Public bug reported:
The tl;dr: version:
An RPCNFSARGS variable needs to be added to /etc/default/nfs-kernel-
server file in order to facilitate turning off NFSv3, so that the
rpcbind dependency goes away. Otherwise the user is forced to snoop
through all the related systemd service files (as I did) in order to
figure out how to turn off NFSv3. Meanwhile, this does appear in
/etc/default/nfs-kernel-server, but doesn't seem to be used anywhere in
the systemd service file chain for nfsd:
# Runtime priority of server (see nice(1))
RPCNFSDPRIORITY=0
I'll just repost what I wrote to the NFS developers list about this:
The service file for the nfs server, /usr/lib/systemd/system/nfs-
config.service
includes this:
Wants=nfs-config.service
After=nfs-config.service
All nfs-config does is run this script:
ExecStart=/usr/lib/systemd/scripts/nfs-utils_env.sh
and the script reads the /etc/default/nfs* files and then
echo RPCNFSDARGS=\"$RPCNFSDOPTS ${RPCNFSDCOUNT:-8}\"
which then goes on the command line in the nfs-server service file:
ExecStart=/usr/sbin/rpc.nfsd $RPCNFSDARGS
So the solution is to add this line to /etc/default/nfs-kernel-server:
RPCNFSDOPTS="-N 2 -N 3"
Still unaccounted for is this variable in /etc/default/nfs-kernel-
server:
# Runtime priority of server (see nice(1))
RPCNFSDPRIORITY=0
Which I can't find used anywhere in the service files. But in any case,
adding the RPCNFSDOPTS variable resolved the issue:
root@helios:~# cat /proc/fs/nfsd/versions
-2 -3 +4 +4.1 +4.2
** Affects: nfs-utils (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
The tl;dr: version:
- An RPCNFSARGS needs to be added to /etc/default/nfs-kernel-server file
- in order to facilitate turning off NFSv3, so that the rpcbind dependency
- goes away. Meanwhile, this does appear in /etc/default/nfs-kernel-
- server, but doesn't seem to be used anywhere in the systemd service file
- chain for nfsd:
+ An RPCNFSARGS variable needs to be added to /etc/default/nfs-kernel-
+ server file in order to facilitate turning off NFSv3, so that the
+ rpcbind dependency goes away. Otherwise the user is forced to snoop
+ through all the related systemd service files (as I did) in order to
+ figure out how to turn off NFSv3. Meanwhile, this does appear in
+ /etc/default/nfs-kernel-server, but doesn't seem to be used anywhere in
+ the systemd service file chain for nfsd:
- # Runtime priority of server (see nice(1))
- RPCNFSDPRIORITY=0
+ # Runtime priority of server (see nice(1))
+ RPCNFSDPRIORITY=0
I'll just repost what I wrote to the NFS developers list about this:
The service file for the nfs server, /usr/lib/systemd/system/nfs-
config.service
includes this:
- Wants=nfs-config.service
- After=nfs-config.service
+ Wants=nfs-config.service
+ After=nfs-config.service
All nfs-config does is run this script:
- ExecStart=/usr/lib/systemd/scripts/nfs-utils_env.sh
+ ExecStart=/usr/lib/systemd/scripts/nfs-utils_env.sh
and the script reads the /etc/default/nfs* files and then
- echo RPCNFSDARGS=\"$RPCNFSDOPTS ${RPCNFSDCOUNT:-8}\"
+ echo RPCNFSDARGS=\"$RPCNFSDOPTS ${RPCNFSDCOUNT:-8}\"
which then goes on the command line in the nfs-server service file:
- ExecStart=/usr/sbin/rpc.nfsd $RPCNFSDARGS
+ ExecStart=/usr/sbin/rpc.nfsd $RPCNFSDARGS
So the solution is to add this line to /etc/default/nfs-kernel-server:
- RPCNFSDOPTS="-N 2 -N 3"
+ RPCNFSDOPTS="-N 2 -N 3"
Still unaccounted for is this variable in /etc/default/nfs-kernel-
server:
- # Runtime priority of server (see nice(1))
- RPCNFSDPRIORITY=0
+ # Runtime priority of server (see nice(1))
+ RPCNFSDPRIORITY=0
Which I can't find used anywhere in the service files. But in any case,
adding the RPCNFSDOPTS variable resolved the issue:
root@helios:~# cat /proc/fs/nfsd/versions
-2 -3 +4 +4.1 +4.2
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https://bugs.launchpad.net/bugs/1898778
Title:
RPCNFSDARGS missing from /etc/default/nfs-kernel-server
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