cdrom.image/updates/raidconvert

#!/bin/sh
set -x

# exec 2>&1 >/tmp/raidconvert.out

exec 2>&1 

# let's assume it's a SCSI system
if grep -q 'sda$' /proc/partitions; then
    disk=sda
else
    # No SCSI Drives is must be IDE
    media=`cat /proc/ide/hda/media`
    if [ $media == "disk" ] ; then
        disk=hda
    fi
fi

set $disk
found=`echo $#`
if [ $found -gt "0" ] ; then
    # Dump out current partitions
    sfdisk -d /dev/$disk > /tmp/oldparts

    # Check if we have any ext2/3 or swap partitions
    if grep -q 'Id=8[23]' /tmp/oldparts; then
        echo -en "\n\nConverting partitions to RAID..." >/dev/tty3
        # Convert ext2/3 and swap partitions to raid autodetect
        sed 's/Id=8[32]/Id=fd/' /tmp/oldparts > /tmp/newparts

        # Find swap partition for future checks
        swap=`grep 'Id=82' /tmp/oldparts | sed "s/$disk\([0-9]\+\) :.*/md\1/"`

        # Loop throught partitions and convert to degraded raid1
        for part in `grep 'Id=8[23]' /tmp/oldparts | sed 's/ :.*//'`; do
            mdpart=`echo $part | sed "s/$disk\([0-9]\+\)/md\1/"`
        
            echo -n "$part..." >/dev/tty3
            mdadm --create $mdpart --run --level=1 --raid-devices=2 $part missing
            if [ "$mdpart" == "$swap" ]; then
                # Recreate swap partition
                mkswap $swap
            else
                # Resize ext2/3 partitions (fix superblock - part 1)
                resize2fs -f $mdpart
            fi
        done

        echo "done" >/dev/tty3

        # Write out new converted partition table
        sfdisk --force /dev/$disk < /tmp/newparts

        echo -e "\nChecking filesystems on converted partitions. This may take a while." >/dev/tty3

        mkdir /mnt/tmp
        for part in `grep 'Id=fd' /tmp/newparts | sed "s/$disk\([0-9]\+\) :.*/md\1/"`; do
            if [ "$part" != "$swap" ]; then
                # Resize ext2/3 partitions (fix superblock - part 2)
                echo -e "\n\nChecking $part..." >/dev/tty3
                e2fsck -f -C0 $part >/dev/tty3

                # Check for /etc/fstab on partitions and convert entries
                mount $part /mnt/tmp
                if [ -r /mnt/tmp/etc/fstab ]; then
                    # XXX - FIXME - unportable hack for fstab. 
                    # Only works for 6.x I suspect
                    cat /mnt/tmp/etc/fstab | sed "s/$disk\([0-9]\+\)/md\1/" | \
                        sed -e "s:LABEL=/boot1:/dev/md1:" | \
                        sed -e "s:LABEL=/:/dev/md3:" \
                        > /mnt/tmp/etc/fstab.tmp
                    mv /mnt/tmp/etc/fstab.tmp /mnt/tmp/etc/fstab
                fi
                umount /mnt/tmp
            fi
        done
        rmdir /mnt/tmp
        mdadm --stop --scan     
    fi
fi
1	#!/bin/sh
2	set -x
3
4	# exec 2>&1 >/tmp/raidconvert.out
5
6	exec 2>&1
7
8	# let's assume it's a SCSI system
9	if grep -q 'sda$' /proc/partitions; then
10	disk=sda
11	else
12	# No SCSI Drives is must be IDE
13	media=`cat /proc/ide/hda/media`
14	if [ $media == "disk" ] ; then
15	disk=hda
16	fi
17	fi
18
19	set $disk
20	found=`echo $#`
21	if [ $found -gt "0" ] ; then
22	# Dump out current partitions
23	sfdisk -d /dev/$disk > /tmp/oldparts
24
25	# Check if we have any ext2/3 or swap partitions
26	if grep -q 'Id=8[23]' /tmp/oldparts; then
27	echo -en "\n\nConverting partitions to RAID..." >/dev/tty3
28	# Convert ext2/3 and swap partitions to raid autodetect
29	sed 's/Id=8[32]/Id=fd/' /tmp/oldparts > /tmp/newparts
30
31	# Find swap partition for future checks
32	swap=`grep 'Id=82' /tmp/oldparts \| sed "s/$disk\([0-9]\+\) :.*/md\1/"`
33
34	# Loop throught partitions and convert to degraded raid1
35	for part in `grep 'Id=8[23]' /tmp/oldparts \| sed 's/ :.*//'`; do
36	mdpart=`echo $part \| sed "s/$disk\([0-9]\+\)/md\1/"`
37
38	echo -n "$part..." >/dev/tty3
39	mdadm --create $mdpart --run --level=1 --raid-devices=2 $part missing
40	if [ "$mdpart" == "$swap" ]; then
41	# Recreate swap partition
42	mkswap $swap
43	else
44	# Resize ext2/3 partitions (fix superblock - part 1)
45	resize2fs -f $mdpart
46	fi
47	done
48
49	echo "done" >/dev/tty3
50
51	# Write out new converted partition table
52	sfdisk --force /dev/$disk < /tmp/newparts
53
54	echo -e "\nChecking filesystems on converted partitions. This may take a while." >/dev/tty3
55
56	mkdir /mnt/tmp
57	for part in `grep 'Id=fd' /tmp/newparts \| sed "s/$disk\([0-9]\+\) :.*/md\1/"`; do
58	if [ "$part" != "$swap" ]; then
59	# Resize ext2/3 partitions (fix superblock - part 2)
60	echo -e "\n\nChecking $part..." >/dev/tty3
61	e2fsck -f -C0 $part >/dev/tty3
62
63	# Check for /etc/fstab on partitions and convert entries
64	mount $part /mnt/tmp
65	if [ -r /mnt/tmp/etc/fstab ]; then
66	# XXX - FIXME - unportable hack for fstab.
67	# Only works for 6.x I suspect
68	cat /mnt/tmp/etc/fstab \| sed "s/$disk\([0-9]\+\)/md\1/" \| \
69	sed -e "s:LABEL=/boot1:/dev/md1:" \| \
70	sed -e "s:LABEL=/:/dev/md3:" \
71	> /mnt/tmp/etc/fstab.tmp
72	mv /mnt/tmp/etc/fstab.tmp /mnt/tmp/etc/fstab
73	fi
74	umount /mnt/tmp
75	fi
76	done
77	rmdir /mnt/tmp
78	mdadm --stop --scan
79	fi
80	fi