && S_ISDIR(cattr->la_mode))
2877 rc = __mdd_may_link(env, tgt_pobj, tpattr);
2882 static int mdd_declare_rename(const struct lu_env *env,
2883 struct mdd_device *mdd,
2884 struct mdd_object *mdd_spobj,
2885 struct mdd_object *mdd_tpobj,
2886 struct mdd_object *mdd_sobj,
2887 struct mdd_object *mdd_tobj,
2888 const struct lu_name *sname,
2889 const struct lu_name *tname,
2891 struct linkea_data *ldata,
2892 struct thandle *handle)
2894 struct lu_attr *la = &mdd_env_info(env)->mdi_la_for_fix;
2897 LASSERT(ma->ma_attr.la_valid & LA_CTIME);
2898 la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime;
2904 /* name from source dir */
2905 rc = mdo_declare_index_delete(env, mdd_spobj, sname->ln_name, handle);
2909 /* .. from source child */
2910 if (S_ISDIR(mdd_object_type(mdd_sobj))) {
2911 /* source child can be directory, count by source dir's nlink */
2912 rc = mdo_declare_ref_del(env, mdd_spobj, handle);
2915 if (mdd_spobj != mdd_tpobj) {
2916 rc = mdo_declare_index_delete(env, mdd_sobj, dotdot,
2921 rc = mdo_declare_index_insert(env, mdd_sobj,
2922 mdd_object_fid(mdd_tpobj),
2923 S_IFDIR, dotdot, handle);
2928 /* new target child can be directory,
2929 * counted by target dir's nlink */
2930 rc = mdo_declare_ref_add(env, mdd_tpobj, handle);
2935 la->la_valid = LA_CTIME | LA_MTIME;
2936 rc = mdo_declare_attr_set(env, mdd_spobj, la, handle);
2940 rc = mdo_declare_attr_set(env, mdd_tpobj, la, handle);
2944 la->la_valid = LA_CTIME;
2945 rc = mdo_declare_attr_set(env, mdd_sobj, la, handle);
2949 rc = mdd_declare_links_add(env, mdd_sobj, handle, ldata);
2954 rc = mdo_declare_index_insert(env, mdd_tpobj, mdd_object_fid(mdd_sobj),
2955 mdd_object_type(mdd_sobj),
2956 tname->ln_name, handle);
2960 if (mdd_tobj && mdd_object_exists(mdd_tobj)) {
2961 /* delete target child in target parent directory */
2962 rc = mdo_declare_index_delete(env, mdd_tpobj, tname->ln_name,
2967 rc = mdo_declare_ref_del(env, mdd_tobj, handle);
2971 if (S_ISDIR(mdd_object_type(mdd_tobj))) {
2972 /* target child can be directory,
2973 * delete "." reference in target child directory */
2974 rc = mdo_declare_ref_del(env, mdd_tobj, handle);
2978 /* delete ".." reference in target parent directory */
2979 rc = mdo_declare_ref_del(env, mdd_tpobj, handle);
2984 la->la_valid = LA_CTIME;
2985 rc = mdo_declare_attr_set(env, mdd_tobj, la, handle);
2989 rc = mdd_declare_finish_unlink(env, mdd_tobj, handle);
2994 rc = mdd_declare_changelog_store(env, mdd, CL_RENAME, tname, sname,
3002 static int mdd_migrate_object(const struct lu_env *env,
3003 struct mdd_object *spobj,
3004 struct mdd_object *tpobj,
3005 struct mdd_object *sobj,
3006 struct mdd_object *tobj,
3007 const struct lu_name *sname,
3008 const struct lu_name *tname,
3009 struct md_op_spec *spec,
3010 struct md_attr *ma);
3012 /* src object can be remote that is why we use only fid and type of object */
3013 static int mdd_rename(const struct lu_env *env,
3014 struct md_object *src_pobj, struct md_object *tgt_pobj,
3015 const struct lu_fid *lf, const struct lu_name *lsname,
3016 struct md_object *tobj, const struct lu_name *ltname,
3019 const char *sname = lsname->ln_name;
3020 const char *tname = ltname->ln_name;
3021 struct lu_attr *la = &mdd_env_info(env)->mdi_la_for_fix;
3022 struct mdd_object *mdd_spobj = md2mdd_obj(src_pobj); /* source parent */
3023 struct mdd_object *mdd_tpobj = md2mdd_obj(tgt_pobj);
3024 struct mdd_device *mdd = mdo2mdd(src_pobj);
3025 struct mdd_object *mdd_sobj = NULL; /* source object */
3026 struct mdd_object *mdd_tobj = NULL;
3027 struct lu_attr *cattr = MDD_ENV_VAR(env, cattr);
3028 struct lu_attr *pattr = MDD_ENV_VAR(env, pattr);
3029 struct lu_attr *tattr = MDD_ENV_VAR(env, tattr);
3030 struct lu_attr *tpattr = MDD_ENV_VAR(env, tpattr);
3031 struct thandle *handle;
3032 struct linkea_data *ldata = &mdd_env_info(env)->mdi_link_data;
3033 const struct lu_fid *tpobj_fid = mdd_object_fid(mdd_tpobj);
3034 const struct lu_fid *spobj_fid = mdd_object_fid(mdd_spobj);
3037 bool tobj_locked = 0;
3038 unsigned cl_flags = 0;
3042 /* let unlink to complete and commit */
3043 CFS_FAIL_TIMEOUT(OBD_FAIL_TGT_REPLY_DATA_RACE, 2 + cfs_fail_val);
3046 mdd_tobj = md2mdd_obj(tobj);
3048 mdd_sobj = mdd_object_find(env, mdd, lf);
3049 if (IS_ERR(mdd_sobj))
3050 RETURN(PTR_ERR(mdd_sobj));
3052 rc = mdd_la_get(env, mdd_sobj, cattr);
3054 GOTO(out_pending, rc);
3056 /* if rename is cross MDTs, migrate symlink if it doesn't have other
3057 * hard links, and target doesn't exist.
3059 if (mdd_object_remote(mdd_sobj) && S_ISLNK(cattr->la_mode) &&
3060 cattr->la_nlink == 1 && !tobj) {
3061 struct md_op_spec *spec = &mdd_env_info(env)->mdi_spec;
3062 struct lu_device *ld = &mdd->mdd_md_dev.md_lu_dev;
3065 rc = ld->ld_ops->ldo_fid_alloc(env, ld, &tfid, &tgt_pobj->mo_lu,
3068 GOTO(out_pending, rc);
3070 mdd_tobj = mdd_object_find(env, mdd, &tfid);
3071 if (IS_ERR(mdd_tobj))
3072 GOTO(out_pending, rc = PTR_ERR(mdd_tobj));
3074 memset(spec, 0, sizeof(*spec));
3075 rc = mdd_migrate_object(env, mdd_spobj, mdd_tpobj, mdd_sobj,
3076 mdd_tobj, lsname, ltname, spec, ma);
3077 mdd_object_put(env, mdd_tobj);
3078 GOTO(out_pending, rc);
3081 rc = mdd_la_get(env, mdd_spobj, pattr);
3083 GOTO(out_pending, rc);
3086 rc = mdd_la_get(env, mdd_tobj, tattr);
3088 GOTO(out_pending, rc);
3089 /* search for an existing archive.
3090 * we should check ahead as the object
3091 * can be destroyed in this transaction */
3092 if (mdd_hsm_archive_exists(env, mdd_tobj, ma))
3093 cl_flags |= CLF_RENAME_LAST_EXISTS;
3096 rc = mdd_la_get(env, mdd_tpobj, tpattr);
3098 GOTO(out_pending, rc);
3100 rc = mdd_rename_sanity_check(env, mdd_spobj, pattr, mdd_tpobj, tpattr,
3101 mdd_sobj, cattr, mdd_tobj, tattr);
3103 GOTO(out_pending, rc);
3105 rc = mdd_name_check(env, mdd, ltname);
3107 GOTO(out_pending, rc);
3109 handle = mdd_trans_create(env, mdd);
3111 GOTO(out_pending, rc = PTR_ERR(handle));
3113 memset(ldata, 0, sizeof(*ldata));
3114 rc = mdd_linkea_prepare(env, mdd_sobj, mdd_object_fid(mdd_spobj),
3115 lsname, mdd_object_fid(mdd_tpobj), ltname,
3120 rc = mdd_declare_rename(env, mdd, mdd_spobj, mdd_tpobj, mdd_sobj,
3121 mdd_tobj, lsname, ltname, ma, ldata, handle);
3125 rc = mdd_trans_start(env, mdd, handle);
3129 is_dir = S_ISDIR(cattr->la_mode);
3131 /* Remove source name from source directory */
3132 rc = __mdd_index_delete(env, mdd_spobj, sname, is_dir, handle);
3136 /* "mv dir1 dir2" needs "dir1/.." link update */
3137 if (is_dir && !lu_fid_eq(spobj_fid, tpobj_fid)) {
3138 rc = __mdd_index_delete_only(env, mdd_sobj, dotdot, handle);
3140 GOTO(fixup_spobj2, rc);
3142 rc = __mdd_index_insert_only(env, mdd_sobj, tpobj_fid, S_IFDIR,
3145 GOTO(fixup_spobj, rc);
3148 if (mdd_tobj != NULL && mdd_object_exists(mdd_tobj)) {
3149 rc = __mdd_index_delete(env, mdd_tpobj, tname, is_dir, handle);
3151 /* tname might been renamed to something else */
3152 GOTO(fixup_spobj, rc);
3155 /* Insert new fid with target name into target dir */
3156 rc = __mdd_index_insert(env, mdd_tpobj, lf, cattr->la_mode,
3159 GOTO(fixup_tpobj, rc);
3161 LASSERT(ma->ma_attr.la_valid & LA_CTIME);
3162 la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime;
3164 /* XXX: mdd_sobj must be local one if it is NOT NULL. */
3165 la->la_valid = LA_CTIME;
3166 rc = mdd_update_time(env, mdd_sobj, cattr, la, handle);
3168 GOTO(fixup_tpobj, rc);
3170 /* Update the linkEA for the source object */
3171 mdd_write_lock(env, mdd_sobj, DT_SRC_CHILD);
3172 rc = mdd_links_rename(env, mdd_sobj, mdd_object_fid(mdd_spobj),
3173 lsname, mdd_object_fid(mdd_tpobj), ltname,
3174 handle, ldata, 0, 0);
3176 /* Old files might not have EA entry */
3177 mdd_links_add(env, mdd_sobj, mdd_object_fid(mdd_spobj),
3178 lsname, handle, NULL, 0);
3179 mdd_write_unlock(env, mdd_sobj);
3180 /* We don't fail the transaction if the link ea can't be
3181 updated -- fid2path will use alternate lookup method. */
3184 /* Remove old target object
3185 * For tobj is remote case cmm layer has processed
3186 * and set tobj to NULL then. So when tobj is NOT NULL,
3187 * it must be local one.
3189 if (tobj && mdd_object_exists(mdd_tobj)) {
3190 mdd_write_lock(env, mdd_tobj, DT_TGT_CHILD);
3192 if (mdd_is_dead_obj(mdd_tobj)) {
3193 /* shld not be dead, something is wrong */
3194 CERROR("tobj is dead, something is wrong\n");
3198 mdo_ref_del(env, mdd_tobj, handle);
3200 /* Remove dot reference. */
3201 if (S_ISDIR(tattr->la_mode))
3202 mdo_ref_del(env, mdd_tobj, handle);
3205 /* fetch updated nlink */
3206 rc = mdd_la_get(env, mdd_tobj, tattr);
3208 CERROR("%s: Failed to get nlink for tobj "
3210 mdd2obd_dev(mdd)->obd_name,
3211 PFID(tpobj_fid), rc);
3212 GOTO(fixup_tpobj, rc);
3215 la->la_valid = LA_CTIME;
3216 rc = mdd_update_time(env, mdd_tobj, tattr, la, handle);
3218 CERROR("%s: Failed to set ctime for tobj "
3220 mdd2obd_dev(mdd)->obd_name,
3221 PFID(tpobj_fid), rc);
3222 GOTO(fixup_tpobj, rc);
3225 /* XXX: this transfer to ma will be removed with LOD/OSP */
3226 ma->ma_attr = *tattr;
3227 ma->ma_valid |= MA_INODE;
3228 rc = mdd_finish_unlink(env, mdd_tobj, ma, mdd_tpobj, ltname,
3231 CERROR("%s: Failed to unlink tobj "
3233 mdd2obd_dev(mdd)->obd_name,
3234 PFID(tpobj_fid), rc);
3235 GOTO(fixup_tpobj, rc);
3238 /* fetch updated nlink */
3239 rc = mdd_la_get(env, mdd_tobj, tattr);
3240 if (rc == -ENOENT) {
3241 /* the object got removed, let's
3242 * return the latest known attributes */
3243 tattr->la_nlink = 0;
3245 } else if (rc != 0) {
3246 CERROR("%s: Failed to get nlink for tobj "
3248 mdd2obd_dev(mdd)->obd_name,
3249 PFID(tpobj_fid), rc);
3250 GOTO(fixup_tpobj, rc);
3252 /* XXX: this transfer to ma will be removed with LOD/OSP */
3253 ma->ma_attr = *tattr;
3254 ma->ma_valid |= MA_INODE;
3256 if (tattr->la_nlink == 0)
3257 cl_flags |= CLF_RENAME_LAST;
3259 cl_flags &= ~CLF_RENAME_LAST_EXISTS;
3262 la->la_valid = LA_CTIME | LA_MTIME;
3263 rc = mdd_update_time(env, mdd_spobj, pattr, la, handle);
3265 GOTO(fixup_tpobj, rc);
3267 if (mdd_spobj != mdd_tpobj) {
3268 la->la_valid = LA_CTIME | LA_MTIME;
3269 rc = mdd_update_time(env, mdd_tpobj, tpattr, la, handle);
3271 GOTO(fixup_tpobj, rc);
3278 rc2 = __mdd_index_delete(env, mdd_tpobj, tname, is_dir, handle);
3280 CWARN("tp obj fix error %d\n",rc2);
3282 if (mdd_tobj && mdd_object_exists(mdd_tobj) &&
3283 !mdd_is_dead_obj(mdd_tobj)) {
3285 mdo_ref_add(env, mdd_tobj, handle);
3287 mdo_ref_add(env, mdd_tobj, handle);
3290 rc2 = __mdd_index_insert(env, mdd_tpobj,
3291 mdd_object_fid(mdd_tobj),
3292 mdd_object_type(mdd_tobj),
3295 CWARN("tp obj fix error: rc = %d\n", rc2);
3300 if (rc && is_dir && mdd_sobj && mdd_spobj != mdd_tpobj) {
3301 rc2 = __mdd_index_delete_only(env, mdd_sobj, dotdot, handle);
3303 CWARN("%s: sp obj dotdot delete error: rc = %d\n",
3304 mdd2obd_dev(mdd)->obd_name, rc2);
3307 rc2 = __mdd_index_insert_only(env, mdd_sobj, spobj_fid, S_IFDIR,
3310 CWARN("%s: sp obj dotdot insert error: rc = %d\n",
3311 mdd2obd_dev(mdd)->obd_name, rc2);
3316 rc2 = __mdd_index_insert(env, mdd_spobj, lf,
3317 mdd_object_type(mdd_sobj), sname,
3320 CWARN("sp obj fix error: rc = %d\n", rc2);
3325 mdd_write_unlock(env, mdd_tobj);
3328 rc = mdd_changelog_ns_store(env, mdd, CL_RENAME, cl_flags,
3329 mdd_tobj, tpobj_fid, lf, spobj_fid,
3330 ltname, lsname, handle);
3333 rc = mdd_trans_stop(env, mdd, rc, handle);
3336 mdd_object_put(env, mdd_sobj);
3341 * Check whether we should migrate the file/dir
3343 * < 0 permission check failed or other error.
3344 * = 0 the file can be migrated.
3346 static int mdd_migrate_sanity_check(const struct lu_env *env,
3347 struct mdd_device *mdd,
3348 struct mdd_object *spobj,
3349 struct mdd_object *tpobj,
3350 struct mdd_object *sobj,
3351 struct mdd_object *tobj,
3352 const struct lu_attr *spattr,
3353 const struct lu_attr *tpattr,
3354 const struct lu_attr *attr)
3360 if (!mdd_object_remote(sobj)) {
3361 mdd_read_lock(env, sobj, DT_SRC_CHILD);
3362 if (sobj->mod_count > 0) {
3363 CDEBUG(D_INFO, "%s: "DFID" is opened, count %d\n",
3364 mdd_obj_dev_name(sobj),
3365 PFID(mdd_object_fid(sobj)),
3367 mdd_read_unlock(env, sobj);
3370 mdd_read_unlock(env, sobj);
3373 if (mdd_object_exists(tobj))
3376 rc = mdd_may_delete(env, spobj, spattr, sobj, attr, NULL, 1, 0);
3380 rc = mdd_may_create(env, tpobj, tpattr, NULL, true);
3385 struct mdd_xattr_entry {
3386 struct list_head mxe_linkage;
3388 struct lu_buf mxe_buf;
3392 struct lu_buf mx_namebuf;
3393 struct list_head mx_list;
3396 static inline void mdd_xattrs_init(struct mdd_xattrs *xattrs)
3398 INIT_LIST_HEAD(&xattrs->mx_list);
3399 xattrs->mx_namebuf.lb_buf = NULL;
3400 xattrs->mx_namebuf.lb_len = 0;
3403 static inline void mdd_xattrs_fini(struct mdd_xattrs *xattrs)
3405 struct mdd_xattr_entry *entry;
3406 struct mdd_xattr_entry *tmp;
3408 list_for_each_entry_safe(entry, tmp, &xattrs->mx_list, mxe_linkage) {
3409 lu_buf_free(&entry->mxe_buf);
3410 list_del(&entry->mxe_linkage);
3411 OBD_FREE_PTR(entry);
3414 lu_buf_free(&xattrs->mx_namebuf);
3417 /* read xattrs into buf, but skip LMA, LMV, LINKEA if 'skip_linkea' is
3418 * set, and DMV if 'skip_dmv" is set.
3420 static int mdd_xattrs_migrate_prep(const struct lu_env *env,
3421 struct mdd_xattrs *xattrs,
3422 struct mdd_object *sobj,
3426 struct mdd_xattr_entry *entry;
3436 list_xsize = mdo_xattr_list(env, sobj, &LU_BUF_NULL);
3437 if (list_xsize == -ENODATA)
3443 lu_buf_alloc(&xattrs->mx_namebuf, list_xsize);
3444 if (xattrs->mx_namebuf.lb_buf == NULL)
3447 rc = mdo_xattr_list(env, sobj, &xattrs->mx_namebuf);
3453 xname = xattrs->mx_namebuf.lb_buf;
3454 for (; rem > 0; xname += xlen, rem -= xlen) {
3455 xlen = strnlen(xname, rem - 1) + 1;
3456 if (strcmp(XATTR_NAME_LMA, xname) == 0 ||
3457 strcmp(XATTR_NAME_LMV, xname) == 0)
3461 strcmp(XATTR_NAME_LINK, xname) == 0)
3465 strcmp(XATTR_NAME_DEFAULT_LMV, xname) == 0)
3468 xsize = mdo_xattr_get(env, sobj, &LU_BUF_NULL, xname);
3469 if (xsize == -ENODATA)
3472 GOTO(fini, rc = xsize);
3474 OBD_ALLOC_PTR(entry);
3476 GOTO(fini, rc = -ENOMEM);
3478 lu_buf_alloc(&entry->mxe_buf, xsize);
3479 if (!entry->mxe_buf.lb_buf) {
3480 OBD_FREE_PTR(entry);
3481 GOTO(fini, rc = -ENOMEM);
3484 rc = mdo_xattr_get(env, sobj, &entry->mxe_buf, xname);
3486 lu_buf_free(&entry->mxe_buf);
3487 OBD_FREE_PTR(entry);
3493 entry->mxe_name = xname;
3494 list_add_tail(&entry->mxe_linkage, &xattrs->mx_list);
3499 mdd_xattrs_fini(xattrs);
3503 typedef int (*mdd_xattr_cb)(const struct lu_env *env,
3504 struct mdd_object *obj,
3505 const struct lu_buf *buf,
3507 int fl, struct thandle *handle);
3509 static int mdd_foreach_xattr(const struct lu_env *env,
3510 struct mdd_object *tobj,
3511 struct mdd_xattrs *xattrs,
3512 struct thandle *handle,
3515 struct mdd_xattr_entry *entry;
3518 list_for_each_entry(entry, &xattrs->mx_list, mxe_linkage) {
3519 rc = cb(env, tobj, &entry->mxe_buf, entry->mxe_name, 0, handle);
3527 typedef int (*mdd_linkea_cb)(const struct lu_env *env,
3528 struct mdd_object *sobj,
3529 struct mdd_object *tobj,
3530 const struct lu_name *sname,
3531 const struct lu_fid *sfid,
3532 const struct lu_name *lname,
3533 const struct lu_fid *fid,
3535 struct thandle *handle);
3537 static int mdd_declare_update_link(const struct lu_env *env,
3538 struct mdd_object *sobj,
3539 struct mdd_object *tobj,
3540 const struct lu_name *tname,
3541 const struct lu_fid *tpfid,
3542 const struct lu_name *lname,
3543 const struct lu_fid *fid,
3545 struct thandle *handle)
3547 struct mdd_device *mdd = mdo2mdd(&sobj->mod_obj);
3548 struct mdd_object *pobj;
3552 if (lu_fid_eq(tpfid, fid) && tname->ln_namelen == lname->ln_namelen &&
3553 !strcmp(tname->ln_name, lname->ln_name))
3556 pobj = mdd_object_find(env, mdd, fid);
3558 return PTR_ERR(pobj);
3561 rc = mdo_declare_index_delete(env, pobj, lname->ln_name, handle);
3563 rc = mdo_declare_index_insert(env, pobj, mdd_object_fid(tobj),
3564 mdd_object_type(sobj),
3565 lname->ln_name, handle);
3566 mdd_object_put(env, pobj);
3570 rc = mdo_declare_ref_add(env, tobj, handle);
3574 rc = mdo_declare_ref_del(env, sobj, handle);
3578 static int mdd_update_link(const struct lu_env *env,
3579 struct mdd_object *sobj,
3580 struct mdd_object *tobj,
3581 const struct lu_name *tname,
3582 const struct lu_fid *tpfid,
3583 const struct lu_name *lname,
3584 const struct lu_fid *fid,
3586 struct thandle *handle)
3588 struct mdd_device *mdd = mdo2mdd(&sobj->mod_obj);
3589 struct mdd_object *pobj;
3595 if (lu_fid_eq(tpfid, fid) && tname->ln_namelen == lname->ln_namelen &&
3596 !memcmp(tname->ln_name, lname->ln_name, lname->ln_namelen))
3599 CDEBUG(D_INFO, "update "DFID"/"DNAME":"DFID"\n",
3600 PFID(fid), PNAME(lname), PFID(mdd_object_fid(tobj)));
3602 pobj = mdd_object_find(env, mdd, fid);
3604 CWARN("%s: cannot find obj "DFID": %ld\n",
3605 mdd2obd_dev(mdd)->obd_name, PFID(fid), PTR_ERR(pobj));
3606 RETURN(PTR_ERR(pobj));
3609 if (!mdd_object_exists(pobj)) {
3610 CDEBUG(D_INFO, DFID" doesn't exist\n", PFID(fid));
3611 mdd_object_put(env, pobj);
3615 mdd_write_lock(env, pobj, DT_TGT_PARENT);
3616 rc = __mdd_index_delete_only(env, pobj, lname->ln_name, handle);
3618 rc = __mdd_index_insert_only(env, pobj, mdd_object_fid(tobj),
3619 mdd_object_type(sobj),
3620 lname->ln_name, handle);
3621 mdd_write_unlock(env, pobj);
3622 mdd_object_put(env, pobj);
3626 mdd_write_lock(env, tobj, DT_TGT_CHILD);
3627 rc = mdo_ref_add(env, tobj, handle);
3628 mdd_write_unlock(env, tobj);
3632 mdd_write_lock(env, sobj, DT_SRC_CHILD);
3633 rc = mdo_ref_del(env, sobj, handle);
3634 mdd_write_unlock(env, sobj);
3639 static inline int mdd_fld_lookup(const struct lu_env *env,
3640 struct mdd_device *mdd,
3641 const struct lu_fid *fid,
3644 struct lu_seq_range *range = &mdd_env_info(env)->mdi_range;
3645 struct seq_server_site *ss;
3648 ss = mdd->mdd_md_dev.md_lu_dev.ld_site->ld_seq_site;
3650 range->lsr_flags = LU_SEQ_RANGE_MDT;
3651 rc = fld_server_lookup(env, ss->ss_server_fld, fid->f_seq, range);
3655 *mdt_index = range->lsr_index;
3660 static int mdd_is_link_on_source_mdt(const struct lu_env *env,
3661 struct mdd_object *sobj,
3662 struct mdd_object *tobj,
3663 const struct lu_name *tname,
3664 const struct lu_fid *tpfid,
3665 const struct lu_name *lname,
3666 const struct lu_fid *fid,
3668 struct thandle *handle)
3670 struct mdd_device *mdd = mdo2mdd(&sobj->mod_obj);
3671 __u32 source_mdt_index = *(__u32 *)opaque;
3672 __u32 link_mdt_index;
3678 if (lu_fid_eq(tpfid, fid) && tname->ln_namelen == lname->ln_namelen &&
3679 !memcmp(tname->ln_name, lname->ln_name, lname->ln_namelen))
3682 rc = mdd_fld_lookup(env, mdd, fid, &link_mdt_index);
3686 RETURN(link_mdt_index == source_mdt_index);
3689 static int mdd_iterate_linkea(const struct lu_env *env,
3690 struct mdd_object *sobj,
3691 struct mdd_object *tobj,
3692 const struct lu_name *tname,
3693 const struct lu_fid *tpfid,
3694 struct linkea_data *ldata,
3696 struct thandle *handle,
3699 struct mdd_thread_info *info = mdd_env_info(env);
3700 char *filename = info->mdi_name;
3701 struct lu_name lname;
3708 for (linkea_first_entry(ldata); ldata->ld_lee && !rc;
3709 linkea_next_entry(ldata)) {
3710 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, &lname,
3713 /* Note: lname might miss \0 at the end */
3714 snprintf(filename, sizeof(info->mdi_name), "%.*s",
3715 lname.ln_namelen, lname.ln_name);
3716 lname.ln_name = filename;
3718 CDEBUG(D_INFO, DFID"/"DNAME"\n", PFID(&fid), PNAME(&lname));
3720 rc = cb(env, sobj, tobj, tname, tpfid, &lname, &fid, opaque,
3728 * Prepare linkea, and check whether file needs migrate: if source still has
3729 * link on source MDT, no need to migrate, just update namespace on source and
3732 * \retval 0 do migrate
3733 * \retval 1 don't migrate
3734 * \retval -errno on failure
3736 static int mdd_migrate_linkea_prepare(const struct lu_env *env,
3737 struct mdd_device *mdd,
3738 struct mdd_object *spobj,
3739 struct mdd_object *tpobj,
3740 struct mdd_object *sobj,
3741 const struct lu_name *sname,
3742 const struct lu_name *tname,
3743 const struct lu_attr *attr,
3744 struct linkea_data *ldata)
3746 __u32 source_mdt_index;
3751 memset(ldata, 0, sizeof(*ldata));
3752 rc = mdd_linkea_prepare(env, sobj, mdd_object_fid(spobj), sname,
3753 mdd_object_fid(tpobj), tname, 1, 0, ldata);
3758 * Then it will check if the file should be migrated. If the file has
3759 * mulitple links, we only need migrate the file if all of its entries
3760 * has been migrated to the remote MDT.
3762 if (S_ISDIR(attr->la_mode) || attr->la_nlink < 2)
3765 /* If there are still links locally, don't migrate this file */
3766 LASSERT(ldata->ld_leh != NULL);
3769 * If linkEA is overflow, it means there are some unknown name entries
3770 * under unknown parents, which will prevent the migration.
3772 if (unlikely(ldata->ld_leh->leh_overflow_time))
3775 rc = mdd_fld_lookup(env, mdd, mdd_object_fid(sobj), &source_mdt_index);
3779 rc = mdd_iterate_linkea(env, sobj, NULL, tname, mdd_object_fid(tpobj),
3780 ldata, &source_mdt_index, NULL,
3781 mdd_is_link_on_source_mdt);
3785 static int mdd_declare_migrate_update(const struct lu_env *env,
3786 struct mdd_object *spobj,
3787 struct mdd_object *tpobj,
3788 struct mdd_object *obj,
3789 const struct lu_name *sname,
3790 const struct lu_name *tname,
3791 struct lu_attr *attr,
3792 struct lu_attr *spattr,
3793 struct lu_attr *tpattr,
3794 struct linkea_data *ldata,
3796 struct thandle *handle)
3798 struct mdd_thread_info *info = mdd_env_info(env);
3799 struct lu_attr *la = &info->mdi_la_for_fix;
3802 rc = mdo_declare_index_delete(env, spobj, sname->ln_name, handle);
3806 if (S_ISDIR(attr->la_mode)) {
3807 rc = mdo_declare_ref_del(env, spobj, handle);
3812 rc = mdo_declare_index_insert(env, tpobj, mdd_object_fid(obj),
3813 attr->la_mode & S_IFMT,
3814 tname->ln_name, handle);
3818 rc = mdd_declare_links_add(env, obj, handle, ldata);
3822 if (S_ISDIR(attr->la_mode)) {
3823 rc = mdo_declare_ref_add(env, tpobj, handle);
3828 la->la_valid = LA_CTIME | LA_MTIME;
3829 rc = mdo_declare_attr_set(env, spobj, la, handle);
3833 if (tpobj != spobj) {
3834 rc = mdo_declare_attr_set(env, tpobj, la, handle);
3842 static int mdd_declare_migrate_create(const struct lu_env *env,
3843 struct mdd_object *spobj,
3844 struct mdd_object *tpobj,
3845 struct mdd_object *sobj,
3846 struct mdd_object *tobj,
3847 const struct lu_name *sname,
3848 const struct lu_name *tname,
3849 struct lu_attr *spattr,
3850 struct lu_attr *tpattr,
3851 struct lu_attr *attr,
3852 struct lu_buf *sbuf,
3853 struct linkea_data *ldata,
3854 struct mdd_xattrs *xattrs,
3856 struct md_op_spec *spec,
3857 struct dt_allocation_hint *hint,
3858 struct thandle *handle)
3860 struct mdd_thread_info *info = mdd_env_info(env);
3861 struct md_layout_change *mlc = &info->mdi_mlc;
3862 struct lmv_mds_md_v1 *lmv = sbuf->lb_buf;
3867 if (S_ISDIR(attr->la_mode)) {
3868 struct lmv_user_md *lum = spec->u.sp_ea.eadata;
3870 mlc->mlc_opc = MD_LAYOUT_DETACH;
3871 rc = mdo_declare_layout_change(env, sobj, mlc, handle);
3875 lum->lum_hash_type |= cpu_to_le32(LMV_HASH_FLAG_MIGRATION);
3876 } else if (S_ISLNK(attr->la_mode)) {
3877 spec->u.sp_symname.ln_name = sbuf->lb_buf;
3878 /* don't count NUL */
3879 spec->u.sp_symname.ln_namelen = sbuf->lb_len - 1;
3880 } else if (S_ISREG(attr->la_mode)) {
3881 spec->sp_cr_flags |= MDS_OPEN_DELAY_CREATE;
3882 spec->sp_cr_flags &= ~MDS_OPEN_HAS_EA;
3885 mdd_object_make_hint(env, tpobj, tobj, attr, spec, hint);
3887 rc = mdd_declare_create(env, mdo2mdd(&tpobj->mod_obj), tpobj, tobj,
3888 tname, attr, handle, spec, ldata, NULL, NULL,
3894 * tobj mode will be used in mdo_declare_layout_change(), but it's not
3895 * createb yet, copy from sobj.
3897 tobj->mod_obj.mo_lu.lo_header->loh_attr &= ~S_IFMT;
3898 tobj->mod_obj.mo_lu.lo_header->loh_attr |=
3899 sobj->mod_obj.mo_lu.lo_header->loh_attr & S_IFMT;
3901 if (S_ISDIR(attr->la_mode)) {
3903 /* if sobj is not striped, fake a 1-stripe LMV */
3904 LASSERT(sizeof(info->mdi_key) >
3905 lmv_mds_md_size(1, LMV_MAGIC_V1));
3906 lmv = (typeof(lmv))info->mdi_key;
3907 memset(lmv, 0, sizeof(*lmv));
3908 lmv->lmv_magic = cpu_to_le32(LMV_MAGIC_V1);
3909 lmv->lmv_stripe_count = cpu_to_le32(1);
3910 lmv->lmv_hash_type = cpu_to_le32(LMV_HASH_TYPE_DEFAULT);
3911 fid_le_to_cpu(&lmv->lmv_stripe_fids[0],
3912 mdd_object_fid(sobj));
3913 mlc->mlc_buf.lb_buf = lmv;
3914 mlc->mlc_buf.lb_len = lmv_mds_md_size(1, LMV_MAGIC_V1);
3916 mlc->mlc_buf = *sbuf;
3918 mlc->mlc_opc = MD_LAYOUT_ATTACH;
3919 rc = mdo_declare_layout_change(env, tobj, mlc, handle);
3924 rc = mdd_foreach_xattr(env, tobj, xattrs, handle,
3925 mdo_declare_xattr_set);
3929 if (S_ISREG(attr->la_mode)) {
3930 struct lu_buf fid_buf;
3932 handle->th_complex = 1;
3934 /* target may be remote, update PFID via sobj. */
3935 fid_buf.lb_buf = (void *)mdd_object_fid(tobj);
3936 fid_buf.lb_len = sizeof(struct lu_fid);
3937 rc = mdo_declare_xattr_set(env, sobj, &fid_buf, XATTR_NAME_FID,
3942 rc = mdo_declare_xattr_del(env, sobj, XATTR_NAME_LOV, handle);
3947 if (!S_ISDIR(attr->la_mode)) {
3948 rc = mdd_iterate_linkea(env, sobj, tobj, tname,
3949 mdd_object_fid(tpobj), ldata, NULL,
3950 handle, mdd_declare_update_link);
3955 if (!S_ISDIR(attr->la_mode) || lmv) {
3956 rc = mdo_declare_ref_del(env, sobj, handle);
3960 if (S_ISDIR(attr->la_mode)) {
3961 rc = mdo_declare_ref_del(env, sobj, handle);
3966 rc = mdo_declare_destroy(env, sobj, handle);
3971 rc = mdd_declare_migrate_update(env, spobj, tpobj, tobj, sname, tname,
3972 attr, spattr, tpattr, ldata, ma,
3978 * migrate dirent from \a spobj to \a tpobj.
3980 static int mdd_migrate_update(const struct lu_env *env,
3981 struct mdd_object *spobj,
3982 struct mdd_object *tpobj,
3983 struct mdd_object *obj,
3984 const struct lu_name *sname,
3985 const struct lu_name *tname,
3986 struct lu_attr *attr,
3987 struct lu_attr *spattr,
3988 struct lu_attr *tpattr,
3989 struct linkea_data *ldata,
3991 struct thandle *handle)
3993 struct mdd_thread_info *info = mdd_env_info(env);
3994 struct lu_attr *la = &info->mdi_la_for_fix;
3999 CDEBUG(D_INFO, "update "DFID" from "DFID"/%s to "DFID"/%s\n",
4000 PFID(mdd_object_fid(obj)), PFID(mdd_object_fid(spobj)),
4001 sname->ln_name, PFID(mdd_object_fid(tpobj)), tname->ln_name);
4003 rc = __mdd_index_delete(env, spobj, sname->ln_name,
4004 S_ISDIR(attr->la_mode), handle);
4008 rc = __mdd_index_insert(env, tpobj, mdd_object_fid(obj),
4009 attr->la_mode & S_IFMT,
4010 tname->ln_name, handle);
4014 rc = mdd_links_write(env, obj, ldata, handle);
4018 la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime;
4019 la->la_valid = LA_CTIME | LA_MTIME;
4020 mdd_write_lock(env, spobj, DT_SRC_PARENT);
4021 rc = mdd_update_time(env, spobj, spattr, la, handle);
4022 mdd_write_unlock(env, spobj);
4026 if (tpobj != spobj) {
4027 la->la_valid = LA_CTIME | LA_MTIME;
4028 mdd_write_lock(env, tpobj, DT_TGT_PARENT);
4029 rc = mdd_update_time(env, tpobj, tpattr, la, handle);
4030 mdd_write_unlock(env, tpobj);
4039 * Migrate file/dir to target MDT.
4041 * Create target according to \a spec, and then migrate xattrs, if it's
4042 * directory, migrate source stripes to target.
4044 * \param[in] env execution environment
4045 * \param[in] spobj source parent object
4046 * \param[in] tpobj target parent object
4047 * \param[in] sobj source object
4048 * \param[in] tobj target object
4049 * \param[in] lname file name
4050 * \param[in] spattr source parent attributes
4051 * \param[in] tpattr target parent attributes
4052 * \param[in] attr source attributes
4053 * \param[in] sbuf source LMV buf
4054 * \param[in] spec migrate create spec
4055 * \param[in] hint target creation hint
4056 * \param[in] handle tranasction handle
4058 * \retval 0 on success
4059 * \retval -errno on failure
4061 static int mdd_migrate_create(const struct lu_env *env,
4062 struct mdd_object *spobj,
4063 struct mdd_object *tpobj,
4064 struct mdd_object *sobj,
4065 struct mdd_object *tobj,
4066 const struct lu_name *sname,
4067 const struct lu_name *tname,
4068 struct lu_attr *spattr,
4069 struct lu_attr *tpattr,
4070 struct lu_attr *attr,
4071 const struct lu_buf *sbuf,
4072 struct linkea_data *ldata,
4073 struct mdd_xattrs *xattrs,
4075 struct md_op_spec *spec,
4076 struct dt_allocation_hint *hint,
4077 struct thandle *handle)
4084 * migrate sobj stripes to tobj if it's directory:
4085 * 1. detach stripes from sobj.
4086 * 2. attach stripes to tobj, see mdd_declare_migrate_mdt().
4087 * 3. create stripes for tobj, see lod_xattr_set_lmv().
4089 if (S_ISDIR(attr->la_mode)) {
4090 struct mdd_thread_info *info = mdd_env_info(env);
4091 struct md_layout_change *mlc = &info->mdi_mlc;
4093 mlc->mlc_opc = MD_LAYOUT_DETACH;
4095 mdd_write_lock(env, sobj, DT_SRC_PARENT);
4096 rc = mdo_layout_change(env, sobj, mlc, handle);
4097 mdd_write_unlock(env, sobj);
4102 /* don't set nlink from sobj */
4103 attr->la_valid &= ~LA_NLINK;
4105 rc = mdd_create_object(env, tpobj, tobj, attr, spec, NULL, NULL, NULL,
4106 hint, handle, false);
4110 mdd_write_lock(env, tobj, DT_TGT_CHILD);
4111 rc = mdd_foreach_xattr(env, tobj, xattrs, handle, mdo_xattr_set);
4112 mdd_write_unlock(env, tobj);
4116 /* for regular file, update OST objects XATTR_NAME_FID */
4117 if (S_ISREG(attr->la_mode)) {
4118 struct lu_buf fid_buf;
4120 /* target may be remote, update PFID via sobj. */
4121 fid_buf.lb_buf = (void *)mdd_object_fid(tobj);
4122 fid_buf.lb_len = sizeof(struct lu_fid);
4123 rc = mdo_xattr_set(env, sobj, &fid_buf, XATTR_NAME_FID, 0,
4128 /* delete LOV to avoid deleting OST objs when destroying sobj */
4129 mdd_write_lock(env, sobj, DT_SRC_CHILD);
4130 rc = mdo_xattr_del(env, sobj, XATTR_NAME_LOV, handle);
4131 mdd_write_unlock(env, sobj);
4132 /* O_DELAY_CREATE file may not have LOV, ignore -ENODATA */
4133 if (rc && rc != -ENODATA)
4138 /* update links FID */
4139 if (!S_ISDIR(attr->la_mode)) {
4140 rc = mdd_iterate_linkea(env, sobj, tobj, tname,
4141 mdd_object_fid(tpobj), ldata,
4142 NULL, handle, mdd_update_link);
4147 /* don't destroy sobj if it's plain directory */
4148 if (!S_ISDIR(attr->la_mode) || sbuf->lb_buf) {
4149 mdd_write_lock(env, sobj, DT_SRC_CHILD);
4150 rc = mdo_ref_del(env, sobj, handle);
4152 if (S_ISDIR(attr->la_mode))
4153 rc = mdo_ref_del(env, sobj, handle);
4155 rc = mdo_destroy(env, sobj, handle);
4157 mdd_write_unlock(env, sobj);
4162 rc = mdd_migrate_update(env, spobj, tpobj, tobj, sname, tname, attr,
4163 spattr, tpattr, ldata, ma, handle);
4168 /* NB: if user issued different migrate command, we can't adjust it silently
4169 * here, because this command will decide target MDT in subdir migration in
4172 static int mdd_migrate_cmd_check(struct mdd_device *mdd,
4173 const struct lmv_mds_md_v1 *lmv,
4174 const struct lmv_user_md_v1 *lum,
4175 const struct lu_name *lname)
4177 __u32 lum_stripe_count = lum->lum_stripe_count;
4178 __u32 lum_hash_type = lum->lum_hash_type &
4179 cpu_to_le32(LMV_HASH_TYPE_MASK);
4180 __u32 lmv_hash_type = lmv->lmv_hash_type &
4181 cpu_to_le32(LMV_HASH_TYPE_MASK);
4183 if (!lmv_is_sane(lmv))
4186 /* if stripe_count unspecified, set to 1 */
4187 if (!lum_stripe_count)
4188 lum_stripe_count = cpu_to_le32(1);
4190 /* TODO: check specific MDTs */
4191 if (lum_stripe_count != lmv->lmv_migrate_offset ||
4192 lum->lum_stripe_offset != lmv->lmv_master_mdt_index ||
4193 (lum_hash_type && lum_hash_type != lmv_hash_type)) {
4194 CERROR("%s: '"DNAME"' migration was interrupted, run 'lfs migrate -m %d -c %d -H %s "DNAME"' to finish migration.\n",
4195 mdd2obd_dev(mdd)->obd_name, PNAME(lname),
4196 le32_to_cpu(lmv->lmv_master_mdt_index),
4197 le32_to_cpu(lmv->lmv_migrate_offset),
4198 mdt_hash_name[le32_to_cpu(lmv_hash_type)],
4207 * Internal function to migrate directory or file between MDTs.
4209 * migrate source to target in following steps:
4210 * 1. create target, append source stripes after target's if it's directory,
4211 * migrate xattrs and update fid of source links.
4212 * 2. update namespace: migrate dirent from source parent to target parent,
4213 * update file linkea, and destroy source if it's not needed any more.
4215 * \param[in] env execution environment
4216 * \param[in] spobj source parent object
4217 * \param[in] tpobj target parent object
4218 * \param[in] sobj source object
4219 * \param[in] tobj target object
4220 * \param[in] sname source file name
4221 * \param[in] tname target file name
4222 * \param[in] spec target creation spec
4223 * \param[in] ma used to update \a pobj mtime and ctime
4225 * \retval 0 on success
4226 * \retval -errno on failure
4228 static int mdd_migrate_object(const struct lu_env *env,
4229 struct mdd_object *spobj,
4230 struct mdd_object *tpobj,
4231 struct mdd_object *sobj,
4232 struct mdd_object *tobj,
4233 const struct lu_name *sname,
4234 const struct lu_name *tname,
4235 struct md_op_spec *spec,
4238 struct mdd_thread_info *info = mdd_env_info(env);
4239 struct mdd_device *mdd = mdo2mdd(&spobj->mod_obj);
4240 struct lu_attr *spattr = &info->mdi_pattr;
4241 struct lu_attr *tpattr = &info->mdi_tpattr;
4242 struct lu_attr *attr = &info->mdi_cattr;
4243 struct linkea_data *ldata = &info->mdi_link_data;
4244 struct dt_allocation_hint *hint = &info->mdi_hint;
4245 struct lu_buf sbuf = { NULL };
4246 struct mdd_xattrs xattrs;
4247 struct lmv_mds_md_v1 *lmv;
4248 struct thandle *handle;
4253 rc = mdd_la_get(env, sobj, attr);
4257 rc = mdd_la_get(env, spobj, spattr);
4261 rc = mdd_la_get(env, tpobj, tpattr);
4265 rc = mdd_migrate_sanity_check(env, mdd, spobj, tpobj, sobj, tobj,
4266 spattr, tpattr, attr);
4270 mdd_xattrs_init(&xattrs);
4272 if (S_ISDIR(attr->la_mode) && !spec->sp_migrate_nsonly) {
4273 struct lmv_user_md_v1 *lum = spec->u.sp_ea.eadata;
4277 /* if user use default value '0' for stripe_count, we need to
4278 * adjust it to '1' to create a 1-stripe directory.
4280 if (lum->lum_stripe_count == 0)
4281 lum->lum_stripe_count = cpu_to_le32(1);
4283 rc = mdd_stripe_get(env, sobj, &sbuf, XATTR_NAME_LMV);
4284 if (rc && rc != -ENODATA)
4289 if (!lmv_is_sane(lmv))
4290 GOTO(out, rc = -EBADF);
4291 if (lmv_is_migrating(lmv)) {
4292 rc = mdd_migrate_cmd_check(mdd, lmv, lum,
4297 } else if (!S_ISDIR(attr->la_mode)) {
4299 GOTO(out, rc = -EALREADY);
4301 /* update namespace only if @sobj is on MDT where @tpobj is. */
4302 if (!mdd_object_remote(tpobj) && !mdd_object_remote(sobj))
4303 spec->sp_migrate_nsonly = true;
4305 if (S_ISLNK(attr->la_mode)) {
4306 lu_buf_check_and_alloc(&sbuf, attr->la_size + 1);
4308 GOTO(out, rc = -ENOMEM);
4310 rc = mdd_readlink(env, &sobj->mod_obj, &sbuf);
4313 CERROR("%s: "DFID" readlink failed: rc = %d\n",
4314 mdd2obd_dev(mdd)->obd_name,
4315 PFID(mdd_object_fid(sobj)), rc);
4321 /* linkea needs update upon FID or parent stripe change */
4322 rc = mdd_migrate_linkea_prepare(env, mdd, spobj, tpobj, sobj, sname,
4323 tname, attr, ldata);
4325 /* update namespace only if @sobj has link on its MDT. */
4326 spec->sp_migrate_nsonly = true;
4330 /* migrate inode will migrate xattrs, prepare xattrs early to avoid
4331 * RPCs inside transaction.
4333 if (!spec->sp_migrate_nsonly) {
4334 rc = mdd_xattrs_migrate_prep(env, &xattrs, sobj, true, true);
4339 handle = mdd_trans_create(env, mdd);
4341 GOTO(out, rc = PTR_ERR(handle));
4343 if (spec->sp_migrate_nsonly)
4344 rc = mdd_declare_migrate_update(env, spobj, tpobj, sobj, sname,
4345 tname, attr, spattr, tpattr,
4348 rc = mdd_declare_migrate_create(env, spobj, tpobj, sobj, tobj,
4349 sname, tname, spattr, tpattr,
4350 attr, &sbuf, ldata, &xattrs, ma,
4351 spec, hint, handle);
4355 rc = mdd_declare_changelog_store(env, mdd, CL_MIGRATE, tname, sname,
4360 rc = mdd_trans_start(env, mdd, handle);
4364 if (spec->sp_migrate_nsonly)
4365 rc = mdd_migrate_update(env, spobj, tpobj, sobj, sname, tname,
4366 attr, spattr, tpattr, ldata, ma,
4369 rc = mdd_migrate_create(env, spobj, tpobj, sobj, tobj, sname,
4370 tname, spattr, tpattr, attr, &sbuf,
4371 ldata, &xattrs, ma, spec, hint, handle);
4375 rc = mdd_changelog_ns_store(env, mdd, CL_MIGRATE, 0,
4376 spec->sp_migrate_nsonly ? sobj : tobj,
4377 mdd_object_fid(spobj), mdd_object_fid(sobj),
4378 mdd_object_fid(tpobj), tname, sname,
4385 rc = mdd_trans_stop(env, mdd, rc, handle);
4387 mdd_xattrs_fini(&xattrs);
4394 * Migrate directory or file between MDTs.
4396 * \param[in] env execution environment
4397 * \param[in] md_pobj parent master object
4398 * \param[in] md_sobj source object
4399 * \param[in] lname file name
4400 * \param[in] md_tobj target object
4401 * \param[in] spec target creation spec
4402 * \param[in] ma used to update \a pobj mtime and ctime
4404 * \retval 0 on success
4405 * \retval -errno on failure
4407 static int mdd_migrate(const struct lu_env *env, struct md_object *md_pobj,
4408 struct md_object *md_sobj, const struct lu_name *lname,
4409 struct md_object *md_tobj, struct md_op_spec *spec,
4412 struct mdd_thread_info *info = mdd_env_info(env);
4413 struct mdd_device *mdd = mdo2mdd(md_pobj);
4414 struct mdd_object *pobj = md2mdd_obj(md_pobj);
4415 struct mdd_object *sobj = md2mdd_obj(md_sobj);
4416 struct mdd_object *tobj = md2mdd_obj(md_tobj);
4417 struct mdd_object *spobj = NULL;
4418 struct mdd_object *tpobj = NULL;
4419 struct lu_buf pbuf = { NULL };
4420 struct lu_fid *fid = &info->mdi_fid2;
4421 struct lmv_mds_md_v1 *lmv;
4426 /* locate source and target stripe on pobj, which are the real parent */
4427 rc = mdd_stripe_get(env, pobj, &pbuf, XATTR_NAME_LMV);
4428 if (rc < 0 && rc != -ENODATA)
4435 if (!lmv_is_sane(lmv))
4436 GOTO(out, rc = -EBADF);
4438 /* locate target parent stripe */
4439 /* fail check here to make sure top dir migration succeed. */
4440 if (lmv_is_migrating(lmv) &&
4441 OBD_FAIL_CHECK_RESET(OBD_FAIL_MIGRATE_ENTRIES, 0))
4442 GOTO(out, rc = -EIO);
4444 index = lmv_name_to_stripe_index(lmv, lname->ln_name,
4447 GOTO(out, rc = index);
4449 fid_le_to_cpu(fid, &lmv->lmv_stripe_fids[index]);
4450 tpobj = mdd_object_find(env, mdd, fid);
4452 GOTO(out, rc = PTR_ERR(tpobj));
4454 /* locate source parent stripe */
4455 if (lmv_is_layout_changing(lmv)) {
4456 index = lmv_name_to_stripe_index_old(lmv,
4460 GOTO(out, rc = index);
4462 fid_le_to_cpu(fid, &lmv->lmv_stripe_fids[index]);
4463 spobj = mdd_object_find(env, mdd, fid);
4465 GOTO(out, rc = PTR_ERR(spobj));
4467 /* parent stripe unchanged */
4468 if (spobj == tpobj) {
4469 if (!lmv_is_restriping(lmv))
4470 GOTO(out, rc = -EINVAL);
4471 GOTO(out, rc = -EALREADY);
4475 mdd_object_get(spobj);
4480 mdd_object_get(tpobj);
4481 mdd_object_get(spobj);
4484 rc = mdd_migrate_object(env, spobj, tpobj, sobj, tobj, lname, lname,
4489 if (!IS_ERR_OR_NULL(spobj))
4490 mdd_object_put(env, spobj);
4491 if (!IS_ERR_OR_NULL(tpobj))
4492 mdd_object_put(env, tpobj);
4498 static int mdd_declare_1sd_collapse(const struct lu_env *env,
4499 struct mdd_object *pobj,
4500 struct mdd_object *obj,
4501 struct mdd_object *stripe,
4502 struct lu_attr *attr,
4503 struct mdd_xattrs *xattrs,
4504 struct md_layout_change *mlc,
4505 struct lu_name *lname,
4506 struct thandle *handle)
4510 mlc->mlc_opc = MD_LAYOUT_DETACH;
4511 rc = mdo_declare_layout_change(env, obj, mlc, handle);
4515 rc = mdo_declare_index_insert(env, stripe, mdd_object_fid(pobj),
4516 S_IFDIR, dotdot, handle);
4520 rc = mdd_foreach_xattr(env, stripe, xattrs, handle,
4521 mdo_declare_xattr_set);
4525 rc = mdo_declare_xattr_del(env, stripe, XATTR_NAME_LMV, handle);
4529 rc = mdo_declare_attr_set(env, stripe, attr, handle);
4533 rc = mdo_declare_index_delete(env, pobj, lname->ln_name, handle);
4537 rc = mdo_declare_index_insert(env, pobj, mdd_object_fid(stripe),
4538 attr->la_mode, lname->ln_name, handle);
4542 rc = mdo_declare_ref_del(env, obj, handle);
4546 rc = mdo_declare_ref_del(env, obj, handle);
4550 rc = mdo_declare_destroy(env, obj, handle);
4557 /* transform one-stripe directory to a plain directory */
4558 static int mdd_1sd_collapse(const struct lu_env *env,
4559 struct mdd_object *pobj,
4560 struct mdd_object *obj,
4561 struct mdd_object *stripe,
4562 struct lu_attr *attr,
4563 struct mdd_xattrs *xattrs,
4564 struct md_layout_change *mlc,
4565 struct lu_name *lname,
4566 struct thandle *handle)
4572 /* replace 1-stripe directory with its stripe */
4573 mlc->mlc_opc = MD_LAYOUT_DETACH;
4575 mdd_write_lock(env, obj, DT_SRC_PARENT);
4576 rc = mdo_layout_change(env, obj, mlc, handle);
4577 mdd_write_unlock(env, obj);
4581 mdd_write_lock(env, pobj, DT_SRC_PARENT);
4582 mdd_write_lock(env, obj, DT_SRC_CHILD);
4584 /* insert dotdot to stripe which points to parent */
4585 rc = __mdd_index_insert_only(env, stripe, mdd_object_fid(pobj),
4586 S_IFDIR, dotdot, handle);
4590 rc = mdd_foreach_xattr(env, stripe, xattrs, handle, mdo_xattr_set);
4595 rc = mdo_xattr_del(env, stripe, XATTR_NAME_LMV, handle);
4599 /* don't set nlink from parent */
4600 attr->la_valid &= ~LA_NLINK;
4602 rc = mdo_attr_set(env, stripe, attr, handle);
4606 /* delete dir name from parent */
4607 rc = __mdd_index_delete_only(env, pobj, lname->ln_name, handle);
4611 /* insert stripe to parent with dir name */
4612 rc = __mdd_index_insert_only(env, pobj, mdd_object_fid(stripe),
4613 attr->la_mode, lname->ln_name, handle);
4617 /* destroy dir obj */
4618 rc = mdo_ref_del(env, obj, handle);
4622 rc = mdo_ref_del(env, obj, handle);
4626 rc = mdo_destroy(env, obj, handle);
4632 mdd_write_unlock(env, obj);
4633 mdd_write_unlock(env, pobj);
4639 * shrink directory stripes after migration/merge
4641 int mdd_dir_layout_shrink(const struct lu_env *env,
4642 struct md_object *md_obj,
4643 struct md_layout_change *mlc)
4645 struct mdd_device *mdd = mdo2mdd(md_obj);
4646 struct mdd_thread_info *info = mdd_env_info(env);
4647 struct mdd_object *obj = md2mdd_obj(md_obj);
4648 struct mdd_object *pobj = NULL;
4649 struct mdd_object *stripe = NULL;
4650 struct lu_attr *attr = &info->mdi_pattr;
4651 struct lu_fid *fid = &info->mdi_fid2;
4652 struct lu_name lname = { NULL };
4653 struct lu_buf lmv_buf = { NULL };
4654 struct mdd_xattrs xattrs;
4655 struct lmv_mds_md_v1 *lmv;
4656 struct lmv_user_md *lmu;
4657 struct thandle *handle;
4662 rc = mdd_la_get(env, obj, attr);
4666 if (!S_ISDIR(attr->la_mode))
4669 rc = mdd_stripe_get(env, obj, &lmv_buf, XATTR_NAME_LMV);
4673 lmv = lmv_buf.lb_buf;
4674 if (!lmv_is_sane(lmv))
4677 lmu = mlc->mlc_buf.lb_buf;
4679 /* adjust the default value '0' to '1' */
4680 if (lmu->lum_stripe_count == 0)
4681 lmu->lum_stripe_count = cpu_to_le32(1);
4683 /* these were checked in MDT */
4684 LASSERT(le32_to_cpu(lmu->lum_stripe_count) <
4685 le32_to_cpu(lmv->lmv_stripe_count));
4686 LASSERT(!lmv_is_splitting(lmv));
4687 LASSERT(lmv_is_migrating(lmv) || lmv_is_merging(lmv));
4689 mdd_xattrs_init(&xattrs);
4691 /* if dir stripe count will be shrunk to 1, it needs to be transformed
4692 * to a plain dir, which will cause FID change and namespace update.
4694 if (le32_to_cpu(lmu->lum_stripe_count) == 1) {
4695 struct linkea_data *ldata = &info->mdi_link_data;
4696 char *filename = info->mdi_name;
4698 rc = mdd_links_read(env, obj, ldata);
4702 if (ldata->ld_leh->leh_reccount > 1)
4703 GOTO(out, rc = -EINVAL);
4705 linkea_first_entry(ldata);
4707 GOTO(out, rc = -ENODATA);
4709 linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, &lname,
4712 /* Note: lname might miss \0 at the end */
4713 snprintf(filename, sizeof(info->mdi_name), "%.*s",
4714 lname.ln_namelen, lname.ln_name);
4715 lname.ln_name = filename;
4717 pobj = mdd_object_find(env, mdd, fid);
4724 fid_le_to_cpu(fid, &lmv->lmv_stripe_fids[0]);
4726 stripe = mdd_object_find(env, mdd, fid);
4727 if (IS_ERR(stripe)) {
4728 mdd_object_put(env, pobj);
4730 GOTO(out, rc = PTR_ERR(stripe));
4733 if (!lmv_is_fixed(lmv))
4734 rc = mdd_xattrs_migrate_prep(env, &xattrs, obj, false,
4738 handle = mdd_trans_create(env, mdd);
4740 GOTO(out, rc = PTR_ERR(handle));
4742 mlc->mlc_opc = MD_LAYOUT_SHRINK;
4743 rc = mdo_declare_layout_change(env, obj, mlc, handle);
4745 GOTO(stop_trans, rc);
4747 if (le32_to_cpu(lmu->lum_stripe_count) == 1 && !lmv_is_fixed(lmv)) {
4748 rc = mdd_declare_1sd_collapse(env, pobj, obj, stripe, attr,
4749 &xattrs, mlc, &lname, handle);
4751 GOTO(stop_trans, rc);
4754 rc = mdd_declare_changelog_store(env, mdd, CL_LAYOUT, NULL, NULL,
4757 GOTO(stop_trans, rc);
4759 rc = mdd_trans_start(env, mdd, handle);
4761 GOTO(stop_trans, rc);
4763 mdd_write_lock(env, obj, DT_SRC_PARENT);
4764 mlc->mlc_opc = MD_LAYOUT_SHRINK;
4765 rc = mdo_layout_change(env, obj, mlc, handle);
4766 mdd_write_unlock(env, obj);
4768 GOTO(stop_trans, rc);
4770 if (le32_to_cpu(lmu->lum_stripe_count) == 1 && !lmv_is_fixed(lmv)) {
4771 rc = mdd_1sd_collapse(env, pobj, obj, stripe, attr, &xattrs,
4772 mlc, &lname, handle);
4774 GOTO(stop_trans, rc);
4777 rc = mdd_changelog_data_store_xattr(env, mdd, CL_LAYOUT, 0, obj,
4778 XATTR_NAME_LMV, handle);
4779 GOTO(stop_trans, rc);
4782 rc = mdd_trans_stop(env, mdd, rc, handle);
4784 mdd_xattrs_fini(&xattrs);
4786 mdd_object_put(env, stripe);
4787 mdd_object_put(env, pobj);
4789 lu_buf_free(&lmv_buf);
4793 static int mdd_dir_declare_split_plain(const struct lu_env *env,
4794 struct mdd_device *mdd,
4795 struct mdd_object *pobj,
4796 struct mdd_object *obj,
4797 struct mdd_object *tobj,
4798 struct mdd_xattrs *xattrs,
4799 struct md_layout_change *mlc,
4800 struct dt_allocation_hint *hint,
4801 struct thandle *handle)
4803 struct mdd_thread_info *info = mdd_env_info(env);
4804 const struct lu_name *lname = mlc->mlc_name;
4805 struct lu_attr *la = &info->mdi_la_for_fix;
4806 struct lmv_user_md_v1 *lum = mlc->mlc_spec->u.sp_ea.eadata;
4807 struct linkea_data *ldata = &info->mdi_link_data;
4808 struct lmv_mds_md_v1 *lmv;
4812 mlc->mlc_opc = MD_LAYOUT_DETACH;
4813 rc = mdo_declare_layout_change(env, obj, mlc, handle);
4817 memset(ldata, 0, sizeof(*ldata));
4818 rc = mdd_linkea_prepare(env, obj, NULL, NULL, mdd_object_fid(pobj),
4819 lname, 1, 0, ldata);
4823 count = lum->lum_stripe_count;
4824 lum->lum_stripe_count = 0;
4825 /* don't set default LMV since it will become a striped dir */
4826 lum->lum_max_inherit = LMV_INHERIT_NONE;
4827 mdd_object_make_hint(env, pobj, tobj, mlc->mlc_attr, mlc->mlc_spec,
4829 rc = mdd_declare_create(env, mdo2mdd(&pobj->mod_obj), pobj, tobj,
4830 lname, mlc->mlc_attr, handle, mlc->mlc_spec,
4831 ldata, NULL, NULL, NULL, hint);
4835 /* tobj mode will be used in lod_declare_xattr_set(), but it's not
4838 tobj->mod_obj.mo_lu.lo_header->loh_attr |= S_IFDIR;
4840 lmv = (typeof(lmv))info->mdi_key;
4841 memset(lmv, 0, sizeof(*lmv));
4842 lmv->lmv_magic = cpu_to_le32(LMV_MAGIC_V1);
4843 lmv->lmv_stripe_count = cpu_to_le32(1);
4844 lmv->lmv_hash_type = cpu_to_le32(LMV_HASH_TYPE_DEFAULT);
4845 fid_le_to_cpu(&lmv->lmv_stripe_fids[0], mdd_object_fid(obj));
4847 mlc->mlc_opc = MD_LAYOUT_ATTACH;
4848 mlc->mlc_buf.lb_buf = lmv;
4849 mlc->mlc_buf.lb_len = lmv_mds_md_size(1, LMV_MAGIC_V1);
4850 rc = mdo_declare_layout_change(env, tobj, mlc, handle);
4854 rc = mdd_foreach_xattr(env, tobj, xattrs, handle,
4855 mdo_declare_xattr_set);
4859 lum->lum_stripe_count = count;
4860 mlc->mlc_opc = MD_LAYOUT_SPLIT;
4861 rc = mdo_declare_layout_change(env, tobj, mlc, handle);
4865 rc = mdo_declare_index_delete(env, pobj, lname->ln_name, handle);
4869 rc = mdo_declare_index_insert(env, pobj, mdd_object_fid(tobj),
4870 S_IFDIR, lname->ln_name, handle);
4874 la->la_valid = LA_CTIME | LA_MTIME;
4875 rc = mdo_declare_attr_set(env, obj, la, handle);
4879 rc = mdo_declare_attr_set(env, pobj, la, handle);
4883 rc = mdd_declare_changelog_store(env, mdd, CL_MIGRATE, lname, NULL,
4889 * plain directory split:
4890 * 1. create \a tobj as plain directory.
4891 * 2. append \a obj as first stripe of \a tobj.
4892 * 3. migrate xattrs from \a obj to \a tobj.
4893 * 4. split \a tobj to specific stripe count.
4895 static int mdd_dir_split_plain(const struct lu_env *env,
4896 struct mdd_device *mdd,
4897 struct mdd_object *pobj,
4898 struct mdd_object *obj,
4899 struct mdd_object *tobj,
4900 struct mdd_xattrs *xattrs,
4901 struct md_layout_change *mlc,
4902 struct dt_allocation_hint *hint,
4903 struct thandle *handle)
4905 struct mdd_thread_info *info = mdd_env_info(env);
4906 struct lu_attr *pattr = &info->mdi_pattr;
4907 struct lu_attr *la = &info->mdi_la_for_fix;
4908 const struct lu_name *lname = mlc->mlc_name;
4909 struct linkea_data *ldata = &info->mdi_link_data;
4914 /* copy linkea out and set on target later */
4915 rc = mdd_links_read(env, obj, ldata);
4919 mlc->mlc_opc = MD_LAYOUT_DETACH;
4920 rc = mdo_layout_change(env, obj, mlc, handle);
4924 /* don't set nlink from obj */
4925 mlc->mlc_attr->la_valid &= ~LA_NLINK;
4927 rc = mdd_create_object(env, pobj, tobj, mlc->mlc_attr, mlc->mlc_spec,
4928 NULL, NULL, NULL, hint, handle, false);
4932 rc = mdd_foreach_xattr(env, tobj, xattrs, handle, mdo_xattr_set);
4936 rc = mdd_links_write(env, tobj, ldata, handle);
4940 rc = __mdd_index_delete(env, pobj, lname->ln_name, true, handle);
4944 rc = __mdd_index_insert(env, pobj, mdd_object_fid(tobj), S_IFDIR,
4945 lname->ln_name, handle);
4949 la->la_ctime = la->la_mtime = mlc->mlc_attr->la_mtime;
4950 la->la_valid = LA_CTIME | LA_MTIME;
4952 mdd_write_lock(env, obj, DT_SRC_CHILD);
4953 rc = mdd_update_time(env, tobj, mlc->mlc_attr, la, handle);
4954 mdd_write_unlock(env, obj);
4958 rc = mdd_la_get(env, pobj, pattr);
4962 la->la_valid = LA_CTIME | LA_MTIME;
4964 mdd_write_lock(env, pobj, DT_SRC_PARENT);
4965 rc = mdd_update_time(env, pobj, pattr, la, handle);
4966 mdd_write_unlock(env, pobj);
4970 /* FID changes, record it as CL_MIGRATE */
4971 rc = mdd_changelog_ns_store(env, mdd, CL_MIGRATE, 0, tobj,
4972 mdd_object_fid(pobj), mdd_object_fid(obj),
4973 mdd_object_fid(pobj), lname, lname, handle);
4977 int mdd_dir_layout_split(const struct lu_env *env, struct md_object *o,
4978 struct md_layout_change *mlc)
4980 struct mdd_thread_info *info = mdd_env_info(env);
4981 struct mdd_device *mdd = mdo2mdd(o);
4982 struct mdd_object *obj = md2mdd_obj(o);
4983 struct mdd_object *pobj = md2mdd_obj(mlc->mlc_parent);
4984 struct mdd_object *tobj = md2mdd_obj(mlc->mlc_target);
4985 struct dt_allocation_hint *hint = &info->mdi_hint;
4986 bool is_plain = false;
4987 struct mdd_xattrs xattrs;
4988 struct thandle *handle;
4993 LASSERT(S_ISDIR(mdd_object_type(obj)));
4995 rc = mdo_xattr_get(env, obj, &LU_BUF_NULL, XATTR_NAME_LMV);
5001 mdd_xattrs_init(&xattrs);
5003 rc = mdd_xattrs_migrate_prep(env, &xattrs, obj, true, true);
5005 handle = mdd_trans_create(env, mdd);
5007 GOTO(out, rc = PTR_ERR(handle));
5010 rc = mdd_dir_declare_split_plain(env, mdd, pobj, obj, tobj,
5011 &xattrs, mlc, hint, handle);
5013 mlc->mlc_opc = MD_LAYOUT_SPLIT;
5014 rc = mdo_declare_layout_change(env, obj, mlc, handle);
5016 GOTO(stop_trans, rc);
5018 rc = mdd_declare_changelog_store(env, mdd, CL_LAYOUT, NULL,
5022 GOTO(stop_trans, rc);
5024 rc = mdd_trans_start(env, mdd, handle);
5026 GOTO(stop_trans, rc);
5029 rc = mdd_dir_split_plain(env, mdd, pobj, obj, tobj, &xattrs,
5032 mdd_write_lock(env, obj, DT_TGT_CHILD);
5033 rc = mdo_xattr_set(env, obj, NULL, XATTR_NAME_LMV,
5034 LU_XATTR_CREATE, handle);
5035 mdd_write_unlock(env, obj);
5037 GOTO(stop_trans, rc);
5039 rc = mdd_changelog_data_store_xattr(env, mdd, CL_LAYOUT, 0, obj,
5040 XATTR_NAME_LMV, handle);
5043 GOTO(stop_trans, rc);
5048 rc = mdd_trans_stop(env, mdd, rc, handle);
5050 mdd_xattrs_fini(&xattrs);
5055 const struct md_dir_operations mdd_dir_ops = {
5056 .mdo_is_subdir = mdd_is_subdir,
5057 .mdo_lookup = mdd_lookup,
5058 .mdo_create = mdd_create,
5059 .mdo_rename = mdd_rename,
5060 .mdo_link = mdd_link,
5061 .mdo_unlink = mdd_unlink,
5062 .mdo_create_data = mdd_create_data,
5063 .mdo_migrate = mdd_migrate,