>      I have some experience with initramfs, and I have already tested 
> vdev with Busybox in initramfs a while ago. But have no experience in 
> generating a Debian/Devuan initramfs. Here's my experience with 
> vdev+busybox:

>      There was two problems:
>      1) Busybox's blkid doesn't accept any option. Formatting options 
> are no problem because vdev manages to not use them, but the -p
> option is definitely missing. To be able to fully test vdev, I had to
> build the legacy blkid from util-linux.
>      2) At the time of this test campaign, the shebang line of vdev 
> scripts was #!/bin/dash, which doesn't work in Busybox. It should be 
> replaced by #!/bin/sh which works in all cases.

>      With the conditions described above, ie busybox, vdev, blkid
> (all linked statically against Musl libc) and modified shebang lines,
> the startup was working without error when booting from a USB key on
> my amd64 laptop.

>      I guess in Devuan/Debian, Busybox is dynamicaly linked against 
> glibc; therefore adding blkid wouldn't dramatically increase the
> bloat.

>      Didier