X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Flmv%2Flmv_internal.h;h=b6245b39143399abf438fd40175d8a073c6ac4e5;hb=062275772df6ba9027710048f2c1ee26e5574a51;hp=d4623db0d30ceea6dd55815634af5df0b51d6c1a;hpb=46aaad58c8519994129ef484a4b6945e4c253b19;p=fs%2Flustre-release.git diff --git a/lustre/lmv/lmv_internal.h b/lustre/lmv/lmv_internal.h index d4623db..b6245b3 100644 --- a/lustre/lmv/lmv_internal.h +++ b/lustre/lmv/lmv_internal.h @@ -1,132 +1,185 @@ +/* + * 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.sun.com/software/products/lustre/docs/GPLv2.pdf + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + * GPL HEADER END + */ +/* + * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + * + * Copyright (c) 2011, 2013, 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_ +#include +#include +#include + +#define LMV_MAX_TGT_COUNT 128 + +#define lmv_init_lock(lmv) mutex_lock(&lmv->init_mutex); +#define lmv_init_unlock(lmv) mutex_unlock(&lmv->init_mutex); + #define LL_IT2STR(it) \ ((it) ? ldlm_it2str((it)->it_op) : "0") -#define MEA_SIZE_LMV(lmv) \ - ((lmv)->desc.ld_tgt_count * \ - sizeof(struct ll_fid) + sizeof(struct mea)) - -struct lmv_inode { - struct ll_fid fid; /* fid of dirobj */ - unsigned long size; - int flags; -}; - -struct lmv_obj { - struct list_head list; - struct semaphore guard; - int freeing; /* object is freeing. */ - atomic_t count; - struct ll_fid fid; /* master fid of dir */ - void *update; /* bitmap of status (uptodate) */ - int objcount; - struct lmv_inode *objs; /* array of dirobjs */ - struct obd_device *obd; /* pointer to LMV itself */ -}; - -static inline void -lmv_lock_obj(struct lmv_obj *obj) -{ - LASSERT(obj); - down(&obj->guard); -} +int lmv_check_connect(struct obd_device *obd); -static inline void -lmv_unlock_obj(struct lmv_obj *obj) +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); + +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, + mdsno_t *mds); +int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, + mdsno_t mds); +int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp, + struct lu_fid *fid, struct md_op_data *op_data); + +int lmv_unpack_md(struct obd_export *exp, struct lmv_stripe_md **lsmp, + const union lmv_mds_md *lmm, int stripe_count); + +int lmv_revalidate_slaves(struct obd_export *exp, struct mdt_body *mbody, + struct lmv_stripe_md *lsm, + ldlm_blocking_callback cb_blocking, + int extra_lock_flags); + +static inline struct obd_device *lmv2obd_dev(struct lmv_obd *lmv) { - LASSERT(obj); - up(&obj->guard); + return container_of0(lmv, struct obd_device, u.lmv); } -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); - -int lmv_setup_mgr(struct obd_device *obd); -void lmv_cleanup_mgr(struct obd_device *obd); -int lmv_check_connect(struct obd_device *obd); - -struct lmv_obj *lmv_get_obj(struct lmv_obj *obj); +static inline struct lmv_tgt_desc * +lmv_get_target(struct lmv_obd *lmv, mdsno_t mdt_idx, int *index) +{ + int i; -struct lmv_obj *lmv_grab_obj(struct obd_device *obd, - struct ll_fid *fid); + for (i = 0; i < lmv->desc.ld_tgt_count; i++) { + if (lmv->tgts[i] == NULL) + continue; -struct lmv_obj *lmv_alloc_obj(struct obd_device *obd, - struct ll_fid *fid, - struct mea *mea); + if (lmv->tgts[i]->ltd_idx == mdt_idx) { + if (index != NULL) + *index = i; + return lmv->tgts[i]; + } + } -struct lmv_obj *lmv_create_obj(struct obd_export *exp, - struct ll_fid *fid, - struct mea *mea); + return ERR_PTR(-ENODEV); +} -int lmv_destroy_obj(struct obd_export *exp, struct ll_fid *fid); +static inline int +lmv_find_target_index(struct lmv_obd *lmv, const struct lu_fid *fid) +{ + struct lmv_tgt_desc *ltd; + mdsno_t 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_lock(struct obd_export *, struct ll_uctxt *, - struct ll_fid *, const char *, int, void *, int, - struct ll_fid *, 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_intent_lookup(struct obd_export *, struct ll_uctxt *, - struct ll_fid *, const char *, int, void *, int, - struct ll_fid *, struct lookup_intent *, int, - struct ptlrpc_request **, ldlm_blocking_callback); + index = lmv_find_target_index(lmv, fid); + if (index < 0) + return ERR_PTR(index); -int lmv_intent_getattr(struct obd_export *, struct ll_uctxt *, - struct ll_fid *, const char *, int, void *, int, - struct ll_fid *, struct lookup_intent *, int, - struct ptlrpc_request **, ldlm_blocking_callback); + return lmv->tgts[index]; +} -int lmv_intent_open(struct obd_export *, struct ll_uctxt *, - struct ll_fid *, const char *, int, void *, int, - struct ll_fid *, struct lookup_intent *, int, - struct ptlrpc_request **, ldlm_blocking_callback); +static inline int lmv_stripe_md_size(int stripe_count) +{ + struct lmv_stripe_md *lsm; -int lmv_revalidate_slaves(struct obd_export *, struct ptlrpc_request **, - struct ll_fid *, struct lookup_intent *, int, - ldlm_blocking_callback cb_blocking); + return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]); +} -int lmv_get_mea_and_update_object(struct obd_export *, struct ll_fid *); -int lmv_dirobj_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *, - void *, int); +int lmv_name_to_stripe_index(enum lmv_hash_type hashtype, + unsigned int max_mdt_index, + const char *name, int namelen); -static inline struct mea * -body_of_splitted_dir(struct ptlrpc_request *req, int offset) +static inline const struct lmv_oinfo * +lsm_name_to_stripe_info(const struct lmv_stripe_md *lsm, const char *name, + int namelen) { - struct mds_body *body; - struct mea *mea; - - LASSERT(req); + int stripe_index; - body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body)); + 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); - if (!body || !S_ISDIR(body->mode) || !body->eadatasize) - return NULL; + 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); - mea = lustre_msg_buf(req->rq_repmsg, - offset + 1, body->eadatasize); - LASSERT(mea); + return &lsm->lsm_md_oinfo[stripe_index]; +} - if (mea->mea_count == 0) - return NULL; - - return mea; +static inline bool lmv_is_known_hash_type(const struct lmv_stripe_md *lsm) +{ + return lsm->lsm_md_hash_type == LMV_HASH_TYPE_FNV_1A_64 || + lsm->lsm_md_hash_type == LMV_HASH_TYPE_ALL_CHARS; } -static inline int -fid_equal(struct ll_fid *fid1, struct ll_fid *fid2) +static inline bool lmv_need_try_all_stripes(const struct lmv_stripe_md *lsm) { - if (fid1->mds != fid2->mds) - return 0; - if (fid1->id != fid2->id) - return 0; - if (fid1->generation != fid2->generation) - return 0; - return 1; + return !lmv_is_known_hash_type(lsm) || + 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 LPROCFS +extern struct lprocfs_seq_vars lprocfs_lmv_obd_vars[]; #endif +extern struct file_operations lmv_proc_target_fops; +#endif