On 2013-10-11 08:44:00 -0600 (-0600), Chris Friesen wrote: > Is there a particular reason why you're overwriting the entire > volume with zeros? > > A simple way to delete the contents of a filesystem would be "rm -rf > /path/to/directory"
You'd like to think that, but many (most?) filesystems only unlink inodes on deletion and leave the data behind in their old blocks to be overwritten by the processes to which they are subsequently reallocated. A user with root-level access to a thick-provisioned block device presented into their virtual machine can still read the old data from it if it hasn't already been overwritten. -- Jeremy Stanley _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
