vipw: could not lock the passwd file: : Operation not supported

[Valerio Daelli]

Yes, I am root. The problem is that some tools like vipw and pam utilities 
want
to get a flock on some files, like /etc/passwd. If they can't (because of 
plain NFS) they complain.
I've been suggested to try with rpc.lockd.
Thanks for your help!

Valerio Daelli

>It sounds like your not logged in as root, I'm sure you are but I have
>never played with jails. Have you tried the adduser or pw commands?,
>vipw is not the best tool for adding users because you can fsck your
>system if your not careful.