On Tue, 21 May 2013, Bill Nottingham wrote:
Matthew Miller (mattdm@xxxxxxxxxxxxxxxxx) said:
2) I also commented out the "Zeroing out empty space" postinstall stuff, because it drastically increases the image build time for not much benefit, IMHO.
One time image build cost vs. whatever benefit multipled by every time the image is used. :)
To put some numbers behind it, the compressed qcow2 image with the dd to zero empty space is 215M out of appliance-creator. Without it, it's 242M.
post install is the wrong place, agreed. Pre-build of an image is not
There are privacy implications in not blanking a VM image. In some LVM setups, one may pick up a previous image's slack space still containing live data. A cautious provider does not provide an image with anything worth trolling (trawling <?>) through
Matt, What timing is seen running (pre install): shred -n 0 -z /path/to/image compared to that 'dd' approach quoted? -- Russ herrold _______________________________________________ cloud mailing list cloud@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/cloud
