Comment 2 for bug 1489227

No, you did not get my meaning, and maybe your openstack version is not the latest, horizon has disable it in latest version indeed, thanks.

This problem is about that users can type the block devices(e.g. /dev/sd*) to attach to the instance and the instance can map the block devices(e.g. /dev/sd*) with a symlink(e.g. /dev/sd* -> ../../xvd*) in guest, and the horizon dashboard can display this symlink relation to users. This can help users to see which disk in guest was he plugged in dashboard and can discriminate them effectively.

Best Regards,
Sibiao Luo