X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Flmv%2Flmv_internal.h;h=a9dd6644a26973027dddbf791304b1be4c9bc996;hb=5a6aa0e6d1583cc0d4c82ae8c95fb7b9856d6284;hp=dfd698a399bcb4217afd6e497fd73f29deb53697;hpb=9d4b898b1c1c7c318fda5f0c345ed726c774c06a;p=fs%2Flustre-release.git diff --git a/lustre/lmv/lmv_internal.h b/lustre/lmv/lmv_internal.h index dfd698a..a9dd664 100644 --- a/lustre/lmv/lmv_internal.h +++ b/lustre/lmv/lmv_internal.h @@ -1,144 +1,161 @@ +/* + * GPL HEADER START + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 only, + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License version 2 for more details (a copy is included + * in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU General Public License + * version 2 along with this program; If not, see + * http://www.gnu.org/licenses/gpl-2.0.html + * + * GPL HEADER END + */ +/* + * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + * + * Copyright (c) 2011, 2016, Intel Corporation. + */ +/* + * This file is part of Lustre, http://www.lustre.org/ + * Lustre is a trademark of Sun Microsystems, Inc. + */ + #ifndef _LMV_INTERNAL_H_ #define _LMV_INTERNAL_H_ -#define LL_IT2STR(it) \ - ((it) ? ldlm_it2str((it)->it_op) : "0") +#include +#include +#include -#define MEA_SIZE_LMV(lmv) \ - ((lmv)->desc.ld_tgt_count * \ - sizeof(struct lustre_id) + sizeof(struct mea)) - -struct lmv_inode { - struct lustre_id id; /* id of dirobj */ - unsigned long size; /* slave size value */ - int flags; -}; - -#define O_FREEING (1 << 0) - -struct lmv_obj { - struct list_head list; - struct semaphore guard; - int state; /* object state. */ - atomic_t count; /* ref counter. */ - struct lustre_id id; /* master id of dir */ - void *update; /* bitmap of status (uptodate) */ - __u32 hashtype; - int objcount; /* number of slaves */ - struct lmv_inode *objs; /* array of dirobjs */ - struct obd_device *obd; /* pointer to LMV itself */ - unsigned long mtime; - unsigned long ctime; - unsigned long atime; - unsigned long nlink; -}; - -static inline void -lmv_lock_obj(struct lmv_obj *obj) -{ - LASSERT(obj); - down(&obj->guard); -} +#define LMV_MAX_TGT_COUNT 128 -static inline void -lmv_unlock_obj(struct lmv_obj *obj) -{ - LASSERT(obj); - up(&obj->guard); -} - -void lmv_add_obj(struct lmv_obj *obj); -void lmv_del_obj(struct lmv_obj *obj); - -void lmv_put_obj(struct lmv_obj *obj); -void lmv_free_obj(struct lmv_obj *obj); +#define LL_IT2STR(it) \ + ((it) ? ldlm_it2str((it)->it_op) : "0") -int lmv_setup_mgr(struct obd_device *obd); -void lmv_cleanup_mgr(struct obd_device *obd); -int lmv_check_connect(struct obd_device *obd); +int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data, + struct lookup_intent *it, struct ptlrpc_request **reqp, + ldlm_blocking_callback cb_blocking, + __u64 extra_lock_flags); -struct lmv_obj *lmv_get_obj(struct lmv_obj *obj); +int lmv_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *, + void *, int); +int lmv_fld_lookup(struct lmv_obd *lmv, const struct lu_fid *fid, u32 *mds); +int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, u32 mds); +int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp, + struct lu_fid *fid, struct md_op_data *op_data); -struct lmv_obj *lmv_grab_obj(struct obd_device *obd, - struct lustre_id *id); +int lmv_revalidate_slaves(struct obd_export *exp, + const struct lmv_stripe_md *lsm, + ldlm_blocking_callback cb_blocking, + int extra_lock_flags); -struct lmv_obj *lmv_alloc_obj(struct obd_device *obd, - struct lustre_id *id, - struct mea *mea); +static inline struct obd_device *lmv2obd_dev(struct lmv_obd *lmv) +{ + return container_of0(lmv, struct obd_device, u.lmv); +} -struct lmv_obj *lmv_create_obj(struct obd_export *exp, - struct lustre_id *id, - struct mea *mea); +static inline struct lmv_tgt_desc * +lmv_get_target(struct lmv_obd *lmv, u32 mdt_idx, int *index) +{ + int i; -int lmv_delete_obj(struct obd_export *exp, struct lustre_id *id); + for (i = 0; i < lmv->desc.ld_tgt_count; i++) { + if (lmv->tgts[i] == NULL) + continue; -int lmv_intent_lock(struct obd_export *, struct lustre_id *, - const char *, int, void *, int, - struct lustre_id *, struct lookup_intent *, int, - struct ptlrpc_request **, ldlm_blocking_callback); + if (lmv->tgts[i]->ltd_idx == mdt_idx) { + if (index != NULL) + *index = i; + return lmv->tgts[i]; + } + } -int lmv_intent_lookup(struct obd_export *, struct lustre_id *, - const char *, int, void *, int, - struct lustre_id *, struct lookup_intent *, int, - struct ptlrpc_request **, ldlm_blocking_callback); + return ERR_PTR(-ENODEV); +} -int lmv_intent_getattr(struct obd_export *, struct lustre_id *, - const char *, int, void *, int, - struct lustre_id *, struct lookup_intent *, int, - struct ptlrpc_request **, ldlm_blocking_callback); +static inline int +lmv_find_target_index(struct lmv_obd *lmv, const struct lu_fid *fid) +{ + struct lmv_tgt_desc *ltd; + u32 mdt_idx = 0; + int index = 0; + + if (lmv->desc.ld_tgt_count > 1) { + int rc; + rc = lmv_fld_lookup(lmv, fid, &mdt_idx); + if (rc < 0) + return rc; + } + + ltd = lmv_get_target(lmv, mdt_idx, &index); + if (IS_ERR(ltd)) + return PTR_ERR(ltd); + + return index; +} -int lmv_intent_open(struct obd_export *, struct lustre_id *, const char *, - int, void *, int, struct lustre_id *, struct lookup_intent *, - int, struct ptlrpc_request **, ldlm_blocking_callback); +static inline struct lmv_tgt_desc * +lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid) +{ + int index; -int lmv_revalidate_slaves(struct obd_export *, struct ptlrpc_request **, - struct lustre_id *, struct lookup_intent *, int, - ldlm_blocking_callback cb_blocking); + index = lmv_find_target_index(lmv, fid); + if (index < 0) + return ERR_PTR(index); -int lmv_get_mea_and_update_object(struct obd_export *, struct lustre_id *); -int lmv_dirobj_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *, - void *, int); + return lmv->tgts[index]; +} -static inline struct mea * -lmv_splitted_dir_body(struct ptlrpc_request *req, int offset) +static inline int lmv_stripe_md_size(int stripe_count) { - struct mds_body *body; - struct mea *mea; + struct lmv_stripe_md *lsm; - LASSERT(req); + return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]); +} - body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body)); +static inline const struct lmv_oinfo * +lsm_name_to_stripe_info(const struct lmv_stripe_md *lsm, const char *name, + int namelen) +{ + int stripe_index; - if (!body || !S_ISDIR(body->mode) || !body->eadatasize) - return NULL; + stripe_index = lmv_name_to_stripe_index(lsm->lsm_md_hash_type, + lsm->lsm_md_stripe_count, + name, namelen); + if (stripe_index < 0) + return ERR_PTR(stripe_index); - mea = lustre_msg_buf(req->rq_repmsg, offset + 1, - body->eadatasize); - LASSERT(mea); + LASSERTF(stripe_index < lsm->lsm_md_stripe_count, + "stripe_index = %d, stripe_count = %d hash_type = %x" + "name = %.*s\n", stripe_index, lsm->lsm_md_stripe_count, + lsm->lsm_md_hash_type, namelen, name); - if (mea->mea_count == 0) - return NULL; - - return mea; + return &lsm->lsm_md_oinfo[stripe_index]; } -/* this checks if passed ids are eaqual. We check here only group (that is mds - * number) and fid number as store cookie is not known outside of its MDS - * anymore and should not be used. */ -static inline int -lmv_id_equal(struct lustre_id *id1, struct lustre_id *id2) +static inline bool lmv_need_try_all_stripes(const struct lmv_stripe_md *lsm) { - if (id1->li_fid.lf_group != id2->li_fid.lf_group) - return 0; - - if (id1->li_fid.lf_id != id2->li_fid.lf_id) - return 0; - - return 1; + return !lmv_is_known_hash_type(lsm->lsm_md_hash_type) || + lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION; } +struct lmv_tgt_desc +*lmv_locate_mds(struct lmv_obd *lmv, struct md_op_data *op_data, + struct lu_fid *fid); /* lproc_lmv.c */ +#ifdef CONFIG_PROC_FS +extern struct lprocfs_vars lprocfs_lmv_obd_vars[]; +#endif extern struct file_operations lmv_proc_target_fops; #endif -