issy@eevlsi.ee.columbia.EDU (Isidore G. Bendrihem) (05/11/87)
We have a VAX 11/750 running under 4.3BSD. We are looking into the possibility of adding several SUN stations which would be sharing a hard disk via NFS. We'd like to have the vax also running NFS so that its disks could be shared by the SUNs. Has anybody in the net tried this configuration, that is, several SUNs and a VAX running NFS? If so, how heavily does this configuration tax the limited computing power of the VAX? Any pointers to vendors that distribute NFS for the VAX (prices?), would be greatly appreciated. Is NFS in the public domain? Thanks. Isidore Bendrihem issy@eevlsi.ee.columbia.edu eleng@cs.columbia.edu
rebecca@sutcase.case.syr.EDU (10/21/87)
I am seeking information on NFS for a vax 780 running unix 4.3. I would appreciate hearing about various aspects -- from where I can get it; cost, etc to how happy people are with it, installation problems, limitations. Please mail directly to me; I will summarize to the net. Thanks! Rebecca Snedden rebecca@sutcase.case.syr.edu Case Center Syracuse Univ.
mchinni@pica.army.mil (Michael J. Chinni, SMCAR-CCS-E) (07/26/89)
Systems: s1 DEC VAX 8600 ULTRIX 3.0
s2 GOULD PN9080 UTX/32 2.0u03
Filesystems:
s1: /u1 /u2 /u3
s2: /u1 /u2 /u3 /u4 /u5
Wanted:
s1 filesystems nfs mounted on s2
s2 filesystems nfs mounted on s1
Why:
To help with continuity of operations. If s1 goes down and stays down,
users and thier files from s1 are put on s2. If s2 goes down and stays down,
users and thier files from s2 are put on s1. Normally, this means doing
restores from dump tapes. BUT the dump tape format of s1 and s2 are NOT
compatable (i.e. dump from s1 not usable via restore on s2 and visa-versa).
NFS mounting lets us use s1 dump to dump s2 filesystems, and use s2 dump to
dump s1 filesystems. Thus allowing restores if required.
Problem:
How do I do the nfs mounting? I have RTM and did what it said (i.e
/etc/mount -t nfs s1:/u1 /s1u1
but I get permission denied. What am I not doing or doing wrong?
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/
Michael J. Chinni
Chief Scientist, Simulation Techniques and Workplace Automation Team
US Army Armament Research, Development, and Engineering Center
User to skeleton sitting at cobweb () Picatinny Arsenal, New Jersey
and dust covered workstation () ARPA: mchinni@pica.army.mil
"System been down long?" () UUCP: ...!uunet!pica.army.mil!mchinni
/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/chris@mimsy.UUCP (Chris Torek) (07/26/89)
In article <20365@adm.BRL.MIL> mchinni@pica.army.mil (Michael J. Chinni, SMCAR-CCS-E) writes: >Systems: s1 DEC VAX 8600 ULTRIX 3.0 > s2 GOULD PN9080 UTX/32 2.0u03 >... the dump tape format of s1 and s2 are NOT compatable Correct; dump tapes are machine dependent. Use tar or cpio for machine independent backups (tar will not back up device special files, which is proper---special files are machine dependent0---and will fill holes, which is sometimes but not always bad). >NFS mounting lets us use s1 dump to dump s2 filesystems, and use s2 dump to >dump s1 filesystems. This is misguided. Dump reads the raw device-special file, which is why it and its tapes are machine-dependent. It does this for speed. It is usually possible (and sometimes even easy) to jury-rig restore so that it can restore dump tapes made from other systems. The 4.3BSD-tahoe restore can read Sun dump tapes. -- In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7163) Domain: chris@mimsy.umd.edu Path: uunet!mimsy!chris
wytze@gouldnl.UUCP (Wytze van der Raay) (07/26/89)
In article <20365@adm.BRL.MIL> mchinni@pica.army.mil (Michael J. Chinni, SMCAR-CCS-E) writes: >Systems: s1 DEC VAX 8600 ULTRIX 3.0 > s2 GOULD PN9080 UTX/32 2.0u03 >Filesystems: > s1: /u1 /u2 /u3 > s2: /u1 /u2 /u3 /u4 /u5 >Wanted: > s1 filesystems nfs mounted on s2 > s2 filesystems nfs mounted on s1 > ... >Problem: > How do I do the nfs mounting? I have RTM and did what it said (i.e >/etc/mount -t nfs s1:/u1 /s1u1 >but I get permission denied. What am I not doing or doing wrong? Create /etc/exports on s1 with contents: /u1 s2 /u2 s2 /u3 s2 and create /etc/exports on s2 with contents: /u1 s1 /u2 s1 /u3 s1 /u4 s1 /u5 s1 Now try "/etc/mount s1:/u1 /s1u1". Next read "mount(8)" to learn about specific options for mounting NFS file systems, and "exports(4)". Perhaps try reading exports (4) as well. Please note that you cannot use "dump" for an NFS-mounted filesystem. -- | Wytze van der Raay ...!hp4nl!gouldnl!wytze | | Encore Unix Centre Europe (EUCE) wytze@gouldnl.uucp | | Maarssenbroek, The Netherlands (USA) ...!gould!wraay |
DGosner%TOE.TOWSON.EDU@cornellc.cit.cornell.edu (07/27/89)
> >Problem: > How do I do the nfs mounting? I have RTM and did what it said (i.e >/etc/mount -t nfs s1:/u1 /s1u1 > >but I get permission denied. What am I not doing or doing wrong? > > Michael J. Chinni you have to create the file /etc/exports on the system which has the file system you are trying to nfs mount - in your case s1... /etc/exports grants permission to certains other systems to nfs mount certain fiel systems... there are a variety of options, etc. that let you control security... the basic format for what you need is: in /etc/exports on s1: /u1 s2 in my ultrix doc, it's all explained in exports(5nfs) and in the system management volume 3... i don't know where it would be in the real world'd doc... Dan Gosner Operations Manager Towson State Univerity Towson, MD 21204