Re: Recent FreeBSD, NFSv4 and /var/db/mounttab

Claude Buisson wrote:
>Hi,
>
>Last month, I started switching all my systems (stable/9, stable/10,
>stable/11 and current) to NFSv4, and I found that:
>
>   on current (svn 312652) an entry is added to /var/db/mounttab by
>mount_nfs(8), but not suppressed by umount(8). It can be suppressed by
>rpc.umntall(8).
>
>The same anomaly appears on stable/11 after upgrading to svn 312950.
>
>It is relatively easy to trace this anomaly to r308871 on current and
>its MFHs (r309517 for stable/11).
>
>Patching sbin/umount/umount.c to restore the RPC call for NFSv4 makes
>umount(8) suppress the mounttab entry as before.
>
>I do not know what is the proper solution, as suppressing the
>modification of mounttab by mount_nfs(8) for NFSv4 could be an (more
>complicated) alternative !
When I do an NFSv4 mount from a recent FreeBSD system, it does not use the
Mount protocol. I am not sure why your NFSv4 mounts are putting an entry in
mounttab, since that is done by mountd.c on the server and the client isn't even
contacting it?

rick