X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Finclude%2Flinux%2Flustre_log.h;h=65e1c51a4a8b1f69c517d6af3c9129f624945091;hb=81344484a5f570ad0ecc530ac3666fb1d99469ed;hp=1d0ff9fede94ed79235030dbaa18980ff74b6058;hpb=ff17cc7e0282d9b1522810e0c5d12171c4d46a2d;p=fs%2Flustre-release.git diff --git a/lustre/include/linux/lustre_log.h b/lustre/include/linux/lustre_log.h index 1d0ff9f..65e1c51 100644 --- a/lustre/include/linux/lustre_log.h +++ b/lustre/include/linux/lustre_log.h @@ -32,359 +32,13 @@ * - MDS replication logs */ -#ifndef _LUSTRE_LOG_H -#define _LUSTRE_LOG_H - -#include -#include - -#define LOG_NAME_LIMIT(logname, name) \ - snprintf(logname, sizeof(logname), "LOGS/%s", name) - -struct plain_handle_data { - struct list_head phd_entry; - struct llog_handle *phd_cat_handle; - struct llog_cookie phd_cookie; /* cookie of this log in its cat */ - int phd_last_idx; -}; - -struct cat_handle_data { - struct list_head chd_head; - struct llog_handle *chd_current_log; /* currently open log */ -}; - -/* In-memory descriptor for a log object or log catalog */ -struct llog_handle { - struct rw_semaphore lgh_lock; - struct llog_logid lgh_id; /* id of this log */ - struct llog_log_hdr *lgh_hdr; - struct file *lgh_file; - int lgh_last_idx; - struct llog_ctxt *lgh_ctxt; - union { - struct plain_handle_data phd; - struct cat_handle_data chd; - } u; -}; - -#define LLOG_EEMPTY 4711 - -/* llog.c - general API */ -typedef int (*llog_cb_t)(struct llog_handle *, struct llog_rec_hdr *, void *); -int llog_init_handle(struct llog_handle *handle, int flags, - struct obd_uuid *uuid); -int llog_process(struct llog_handle *loghandle, llog_cb_t cb, - void *data, void *catdata); -extern struct llog_handle *llog_alloc_handle(void); -extern void llog_free_handle(struct llog_handle *handle); -extern int llog_close(struct llog_handle *cathandle); -extern int llog_cancel_rec(struct llog_handle *loghandle, int index); - -/* llog_cat.c - catalog api */ -struct llog_process_data { - void *lpd_data; - llog_cb_t lpd_cb; -}; - -struct llog_process_cat_data { - int first_idx; - int last_idx; - /* to process catlog across zero record */ -}; - -int llog_cat_put(struct llog_handle *cathandle); -int llog_cat_add_rec(struct llog_handle *cathandle, struct llog_rec_hdr *rec, - struct llog_cookie *reccookie, void *buf); -int llog_cat_cancel_records(struct llog_handle *cathandle, int count, - struct llog_cookie *cookies); -int llog_cat_process(struct llog_handle *cat_llh, llog_cb_t cb, void *data); -int llog_cat_set_first_idx(struct llog_handle *cathandle, int index); - -/* llog_obd.c */ -int llog_setup(struct obd_device *obd, int index, struct obd_device *disk_obd, - int count, struct llog_logid *logid,struct llog_operations *op); -int llog_cleanup(struct llog_ctxt *); -int llog_sync(struct llog_ctxt *ctxt, struct obd_export *exp); -int llog_add(struct llog_ctxt *ctxt, struct llog_rec_hdr *rec, - struct lov_stripe_md *lsm, struct llog_cookie *logcookies, - int numcookies); -int llog_cancel(struct llog_ctxt *, struct lov_stripe_md *lsm, - int count, struct llog_cookie *cookies, int flags); - -int llog_obd_origin_setup(struct obd_device *obd, int index, - struct obd_device *disk_obd, int count, - struct llog_logid *logid); -int llog_obd_origin_cleanup(struct llog_ctxt *ctxt); -int llog_obd_origin_add(struct llog_ctxt *ctxt, - struct llog_rec_hdr *rec, struct lov_stripe_md *lsm, - struct llog_cookie *logcookies, int numcookies); - -int llog_cat_initialize(struct obd_device *obd, int count); -int obd_llog_init(struct obd_device *obd, struct obd_device *disk_obd, - int count, struct llog_catid *logid); - -int obd_llog_finish(struct obd_device *obd, int count); - -/* llog_ioctl.c */ -int llog_ioctl(struct llog_ctxt *ctxt, int cmd, struct obd_ioctl_data *data); -int llog_catlog_list(struct obd_device *obd, int count, - struct obd_ioctl_data *data); - -/* llog_net.c */ -int llog_initiator_connect(struct llog_ctxt *ctxt); -int llog_receptor_accept(struct llog_ctxt *ctxt, struct obd_import *imp); -int llog_origin_connect(struct llog_ctxt *ctxt, int count, - struct llog_logid *logid, struct llog_gen *gen, - struct obd_uuid *uuid); -int llog_handle_connect(struct ptlrpc_request *req); - -/* recov_thread.c */ -int llog_obd_repl_cancel(struct llog_ctxt *ctxt, - struct lov_stripe_md *lsm, int count, - struct llog_cookie *cookies, int flags); -int llog_obd_repl_sync(struct llog_ctxt *ctxt, struct obd_export *exp); -int llog_repl_connect(struct llog_ctxt *ctxt, int count, - struct llog_logid *logid, struct llog_gen *gen, - struct obd_uuid *uuid); - -struct llog_operations { - int (*lop_write_rec)(struct llog_handle *loghandle, - struct llog_rec_hdr *rec, - struct llog_cookie *logcookies, int numcookies, - void *, int idx); - int (*lop_destroy)(struct llog_handle *handle); - int (*lop_next_block)(struct llog_handle *h, int *curr_idx, - int next_idx, __u64 *offset, void *buf, int len); - int (*lop_create)(struct llog_ctxt *ctxt, struct llog_handle **, - struct llog_logid *logid, char *name); - int (*lop_close)(struct llog_handle *handle); - int (*lop_read_header)(struct llog_handle *handle); - - int (*lop_setup)(struct obd_device *obd, int ctxt_idx, - struct obd_device *disk_obd, int count, - struct llog_logid *logid); - int (*lop_sync)(struct llog_ctxt *ctxt, struct obd_export *exp); - int (*lop_cleanup)(struct llog_ctxt *ctxt); - int (*lop_add)(struct llog_ctxt *ctxt, struct llog_rec_hdr *rec, - struct lov_stripe_md *lsm, - struct llog_cookie *logcookies, int numcookies); - int (*lop_cancel)(struct llog_ctxt *ctxt, struct lov_stripe_md *lsm, - int count, struct llog_cookie *cookies, int flags); - int (*lop_connect)(struct llog_ctxt *ctxt, int count, - struct llog_logid *logid, struct llog_gen *gen, - struct obd_uuid *uuid); - /* XXX add 2 more: commit callbacks and llog recovery functions */ -}; - -/* llog_lvfs.c */ -extern struct llog_operations llog_lvfs_ops; -int llog_get_cat_list(struct obd_device *obd, struct obd_device *disk_obd, - char *name, int count, struct llog_catid *idarray); - -struct llog_ctxt { - int loc_idx; /* my index the obd array of ctxt's */ - struct llog_gen loc_gen; - struct obd_device *loc_obd; /* points back to the containing obd*/ - struct obd_export *loc_exp; - struct obd_import *loc_imp; /* to use in RPC's: can be backward - pointing import */ - struct llog_operations *loc_logops; - struct llog_handle *loc_handle; - struct llog_canceld_ctxt *loc_llcd; - struct semaphore loc_sem; /* protects loc_llcd */ - void *llog_proc_cb; -}; - -static inline void llog_gen_init(struct llog_ctxt *ctxt) -{ - struct obd_device *obd = ctxt->loc_exp->exp_obd; - - if (!strcmp(obd->obd_type->typ_name, "mds")) - ctxt->loc_gen.mnt_cnt = obd->u.mds.mds_mount_count; - else if (!strstr(obd->obd_type->typ_name, "filter")) - ctxt->loc_gen.mnt_cnt = obd->u.filter.fo_mount_count; - else - ctxt->loc_gen.mnt_cnt = 0; -} - -static inline int llog_gen_lt(struct llog_gen a, struct llog_gen b) -{ - if (a.mnt_cnt < b.mnt_cnt) - return 1; - if (a.mnt_cnt > b.mnt_cnt) - return 0; - return(a.conn_cnt < b.conn_cnt ? 1 : 0); -} - -#define LLOG_GEN_INC(gen) ((gen).conn_cnt) ++ -#define LLOG_PROC_BREAK 0x0001 - -static inline int llog_obd2ops(struct llog_ctxt *ctxt, - struct llog_operations **lop) -{ - if (ctxt == NULL) - return -ENOTCONN; - - *lop = ctxt->loc_logops; - if (*lop == NULL) - return -EOPNOTSUPP; +#ifndef _LINUX_LUSTRE_LOG_H +#define _LINUX_LUSTRE_LOG_H - return 0; -} - -static inline int llog_handle2ops(struct llog_handle *loghandle, - struct llog_operations **lop) -{ - if (loghandle == NULL) - return -EINVAL; - - return llog_obd2ops(loghandle->lgh_ctxt, lop); -} - -static inline int llog_data_len(int len) -{ - return size_round(len); -} - -static inline struct llog_ctxt *llog_get_context(struct obd_device *obd, - int index) -{ - if (index < 0 || index >= LLOG_MAX_CTXTS) - return NULL; - - return obd->obd_llog_ctxt[index]; -} - -static inline int llog_write_rec(struct llog_handle *handle, - struct llog_rec_hdr *rec, - struct llog_cookie *logcookies, - int numcookies, void *buf, int idx) -{ - struct llog_operations *lop; - int rc, buflen; - ENTRY; - - rc = llog_handle2ops(handle, &lop); - if (rc) - RETURN(rc); - if (lop->lop_write_rec == NULL) - RETURN(-EOPNOTSUPP); - - if (buf) - buflen = rec->lrh_len + sizeof(struct llog_rec_hdr) - + sizeof(struct llog_rec_tail); - else - buflen = rec->lrh_len; - LASSERT(size_round(buflen) == buflen); - - rc = lop->lop_write_rec(handle, rec, logcookies, numcookies, buf, idx); - RETURN(rc); -} - -static inline int llog_read_header(struct llog_handle *handle) -{ - struct llog_operations *lop; - int rc; - ENTRY; - - rc = llog_handle2ops(handle, &lop); - if (rc) - RETURN(rc); - if (lop->lop_read_header == NULL) - RETURN(-EOPNOTSUPP); - - rc = lop->lop_read_header(handle); - RETURN(rc); -} - -static inline int llog_destroy(struct llog_handle *handle) -{ - struct llog_operations *lop; - int rc; - ENTRY; - - rc = llog_handle2ops(handle, &lop); - if (rc) - RETURN(rc); - if (lop->lop_destroy == NULL) - RETURN(-EOPNOTSUPP); - - rc = lop->lop_destroy(handle); - RETURN(rc); -} - -#if 0 -static inline int llog_cancel(struct obd_export *exp, - struct lov_stripe_md *lsm, int count, - struct llog_cookie *cookies, int flags) -{ - struct llog_operations *lop; - int rc; - ENTRY; - - rc = llog_handle2ops(loghandle, &lop); - if (rc) - RETURN(rc); - if (lop->lop_cancel == NULL) - RETURN(-EOPNOTSUPP); - - rc = lop->lop_cancel(exp, lsm, count, cookies, flags); - RETURN(rc); -} +#ifndef _LUSTRE_LOG_H +#error Do not #include this file directly. #include instead #endif -static inline int llog_next_block(struct llog_handle *loghandle, int *cur_idx, - int next_idx, __u64 *cur_offset, void *buf, - int len) -{ - struct llog_operations *lop; - int rc; - ENTRY; - - rc = llog_handle2ops(loghandle, &lop); - if (rc) - RETURN(rc); - if (lop->lop_next_block == NULL) - RETURN(-EOPNOTSUPP); - - rc = lop->lop_next_block(loghandle, cur_idx, next_idx, cur_offset, buf, - len); - RETURN(rc); -} - -static inline int llog_create(struct llog_ctxt *ctxt, struct llog_handle **res, - struct llog_logid *logid, char *name) -{ - struct llog_operations *lop; - int rc; - ENTRY; - - rc = llog_obd2ops(ctxt, &lop); - if (rc) - RETURN(rc); - if (lop->lop_create == NULL) - RETURN(-EOPNOTSUPP); - - rc = lop->lop_create(ctxt, res, logid, name); - RETURN(rc); -} - -static inline int llog_connect(struct llog_ctxt *ctxt, int count, - struct llog_logid *logid, struct llog_gen *gen, - struct obd_uuid *uuid) -{ - struct llog_operations *lop; - int rc; - ENTRY; - - rc = llog_obd2ops(ctxt, &lop); - if (rc) - RETURN(rc); - if (lop->lop_connect == NULL) - RETURN(-EOPNOTSUPP); - - rc = lop->lop_connect(ctxt, count, logid, gen, uuid); - RETURN(rc); -} +#define LUSTRE_LOG_SERVER #endif