]>
Commit | Line | Data |
---|---|---|
64c4757e NB |
1 | /* |
2 | * mdctl - manage Linux "md" devices aka RAID arrays. | |
3 | * | |
4 | * Copyright (C) 2001 Neil Brown <neilb@cse.unsw.edu.au> | |
5 | * | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | * | |
21 | * Author: Neil Brown | |
22 | * Email: <neilb@cse.unsw.edu.au> | |
23 | * Paper: Neil Brown | |
24 | * School of Computer Science and Engineering | |
25 | * The University of New South Wales | |
26 | * Sydney, 2052 | |
27 | * Australia | |
28 | */ | |
29 | ||
30 | #include "mdctl.h" | |
682c7051 NB |
31 | #include "md_u.h" |
32 | #include "md_p.h" | |
64c4757e NB |
33 | |
34 | int Manage_ro(char *devname, int fd, int readonly) | |
35 | { | |
682c7051 NB |
36 | /* switch to readonly or rw |
37 | * | |
38 | * requires >= 0.90.0 | |
39 | * first check that array is runing | |
40 | * use RESTART_ARRAY_RW or STOP_ARRAY_RO | |
41 | * | |
42 | */ | |
43 | mdu_array_info_t array; | |
44 | ||
45 | if (md_get_version(fd) < 9000) { | |
46 | fprintf(stderr, Name ": need md driver version 0.90.0 or later\n"); | |
47 | return 1; | |
48 | } | |
49 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
50 | fprintf(stderr, Name ": %s does not appear to be active.\n", | |
51 | devname); | |
52 | return 1; | |
53 | } | |
54 | ||
55 | if (readonly>0) { | |
56 | if (ioctl(fd, STOP_ARRAY_RO, NULL)) { | |
57 | fprintf(stderr, Name ": failed to set readonly for %s: %s\n", | |
58 | devname, strerror(errno)); | |
59 | return 1; | |
60 | } | |
61 | } else if (readonly < 0) { | |
62 | if (ioctl(fd, RESTART_ARRAY_RW, NULL)) { | |
63 | fprintf(stderr, Name ": fail to re writable for %s: %s\n", | |
64 | devname, strerror(errno)); | |
65 | return 1; | |
66 | } | |
67 | } | |
68 | return 0; | |
64c4757e NB |
69 | } |
70 | ||
71 | int Manage_runstop(char *devname, int fd, int runstop) | |
72 | { | |
682c7051 NB |
73 | /* Run or stop the array. array must already be configured |
74 | * required >= 0.90.0 | |
75 | */ | |
76 | mdu_array_info_t array; | |
77 | mdu_param_t param; /* unused */ | |
78 | ||
79 | if (md_get_version(fd) < 9000) { | |
80 | fprintf(stderr, Name ": need md driver version 0.90.0 or later\n"); | |
81 | return 1; | |
82 | } | |
83 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
84 | fprintf(stderr, Name ": %s does not appear to be active.\n", | |
85 | devname); | |
86 | return 1; | |
87 | } | |
88 | ||
89 | if (runstop>0) { | |
90 | if (ioctl(fd, RUN_ARRAY, ¶m)) { | |
91 | fprintf(stderr, Name ": failed to run array %s: %s\n", | |
92 | devname, strerror(errno)); | |
93 | return 1; | |
94 | } | |
95 | } else if (runstop < 0){ | |
96 | if (ioctl(fd, STOP_ARRAY, NULL)) { | |
97 | fprintf(stderr, Name ": fail to re writable for %s: %s\n", | |
98 | devname, strerror(errno)); | |
99 | return 1; | |
100 | } | |
101 | } | |
102 | return 0; | |
64c4757e NB |
103 | } |
104 | ||
105 | int Manage_subdevs(char *devname, int fd, | |
106 | int devcnt, char *devnames[], int devmodes[]) | |
682c7051 NB |
107 | { |
108 | /* do something to each dev. | |
109 | * devmode can be | |
110 | * 'a' - add the device | |
111 | * try HOT_ADD_DISK | |
112 | * If that fails EINVAL, try ADD_NEW_DISK | |
113 | * 'r' - remove the device HOT_REMOVE_DISK | |
114 | * 'f' - set the device faulty SET_DISK_FAULTY | |
115 | */ | |
116 | mdu_array_info_t array; | |
117 | mdu_disk_info_t disc; | |
118 | struct stat stb; | |
119 | int i,j; | |
120 | ||
121 | if (ioctl(fd, GET_ARRAY_INFO, &array)) { | |
122 | fprintf(stderr, Name ": cannot get array info for %s\n", | |
123 | devname); | |
124 | return 1; | |
125 | } | |
126 | for (i=0 ; i<devcnt; i++) { | |
127 | if (stat(devnames[i], &stb)) { | |
128 | fprintf(stderr, Name ": cannot find %s: %s\n", | |
129 | devnames[i], strerror(errno)); | |
130 | return 1; | |
131 | } | |
132 | if ((stb.st_mode & S_IFMT) != S_IFBLK) { | |
133 | fprintf(stderr, Name ": %s is not a block device.\n", | |
134 | devnames[i]); | |
135 | return 1; | |
136 | } | |
137 | switch(devmodes[i]){ | |
138 | default: | |
139 | fprintf(stderr, Name ": internal error - devmode[%d]=%d\n", | |
140 | i, devmodes[i]); | |
141 | return 1; | |
142 | case 'a': | |
143 | /* add the device - hot or cold */ | |
144 | if (ioctl(fd, HOT_ADD_DISK, stb.st_rdev)==0) { | |
145 | fprintf(stderr, Name ": hot added %s\n", | |
146 | devnames[i]); | |
147 | continue; | |
148 | } | |
149 | /* try ADD_NEW_DISK. | |
150 | * we might be creating, we might be assembling, | |
151 | * it is hard to tell. | |
152 | * set up number/raid_disk/state just | |
153 | * in case | |
154 | */ | |
155 | for (j=0; j<array.nr_disks; j++) { | |
156 | if (ioctl(fd, GET_DISK_INFO, &disc)) | |
157 | break; | |
158 | if (disc.major==0 && disc.minor==0) | |
159 | break; | |
160 | if (disc.state & 8) /* removed */ | |
161 | break; | |
162 | } | |
163 | disc.number =j; | |
164 | disc.raid_disk = j; | |
165 | disc.state = 0; | |
166 | disc.major = MAJOR(stb.st_rdev); | |
167 | disc.minor = MINOR(stb.st_rdev); | |
168 | if (ioctl(fd,ADD_NEW_DISK, &disc)) { | |
169 | fprintf(stderr, Name ": add new disk failed for %s: %s\n", | |
170 | devnames[i], strerror(errno)); | |
171 | return 1; | |
172 | } | |
173 | fprintf(stderr, Name ": added %s\n", devnames[i]); | |
174 | break; | |
175 | ||
176 | case 'r': | |
177 | /* hot remove */ | |
178 | /* FIXME check that is is a current member */ | |
179 | if (ioctl(fd, HOT_REMOVE_DISK, stb.st_rdev)) { | |
180 | fprintf(stderr, Name ": hot remove failed for %s: %s\n", | |
181 | devnames[i], strerror(errno)); | |
182 | return 1; | |
183 | } | |
184 | fprintf(stderr, Name ": hot removed %s\n", devnames[i]); | |
185 | break; | |
186 | ||
187 | case 'f': /* set faulty */ | |
188 | /* FIXME check current member */ | |
189 | if (ioctl(fd, SET_DISK_FAULTY, stb.st_rdev)) { | |
190 | fprintf(stderr, Name ": set disk faulty failed for %s: %s\n", | |
191 | devnames[i], strerror(errno)); | |
192 | return 1; | |
193 | } | |
194 | fprintf(stderr, Name ": set %s faulty in %s\n", | |
195 | devnames[i], devname); | |
196 | break; | |
197 | } | |
198 | } | |
199 | return 0; | |
200 | ||
64c4757e | 201 | } |