/* * 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) 2003, 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 LOV_INTERNAL_H #define LOV_INTERNAL_H #include #include #include struct lov_lock_handles { struct portals_handle llh_handle; cfs_atomic_t llh_refcount; int llh_stripe_count; struct lustre_handle llh_handles[0]; }; struct lov_request { struct obd_info rq_oi; struct lov_request_set *rq_rqset; cfs_list_t rq_link; int rq_idx; /* index in lov->tgts array */ int rq_stripe; /* stripe number */ int rq_complete; int rq_rc; int rq_buflen; /* length of sub_md */ obd_count rq_oabufs; obd_count rq_pgaidx; }; struct lov_request_set { struct ldlm_enqueue_info *set_ei; struct obd_info *set_oi; cfs_atomic_t set_refcount; struct obd_export *set_exp; /* XXX: There is @set_exp already, however obd_statfs gets obd_device only. */ struct obd_device *set_obd; int set_count; cfs_atomic_t set_completes; cfs_atomic_t set_success; cfs_atomic_t set_finish_checked; struct llog_cookie *set_cookies; int set_cookie_sent; struct obd_trans_info *set_oti; obd_count set_oabufs; struct brw_page *set_pga; struct lov_lock_handles *set_lockh; cfs_list_t set_list; cfs_waitq_t set_waitq; spinlock_t set_lock; }; extern cfs_mem_cache_t *lov_oinfo_slab; void lov_finish_set(struct lov_request_set *set); static inline void lov_get_reqset(struct lov_request_set *set) { LASSERT(set != NULL); LASSERT(cfs_atomic_read(&set->set_refcount) > 0); cfs_atomic_inc(&set->set_refcount); } static inline void lov_put_reqset(struct lov_request_set *set) { if (cfs_atomic_dec_and_test(&set->set_refcount)) lov_finish_set(set); } static inline struct lov_lock_handles * lov_handle2llh(struct lustre_handle *handle) { LASSERT(handle != NULL); return(class_handle2object(handle->cookie)); } static inline void lov_llh_put(struct lov_lock_handles *llh) { CDEBUG(D_INFO, "PUTting llh %p : new refcount %d\n", llh, cfs_atomic_read(&llh->llh_refcount) - 1); LASSERT(cfs_atomic_read(&llh->llh_refcount) > 0 && cfs_atomic_read(&llh->llh_refcount) < 0x5a5a); if (cfs_atomic_dec_and_test(&llh->llh_refcount)) { class_handle_unhash(&llh->llh_handle); /* The structure may be held by other threads because RCU. * -jxiong */ if (cfs_atomic_read(&llh->llh_refcount)) return; OBD_FREE_RCU(llh, sizeof *llh + sizeof(*llh->llh_handles) * llh->llh_stripe_count, &llh->llh_handle); } } #define lov_uuid2str(lv, index) \ (char *)((lv)->lov_tgts[index]->ltd_uuid.uuid) /* lov_merge.c */ void lov_merge_attrs(struct obdo *tgt, struct obdo *src, obd_valid valid, struct lov_stripe_md *lsm, int stripeno, int *set); int lov_merge_lvb(struct obd_export *exp, struct lov_stripe_md *lsm, struct ost_lvb *lvb, int kms_only); int lov_adjust_kms(struct obd_export *exp, struct lov_stripe_md *lsm, obd_off size, int shrink); int lov_merge_lvb_kms(struct lov_stripe_md *lsm, struct ost_lvb *lvb, __u64 *kms_place); /* lov_offset.c */ obd_size lov_stripe_size(struct lov_stripe_md *lsm, obd_size ost_size, int stripeno); int lov_stripe_offset(struct lov_stripe_md *lsm, obd_off lov_off, int stripeno, obd_off *obd_off); obd_off lov_size_to_stripe(struct lov_stripe_md *lsm, obd_off file_size, int stripeno); int lov_stripe_intersects(struct lov_stripe_md *lsm, int stripeno, obd_off start, obd_off end, obd_off *obd_start, obd_off *obd_end); int lov_stripe_number(struct lov_stripe_md *lsm, obd_off lov_off); /* lov_qos.c */ #define LOV_USES_ASSIGNED_STRIPE 0 #define LOV_USES_DEFAULT_STRIPE 1 int qos_add_tgt(struct obd_device *obd, __u32 index); int qos_del_tgt(struct obd_device *obd, struct lov_tgt_desc *tgt); void qos_shrink_lsm(struct lov_request_set *set); int qos_prep_create(struct obd_export *exp, struct lov_request_set *set); void qos_update(struct lov_obd *lov); void qos_statfs_done(struct lov_obd *lov); void qos_statfs_update(struct obd_device *obd, __u64 max_age, int wait); int qos_remedy_create(struct lov_request_set *set, struct lov_request *req); /* lov_request.c */ void lov_set_add_req(struct lov_request *req, struct lov_request_set *set); int lov_set_finished(struct lov_request_set *set, int idempotent); void lov_update_set(struct lov_request_set *set, struct lov_request *req, int rc); int lov_update_common_set(struct lov_request_set *set, struct lov_request *req, int rc); int lov_check_and_wait_active(struct lov_obd *lov, int ost_idx); int lov_prep_create_set(struct obd_export *exp, struct obd_info *oifo, struct lov_stripe_md **ea, struct obdo *src_oa, struct obd_trans_info *oti, struct lov_request_set **reqset); int cb_create_update(void *cookie, int rc); int lov_fini_create_set(struct lov_request_set *set, struct lov_stripe_md **ea); int lov_prep_brw_set(struct obd_export *exp, struct obd_info *oinfo, obd_count oa_bufs, struct brw_page *pga, struct obd_trans_info *oti, struct lov_request_set **reqset); int lov_fini_brw_set(struct lov_request_set *set); int lov_prep_getattr_set(struct obd_export *exp, struct obd_info *oinfo, struct lov_request_set **reqset); int lov_fini_getattr_set(struct lov_request_set *set); int lov_prep_destroy_set(struct obd_export *exp, struct obd_info *oinfo, struct obdo *src_oa, struct lov_stripe_md *lsm, struct obd_trans_info *oti, struct lov_request_set **reqset); int lov_update_destroy_set(struct lov_request_set *set, struct lov_request *req, int rc); int lov_fini_destroy_set(struct lov_request_set *set); int lov_prep_setattr_set(struct obd_export *exp, struct obd_info *oinfo, struct obd_trans_info *oti, struct lov_request_set **reqset); int lov_update_setattr_set(struct lov_request_set *set, struct lov_request *req, int rc); int lov_fini_setattr_set(struct lov_request_set *set); int lov_prep_punch_set(struct obd_export *exp, struct obd_info *oinfo, struct obd_trans_info *oti, struct lov_request_set **reqset); int lov_fini_punch_set(struct lov_request_set *set); int lov_prep_sync_set(struct obd_export *exp, struct obd_info *obd_info, obd_off start, obd_off end, struct lov_request_set **reqset); int lov_fini_sync_set(struct lov_request_set *set); int lov_prep_enqueue_set(struct obd_export *exp, struct obd_info *oinfo, struct ldlm_enqueue_info *einfo, struct lov_request_set **reqset); int lov_fini_enqueue_set(struct lov_request_set *set, __u32 mode, int rc, struct ptlrpc_request_set *rqset); int lov_prep_match_set(struct obd_export *exp, struct obd_info *oinfo, struct lov_stripe_md *lsm, ldlm_policy_data_t *policy, __u32 mode, struct lustre_handle *lockh, struct lov_request_set **reqset); int lov_fini_match_set(struct lov_request_set *set, __u32 mode, int flags); int lov_prep_cancel_set(struct obd_export *exp, struct obd_info *oinfo, struct lov_stripe_md *lsm, __u32 mode, struct lustre_handle *lockh, struct lov_request_set **reqset); int lov_fini_cancel_set(struct lov_request_set *set); int lov_prep_statfs_set(struct obd_device *obd, struct obd_info *oinfo, struct lov_request_set **reqset); void lov_update_statfs(struct obd_statfs *osfs, struct obd_statfs *lov_sfs, int success); int lov_fini_statfs(struct obd_device *obd, struct obd_statfs *osfs, int success); int lov_fini_statfs_set(struct lov_request_set *set); int lov_statfs_interpret(struct ptlrpc_request_set *rqset, void *data, int rc); /* lov_obd.c */ void lov_fix_desc(struct lov_desc *desc); void lov_fix_desc_stripe_size(__u64 *val); void lov_fix_desc_stripe_count(__u32 *val); void lov_fix_desc_pattern(__u32 *val); void lov_fix_desc_qos_maxage(__u32 *val); __u16 lov_get_stripecnt(struct lov_obd *lov, __u32 magic, __u16 stripe_count); int lov_connect_obd(struct obd_device *obd, __u32 index, int activate, struct obd_connect_data *data); int lov_setup(struct obd_device *obd, struct lustre_cfg *lcfg); int lov_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg, __u32 *indexp, int *genp); int lov_del_target(struct obd_device *obd, __u32 index, struct obd_uuid *uuidp, int gen); /* lov_log.c */ int lov_llog_init(struct obd_device *obd, struct obd_llog_group *olg, struct obd_device *tgt, int *idx); int lov_llog_finish(struct obd_device *obd, int count); /* lov_pack.c */ int lov_packmd(struct obd_export *exp, struct lov_mds_md **lmm, struct lov_stripe_md *lsm); int lov_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp, struct lov_mds_md *lmm, int lmm_bytes); int lov_setstripe(struct obd_export *exp, int max_lmm_size, struct lov_stripe_md **lsmp, struct lov_user_md *lump); int lov_setea(struct obd_export *exp, struct lov_stripe_md **lsmp, struct lov_user_md *lump); int lov_getstripe(struct obd_export *exp, struct lov_stripe_md *lsm, struct lov_user_md *lump); int lov_alloc_memmd(struct lov_stripe_md **lsmp, __u16 stripe_count, int pattern, int magic); int lov_free_memmd(struct lov_stripe_md **lsmp); void lov_dump_lmm_v1(int level, struct lov_mds_md_v1 *lmm); void lov_dump_lmm_v3(int level, struct lov_mds_md_v3 *lmm); void lov_dump_lmm_common(int level, void *lmmp); void lov_dump_lmm(int level, void *lmm); /* lov_ea.c */ struct lov_stripe_md *lsm_alloc_plain(__u16 stripe_count, int *size); void lsm_free_plain(struct lov_stripe_md *lsm); int lovea_destroy_object(struct lov_obd *lov, struct lov_stripe_md *lsm, struct obdo *oa, void *data); /* lproc_lov.c */ extern struct file_operations lov_proc_target_fops; #ifdef LPROCFS void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars); #else static inline void lprocfs_lov_init_vars(struct lprocfs_static_vars *lvars) { memset(lvars, 0, sizeof(*lvars)); } #endif /* lov_cl.c */ extern struct lu_device_type lov_device_type; /* pools */ extern cfs_hash_ops_t pool_hash_operations; /* ost_pool methods */ int lov_ost_pool_init(struct ost_pool *op, unsigned int count); int lov_ost_pool_extend(struct ost_pool *op, unsigned int min_count); int lov_ost_pool_add(struct ost_pool *op, __u32 idx, unsigned int min_count); int lov_ost_pool_remove(struct ost_pool *op, __u32 idx); int lov_ost_pool_free(struct ost_pool *op); /* high level pool methods */ int lov_pool_new(struct obd_device *obd, char *poolname); int lov_pool_del(struct obd_device *obd, char *poolname); int lov_pool_add(struct obd_device *obd, char *poolname, char *ostname); int lov_pool_remove(struct obd_device *obd, char *poolname, char *ostname); void lov_dump_pool(int level, struct pool_desc *pool); struct pool_desc *lov_find_pool(struct lov_obd *lov, char *poolname); int lov_check_index_in_pool(__u32 idx, struct pool_desc *pool); void lov_pool_putref(struct pool_desc *pool); static inline struct lov_stripe_md *lsm_addref(struct lov_stripe_md *lsm) { LASSERT(cfs_atomic_read(&lsm->lsm_refc) > 0); cfs_atomic_inc(&lsm->lsm_refc); return lsm; } #endif