Re: [REGRESSION] NFS is creating a hidden port (left over from xs_bind() )
From: Steven Rostedt
Date: Fri Jun 19 2015 - 17:50:17 EST
On Fri, 19 Jun 2015 13:39:08 -0400
Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx> wrote:
> Hang on. This is on the client box while there is an active NFSv4
> mount? Then that's probably the NFSv4 callback channel listening for
> delegation callbacks.
> Can you please try:
> echo "options nfs callback_tcpport=4048" > /etc/modprobe.d/nfs-local.conf
> and then either reboot the client or unload and then reload the nfs
> modules before reattempting the mount. If this is indeed the callback
> channel, then that will move your phantom listener to port 4048...
I unmounted the directories, removed the nfs modules, and then add this
file, and loaded the modules back and remounted the directories.
# netstat -ntap |grep 4048
tcp 0 0 0.0.0.0:4048 0.0.0.0:* LISTEN -
tcp 0 0 192.168.23.22:4048 192.168.23.9:1010 ESTABLISHED -
tcp6 0 0 :::4048 :::* LISTEN -
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