* GPL HEADER END
*/
/*
- * Copyright (c) 2013, Intel Corporation.
+ * Copyright (c) 2013, 2014, Intel Corporation.
*/
/*
* lustre/include/lustre_update.h
#ifndef _LUSTRE_UPDATE_H
#define _LUSTRE_UPDATE_H
#include <lustre_net.h>
+#include <dt_object.h>
#define OUT_UPDATE_INIT_BUFFER_SIZE 4096
#define OUT_UPDATE_REPLY_SIZE 8192
-struct dt_object;
-struct dt_object_hint;
-struct dt_object_format;
-struct dt_allocation_hint;
struct dt_key;
struct dt_rec;
-struct thandle;
+struct object_update_param;
struct update_buffer {
struct object_update_request *ub_req;
struct dt_update_request {
struct dt_device *dur_dt;
/* attached itself to thandle */
- struct list_head dur_list;
int dur_flags;
/* update request result */
int dur_rc;
struct list_head dur_cb_items;
};
+struct update_params {
+ struct object_update_param up_params[0];
+};
+
+static inline size_t update_params_size(const struct update_params *params,
+ unsigned int param_count)
+{
+ struct object_update_param *param;
+ size_t total_size = sizeof(*params);
+ unsigned int i;
+
+ param = (struct object_update_param *)¶ms->up_params[0];
+ for (i = 0; i < param_count; i++) {
+ size_t size = object_update_param_size(param);
+
+ param = (struct object_update_param *)((char *)param + size);
+ total_size += size;
+ }
+
+ return total_size;
+}
+
+static inline struct object_update_param *
+update_params_get_param(const struct update_params *params,
+ unsigned int index, unsigned int param_count)
+{
+ struct object_update_param *param;
+ unsigned int i;
+
+ if (index > param_count)
+ return NULL;
+
+ param = (struct object_update_param *)¶ms->up_params[0];
+ for (i = 0; i < index; i++)
+ param = (struct object_update_param *)((char *)param +
+ object_update_param_size(param));
+
+ return param;
+}
+
+struct update_op {
+ struct lu_fid uop_fid;
+ __u16 uop_type;
+ __u16 uop_param_count;
+ __u16 uop_params_off[0];
+};
+
+static inline size_t
+update_op_size(unsigned int param_count)
+{
+ return offsetof(struct update_op, uop_params_off[param_count]);
+}
+
+static inline struct update_op *
+update_op_next_op(const struct update_op *uop)
+{
+ return (struct update_op *)((char *)uop +
+ update_op_size(uop->uop_param_count));
+}
+
+/* All of updates in the mulitple_update_record */
+struct update_ops {
+ struct update_op uops_op[0];
+};
+
+static inline size_t update_ops_size(const struct update_ops *ops,
+ unsigned int update_count)
+{
+ struct update_op *op;
+ size_t total_size = sizeof(*ops);
+ unsigned int i;
+
+ op = (struct update_op *)&ops->uops_op[0];
+ for (i = 0; i < update_count; i++, op = update_op_next_op(op))
+ total_size += update_op_size(op->uop_param_count);
+
+ return total_size;
+}
+
+/*
+ * This is the update record format used to store the updates in
+ * disk. All updates of the operation will be stored in ur_ops.
+ * All of parameters for updates of the operation will be stored
+ * in ur_params.
+ * To save the space of the record, parameters in ur_ops will only
+ * remember their offset in ur_params, so to avoid storing duplicate
+ * parameters in ur_params, which can help us save a lot space for
+ * operation like creating striped directory.
+ */
+struct update_records {
+ __u64 ur_master_transno;
+ __u64 ur_batchid;
+ __u32 ur_flags;
+ __u32 ur_param_count;
+ __u32 ur_update_count;
+ struct update_ops ur_ops;
+ /* Note ur_ops has a variable size, so comment out
+ * the following ur_params, in case some use it directly
+ * update_records->ur_params
+ *
+ * struct update_params ur_params;
+ */
+};
+
+struct llog_update_record {
+ struct llog_rec_hdr lur_hdr;
+ struct update_records lur_update_rec;
+ /* Note ur_update_rec has a variable size, so comment out
+ * the following ur_tail, in case someone use it directly
+ *
+ * struct llog_rec_tail lur_tail;
+ */
+};
+
+static inline struct update_params *
+update_records_get_params(const struct update_records *record)
+{
+ return (struct update_params *)((char *)record +
+ offsetof(struct update_records, ur_ops) +
+ update_ops_size(&record->ur_ops, record->ur_update_count));
+}
+
+static inline size_t
+update_records_size(const struct update_records *record)
+{
+ struct update_params *params;
+
+ params = update_records_get_params(record);
+
+ return cfs_size_round(offsetof(struct update_records, ur_ops) +
+ update_ops_size(&record->ur_ops, record->ur_update_count) +
+ update_params_size(params, record->ur_param_count));
+}
+
+static inline size_t
+llog_update_record_size(const struct llog_update_record *lur)
+{
+ return cfs_size_round(sizeof(lur->lur_hdr) +
+ update_records_size(&lur->lur_update_rec) +
+ sizeof(struct llog_rec_tail));
+}
+
+static inline struct update_op *
+update_ops_get_op(const struct update_ops *ops, unsigned int index,
+ unsigned int update_count)
+{
+ struct update_op *op;
+ unsigned int i;
+
+ if (index > update_count)
+ return NULL;
+
+ op = (struct update_op *)&ops->uops_op[0];
+ for (i = 0; i < index; i++)
+ op = update_op_next_op(op);
+
+ return op;
+}
+
static inline void
*object_update_param_get(const struct object_update *update, size_t index,
size_t *size)
size_t i;
if (index >= update->ou_params_count)
- return NULL;
+ return ERR_PTR(-EINVAL);
param = &update->ou_params[0];
for (i = 0; i < index; i++)
return 0;
}
-static inline void update_inc_batchid(struct dt_update_request *update)
-{
- update->dur_batchid++;
-}
+/**
+ * Attached in the thandle to record the updates for distribute
+ * distribution.
+ */
+struct thandle_update_records {
+ /* All of updates for the cross-MDT operation. */
+ struct llog_update_record *tur_update_records;
+ size_t tur_update_records_buf_size;
+
+ /* All of parameters for the cross-MDT operation */
+ struct update_params *tur_update_params;
+ unsigned int tur_update_param_count;
+ size_t tur_update_params_buf_size;
+};
+
+#define TOP_THANDLE_MAGIC 0x20140917
+/* {top,sub}_thandle are used to manage distributed transactions which
+ * include updates on several nodes. A top_handle represents the
+ * whole operation, and sub_thandle represents updates on each node. */
+struct top_thandle {
+ struct thandle tt_super;
+ __u32 tt_magic;
+ atomic_t tt_refcount;
+ /* The master sub transaction. */
+ struct thandle *tt_master_sub_thandle;
+
+ /* Other sub thandle will be listed here. */
+ struct list_head tt_sub_thandle_list;
+
+ /* All of update records will packed here */
+ struct thandle_update_records *tt_update_records;
+};
+
+struct sub_thandle {
+ /* point to the osd/osp_thandle */
+ struct thandle *st_sub_th;
+
+ /* linked to top_thandle */
+ struct list_head st_sub_list;
+
+ /* If this sub thandle is committed */
+ bool st_committed:1,
+ st_record_update:1;
+};
+
/* target/out_lib.c */
-struct thandle_update;
-struct dt_update_request *out_find_update(struct thandle_update *tu,
- struct dt_device *dt_dev);
-void dt_update_request_destroy(struct dt_update_request *update);
-struct dt_update_request *dt_update_request_create(struct dt_device *dt);
-struct dt_update_request *dt_update_request_find_or_create(struct thandle *th,
- struct dt_object *dt);
-int out_prep_update_req(const struct lu_env *env, struct obd_import *imp,
- const struct object_update_request *ureq,
- struct ptlrpc_request **reqp);
-int out_remote_sync(const struct lu_env *env, struct obd_import *imp,
- struct dt_update_request *update,
- struct ptlrpc_request **reqp);
-int out_update_pack(const struct lu_env *env, struct update_buffer *ubuf,
- enum update_type op, const struct lu_fid *fid,
- int params_count, __u16 *param_sizes, const void **bufs,
- __u64 batchid);
-int out_create_pack(const struct lu_env *env, struct update_buffer *ubuf,
- const struct lu_fid *fid, struct lu_attr *attr,
- struct dt_allocation_hint *hint,
- struct dt_object_format *dof, __u64 batchid);
+int out_update_pack(const struct lu_env *env, struct object_update *update,
+ size_t max_update_size, enum update_type op,
+ const struct lu_fid *fid, unsigned int params_count,
+ __u16 *param_sizes, const void **param_bufs);
+int out_create_pack(const struct lu_env *env, struct object_update *update,
+ size_t max_update_size, const struct lu_fid *fid,
+ const struct lu_attr *attr, struct dt_allocation_hint *hint,
+ struct dt_object_format *dof);
int out_object_destroy_pack(const struct lu_env *env,
- struct update_buffer *ubuf,
- const struct lu_fid *fid, __u64 batchid);
-int out_index_delete_pack(const struct lu_env *env, struct update_buffer *ubuf,
- const struct lu_fid *fid, const struct dt_key *key,
- __u64 batchid);
-int out_index_insert_pack(const struct lu_env *env, struct update_buffer *ubuf,
+ struct object_update *update,
+ size_t max_update_size,
+ const struct lu_fid *fid);
+int out_index_delete_pack(const struct lu_env *env,
+ struct object_update *update, size_t max_update_size,
+ const struct lu_fid *fid, const struct dt_key *key);
+int out_index_insert_pack(const struct lu_env *env,
+ struct object_update *update, size_t max_update_size,
const struct lu_fid *fid, const struct dt_rec *rec,
- const struct dt_key *key, __u64 batchid);
-int out_xattr_set_pack(const struct lu_env *env, struct update_buffer *ubuf,
+ const struct dt_key *key);
+int out_xattr_set_pack(const struct lu_env *env,
+ struct object_update *update, size_t max_update_size,
const struct lu_fid *fid, const struct lu_buf *buf,
- const char *name, int flag, __u64 batchid);
-int out_xattr_del_pack(const struct lu_env *env, struct update_buffer *ubuf,
- const struct lu_fid *fid, const char *name,
- __u64 batchid);
-int out_attr_set_pack(const struct lu_env *env, struct update_buffer *ubuf,
- const struct lu_fid *fid, const struct lu_attr *attr,
- __u64 batchid);
-int out_ref_add_pack(const struct lu_env *env, struct update_buffer *ubuf,
- const struct lu_fid *fid, __u64 batchid);
-int out_ref_del_pack(const struct lu_env *env, struct update_buffer *ubuf,
- const struct lu_fid *fid, __u64 batchid);
-int out_write_pack(const struct lu_env *env, struct update_buffer *ubuf,
+ const char *name, __u32 flag);
+int out_xattr_del_pack(const struct lu_env *env,
+ struct object_update *update, size_t max_update_size,
+ const struct lu_fid *fid, const char *name);
+int out_attr_set_pack(const struct lu_env *env,
+ struct object_update *update, size_t max_update_size,
+ const struct lu_fid *fid, const struct lu_attr *attr);
+int out_ref_add_pack(const struct lu_env *env,
+ struct object_update *update, size_t max_update_size,
+ const struct lu_fid *fid);
+int out_ref_del_pack(const struct lu_env *env,
+ struct object_update *update, size_t max_update_size,
+ const struct lu_fid *fid);
+int out_write_pack(const struct lu_env *env,
+ struct object_update *update, size_t max_update_size,
const struct lu_fid *fid, const struct lu_buf *buf,
- loff_t pos, __u64 batchid);
-int out_attr_get_pack(const struct lu_env *env, struct update_buffer *ubuf,
+ __u64 pos);
+int out_attr_get_pack(const struct lu_env *env,
+ struct object_update *update, size_t max_update_size,
const struct lu_fid *fid);
-int out_index_lookup_pack(const struct lu_env *env, struct update_buffer *ubuf,
+int out_index_lookup_pack(const struct lu_env *env,
+ struct object_update *update, size_t max_update_size,
const struct lu_fid *fid, struct dt_rec *rec,
const struct dt_key *key);
-int out_xattr_get_pack(const struct lu_env *env, struct update_buffer *ubuf,
+int out_xattr_get_pack(const struct lu_env *env,
+ struct object_update *update, size_t max_update_size,
const struct lu_fid *fid, const char *name);
+
+const char *update_op_str(__u16 opcode);
+
+/* target/update_trans.c */
+struct thandle *thandle_get_sub_by_dt(const struct lu_env *env,
+ struct thandle *th,
+ struct dt_device *sub_dt);
+
+static inline struct thandle *
+thandle_get_sub(const struct lu_env *env, struct thandle *th,
+ const struct dt_object *sub_obj)
+{
+ return thandle_get_sub_by_dt(env, th, lu2dt_dev(sub_obj->do_lu.lo_dev));
+}
+
+struct thandle *
+top_trans_create(const struct lu_env *env, struct dt_device *master_dev);
+
+int top_trans_start(const struct lu_env *env, struct dt_device *master_dev,
+ struct thandle *th);
+
+int top_trans_stop(const struct lu_env *env, struct dt_device *master_dev,
+ struct thandle *th);
+
+void top_thandle_destroy(struct top_thandle *top_th);
+
+/* update_records.c */
+int update_records_create_pack(const struct lu_env *env,
+ struct update_ops *ops,
+ unsigned int *op_count,
+ size_t *max_ops_size,
+ struct update_params *params,
+ unsigned int *param_count,
+ size_t *max_param_size,
+ const struct lu_fid *fid,
+ const struct lu_attr *attr,
+ const struct dt_allocation_hint *hint,
+ struct dt_object_format *dof);
+int update_records_attr_set_pack(const struct lu_env *env,
+ struct update_ops *ops,
+ unsigned int *op_count,
+ size_t *max_ops_size,
+ struct update_params *params,
+ unsigned int *param_count,
+ size_t *max_param_size,
+ const struct lu_fid *fid,
+ const struct lu_attr *attr);
+int update_records_ref_add_pack(const struct lu_env *env,
+ struct update_ops *ops,
+ unsigned int *op_count,
+ size_t *max_ops_size,
+ struct update_params *params,
+ unsigned int *param_count,
+ size_t *max_param_size,
+ const struct lu_fid *fid);
+int update_records_ref_del_pack(const struct lu_env *env,
+ struct update_ops *ops,
+ unsigned int *op_count,
+ size_t *max_ops_size,
+ struct update_params *params,
+ unsigned int *param_count,
+ size_t *max_param_size,
+ const struct lu_fid *fid);
+int update_records_object_destroy_pack(const struct lu_env *env,
+ struct update_ops *ops,
+ unsigned int *op_count,
+ size_t *max_ops_size,
+ struct update_params *params,
+ unsigned int *param_count,
+ size_t *max_param_size,
+ const struct lu_fid *fid);
+int update_records_index_insert_pack(const struct lu_env *env,
+ struct update_ops *ops,
+ unsigned int *op_count,
+ size_t *max_ops_size,
+ struct update_params *params,
+ unsigned int *param_count,
+ size_t *max_param_size,
+ const struct lu_fid *fid,
+ const struct dt_rec *rec,
+ const struct dt_key *key);
+int update_records_index_delete_pack(const struct lu_env *env,
+ struct update_ops *ops,
+ unsigned int *op_count,
+ size_t *max_ops_size,
+ struct update_params *params,
+ unsigned int *param_count,
+ size_t *max_param_size,
+ const struct lu_fid *fid,
+ const struct dt_key *key);
+int update_records_xattr_set_pack(const struct lu_env *env,
+ struct update_ops *ops,
+ unsigned int *op_count,
+ size_t *max_ops_size,
+ struct update_params *params,
+ unsigned int *param_count,
+ size_t *max_param_size,
+ const struct lu_fid *fid,
+ const struct lu_buf *buf, const char *name,
+ __u32 flag);
+int update_records_xattr_del_pack(const struct lu_env *env,
+ struct update_ops *ops,
+ unsigned int *op_count,
+ size_t *max_ops_size,
+ struct update_params *params,
+ unsigned int *param_count,
+ size_t *max_param_size,
+ const struct lu_fid *fid,
+ const char *name);
+int update_records_write_pack(const struct lu_env *env,
+ struct update_ops *ops,
+ unsigned int *op_count,
+ size_t *max_ops_size,
+ struct update_params *params,
+ unsigned int *param_count,
+ size_t *max_param_size,
+ const struct lu_fid *fid,
+ const struct lu_buf *buf,
+ __u64 pos);
+
+int tur_update_records_extend(struct thandle_update_records *tur,
+ size_t new_size);
+int tur_update_params_extend(struct thandle_update_records *tur,
+ size_t new_size);
+int check_and_prepare_update_record(const struct lu_env *env,
+ struct thandle *th);
+int merge_params_updates_buf(const struct lu_env *env,
+ struct thandle_update_records *tur);
+int tur_update_extend(struct thandle_update_records *tur,
+ size_t new_op_size, size_t new_param_size);
+
+#define update_record_pack(name, th, ...) \
+({ \
+ struct top_thandle *top_th; \
+ struct thandle_update_records *tur; \
+ struct llog_update_record *lur; \
+ size_t avail_param_size; \
+ size_t avail_op_size; \
+ int ret; \
+ \
+ while (1) { \
+ top_th = container_of(th, struct top_thandle, tt_super);\
+ tur = top_th->tt_update_records; \
+ lur = tur->tur_update_records; \
+ avail_param_size = tur->tur_update_params_buf_size - \
+ update_params_size(tur->tur_update_params, \
+ tur->tur_update_param_count); \
+ avail_op_size = tur->tur_update_records_buf_size - \
+ llog_update_record_size(lur); \
+ ret = update_records_##name##_pack(env, \
+ &lur->lur_update_rec.ur_ops, \
+ &lur->lur_update_rec.ur_update_count, \
+ &avail_op_size, \
+ tur->tur_update_params, \
+ &tur->tur_update_param_count, \
+ &avail_param_size, __VA_ARGS__); \
+ if (ret == -E2BIG) { \
+ ret = tur_update_extend(tur, avail_op_size, \
+ avail_param_size); \
+ if (ret != 0) \
+ break; \
+ continue; \
+ } else { \
+ break; \
+ } \
+ } \
+ ret; \
+})
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff