[Samba] deadtime/keepalive not working as expected

[Jeremy Allison]

On Tue, Nov 01, 2016 at 05:16:47PM -0500, Ed Siefker via samba wrote:
> My expectations are probably wrong, but I had to manually kill a process
> to unlock a file when I think it should have killed itself.
> 
> I have deadtime set to 15 and keepalive at default (300).  I opened a file on
> my server in Excel, then shut down the machine.  Hours later someone
> tells me the file is locked.
> 
> Shouldn't keepalive have detected that the machine was off in 5 minutes?
> Shouldn't deadtime have disconnected the process and unlocked the file
> 15 minutes later?  Do I misunderstand what is going on?  Thanks

Once the client is dead the TCP keepalive's should
detect the socket is down and thus shut off the servicing
smbd. Check this by doing a wireshark capture and a
debug level 10 on that smbd.