Ian Jackson writes ("Re: Bug#953183: Acknowledgement (Default for --wipe or
--zero does not seem as documented)"):
> This just happened to me:
>
> 2020-03-05 16:16:43 Z executing ssh ... [email protected] lvcreate -Z y -W y
> -L 10000M -n debian.buster.guest.osstest-disk elbling0-vg
> WARNING: dos signature detected on
> /dev/elbling0-vg/debian.buster.guest.osstest-disk at offset 510. Wipe
> it? [y/n]:
>
> So -Z y -W y is not effective.
For now I am passing --yes. This is in a test environment so I'm not
risking much. But in general I hope that lvcreate doesn't do anything
really dangerous even with --yes.
2020-03-05 16:32:28 Z executing ssh ... [email protected] lvcreate --yes -Z y
-W y -L 10000M -n debian.buster.guest.osstest-disk elbling0-vg
Wiping dos signature on /dev/elbling0-vg/debian.buster.guest.osstest-disk.
Logical volume "debian.buster.guest.osstest-disk" created.
Ian.