Red Hat Bugzilla – Bug 146054
clearpart should delete ext3 (and other) meta data from existing partitions
Last modified: 2007-11-30 17:10:59 EST
Description of problem:
In a classroom or lab environment when multiple installs are being
performed on a machine, anaconda and clearpart don't clear enough.
In a FC3 test lab, we are seeing freshly kickstarted machines having
ext3 labels such as "/boot1", "/var/1", and "/usr1".
The kickstart lines we are using are as follows:
clearpart --all --initlabel
part /boot --fstype ext3 --ondisk=hda --size 100
part / --fstype ext3 --ondisk=hda --size 2060
part swap --ondisk=hda --size 512
part /usr --fstype ext3 --ondisk=hda --size 7925
part /tmp --fstype ext3 --ondisk=hda --size 300
part /var --fstype ext3 --ondisk=hda --size 500
In a related issue, when we create software RAID or LVM using the
exact same commands on the fresh install as were used during the
previous install we get a bunch of complaints from the raidtools/mdadm
and lvm tools about "existing" volumes, etc.
This is very common in a classroom environment.
Either by default, or with an additional switch to clearpart have it
zero out (dd if=/dev/zero ...) the first one megabyte of each
pre-existing partition before it blows away the table and creates a
Thanks for your consideration.
Maybe we should try to use parted's clobber stuff...
I don't have any insight on the way it should be implemented properly.
Here is our current workaround:
for i in `(fdisk -l /dev/hda ; fdisk -l /dev/sda) | grep -v Ext | egrep
'^/dev/.da[0-9]*' | sed 's/ .*//' | sort -r`; do dd if=/dev/zero of=$i count=1
This sounds similar to bug #145732 ...
clobber doesn't look all that helpful. I'll look into implementing our own
stuff in anaconda for wiping out labels and other identifying filesystem
We have clobbering now