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X-Gateway-Source-Info: INTERNET Path: sparky!uunet!usc!news.service.uci.edu!unogate!mvb.saic.com!tgv.com!info-multinet Date: 14 SEP 92 22:16:40 GMT Newsgroups: vmsnet.networks.tcp-ip.multinet X-Return-path: <info-multinet-relay@TGV.COM> X-RFC822-From: adelman (Kenneth Adelman) @ TGV.COM From: adelman@TGV.COM Subject: Re: Logical disk on Sun for microVAX ?? Organization: The INFO-MULTINET Community Message-ID: <2C200ADE14SEP92221640@TGV.COM> Nntp-Posting-Host: Mvb.Saic.Com Lines: 38 > At our site we have a DEC MicrovaxII (running VAX/VMS 5.5, MultiNet 3.1) linked over ethernet to a Sun SPARCserver 4/490 (running SUNOS 4.1.1). We are having trouble with Multinet working between these machines to our specific requirements. > What we require is to have a directory mounted from the Sun server onto the Microvax using NFS Client. This directory will not be used from the Sun side (unix), but will be used exclusively as another "device" on the Microvax. > We have mounted the SUN directory with the following command: > NFSMOUNT/SEMANT=NOSTR/VOL=R76DISK cruiser::"/usr6/r76disk" R76DISK > There are some differences in behaviour between r76disk and a physical Vax disk, which we are trying to resolve. > 1. files copied or restored from a backup to r76disk lose their creation dates. NFS doesn't have a concept of a true creation date. Our NFS Client displays as the creation date of a file the UNIX (or "NFS") "ctime", which is really the time the inode was modified. Unfortunately, the NFS protocol gives no way of setting the ctime in a create or set attribute request, so we're completely at the mercy of the NFS Server to chose the creation time. Any request to change the creation time through the NFS Client is a no-op. > 2. files restored from backups to r76disk get execute permission > for system added to their file protection. NFS doesn't have a concept of system access. As such we display the system access as RWED. Any request to set the system access bits are ignored. The same is true of the "D" bit; "D" is not stored in the NFS server but rather displayed the same as the "W" bit. > 3. files copied to r76disk always get default file permissions > regardless of what file permissions they had to start with. What is happening here is that the create request comes across from RMS without any explicit permission setting in it, which results in us using the process default protections. If you do an explicit CREATE/PROTECTION= you'll get those protections. The F11B rules of default protections based on the protection of the directory, etc, don't apply over NFS. Ken