FreeBSD NFS server not responding to TCP SYN packets from Linux/SunOS clients

[Nicolas KOWALSKI]

Eric Anderson <anderson at centtech.com> writes:

> Nicolas KOWALSKI wrote:
>> Mike Silbersack <silby at silby.com> writes:
>>
>>>Actually, there may be a quick fix for this specific machine.  If
>>>you set net.inet.tcp.keepidle to 1 minute (60*whatever kern.hz is),
>>>that'll cause keepalive packets to be sent every minute to an idle
>>>connection, rather than every 2 hours.  That would kill the stuck
>>>connections much quicker.

>> Unfortunately, this does not work as expected. I just tested with
>> my workstation (Linux 2.6), with NFS filesystems mounted with TCP;
>> when the station rebooted abruptely, mounting the same NFS
>> filesystems hung more than 1 minute (15 minutes just now). During
>> this hang, I saw on the server, using netstat, the nfsd process
>> related to my workstation in ESTABLISHED state.
>
>
> Man fixmount?

This is a FreeBSD-only command apparently. I did not find it on Linux
or Solaris. It could have been useful, by calling it before NFS
filesystems are mounted on clients, yes.

Thanks anyway,
-- 
Nicolas