X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fmdd%2Fmdd_dir.c;h=17613d67962f949c4eed2d394fca441d14c6fbc2;hp=bccc16d472130441b4e94510328f874a73ecb2ec;hb=3cce65712d94cffe8f1626545845b95b88aef672;hpb=0f22e4c098b1f7885ef509bbfc346b3e8905b28d diff --git a/lustre/mdd/mdd_dir.c b/lustre/mdd/mdd_dir.c index bccc16d..17613d6 100644 --- a/lustre/mdd/mdd_dir.c +++ b/lustre/mdd/mdd_dir.c @@ -15,11 +15,7 @@ * * You should have received a copy of the GNU General Public License * version 2 along with this program; If not, see - * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf - * - * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, - * CA 95054 USA or visit www.sun.com if you need additional information or - * have any questions. + * http://www.gnu.org/licenses/gpl-2.0.html * * GPL HEADER END */ @@ -27,7 +23,7 @@ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. * - * Copyright (c) 2011, 2013, Intel Corporation. + * Copyright (c) 2011, 2017, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -46,6 +42,8 @@ #include #include #include +#include +#include #include "mdd_internal.h" @@ -53,8 +51,8 @@ static const char dot[] = "."; static const char dotdot[] = ".."; static struct lu_name lname_dotdot = { - (char *) dotdot, - sizeof(dotdot) - 1 + .ln_name = (char *) dotdot, + .ln_namelen = sizeof(dotdot) - 1, }; static inline int @@ -85,22 +83,22 @@ __mdd_lookup(const struct lu_env *env, struct md_object *pobj, if (unlikely(mdd_is_dead_obj(mdd_obj))) RETURN(-ESTALE); + if (!mdd_object_exists(mdd_obj)) + RETURN(-ESTALE); + if (mdd_object_remote(mdd_obj)) { CDEBUG(D_INFO, "%s: Object "DFID" locates on remote server\n", mdd2obd_dev(m)->obd_name, PFID(mdo2fid(mdd_obj))); - } else if (!mdd_object_exists(mdd_obj)) { - RETURN(-ESTALE); } rc = mdd_permission_internal_locked(env, mdd_obj, pattr, mask, - MOR_TGT_PARENT); + DT_TGT_PARENT); if (rc) RETURN(rc); if (likely(S_ISDIR(mdd_object_type(mdd_obj)) && dt_try_as_dir(env, dir))) - rc = dt_lookup(env, dir, (struct dt_rec *)fid, key, - mdd_object_capa(env, mdd_obj)); + rc = dt_lookup(env, dir, (struct dt_rec *)fid, key); else rc = -ENOTDIR; @@ -115,20 +113,140 @@ int mdd_lookup(const struct lu_env *env, int rc; ENTRY; - rc = mdd_la_get(env, md2mdd_obj(pobj), pattr, BYPASS_CAPA); + rc = mdd_la_get(env, md2mdd_obj(pobj), pattr); if (rc != 0) RETURN(rc); - rc = __mdd_lookup(env, pobj, pattr, lname, fid, MAY_EXEC); + rc = __mdd_lookup(env, pobj, pattr, lname, fid, + (spec != NULL && spec->sp_permitted) ? 0 : MAY_EXEC); RETURN(rc); } +/** Read the link EA into a temp buffer. + * Uses the mdd_thread_info::mti_big_buf since it is generally large. + * A pointer to the buffer is stored in \a ldata::ld_buf. + * + * \retval 0 or error + */ +static int __mdd_links_read(const struct lu_env *env, + struct mdd_object *mdd_obj, + struct linkea_data *ldata) +{ + int rc; + + if (!mdd_object_exists(mdd_obj)) + return -ENODATA; + + /* First try a small buf */ + LASSERT(env != NULL); + ldata->ld_buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_link_buf, + PAGE_SIZE); + if (ldata->ld_buf->lb_buf == NULL) + return -ENOMEM; + + rc = mdo_xattr_get(env, mdd_obj, ldata->ld_buf, XATTR_NAME_LINK); + if (rc == -ERANGE) { + /* Buf was too small, figure out what we need. */ + lu_buf_free(ldata->ld_buf); + rc = mdo_xattr_get(env, mdd_obj, ldata->ld_buf, + XATTR_NAME_LINK); + if (rc < 0) + return rc; + ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc); + if (ldata->ld_buf->lb_buf == NULL) + return -ENOMEM; + rc = mdo_xattr_get(env, mdd_obj, ldata->ld_buf, + XATTR_NAME_LINK); + } + if (rc < 0) { + lu_buf_free(ldata->ld_buf); + ldata->ld_buf = NULL; + return rc; + } + + return linkea_init(ldata); +} + +static int mdd_links_read(const struct lu_env *env, + struct mdd_object *mdd_obj, + struct linkea_data *ldata) +{ + int rc; + + rc = __mdd_links_read(env, mdd_obj, ldata); + if (!rc) + rc = linkea_init(ldata); + + return rc; +} + +static int mdd_links_read_with_rec(const struct lu_env *env, + struct mdd_object *mdd_obj, + struct linkea_data *ldata) +{ + int rc; + + rc = __mdd_links_read(env, mdd_obj, ldata); + if (!rc) + rc = linkea_init_with_rec(ldata); + + return rc; +} + +/** + * Get parent FID of the directory + * + * Read parent FID from linkEA, if that fails, then do lookup + * dotdot to get the parent FID. + * + * \param[in] env execution environment + * \param[in] obj object from which to find the parent FID + * \param[in] attr attribute of the object + * \param[out] fid fid to get the parent FID + * + * \retval 0 if getting the parent FID succeeds. + * \retval negative errno if getting the parent FID fails. + **/ static inline int mdd_parent_fid(const struct lu_env *env, struct mdd_object *obj, const struct lu_attr *attr, struct lu_fid *fid) { - return __mdd_lookup(env, &obj->mod_obj, attr, &lname_dotdot, fid, 0); + struct mdd_thread_info *info = mdd_env_info(env); + struct linkea_data ldata = { NULL }; + struct lu_buf *buf = &info->mti_link_buf; + struct lu_name lname; + int rc = 0; + + ENTRY; + + LASSERTF(S_ISDIR(mdd_object_type(obj)), + "%s: FID "DFID" is not a directory type = %o\n", + mdd_obj_dev_name(obj), PFID(mdd_object_fid(obj)), + mdd_object_type(obj)); + + buf = lu_buf_check_and_alloc(buf, PATH_MAX); + if (buf->lb_buf == NULL) + GOTO(lookup, rc = 0); + + ldata.ld_buf = buf; + rc = mdd_links_read_with_rec(env, obj, &ldata); + if (rc != 0) + GOTO(lookup, rc); + + LASSERT(ldata.ld_leh != NULL); + /* Directory should only have 1 parent */ + if (ldata.ld_leh->leh_reccount > 1) + GOTO(lookup, rc); + + ldata.ld_lee = (struct link_ea_entry *)(ldata.ld_leh + 1); + + linkea_entry_unpack(ldata.ld_lee, &ldata.ld_reclen, &lname, fid); + if (likely(fid_is_sane(fid))) + RETURN(0); +lookup: + rc = __mdd_lookup(env, &obj->mod_obj, attr, &lname_dotdot, fid, 0); + RETURN(rc); } /* @@ -142,101 +260,84 @@ int mdd_is_root(struct mdd_device *mdd, const struct lu_fid *fid) } /* - * return 1: if lf is the fid of the ancestor of p1; + * return 1: if \a tfid is the fid of the ancestor of \a mo; * return 0: if not; - * - * return -EREMOTE: if remote object is found, in this - * case fid of remote object is saved to @pf; - * * otherwise: values < 0, errors. */ static int mdd_is_parent(const struct lu_env *env, struct mdd_device *mdd, - struct mdd_object *p1, + struct mdd_object *mo, const struct lu_attr *attr, - const struct lu_fid *lf, - struct lu_fid *pf) + const struct lu_fid *tfid) { - struct mdd_object *parent = NULL; - struct lu_fid *pfid; - int rc; - ENTRY; + struct mdd_object *mp; + struct lu_fid *pfid; + int rc; + + LASSERT(!lu_fid_eq(mdo2fid(mo), tfid)); + pfid = &mdd_env_info(env)->mti_fid; - LASSERT(!lu_fid_eq(mdo2fid(p1), lf)); - pfid = &mdd_env_info(env)->mti_fid; + if (mdd_is_root(mdd, mdo2fid(mo))) + return 0; - /* Check for root first. */ - if (mdd_is_root(mdd, mdo2fid(p1))) - RETURN(0); + if (mdd_is_root(mdd, tfid)) + return 1; - for(;;) { - /* this is done recursively, bypass capa for each obj */ - mdd_set_capainfo(env, 4, p1, BYPASS_CAPA); - rc = mdd_parent_fid(env, p1, attr, pfid); - if (rc) - GOTO(out, rc); - if (mdd_is_root(mdd, pfid)) - GOTO(out, rc = 0); - if (lu_fid_eq(pfid, &mdd->mdd_local_root_fid)) - GOTO(out, rc = 0); - if (lu_fid_eq(pfid, lf)) - GOTO(out, rc = 1); - if (parent) - mdd_object_put(env, parent); - - parent = mdd_object_find(env, mdd, pfid); - if (IS_ERR(parent)) { - GOTO(out, rc = PTR_ERR(parent)); - } else if (mdd_object_remote(parent)) { - /*FIXME: Because of the restriction of rename in Phase I. - * If the parent is remote, we just assumed lf is not the - * parent of P1 for now */ - GOTO(out, rc = 0); + rc = mdd_parent_fid(env, mo, attr, pfid); + if (rc) + return rc; + + while (1) { + if (lu_fid_eq(pfid, tfid)) + return 1; + + if (mdd_is_root(mdd, pfid)) + return 0; + + mp = mdd_object_find(env, mdd, pfid); + if (IS_ERR(mp)) + return PTR_ERR(mp); + + if (!mdd_object_exists(mp)) { + mdd_object_put(env, mp); + return -ENOENT; } - p1 = parent; - } - EXIT; -out: - if (parent && !IS_ERR(parent)) - mdd_object_put(env, parent); - return rc; + + rc = mdd_parent_fid(env, mp, attr, pfid); + mdd_object_put(env, mp); + if (rc) + return rc; + } + + return 0; } /* * No permission check is needed. * * returns 1: if fid is ancestor of @mo; - * returns 0: if fid is not a ancestor of @mo; - * - * returns EREMOTE if remote object is found, fid of remote object is saved to - * @fid; - * + * returns 0: if fid is not an ancestor of @mo; * returns < 0: if error */ int mdd_is_subdir(const struct lu_env *env, struct md_object *mo, - const struct lu_fid *fid, struct lu_fid *sfid) + const struct lu_fid *fid) { struct mdd_device *mdd = mdo2mdd(mo); struct lu_attr *attr = MDD_ENV_VAR(env, cattr); int rc; ENTRY; + if (!mdd_object_exists(md2mdd_obj(mo))) + RETURN(-ENOENT); + if (!S_ISDIR(mdd_object_type(md2mdd_obj(mo)))) - RETURN(0); + RETURN(-ENOTDIR); - rc = mdd_la_get(env, md2mdd_obj(mo), attr, BYPASS_CAPA); + rc = mdd_la_get(env, md2mdd_obj(mo), attr); if (rc != 0) RETURN(rc); - rc = mdd_is_parent(env, mdd, md2mdd_obj(mo), attr, fid, sfid); - if (rc == 0) { - /* found root */ - fid_zero(sfid); - } else if (rc == 1) { - /* found @fid is parent */ - *sfid = *fid; - rc = 0; - } + rc = mdd_is_parent(env, mdd, md2mdd_obj(mo), attr, fid); RETURN(rc); } @@ -265,7 +366,7 @@ static int mdd_dir_is_empty(const struct lu_env *env, RETURN(-ENOTDIR); iops = &obj->do_index_ops->dio_it; - it = iops->init(env, obj, LUDA_64BITHASH, BYPASS_CAPA); + it = iops->init(env, obj, LUDA_64BITHASH); if (!IS_ERR(it)) { result = iops->get(env, it, (const struct dt_key *)""); if (result > 0) { @@ -284,8 +385,12 @@ static int mdd_dir_is_empty(const struct lu_env *env, iops->put(env, it); iops->fini(env, it); - } else + } else { result = PTR_ERR(it); + /* -ENODEV means no valid stripe */ + if (result == -ENODEV) + RETURN(0); + } RETURN(result); } @@ -337,8 +442,6 @@ int mdd_may_create(const struct lu_env *env, struct mdd_object *pobj, const struct lu_attr *pattr, struct mdd_object *cobj, bool check_perm) { - struct mdd_thread_info *info = mdd_env_info(env); - struct lu_buf *xbuf; int rc = 0; ENTRY; @@ -348,23 +451,10 @@ int mdd_may_create(const struct lu_env *env, struct mdd_object *pobj, if (mdd_is_dead_obj(pobj)) RETURN(-ENOENT); - /* If the parent is a sub-stripe, check whether it is dead */ - xbuf = mdd_buf_get(env, info->mti_key, sizeof(info->mti_key)); - rc = mdo_xattr_get(env, pobj, xbuf, XATTR_NAME_LMV, - mdd_object_capa(env, pobj)); - if (unlikely(rc > 0)) { - struct lmv_mds_md_v1 *lmv1 = xbuf->lb_buf; - - if (le32_to_cpu(lmv1->lmv_magic) == LMV_MAGIC_STRIPE && - le32_to_cpu(lmv1->lmv_hash_type) & LMV_HASH_FLAG_DEAD) - RETURN(-ESTALE); - } - rc = 0; - if (check_perm) rc = mdd_permission_internal_locked(env, pobj, pattr, MAY_WRITE | MAY_EXEC, - MOR_TGT_PARENT); + DT_TGT_PARENT); RETURN(rc); } @@ -380,17 +470,16 @@ int mdd_may_unlink(const struct lu_env *env, struct mdd_object *pobj, if (mdd_is_dead_obj(pobj)) RETURN(-ENOENT); - if ((attr->la_valid & LA_FLAGS) && - (attr->la_flags & (LUSTRE_APPEND_FL | LUSTRE_IMMUTABLE_FL))) + if (attr->la_flags & (LUSTRE_APPEND_FL | LUSTRE_IMMUTABLE_FL)) RETURN(-EPERM); rc = mdd_permission_internal_locked(env, pobj, pattr, MAY_WRITE | MAY_EXEC, - MOR_TGT_PARENT); - if (rc) + DT_TGT_PARENT); + if (rc != 0) RETURN(rc); - if (mdd_is_append(pobj)) + if (pattr->la_flags & LUSTRE_APPEND_FL) RETURN(-EPERM); RETURN(rc); @@ -440,12 +529,12 @@ static int mdd_may_delete_entry(const struct lu_env *env, int rc; rc = mdd_permission_internal_locked(env, pobj, pattr, MAY_WRITE | MAY_EXEC, - MOR_TGT_PARENT); + DT_TGT_PARENT); if (rc) RETURN(rc); } - if (mdd_is_append(pobj)) + if (pattr->la_flags & LUSTRE_APPEND_FL) RETURN(-EPERM); RETURN(0); @@ -482,11 +571,7 @@ int mdd_may_delete(const struct lu_env *env, struct mdd_object *tpobj, if (mdd_is_sticky(env, tpobj, tpattr, tobj, tattr)) RETURN(-EPERM); - if (mdd_is_immutable(tobj) || mdd_is_append(tobj)) - RETURN(-EPERM); - - if ((tattr->la_valid & LA_FLAGS) && - (tattr->la_flags & (LUSTRE_APPEND_FL | LUSTRE_IMMUTABLE_FL))) + if (tattr->la_flags & (LUSTRE_APPEND_FL | LUSTRE_IMMUTABLE_FL)) RETURN(-EPERM); /* additional check the rename case */ @@ -546,11 +631,11 @@ static int mdd_link_sanity_check(const struct lu_env *env, if (rc < 0) RETURN(rc); - if (mdd_is_immutable(src_obj) || mdd_is_append(src_obj)) - RETURN(-EPERM); + if (cattr->la_flags & (LUSTRE_IMMUTABLE_FL | LUSTRE_APPEND_FL)) + RETURN(-EPERM); - if (S_ISDIR(mdd_object_type(src_obj))) - RETURN(-EPERM); + if (S_ISDIR(mdd_object_type(src_obj))) + RETURN(-EPERM); LASSERT(src_obj != tgt_obj); rc = mdd_may_create(env, tgt_obj, tattr, NULL, true); @@ -563,15 +648,14 @@ static int mdd_link_sanity_check(const struct lu_env *env, } static int __mdd_index_delete_only(const struct lu_env *env, struct mdd_object *pobj, - const char *name, struct thandle *handle, - struct lustre_capa *capa) + const char *name, struct thandle *handle) { struct dt_object *next = mdd_object_child(pobj); int rc; ENTRY; if (dt_try_as_dir(env, next)) - rc = dt_delete(env, next, (struct dt_key *)name, handle, capa); + rc = dt_delete(env, next, (struct dt_key *)name, handle); else rc = -ENOTDIR; @@ -582,8 +666,7 @@ static int __mdd_index_insert_only(const struct lu_env *env, struct mdd_object *pobj, const struct lu_fid *lf, __u32 type, const char *name, - struct thandle *handle, - struct lustre_capa *capa) + struct thandle *handle) { struct dt_object *next = mdd_object_child(pobj); int rc; @@ -591,15 +674,11 @@ static int __mdd_index_insert_only(const struct lu_env *env, if (dt_try_as_dir(env, next)) { struct dt_insert_rec *rec = &mdd_env_info(env)->mti_dt_rec; - struct lu_ucred *uc = lu_ucred_check(env); - int ignore_quota; rec->rec_fid = lf; rec->rec_type = type; - ignore_quota = uc ? uc->uc_cap & CFS_CAP_SYS_RESOURCE_MASK : 1; rc = dt_insert(env, next, (const struct dt_rec *)rec, - (const struct dt_key *)name, handle, capa, - ignore_quota); + (const struct dt_key *)name, handle); } else { rc = -ENOTDIR; } @@ -609,15 +688,14 @@ static int __mdd_index_insert_only(const struct lu_env *env, /* insert named index, add reference if isdir */ static int __mdd_index_insert(const struct lu_env *env, struct mdd_object *pobj, const struct lu_fid *lf, __u32 type, - const char *name, struct thandle *handle, - struct lustre_capa *capa) + const char *name, struct thandle *handle) { int rc; ENTRY; - rc = __mdd_index_insert_only(env, pobj, lf, type, name, handle, capa); + rc = __mdd_index_insert_only(env, pobj, lf, type, name, handle); if (rc == 0 && S_ISDIR(type)) { - mdd_write_lock(env, pobj, MOR_TGT_PARENT); + mdd_write_lock(env, pobj, DT_TGT_PARENT); mdo_ref_add(env, pobj, handle); mdd_write_unlock(env, pobj); } @@ -627,20 +705,20 @@ static int __mdd_index_insert(const struct lu_env *env, struct mdd_object *pobj, /* delete named index, drop reference if isdir */ static int __mdd_index_delete(const struct lu_env *env, struct mdd_object *pobj, - const char *name, int is_dir, struct thandle *handle, - struct lustre_capa *capa) + const char *name, int is_dir, + struct thandle *handle) { - int rc; - ENTRY; + int rc; + ENTRY; - rc = __mdd_index_delete_only(env, pobj, name, handle, capa); - if (rc == 0 && is_dir) { - mdd_write_lock(env, pobj, MOR_TGT_PARENT); - mdo_ref_del(env, pobj, handle); - mdd_write_unlock(env, pobj); - } + rc = __mdd_index_delete_only(env, pobj, name, handle); + if (rc == 0 && is_dir) { + mdd_write_lock(env, pobj, DT_TGT_PARENT); + mdo_ref_del(env, pobj, handle); + mdd_write_unlock(env, pobj); + } - RETURN(rc); + RETURN(rc); } static int mdd_llog_record_calc_size(const struct lu_env *env, @@ -648,23 +726,24 @@ static int mdd_llog_record_calc_size(const struct lu_env *env, const struct lu_name *sname) { const struct lu_ucred *uc = lu_ucred(env); - enum changelog_rec_flags crf = 0; - size_t hdr_size = sizeof(struct llog_changelog_rec) - - sizeof(struct changelog_rec); + enum changelog_rec_flags clf_flags = CLF_EXTRA_FLAGS; + enum changelog_rec_extra_flags crfe = CLFE_UIDGID | CLFE_NID; if (sname != NULL) - crf |= CLF_RENAME; + clf_flags |= CLF_RENAME; if (uc != NULL && uc->uc_jobid[0] != '\0') - crf |= CLF_JOBID; + clf_flags |= CLF_JOBID; - return llog_data_len(hdr_size + changelog_rec_offset(crf) + + return llog_data_len(LLOG_CHANGELOG_HDR_SZ + + changelog_rec_offset(clf_flags, crfe) + (tname != NULL ? tname->ln_namelen : 0) + (sname != NULL ? 1 + sname->ln_namelen : 0)); } int mdd_declare_changelog_store(const struct lu_env *env, struct mdd_device *mdd, + enum changelog_rec_type type, const struct lu_name *tname, const struct lu_name *sname, struct thandle *handle) @@ -673,11 +752,11 @@ int mdd_declare_changelog_store(const struct lu_env *env, struct llog_ctxt *ctxt; struct llog_changelog_rec *rec; struct lu_buf *buf; + struct thandle *llog_th; int reclen; int rc; - /* Not recording */ - if (!(mdd->mdd_cl.mc_flags & CLM_ON)) + if (!mdd_changelog_enabled(env, mdd, type)) return 0; reclen = mdd_llog_record_calc_size(env, tname, sname); @@ -693,7 +772,13 @@ int mdd_declare_changelog_store(const struct lu_env *env, if (ctxt == NULL) return -ENXIO; - rc = llog_declare_add(env, ctxt->loc_handle, &rec->cr_hdr, handle); + llog_th = thandle_get_sub(env, handle, ctxt->loc_handle->lgh_obj); + if (IS_ERR(llog_th)) + GOTO(out_put, rc = PTR_ERR(llog_th)); + + rc = llog_declare_add(env, ctxt->loc_handle, &rec->cr_hdr, llog_th); + +out_put: llog_ctxt_put(ctxt); return rc; @@ -711,6 +796,7 @@ int mdd_changelog_store(const struct lu_env *env, struct mdd_device *mdd, { struct obd_device *obd = mdd2obd_dev(mdd); struct llog_ctxt *ctxt; + struct thandle *llog_th; int rc; rec->cr_hdr.lrh_len = llog_data_len(sizeof(*rec) + @@ -731,12 +817,49 @@ int mdd_changelog_store(const struct lu_env *env, struct mdd_device *mdd, if (ctxt == NULL) return -ENXIO; + llog_th = thandle_get_sub(env, th, ctxt->loc_handle->lgh_obj); + if (IS_ERR(llog_th)) + GOTO(out_put, rc = PTR_ERR(llog_th)); + /* nested journal transaction */ - rc = llog_add(env, ctxt->loc_handle, &rec->cr_hdr, NULL, th); + rc = llog_add(env, ctxt->loc_handle, &rec->cr_hdr, NULL, llog_th); + + /* time to recover some space ?? */ + if (likely(!mdd->mdd_changelog_gc || + mdd->mdd_cl.mc_gc_task != MDD_CHLG_GC_NONE || + mdd->mdd_changelog_min_gc_interval >= + ktime_get_real_seconds() - mdd->mdd_cl.mc_gc_time)) + /* save a spin_lock trip */ + goto out_put; + spin_lock(&mdd->mdd_cl.mc_lock); + if (likely(mdd->mdd_changelog_gc && + mdd->mdd_cl.mc_gc_task == MDD_CHLG_GC_NONE && + ktime_get_real_seconds() - mdd->mdd_cl.mc_gc_time > + mdd->mdd_changelog_min_gc_interval)) { + if (unlikely(llog_cat_free_space(ctxt->loc_handle) <= + mdd->mdd_changelog_min_free_cat_entries || + OBD_FAIL_CHECK(OBD_FAIL_FORCE_GC_THREAD))) { + CWARN("%s:%s low on changelog_catalog free entries, " + "starting ChangeLog garbage collection thread\n", + obd->obd_name, + OBD_FAIL_CHECK(OBD_FAIL_FORCE_GC_THREAD) ? + " simulate" : ""); + + /* indicate further kthread run will occur outside + * right after current journal transaction filling has + * completed + */ + mdd->mdd_cl.mc_gc_task = MDD_CHLG_GC_NEED; + } + /* next check in mdd_changelog_min_gc_interval anyway + */ + mdd->mdd_cl.mc_gc_time = ktime_get_real_seconds(); + } + spin_unlock(&mdd->mdd_cl.mc_lock); +out_put: llog_ctxt_put(ctxt); if (rc > 0) rc = 0; - return rc; } @@ -745,13 +868,15 @@ static void mdd_changelog_rec_ext_rename(struct changelog_rec *rec, const struct lu_fid *spfid, const struct lu_name *sname) { - struct changelog_ext_rename *rnm = changelog_rec_rename(rec); - size_t extsize = sname->ln_namelen + 1; + struct changelog_ext_rename *rnm = changelog_rec_rename(rec); + size_t extsize; LASSERT(sfid != NULL); LASSERT(spfid != NULL); LASSERT(sname != NULL); + extsize = sname->ln_namelen + 1; + rnm->cr_sfid = *sfid; rnm->cr_spfid = *spfid; @@ -762,7 +887,7 @@ static void mdd_changelog_rec_ext_rename(struct changelog_rec *rec, void mdd_changelog_rec_ext_jobid(struct changelog_rec *rec, const char *jobid) { - struct changelog_ext_jobid *jid = changelog_rec_jobid(rec); + struct changelog_ext_jobid *jid = changelog_rec_jobid(rec); if (jobid == NULL || jobid[0] == '\0') return; @@ -770,6 +895,45 @@ void mdd_changelog_rec_ext_jobid(struct changelog_rec *rec, const char *jobid) strlcpy(jid->cr_jobid, jobid, sizeof(jid->cr_jobid)); } +void mdd_changelog_rec_ext_extra_flags(struct changelog_rec *rec, __u64 eflags) +{ + struct changelog_ext_extra_flags *ef = changelog_rec_extra_flags(rec); + + ef->cr_extra_flags = eflags; +} + +void mdd_changelog_rec_extra_uidgid(struct changelog_rec *rec, + __u64 uid, __u64 gid) +{ + struct changelog_ext_uidgid *uidgid = changelog_rec_uidgid(rec); + + uidgid->cr_uid = uid; + uidgid->cr_gid = gid; +} + +void mdd_changelog_rec_extra_nid(struct changelog_rec *rec, + lnet_nid_t nid) +{ + struct changelog_ext_nid *clnid = changelog_rec_nid(rec); + + clnid->cr_nid = nid; +} + +void mdd_changelog_rec_extra_omode(struct changelog_rec *rec, u32 flags) +{ + struct changelog_ext_openmode *omd = changelog_rec_openmode(rec); + + omd->cr_openflags = flags; +} + +void mdd_changelog_rec_extra_xattr(struct changelog_rec *rec, + const char *xattr_name) +{ + struct changelog_ext_xattr *xattr = changelog_rec_xattr(rec); + + strlcpy(xattr->cr_xattr, xattr_name, sizeof(xattr->cr_xattr)); +} + /** Store a namespace change changelog record * If this fails, we must fail the whole transaction; we don't * want the change to commit without the log entry. @@ -779,12 +943,12 @@ void mdd_changelog_rec_ext_jobid(struct changelog_rec *rec, const char *jobid) * \param spfid - source parent fid * \param tname - target name string * \param sname - source name string - * \param handle - transacion handle + * \param handle - transaction handle */ int mdd_changelog_ns_store(const struct lu_env *env, struct mdd_device *mdd, enum changelog_rec_type type, - enum changelog_rec_flags crf, + enum changelog_rec_flags clf_flags, struct mdd_object *target, const struct lu_fid *tpfid, const struct lu_fid *sfid, @@ -797,14 +961,11 @@ int mdd_changelog_ns_store(const struct lu_env *env, struct llog_changelog_rec *rec; struct lu_buf *buf; int reclen; + __u64 xflags = CLFE_INVALID; int rc; ENTRY; - /* Not recording */ - if (!(mdd->mdd_cl.mc_flags & CLM_ON)) - RETURN(0); - - if ((mdd->mdd_cl.mc_mask & (1 << type)) == 0) + if (!mdd_changelog_enabled(env, mdd, type)) RETURN(0); LASSERT(tpfid != NULL); @@ -817,39 +978,56 @@ int mdd_changelog_ns_store(const struct lu_env *env, RETURN(-ENOMEM); rec = buf->lb_buf; - crf = (crf & CLF_FLAGMASK); + clf_flags &= CLF_FLAGMASK; + clf_flags |= CLF_EXTRA_FLAGS; - if (uc->uc_jobid[0] != '\0') - crf |= CLF_JOBID; + if (uc) { + if (uc->uc_jobid[0] != '\0') + clf_flags |= CLF_JOBID; + xflags |= CLFE_UIDGID; + xflags |= CLFE_NID; + } if (sname != NULL) - crf |= CLF_RENAME; + clf_flags |= CLF_RENAME; else - crf |= CLF_VERSION; + clf_flags |= CLF_VERSION; + + rec->cr.cr_flags = clf_flags; + + if (clf_flags & CLF_EXTRA_FLAGS) { + mdd_changelog_rec_ext_extra_flags(&rec->cr, xflags); + if (xflags & CLFE_UIDGID) + mdd_changelog_rec_extra_uidgid(&rec->cr, + uc->uc_uid, uc->uc_gid); + if (xflags & CLFE_NID) + mdd_changelog_rec_extra_nid(&rec->cr, uc->uc_nid); + } - rec->cr.cr_flags = crf; rec->cr.cr_type = (__u32)type; rec->cr.cr_pfid = *tpfid; rec->cr.cr_namelen = tname->ln_namelen; memcpy(changelog_rec_name(&rec->cr), tname->ln_name, tname->ln_namelen); - if (crf & CLF_RENAME) + if (clf_flags & CLF_RENAME) mdd_changelog_rec_ext_rename(&rec->cr, sfid, spfid, sname); - if (crf & CLF_JOBID) + if (clf_flags & CLF_JOBID) mdd_changelog_rec_ext_jobid(&rec->cr, uc->uc_jobid); if (likely(target != NULL)) { rec->cr.cr_tfid = *mdo2fid(target); - target->mod_cltime = cfs_time_current_64(); + target->mod_cltime = ktime_get(); } else { fid_zero(&rec->cr.cr_tfid); } rc = mdd_changelog_store(env, mdd, rec, handle); if (rc < 0) { - CERROR("changelog failed: rc=%d, op%d %s c"DFID" p"DFID"\n", - rc, type, tname->ln_name, PFID(sfid), PFID(tpfid)); + CERROR("%s: cannot store changelog record: type = %d, " + "name = '%s', t = "DFID", p = "DFID": rc = %d\n", + mdd2obd_dev(mdd)->obd_name, type, tname->ln_name, + PFID(&rec->cr.cr_tfid), PFID(&rec->cr.cr_pfid), rc); return -EFAULT; } @@ -931,41 +1109,32 @@ static int mdd_linkea_prepare(const struct lu_env *env, struct linkea_data *ldata) { int rc = 0; - int rc2 = 0; ENTRY; if (OBD_FAIL_CHECK(OBD_FAIL_FID_IGIF)) - return 0; + RETURN(0); LASSERT(oldpfid != NULL || newpfid != NULL); - if (mdd_obj->mod_flags & DEAD_OBJ) { - /* Prevent linkea to be updated which is NOT necessary. */ - ldata->ld_reclen = 0; - /* No more links, don't bother */ + if (mdd_obj->mod_flags & DEAD_OBJ) + /* Unnecessary to update linkEA for dead object. */ RETURN(0); - } if (oldpfid != NULL) { rc = __mdd_links_del(env, mdd_obj, ldata, oldlname, oldpfid); if (rc) { - if ((check == 1) || - (rc != -ENODATA && rc != -ENOENT)) + if ((check == 1) || (rc != -ENODATA && rc != -ENOENT)) RETURN(rc); + /* No changes done. */ rc = 0; } } /* If renaming, add the new record */ - if (newpfid != NULL) { - /* even if the add fails, we still delete the out-of-date - * old link */ - rc2 = __mdd_links_add(env, mdd_obj, ldata, newlname, newpfid, - first, check); - } - - rc = rc != 0 ? rc : rc2; + if (newpfid != NULL) + rc = __mdd_links_add(env, mdd_obj, ldata, newlname, newpfid, + first, check); RETURN(rc); } @@ -987,40 +1156,37 @@ int mdd_links_rename(const struct lu_env *env, ldata = &mdd_env_info(env)->mti_link_data; memset(ldata, 0, sizeof(*ldata)); rc = mdd_linkea_prepare(env, mdd_obj, oldpfid, oldlname, - newpfid, newlname, first, check, - ldata); - if (rc != 0) + newpfid, newlname, first, check, ldata); + if (rc) GOTO(out, rc); } - if (ldata->ld_reclen != 0) + if (!(mdd_obj->mod_flags & DEAD_OBJ)) rc = mdd_links_write(env, mdd_obj, ldata, handle); - EXIT; + + GOTO(out, rc); + out: if (rc != 0) { - int error = 1; - if (rc == -EOVERFLOW || rc == -ENOSPC) - error = 0; - if (oldpfid == NULL) - CDEBUG(error ? D_ERROR : D_OTHER, - "link_ea add '%.*s' failed %d "DFID"\n", - newlname->ln_namelen, newlname->ln_name, + if (newlname == NULL) + CERROR("link_ea add failed %d "DFID"\n", rc, PFID(mdd_object_fid(mdd_obj))); + else if (oldpfid == NULL) + CERROR("link_ea add '%.*s' failed %d "DFID"\n", + newlname->ln_namelen, newlname->ln_name, rc, + PFID(mdd_object_fid(mdd_obj))); else if (newpfid == NULL) - CDEBUG(error ? D_ERROR : D_OTHER, - "link_ea del '%.*s' failed %d "DFID"\n", - oldlname->ln_namelen, oldlname->ln_name, - rc, PFID(mdd_object_fid(mdd_obj))); + CERROR("link_ea del '%.*s' failed %d "DFID"\n", + oldlname->ln_namelen, oldlname->ln_name, rc, + PFID(mdd_object_fid(mdd_obj))); else - CDEBUG(error ? D_ERROR : D_OTHER, - "link_ea rename '%.*s'->'%.*s' failed %d " - DFID"\n", - oldlname->ln_namelen, oldlname->ln_name, - newlname->ln_namelen, newlname->ln_name, - rc, PFID(mdd_object_fid(mdd_obj))); + CERROR("link_ea rename '%.*s'->'%.*s' failed %d "DFID + "\n", oldlname->ln_namelen, oldlname->ln_name, + newlname->ln_namelen, newlname->ln_name, rc, + PFID(mdd_object_fid(mdd_obj))); } - if (ldata->ld_buf && ldata->ld_buf->lb_len > OBD_ALLOC_BIG) + if (is_vmalloc_addr(ldata->ld_buf)) /* if we vmalloced a large buffer drop it */ lu_buf_free(ldata->ld_buf); @@ -1049,51 +1215,6 @@ static inline int mdd_links_del(const struct lu_env *env, } /** Read the link EA into a temp buffer. - * Uses the mdd_thread_info::mti_big_buf since it is generally large. - * A pointer to the buffer is stored in \a ldata::ld_buf. - * - * \retval 0 or error - */ -int mdd_links_read(const struct lu_env *env, struct mdd_object *mdd_obj, - struct linkea_data *ldata) -{ - int rc; - - if (!mdd_object_exists(mdd_obj)) - return -ENODATA; - - /* First try a small buf */ - LASSERT(env != NULL); - ldata->ld_buf = lu_buf_check_and_alloc(&mdd_env_info(env)->mti_link_buf, - PAGE_CACHE_SIZE); - if (ldata->ld_buf->lb_buf == NULL) - return -ENOMEM; - - rc = mdo_xattr_get(env, mdd_obj, ldata->ld_buf, XATTR_NAME_LINK, - BYPASS_CAPA); - if (rc == -ERANGE) { - /* Buf was too small, figure out what we need. */ - lu_buf_free(ldata->ld_buf); - rc = mdo_xattr_get(env, mdd_obj, ldata->ld_buf, - XATTR_NAME_LINK, BYPASS_CAPA); - if (rc < 0) - return rc; - ldata->ld_buf = lu_buf_check_and_alloc(ldata->ld_buf, rc); - if (ldata->ld_buf->lb_buf == NULL) - return -ENOMEM; - rc = mdo_xattr_get(env, mdd_obj, ldata->ld_buf, - XATTR_NAME_LINK, BYPASS_CAPA); - } - if (rc < 0) { - lu_buf_free(ldata->ld_buf); - ldata->ld_buf = NULL; - return rc; - } - - return linkea_init(ldata); -} - -/** Read the link EA into a temp buffer. * Uses the name_buf since it is generally large. * \retval IS_ERR err * \retval ptr to \a lu_buf (always \a mti_big_buf) @@ -1101,7 +1222,7 @@ int mdd_links_read(const struct lu_env *env, struct mdd_object *mdd_obj, struct lu_buf *mdd_links_get(const struct lu_env *env, struct mdd_object *mdd_obj) { - struct linkea_data ldata = { 0 }; + struct linkea_data ldata = { NULL }; int rc; rc = mdd_links_read(env, mdd_obj, &ldata); @@ -1111,18 +1232,33 @@ struct lu_buf *mdd_links_get(const struct lu_env *env, int mdd_links_write(const struct lu_env *env, struct mdd_object *mdd_obj, struct linkea_data *ldata, struct thandle *handle) { - const struct lu_buf *buf = mdd_buf_get_const(env, ldata->ld_buf->lb_buf, - ldata->ld_leh->leh_len); + const struct lu_buf *buf; + int rc; + + if (ldata == NULL || ldata->ld_buf == NULL || + ldata->ld_leh == NULL) + return 0; if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_NO_LINKEA)) return 0; - return mdo_xattr_set(env, mdd_obj, buf, XATTR_NAME_LINK, 0, handle, - mdd_object_capa(env, mdd_obj)); +again: + buf = mdd_buf_get_const(env, ldata->ld_buf->lb_buf, + ldata->ld_leh->leh_len); + rc = mdo_xattr_set(env, mdd_obj, buf, XATTR_NAME_LINK, 0, handle); + if (unlikely(rc == -ENOSPC)) { + rc = linkea_overflow_shrink(ldata); + if (likely(rc > 0)) + goto again; + } + + return rc; } -int mdd_declare_links_add(const struct lu_env *env, struct mdd_object *mdd_obj, - struct thandle *handle, struct linkea_data *ldata) +static int mdd_declare_links_add(const struct lu_env *env, + struct mdd_object *mdd_obj, + struct thandle *handle, + struct linkea_data *ldata) { int rc; int ea_len; @@ -1132,14 +1268,14 @@ int mdd_declare_links_add(const struct lu_env *env, struct mdd_object *mdd_obj, ea_len = ldata->ld_leh->leh_len; linkea = ldata->ld_buf->lb_buf; } else { - ea_len = DEFAULT_LINKEA_SIZE; + ea_len = MAX_LINKEA_SIZE; linkea = NULL; } - /* XXX: max size? */ rc = mdo_declare_xattr_set(env, mdd_obj, mdd_buf_get_const(env, linkea, ea_len), XATTR_NAME_LINK, 0, handle); + return rc; } @@ -1166,15 +1302,19 @@ static int mdd_declare_link(const struct lu_env *env, struct lu_attr *la, struct linkea_data *data) { + struct lu_fid tfid = *mdo2fid(c); int rc; - rc = mdo_declare_index_insert(env, p, mdo2fid(c), mdd_object_type(c), + if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DANGLING3)) + tfid.f_oid = cfs_fail_val; + + rc = mdo_declare_index_insert(env, p, &tfid, mdd_object_type(c), name->ln_name, handle); if (rc != 0) return rc; rc = mdo_declare_ref_add(env, c, handle); - if (rc) + if (rc != 0) return rc; la->la_valid = LA_CTIME | LA_MTIME; @@ -1184,14 +1324,15 @@ static int mdd_declare_link(const struct lu_env *env, la->la_valid = LA_CTIME; rc = mdo_declare_attr_set(env, c, la, handle); - if (rc) + if (rc != 0) return rc; rc = mdd_declare_links_add(env, c, handle, data); - if (rc) + if (rc != 0) return rc; - rc = mdd_declare_changelog_store(env, mdd, name, NULL, handle); + rc = mdd_declare_changelog_store(env, mdd, CL_HARDLINK, name, NULL, + handle); return rc; } @@ -1206,20 +1347,30 @@ static int mdd_link(const struct lu_env *env, struct md_object *tgt_obj, struct mdd_object *mdd_sobj = md2mdd_obj(src_obj); struct lu_attr *cattr = MDD_ENV_VAR(env, cattr); struct lu_attr *tattr = MDD_ENV_VAR(env, tattr); - struct mdd_device *mdd = mdo2mdd(src_obj); - struct thandle *handle; + struct mdd_device *mdd = mdo2mdd(src_obj); + struct thandle *handle; + struct lu_fid *tfid = &mdd_env_info(env)->mti_fid2; struct linkea_data *ldata = &mdd_env_info(env)->mti_link_data; int rc; ENTRY; - rc = mdd_la_get(env, mdd_sobj, cattr, BYPASS_CAPA); + rc = mdd_la_get(env, mdd_sobj, cattr); if (rc != 0) RETURN(rc); - rc = mdd_la_get(env, mdd_tobj, tattr, BYPASS_CAPA); + rc = mdd_la_get(env, mdd_tobj, tattr); if (rc != 0) RETURN(rc); + /* + * If we are using project inheritance, we only allow hard link + * creation in our tree when the project IDs are the same; + * otherwise the tree quota mechanism could be circumvented. + */ + if ((tattr->la_flags & LUSTRE_PROJINHERIT_FL) && + (tattr->la_projid != cattr->la_projid)) + RETURN(-EXDEV); + handle = mdd_trans_create(env, mdd); if (IS_ERR(handle)) GOTO(out_pending, rc = PTR_ERR(handle)); @@ -1229,6 +1380,14 @@ static int mdd_link(const struct lu_env *env, struct md_object *tgt_obj, LASSERT(ma->ma_attr.la_valid & LA_CTIME); la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime; + /* Note: even this function will change ldata, but it comes from + * thread_info, which is completely temporary and only seen in + * this function, so we do not need reset ldata once it fails.*/ + rc = mdd_linkea_prepare(env, mdd_sobj, NULL, NULL, mdo2fid(mdd_tobj), + lname, 0, 0, ldata); + if (rc != 0) + GOTO(stop, rc); + rc = mdd_declare_link(env, mdd, mdd_tobj, mdd_sobj, lname, handle, la, ldata); if (rc) @@ -1238,32 +1397,24 @@ static int mdd_link(const struct lu_env *env, struct md_object *tgt_obj, if (rc) GOTO(stop, rc); - mdd_write_lock(env, mdd_sobj, MOR_TGT_CHILD); + mdd_write_lock(env, mdd_sobj, DT_TGT_CHILD); rc = mdd_link_sanity_check(env, mdd_tobj, tattr, lname, mdd_sobj, cattr); if (rc) GOTO(out_unlock, rc); - rc = mdo_ref_add(env, mdd_sobj, handle); - if (rc) - GOTO(out_unlock, rc); - + if (!OBD_FAIL_CHECK(OBD_FAIL_LFSCK_LESS_NLINK)) { + rc = mdo_ref_add(env, mdd_sobj, handle); + if (rc != 0) + GOTO(out_unlock, rc); + } - if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DANGLING3)) { - struct lu_fid tfid = *mdo2fid(mdd_sobj); - - tfid.f_oid++; - rc = __mdd_index_insert_only(env, mdd_tobj, &tfid, - mdd_object_type(mdd_sobj), - name, handle, - mdd_object_capa(env, mdd_tobj)); - } else { - rc = __mdd_index_insert_only(env, mdd_tobj, mdo2fid(mdd_sobj), - mdd_object_type(mdd_sobj), - name, handle, - mdd_object_capa(env, mdd_tobj)); - } + *tfid = *mdo2fid(mdd_sobj); + if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DANGLING3)) + tfid->f_oid = cfs_fail_val; + rc = __mdd_index_insert_only(env, mdd_tobj, tfid, + mdd_object_type(mdd_sobj), name, handle); if (rc != 0) { mdo_ref_del(env, mdd_sobj, handle); GOTO(out_unlock, rc); @@ -1276,55 +1427,45 @@ static int mdd_link(const struct lu_env *env, struct md_object *tgt_obj, la->la_valid = LA_CTIME; rc = mdd_update_time(env, mdd_sobj, cattr, la, handle); - if (rc == 0) { - rc = mdd_linkea_prepare(env, mdd_sobj, NULL, NULL, - mdo2fid(mdd_tobj), lname, 0, 0, - ldata); - if (rc == 0) - mdd_links_add(env, mdd_sobj, mdo2fid(mdd_tobj), - lname, handle, ldata, 0); - /* The failure of links_add should not cause the link - * failure, reset rc here */ - rc = 0; - } - EXIT; + if (rc == 0) + /* Note: The failure of links_add should not cause the + * link failure, so do not check return value. */ + mdd_links_add(env, mdd_sobj, mdo2fid(mdd_tobj), + lname, handle, ldata, 0); + + EXIT; out_unlock: - mdd_write_unlock(env, mdd_sobj); - if (rc == 0) + mdd_write_unlock(env, mdd_sobj); + if (rc == 0) rc = mdd_changelog_ns_store(env, mdd, CL_HARDLINK, 0, mdd_sobj, mdo2fid(mdd_tobj), NULL, NULL, lname, NULL, handle); stop: - mdd_trans_stop(env, mdd, rc, handle); - - if (ldata->ld_buf && ldata->ld_buf->lb_len > OBD_ALLOC_BIG) + rc = mdd_trans_stop(env, mdd, rc, handle); + if (is_vmalloc_addr(ldata->ld_buf)) /* if we vmalloced a large buffer drop it */ lu_buf_free(ldata->ld_buf); out_pending: - return rc; + return rc; } -static int mdd_mark_dead_object(const struct lu_env *env, +static int mdd_mark_orphan_object(const struct lu_env *env, struct mdd_object *obj, struct thandle *handle, bool declare) { struct lu_attr *attr = MDD_ENV_VAR(env, la_for_start); int rc; - if (!declare) - obj->mod_flags |= DEAD_OBJ; - if (!S_ISDIR(mdd_object_type(obj))) return 0; attr->la_valid = LA_FLAGS; - attr->la_flags = LUSTRE_SLAVE_DEAD_FL; + attr->la_flags = LUSTRE_ORPHAN_FL; if (declare) rc = mdo_declare_attr_set(env, obj, attr, handle); else - rc = mdo_attr_set(env, obj, attr, handle, - mdd_object_capa(env, obj)); + rc = mdo_attr_set(env, obj, attr, handle); return rc; } @@ -1333,17 +1474,20 @@ static int mdd_declare_finish_unlink(const struct lu_env *env, struct mdd_object *obj, struct thandle *handle) { - int rc; + int rc; - rc = mdd_mark_dead_object(env, obj, handle, true); + /* Sigh, we do not know if the unlink object will become orphan in + * declare phase, but fortunately the flags here does not matter + * in current declare implementation */ + rc = mdd_mark_orphan_object(env, obj, handle, true); if (rc != 0) return rc; - rc = orph_declare_index_insert(env, obj, mdd_object_type(obj), handle); + rc = mdo_declare_destroy(env, obj, handle); if (rc != 0) return rc; - rc = mdo_declare_destroy(env, obj, handle); + rc = mdd_orphan_declare_insert(env, obj, mdd_object_type(obj), handle); if (rc != 0) return rc; @@ -1358,34 +1502,37 @@ int mdd_finish_unlink(const struct lu_env *env, struct thandle *th) { int rc = 0; - int is_dir = S_ISDIR(ma->ma_attr.la_mode); - ENTRY; + int is_dir = S_ISDIR(ma->ma_attr.la_mode); + ENTRY; - LASSERT(mdd_write_locked(env, obj) != 0); + LASSERT(mdd_write_locked(env, obj) != 0); if (ma->ma_attr.la_nlink == 0 || is_dir) { - rc = mdd_mark_dead_object(env, obj, th, false); - if (rc != 0) - RETURN(rc); - - /* add new orphan and the object - * will be deleted during mdd_close() */ - if (obj->mod_count) { - rc = __mdd_orphan_add(env, obj, th); - if (rc == 0) - CDEBUG(D_HA, "Object "DFID" is inserted into " - "orphan list, open count = %d\n", - PFID(mdd_object_fid(obj)), - obj->mod_count); - else - CERROR("Object "DFID" fail to be an orphan, " - "open count = %d, maybe cause failed " - "open replay\n", - PFID(mdd_object_fid(obj)), - obj->mod_count); - } else { + /* add new orphan and the object + * will be deleted during mdd_close() */ + obj->mod_flags |= DEAD_OBJ; + if (obj->mod_count) { + rc = mdd_orphan_insert(env, obj, th); + if (rc == 0) + CDEBUG(D_HA, "Object "DFID" is inserted into " + "orphan list, open count = %d\n", + PFID(mdd_object_fid(obj)), + obj->mod_count); + else + CERROR("Object "DFID" fail to be an orphan, " + "open count = %d, maybe cause failed " + "open replay\n", + PFID(mdd_object_fid(obj)), + obj->mod_count); + + /* mark object as an orphan here, not + * before mdd_orphan_insert() as racing + * mdd_la_get() may propagate ORPHAN_OBJ + * causing the asserition */ + rc = mdd_mark_orphan_object(env, obj, th, false); + } else { rc = mdo_destroy(env, obj, th); - } + } } else if (!is_dir) { /* old files may not have link ea; ignore errors */ mdd_links_del(env, obj, mdo2fid(pobj), lname, th); @@ -1460,7 +1607,8 @@ static int mdd_declare_unlink(const struct lu_env *env, struct mdd_device *mdd, return rc; /* FIXME: need changelog for remove entry */ - rc = mdd_declare_changelog_store(env, mdd, name, NULL, handle); + rc = mdd_declare_changelog_store(env, mdd, CL_UNLINK, name, + NULL, handle); } return rc; @@ -1485,14 +1633,13 @@ static bool mdd_hsm_archive_exists(const struct lu_env *env, hsm_buf = mdd_buf_get(env, NULL, 0); lu_buf_alloc(hsm_buf, buflen); - rc = mdo_xattr_get(env, obj, hsm_buf, XATTR_NAME_HSM, - mdd_object_capa(env, obj)); + rc = mdo_xattr_get(env, obj, hsm_buf, XATTR_NAME_HSM); rc = lustre_buf2hsm(hsm_buf->lb_buf, rc, &ma->ma_hsm); lu_buf_free(hsm_buf); if (rc < 0) RETURN(false); - ma->ma_valid = MA_HSM; + ma->ma_valid |= MA_HSM; } if (ma->ma_hsm.mh_flags & HS_EXISTS) RETURN(true); @@ -1520,9 +1667,12 @@ static int mdd_unlink(const struct lu_env *env, struct md_object *pobj, struct mdd_object *mdd_cobj = NULL; struct mdd_device *mdd = mdo2mdd(pobj); struct thandle *handle; - int rc, is_dir = 0; + int rc, is_dir = 0, cl_flags = 0; ENTRY; + /* let shutdown to start */ + CFS_FAIL_TIMEOUT(OBD_FAIL_TGT_REPLY_DATA_RACE, 1); + /* cobj == NULL means only delete name entry */ if (likely(cobj != NULL)) { mdd_cobj = md2mdd_obj(cobj); @@ -1530,17 +1680,22 @@ static int mdd_unlink(const struct lu_env *env, struct md_object *pobj, RETURN(-ENOENT); } - rc = mdd_la_get(env, mdd_pobj, pattr, BYPASS_CAPA); + rc = mdd_la_get(env, mdd_pobj, pattr); if (rc) RETURN(rc); if (likely(mdd_cobj != NULL)) { /* fetch cattr */ - rc = mdd_la_get(env, mdd_cobj, cattr, BYPASS_CAPA); + rc = mdd_la_get(env, mdd_cobj, cattr); if (rc) RETURN(rc); is_dir = S_ISDIR(cattr->la_mode); + /* search for an existing archive. + * we should check ahead as the object + * can be destroyed in this transaction */ + if (mdd_hsm_archive_exists(env, mdd_cobj, ma)) + cl_flags |= CLF_UNLINK_HSM_EXISTS; } rc = mdd_unlink_sanity_check(env, mdd_pobj, pattr, mdd_cobj, cattr); @@ -1561,11 +1716,10 @@ static int mdd_unlink(const struct lu_env *env, struct md_object *pobj, GOTO(stop, rc); if (likely(mdd_cobj != NULL)) - mdd_write_lock(env, mdd_cobj, MOR_TGT_CHILD); + mdd_write_lock(env, mdd_cobj, DT_TGT_CHILD); if (likely(no_name == 0) && !OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DANGLING2)) { - rc = __mdd_index_delete(env, mdd_pobj, name, is_dir, handle, - mdd_object_capa(env, mdd_pobj)); + rc = __mdd_index_delete(env, mdd_pobj, name, is_dir, handle); if (rc) GOTO(cleanup, rc); } @@ -1580,8 +1734,7 @@ static int mdd_unlink(const struct lu_env *env, struct md_object *pobj, __mdd_index_insert_only(env, mdd_pobj, mdo2fid(mdd_cobj), mdd_object_type(mdd_cobj), - name, handle, - mdd_object_capa(env, mdd_pobj)); + name, handle); GOTO(cleanup, rc); } @@ -1590,7 +1743,7 @@ static int mdd_unlink(const struct lu_env *env, struct md_object *pobj, mdo_ref_del(env, mdd_cobj, handle); /* fetch updated nlink */ - rc = mdd_la_get(env, mdd_cobj, cattr, BYPASS_CAPA); + rc = mdd_la_get(env, mdd_cobj, cattr); if (rc) GOTO(cleanup, rc); } @@ -1620,30 +1773,33 @@ static int mdd_unlink(const struct lu_env *env, struct md_object *pobj, ma->ma_attr = *cattr; ma->ma_valid |= MA_INODE; rc = mdd_finish_unlink(env, mdd_cobj, ma, mdd_pobj, lname, handle); + if (rc != 0) + GOTO(cleanup, rc); /* fetch updated nlink */ - if (rc == 0) - rc = mdd_la_get(env, mdd_cobj, cattr, BYPASS_CAPA); + rc = mdd_la_get(env, mdd_cobj, cattr); + /* if object is removed then we can't get its attrs, + * use last get */ + if (rc == -ENOENT) { + cattr->la_nlink = 0; + rc = 0; + } - /* if object is removed then we can't get its attrs, use last get */ if (cattr->la_nlink == 0) { ma->ma_attr = *cattr; ma->ma_valid |= MA_INODE; } + EXIT; cleanup: if (likely(mdd_cobj != NULL)) mdd_write_unlock(env, mdd_cobj); if (rc == 0) { - int cl_flags = 0; - - if (cattr->la_nlink == 0) { + if (cattr->la_nlink == 0) cl_flags |= CLF_UNLINK_LAST; - /* search for an existing archive */ - if (mdd_hsm_archive_exists(env, mdd_cobj, ma)) - cl_flags |= CLF_UNLINK_HSM_EXISTS; - } + else + cl_flags &= ~CLF_UNLINK_HSM_EXISTS; rc = mdd_changelog_ns_store(env, mdd, is_dir ? CL_RMDIR : CL_UNLINK, cl_flags, @@ -1652,7 +1808,7 @@ cleanup: } stop: - mdd_trans_stop(env, mdd, rc, handle); + rc = mdd_trans_stop(env, mdd, rc, handle); return rc; } @@ -1672,9 +1828,11 @@ static int mdd_cd_sanity_check(const struct lu_env *env, RETURN(0); } -static int mdd_create_data(const struct lu_env *env, struct md_object *pobj, - struct md_object *cobj, const struct md_op_spec *spec, - struct md_attr *ma) +static int mdd_create_data(const struct lu_env *env, + struct md_object *pobj, + struct md_object *cobj, + const struct md_op_spec *spec, + struct md_attr *ma) { struct mdd_device *mdd = mdo2mdd(cobj); struct mdd_object *mdd_pobj = md2mdd_obj(pobj); @@ -1699,22 +1857,22 @@ static int mdd_create_data(const struct lu_env *env, struct md_object *pobj, * striping can be specified or not * 2) CMD? */ - rc = mdd_la_get(env, son, attr, BYPASS_CAPA); + rc = mdd_la_get(env, son, attr); if (rc) RETURN(rc); /* calling ->ah_make_hint() is used to transfer information from parent */ mdd_object_make_hint(env, mdd_pobj, son, attr, spec, hint); - handle = mdd_trans_create(env, mdd); - if (IS_ERR(handle)) - GOTO(out_free, rc = PTR_ERR(handle)); + handle = mdd_trans_create(env, mdd); + if (IS_ERR(handle)) + GOTO(out_free, rc = PTR_ERR(handle)); - /* - * XXX: Setting the lov ea is not locked but setting the attr is locked? - * Should this be fixed? - */ - CDEBUG(D_OTHER, "ea %p/%u, cr_flags "LPO64", no_create %u\n", + /* + * XXX: Setting the lov ea is not locked but setting the attr is locked? + * Should this be fixed? + */ + CDEBUG(D_OTHER, "ea %p/%u, cr_flags %#llo, no_create %u\n", spec->u.sp_ea.eadata, spec->u.sp_ea.eadatalen, spec->sp_cr_flags, spec->no_create); @@ -1730,7 +1888,8 @@ static int mdd_create_data(const struct lu_env *env, struct md_object *pobj, if (rc) GOTO(stop, rc); - rc = mdd_declare_changelog_store(env, mdd, NULL, NULL, handle); + rc = mdd_declare_changelog_store(env, mdd, CL_LAYOUT, NULL, NULL, + handle); if (rc) GOTO(stop, rc); @@ -1739,7 +1898,7 @@ static int mdd_create_data(const struct lu_env *env, struct md_object *pobj, GOTO(stop, rc); rc = dt_xattr_set(env, mdd_object_child(son), buf, XATTR_NAME_LOV, - 0, handle, mdd_object_capa(env, son)); + 0, handle); if (rc) GOTO(stop, rc); @@ -1747,7 +1906,8 @@ static int mdd_create_data(const struct lu_env *env, struct md_object *pobj, rc = mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, son, handle); stop: - mdd_trans_stop(env, mdd, rc, handle); + rc = mdd_trans_stop(env, mdd, rc, handle); + out_free: RETURN(rc); } @@ -1755,24 +1915,15 @@ out_free: static int mdd_declare_object_initialize(const struct lu_env *env, struct mdd_object *parent, struct mdd_object *child, - struct lu_attr *attr, + const struct lu_attr *attr, struct thandle *handle) { int rc; ENTRY; - /* - * inode mode has been set in creation time, and it's based on umask, - * la_mode and acl, don't set here again! (which will go wrong - * because below function doesn't consider umask). - * I'd suggest set all object attributes in creation time, see above. - */ LASSERT(attr->la_valid & (LA_MODE | LA_TYPE)); - attr->la_valid &= ~(LA_MODE | LA_TYPE); - rc = mdo_declare_attr_set(env, child, attr, handle); - attr->la_valid |= LA_MODE | LA_TYPE; - if (rc != 0 || !S_ISDIR(attr->la_mode)) - RETURN(rc); + if (!S_ISDIR(attr->la_mode)) + RETURN(0); rc = mdo_declare_index_insert(env, child, mdo2fid(child), S_IFDIR, dot, handle); @@ -1792,31 +1943,20 @@ static int mdd_declare_object_initialize(const struct lu_env *env, static int mdd_object_initialize(const struct lu_env *env, const struct lu_fid *pfid, struct mdd_object *child, - struct lu_attr *attr, struct thandle *handle, - const struct md_op_spec *spec) + struct lu_attr *attr, + struct thandle *handle) { - int rc; - ENTRY; - - /* - * Update attributes for child. - * - * FIXME: - * (1) the valid bits should be converted between Lustre and Linux; - * (2) maybe, the child attributes should be set in OSD when creation. - */ + int rc = 0; + ENTRY; - rc = mdd_attr_set_internal(env, child, attr, handle, 0); - /* arguments are supposed to stay the same */ if (S_ISDIR(attr->la_mode)) { /* Add "." and ".." for newly created dir */ mdo_ref_add(env, child, handle); rc = __mdd_index_insert_only(env, child, mdo2fid(child), - S_IFDIR, dot, handle, BYPASS_CAPA); + S_IFDIR, dot, handle); if (rc == 0) rc = __mdd_index_insert_only(env, child, pfid, S_IFDIR, - dotdot, handle, - BYPASS_CAPA); + dotdot, handle); if (rc != 0) mdo_ref_del(env, child, handle); } @@ -1856,9 +1996,9 @@ static int mdd_create_sanity_check(const struct lu_env *env, int rc; ENTRY; - /* EEXIST check */ - if (mdd_is_dead_obj(obj)) - RETURN(-ENOENT); + /* EEXIST check */ + if (mdd_is_dead_obj(obj)) + RETURN(-ENOENT); /* * In some cases this lookup is not needed - we know before if name @@ -1880,17 +2020,57 @@ static int mdd_create_sanity_check(const struct lu_env *env, check_perm = false; } + if (S_ISDIR(cattr->la_mode) && + unlikely(spec != NULL && spec->sp_cr_flags & MDS_OPEN_HAS_EA) && + spec->u.sp_ea.eadata != NULL && spec->u.sp_ea.eadatalen > 0) { + const struct lmv_user_md *lum = spec->u.sp_ea.eadata; + + if (!lmv_magic_supported(le32_to_cpu(lum->lum_magic)) && + le32_to_cpu(lum->lum_magic) != LMV_USER_MAGIC_V0) { + rc = -EINVAL; + CERROR("%s: invalid lmv_user_md: magic = %x, " + "stripe_offset = %d, stripe_count = %u: " + "rc = %d\n", mdd2obd_dev(m)->obd_name, + le32_to_cpu(lum->lum_magic), + (int)le32_to_cpu(lum->lum_stripe_offset), + le32_to_cpu(lum->lum_stripe_count), rc); + return rc; + } + } + rc = mdd_may_create(env, obj, pattr, NULL, check_perm); if (rc != 0) RETURN(rc); - /* sgid check */ + /* sgid check */ if (pattr->la_mode & S_ISGID) { + struct lu_ucred *uc = lu_ucred(env); + cattr->la_gid = pattr->la_gid; + + /* Directories are special, and always inherit S_ISGID */ if (S_ISDIR(cattr->la_mode)) { cattr->la_mode |= S_ISGID; cattr->la_valid |= LA_MODE; + } else if ((cattr->la_mode & (S_ISGID | S_IXGRP)) + == (S_ISGID | S_IXGRP) && + !lustre_in_group_p(uc, + (cattr->la_valid & LA_GID) ? + cattr->la_gid : pattr->la_gid) && + !md_capable(uc, CFS_CAP_FSETID)) { + cattr->la_mode &= ~S_ISGID; + cattr->la_valid |= LA_MODE; + } + } + + /* Inherit project ID from parent directory */ + if (pattr->la_flags & LUSTRE_PROJINHERIT_FL) { + cattr->la_projid = pattr->la_projid; + if (S_ISDIR(cattr->la_mode)) { + cattr->la_flags |= LUSTRE_PROJINHERIT_FL; + cattr->la_valid |= LA_FLAGS; } + cattr->la_valid |= LA_PROJID; } rc = mdd_name_check(m, lname); @@ -1898,14 +2078,14 @@ static int mdd_create_sanity_check(const struct lu_env *env, RETURN(rc); switch (cattr->la_mode & S_IFMT) { - case S_IFLNK: { - unsigned int symlen = strlen(spec->u.sp_symname) + 1; + case S_IFLNK: { + unsigned int symlen = strlen(spec->u.sp_symname) + 1; - if (symlen > (1 << m->mdd_dt_conf.ddp_block_shift)) - RETURN(-ENAMETOOLONG); - else - RETURN(0); - } + if (symlen > m->mdd_dt_conf.ddp_symlink_max) + RETURN(-ENAMETOOLONG); + else + RETURN(0); + } case S_IFDIR: case S_IFREG: case S_IFCHR: @@ -1921,7 +2101,7 @@ static int mdd_create_sanity_check(const struct lu_env *env, RETURN(rc); } -static int mdd_declare_object_create(const struct lu_env *env, +static int mdd_declare_create_object(const struct lu_env *env, struct mdd_device *mdd, struct mdd_object *p, struct mdd_object *c, struct lu_attr *attr, @@ -1929,17 +2109,19 @@ static int mdd_declare_object_create(const struct lu_env *env, const struct md_op_spec *spec, struct lu_buf *def_acl_buf, struct lu_buf *acl_buf, + struct lu_buf *hsm_buf, struct dt_allocation_hint *hint) { + const struct lu_buf *buf; int rc; - rc = mdd_declare_object_create_internal(env, p, c, attr, handle, spec, + rc = mdd_declare_create_object_internal(env, p, c, attr, handle, spec, hint); - if (rc) - GOTO(out, rc); + if (rc) + GOTO(out, rc); #ifdef CONFIG_FS_POSIX_ACL - if (def_acl_buf->lb_len > 0 && S_ISDIR(attr->la_mode)) { + if (def_acl_buf && def_acl_buf->lb_len > 0 && S_ISDIR(attr->la_mode)) { /* if dir, then can inherit default ACl */ rc = mdo_declare_xattr_set(env, c, def_acl_buf, XATTR_NAME_ACL_DEFAULT, @@ -1948,7 +2130,7 @@ static int mdd_declare_object_create(const struct lu_env *env, GOTO(out, rc); } - if (acl_buf->lb_len > 0) { + if (acl_buf && acl_buf->lb_len > 0) { rc = mdo_declare_attr_set(env, c, attr, handle); if (rc) GOTO(out, rc); @@ -1964,16 +2146,24 @@ static int mdd_declare_object_create(const struct lu_env *env, GOTO(out, rc); /* replay case, create LOV EA from client data */ - if (spec->no_create || + if ((!(spec->sp_cr_flags & MDS_OPEN_DELAY_CREATE) && spec->no_create) || (spec->sp_cr_flags & MDS_OPEN_HAS_EA && S_ISREG(attr->la_mode))) { - const struct lu_buf *buf; - buf = mdd_buf_get_const(env, spec->u.sp_ea.eadata, spec->u.sp_ea.eadatalen); - rc = mdo_declare_xattr_set(env, c, buf, XATTR_NAME_LOV, 0, - handle); + rc = mdo_declare_xattr_set(env, c, buf, + S_ISDIR(attr->la_mode) ? + XATTR_NAME_LMV : XATTR_NAME_LOV, + 0, handle); if (rc) GOTO(out, rc); + + if (spec->sp_cr_flags & MDS_OPEN_PCC) { + rc = mdo_declare_xattr_set(env, c, hsm_buf, + XATTR_NAME_HSM, + 0, handle); + if (rc) + GOTO(out, rc); + } } if (S_ISLNK(attr->la_mode)) { @@ -1987,6 +2177,16 @@ static int mdd_declare_object_create(const struct lu_env *env, if (rc) GOTO(out, rc); } + + if (spec->sp_cr_file_secctx_name != NULL) { + buf = mdd_buf_get_const(env, spec->sp_cr_file_secctx, + spec->sp_cr_file_secctx_size); + rc = mdo_declare_xattr_set(env, c, buf, + spec->sp_cr_file_secctx_name, 0, + handle); + if (rc < 0) + GOTO(out, rc); + } out: return rc; } @@ -2000,12 +2200,13 @@ static int mdd_declare_create(const struct lu_env *env, struct mdd_device *mdd, struct linkea_data *ldata, struct lu_buf *def_acl_buf, struct lu_buf *acl_buf, + struct lu_buf *hsm_buf, struct dt_allocation_hint *hint) { int rc; - rc = mdd_declare_object_create(env, mdd, p, c, attr, handle, spec, - def_acl_buf, acl_buf, hint); + rc = mdd_declare_create_object(env, mdd, p, c, attr, handle, spec, + def_acl_buf, acl_buf, hsm_buf, hint); if (rc) GOTO(out, rc); @@ -2016,11 +2217,12 @@ static int mdd_declare_create(const struct lu_env *env, struct mdd_device *mdd, } if (unlikely(spec->sp_cr_flags & MDS_OPEN_VOLATILE)) { - rc = orph_declare_index_insert(env, c, attr->la_mode, handle); + rc = mdd_orphan_declare_insert(env, c, attr->la_mode, handle); if (rc) GOTO(out, rc); } else { - struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix; + struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix; + enum changelog_rec_type type; rc = mdo_declare_index_insert(env, p, mdo2fid(c), attr->la_mode, name->ln_name, handle); @@ -2037,17 +2239,15 @@ static int mdd_declare_create(const struct lu_env *env, struct mdd_device *mdd, if (rc) return rc; - rc = mdd_declare_changelog_store(env, mdd, name, NULL, handle); + type = S_ISDIR(attr->la_mode) ? CL_MKDIR : + S_ISREG(attr->la_mode) ? CL_CREATE : + S_ISLNK(attr->la_mode) ? CL_SOFTLINK : CL_MKNOD; + + rc = mdd_declare_changelog_store(env, mdd, type, name, NULL, + handle); if (rc) return rc; } - - /* XXX: For remote create, it should indicate the remote RPC - * will be sent after local transaction is finished, which - * is not very nice, but it will be removed once we fully support - * async update */ - if (mdd_object_remote(p) && handle->th_update != NULL) - handle->th_update->tu_sent_after_local_trans = 1; out: return rc; } @@ -2065,9 +2265,9 @@ static int mdd_acl_init(const struct lu_env *env, struct mdd_object *pobj, RETURN(0); } - mdd_read_lock(env, pobj, MOR_TGT_PARENT); + mdd_read_lock(env, pobj, DT_TGT_PARENT); rc = mdo_xattr_get(env, pobj, def_acl_buf, - XATTR_NAME_ACL_DEFAULT, BYPASS_CAPA); + XATTR_NAME_ACL_DEFAULT); mdd_read_unlock(env, pobj); if (rc > 0) { /* If there are default ACL, fix mode/ACL by default ACL */ @@ -2097,17 +2297,19 @@ static int mdd_acl_init(const struct lu_env *env, struct mdd_object *pobj, /** * Create a metadata object and initialize it, set acl, xattr. **/ -static int mdd_object_create(const struct lu_env *env, struct mdd_object *pobj, +static int mdd_create_object(const struct lu_env *env, struct mdd_object *pobj, struct mdd_object *son, struct lu_attr *attr, struct md_op_spec *spec, struct lu_buf *acl_buf, struct lu_buf *def_acl_buf, + struct lu_buf *hsm_buf, struct dt_allocation_hint *hint, struct thandle *handle) { - int rc; + const struct lu_buf *buf; + int rc; - mdd_write_lock(env, son, MOR_TGT_CHILD); - rc = mdd_object_create_internal(env, NULL, son, attr, handle, spec, + mdd_write_lock(env, son, DT_TGT_CHILD); + rc = mdd_create_object_internal(env, NULL, son, attr, handle, spec, hint); if (rc) GOTO(unlock, rc); @@ -2116,8 +2318,7 @@ static int mdd_object_create(const struct lu_env *env, struct mdd_object *pobj, * created in declare phase, they also needs to be added to master * object as sub-directory entry. So it has to initialize the master * object, then set dir striped EA.(in mdo_xattr_set) */ - rc = mdd_object_initialize(env, mdo2fid(pobj), son, attr, handle, - spec); + rc = mdd_object_initialize(env, mdo2fid(pobj), son, attr, handle); if (rc != 0) GOTO(err_destroy, rc); @@ -2131,20 +2332,33 @@ static int mdd_object_create(const struct lu_env *env, struct mdd_object *pobj, /* During creation, there are only a few cases we need do xattr_set to * create stripes. * 1. regular file: see comments above. - * 2. create striped directory with provided stripeEA. - * 3. create striped directory because inherit default layout from the - * parent. */ + * 2. dir: inherit default striping or pool settings from parent. + * 3. create striped directory with provided stripeEA. + * 4. create striped directory because inherit default layout from the + * parent. + */ if (spec->no_create || (S_ISREG(attr->la_mode) && spec->sp_cr_flags & MDS_OPEN_HAS_EA) || S_ISDIR(attr->la_mode)) { - const struct lu_buf *buf; - buf = mdd_buf_get_const(env, spec->u.sp_ea.eadata, spec->u.sp_ea.eadatalen); rc = mdo_xattr_set(env, son, buf, S_ISDIR(attr->la_mode) ? XATTR_NAME_LMV : - XATTR_NAME_LOV, 0, - handle, BYPASS_CAPA); + XATTR_NAME_LOV, + 0, handle); + if (rc != 0) + GOTO(err_destroy, rc); + } + + if (S_ISREG(attr->la_mode) && spec->sp_cr_flags & MDS_OPEN_PCC) { + struct md_hsm mh; + + memset(&mh, 0, sizeof(mh)); + mh.mh_flags = HS_EXISTS | HS_ARCHIVED | HS_RELEASED; + mh.mh_arch_id = spec->sp_archive_id; + lustre_hsm2buf(hsm_buf->lb_buf, &mh); + rc = mdo_xattr_set(env, son, hsm_buf, XATTR_NAME_HSM, + 0, handle); if (rc != 0) GOTO(err_destroy, rc); } @@ -2155,7 +2369,7 @@ static int mdd_object_create(const struct lu_env *env, struct mdd_object *pobj, /* set default acl */ rc = mdo_xattr_set(env, son, def_acl_buf, XATTR_NAME_ACL_DEFAULT, 0, - handle, BYPASS_CAPA); + handle); if (rc) GOTO(err_destroy, rc); } @@ -2163,32 +2377,35 @@ static int mdd_object_create(const struct lu_env *env, struct mdd_object *pobj, if (acl_buf != NULL && acl_buf->lb_len > 0) { rc = mdo_xattr_set(env, son, acl_buf, XATTR_NAME_ACL_ACCESS, - 0, handle, BYPASS_CAPA); + 0, handle); if (rc) GOTO(err_destroy, rc); } #endif if (S_ISLNK(attr->la_mode)) { - struct lu_ucred *uc = lu_ucred_assert(env); struct dt_object *dt = mdd_object_child(son); const char *target_name = spec->u.sp_symname; int sym_len = strlen(target_name); - const struct lu_buf *buf; loff_t pos = 0; buf = mdd_buf_get_const(env, target_name, sym_len); - rc = dt->do_body_ops->dbo_write(env, dt, buf, &pos, handle, - mdd_object_capa(env, son), - uc->uc_cap & - CFS_CAP_SYS_RESOURCE_MASK); - + rc = dt->do_body_ops->dbo_write(env, dt, buf, &pos, handle); if (rc == sym_len) rc = 0; else GOTO(err_initlized, rc = -EFAULT); } + if (spec->sp_cr_file_secctx_name != NULL) { + buf = mdd_buf_get_const(env, spec->sp_cr_file_secctx, + spec->sp_cr_file_secctx_size); + rc = mdo_xattr_set(env, son, buf, spec->sp_cr_file_secctx_name, + 0, handle); + if (rc < 0) + GOTO(err_initlized, rc); + } + err_initlized: if (unlikely(rc != 0)) { int rc2; @@ -2210,12 +2427,93 @@ unlock: RETURN(rc); } -/* +static int mdd_index_delete(const struct lu_env *env, + struct mdd_object *mdd_pobj, + struct lu_attr *cattr, + const struct lu_name *lname) +{ + struct mdd_device *mdd = mdo2mdd(&mdd_pobj->mod_obj); + struct thandle *handle; + int rc; + ENTRY; + + handle = mdd_trans_create(env, mdd); + if (IS_ERR(handle)) + RETURN(PTR_ERR(handle)); + + rc = mdo_declare_index_delete(env, mdd_pobj, lname->ln_name, + handle); + if (rc != 0) + GOTO(stop, rc); + + if (S_ISDIR(cattr->la_mode)) { + rc = mdo_declare_ref_del(env, mdd_pobj, handle); + if (rc != 0) + GOTO(stop, rc); + } + + /* Since this will only be used in the error handler path, + * Let's set the thandle to be local and not mess the transno */ + handle->th_local = 1; + rc = mdd_trans_start(env, mdd, handle); + if (rc) + GOTO(stop, rc); + + rc = __mdd_index_delete(env, mdd_pobj, lname->ln_name, + S_ISDIR(cattr->la_mode), handle); + if (rc) + GOTO(stop, rc); +stop: + rc = mdd_trans_stop(env, mdd, rc, handle); + + RETURN(rc); +} + +/** * Create object and insert it into namespace. + * + * Two operations have to be performed: + * + * - an allocation of a new object (->do_create()), and + * - an insertion into a parent index (->dio_insert()). + * + * Due to locking, operation order is not important, when both are + * successful, *but* error handling cases are quite different: + * + * - if insertion is done first, and following object creation fails, + * insertion has to be rolled back, but this operation might fail + * also leaving us with dangling index entry. + * + * - if creation is done first, is has to be undone if insertion fails, + * leaving us with leaked space, which is not good but not fatal. + * + * It seems that creation-first is simplest solution, but it is sub-optimal + * in the frequent + * + * $ mkdir foo + * $ mkdir foo + * + * case, because second mkdir is bound to create object, only to + * destroy it immediately. + * + * To avoid this follow local file systems that do double lookup: + * + * 0. lookup -> -EEXIST (mdd_create_sanity_check()) + * 1. create (mdd_create_object_internal()) + * 2. insert (__mdd_index_insert(), lookup again) + * + * \param[in] pobj parent object + * \param[in] lname name of child being created + * \param[in,out] child child object being created + * \param[in] spec additional create parameters + * \param[in] ma attributes for new child object + * + * \retval 0 on success + * \retval negative errno on failure */ -static int mdd_create(const struct lu_env *env, struct md_object *pobj, +int mdd_create(const struct lu_env *env, struct md_object *pobj, const struct lu_name *lname, struct md_object *child, - struct md_op_spec *spec, struct md_attr* ma) + struct md_op_spec *spec, struct md_attr *ma) { struct mdd_thread_info *info = mdd_env_info(env); struct lu_attr *la = &info->mti_la_for_fix; @@ -2227,6 +2525,7 @@ static int mdd_create(const struct lu_env *env, struct md_object *pobj, struct lu_attr *pattr = &info->mti_pattr; struct lu_buf acl_buf; struct lu_buf def_acl_buf; + struct lu_buf hsm_buf; struct linkea_data *ldata = &info->mti_link_data; const char *name = lname->ln_name; struct dt_allocation_hint *hint = &mdd_env_info(env)->mti_hint; @@ -2234,43 +2533,7 @@ static int mdd_create(const struct lu_env *env, struct md_object *pobj, int rc2; ENTRY; - /* - * Two operations have to be performed: - * - * - an allocation of a new object (->do_create()), and - * - * - an insertion into a parent index (->dio_insert()). - * - * Due to locking, operation order is not important, when both are - * successful, *but* error handling cases are quite different: - * - * - if insertion is done first, and following object creation fails, - * insertion has to be rolled back, but this operation might fail - * also leaving us with dangling index entry. - * - * - if creation is done first, is has to be undone if insertion - * fails, leaving us with leaked space, which is neither good, nor - * fatal. - * - * It seems that creation-first is simplest solution, but it is - * sub-optimal in the frequent - * - * $ mkdir foo - * $ mkdir foo - * - * case, because second mkdir is bound to create object, only to - * destroy it immediately. - * - * To avoid this follow local file systems that do double lookup: - * - * 0. lookup -> -EEXIST (mdd_create_sanity_check()) - * - * 1. create (mdd_object_create_internal()) - * - * 2. insert (__mdd_index_insert(), lookup again) - */ - - rc = mdd_la_get(env, mdd_pobj, pattr, BYPASS_CAPA); + rc = mdd_la_get(env, mdd_pobj, pattr); if (rc != 0) RETURN(rc); @@ -2279,25 +2542,40 @@ static int mdd_create(const struct lu_env *env, struct md_object *pobj, if (rc) RETURN(rc); - if (OBD_FAIL_CHECK(OBD_FAIL_MDS_DQACQ_NET)) + if (OBD_FAIL_CHECK(OBD_FAIL_MDS_DQACQ_NET)) GOTO(out_free, rc = -EINPROGRESS); handle = mdd_trans_create(env, mdd); if (IS_ERR(handle)) GOTO(out_free, rc = PTR_ERR(handle)); - acl_buf.lb_buf = info->mti_xattr_buf; - acl_buf.lb_len = sizeof(info->mti_xattr_buf); + lu_buf_check_and_alloc(&info->mti_xattr_buf, + MIN(mdd->mdd_dt_conf.ddp_max_ea_size, XATTR_SIZE_MAX)); + acl_buf = info->mti_xattr_buf; def_acl_buf.lb_buf = info->mti_key; def_acl_buf.lb_len = sizeof(info->mti_key); rc = mdd_acl_init(env, mdd_pobj, attr, &def_acl_buf, &acl_buf); if (rc < 0) GOTO(out_stop, rc); + if (S_ISDIR(attr->la_mode)) { + struct lmv_user_md *lmu = spec->u.sp_ea.eadata; + + /* + * migrate may create 1-stripe directory, so lod_ah_init() + * doesn't adjust stripe count from lmu. + */ + if (lmu && lmu->lum_stripe_count == cpu_to_le32(1)) { + info->mti_lmu = *lmu; + info->mti_lmu.lum_stripe_count = 0; + spec->u.sp_ea.eadata = &info->mti_lmu; + } + } + mdd_object_make_hint(env, mdd_pobj, son, attr, spec, hint); memset(ldata, 0, sizeof(*ldata)); - if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_PARENT2)) { + if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_BAD_PARENT)) { struct lu_fid tfid = *mdd_object_fid(mdd_pobj); tfid.f_oid--; @@ -2309,29 +2587,38 @@ static int mdd_create(const struct lu_env *env, struct md_object *pobj, lname, 1, 0, ldata); } + if (spec->sp_cr_flags & MDS_OPEN_PCC) { + LASSERT(spec->sp_cr_flags & MDS_OPEN_HAS_EA); + + memset(&hsm_buf, 0, sizeof(hsm_buf)); + lu_buf_alloc(&hsm_buf, sizeof(struct hsm_attrs)); + if (hsm_buf.lb_buf == NULL) + GOTO(out_stop, rc = -ENOMEM); + } + rc = mdd_declare_create(env, mdd, mdd_pobj, son, lname, attr, handle, spec, ldata, &def_acl_buf, &acl_buf, - hint); - if (rc) - GOTO(out_stop, rc); + &hsm_buf, hint); + if (rc) + GOTO(out_stop, rc); - rc = mdd_trans_start(env, mdd, handle); - if (rc) - GOTO(out_stop, rc); + rc = mdd_trans_start(env, mdd, handle); + if (rc) + GOTO(out_stop, rc); - rc = mdd_object_create(env, mdd_pobj, son, attr, spec, &acl_buf, - &def_acl_buf, hint, handle); + rc = mdd_create_object(env, mdd_pobj, son, attr, spec, &acl_buf, + &def_acl_buf, &hsm_buf, hint, handle); if (rc != 0) GOTO(out_stop, rc); if (unlikely(spec->sp_cr_flags & MDS_OPEN_VOLATILE)) { - mdd_write_lock(env, son, MOR_TGT_CHILD); - rc = __mdd_orphan_add(env, son, handle); + mdd_write_lock(env, son, DT_TGT_CHILD); + son->mod_flags |= VOLATILE_OBJ; + rc = mdd_orphan_insert(env, son, handle); GOTO(out_volatile, rc); } else { rc = __mdd_index_insert(env, mdd_pobj, mdo2fid(son), - attr->la_mode, name, handle, - mdd_object_capa(env, mdd_pobj)); + attr->la_mode, name, handle); if (rc != 0) GOTO(err_created, rc); @@ -2349,19 +2636,17 @@ static int mdd_create(const struct lu_env *env, struct md_object *pobj, EXIT; err_insert: if (rc != 0) { - int rc2; - if (spec->sp_cr_flags & MDS_OPEN_VOLATILE) - rc2 = __mdd_orphan_del(env, son, handle); + rc2 = mdd_orphan_delete(env, son, handle); else rc2 = __mdd_index_delete(env, mdd_pobj, name, S_ISDIR(attr->la_mode), - handle, BYPASS_CAPA); + handle); if (rc2 != 0) goto out_stop; err_created: - mdd_write_lock(env, son, MOR_TGT_CHILD); + mdd_write_lock(env, son, DT_TGT_CHILD); if (S_ISDIR(attr->la_mode)) { /* Drop the reference, no need to delete "."/"..", * because the object is to be destroyed directly. */ @@ -2398,13 +2683,24 @@ out_volatile: NULL, handle); out_stop: rc2 = mdd_trans_stop(env, mdd, rc, handle); - if (rc == 0) + if (rc == 0) { + /* If creation fails, it is most likely due to the remote update + * failure, because local transaction will mostly succeed at + * this stage. There is no easy way to rollback all of previous + * updates, so let's remove the object from namespace, and + * LFSCK should handle the orphan object. */ + if (rc2 < 0 && !mdd_object_remote(mdd_pobj)) + mdd_index_delete(env, mdd_pobj, attr, lname); rc = rc2; + } out_free: - if (ldata->ld_buf && ldata->ld_buf->lb_len > OBD_ALLOC_BIG) + if (is_vmalloc_addr(ldata->ld_buf)) /* if we vmalloced a large buffer drop it */ lu_buf_free(ldata->ld_buf); + if (spec->sp_cr_flags & MDS_OPEN_PCC) + lu_buf_free(&hsm_buf); + /* The child object shouldn't be cached anymore */ if (rc) set_bit(LU_OBJECT_HEARD_BANSHEE, @@ -2441,8 +2737,8 @@ static int mdd_rename_order(const struct lu_env *env, } else if (lu_fid_eq(&mdd->mdd_root_fid, mdo2fid(tgt_pobj))) { rc = MDD_RN_TGTSRC; } else { - rc = mdd_is_parent(env, mdd, src_pobj, pattr, mdo2fid(tgt_pobj), - NULL); + rc = mdd_is_parent(env, mdd, src_pobj, pattr, + mdo2fid(tgt_pobj)); if (rc == -EREMOTE) rc = 0; @@ -2474,6 +2770,17 @@ static int mdd_rename_sanity_check(const struct lu_env *env, * before mdd_rename and enable MDS_PERM_BYPASS. */ LASSERT(sobj); + /* + * If we are using project inheritance, we only allow renames + * into our tree when the project IDs are the same; otherwise + * tree quota mechanism would be circumvented. + */ + if (((tpattr->la_flags & LUSTRE_PROJINHERIT_FL) && + tpattr->la_projid != cattr->la_projid) || + ((pattr->la_flags & LUSTRE_PROJINHERIT_FL) && + (pattr->la_projid != tpattr->la_projid))) + RETURN(-EXDEV); + rc = mdd_may_delete(env, src_pobj, pattr, sobj, cattr, NULL, 1, 0); if (rc) RETURN(rc); @@ -2502,8 +2809,8 @@ static int mdd_declare_rename(const struct lu_env *env, struct mdd_object *mdd_tpobj, struct mdd_object *mdd_sobj, struct mdd_object *mdd_tobj, - const struct lu_name *tname, const struct lu_name *sname, + const struct lu_name *tname, struct md_attr *ma, struct linkea_data *ldata, struct thandle *handle) @@ -2575,15 +2882,13 @@ static int mdd_declare_rename(const struct lu_env *env, if (rc != 0) return rc; - /* name from target dir (old name), we declare it unconditionally - * as mdd_rename() calls delete unconditionally as well. so just - * to balance declarations vs calls to change ... */ - rc = mdo_declare_index_delete(env, mdd_tpobj, tname->ln_name, handle); - if (rc) - return rc; - if (mdd_tobj && mdd_object_exists(mdd_tobj)) { /* delete target child in target parent directory */ + rc = mdo_declare_index_delete(env, mdd_tpobj, tname->ln_name, + handle); + if (rc) + return rc; + rc = mdo_declare_ref_del(env, mdd_tobj, handle); if (rc) return rc; @@ -2611,7 +2916,8 @@ static int mdd_declare_rename(const struct lu_env *env, return rc; } - rc = mdd_declare_changelog_store(env, mdd, tname, sname, handle); + rc = mdd_declare_changelog_store(env, mdd, CL_RENAME, tname, sname, + handle); if (rc) return rc; @@ -2648,26 +2954,36 @@ static int mdd_rename(const struct lu_env *env, int rc, rc2; ENTRY; + /* let unlink to complete and commit */ + CFS_FAIL_TIMEOUT(OBD_FAIL_TGT_REPLY_DATA_RACE, 2 + cfs_fail_val); + if (tobj) mdd_tobj = md2mdd_obj(tobj); mdd_sobj = mdd_object_find(env, mdd, lf); + if (IS_ERR(mdd_sobj)) + RETURN(PTR_ERR(mdd_sobj)); - rc = mdd_la_get(env, mdd_sobj, cattr, BYPASS_CAPA); + rc = mdd_la_get(env, mdd_sobj, cattr); if (rc) GOTO(out_pending, rc); - rc = mdd_la_get(env, mdd_spobj, pattr, BYPASS_CAPA); + rc = mdd_la_get(env, mdd_spobj, pattr); if (rc) GOTO(out_pending, rc); if (mdd_tobj) { - rc = mdd_la_get(env, mdd_tobj, tattr, BYPASS_CAPA); + rc = mdd_la_get(env, mdd_tobj, tattr); if (rc) GOTO(out_pending, rc); + /* search for an existing archive. + * we should check ahead as the object + * can be destroyed in this transaction */ + if (mdd_hsm_archive_exists(env, mdd_tobj, ma)) + cl_flags |= CLF_RENAME_LAST_EXISTS; } - rc = mdd_la_get(env, mdd_tpobj, tpattr, BYPASS_CAPA); + rc = mdd_la_get(env, mdd_tpobj, tpattr); if (rc) GOTO(out_pending, rc); @@ -2680,13 +2996,22 @@ static int mdd_rename(const struct lu_env *env, if (rc < 0) GOTO(out_pending, rc); + /* FIXME: Should consider tobj and sobj too in rename_lock. */ + rc = mdd_rename_order(env, mdd, mdd_spobj, pattr, mdd_tpobj); + if (rc < 0) + GOTO(out_pending, rc); + handle = mdd_trans_create(env, mdd); if (IS_ERR(handle)) GOTO(out_pending, rc = PTR_ERR(handle)); memset(ldata, 0, sizeof(*ldata)); - mdd_linkea_prepare(env, mdd_sobj, NULL, NULL, mdd_object_fid(mdd_tpobj), - ltname, 1, 0, ldata); + rc = mdd_linkea_prepare(env, mdd_sobj, mdd_object_fid(mdd_spobj), + lsname, mdd_object_fid(mdd_tpobj), ltname, + 1, 0, ldata); + if (rc) + GOTO(stop, rc); + rc = mdd_declare_rename(env, mdd, mdd_spobj, mdd_tpobj, mdd_sobj, mdd_tobj, lsname, ltname, ma, ldata, handle); if (rc) @@ -2696,64 +3021,60 @@ static int mdd_rename(const struct lu_env *env, if (rc) GOTO(stop, rc); - /* FIXME: Should consider tobj and sobj too in rename_lock. */ - rc = mdd_rename_order(env, mdd, mdd_spobj, pattr, mdd_tpobj); - if (rc < 0) - GOTO(cleanup_unlocked, rc); - is_dir = S_ISDIR(cattr->la_mode); - /* Remove source name from source directory */ - rc = __mdd_index_delete(env, mdd_spobj, sname, is_dir, handle, - mdd_object_capa(env, mdd_spobj)); - if (rc) - GOTO(cleanup, rc); + /* Remove source name from source directory */ + rc = __mdd_index_delete(env, mdd_spobj, sname, is_dir, handle); + if (rc != 0) + GOTO(stop, rc); - /* "mv dir1 dir2" needs "dir1/.." link update */ - if (is_dir && mdd_sobj && !lu_fid_eq(spobj_fid, tpobj_fid)) { - rc = __mdd_index_delete_only(env, mdd_sobj, dotdot, handle, - mdd_object_capa(env, mdd_sobj)); + /* "mv dir1 dir2" needs "dir1/.." link update */ + if (is_dir && !lu_fid_eq(spobj_fid, tpobj_fid)) { + rc = __mdd_index_delete_only(env, mdd_sobj, dotdot, handle); if (rc != 0) GOTO(fixup_spobj2, rc); rc = __mdd_index_insert_only(env, mdd_sobj, tpobj_fid, S_IFDIR, - dotdot, handle, - mdd_object_capa(env, mdd_sobj)); + dotdot, handle); if (rc != 0) GOTO(fixup_spobj, rc); } - /* Remove target name from target directory - * Here tobj can be remote one, so we do index_delete unconditionally - * and -ENOENT is allowed. - */ - rc = __mdd_index_delete(env, mdd_tpobj, tname, is_dir, handle, - mdd_object_capa(env, mdd_tpobj)); - if (rc != 0) { - if (mdd_tobj) { - /* tname might been renamed to something else */ - GOTO(fixup_spobj, rc); - } - if (rc != -ENOENT) - GOTO(fixup_spobj, rc); - } + if (mdd_tobj != NULL && mdd_object_exists(mdd_tobj)) { + rc = __mdd_index_delete(env, mdd_tpobj, tname, is_dir, handle); + if (rc != 0) + /* tname might been renamed to something else */ + GOTO(fixup_spobj, rc); + } /* Insert new fid with target name into target dir */ rc = __mdd_index_insert(env, mdd_tpobj, lf, cattr->la_mode, - tname, handle, mdd_object_capa(env, mdd_tpobj)); + tname, handle); if (rc != 0) GOTO(fixup_tpobj, rc); LASSERT(ma->ma_attr.la_valid & LA_CTIME); la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime; - /* XXX: mdd_sobj must be local one if it is NOT NULL. */ - if (mdd_sobj) { - la->la_valid = LA_CTIME; - rc = mdd_update_time(env, mdd_sobj, cattr, la, handle); - if (rc) - GOTO(fixup_tpobj, rc); - } + /* XXX: mdd_sobj must be local one if it is NOT NULL. */ + la->la_valid = LA_CTIME; + rc = mdd_update_time(env, mdd_sobj, cattr, la, handle); + if (rc) + GOTO(fixup_tpobj, rc); + + /* Update the linkEA for the source object */ + mdd_write_lock(env, mdd_sobj, DT_SRC_CHILD); + rc = mdd_links_rename(env, mdd_sobj, mdo2fid(mdd_spobj), lsname, + mdo2fid(mdd_tpobj), ltname, handle, ldata, + 0, 0); + if (rc == -ENOENT) + /* Old files might not have EA entry */ + mdd_links_add(env, mdd_sobj, mdo2fid(mdd_spobj), + lsname, handle, NULL, 0); + mdd_write_unlock(env, mdd_sobj); + /* We don't fail the transaction if the link ea can't be + updated -- fid2path will use alternate lookup method. */ + rc = 0; /* Remove old target object * For tobj is remote case cmm layer has processed @@ -2761,7 +3082,7 @@ static int mdd_rename(const struct lu_env *env, * it must be local one. */ if (tobj && mdd_object_exists(mdd_tobj)) { - mdd_write_lock(env, mdd_tobj, MOR_TGT_CHILD); + mdd_write_lock(env, mdd_tobj, DT_TGT_CHILD); tobj_locked = 1; if (mdd_is_dead_obj(mdd_tobj)) { /* shld not be dead, something is wrong */ @@ -2777,7 +3098,7 @@ static int mdd_rename(const struct lu_env *env, tobj_ref = 1; /* fetch updated nlink */ - rc = mdd_la_get(env, mdd_tobj, tattr, BYPASS_CAPA); + rc = mdd_la_get(env, mdd_tobj, tattr); if (rc != 0) { CERROR("%s: Failed to get nlink for tobj " DFID": rc = %d\n", @@ -2810,8 +3131,13 @@ static int mdd_rename(const struct lu_env *env, } /* fetch updated nlink */ - rc = mdd_la_get(env, mdd_tobj, tattr, BYPASS_CAPA); - if (rc != 0) { + rc = mdd_la_get(env, mdd_tobj, tattr); + if (rc == -ENOENT) { + /* the object got removed, let's + * return the latest known attributes */ + tattr->la_nlink = 0; + rc = 0; + } else if (rc != 0) { CERROR("%s: Failed to get nlink for tobj " DFID": rc = %d\n", mdd2obd_dev(mdd)->obd_name, @@ -2822,11 +3148,10 @@ static int mdd_rename(const struct lu_env *env, ma->ma_attr = *tattr; ma->ma_valid |= MA_INODE; - if (tattr->la_nlink == 0) { + if (tattr->la_nlink == 0) cl_flags |= CLF_RENAME_LAST; - if (mdd_hsm_archive_exists(env, mdd_tobj, ma)) - cl_flags |= CLF_RENAME_LAST_EXISTS; - } + else + cl_flags &= ~CLF_RENAME_LAST_EXISTS; } la->la_valid = LA_CTIME | LA_MTIME; @@ -2837,29 +3162,15 @@ static int mdd_rename(const struct lu_env *env, if (mdd_spobj != mdd_tpobj) { la->la_valid = LA_CTIME | LA_MTIME; rc = mdd_update_time(env, mdd_tpobj, tpattr, la, handle); + if (rc != 0) + GOTO(fixup_tpobj, rc); } - if (rc == 0 && mdd_sobj) { - mdd_write_lock(env, mdd_sobj, MOR_SRC_CHILD); - rc = mdd_links_rename(env, mdd_sobj, mdo2fid(mdd_spobj), lsname, - mdo2fid(mdd_tpobj), ltname, handle, NULL, - 0, 0); - if (rc == -ENOENT) - /* Old files might not have EA entry */ - mdd_links_add(env, mdd_sobj, mdo2fid(mdd_spobj), - lsname, handle, NULL, 0); - mdd_write_unlock(env, mdd_sobj); - /* We don't fail the transaction if the link ea can't be - updated -- fid2path will use alternate lookup method. */ - rc = 0; - } - EXIT; fixup_tpobj: if (rc) { - rc2 = __mdd_index_delete(env, mdd_tpobj, tname, is_dir, handle, - BYPASS_CAPA); + rc2 = __mdd_index_delete(env, mdd_tpobj, tname, is_dir, handle); if (rc2) CWARN("tp obj fix error %d\n",rc2); @@ -2874,7 +3185,7 @@ fixup_tpobj: rc2 = __mdd_index_insert(env, mdd_tpobj, mdo2fid(mdd_tobj), mdd_object_type(mdd_tobj), - tname, handle, BYPASS_CAPA); + tname, handle); if (rc2 != 0) CWARN("tp obj fix error: rc = %d\n", rc2); } @@ -2882,16 +3193,14 @@ fixup_tpobj: fixup_spobj: if (rc && is_dir && mdd_sobj && mdd_spobj != mdd_tpobj) { - rc2 = __mdd_index_delete_only(env, mdd_sobj, dotdot, handle, - BYPASS_CAPA); - + rc2 = __mdd_index_delete_only(env, mdd_sobj, dotdot, handle); if (rc2) CWARN("%s: sp obj dotdot delete error: rc = %d\n", mdd2obd_dev(mdd)->obd_name, rc2); rc2 = __mdd_index_insert_only(env, mdd_sobj, spobj_fid, S_IFDIR, - dotdot, handle, BYPASS_CAPA); + dotdot, handle); if (rc2 != 0) CWARN("%s: sp obj dotdot insert error: rc = %d\n", mdd2obd_dev(mdd)->obd_name, rc2); @@ -2901,7 +3210,7 @@ fixup_spobj2: if (rc != 0) { rc2 = __mdd_index_insert(env, mdd_spobj, lf, mdd_object_type(mdd_sobj), sname, - handle, BYPASS_CAPA); + handle); if (rc2 != 0) CWARN("sp obj fix error: rc = %d\n", rc2); } @@ -2910,14 +3219,13 @@ cleanup: if (tobj_locked) mdd_write_unlock(env, mdd_tobj); -cleanup_unlocked: if (rc == 0) rc = mdd_changelog_ns_store(env, mdd, CL_RENAME, cl_flags, mdd_tobj, tpobj_fid, lf, spobj_fid, ltname, lsname, handle); stop: - mdd_trans_stop(env, mdd, rc, handle); + rc = mdd_trans_stop(env, mdd, rc, handle); out_pending: mdd_object_put(env, mdd_sobj); @@ -2925,1137 +3233,1724 @@ out_pending: } /** - * During migration once the parent FID has been changed, - * we need update the parent FID in linkea. + * Check whether we should migrate the file/dir + * return val + * < 0 permission check failed or other error. + * = 0 the file can be migrated. **/ -static int mdd_linkea_update_child_internal(const struct lu_env *env, - struct mdd_object *parent, - struct mdd_object *child, - const char *name, int namelen, - struct thandle *handle, - bool declare) +static int mdd_migrate_sanity_check(const struct lu_env *env, + struct mdd_device *mdd, + struct mdd_object *spobj, + struct mdd_object *tpobj, + struct mdd_object *sobj, + struct mdd_object *tobj, + const struct lu_attr *spattr, + const struct lu_attr *tpattr, + const struct lu_attr *attr) { - struct mdd_thread_info *info = mdd_env_info(env); - struct linkea_data ldata = {0}; - struct lu_buf *buf = &info->mti_link_buf; - int count; - int rc = 0; + int rc; ENTRY; - buf = lu_buf_check_and_alloc(buf, PATH_MAX); - if (buf->lb_buf == NULL) - RETURN(-ENOMEM); - - ldata.ld_buf = buf; - rc = mdd_links_read(env, child, &ldata); - if (rc != 0) { - if (rc == -ENOENT || rc == -ENODATA) - rc = 0; - RETURN(rc); + if (!mdd_object_remote(sobj)) { + mdd_read_lock(env, sobj, DT_SRC_CHILD); + if (sobj->mod_count > 0) { + CDEBUG(D_INFO, "%s: "DFID" is opened, count %d\n", + mdd2obd_dev(mdd)->obd_name, PFID(mdo2fid(sobj)), + sobj->mod_count); + mdd_read_unlock(env, sobj); + RETURN(-EBUSY); + } + mdd_read_unlock(env, sobj); } - LASSERT(ldata.ld_leh != NULL); - ldata.ld_lee = (struct link_ea_entry *)(ldata.ld_leh + 1); - for (count = 0; count < ldata.ld_leh->leh_reccount; count++) { - struct mdd_device *mdd = mdo2mdd(&child->mod_obj); - struct lu_name lname; - struct lu_fid fid; - - linkea_entry_unpack(ldata.ld_lee, &ldata.ld_reclen, - &lname, &fid); - - if (strncmp(lname.ln_name, name, namelen) != 0 || - lu_fid_eq(&fid, mdd_object_fid(parent))) { - ldata.ld_lee = (struct link_ea_entry *) - ((char *)ldata.ld_lee + - ldata.ld_reclen); - continue; - } + if (mdd_object_exists(tobj)) + RETURN(-EEXIST); - CDEBUG(D_INFO, "%s: update "DFID" with %.*s:"DFID"\n", - mdd2obd_dev(mdd)->obd_name, PFID(mdd_object_fid(child)), - lname.ln_namelen, lname.ln_name, - PFID(mdd_object_fid(parent))); - /* update to the new parent fid */ - linkea_entry_pack(ldata.ld_lee, &lname, - mdd_object_fid(parent)); - if (declare) - rc = mdd_declare_links_add(env, child, handle, &ldata); - else - rc = mdd_links_write(env, child, &ldata, handle); - break; - } + rc = mdd_rename_sanity_check(env, spobj, spattr, tpobj, tpattr, sobj, + attr, NULL, NULL); RETURN(rc); } -static int mdd_linkea_declare_update_child(const struct lu_env *env, - struct mdd_object *parent, - struct mdd_object *child, - const char *name, int namelen, - struct thandle *handle) +typedef int (*mdd_dir_stripe_cb)(const struct lu_env *env, + struct mdd_object *obj, + struct mdd_object *stripe, + const struct lu_buf *lmv_buf, + const struct lu_buf *lmu_buf, + int index, + struct thandle *handle); + +static int mdd_dir_declare_delete_stripe(const struct lu_env *env, + struct mdd_object *obj, + struct mdd_object *stripe, + const struct lu_buf *lmv_buf, + const struct lu_buf *lmu_buf, + int index, + struct thandle *handle) { - return mdd_linkea_update_child_internal(env, parent, child, name, - namelen, handle, true); + struct mdd_thread_info *info = mdd_env_info(env); + char *stripe_name = info->mti_name; + struct lmv_user_md *lmu = lmu_buf->lb_buf; + int rc; + + if (index < le32_to_cpu(lmu->lum_stripe_count)) + return 0; + + rc = mdo_declare_index_delete(env, stripe, dotdot, handle); + if (rc) + return rc; + + snprintf(stripe_name, sizeof(info->mti_name), DFID":%d", + PFID(mdd_object_fid(stripe)), index); + + rc = mdo_declare_index_delete(env, obj, stripe_name, handle); + if (rc) + return rc; + + rc = mdo_declare_ref_del(env, obj, handle); + + return rc; } -static int mdd_linkea_update_child(const struct lu_env *env, - struct mdd_object *parent, - struct mdd_object *child, - const char *name, int namelen, - struct thandle *handle) +/* delete stripe from its master object namespace */ +static int mdd_dir_delete_stripe(const struct lu_env *env, + struct mdd_object *obj, + struct mdd_object *stripe, + const struct lu_buf *lmv_buf, + const struct lu_buf *lmu_buf, + int index, + struct thandle *handle) { - return mdd_linkea_update_child_internal(env, parent, child, name, - namelen, handle, false); + struct mdd_thread_info *info = mdd_env_info(env); + char *stripe_name = info->mti_name; + struct lmv_mds_md_v1 *lmv = lmv_buf->lb_buf; + struct lmv_user_md *lmu = lmu_buf->lb_buf; + __u32 del_offset = le32_to_cpu(lmu->lum_stripe_count); + int rc; + + ENTRY; + + /* local dir will delete via LOD */ + LASSERT(mdd_object_remote(obj)); + LASSERT(del_offset < le32_to_cpu(lmv->lmv_stripe_count)); + + if (index < del_offset) + RETURN(0); + + mdd_write_lock(env, stripe, DT_SRC_CHILD); + rc = __mdd_index_delete_only(env, stripe, dotdot, handle); + if (rc) + GOTO(out, rc); + + snprintf(stripe_name, sizeof(info->mti_name), DFID":%d", + PFID(mdd_object_fid(stripe)), index); + + rc = __mdd_index_delete_only(env, obj, stripe_name, handle); + if (rc) + GOTO(out, rc); + + rc = mdo_ref_del(env, obj, handle); + GOTO(out, rc); +out: + mdd_write_unlock(env, stripe); + + return rc; } -static int mdd_update_linkea_internal(const struct lu_env *env, - struct mdd_object *mdd_pobj, - struct mdd_object *mdd_sobj, - struct mdd_object *mdd_tobj, - const struct lu_name *child_name, - struct thandle *handle, - int declare) +static int mdd_dir_declare_destroy_stripe(const struct lu_env *env, + struct mdd_object *obj, + struct mdd_object *stripe, + const struct lu_buf *lmv_buf, + const struct lu_buf *lmu_buf, + int index, + struct thandle *handle) { - struct mdd_thread_info *info = mdd_env_info(env); - struct linkea_data *ldata = &info->mti_link_data; - int count; - int rc = 0; - ENTRY; + struct lmv_user_md *lmu = lmu_buf->lb_buf; + __u32 shrink_offset = le32_to_cpu(lmu->lum_stripe_count); + int rc; - rc = mdd_links_read(env, mdd_sobj, ldata); - if (rc != 0) { - if (rc == -ENOENT || rc == -ENODATA) - rc = 0; - RETURN(rc); + if (index < shrink_offset) { + if (shrink_offset < 2) + return 0; + return mdo_declare_xattr_set(env, stripe, lmv_buf, + XATTR_NAME_LMV".set", 0, handle); } - if (declare) - rc = mdd_declare_links_add(env, mdd_tobj, handle, ldata); - else - rc = mdd_links_write(env, mdd_tobj, ldata, handle); + rc = mdo_declare_ref_del(env, stripe, handle); + if (rc) + return rc; - if (rc != 0) + rc = mdo_declare_destroy(env, stripe, handle); + + return rc; +} + +static int mdd_dir_destroy_stripe(const struct lu_env *env, + struct mdd_object *obj, + struct mdd_object *stripe, + const struct lu_buf *lmv_buf, + const struct lu_buf *lmu_buf, + int index, + struct thandle *handle) +{ + struct mdd_thread_info *info = mdd_env_info(env); + struct lmv_mds_md_v1 *lmv = lmv_buf->lb_buf; + struct lmv_user_md *lmu = lmu_buf->lb_buf; + __u32 shrink_offset = le32_to_cpu(lmu->lum_stripe_count); + int rc; + + ENTRY; + + /* update remaining stripes' LMV */ + if (index < shrink_offset) { + struct lmv_mds_md_v1 *slave_lmv; + struct lu_buf slave_buf = { + .lb_buf = &info->mti_lmv.lmv_md_v1, + .lb_len = sizeof(*slave_lmv) + }; + __u32 version = le32_to_cpu(lmv->lmv_layout_version); + + /* if dir will be shrunk to 1-stripe, don't update */ + if (shrink_offset < 2) + RETURN(0); + + slave_lmv = slave_buf.lb_buf; + memset(slave_lmv, 0, sizeof(*slave_lmv)); + slave_lmv->lmv_magic = cpu_to_le32(LMV_MAGIC_STRIPE); + slave_lmv->lmv_stripe_count = lmu->lum_stripe_count; + slave_lmv->lmv_master_mdt_index = cpu_to_le32(index); + slave_lmv->lmv_hash_type = lmv->lmv_hash_type & + cpu_to_le32(LMV_HASH_TYPE_MASK); + slave_lmv->lmv_layout_version = cpu_to_le32(++version); + + rc = mdo_xattr_set(env, stripe, &slave_buf, + XATTR_NAME_LMV".set", 0, handle); RETURN(rc); + } - /* If it is mulitple links file, we need update the name entry for - * all parent */ - LASSERT(ldata->ld_leh != NULL); - ldata->ld_lee = (struct link_ea_entry *)(ldata->ld_leh + 1); - for (count = 0; count < ldata->ld_leh->leh_reccount; count++) { - struct mdd_device *mdd = mdo2mdd(&mdd_sobj->mod_obj); - struct mdd_object *pobj; - struct lu_name lname; - struct lu_fid fid; - - linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, - &lname, &fid); - ldata->ld_lee = (struct link_ea_entry *)((char *)ldata->ld_lee + - ldata->ld_reclen); - pobj = mdd_object_find(env, mdd, &fid); - if (IS_ERR(pobj)) { - CWARN("%s: cannot find obj "DFID": rc = %ld\n", - mdd2obd_dev(mdd)->obd_name, PFID(&fid), - PTR_ERR(pobj)); - continue; - } + mdd_write_lock(env, stripe, DT_SRC_CHILD); + rc = mdo_ref_del(env, stripe, handle); + if (!rc) + rc = mdo_destroy(env, stripe, handle); + mdd_write_unlock(env, stripe); - if (!mdd_object_exists(pobj)) { - CDEBUG(D_INFO, "%s: obj "DFID" does not exist\n", - mdd2obd_dev(mdd)->obd_name, PFID(&fid)); - GOTO(next_put, rc); - } + RETURN(rc); +} - if (pobj == mdd_pobj && - lname.ln_namelen == child_name->ln_namelen && - strncmp(lname.ln_name, child_name->ln_name, - lname.ln_namelen) == 0) { - CDEBUG(D_INFO, "%s: skip its own %s: "DFID"\n", - mdd2obd_dev(mdd)->obd_name, child_name->ln_name, - PFID(&fid)); - GOTO(next_put, rc); - } +static int mdd_shrink_stripe_is_empty(const struct lu_env *env, + struct mdd_object *obj, + struct mdd_object *stripe, + const struct lu_buf *lmv_buf, + const struct lu_buf *lmu_buf, + int index, + struct thandle *handle) +{ + struct lmv_user_md *lmu = lmu_buf->lb_buf; + __u32 shrink_offset = le32_to_cpu(lmu->lum_stripe_count); - CDEBUG(D_INFO, "%s: update "DFID" with "DNAME":"DFID"\n", - mdd2obd_dev(mdd)->obd_name, PFID(mdd_object_fid(pobj)), - PNAME(&lname), PFID(mdd_object_fid(mdd_tobj))); + /* the default value is 0, but it means 1 */ + if (!shrink_offset) + shrink_offset = 1; - if (declare) { - /* Remove source name from source directory */ - /* Insert new fid with target name into target dir */ - rc = mdo_declare_index_delete(env, pobj, lname.ln_name, - handle); - if (rc != 0) - GOTO(next_put, rc); + if (index < shrink_offset) + return 0; - rc = mdo_declare_index_insert(env, pobj, - mdd_object_fid(mdd_tobj), - mdd_object_type(mdd_tobj), - lname.ln_name, handle); - if (rc != 0) - GOTO(next_put, rc); + return mdd_dir_is_empty(env, stripe); +} - rc = mdo_declare_ref_add(env, mdd_tobj, handle); - if (rc) - GOTO(next_put, rc); +/* + * iterate stripes of striped directory on remote MDT, local striped directory + * is accessed via LOD. + */ +static int mdd_dir_iterate_stripes(const struct lu_env *env, + struct mdd_object *obj, + const struct lu_buf *lmv_buf, + const struct lu_buf *lmu_buf, + struct thandle *handle, + mdd_dir_stripe_cb cb) +{ + struct mdd_device *mdd = mdo2mdd(&obj->mod_obj); + struct lu_fid *fid = &mdd_env_info(env)->mti_fid2; + struct lmv_mds_md_v1 *lmv = lmv_buf->lb_buf; + struct mdd_object *stripe; + int i; + int rc; - rc = mdo_declare_ref_del(env, mdd_sobj, handle); - if (rc) - GOTO(next_put, rc); - } else { - rc = __mdd_index_delete(env, pobj, lname.ln_name, - 0, handle, - mdd_object_capa(env, pobj)); - if (rc) - GOTO(next_put, rc); + ENTRY; - rc = __mdd_index_insert(env, pobj, - mdd_object_fid(mdd_tobj), - mdd_object_type(mdd_tobj), - lname.ln_name, handle, - mdd_object_capa(env, pobj)); - if (rc != 0) - GOTO(next_put, rc); + LASSERT(lmv); - mdd_write_lock(env, mdd_tobj, MOR_SRC_CHILD); - rc = mdo_ref_add(env, mdd_tobj, handle); - mdd_write_unlock(env, mdd_tobj); - if (rc) - GOTO(next_put, rc); + for (i = 0; i < le32_to_cpu(lmv->lmv_stripe_count); i++) { + fid_le_to_cpu(fid, &lmv->lmv_stripe_fids[i]); + if (!fid_is_sane(fid)) + continue; - mdd_write_lock(env, mdd_sobj, MOR_TGT_CHILD); - mdo_ref_del(env, mdd_sobj, handle); - mdd_write_unlock(env, mdd_sobj); - } -next_put: - mdd_object_put(env, pobj); - if (rc != 0) - break; + stripe = mdd_object_find(env, mdd, fid); + if (IS_ERR(stripe)) + RETURN(PTR_ERR(stripe)); + + rc = cb(env, obj, stripe, lmv_buf, lmu_buf, i, handle); + mdd_object_put(env, stripe); + if (rc) + RETURN(rc); } - RETURN(rc); + RETURN(0); } -static int mdd_migrate_xattrs(const struct lu_env *env, - struct mdd_object *mdd_sobj, - struct mdd_object *mdd_tobj) +typedef int (*mdd_xattr_cb)(const struct lu_env *env, + struct mdd_object *obj, + const struct lu_buf *buf, + const char *name, + int fl, struct thandle *handle); + +/* iterate xattrs, but ignore LMA, LMV, and LINKEA if 'skip_linkea' is set. */ +static int mdd_iterate_xattrs(const struct lu_env *env, + struct mdd_object *sobj, + struct mdd_object *tobj, + bool skip_linkea, + struct thandle *handle, + mdd_xattr_cb cb) { - struct mdd_thread_info *info = mdd_env_info(env); - struct mdd_device *mdd = mdo2mdd(&mdd_sobj->mod_obj); - char *xname; - struct thandle *handle; - struct lu_buf xbuf; - int xlen; - int rem; - int xsize; - int list_xsize; - struct lu_buf list_xbuf; - int rc; + struct mdd_thread_info *info = mdd_env_info(env); + char *xname; + struct lu_buf list_xbuf; + struct lu_buf xbuf = { NULL }; + int list_xsize; + int xlen; + int rem; + int xsize; + int rc; + + ENTRY; /* retrieve xattr list from the old object */ - list_xsize = mdo_xattr_list(env, mdd_sobj, &LU_BUF_NULL, - mdd_object_capa(env, mdd_sobj)); + list_xsize = mdo_xattr_list(env, sobj, &LU_BUF_NULL); if (list_xsize == -ENODATA) - return 0; + RETURN(0); if (list_xsize < 0) - return list_xsize; + RETURN(list_xsize); lu_buf_check_and_alloc(&info->mti_big_buf, list_xsize); if (info->mti_big_buf.lb_buf == NULL) - return -ENOMEM; + RETURN(-ENOMEM); list_xbuf.lb_buf = info->mti_big_buf.lb_buf; list_xbuf.lb_len = list_xsize; - rc = mdo_xattr_list(env, mdd_sobj, &list_xbuf, - mdd_object_capa(env, mdd_sobj)); + rc = mdo_xattr_list(env, sobj, &list_xbuf); if (rc < 0) - return rc; + RETURN(rc); + + rem = rc; rc = 0; - rem = list_xsize; xname = list_xbuf.lb_buf; while (rem > 0) { xlen = strnlen(xname, rem - 1) + 1; - if (strcmp(XATTR_NAME_LINK, xname) == 0 || - strcmp(XATTR_NAME_LMA, xname) == 0 || + if (strcmp(XATTR_NAME_LMA, xname) == 0 || strcmp(XATTR_NAME_LMV, xname) == 0) goto next; - /* For directory, if there are default layout, migrate here */ - if (strcmp(XATTR_NAME_LOV, xname) == 0 && - !S_ISDIR(lu_object_attr(&mdd_sobj->mod_obj.mo_lu))) + if (skip_linkea && + strcmp(XATTR_NAME_LINK, xname) == 0) goto next; - xsize = mdo_xattr_get(env, mdd_sobj, &LU_BUF_NULL, - xname, - mdd_object_capa(env, mdd_sobj)); + xsize = mdo_xattr_get(env, sobj, &LU_BUF_NULL, xname); if (xsize == -ENODATA) goto next; if (xsize < 0) - GOTO(out, rc); + GOTO(out, rc = xsize); - lu_buf_check_and_alloc(&info->mti_link_buf, xsize); - if (info->mti_link_buf.lb_buf == NULL) + lu_buf_check_and_alloc(&xbuf, xsize); + if (xbuf.lb_buf == NULL) GOTO(out, rc = -ENOMEM); - xbuf.lb_len = xsize; - xbuf.lb_buf = info->mti_link_buf.lb_buf; - rc = mdo_xattr_get(env, mdd_sobj, &xbuf, xname, - mdd_object_capa(env, mdd_sobj)); + rc = mdo_xattr_get(env, sobj, &xbuf, xname); if (rc == -ENODATA) goto next; if (rc < 0) GOTO(out, rc); - handle = mdd_trans_create(env, mdd); - if (IS_ERR(handle)) - GOTO(out, rc = PTR_ERR(handle)); - - rc = mdo_declare_xattr_set(env, mdd_tobj, &xbuf, xname, 0, - handle); - if (rc != 0) - GOTO(stop_trans, rc); - /* Note: this transaction is part of migration, and it is not - * the last step of migration, so we set th_local = 1 to avoid - * update last rcvd for this transaction */ - handle->th_local = 1; - rc = mdd_trans_start(env, mdd, handle); - if (rc != 0) - GOTO(stop_trans, rc); - - rc = mdo_xattr_set(env, mdd_tobj, &xbuf, xname, 0, handle, - mdd_object_capa(env, mdd_sobj)); - if (rc == -EEXIST) - GOTO(stop_trans, rc = 0); +repeat: + rc = cb(env, tobj, &xbuf, xname, 0, handle); + if (unlikely(rc == -ENOSPC && + strcmp(xname, XATTR_NAME_LINK) == 0)) { + rc = linkea_overflow_shrink( + (struct linkea_data *)(xbuf.lb_buf)); + if (likely(rc > 0)) { + xbuf.lb_len = rc; + goto repeat; + } + } - if (rc != 0) - GOTO(stop_trans, rc); -stop_trans: - mdd_trans_stop(env, mdd, rc, handle); - if (rc != 0) + if (rc) GOTO(out, rc); next: + xname += xlen; rem -= xlen; - memmove(xname, xname + xlen, rem); } + out: - return rc; + lu_buf_free(&xbuf); + RETURN(rc); } -static int mdd_declare_migrate_create(const struct lu_env *env, - struct mdd_object *mdd_pobj, - struct mdd_object *mdd_sobj, - struct mdd_object *mdd_tobj, - struct md_op_spec *spec, - struct lu_attr *la, - union lmv_mds_md *mgr_ea, - struct thandle *handle) +typedef int (*mdd_linkea_cb)(const struct lu_env *env, + struct mdd_object *sobj, + struct mdd_object *tobj, + const struct lu_name *sname, + const struct lu_fid *sfid, + const struct lu_name *lname, + const struct lu_fid *fid, + void *opaque, + struct thandle *handle); + +static int mdd_declare_update_link(const struct lu_env *env, + struct mdd_object *sobj, + struct mdd_object *tobj, + const struct lu_name *tname, + const struct lu_fid *tpfid, + const struct lu_name *lname, + const struct lu_fid *fid, + void *unused, + struct thandle *handle) { - struct lu_attr *la_flag = MDD_ENV_VAR(env, la_for_fix); - const struct lu_buf *buf; - int rc; - int mgr_easize; - - rc = mdd_declare_object_create_internal(env, mdd_pobj, mdd_tobj, la, - handle, spec, NULL); - if (rc != 0) - return rc; - - rc = mdd_declare_object_initialize(env, mdd_pobj, mdd_tobj, la, - handle); - if (rc != 0) - return rc; + struct mdd_device *mdd = mdo2mdd(&sobj->mod_obj); + struct mdd_object *pobj; + int rc; - if (S_ISLNK(la->la_mode)) { - const char *target_name = spec->u.sp_symname; - int sym_len = strlen(target_name); - const struct lu_buf *buf; + /* ignore tobj */ + if (lu_fid_eq(tpfid, fid) && tname->ln_namelen == lname->ln_namelen && + !strcmp(tname->ln_name, lname->ln_name)) + return 0; - buf = mdd_buf_get_const(env, target_name, sym_len); - rc = dt_declare_record_write(env, mdd_object_child(mdd_tobj), - buf, 0, handle); - if (rc != 0) - return rc; - } + pobj = mdd_object_find(env, mdd, fid); + if (IS_ERR(pobj)) + return PTR_ERR(pobj); - if (spec->u.sp_ea.eadata != NULL && spec->u.sp_ea.eadatalen != 0) { - buf = mdd_buf_get_const(env, spec->u.sp_ea.eadata, - spec->u.sp_ea.eadatalen); - rc = mdo_declare_xattr_set(env, mdd_tobj, buf, XATTR_NAME_LOV, - 0, handle); - if (rc) - return rc; - } - mgr_easize = lmv_mds_md_size(2, LMV_MAGIC_V1); - buf = mdd_buf_get_const(env, mgr_ea, mgr_easize); - rc = mdo_declare_xattr_set(env, mdd_sobj, buf, XATTR_NAME_LMV, - 0, handle); + rc = mdo_declare_index_delete(env, pobj, lname->ln_name, handle); + if (!rc) + rc = mdo_declare_index_insert(env, pobj, mdo2fid(tobj), + mdd_object_type(sobj), + lname->ln_name, handle); + mdd_object_put(env, pobj); if (rc) return rc; - la_flag->la_valid = LA_FLAGS; - la_flag->la_flags = la->la_flags | LUSTRE_IMMUTABLE_FL; - mdd_flags_xlate(mdd_sobj, la_flag->la_flags); - rc = mdo_declare_attr_set(env, mdd_sobj, la_flag, handle); + rc = mdo_declare_ref_add(env, tobj, handle); + if (rc) + return rc; + rc = mdo_declare_ref_del(env, sobj, handle); return rc; } -static int mdd_migrate_create(const struct lu_env *env, - struct mdd_object *mdd_pobj, - struct mdd_object *mdd_sobj, - struct mdd_object *mdd_tobj, - struct lu_attr *la) +static int mdd_update_link(const struct lu_env *env, + struct mdd_object *sobj, + struct mdd_object *tobj, + const struct lu_name *tname, + const struct lu_fid *tpfid, + const struct lu_name *lname, + const struct lu_fid *fid, + void *unused, + struct thandle *handle) { - struct mdd_thread_info *info = mdd_env_info(env); - struct mdd_device *mdd = mdo2mdd(&mdd_sobj->mod_obj); - struct md_op_spec *spec = &info->mti_spec; - struct lu_buf lmm_buf = { 0 }; - struct lu_buf link_buf = { 0 }; - const struct lu_buf *buf; - struct thandle *handle; - struct lmv_mds_md_v1 *mgr_ea; - struct lu_attr *la_flag = MDD_ENV_VAR(env, la_for_fix); - struct dt_allocation_hint *hint = &mdd_env_info(env)->mti_hint; - int mgr_easize; - int rc; + struct mdd_device *mdd = mdo2mdd(&sobj->mod_obj); + struct mdd_object *pobj; + int rc; + ENTRY; - /* prepare spec for create */ - memset(spec, 0, sizeof(*spec)); - spec->sp_cr_lookup = 0; - spec->sp_feat = &dt_directory_features; - if (S_ISLNK(la->la_mode)) { - buf = lu_buf_check_and_alloc( - &mdd_env_info(env)->mti_big_buf, - la->la_size + 1); - link_buf = *buf; - link_buf.lb_len = la->la_size + 1; - rc = mdd_readlink(env, &mdd_sobj->mod_obj, &link_buf); - if (rc <= 0) { - rc = rc != 0 ? rc : -EFAULT; - CERROR("%s: "DFID" readlink failed: rc = %d\n", - mdd2obd_dev(mdd)->obd_name, - PFID(mdd_object_fid(mdd_sobj)), rc); - RETURN(rc); - } - spec->u.sp_symname = link_buf.lb_buf; - } else if S_ISREG(la->la_mode) { - /* retrieve lov of the old object */ - rc = mdd_get_lov_ea(env, mdd_sobj, &lmm_buf); - if (rc != 0 && rc != -ENODATA) - RETURN(rc); - if (lmm_buf.lb_buf != NULL && lmm_buf.lb_len != 0) { - spec->u.sp_ea.eadata = lmm_buf.lb_buf; - spec->u.sp_ea.eadatalen = lmm_buf.lb_len; - spec->sp_cr_flags |= MDS_OPEN_HAS_EA; - } - } + LASSERT(lu_name_is_valid(lname)); - mgr_ea = (struct lmv_mds_md_v1 *)info->mti_xattr_buf; - memset(mgr_ea, 0, sizeof(*mgr_ea)); - mgr_ea->lmv_magic = cpu_to_le32(LMV_MAGIC_V1); - mgr_ea->lmv_stripe_count = cpu_to_le32(2); - mgr_ea->lmv_master_mdt_index = mdd_seq_site(mdd)->ss_node_id; - mgr_ea->lmv_hash_type = cpu_to_le32(LMV_HASH_FLAG_MIGRATION); - fid_cpu_to_le(&mgr_ea->lmv_stripe_fids[0], mdd_object_fid(mdd_sobj)); - fid_cpu_to_le(&mgr_ea->lmv_stripe_fids[1], mdd_object_fid(mdd_tobj)); + /* ignore tobj */ + if (lu_fid_eq(tpfid, fid) && tname->ln_namelen == lname->ln_namelen && + !strncmp(tname->ln_name, lname->ln_name, lname->ln_namelen)) + RETURN(0); - mdd_object_make_hint(env, mdd_pobj, mdd_tobj, la, spec, hint); + CDEBUG(D_INFO, "update "DFID"/"DNAME":"DFID"\n", + PFID(fid), PNAME(lname), PFID(mdo2fid(tobj))); - handle = mdd_trans_create(env, mdd); - if (IS_ERR(handle)) - GOTO(out_free, rc = PTR_ERR(handle)); + pobj = mdd_object_find(env, mdd, fid); + if (IS_ERR(pobj)) { + CWARN("%s: cannot find obj "DFID": %ld\n", + mdd2obd_dev(mdd)->obd_name, PFID(fid), PTR_ERR(pobj)); + RETURN(PTR_ERR(pobj)); + } - /* Note: this transaction is part of migration, and it is not - * the last step of migration, so we set th_local = 1 to avoid - * update last rcvd for this transaction */ - handle->th_local = 1; - rc = mdd_declare_migrate_create(env, mdd_pobj, mdd_sobj, mdd_tobj, - spec, la, - (union lmv_mds_md *)info->mti_xattr_buf, - handle); - if (rc != 0) - GOTO(stop_trans, rc); + if (!mdd_object_exists(pobj)) { + CDEBUG(D_INFO, DFID" doesn't exist\n", PFID(fid)); + mdd_object_put(env, pobj); + RETURN(-ENOENT); + } - rc = mdd_trans_start(env, mdd, handle); - if (rc != 0) - GOTO(stop_trans, rc); + mdd_write_lock(env, pobj, DT_TGT_PARENT); + rc = __mdd_index_delete_only(env, pobj, lname->ln_name, handle); + if (!rc) + rc = __mdd_index_insert_only(env, pobj, mdo2fid(tobj), + mdd_object_type(sobj), + lname->ln_name, handle); + mdd_write_unlock(env, pobj); + mdd_object_put(env, pobj); + if (rc) + RETURN(rc); - /* create the target object */ - rc = mdd_object_create(env, mdd_pobj, mdd_tobj, la, spec, NULL, NULL, - hint, handle); - if (rc != 0) - GOTO(stop_trans, rc); + mdd_write_lock(env, tobj, DT_TGT_CHILD); + rc = mdo_ref_add(env, tobj, handle); + mdd_write_unlock(env, tobj); + if (rc) + RETURN(rc); - /* Set MIGRATE EA on the source inode, so once the migration needs - * to be re-done during failover, the re-do process can locate the - * target object which is already being created. */ - mgr_easize = lmv_mds_md_size(2, LMV_MAGIC_V1); - buf = mdd_buf_get_const(env, mgr_ea, mgr_easize); - rc = mdo_xattr_set(env, mdd_sobj, buf, XATTR_NAME_LMV, 0, - handle, mdd_object_capa(env, mdd_sobj)); - if (rc != 0) - GOTO(stop_trans, rc); + mdd_write_lock(env, sobj, DT_SRC_CHILD); + rc = mdo_ref_del(env, sobj, handle); + mdd_write_unlock(env, sobj); - /* Set immutable flag, so any modification is disabled until - * the migration is done. Once the migration is interrupted, - * if the resume process find the migrating object has both - * IMMUTALBE flag and MIGRATE EA, it need to clear IMMUTABLE - * flag and approve the migration */ - la_flag->la_valid = LA_FLAGS; - la_flag->la_flags = la->la_flags | LUSTRE_IMMUTABLE_FL; - mdd_flags_xlate(mdd_sobj, la_flag->la_flags); - rc = mdo_attr_set(env, mdd_sobj, la_flag, handle, - mdd_object_capa(env, mdd_sobj)); -stop_trans: - if (handle != NULL) - mdd_trans_stop(env, mdd, rc, handle); -out_free: - if (lmm_buf.lb_buf != NULL) - OBD_FREE(lmm_buf.lb_buf, lmm_buf.lb_len); RETURN(rc); } -static int mdd_migrate_entries(const struct lu_env *env, - struct mdd_object *mdd_sobj, - struct mdd_object *mdd_tobj) +static inline int mdd_fld_lookup(const struct lu_env *env, + struct mdd_device *mdd, + const struct lu_fid *fid, + __u32 *mdt_index) { - struct dt_object *next = mdd_object_child(mdd_sobj); - struct mdd_device *mdd = mdo2mdd(&mdd_sobj->mod_obj); - struct dt_object *dt_tobj = mdd_object_child(mdd_tobj); - struct thandle *handle; - struct dt_it *it; - const struct dt_it_ops *iops; - int rc; - int result; - struct lu_dirent *ent; - ENTRY; + struct lu_seq_range *range = &mdd_env_info(env)->mti_range; + struct seq_server_site *ss; + int rc; - OBD_ALLOC(ent, NAME_MAX + sizeof(*ent) + 1); - if (ent == NULL) - RETURN(-ENOMEM); + ss = mdd->mdd_md_dev.md_lu_dev.ld_site->ld_seq_site; - if (!dt_try_as_dir(env, next)) - GOTO(out_ent, rc = -ENOTDIR); - /* - * iterate directories - */ - iops = &next->do_index_ops->dio_it; - it = iops->init(env, next, LUDA_FID | LUDA_TYPE, - mdd_object_capa(env, mdd_sobj)); - if (IS_ERR(it)) - GOTO(out_ent, rc = PTR_ERR(it)); + range->lsr_flags = LU_SEQ_RANGE_MDT; + rc = fld_server_lookup(env, ss->ss_server_fld, fid->f_seq, range); + if (rc) + return rc; - rc = iops->load(env, it, 0); - if (rc == 0) - rc = iops->next(env, it); - else if (rc > 0) - rc = 0; - /* - * At this point and across for-loop: - * - * rc == 0 -> ok, proceed. - * rc > 0 -> end of directory. - * rc < 0 -> error. - */ - do { - struct mdd_object *child; - char *name = mdd_env_info(env)->mti_key; - int len; - int recsize; - int is_dir; - bool target_exist = false; - - len = iops->key_size(env, it); - if (len == 0) - goto next; + *mdt_index = range->lsr_index; - result = iops->rec(env, it, (struct dt_rec *)ent, - LUDA_FID | LUDA_TYPE); - if (result == -ESTALE) - goto next; - if (result != 0) { - rc = result; - goto out; - } + return 0; +} - fid_le_to_cpu(&ent->lde_fid, &ent->lde_fid); - recsize = le16_to_cpu(ent->lde_reclen); +static int mdd_is_link_on_source_mdt(const struct lu_env *env, + struct mdd_object *sobj, + struct mdd_object *tobj, + const struct lu_name *tname, + const struct lu_fid *tpfid, + const struct lu_name *lname, + const struct lu_fid *fid, + void *opaque, + struct thandle *handle) +{ + struct mdd_device *mdd = mdo2mdd(&sobj->mod_obj); + __u32 source_mdt_index = *(__u32 *)opaque; + __u32 link_mdt_index; + int rc; - /* Insert new fid with target name into target dir */ - if ((ent->lde_namelen == 1 && ent->lde_name[0] == '.') || - (ent->lde_namelen == 2 && ent->lde_name[0] == '.' && - ent->lde_name[1] == '.')) - goto next; + ENTRY; - child = mdd_object_find(env, mdd, &ent->lde_fid); - if (IS_ERR(child)) - GOTO(out, rc = PTR_ERR(child)); + /* ignore tobj */ + if (lu_fid_eq(tpfid, fid) && tname->ln_namelen == lname->ln_namelen && + !strcmp(tname->ln_name, lname->ln_name)) + return 0; - is_dir = S_ISDIR(mdd_object_type(child)); + rc = mdd_fld_lookup(env, mdd, fid, &link_mdt_index); + if (rc) + RETURN(rc); - snprintf(name, ent->lde_namelen + 1, "%s", ent->lde_name); + RETURN(link_mdt_index == source_mdt_index); +} - /* Check whether the name has been inserted to the target */ - if (dt_try_as_dir(env, dt_tobj)) { - struct lu_fid *fid = &mdd_env_info(env)->mti_fid2; +static int mdd_iterate_linkea(const struct lu_env *env, + struct mdd_object *sobj, + struct mdd_object *tobj, + const struct lu_name *tname, + const struct lu_fid *tpfid, + struct linkea_data *ldata, + void *opaque, + struct thandle *handle, + mdd_linkea_cb cb) +{ + struct mdd_thread_info *info = mdd_env_info(env); + char *filename = info->mti_name; + struct lu_name lname; + struct lu_fid fid; + int rc = 0; - rc = dt_lookup(env, dt_tobj, (struct dt_rec *)fid, - (struct dt_key *)name, - mdd_object_capa(env, mdd_tobj)); - if (unlikely(rc == 0)) - target_exist = true; - } + if (!ldata->ld_buf) + return 0; - handle = mdd_trans_create(env, mdd); - if (IS_ERR(handle)) - GOTO(out, rc = PTR_ERR(handle)); - - /* Note: this transaction is part of migration, and it is not - * the last step of migration, so we set th_local = 1 to avoid - * updating last rcvd for this transaction */ - handle->th_local = 1; - if (likely(!target_exist)) { - rc = mdo_declare_index_insert(env, mdd_tobj, - &ent->lde_fid, - mdd_object_type(child), - name, handle); - if (rc != 0) - GOTO(out_put, rc); + for (linkea_first_entry(ldata); ldata->ld_lee && !rc; + linkea_next_entry(ldata)) { + linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, &lname, + &fid); - if (is_dir) { - rc = mdo_declare_ref_add(env, mdd_tobj, handle); - if (rc != 0) - GOTO(out_put, rc); - } - } + /* Note: lname might miss \0 at the end */ + snprintf(filename, sizeof(info->mti_name), "%.*s", + lname.ln_namelen, lname.ln_name); + lname.ln_name = filename; - rc = mdo_declare_index_delete(env, mdd_sobj, name, handle); - if (rc != 0) - GOTO(out_put, rc); + CDEBUG(D_INFO, DFID"/"DNAME"\n", PFID(&fid), PNAME(&lname)); - if (is_dir) { - rc = mdo_declare_ref_del(env, mdd_sobj, handle); - if (rc != 0) - GOTO(out_put, rc); + rc = cb(env, sobj, tobj, tname, tpfid, &lname, &fid, opaque, + handle); + } - /* Update .. for child */ - rc = mdo_declare_index_delete(env, child, dotdot, - handle); - if (rc != 0) - GOTO(out_put, rc); + return rc; +} - rc = mdo_declare_index_insert(env, child, - mdd_object_fid(mdd_tobj), - S_IFDIR, dotdot, handle); - if (rc != 0) - GOTO(out_put, rc); +/** + * Prepare linkea, and check whether file needs migrate: if source still has + * link on source MDT, no need to migrate, just update namespace on source and + * target parents. + * + * \retval 0 do migrate + * \retval 1 don't migrate + * \retval -errno on failure + */ +static int migrate_linkea_prepare(const struct lu_env *env, + struct mdd_device *mdd, + struct mdd_object *spobj, + struct mdd_object *tpobj, + struct mdd_object *sobj, + const struct lu_name *lname, + const struct lu_attr *attr, + struct linkea_data *ldata) +{ + __u32 source_mdt_index; + int rc; + + ENTRY; + + memset(ldata, 0, sizeof(*ldata)); + rc = mdd_linkea_prepare(env, sobj, mdo2fid(spobj), lname, + mdo2fid(tpobj), lname, 1, 0, ldata); + if (rc) + RETURN(rc); + + /* + * Then it will check if the file should be migrated. If the file has + * mulitple links, we only need migrate the file if all of its entries + * has been migrated to the remote MDT. + */ + if (S_ISDIR(attr->la_mode) || attr->la_nlink < 2) + RETURN(0); + + /* If there are still links locally, don't migrate this file */ + LASSERT(ldata->ld_leh != NULL); + + /* + * If linkEA is overflow, it means there are some unknown name entries + * under unknown parents, which will prevent the migration. + */ + if (unlikely(ldata->ld_leh->leh_overflow_time)) + RETURN(-EOVERFLOW); + + rc = mdd_fld_lookup(env, mdd, mdo2fid(sobj), &source_mdt_index); + if (rc) + RETURN(rc); + + rc = mdd_iterate_linkea(env, sobj, NULL, lname, mdo2fid(tpobj), ldata, + &source_mdt_index, NULL, + mdd_is_link_on_source_mdt); + RETURN(rc); +} + +static int mdd_dir_declare_layout_delete(const struct lu_env *env, + struct mdd_object *obj, + const struct lu_buf *lmv_buf, + const struct lu_buf *lmu_buf, + struct thandle *handle) +{ + int rc; + + if (!lmv_buf->lb_buf) + rc = mdo_declare_index_delete(env, obj, dotdot, handle); + else if (mdd_object_remote(obj)) + rc = mdd_dir_iterate_stripes(env, obj, lmv_buf, lmu_buf, handle, + mdd_dir_declare_delete_stripe); + else + rc = mdo_declare_xattr_set(env, obj, lmu_buf, + XATTR_NAME_LMV".del", 0, handle); + + return rc; +} + +static int mdd_dir_layout_delete(const struct lu_env *env, + struct mdd_object *obj, + const struct lu_buf *lmv_buf, + const struct lu_buf *lmu_buf, + struct thandle *handle) +{ + int rc; + + ENTRY; + + mdd_write_lock(env, obj, DT_SRC_PARENT); + if (!lmv_buf->lb_buf) + /* normal dir */ + rc = __mdd_index_delete_only(env, obj, dotdot, handle); + else if (mdd_object_remote(obj)) + /* striped, but remote */ + rc = mdd_dir_iterate_stripes(env, obj, lmv_buf, lmu_buf, handle, + mdd_dir_delete_stripe); + else + rc = mdo_xattr_set(env, obj, lmu_buf, XATTR_NAME_LMV".del", 0, + handle); + mdd_write_unlock(env, obj); + + RETURN(rc); +} + +static int mdd_declare_migrate_create(const struct lu_env *env, + struct mdd_object *tpobj, + struct mdd_object *sobj, + struct mdd_object *tobj, + const struct lu_name *lname, + struct lu_attr *attr, + struct lu_buf *sbuf, + struct linkea_data *ldata, + struct md_op_spec *spec, + struct dt_allocation_hint *hint, + struct thandle *handle) +{ + struct mdd_thread_info *info = mdd_env_info(env); + struct lmv_mds_md_v1 *lmv = sbuf->lb_buf; + int rc; + + if (S_ISDIR(attr->la_mode)) { + struct lu_buf lmu_buf = { NULL }; + + if (lmv) { + struct lmv_user_md *lmu = &info->mti_lmv.lmv_user_md; + + lmu->lum_stripe_count = 0; + lmu_buf.lb_buf = lmu; + lmu_buf.lb_len = sizeof(*lmu); } - rc = mdd_linkea_declare_update_child(env, mdd_tobj, - child, name, - strlen(name), - handle); - if (rc != 0) - GOTO(out_put, rc); + rc = mdd_dir_declare_layout_delete(env, sobj, sbuf, &lmu_buf, + handle); + if (rc) + return rc; + + if (lmv) { + rc = mdo_declare_xattr_del(env, sobj, XATTR_NAME_LMV, + handle); + if (rc) + return rc; + } + } + + rc = mdd_declare_create(env, mdo2mdd(&tpobj->mod_obj), tpobj, tobj, + lname, attr, handle, spec, ldata, NULL, NULL, + NULL, hint); + if (rc) + return rc; + + if (S_ISDIR(attr->la_mode) && mdd_dir_is_empty(env, sobj) != 0) { + if (!lmv) { + /* + * if sobj is not striped, fake a 1-stripe LMV, which + * will be used to generate a compound LMV for tobj. + */ + LASSERT(sizeof(info->mti_key) > + lmv_mds_md_size(1, LMV_MAGIC_V1)); + lmv = (typeof(lmv))info->mti_key; + memset(lmv, 0, sizeof(*lmv)); + lmv->lmv_magic = cpu_to_le32(LMV_MAGIC_V1); + lmv->lmv_stripe_count = cpu_to_le32(1); + fid_le_to_cpu(&lmv->lmv_stripe_fids[0], mdo2fid(sobj)); + sbuf->lb_buf = lmv; + sbuf->lb_len = lmv_mds_md_size(1, LMV_MAGIC_V1); + + rc = mdo_declare_xattr_set(env, tobj, sbuf, + XATTR_NAME_LMV".add", 0, + handle); + sbuf->lb_buf = NULL; + sbuf->lb_len = 0; + } else { + rc = mdo_declare_xattr_set(env, tobj, sbuf, + XATTR_NAME_LMV".add", 0, + handle); + } + if (rc) + return rc; + } + + /* + * tobj mode will be used in lod_declare_xattr_set(), but it's not + * createb yet, copy from sobj. + */ + tobj->mod_obj.mo_lu.lo_header->loh_attr &= ~S_IFMT; + tobj->mod_obj.mo_lu.lo_header->loh_attr |= + sobj->mod_obj.mo_lu.lo_header->loh_attr & S_IFMT; + + rc = mdd_iterate_xattrs(env, sobj, tobj, true, handle, + mdo_declare_xattr_set); + if (rc) + return rc; + + if (S_ISREG(attr->la_mode)) { + struct lu_buf fid_buf; + + handle->th_complex = 1; + + /* target may be remote, update PFID via sobj. */ + fid_buf.lb_buf = (void *)mdo2fid(tobj); + fid_buf.lb_len = sizeof(struct lu_fid); + rc = mdo_declare_xattr_set(env, sobj, &fid_buf, XATTR_NAME_FID, + 0, handle); + if (rc) + return rc; + + rc = mdo_declare_xattr_del(env, sobj, XATTR_NAME_LOV, handle); + if (rc) + return rc; + } + + if (!S_ISDIR(attr->la_mode)) { + rc = mdd_iterate_linkea(env, sobj, tobj, lname, mdo2fid(tpobj), + ldata, NULL, handle, + mdd_declare_update_link); + if (rc) + return rc; + + if (lmv) { + rc = mdo_declare_xattr_del(env, sobj, XATTR_NAME_LMV, + handle); + if (rc) + return rc; + } + } + + return rc; +} + +/** + * Create target, migrate xattrs and update links. + * + * Create target according to \a spec, and then migrate xattrs, if it's + * directory, migrate source stripes to target, else update fid to target + * for links. + * + * \param[in] env execution environment + * \param[in] tpobj target parent object + * \param[in] sobj source object + * \param[in] tobj target object + * \param[in] lname file name + * \param[in] attr source attributes + * \param[in] sbuf source LMV buf + * \param[in] ldata source linkea + * \param[in] spec migrate create spec + * \param[in] hint target creation hint + * \param[in] handle tranasction handle + * + * \retval 0 on success + * \retval -errno on failure + **/ +static int mdd_migrate_create(const struct lu_env *env, + struct mdd_object *tpobj, + struct mdd_object *sobj, + struct mdd_object *tobj, + const struct lu_name *lname, + struct lu_attr *attr, + const struct lu_buf *sbuf, + struct linkea_data *ldata, + struct md_op_spec *spec, + struct dt_allocation_hint *hint, + struct thandle *handle) +{ + int rc; + + ENTRY; + + /* + * directory will migrate sobj stripes to tobj: + * 1. delete stripes from sobj. + * 2. add stripes to tobj, see lod_dir_declare_layout_add(). + * 3. create/attach stripes for tobj, see lod_xattr_set_lmv(). + */ + if (S_ISDIR(attr->la_mode)) { + struct lu_buf lmu_buf = { NULL }; + + if (sbuf->lb_buf) { + struct mdd_thread_info *info = mdd_env_info(env); + struct lmv_user_md *lmu = &info->mti_lmv.lmv_user_md; + + lmu->lum_stripe_count = 0; + lmu_buf.lb_buf = lmu; + lmu_buf.lb_len = sizeof(*lmu); + } + + rc = mdd_dir_layout_delete(env, sobj, sbuf, &lmu_buf, handle); + if (rc) + RETURN(rc); + + /* + * delete LMV so that later when destroying sobj it won't delete + * stripes again. + */ + if (sbuf->lb_buf) { + mdd_write_lock(env, sobj, DT_SRC_CHILD); + rc = mdo_xattr_del(env, sobj, XATTR_NAME_LMV, handle); + mdd_write_unlock(env, sobj); + if (rc) + RETURN(rc); + } + } + + /* don't set nlink from sobj */ + attr->la_valid &= ~LA_NLINK; + + rc = mdd_create_object(env, tpobj, tobj, attr, spec, NULL, NULL, NULL, + hint, handle); + if (rc) + RETURN(rc); + + mdd_write_lock(env, tobj, DT_TGT_CHILD); + rc = mdd_iterate_xattrs(env, sobj, tobj, true, handle, mdo_xattr_set); + mdd_write_unlock(env, tobj); + if (rc) + RETURN(rc); + + /* for regular file, update OST objects XATTR_NAME_FID */ + if (S_ISREG(attr->la_mode)) { + struct lu_buf fid_buf; + + /* target may be remote, update PFID via sobj. */ + fid_buf.lb_buf = (void *)mdo2fid(tobj); + fid_buf.lb_len = sizeof(struct lu_fid); + rc = mdo_xattr_set(env, sobj, &fid_buf, XATTR_NAME_FID, 0, + handle); + if (rc) + RETURN(rc); + + /* delete LOV to avoid deleting OST objs when destroying sobj */ + mdd_write_lock(env, sobj, DT_SRC_CHILD); + rc = mdo_xattr_del(env, sobj, XATTR_NAME_LOV, handle); + mdd_write_unlock(env, sobj); + if (rc) + RETURN(rc); + } + + if (!S_ISDIR(attr->la_mode)) + rc = mdd_iterate_linkea(env, sobj, tobj, lname, mdo2fid(tpobj), + ldata, NULL, handle, mdd_update_link); + + RETURN(rc); +} + +static int mdd_declare_migrate_update(const struct lu_env *env, + struct mdd_object *spobj, + struct mdd_object *tpobj, + struct mdd_object *sobj, + struct mdd_object *tobj, + const struct lu_name *lname, + struct lu_attr *attr, + struct lu_attr *spattr, + struct lu_attr *tpattr, + struct linkea_data *ldata, + bool do_create, + bool do_destroy, + struct md_attr *ma, + struct thandle *handle) +{ + struct mdd_thread_info *info = mdd_env_info(env); + const struct lu_fid *fid = mdo2fid(do_create ? tobj : sobj); + struct lu_attr *la = &info->mti_la_for_fix; + int rc; + + rc = mdo_declare_index_delete(env, spobj, lname->ln_name, handle); + if (rc) + return rc; + + if (S_ISDIR(attr->la_mode)) { + rc = mdo_declare_ref_del(env, spobj, handle); + if (rc) + return rc; + } + + rc = mdo_declare_index_insert(env, tpobj, fid, mdd_object_type(sobj), + lname->ln_name, handle); + if (rc) + return rc; + + rc = mdd_declare_links_add(env, do_create ? tobj : sobj, handle, ldata); + if (rc) + return rc; + + if (S_ISDIR(attr->la_mode)) { + rc = mdo_declare_ref_add(env, tpobj, handle); + if (rc) + return rc; + } + + la->la_valid = LA_CTIME | LA_MTIME; + rc = mdo_declare_attr_set(env, spobj, la, handle); + if (rc) + return rc; + + if (tpobj != spobj) { + rc = mdo_declare_attr_set(env, tpobj, la, handle); + if (rc) + return rc; + } + + if (do_create && do_destroy) { + rc = mdo_declare_ref_del(env, sobj, handle); + if (rc) + return rc; + + rc = mdo_declare_destroy(env, sobj, handle); + if (rc) + return rc; + } + + return rc; +} + +/** + * migrate dirent from \a spobj to \a tpobj, and destroy \a sobj + **/ +static int mdd_migrate_update(const struct lu_env *env, + struct mdd_object *spobj, + struct mdd_object *tpobj, + struct mdd_object *sobj, + struct mdd_object *tobj, + const struct lu_name *lname, + struct lu_attr *attr, + struct lu_attr *spattr, + struct lu_attr *tpattr, + struct linkea_data *ldata, + bool do_create, + bool do_destroy, + struct md_attr *ma, + struct thandle *handle) +{ + struct mdd_thread_info *info = mdd_env_info(env); + const struct lu_fid *fid = mdo2fid(do_create ? tobj : sobj); + struct lu_attr *la = &info->mti_la_for_fix; + int rc; + + ENTRY; + + CDEBUG(D_INFO, "update %s "DFID"/"DFID" to "DFID"/"DFID"\n", + lname->ln_name, PFID(mdo2fid(spobj)), + PFID(mdo2fid(sobj)), PFID(mdo2fid(tpobj)), + PFID(fid)); + + rc = __mdd_index_delete(env, spobj, lname->ln_name, + S_ISDIR(attr->la_mode), handle); + if (rc) + RETURN(rc); + + rc = __mdd_index_insert(env, tpobj, fid, mdd_object_type(sobj), + lname->ln_name, handle); + if (rc) + RETURN(rc); + + rc = mdd_links_write(env, do_create ? tobj : sobj, ldata, handle); + if (rc) + RETURN(rc); + + la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime; + la->la_valid = LA_CTIME | LA_MTIME; + mdd_write_lock(env, spobj, DT_SRC_PARENT); + rc = mdd_update_time(env, spobj, spattr, la, handle); + mdd_write_unlock(env, spobj); + if (rc) + RETURN(rc); + + if (tpobj != spobj) { + la->la_valid = LA_CTIME | LA_MTIME; + mdd_write_lock(env, tpobj, DT_TGT_PARENT); + rc = mdd_update_time(env, tpobj, tpattr, la, handle); + mdd_write_unlock(env, tpobj); + if (rc) + RETURN(rc); + } + + /* + * there are three situations we shouldn't destroy source: + * 1. if source is not dir, and it happens to be located on the same MDT + * as target parent. + * 2. if source is not dir, and has link on the same MDT where source is + * located. + * 3. if source is dir, and it's a normal, non-empty dir. + * + * the first two situations equals to !do_create, and the 3rd equals to + * !do_destroy, so the below condition is actually + * !(!do_create || !do_destroy). + * + * NB, if user has opened source dir before migration, he will get + * -ENOENT error when close it later, because source is likely to be + * remote, which can't be moved to orphan list, but except this error + * message, this won't cause any inconsistency or trouble. + */ + if (do_create && do_destroy) { + mdd_write_lock(env, sobj, DT_SRC_CHILD); + mdo_ref_del(env, sobj, handle); + rc = mdo_destroy(env, sobj, handle); + mdd_write_unlock(env, sobj); + } + + RETURN(rc); +} + +/** + * Migrate directory or file. + * + * migrate source to target in following steps: + * 1. create target, append source stripes after target's if it's directory, + * migrate xattrs and update fid of source links. + * 2. update namespace: migrate dirent from source parent to target parent, + * update file linkea, and destroy source if it's not needed any more. + * + * \param[in] env execution environment + * \param[in] md_pobj parent master object + * \param[in] md_sobj source object + * \param[in] lname file name + * \param[in] md_tobj target object + * \param[in] spec target creation spec + * \param[in] ma used to update \a pobj mtime and ctime + * + * \retval 0 on success + * \retval -errno on failure + */ +static int mdd_migrate(const struct lu_env *env, struct md_object *md_pobj, + struct md_object *md_sobj, const struct lu_name *lname, + struct md_object *md_tobj, struct md_op_spec *spec, + struct md_attr *ma) +{ + struct mdd_device *mdd = mdo2mdd(md_pobj); + struct mdd_thread_info *info = mdd_env_info(env); + struct mdd_object *pobj = md2mdd_obj(md_pobj); + struct mdd_object *sobj = md2mdd_obj(md_sobj); + struct mdd_object *tobj = md2mdd_obj(md_tobj); + struct mdd_object *spobj = NULL; + struct mdd_object *tpobj = NULL; + struct lu_attr *spattr = &info->mti_pattr; + struct lu_attr *tpattr = &info->mti_tpattr; + struct lu_attr *attr = &info->mti_cattr; + struct linkea_data *ldata = &info->mti_link_data; + struct dt_allocation_hint *hint = &info->mti_hint; + struct lu_fid *fid = &info->mti_fid2; + struct lu_buf pbuf = { NULL }; + struct lu_buf sbuf = { NULL }; + struct lmv_mds_md_v1 *plmv; + struct thandle *handle; + bool do_create = true; + bool do_destroy = true; + int rc; + ENTRY; + + rc = mdd_la_get(env, sobj, attr); + if (rc) + RETURN(rc); + + /* locate source and target stripe on pobj, which are the real parent */ + rc = mdd_stripe_get(env, pobj, &pbuf, XATTR_NAME_LMV); + if (rc < 0 && rc != -ENODATA) + RETURN(rc); + + plmv = pbuf.lb_buf; + if (plmv) { + __u32 hash_type = le32_to_cpu(plmv->lmv_hash_type); + __u32 count = le32_to_cpu(plmv->lmv_stripe_count); + int index; + + /* locate target parent stripe */ + if (hash_type & LMV_HASH_FLAG_MIGRATION) { + /* + * fail check here to make sure top dir migration + * succeed. + */ + if (OBD_FAIL_CHECK_RESET(OBD_FAIL_MIGRATE_ENTRIES, 0)) + GOTO(out, rc = -EIO); + hash_type &= ~LMV_HASH_FLAG_MIGRATION; + count = le32_to_cpu(plmv->lmv_migrate_offset); + } + index = lmv_name_to_stripe_index(hash_type, count, + lname->ln_name, + lname->ln_namelen); + if (index < 0) + GOTO(out, rc = index); + + fid_le_to_cpu(fid, &plmv->lmv_stripe_fids[index]); + tpobj = mdd_object_find(env, mdd, fid); + if (IS_ERR(tpobj)) + GOTO(out, rc = PTR_ERR(tpobj)); + + /* locate source parent stripe */ + if (le32_to_cpu(plmv->lmv_hash_type) & + LMV_HASH_FLAG_MIGRATION) { + hash_type = le32_to_cpu(plmv->lmv_migrate_hash); + count = le32_to_cpu(plmv->lmv_stripe_count) - + le32_to_cpu(plmv->lmv_migrate_offset); + + index = lmv_name_to_stripe_index(hash_type, count, + lname->ln_name, + lname->ln_namelen); + if (index < 0) { + mdd_object_put(env, tpobj); + GOTO(out, rc = index); + } + + index += le32_to_cpu(plmv->lmv_migrate_offset); + fid_le_to_cpu(fid, &plmv->lmv_stripe_fids[index]); + spobj = mdd_object_find(env, mdd, fid); + if (IS_ERR(spobj)) { + mdd_object_put(env, tpobj); + GOTO(out, rc = PTR_ERR(spobj)); + } + } else { + spobj = tpobj; + mdd_object_get(spobj); + } + } else { + tpobj = pobj; + spobj = pobj; + mdd_object_get(tpobj); + mdd_object_get(spobj); + } + + rc = mdd_la_get(env, spobj, spattr); + if (rc) + GOTO(out, rc); + + rc = mdd_la_get(env, tpobj, tpattr); + if (rc) + GOTO(out, rc); + + if (S_ISDIR(attr->la_mode)) { + struct lmv_user_md_v1 *lmu = spec->u.sp_ea.eadata; + + LASSERT(lmu); + + /* + * if user use default value '0' for stripe_count, we need to + * adjust it to '1' to create a 1-stripe directory. + */ + if (lmu->lum_stripe_count == 0) { + /* eadata is from request, don't alter it */ + info->mti_lmu = *lmu; + info->mti_lmu.lum_stripe_count = cpu_to_le32(1); + spec->u.sp_ea.eadata = &info->mti_lmu; + lmu = spec->u.sp_ea.eadata; + } + + rc = mdd_stripe_get(env, sobj, &sbuf, XATTR_NAME_LMV); + if (rc == -ENODATA) { + if (mdd_dir_is_empty(env, sobj) == 0) { + /* + * if sobj is empty, and target is not striped, + * create target as a normal directory. + */ + if (le32_to_cpu(lmu->lum_stripe_count) == 1) { + info->mti_lmu = *lmu; + info->mti_lmu.lum_stripe_count = 0; + spec->u.sp_ea.eadata = &info->mti_lmu; + lmu = spec->u.sp_ea.eadata; + } + } else { + /* + * sobj is not striped dir, if it's not empty, + * it will be migrated to be a stripe of target, + * don't destroy it after migration. + */ + do_destroy = false; + } + } else if (rc) { + GOTO(out, rc); + } else { + struct lmv_mds_md_v1 *lmv = sbuf.lb_buf; + + if (le32_to_cpu(lmv->lmv_hash_type) & + LMV_HASH_FLAG_MIGRATION) { + __u32 lum_stripe_count = lmu->lum_stripe_count; + __u32 lmv_hash_type = lmv->lmv_hash_type & + cpu_to_le32(LMV_HASH_TYPE_MASK); + + if (!lum_stripe_count) + lum_stripe_count = cpu_to_le32(1); + + /* TODO: check specific MDTs */ + if (lmv->lmv_migrate_offset != + lum_stripe_count || + lmv->lmv_master_mdt_index != + lmu->lum_stripe_offset || + (lmv_hash_type != 0 && + lmv_hash_type != lmu->lum_hash_type)) { + CERROR("%s: \'"DNAME"\' migration was " + "interrupted, run \'lfs migrate " + "-m %d -c %d -H %d "DNAME"\' to " + "finish migration.\n", + mdd2obd_dev(mdd)->obd_name, + PNAME(lname), + le32_to_cpu( + lmv->lmv_master_mdt_index), + le32_to_cpu( + lmv->lmv_migrate_offset), + le32_to_cpu(lmv_hash_type), + PNAME(lname)); + GOTO(out, rc = -EPERM); + } + GOTO(out, rc = -EALREADY); + } + } + } else if (!mdd_object_remote(tpobj)) { + /* + * if source is already on MDT where target parent is located, + * no need to create, just update namespace. + */ + do_create = false; + } else if (S_ISLNK(attr->la_mode)) { + lu_buf_check_and_alloc(&sbuf, attr->la_size + 1); + if (!sbuf.lb_buf) + GOTO(out, rc = -ENOMEM); + rc = mdd_readlink(env, &sobj->mod_obj, &sbuf); + if (rc <= 0) { + rc = rc ?: -EFAULT; + CERROR("%s: "DFID" readlink failed: rc = %d\n", + mdd2obd_dev(mdd)->obd_name, + PFID(mdo2fid(sobj)), rc); + GOTO(out, rc); + } + spec->u.sp_symname = sbuf.lb_buf; + } else if (S_ISREG(attr->la_mode)) { + spec->sp_cr_flags |= MDS_OPEN_DELAY_CREATE; + spec->sp_cr_flags &= ~MDS_OPEN_HAS_EA; + } + + /* + * if sobj has link on the same MDT, no need to create, just update + * namespace, and it will be a remote file on target parent, which is + * similar to rename. + */ + rc = migrate_linkea_prepare(env, mdd, spobj, tpobj, sobj, lname, attr, + ldata); + if (rc > 0) + do_create = false; + else if (rc) + GOTO(out, rc); + + rc = mdd_migrate_sanity_check(env, mdd, spobj, tpobj, sobj, tobj, + spattr, tpattr, attr); + if (rc) + GOTO(out, rc); - rc = mdd_trans_start(env, mdd, handle); - if (rc != 0) { - CERROR("%s: transaction start failed: rc = %d\n", - mdd2obd_dev(mdd)->obd_name, rc); - GOTO(out_put, rc); - } + mdd_object_make_hint(env, tpobj, tobj, attr, spec, hint); - if (likely(!target_exist)) { - rc = __mdd_index_insert(env, mdd_tobj, &ent->lde_fid, - mdd_object_type(child), - name, handle, - mdd_object_capa(env, mdd_tobj)); - if (rc != 0) - GOTO(out_put, rc); + handle = mdd_trans_create(env, mdd); + if (IS_ERR(handle)) + GOTO(out, rc = PTR_ERR(handle)); - if (is_dir) { - rc = mdo_ref_add(env, mdd_tobj, handle); - if (rc != 0) - GOTO(out_put, rc); + if (do_create) { + rc = mdd_declare_migrate_create(env, tpobj, sobj, tobj, lname, + attr, &sbuf, ldata, spec, hint, + handle); + if (rc) + GOTO(stop_trans, rc); + } - } - } + rc = mdd_declare_migrate_update(env, spobj, tpobj, sobj, tobj, lname, + attr, spattr, tpattr, ldata, do_create, + do_destroy, ma, handle); + if (rc) + GOTO(stop_trans, rc); - rc = __mdd_index_delete(env, mdd_sobj, name, is_dir, handle, - mdd_object_capa(env, mdd_sobj)); - if (rc != 0) - GOTO(out_put, rc); + rc = mdd_declare_changelog_store(env, mdd, CL_MIGRATE, lname, NULL, + handle); + if (rc) + GOTO(stop_trans, rc); - if (is_dir) { - rc = __mdd_index_delete_only(env, child, dotdot, handle, - mdd_object_capa(env, child)); - if (rc != 0) - GOTO(out_put, rc); + rc = mdd_trans_start(env, mdd, handle); + if (rc) + GOTO(stop_trans, rc); - rc = __mdd_index_insert_only(env, child, - mdd_object_fid(mdd_tobj), S_IFDIR, - dotdot, handle, - mdd_object_capa(env, child)); - if (rc != 0) - GOTO(out_put, rc); - } + if (do_create) { + rc = mdd_migrate_create(env, tpobj, sobj, tobj, lname, attr, + &sbuf, ldata, spec, hint, handle); + if (rc) + GOTO(stop_trans, rc); + } - rc = mdd_linkea_update_child(env, mdd_tobj, child, name, - strlen(name), handle); + rc = mdd_migrate_update(env, spobj, tpobj, sobj, tobj, lname, attr, + spattr, tpattr, ldata, do_create, do_destroy, + ma, handle); + if (rc) + GOTO(stop_trans, rc); -out_put: - mdd_object_put(env, child); - mdd_trans_stop(env, mdd, rc, handle); - if (rc != 0) - GOTO(out, rc); -next: - result = iops->next(env, it); - if (OBD_FAIL_CHECK(OBD_FAIL_MIGRATE_ENTRIES)) - GOTO(out, rc = -EINTR); + rc = mdd_changelog_ns_store(env, mdd, CL_MIGRATE, 0, tobj, + mdo2fid(spobj), mdo2fid(sobj), + mdo2fid(tpobj), lname, lname, handle); + if (rc) + GOTO(stop_trans, rc); - if (result == -ESTALE) - goto next; - } while (result == 0); + EXIT; +stop_trans: + rc = mdd_trans_stop(env, mdd, rc, handle); out: - iops->put(env, it); - iops->fini(env, it); -out_ent: - OBD_FREE(ent, NAME_MAX + sizeof(*ent) + 1); - RETURN(rc); + if (spobj && !IS_ERR(spobj)) + mdd_object_put(env, spobj); + if (tpobj && !IS_ERR(tpobj)) + mdd_object_put(env, tpobj); + lu_buf_free(&sbuf); + lu_buf_free(&pbuf); + return rc; } -static int mdd_declare_update_linkea(const struct lu_env *env, - struct mdd_object *mdd_pobj, - struct mdd_object *mdd_sobj, - struct mdd_object *mdd_tobj, - struct thandle *handle, - const struct lu_name *child_name) +static int __mdd_dir_declare_layout_shrink(const struct lu_env *env, + struct mdd_object *pobj, + struct mdd_object *obj, + struct mdd_object *stripe, + struct lu_attr *attr, + struct lu_buf *lmv_buf, + const struct lu_buf *lmu_buf, + struct lu_name *lname, + struct thandle *handle) { - return mdd_update_linkea_internal(env, mdd_pobj, mdd_sobj, mdd_tobj, - child_name, handle, 1); -} + struct mdd_thread_info *info = mdd_env_info(env); + struct lmv_mds_md_v1 *lmv = lmv_buf->lb_buf; + struct lmv_user_md *lmu = (typeof(lmu))info->mti_key; + struct lu_buf shrink_buf = { .lb_buf = lmu, + .lb_len = sizeof(*lmu) }; + int rc; -static int mdd_update_linkea(const struct lu_env *env, - struct mdd_object *mdd_pobj, - struct mdd_object *mdd_sobj, - struct mdd_object *mdd_tobj, - struct thandle *handle, - const struct lu_name *child_name) -{ - return mdd_update_linkea_internal(env, mdd_pobj, mdd_sobj, mdd_tobj, - child_name, handle, 0); -} + LASSERT(lmv); -static int mdd_declare_migrate_update_name(const struct lu_env *env, - struct mdd_object *mdd_pobj, - struct mdd_object *mdd_sobj, - struct mdd_object *mdd_tobj, - const struct lu_name *lname, - struct lu_attr *la, - struct lu_attr *parent_la, - struct thandle *handle) -{ - struct lu_attr *la_flag = MDD_ENV_VAR(env, tattr); - int rc; + memcpy(lmu, lmu_buf->lb_buf, sizeof(*lmu)); - /* Revert IMMUTABLE flag */ - la_flag->la_valid = LA_FLAGS; - la_flag->la_flags = la->la_flags & ~LUSTRE_IMMUTABLE_FL; - mdd_flags_xlate(mdd_sobj, la_flag->la_flags); - rc = mdo_declare_attr_set(env, mdd_sobj, la_flag, handle); - if (rc != 0) - return rc; + if (le32_to_cpu(lmu->lum_stripe_count) < 2) + lmu->lum_stripe_count = 0; - /* delete entry from source dir */ - rc = mdo_declare_index_delete(env, mdd_pobj, lname->ln_name, handle); - if (rc != 0) + rc = mdd_dir_declare_layout_delete(env, obj, lmv_buf, &shrink_buf, + handle); + if (rc) return rc; - rc = mdd_declare_update_linkea(env, mdd_pobj, mdd_sobj, - mdd_tobj, handle, lname); - if (rc != 0) - return rc; + if (lmu->lum_stripe_count == 0) { + lmu->lum_stripe_count = cpu_to_le32(1); - if (S_ISREG(mdd_object_type(mdd_sobj))) { - rc = mdo_declare_xattr_del(env, mdd_sobj, XATTR_NAME_LOV, - handle); - if (rc != 0) + rc = mdo_declare_xattr_del(env, obj, XATTR_NAME_LMV, handle); + if (rc) return rc; } - if (S_ISDIR(mdd_object_type(mdd_sobj))) { - rc = mdo_declare_ref_del(env, mdd_pobj, handle); - if (rc != 0) - return rc; - } + rc = mdd_dir_iterate_stripes(env, obj, lmv_buf, &shrink_buf, handle, + mdd_dir_declare_destroy_stripe); + if (rc) + return rc; - /* new name */ - rc = mdo_declare_index_insert(env, mdd_pobj, mdo2fid(mdd_tobj), - mdd_object_type(mdd_tobj), - lname->ln_name, handle); - if (rc != 0) + if (le32_to_cpu(lmu->lum_stripe_count) > 1) + return mdo_declare_xattr_set(env, obj, lmv_buf, + XATTR_NAME_LMV".set", 0, handle); + + rc = mdo_declare_index_insert(env, stripe, mdo2fid(pobj), S_IFDIR, + dotdot, handle); + if (rc) return rc; - if (S_ISDIR(mdd_object_type(mdd_sobj))) { - rc = mdo_declare_ref_add(env, mdd_pobj, handle); - if (rc != 0) - return rc; - } + rc = mdd_iterate_xattrs(env, obj, stripe, false, handle, + mdo_declare_xattr_set); + if (rc) + return rc; - /* delete old object */ - rc = mdo_declare_ref_del(env, mdd_sobj, handle); - if (rc != 0) + rc = mdo_declare_xattr_del(env, stripe, XATTR_NAME_LMV, handle); + if (rc) return rc; - if (S_ISDIR(mdd_object_type(mdd_sobj))) { - /* delete old object */ - rc = mdo_declare_ref_del(env, mdd_sobj, handle); - if (rc != 0) - return rc; - /* set nlink to 0 */ - rc = mdo_declare_attr_set(env, mdd_sobj, la, handle); - if (rc != 0) - return rc; - } + rc = mdo_declare_attr_set(env, stripe, attr, handle); + if (rc) + return rc; + + rc = mdo_declare_index_delete(env, pobj, lname->ln_name, handle); + if (rc) + return rc; + + rc = mdo_declare_index_insert(env, pobj, mdo2fid(stripe), attr->la_mode, + lname->ln_name, handle); + if (rc) + return rc; + + rc = mdo_declare_ref_del(env, obj, handle); + if (rc) + return rc; - rc = mdd_declare_finish_unlink(env, mdd_sobj, handle); + rc = mdo_declare_ref_del(env, obj, handle); if (rc) return rc; - rc = mdo_declare_attr_set(env, mdd_pobj, parent_la, handle); + rc = mdo_declare_destroy(env, obj, handle); + if (rc) + return rc; return rc; + } -static int mdd_migrate_update_name(const struct lu_env *env, - struct mdd_object *mdd_pobj, - struct mdd_object *mdd_sobj, - struct mdd_object *mdd_tobj, - const struct lu_name *lname, - struct md_attr *ma) +/* + * after files under \a obj were migrated, shrink old stripes from \a obj, + * furthermore, if it becomes a 1-stripe directory, convert it to a normal one. + */ +static int __mdd_dir_layout_shrink(const struct lu_env *env, + struct mdd_object *pobj, + struct mdd_object *obj, + struct mdd_object *stripe, + struct lu_attr *attr, + struct lu_buf *lmv_buf, + const struct lu_buf *lmu_buf, + struct lu_name *lname, + struct thandle *handle) { - struct lu_attr *p_la = MDD_ENV_VAR(env, la_for_fix); - struct lu_attr *so_attr = MDD_ENV_VAR(env, cattr); - struct lu_attr *la_flag = MDD_ENV_VAR(env, tattr); - struct mdd_device *mdd = mdo2mdd(&mdd_sobj->mod_obj); - struct thandle *handle; - int is_dir = S_ISDIR(mdd_object_type(mdd_sobj)); - const char *name = lname->ln_name; - int rc; + struct mdd_thread_info *info = mdd_env_info(env); + struct lmv_mds_md_v1 *lmv = lmv_buf->lb_buf; + struct lmv_user_md *lmu = (typeof(lmu))info->mti_key; + struct lu_buf shrink_buf = { .lb_buf = lmu, + .lb_len = sizeof(*lmu) }; + int len = lmv_buf->lb_len; + __u32 version = le32_to_cpu(lmv->lmv_layout_version); + int rc; + ENTRY; - /* update time for parent */ - LASSERT(ma->ma_attr.la_valid & LA_CTIME); - p_la->la_ctime = p_la->la_mtime = ma->ma_attr.la_ctime; - p_la->la_valid = LA_CTIME; + /* lmu needs to be altered, but lmu_buf is const */ + memcpy(lmu, lmu_buf->lb_buf, sizeof(*lmu)); - rc = mdd_la_get(env, mdd_sobj, so_attr, mdd_object_capa(env, mdd_sobj)); - if (rc != 0) + /* + * if dir will be shrunk to 1-stripe, delete all stripes, because it + * will be converted to normal dir. + */ + if (le32_to_cpu(lmu->lum_stripe_count) == 1) + lmu->lum_stripe_count = 0; + + /* delete stripes after lmu_stripe_count */ + rc = mdd_dir_layout_delete(env, obj, lmv_buf, &shrink_buf, handle); + if (rc) RETURN(rc); - handle = mdd_trans_create(env, mdd); - if (IS_ERR(handle)) - RETURN(PTR_ERR(handle)); + if (lmu->lum_stripe_count == 0) { + lmu->lum_stripe_count = cpu_to_le32(1); - rc = mdd_declare_migrate_update_name(env, mdd_pobj, mdd_sobj, mdd_tobj, - lname, so_attr, p_la, handle); - if (rc != 0) { - /* If the migration can not be fit in one transaction, just - * leave it in the original MDT */ - if (rc == -E2BIG) - GOTO(stop_trans, rc = 0); - else - GOTO(stop_trans, rc); + /* delete LMV to avoid deleting stripes again upon destroy */ + mdd_write_lock(env, obj, DT_SRC_CHILD); + rc = mdo_xattr_del(env, obj, XATTR_NAME_LMV, handle); + mdd_write_unlock(env, obj); + if (rc) + RETURN(rc); } - CDEBUG(D_INFO, "%s: update "DFID"/"DFID" with %s:"DFID"\n", - mdd2obd_dev(mdd)->obd_name, PFID(mdd_object_fid(mdd_pobj)), - PFID(mdd_object_fid(mdd_sobj)), lname->ln_name, - PFID(mdd_object_fid(mdd_tobj))); + /* destroy stripes after lmu_stripe_count */ + mdd_write_lock(env, obj, DT_SRC_PARENT); + rc = mdd_dir_iterate_stripes(env, obj, lmv_buf, &shrink_buf, handle, + mdd_dir_destroy_stripe); + mdd_write_unlock(env, obj); + + if (le32_to_cpu(lmu->lum_stripe_count) > 1) { + /* update dir LMV, that's all if it's still striped. */ + lmv->lmv_stripe_count = lmu->lum_stripe_count; + lmv->lmv_hash_type &= ~cpu_to_le32(LMV_HASH_FLAG_MIGRATION); + lmv->lmv_migrate_offset = 0; + lmv->lmv_migrate_hash = 0; + lmv->lmv_layout_version = cpu_to_le32(++version); + + lmv_buf->lb_len = sizeof(*lmv); + rc = mdo_xattr_set(env, obj, lmv_buf, XATTR_NAME_LMV".set", 0, + handle); + lmv_buf->lb_len = len; + RETURN(rc); + } - rc = mdd_trans_start(env, mdd, handle); - if (rc != 0) - GOTO(stop_trans, rc); + /* replace directory with its remaining stripe */ + LASSERT(pobj); + LASSERT(stripe); - /* Revert IMMUTABLE flag */ - la_flag->la_valid = LA_FLAGS; - la_flag->la_flags = so_attr->la_flags & ~LUSTRE_IMMUTABLE_FL; - mdd_flags_xlate(mdd_sobj, la_flag->la_flags); - rc = mdo_attr_set(env, mdd_sobj, la_flag, handle, - mdd_object_capa(env, mdd_pobj)); - if (rc != 0) - GOTO(stop_trans, rc); + mdd_write_lock(env, pobj, DT_SRC_PARENT); + mdd_write_lock(env, obj, DT_SRC_CHILD); - /* Remove source name from source directory */ - rc = __mdd_index_delete(env, mdd_pobj, name, is_dir, handle, - mdd_object_capa(env, mdd_pobj)); - if (rc != 0) - GOTO(stop_trans, rc); + /* insert dotdot to stripe which points to parent */ + rc = __mdd_index_insert_only(env, stripe, mdo2fid(pobj), S_IFDIR, + dotdot, handle); + if (rc) + GOTO(out, rc); - rc = mdd_update_linkea(env, mdd_pobj, mdd_sobj, mdd_tobj, - handle, lname); - if (rc != 0) - GOTO(stop_trans, rc); + /* copy xattrs including linkea */ + rc = mdd_iterate_xattrs(env, obj, stripe, false, handle, mdo_xattr_set); + if (rc) + GOTO(out, rc); - if (S_ISREG(so_attr->la_mode)) { - if (so_attr->la_nlink == 1) { - rc = mdo_xattr_del(env, mdd_sobj, XATTR_NAME_LOV, - handle, - mdd_object_capa(env, mdd_sobj)); - if (rc != 0 && rc != -ENODATA) - GOTO(stop_trans, rc); - } - } + /* delete LMV */ + rc = mdo_xattr_del(env, stripe, XATTR_NAME_LMV, handle); + if (rc) + GOTO(out, rc); - /* Insert new fid with target name into target dir */ - rc = __mdd_index_insert(env, mdd_pobj, mdd_object_fid(mdd_tobj), - mdd_object_type(mdd_tobj), name, - handle, mdd_object_capa(env, mdd_pobj)); - if (rc != 0) - GOTO(stop_trans, rc); + /* don't set nlink from parent */ + attr->la_valid &= ~LA_NLINK; - rc = mdd_links_add(env, mdd_tobj, mdo2fid(mdd_pobj), lname, handle, - NULL, 1); - if (rc != 0) - GOTO(stop_trans, rc); + rc = mdo_attr_set(env, stripe, attr, handle); + if (rc) + GOTO(out, rc); - mdd_write_lock(env, mdd_sobj, MOR_SRC_CHILD); - mdo_ref_del(env, mdd_sobj, handle); - if (is_dir) - mdo_ref_del(env, mdd_sobj, handle); + /* delete dir name from parent */ + rc = __mdd_index_delete_only(env, pobj, lname->ln_name, handle); + if (rc) + GOTO(out, rc); - /* Get the attr again after ref_del */ - rc = mdd_la_get(env, mdd_sobj, so_attr, - mdd_object_capa(env, mdd_sobj)); - if (rc != 0) - GOTO(out_unlock, rc); + /* insert stripe to parent with dir name */ + rc = __mdd_index_insert_only(env, pobj, mdo2fid(stripe), attr->la_mode, + lname->ln_name, handle); + if (rc) + GOTO(out, rc); - ma->ma_attr = *so_attr; - ma->ma_valid |= MA_INODE; - rc = mdd_finish_unlink(env, mdd_sobj, ma, mdd_pobj, lname, handle); - if (rc != 0) - GOTO(out_unlock, rc); + /* destroy dir obj */ + rc = mdo_ref_del(env, obj, handle); + if (rc) + GOTO(out, rc); - rc = mdd_attr_set_internal(env, mdd_pobj, p_la, handle, 0); - if (rc != 0) - GOTO(out_unlock, rc); + rc = mdo_ref_del(env, obj, handle); + if (rc) + GOTO(out, rc); -out_unlock: - mdd_write_unlock(env, mdd_sobj); + rc = mdo_destroy(env, obj, handle); + if (rc) + GOTO(out, rc); -stop_trans: - mdd_trans_stop(env, mdd, rc, handle); + EXIT; +out: + mdd_write_unlock(env, obj); + mdd_write_unlock(env, pobj); - RETURN(rc); + return rc; } -/** - * Check whether we should migrate the file/dir - * return val - * < 0 permission check failed or other error. - * = 0 the file can be migrated. - * > 0 the file does not need to be migrated, mostly - * for multiple link file - **/ -static int mdd_migrate_sanity_check(const struct lu_env *env, - struct mdd_object *pobj, - const struct lu_attr *pattr, - struct mdd_object *sobj, - struct lu_attr *sattr) +/* + * shrink directory stripes to lum_stripe_count specified by lum_mds_md. + */ +int mdd_dir_layout_shrink(const struct lu_env *env, + struct md_object *md_obj, + const struct lu_buf *lmu_buf) { - struct mdd_thread_info *info = mdd_env_info(env); - struct linkea_data *ldata = &info->mti_link_data; - int mgr_easize; - struct lu_buf *mgr_buf; - int count; - int rc; + struct mdd_device *mdd = mdo2mdd(md_obj); + struct mdd_thread_info *info = mdd_env_info(env); + struct mdd_object *obj = md2mdd_obj(md_obj); + struct mdd_object *pobj = NULL; + struct mdd_object *stripe = NULL; + struct lu_attr *attr = &info->mti_pattr; + struct lu_fid *fid = &info->mti_fid2; + struct lu_name lname = { NULL }; + struct lu_buf lmv_buf = { NULL }; + struct lmv_mds_md_v1 *lmv; + struct lmv_user_md *lmu; + struct thandle *handle; + int rc; ENTRY; - mgr_easize = lmv_mds_md_size(2, LMV_MAGIC_V1); - mgr_buf = lu_buf_check_and_alloc(&info->mti_big_buf, mgr_easize); - if (mgr_buf->lb_buf == NULL) - RETURN(-ENOMEM); + rc = mdd_la_get(env, obj, attr); + if (rc) + RETURN(rc); - rc = mdo_xattr_get(env, sobj, mgr_buf, XATTR_NAME_LMV, - mdd_object_capa(env, sobj)); - if (rc > 0) { - union lmv_mds_md *lmm = mgr_buf->lb_buf; - - /* If the object has migrateEA, it means IMMUTE flag - * is being set by previous migration process, so it - * needs to override the IMMUTE flag, otherwise the - * following sanity check will fail */ - if (le32_to_cpu(lmm->lmv_md_v1.lmv_hash_type) & - LMV_HASH_FLAG_MIGRATION) { - struct mdd_device *mdd = mdo2mdd(&sobj->mod_obj); - - sattr->la_flags &= ~LUSTRE_IMMUTABLE_FL; - sobj->mod_flags &= ~IMMUTE_OBJ; - CDEBUG(D_HA, "%s: "DFID" override IMMUTE FLAG\n", - mdd2obd_dev(mdd)->obd_name, - PFID(mdd_object_fid(sobj))); - } - } + if (!S_ISDIR(attr->la_mode)) + RETURN(-ENOTDIR); - rc = mdd_rename_sanity_check(env, pobj, pattr, pobj, pattr, - sobj, sattr, NULL, NULL); - if (rc != 0) + rc = mdd_stripe_get(env, obj, &lmv_buf, XATTR_NAME_LMV); + if (rc < 0) RETURN(rc); - /* Then it will check if the file should be migrated. If the file - * has mulitple links, we only need migrate the file if all of its - * entries has been migrated to the remote MDT */ - if (!S_ISREG(sattr->la_mode) || sattr->la_nlink < 2) - RETURN(0); + lmv = lmv_buf.lb_buf; + lmu = lmu_buf->lb_buf; - rc = mdd_links_read(env, sobj, ldata); - if (rc != 0) { - /* For multiple links files, if there are no linkEA data at all, - * means the file might be created before linkEA is enabled, and - * all all of its links should not be migrated yet, otherwise - * it should have some linkEA there */ - if (rc == -ENOENT || rc == -ENODATA) - RETURN(1); - RETURN(rc); - } + /* this was checked in MDT */ + LASSERT(le32_to_cpu(lmu->lum_stripe_count) < + le32_to_cpu(lmv->lmv_stripe_count)); - /* If it is mulitple links file, we need update the name entry for - * all parent */ - LASSERT(ldata->ld_leh != NULL); - ldata->ld_lee = (struct link_ea_entry *)(ldata->ld_leh + 1); - for (count = 0; count < ldata->ld_leh->leh_reccount; count++) { - struct mdd_device *mdd = mdo2mdd(&sobj->mod_obj); - struct mdd_object *lpobj; - struct lu_name lname; - struct lu_fid fid; - - linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, - &lname, &fid); - ldata->ld_lee = (struct link_ea_entry *)((char *)ldata->ld_lee + - ldata->ld_reclen); - lpobj = mdd_object_find(env, mdd, &fid); - if (IS_ERR(lpobj)) { - CWARN("%s: cannot find obj "DFID": rc = %ld\n", - mdd2obd_dev(mdd)->obd_name, PFID(&fid), - PTR_ERR(lpobj)); - continue; - } + rc = mdd_dir_iterate_stripes(env, obj, &lmv_buf, lmu_buf, NULL, + mdd_shrink_stripe_is_empty); + if (rc < 0) + GOTO(out, rc); + else if (rc != 0) + GOTO(out, rc = -ENOTEMPTY); - if (!mdd_object_exists(lpobj) || mdd_object_remote(lpobj)) { - CDEBUG(D_INFO, DFID"%.*s: is on remote MDT.\n", - PFID(&fid), lname.ln_namelen, lname.ln_name); - mdd_object_put(env, lpobj); - continue; - } + /* + * if obj stripe count will be shrunk to 1, we need to convert it to a + * normal dir, which will change its fid and update parent namespace, + * get obj name and parent fid from linkea. + */ + if (le32_to_cpu(lmu->lum_stripe_count) < 2) { + struct linkea_data *ldata = &info->mti_link_data; + char *filename = info->mti_name; - CDEBUG(D_INFO, DFID"still has local entry %.*s "DFID"\n", - PFID(mdd_object_fid(sobj)), lname.ln_namelen, - lname.ln_name, PFID(&fid)); - mdd_object_put(env, lpobj); - rc = 1; - break; - } + rc = mdd_links_read(env, obj, ldata); + if (rc) + GOTO(out, rc); - RETURN(rc); -} + if (ldata->ld_leh->leh_reccount > 1) + GOTO(out, rc = -EINVAL); -static int mdd_migrate(const struct lu_env *env, struct md_object *pobj, - struct md_object *sobj, const struct lu_name *lname, - struct md_object *tobj, struct md_attr *ma) -{ - struct mdd_object *mdd_pobj = md2mdd_obj(pobj); - struct mdd_device *mdd = mdo2mdd(pobj); - struct mdd_object *mdd_sobj = md2mdd_obj(sobj); - struct mdd_object *mdd_tobj = NULL; - struct lu_attr *so_attr = MDD_ENV_VAR(env, cattr); - struct lu_attr *pattr = MDD_ENV_VAR(env, pattr); - int rc; + linkea_first_entry(ldata); + if (!ldata->ld_lee) + GOTO(out, rc = -ENODATA); - ENTRY; - /* If the file will being migrated, it will check whether - * the file is being opened by someone else right now */ - mdd_read_lock(env, mdd_sobj, MOR_SRC_CHILD); - if (mdd_sobj->mod_count >= 1) { - CERROR("%s: "DFID"%s is already opened count %d: rc = %d\n", - mdd2obd_dev(mdd)->obd_name, - PFID(mdd_object_fid(mdd_sobj)), lname->ln_name, - mdd_sobj->mod_count, -EBUSY); - mdd_read_unlock(env, mdd_sobj); - GOTO(put, rc = -EBUSY); - } - mdd_read_unlock(env, mdd_sobj); - - rc = mdd_la_get(env, mdd_sobj, so_attr, mdd_object_capa(env, mdd_sobj)); - if (rc != 0) - GOTO(put, rc); + linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, &lname, + fid); - rc = mdd_la_get(env, mdd_pobj, pattr, BYPASS_CAPA); - if (rc != 0) - GOTO(put, rc); + /* Note: lname might miss \0 at the end */ + snprintf(filename, sizeof(info->mti_name), "%.*s", + lname.ln_namelen, lname.ln_name); + lname.ln_name = filename; - rc = mdd_migrate_sanity_check(env, mdd_pobj, pattr, mdd_sobj, so_attr); - if (rc != 0) { - if (rc > 0) - rc = 0; - GOTO(put, rc); - } + pobj = mdd_object_find(env, mdd, fid); + if (IS_ERR(pobj)) { + rc = PTR_ERR(pobj); + pobj = NULL; + GOTO(out, rc); + } - /* Sigh, it is impossible to finish all of migration in a single - * transaction, for example migrating big directory entries to the - * new MDT, it needs insert all of name entries of children in the - * new directory. - * - * So migration will be done in multiple steps and transactions. - * - * 1. create an orphan object on the remote MDT in one transaction. - * 2. migrate extend attributes to the new target file/directory. - * 3. For directory, migrate the entries to the new MDT and update - * linkEA of each children. Because we can not migrate all entries - * in a single transaction, so the migrating directory will become - * a striped directory during migration, so once the process is - * interrupted, the directory is still accessible. (During lookup, - * client will locate the name by searching both original and target - * object). - * 4. Finally, update the name/FID to point to the new file/directory - * in a separate transaction. - */ + fid_le_to_cpu(fid, &lmv->lmv_stripe_fids[0]); - /* step 1: Check whether the orphan object has been created, and create - * orphan object on the remote MDT if needed */ - mdd_tobj = md2mdd_obj(tobj); - if (!mdd_object_exists(mdd_tobj)) { - rc = mdd_migrate_create(env, mdd_pobj, mdd_sobj, mdd_tobj, - so_attr); - if (rc != 0) - GOTO(put, rc); + stripe = mdd_object_find(env, mdd, fid); + if (IS_ERR(stripe)) { + mdd_object_put(env, pobj); + pobj = NULL; + GOTO(out, rc = PTR_ERR(stripe)); + } } - /* step 2: migrate xattr */ - rc = mdd_migrate_xattrs(env, mdd_sobj, mdd_tobj); - if (rc != 0) - GOTO(put, rc); + handle = mdd_trans_create(env, mdd); + if (IS_ERR(handle)) + GOTO(out, rc = PTR_ERR(handle)); - /* step 3: migrate name entries to the orphan object */ - if (S_ISDIR(lu_object_attr(&mdd_sobj->mod_obj.mo_lu))) { - rc = mdd_migrate_entries(env, mdd_sobj, mdd_tobj); - if (rc != 0) - GOTO(put, rc); - if (unlikely(OBD_FAIL_CHECK_RESET(OBD_FAIL_MIGRATE_NET_REP, - OBD_FAIL_MDS_REINT_NET_REP))) - GOTO(put, rc = 0); - } + rc = __mdd_dir_declare_layout_shrink(env, pobj, obj, stripe, attr, + &lmv_buf, lmu_buf, &lname, handle); + if (rc) + GOTO(stop_trans, rc); - /* step 4: update name entry to the new object */ - rc = mdd_migrate_update_name(env, mdd_pobj, mdd_sobj, mdd_tobj, lname, - ma); - if (rc != 0) - GOTO(put, rc); -put: - RETURN(rc); + rc = mdd_declare_changelog_store(env, mdd, CL_LAYOUT, NULL, NULL, + handle); + if (rc) + GOTO(stop_trans, rc); + + rc = mdd_trans_start(env, mdd, handle); + if (rc) + GOTO(stop_trans, rc); + + rc = __mdd_dir_layout_shrink(env, pobj, obj, stripe, attr, &lmv_buf, + lmu_buf, &lname, handle); + if (rc) + GOTO(stop_trans, rc); + + rc = mdd_changelog_data_store_xattr(env, mdd, CL_LAYOUT, 0, obj, + XATTR_NAME_LMV, handle); + GOTO(stop_trans, rc); + +stop_trans: + rc = mdd_trans_stop(env, mdd, rc, handle); +out: + if (pobj) { + mdd_object_put(env, stripe); + mdd_object_put(env, pobj); + } + lu_buf_free(&lmv_buf); + return rc; } const struct md_dir_operations mdd_dir_ops = {