| /* |
| * 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, 2012, 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 <obd_class.h> |
| #include <obd_lov.h> |
| #include <lustre/lustre_user.h> |
| |
| struct lov_lock_handles { |
| struct portals_handle llh_handle; |
| 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; |
| |
| struct list_head 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; |
| 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; |
| atomic_t set_completes; |
| atomic_t set_success; |
| 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; |
| struct list_head set_list; |
| wait_queue_head_t set_waitq; |
| spinlock_t set_lock; |
| }; |
| |
| extern struct kmem_cache *lov_oinfo_slab; |
| |
| extern struct lu_kmem_descr lov_caches[]; |
| |
| void lov_finish_set(struct lov_request_set *set); |
| |
| static inline void lov_get_reqset(struct lov_request_set *set) |
| { |
| LASSERT(set != NULL); |
| LASSERT(atomic_read(&set->set_refcount) > 0); |
| atomic_inc(&set->set_refcount); |
| } |
| |
| static inline void lov_put_reqset(struct lov_request_set *set) |
| { |
| if (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, |
| atomic_read(&llh->llh_refcount) - 1); |
| LASSERT(atomic_read(&llh->llh_refcount) > 0 && |
| atomic_read(&llh->llh_refcount) < 0x5a5a); |
| if (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 (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(atomic_read(&lsm->lsm_refc) > 0); |
| atomic_inc(&lsm->lsm_refc); |
| return lsm; |
| } |
| |
| #endif |