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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" | |
31 | #include "md_p.h" | |
32 | #include "md_u.h" | |
33 | ||
34 | int Detail(char *dev) | |
35 | { | |
36 | /* | |
37 | * Print out details for an md array by using | |
38 | * GET_ARRAY_INFO and GET_DISK_INFO ioctl calls | |
39 | */ | |
40 | ||
41 | int fd = open(dev, O_RDONLY, 0); | |
42 | int vers; | |
43 | mdu_array_info_t array; | |
44 | int d; | |
45 | time_t atime; | |
682c7051 | 46 | char *c; |
64c4757e | 47 | |
82b27616 NB |
48 | mdp_super_t super; |
49 | int have_super = 0; | |
50 | ||
64c4757e | 51 | if (fd < 0) { |
682c7051 | 52 | fprintf(stderr, Name ": cannot open %s: %s\n", |
64c4757e NB |
53 | dev, strerror(errno)); |
54 | return 1; | |
55 | } | |
56 | vers = md_get_version(fd); | |
57 | if (vers < 0) { | |
682c7051 | 58 | fprintf(stderr, Name ": %s does not appear to be an md device\n", |
64c4757e NB |
59 | dev); |
60 | close(fd); | |
61 | return 1; | |
62 | } | |
682c7051 NB |
63 | if (vers < 9000) { |
64 | fprintf(stderr, Name ": cannot get detail for md device %s: driver version too old.\n", | |
64c4757e NB |
65 | dev); |
66 | close(fd); | |
67 | return 1; | |
68 | } | |
69 | if (ioctl(fd, GET_ARRAY_INFO, &array)<0) { | |
70 | if (errno == ENODEV) | |
682c7051 | 71 | fprintf(stderr, Name ": md device %s does not appear to be active.\n", |
64c4757e NB |
72 | dev); |
73 | else | |
682c7051 | 74 | fprintf(stderr, Name ": cannot get array detail for %s: %s\n", |
64c4757e NB |
75 | dev, strerror(errno)); |
76 | close(fd); | |
77 | return 1; | |
78 | } | |
79 | /* Ok, we have some info to print... */ | |
80 | printf("%s:\n", dev); | |
81 | printf(" Version : %02d.%02d.%02d\n", | |
82 | array.major_version, array.minor_version, array.patch_version); | |
83 | atime = array.ctime; | |
84 | printf(" Creation Time : %.24s\n", ctime(&atime)); | |
682c7051 NB |
85 | c = map_num(pers, array.level); |
86 | printf(" Raid Level : %s\n", c?c:"-unknown-"); | |
64c4757e NB |
87 | printf(" Size : %d\n", array.size); |
88 | printf(" Raid Disks : %d\n", array.raid_disks); | |
89 | printf(" Total Disks : %d\n", array.nr_disks); | |
90 | printf("Preferred Minor : %d\n", array.md_minor); | |
91 | printf(" Persistance : Superblock is %spersistant\n", | |
92 | array.not_persistent?"not ":""); | |
93 | printf("\n"); | |
94 | atime = array.utime; | |
95 | printf(" Update Time : %.24s\n", ctime(&atime)); | |
96 | printf(" State : %s, %serrors\n", | |
97 | (array.state&(1<<MD_SB_CLEAN))?"clean":"dirty", | |
98 | (array.state&(1<<MD_SB_ERRORS))?"":"no-"); | |
99 | printf(" Active Drives : %d\n", array.active_disks); | |
100 | printf(" Working Drives : %d\n", array.working_disks); | |
101 | printf(" Failed Drives : %d\n", array.failed_disks); | |
102 | printf(" Spare Drives : %d\n", array.spare_disks); | |
103 | printf("\n"); | |
682c7051 NB |
104 | if (array.level == 5) { |
105 | c = map_num(r5layout, array.layout); | |
106 | printf(" Layout : %s\n", c?c:"-unknown-"); | |
107 | } | |
82b27616 NB |
108 | switch (array.level) { |
109 | case 0: | |
110 | case 4: | |
111 | case 5: | |
112 | printf(" Chunk Size : %dK\n", array.chunk_size/1024); | |
113 | break; | |
114 | case -1: | |
115 | printf(" Rounding : %dK\n", array.chunk_size/1024); | |
116 | break; | |
117 | default: break; | |
118 | } | |
119 | ||
64c4757e NB |
120 | printf("\n"); |
121 | printf(" Number Major Minor RaidDisk State\n"); | |
122 | for (d= 0; d<array.nr_disks; d++) { | |
123 | mdu_disk_info_t disk; | |
82b27616 | 124 | char *dv; |
64c4757e NB |
125 | disk.number = d; |
126 | if (ioctl(fd, GET_DISK_INFO, &disk) < 0) { | |
682c7051 | 127 | fprintf(stderr, Name ": cannot get disk detail for disk %d: %s\n", |
64c4757e NB |
128 | d, strerror(errno)); |
129 | continue; | |
130 | } | |
131 | printf(" %5d %5d %5d %5d ", | |
132 | disk.number, disk.major, disk.minor, disk.raid_disk); | |
133 | if (disk.state & (1<<MD_DISK_FAULTY)) printf(" faulty"); | |
134 | if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active"); | |
135 | if (disk.state & (1<<MD_DISK_SYNC)) printf(" sync"); | |
136 | if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed"); | |
82b27616 NB |
137 | if ((dv=map_dev(disk.major, disk.minor))) { |
138 | printf(" %s", dv); | |
139 | if (!have_super) { | |
140 | /* try to read the superblock from this device | |
141 | * to get more info | |
142 | */ | |
143 | int fd = open(dv, O_RDONLY); | |
144 | if (fd >=0 && | |
145 | load_super(fd, &super) ==0 && | |
146 | super.ctime == array.ctime && | |
147 | super.level == array.level) | |
148 | have_super = 1; | |
149 | } | |
150 | } | |
64c4757e NB |
151 | printf("\n"); |
152 | } | |
82b27616 NB |
153 | if (have_super) { |
154 | if (super.minor_version >= 90) | |
155 | printf(" UUID : %08x:%08x:%08x:%08x\n", super.set_uuid0, super.set_uuid1, | |
156 | super.set_uuid2, super.set_uuid3); | |
157 | else | |
158 | printf(" UUID : %08x\n", super.set_uuid0); | |
159 | } | |
64c4757e NB |
160 | return 0; |
161 | } |