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Full Discussion: Erase hard disk data
Operating Systems AIX Erase hard disk data Post 302205995 by prichard on Monday 16th of June 2008 06:58:10 PM
Old 06-16-2008
Wiping is fairly easy but if done out of order you can end up having to boot on a maintenance image such as a cd or nim. You MUST wipe the disk(s) containing the rootvg last or not at all. That being said here is the procedure:

lspv and determine the disk(s) with the rootvg. For example:

# lspv

hdisk0 00c7ae3a90d38044 rootvg active
hdisk1 00c7ae3a95f249c6 altinst_rootvg
hdisk2 00c7ae3aa367320b vg00 active
hdisk3 00c7ae3ae5ec7b97 None
hdisk4 0002c6bf97d139ad 1tb1 active
hdisk5 0002c6ff74f6f325 1tb2 active
hdisk6 0002c6ff80e12796 2tb1 active

Now that I know that hdisk0 contains the rootvg I set up a loop like this:

for x in 4 5 6 2 1 3 0 ; do
dd if=/dev/zero of=/dev/rhdisk$x bs=1m
done&

Once done the system will be unbootable.
 

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LVREMOVE(8)						      System Manager's Manual						       LVREMOVE(8)

NAME
lvremove - remove a logical volume SYNOPSIS
lvremove [-A|--autobackup {y|n}] [-d|--debug] [-h|--help] [-t|--test] [-v|--verbose] [--version] [-f|--force] [--noudevsync] LogicalVol- ume{Name|Path} [LogicalVolume{Name|Path}...] DESCRIPTION
lvremove removes one or more logical volumes. Confirmation will be requested before deactivating any active logical volume prior to removal. Logical volumes cannot be deactivated or removed while they are open (e.g. if they contain a mounted filesystem). Removing an origin logical volume will also remove all dependent snapshots. If the logical volume is clustered then it must be deactivated on all nodes in the cluster before it can be removed. A single lvchange com- mand issued from one node can do this. OPTIONS
See lvm(8) for common options. -f, --force Remove active logical volumes without confirmation. --noudevsync Disable udev synchronisation. The process will not wait for notification from udev. It will continue irrespective of any possible udev processing in the background. You should only use this if udev is not running or has rules that ignore the devices LVM2 cre- ates. EXAMPLES
Remove the active logical volume lvol1 in volume group vg00 without asking for confirmation: lvremove -f vg00/lvol1 Remove all logical volumes in volume group vg00: lvremove vg00 SEE ALSO
lvcreate(8), lvdisplay(8), lvchange(8), lvm(8), lvs(8), lvscan(8), vgremove(8) Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) LVREMOVE(8)
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