1 /*$NetBSD: dm_target_mirror.c,v 1.8 2010/01/04 00:12:22 haad Exp $*/
4 * Copyright (c) 2009 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
33 * This file implements initial version of device-mapper mirror target.
35 #include <sys/types.h>
36 #include <sys/param.h>
43 * Init function called from dm_table_load_ioctl.
44 * start length mirror log_type #logargs logarg1 ... logargN #devs device1 offset1 ... deviceN offsetN
45 * 0 52428800 mirror clustered_disk 4 253:2 1024 UUID block_on_error 3 253:3 0 253:4 0 253:5 0
48 dm_target_mirror_init(dm_dev_t * dmv, void **target_config, char *argv)
51 printf("Mirror target init function called!!\n");
53 *target_config = NULL;
55 dmv->dev_type = DM_MIRROR_DEV;
59 /* Status routine called to get params string. */
61 dm_target_mirror_status(void *target_config)
65 /* Strategy routine called from dm_strategy. */
67 dm_target_mirror_strategy(dm_table_entry_t * table_en, struct buf * bp)
70 printf("Mirror target read function called!!\n");
79 /* Doesn't do anything here. */
81 dm_target_mirror_destroy(dm_table_entry_t * table_en)
83 table_en->target_config = NULL;
85 /* Unbusy target so we can unload it */
86 dm_target_unbusy(table_en->target);
90 /* Doesn't not need to do anything here. */
92 dm_target_mirror_deps(dm_table_entry_t * table_en, prop_array_t prop_array)
96 /* Unsupported for this target. */
98 dm_target_mirror_upcall(dm_table_entry_t * table_en, struct buf * bp)