32115b105a
HAST allows to transparently store data on two physically separated machines connected over the TCP/IP network. HAST works in Primary-Secondary (Master-Backup, Master-Slave) configuration, which means that only one of the cluster nodes can be active at any given time. Only Primary node is able to handle I/O requests to HAST-managed devices. Currently HAST is limited to two cluster nodes in total. HAST operates on block level - it provides disk-like devices in /dev/hast/ directory for use by file systems and/or applications. Working on block level makes it transparent for file systems and applications. There in no difference between using HAST-provided device and raw disk, partition, etc. All of them are just regular GEOM providers in FreeBSD. For more information please consult hastd(8), hastctl(8) and hast.conf(5) manual pages, as well as http://wiki.FreeBSD.org/HAST. Sponsored by: FreeBSD Foundation Sponsored by: OMCnet Internet Service GmbH Sponsored by: TransIP BV
159 lines
6.3 KiB
C
159 lines
6.3 KiB
C
/*-
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* Copyright (c) 2009-2010 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Pawel Jakub Dawidek under sponsorship from
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* the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _NV_H_
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#define _NV_H_
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#include <sys/cdefs.h>
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <ebuf.h>
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#define NV_TYPE_INT8 1
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#define NV_TYPE_UINT8 2
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#define NV_TYPE_INT16 3
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#define NV_TYPE_UINT16 4
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#define NV_TYPE_INT32 5
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#define NV_TYPE_UINT32 6
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#define NV_TYPE_INT64 7
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#define NV_TYPE_UINT64 8
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#define NV_TYPE_INT8_ARRAY 9
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#define NV_TYPE_UINT8_ARRAY 10
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#define NV_TYPE_INT16_ARRAY 11
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#define NV_TYPE_UINT16_ARRAY 12
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#define NV_TYPE_INT32_ARRAY 13
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#define NV_TYPE_UINT32_ARRAY 14
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#define NV_TYPE_INT64_ARRAY 15
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#define NV_TYPE_UINT64_ARRAY 16
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#define NV_TYPE_STRING 17
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#define NV_TYPE_MASK 0x7f
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#define NV_TYPE_FIRST NV_TYPE_INT8
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#define NV_TYPE_LAST NV_TYPE_STRING
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#define NV_ORDER_NETWORK 0x00
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#define NV_ORDER_HOST 0x80
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#define NV_ORDER_MASK 0x80
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struct nv;
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struct nv *nv_alloc(void);
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void nv_free(struct nv *nv);
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int nv_error(const struct nv *nv);
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int nv_set_error(struct nv *nv, int error);
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int nv_validate(struct nv *nv, size_t *extrap);
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struct ebuf *nv_hton(struct nv *nv);
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struct nv *nv_ntoh(struct ebuf *eb);
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void nv_add_int8(struct nv *nv, int8_t value, const char *namefmt, ...)
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__printflike(3, 4);
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void nv_add_uint8(struct nv *nv, uint8_t value, const char *namefmt, ...)
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__printflike(3, 4);
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void nv_add_int16(struct nv *nv, int16_t value, const char *namefmt, ...)
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__printflike(3, 4);
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void nv_add_uint16(struct nv *nv, uint16_t value, const char *namefmt, ...)
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__printflike(3, 4);
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void nv_add_int32(struct nv *nv, int32_t value, const char *namefmt, ...)
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__printflike(3, 4);
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void nv_add_uint32(struct nv *nv, uint32_t value, const char *namefmt, ...)
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__printflike(3, 4);
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void nv_add_int64(struct nv *nv, int64_t value, const char *namefmt, ...)
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__printflike(3, 4);
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void nv_add_uint64(struct nv *nv, uint64_t value, const char *namefmt, ...)
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__printflike(3, 4);
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void nv_add_int8_array(struct nv *nv, const int8_t *value, size_t size,
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const char *namefmt, ...) __printflike(4, 5);
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void nv_add_uint8_array(struct nv *nv, const uint8_t *value, size_t size,
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const char *namefmt, ...) __printflike(4, 5);
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void nv_add_int16_array(struct nv *nv, const int16_t *value, size_t size,
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const char *namefmt, ...) __printflike(4, 5);
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void nv_add_uint16_array(struct nv *nv, const uint16_t *value, size_t size,
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const char *namefmt, ...) __printflike(4, 5);
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void nv_add_int32_array(struct nv *nv, const int32_t *value, size_t size,
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const char *namefmt, ...) __printflike(4, 5);
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void nv_add_uint32_array(struct nv *nv, const uint32_t *value, size_t size,
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const char *namefmt, ...) __printflike(4, 5);
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void nv_add_int64_array(struct nv *nv, const int64_t *value, size_t size,
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const char *namefmt, ...) __printflike(4, 5);
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void nv_add_uint64_array(struct nv *nv, const uint64_t *value, size_t size,
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const char *namefmt, ...) __printflike(4, 5);
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void nv_add_string(struct nv *nv, const char *value, const char *namefmt, ...)
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__printflike(3, 4);
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void nv_add_stringf(struct nv *nv, const char *name, const char *valuefmt, ...)
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__printflike(3, 4);
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void nv_add_stringv(struct nv *nv, const char *name, const char *valuefmt,
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va_list valueap) __printflike(3, 0);
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int8_t nv_get_int8(struct nv *nv, const char *namefmt, ...)
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__printflike(2, 3);
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uint8_t nv_get_uint8(struct nv *nv, const char *namefmt, ...)
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__printflike(2, 3);
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int16_t nv_get_int16(struct nv *nv, const char *namefmt, ...)
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__printflike(2, 3);
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uint16_t nv_get_uint16(struct nv *nv, const char *namefmt, ...)
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__printflike(2, 3);
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int32_t nv_get_int32(struct nv *nv, const char *namefmt, ...)
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__printflike(2, 3);
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uint32_t nv_get_uint32(struct nv *nv, const char *namefmt, ...)
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__printflike(2, 3);
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int64_t nv_get_int64(struct nv *nv, const char *namefmt, ...)
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__printflike(2, 3);
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uint64_t nv_get_uint64(struct nv *nv, const char *namefmt, ...)
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__printflike(2, 3);
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const int8_t *nv_get_int8_array(struct nv *nv, size_t *sizep,
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const char *namefmt, ...) __printflike(3, 4);
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const uint8_t *nv_get_uint8_array(struct nv *nv, size_t *sizep,
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const char *namefmt, ...) __printflike(3, 4);
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const int16_t *nv_get_int16_array(struct nv *nv, size_t *sizep,
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const char *namefmt, ...) __printflike(3, 4);
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const uint16_t *nv_get_uint16_array(struct nv *nv, size_t *sizep,
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const char *namefmt, ...) __printflike(3, 4);
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const int32_t *nv_get_int32_array(struct nv *nv, size_t *sizep,
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const char *namefmt, ...) __printflike(3, 4);
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const uint32_t *nv_get_uint32_array(struct nv *nv, size_t *sizep,
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const char *namefmt, ...) __printflike(3, 4);
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const int64_t *nv_get_int64_array(struct nv *nv, size_t *sizep,
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const char *namefmt, ...) __printflike(3, 4);
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const uint64_t *nv_get_uint64_array(struct nv *nv, size_t *sizep,
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const char *namefmt, ...) __printflike(3, 4);
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const char *nv_get_string(struct nv *nv, const char *namefmt, ...)
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__printflike(2, 3);
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void nv_dump(struct nv *nv);
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#endif /* !_NV_H_ */
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