/* * 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. * * 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 __OBD_H #define __OBD_H #if defined(__linux__) #include #elif defined(__APPLE__) #include #elif defined(__WINNT__) #include #else #error Unsupported operating system. #endif #define IOC_OSC_TYPE 'h' #define IOC_OSC_MIN_NR 20 #define IOC_OSC_SET_ACTIVE _IOWR(IOC_OSC_TYPE, 21, struct obd_device *) #define IOC_OSC_MAX_NR 50 #define IOC_MDC_TYPE 'i' #define IOC_MDC_MIN_NR 20 #define IOC_MDC_MAX_NR 50 #include #include #include #ifdef HAVE_SERVER_SUPPORT # include # include #endif #include #include #include #include #include #define MAX_OBD_DEVICES 8192 struct osc_async_rc { int ar_rc; int ar_force_sync; __u64 ar_min_xid; }; struct lov_oinfo { /* per-stripe data structure */ struct ost_id loi_oi; /* object ID/Sequence on the target OST */ int loi_ost_idx; /* OST stripe index in lov_tgt_desc->tgts */ int loi_ost_gen; /* generation of this loi_ost_idx */ unsigned long loi_kms_valid:1; __u64 loi_kms; /* known minimum size */ struct ost_lvb loi_lvb; struct osc_async_rc loi_ar; }; static inline void loi_kms_set(struct lov_oinfo *oinfo, __u64 kms) { oinfo->loi_kms = kms; oinfo->loi_kms_valid = 1; } static inline void loi_init(struct lov_oinfo *loi) { } struct lov_stripe_md { cfs_atomic_t lsm_refc; spinlock_t lsm_lock; pid_t lsm_lock_owner; /* debugging */ /* maximum possible file size, might change as OSTs status changes, * e.g. disconnected, deactivated */ __u64 lsm_maxbytes; struct { /* Public members. */ struct ost_id lw_object_oi; /* lov object id/seq */ /* LOV-private members start here -- only for use in lov/. */ __u32 lw_magic; __u32 lw_stripe_size; /* size of the stripe */ __u32 lw_pattern; /* striping pattern (RAID0, RAID1) */ __u16 lw_stripe_count; /* number of objects being striped over */ __u16 lw_layout_gen; /* generation of the layout */ char lw_pool_name[LOV_MAXPOOLNAME]; /* pool name */ } lsm_wire; struct lov_oinfo *lsm_oinfo[0]; }; #define lsm_oi lsm_wire.lw_object_oi #define lsm_magic lsm_wire.lw_magic #define lsm_layout_gen lsm_wire.lw_layout_gen #define lsm_stripe_size lsm_wire.lw_stripe_size #define lsm_pattern lsm_wire.lw_pattern #define lsm_stripe_count lsm_wire.lw_stripe_count #define lsm_pool_name lsm_wire.lw_pool_name static inline bool lsm_is_released(struct lov_stripe_md *lsm) { return !!(lsm->lsm_pattern & LOV_PATTERN_F_RELEASED); } static inline bool lsm_has_objects(struct lov_stripe_md *lsm) { if (lsm == NULL) return false; if (lsm_is_released(lsm)) return false; return true; } struct obd_info; typedef int (*obd_enqueue_update_f)(void *cookie, int rc); /* obd info for a particular level (lov, osc). */ struct obd_info { /* Lock policy. It keeps an extent which is specific for a particular * OSC. (e.g. lov_prep_enqueue_set initialises extent of the policy, * and osc_enqueue passes it into ldlm_lock_match & ldlm_cli_enqueue. */ ldlm_policy_data_t oi_policy; /* Flags used for set request specific flags: - while lock handling, the flags obtained on the enqueue request are set here. - while stats, the flags used for control delay/resend. - while setattr, the flags used for distinguish punch operation */ __u64 oi_flags; /* Lock handle specific for every OSC lock. */ struct lustre_handle *oi_lockh; /* lsm data specific for every OSC. */ struct lov_stripe_md *oi_md; /* obdo data specific for every OSC, if needed at all. */ struct obdo *oi_oa; /* statfs data specific for every OSC, if needed at all. */ struct obd_statfs *oi_osfs; /* An update callback which is called to update some data on upper * level. E.g. it is used for update lsm->lsm_oinfo at every recieved * request in osc level for enqueue requests. It is also possible to * update some caller data from LOV layer if needed. */ obd_enqueue_update_f oi_cb_up; /* oss capability, its type is obd_capa in client to avoid copy. * in contrary its type is lustre_capa in OSS. */ void *oi_capa; /* transfer jobid from ost_sync() to filter_sync()... */ char *oi_jobid; }; /* compare all relevant fields. */ static inline int lov_stripe_md_cmp(struct lov_stripe_md *m1, struct lov_stripe_md *m2) { /* * ->lsm_wire contains padding, but it should be zeroed out during * allocation. */ return memcmp(&m1->lsm_wire, &m2->lsm_wire, sizeof m1->lsm_wire); } static inline int lov_lum_lsm_cmp(struct lov_user_md *lum, struct lov_stripe_md *lsm) { if (lsm->lsm_magic != lum->lmm_magic) return 1; if ((lsm->lsm_stripe_count != 0) && (lum->lmm_stripe_count != 0) && (lsm->lsm_stripe_count != lum->lmm_stripe_count)) return 2; if ((lsm->lsm_stripe_size != 0) && (lum->lmm_stripe_size != 0) && (lsm->lsm_stripe_size != lum->lmm_stripe_size)) return 3; if ((lsm->lsm_pattern != 0) && (lum->lmm_pattern != 0) && (lsm->lsm_pattern != lum->lmm_pattern)) return 4; if ((lsm->lsm_magic == LOV_MAGIC_V3) && (strncmp(lsm->lsm_pool_name, ((struct lov_user_md_v3 *)lum)->lmm_pool_name, LOV_MAXPOOLNAME) != 0)) return 5; return 0; } static inline int lov_lum_swab_if_needed(struct lov_user_md_v3 *lumv3, int *lmm_magic, struct lov_user_md *lum) { if (lum && copy_from_user(lumv3, lum, sizeof(struct lov_user_md_v1))) return -EFAULT; *lmm_magic = lumv3->lmm_magic; if (*lmm_magic == __swab32(LOV_USER_MAGIC_V1)) { lustre_swab_lov_user_md_v1((struct lov_user_md_v1 *)lumv3); *lmm_magic = LOV_USER_MAGIC_V1; } else if (*lmm_magic == LOV_USER_MAGIC_V3) { if (lum && copy_from_user(lumv3, lum, sizeof(*lumv3))) return -EFAULT; } else if (*lmm_magic == __swab32(LOV_USER_MAGIC_V3)) { if (lum && copy_from_user(lumv3, lum, sizeof(*lumv3))) return -EFAULT; lustre_swab_lov_user_md_v3(lumv3); *lmm_magic = LOV_USER_MAGIC_V3; } else if (*lmm_magic != LOV_USER_MAGIC_V1) { CDEBUG(D_IOCTL, "bad userland LOV MAGIC: %#08x != %#08x nor %#08x\n", *lmm_magic, LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3); return -EINVAL; } return 0; } void lov_stripe_lock(struct lov_stripe_md *md); void lov_stripe_unlock(struct lov_stripe_md *md); struct obd_type { cfs_list_t typ_chain; struct obd_ops *typ_dt_ops; struct md_ops *typ_md_ops; cfs_proc_dir_entry_t *typ_procroot; char *typ_name; int typ_refcnt; struct lu_device_type *typ_lu; spinlock_t obd_type_lock; }; struct brw_page { obd_off off; struct page *pg; int count; obd_flag flag; }; /* llog contexts */ enum llog_ctxt_id { LLOG_CONFIG_ORIG_CTXT = 0, LLOG_CONFIG_REPL_CTXT, LLOG_MDS_OST_ORIG_CTXT, LLOG_MDS_OST_REPL_CTXT, LLOG_SIZE_ORIG_CTXT, LLOG_SIZE_REPL_CTXT, LLOG_RD1_ORIG_CTXT, LLOG_RD1_REPL_CTXT, LLOG_TEST_ORIG_CTXT, LLOG_TEST_REPL_CTXT, LLOG_LOVEA_ORIG_CTXT, LLOG_LOVEA_REPL_CTXT, LLOG_CHANGELOG_ORIG_CTXT, /**< changelog generation on mdd */ LLOG_CHANGELOG_REPL_CTXT, /**< changelog access on clients */ LLOG_CHANGELOG_USER_ORIG_CTXT, /**< for multiple changelog consumers */ LLOG_AGENT_ORIG_CTXT, /**< agent requests generation on cdt */ LLOG_MAX_CTXTS }; struct timeout_item { enum timeout_event ti_event; cfs_time_t ti_timeout; timeout_cb_t ti_cb; void *ti_cb_data; cfs_list_t ti_obd_list; cfs_list_t ti_chain; }; #define OSC_MAX_RIF_DEFAULT 8 #define MDS_OSC_MAX_RIF_DEFAULT 50 #define OSC_MAX_RIF_MAX 256 #define OSC_MAX_DIRTY_DEFAULT (OSC_MAX_RIF_DEFAULT * 4) #define OSC_MAX_DIRTY_MB_MAX 2048 /* arbitrary, but < MAX_LONG bytes */ #define OSC_DEFAULT_RESENDS 10 /* possible values for fo_sync_lock_cancel */ enum { NEVER_SYNC_ON_CANCEL = 0, BLOCKING_SYNC_ON_CANCEL = 1, ALWAYS_SYNC_ON_CANCEL = 2, NUM_SYNC_ON_CANCEL_STATES }; #define MDC_MAX_RIF_DEFAULT 8 #define MDC_MAX_RIF_MAX 512 struct mdc_rpc_lock; struct obd_import; struct client_obd { struct rw_semaphore cl_sem; struct obd_uuid cl_target_uuid; struct obd_import *cl_import; /* ptlrpc connection state */ int cl_conn_count; /* max_mds_easize is purely a performance thing so we don't have to * call obd_size_diskmd() all the time. */ int cl_default_mds_easize; int cl_max_mds_easize; int cl_max_mds_cookiesize; enum lustre_sec_part cl_sp_me; enum lustre_sec_part cl_sp_to; struct sptlrpc_flavor cl_flvr_mgc; /* fixed flavor of mgc->mgs */ /* the grant values are protected by loi_list_lock below */ long cl_dirty; /* all _dirty_ in bytes */ long cl_dirty_max; /* allowed w/o rpc */ long cl_dirty_transit; /* dirty synchronous */ long cl_avail_grant; /* bytes of credit for ost */ long cl_lost_grant; /* lost credits (trunc) */ /* since we allocate grant by blocks, we don't know how many grant will * be used to add a page into cache. As a solution, we reserve maximum * grant before trying to dirty a page and unreserve the rest. * See osc_{reserve|unreserve}_grant for details. */ long cl_reserved_grant; cfs_list_t cl_cache_waiters; /* waiting for cache/grant */ cfs_time_t cl_next_shrink_grant; /* jiffies */ cfs_list_t cl_grant_shrink_list; /* Timeout event list */ int cl_grant_shrink_interval; /* seconds */ /* A chunk is an optimal size used by osc_extent to determine * the extent size. A chunk is max(PAGE_CACHE_SIZE, OST block size) */ int cl_chunkbits; int cl_chunk; int cl_extent_tax; /* extent overhead, by bytes */ /* keep track of objects that have lois that contain pages which * have been queued for async brw. this lock also protects the * lists of osc_client_pages that hang off of the loi */ /* * ->cl_loi_list_lock protects consistency of * ->cl_loi_{ready,read,write}_list. ->ap_make_ready() and * ->ap_completion() call-backs are executed under this lock. As we * cannot guarantee that these call-backs never block on all platforms * (as a matter of fact they do block on Mac OS X), type of * ->cl_loi_list_lock is platform dependent: it's a spin-lock on Linux * and blocking mutex on Mac OS X. (Alternative is to make this lock * blocking everywhere, but we don't want to slow down fast-path of * our main platform.) * * Exact type of ->cl_loi_list_lock is defined in arch/obd.h together * with client_obd_list_{un,}lock() and * client_obd_list_lock_{init,done}() functions. * * NB by Jinshan: though field names are still _loi_, but actually * osc_object{}s are in the list. */ client_obd_lock_t cl_loi_list_lock; cfs_list_t cl_loi_ready_list; cfs_list_t cl_loi_hp_ready_list; cfs_list_t cl_loi_write_list; cfs_list_t cl_loi_read_list; int cl_r_in_flight; int cl_w_in_flight; /* just a sum of the loi/lop pending numbers to be exported by /proc */ cfs_atomic_t cl_pending_w_pages; cfs_atomic_t cl_pending_r_pages; __u32 cl_max_pages_per_rpc; int cl_max_rpcs_in_flight; struct obd_histogram cl_read_rpc_hist; struct obd_histogram cl_write_rpc_hist; struct obd_histogram cl_read_page_hist; struct obd_histogram cl_write_page_hist; struct obd_histogram cl_read_offset_hist; struct obd_histogram cl_write_offset_hist; /* lru for osc caching pages */ struct cl_client_cache *cl_cache; cfs_list_t cl_lru_osc; /* member of cl_cache->ccc_lru */ cfs_atomic_t *cl_lru_left; cfs_atomic_t cl_lru_busy; cfs_atomic_t cl_lru_shrinkers; cfs_atomic_t cl_lru_in_list; cfs_list_t cl_lru_list; /* lru page list */ client_obd_lock_t cl_lru_list_lock; /* page list protector */ /* number of in flight destroy rpcs is limited to max_rpcs_in_flight */ cfs_atomic_t cl_destroy_in_flight; cfs_waitq_t cl_destroy_waitq; struct mdc_rpc_lock *cl_rpc_lock; struct mdc_rpc_lock *cl_close_lock; /* mgc datastruct */ struct semaphore cl_mgc_sem; struct local_oid_storage *cl_mgc_los; struct dt_object *cl_mgc_configs_dir; cfs_atomic_t cl_mgc_refcount; struct obd_export *cl_mgc_mgsexp; /* checksumming for data sent over the network */ unsigned int cl_checksum:1; /* 0 = disabled, 1 = enabled */ /* supported checksum types that are worked out at connect time */ __u32 cl_supp_cksum_types; /* checksum algorithm to be used */ cksum_type_t cl_cksum_type; /* also protected by the poorly named _loi_list_lock lock above */ struct osc_async_rc cl_ar; /* used by quotacheck when the servers are older than 2.4 */ int cl_qchk_stat; /* quotacheck stat of the peer */ #define CL_NOT_QUOTACHECKED 1 /* client->cl_qchk_stat init value */ #if LUSTRE_VERSION_CODE >= OBD_OCD_VERSION(2, 7, 50, 0) #warning "please consider removing quotacheck compatibility code" #endif /* sequence manager */ struct lu_client_seq *cl_seq; cfs_atomic_t cl_resends; /* resend count */ /* ptlrpc work for writeback in ptlrpcd context */ void *cl_writeback_work; /* hash tables for osc_quota_info */ cfs_hash_t *cl_quota_hash[MAXQUOTAS]; }; #define obd2cli_tgt(obd) ((char *)(obd)->u.cli.cl_target_uuid.uuid) struct obd_id_info { __u32 idx; obd_id *data; }; struct echo_client_obd { struct obd_export *ec_exp; /* the local connection to osc/lov */ spinlock_t ec_lock; cfs_list_t ec_objects; cfs_list_t ec_locks; int ec_nstripes; __u64 ec_unique; }; struct lov_qos_oss { struct obd_uuid lqo_uuid; /* ptlrpc's c_remote_uuid */ cfs_list_t lqo_oss_list; /* link to lov_qos */ __u64 lqo_bavail; /* total bytes avail on OSS */ __u64 lqo_penalty; /* current penalty */ __u64 lqo_penalty_per_obj;/* penalty decrease every obj*/ time_t lqo_used; /* last used time, seconds */ __u32 lqo_ost_count; /* number of osts on this oss */ }; struct ltd_qos { struct lov_qos_oss *ltq_oss; /* oss info */ __u64 ltq_penalty; /* current penalty */ __u64 ltq_penalty_per_obj; /* penalty decrease every obj*/ __u64 ltq_weight; /* net weighting */ time_t ltq_used; /* last used time, seconds */ unsigned int ltq_usable:1; /* usable for striping */ }; /* Generic subset of OSTs */ struct ost_pool { __u32 *op_array; /* array of index of lov_obd->lov_tgts */ unsigned int op_count; /* number of OSTs in the array */ unsigned int op_size; /* allocated size of lp_array */ struct rw_semaphore op_rw_sem; /* to protect ost_pool use */ }; /* Round-robin allocator data */ struct lov_qos_rr { __u32 lqr_start_idx; /* start index of new inode */ __u32 lqr_offset_idx; /* aliasing for start_idx */ int lqr_start_count; /* reseed counter */ struct ost_pool lqr_pool; /* round-robin optimized list */ unsigned long lqr_dirty:1; /* recalc round-robin list */ }; /* allow statfs data caching for 1 second */ #define OBD_STATFS_CACHE_SECONDS 1 struct lov_statfs_data { struct obd_info lsd_oi; struct obd_statfs lsd_statfs; }; /* Stripe placement optimization */ struct lov_qos { cfs_list_t lq_oss_list; /* list of OSSs that targets use */ struct rw_semaphore lq_rw_sem; __u32 lq_active_oss_count; unsigned int lq_prio_free; /* priority for free space */ unsigned int lq_threshold_rr;/* priority for rr */ struct lov_qos_rr lq_rr; /* round robin qos data */ unsigned long lq_dirty:1, /* recalc qos data */ lq_same_space:1,/* the ost's all have approx. the same space avail */ lq_reset:1, /* zero current penalties */ lq_statfs_in_progress:1; /* statfs op in progress */ /* qos statfs data */ struct lov_statfs_data *lq_statfs_data; cfs_waitq_t lq_statfs_waitq; /* waitqueue to notify statfs * requests completion */ }; struct lov_tgt_desc { cfs_list_t ltd_kill; struct obd_uuid ltd_uuid; struct obd_device *ltd_obd; struct obd_export *ltd_exp; struct ltd_qos ltd_qos; /* qos info per target */ __u32 ltd_gen; __u32 ltd_index; /* index in lov_obd->tgts */ unsigned long ltd_active:1,/* is this target up for requests */ ltd_activate:1,/* should target be activated */ ltd_reap:1; /* should this target be deleted */ }; /* Pool metadata */ #define pool_tgt_size(_p) _p->pool_obds.op_size #define pool_tgt_count(_p) _p->pool_obds.op_count #define pool_tgt_array(_p) _p->pool_obds.op_array #define pool_tgt_rw_sem(_p) _p->pool_obds.op_rw_sem struct pool_desc { char pool_name[LOV_MAXPOOLNAME + 1]; /* name of pool */ struct ost_pool pool_obds; /* pool members */ cfs_atomic_t pool_refcount; /* pool ref. counter */ struct lov_qos_rr pool_rr; /* round robin qos */ cfs_hlist_node_t pool_hash; /* access by poolname */ cfs_list_t pool_list; /* serial access */ cfs_proc_dir_entry_t *pool_proc_entry; /* file in /proc */ struct obd_device *pool_lobd; /* obd of the lov/lod to which * this pool belongs */ }; struct lov_obd { struct lov_desc desc; struct lov_tgt_desc **lov_tgts; /* sparse array */ struct ost_pool lov_packed; /* all OSTs in a packed array */ struct mutex lov_lock; struct obd_connect_data lov_ocd; cfs_atomic_t lov_refcount; __u32 lov_tgt_count; /* how many OBD's */ __u32 lov_active_tgt_count; /* how many active */ __u32 lov_death_row;/* tgts scheduled to be deleted */ __u32 lov_tgt_size; /* size of tgts array */ int lov_connects; int lov_pool_count; cfs_hash_t *lov_pools_hash_body; /* used for key access */ cfs_list_t lov_pool_list; /* used for sequential access */ cfs_proc_dir_entry_t *lov_pool_proc_entry; enum lustre_sec_part lov_sp_me; /* Cached LRU pages from upper layer */ void *lov_cache; struct rw_semaphore lov_notify_lock; }; struct lmv_tgt_desc { struct obd_uuid ltd_uuid; struct obd_export *ltd_exp; int ltd_idx; struct mutex ltd_fid_mutex; unsigned long ltd_active:1; /* target up for requests */ }; enum placement_policy { PLACEMENT_CHAR_POLICY = 0, PLACEMENT_NID_POLICY = 1, PLACEMENT_INVAL_POLICY = 2, PLACEMENT_MAX_POLICY }; typedef enum placement_policy placement_policy_t; struct lmv_obd { int refcount; struct lu_client_fld lmv_fld; spinlock_t lmv_lock; placement_policy_t lmv_placement; struct lmv_desc desc; struct obd_uuid cluuid; struct obd_export *exp; struct mutex init_mutex; int connected; int max_easize; int max_def_easize; int max_cookiesize; int server_timeout; int tgts_size; /* size of tgts array */ struct lmv_tgt_desc **tgts; struct obd_connect_data conn_data; }; struct niobuf_local { __u64 lnb_file_offset; __u32 lnb_page_offset; __u32 len; __u32 flags; struct page *page; struct dentry *dentry; int lnb_grant_used; int rc; }; #define LUSTRE_FLD_NAME "fld" #define LUSTRE_SEQ_NAME "seq" #define LUSTRE_MDD_NAME "mdd" #define LUSTRE_OSD_LDISKFS_NAME "osd-ldiskfs" #define LUSTRE_OSD_ZFS_NAME "osd-zfs" #define LUSTRE_VVP_NAME "vvp" #define LUSTRE_LMV_NAME "lmv" #define LUSTRE_SLP_NAME "slp" #define LUSTRE_LOD_NAME "lod" #define LUSTRE_OSP_NAME "osp" #define LUSTRE_LWP_NAME "lwp" /* obd device type names */ /* FIXME all the references to LUSTRE_MDS_NAME should be swapped with LUSTRE_MDT_NAME */ #define LUSTRE_MDS_NAME "mds" #define LUSTRE_MDT_NAME "mdt" #define LUSTRE_MDC_NAME "mdc" #define LUSTRE_OSS_NAME "ost" /* FIXME change name to oss */ #define LUSTRE_OST_NAME "obdfilter" /* FIXME change name to ost */ #define LUSTRE_OSC_NAME "osc" #define LUSTRE_LOV_NAME "lov" #define LUSTRE_MGS_NAME "mgs" #define LUSTRE_MGC_NAME "mgc" #define LUSTRE_ECHO_NAME "obdecho" #define LUSTRE_ECHO_CLIENT_NAME "echo_client" #define LUSTRE_QMT_NAME "qmt" /* Constant obd names (post-rename) */ #define LUSTRE_MDS_OBDNAME "MDS" #define LUSTRE_OSS_OBDNAME "OSS" #define LUSTRE_MGS_OBDNAME "MGS" #define LUSTRE_MGC_OBDNAME "MGC" static inline int is_osp_on_mdt(char *name) { char *ptr; ptr = strrchr(name, '-'); if (ptr == NULL) { CERROR("%s is not a obdname\n", name); return 0; } /* 1.8 OSC/OSP name on MDT is fsname-OSTxxxx-osc */ if (strncmp(ptr + 1, "osc", 3) == 0) return 1; if (strncmp(ptr + 1, "MDT", 3) != 0) return 0; while (*(--ptr) != '-' && ptr != name); if (ptr == name) return 0; if (strncmp(ptr + 1, LUSTRE_OSP_NAME, strlen(LUSTRE_OSP_NAME)) != 0 && strncmp(ptr + 1, LUSTRE_OSC_NAME, strlen(LUSTRE_OSC_NAME)) != 0) return 0; return 1; } /* Don't conflict with on-wire flags OBD_BRW_WRITE, etc */ #define N_LOCAL_TEMP_PAGE 0x10000000 struct obd_trans_info { __u64 oti_transno; __u64 oti_xid; /* Only used on the server side for tracking acks. */ struct oti_req_ack_lock { struct lustre_handle lock; __u32 mode; } oti_ack_locks[4]; void *oti_handle; struct llog_cookie oti_onecookie; struct llog_cookie *oti_logcookies; int oti_numcookies; /** synchronous write is needed */ unsigned long oti_sync_write:1; /* initial thread handling transaction */ struct ptlrpc_thread * oti_thread; __u32 oti_conn_cnt; /** VBR: versions */ __u64 oti_pre_version; /** JobID */ char *oti_jobid; struct obd_uuid *oti_ost_uuid; }; static inline void oti_init(struct obd_trans_info *oti, struct ptlrpc_request *req) { if (oti == NULL) return; memset(oti, 0, sizeof(*oti)); if (req == NULL) return; oti->oti_xid = req->rq_xid; /** VBR: take versions from request */ if (req->rq_reqmsg != NULL && lustre_msg_get_flags(req->rq_reqmsg) & MSG_REPLAY) { __u64 *pre_version = lustre_msg_get_versions(req->rq_reqmsg); oti->oti_pre_version = pre_version ? pre_version[0] : 0; oti->oti_transno = lustre_msg_get_transno(req->rq_reqmsg); } /** called from mds_create_objects */ if (req->rq_repmsg != NULL) oti->oti_transno = lustre_msg_get_transno(req->rq_repmsg); oti->oti_thread = req->rq_svc_thread; if (req->rq_reqmsg != NULL) oti->oti_conn_cnt = lustre_msg_get_conn_cnt(req->rq_reqmsg); } static inline void oti_alloc_cookies(struct obd_trans_info *oti,int num_cookies) { if (!oti) return; if (num_cookies == 1) oti->oti_logcookies = &oti->oti_onecookie; else OBD_ALLOC_LARGE(oti->oti_logcookies, num_cookies * sizeof(oti->oti_onecookie)); oti->oti_numcookies = num_cookies; } static inline void oti_free_cookies(struct obd_trans_info *oti) { if (!oti || !oti->oti_logcookies) return; if (oti->oti_logcookies == &oti->oti_onecookie) LASSERT(oti->oti_numcookies == 1); else OBD_FREE_LARGE(oti->oti_logcookies, oti->oti_numcookies*sizeof(oti->oti_onecookie)); oti->oti_logcookies = NULL; oti->oti_numcookies = 0; } /* * Events signalled through obd_notify() upcall-chain. */ enum obd_notify_event { /* target added */ OBD_NOTIFY_CREATE, /* Device connect start */ OBD_NOTIFY_CONNECT, /* Device activated */ OBD_NOTIFY_ACTIVE, /* Device deactivated */ OBD_NOTIFY_INACTIVE, /* Device disconnected */ OBD_NOTIFY_DISCON, /* Connect data for import were changed */ OBD_NOTIFY_OCD, /* Sync request */ OBD_NOTIFY_SYNC_NONBLOCK, OBD_NOTIFY_SYNC, /* Configuration event */ OBD_NOTIFY_CONFIG, /* Administratively deactivate/activate event */ OBD_NOTIFY_DEACTIVATE, OBD_NOTIFY_ACTIVATE }; /* bit-mask flags for config events */ enum config_flags { CONFIG_LOG = 0x1, /* finished processing config log */ CONFIG_SYNC = 0x2, /* mdt synced 1 ost */ CONFIG_TARGET = 0x4 /* one target is added */ }; /* * Data structure used to pass obd_notify()-event to non-obd listeners (llite * and liblustre being main examples). */ struct obd_notify_upcall { int (*onu_upcall)(struct obd_device *host, struct obd_device *watched, enum obd_notify_event ev, void *owner, void *data); /* Opaque datum supplied by upper layer listener */ void *onu_owner; }; struct target_recovery_data { svc_handler_t trd_recovery_handler; pid_t trd_processing_task; struct completion trd_starting; struct completion trd_finishing; }; struct obd_llog_group { int olg_seq; struct llog_ctxt *olg_ctxts[LLOG_MAX_CTXTS]; cfs_waitq_t olg_waitq; spinlock_t olg_lock; struct mutex olg_cat_processing; }; /* corresponds to one of the obd's */ #define OBD_DEVICE_MAGIC 0XAB5CD6EF #define OBD_DEV_BY_DEVNAME 0xffffd0de struct obd_device { struct obd_type *obd_type; __u32 obd_magic; /* common and UUID name of this device */ char obd_name[MAX_OBD_NAME]; struct obd_uuid obd_uuid; struct lu_device *obd_lu_dev; int obd_minor; /* bitfield modification is protected by obd_dev_lock */ unsigned long obd_attached:1, /* finished attach */ obd_set_up:1, /* finished setup */ obd_recovering:1, /* there are recoverable clients */ obd_abort_recovery:1,/* recovery expired */ obd_version_recov:1, /* obd uses version checking */ obd_replayable:1, /* recovery is enabled; inform clients */ obd_no_transno:1, /* no committed-transno notification */ obd_no_recov:1, /* fail instead of retry messages */ obd_stopping:1, /* started cleanup */ obd_starting:1, /* started setup */ obd_force:1, /* cleanup with > 0 obd refcount */ obd_fail:1, /* cleanup with failover */ obd_async_recov:1, /* allow asynchronous orphan cleanup */ obd_no_conn:1, /* deny new connections */ obd_inactive:1, /* device active/inactive * (for /proc/status only!!) */ obd_no_ir:1, /* no imperative recovery. */ obd_process_conf:1; /* device is processing mgs config */ /* use separate field as it is set in interrupt to don't mess with * protection of other bits using _bh lock */ unsigned long obd_recovery_expired:1; /* uuid-export hash body */ cfs_hash_t *obd_uuid_hash; /* nid-export hash body */ cfs_hash_t *obd_nid_hash; /* nid stats body */ cfs_hash_t *obd_nid_stats_hash; cfs_list_t obd_nid_stats; cfs_atomic_t obd_refcount; cfs_waitq_t obd_refcount_waitq; cfs_list_t obd_exports; cfs_list_t obd_unlinked_exports; cfs_list_t obd_delayed_exports; int obd_num_exports; spinlock_t obd_nid_lock; struct ldlm_namespace *obd_namespace; struct ptlrpc_client obd_ldlm_client; /* XXX OST/MDS only */ /* a spinlock is OK for what we do now, may need a semaphore later */ spinlock_t obd_dev_lock; /* protect OBD bitfield above */ struct mutex obd_dev_mutex; __u64 obd_last_committed; struct fsfilt_operations *obd_fsops; spinlock_t obd_osfs_lock; struct obd_statfs obd_osfs; /* locked by obd_osfs_lock */ __u64 obd_osfs_age; struct lvfs_run_ctxt obd_lvfs_ctxt; struct obd_llog_group obd_olg; /* default llog group */ struct obd_device *obd_observer; struct rw_semaphore obd_observer_link_sem; struct obd_notify_upcall obd_upcall; struct obd_export *obd_self_export; /* list of exports in LRU order, for ping evictor, with obd_dev_lock */ cfs_list_t obd_exports_timed; time_t obd_eviction_timer; /* for ping evictor */ int obd_max_recoverable_clients; cfs_atomic_t obd_connected_clients; int obd_stale_clients; int obd_delayed_clients; /* this lock protects all recovery list_heads, timer and * obd_next_recovery_transno value */ spinlock_t obd_recovery_task_lock; __u64 obd_next_recovery_transno; int obd_replayed_requests; int obd_requests_queued_for_recovery; cfs_waitq_t obd_next_transno_waitq; /* protected by obd_recovery_task_lock */ cfs_timer_t obd_recovery_timer; time_t obd_recovery_start; /* seconds */ time_t obd_recovery_end; /* seconds, for lprocfs_status */ int obd_recovery_time_hard; int obd_recovery_timeout; int obd_recovery_ir_factor; /* new recovery stuff from CMD2 */ struct target_recovery_data obd_recovery_data; int obd_replayed_locks; cfs_atomic_t obd_req_replay_clients; cfs_atomic_t obd_lock_replay_clients; /* all lists are protected by obd_recovery_task_lock */ cfs_list_t obd_req_replay_queue; cfs_list_t obd_lock_replay_queue; cfs_list_t obd_final_req_queue; int obd_recovery_stage; union { #ifdef HAVE_SERVER_SUPPORT struct obd_device_target obt; struct filter_obd filter; struct ost_obd ost; struct echo_obd echo; #endif struct client_obd cli; struct echo_client_obd echo_client; struct lov_obd lov; struct lmv_obd lmv; } u; /* Fields used by LProcFS */ unsigned int obd_cntr_base; struct lprocfs_stats *obd_stats; unsigned int md_cntr_base; struct lprocfs_stats *md_stats; cfs_proc_dir_entry_t *obd_proc_entry; cfs_proc_dir_entry_t *obd_proc_exports_entry; cfs_proc_dir_entry_t *obd_svc_procroot; struct lprocfs_stats *obd_svc_stats; cfs_atomic_t obd_evict_inprogress; cfs_waitq_t obd_evict_inprogress_waitq; cfs_list_t obd_evict_list; /* protected with pet_lock */ /** * Ldlm pool part. Save last calculated SLV and Limit. */ rwlock_t obd_pool_lock; int obd_pool_limit; __u64 obd_pool_slv; /** * A list of outstanding class_incref()'s against this obd. For * debugging. */ struct lu_ref obd_reference; int obd_conn_inprogress; }; #define OBD_LLOG_FL_SENDNOW 0x0001 #define OBD_LLOG_FL_EXIT 0x0002 enum obd_cleanup_stage { /* Special case hack for MDS LOVs */ OBD_CLEANUP_EARLY, /* can be directly mapped to .ldto_device_fini() */ OBD_CLEANUP_EXPORTS, }; /* get/set_info keys */ #define KEY_ASYNC "async" #define KEY_BLOCKSIZE_BITS "blocksize_bits" #define KEY_BLOCKSIZE "blocksize" #define KEY_CAPA_KEY "capa_key" #define KEY_CHANGELOG_CLEAR "changelog_clear" #define KEY_FID2PATH "fid2path" #define KEY_CHECKSUM "checksum" #define KEY_CLEAR_FS "clear_fs" #define KEY_CONN_DATA "conn_data" #define KEY_EVICT_BY_NID "evict_by_nid" #define KEY_FIEMAP "fiemap" #define KEY_FLUSH_CTX "flush_ctx" #define KEY_GRANT_SHRINK "grant_shrink" #define KEY_HSM_COPYTOOL_SEND "hsm_send" #define KEY_INIT_RECOV_BACKUP "init_recov_bk" #define KEY_INIT_RECOV "initial_recov" #define KEY_INTERMDS "inter_mds" #define KEY_LAST_ID "last_id" #define KEY_LAST_FID "last_fid" #define KEY_LOCK_TO_STRIPE "lock_to_stripe" #define KEY_LOVDESC "lovdesc" #define KEY_LOV_IDX "lov_idx" #define KEY_MAX_EASIZE "max_easize" #define KEY_MDS_CONN "mds_conn" #define KEY_MGSSEC "mgssec" #define KEY_NEXT_ID "next_id" #define KEY_READ_ONLY "read-only" #define KEY_REGISTER_TARGET "register_target" #define KEY_SET_FS "set_fs" #define KEY_TGT_COUNT "tgt_count" /* KEY_SET_INFO in lustre_idl.h */ #define KEY_SPTLRPC_CONF "sptlrpc_conf" #define KEY_CONNECT_FLAG "connect_flags" #define KEY_SYNC_LOCK_CANCEL "sync_lock_cancel" #define KEY_CACHE_SET "cache_set" #define KEY_CACHE_LRU_SHRINK "cache_lru_shrink" #define KEY_CHANGELOG_INDEX "changelog_index" struct lu_context; /* /!\ must be coherent with include/linux/namei.h on patched kernel */ #define IT_OPEN (1 << 0) #define IT_CREAT (1 << 1) #define IT_READDIR (1 << 2) #define IT_GETATTR (1 << 3) #define IT_LOOKUP (1 << 4) #define IT_UNLINK (1 << 5) #define IT_TRUNC (1 << 6) #define IT_GETXATTR (1 << 7) #define IT_EXEC (1 << 8) #define IT_PIN (1 << 9) #define IT_LAYOUT (1 << 10) #define IT_QUOTA_DQACQ (1 << 11) #define IT_QUOTA_CONN (1 << 12) static inline int it_to_lock_mode(struct lookup_intent *it) { /* CREAT needs to be tested before open (both could be set) */ if (it->it_op & IT_CREAT) return LCK_CW; else if (it->it_op & (IT_READDIR | IT_GETATTR | IT_OPEN | IT_LOOKUP | IT_LAYOUT)) return LCK_CR; LASSERTF(0, "Invalid it_op: %d\n", it->it_op); return -EINVAL; } struct md_op_data { struct lu_fid op_fid1; /* operation fid1 (usualy parent) */ struct lu_fid op_fid2; /* operation fid2 (usualy child) */ struct lu_fid op_fid3; /* 2 extra fids to find conflicting */ struct lu_fid op_fid4; /* to the operation locks. */ mdsno_t op_mds; /* what mds server open will go to */ struct lustre_handle op_handle; obd_time op_mod_time; const char *op_name; int op_namelen; __u32 op_mode; struct lmv_stripe_md *op_mea1; struct lmv_stripe_md *op_mea2; __u32 op_suppgids[2]; __u32 op_fsuid; __u32 op_fsgid; cfs_cap_t op_cap; void *op_data; /* iattr fields and blocks. */ struct iattr op_attr; #ifdef __KERNEL__ unsigned int op_attr_flags; #endif __u64 op_valid; loff_t op_attr_blocks; /* Size-on-MDS epoch and flags. */ __u64 op_ioepoch; __u32 op_flags; /* Capa fields */ struct obd_capa *op_capa1; struct obd_capa *op_capa2; /* Various operation flags. */ __u32 op_bias; /* Operation type */ __u32 op_opc; /* Used by readdir */ __u64 op_offset; /* Used by readdir */ __u32 op_npages; /* used to transfer info between the stacks of MD client * see enum op_cli_flags */ __u32 op_cli_flags; }; enum op_cli_flags { CLI_SET_MEA = 1 << 0, CLI_RM_ENTRY = 1 << 1, }; struct md_enqueue_info; /* metadata stat-ahead */ typedef int (* md_enqueue_cb_t)(struct ptlrpc_request *req, struct md_enqueue_info *minfo, int rc); struct md_enqueue_info { struct md_op_data mi_data; struct lookup_intent mi_it; struct lustre_handle mi_lockh; struct inode *mi_dir; md_enqueue_cb_t mi_cb; __u64 mi_cbdata; unsigned int mi_generation; }; struct obd_ops { cfs_module_t *o_owner; int (*o_iocontrol)(unsigned int cmd, struct obd_export *exp, int len, void *karg, void *uarg); int (*o_get_info)(const struct lu_env *env, struct obd_export *, __u32 keylen, void *key, __u32 *vallen, void *val, struct lov_stripe_md *lsm); int (*o_set_info_async)(const struct lu_env *, struct obd_export *, __u32 keylen, void *key, __u32 vallen, void *val, struct ptlrpc_request_set *set); int (*o_attach)(struct obd_device *dev, obd_count len, void *data); int (*o_detach)(struct obd_device *dev); int (*o_setup) (struct obd_device *dev, struct lustre_cfg *cfg); int (*o_precleanup)(struct obd_device *dev, enum obd_cleanup_stage cleanup_stage); int (*o_cleanup)(struct obd_device *dev); int (*o_process_config)(struct obd_device *dev, obd_count len, void *data); int (*o_postrecov)(struct obd_device *dev); int (*o_add_conn)(struct obd_import *imp, struct obd_uuid *uuid, int priority); int (*o_del_conn)(struct obd_import *imp, struct obd_uuid *uuid); /* connect to the target device with given connection * data. @ocd->ocd_connect_flags is modified to reflect flags actually * granted by the target, which are guaranteed to be a subset of flags * asked for. If @ocd == NULL, use default parameters. */ int (*o_connect)(const struct lu_env *env, struct obd_export **exp, struct obd_device *src, struct obd_uuid *cluuid, struct obd_connect_data *ocd, void *localdata); int (*o_reconnect)(const struct lu_env *env, struct obd_export *exp, struct obd_device *src, struct obd_uuid *cluuid, struct obd_connect_data *ocd, void *localdata); int (*o_disconnect)(struct obd_export *exp); /* Initialize/finalize fids infrastructure. */ int (*o_fid_init)(struct obd_device *obd, struct obd_export *exp, enum lu_cli_type type); int (*o_fid_fini)(struct obd_device *obd); /* Allocate new fid according to passed @hint. */ int (*o_fid_alloc)(struct obd_export *exp, struct lu_fid *fid, struct md_op_data *op_data); /* * Object with @fid is getting deleted, we may want to do something * about this. */ int (*o_statfs)(const struct lu_env *, struct obd_export *exp, struct obd_statfs *osfs, __u64 max_age, __u32 flags); int (*o_statfs_async)(struct obd_export *exp, struct obd_info *oinfo, __u64 max_age, struct ptlrpc_request_set *set); int (*o_packmd)(struct obd_export *exp, struct lov_mds_md **disk_tgt, struct lov_stripe_md *mem_src); int (*o_unpackmd)(struct obd_export *exp,struct lov_stripe_md **mem_tgt, struct lov_mds_md *disk_src, int disk_len); int (*o_preallocate)(struct lustre_handle *, obd_count *req, obd_id *ids); /* FIXME: add fid capability support for create & destroy! */ int (*o_precreate)(struct obd_export *exp); int (*o_create)(const struct lu_env *env, struct obd_export *exp, struct obdo *oa, struct lov_stripe_md **ea, struct obd_trans_info *oti); int (*o_create_async)(struct obd_export *exp, struct obd_info *oinfo, struct lov_stripe_md **ea, struct obd_trans_info *oti); int (*o_destroy)(const struct lu_env *env, struct obd_export *exp, struct obdo *oa, struct lov_stripe_md *ea, struct obd_trans_info *oti, struct obd_export *md_exp, void *capa); int (*o_setattr)(const struct lu_env *, struct obd_export *exp, struct obd_info *oinfo, struct obd_trans_info *oti); int (*o_setattr_async)(struct obd_export *exp, struct obd_info *oinfo, struct obd_trans_info *oti, struct ptlrpc_request_set *rqset); int (*o_getattr)(const struct lu_env *env, struct obd_export *exp, struct obd_info *oinfo); int (*o_getattr_async)(struct obd_export *exp, struct obd_info *oinfo, struct ptlrpc_request_set *set); int (*o_brw)(int rw, struct obd_export *exp, struct obd_info *oinfo, obd_count oa_bufs, struct brw_page *pgarr, struct obd_trans_info *oti); int (*o_merge_lvb)(struct obd_export *exp, struct lov_stripe_md *lsm, struct ost_lvb *lvb, int kms_only); int (*o_adjust_kms)(struct obd_export *exp, struct lov_stripe_md *lsm, obd_off size, int shrink); int (*o_punch)(const struct lu_env *, struct obd_export *exp, struct obd_info *oinfo, struct obd_trans_info *oti, struct ptlrpc_request_set *rqset); int (*o_sync)(const struct lu_env *env, struct obd_export *exp, struct obd_info *oinfo, obd_size start, obd_size end, struct ptlrpc_request_set *set); int (*o_migrate)(struct lustre_handle *conn, struct lov_stripe_md *dst, struct lov_stripe_md *src, obd_size start, obd_size end, struct obd_trans_info *oti); int (*o_copy)(struct lustre_handle *dstconn, struct lov_stripe_md *dst, struct lustre_handle *srconn, struct lov_stripe_md *src, obd_size start, obd_size end, struct obd_trans_info *); int (*o_iterate)(struct lustre_handle *conn, int (*)(obd_id, obd_seq, void *), obd_id *startid, obd_seq seq, void *data); int (*o_preprw)(const struct lu_env *env, int cmd, struct obd_export *exp, struct obdo *oa, int objcount, struct obd_ioobj *obj, struct niobuf_remote *remote, int *nr_pages, struct niobuf_local *local, struct obd_trans_info *oti, struct lustre_capa *capa); int (*o_commitrw)(const struct lu_env *env, int cmd, struct obd_export *exp, struct obdo *oa, int objcount, struct obd_ioobj *obj, struct niobuf_remote *remote, int pages, struct niobuf_local *local, struct obd_trans_info *oti, int rc); int (*o_enqueue)(struct obd_export *, struct obd_info *oinfo, struct ldlm_enqueue_info *einfo, struct ptlrpc_request_set *rqset); int (*o_change_cbdata)(struct obd_export *, struct lov_stripe_md *, ldlm_iterator_t it, void *data); int (*o_find_cbdata)(struct obd_export *, struct lov_stripe_md *, ldlm_iterator_t it, void *data); int (*o_cancel)(struct obd_export *, struct lov_stripe_md *md, __u32 mode, struct lustre_handle *); int (*o_cancel_unused)(struct obd_export *, struct lov_stripe_md *, ldlm_cancel_flags_t flags, void *opaque); int (*o_init_export)(struct obd_export *exp); int (*o_destroy_export)(struct obd_export *exp); int (*o_extent_calc)(struct obd_export *, struct lov_stripe_md *, int cmd, obd_off *); /* llog related obd_methods */ int (*o_llog_init)(struct obd_device *obd, struct obd_llog_group *grp, struct obd_device *disk_obd, int *idx); int (*o_llog_finish)(struct obd_device *obd, int count); int (*o_llog_connect)(struct obd_export *, struct llogd_conn_body *); /* metadata-only methods */ int (*o_pin)(struct obd_export *, const struct lu_fid *fid, struct obd_capa *, struct obd_client_handle *, int flag); int (*o_unpin)(struct obd_export *, struct obd_client_handle *, int); int (*o_import_event)(struct obd_device *, struct obd_import *, enum obd_import_event); int (*o_notify)(struct obd_device *obd, struct obd_device *watched, enum obd_notify_event ev, void *data); int (*o_health_check)(const struct lu_env *env, struct obd_device *); struct obd_uuid *(*o_get_uuid) (struct obd_export *exp); /* quota methods */ int (*o_quotacheck)(struct obd_device *, struct obd_export *, struct obd_quotactl *); int (*o_quotactl)(struct obd_device *, struct obd_export *, struct obd_quotactl *); int (*o_ping)(const struct lu_env *, struct obd_export *exp); /* pools methods */ int (*o_pool_new)(struct obd_device *obd, char *poolname); int (*o_pool_del)(struct obd_device *obd, char *poolname); int (*o_pool_add)(struct obd_device *obd, char *poolname, char *ostname); int (*o_pool_rem)(struct obd_device *obd, char *poolname, char *ostname); void (*o_getref)(struct obd_device *obd); void (*o_putref)(struct obd_device *obd); /* * NOTE: If adding ops, add another LPROCFS_OBD_OP_INIT() line * to lprocfs_alloc_obd_stats() in obdclass/lprocfs_status.c. * Also, add a wrapper function in include/linux/obd_class.h. */ }; enum { LUSTRE_OPC_MKDIR = (1 << 0), LUSTRE_OPC_SYMLINK = (1 << 1), LUSTRE_OPC_MKNOD = (1 << 2), LUSTRE_OPC_CREATE = (1 << 3), LUSTRE_OPC_ANY = (1 << 4) }; /* lmv structures */ #define MEA_MAGIC_LAST_CHAR 0xb2221ca1 #define MEA_MAGIC_ALL_CHARS 0xb222a11c #define MEA_MAGIC_HASH_SEGMENT 0xb222a11b #define MAX_HASH_SIZE_32 0x7fffffffUL #define MAX_HASH_SIZE 0x7fffffffffffffffULL #define MAX_HASH_HIGHEST_BIT 0x1000000000000000ULL struct lustre_md { struct mdt_body *body; struct lov_stripe_md *lsm; struct lmv_stripe_md *mea; #ifdef CONFIG_FS_POSIX_ACL struct posix_acl *posix_acl; #endif struct mdt_remote_perm *remote_perm; struct obd_capa *mds_capa; struct obd_capa *oss_capa; }; struct md_open_data { struct obd_client_handle *mod_och; struct ptlrpc_request *mod_open_req; struct ptlrpc_request *mod_close_req; cfs_atomic_t mod_refcount; }; struct lookup_intent; struct md_ops { int (*m_getstatus)(struct obd_export *, struct lu_fid *, struct obd_capa **); int (*m_null_inode)(struct obd_export *, const struct lu_fid *); int (*m_find_cbdata)(struct obd_export *, const struct lu_fid *, ldlm_iterator_t, void *); int (*m_close)(struct obd_export *, struct md_op_data *, struct md_open_data *, struct ptlrpc_request **); int (*m_create)(struct obd_export *, struct md_op_data *, const void *, int, int, __u32, __u32, cfs_cap_t, __u64, struct ptlrpc_request **); int (*m_done_writing)(struct obd_export *, struct md_op_data *, struct md_open_data *); int (*m_enqueue)(struct obd_export *, struct ldlm_enqueue_info *, struct lookup_intent *, struct md_op_data *, struct lustre_handle *, void *, int, struct ptlrpc_request **, __u64); int (*m_getattr)(struct obd_export *, struct md_op_data *, struct ptlrpc_request **); int (*m_getattr_name)(struct obd_export *, struct md_op_data *, struct ptlrpc_request **); int (*m_intent_lock)(struct obd_export *, struct md_op_data *, void *, int, struct lookup_intent *, int, struct ptlrpc_request **, ldlm_blocking_callback, __u64); int (*m_link)(struct obd_export *, struct md_op_data *, struct ptlrpc_request **); int (*m_rename)(struct obd_export *, struct md_op_data *, const char *, int, const char *, int, struct ptlrpc_request **); int (*m_is_subdir)(struct obd_export *, const struct lu_fid *, const struct lu_fid *, struct ptlrpc_request **); int (*m_setattr)(struct obd_export *, struct md_op_data *, void *, int , void *, int, struct ptlrpc_request **, struct md_open_data **mod); int (*m_sync)(struct obd_export *, const struct lu_fid *, struct obd_capa *, struct ptlrpc_request **); int (*m_readpage)(struct obd_export *, struct md_op_data *, struct page **, struct ptlrpc_request **); int (*m_unlink)(struct obd_export *, struct md_op_data *, struct ptlrpc_request **); int (*m_setxattr)(struct obd_export *, const struct lu_fid *, struct obd_capa *, obd_valid, const char *, const char *, int, int, int, __u32, struct ptlrpc_request **); int (*m_getxattr)(struct obd_export *, const struct lu_fid *, struct obd_capa *, obd_valid, const char *, const char *, int, int, int, struct ptlrpc_request **); int (*m_init_ea_size)(struct obd_export *, int, int, int); int (*m_get_lustre_md)(struct obd_export *, struct ptlrpc_request *, struct obd_export *, struct obd_export *, struct lustre_md *); int (*m_free_lustre_md)(struct obd_export *, struct lustre_md *); int (*m_set_open_replay_data)(struct obd_export *, struct obd_client_handle *, struct ptlrpc_request *); int (*m_clear_open_replay_data)(struct obd_export *, struct obd_client_handle *); int (*m_set_lock_data)(struct obd_export *, __u64 *, void *, __u64 *); ldlm_mode_t (*m_lock_match)(struct obd_export *, __u64, const struct lu_fid *, ldlm_type_t, ldlm_policy_data_t *, ldlm_mode_t, struct lustre_handle *); int (*m_cancel_unused)(struct obd_export *, const struct lu_fid *, ldlm_policy_data_t *, ldlm_mode_t, ldlm_cancel_flags_t flags, void *opaque); int (*m_renew_capa)(struct obd_export *, struct obd_capa *oc, renew_capa_cb_t cb); int (*m_unpack_capa)(struct obd_export *, struct ptlrpc_request *, const struct req_msg_field *, struct obd_capa **); int (*m_get_remote_perm)(struct obd_export *, const struct lu_fid *, struct obd_capa *, __u32, struct ptlrpc_request **); int (*m_intent_getattr_async)(struct obd_export *, struct md_enqueue_info *, struct ldlm_enqueue_info *); int (*m_revalidate_lock)(struct obd_export *, struct lookup_intent *, struct lu_fid *, __u64 *bits); /* * NOTE: If adding ops, add another LPROCFS_MD_OP_INIT() line to * lprocfs_alloc_md_stats() in obdclass/lprocfs_status.c. Also, add a * wrapper function in include/linux/obd_class.h. */ }; struct lsm_operations { void (*lsm_free)(struct lov_stripe_md *); int (*lsm_destroy)(struct lov_stripe_md *, struct obdo *oa, struct obd_export *md_exp); void (*lsm_stripe_by_index)(struct lov_stripe_md *, int *, obd_off *, obd_off *); void (*lsm_stripe_by_offset)(struct lov_stripe_md *, int *, obd_off *, obd_off *); int (*lsm_lmm_verify) (struct lov_mds_md *lmm, int lmm_bytes, __u16 *stripe_count); int (*lsm_unpackmd) (struct lov_obd *lov, struct lov_stripe_md *lsm, struct lov_mds_md *lmm); }; extern const struct lsm_operations lsm_v1_ops; extern const struct lsm_operations lsm_v3_ops; static inline const struct lsm_operations *lsm_op_find(int magic) { switch(magic) { case LOV_MAGIC_V1: return &lsm_v1_ops; case LOV_MAGIC_V3: return &lsm_v3_ops; default: CERROR("Cannot recognize lsm_magic %08x\n", magic); return NULL; } } /* Requests for obd_extent_calc() */ #define OBD_CALC_STRIPE_START 1 #define OBD_CALC_STRIPE_END 2 static inline struct lustre_capa *oinfo_capa(struct obd_info *oinfo) { return oinfo->oi_capa; } static inline struct md_open_data *obd_mod_alloc(void) { struct md_open_data *mod; OBD_ALLOC_PTR(mod); if (mod == NULL) return NULL; cfs_atomic_set(&mod->mod_refcount, 1); return mod; } #define obd_mod_get(mod) cfs_atomic_inc(&(mod)->mod_refcount) #define obd_mod_put(mod) \ ({ \ if (cfs_atomic_dec_and_test(&(mod)->mod_refcount)) { \ if ((mod)->mod_open_req) \ ptlrpc_req_finished((mod)->mod_open_req); \ OBD_FREE_PTR(mod); \ } \ }) void obdo_from_inode(struct obdo *dst, struct inode *src, obd_flag valid); void obdo_set_parent_fid(struct obdo *dst, const struct lu_fid *parent); /* return 1 if client should be resend request */ static inline int client_should_resend(int resend, struct client_obd *cli) { return cfs_atomic_read(&cli->cl_resends) ? cfs_atomic_read(&cli->cl_resends) > resend : 1; } /** * Return device name for this device * * XXX: lu_device is declared before obd_device, while a pointer pointing * back to obd_device in lu_device, so this helper function defines here * instead of in lu_object.h */ static inline const char *lu_dev_name(const struct lu_device *lu_dev) { return lu_dev->ld_obd->obd_name; } static inline bool filename_is_volatile(const char *name, int namelen, int *idx) { const char *start; char *end; if (strncmp(name, LUSTRE_VOLATILE_HDR, LUSTRE_VOLATILE_HDR_LEN) != 0) return false; /* caller does not care of idx */ if (idx == NULL) return true; /* volatile file, the MDT can be set from name */ /* name format is LUSTRE_VOLATILE_HDR:[idx]: */ /* if no MDT is specified, use std way */ if (namelen < LUSTRE_VOLATILE_HDR_LEN + 2) goto bad_format; /* test for no MDT idx case */ if ((*(name + LUSTRE_VOLATILE_HDR_LEN) == ':') && (*(name + LUSTRE_VOLATILE_HDR_LEN + 1) == ':')) { *idx = -1; return true; } /* we have an idx, read it */ start = name + LUSTRE_VOLATILE_HDR_LEN + 1; *idx = strtoul(start, &end, 0); /* error cases: * no digit, no trailing :, negative value */ if (((*idx == 0) && (end == start)) || (*end != ':') || (*idx < 0)) goto bad_format; return true; bad_format: /* bad format of mdt idx, we cannot return an error * to caller so we use hash algo */ CERROR("Bad volatile file name format: %s\n", name + LUSTRE_VOLATILE_HDR_LEN); return false; } static inline int cli_brw_size(struct obd_device *obd) { LASSERT(obd != NULL); return obd->u.cli.cl_max_pages_per_rpc << PAGE_CACHE_SHIFT; } #endif /* __OBD_H */