1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/*
* Copyright (C) 2016 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define N _takeover_noop
#define X _takeover_unsupported
#define lin_r0 _takeover_from_linear_to_raid0
#define lin_r0 _takeover_from_linear_to_raid0
#define lin_r1 _takeover_from_linear_to_raid1
#define lin_r10 _takeover_from_linear_to_raid10
#define lin_r45 _takeover_from_linear_to_raid45
#define mir_r0 _takeover_from_mirrored_to_raid0
#define mir_r0m _takeover_from_mirrored_to_raid0_meta
#define mir_r1 _takeover_from_mirrored_to_raid1
#define mir_r10 _takeover_from_mirrored_to_raid10
#define mir_r45 _takeover_from_mirrored_to_raid45
#define r01_r01 _takeover_from_raid01_to_raid01
#define r01_r10 _takeover_from_raid01_to_raid10
#define r01_str _takeover_from_raid01_to_striped
#define r0__lin _takeover_from_raid0_to_linear
#define r0__mir _takeover_from_raid0_to_mirrored
#define r0m_lin _takeover_from_raid0_meta_to_linear
#define r0m_mir _takeover_from_raid0_meta_to_mirrored
#define r0m_r0 _takeover_from_raid0_meta_to_raid0
#define r0m_r1 _takeover_from_raid0_meta_to_raid1
#define r0m_r10 _takeover_from_raid0_meta_to_raid10
#define r0m_r45 _takeover_from_raid0_meta_to_raid45
#define r0m_r6 _takeover_from_raid0_meta_to_raid6
#define r0m_str _takeover_from_raid0_meta_to_striped
#define r0__r0m _takeover_from_raid0_to_raid0_meta
#define r0__r1 _takeover_from_raid0_to_raid1
#define r0__r10 _takeover_from_raid0_to_raid10
#define r0__r45 _takeover_from_raid0_to_raid45
#define r0__r6 _takeover_from_raid0_to_raid6
#define r0__str _takeover_from_raid0_to_striped
#define r10_lin _takeover_from_raid10_to_linear
#define r10_mir _takeover_from_raid10_to_mirrored
#define r10_r0 _takeover_from_raid10_to_raid0
#define r10_r01 _takeover_from_raid10_to_raid01
#define r10_r0m _takeover_from_raid10_to_raid0_meta
#define r10_r1 _takeover_from_raid10_to_raid1
#define r10_r10 _takeover_from_raid10_to_raid10
#define r10_str _takeover_from_raid10_to_striped
#define r1__lin _takeover_from_raid1_to_linear
#define r1__mir _takeover_from_raid1_to_mirrored
#define r1__r0 _takeover_from_raid1_to_raid0
#define r1__r0m _takeover_from_raid1_to_raid0_meta
#define r1__r1 _takeover_from_raid1_to_raid1
#define r1__r10 _takeover_from_raid1_to_raid10
#define r1__r5 _takeover_from_raid1_to_raid5
#define r1__str _takeover_from_raid1_to_striped
#define r45_lin _takeover_from_raid45_to_linear
#define r45_mir _takeover_from_raid45_to_mirrored
#define r45_r0 _takeover_from_raid45_to_raid0
#define r45_r0m _takeover_from_raid45_to_raid0_meta
#define r5_r1 _takeover_from_raid5_to_raid1
#define r45_r54 _takeover_from_raid45_to_raid54
#define r45_r6 _takeover_from_raid45_to_raid6
#define r45_str _takeover_from_raid45_to_striped
#define r6__r0 _takeover_from_raid6_to_raid0
#define r6__r0m _takeover_from_raid6_to_raid0_meta
#define r6__r45 _takeover_from_raid6_to_raid45
#define r6__str _takeover_from_raid6_to_striped
#define str_r0 _takeover_from_striped_to_raid0
#define str_r01 _takeover_from_striped_to_raid01
#define str_r0m _takeover_from_striped_to_raid0_meta
#define str_r10 _takeover_from_striped_to_raid10
#define str_r45 _takeover_from_striped_to_raid45
#define str_r6 _takeover_from_striped_to_raid6
static uint64_t _segtype_index[] = {
1, /* linear */
1, /* striped */
SEG_MIRROR,
SEG_RAID0,
SEG_RAID0_META,
SEG_RAID1,
SEG_RAID4 | SEG_RAID5_LS | SEG_RAID5_LA | SEG_RAID5_LS | SEG_RAID5_RS | SEG_RAID5_RA | SEG_RAID5_N,
SEG_RAID6_LS_6 | SEG_RAID6_LA_6 | SEG_RAID6_RS_6 | SEG_RAID6_RA_6 | SEG_RAID6_NC | SEG_RAID6_NR | SEG_RAID6_ZR | SEG_RAID6_N_6,
0, // SEG_RAID10_NEAR | SEG_RAID10_FAR | SEG_RAID10_OFFSET,
0, // SEG_RAID01,
0
};
/*
* Matrix of takeover functions.
* Row corresponds to original segment type.
* Column corresponds to new segment type.
* N represents a combination that has no effect (no-op).
* X represents a combination that is unsupported.
*/
static takeover_fn_t _takeover_fns[][11] = {
/* from, to -> linear striped mirror raid0 raid0_meta raid1 raid4/5 raid6 raid10 raid01 other*/
/* | */
/* v */
/* linear */ { N , X , X , lin_r0, lin_r0 , lin_r1, lin_r45, X , lin_r10, X , X },
/* striped */ { X , N , X , str_r0, str_r0m, lin_r1, str_r45, str_r6, str_r10, str_r01, X },
/* mirror */ { X , X , N , mir_r0, mir_r0m, mir_r1, mir_r45, X , mir_r10, X , X },
/* raid0 */ { r0__lin, r0__str, r0__mir, N , r0__r0m, r0__r1, r0__r45, r0__r6, r0__r10, X , X },
/* raid0_meta */ { r0m_lin, r0m_str, r0m_mir, r0m_r0, N , r0m_r1, r0m_r45, r0m_r6, r0m_r10, X , X },
/* raid1 */ { r1__lin, r1__str, r1__mir, r1__r0, r1__r0m, r1__r1, r1__r5, X , r1__r10, X , X },
/* raid4/5 */ { r45_lin, r45_str, r45_mir, r45_r0, r45_r0m, r5_r1 , r45_r54, r45_r6, X , X , X },
/* raid6 */ { X , r6__str, X , r6__r0, r6__r0m, X , r6__r45, X , X , X , X },
/* raid10 */ { r10_lin, r10_str, r10_mir, r10_r0, r10_r0m, r10_r1, X , X , X , X , X },
/* raid01 */ // { X , r01_str, X , X , X , X , X , X , r01_r10, r01_r01, X },
/* other */ { X , X , X , X , X , X , X , X , X , X , X },
};
#undef X
#undef N
|
