[r27]: / trunk / wharfie / qemu / qwharfie.sh  Maximize  Restore  History

Download this file

71 lines (58 with data), 2.3 kB 

 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
PREFIX=$(dirname $(readlink -f $0))
DISK=${PREFIX}/qwharfie.qcow
INPUT=qwharfie.input.raw
OUTPUT=qwharfie.output.raw
CACHE=qwharfie.cache.qcow
UUID=$(cat ${DISK}.uuid)
INITRD=$(ls -1 ${PREFIX}/boot/initrd* | sort | head -n 1)
KERNEL=$(ls -1 ${PREFIX}/boot/vmlinuz* | sort | head -n 1)
QEMU=$(which qemu-system-x86_64)

QWHARFIE_OUTPUT=1G
QWHARFIE_CACHE=10G

function error()
{
    msg=${1}
    echo "error: ${msg}";
    exit 1;
}

# Check, that all prerequisits are there
[ -z ${DISK} ] && error "No hard drive image defined";
[ -z ${UUID} ] && error "No UUID for HD image found. Has to be a file, named '<img-name>.uuid'.";
[ -z ${INITRD} ] && error "No initial ramdisk found (searched in /boot for initrd*)";
[ -z ${KERNEL} ] && error "No kernel found (searched in /boot for vmlinuz*)";
[ -z ${QEMU} ] && error "No QEMU system emulation found. Install Qemu system emulation for x86_64";

# Generate Makefile
#${PREFIX}/../wharfie.py --gen-only
#cp ${PREFIX}/../wharfie.mk .

# Create input, output and cache images
tar --exclude="${INPUT}" --exclude="${OUTPUT}" --exclude="${CACHE}" -cf ${INPUT} .

if [ ! -f ${OUTPUT} ]; then
    qemu-img create -f raw ${OUTPUT} ${QWHARFIE_OUTPUT}
fi

if [ ! -f ${CACHE} ]; then
    if [ -f ${PREFIX}/${CACHE} ]; then
	cp ${PREFIX}/${CACHE} .
    else
    
	qemu-img create -f raw ${CACHE}.raw ${QWHARFIE_CACHE}
	# create partition table
	(
	    echo o # Create a new empty DOS partition table
	    echo n # Add a new partition
	    echo p # Primary partition
	    echo 1 # Partition number
	    echo   # First sector (Accept default: 1)
	    echo   # Last sector (Accept default: varies)
	    echo w # Write changes
	) | sudo fdisk ${CACHE}.raw &&
	    l=$(sudo /sbin/kpartx -l ${CACHE}.raw | sed -n '/loop/ s,.*/dev/\(loop[0-9]\+\).*,\1, p;q;') &&
	    
	    sudo /sbin/kpartx -as ${CACHE}.raw &&
	    
	    # Create filesystem
	    sudo mkfs.ext3 /dev/mapper/${l}p1 &&
	    sudo /sbin/kpartx -ds ${CACHE}.raw &&
	    qemu-img convert -O qcow2 ${CACHE}.raw ${CACHE}
	rm -f ${CACHE}.raw
    fi
fi

# Run Qemu
${QEMU} -machine accel=kvm -m 512 -hda ${DISK} -hdb ${CACHE} -hdc ${INPUT} -hdd ${OUTPUT} -net nic,model=virtio -net user -kernel ${KERNEL} -initrd ${INITRD}  -append "root=UUID=${UUID} ro single console=ttyS0 fsck.mode=skip systemd.unit=multi-user.target" -nographic

tar -xf ${OUTPUT}