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Using NFS V4 alone, without net-dns/bind
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Goverp
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Joined: 07 Mar 2007
Posts: 2186

PostPosted: Thu Oct 31, 2024 6:30 pm    Post subject: Using NFS V4 alone, without net-dns/bind Reply with quote

I noticed during today's portage update that net-dns/bind-tools is now replaced by net-dns/bind. Digging into this, it turns out that is only needed by NFS versions before V4, so I tried to remove it (as my kernel has only V4 support).
It turns out /etc/conf.d/nfs needs some tweaks to stop trying to start V2/V3 support - the unchanged lines are elided in the listing below:
Code:
# /etc/conf.d/nfs
...
NFS_NEEDED_SERVICES="rpc.idmapd nfsdcld"
# Cancel need for pre-V4 services
rc_need="!rpc.statd !portmap"

# Options to pass to rpc.nfsd - modified to explicitly state port
OPTS_RPC_NFSD="8 -N3 -V4 -p2049"
...
OPTS_RPC_MOUNTD="-N3 -N2 -V4"
...

The basic changes are "-N3" and "-N2" to stop early version support (note, nfsd doesn't understand -V2), the explicit port setting "-p2049", and overriding the need for rpc.statd and portmap, as per this forum topic.

An optional change is needing nfsdcld, a new service that replaces CONFIG_NFSD_LEGACY_CLIENT_TRACKING. That needs a new script /etc/init.d/nfsdcld:
Code:
#!/sbin/openrc-run
# Copyright 2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

name="nfsdcld"
description="NFSv4 Client Tracking Daemon"
command="/usr/sbin/nfsdcld"

pidfile="/run/nfsdcld.pid"
error_logger="logger"
output_logger="logger"  # Comment out usually, but useful for debugging
command_background="true"

which is based on one from this forum topic
There's a bug report about this.

<edit>
Forgot to mention that net-fs/nfs-utils needs USE="-nfsv3" to get remove the dependency on net-dns/bind.
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s|mon
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Joined: 04 Jul 2004
Posts: 219
Location: Bayern [de]

PostPosted: Mon Nov 04, 2024 2:43 pm    Post subject: Reply with quote

Thanks for sharing this, forgot about this aspect when switching to v4 and using nfsdcld.
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