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
121
122
123
124
125
126
127
128
129
130
131
|
#!/bin/sh
. /usr/share/debconf/confmodule
# Mostly based on mdcfg
create_raid() {
RAID_TYPE="$1"
DEV_COUNT="$2"
if [ "$DEV_COUNT" -lt 3 ] && [ $RAID_TYPE = "5" ] ; then
db_input critical partman-auto-raid/notenoughparts
db_go partman-auto-raid/notenoughparts
exit 9
fi
SPARE_COUNT="$3"
REQUIRED=$(($DEV_COUNT + $SPARE_COUNT))
FS_TYPE="$4"
MOUNTPOINT="$5"
DEVICES="$6"
SPARE_DEVICES="$7"
NAMED_SPARES=$(echo $SPARE_DEVICES | wc -w)
RAID_DEVICES=$(echo $DEVICES | sed -e "s/#/ /g")
SPARE_DEVICES=$(echo $SPARE_DEVICES | sed -e "s/#/ /g")
if [ "$RAID_TYPE" != "0" ]; then
# Count them
SELECTED=$(echo $RAID_DEVICES | wc -w)
MISSING_DEVICES=""
# Add "missing" for as many devices as weren't selected
while [ "$SELECTED" -lt "$DEV_COUNT" ]; do
MISSING_DEVICES="$MISSING_DEVICES missing"
let SELECTED++
done
COUNT=$NAMED_SPARES
MISSING_SPARES=""
while [ "$COUNT" -lt "$SPARE_COUNT" ]; do
MISSING_SPARES="$MISSING_SPARES missing"
let COUNT++
done
fi
# Find the next available md-number
MD_NUM=$(grep ^md /proc/mdstat | sed -e 's/^md\(.*\) : active .*/\1/' | \
sort | tail -n 1)
if [ -z "$MD_NUM" ]; then
MD_NUM=0
else
let MD_NUM++
fi
# If we haven't already stashed the number of the first RAID device
# we used, do so now.
db_get partman-auto-raid/raidnum
if [ -z "$RET" ]; then
db_set partman-auto-raid/raidnum $MD_NUM
fi
echo "Raid devices count: $DEV_COUNT"
if [ "$RAID_TYPE" != "0" ]; then
logger -t partman-auto-raid "Selected spare count: $NAMED_SPARES"
logger -t partman-auto-raid "Spare devices count: $SPARE_COUNT"
MDADM_PARAMS="-x $SPARE_COUNT $RAID_DEVICES $MISSING_DEVICES $SPARE_DEVICES $MISSING_SPARES"
else
MDADM_PARAMS="$RAID_DEVICES"
fi
if ! log-output -t partman-auto-raid \
mdadm --create /dev/md/$MD_NUM --auto=yes --force -R -l raid$RAID_TYPE \
-n $DEV_COUNT $MDADM_PARAMS
then
logger -t partman-auto-raid "Error creating array /dev/md/$MD_NUM"
exit 1
fi
}
# Try to load the necesarry modules.
# Supported schemes: RAID 0, RAID 1, RAID 5
depmod -a 1>/dev/null 2>&1
modprobe md 1>/dev/null 2>&1 || modprobe md-mod 1>/dev/null 2>&1
modprobe raid0 >/dev/null 2>&1
modprobe raid1 1>/dev/null 2>&1
# kernels >=2.6.18 have raid456
modprobe raid456 >/dev/null 2>&1 || modprobe raid5 >/dev/null 2>&1
mkdir -p /dev/md
# Make sure that we have md-support
if [ ! -e /proc/mdstat ]; then
db_set mdcfg/nomd false
db_input critical mdcfg/nomd
db_go
exit 9
fi
# Force mdadm to be installed on the target system
apt-install mdadm || true
# Check we have recipe(s)
db_get partman-auto-raid/recipe
if [ -z "$RET" ]; then
logger -t partman-auto-raid "Error: No recipe specified in partman-auto-raid/recipe"
exit 1
fi
# Try to act on each recipe we were given
recipes=$RET
while [ -n "$recipes" ]; do
tmp=$recipes
recipes=$(echo $tmp | sed -e 's/^[^.]*\.\(.*\)$/\1/');
recipe=$(echo $tmp | sed -e 's/^\([^.]*\)\..*$/\1/');
if [ "$recipe" = "$recipes" ]; then
recipes=''
fi
# Do the recipe!
echo $recipe >/tmp/partman-auto-raid-recipe
read raidtype devcount sparecount fstype mountpoint devs sparedevs \
</tmp/partman-auto-raid-recipe
create_raid $raidtype $devcount $sparecount $fstype $mountpoint \
$devs $sparedevs
done
exit 0
|
