[702] in Release_7.7_team
Revised Hesiod Information for 8.0
daemon@ATHENA.MIT.EDU (Craig Fields)
Wed Aug 7 20:33:25 1996
Date: Wed, 7 Aug 1996 20:33:23 -0400
From: Craig Fields <cfields@MIT.EDU>
To: ops@MIT.EDU, release-team@MIT.EDU
Following is a revised layout of how everything should eventually look
for clusters that provide 8.0.
The notable changes since last time are in the public-generic cluster;
it turns out the former plan was flawed in a couple of different
ways. The generic cluster now (a.) includes an instlib and (b.) has no
version specific information in it - it points to @sys/srvd instead of
having versioned information, one pointing to @sys/srvd.77 and the
other to @sys/srvd.80. Then, srvd is always a symlink to srvd.XX, as
appropriate.
The previous layout failed for the case of an old machine that was
AUTOUPDATE true. This layout returns to the convention of having the
srvd link, which we previously hadn't known all of the reasons for
doing, and with this setup the public-generic cluster should probably
never need to be changed again unless conventions change
significantly.
---
Cluster: public-generic
instlib athena-generic-inst
syslib athena-genericsys
athena-generic-inst AFS /afs/athena.mit.edu/system/@sys/install
athena-genericsys MUL athena-generic-os athena-generic-srvd
athena-generic-os AFS /afs/athena.mit.edu/system/@sys/os
athena-generic-srvd AFS /afs/athena.mit.edu/system/@sys/srvd
Clusters: alpha-sun4, beta-sun4
syslib public-sunsys
syslib dev-sun4sys-80 8.0
public-sunsys AFS /afs/athena.mit.edu/system/sun4m_53/srvd.77
dev-sun4sys-80 MUL dev-sun4-os-80 dev-sun4-srvd-80
dev-sun4-os-80 AFS /afs/dev.mit.edu/system/sun4m_54/os
dev-sun4-srvd-80 AFS /afs/dev.mit.edu/system/sun4m_54/srvd.80
Clusters: public-sun4, early-sun4
syslib public-sunsys
syslib athena-sun4sys-80 8.0
public-sunsys AFS /afs/athena.mit.edu/system/sun4m_53/srvd.77
athena-sun4sys-80 MUL athena-sun4-os-80 athena-sun4-srvd-80
athena-sun4-os-80 AFS /afs/athena.mit.edu/system/sun4m_54/os
athena-sun4-srvd-80 AFS /afs/athena.mit.edu/system/sun4m_54/srvd.80
Clusters: alpha-sgi, beta-sgi
syslib public-sgisys
syslib dev-sgisys-80 8.0
instlib dev-sgi-inst-80 8.0
public-sgisys AFS /afs/athena.mit.edu/system/sgi_52/srvd.77
dev-sgisys-80 MUL dev-sgi-os-80 dev-sgi-srvd-80
dev-sgi-os-80 AFS /afs/dev.mit.edu/system/sgi_53/os
dev-sgi-srvd-80 AFS /afs/dev.mit.edu/system/sgi_53/srvd.80
dev-sgi-inst-80 AFS /afs/dev.mit.edu/system/sgi_53/install
Clusters: public-sgi, early-sgi
syslib public-sgisys
syslib athena-sgisys-80 8.0
instlib athena-sgi-inst-80 8.0
public-sgisys AFS /afs/athena.mit.edu/system/sgi_52/srvd.77
athena-sgisys-80 MUL athena-sgi-os-80 athena-sgi-srvd-80
athena-sgi-os-80 AFS /afs/athena.mit.edu/system/sgi_53/os
athena-sgi-srvd-80 AFS /afs/athena.mit.edu/system/sgi_53/srvd.80
athena-sgi-inst-80 AFS /afs/athena.mit.edu/system/sgi_53/install
Filesystem aliases:
athena-sun4sys athena-sun4sys-80
athena-sgisys athena-sgisys-80
dev-sun4sys dev-sun4sys-80
dev-sgisys dev-sgisys-80
---
A few things to note:
The filesystem aliases exist for user convenience only, and
should not be used in cluster information. Otherwise, machines
could involuntarily be pointed to new system packs when they
should not be.
syslib information pointing to 7.7 must not be tagged as 7.7.
This is because 7.7 machines that have not been updated to the
latest patch don't parse the tag in the currently correct way,
and so would lose track of their system packs entirely.
All syslib information other than 7.7 must be tagged
appropriately.
I have chosen to leave public-sunsys and public-sgisys as
they are and continue to use them for 7.7 pointers, leaving
well-enough alone.
In all /afs/athena/system/@sys directories, there should be
an srvd symlink pointing to the latest srvd.XX for that @sys
value. This is required for the proper functioning of the
generic cluster. Note however that when there are multiple
releases for a given @sys value, the latest will be chosen,
and so any machine not running the latest release that is
moved into the generic cluster will be directed to the newer
system packs.
