From owner-freebsd-hackers Tue Nov 23 7:42:51 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from acl.lanl.gov (acl.lanl.gov [128.165.147.1]) by hub.freebsd.org (Postfix) with ESMTP id 17F98152DD for ; Tue, 23 Nov 1999 07:42:17 -0800 (PST) (envelope-from rminnich@lanl.gov) Received: from mini.acl.lanl.gov (root@mini.acl.lanl.gov [128.165.147.34]) by acl.lanl.gov (8.8.8/8.8.5) with ESMTP id IAA261108; Tue, 23 Nov 1999 08:41:39 -0700 (MST) Received: from localhost (rminnich@localhost) by mini.acl.lanl.gov (8.9.3/8.8.8) with ESMTP id IAA04553; Tue, 23 Nov 1999 08:41:39 -0700 X-Authentication-Warning: mini.acl.lanl.gov: rminnich owned process doing -bs Date: Tue, 23 Nov 1999 08:41:39 -0700 (MST) From: "Ronald G. Minnich" X-Sender: rminnich@mini.acl.lanl.gov To: "David E. Cross" Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: wacky rpc.lockd idea... In-Reply-To: <199911222326.SAA79947@cs.rpi.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Mon, 22 Nov 1999, David E. Cross wrote: > I've noticed about 99% of the panics on our machines are the result of NFS, > more often than not it is the result of a backing store file being blown > away underneath the client. ie. person editing a file on one machine, > compiling and running on a second, then removing the binary on the first > machine. If we had a working lock manager could we not have the kernel open > a shared lock on anything it had in backing store, would that not assure that > files didn't go poof in the night? I think you're really proposing to add state to NFS, but add it via a 'back door', the lockd. I think this is not as good an idea as getting coda or intermezzo working -- for the latter, www.inter-mezzo.org nfs is just plain broken for this sort of thing, and has been forever. I'm not sure you want to start grafting on fixes of this sort. ron To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message