nfsiod tasks started in error

Brooks Davis brooks at
Thu Apr 7 13:59:33 PDT 2005

On Thu, Apr 07, 2005 at 04:55:34PM -0400, bob at wrote:
> On Thu, Apr 07, 2005 at 04:11:55PM -0400, bob at wrote:
> > During sysinstall answered no to the server and client nfs
> questions
> > and after installed completed and system rebooted I see task
> > nfsiod1,2,3,4 running in output of ps ax command.  This was not
> the
> > case in any of the 4.x releases. This can be looked upon as a
> > security leak. This may be a error in the new boot up process.
> This
> > was first reported 1/16/2004 in 5.2 RC2 as Problem Report
> kern/61438
> > and again in 5.3 as Problem Report kern/79539
> >
> > I tried to run /usr/local/etc/rc.d/ script to kill these
> > unwanted tasks but that does not work.
> >
> > Any suggestions on how I can kill these bogus nfs tasks as part of
> > boot up or what to change in the boot up process so these tasks
> > don't get started in the first place? Doing a manual recompile of
> > the kernel to remove the nfs statements is not a viable solution.
> nfsiod now runs as a kernel process and is control by these sysctls:
> vfs.nfs.iodmaxidle: 120
> vfs.nfs.iodmin: 4
> vfs.nfs.iodmax: 20
> It looks like setting vfs.nfs.iodmin=0 and then klling them off
> works.
> We probably should think about changing the default to 0 and setting
> appropriate values via /etc/rc.d/nfs.  Over all, I can't say this is
> a
> very high priority though patches would certaintly be accepted.
> -- Brooks
> vfs.nfs.iodmin=0 in sysctl.conf did not stop those tasks from
> starting.
> I know that  kill pid  works  but where can I bury a script
> containing the kill commands that will get run after those nfs tasks
> get started?

/usr/local/etc/rc.d should be late enough if you set vfs.nfs.iodmin=0 in
sysctl.conf.  Personally, I'd recommending finding something more
important to worry about.

-- Brooks

Any statement of the form "X is the one, true Y" is FALSE.
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