Here's the script in it's entirety. There are a few things that
could/should be functionalized I think, and it's ugly code. I've not
commented much of anything yet .
It presumes that THIS device layout exists
0.0.0210(ECKD) at ( 94: 0) is dasda : active at blocksize: 4096,
216000 blocks, 843 MB
0.0.0280(ECKD) at ( 94: 4) is dasdb : active at blocksize: 4096,
540000 blocks, 2109 MB
0.0.0201(ECKD) at ( 94: 8) is dasdc : active at blocksize: 4096,
54000 blocks, 210 MB
0.0.0202(ECKD) at ( 94: 12) is dasdd : active at blocksize: 4096,
13500 blocks, 52 MB
0.0.0203(ECKD) at ( 94: 16) is dasde : active at blocksize: 4096,
9000 blocks, 35 MB
0.0.0204(ECKD) at ( 94: 20) is dasdf : active at blocksize: 4096,
49500 blocks, 193 MB
0.0.0205(ECKD) at ( 94: 24) is dasdg : active at blocksize: 4096,
702000 blocks, 2742 MB
0.0.0206(ECKD) at ( 94: 28) is dasdh : active at blocksize: 4096,
61380 blocks, 239 MB
0.0.0207(ECKD) at ( 94: 32) is dasdi : active at blocksize: 4096,
216000 blocks, 843 MB
0.0.0208(ECKD) at ( 94: 36) is dasdj : active at blocksize: 4096,
756000 blocks, 2953 MB
0.0.0209(ECKD) at ( 94: 40) is dasdk : active at blocksize: 4096,
108000 blocks, 421 MB
0.0.0220(ECKD) at ( 94: 44) is dasdl : active at blocksize: 4096,
432000 blocks, 1687 MB
and is going to end up mounted:
/dev/dasdb1 /
/dev/dasdc1 /mnt
/dev/dasdd1 /mnt/boot
/dev/dasde1 /mnt/root
/dev/dasdf1 /mnt/home
/dev/dasdk1 /mnt/var
/dev/dasdi1 /mnt/tmp
/dev/dasda1 /mnt/work
/dev/dasdg1 /mnt/opt
/dev/dasdj1 /mnt/usr
/dev/dasdh1 /mnt/opt/IBM/WebSphere
/dev/dasdl1 swap
Device 280 is the single volume clone and was used for IPL. Device 220
(/dev/dasdl) is the swap volume for the single volume clone and becomes the
swap volume for the multi-HFS result.
The create_system script:
usage: create_system [format|noformat] - noformat will mount the disk on
/mnt without formatting.
fdasd.conf is a file to provide fdasd with automatic information and
contains: [first,last]
the path to this file is set in the second line of the script as partfile.
The actual code:
#!/bin/bash
format=$1
partfile=/etc/fdasd.conf
function get_dasd_dev
{
varname=$1
devicename=$2
devinfo=`cat /proc/dasd/devices | grep $devicename`
rc=$?
if [ $rc != 0 ]; then
echo "Device "$devicename" not in list of available devices Exiting."
exit
else
diskdev=${devinfo:34:5}
rc=$?
if [ $rc != 0 ]; then
echo "Dasd Device name not found for linux device "$2
echo "Unable to set variable "$1." Exiting."
exit
else
export $varname=$diskdev
echo '$varname1' = $varname ${varname:? null}
fi
fi
}
function format_disk
{
targdev=$1
if [ $2 = format ]; then
echo "Formatting disk '"$targdev"' started at "`date`
dasdfmt -y -p -b 4096 -f /dev/$targdev
rc=$?
if [ $rc != 0 ]; then
echo "Error executing dasdfmt for $targdev - failed with "$rc"
Exiting."
exit
fi
echo "Formatting disk "$targdev" completed at "`date`
fdasd -a /dev/$targdev > /dev/null
rc=$?
if [ $rc != 0 ]; then
echo "Error partitioning "$targdev " - fdasd failed with "$rc"
Exiting."
fi
echo "About to make file system on /dev/"$targdev"1"
mkfs.ext3 /dev/$targdev"1" > /dev/null
#mke2fs /dev/$targdev"1" > /dev/null
rc=$?
if [ $rc != 0 ]; then
echo "Error creating ext2 file system on "$1 "- mke2fs failed with
"$rc" - Exiting."
exit
fi
fi
}
function activate_device
{
chccwdev -e 0.0.$1
rc=$?
if [ $rc != 0 ]; then
echo "Error: chccwdev -e 0.0.$1 failed with $rc - exiting"
exit
fi
}
#******************************************************************
#Begin main body of this procedure *
#******************************************************************
#activate devices required by running system
activate_device 0201 ; activate_device 0202
activate_device 0203 ; activate_device 0204
activate_device 0205 ; activate_device 0206
activate_device 0207 ; activate_device 0208
activate_device 0209 ; activate_device 0210
activate_device 0220 ; activate_device 0280
#get dev for unit 0201
get_dasd_dev rootfs 0201
#get dev for unit 0202
get_dasd_dev boot 0202
#get dev for unit 0203
get_dasd_dev root 0203
#get dev for unit 0204
get_dasd_dev home 0204
#get dev for unit 0205
get_dasd_dev opt 0205
#get dev for unit 0206
get_dasd_dev websphere 0206
#get dev for unit 0207
get_dasd_dev tmp 0207
#get dev for unit 0208
get_dasd_dev usr 0208
#get dev for unit 0209
get_dasd_dev var 0209
#get dev for unit 0210
get_dasd_dev work 0210
#get dev for unit 0220
get_dasd_dev swap 0220
#get dev for unit 0280
get_dasd_dev golden 0280
#format and patition disk
format_disk $boot $format # 75 c
format_disk $root $format # 50 c
format_disk $home $format # 275 c
format_disk $rootfs $format # 300 c
format_disk $var $format # 600 c
format_disk $tmp $format # 1200 c
format_disk $work $format # 1200 c
format_disk $opt $format # 3900 c
format_disk $usr $format # 4200 c
# mount root disk on /mnt
mount "/dev/"$rootfs"1" /mnt
#create mount points for remaining file systems
mkdir /mnt/root /mnt/home /mnt/var /mnt/tmp /mnt/work /mnt/opt /mnt/usr
/mnt/boot
#mount remaining disks
mount "/dev/"$boot"1" /mnt/boot ; mount "/dev/"$root"1" /mnt/root ; mount
"/dev/"$home"1" /mnt/home
mount "/dev/"$var"1" /mnt/var ; mount "/dev/"$tmp"1" /mnt/tmp ; mount
"/dev/"$work"1" /mnt/work
mount "/dev/"$opt"1" /mnt/opt ; mount "/dev/"$usr"1" /mnt/usr
#create mountpoint for /opt/IBM/WebSphere
mkdir /mnt/opt/IBM /mnt/opt/IBM/WebSphere
#mount WebSphere device
mount -o ro "/dev/"$websphere"1" /mnt/opt/IBM/WebSphere
df
#begin single disk to multi-disk copy
echo -n "Ready to begin copying single image system to multi-HFS (y/n): "
read ans
if [ $ans != "y" ]; then
exit
fi
# copy single disk fstab to backup.
cp /etc/fstab /etc/fstab_backup
#cat fstab_backup file through sed to change dasda1 mount point for swap to
dasdl1
# and replace original fstab file.
cat fstab_backup | sed -e "s/dasda1/dasdl1/g" > /etc/fstab
#create initial ram disk reflecting new dasd
mkinitrd
#write boot record and pointers for root volume
zipl
echo "copying single disk clone to target dasd"
cd /
#tar -clpSf - . | (cd /mnt ; tar -xpSf - )
tar -clpSf - . | sh -c ' cd /mnt ; exec tar -xpSf - '
echo "Copy complete"
#!/bin/bash
spaces=" x"
devmax=17
mountmax=24
fstypemax=9
attribmax=20
stripval="mnt/"
stripval2="mnt"
repval=""
root="/"
echo "Creating fstab in /mnt/etc"
cp /mnt/etc/fstab /mnt/etc/fstab_bkup
echo "# generated fstab `date` during clone process" > /mnt/etc/fstab
while read Device MountPoint FsType FsOptions junk
do # Process one line using the above variables.
FsOptions="acl,user_xattr"
if [ $MountPoint != "/" ]; then fs_freq_pass="1 2"
else
fs_freq_pass="1 1"
fi
if [ $Device = "devpts" ] ; then
fs_freq_pass="0 0"
FsOptions="mode=0620,gid=5"
fi
if [ $Device = "proc" ] ; then
fs_freq_pass="0 0"
FsOptions="defaults"
fi
if [ $Device = "sysfs" ] ; then
fs_freq_pass="0 0"
FsOptions="noauto"
fi
if [ $Device = "tmpfs" ] ; then
fs_freq_pass="0 0"
FsOptions="rw"
fi
if [ $MountPoint = "/opt/IBM/Websphere" ]; then
FsOptions="ro,acl"
fi
devlength=${#Device}
pad1=${spaces:0:$devmax-$devlength}
fslength=${#FsType}
pad3=${spaces:0:$fstypemax-$fslength}
attriblength=${#FsOptions}
pad4=${spaces:0:$attribmax-$attriblength}
if [ $MountPoint != "/" ]; then
MountPoint=${MountPoint/$stripval/$repval}
if [ $MountPoint = "/mnt" ]; then
MountPoint=${MountPoint/$stripval2/$repval}
fi
mountlength=${#MountPoint}
pad2=${spaces:0:$mountmax-$mountlength}
echo "$Device $pad1 $MountPoint $pad2 $FsType $pad3 $FsOptions $pad4
$fs_freq_pass" >>/mnt/etc/fstab
fi
done < /etc/mtab
rawswap=`swapon -s | grep /dev`
cookedswap=${rawswap:0:11}
Device=$cookedswap
MountPoint=swap
FsType=swap
FsOptions="pri=42"
fs_freq_pass="0 0"
devlength=${#Device}
pad1=${spaces:0:$devmax-$devlength}
mountlength=${#MountPoint}
pad2=${spaces:0:$mountmax-$mountlength}
fslength=${#FsType}
pad3=${spaces:0:$fstypemax-$fslength}
attriblength=${#FsOptions}
pad4=${spaces:0:$attribmax-$attriblength}
echo "$Device $pad1 $MountPoint $pad2 $FsType $pad3 $FsOptions $pad4
$fs_freq_pass" >>/mnt/etc/fstab
echo "Chroot to /mnt and run mkinitrd and zipl!"
echo "Then shutown system and IPL device indicated in zipl output"
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