Path: utzoo!attcan!uunet!tut.cis.ohio-state.edu!zaphod.mps.ohio-state.edu!usc!rutgers!cbmvax!grr
From: grr@cbmvax.commodore.com (George Robbins)
Newsgroups: comp.unix.ultrix
Subject: Re: Problems with file locking (Ultrix and HP-UX)
Keywords: Ultrix file locking fcntl HP-UX NFS
Message-ID: <13116@cbmvax.commodore.com>
Date: 9 Jul 90 21:36:43 GMT
References: <58061@bbn.BBN.COM>
Reply-To: grr@cbmvax (George Robbins)
Organization: Commodore, West Chester, PA
Lines: 39

In article <58061@bbn.BBN.COM> fkittred@spca.bbn.com (Fletcher Kittredge) writes:
> 
> I have been testing Posix style file locking on Ultrix 4.0(FT 2)
> and 3.1 on both RISC and VAX in preparation for using it in a
> product.  I have had strange results.  And was hoping someone could
> enlighten me.  
> 
> However, on Ultrix 3.1 systems, locking a NFS mounted file is extremely
> slow (200 times slower than locking a local file).  This seems to be
> the case whether the Ultrix 3.1 system is the locking client or the
> NFS server.  I tested this with the following systems being both
> client and server:

There is a patch against the base 3.1 release having to do with NFS
file locking.  I know it applies to the VAX release, but is included in
the latter RISC child releases.  Check with the support center...

lockd, klm_lockmgr.o
--------------------
On systems using nfs locking, this daemon and kernel patch will cause
the locks to perform at a much faster rate. In addition, there is a
bug fix or two included.

> In addition, when Ultrix 4.0(FT 2) is the client platform, and HP-UX is
> the server platform, I am unable to get a lock at all.  Calling fnctl()
> to lock the first time returns -1 and perror() prints the following
> message on Ultrix:
> 
> 2) Is the problem with locking between Ultrix 4.0 and HP-UX a known
> problem, whose problem is it, and when will it be fixed?  (I am
> reporting it to Ultrix Field Test).

I think that reporting it as a field test problem would have to be the
starting point - that's what field test releases are for...

-- 
George Robbins - now working for,     uucp:   {uunet|pyramid|rutgers}!cbmvax!grr
but no way officially representing:   domain: grr@cbmvax.commodore.com
Commodore, Engineering Department     phone:  215-431-9349 (only by moonlite)