/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- * vim:expandtab:shiftwidth=8:tabstop=8: */ #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 /* Moved to lustre_user.h #define IOC_MDC_LOOKUP _IOWR(IOC_MDC_TYPE, 20, struct obd_ioctl_data *) #define IOC_MDC_GETSTRIPE _IOWR(IOC_MDC_TYPE, 21, struct lov_mds_md *) */ #define IOC_MDC_MAX_NR 50 #include #include #include #include #define MAX_OBD_DEVICES 8192 /* this is really local to the OSC */ struct loi_oap_pages { struct list_head lop_pending; struct list_head lop_urgent; struct list_head lop_pending_group; int lop_num_pending; }; struct osc_async_rc { int ar_rc; int ar_force_sync; int ar_min_xid; }; struct lov_oinfo { /* per-stripe data structure */ __u64 loi_id; /* object ID on the target OST */ __u64 loi_gr; /* object group 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 */ /* used by the osc to keep track of what objects to build into rpcs */ struct loi_oap_pages loi_read_lop; struct loi_oap_pages loi_write_lop; /* _cli_ is poorly named, it should be _ready_ */ struct list_head loi_cli_item; struct list_head loi_write_item; struct list_head loi_read_item; unsigned 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_init(struct lov_oinfo *loi) { CFS_INIT_LIST_HEAD(&loi->loi_read_lop.lop_pending); CFS_INIT_LIST_HEAD(&loi->loi_read_lop.lop_urgent); CFS_INIT_LIST_HEAD(&loi->loi_read_lop.lop_pending_group); CFS_INIT_LIST_HEAD(&loi->loi_write_lop.lop_pending); CFS_INIT_LIST_HEAD(&loi->loi_write_lop.lop_urgent); CFS_INIT_LIST_HEAD(&loi->loi_write_lop.lop_pending_group); CFS_INIT_LIST_HEAD(&loi->loi_cli_item); CFS_INIT_LIST_HEAD(&loi->loi_write_item); CFS_INIT_LIST_HEAD(&loi->loi_read_item); } /*extent array item for describing the joined file extent info*/ struct lov_extent { __u64 le_start; /* extent start */ __u64 le_len; /* extent length */ int le_loi_idx; /* extent #1 loi's index in lsm loi array */ int le_stripe_count; /* extent stripe count*/ }; /*Lov array info for describing joined file array EA info*/ struct lov_array_info { struct llog_logid lai_array_id; /* MDS med llog object id */ unsigned lai_ext_count; /* number of extent count */ struct lov_extent *lai_ext_array; /* extent desc array */ }; struct lov_stripe_md { spinlock_t lsm_lock; void *lsm_lock_owner; /* debugging */ struct { /* Public members. */ __u64 lw_object_id; /* lov object id */ __u64 lw_object_gr; /* lov object group */ __u64 lw_maxbytes; /* maximum possible file size */ /* 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) */ unsigned lw_stripe_count; /* number of objects being striped over */ } lsm_wire; struct lov_array_info *lsm_array; /*Only for joined file array info*/ struct lov_oinfo *lsm_oinfo[0]; }; #define lsm_object_id lsm_wire.lw_object_id #define lsm_object_gr lsm_wire.lw_object_gr #define lsm_maxbytes lsm_wire.lw_maxbytes #define lsm_magic lsm_wire.lw_magic #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 struct obd_info; typedef int (*obd_enqueue_update_f)(struct obd_info *oinfo, int rc); /* obd_enqueue parameters common for all levels (lov, osc). */ struct obd_enqueue_info { /* Flags used while lock handling. */ int ei_flags; /* Type of the lock being enqueued. */ __u32 ei_type; /* Mode of the lock being enqueued. */ __u32 ei_mode; /* Different callbacks for lock handling (blocking, completion, glimpse */ void *ei_cb_bl; void *ei_cb_cp; void *ei_cb_gl; /* Data to be passed into callbacks. */ void *ei_cbdata; /* Request set for OSC async requests. */ struct ptlrpc_request_set *ei_rqset; }; /* 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; /* 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; }; /* 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); } void lov_stripe_lock(struct lov_stripe_md *md); void lov_stripe_unlock(struct lov_stripe_md *md); struct obd_type { struct list_head typ_chain; struct obd_ops *typ_ops; cfs_proc_dir_entry_t *typ_procroot; char *typ_name; int typ_refcnt; spinlock_t obd_type_lock; }; struct brw_page { obd_off off; cfs_page_t *pg; int count; obd_flag flag; }; enum async_flags { ASYNC_READY = 0x1, /* ap_make_ready will not be called before this page is added to an rpc */ ASYNC_URGENT = 0x2, /* page must be put into an RPC before return */ ASYNC_COUNT_STABLE = 0x4, /* ap_refresh_count will not be called to give the caller a chance to update or cancel the size of the io */ ASYNC_GROUP_SYNC = 0x8, /* ap_completion will not be called, instead the page is accounted for in the obd_io_group given to obd_queue_group_io */ }; struct obd_async_page_ops { int (*ap_make_ready)(void *data, int cmd); int (*ap_refresh_count)(void *data, int cmd); void (*ap_fill_obdo)(void *data, int cmd, struct obdo *oa); void (*ap_update_obdo)(void *data, int cmd, struct obdo *oa, obd_valid valid); int (*ap_completion)(void *data, int cmd, struct obdo *oa, int rc); }; /* the `oig' is passed down from a caller of obd rw methods. the callee * records enough state such that the caller can sleep on the oig and * be woken when all the callees have finished their work */ struct obd_io_group { spinlock_t oig_lock; atomic_t oig_refcount; int oig_pending; int oig_rc; struct list_head oig_occ_list; cfs_waitq_t oig_waitq; }; /* the oig callback context lets the callee of obd rw methods register * for callbacks from the caller. */ struct oig_callback_context { struct list_head occ_oig_item; /* called when the caller has received a signal while sleeping. * callees of this method are encouraged to abort their state * in the oig. This may be called multiple times. */ void (*occ_interrupted)(struct oig_callback_context *occ); unsigned int interrupted:1; }; /* Individual type definitions */ struct ost_server_data; /* hold common fields for "target" device */ struct obd_device_target { struct super_block *obt_sb; atomic_t obt_quotachecking; struct lustre_quota_ctxt obt_qctxt; }; #define FILTER_GROUP_LLOG 1 #define FILTER_GROUP_ECHO 2 struct filter_ext { __u64 fe_start; __u64 fe_end; }; struct filter_obd { /* NB this field MUST be first */ struct obd_device_target fo_obt; const char *fo_fstype; struct vfsmount *fo_vfsmnt; cfs_dentry_t *fo_dentry_O; cfs_dentry_t **fo_dentry_O_groups; cfs_dentry_t **fo_dentry_O_sub; spinlock_t fo_objidlock; /* protect fo_lastobjid */ spinlock_t fo_translock; /* protect fsd_last_transno */ struct file *fo_rcvd_filp; struct file *fo_health_check_filp; struct lr_server_data *fo_fsd; unsigned long *fo_last_rcvd_slots; __u64 fo_mount_count; int fo_destroy_in_progress; struct semaphore fo_create_lock; struct list_head fo_export_list; int fo_subdir_count; obd_size fo_tot_dirty; /* protected by obd_osfs_lock */ obd_size fo_tot_granted; /* all values in bytes */ obd_size fo_tot_pending; obd_size fo_readcache_max_filesize; struct obd_import *fo_mdc_imp; struct obd_uuid fo_mdc_uuid; struct lustre_handle fo_mdc_conn; struct file **fo_last_objid_files; __u64 *fo_last_objids; /* last created objid for groups, * protected by fo_objidlock */ struct semaphore fo_alloc_lock; atomic_t fo_r_in_flight; atomic_t fo_w_in_flight; /* * per-filter pool of kiobuf's allocated by filter_common_setup() and * torn down by filter_cleanup(). Contains OST_NUM_THREADS elements of * which ->fo_iobuf_count were allocated. * * This pool contains kiobuf used by * filter_{prep,commit}rw_{read,write}() and is shared by all OST * threads. * * Locking: none, each OST thread uses only one element, determined by * its "ordinal number", ->t_id. */ struct filter_iobuf **fo_iobuf_pool; int fo_iobuf_count; struct brw_stats fo_filter_stats; struct lustre_quota_ctxt fo_quota_ctxt; spinlock_t fo_quotacheck_lock; atomic_t fo_quotachecking; int fo_fmd_max_num; /* per exp filter_mod_data */ int fo_fmd_max_age; /* jiffies to fmd expiry */ }; #define OSC_MAX_RIF_DEFAULT 8 #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 MDC_MAX_RIF_DEFAULT 8 #define MDC_MAX_RIF_MAX 512 struct mdc_rpc_lock; struct obd_import; struct client_obd { struct 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; //struct llog_canceld_ctxt *cl_llcd; /* it's included by obd_llog_ctxt */ void *cl_llcd_offset; /* 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_avail_grant; /* bytes of credit for ost */ long cl_lost_grant; /* lost credits (trunc) */ struct list_head cl_cache_waiters; /* waiting for cache/grant */ /* 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. */ client_obd_lock_t cl_loi_list_lock; struct list_head cl_loi_ready_list; struct list_head cl_loi_write_list; struct list_head 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 */ int cl_pending_w_pages; int cl_pending_r_pages; int 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; struct mdc_rpc_lock *cl_rpc_lock; struct mdc_rpc_lock *cl_setattr_lock; struct mdc_rpc_lock *cl_close_lock; struct osc_creator cl_oscc; /* mgc datastruct */ struct semaphore cl_mgc_sem; struct vfsmount *cl_mgc_vfsmnt; struct dentry *cl_mgc_configs_dir; atomic_t cl_mgc_refcount; struct obd_export *cl_mgc_mgsexp; /* Flags section */ unsigned int cl_checksum:1; /* debug checksums */ /* also protected by the poorly named _loi_list_lock lock above */ struct osc_async_rc cl_ar; /* used by quotacheck */ int cl_qchk_stat; /* quotacheck stat of the peer */ }; #define obd2cli_tgt(obd) ((char *)(obd)->u.cli.cl_target_uuid.uuid) #define CL_NOT_QUOTACHECKED 1 /* client->cl_qchk_stat init value */ struct mgs_obd { struct ptlrpc_service *mgs_service; struct vfsmount *mgs_vfsmnt; struct super_block *mgs_sb; struct dentry *mgs_configs_dir; struct dentry *mgs_fid_de; struct list_head mgs_fs_db_list; struct semaphore mgs_sem; cfs_proc_dir_entry_t *mgs_proc_live; }; struct mds_obd { /* NB this field MUST be first */ struct obd_device_target mds_obt; struct ptlrpc_service *mds_service; struct ptlrpc_service *mds_setattr_service; struct ptlrpc_service *mds_readpage_service; struct vfsmount *mds_vfsmnt; cfs_dentry_t *mds_fid_de; int mds_max_mdsize; int mds_max_cookiesize; struct file *mds_rcvd_filp; spinlock_t mds_transno_lock; __u64 mds_last_transno; __u64 mds_mount_count; __u64 mds_io_epoch; unsigned long mds_atime_diff; struct semaphore mds_epoch_sem; struct ll_fid mds_rootfid; struct lr_server_data *mds_server_data; cfs_dentry_t *mds_pending_dir; cfs_dentry_t *mds_logs_dir; cfs_dentry_t *mds_objects_dir; struct llog_handle *mds_cfg_llh; // struct llog_handle *mds_catalog; struct obd_device *mds_osc_obd; /* XXX lov_obd */ struct obd_uuid mds_lov_uuid; char *mds_profile; struct obd_export *mds_osc_exp; /* XXX lov_exp */ struct lov_desc mds_lov_desc; obd_id *mds_lov_objids; int mds_lov_objids_size; __u32 mds_lov_objids_in_file; unsigned int mds_lov_objids_dirty:1; int mds_lov_nextid_set; struct file *mds_lov_objid_filp; struct file *mds_health_check_filp; unsigned long *mds_client_bitmap; struct upcall_cache *mds_group_hash; struct lustre_quota_info mds_quota_info; struct semaphore mds_qonoff_sem; struct semaphore mds_health_sem; unsigned long mds_lov_objids_valid:1, mds_fl_user_xattr:1, mds_fl_acl:1; }; struct echo_obd { struct obdo eo_oa; spinlock_t eo_lock; __u64 eo_lastino; struct lustre_handle eo_nl_lock; atomic_t eo_prep; }; struct ost_obd { struct ptlrpc_service *ost_service; struct ptlrpc_service *ost_create_service; struct ptlrpc_service *ost_io_service; struct semaphore ost_health_sem; }; struct echo_client_obd { struct obd_export *ec_exp; /* the local connection to osc/lov */ spinlock_t ec_lock; struct list_head ec_objects; int ec_nstripes; __u64 ec_unique; }; struct lov_qos_oss { struct obd_uuid lqo_uuid; /* ptlrpc's c_remote_uuid */ struct list_head lqo_oss_list; /* link to lov_qos */ __u32 lqo_ost_count; /* number of osts on this oss */ __u64 lqo_bavail; /* total bytes avail on OSS */ __u64 lqo_penalty; /* current penalty */ __u64 lqo_penalty_per_obj; /* penalty decrease every obj*/ }; 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 */ unsigned int ltq_usable:1; /* usable for striping */ }; struct lov_qos { struct list_head lq_oss_list; /* list of OSSs that targets use */ struct rw_semaphore lq_rw_sem; __u32 lq_active_oss_count; __u32 *lq_rr_array; /* round-robin optimized list */ unsigned int lq_rr_size; /* rr array size */ unsigned int lq_prio_free; /* priority for free space */ unsigned int lq_dirty:1, /* recalc qos data */ lq_dirty_rr:1, /* recalc round-robin list */ lq_same_space:1,/* the ost's all have approx. the same space avail */ lq_reset:1; /* zero current penalties */ }; struct lov_tgt_desc { struct obd_uuid ltd_uuid; 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 int ltd_active:1,/* is this target up for requests */ ltd_activate:1,/* should this target be activated */ ltd_reap:1; /* should this target be deleted */ }; struct lov_obd { struct lov_desc desc; struct lov_tgt_desc **lov_tgts; struct semaphore lov_lock; struct obd_connect_data lov_ocd; struct lov_qos lov_qos; /* qos info per lov */ 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 */ __u32 lov_start_idx; /* start index of new inode */ __u32 lov_offset_idx; /* aliasing for start_idx */ int lov_start_count;/* reseed counter */ int lov_connects; }; struct niobuf_local { __u64 offset; __u32 len; __u32 flags; cfs_page_t *page; cfs_dentry_t *dentry; int lnb_grant_used; int rc; }; /* 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_CACHEOBD_NAME "cobd" #define LUSTRE_ECHO_NAME "obdecho" #define LUSTRE_ECHO_CLIENT_NAME "echo_client" /* 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" /* 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; __u64 *oti_objid; /* 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; /* initial thread handling transaction */ int oti_thread_id; __u32 oti_conn_cnt; }; 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; if (req->rq_repmsg && req->rq_reqmsg != 0) oti->oti_transno = lustre_msg_get_transno(req->rq_repmsg); oti->oti_thread_id = req->rq_svc_thread ? req->rq_svc_thread->t_id : -1; 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(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(oti->oti_logcookies, oti->oti_numcookies * sizeof(oti->oti_onecookie)); oti->oti_logcookies = NULL; oti->oti_numcookies = 0; } /* llog contexts */ enum llog_ctxt_id { LLOG_CONFIG_ORIG_CTXT = 0, LLOG_CONFIG_REPL_CTXT = 1, LLOG_MDS_OST_ORIG_CTXT = 2, LLOG_MDS_OST_REPL_CTXT = 3, LLOG_SIZE_ORIG_CTXT = 4, LLOG_SIZE_REPL_CTXT = 5, LLOG_MD_ORIG_CTXT = 6, LLOG_MD_REPL_CTXT = 7, LLOG_RD1_ORIG_CTXT = 8, LLOG_RD1_REPL_CTXT = 9, LLOG_TEST_ORIG_CTXT = 10, LLOG_TEST_REPL_CTXT = 11, LLOG_LOVEA_ORIG_CTXT = 12, LLOG_LOVEA_REPL_CTXT = 13, LLOG_MAX_CTXTS }; /* * Events signalled through obd_notify() upcall-chain. */ enum obd_notify_event { /* Device activated */ OBD_NOTIFY_ACTIVE, /* Device deactivated */ OBD_NOTIFY_INACTIVE, /* Connect data for import were changed */ OBD_NOTIFY_OCD, /* Sync request */ OBD_NOTIFY_SYNC_NONBLOCK, OBD_NOTIFY_SYNC }; /* * 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); /* Opaque datum supplied by upper layer listener */ void *onu_owner; }; /* corresponds to one of the obd's */ #define MAX_OBD_NAME 128 #define OBD_DEVICE_MAGIC 0XAB5CD6EF 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; int obd_minor; unsigned int obd_attached:1, /* finished attach */ obd_set_up:1, /* finished setup */ obd_recovering:1, /* there are recoverable clients */ obd_abort_recovery:1,/* somebody ioctl'ed us to abort */ 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 asyncronous orphan cleanup */ atomic_t obd_refcount; cfs_waitq_t obd_refcount_waitq; struct list_head obd_exports; int obd_num_exports; 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; struct semaphore obd_dev_sem; __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 llog_ctxt *obd_llog_ctxt[LLOG_MAX_CTXTS]; struct obd_device *obd_observer; 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 */ struct list_head obd_exports_timed; time_t obd_eviction_timer; /* for ping evictor */ /* XXX encapsulate all this recovery data into one struct */ svc_handler_t obd_recovery_handler; int obd_max_recoverable_clients; int obd_connected_clients; int obd_recoverable_clients; spinlock_t obd_processing_task_lock; /* BH lock (timer) */ pid_t obd_processing_task; __u64 obd_next_recovery_transno; int obd_replayed_requests; int obd_requests_queued_for_recovery; cfs_waitq_t obd_next_transno_waitq; struct list_head obd_uncommitted_replies; spinlock_t obd_uncommitted_replies_lock; cfs_timer_t obd_recovery_timer; struct list_head obd_recovery_queue; struct list_head obd_delayed_reply_queue; time_t obd_recovery_start; time_t obd_recovery_end; union { struct obd_device_target obt; struct filter_obd filter; struct mds_obd mds; struct client_obd cli; struct ost_obd ost; struct echo_client_obd echo_client; struct echo_obd echo; struct lov_obd lov; struct mgs_obd mgs; } u; /* Fields used by LProcFS */ cfs_proc_dir_entry_t *obd_proc_entry; cfs_proc_dir_entry_t *obd_proc_exports; cfs_proc_dir_entry_t *obd_svc_procroot; struct lprocfs_stats *obd_stats; struct lprocfs_stats *obd_svc_stats; unsigned int obd_cntr_base; struct semaphore obd_proc_exp_sem; }; #define OBD_OPT_FORCE 0x0001 #define OBD_OPT_FAILOVER 0x0002 #define OBD_LLOG_FL_SENDNOW 0x0001 enum obd_cleanup_stage { /* Special case hack for MDS LOVs */ OBD_CLEANUP_EARLY, /* Precleanup stage 1, we must make sure all exports (other than the self-export) get destroyed. */ OBD_CLEANUP_EXPORTS, /* Precleanup stage 2, do other type-specific cleanup requiring the self-export. */ OBD_CLEANUP_SELF_EXP, /* FIXME we should eliminate the "precleanup" function and make them stages of the "cleanup" function. */ OBD_CLEANUP_OBD, }; /* get/set_info keys */ #define KEY_MDS_CONN "mds_conn" #define KEY_NEXT_ID "next_id" #define KEY_LOVDESC "lovdesc" #define KEY_INIT_RECOV "initial_recov" #define KEY_INIT_RECOV_BACKUP "init_recov_bk" struct obd_ops { struct module *o_owner; int (*o_iocontrol)(unsigned int cmd, struct obd_export *exp, int len, void *karg, void *uarg); int (*o_get_info)(struct obd_export *, __u32 keylen, void *key, __u32 *vallen, void *val); int (*o_set_info_async)(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, obd_count len, void *data); 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)(struct lustre_handle *conn, struct obd_device *src, struct obd_uuid *cluuid, struct obd_connect_data *ocd); int (*o_reconnect)(struct obd_export *exp, struct obd_device *src, struct obd_uuid *cluuid, struct obd_connect_data *ocd); int (*o_disconnect)(struct obd_export *exp); int (*o_statfs)(struct obd_device *obd, struct obd_statfs *osfs, __u64 max_age); int (*o_statfs_async)(struct obd_device *obd, 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_checkmd)(struct obd_export *exp, struct obd_export *md_exp, struct lov_stripe_md *mem_tgt); int (*o_preallocate)(struct lustre_handle *, obd_count *req, obd_id *ids); int (*o_create)(struct obd_export *exp, struct obdo *oa, struct lov_stripe_md **ea, struct obd_trans_info *oti); int (*o_destroy)(struct obd_export *exp, struct obdo *oa, struct lov_stripe_md *ea, struct obd_trans_info *oti, struct obd_export *md_exp); int (*o_setattr)(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)(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_brw_async)(int rw, struct obd_export *exp, struct obd_info *oinfo, obd_count oa_bufs, struct brw_page *pgarr, struct obd_trans_info *oti, struct ptlrpc_request_set *); int (*o_prep_async_page)(struct obd_export *exp, struct lov_stripe_md *lsm, struct lov_oinfo *loi, cfs_page_t *page, obd_off offset, struct obd_async_page_ops *ops, void *data, void **res); int (*o_queue_async_io)(struct obd_export *exp, struct lov_stripe_md *lsm, struct lov_oinfo *loi, void *cookie, int cmd, obd_off off, int count, obd_flag brw_flags, obd_flag async_flags); int (*o_queue_group_io)(struct obd_export *exp, struct lov_stripe_md *lsm, struct lov_oinfo *loi, struct obd_io_group *oig, void *cookie, int cmd, obd_off off, int count, obd_flag brw_flags, obd_flag async_flags); int (*o_trigger_group_io)(struct obd_export *exp, struct lov_stripe_md *lsm, struct lov_oinfo *loi, struct obd_io_group *oig); int (*o_set_async_flags)(struct obd_export *exp, struct lov_stripe_md *lsm, struct lov_oinfo *loi, void *cookie, obd_flag async_flags); int (*o_teardown_async_page)(struct obd_export *exp, struct lov_stripe_md *lsm, struct lov_oinfo *loi, void *cookie); 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)(struct obd_export *exp, struct obd_info *oinfo, struct obd_trans_info *oti, struct ptlrpc_request_set *rqset); int (*o_sync)(struct obd_export *exp, struct obdo *oa, struct lov_stripe_md *ea, obd_size start, obd_size end); 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_gr, void *), obd_id *startid, obd_gr group, void *data); int (*o_preprw)(int cmd, struct obd_export *exp, struct obdo *oa, int objcount, struct obd_ioobj *obj, int niocount, struct niobuf_remote *remote, struct niobuf_local *local, struct obd_trans_info *oti); int (*o_commitrw)(int cmd, struct obd_export *exp, struct obdo *oa, int objcount, struct obd_ioobj *obj, int niocount, struct niobuf_local *local, struct obd_trans_info *oti, int rc); int (*o_enqueue)(struct obd_export *, struct obd_info *oinfo, struct obd_enqueue_info *einfo); int (*o_match)(struct obd_export *, struct lov_stripe_md *, __u32 type, ldlm_policy_data_t *, __u32 mode, int *flags, void *data, struct lustre_handle *lockh); int (*o_change_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 *, int flags, void *opaque); int (*o_join_lru)(struct obd_export *, struct lov_stripe_md *, int join); 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_device *disk_obd, int count, struct llog_catid *logid, struct obd_uuid *uuid); int (*o_llog_finish)(struct obd_device *obd, int count); /* metadata-only methods */ int (*o_pin)(struct obd_export *, obd_id ino, __u32 gen, int type, 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)(struct obd_device *); /* quota methods */ int (*o_quotacheck)(struct obd_export *, struct obd_quotactl *); int (*o_quotactl)(struct obd_export *, struct obd_quotactl *); int (*o_ping)(struct obd_export *exp); /* * 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. */ }; 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 *, unsigned long *); void (*lsm_stripe_by_offset)(struct lov_stripe_md *, int *, obd_off *, unsigned long *); obd_off (*lsm_stripe_offset_by_index)(struct lov_stripe_md *, int); obd_off (*lsm_stripe_offset_by_offset)(struct lov_stripe_md *, obd_off); int (*lsm_stripe_index_by_offset)(struct lov_stripe_md *, obd_off); int (*lsm_revalidate) (struct lov_stripe_md *, struct obd_device *obd); int (*lsm_lmm_verify) (struct lov_mds_md *lmm, int lmm_bytes, int *stripe_count); int (*lsm_unpackmd) (struct lov_obd *lov, struct lov_stripe_md *lsm, struct lov_mds_md *lmm); }; extern struct lsm_operations lsm_plain_ops; extern struct lsm_operations lsm_join_ops; static inline struct lsm_operations *lsm_op_find(int magic) { switch(magic) { case LOV_MAGIC: return &lsm_plain_ops; case LOV_MAGIC_JOIN: return &lsm_join_ops; default: CERROR("Cannot recognize lsm_magic %d", magic); return NULL; } } int lvfs_check_io_health(struct obd_device *obd, struct file *file); /* Requests for obd_extent_calc() */ #define OBD_CALC_STRIPE_START 1 #define OBD_CALC_STRIPE_END 2 static inline void obd_transno_commit_cb(struct obd_device *obd, __u64 transno, int error) { if (error) { CERROR("%s: transno "LPD64" commit error: %d\n", obd->obd_name, transno, error); return; } CDEBUG(D_HA, "%s: transno "LPD64" committed\n", obd->obd_name, transno); if (transno > obd->obd_last_committed) { obd->obd_last_committed = transno; ptlrpc_commit_replies (obd); } } static inline void init_obd_quota_ops(quota_interface_t *interface, struct obd_ops *obd_ops) { if (!interface) return; LASSERT(obd_ops); obd_ops->o_quotacheck = QUOTA_OP(interface, check); obd_ops->o_quotactl = QUOTA_OP(interface, ctl); } #endif /* __OBD_H */