X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre%2Fmdd%2Fmdd_dir.c;h=2f69cc7a10f482e4ae485bd38cd3d4fb21b0166a;hp=ed63745f9588e0dee076a0fc878655a6e0a0648f;hb=bd7a2f9938a7edf09afd133601ca4181e109a7d0;hpb=ccabce23bd9e366c345c852f565766a799f61238 diff --git a/lustre/mdd/mdd_dir.c b/lustre/mdd/mdd_dir.c index ed63745..2f69cc7 100644 --- a/lustre/mdd/mdd_dir.c +++ b/lustre/mdd/mdd_dir.c @@ -27,7 +27,6 @@ */ /* * This file is part of Lustre, http://www.lustre.org/ - * Lustre is a trademark of Sun Microsystems, Inc. * * lustre/mdd/mdd_dir.c * @@ -42,6 +41,8 @@ #include #include #include +#include +#include #include "mdd_internal.h" @@ -68,14 +69,14 @@ mdd_name_check(struct mdd_device *m, const struct lu_name *ln) static int __mdd_lookup(const struct lu_env *env, struct md_object *pobj, const struct lu_attr *pattr, const struct lu_name *lname, - struct lu_fid* fid, int mask) + struct lu_fid *fid, unsigned int may_mask) { - const char *name = lname->ln_name; - const struct dt_key *key = (const struct dt_key *)name; - struct mdd_object *mdd_obj = md2mdd_obj(pobj); - struct mdd_device *m = mdo2mdd(pobj); - struct dt_object *dir = mdd_object_child(mdd_obj); - int rc; + const char *name = lname->ln_name; + const struct dt_key *key = (const struct dt_key *)name; + struct mdd_object *mdd_obj = md2mdd_obj(pobj); + struct dt_object *dir = mdd_object_child(mdd_obj); + int rc; + ENTRY; if (unlikely(mdd_is_dead_obj(mdd_obj))) @@ -85,12 +86,13 @@ __mdd_lookup(const struct lu_env *env, struct md_object *pobj, 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))); + CDEBUG(D_INFO, "%s: Object "DFID" located on remote server\n", + mdd_obj_dev_name(mdd_obj), + PFID(mdd_object_fid(mdd_obj))); } - rc = mdd_permission_internal_locked(env, mdd_obj, pattr, mask, - MOR_TGT_PARENT); + rc = mdd_permission_internal_locked(env, mdd_obj, pattr, may_mask, + DT_TGT_PARENT); if (rc) RETURN(rc); @@ -121,7 +123,7 @@ int mdd_lookup(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. + * Uses the mdd_thread_info::mti_link_buf since it is generally large. * A pointer to the buffer is stored in \a ldata::ld_buf. * * \retval 0 or error @@ -165,9 +167,9 @@ static int __mdd_links_read(const struct lu_env *env, return linkea_init(ldata); } -static int mdd_links_read(const struct lu_env *env, - struct mdd_object *mdd_obj, - struct linkea_data *ldata) +int mdd_links_read(const struct lu_env *env, + struct mdd_object *mdd_obj, + struct linkea_data *ldata) { int rc; @@ -218,7 +220,10 @@ static inline int mdd_parent_fid(const struct lu_env *env, ENTRY; - LASSERT(S_ISDIR(mdd_object_type(obj))); + 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) @@ -229,6 +234,9 @@ static inline int mdd_parent_fid(const struct lu_env *env, if (rc != 0) GOTO(lookup, rc); + /* the obj is not locked, don't cache attributes */ + mdd_invalidate(env, &obj->mod_obj); + LASSERT(ldata.ld_leh != NULL); /* Directory should only have 1 parent */ if (ldata.ld_leh->leh_reccount > 1) @@ -255,61 +263,56 @@ 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(mdd_object_fid(mo), tfid)); + pfid = &mdd_env_info(env)->mti_fid; + + if (mdd_is_root(mdd, mdd_object_fid(mo))) + return 0; + + if (mdd_is_root(mdd, tfid)) + return 1; + + 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; - LASSERT(!lu_fid_eq(mdo2fid(p1), lf)); - pfid = &mdd_env_info(env)->mti_fid; + mp = mdd_object_find(env, mdd, pfid); + if (IS_ERR(mp)) + return PTR_ERR(mp); - /* Check for root first. */ - if (mdd_is_root(mdd, mdo2fid(p1))) - RETURN(0); + if (!mdd_object_exists(mp)) { + mdd_object_put(env, mp); + return -ENOENT; + } - for(;;) { - /* this is done recursively */ - rc = mdd_parent_fid(env, p1, attr, pfid); + rc = mdd_parent_fid(env, mp, attr, pfid); + mdd_object_put(env, mp); 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 != NULL) - mdd_object_put(env, parent); - - parent = mdd_object_find(env, mdd, pfid); - if (IS_ERR(parent)) - GOTO(out, rc = PTR_ERR(parent)); - - if (!mdd_object_exists(parent)) - GOTO(out, rc = -EINVAL); + return rc; + } - p1 = parent; - } - EXIT; -out: - if (parent && !IS_ERR(parent)) - mdd_object_put(env, parent); - return rc; + return 0; } /* @@ -317,36 +320,27 @@ out: * * returns 1: if fid is ancestor of @mo; * returns 0: if fid is not an ancestor of @mo; - * - * returns EREMOTE if remote object is found, fid of remote object is saved to - * @fid; - * * 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); 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); } @@ -361,8 +355,7 @@ int mdd_is_subdir(const struct lu_env *env, struct md_object *mo, * -ve other error * */ -static int mdd_dir_is_empty(const struct lu_env *env, - struct mdd_object *dir) +int mdd_dir_is_empty(const struct lu_env *env, struct mdd_object *dir) { struct dt_it *it; struct dt_object *obj; @@ -394,8 +387,12 @@ 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); } @@ -459,7 +456,7 @@ int mdd_may_create(const struct lu_env *env, struct mdd_object *pobj, if (check_perm) rc = mdd_permission_internal_locked(env, pobj, pattr, MAY_WRITE | MAY_EXEC, - MOR_TGT_PARENT); + DT_TGT_PARENT); RETURN(rc); } @@ -480,7 +477,7 @@ int mdd_may_unlink(const struct lu_env *env, struct mdd_object *pobj, rc = mdd_permission_internal_locked(env, pobj, pattr, MAY_WRITE | MAY_EXEC, - MOR_TGT_PARENT); + DT_TGT_PARENT); if (rc != 0) RETURN(rc); @@ -513,7 +510,7 @@ static inline int mdd_is_sticky(const struct lu_env *env, if (cattr->la_uid == uc->uc_fsuid) return 0; - return !md_capable(uc, CFS_CAP_FOWNER); + return !md_capable(uc, CAP_FOWNER); } static int mdd_may_delete_entry(const struct lu_env *env, @@ -534,7 +531,7 @@ 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); } @@ -582,12 +579,11 @@ int mdd_may_delete(const struct lu_env *env, struct mdd_object *tpobj, /* additional check the rename case */ if (cattr) { if (S_ISDIR(cattr->la_mode)) { - struct mdd_device *mdd = mdo2mdd(&tobj->mod_obj); - if (!S_ISDIR(tattr->la_mode)) RETURN(-ENOTDIR); - if (lu_fid_eq(mdo2fid(tobj), &mdd->mdd_root_fid)) + if (mdd_is_root(mdo2mdd(&tobj->mod_obj), + mdd_object_fid(tobj))) RETURN(-EBUSY); } else if (S_ISDIR(tattr->la_mode)) RETURN(-EISDIR); @@ -679,15 +675,11 @@ 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, - ignore_quota); + (const struct dt_key *)name, handle); } else { rc = -ENOTDIR; } @@ -704,7 +696,7 @@ static int __mdd_index_insert(const struct lu_env *env, struct mdd_object *pobj, 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); } @@ -717,17 +709,17 @@ static int __mdd_index_delete(const struct lu_env *env, struct mdd_object *pobj, const char *name, int is_dir, struct thandle *handle) { - int rc; - ENTRY; + int rc; + ENTRY; rc = __mdd_index_delete_only(env, pobj, name, handle); - if (rc == 0 && is_dir) { - mdd_write_lock(env, pobj, MOR_TGT_PARENT); - mdo_ref_del(env, pobj, handle); - mdd_write_unlock(env, pobj); - } + 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, @@ -735,23 +727,24 @@ 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 = CLF_EXTRA_FLAGS; - enum changelog_rec_extra_flags crfe = CLFE_UIDGID; + 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(LLOG_CHANGELOG_HDR_SZ + - changelog_rec_offset(crf, crfe) + + 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) @@ -764,8 +757,7 @@ int mdd_declare_changelog_store(const struct lu_env *env, 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); @@ -793,133 +785,44 @@ out_put: return rc; } -struct mdd_changelog_gc { - struct mdd_device *mcgc_mdd; - bool mcgc_found; - __u32 mcgc_maxtime; - __u64 mcgc_maxindexes; - __u32 mcgc_id; -}; - -/* return first registered ChangeLog user idle since too long - * use ChangeLog's user plain LLOG mtime for this */ -static int mdd_changelog_gc_cb(const struct lu_env *env, - struct llog_handle *llh, - struct llog_rec_hdr *hdr, void *data) +int mdd_changelog_write_rec(const struct lu_env *env, + struct llog_handle *loghandle, + struct llog_rec_hdr *r, + struct llog_cookie *cookie, + int idx, struct thandle *th) { - struct llog_changelog_user_rec *rec; - struct mdd_changelog_gc *mcgc = (struct mdd_changelog_gc *)data; - struct mdd_device *mdd = mcgc->mcgc_mdd; - ENTRY; + int rc; - if ((llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN) == 0) - RETURN(-ENXIO); + if (r->lrh_type == CHANGELOG_REC) { + struct mdd_device *mdd; + struct llog_changelog_rec *rec; - rec = container_of(hdr, struct llog_changelog_user_rec, - cur_hdr); + mdd = lu2mdd_dev(loghandle->lgh_ctxt->loc_obd->obd_lu_dev); + rec = container_of(r, struct llog_changelog_rec, cr_hdr); - /* find oldest idle user, based on last record update/cancel time (new - * behavior), or for old user records, last record index vs current - * ChangeLog index. Late users with old record format will be treated - * first as we assume they could be idle since longer - */ - if (rec->cur_time != 0) { - __u32 time_now = (__u32)get_seconds(); - __u32 time_out = rec->cur_time + - mdd->mdd_changelog_max_idle_time; - __u32 idle_time = time_now - rec->cur_time; - - /* treat oldest idle user first, and if no old format user - * has been already selected - */ - if (time_after32(time_now, time_out) && - idle_time > mcgc->mcgc_maxtime && - mcgc->mcgc_maxindexes == 0) { - mcgc->mcgc_maxtime = idle_time; - mcgc->mcgc_id = rec->cur_id; - mcgc->mcgc_found = true; - } - } else { - /* old user record with no idle time stamp, so use empirical - * method based on its current index/position - */ - __u64 idle_indexes; + spin_lock(&mdd->mdd_cl.mc_lock); + rec->cr.cr_index = mdd->mdd_cl.mc_index + 1; + spin_unlock(&mdd->mdd_cl.mc_lock); - idle_indexes = mdd->mdd_cl.mc_index - rec->cur_endrec; + rc = llog_osd_ops.lop_write_rec(env, loghandle, r, + cookie, idx, th); - /* treat user with the oldest/smallest current index first */ - if (idle_indexes >= mdd->mdd_changelog_max_idle_indexes && - idle_indexes > mcgc->mcgc_maxindexes) { - mcgc->mcgc_maxindexes = idle_indexes; - mcgc->mcgc_id = rec->cur_id; - mcgc->mcgc_found = true; + /* + * if current llog is full, we will generate a new + * llog, and since it's actually not an error, let's + * avoid increasing index so that userspace apps + * should not see a gap in the changelog sequence + */ + if (!(rc == -ENOSPC && llog_is_full(loghandle))) { + spin_lock(&mdd->mdd_cl.mc_lock); + ++mdd->mdd_cl.mc_index; + spin_unlock(&mdd->mdd_cl.mc_lock); } - - } - RETURN(0); -} - -/* recover space from long-term inactive ChangeLog users */ -static int mdd_chlg_garbage_collect(void *data) -{ - struct mdd_device *mdd = (struct mdd_device *)data; - struct lu_env *env = NULL; - int rc; - struct llog_ctxt *ctxt; - struct mdd_changelog_gc mcgc = { - .mcgc_mdd = mdd, - .mcgc_found = false, - .mcgc_maxtime = 0, - .mcgc_maxindexes = 0, - }; - ENTRY; - - CDEBUG(D_HA, "%s: ChangeLog garbage collect thread start\n", - mdd2obd_dev(mdd)->obd_name); - - OBD_ALLOC_PTR(env); - if (env == NULL) - GOTO(out, rc = -ENOMEM); - - rc = lu_env_init(env, LCT_MD_THREAD); - if (rc) - GOTO(out, rc); - - for (;;) { - ctxt = llog_get_context(mdd2obd_dev(mdd), - LLOG_CHANGELOG_USER_ORIG_CTXT); - if (ctxt == NULL || - (ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT) == 0) - GOTO(out_env, rc = -ENXIO); - - rc = llog_cat_process(env, ctxt->loc_handle, - mdd_changelog_gc_cb, &mcgc, 0, 0); - if (rc != 0 || mcgc.mcgc_found == false) - break; - llog_ctxt_put(ctxt); - - CWARN("%s: Force deregister of ChangeLog user cl%d idle more " - "than %us\n", mdd2obd_dev(mdd)->obd_name, mcgc.mcgc_id, - mcgc.mcgc_maxtime); - - mdd_changelog_user_purge(env, mdd, mcgc.mcgc_id); - - /* try again to search for another candidate */ - mcgc.mcgc_found = false; - mcgc.mcgc_maxtime = 0; - mcgc.mcgc_maxindexes = 0; + } else { + rc = llog_osd_ops.lop_write_rec(env, loghandle, r, + cookie, idx, th); } -out_env: - if (ctxt != NULL) - llog_ctxt_put(ctxt); - - lu_env_fini(env); - GOTO(out, rc); -out: - if (env) - OBD_FREE_PTR(env); - mdd->mdd_cl.mc_gc_task = NULL; return rc; } @@ -937,7 +840,6 @@ int mdd_changelog_store(const struct lu_env *env, struct mdd_device *mdd, struct llog_ctxt *ctxt; struct thandle *llog_th; int rc; - bool run_gc_task; rec->cr_hdr.lrh_len = llog_data_len(sizeof(*rec) + changelog_rec_varsize(&rec->cr)); @@ -946,13 +848,6 @@ int mdd_changelog_store(const struct lu_env *env, struct mdd_device *mdd, rec->cr_hdr.lrh_type = CHANGELOG_REC; rec->cr.cr_time = cl_time(); - spin_lock(&mdd->mdd_cl.mc_lock); - /* NB: I suppose it's possible llog_add adds out of order wrt cr_index, - * but as long as the MDD transactions are ordered correctly for e.g. - * rename conflicts, I don't think this should matter. */ - rec->cr.cr_index = ++mdd->mdd_cl.mc_index; - spin_unlock(&mdd->mdd_cl.mc_lock); - ctxt = llog_get_context(obd, LLOG_CHANGELOG_ORIG_CTXT); if (ctxt == NULL) return -ENXIO; @@ -961,44 +856,42 @@ int mdd_changelog_store(const struct lu_env *env, struct mdd_device *mdd, if (IS_ERR(llog_th)) GOTO(out_put, rc = PTR_ERR(llog_th)); + OBD_FAIL_TIMEOUT(OBD_FAIL_MDS_CHANGELOG_REORDER, cfs_fail_val); /* nested journal transaction */ 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 (unlikely(mdd->mdd_changelog_gc && (ktime_get_real_seconds() - - mdd->mdd_cl.mc_gc_time > mdd->mdd_changelog_min_gc_interval) && - mdd->mdd_cl.mc_gc_task == NULL && - llog_cat_free_space(ctxt->loc_handle) <= - mdd->mdd_changelog_min_free_cat_entries)) { - CWARN("%s: low on changelog_catalog free entries, starting " - "ChangeLog garbage collection thread\n", obd->obd_name); - - /* indicate further kthread run will occur outside right after - * critical section + 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_task = (struct task_struct *)(-1); - run_gc_task = true; + mdd->mdd_cl.mc_gc_time = ktime_get_real_seconds(); } spin_unlock(&mdd->mdd_cl.mc_lock); - if (run_gc_task) { - struct task_struct *gc_task; - - gc_task = kthread_run(mdd_chlg_garbage_collect, mdd, - "chlg_gc_thread"); - if (IS_ERR(gc_task)) { - CERROR("%s: cannot start ChangeLog garbage collection " - "thread: rc = %ld\n", obd->obd_name, - PTR_ERR(gc_task)); - mdd->mdd_cl.mc_gc_task = NULL; - } else { - CDEBUG(D_HA, "%s: ChangeLog garbage collection thread " - "has started with Pid %d\n", obd->obd_name, - gc_task->pid); - mdd->mdd_cl.mc_gc_task = gc_task; - mdd->mdd_cl.mc_gc_time = ktime_get_real_seconds(); - } - } out_put: llog_ctxt_put(ctxt); if (rc > 0) @@ -1012,12 +905,14 @@ static void mdd_changelog_rec_ext_rename(struct changelog_rec *rec, const struct lu_name *sname) { struct changelog_ext_rename *rnm = changelog_rec_rename(rec); - size_t extsize = sname->ln_namelen + 1; + 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; @@ -1052,6 +947,29 @@ void mdd_changelog_rec_extra_uidgid(struct changelog_rec *rec, 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. @@ -1066,7 +984,7 @@ void mdd_changelog_rec_extra_uidgid(struct changelog_rec *rec, 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, @@ -1083,11 +1001,7 @@ int mdd_changelog_ns_store(const struct lu_env *env, 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); @@ -1100,26 +1014,30 @@ int mdd_changelog_ns_store(const struct lu_env *env, RETURN(-ENOMEM); rec = buf->lb_buf; - crf &= CLF_FLAGMASK; - crf |= CLF_EXTRA_FLAGS; + clf_flags &= CLF_FLAGMASK; + clf_flags |= CLF_EXTRA_FLAGS; - if (uc != NULL && 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; - xflags |= CLFE_UIDGID; + rec->cr.cr_flags = clf_flags; - rec->cr.cr_flags = crf; - - if (crf & CLF_EXTRA_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_type = (__u32)type; @@ -1127,14 +1045,14 @@ int mdd_changelog_ns_store(const struct lu_env *env, 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); + rec->cr.cr_tfid = *mdd_object_fid(target); target->mod_cltime = ktime_get(); } else { fid_zero(&rec->cr.cr_tfid); @@ -1335,7 +1253,7 @@ static inline int mdd_links_del(const struct lu_env *env, /** 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) + * \retval ptr to \a lu_buf (always \a mti_link_buf) */ struct lu_buf *mdd_links_get(const struct lu_env *env, struct mdd_object *mdd_obj) @@ -1420,7 +1338,7 @@ static int mdd_declare_link(const struct lu_env *env, struct lu_attr *la, struct linkea_data *data) { - struct lu_fid tfid = *mdo2fid(c); + struct lu_fid tfid = *mdd_object_fid(c); int rc; if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DANGLING3)) @@ -1449,7 +1367,8 @@ static int mdd_declare_link(const struct lu_env *env, 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; } @@ -1500,8 +1419,8 @@ static int mdd_link(const struct lu_env *env, struct md_object *tgt_obj, /* 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); + rc = mdd_linkea_prepare(env, mdd_sobj, NULL, NULL, + mdd_object_fid(mdd_tobj), lname, 0, 0, ldata); if (rc != 0) GOTO(stop, rc); @@ -1514,7 +1433,7 @@ 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) @@ -1526,7 +1445,7 @@ static int mdd_link(const struct lu_env *env, struct md_object *tgt_obj, GOTO(out_unlock, rc); } - *tfid = *mdo2fid(mdd_sobj); + *tfid = *mdd_object_fid(mdd_sobj); if (OBD_FAIL_CHECK(OBD_FAIL_LFSCK_DANGLING3)) tfid->f_oid = cfs_fail_val; @@ -1547,7 +1466,7 @@ static int mdd_link(const struct lu_env *env, struct md_object *tgt_obj, 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), + mdd_links_add(env, mdd_sobj, mdd_object_fid(mdd_tobj), lname, handle, ldata, 0); EXIT; @@ -1555,8 +1474,8 @@ out_unlock: 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); + mdd_object_fid(mdd_tobj), NULL, + NULL, lname, NULL, handle); stop: rc = mdd_trans_stop(env, mdd, rc, handle); if (is_vmalloc_addr(ldata->ld_buf)) @@ -1573,9 +1492,6 @@ static int mdd_mark_orphan_object(const struct lu_env *env, struct lu_attr *attr = MDD_ENV_VAR(env, la_for_start); int rc; - if (!S_ISDIR(mdd_object_type(obj))) - return 0; - attr->la_valid = LA_FLAGS; attr->la_flags = LUSTRE_ORPHAN_FL; @@ -1591,7 +1507,7 @@ static int mdd_declare_finish_unlink(const struct lu_env *env, struct mdd_object *obj, struct thandle *handle) { - int rc; + int rc; /* Sigh, we do not know if the unlink object will become orphan in * declare phase, but fortunately the flags here does not matter @@ -1604,7 +1520,7 @@ static int mdd_declare_finish_unlink(const struct lu_env *env, if (rc != 0) return rc; - rc = orph_declare_index_insert(env, obj, mdd_object_type(obj), handle); + rc = mdd_orphan_declare_insert(env, obj, mdd_object_type(obj), handle); if (rc != 0) return rc; @@ -1614,7 +1530,7 @@ static int mdd_declare_finish_unlink(const struct lu_env *env, /* caller should take a lock before calling */ int mdd_finish_unlink(const struct lu_env *env, struct mdd_object *obj, struct md_attr *ma, - const struct mdd_object *pobj, + struct mdd_object *pobj, const struct lu_name *lname, struct thandle *th) { @@ -1629,7 +1545,7 @@ int mdd_finish_unlink(const struct lu_env *env, * will be deleted during mdd_close() */ obj->mod_flags |= DEAD_OBJ; if (obj->mod_count) { - rc = __mdd_orphan_add(env, obj, th); + rc = mdd_orphan_insert(env, obj, th); if (rc == 0) CDEBUG(D_HA, "Object "DFID" is inserted into " "orphan list, open count = %d\n", @@ -1643,7 +1559,7 @@ int mdd_finish_unlink(const struct lu_env *env, obj->mod_count); /* mark object as an orphan here, not - * before __mdd_orphan_add() as racing + * 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); @@ -1652,7 +1568,7 @@ int mdd_finish_unlink(const struct lu_env *env, } } else if (!is_dir) { /* old files may not have link ea; ignore errors */ - mdd_links_del(env, obj, mdo2fid(pobj), lname, th); + mdd_links_del(env, obj, mdd_object_fid(pobj), lname, th); } RETURN(rc); @@ -1724,7 +1640,8 @@ 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; @@ -1786,6 +1703,9 @@ static int mdd_unlink(const struct lu_env *env, struct md_object *pobj, 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); @@ -1829,7 +1749,7 @@ 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); @@ -1845,7 +1765,7 @@ static int mdd_unlink(const struct lu_env *env, struct md_object *pobj, rc = mdo_ref_del(env, mdd_cobj, handle); if (rc != 0) { __mdd_index_insert_only(env, mdd_pobj, - mdo2fid(mdd_cobj), + mdd_object_fid(mdd_cobj), mdd_object_type(mdd_cobj), name, handle); GOTO(cleanup, rc); @@ -1871,7 +1791,7 @@ static int mdd_unlink(const struct lu_env *env, struct md_object *pobj, /* Enough for only unlink the entry */ if (unlikely(mdd_cobj == NULL)) - GOTO(stop, rc); + GOTO(cleanup, rc); if (cattr->la_nlink > 0 || mdd_cobj->mod_count > 0) { /* update ctime of an unlinked file only if it is still @@ -1916,8 +1836,8 @@ cleanup: rc = mdd_changelog_ns_store(env, mdd, is_dir ? CL_RMDIR : CL_UNLINK, cl_flags, - mdd_cobj, mdo2fid(mdd_pobj), NULL, NULL, lname, NULL, - handle); + mdd_cobj, mdd_object_fid(mdd_pobj), NULL, NULL, + lname, NULL, handle); } stop: @@ -2001,7 +1921,8 @@ static int mdd_create_data(const struct lu_env *env, 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); @@ -2015,7 +1936,8 @@ static int mdd_create_data(const struct lu_env *env, if (rc) GOTO(stop, rc); - rc = mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, son, handle); + rc = mdd_changelog_data_store(env, mdd, CL_LAYOUT, 0, son, handle, + NULL); stop: rc = mdd_trans_stop(env, mdd, rc, handle); @@ -2037,8 +1959,8 @@ static int mdd_declare_object_initialize(const struct lu_env *env, if (!S_ISDIR(attr->la_mode)) RETURN(0); - rc = mdo_declare_index_insert(env, child, mdo2fid(child), S_IFDIR, - dot, handle); + rc = mdo_declare_index_insert(env, child, mdd_object_fid(child), + S_IFDIR, dot, handle); if (rc != 0) RETURN(rc); @@ -2046,8 +1968,8 @@ static int mdd_declare_object_initialize(const struct lu_env *env, if (rc != 0) RETURN(rc); - rc = mdo_declare_index_insert(env, child, mdo2fid(parent), S_IFDIR, - dotdot, handle); + rc = mdo_declare_index_insert(env, child, mdd_object_fid(parent), + S_IFDIR, dotdot, handle); RETURN(rc); } @@ -2055,16 +1977,16 @@ 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 = 0; ENTRY; 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), + /* Add "." and ".." for newly created dir */ + mdo_ref_add(env, child, handle); + rc = __mdd_index_insert_only(env, child, mdd_object_fid(child), S_IFDIR, dot, handle); if (rc == 0) rc = __mdd_index_insert_only(env, child, pfid, S_IFDIR, @@ -2137,8 +2059,7 @@ static int mdd_create_sanity_check(const struct lu_env *env, spec->u.sp_ea.eadata != NULL && spec->u.sp_ea.eadatalen > 0) { const struct lmv_user_md *lum = spec->u.sp_ea.eadata; - if (le32_to_cpu(lum->lum_magic) != LMV_USER_MAGIC && - le32_to_cpu(lum->lum_magic) != LMV_USER_MAGIC_SPECIFIC && + if (!lmv_user_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, " @@ -2155,12 +2076,24 @@ static int mdd_create_sanity_check(const struct lu_env *env, 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, CAP_FSETID)) { + cattr->la_mode &= ~S_ISGID; + cattr->la_valid |= LA_MODE; } } @@ -2210,18 +2143,24 @@ static int mdd_declare_create_object(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; +#ifdef CONFIG_LUSTRE_FS_POSIX_ACL + /* ldiskfs OSD needs this information for credit allocation */ + if (def_acl_buf) + hint->dah_acl_len = def_acl_buf->lb_len; +#endif rc = mdd_declare_create_object_internal(env, p, c, attr, handle, spec, hint); if (rc) GOTO(out, rc); -#ifdef CONFIG_FS_POSIX_ACL - if (def_acl_buf->lb_len > 0 && S_ISDIR(attr->la_mode)) { +#ifdef CONFIG_LUSTRE_FS_POSIX_ACL + 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, @@ -2230,7 +2169,7 @@ static int mdd_declare_create_object(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); @@ -2246,14 +2185,24 @@ static int mdd_declare_create_object(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))) { 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, + LU_XATTR_CREATE, 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)) { @@ -2277,6 +2226,16 @@ static int mdd_declare_create_object(const struct lu_env *env, if (rc < 0) GOTO(out, rc); } + + if (spec->sp_cr_file_encctx != NULL) { + buf = mdd_buf_get_const(env, spec->sp_cr_file_encctx, + spec->sp_cr_file_encctx_size); + rc = mdo_declare_xattr_set(env, c, buf, + LL_XATTR_NAME_ENCRYPTION_CONTEXT, 0, + handle); + if (rc < 0) + GOTO(out, rc); + } out: return rc; } @@ -2290,12 +2249,13 @@ 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_create_object(env, mdd, p, c, attr, handle, spec, - def_acl_buf, acl_buf, hint); + def_acl_buf, acl_buf, hsm_buf, hint); if (rc) GOTO(out, rc); @@ -2306,14 +2266,16 @@ 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); + rc = mdo_declare_index_insert(env, p, mdd_object_fid(c), + attr->la_mode, name->ln_name, + handle); if (rc != 0) return rc; @@ -2327,7 +2289,12 @@ 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; } @@ -2340,6 +2307,7 @@ static int mdd_acl_init(const struct lu_env *env, struct mdd_object *pobj, struct lu_buf *acl_buf) { int rc; + ENTRY; if (S_ISLNK(la->la_mode)) { @@ -2348,14 +2316,17 @@ 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); mdd_read_unlock(env, pobj); if (rc > 0) { + /* ACL buffer size is not enough, need realloc */ + if (rc > acl_buf->lb_len) + RETURN(-ERANGE); + /* If there are default ACL, fix mode/ACL by default ACL */ def_acl_buf->lb_len = rc; - LASSERT(def_acl_buf->lb_len <= acl_buf->lb_len); memcpy(acl_buf->lb_buf, def_acl_buf->lb_buf, rc); acl_buf->lb_len = rc; rc = __mdd_fix_mode_acl(env, acl_buf, &la->la_mode); @@ -2384,13 +2355,14 @@ 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) + struct thandle *handle, bool initsecctx) { const struct lu_buf *buf; int rc; - mdd_write_lock(env, son, MOR_TGT_CHILD); + mdd_write_lock(env, son, DT_TGT_CHILD); rc = mdd_create_object_internal(env, NULL, son, attr, handle, spec, hint); if (rc) @@ -2400,8 +2372,8 @@ static int mdd_create_object(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, mdd_object_fid(pobj), son, attr, + handle); if (rc != 0) GOTO(err_destroy, rc); @@ -2427,13 +2399,26 @@ static int mdd_create_object(const struct lu_env *env, struct mdd_object *pobj, 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); + XATTR_NAME_LOV, + LU_XATTR_CREATE, 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); } -#ifdef CONFIG_FS_POSIX_ACL +#ifdef CONFIG_LUSTRE_FS_POSIX_ACL if (def_acl_buf != NULL && def_acl_buf->lb_len > 0 && S_ISDIR(attr->la_mode)) { /* set default acl */ @@ -2454,24 +2439,20 @@ static int mdd_create_object(const struct lu_env *env, struct mdd_object *pobj, #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); 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, - 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) { + if (initsecctx && 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, @@ -2480,6 +2461,16 @@ static int mdd_create_object(const struct lu_env *env, struct mdd_object *pobj, GOTO(err_initlized, rc); } + if (spec->sp_cr_file_encctx != NULL) { + buf = mdd_buf_get_const(env, spec->sp_cr_file_encctx, + spec->sp_cr_file_encctx_size); + rc = mdo_xattr_set(env, son, buf, + LL_XATTR_NAME_ENCRYPTION_CONTEXT, 0, + handle); + if (rc < 0) + GOTO(err_initlized, rc); + } + err_initlized: if (unlikely(rc != 0)) { int rc2; @@ -2585,25 +2576,27 @@ stop: * \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 mdd_thread_info *info = mdd_env_info(env); - struct lu_attr *la = &info->mti_la_for_fix; - struct mdd_object *mdd_pobj = md2mdd_obj(pobj); - struct mdd_object *son = md2mdd_obj(child); - struct mdd_device *mdd = mdo2mdd(pobj); - struct lu_attr *attr = &ma->ma_attr; - struct thandle *handle; - struct lu_attr *pattr = &info->mti_pattr; - struct lu_buf acl_buf; - struct lu_buf def_acl_buf; - struct linkea_data *ldata = &info->mti_link_data; - const char *name = lname->ln_name; + struct mdd_thread_info *info = mdd_env_info(env); + struct lu_attr *la = &info->mti_la_for_fix; + struct mdd_object *mdd_pobj = md2mdd_obj(pobj); + struct mdd_object *son = md2mdd_obj(child); + struct mdd_device *mdd = mdo2mdd(pobj); + struct lu_attr *attr = &ma->ma_attr; + struct thandle *handle; + 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; - int rc; - int rc2; + int acl_size = LUSTRE_POSIX_ACL_MAX_SIZE_OLD; + int rc, rc2; + ENTRY; rc = mdd_la_get(env, mdd_pobj, pattr); @@ -2622,15 +2615,39 @@ static int mdd_create(const struct lu_env *env, struct md_object *pobj, if (IS_ERR(handle)) GOTO(out_free, rc = PTR_ERR(handle)); - lu_buf_check_and_alloc(&info->mti_xattr_buf, - mdd->mdd_dt_conf.ddp_max_ea_size); - acl_buf = info->mti_xattr_buf; - def_acl_buf.lb_buf = info->mti_key; - def_acl_buf.lb_len = sizeof(info->mti_key); +use_bigger_buffer: + acl_buf = *lu_buf_check_and_alloc(&info->mti_xattr_buf, acl_size); + if (!acl_buf.lb_buf) + GOTO(out_stop, rc = -ENOMEM); + /* mti_big_buf is also used down below in mdd_changelog_ns_store(), + * but def_acl_buf is finished with it before then + */ + def_acl_buf = *lu_buf_check_and_alloc(&info->mti_big_buf, acl_size); + if (!def_acl_buf.lb_buf) + GOTO(out_stop, rc = -ENOMEM); + rc = mdd_acl_init(env, mdd_pobj, attr, &def_acl_buf, &acl_buf); + if (unlikely(rc == -ERANGE && + acl_size == LUSTRE_POSIX_ACL_MAX_SIZE_OLD)) { + /* use maximum-sized xattr buffer for too-big default ACL */ + acl_size = min_t(unsigned int, mdd->mdd_dt_conf.ddp_max_ea_size, + XATTR_SIZE_MAX); + goto use_bigger_buffer; + } 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)) + lmu->lum_stripe_count = 0; + } + mdd_object_make_hint(env, mdd_pobj, son, attr, spec, hint); memset(ldata, 0, sizeof(*ldata)); @@ -2646,9 +2663,18 @@ 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); + &hsm_buf, hint); if (rc) GOTO(out_stop, rc); @@ -2657,23 +2683,23 @@ static int mdd_create(const struct lu_env *env, struct md_object *pobj, GOTO(out_stop, rc); rc = mdd_create_object(env, mdd_pobj, son, attr, spec, &acl_buf, - &def_acl_buf, hint, handle); + &def_acl_buf, &hsm_buf, hint, handle, true); if (rc != 0) GOTO(out_stop, rc); if (unlikely(spec->sp_cr_flags & MDS_OPEN_VOLATILE)) { - mdd_write_lock(env, son, MOR_TGT_CHILD); + mdd_write_lock(env, son, DT_TGT_CHILD); son->mod_flags |= VOLATILE_OBJ; - rc = __mdd_orphan_add(env, son, handle); + rc = mdd_orphan_insert(env, son, handle); GOTO(out_volatile, rc); } else { - rc = __mdd_index_insert(env, mdd_pobj, mdo2fid(son), + rc = __mdd_index_insert(env, mdd_pobj, mdd_object_fid(son), attr->la_mode, name, handle); if (rc != 0) GOTO(err_created, rc); - mdd_links_add(env, son, mdo2fid(mdd_pobj), lname, handle, - ldata, 1); + mdd_links_add(env, son, mdd_object_fid(mdd_pobj), lname, + handle, ldata, 1); /* update parent directory mtime/ctime */ *la = *attr; @@ -2687,7 +2713,7 @@ static int mdd_create(const struct lu_env *env, struct md_object *pobj, err_insert: if (rc != 0) { 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), @@ -2696,7 +2722,7 @@ err_insert: 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. */ @@ -2723,14 +2749,14 @@ out_volatile: mdd_write_unlock(env, son); } - if (rc == 0 && fid_is_namespace_visible(mdo2fid(son)) && + if (rc == 0 && fid_is_namespace_visible(mdd_object_fid(son)) && likely((spec->sp_cr_flags & MDS_OPEN_VOLATILE) == 0)) rc = mdd_changelog_ns_store(env, mdd, S_ISDIR(attr->la_mode) ? CL_MKDIR : S_ISREG(attr->la_mode) ? CL_CREATE : S_ISLNK(attr->la_mode) ? CL_SOFTLINK : CL_MKNOD, - 0, son, mdo2fid(mdd_pobj), NULL, NULL, lname, - NULL, handle); + 0, son, mdd_object_fid(mdd_pobj), NULL, NULL, + lname, NULL, handle); out_stop: rc2 = mdd_trans_stop(env, mdd, rc, handle); if (rc == 0) { @@ -2748,6 +2774,9 @@ out_free: /* 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, @@ -2755,49 +2784,6 @@ out_free: return rc; } -/* - * Get locks on parents in proper order - * RETURN: < 0 - error, rename_order if successful - */ -enum rename_order { - MDD_RN_SAME, - MDD_RN_SRCTGT, - MDD_RN_TGTSRC -}; - -static int mdd_rename_order(const struct lu_env *env, - struct mdd_device *mdd, - struct mdd_object *src_pobj, - const struct lu_attr *pattr, - struct mdd_object *tgt_pobj) -{ - /* order of locking, 1 - tgt-src, 0 - src-tgt*/ - int rc; - ENTRY; - - if (src_pobj == tgt_pobj) - RETURN(MDD_RN_SAME); - - /* compared the parent child relationship of src_p&tgt_p */ - if (lu_fid_eq(&mdd->mdd_root_fid, mdo2fid(src_pobj))){ - rc = MDD_RN_SRCTGT; - } 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); - if (rc == -EREMOTE) - rc = 0; - - if (rc == 1) - rc = MDD_RN_TGTSRC; - else if (rc == 0) - rc = MDD_RN_SRCTGT; - } - - RETURN(rc); -} - /* has not mdd_write{read}_lock on any obj yet. */ static int mdd_rename_sanity_check(const struct lu_env *env, struct mdd_object *src_pobj, @@ -2862,28 +2848,27 @@ static int mdd_declare_rename(const struct lu_env *env, struct linkea_data *ldata, struct thandle *handle) { - struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix; + struct lu_attr *la = &mdd_env_info(env)->mti_la_for_fix; int rc; LASSERT(ma->ma_attr.la_valid & LA_CTIME); la->la_ctime = la->la_mtime = ma->ma_attr.la_ctime; - LASSERT(mdd_spobj); - LASSERT(mdd_tpobj); - LASSERT(mdd_sobj); + LASSERT(mdd_spobj); + LASSERT(mdd_tpobj); + LASSERT(mdd_sobj); - /* name from source dir */ - rc = mdo_declare_index_delete(env, mdd_spobj, sname->ln_name, handle); - if (rc) - return rc; + /* name from source dir */ + rc = mdo_declare_index_delete(env, mdd_spobj, sname->ln_name, handle); + if (rc) + return rc; - /* .. from source child */ - if (S_ISDIR(mdd_object_type(mdd_sobj))) { - /* source child can be directory, - * counted by source dir's nlink */ - rc = mdo_declare_ref_del(env, mdd_spobj, handle); - if (rc) - return rc; + /* .. from source child */ + if (S_ISDIR(mdd_object_type(mdd_sobj))) { + /* source child can be directory, count by source dir's nlink */ + rc = mdo_declare_ref_del(env, mdd_spobj, handle); + if (rc) + return rc; if (mdd_spobj != mdd_tpobj) { rc = mdo_declare_index_delete(env, mdd_sobj, dotdot, handle); @@ -2891,7 +2876,7 @@ static int mdd_declare_rename(const struct lu_env *env, return rc; rc = mdo_declare_index_insert(env, mdd_sobj, - mdo2fid(mdd_tpobj), + mdd_object_fid(mdd_tpobj), S_IFDIR, dotdot, handle); if (rc != 0) return rc; @@ -2923,7 +2908,7 @@ static int mdd_declare_rename(const struct lu_env *env, return rc; /* new name */ - rc = mdo_declare_index_insert(env, mdd_tpobj, mdo2fid(mdd_sobj), + rc = mdo_declare_index_insert(env, mdd_tpobj, mdd_object_fid(mdd_sobj), mdd_object_type(mdd_sobj), tname->ln_name, handle); if (rc != 0) @@ -2963,13 +2948,24 @@ 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; return rc; } +static int mdd_migrate_object(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 *sname, + const struct lu_name *tname, + struct md_op_spec *spec, + struct md_attr *ma); + /* src object can be remote that is why we use only fid and type of object */ static int mdd_rename(const struct lu_env *env, struct md_object *src_pobj, struct md_object *tgt_pobj, @@ -2991,8 +2987,8 @@ static int mdd_rename(const struct lu_env *env, struct lu_attr *tpattr = MDD_ENV_VAR(env, tpattr); struct thandle *handle; struct linkea_data *ldata = &mdd_env_info(env)->mti_link_data; - const struct lu_fid *tpobj_fid = mdo2fid(mdd_tpobj); - const struct lu_fid *spobj_fid = mdo2fid(mdd_spobj); + const struct lu_fid *tpobj_fid = mdd_object_fid(mdd_tpobj); + const struct lu_fid *spobj_fid = mdd_object_fid(mdd_spobj); bool is_dir; bool tobj_ref = 0; bool tobj_locked = 0; @@ -3000,6 +2996,9 @@ 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); @@ -3011,6 +3010,31 @@ static int mdd_rename(const struct lu_env *env, if (rc) GOTO(out_pending, rc); + /* if rename is cross MDTs, migrate symlink if it doesn't have other + * hard links, and target doesn't exist. + */ + if (mdd_object_remote(mdd_sobj) && S_ISLNK(cattr->la_mode) && + cattr->la_nlink == 1 && !tobj) { + struct md_op_spec *spec = &mdd_env_info(env)->mti_spec; + struct lu_device *ld = &mdd->mdd_md_dev.md_lu_dev; + struct lu_fid tfid; + + rc = ld->ld_ops->ldo_fid_alloc(env, ld, &tfid, &tgt_pobj->mo_lu, + NULL); + if (rc < 0) + GOTO(out_pending, rc); + + mdd_tobj = mdd_object_find(env, mdd, &tfid); + if (IS_ERR(mdd_tobj)) + GOTO(out_pending, rc = PTR_ERR(mdd_tobj)); + + memset(spec, 0, sizeof(*spec)); + rc = mdd_migrate_object(env, mdd_spobj, mdd_tpobj, mdd_sobj, + mdd_tobj, lsname, ltname, spec, ma); + mdd_object_put(env, mdd_tobj); + GOTO(out_pending, rc); + } + rc = mdd_la_get(env, mdd_spobj, pattr); if (rc) GOTO(out_pending, rc); @@ -3039,11 +3063,6 @@ 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)); @@ -3106,13 +3125,13 @@ static int mdd_rename(const struct lu_env *env, GOTO(fixup_tpobj, rc); /* Update the linkEA for the source object */ - 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, ldata, - 0, 0); + mdd_write_lock(env, mdd_sobj, DT_SRC_CHILD); + rc = mdd_links_rename(env, mdd_sobj, mdd_object_fid(mdd_spobj), + lsname, mdd_object_fid(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), + mdd_links_add(env, mdd_sobj, mdd_object_fid(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 @@ -3125,7 +3144,7 @@ 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 */ @@ -3226,9 +3245,9 @@ fixup_tpobj: } rc2 = __mdd_index_insert(env, mdd_tpobj, - mdo2fid(mdd_tobj), - mdd_object_type(mdd_tobj), - tname, handle); + mdd_object_fid(mdd_tobj), + mdd_object_type(mdd_tobj), + tname, handle); if (rc2 != 0) CWARN("tp obj fix error: rc = %d\n", rc2); } @@ -3276,270 +3295,93 @@ 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 *newparent, - 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 = { NULL }; - 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", + mdd_obj_dev_name(sobj), + PFID(mdd_object_fid(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(newparent))); - /* update to the new parent fid */ - linkea_entry_pack(ldata.ld_lee, &lname, - mdd_object_fid(newparent)); - 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 *newparent, - struct mdd_object *child, - const char *name, int namelen, - struct thandle *handle) -{ - return mdd_linkea_update_child_internal(env, parent, newparent, - child, name, - namelen, handle, true); -} - -static int mdd_linkea_update_child(const struct lu_env *env, - struct mdd_object *parent, - struct mdd_object *newparent, - struct mdd_object *child, - const char *name, int namelen, - struct thandle *handle) +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) { - return mdd_linkea_update_child_internal(env, parent, newparent, - child, name, - namelen, handle, false); -} + struct mdd_thread_info *info = mdd_env_info(env); + char *xname; + struct lu_buf list_xbuf; + struct lu_buf cbxbuf; + struct lu_buf xbuf = { NULL }; + int list_xsize; + int xlen; + int rem; + int xsize; + int 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 linkea_data *ldata, - struct thandle *handle, - int declare) -{ - struct mdd_thread_info *info = mdd_env_info(env); - int count; - int rc = 0; ENTRY; - LASSERT(ldata->ld_buf != NULL); - LASSERT(ldata->ld_leh != NULL); - - /* If it is mulitple links file, we need update the name entry for - * all parent */ - 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); - 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; - } - - 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; - } - - 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; - } - - 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))); - - 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); - - 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); - - rc = mdo_declare_ref_add(env, mdd_tobj, handle); - if (rc) - GOTO(next_put, rc); - - rc = mdo_declare_ref_del(env, mdd_sobj, handle); - if (rc) - GOTO(next_put, rc); - } else { - char *tmp_name = info->mti_key; - - if (lname.ln_namelen >= sizeof(info->mti_key)) { - /* lnamelen is too big(> NAME_MAX + 16), - * something wrong about this linkea, let's - * skip it */ - CWARN("%s: the name %.*s is too long under " - DFID"\n", mdd2obd_dev(mdd)->obd_name, - lname.ln_namelen, lname.ln_name, - PFID(&fid)); - goto next_put; - } - - /* Note: lname might be without \0 at the end, see - * linkea_entry_unpack(), let's add extra \0 by - * snprintf */ - snprintf(tmp_name, sizeof(info->mti_key), "%.*s", - lname.ln_namelen, lname.ln_name); - lname.ln_name = tmp_name; - - /* Let's check if this linkEA still valid, before - * it might be packed into the RPC buffer. */ - rc = mdd_lookup(env, &pobj->mod_obj, &lname, - &info->mti_fid, NULL); - if (rc < 0 || !lu_fid_eq(&info->mti_fid, - mdd_object_fid(mdd_sobj))) - GOTO(next_put, rc == -ENOENT ? 0 : rc); - - rc = __mdd_index_delete(env, pobj, tmp_name, 0, handle); - if (rc != 0) - GOTO(next_put, rc); - - rc = __mdd_index_insert(env, pobj, - mdd_object_fid(mdd_tobj), - mdd_object_type(mdd_tobj), - tmp_name, handle); - if (rc != 0) - GOTO(next_put, rc); - - 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); - - 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; - - ldata->ld_lee = (struct link_ea_entry *)((char *)ldata->ld_lee + - ldata->ld_reclen); - } - - RETURN(rc); -} - -static int mdd_migrate_xattrs(const struct lu_env *env, - struct mdd_object *mdd_sobj, - struct mdd_object *mdd_tobj) -{ - 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; - - /* retrieve xattr list from the old object */ - list_xsize = mdo_xattr_list(env, mdd_sobj, &LU_BUF_NULL); - if (list_xsize == -ENODATA) - return 0; + /* retrieve xattr list from the old object */ + list_xsize = mdo_xattr_list(env, sobj, &LU_BUF_NULL); + if (list_xsize == -ENODATA) + 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); + 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; @@ -3547,981 +3389,1542 @@ static int mdd_migrate_xattrs(const struct lu_env *env, 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); + 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); + 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); - -again: - rc = mdo_xattr_set(env, mdd_tobj, &xbuf, xname, 0, handle); - if (rc == -EEXIST) - GOTO(stop_trans, rc = 0); - + cbxbuf = xbuf; + cbxbuf.lb_len = xsize; +repeat: + rc = cb(env, tobj, &cbxbuf, xname, 0, handle); if (unlikely(rc == -ENOSPC && strcmp(xname, XATTR_NAME_LINK) == 0)) { rc = linkea_overflow_shrink( - (struct linkea_data *)(xbuf.lb_buf)); + (struct linkea_data *)(cbxbuf.lb_buf)); if (likely(rc > 0)) { - xbuf.lb_len = rc; - goto again; + cbxbuf.lb_len = rc; + goto repeat; } } - if (rc != 0) - GOTO(stop_trans, rc); -stop_trans: - rc = 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 linkea_data *ldata, - 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_create_object_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; - } else if (S_ISDIR(la->la_mode) && ldata != NULL) { - rc = mdd_declare_links_add(env, mdd_tobj, handle, ldata); - 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, mdd_object_fid(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; - 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, - const struct lu_name *lname, - 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 = { NULL }; - struct lu_buf link_buf = { NULL }; - struct lu_buf mgr_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; - struct linkea_data *ldata = &mdd_env_info(env)->mti_link_data; - 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)) { - const struct lu_buf *buf; + struct mdd_device *mdd = mdo2mdd(&sobj->mod_obj); + struct mdd_object *pobj; + int rc; - 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; - memset(link_buf.lb_buf, 0, link_buf.lb_len); - 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; - } - } else if (S_ISDIR(la->la_mode)) { - rc = mdd_links_read_with_rec(env, mdd_sobj, ldata); - if (rc == -ENODATA) { - /* ignore the non-linkEA error */ - ldata = NULL; - rc = 0; - } - if (rc < 0) - RETURN(rc); - } + ENTRY; - mgr_easize = lmv_mds_md_size(2, LMV_MAGIC_V1); - lu_buf_check_and_alloc(&info->mti_xattr_buf, mgr_easize); - mgr_buf.lb_buf = info->mti_xattr_buf.lb_buf; - mgr_buf.lb_len = mgr_easize; - mgr_ea = mgr_buf.lb_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)); - - mdd_object_make_hint(env, mdd_pobj, mdd_tobj, la, spec, hint); + LASSERT(lu_name_is_valid(lname)); - handle = mdd_trans_create(env, mdd); - if (IS_ERR(handle)) - GOTO(out_free, rc = PTR_ERR(handle)); + /* 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); - /* 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, mgr_buf.lb_buf, ldata, handle); - if (rc != 0) - GOTO(stop_trans, rc); + CDEBUG(D_INFO, "update "DFID"/"DNAME":"DFID"\n", + PFID(fid), PNAME(lname), PFID(mdd_object_fid(tobj))); - rc = mdd_trans_start(env, mdd, handle); - if (rc != 0) - GOTO(stop_trans, rc); + 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)); + } - /* don't set nlink from the original object */ - la->la_valid &= ~LA_NLINK; + if (!mdd_object_exists(pobj)) { + CDEBUG(D_INFO, DFID" doesn't exist\n", PFID(fid)); + mdd_object_put(env, pobj); + RETURN(-ENOENT); + } - /* create the target object */ - rc = mdd_create_object(env, mdd_pobj, mdd_tobj, la, spec, NULL, NULL, - hint, 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, mdd_object_fid(tobj), + mdd_object_type(sobj), + lname->ln_name, handle); + mdd_write_unlock(env, pobj); + mdd_object_put(env, pobj); + if (rc) + RETURN(rc); - if (S_ISDIR(la->la_mode) && ldata != NULL) { - rc = mdd_links_write(env, mdd_tobj, ldata, 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. */ - rc = mdo_xattr_set(env, mdd_sobj, &mgr_buf, XATTR_NAME_LMV, 0, handle); - 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; - rc = mdo_attr_set(env, mdd_sobj, la_flag, handle); -stop_trans: - if (handle != NULL) - rc = 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 result; - struct lu_dirent *ent; - int rc; - ENTRY; - - OBD_ALLOC(ent, NAME_MAX + sizeof(*ent) + 1); - if (ent == NULL) - RETURN(-ENOMEM); - - 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); - if (IS_ERR(it)) - GOTO(out_ent, rc = PTR_ERR(it)); - - 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 is_dir; - bool target_exist = false; - - len = iops->key_size(env, it); - if (len == 0) - goto next; + struct lu_seq_range *range = &mdd_env_info(env)->mti_range; + struct seq_server_site *ss; + int rc; - 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; - } + ss = mdd->mdd_md_dev.md_lu_dev.ld_site->ld_seq_site; - fid_le_to_cpu(&ent->lde_fid, &ent->lde_fid); + range->lsr_flags = LU_SEQ_RANGE_MDT; + rc = fld_server_lookup(env, ss->ss_server_fld, fid->f_seq, range); + if (rc) + return 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; + *mdt_index = range->lsr_index; - child = mdd_object_find(env, mdd, &ent->lde_fid); - if (IS_ERR(child)) - GOTO(out, rc = PTR_ERR(child)); + return 0; +} - /* child may not exist, but lu_object_attr will assert this, - * get type from loh_attr directly */ - is_dir = S_ISDIR(child->mod_obj.mo_lu.lo_header->loh_attr); +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; - mdd_write_lock(env, child, MOR_SRC_CHILD); + ENTRY; - snprintf(name, ent->lde_namelen + 1, "%s", ent->lde_name); + /* ignore tobj */ + if (lu_fid_eq(tpfid, fid) && tname->ln_namelen == lname->ln_namelen && + !strcmp(tname->ln_name, lname->ln_name)) + return 0; - /* 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; + rc = mdd_fld_lookup(env, mdd, fid, &link_mdt_index); + if (rc) + RETURN(rc); - rc = dt_lookup(env, dt_tobj, (struct dt_rec *)fid, - (struct dt_key *)name); - if (unlikely(rc == 0)) - target_exist = true; - } + RETURN(link_mdt_index == source_mdt_index); +} - handle = mdd_trans_create(env, mdd); - if (IS_ERR(handle)) - GOTO(out_put, 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, - child->mod_obj.mo_lu.lo_header->loh_attr, - name, handle); - if (rc != 0) - GOTO(out_put, rc); +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; - if (is_dir) { - rc = mdo_declare_ref_add(env, mdd_tobj, handle); - if (rc != 0) - GOTO(out_put, rc); - } - } + if (!ldata->ld_buf) + return 0; - rc = mdo_declare_index_delete(env, mdd_sobj, 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_del(env, mdd_sobj, 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; - /* Update .. for child */ - rc = mdo_declare_index_delete(env, child, dotdot, - handle); - if (rc != 0) - GOTO(out_put, rc); + CDEBUG(D_INFO, DFID"/"DNAME"\n", PFID(&fid), PNAME(&lname)); - rc = mdo_declare_index_insert(env, child, - mdd_object_fid(mdd_tobj), - S_IFDIR, dotdot, handle); - if (rc != 0) - GOTO(out_put, rc); - } + rc = cb(env, sobj, tobj, tname, tpfid, &lname, &fid, opaque, + handle); + } - rc = mdd_linkea_declare_update_child(env, mdd_sobj,mdd_tobj, - child, name, - strlen(name), - handle); - if (rc != 0) - GOTO(out_put, rc); + return 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); - } +/** + * 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 mdd_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 *sname, + const struct lu_name *tname, + const struct lu_attr *attr, + struct linkea_data *ldata) +{ + __u32 source_mdt_index; + int rc; - if (likely(!target_exist)) { - rc = __mdd_index_insert(env, mdd_tobj, &ent->lde_fid, - child->mod_obj.mo_lu.lo_header->loh_attr, name, - handle); - if (rc != 0) - GOTO(out_put, rc); - } + ENTRY; - rc = __mdd_index_delete(env, mdd_sobj, name, is_dir, handle); - if (rc != 0) - GOTO(out_put, rc); + memset(ldata, 0, sizeof(*ldata)); + rc = mdd_linkea_prepare(env, sobj, mdd_object_fid(spobj), sname, + mdd_object_fid(tpobj), tname, 1, 0, ldata); + if (rc) + RETURN(rc); - if (is_dir) { - rc = __mdd_index_delete_only(env, child, dotdot, - handle); - if (rc != 0) - GOTO(out_put, 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); - rc = __mdd_index_insert_only(env, child, - mdd_object_fid(mdd_tobj), S_IFDIR, - dotdot, handle); - if (rc != 0) - GOTO(out_put, rc); - } + /* If there are still links locally, don't migrate this file */ + LASSERT(ldata->ld_leh != NULL); - rc = mdd_linkea_update_child(env, mdd_sobj, mdd_tobj, - child, name, - strlen(name), handle); + /* + * 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); -out_put: - mdd_write_unlock(env, child); - mdd_object_put(env, child); - rc = 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_fld_lookup(env, mdd, mdd_object_fid(sobj), &source_mdt_index); + if (rc) + RETURN(rc); - if (result == -ESTALE) - goto next; - } while (result == 0); -out: - iops->put(env, it); - iops->fini(env, it); -out_ent: - OBD_FREE(ent, NAME_MAX + sizeof(*ent) + 1); + rc = mdd_iterate_linkea(env, sobj, NULL, tname, mdd_object_fid(tpobj), + ldata, &source_mdt_index, NULL, + mdd_is_link_on_source_mdt); 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, - const struct lu_name *child_name, - struct linkea_data *ldata, - struct thandle *handle) -{ - return mdd_update_linkea_internal(env, mdd_pobj, mdd_sobj, mdd_tobj, - child_name, ldata, handle, 1); -} - -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, - const struct lu_name *child_name, - struct linkea_data *ldata, - struct thandle *handle) -{ - return mdd_update_linkea_internal(env, mdd_pobj, mdd_sobj, mdd_tobj, - child_name, ldata, handle, 0); -} - -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 linkea_data *ldata, - struct thandle *handle) +static int mdd_declare_migrate_update(const struct lu_env *env, + struct mdd_object *spobj, + struct mdd_object *tpobj, + struct mdd_object *obj, + const struct lu_name *sname, + const struct lu_name *tname, + struct lu_attr *attr, + struct lu_attr *spattr, + struct lu_attr *tpattr, + struct linkea_data *ldata, + struct md_attr *ma, + struct thandle *handle) { - struct mdd_device *mdd = mdo2mdd(&mdd_sobj->mod_obj); - struct lu_attr *la_flag = MDD_ENV_VAR(env, tattr); + struct mdd_thread_info *info = mdd_env_info(env); + struct lu_attr *la = &info->mti_la_for_fix; int rc; - /* Revert IMMUTABLE flag */ - la_flag->la_valid = LA_FLAGS; - la_flag->la_flags = la->la_flags & ~LUSTRE_IMMUTABLE_FL; - rc = mdo_declare_attr_set(env, mdd_sobj, la_flag, handle); - if (rc != 0) - return rc; - - /* delete entry from source dir */ - rc = mdo_declare_index_delete(env, mdd_pobj, lname->ln_name, handle); - if (rc != 0) + rc = mdo_declare_index_delete(env, spobj, sname->ln_name, handle); + if (rc) return rc; - if (ldata->ld_buf != NULL) { - rc = mdd_declare_update_linkea(env, mdd_pobj, mdd_sobj, - mdd_tobj, lname, ldata, handle); - if (rc != 0) + if (S_ISDIR(attr->la_mode)) { + rc = mdo_declare_ref_del(env, spobj, handle); + if (rc) return rc; } - 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_index_insert(env, tpobj, mdd_object_fid(obj), + attr->la_mode & S_IFMT, + tname->ln_name, handle); + if (rc) + return rc; + + rc = mdd_declare_links_add(env, obj, 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; + } + + return rc; +} + +static int mdd_declare_migrate_create(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 *sname, + const struct lu_name *tname, + struct lu_attr *spattr, + struct lu_attr *tpattr, + struct lu_attr *attr, + struct lu_buf *sbuf, + struct linkea_data *ldata, + struct md_attr *ma, + struct md_op_spec *spec, + struct dt_allocation_hint *hint, + struct thandle *handle) +{ + struct mdd_thread_info *info = mdd_env_info(env); + struct md_layout_change *mlc = &info->mti_mlc; + struct lmv_mds_md_v1 *lmv = sbuf->lb_buf; + int rc; + + ENTRY; + + if (S_ISDIR(attr->la_mode)) { + struct lmv_user_md *lum = spec->u.sp_ea.eadata; + + mlc->mlc_opc = MD_LAYOUT_DETACH; + rc = mdo_declare_layout_change(env, sobj, mlc, handle); + if (rc) + return rc; + + lum->lum_hash_type |= cpu_to_le32(LMV_HASH_FLAG_MIGRATION); + } else if (S_ISLNK(attr->la_mode)) { + 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; + } + + mdd_object_make_hint(env, tpobj, tobj, attr, spec, hint); + + rc = mdd_declare_create(env, mdo2mdd(&tpobj->mod_obj), tpobj, tobj, + tname, attr, handle, spec, ldata, NULL, NULL, + NULL, hint); + if (rc) + return rc; + + /* + * tobj mode will be used in mdo_declare_layout_change(), 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; + + if (S_ISDIR(attr->la_mode)) { + if (!lmv) { + /* if sobj is not striped, fake a 1-stripe LMV */ + 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); + lmv->lmv_hash_type = cpu_to_le32(LMV_HASH_TYPE_DEFAULT); + fid_le_to_cpu(&lmv->lmv_stripe_fids[0], + mdd_object_fid(sobj)); + mlc->mlc_buf.lb_buf = lmv; + mlc->mlc_buf.lb_len = lmv_mds_md_size(1, LMV_MAGIC_V1); + } else { + mlc->mlc_buf = *sbuf; + } + mlc->mlc_opc = MD_LAYOUT_ATTACH; + rc = mdo_declare_layout_change(env, tobj, mlc, handle); + if (rc) + return rc; + } + + 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; - rc = mdo_declare_xattr_set(env, mdd_tobj, NULL, - XATTR_NAME_FID, - LU_XATTR_REPLACE, handle); - if (rc < 0) + + /* target may be remote, update PFID via sobj. */ + fid_buf.lb_buf = (void *)mdd_object_fid(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(mdd_object_type(mdd_sobj))) { - rc = mdo_declare_ref_del(env, mdd_pobj, handle); - if (rc != 0) + if (!S_ISDIR(attr->la_mode)) { + rc = mdd_iterate_linkea(env, sobj, tobj, tname, + mdd_object_fid(tpobj), ldata, NULL, + handle, mdd_declare_update_link); + if (rc) + return rc; + } + + if (!S_ISDIR(attr->la_mode) || lmv) { + rc = mdo_declare_ref_del(env, sobj, handle); + if (rc) return rc; + + if (S_ISDIR(attr->la_mode)) { + rc = mdo_declare_ref_del(env, sobj, handle); + if (rc) + return rc; + } + + rc = mdo_declare_destroy(env, sobj, handle); + if (rc) + return rc; + } + + rc = mdd_declare_migrate_update(env, spobj, tpobj, tobj, sname, tname, + attr, spattr, tpattr, ldata, ma, + handle); + return rc; +} + +/** + * migrate dirent from \a spobj to \a tpobj. + **/ +static int mdd_migrate_update(const struct lu_env *env, + struct mdd_object *spobj, + struct mdd_object *tpobj, + struct mdd_object *obj, + const struct lu_name *sname, + const struct lu_name *tname, + struct lu_attr *attr, + struct lu_attr *spattr, + struct lu_attr *tpattr, + struct linkea_data *ldata, + struct md_attr *ma, + struct thandle *handle) +{ + struct mdd_thread_info *info = mdd_env_info(env); + struct lu_attr *la = &info->mti_la_for_fix; + int rc; + + ENTRY; + + CDEBUG(D_INFO, "update "DFID" from "DFID"/%s to "DFID"/%s\n", + PFID(mdd_object_fid(obj)), PFID(mdd_object_fid(spobj)), + sname->ln_name, PFID(mdd_object_fid(tpobj)), tname->ln_name); + + rc = __mdd_index_delete(env, spobj, sname->ln_name, + S_ISDIR(attr->la_mode), handle); + if (rc) + RETURN(rc); + + rc = __mdd_index_insert(env, tpobj, mdd_object_fid(obj), + attr->la_mode & S_IFMT, + tname->ln_name, handle); + if (rc) + RETURN(rc); + + rc = mdd_links_write(env, obj, 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); + } + + RETURN(rc); +} + +/** + * Migrate file/dir to target MDT. + * + * Create target according to \a spec, and then migrate xattrs, if it's + * directory, migrate source stripes to target. + * + * \param[in] env execution environment + * \param[in] spobj source parent object + * \param[in] tpobj target parent object + * \param[in] sobj source object + * \param[in] tobj target object + * \param[in] lname file name + * \param[in] spattr source parent attributes + * \param[in] tpattr target parent attributes + * \param[in] attr source attributes + * \param[in] sbuf source LMV buf + * \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 *spobj, + struct mdd_object *tpobj, + struct mdd_object *sobj, + struct mdd_object *tobj, + const struct lu_name *sname, + const struct lu_name *tname, + struct lu_attr *spattr, + struct lu_attr *tpattr, + struct lu_attr *attr, + const struct lu_buf *sbuf, + struct linkea_data *ldata, + struct md_attr *ma, + struct md_op_spec *spec, + struct dt_allocation_hint *hint, + struct thandle *handle) +{ + int rc; + + ENTRY; + + /* + * migrate sobj stripes to tobj if it's directory: + * 1. detach stripes from sobj. + * 2. attach stripes to tobj, see mdd_declare_migrate_mdt(). + * 3. create stripes for tobj, see lod_xattr_set_lmv(). + */ + if (S_ISDIR(attr->la_mode)) { + struct mdd_thread_info *info = mdd_env_info(env); + struct md_layout_change *mlc = &info->mti_mlc; + + mlc->mlc_opc = MD_LAYOUT_DETACH; + + mdd_write_lock(env, sobj, DT_SRC_PARENT); + rc = mdo_layout_change(env, sobj, mlc, 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, false); + 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 *)mdd_object_fid(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); + /* O_DELAY_CREATE file may not have LOV, ignore -ENODATA */ + if (rc && rc != -ENODATA) + RETURN(rc); + rc = 0; + } + + /* update links FID */ + if (!S_ISDIR(attr->la_mode)) { + rc = mdd_iterate_linkea(env, sobj, tobj, tname, + mdd_object_fid(tpobj), ldata, + NULL, handle, mdd_update_link); + if (rc) + RETURN(rc); + } + + /* don't destroy sobj if it's plain directory */ + if (!S_ISDIR(attr->la_mode) || sbuf->lb_buf) { + mdd_write_lock(env, sobj, DT_SRC_CHILD); + rc = mdo_ref_del(env, sobj, handle); + if (!rc) { + if (S_ISDIR(attr->la_mode)) + rc = mdo_ref_del(env, sobj, handle); + if (!rc) + rc = mdo_destroy(env, sobj, handle); + } + mdd_write_unlock(env, sobj); + if (rc) + RETURN(rc); + } + + rc = mdd_migrate_update(env, spobj, tpobj, tobj, sname, tname, attr, + spattr, tpattr, ldata, ma, handle); + + RETURN(rc); +} + +/* NB: if user issued different migrate command, we can't adjust it silently + * here, because this command will decide target MDT in subdir migration in + * LMV. + */ +static int mdd_migrate_cmd_check(struct mdd_device *mdd, + const struct lmv_mds_md_v1 *lmv, + const struct lmv_user_md_v1 *lum, + const struct lu_name *lname) +{ + __u32 lum_stripe_count = lum->lum_stripe_count; + __u32 lmv_hash_type = lmv->lmv_hash_type; + + if (!lmv_is_sane(lmv)) + return -EBADF; + + /* if stripe_count unspecified, set to 1 */ + if (!lum_stripe_count) + lum_stripe_count = cpu_to_le32(1); + + lmv_hash_type &= ~cpu_to_le32(LMV_HASH_FLAG_MIGRATION); + + /* TODO: check specific MDTs */ + if (lum_stripe_count != lmv->lmv_migrate_offset || + lum->lum_stripe_offset != lmv->lmv_master_mdt_index || + (lum->lum_hash_type && lum->lum_hash_type != lmv_hash_type)) { + CERROR("%s: '"DNAME"' migration was interrupted, run 'lfs migrate -m %d -c %d -H %s "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), + mdt_hash_name[le32_to_cpu(lmv_hash_type)], + PNAME(lname)); + return -EPERM; } - /* 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) - return rc; + return -EALREADY; +} + +/** + * Internal function to migrate directory or file between MDTs. + * + * 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] spobj source parent object + * \param[in] tpobj target parent object + * \param[in] sobj source object + * \param[in] tobj target object + * \param[in] sname source file name + * \param[in] tname target file name + * \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_object(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 *sname, + const struct lu_name *tname, + struct md_op_spec *spec, + struct md_attr *ma) +{ + struct mdd_thread_info *info = mdd_env_info(env); + struct mdd_device *mdd = mdo2mdd(&spobj->mod_obj); + 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_buf sbuf = { NULL }; + struct lmv_mds_md_v1 *lmv; + struct thandle *handle; + int rc; + + ENTRY; + + rc = mdd_la_get(env, sobj, attr); + if (rc) + RETURN(rc); + + rc = mdd_la_get(env, spobj, spattr); + if (rc) + RETURN(rc); + + rc = mdd_la_get(env, tpobj, tpattr); + if (rc) + RETURN(rc); + + if (S_ISDIR(attr->la_mode) && !spec->sp_migrate_nsonly) { + struct lmv_user_md_v1 *lum = spec->u.sp_ea.eadata; + + LASSERT(lum); + + /* if user use default value '0' for stripe_count, we need to + * adjust it to '1' to create a 1-stripe directory. + */ + if (lum->lum_stripe_count == 0) + lum->lum_stripe_count = cpu_to_le32(1); + + rc = mdd_stripe_get(env, sobj, &sbuf, XATTR_NAME_LMV); + if (rc && rc != -ENODATA) + GOTO(out, rc); + + lmv = sbuf.lb_buf; + if (lmv) { + if (!lmv_is_sane(lmv)) + GOTO(out, rc = -EBADF); + if (lmv_is_migrating(lmv)) { + rc = mdd_migrate_cmd_check(mdd, lmv, lum, + sname); + GOTO(out, rc); + } + } + } else if (!S_ISDIR(attr->la_mode)) { + if (spobj == tpobj) + GOTO(out, rc = -EALREADY); + + /* update namespace only if @sobj is on MDT where @tpobj is. */ + if (!mdd_object_remote(tpobj) && !mdd_object_remote(sobj)) + spec->sp_migrate_nsonly = true; + + 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(mdd_object_fid(sobj)), rc); + GOTO(out, rc); + } + } + } + + /* linkea needs update upon FID or parent stripe change */ + rc = mdd_migrate_linkea_prepare(env, mdd, spobj, tpobj, sobj, sname, + tname, attr, ldata); + if (rc > 0) + /* update namespace only if @sobj has link on its MDT. */ + spec->sp_migrate_nsonly = true; + else if (rc < 0) + GOTO(out, rc); + + rc = mdd_migrate_sanity_check(env, mdd, spobj, tpobj, sobj, tobj, + spattr, tpattr, attr); + if (rc) + GOTO(out, rc); + + handle = mdd_trans_create(env, mdd); + if (IS_ERR(handle)) + GOTO(out, rc = PTR_ERR(handle)); + + if (spec->sp_migrate_nsonly) + rc = mdd_declare_migrate_update(env, spobj, tpobj, sobj, sname, + tname, attr, spattr, tpattr, + ldata, ma, handle); + else + rc = mdd_declare_migrate_create(env, spobj, tpobj, sobj, tobj, + sname, tname, spattr, tpattr, + attr, &sbuf, ldata, ma, spec, + hint, handle); + if (rc) + GOTO(stop, rc); + + rc = mdd_declare_changelog_store(env, mdd, CL_MIGRATE, tname, sname, + handle); + if (rc) + GOTO(stop, rc); + + rc = mdd_trans_start(env, mdd, handle); + if (rc) + GOTO(stop, rc); + + if (spec->sp_migrate_nsonly) + rc = mdd_migrate_update(env, spobj, tpobj, sobj, sname, tname, + attr, spattr, tpattr, ldata, ma, + handle); + else + rc = mdd_migrate_create(env, spobj, tpobj, sobj, tobj, sname, + tname, spattr, tpattr, attr, &sbuf, + ldata, ma, spec, hint, handle); + if (rc) + GOTO(stop, rc); + + rc = mdd_changelog_ns_store(env, mdd, CL_MIGRATE, 0, + spec->sp_migrate_nsonly ? sobj : tobj, + mdd_object_fid(spobj), mdd_object_fid(sobj), + mdd_object_fid(tpobj), tname, sname, + handle); + if (rc) + GOTO(stop, rc); + EXIT; + +stop: + rc = mdd_trans_stop(env, mdd, rc, handle); +out: + lu_buf_free(&sbuf); + + return rc; +} + +/** + * Migrate directory or file between MDTs. + * + * \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_thread_info *info = mdd_env_info(env); + struct mdd_device *mdd = mdo2mdd(md_pobj); + 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_buf pbuf = { NULL }; + struct lu_fid *fid = &info->mti_fid2; + struct lmv_mds_md_v1 *lmv; + int rc; + + ENTRY; + + /* 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); + + lmv = pbuf.lb_buf; + if (lmv) { + int index; + + if (!lmv_is_sane(lmv)) + GOTO(out, rc = -EBADF); + + /* locate target parent stripe */ + /* fail check here to make sure top dir migration succeed. */ + if (lmv_is_migrating(lmv) && + OBD_FAIL_CHECK_RESET(OBD_FAIL_MIGRATE_ENTRIES, 0)) + GOTO(out, rc = -EIO); + + index = lmv_name_to_stripe_index(lmv, lname->ln_name, + lname->ln_namelen); + if (index < 0) + GOTO(out, rc = index); + + fid_le_to_cpu(fid, &lmv->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 (lmv_is_layout_changing(lmv)) { + index = lmv_name_to_stripe_index_old(lmv, + lname->ln_name, + lname->ln_namelen); + if (index < 0) + GOTO(out, rc = index); + + fid_le_to_cpu(fid, &lmv->lmv_stripe_fids[index]); + spobj = mdd_object_find(env, mdd, fid); + if (IS_ERR(spobj)) + GOTO(out, rc = PTR_ERR(spobj)); + + /* parent stripe unchanged */ + if (spobj == tpobj) { + if (!lmv_is_restriping(lmv)) + GOTO(out, rc = -EINVAL); + GOTO(out, rc = -EALREADY); + } + } else { + spobj = tpobj; + mdd_object_get(spobj); + } + } else { + tpobj = pobj; + spobj = pobj; + mdd_object_get(tpobj); + mdd_object_get(spobj); + } + + rc = mdd_migrate_object(env, spobj, tpobj, sobj, tobj, lname, lname, + spec, ma); + GOTO(out, rc); + +out: + if (!IS_ERR_OR_NULL(spobj)) + mdd_object_put(env, spobj); + if (!IS_ERR_OR_NULL(tpobj)) + mdd_object_put(env, tpobj); + lu_buf_free(&pbuf); + + return rc; +} + +static int mdd_declare_1sd_collapse(const struct lu_env *env, + struct mdd_object *pobj, + struct mdd_object *obj, + struct mdd_object *stripe, + struct lu_attr *attr, + struct md_layout_change *mlc, + struct lu_name *lname, + struct thandle *handle) +{ + int rc; + + mlc->mlc_opc = MD_LAYOUT_DETACH; + rc = mdo_declare_layout_change(env, obj, mlc, handle); + if (rc) + return rc; + + rc = mdo_declare_index_insert(env, stripe, mdd_object_fid(pobj), + S_IFDIR, dotdot, handle); + if (rc) + return rc; + + rc = mdd_iterate_xattrs(env, obj, stripe, false, handle, + mdo_declare_xattr_set); + if (rc) + return rc; + + rc = mdo_declare_xattr_del(env, stripe, XATTR_NAME_LMV, handle); + if (rc) + 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, mdd_object_fid(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 = mdo_declare_ref_del(env, obj, handle); + if (rc) + return rc; + + rc = mdo_declare_destroy(env, obj, handle); + if (rc) + return rc; + + return rc; +} + +/* transform one-stripe directory to a plain directory */ +static int mdd_1sd_collapse(const struct lu_env *env, + struct mdd_object *pobj, + struct mdd_object *obj, + struct mdd_object *stripe, + struct lu_attr *attr, + struct md_layout_change *mlc, + struct lu_name *lname, + struct thandle *handle) +{ + int rc; + + ENTRY; + + /* replace 1-stripe directory with its stripe */ + mlc->mlc_opc = MD_LAYOUT_DETACH; + + mdd_write_lock(env, obj, DT_SRC_PARENT); + rc = mdo_layout_change(env, obj, mlc, handle); + mdd_write_unlock(env, obj); + if (rc) + RETURN(rc); + + mdd_write_lock(env, pobj, DT_SRC_PARENT); + mdd_write_lock(env, obj, DT_SRC_CHILD); + + /* insert dotdot to stripe which points to parent */ + rc = __mdd_index_insert_only(env, stripe, mdd_object_fid(pobj), + S_IFDIR, dotdot, handle); + if (rc) + GOTO(out, rc); + + /* copy xattrs including linkea */ + rc = mdd_iterate_xattrs(env, obj, stripe, false, handle, mdo_xattr_set); + if (rc) + GOTO(out, rc); + + /* delete LMV */ + rc = mdo_xattr_del(env, stripe, XATTR_NAME_LMV, handle); + if (rc) + GOTO(out, rc); - rc = mdd_declare_links_add(env, mdd_tobj, handle, NULL); - if (rc != 0) - return rc; + /* don't set nlink from parent */ + attr->la_valid &= ~LA_NLINK; - if (S_ISDIR(mdd_object_type(mdd_sobj))) { - rc = mdo_declare_ref_add(env, mdd_pobj, handle); - if (rc != 0) - return rc; - } + rc = mdo_attr_set(env, stripe, attr, handle); + if (rc) + GOTO(out, rc); - /* delete old object */ - rc = mdo_declare_ref_del(env, mdd_sobj, handle); - if (rc != 0) - return rc; + /* delete dir name from parent */ + rc = __mdd_index_delete_only(env, pobj, lname->ln_name, handle); + if (rc) + GOTO(out, 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; - } + /* insert stripe to parent with dir name */ + rc = __mdd_index_insert_only(env, pobj, mdd_object_fid(stripe), + attr->la_mode, lname->ln_name, handle); + if (rc) + GOTO(out, rc); - rc = mdd_declare_finish_unlink(env, mdd_sobj, handle); + /* destroy dir obj */ + rc = mdo_ref_del(env, obj, handle); if (rc) - return rc; + GOTO(out, rc); - rc = mdo_declare_attr_set(env, mdd_pobj, parent_la, handle); - if (rc != 0) - return rc; + rc = mdo_ref_del(env, obj, handle); + if (rc) + GOTO(out, rc); - rc = mdd_declare_changelog_store(env, mdd, lname, NULL, handle); + rc = mdo_destroy(env, obj, handle); + if (rc) + GOTO(out, rc); + + EXIT; +out: + mdd_write_unlock(env, obj); + mdd_write_unlock(env, pobj); 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) +/* + * shrink directory stripes after migration/merge + */ +int mdd_dir_layout_shrink(const struct lu_env *env, + struct md_object *md_obj, + struct md_layout_change *mlc) { - 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 linkea_data *ldata = &mdd_env_info(env)->mti_link_data; - struct thandle *handle; - int is_dir = S_ISDIR(mdd_object_type(mdd_sobj)); - const char *name = lname->ln_name; - int rc; - ENTRY; + 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; - /* 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; + ENTRY; - rc = mdd_la_get(env, mdd_sobj, so_attr); - if (rc != 0) + rc = mdd_la_get(env, obj, attr); + if (rc) RETURN(rc); - ldata->ld_buf = NULL; - rc = mdd_links_read(env, mdd_sobj, ldata); - if (rc != 0 && rc != -ENOENT && rc != -ENODATA) + if (!S_ISDIR(attr->la_mode)) + RETURN(-ENOTDIR); + + rc = mdd_stripe_get(env, obj, &lmv_buf, XATTR_NAME_LMV); + if (rc < 0) RETURN(rc); - handle = mdd_trans_create(env, mdd); - if (IS_ERR(handle)) - RETURN(PTR_ERR(handle)); + lmv = lmv_buf.lb_buf; + if (!lmv_is_sane(lmv)) + RETURN(-EBADF); - rc = mdd_declare_migrate_update_name(env, mdd_pobj, mdd_sobj, mdd_tobj, - lname, so_attr, p_la, ldata, - 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); - } + lmu = mlc->mlc_buf.lb_buf; - 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))); + /* adjust the default value '0' to '1' */ + if (lmu->lum_stripe_count == 0) + lmu->lum_stripe_count = cpu_to_le32(1); - rc = mdd_trans_start(env, mdd, handle); - if (rc != 0) - GOTO(stop_trans, rc); + /* these were checked in MDT */ + LASSERT(le32_to_cpu(lmu->lum_stripe_count) < + le32_to_cpu(lmv->lmv_stripe_count)); + LASSERT(!lmv_is_splitting(lmv)); + LASSERT(lmv_is_migrating(lmv) || lmv_is_merging(lmv)); - /* Revert IMMUTABLE flag */ - la_flag->la_valid = LA_FLAGS; - la_flag->la_flags = so_attr->la_flags & ~LUSTRE_IMMUTABLE_FL; - rc = mdo_attr_set(env, mdd_sobj, la_flag, handle); - if (rc != 0) - GOTO(stop_trans, rc); + /* if dir stripe count will be shrunk to 1, it needs to be transformed + * to a plain dir, which will cause FID change and namespace update. + */ + if (le32_to_cpu(lmu->lum_stripe_count) == 1) { + struct linkea_data *ldata = &info->mti_link_data; + char *filename = info->mti_name; - /* Remove source name from source directory */ - rc = __mdd_index_delete(env, mdd_pobj, name, is_dir, handle); - if (rc != 0) - GOTO(stop_trans, rc); + rc = mdd_links_read(env, obj, ldata); + if (rc) + GOTO(out, rc); - if (ldata->ld_buf != NULL) { - rc = mdd_update_linkea(env, mdd_pobj, mdd_sobj, mdd_tobj, - lname, ldata, handle); - if (rc != 0) - GOTO(stop_trans, rc); + if (ldata->ld_leh->leh_reccount > 1) + GOTO(out, rc = -EINVAL); - /* linkea update might decrease the source object - * nlink, let's get the attr again after ref_del */ - rc = mdd_la_get(env, mdd_sobj, so_attr); - if (rc != 0) - GOTO(stop_trans, rc); - } + linkea_first_entry(ldata); + if (!ldata->ld_lee) + GOTO(out, rc = -ENODATA); - if (S_ISREG(so_attr->la_mode)) { - if (so_attr->la_nlink == 1) { - rc = mdo_xattr_del(env, mdd_sobj, XATTR_NAME_LOV, - handle); - if (rc != 0 && rc != -ENODATA) - GOTO(stop_trans, rc); - - rc = mdo_xattr_set(env, mdd_tobj, NULL, - XATTR_NAME_FID, - LU_XATTR_REPLACE, handle); - if (rc < 0) - GOTO(stop_trans, rc); + linkea_entry_unpack(ldata->ld_lee, &ldata->ld_reclen, &lname, + fid); + + /* 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; + + pobj = mdd_object_find(env, mdd, fid); + if (IS_ERR(pobj)) { + rc = PTR_ERR(pobj); + pobj = NULL; + 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); - if (rc != 0) - GOTO(stop_trans, rc); + fid_le_to_cpu(fid, &lmv->lmv_stripe_fids[0]); - mdd_write_lock(env, mdd_sobj, MOR_TGT_CHILD); + stripe = mdd_object_find(env, mdd, fid); + if (IS_ERR(stripe)) { + mdd_object_put(env, pobj); + pobj = NULL; + GOTO(out, rc = PTR_ERR(stripe)); + } + } - mdd_sobj->mod_flags |= DEAD_OBJ; - rc = mdd_mark_orphan_object(env, mdd_sobj, handle, false); - if (rc != 0) - GOTO(out_unlock, rc); + handle = mdd_trans_create(env, mdd); + if (IS_ERR(handle)) + GOTO(out, rc = PTR_ERR(handle)); - rc = __mdd_orphan_add(env, mdd_sobj, handle); - if (rc != 0) - GOTO(out_unlock, rc); + mlc->mlc_opc = MD_LAYOUT_SHRINK; + rc = mdo_declare_layout_change(env, obj, mlc, handle); + if (rc) + GOTO(stop_trans, rc); - mdo_ref_del(env, mdd_sobj, handle); - if (is_dir) - mdo_ref_del(env, mdd_sobj, handle); + if (le32_to_cpu(lmu->lum_stripe_count) == 1) { + rc = mdd_declare_1sd_collapse(env, pobj, obj, stripe, attr, mlc, + &lname, handle); + if (rc) + GOTO(stop_trans, rc); + } - /* Get the attr again after ref_del */ - rc = mdd_la_get(env, mdd_sobj, so_attr); - if (rc != 0) - GOTO(out_unlock, rc); + rc = mdd_declare_changelog_store(env, mdd, CL_LAYOUT, NULL, NULL, + handle); + if (rc) + GOTO(stop_trans, rc); - ma->ma_attr = *so_attr; - ma->ma_valid |= MA_INODE; + rc = mdd_trans_start(env, mdd, handle); + if (rc) + GOTO(stop_trans, rc); - rc = mdd_attr_set_internal(env, mdd_pobj, p_la, handle, 0); - if (rc != 0) - GOTO(out_unlock, rc); + mdd_write_lock(env, obj, DT_SRC_PARENT); + mlc->mlc_opc = MD_LAYOUT_SHRINK; + rc = mdo_layout_change(env, obj, mlc, handle); + mdd_write_unlock(env, obj); + if (rc) + GOTO(stop_trans, rc); - rc = mdd_changelog_ns_store(env, mdd, CL_MIGRATE, 0, mdd_tobj, - mdo2fid(mdd_pobj), mdo2fid(mdd_sobj), - mdo2fid(mdd_pobj), lname, lname, handle); - if (rc != 0) { - CWARN("%s: changelog for migrate %s "DFID - "under "DFID" failed: rc = %d\n", - mdd2obd_dev(mdd)->obd_name, lname->ln_name, - PFID(mdd_object_fid(mdd_sobj)), - PFID(mdd_object_fid(mdd_pobj)), rc); - /* Sigh, there are no easy way to migrate back the object, so - * let's reset the result to 0 for now XXX */ - rc = 0; + if (le32_to_cpu(lmu->lum_stripe_count) == 1) { + rc = mdd_1sd_collapse(env, pobj, obj, stripe, attr, mlc, &lname, + handle); + if (rc) + GOTO(stop_trans, rc); } -out_unlock: - mdd_write_unlock(env, mdd_sobj); + + 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); - - RETURN(rc); +out: + if (pobj) { + mdd_object_put(env, stripe); + mdd_object_put(env, pobj); + } + lu_buf_free(&lmv_buf); + return rc; } -static int mdd_fld_lookup(const struct lu_env *env, struct mdd_device *mdd, - const struct lu_fid *fid, __u32 *mdt_index) +static int mdd_dir_declare_split_plain(const struct lu_env *env, + struct mdd_device *mdd, + struct mdd_object *pobj, + struct mdd_object *obj, + struct mdd_object *tobj, + struct md_layout_change *mlc, + struct dt_allocation_hint *hint, + struct thandle *handle) { - struct lu_seq_range *range = &mdd_env_info(env)->mti_range; - struct seq_server_site *ss; + struct mdd_thread_info *info = mdd_env_info(env); + const struct lu_name *lname = mlc->mlc_name; + struct lu_attr *la = &info->mti_la_for_fix; + struct lmv_user_md_v1 *lum = mlc->mlc_spec->u.sp_ea.eadata; + struct linkea_data *ldata = &info->mti_link_data; + struct lmv_mds_md_v1 *lmv; + __u32 count; int rc; - ss = mdd->mdd_md_dev.md_lu_dev.ld_site->ld_seq_site; + mlc->mlc_opc = MD_LAYOUT_DETACH; + rc = mdo_declare_layout_change(env, obj, mlc, handle); + if (rc) + return rc; - range->lsr_flags = LU_SEQ_RANGE_MDT; - rc = fld_server_lookup(env, ss->ss_server_fld, fid->f_seq, range); - if (rc != 0) + memset(ldata, 0, sizeof(*ldata)); + rc = mdd_linkea_prepare(env, obj, NULL, NULL, mdd_object_fid(pobj), + lname, 1, 0, ldata); + if (rc) return rc; - *mdt_index = range->lsr_index; + count = lum->lum_stripe_count; + lum->lum_stripe_count = 0; + mdd_object_make_hint(env, pobj, tobj, mlc->mlc_attr, mlc->mlc_spec, + hint); + rc = mdd_declare_create(env, mdo2mdd(&pobj->mod_obj), pobj, tobj, + lname, mlc->mlc_attr, handle, mlc->mlc_spec, + ldata, NULL, NULL, NULL, hint); + if (rc) + return rc; - return 0; + /* tobj mode will be used in lod_declare_xattr_set(), but it's not + * created yet. + */ + tobj->mod_obj.mo_lu.lo_header->loh_attr |= S_IFDIR; + + 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); + lmv->lmv_hash_type = cpu_to_le32(LMV_HASH_TYPE_DEFAULT); + fid_le_to_cpu(&lmv->lmv_stripe_fids[0], mdd_object_fid(obj)); + + mlc->mlc_opc = MD_LAYOUT_ATTACH; + mlc->mlc_buf.lb_buf = lmv; + mlc->mlc_buf.lb_len = lmv_mds_md_size(1, LMV_MAGIC_V1); + rc = mdo_declare_layout_change(env, tobj, mlc, handle); + if (rc) + return rc; + + rc = mdd_iterate_xattrs(env, obj, tobj, true, handle, + mdo_declare_xattr_set); + if (rc) + return rc; + + lum->lum_stripe_count = count; + mlc->mlc_opc = MD_LAYOUT_SPLIT; + rc = mdo_declare_layout_change(env, tobj, mlc, 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, mdd_object_fid(tobj), + S_IFDIR, lname->ln_name, handle); + if (rc) + return rc; + + la->la_valid = LA_CTIME | LA_MTIME; + rc = mdo_declare_attr_set(env, obj, la, handle); + if (rc) + return rc; + + rc = mdo_declare_attr_set(env, pobj, la, handle); + if (rc) + return rc; + + rc = mdd_declare_changelog_store(env, mdd, CL_MIGRATE, lname, NULL, + handle); + 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) + * plain directory split: + * 1. create \a tobj as plain directory. + * 2. append \a obj as first stripe of \a tobj. + * 3. migrate xattrs from \a obj to \a tobj. + * 4. split \a tobj to specific stripe count. + */ +static int mdd_dir_split_plain(const struct lu_env *env, + struct mdd_device *mdd, + struct mdd_object *pobj, + struct mdd_object *obj, + struct mdd_object *tobj, + struct md_layout_change *mlc, + struct dt_allocation_hint *hint, + struct thandle *handle) { - struct mdd_thread_info *info = mdd_env_info(env); - struct linkea_data *ldata = &info->mti_link_data; - struct mdd_device *mdd = mdo2mdd(&pobj->mod_obj); - int mgr_easize; - struct lu_buf *mgr_buf; - int count; - int rc; - __u64 mdt_index; + struct mdd_thread_info *info = mdd_env_info(env); + struct lu_attr *pattr = &info->mti_pattr; + struct lu_attr *la = &info->mti_la_for_fix; + const struct lu_name *lname = mlc->mlc_name; + struct linkea_data *ldata = &info->mti_link_data; + 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); + /* copy linkea out and set on target later */ + rc = mdd_links_read(env, obj, ldata); + if (rc) + RETURN(rc); - rc = mdo_xattr_get(env, sobj, mgr_buf, XATTR_NAME_LMV); - 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; - CDEBUG(D_HA, "%s: "DFID" override IMMUTE FLAG\n", - mdd2obd_dev(mdd)->obd_name, - PFID(mdd_object_fid(sobj))); - } - } + mlc->mlc_opc = MD_LAYOUT_DETACH; + rc = mdo_layout_change(env, obj, mlc, handle); + if (rc) + RETURN(rc); - rc = mdd_rename_sanity_check(env, pobj, pattr, pobj, pattr, - sobj, sattr, NULL, NULL); - if (rc != 0) + /* don't set nlink from obj */ + mlc->mlc_attr->la_valid &= ~LA_NLINK; + + rc = mdd_create_object(env, pobj, tobj, mlc->mlc_attr, mlc->mlc_spec, + NULL, NULL, NULL, hint, handle, false); + 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_ISREG(sattr->la_mode) || sattr->la_nlink < 2) - RETURN(0); + rc = mdd_iterate_xattrs(env, obj, tobj, true, handle, mdo_xattr_set); + if (rc) + RETURN(rc); - 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 of its links should not be migrated yet, otherwise it - * should have some linkEA there */ - if (rc == -ENOENT || rc == -ENODATA) - RETURN(1); + rc = mdd_links_write(env, tobj, ldata, handle); + if (rc) RETURN(rc); - } - mdt_index = mdd->mdd_md_dev.md_lu_dev.ld_site->ld_seq_site->ss_node_id; - /* If there are still links locally, then the file will not be - * migrated. */ - LASSERT(ldata->ld_leh != NULL); + rc = __mdd_index_delete(env, pobj, lname->ln_name, true, handle); + if (rc) + RETURN(rc); - /* If the linkEA is overflow, then means there are some unknown name - * entries under unknown parents, that will prevent the migration. */ - if (unlikely(ldata->ld_leh->leh_overflow_time)) - RETURN(1); + rc = __mdd_index_insert(env, pobj, mdd_object_fid(tobj), S_IFDIR, + lname->ln_name, handle); + if (rc) + RETURN(rc); - ldata->ld_lee = (struct link_ea_entry *)(ldata->ld_leh + 1); - for (count = 0; count < ldata->ld_leh->leh_reccount; count++) { - struct lu_name lname; - struct lu_fid fid; - __u32 parent_mdt_index; + la->la_ctime = la->la_mtime = mlc->mlc_attr->la_mtime; + la->la_valid = LA_CTIME | LA_MTIME; - 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); + mdd_write_lock(env, obj, DT_SRC_CHILD); + rc = mdd_update_time(env, tobj, mlc->mlc_attr, la, handle); + mdd_write_unlock(env, obj); + if (rc) + RETURN(rc); - rc = mdd_fld_lookup(env, mdd, &fid, &parent_mdt_index); - if (rc != 0) - RETURN(rc); + rc = mdd_la_get(env, pobj, pattr); + if (rc) + RETURN(rc); - /* Migrate the object only if none of its parents are on the - * current MDT. */ - if (parent_mdt_index != mdt_index) - continue; + la->la_valid = LA_CTIME | LA_MTIME; - CDEBUG(D_INFO, DFID"still has local entry %.*s "DFID"\n", - PFID(mdd_object_fid(sobj)), lname.ln_namelen, - lname.ln_name, PFID(&fid)); - rc = 1; - break; - } + mdd_write_lock(env, pobj, DT_SRC_PARENT); + rc = mdd_update_time(env, pobj, pattr, la, handle); + mdd_write_unlock(env, pobj); + if (rc) + RETURN(rc); + /* FID changes, record it as CL_MIGRATE */ + rc = mdd_changelog_ns_store(env, mdd, CL_MIGRATE, 0, tobj, + mdd_object_fid(pobj), mdd_object_fid(obj), + mdd_object_fid(pobj), lname, lname, handle); RETURN(rc); } -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) +int mdd_dir_layout_split(const struct lu_env *env, struct md_object *o, + struct md_layout_change *mlc) { - 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 = md2mdd_obj(tobj); - struct lu_attr *so_attr = MDD_ENV_VAR(env, cattr); - struct lu_attr *pattr = MDD_ENV_VAR(env, pattr); - bool created = false; - int rc; + struct mdd_thread_info *info = mdd_env_info(env); + struct mdd_device *mdd = mdo2mdd(o); + struct mdd_object *obj = md2mdd_obj(o); + struct mdd_object *pobj = md2mdd_obj(mlc->mlc_parent); + struct mdd_object *tobj = md2mdd_obj(mlc->mlc_target); + struct dt_allocation_hint *hint = &info->mti_hint; + bool is_plain = false; + struct thandle *handle; + int rc; 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 > 0) { - CDEBUG(D_OTHER, - "%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); - if (rc != 0) - GOTO(put, rc); + LASSERT(S_ISDIR(mdd_object_type(obj))); - rc = mdd_la_get(env, mdd_pobj, pattr); - if (rc != 0) - GOTO(put, rc); + rc = mdo_xattr_get(env, obj, &LU_BUF_NULL, XATTR_NAME_LMV); + if (rc == -ENODATA) + is_plain = true; + else if (rc < 0) + RETURN(rc); - rc = mdd_migrate_sanity_check(env, mdd_pobj, pattr, mdd_sobj, so_attr); - if (rc != 0) { - if (rc > 0) - rc = 0; - GOTO(put, rc); - } + handle = mdd_trans_create(env, mdd); + if (IS_ERR(handle)) + RETURN(PTR_ERR(handle)); - /* 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. - */ + if (is_plain) { + rc = mdd_dir_declare_split_plain(env, mdd, pobj, obj, tobj, mlc, + hint, handle); + } else { + mlc->mlc_opc = MD_LAYOUT_SPLIT; + rc = mdo_declare_layout_change(env, obj, mlc, handle); + if (rc) + GOTO(stop_trans, rc); - /* step 1: Check whether the orphan object has been created, and create - * orphan object on the remote MDT if needed */ - if (!mdd_object_exists(mdd_tobj)) { - rc = mdd_migrate_create(env, mdd_pobj, mdd_sobj, mdd_tobj, - lname, so_attr); - if (rc != 0) - GOTO(put, rc); - created = true; + rc = mdd_declare_changelog_store(env, mdd, CL_LAYOUT, NULL, + NULL, handle); } + if (rc) + GOTO(stop_trans, rc); - LASSERT(mdd_object_exists(mdd_tobj)); - /* step 2: migrate xattr */ - rc = mdd_migrate_xattrs(env, mdd_sobj, mdd_tobj); - if (rc != 0) - GOTO(put, rc); + rc = mdd_trans_start(env, mdd, handle); + if (rc) + GOTO(stop_trans, rc); - /* 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); + if (is_plain) { + rc = mdd_dir_split_plain(env, mdd, pobj, obj, tobj, mlc, hint, + handle); } else { - OBD_FAIL_TIMEOUT(OBD_FAIL_MIGRATE_DELAY, cfs_fail_val); + mdd_write_lock(env, obj, DT_TGT_CHILD); + rc = mdo_xattr_set(env, obj, NULL, XATTR_NAME_LMV, + LU_XATTR_CREATE, handle); + mdd_write_unlock(env, obj); + if (rc) + GOTO(stop_trans, rc); + + rc = mdd_changelog_data_store_xattr(env, mdd, CL_LAYOUT, 0, obj, + XATTR_NAME_LMV, handle); } + if (rc) + GOTO(stop_trans, rc); - LASSERT(mdd_object_exists(mdd_tobj)); - /* 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); + EXIT; - /* newly created target was not locked, don't cache its attributes */ - if (created) - mdd_invalidate(env, tobj); -put: - RETURN(rc); +stop_trans: + rc = mdd_trans_stop(env, mdd, rc, handle); + + return rc; } const struct md_dir_operations mdd_dir_ops = {