From owner-freebsd-questions Fri Aug 4 6: 0:22 2000 Delivered-To: freebsd-questions@freebsd.org Received: from mercury.Sun.COM (mercury.Sun.COM [192.9.25.1]) by hub.freebsd.org (Postfix) with ESMTP id A86DA37B5F5 for ; Fri, 4 Aug 2000 06:00:17 -0700 (PDT) (envelope-from Jean-Marc.Fenart@france.sun.com) Received: from sunfra.France.Sun.COM ([129.157.188.1]) by mercury.Sun.COM (8.9.3+Sun/8.9.3) with ESMTP id GAA24041 for ; Fri, 4 Aug 2000 06:00:13 -0700 (PDT) Received: from sunchorus.France.Sun.COM (sunchorus [129.157.173.1]) by sunfra.France.Sun.COM (8.8.8+Sun/8.8.8/ENSMAIL,v1.7) with ESMTP id PAA10420 for ; Fri, 4 Aug 2000 15:00:11 +0200 (MET DST) Received: from bagana (bagana [129.157.173.76]) by sunchorus.France.Sun.COM (8.8.8+Sun/8.8.8) with SMTP id PAA07001; Fri, 4 Aug 2000 15:00:11 +0200 (MET DST) Message-Id: <200008041300.PAA07001@sunchorus.France.Sun.COM> Date: Fri, 4 Aug 2000 15:00:11 +0200 (MET DST) From: Jean-Marc Fenart Reply-To: Jean-Marc Fenart Subject: HA-NFS To: freebsd-questions@FreeBSD.ORG Cc: Jean-Marc.Fenart@france.sun.com, fa@sunchorus.France.Sun.COM MIME-Version: 1.0 Content-Type: TEXT/plain; charset=us-ascii Content-MD5: +vxPlewbDlDJw3bzATBcYA== X-Mailer: dtmail 1.3.0 @(#)CDE Version 1.3.2 SunOS 5.7 sun4u sparc Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hello I'm looking for an implementation of HA-NFS (Higly Available Network File Server) on top of a BSD. This is an extension of the standard NFS server implementation which roughly consists of having a secondary NFS server on the net which is able to (1) take the IP address of the failed primary, (2) re-mount the filesystem (requires an underlying disk mirroring), (3) update its cache of non-idempotent operations got (by msg checkpoint, disk storage or...) from the primary. This is totaly transparent for an NFS client, NFS protocol on the wire is unchanged. The original paper for it is a Usenix-91 (HA-NFS Anuman Bhide and all). Do you have a pointer for an implementation of this in the BSD environment ? Thank's for your help - JM Fenart - To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message