X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Flmv%2Flmv_internal.h;h=3e3b8424941be7a8b6c408883fdc4826f1aae0ab;hb=7d1927ec6e3298c76ff90b4c622f58d6d033ba9b;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..3e3b842 100644 --- a/lustre/lmv/lmv_internal.h +++ b/lustre/lmv/lmv_internal.h @@ -1,144 +1,148 @@ +/* + * 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, 2012, 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 -#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); -} - -static inline void -lmv_unlock_obj(struct lmv_obj *obj) -{ - LASSERT(obj); - up(&obj->guard); -} +#define LMV_MAX_TGT_COUNT 128 -void lmv_add_obj(struct lmv_obj *obj); -void lmv_del_obj(struct lmv_obj *obj); +#define lmv_init_lock(lmv) mutex_lock(&lmv->init_mutex); +#define lmv_init_unlock(lmv) mutex_unlock(&lmv->init_mutex); -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); -struct lmv_obj *lmv_get_obj(struct lmv_obj *obj); - -struct lmv_obj *lmv_grab_obj(struct obd_device *obd, - struct lustre_id *id); - -struct lmv_obj *lmv_alloc_obj(struct obd_device *obd, - struct lustre_id *id, - struct mea *mea); - -struct lmv_obj *lmv_create_obj(struct obd_export *exp, - struct lustre_id *id, - struct mea *mea); - -int lmv_delete_obj(struct obd_export *exp, struct lustre_id *id); +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, + __u64 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, + __u64 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, + __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(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_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); + LASSERT(req != NULL); -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); + body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); -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); + if (!body || !S_ISDIR(body->mode) || !body->eadatasize) + return NULL; -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); + mea = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD, + body->eadatasize); + LASSERT(mea != NULL); -int lmv_revalidate_slaves(struct obd_export *, struct ptlrpc_request **, - struct lustre_id *, struct lookup_intent *, int, - ldlm_blocking_callback cb_blocking); + 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; -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 mea; +} -static inline struct mea * -lmv_splitted_dir_body(struct ptlrpc_request *req, int offset) +static inline int lmv_get_easize(struct lmv_obd *lmv) { - struct mds_body *body; - struct mea *mea; - - LASSERT(req); - - body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body)); - - if (!body || !S_ISDIR(body->mode) || !body->eadatasize) - return NULL; - - mea = lustre_msg_buf(req->rq_repmsg, offset + 1, - body->eadatasize); - LASSERT(mea); + return sizeof(struct lmv_stripe_md) + + lmv->desc.ld_tgt_count * + sizeof(struct lu_fid); +} - if (mea->mea_count == 0) - return NULL; - - return mea; +static inline struct lmv_tgt_desc * +lmv_get_target(struct lmv_obd *lmv, mdsno_t mds) +{ + return &lmv->tgts[mds]; } -/* 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 struct lmv_tgt_desc * +lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid) { - if (id1->li_fid.lf_group != id2->li_fid.lf_group) - return 0; + mdsno_t mds = 0; + int rc; + + if (lmv->desc.ld_tgt_count > 1) { + rc = lmv_fld_lookup(lmv, fid, &mds); + if (rc) + return ERR_PTR(rc); + } - if (id1->li_fid.lf_id != id2->li_fid.lf_id) - return 0; - - return 1; + return lmv_get_target(lmv, mds); } +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)); +} +#endif extern struct file_operations lmv_proc_target_fops; #endif -