fsync_fops.h

Go to the documentation of this file.

/* -*- C -*- */
/*
 * Copyright (c) 2014-2020 Seagate Technology LLC and/or its Affiliates
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * For any questions about this software or licensing,
 * please email opensource@seagate.com or cortx-questions@seagate.com.
 *
 */


#pragma once

#ifndef __MOTR_MDSERVICE_FSYNC_FOPS_H__
#define __MOTR_MDSERVICE_FSYNC_FOPS_H__

#include "lib/types.h" /* uint32_t uin64_t ... */
#include "xcode/xcode_attr.h" /* M0_XCA_RECORD */
#include "fop/fom.h"
#include "be/tx.h"
#include "be/tx_xc.h"
#include "fop/wire.h"
#include "fop/wire_xc.h"

/*
 * A fsync fop is sent to a mdservice/ioservice instance to guarantee all the
 * BE transactions up to certain point have been successfully committed.
 *
 * This code is not in md_fops.h because we need it to be reusable from the
 * ioservice. The rest of fops in md_fops.h must remain isolated from ioservice.
 */


struct m0_fop_fsync {
        struct m0_be_tx_remid   ff_be_remid;

        uint32_t                ff_fsync_mode;
} M0_XCA_RECORD M0_XCA_DOMAIN(rpc);

enum m0_fsync_mode {
        M0_FSYNC_MODE_PASSIVE,
        M0_FSYNC_MODE_ACTIVE,
};

struct m0_fop_fsync_rep {
        int32_t                ffr_rc;

        struct m0_be_tx_remid   ffr_be_remid;
} M0_XCA_RECORD M0_XCA_DOMAIN(rpc);


extern struct m0_fop_type m0_fop_fsync_mds_fopt;
extern struct m0_fop_type m0_fop_fsync_rep_fopt;

extern const struct m0_fom_type_ops m0_fsync_fom_ops;
extern const struct m0_fop_type_ops m0_fsync_fop_ops;

M0_INTERNAL int m0_mdservice_fsync_fop_init(struct m0_reqh_service_type * svct);

M0_INTERNAL void m0_mdservice_fsync_fop_fini(void);

#endif /* __MOTR_MDSERVICE_FSYNC_FOPS_H__ */
/*
 *  Local variables:
 *  c-indentation-style: "K&R"
 *  c-basic-offset: 8
 *  tab-width: 8
 *  fill-column: 80
 *  scroll-step: 1
 *  End:
 */