Mysterious NFS mount timeouts
In an ltsp environment (using initramfs), mounting / might take longer than 2
attempts in a second.
Specially in cases in which the switch, to which server and clients are
connected, is either overloaded
or negotiating the port speed. The result is a client not being able to mount
the real nfs root
From some test machines i have here a good timeout is never less than 15 secs.
(on an tg3 gigabit connected to a 10Mb port, it takes around 9 secs to negotiate
+ the time to resend the dhcp request that is exponential from the previous