X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Flmv%2Flmv_internal.h;h=daf6a7b85a82dee9164328c57738a752ff310ccf;hb=cb85c0364fd8323f4bb03c481660805da66aaf85;hp=76f4053a2400e830335b3e1ac4087a9c6381f82c;hpb=fd908da92ccd9aab4ffc3d2463301831260c0474;p=fs%2Flustre-release.git diff --git a/lustre/lmv/lmv_internal.h b/lustre/lmv/lmv_internal.h index 76f4053..daf6a7b 100644 --- a/lustre/lmv/lmv_internal.h +++ b/lustre/lmv/lmv_internal.h @@ -1,22 +1,37 @@ -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: +/* + * GPL HEADER START * - * Copyright (C) 2002, 2003, 2004, 2005, 2006 Cluster File Systems, Inc. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * - * This file is part of Lustre, http://www.lustre.org. + * 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. * - * Lustre is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License 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). * - * Lustre 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 for more details. + * 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 * - * You should have received a copy of the GNU General Public License - * along with Lustre; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * 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_ @@ -24,213 +39,130 @@ #include #include - -#ifndef __KERNEL__ -/* XXX: dirty hack, needs to be fixed more clever way. */ -struct qstr { - const char *name; - size_t len; - unsigned hashval; -}; -#endif +#include #define LMV_MAX_TGT_COUNT 128 -#define lmv_init_lock(lmv) down(&lmv->init_sem); -#define lmv_init_unlock(lmv) up(&lmv->init_sem); +#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") -struct lmv_inode { - struct lu_fid li_fid; /* id of dirobj */ - mdsno_t li_mds; /* cached mdsno where @li_fid lives */ - unsigned long li_size; /* slave size value */ - int li_flags; -}; - -#define O_FREEING (1 << 0) - -struct lmv_obj { - struct list_head lo_list; - struct semaphore lo_guard; - int lo_state; /* object state. */ - atomic_t lo_count; /* ref counter. */ - struct lu_fid lo_fid; /* master id of dir */ - void *lo_update; /* bitmap of status (up-to-date) */ - __u32 lo_hashtype; - int lo_objcount; /* number of slaves */ - struct lmv_inode *lo_inodes; /* array of sub-objs */ - struct obd_device *lo_obd; /* pointer to LMV itself */ -}; - -int lmv_obj_setup(struct obd_device *obd); -void lmv_obj_cleanup(struct obd_device *obd); - -static inline void -lmv_obj_lock(struct lmv_obj *obj) -{ - LASSERT(obj); - down(&obj->lo_guard); -} - -static inline void -lmv_obj_unlock(struct lmv_obj *obj) -{ - LASSERT(obj); - up(&obj->lo_guard); -} - -void lmv_obj_add(struct lmv_obj *obj); -void lmv_obj_del(struct lmv_obj *obj); - -void lmv_obj_put(struct lmv_obj *obj); -void lmv_obj_free(struct lmv_obj *obj); - -struct lmv_obj *lmv_obj_get(struct lmv_obj *obj); - -struct lmv_obj *lmv_obj_grab(struct obd_device *obd, - const struct lu_fid *fid); - -struct lmv_obj *lmv_obj_alloc(struct obd_device *obd, - const struct lu_fid *fid, - struct lmv_stripe_md *mea); - -struct lmv_obj *lmv_obj_create(struct obd_export *exp, - const struct lu_fid *fid, - struct lmv_stripe_md *mea); - -int lmv_obj_delete(struct obd_export *exp, - const struct lu_fid *fid); - int lmv_check_connect(struct obd_device *obd); int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data, - void *lmm, int lmmsize, struct lookup_intent *it, - int flags, struct ptlrpc_request **reqp, - ldlm_blocking_callback cb_blocking, - int extra_lock_flags); - -int lmv_intent_lookup(struct obd_export *exp, struct md_op_data *op_data, - void *lmm, int lmmsize, struct lookup_intent *it, - int flags, struct ptlrpc_request **reqp, - ldlm_blocking_callback cb_blocking, - int extra_lock_flags); - -int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data, - void *lmm, int lmmsize, struct lookup_intent *it, - int flags, struct ptlrpc_request **reqp, - ldlm_blocking_callback cb_blocking, - int extra_lock_flags); - -int lmv_intent_getattr(struct obd_export *exp, struct md_op_data *op_data, - void *lmm, int lmmsize, struct lookup_intent *it, - int flags, struct ptlrpc_request **reqp, - ldlm_blocking_callback cb_blocking, - int extra_lock_flags); - -int lmv_revalidate_slaves(struct obd_export *, struct ptlrpc_request **, - const struct lu_fid *, struct lookup_intent *, int, - ldlm_blocking_callback cb_blocking, - int extra_lock_flags); + struct lookup_intent *it, struct ptlrpc_request **reqp, + ldlm_blocking_callback cb_blocking, + __u64 extra_lock_flags); -int lmv_handle_split(struct obd_export *, const struct lu_fid *); 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(struct obd_export *exp, struct lu_fid *fid, - struct md_op_data *op_data); -int lmv_alloc_slave_fids(struct obd_device *obd, struct lu_fid *pid, - struct md_op_data *op, struct lu_fid *fid); +int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp, + struct lu_fid *fid, struct md_op_data *op_data); -static inline struct lmv_stripe_md * -lmv_get_mea(struct ptlrpc_request *req) -{ - struct mdt_body *body; - struct lmv_stripe_md *mea; +int lmv_unpack_md(struct obd_export *exp, struct lmv_stripe_md **lsmp, + const union lmv_mds_md *lmm, int stripe_count); - LASSERT(req); +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); - body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); +static inline struct lmv_tgt_desc * +lmv_get_target(struct lmv_obd *lmv, mdsno_t mdt_idx, int *index) +{ + int i; - if (!body || !S_ISDIR(body->mode) || !body->eadatasize) - return NULL; + for (i = 0; i < lmv->desc.ld_tgt_count; i++) { + if (lmv->tgts[i] == NULL) + continue; - mea = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD, - body->eadatasize); - LASSERT(mea != NULL); + if (lmv->tgts[i]->ltd_idx == mdt_idx) { + if (index != NULL) + *index = i; + return lmv->tgts[i]; + } + } - if (mea->mea_count == 0) - return NULL; - if( mea->mea_magic != MEA_MAGIC_LAST_CHAR && - mea->mea_magic != MEA_MAGIC_ALL_CHARS && - mea->mea_magic != MEA_MAGIC_HASH_SEGMENT) - return NULL; - - return mea; + return ERR_PTR(-ENODEV); } -static inline int lmv_get_easize(struct lmv_obd *lmv) +static inline int +lmv_find_target_index(struct lmv_obd *lmv, const struct lu_fid *fid) { - return sizeof(struct lmv_stripe_md) + - lmv->desc.ld_tgt_count * - sizeof(struct lu_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; } static inline struct lmv_tgt_desc * -lmv_get_target(struct lmv_obd *lmv, mdsno_t mds) +lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid) { - return &lmv->tgts[mds]; -} + int index; -static inline struct obd_export * -lmv_get_export(struct lmv_obd *lmv, mdsno_t mds) -{ - return lmv_get_target(lmv, mds)->ltd_exp; -} + index = lmv_find_target_index(lmv, fid); + if (index < 0) + return ERR_PTR(index); -static inline struct lmv_tgt_desc * -lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid) -{ - mdsno_t mds; - int rc; - - rc = lmv_fld_lookup(lmv, fid, &mds); - if (rc) - return ERR_PTR(rc); - - return lmv_get_target(lmv, mds); + return lmv->tgts[index]; } -static inline struct obd_export * -lmv_find_export(struct lmv_obd *lmv, const struct lu_fid *fid) +static inline int lmv_stripe_md_size(int stripe_count) { - struct lmv_tgt_desc *tgt = lmv_find_target(lmv, fid); - if (IS_ERR(tgt)) - return (struct obd_export *)tgt; - return tgt->ltd_exp; + struct lmv_stripe_md *lsm; + + return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]); } -static inline void lmv_update_body(struct mdt_body *body, - struct lmv_inode *lino) +int lmv_name_to_stripe_index(enum lmv_hash_type hashtype, + unsigned int max_mdt_index, + const char *name, int namelen); + +static inline const struct lmv_oinfo * +lsm_name_to_stripe_info(const struct lmv_stripe_md *lsm, const char *name, + int namelen) { - /* update object size */ - body->size += lino->li_size; + int stripe_index; + + 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); + + 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); + + return &lsm->lsm_md_oinfo[stripe_index]; } +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 -void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars); -#else -static inline void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars) -{ - memset(lvars, 0, sizeof(*lvars)); -} +extern struct lprocfs_seq_vars lprocfs_lmv_obd_vars[]; #endif extern struct file_operations lmv_proc_target_fops; #endif -