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- Installation Notes for Amd.
-
- NOTE: Please read all of this before starting.
- It is not very long and may save you time in the long term.
-
- 1. ``Getting started...''
-
- If you got this release in a shar file then run the shell script Configure in
- the top directory. If you got this release in a tar file then you are all
- set (though if you feel left out you can run Configure anyway).
-
- 2. ``Find out what version of UN*X you are running...''
-
- To install Amd you need a port for your version of UN*X. In this directory
- are several files called os-*.h. One of these should correspond to your
- version of UN*X. Look at the comments at the top of each file to determine
- which one applies to you. If none of them do, then either no-one has yet
- done a port, or your version of UN*X is so braindead that a port is not
- possible (e.g. System V without reliable signals). Run the program
- "config/os-type" in the current directory to see whether you and Amd are in
- agreement about your operating system type. The current known operating
- systems (grouped by architecture) are:
-
- acis43 (AOS) ACIS 4.3BSD on an IBM RT
- aix3 AIX 3.1
- aux Apple A/UX
- bsd44 4.4 BSD on whatever
- concentrix Concentrix on an Alliant
- fpx4 Celerity FPX 4.1/2
- hlh42 4.2 BSD on HLH Orion 1/05
- hpux HP-UX 6.* and 7.* on a HP9000/300
- riscix 4.3 BSD on an Acorn Archimedes
- sos3, sos4 SunOS 3.* and 4.* on a Sun-3 and Sun-4
- u2_2 Ultrix 2.2 (or 2.*?) on a VAX (broken)
- u3_0 Ultrix 3.0/4.0 (or 3.*?) on a VAX
- umax43 4.3 BSD on an Encore Multimax
- utx32 UTX/32 Rel2.1a on a Gould (not yet complete)
- xinu43 More/BSD (4.3 BSD) on a VAX or HP9000/300
-
- + some others...
-
- If you do define a new operating system type foo, you may care to create a
- file called Makefile.foo which defines the special Makefile parameters.
-
- 3. ``Hacking the Makefile...''
-
- Some UN*X programs come with a Makefile which has to be manually configured
- for your particular operating system and hardware. However, Amd tries very
- hard to determine what type of machine you are using and how best to compile
- itself. If this does not work then you will have to find some heuristic
- which can differentiate your configuration. You may need to edit
- "config/arch" and "config/os-type". If you do make sure your changes can
- cope if /etc/motd is missing and please send it to the address below.
-
- You may care to tailor some site specific preferences in "Makefile.com". The
- variables most likely to be changes are at the top. Any changes are best put
- in the file Makefile.local (if they are applicable to all operating systems
- at your site) or Makefile.local.foo (where foo is the OS type as determined
- in part 1).
-
- Additionally, some configuration options may be altered in
- "config/Makefile.config". This means that you should not need to edit any
- distributed files apart from "config/Makefile.config". As a minimum, you
- should check:
-
- * You are using the correct C compiler. Amd, as shipped, does not use GCC.
- Note that using GCC version 1.34 or later (e.g. 1.36) gives structure
- passing problems with some parts of Sun's RPC library at least on Sun-4's.
- The current workaround is to use the system CC to compile the part of the
- automounter that gets hit by this problem. [[This is not the same problem
- that is fixed by -fpcc-struct-return.]] Amd contains no "register"
- declarations, so using old PCC based code generators is probably bad news.
-
- * The installation directory (ETC) is set up correctly.
-
- * If you are running tests then it may be worth switching on the DEBUG flag
- which will cause a running commentary to be printed to the log file.
-
- 4. ``Build the executable...''
-
- Now you need to compile the automounter. To do this you type:
-
- make
-
- If you are porting to a new machine you may want to do:
-
- make OS=foo
-
- where foo is the name of your version of UN*X as determined in part 1, until
- you have made the changes to config/os-type and/or config/arch. When the
- compilation is complete you will end up with a program called "A.arch_foo/Amd".
-
- Try running:
-
- A.arch_foo/amd -v
-
- and check the output. It should look something like:
-
- amd 5.2 of 90/06/23 23:55:04 Rel5.2 #0: Sat Jun 23 16:24:42 PDT 1990
- Built by pendry@okeeffe.Berkeley.EDU for a tahoe running bsd44 (big-endian)
- Map support for: root, passwd, nis, file, error.
-
- Make sure the O/S and architecture types were correctly derived during the
- build.
-
- 5. ``Installation...''
-
- If you are not just testing Amd, then you can install it by typing:
-
- make install
-
- to install "A.arch_foo/Amd" in "/usr/local/etc/amd" (or as otherwise
- modified in part 2).
-
- 6. ``Update /etc/rpc''
-
- Amq uses Sun RPC to talk to Amd using program number 300019 which has
- been registered with Sun. Add the following lines to /etc/rpc or your
- YP or Hesiod master:
-
- # Automount control protocol
- amd 300019 amq
-
- 7. ``Hanging your machine...''
-
- WARNING: THIS MAY HANG YOUR MACHINE IF YOU GET IT WRONG.
-
- Running Amd with a carelessly thought out mount map can cause your Amd to
- enter a deadlock inside the kernel. For example, attempting to automount a
- directory which is automounted can cause the automounter to issue a mount
- request causing the kernel to send an NFS request back to the same automounter,
- which is currently stuck in a system call and unable to respond - even
- kill -KILL won't get you out of this one.
-
- There is nothing you can do to fix it without rebooting your machine, so...
-
- Find a diskless workstation and play with that first before trying this on
- your main 200 user service machine (unless you hate your users). Something
- like a diskless Sun-4 is best for development testing - you can compile on a
- Sun-4 server and run the binary on the diskless node. They reboot very fast
- as well between tests.
-
- Now you can try running Amd. Please read the documentation in doc/Amd.tex
- for more details. The configuration file "a_master" provides a sample for
- you to play with. Something like:
-
- ./amd -c 40 -D test,nodaemon /tmp/amnt a_master &
-
- is good for testing. Note that Amd will clean up correctly if you send it a
- SIGINT or SIGTERM. Other signals are either ignored or will blow it away,
- leaving your machine in a potentially dangerous state - usually a reboot is
- all that is required to fix it though ;-)
-
- Remember that Amd needs to run as root in order to do mounts/unmounts though
- it does check this condition somewhere near line one of main(). It will also
- need write permission in the working directory if you have built it with
- DEBUG defined. Watch out for NFS stepping in and mapping root to nobody.
-
- 8. ``Report what happened...''
-
- If anything interesting happened, eg it didn't work, please report it to me
- -- Jan-Simon Pendry <jsp@doc.ic.ac.uk> -- as detailed in the README file.
-
- KNOWN PROBLEMS - Contact me for more details
-
- * Amd does not work correctly on a DecStation 3100 system running Ultrix 3.1.
- This is a bug in Ultrix. Quite how the Ultrix mount command works is a
- total mystery, but in any case the mount system call does not behave as
- documented. Possibly fixed in Ultrix 4.0?
-
- * It is reported that amd deadlocks the kernel on a Sequent Symmetry.
- Obviously this is a kernel bug.
-
- $Id: INSTALL,v 5.2 90/06/23 22:21:31 jsp Rel $
-