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In preseed: d-i preseed/early_command string wget http://URL/autopart -P /tmp ; chmod 755 /tmp/autopart ; echo /tmp/autopart installer >> /var/lib/dpkg/info/download-installer.postinst Contents of URL/autopart: #!/bin/sh # # Manually create LVM configuration # # Partman does not currently support multi-disk lvm # # Designed to be run after download-installer but before partman-base # This allows us to modify partman-base.postinst after it's been dropped # in by anna # # Partman appears to be entirely an external program, removing the call # to partman from partman-base.postinst prevents it from running. # -x is useful for debugging set -ex # doesn't work # exec 2>&1 | logger -t autopart case "$1" in installer) # We should have d-i downloaded by now. partman comes in a udeb # from the network so we have to hook here and replace the # partman-base.postinst file anna-install lvm2-udeb sed -i 's/partman/\/tmp\/autopart partman/' \ /var/lib/dpkg/info/partman-base.postinst logger -t autopart modified partman-base.postinst ;; partman) . /usr/share/debconf/confmodule # do filesystem stuff: detect our config, fdisk, lvms, mount /target logger -t autopart Partition configuration starting modprobe dm_mod # Did I ask you to activate exising VGs and LVs? No. So fuck off. /sbin/vgchange -aln --ignorelockingfailure for vg in $(vgdisplay |grep 'VG Name' |sed 's/.*VG Name *//'); do echo y | vgremove $vg done size_sda=`sed -n 's/.* \([0-9]*\) sda$/\1/p' /proc/partitions` size_sdb=`sed -n 's/.* \([0-9]*\) sdb$/\1/p' /proc/partitions` size_hda=`sed -n 's/.* \([0-9]*\) hda$/\1/p' /proc/partitions` size_hdb=`sed -n 's/.* \([0-9]*\) hdb$/\1/p' /proc/partitions` # If we've got SCSI, it's probably used for booting. if [ -n "$size_sda" ]; then boot_device=sda # SCSI needs a delay for LVM to work db_get debian-installer/add-kernel-opts kopt="${RET:+$RET } rootdelay=5" db_set debian-installer/add-kernel-opts "$kopt" else boot_device=hda fi logger -t autopart Boot device is $boot_device if [ -n "$size_sda" ]; then devices="${devices:+$devices }sda" fi if [ -n "$size_sdb" ]; then devices="${devices:+$devices }sdb" fi if [ -n "$size_hda" ]; then devices="${devices:+$devices }hda" fi if [ -n "$size_hdb" ]; then devices="${devices:+$devices }hdb" fi for device in $devices; do # Wipe any existing partition tables. This action is # COMPLETELY, UNAMBIGUOUSLY DESTRUCTIVE. So DON'T DO IT. logger -t autopart Wiping /dev/$device dd if=/dev/zero of=/dev/$device bs=512 count=1 # Create a single partition for lvm. # If device == boot_device, create a partition at the # beginning for /boot if [ $device = $boot_device ]; then cyl=$(sfdisk -g /dev/$device | cut -d\ -f2) eval dev_size=\$size_$device # (Usually?) KB cyl_size=$(($dev_size/$cyl)) sfdisk="${sfdisk:+$sfdisk },$(((128*1024)/$cyl_size)),L,*" pv=/dev/${device}2 else pv=/dev/${device}1 fi logger -t autopart Partitioning /dev/$device sfdisk="${sfdisk:+$sfdisk },,8e" for line in $sfdisk; do echo "$line" done | sfdisk /dev/$device unset sfdisk logger -t autopart Creating PV $pv pvcreate $pv lvm="${lvm:+$lvm }$pv" dev_count=$((${dev_count:-0}+1)) done logger -t autopart Creating VG vgcreate vgsys $lvm # Create and activate swap first. One for each PV. if [ $dev_count -gt 4 ]; then swapsize=128M elif [ $dev_count -gt 2 ]; then swapsize=256M else swapsize=512M fi for device in $lvm; do swap=$((${swap:--1}+1)) logger -t autopart Creating swap sw$swap on $device lvcreate -L $swapsize -n sw$swap -C y vgsys $device mkswap /dev/vgsys/sw$swap swapon /dev/vgsys/sw$swap done unset swap # Then create other core filesystems logger -t autopart Creating LVs lvcreate -L 384M -n root vgsys lvcreate -L 256M -n tmp vgsys lvcreate -L 3G -n usr vgsys lvcreate -L 1.5G -n var vgsys # And format them logger -t autopart Formatting mke2fs -L boot /dev/${boot_device}1 mke2fs -j -L root /dev/vgsys/root mke2fs -L tmp /dev/vgsys/tmp mke2fs -j -L usr /dev/vgsys/usr mke2fs -j -L var /dev/vgsys/var # Create directory structure logger -t autopart Mounting mkdir -p /target mount -t ext3 /dev/vgsys/root /target mkdir -p /target/boot mount -t ext2 /dev/${boot_device}1 /target/boot for mountpoint in tmp usr var; do mkdir -p /target/$mountpoint mount /dev/vgsys/$mountpoint /target/$mountpoint done db_get debian-installer/add-kernel-opts # 'twould be nice to detect exist rootflags and append kopt="${RET:+$RET } rootflags=data=journal" db_set debian-installer/add-kernel-opts "$kopt" # Create fstab logger -t autopart Creating fstab mkdir -p /target/etc ( echo \# /etc/fstab: static file system information. echo \# echo echo proc /proc proc defaults 0 0 echo for device in $lvm; do swap=$((${swap:--1}+1)) echo /dev/vgsys/sw$swap none swap sw,pri=0 0 0 done unset swap echo echo /dev/vgsys/root / ext3 \ defaults,noatime,sync,data=journal,errors=remount-ro 0 1 echo /dev/${boot_device}1 /boot ext2 \ defaults,ro,noatime,nodev,nosuid,sync 0 2 echo /dev/vgsys/tmp /tmp ext2 \ defaults,noatime,nodev,nosuid,errors=continue 0 2 echo /dev/vgsys/usr /usr ext3 \ defaults,ro,noatime,nodev,errors=remount-ro 0 2 echo /dev/vgsys/var /var ext3 \ defaults,noatime,nodev,nosuid,errors=remount-ro 0 2 ) > /target/etc/fstab ;; *) echo $0: This script is destructive and should only be run as echo part of the debian-installer process ;; esac

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