blob: 8084521a343f84b0b5fa35567a53f70eb0220bd5 (
plain)
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
|
#!/bin/bash
devmapper_name=meep
file=test.ext2
if [ $# -lt 1 ]
then
cat <<EOF
usage: $0 [add [path]|remove]
if <path> is specified, initialise the contents of the hotplugged
device from the directory at <path>
EOF
exit 1
fi
sudo true
set -ex
case "$1"
in
add)
dd if=/dev/zero of=$file bs=1k count=640
mkfs.ext2 -F -m0 $file
loopdev=$(sudo losetup -f --show $loopdev $file)
echo loop device is $loopdev
if [ -d $2 ]
then
mkdir -p mount.tmp
sudo mount $loopdev mount.tmp
sudo rsync -av $2 mount.tmp/
sudo umount mount.tmp
fi
blocksize=$(sudo blockdev --getsize $loopdev)
echo block size = $blocksize
sudo dmsetup create $devmapper_name \
--table "0 $blocksize linear $loopdev 0"
;;
remove)
set +e
awk '/^\/dev\/mapper\/'$devmapper_name'/ {print $2}' \
/proc/mounts |
while read mountpoint
do
sudo umount $mountpoint
done
sudo dmsetup remove $devmapper_name
sudo losetup -j $file | cut -f1 -d: |
while read loopdev
do
sudo losetup -d $loopdev
done
;;
esac
|
