X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Flmv%2Flmv_internal.h;h=981e271794c1454bbb989e2e100ae02fa2c551ec;hb=8e2f5a3a919073a91dd987e36f15678cf0cbdbc8;hp=c56cae29d24587927287a06d91a80db7f5b5dcda;hpb=e44e9b278432a1df83482b1cd83b2081fabe94dc;p=fs%2Flustre-release.git diff --git a/lustre/lmv/lmv_internal.h b/lustre/lmv/lmv_internal.h index c56cae2..981e271 100644 --- a/lustre/lmv/lmv_internal.h +++ b/lustre/lmv/lmv_internal.h @@ -1,89 +1,257 @@ +/* + * 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, Whamcloud, Inc. + */ +/* + * 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") -#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; +#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") + +struct lmv_stripe { + /** + * Dir stripe fid. + */ + struct lu_fid ls_fid; + /** + * Cached home mds number for \a li_fid. + */ + mdsno_t ls_mds; + /** + * Stripe object size. + */ + unsigned long ls_size; + /** + * Stripe flags. + */ + int ls_flags; }; -struct lmv_obj { - struct list_head list; - 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 */ +#define O_FREEING (1 << 0) + +struct lmv_object { + /** + * Link to global objects list. + */ + cfs_list_t lo_list; + /** + * Sema for protecting fields. + */ + struct mutex lo_guard; + /** + * Object state like O_FREEING. + */ + int lo_state; + /** + * Object ref counter. + */ + cfs_atomic_t lo_count; + /** + * Object master fid. + */ + struct lu_fid lo_fid; + /** + * Object hash type to find stripe by name. + */ + __u32 lo_hashtype; + /** + * Number of stripes. + */ + int lo_objcount; + /** + * Array of sub-objs. + */ + struct lmv_stripe *lo_stripes; + /** + * Pointer to LMV obd. + */ + struct obd_device *lo_obd; }; -int lmv_dirobj_blocking_ast(struct ldlm_lock *, - struct ldlm_lock_desc *, void *, int); -struct lmv_obj *lmv_grab_obj(struct obd_device *obd, - struct ll_fid *fid, int create); -void lmv_put_obj(struct lmv_obj *obj); - -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); -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); -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); -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); -int lmv_create_obj_from_attrs(struct obd_export *, struct ll_fid *, - struct mea *); +int lmv_object_setup(struct obd_device *obd); +void lmv_object_cleanup(struct obd_device *obd); + +static inline void +lmv_object_lock(struct lmv_object *obj) +{ + LASSERT(obj); + mutex_lock(&obj->lo_guard); +} + +static inline void +lmv_object_unlock(struct lmv_object *obj) +{ + LASSERT(obj); + mutex_unlock(&obj->lo_guard); +} + +void lmv_object_add(struct lmv_object *obj); +void lmv_object_del(struct lmv_object *obj); + +void lmv_object_put(struct lmv_object *obj); +void lmv_object_put_unlock(struct lmv_object *obj); +void lmv_object_free(struct lmv_object *obj); + +struct lmv_object *lmv_object_get(struct lmv_object *obj); + +struct lmv_object *lmv_object_find(struct obd_device *obd, + const struct lu_fid *fid); + +struct lmv_object *lmv_object_find_lock(struct obd_device *obd, + const struct lu_fid *fid); + +struct lmv_object *lmv_object_alloc(struct obd_device *obd, + const struct lu_fid *fid, + struct lmv_stripe_md *mea); + +struct lmv_object *lmv_object_create(struct obd_export *exp, + const struct lu_fid *fid, + struct lmv_stripe_md *mea); + +int lmv_object_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, + __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_allocate_slaves(struct obd_device *obd, struct lu_fid *pid, + struct md_op_data *op, struct lu_fid *fid); + int lmv_revalidate_slaves(struct obd_export *, struct ptlrpc_request **, - struct ll_fid *, struct lookup_intent *, int, - ldlm_blocking_callback cb_blocking); -void lmv_cleanup_objs(struct obd_device *obd); -int lmv_get_mea_and_update_object(struct obd_export *, struct ll_fid *); + const struct lu_fid *, struct lookup_intent *, int, + 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); -static inline struct mea * -is_body_of_splitted_dir(struct ptlrpc_request *req, int offset) +static inline struct lmv_stripe_md *lmv_get_mea(struct ptlrpc_request *req) { - struct mds_body *body; - struct mea *mea; + struct mdt_body *body; + struct lmv_stripe_md *mea; + + LASSERT(req != NULL); - LASSERT(req); + body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); - body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body)); + if (!body || !S_ISDIR(body->mode) || !body->eadatasize) + return NULL; - if (!body || !S_ISDIR(body->mode) || !body->eadatasize) - return NULL; + mea = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD, + body->eadatasize); + LASSERT(mea != NULL); - mea = lustre_msg_buf(req->rq_repmsg, offset + 1, body->eadatasize); - LASSERT(mea); + 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; - if (mea->mea_count == 0) - return NULL; - - return mea; + return mea; } -static inline int fid_equal(struct ll_fid *fid1, struct ll_fid *fid2) +static inline int lmv_get_easize(struct lmv_obd *lmv) { - if (fid1->mds != fid2->mds) - return 0; - if (fid1->id != fid2->id) - return 0; - if (fid1->generation != fid2->generation) - return 0; - return 1; + return sizeof(struct lmv_stripe_md) + + lmv->desc.ld_tgt_count * + sizeof(struct lu_fid); } +static inline struct lmv_tgt_desc * +lmv_get_target(struct lmv_obd *lmv, mdsno_t mds) +{ + return &lmv->tgts[mds]; +} + +static inline struct lmv_tgt_desc * +lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid) +{ + 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); + } + + return lmv_get_target(lmv, mds); +} + +/* 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