Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!sdd.hp.com!ucsd!ucbvax!CCIT.ARIZONA.EDU!NEASHAM From: NEASHAM@CCIT.ARIZONA.EDU Newsgroups: comp.protocols.tcp-ip.ibmpc Subject: Re: InterDrive NFS to an MVS NFS Server? Message-ID: Date: 2 Jan 91 18:54:00 GMT Sender: daemon@ucbvax.BERKELEY.EDU Organization: The Internet Lines: 37 On 12/20/90 at 10:57:40 Frances Selkirk said: >InterDrive should communicate with any NFS server. That's the point of >a standard, right? The only problem might be with authentification. I'm >not sure if there is a pcnfsd for MVS, or if the one we include with >InterDrive can be ported to it... Bryan returned with: >We do not run IBM's NFS server on MVS, but we do run it on VM, and we >have had terrible problems with it. It is hard to get a disk mounted, >especially to write on. Authentication is indeed the problem. It would >not surprise me to see the same problem exist for MVS. I have been in the throws of evaluation of several PC TCP/IP packages for our IBM MVS/VM/AIX, DEC VMS, and CONVEX UNIX-port shop. The problems with VMNFS turned out to be non-trivial: 1) the user must set ALL THREE of thier minidisk passwords to be the same; 2) VMNFS does not relinquish R/W access when the drive is dismounted OR when the link is terminated. IBM claims this is a "feature" as this reduces overhead if you decide to re-mount the drive. Sigh... It may be possible to send a command via REXEC {since it works if you telnet in }, to terminate its hold of the form: SMSG VMNFS any-tag-name DETACH userid.vaddr We will soon be installing a port of TCP/IP from a university in Canada, focusing on the LPD/LPR initially {with special attention to Joiner JNET linkage to the VaxCluster}, and hope to resolve the NFS mount problem in this manner. If there is interest, I will be glad to report the results... Fred Neasham Univ. of Az.; CCIT Systems Programmer 602-621-1290 NEASHAM@ARIZRVAX.CCIT.ARIZONA.EDU