[Samba] Samba 2.2.x & Solaris fcntl lock problem

[jra at dp.samba.org]

On Mon, Sep 09, 2002 at 11:46:31AM +0100, Broughton, Jim wrote:
> 
> Hi all,
> 
> We've had a couple of incidents where Samba 2.2.5 on Solaris 8 has stopped accepting new connections...there are many smbd processes sitting there blocked doing a: fcntl(7, F_SETLKW64, 0xFFBED5E0) (sleeping...)
> 
> We have around 400 users connecting on a daily basis.
> 
> This message from Samba 2.2.3 days seems to suggest that there was a problem on Solaris with "fcntl locks with multiple processes contending for locks":
> 
> http://lists.samba.org/pipermail/samba-technical/2002-April/036223.html
> 
> 
> Could somebody please confirm if this has been fixed in later 2.2.x releases or if there's a patch for Solaris?

This is not a problem Samba can fix, it is a "thundering herd"
problem with the Solaris implementation of fcntl locks.

There is a patch from Sun but I don't know if it's official
yet. DaveCB may know more.

Jeremy.