xref: /titanic_41/usr/src/cmd/lvm/util/metaonline.c (revision 29949e866e40b95795203f3ee46f44a197c946e4)
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 2004 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  * online sub-mirrors
31  */
32 
33 #include <meta.h>
34 #include <sdssc.h>
35 
36 /*
37  * print usage message
38  */
39 static void
40 usage(
41 	mdsetname_t	*sp,
42 	int		eval
43 )
44 {
45 	(void) fprintf(stderr, gettext("\
46 usage:	%s [-s setname] mirror submirror\n"),
47 	    myname);
48 	md_exit(sp, eval);
49 }
50 
51 /*
52  * Metaonline: to online a metadevice
53  */
54 int
55 main(
56 	int		argc,
57 	char		*argv[]
58 )
59 {
60 	char		*sname = NULL;
61 	mdsetname_t	*sp = NULL;
62 	mdcmdopts_t	options = (MDCMD_PRINT);
63 	mdname_t	*mirnp;
64 	mdname_t	*submirnp;
65 	int		c;
66 	md_error_t	status = mdnullerror;
67 	md_error_t	*ep = &status;
68 	int		error;
69 	bool_t		called_thru_rpc = FALSE;
70 	char		*cp;
71 	int		origargc = argc;
72 	char		**origargv = argv;
73 
74 	/*
75 	 * Get the locale set up before calling any other routines
76 	 * with messages to ouput.  Just in case we're not in a build
77 	 * environment, make sure that TEXT_DOMAIN gets set to
78 	 * something.
79 	 */
80 #if !defined(TEXT_DOMAIN)
81 #define	TEXT_DOMAIN "SYS_TEST"
82 #endif
83 	(void) setlocale(LC_ALL, "");
84 	(void) textdomain(TEXT_DOMAIN);
85 
86 	if ((cp = strstr(argv[0], ".rpc_call")) == NULL) {
87 		if (sdssc_bind_library() == SDSSC_OKAY)
88 			if (sdssc_cmd_proxy(argc, argv, SDSSC_PROXY_PRIMARY,
89 						&error) == SDSSC_PROXY_DONE)
90 				exit(error);
91 	} else {
92 		*cp = '\0'; /* cut off ".rpc_call" */
93 		called_thru_rpc = TRUE;
94 	}
95 
96 	/* initialize */
97 	if (md_init(argc, argv, 0, 1, ep) != 0 ||
98 			meta_check_root(ep) != 0) {
99 		mde_perror(ep, "");
100 		md_exit(sp, 1);
101 	}
102 
103 	/* parse args */
104 	optind = 1;
105 	opterr = 1;
106 	while ((c = getopt(argc, argv, "hs:?")) != -1) {
107 		switch (c) {
108 		case 'h':
109 			usage(sp, 0);
110 			break;
111 
112 		case 's':
113 			sname = optarg;
114 			break;
115 
116 		case '?':
117 			if (optopt == '?')
118 				usage(sp, 0);
119 			/*FALLTHROUGH*/
120 		default:
121 			usage(sp, 1);
122 			break;
123 		}
124 	}
125 	argc -= optind;
126 	argv += optind;
127 	if (argc != 2)
128 		usage(sp, 1);
129 
130 	if (sname != NULL) {
131 		if ((sp = metasetname(sname, ep)) == NULL) {
132 			mde_perror(ep, "");
133 			md_exit(sp, 1);
134 		}
135 	}
136 
137 	/* get names */
138 	if (((mirnp = metaname(&sp, argv[0], ep)) == NULL) ||
139 	    ((submirnp = metaname(&sp, argv[1], ep)) == NULL)) {
140 		mde_perror(ep, "");
141 		md_exit(sp, 1);
142 	}
143 
144 	assert(sp != NULL);
145 
146 	if ((called_thru_rpc == FALSE) &&
147 	    meta_is_mn_name(&sp, argv[0], ep)) {
148 		/*
149 		 * If we are dealing with a MN set and we were not
150 		 * called thru an rpc call, we are just to send this
151 		 * command string to the master of the set and let it
152 		 * deal with it.
153 		 * Note that if sp is NULL, meta_is_mn_name() derives sp
154 		 * from argv[0] which is the metadevice arg
155 		 * If this fails, the master must panic as the mddb may be
156 		 * inconsistent.
157 		 */
158 		int  result;
159 		result = meta_mn_send_command(sp, origargc, origargv,
160 		    MD_DISP_STDERR | MD_PANIC_WHEN_INCONSISTENT,
161 		    NO_CONTEXT_STRING, ep);
162 		/*
163 		 * Unlike non-MN sets, the metaonline command does not actually
164 		 * start a resync, it simply updates the state on all of the
165 		 * nodes. Therefore, to start a resync we send a resync starting
166 		 * message for the metadevice
167 		 */
168 		if (result == 0) {
169 			if ((result = meta_mn_send_resync_starting(mirnp, ep))
170 			    != 0)
171 				mde_perror(ep, "Unable to start resync");
172 		}
173 		md_exit(sp, result);
174 	}
175 
176 	/* grab set lock */
177 	if (meta_lock(sp, TRUE, ep)) {
178 		mde_perror(ep, "");
179 		md_exit(sp, 1);
180 	}
181 
182 	/* check for ownership */
183 	if (meta_check_ownership(sp, ep) != 0) {
184 		mde_perror(ep, "");
185 		md_exit(sp, 1);
186 	}
187 
188 	/* online submirror */
189 	if (meta_mirror_online(sp, mirnp, submirnp, options, ep) != 0) {
190 		mde_perror(ep, "");
191 		md_exit(sp, 1);
192 	}
193 
194 	/* return success */
195 	md_exit(sp, 0);
196 	/*NOTREACHED*/
197 	return (0);
198 }
199