-/* -*- 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.
*
* 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.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2016, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
*
* lustre/include/lustre_log.h
*
#ifndef _LUSTRE_LOG_H
#define _LUSTRE_LOG_H
-#if defined(__linux__)
-#include <linux/lustre_log.h>
-#elif defined(__APPLE__)
-#include <darwin/lustre_log.h>
-#elif defined(__WINNT__)
-#include <winnt/lustre_log.h>
-#else
-#error Unsupported operating system.
-#endif
+/** \defgroup log log
+ *
+ * @{
+ */
-#include <obd.h>
-#include <obd_ost.h>
-#include <lustre/lustre_idl.h>
+#include <obd_class.h>
+#include <dt_object.h>
+#include <uapi/linux/lustre/lustre_idl.h>
+#include <uapi/linux/lustre/lustre_log_user.h>
#define LOG_NAME_LIMIT(logname, name) \
snprintf(logname, sizeof(logname), "LOGS/%s", name)
#define LLOG_EEMPTY 4711
+enum llog_open_param {
+ LLOG_OPEN_EXISTS = 0x0000,
+ LLOG_OPEN_NEW = 0x0001,
+};
+
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 list_head phd_entry;
+ struct llog_handle *phd_cat_handle;
+ /* cookie of this log in its cat */
+ struct llog_cookie phd_cookie;
};
struct cat_handle_data {
- struct list_head chd_head;
- struct llog_handle *chd_current_log; /* currently open log */
+ struct list_head chd_head;
+ struct llog_handle *chd_current_log;/* currently open log */
+ struct llog_handle *chd_next_log; /* llog to be used next */
};
-/* 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;
- int lgh_cur_idx; /* used during llog_process */
- __u64 lgh_cur_offset; /* used during llog_process */
- struct llog_ctxt *lgh_ctxt;
- union {
- struct plain_handle_data phd;
- struct cat_handle_data chd;
- } u;
-};
+struct llog_handle;
/* llog.c - general API */
-typedef int (*llog_cb_t)(struct llog_handle *, struct llog_rec_hdr *, void *);
-typedef int (*llog_fill_rec_cb_t)(struct llog_rec_hdr *rec, void *data);
-extern struct llog_handle *llog_alloc_handle(void);
-int llog_init_handle(struct llog_handle *handle, int flags,
- struct obd_uuid *uuid);
-extern void llog_free_handle(struct llog_handle *handle);
-int llog_process(struct llog_handle *loghandle, llog_cb_t cb,
- void *data, void *catdata);
-int llog_reverse_process(struct llog_handle *loghandle, llog_cb_t cb,
- void *data, void *catdata);
-extern int llog_cancel_rec(struct llog_handle *loghandle, int index);
-extern int llog_close(struct llog_handle *cathandle);
-extern int llog_get_size(struct llog_handle *loghandle);
+int llog_init_handle(const struct lu_env *env, struct llog_handle *handle,
+ int flags, struct obd_uuid *uuid);
+int llog_copy_handler(const struct lu_env *env, struct llog_handle *llh,
+ struct llog_rec_hdr *rec, void *data);
+int llog_process(const struct lu_env *env, struct llog_handle *loghandle,
+ llog_cb_t cb, void *data, void *catdata);
+int llog_process_or_fork(const struct lu_env *env,
+ struct llog_handle *loghandle,
+ llog_cb_t cb, void *data, void *catdata, bool fork);
+int llog_reverse_process(const struct lu_env *env,
+ struct llog_handle *loghandle, llog_cb_t cb,
+ void *data, void *catdata);
+int llog_cancel_rec(const struct lu_env *env, struct llog_handle *loghandle,
+ int index);
+int llog_open(const struct lu_env *env, struct llog_ctxt *ctxt,
+ struct llog_handle **lgh, struct llog_logid *logid,
+ char *name, enum llog_open_param open_param);
+int llog_close(const struct lu_env *env, struct llog_handle *cathandle);
+int llog_is_empty(const struct lu_env *env, struct llog_ctxt *ctxt,
+ char *name);
+int llog_backup(const struct lu_env *env, struct obd_device *obd,
+ struct llog_ctxt *ctxt, struct llog_ctxt *bak_ctxt,
+ char *name, char *backup);
+int llog_read_header(const struct lu_env *env, struct llog_handle *handle,
+ const struct obd_uuid *uuid);
+__u64 llog_size(const struct lu_env *env, struct llog_handle *llh);
+
+/* llog_process flags */
+#define LLOG_FLAG_NODEAMON 0x0001
/* llog_cat.c - catalog api */
struct llog_process_data {
* in catalog.
*/
llog_cb_t lpd_cb;
+ /**
+ * Start processing the catalog from startcat/startidx
+ */
+ int lpd_startcat;
+ int lpd_startidx;
};
struct llog_process_cat_data {
int lpcd_last_idx;
};
-struct llog_process_cat_args {
- /**
- * Llog context used in recovery thread on OST (recov_thread.c)
- */
- struct llog_ctxt *lpca_ctxt;
- /**
- * Llog callback used in recovery thread on OST (recov_thread.c)
- */
- void *lpca_cb;
- /**
- * Data pointer for llog callback.
- */
- void *lpca_arg;
-};
-
-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_process_thread(void *data);
-int llog_cat_reverse_process(struct llog_handle *cat_llh, llog_cb_t cb, void *data);
-int llog_cat_set_first_idx(struct llog_handle *cathandle, int index);
-
+int llog_cat_close(const struct lu_env *env, struct llog_handle *cathandle);
+int llog_cat_add_rec(const struct lu_env *env, struct llog_handle *cathandle,
+ struct llog_rec_hdr *rec, struct llog_cookie *reccookie,
+ struct thandle *th);
+int llog_cat_declare_add_rec(const struct lu_env *env,
+ struct llog_handle *cathandle,
+ struct llog_rec_hdr *rec, struct thandle *th);
+int llog_cat_add(const struct lu_env *env, struct llog_handle *cathandle,
+ struct llog_rec_hdr *rec, struct llog_cookie *reccookie);
+int llog_cat_cancel_records(const struct lu_env *env,
+ struct llog_handle *cathandle, int count,
+ struct llog_cookie *cookies);
+int llog_cat_process_or_fork(const struct lu_env *env,
+ struct llog_handle *cat_llh, llog_cb_t cat_cb,
+ llog_cb_t cb, void *data, int startcat,
+ int startidx, bool fork);
+int llog_cat_process(const struct lu_env *env, struct llog_handle *cat_llh,
+ llog_cb_t cb, void *data, int startcat, int startidx);
+__u64 llog_cat_size(const struct lu_env *env, struct llog_handle *cat_llh);
+__u32 llog_cat_free_space(struct llog_handle *cat_llh);
+int llog_cat_reverse_process(const struct lu_env *env,
+ struct llog_handle *cat_llh, llog_cb_t cb,
+ void *data);
/* llog_obd.c */
-int llog_setup(struct obd_device *obd, struct obd_llog_group *olg, int index,
- struct obd_device *disk_obd, int count, struct llog_logid *logid,
- struct llog_operations *op);
-int __llog_ctxt_put(struct llog_ctxt *ctxt);
-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, struct obd_llog_group *olg,
- 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, struct obd_llog_group *olg,
- int idx, struct obd_uuid *uuid);
-int obd_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
- struct obd_device *disk_obd, int count,
- struct llog_catid *logid, struct obd_uuid *uuid);
-
-int obd_llog_finish(struct obd_device *obd, int count);
+int llog_setup(const struct lu_env *env, struct obd_device *obd,
+ struct obd_llog_group *olg, int index,
+ struct obd_device *disk_obd, struct llog_operations *op);
+int __llog_ctxt_put(const struct lu_env *env, struct llog_ctxt *ctxt);
+int llog_cleanup(const struct lu_env *env, struct llog_ctxt *);
+int llog_sync(struct llog_ctxt *ctxt, struct obd_export *exp, int flags);
+int llog_cancel(const struct lu_env *env, struct llog_ctxt *ctxt,
+ struct llog_cookie *cookies, int flags);
/* llog_ioctl.c */
-int llog_ioctl(struct llog_ctxt *ctxt, int cmd, struct obd_ioctl_data *data);
-int llog_catalog_list(struct obd_device *obd, int count,
- struct obd_ioctl_data *data);
+struct obd_ioctl_data;
+int llog_ioctl(const struct lu_env *env, struct llog_ctxt *ctxt, int cmd,
+ struct obd_ioctl_data *data);
+int llog_catalog_list(const struct lu_env *env, struct dt_device *d,
+ int count, struct obd_ioctl_data *data,
+ const struct lu_fid *fid);
/* 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,
- 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_obd_repl_connect(struct llog_ctxt *ctxt,
- 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_prev_block)(struct llog_handle *h,
- int prev_idx, 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, struct obd_llog_group *olg,
- 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,
- struct llog_logid *logid, struct llog_gen *gen,
- struct obd_uuid *uuid);
- /* XXX add 2 more: commit callbacks and llog recovery functions */
+ int (*lop_declare_destroy)(const struct lu_env *env,
+ struct llog_handle *handle, struct thandle *th);
+ int (*lop_destroy)(const struct lu_env *env,
+ struct llog_handle *handle, struct thandle *th);
+ int (*lop_next_block)(const struct lu_env *env, struct llog_handle *h,
+ int *curr_idx, int next_idx, __u64 *offset,
+ void *buf, int len);
+ int (*lop_prev_block)(const struct lu_env *env, struct llog_handle *h,
+ int prev_idx, void *buf, int len);
+ int (*lop_read_header)(const struct lu_env *env,
+ struct llog_handle *handle);
+ int (*lop_setup)(const struct lu_env *env, struct obd_device *obd,
+ struct obd_llog_group *olg, int ctxt_idx,
+ struct obd_device *disk_obd);
+ int (*lop_sync)(struct llog_ctxt *ctxt, struct obd_export *exp,
+ int flags);
+ int (*lop_cleanup)(const struct lu_env *env, struct llog_ctxt *ctxt);
+ int (*lop_cancel)(const struct lu_env *env, struct llog_ctxt *ctxt,
+ struct llog_cookie *cookies, int flags);
+ int (*lop_connect)(struct llog_ctxt *ctxt, struct llog_logid *logid,
+ struct llog_gen *gen, struct obd_uuid *uuid);
+ /**
+ * Any llog file must be opened first using llog_open(). Llog can be
+ * opened by name, logid or without both, in last case the new logid
+ * will be generated.
+ */
+ int (*lop_open)(const struct lu_env *env, struct llog_handle *lgh,
+ struct llog_logid *logid, char *name,
+ enum llog_open_param);
+ /**
+ * Opened llog may not exist and this must be checked where needed using
+ * the llog_exist() call.
+ */
+ int (*lop_exist)(struct llog_handle *lgh);
+ /**
+ * Close llog file and calls llog_free_handle() implicitly.
+ * Any opened llog must be closed by llog_close() call.
+ */
+ int (*lop_close)(const struct lu_env *env, struct llog_handle *handle);
+ /**
+ * Create new llog file. The llog must be opened.
+ * Must be used only for local llog operations.
+ */
+ int (*lop_declare_create)(const struct lu_env *env,
+ struct llog_handle *handle,
+ struct thandle *th);
+ int (*lop_create)(const struct lu_env *env, struct llog_handle *handle,
+ struct thandle *th);
+ /**
+ * write new record in llog. It appends records usually but can edit
+ * existing records too.
+ */
+ int (*lop_declare_write_rec)(const struct lu_env *env,
+ struct llog_handle *lgh,
+ struct llog_rec_hdr *rec,
+ int idx, struct thandle *th);
+ int (*lop_write_rec)(const struct lu_env *env,
+ struct llog_handle *loghandle,
+ struct llog_rec_hdr *rec,
+ struct llog_cookie *cookie,
+ int idx, struct thandle *th);
+ /**
+ * Add new record in llog catalog. Does the same as llog_write_rec()
+ * but using llog catalog.
+ */
+ int (*lop_declare_add)(const struct lu_env *env,
+ struct llog_handle *lgh,
+ struct llog_rec_hdr *rec, struct thandle *th);
+ int (*lop_add)(const struct lu_env *env, struct llog_handle *lgh,
+ struct llog_rec_hdr *rec, struct llog_cookie *cookie,
+ struct thandle *th);
+};
+
+/* In-memory descriptor for a log object or log catalog */
+struct llog_handle {
+ struct rw_semaphore lgh_lock;
+ struct mutex lgh_hdr_mutex; /* protect lgh_hdr data */
+ struct llog_logid lgh_id; /* id of this log */
+ struct llog_log_hdr *lgh_hdr; /* may be vmalloc'd */
+ size_t lgh_hdr_size;
+ struct dt_object *lgh_obj;
+ /* For a Catalog, is the last/newest used index for a plain slot.
+ * Used in conjunction with llh_cat_idx to handle Catalog wrap-around
+ * case, after it will have reached LLOG_HDR_BITMAP_SIZE, llh_cat_idx
+ * will become its upper limit */
+ int lgh_last_idx;
+ int lgh_cur_idx; /* used during llog_process */
+ __u64 lgh_cur_offset; /* used during llog_process */
+ struct llog_ctxt *lgh_ctxt;
+ union {
+ struct plain_handle_data phd;
+ struct cat_handle_data chd;
+ } u;
+ char *lgh_name;
+ void *private_data;
+ struct llog_operations *lgh_logops;
+ atomic_t lgh_refcount;
+
+ int lgh_max_size;
+ __u32 lgh_stale:1;
};
-/* 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 idx, int count,
- struct llog_catid *idarray);
+/* llog_osd.c */
+extern struct llog_operations llog_osd_ops;
+extern struct llog_operations llog_common_cat_ops;
+int llog_osd_get_cat_list(const struct lu_env *env, struct dt_device *d,
+ int idx, int count, struct llog_catid *idarray,
+ const struct lu_fid *fid);
+int llog_osd_put_cat_list(const struct lu_env *env, struct dt_device *d,
+ int idx, int count, struct llog_catid *idarray,
+ const struct lu_fid *fid);
-int llog_put_cat_list(struct obd_device *obd, struct obd_device *disk_obd,
- char *name, int idx, int count, struct llog_catid *idarray);
+#define LLOG_CTXT_FLAG_UNINITIALIZED 0x00000001
+#define LLOG_CTXT_FLAG_STOP 0x00000002
+
+/* Indicate the llog objects under this context are normal FID objects,
+ * instead of objects with local FID. */
+#define LLOG_CTXT_FLAG_NORMAL_FID 0x00000004
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_llog_group *loc_olg; /* group containing that ctxt */
struct obd_export *loc_exp; /* parent "disk" export (e.g. MDS) */
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_commit_master *loc_lcm;
- struct llog_canceld_ctxt *loc_llcd;
- struct semaphore loc_sem; /* protects loc_llcd and loc_imp */
- atomic_t loc_refcount;
- void *llog_proc_cb;
-};
-
-#define LCM_NAME_SIZE 64
-
-struct llog_commit_master {
- /**
- * Thread control flags (start, stop, etc.)
- */
- long lcm_flags;
- /**
- * Number of llcds onthis lcm.
- */
- atomic_t lcm_count;
- /**
- * Ptlrpc requests set. All cancel rpcs go via this request set.
- */
- struct ptlrpc_request_set *lcm_set;
- /**
- * Thread control structure. Used for control commit thread.
- */
- struct ptlrpcd_ctl lcm_pc;
- /**
- * Busy resources waitq
- */
- cfs_waitq_t lcm_waitq;
- /**
- * Commit thread name buffer. Only used for thread start.
- */
- char lcm_name[LCM_NAME_SIZE];
+ struct llog_operations *loc_logops;
+ struct llog_handle *loc_handle;
+ struct mutex loc_mutex; /* protect loc_imp */
+ atomic_t loc_refcount;
+ long loc_flags; /* flags, see above defines */
+ struct dt_object *loc_dir;
+ struct local_oid_storage *loc_los_nameless;
+ struct local_oid_storage *loc_los_named;
+ /* llog chunk size, and llog record size can not be bigger than
+ * loc_chunk_size */
+ __u32 loc_chunk_size;
};
-struct llog_canceld_ctxt {
- /**
- * Llog context this llcd is attached to. Used for accessing
- * ->loc_import and others in process of canceling cookies
- * gathered in this llcd.
- */
- struct llog_ctxt *llcd_ctxt;
- /**
- * Cancel thread control stucture pointer. Used for accessing
- * it to see if should stop processing and other needs.
- */
- struct llog_commit_master *llcd_lcm;
- /**
- * Maximal llcd size. Used in calculations on how much of room
- * left in llcd to cookie comming cookies.
- */
- int llcd_size;
- /**
- * Current llcd size while gathering cookies. This should not be
- * more than ->llcd_size. Used for determining if we need to
- * send this llcd (if full) and allocate new one. This is also
- * used for copying new cookie at the end of buffer.
- */
- int llcd_cookiebytes;
- /**
- * Pointer to the start of cookies buffer.
- */
- struct llog_cookie llcd_cookies[0];
-};
-
-/* ptlrpc/recov_thread.c */
-extern struct llog_commit_master *llog_recov_thread_init(char *name);
-extern void llog_recov_thread_fini(struct llog_commit_master *lcm,
- int force);
-extern int llog_recov_thread_start(struct llog_commit_master *lcm);
-extern void llog_recov_thread_stop(struct llog_commit_master *lcm,
- int force);
-
-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, LUSTRE_MDS_NAME))
- ctxt->loc_gen.mnt_cnt = obd->u.mds.mds_mount_count;
- else if (!strstr(obd->obd_type->typ_name, LUSTRE_OST_NAME))
- 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
#define LLOG_DEL_RECORD 0x0002
+#define LLOG_DEL_PLAIN 0x0003
static inline int llog_obd2ops(struct llog_ctxt *ctxt,
struct llog_operations **lop)
static inline int llog_handle2ops(struct llog_handle *loghandle,
struct llog_operations **lop)
{
- if (loghandle == NULL)
- return -EINVAL;
+ if (loghandle == NULL || loghandle->lgh_logops == NULL)
+ return -EINVAL;
- return llog_obd2ops(loghandle->lgh_ctxt, lop);
+ *lop = loghandle->lgh_logops;
+ return 0;
}
static inline int llog_data_len(int len)
{
- return size_round(len);
+ return cfs_size_round(len);
}
-static inline struct llog_ctxt *llog_ctxt_get(struct llog_ctxt *ctxt)
+static inline int llog_get_size(struct llog_handle *loghandle)
{
- LASSERT(atomic_read(&ctxt->loc_refcount) > 0);
- atomic_inc(&ctxt->loc_refcount);
- CDEBUG(D_INFO, "GETting ctxt %p : new refcount %d\n", ctxt,
- atomic_read(&ctxt->loc_refcount));
- return ctxt;
+ if (loghandle && loghandle->lgh_hdr)
+ return loghandle->lgh_hdr->llh_count;
+ return 0;
}
-static inline void llog_ctxt_put(struct llog_ctxt *ctxt)
+static inline struct llog_ctxt *llog_ctxt_get(struct llog_ctxt *ctxt)
{
- if (ctxt == NULL)
- return;
- LASSERT(atomic_read(&ctxt->loc_refcount) > 0);
- LASSERT(atomic_read(&ctxt->loc_refcount) < 0x5a5a5a);
- CDEBUG(D_INFO, "PUTting ctxt %p : new refcount %d\n", ctxt,
- atomic_read(&ctxt->loc_refcount) - 1);
- __llog_ctxt_put(ctxt);
+ atomic_inc(&ctxt->loc_refcount);
+ CDEBUG(D_INFO, "GETting ctxt %p : new refcount %d\n", ctxt,
+ atomic_read(&ctxt->loc_refcount));
+ return ctxt;
}
-static inline void llog_group_init(struct obd_llog_group *olg, int group)
+static inline void llog_ctxt_put(struct llog_ctxt *ctxt)
{
- cfs_waitq_init(&olg->olg_waitq);
- spin_lock_init(&olg->olg_lock);
- sema_init(&olg->olg_cat_processing, 1);
- olg->olg_group = group;
+ if (ctxt == NULL)
+ return;
+ LASSERT_ATOMIC_GT_LT(&ctxt->loc_refcount, 0, LI_POISON);
+ CDEBUG(D_INFO, "PUTting ctxt %p : new refcount %d\n", ctxt,
+ atomic_read(&ctxt->loc_refcount) - 1);
+ __llog_ctxt_put(NULL, ctxt);
}
-static inline void llog_group_set_export(struct obd_llog_group *olg,
- struct obd_export *exp)
+static inline void llog_group_init(struct obd_llog_group *olg)
{
- LASSERT(exp != NULL);
-
- spin_lock(&olg->olg_lock);
- if (olg->olg_exp != NULL && olg->olg_exp != exp)
- CWARN("%s: export for group %d is changed: 0x%p -> 0x%p\n",
- exp->exp_obd->obd_name, olg->olg_group,
- olg->olg_exp, exp);
- olg->olg_exp = exp;
- spin_unlock(&olg->olg_lock);
+ init_waitqueue_head(&olg->olg_waitq);
+ spin_lock_init(&olg->olg_lock);
+ mutex_init(&olg->olg_cat_processing);
}
static inline int llog_group_set_ctxt(struct obd_llog_group *olg,
struct llog_ctxt *ctxt, int index)
{
- LASSERT(index >= 0 && index < LLOG_MAX_CTXTS);
-
- spin_lock(&olg->olg_lock);
- if (olg->olg_ctxts[index] != NULL) {
- spin_unlock(&olg->olg_lock);
- return -EEXIST;
- }
- olg->olg_ctxts[index] = ctxt;
- spin_unlock(&olg->olg_lock);
- return 0;
+ LASSERT(index >= 0 && index < LLOG_MAX_CTXTS);
+
+ spin_lock(&olg->olg_lock);
+ if (olg->olg_ctxts[index] != NULL) {
+ spin_unlock(&olg->olg_lock);
+ return -EEXIST;
+ }
+ olg->olg_ctxts[index] = ctxt;
+ spin_unlock(&olg->olg_lock);
+ return 0;
}
static inline struct llog_ctxt *llog_group_get_ctxt(struct obd_llog_group *olg,
int index)
{
- struct llog_ctxt *ctxt;
-
- LASSERT(index >= 0 && index < LLOG_MAX_CTXTS);
-
- spin_lock(&olg->olg_lock);
- if (olg->olg_ctxts[index] == NULL) {
- ctxt = NULL;
- } else {
- ctxt = llog_ctxt_get(olg->olg_ctxts[index]);
- }
- spin_unlock(&olg->olg_lock);
- return ctxt;
+ struct llog_ctxt *ctxt;
+
+ LASSERT(index >= 0 && index < LLOG_MAX_CTXTS);
+
+ spin_lock(&olg->olg_lock);
+ if (olg->olg_ctxts[index] == NULL)
+ ctxt = NULL;
+ else
+ ctxt = llog_ctxt_get(olg->olg_ctxts[index]);
+ spin_unlock(&olg->olg_lock);
+ return ctxt;
+}
+
+static inline void llog_group_clear_ctxt(struct obd_llog_group *olg, int index)
+{
+ LASSERT(index >= 0 && index < LLOG_MAX_CTXTS);
+ spin_lock(&olg->olg_lock);
+ olg->olg_ctxts[index] = NULL;
+ spin_unlock(&olg->olg_lock);
}
static inline struct llog_ctxt *llog_get_context(struct obd_device *obd,
return (llog_group_ctxt_null(&obd->obd_olg, 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)
+static inline int llog_next_block(const struct lu_env *env,
+ struct llog_handle *loghandle, int *cur_idx,
+ int next_idx, __u64 *cur_offset, void *buf,
+ int len)
{
- struct llog_operations *lop;
- int raised, rc, buflen;
- ENTRY;
-
- rc = llog_handle2ops(handle, &lop);
- if (rc)
- RETURN(rc);
- LASSERT(lop);
- 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);
-
- raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
- if (!raised)
- cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
- rc = lop->lop_write_rec(handle, rec, logcookies, numcookies, buf, idx);
- if (!raised)
- cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
- RETURN(rc);
-}
+ struct llog_operations *lop;
+ int 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);
-}
+ ENTRY;
-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);
-}
+ rc = llog_handle2ops(loghandle, &lop);
+ if (rc)
+ RETURN(rc);
+ if (lop->lop_next_block == NULL)
+ RETURN(-EOPNOTSUPP);
-#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);
+ rc = lop->lop_next_block(env, loghandle, cur_idx, next_idx,
+ cur_offset, buf, len);
+ RETURN(rc);
}
-#endif
-static inline int llog_next_block(struct llog_handle *loghandle, int *cur_idx,
- int next_idx, __u64 *cur_offset, void *buf,
- int len)
+static inline int llog_prev_block(const struct lu_env *env,
+ struct llog_handle *loghandle,
+ int prev_idx, 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);
-}
+ struct llog_operations *lop;
+ int rc;
-static inline int llog_prev_block(struct llog_handle *loghandle,
- int prev_idx, void *buf, int len)
-{
- struct llog_operations *lop;
- int rc;
- ENTRY;
-
- rc = llog_handle2ops(loghandle, &lop);
- if (rc)
- RETURN(rc);
- if (lop->lop_prev_block == NULL)
- RETURN(-EOPNOTSUPP);
-
- rc = lop->lop_prev_block(loghandle, prev_idx, buf, len);
- RETURN(rc);
+ ENTRY;
+
+ rc = llog_handle2ops(loghandle, &lop);
+ if (rc)
+ RETURN(rc);
+ if (lop->lop_prev_block == NULL)
+ RETURN(-EOPNOTSUPP);
+
+ rc = lop->lop_prev_block(env, loghandle, prev_idx, buf, len);
+ RETURN(rc);
}
-static inline int llog_create(struct llog_ctxt *ctxt, struct llog_handle **res,
- struct llog_logid *logid, char *name)
+static inline int llog_connect(struct llog_ctxt *ctxt,
+ struct llog_logid *logid, struct llog_gen *gen,
+ struct obd_uuid *uuid)
{
- struct llog_operations *lop;
- int raised, rc;
- ENTRY;
-
- rc = llog_obd2ops(ctxt, &lop);
- if (rc)
- RETURN(rc);
- if (lop->lop_create == NULL)
- RETURN(-EOPNOTSUPP);
-
- raised = cfs_cap_raised(CFS_CAP_SYS_RESOURCE);
- if (!raised)
- cfs_cap_raise(CFS_CAP_SYS_RESOURCE);
- rc = lop->lop_create(ctxt, res, logid, name);
- if (!raised)
- cfs_cap_lower(CFS_CAP_SYS_RESOURCE);
- RETURN(rc);
+ 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, logid, gen, uuid);
+ RETURN(rc);
}
-static inline int llog_connect(struct llog_ctxt *ctxt,
- struct llog_logid *logid, struct llog_gen *gen,
- struct obd_uuid *uuid)
+static inline int llog_is_full(struct llog_handle *llh)
{
- 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, logid, gen, uuid);
- RETURN(rc);
+ return llh->lgh_last_idx >= LLOG_HDR_BITMAP_SIZE(llh->lgh_hdr) - 1;
}
+struct llog_cfg_rec {
+ struct llog_rec_hdr lcr_hdr;
+ struct lustre_cfg lcr_cfg;
+ struct llog_rec_tail lcr_tail;
+};
+
+struct llog_cfg_rec *lustre_cfg_rec_new(int cmd, struct lustre_cfg_bufs *bufs);
+void lustre_cfg_rec_free(struct llog_cfg_rec *lcr);
+
+enum {
+ LLOG_NEXT_IDX = -1,
+ LLOG_HEADER_IDX = 0,
+};
+
+/* llog.c */
+int llog_exist(struct llog_handle *loghandle);
+int llog_declare_create(const struct lu_env *env,
+ struct llog_handle *loghandle, struct thandle *th);
+int llog_create(const struct lu_env *env, struct llog_handle *handle,
+ struct thandle *th);
+int llog_trans_destroy(const struct lu_env *env, struct llog_handle *handle,
+ struct thandle *th);
+int llog_destroy(const struct lu_env *env, struct llog_handle *handle);
+
+int llog_declare_write_rec(const struct lu_env *env,
+ struct llog_handle *handle,
+ struct llog_rec_hdr *rec, int idx,
+ struct thandle *th);
+int llog_write_rec(const struct lu_env *env, struct llog_handle *handle,
+ struct llog_rec_hdr *rec, struct llog_cookie *logcookies,
+ int idx, struct thandle *th);
+int llog_add(const struct lu_env *env, struct llog_handle *lgh,
+ struct llog_rec_hdr *rec, struct llog_cookie *logcookies,
+ struct thandle *th);
+int llog_declare_add(const struct lu_env *env, struct llog_handle *lgh,
+ struct llog_rec_hdr *rec, struct thandle *th);
+int lustre_process_log(struct super_block *sb, char *logname,
+ struct config_llog_instance *cfg);
+int lustre_end_log(struct super_block *sb, char *logname,
+ struct config_llog_instance *cfg);
+int llog_open_create(const struct lu_env *env, struct llog_ctxt *ctxt,
+ struct llog_handle **res, struct llog_logid *logid,
+ char *name);
+int llog_erase(const struct lu_env *env, struct llog_ctxt *ctxt,
+ struct llog_logid *logid, char *name);
+int llog_write(const struct lu_env *env, struct llog_handle *loghandle,
+ struct llog_rec_hdr *rec, int idx);
+
+/** @} log */
+
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff