Hi,
just a follow-up to my posting last night.
I tried Mathieu Alorent's patch for setup-storage/Command.pm, but
it resulted in a similar "Cannot satisfy pre-depends" error.
As a workaround, in order to be able to re-install a system with MD RAID
and LVM, I wrote a small hook script named partition.WIPEDISKS (see
attachment) in which I basically destroy the LVM, MD RAID setups and
wipe the boot sector of the hard drives.
Using this script I am able to reinstall such a system. However,
the price is that I cannot preserve any partition, ie all the nice
preserve_xxx=device options won't work. For an LVM based parition setup
I'd expect the system to re-format all partitions which are not marked
to be preserved when task_partition (setup-storage) is run while those
marked to be preserved are left untouched. This would be useful for doing
a clean reinstallation of the system while data partitions are preserved.
Would be great if this behaviour could be available for this use case
(MD RAID+LVM) as well.
Thanks,
w.w.
#!/bin/bash
#
# hooks/partition.WIPEDISKS
#
# author : W. Walkowiak, 2013-01-03
# changed:
#
# Stop LVM an MD RAIDs if existing and wipe all disks with wipefs and dd
#
# $Id: $
#===========================================================================
error=0; trap 'error=$(($?>$error?$?:$error))' ERR # save maximum error code
#--- functions
#----
# stop volume groups
echo "Stopping VGs:"
vgs
vgchange -an $vg
# stop MD RAID arrays
echo "Stopping and removing MD RAID arrays:"
mdadm --detail --scan
for array in $(mdadm --detail --scan | cut -d ' ' -f 2 | xargs readlink -f )
do
parts=$(mdadm --detail $array | grep '/dev/' | grep -oE "[^ :]+$")
mdadm --stop $array
[ -x $array ] && mdadm --remove $array
for part in $parts; do
echo "zeroing $part"
mdadm --zero-superblock $part
done
done
rm -f /etc/mdadm/mdadm.conf
# wipe all disks with wipefs and dd
if [ -n "$disklist" ]; then
echo "Wiping boot sector of disks: $disklist"
for disk in $disklist; do
wipefs -a /dev/$disk
dd if=/dev/zero of=/dev/$disk bs=512 count=1
done
fi
exit $error
