rapid clustered nfs server failover and hung clients -- how best to close the sockets?

[Talpey, Thomas]

At 03:01 PM 6/9/2008, Jeff Layton wrote:
>On Mon, 09 Jun 2008 13:51:05 -0400
>"Talpey, Thomas" <Thomas.Talpey at netapp.com> wrote:
>
>> At 01:24 PM 6/9/2008, Jeff Layton wrote:
>> >
>> >"Be sure to wait for X minutes between failovers"
>> 
>> At least one grace period.
>> 
>
>Actually, we have to wait until all of the sockets on the old server
>time out. This is difficult to predict and can be quite long.

I just gave the floor. The ceiling is yours. :-)

Orphaned server TCP sockets, btw, in general last forever without keepalive.
Even with keepalive, they can last many tens of minutes.

Tom.