wbkh@cgch.UUCP (Bruce K. Haddon) (02/01/88)
I would appreciate {e|s}-mailed replies to the following question:
The Sun Microsystems Configuration Guide states that a "range of 1 to
20 client workstations per disk server" are permitted, and that with
"one 575-megabyte disk, 1 to 10 clients" are possible.
Our situation is that we have tried with a Sun-3/280, with two
SuperEagle 575-Mbytes disks (with a controller each), to configure
more that 10 clients. But if we specify more that 10 file systems in
/etc/fstab, the system objects (I do not have the actual messages and
symptoms to hand). We really do need to go beyond the 10 limit, and
with the amount of disk that we have, there should be no trouble going
as far as 20.
What are we missing in terms of parameters, or other things that need
to be established to be able to configure the file systems, and get
more than 10 diskless workstations operating on one Sun file server?
Any help would be appreciate (this question has also been passed
independently to Sun Microsystems, but we need an answer fast!)
- --------------------------------------Bruce K. Haddon
Wissenschaftliches Rechen Zentrum
R-1033.532, Ciba-Geigy AG
{mcvax!}cernvax!cgch!wbkh CH-4002 Basel, Switzerlandbzs@BU-CS.BU.EDU (Barry Shein) (02/08/88)
From: wbkh@cgch.UUCP (Bruce K. Haddon) >The Sun Microsystems Configuration Guide states that a "range of 1 to >20 client workstations per disk server" are permitted, and that with >"one 575-megabyte disk, 1 to 10 clients" are possible. > >Our situation is that we have tried with a Sun-3/280, with two >SuperEagle 575-Mbytes disks (with a controller each), to configure >more that 10 clients. But if we specify more that 10 file systems in >/etc/fstab, the system objects (I do not have the actual messages and >symptoms to hand). We really do need to go beyond the 10 limit, and >with the amount of disk that we have, there should be no trouble >going as far as 20. Whoa, slow down, park it right over there and let's talk... What does "file systems in fstab" have to do with setting up diskless clients? They don't use separate file systems in fstab. Their swap and root are specified in /etc/nd.local as ranges of blocks which split up a very few (usually one per physical disk on the server, two Super Eagles, two partitions) partitions. You can have more but it's not particularly helpful or necessary (usually the result of an unplanned expansion.) The Sun setup utility should lead you through this although you will probably have to do a full dump of your entire system and start over again unless you really know how to set these things up yourself (doesn't sound like it, but you could learn, heh heh.) I recently posted a note in SUN-SPOTS (comp.sys.sun) describing the manual procedure in general terms. In short: the partitions for the diskless clients are not reflected in /etc/fstab (other than /pub), they're in /etc/nd.local in an entirely different form. Of course, any observed complexity is "fixed in 4.0". -Barry Shein, Boston University
barnett@vdsvax.UUCP (Bruce G. Barnett) (02/09/88)
In article <8802011129.AA29492@cgcha.cgch.uucp> wbkh@cgch.UUCP (Bruce K. Haddon) writes: |more that 10 clients. But if we specify more that 10 file systems in |/etc/fstab, the system objects (I do not have the actual messages and |symptoms to hand). We really do need to go beyond the 10 limit, and |with the amount of disk that we have, there should be no trouble |going as far as 20. You must specify one (or more partition on the disk to be an nd partition) i.e. unused. - not in /etc/fstab. Then you modify /etc/nd.local to sub-divide the one partition into 10 root partitions and 10 swap partitions. using SETUP when you install the system is advised. -- Bruce G. Barnett <barnett@ge-crd.ARPA> <barnett@steinmetz.UUCP> uunet!steinmetz!barnett