[CentOS] Shutdown hangs on "Unmounting NFS filesystems"

[John R Pierce]

On 8/30/2015 2:20 PM, Robert Nichols wrote:
> Once the system gets into this state, the only remedy is a forced
> power-off.  What seems to be happening is that an NFS filesystem that
> auto-mounted over a WiFi connection cannot be unmounted because the
> WiFi connection is enabled only for my login and gets torn down when
> my UID is logged off.
>
> Any suggestions on how I can configure things to avoid this?  I
> really don't want to expose my WPA2 key by making the connection
> available to all users. 

my experience is A) NFS doesn't like unreliable networks, and B) WiFi 
isn't very reliable.

perhaps using the 'soft' mount option will help, along with intr ?

-- 
john r pierce, recycling bits in santa cruz