<div dir="ltr"><div><div><div><div><div>Hi,<br><br></div>We would like to experiment and see the performance results with different options of dm-crypt. To do this we would like to setup /dev/zero with dm-crypt as mentioned in <a href="https://www.redhat.com/archives/dm-devel/2015-February/msg00106.html">https://www.redhat.com/archives/dm-devel/2015-February/msg00106.html</a><br></div>However, when I did the following no new mapping gets created in /dev/mapper:<br><br># cryptsetup -y luksFormat /dev/zero<br># cryptsetup luksOpen /dev/zero dm-zero<br># cryptsetup status /dev/mapper/dm-zero<br>/dev/mapper/dm-zero is inactive.<br><br></div>Could you please help by giving instructions on how to do this right?<br><br></div>Thank you.<br><br></div>Ravi<br> </div>