/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: * * 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) 2007, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. */ /* * This file is part of Lustre, http://www.lustre.org/ * Lustre is a trademark of Sun Microsystems, Inc. * * lustre/mdt/mdt_internal.h * * Lustre Metadata Target (mdt) request handler * * Author: Peter Braam * Author: Andreas Dilger * Author: Phil Schwan * Author: Mike Shaver * Author: Nikita Danilov * Author: Huang Hua */ #ifndef _MDT_INTERNAL_H #define _MDT_INTERNAL_H #if defined(__KERNEL__) /* * struct ptlrpc_client */ #include #include /* * struct obd_connect_data * struct lustre_handle */ #include #include #include #include #include #include #include #include #include #include #include #include /* check if request's xid is equal to last one or not*/ static inline int req_xid_is_last(struct ptlrpc_request *req) { struct lsd_client_data *lcd = req->rq_export->exp_target_data.ted_lcd; return (req->rq_xid == lcd->lcd_last_xid || req->rq_xid == lcd->lcd_last_close_xid); } struct mdt_object; /* file data for open files on MDS */ struct mdt_file_data { struct portals_handle mfd_handle; /* must be first */ cfs_list_t mfd_list; /* protected by med_open_lock */ __u64 mfd_xid; /* xid of the open request */ struct lustre_handle mfd_old_handle; /* old handle in replay case */ int mfd_mode; /* open mode provided by client */ struct mdt_object *mfd_object; /* point to opened object */ }; /* mdt state flag bits */ #define MDT_FL_CFGLOG 0 #define MDT_FL_SYNCED 1 struct mdt_device { /* super-class */ struct md_device mdt_md_dev; struct ptlrpc_service *mdt_regular_service; struct ptlrpc_service *mdt_readpage_service; struct ptlrpc_service *mdt_xmds_service; struct ptlrpc_service *mdt_setattr_service; struct ptlrpc_service *mdt_mdsc_service; struct ptlrpc_service *mdt_mdss_service; struct ptlrpc_service *mdt_dtss_service; struct ptlrpc_service *mdt_fld_service; /* DLM name-space for meta-data locks maintained by this server */ struct ldlm_namespace *mdt_namespace; /* ptlrpc handle for MDS->client connections (for lock ASTs). */ struct ptlrpc_client *mdt_ldlm_client; /* underlying device */ struct md_device *mdt_child; struct dt_device *mdt_bottom; /** target device */ struct lu_target mdt_lut; /* * Options bit-fields. */ struct { signed int mo_user_xattr :1, mo_acl :1, mo_compat_resname:1, mo_mds_capa :1, mo_oss_capa :1, mo_cos :1; } mdt_opts; /* mdt state flags */ unsigned long mdt_state; /* lock to protect IOepoch */ cfs_spinlock_t mdt_ioepoch_lock; __u64 mdt_ioepoch; /* transaction callbacks */ struct dt_txn_callback mdt_txn_cb; /* these values should be updated from lov if necessary. * or should be placed somewhere else. */ int mdt_max_mdsize; int mdt_max_cookiesize; struct upcall_cache *mdt_identity_cache; /* sptlrpc rules */ cfs_rwlock_t mdt_sptlrpc_lock; struct sptlrpc_rule_set mdt_sptlrpc_rset; /* capability keys */ unsigned long mdt_capa_timeout; __u32 mdt_capa_alg; struct dt_object *mdt_ck_obj; unsigned long mdt_ck_timeout; unsigned long mdt_ck_expiry; cfs_timer_t mdt_ck_timer; struct ptlrpc_thread mdt_ck_thread; struct lustre_capa_key mdt_capa_keys[2]; unsigned int mdt_capa_conf:1, mdt_som_conf:1; /* root squash */ uid_t mdt_squash_uid; gid_t mdt_squash_gid; cfs_list_t mdt_nosquash_nids; char *mdt_nosquash_str; int mdt_nosquash_strlen; cfs_rw_semaphore_t mdt_squash_sem; cfs_proc_dir_entry_t *mdt_proc_entry; struct lprocfs_stats *mdt_stats; int mdt_sec_level; }; #define MDT_SERVICE_WATCHDOG_FACTOR (2) #define MDT_ROCOMPAT_SUPP (OBD_ROCOMPAT_LOVOBJID) #define MDT_INCOMPAT_SUPP (OBD_INCOMPAT_MDT | OBD_INCOMPAT_COMMON_LR | \ OBD_INCOMPAT_FID | OBD_INCOMPAT_IAM_DIR) #define MDT_COS_DEFAULT (0) struct mdt_object { struct lu_object_header mot_header; struct md_object mot_obj; __u64 mot_ioepoch; __u64 mot_flags; int mot_ioepoch_count; int mot_writecount; /* Lock to protect object's IO epoch. */ cfs_semaphore_t mot_ioepoch_sem; }; enum mdt_object_flags { /** SOM attributes are changed. */ MOF_SOM_CHANGE = (1 << 0), /** * The SOM recovery state for mdt object. * This state is an in-memory equivalent of an absent SOM EA, used * instead of invalidating SOM EA while IOEpoch is still opened when * a client eviction occurs or a client fails to obtain SOM attributes. * It indicates that the last IOEpoch holder will need to obtain SOM * attributes under [0;EOF] extent lock to flush all the client's * cached of evicted from MDS clients (but not necessary evicted from * OST) before taking ost attributes. */ MOF_SOM_RECOV = (1 << 1), /** File has been just created. */ MOF_SOM_CREATED = (1 << 2), }; struct mdt_lock_handle { /* Lock type, reg for cross-ref use or pdo lock. */ mdl_type_t mlh_type; /* Regular lock */ struct lustre_handle mlh_reg_lh; ldlm_mode_t mlh_reg_mode; /* Pdirops lock */ struct lustre_handle mlh_pdo_lh; ldlm_mode_t mlh_pdo_mode; unsigned int mlh_pdo_hash; }; enum { MDT_LH_PARENT, /* parent lockh */ MDT_LH_CHILD, /* child lockh */ MDT_LH_OLD, /* old lockh for rename */ MDT_LH_NEW, /* new lockh for rename */ MDT_LH_RMT, /* used for return lh to caller */ MDT_LH_NR }; enum { MDT_LOCAL_LOCK, MDT_CROSS_LOCK }; struct mdt_reint_record { mdt_reint_t rr_opcode; const struct lustre_handle *rr_handle; const struct lu_fid *rr_fid1; const struct lu_fid *rr_fid2; const char *rr_name; int rr_namelen; const char *rr_tgt; int rr_tgtlen; const void *rr_eadata; int rr_eadatalen; int rr_logcookielen; const struct llog_cookie *rr_logcookies; __u32 rr_flags; }; enum mdt_reint_flag { MRF_SETATTR_LOCKED = 1 << 0, }; /* * Common data shared by mdt-level handlers. This is allocated per-thread to * reduce stack consumption. */ struct mdt_thread_info { /* * XXX: Part One: * The following members will be filled explicitly * with specific data in mdt_thread_info_init(). */ /* TODO: move this into mdt_session_key(with LCT_SESSION), because * request handling may migrate from one server thread to another. */ struct req_capsule *mti_pill; /* although we have export in req, there are cases when it is not * available, e.g. closing files upon export destroy */ struct obd_export *mti_exp; /* * A couple of lock handles. */ struct mdt_lock_handle mti_lh[MDT_LH_NR]; struct mdt_device *mti_mdt; const struct lu_env *mti_env; /* * Additional fail id that can be set by handler. Passed to * target_send_reply(). */ int mti_fail_id; /* transaction number of current request */ __u64 mti_transno; /* * XXX: Part Two: * The following members will be filled expilictly * with zero in mdt_thread_info_init(). These members may be used * by all requests. */ /* * Object attributes. */ struct md_attr mti_attr; /* * Body for "habeo corpus" operations. */ const struct mdt_body *mti_body; /* * Host object. This is released at the end of mdt_handler(). */ struct mdt_object *mti_object; /* * Lock request for "habeo clavis" operations. */ const struct ldlm_request *mti_dlm_req; __u32 mti_has_trans:1, /* has txn already? */ mti_no_need_trans:1, mti_cross_ref:1; /* opdata for mdt_reint_open(), has the same as * ldlm_reply:lock_policy_res1. mdt_update_last_rcvd() stores this * value onto disk for recovery when mdt_trans_stop_cb() is called. */ __u64 mti_opdata; /* * XXX: Part Three: * The following members will be filled explicitly * with zero in mdt_reint_unpack(), because they are only used * by reint requests (including mdt_reint_open()). */ /* * reint record. contains information for reint operations. */ struct mdt_reint_record mti_rr; /** md objects included in operation */ struct mdt_object *mti_mos; __u64 mti_ver[PTLRPC_NUM_VERSIONS]; /* * Operation specification (currently create and lookup) */ struct md_op_spec mti_spec; /* * XXX: Part Four: * The following members will _NOT_ be initialized at all. * DO NOT expect them to contain any valid value. * They should be initialized explicitly by the user themselves. */ /* XXX: If something is in a union, make sure they do not conflict */ struct lu_fid mti_tmp_fid1; struct lu_fid mti_tmp_fid2; ldlm_policy_data_t mti_policy; /* for mdt_object_lock() and * mdt_rename_lock() */ struct ldlm_res_id mti_res_id; /* for mdt_object_lock() and mdt_rename_lock() */ union { struct obd_uuid uuid[2]; /* for mdt_seq_init_cli() */ char ns_name[48]; /* for mdt_init0() */ struct lustre_cfg_bufs bufs; /* for mdt_stack_fini() */ cfs_kstatfs_t ksfs; /* for mdt_statfs() */ struct { /* for mdt_readpage() */ struct lu_rdpg mti_rdpg; /* for mdt_sendpage() */ struct l_wait_info mti_wait_info; } rdpg; struct { struct md_attr attr; struct md_som_data data; } som; } mti_u; /* IO epoch related stuff. */ struct mdt_ioepoch *mti_ioepoch; __u64 mti_replayepoch; /* server and client data buffers */ struct lr_server_data mti_lsd; struct lsd_client_data mti_lcd; loff_t mti_off; struct txn_param mti_txn_param; struct lu_buf mti_buf; struct lustre_capa_key mti_capa_key; /* Ops object filename */ struct lu_name mti_name; struct md_attr mti_tmp_attr; }; typedef void (*mdt_cb_t)(const struct mdt_device *mdt, __u64 transno, void *data, int err); struct mdt_commit_cb { mdt_cb_t mdt_cb_func; void *mdt_cb_data; }; enum mdt_txn_op { MDT_TXN_CAPA_KEYS_WRITE_OP, MDT_TXN_LAST_RCVD_WRITE_OP, }; /* * Info allocated per-transaction. */ #define MDT_MAX_COMMIT_CB 4 struct mdt_txn_info { __u64 txi_transno; unsigned int txi_cb_count; struct lut_commit_cb txi_cb[MDT_MAX_COMMIT_CB]; }; extern struct lu_context_key mdt_txn_key; static inline void mdt_trans_add_cb(const struct thandle *th, lut_cb_t cb_func, void *cb_data) { struct mdt_txn_info *txi; txi = lu_context_key_get(&th->th_ctx, &mdt_txn_key); LASSERT(txi->txi_cb_count < ARRAY_SIZE(txi->txi_cb)); /* add new callback */ txi->txi_cb[txi->txi_cb_count].lut_cb_func = cb_func; txi->txi_cb[txi->txi_cb_count].lut_cb_data = cb_data; txi->txi_cb_count++; } static inline const struct md_device_operations * mdt_child_ops(struct mdt_device * m) { LASSERT(m->mdt_child); return m->mdt_child->md_ops; } static inline struct md_object *mdt_object_child(struct mdt_object *o) { LASSERT(o); return lu2md(lu_object_next(&o->mot_obj.mo_lu)); } static inline struct ptlrpc_request *mdt_info_req(struct mdt_thread_info *info) { return info->mti_pill ? info->mti_pill->rc_req : NULL; } static inline int req_is_replay(struct ptlrpc_request *req) { LASSERT(req->rq_reqmsg); return !!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY); } static inline __u64 mdt_conn_flags(struct mdt_thread_info *info) { LASSERT(info->mti_exp); return info->mti_exp->exp_connect_flags; } static inline void mdt_object_get(const struct lu_env *env, struct mdt_object *o) { ENTRY; lu_object_get(&o->mot_obj.mo_lu); EXIT; } static inline void mdt_object_put(const struct lu_env *env, struct mdt_object *o) { ENTRY; lu_object_put(env, &o->mot_obj.mo_lu); EXIT; } static inline int mdt_object_exists(const struct mdt_object *o) { return lu_object_exists(&o->mot_obj.mo_lu); } static inline const struct lu_fid *mdt_object_fid(struct mdt_object *o) { return lu_object_fid(&o->mot_obj.mo_lu); } static inline struct lu_site *mdt_lu_site(const struct mdt_device *mdt) { return mdt->mdt_md_dev.md_lu_dev.ld_site; } static inline struct md_site *mdt_md_site(const struct mdt_device *mdt) { return lu_site2md(mdt_lu_site(mdt)); } static inline void mdt_export_evict(struct obd_export *exp) { class_fail_export(exp); class_export_put(exp); } int mdt_get_disposition(struct ldlm_reply *rep, int flag); void mdt_set_disposition(struct mdt_thread_info *info, struct ldlm_reply *rep, int flag); void mdt_clear_disposition(struct mdt_thread_info *info, struct ldlm_reply *rep, int flag); void mdt_lock_pdo_init(struct mdt_lock_handle *lh, ldlm_mode_t lm, const char *name, int namelen); void mdt_lock_reg_init(struct mdt_lock_handle *lh, ldlm_mode_t lm); int mdt_lock_setup(struct mdt_thread_info *info, struct mdt_object *o, struct mdt_lock_handle *lh); int mdt_object_lock(struct mdt_thread_info *, struct mdt_object *, struct mdt_lock_handle *, __u64, int); void mdt_object_unlock(struct mdt_thread_info *, struct mdt_object *, struct mdt_lock_handle *, int decref); struct mdt_object *mdt_object_find(const struct lu_env *, struct mdt_device *, const struct lu_fid *); struct mdt_object *mdt_object_find_lock(struct mdt_thread_info *, const struct lu_fid *, struct mdt_lock_handle *, __u64); void mdt_object_unlock_put(struct mdt_thread_info *, struct mdt_object *, struct mdt_lock_handle *, int decref); int mdt_close_unpack(struct mdt_thread_info *info); int mdt_reint_unpack(struct mdt_thread_info *info, __u32 op); int mdt_reint_rec(struct mdt_thread_info *, struct mdt_lock_handle *); void mdt_pack_attr2body(struct mdt_thread_info *info, struct mdt_body *b, const struct lu_attr *attr, const struct lu_fid *fid); int mdt_getxattr(struct mdt_thread_info *info); int mdt_reint_setxattr(struct mdt_thread_info *info, struct mdt_lock_handle *lh); void mdt_lock_handle_init(struct mdt_lock_handle *lh); void mdt_lock_handle_fini(struct mdt_lock_handle *lh); void mdt_reconstruct(struct mdt_thread_info *, struct mdt_lock_handle *); void mdt_reconstruct_generic(struct mdt_thread_info *mti, struct mdt_lock_handle *lhc); extern void target_recovery_fini(struct obd_device *obd); extern void target_recovery_init(struct lu_target *lut, svc_handler_t handler); int mdt_fs_setup(const struct lu_env *, struct mdt_device *, struct obd_device *, struct lustre_sb_info *lsi); void mdt_fs_cleanup(const struct lu_env *, struct mdt_device *); int mdt_client_del(const struct lu_env *env, struct mdt_device *mdt); int mdt_client_add(const struct lu_env *env, struct mdt_device *mdt, int cl_idx); int mdt_client_new(const struct lu_env *env, struct mdt_device *mdt); int mdt_export_stats_init(struct obd_device *obd, struct obd_export *exp, int reconnect, void *client_nid); int mdt_pin(struct mdt_thread_info* info); int mdt_lock_new_child(struct mdt_thread_info *info, struct mdt_object *o, struct mdt_lock_handle *child_lockh); void mdt_mfd_set_mode(struct mdt_file_data *mfd, int mode); int mdt_reint_open(struct mdt_thread_info *info, struct mdt_lock_handle *lhc); struct mdt_file_data *mdt_handle2mfd(struct mdt_thread_info *, const struct lustre_handle *); enum { MDT_IOEPOCH_CLOSED = 0, MDT_IOEPOCH_OPENED = 1, MDT_IOEPOCH_GETATTR = 2, }; enum { MDT_SOM_DISABLE = 0, MDT_SOM_ENABLE = 1, }; int mdt_ioepoch_open(struct mdt_thread_info *info, struct mdt_object *o, int created); int mdt_object_is_som_enabled(struct mdt_object *mo); int mdt_write_get(struct mdt_object *o); void mdt_write_put(struct mdt_object *o); int mdt_write_read(struct mdt_object *o); struct mdt_file_data *mdt_mfd_new(void); int mdt_mfd_close(struct mdt_thread_info *info, struct mdt_file_data *mfd); void mdt_mfd_free(struct mdt_file_data *mfd); int mdt_close(struct mdt_thread_info *info); int mdt_attr_set(struct mdt_thread_info *info, struct mdt_object *mo, struct md_attr *ma, int flags); int mdt_done_writing(struct mdt_thread_info *info); void mdt_shrink_reply(struct mdt_thread_info *info); int mdt_handle_last_unlink(struct mdt_thread_info *, struct mdt_object *, const struct md_attr *); void mdt_reconstruct_open(struct mdt_thread_info *, struct mdt_lock_handle *); void mdt_trans_credit_init(const struct lu_env *env, struct mdt_device *mdt, enum mdt_txn_op op); struct thandle* mdt_trans_start(const struct lu_env *env, struct mdt_device *mdt); void mdt_trans_stop(const struct lu_env *env, struct mdt_device *mdt, struct thandle *th); int mdt_record_write(const struct lu_env *env, struct dt_object *dt, const struct lu_buf *buf, loff_t *pos, struct thandle *th); int mdt_record_read(const struct lu_env *env, struct dt_object *dt, struct lu_buf *buf, loff_t *pos); struct lu_buf *mdt_buf(const struct lu_env *env, void *area, ssize_t len); const struct lu_buf *mdt_buf_const(const struct lu_env *env, const void *area, ssize_t len); void mdt_dump_lmm(int level, const struct lov_mds_md *lmm); int mdt_check_ucred(struct mdt_thread_info *); int mdt_init_ucred(struct mdt_thread_info *, struct mdt_body *); int mdt_init_ucred_reint(struct mdt_thread_info *); void mdt_exit_ucred(struct mdt_thread_info *); int mdt_version_get_check(struct mdt_thread_info *, struct mdt_object *, int); void mdt_version_get_save(struct mdt_thread_info *, struct mdt_object *, int); int mdt_version_get_check_save(struct mdt_thread_info *, struct mdt_object *, int); /* mdt_idmap.c */ int mdt_init_sec_level(struct mdt_thread_info *); int mdt_init_idmap(struct mdt_thread_info *); void mdt_cleanup_idmap(struct mdt_export_data *); int mdt_handle_idmap(struct mdt_thread_info *); int ptlrpc_user_desc_do_idmap(struct ptlrpc_request *, struct ptlrpc_user_desc *); void mdt_body_reverse_idmap(struct mdt_thread_info *, struct mdt_body *); int mdt_remote_perm_reverse_idmap(struct ptlrpc_request *, struct mdt_remote_perm *); int mdt_fix_attr_ucred(struct mdt_thread_info *, __u32); static inline struct mdt_device *mdt_dev(struct lu_device *d) { // LASSERT(lu_device_is_mdt(d)); return container_of0(d, struct mdt_device, mdt_md_dev.md_lu_dev); } /* mdt/mdt_identity.c */ #define MDT_IDENTITY_UPCALL_PATH "/usr/sbin/l_getidentity" extern struct upcall_cache_ops mdt_identity_upcall_cache_ops; struct md_identity *mdt_identity_get(struct upcall_cache *, __u32); void mdt_identity_put(struct upcall_cache *, struct md_identity *); void mdt_flush_identity(struct upcall_cache *, int); __u32 mdt_identity_get_perm(struct md_identity *, __u32, lnet_nid_t); int mdt_pack_remote_perm(struct mdt_thread_info *, struct mdt_object *, void *); extern struct lu_context_key mdt_thread_key; /* debug issues helper starts here*/ static inline void mdt_fail_write(const struct lu_env *env, struct dt_device *dd, int id) { if (OBD_FAIL_CHECK_ORSET(id, OBD_FAIL_ONCE)) { CERROR(LUSTRE_MDT_NAME": obd_fail_loc=%x, fail write ops\n", id); dd->dd_ops->dt_ro(env, dd); /* We set FAIL_ONCE because we never "un-fail" a device */ } } static inline struct mdt_export_data *mdt_req2med(struct ptlrpc_request *req) { return &req->rq_export->exp_mdt_data; } typedef void (*mdt_reconstruct_t)(struct mdt_thread_info *mti, struct mdt_lock_handle *lhc); static inline int mdt_check_resent(struct mdt_thread_info *info, mdt_reconstruct_t reconstruct, struct mdt_lock_handle *lhc) { struct ptlrpc_request *req = mdt_info_req(info); ENTRY; if (lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT) { if (req_xid_is_last(req)) { reconstruct(info, lhc); RETURN(1); } DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")", req->rq_export->exp_target_data.ted_lcd->lcd_last_xid); } RETURN(0); } struct md_ucred *mdt_ucred(const struct mdt_thread_info *info); static inline int is_identity_get_disabled(struct upcall_cache *cache) { return cache ? (strcmp(cache->uc_upcall, "NONE") == 0) : 1; } int mdt_blocking_ast(struct ldlm_lock*, struct ldlm_lock_desc*, void*, int); /* Issues dlm lock on passed @ns, @f stores it lock handle into @lh. */ static inline int mdt_fid_lock(struct ldlm_namespace *ns, struct lustre_handle *lh, ldlm_mode_t mode, ldlm_policy_data_t *policy, const struct ldlm_res_id *res_id, int flags, const __u64 *client_cookie) { int rc; LASSERT(ns != NULL); LASSERT(lh != NULL); rc = ldlm_cli_enqueue_local(ns, res_id, LDLM_IBITS, policy, mode, &flags, mdt_blocking_ast, ldlm_completion_ast, NULL, NULL, 0, client_cookie, lh); return rc == ELDLM_OK ? 0 : -EIO; } static inline void mdt_fid_unlock(struct lustre_handle *lh, ldlm_mode_t mode) { ldlm_lock_decref(lh, mode); } extern mdl_mode_t mdt_mdl_lock_modes[]; extern ldlm_mode_t mdt_dlm_lock_modes[]; static inline mdl_mode_t mdt_dlm_mode2mdl_mode(ldlm_mode_t mode) { LASSERT(IS_PO2(mode)); return mdt_mdl_lock_modes[mode]; } static inline ldlm_mode_t mdt_mdl_mode2dlm_mode(mdl_mode_t mode) { LASSERT(IS_PO2(mode)); return mdt_dlm_lock_modes[mode]; } static inline struct lu_name *mdt_name(const struct lu_env *env, char *name, int namelen) { struct lu_name *lname; struct mdt_thread_info *mti; LASSERT(namelen > 0); /* trailing '\0' in buffer */ LASSERT(name[namelen] == '\0'); mti = lu_context_key_get(&env->le_ctx, &mdt_thread_key); lname = &mti->mti_name; lname->ln_name = name; lname->ln_namelen = namelen; return lname; } static inline struct lu_name *mdt_name_copy(struct lu_name *tlname, struct lu_name *slname) { LASSERT(tlname); LASSERT(slname); tlname->ln_name = slname->ln_name; tlname->ln_namelen = slname->ln_namelen; return tlname; } void mdt_enable_cos(struct mdt_device *, int); int mdt_cos_is_enabled(struct mdt_device *); int mdt_hsm_copytool_send(struct obd_export *exp); /* lprocfs stuff */ enum { LPROC_MDT_OPEN = 0, LPROC_MDT_CLOSE, LPROC_MDT_MKNOD, LPROC_MDT_LINK, LPROC_MDT_UNLINK, LPROC_MDT_MKDIR, LPROC_MDT_RMDIR, LPROC_MDT_RENAME, LPROC_MDT_GETXATTR, LPROC_MDT_SETXATTR, LPROC_MDT_LAST, }; void mdt_counter_incr(struct obd_export *exp, int opcode); void mdt_stats_counter_init(struct lprocfs_stats *stats); void lprocfs_mdt_init_vars(struct lprocfs_static_vars *lvars); int mdt_procfs_init(struct mdt_device *mdt, const char *name); int mdt_procfs_fini(struct mdt_device *mdt); void mdt_time_start(const struct mdt_thread_info *info); void mdt_time_end(const struct mdt_thread_info *info, int idx); /* Capability */ int mdt_ck_thread_start(struct mdt_device *mdt); void mdt_ck_thread_stop(struct mdt_device *mdt); void mdt_ck_timer_callback(unsigned long castmeharder); int mdt_capa_keys_init(const struct lu_env *env, struct mdt_device *mdt); static inline void mdt_set_capainfo(struct mdt_thread_info *info, int offset, const struct lu_fid *fid, struct lustre_capa *capa) { struct md_capainfo *ci; LASSERT(offset >= 0 && offset <= MD_CAPAINFO_MAX); if (!info->mti_mdt->mdt_opts.mo_mds_capa || !(info->mti_exp->exp_connect_flags & OBD_CONNECT_MDS_CAPA)) return; ci = md_capainfo(info->mti_env); LASSERT(ci); ci->mc_fid[offset] = fid; ci->mc_capa[offset] = capa; } static inline void mdt_dump_capainfo(struct mdt_thread_info *info) { struct md_capainfo *ci = md_capainfo(info->mti_env); int i; if (!ci) return; for (i = 0; i < MD_CAPAINFO_MAX; i++) { if (!ci->mc_fid[i]) continue; if (!ci->mc_capa[i]) { CERROR("no capa for index %d "DFID"\n", i, PFID(ci->mc_fid[i])); continue; } if (ci->mc_capa[i] == BYPASS_CAPA) { CERROR("bypass for index %d "DFID"\n", i, PFID(ci->mc_fid[i])); continue; } DEBUG_CAPA(D_ERROR, ci->mc_capa[i], "index %d", i); } } static inline struct obd_device *mdt2obd_dev(const struct mdt_device *mdt) { return mdt->mdt_md_dev.md_lu_dev.ld_obd; } #endif /* __KERNEL__ */ #endif /* _MDT_H */