Re: Path for rpc_pipefs

[Jeff Layton <jlayton@kernel.org>]

On Tue, 2025-06-03 at 15:38 -0700, Anthony Rossomano wrote:
> I wanted to get some input about changing the path to rpc_pipefs mount point. Can this be done and how to do it. The mount unit provided by nfs-utils pkg is cfg’d with path to /var/lib/nfs/rpc_pipefs but you can change the path for dependent services in /etc/nfs.conf. Can a new mount unit be created to change the mount path? Env is Alma 8. Having trouble because mount point is created early and need to remount /var elsewhere later, and need to deal with the rpc_pipefs mount point. Changes to systemd dependencies are not panning out. Thanks in advance for any input

Most of the daemons that work with rpc_pipefs take a command-line
parameter to change where the rpc_pipefs mountpoint is. Adding matching
config options to nfs.conf would probably not be too difficult.

I suggest pulling down the nfs-utils tree [1], and look at how the
nfs.conf handling is done. Find the places where the rpc_pipefs
directory path is set and have them check the config file for the
default and fall back to the compile-time default if it's not set.

FWIW, it looks like blkmapd already has a config file parameter for
this, so mirroring that for the other daemons is probably what you want
to aim for.

[1]: git://git.linux-nfs.org/projects/steved/nfs-utils.git
-- 
Jeff Layton <jlayton@kernel.org>