X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Flmv%2Flmv_internal.h;h=7b9aeffc901685ceb2da5694c1e6a5aa41fd1c8c;hb=f9a2da63abab5b8b687842166a0b5b5e434ad441;hp=a8eb88c9c5e9396da718c8b67ac10da79606f8d6;hpb=30f882bb273d5583aae1a41c141b52b85613ce70;p=fs%2Flustre-release.git diff --git a/lustre/lmv/lmv_internal.h b/lustre/lmv/lmv_internal.h index a8eb88c..7b9aeff 100644 --- a/lustre/lmv/lmv_internal.h +++ b/lustre/lmv/lmv_internal.h @@ -1,98 +1,204 @@ +/* + * 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") -#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; - 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 */ -}; - -int lmv_dirobj_blocking_ast(struct ldlm_lock *, - struct ldlm_lock_desc *, - void *, int); - -void lmv_put_obj(struct lmv_obj *obj); -struct lmv_obj *lmv_get_obj(struct lmv_obj *obj); - -int lmv_setup_mgr(struct obd_device *obd); -void lmv_cleanup_mgr(struct obd_device *obd); - -struct lmv_obj *lmv_grab_obj(struct obd_device *obd, - struct ll_fid *fid); - -int lmv_create_obj(struct obd_export *exp, struct ll_fid *fid, - struct mea *mea); - -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_check_connect(struct obd_device *obd); -int lmv_revalidate_slaves(struct obd_export *, struct ptlrpc_request **, - struct ll_fid *, struct lookup_intent *, int, - ldlm_blocking_callback cb_blocking); - -int lmv_get_mea_and_update_object(struct obd_export *, struct ll_fid *); - -static inline struct mea * -is_body_of_splitted_dir(struct ptlrpc_request *req, int offset) +#include +#include + +#define LMV_MAX_TGT_COUNT 128 + +#define LL_IT2STR(it) \ + ((it) ? ldlm_it2str((it)->it_op) : "0") + +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, 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); + +int lmv_revalidate_slaves(struct obd_export *exp, + const struct lu_fid *pfid, + const struct lmv_stripe_md *lsm, + ldlm_blocking_callback cb_blocking, + int extra_lock_flags); + +int lmv_getattr_name(struct obd_export *exp, struct md_op_data *op_data, + struct ptlrpc_request **preq); +void lmv_activate_target(struct lmv_obd *lmv, struct lmv_tgt_desc *tgt, + int activate); + +int lmv_statfs_check_update(struct obd_device *obd, struct lmv_tgt_desc *tgt); + +static inline struct obd_device *lmv2obd_dev(struct lmv_obd *lmv) { - struct mds_body *body; - struct mea *mea; + return container_of_safe(lmv, struct obd_device, u.lmv); +} - LASSERT(req); +static inline struct lu_tgt_desc * +lmv_tgt(struct lmv_obd *lmv, __u32 index) +{ + return index < lmv->lmv_mdt_descs.ltd_tgt_bitmap->size ? + LTD_TGT(&lmv->lmv_mdt_descs, index) : NULL; +} - body = lustre_msg_buf(req->rq_repmsg, offset, sizeof(*body)); +static inline bool +lmv_mdt0_inited(struct lmv_obd *lmv) +{ + return lmv->lmv_mdt_descs.ltd_tgt_bitmap->size > 0 && + cfs_bitmap_check(lmv->lmv_mdt_descs.ltd_tgt_bitmap, 0); +} + +#define lmv_foreach_tgt(lmv, tgt) ltd_foreach_tgt(&(lmv)->lmv_mdt_descs, tgt) + +#define lmv_foreach_tgt_safe(lmv, tgt, tmp) \ + ltd_foreach_tgt_safe(&(lmv)->lmv_mdt_descs, tgt, tmp) - if (!body || !S_ISDIR(body->mode) || !body->eadatasize) - return NULL; +static inline +struct lu_tgt_desc *lmv_first_connected_tgt(struct lmv_obd *lmv) +{ + struct lu_tgt_desc *tgt; - mea = lustre_msg_buf(req->rq_repmsg, offset + 1, body->eadatasize); - LASSERT(mea); + tgt = ltd_first_tgt(&lmv->lmv_mdt_descs); + while (tgt && !tgt->ltd_exp) + tgt = ltd_next_tgt(&lmv->lmv_mdt_descs, tgt); - if (mea->mea_count == 0) - return NULL; - - return mea; + return tgt; } -static inline int fid_equal(struct ll_fid *fid1, struct ll_fid *fid2) +static inline +struct lu_tgt_desc *lmv_next_connected_tgt(struct lmv_obd *lmv, + struct lu_tgt_desc *tgt) { - if (fid1->mds != fid2->mds) - return 0; - if (fid1->id != fid2->id) - return 0; - if (fid1->generation != fid2->generation) - return 0; - return 1; + do { + tgt = ltd_next_tgt(&lmv->lmv_mdt_descs, tgt); + } while (tgt && !tgt->ltd_exp); + + return tgt; } -#endif +#define lmv_foreach_connected_tgt(lmv, tgt) \ + for (tgt = lmv_first_connected_tgt(lmv); tgt; \ + tgt = lmv_next_connected_tgt(lmv, tgt)) + +static inline int +lmv_fid2tgt_index(struct lmv_obd *lmv, const struct lu_fid *fid) +{ + u32 mdt_idx; + int rc; + + if (lmv->lmv_mdt_count < 2) + return 0; + + rc = lmv_fld_lookup(lmv, fid, &mdt_idx); + if (rc < 0) + return rc; + + return mdt_idx; +} +static inline struct lmv_tgt_desc * +lmv_fid2tgt(struct lmv_obd *lmv, const struct lu_fid *fid) +{ + struct lu_tgt_desc *tgt; + int index; + + index = lmv_fid2tgt_index(lmv, fid); + if (index < 0) + return ERR_PTR(index); + + tgt = lmv_tgt(lmv, index); + + return tgt ? tgt : ERR_PTR(-ENODEV); +} + +static inline int lmv_stripe_md_size(int stripe_count) +{ + struct lmv_stripe_md *lsm; + + return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]); +} + +/* for file under migrating directory, return the target stripe info */ +static inline const struct lmv_oinfo * +lsm_name_to_stripe_info(const struct lmv_stripe_md *lsm, const char *name, + int namelen, bool new_layout) +{ + int stripe_index; + + LASSERT(lmv_dir_striped(lsm)); + + stripe_index = __lmv_name_to_stripe_index(lsm->lsm_md_hash_type, + lsm->lsm_md_stripe_count, + lsm->lsm_md_migrate_hash, + lsm->lsm_md_migrate_offset, + name, namelen, new_layout); + if (stripe_index < 0) + return ERR_PTR(stripe_index); + + return &lsm->lsm_md_oinfo[stripe_index]; +} + +static inline bool lmv_dir_retry_check_update(struct md_op_data *op_data) +{ + const struct lmv_stripe_md *lsm = op_data->op_mea1; + + if (!lsm) + return false; + + if (lmv_dir_layout_changing(lsm) && !op_data->op_new_layout) { + op_data->op_new_layout = true; + return true; + } + + if (lmv_dir_bad_hash(lsm) && + op_data->op_stripe_index < lsm->lsm_md_stripe_count - 1) { + op_data->op_stripe_index++; + return true; + } + + return false; +} + +struct lmv_tgt_desc *lmv_locate_tgt(struct lmv_obd *lmv, + struct md_op_data *op_data); +int lmv_old_layout_lookup(struct lmv_obd *lmv, struct md_op_data *op_data); + +/* lproc_lmv.c */ +int lmv_tunables_init(struct obd_device *obd); +#endif