1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 1994-2002 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29/*
30 * raid operations
31 */
32
33#include <meta.h>
34#include <sys/lvm/md_mirror.h>
35
36/*
37 * resync raid
38 */
39int
40meta_raid_resync(
41	mdsetname_t		*sp,
42	mdname_t		*raidnp,
43	daddr_t			size,
44	md_error_t		*ep
45)
46{
47	char			*miscname;
48	md_resync_ioctl_t	ri;
49
50	/* should have a set */
51	assert(sp != NULL);
52	assert(sp->setno == MD_MIN2SET(meta_getminor(raidnp->dev)));
53
54	/* make sure we have a raid */
55	if ((miscname = metagetmiscname(raidnp, ep)) == NULL)
56		return (-1);
57	if (strcmp(miscname, MD_RAID) != 0) {
58		return (mdmderror(ep, MDE_NOT_RAID, meta_getminor(raidnp->dev),
59		    raidnp->cname));
60	}
61
62	/* start resync */
63	(void) memset(&ri, 0, sizeof (ri));
64	MD_SETDRIVERNAME(&ri, MD_RAID, sp->setno);
65	ri.ri_mnum = meta_getminor(raidnp->dev);
66	ri.ri_copysize = size;
67	if (metaioctl(MD_IOCSETSYNC, &ri, &ri.mde, raidnp->cname) != 0)
68		return (mdstealerror(ep, &ri.mde));
69
70	/* return success */
71	return (0);
72}
73
74/*
75 * NAME:	meta_raid_resync_all
76 * DESCRIPTION: loop through the RAID devices synch'ing all
77 * PARAMETERS:	char		*sp	- the set to synch
78 *		daddr_t		size	- resync size
79 *		md_error_t	*ep	- return error info
80 *
81 */
82int
83meta_raid_resync_all(
84	mdsetname_t	*sp,
85	daddr_t		size,
86	md_error_t	*ep
87)
88{
89	mdnamelist_t	*nlp = NULL;
90	mdnamelist_t	*p;
91	int		rval = 0, fval;
92
93	/* should have a set */
94	assert(sp != NULL);
95
96	/* get raids */
97	if (meta_get_raid_names(sp, &nlp, 0, ep) < 0)
98		return (-1);
99
100	/* fork a process */
101	if ((fval = md_daemonize(sp, ep)) != 0) {
102		/*
103		 * md_daemonize forks off a process to do the work.  This
104		 * is the parent or errror.
105		 */
106		if (fval > 0) {
107			if (nlp != NULL)
108				metafreenamelist(nlp);
109			return (0);
110		}
111		mdclrerror(ep);
112	}
113
114	assert((fval == 0) || (fval == -1));
115
116	/* resync each raid */
117	for (p = nlp; (p != NULL); p = p->next) {
118		mdname_t	*raidnp = p->namep;
119
120		if (meta_raid_resync(sp, raidnp, size, ep) != 0)
121			rval = -1;
122	}
123
124	/* cleanup, return success */
125	if (nlp != NULL)
126		metafreenamelist(nlp);
127	if (fval == 0)
128		exit(0);
129	return (rval);
130}
131