I can understand that the Volume concept is handled by the idea of a
path in Linux, right? Hmm... Are the globals just Linux files? If so,
wouldn't the directory take the place of the UCI? But I guess the next
question is how is this exposed inside GT.M?
K.S. Bhaskar wrote:
GT.M does not have the concept of UCI and Volume, so I think for the
GT.M port they're always VAH & ROU. (Or am I getting things mixed up?)
Also, when VistA is ported to GT.M, I believe the routines look for the
hostname from the Linux command "hostname -s".
Perhaps Chris Richardson, Rick Marshall, Wally Fort or Dave Whitten
could comment?
-- Bhaskar
On Sun, 2004-11-21 at 23:21, Nancy E. Anthracite wrote:
I have OV3 and Fedora Core 2.
I bet you are using the version on the VA ftp site. That is available
preinstalled on Knoppix on Sourceforge thanks to Bhaskar in the VivAFOIAGold
on the WorldVistA project site. It can be installed right on your machine if
you want or run off of the DVD.
Anyway, I would suggest you don't spend a lot of time looking at man hostname
and the like unless you REALLy want to spend a lot of time because you end up
going in a circle from hostname to something else to something else that ends
up referring back to hostname again. I got dizzy when I tried it.
The best I was able to do with Fedora was to figure it out with experiments
and to find out the machine name probably has to be changed in multiple
places to really change the machine name for Fedora
including /etc/hosts, /etc/config/network and
sysctl -w kernel.hostname="newhostname" .
After that, I decided that was really much more than I needed to know or cared
to know about machine names and Fedora, as long as I could figure out where
to get at hostname -s changed.
As for the ^ZOSF("PROD") and where that is set, it looks like im my ^ZTMGRSET,
it just gets the UCI and Volume it from ^ZOSF("PROD"), so that didn't help
figure out how that is set.
On Sunday 21 November 2004 08:54 pm, Daniel Gray wrote:
Thanks Fil, I take that as a great compliment. And you knew I would.
All other readers: Fil has exaggerated my reputation as a hacker, but
maybe it was because of something I said . . .
Nancy: I'm not too sure what information will help, but here is a
paragraph from Krn8_Osm.pdf
==============
BOX-VOLUME PAIR
This field identifies a volume set and the CPU on which it is available. It
contains the name of a volume set concatenated to the CPU ("box") name:
first the volume set name and then the CPU name. For example, if the
volume set name is "KRN" and the name of the CPU (e.g., box) is "ISC6A1",
then the box-volume pair would be "KRN:ISC6A1".
For systems on which each CPU tends to have a unique volume set, and vice
versa, you may enter just the volume set name (e.g., "PSA" or "AAA"). This
field's value for the current process can be found by doing GETENV^%ZOSV
and checking the fourth ^-piece of Y. Since the volume set and CPU are
identified, the TaskMan site parameters can be tuned for each specific
volume set and CPU affected. Systems running Managers on more than one
CPU need one entry for each CPU where a manager is running.
=============
So for Kernel to work, VOL:BOX has to be set up right. But why do they
call it Box-Volume, why not call it Volume-Box? The name of it caused me
some confusion when I was setting up taskman. And yes, the ^%ZOSF("PROD")
and ^%ZOSF("MGR") and ^%ZOSF("VOL") have to be all set right, and that is
done when you do ^ZTMGRSET. Maybe ^ZTMGRSET should get "BOX" name, and at
least begin setup of KERNEL SITE PARAMETERS. Maybe it does.
The version of Kernel I am running, has the code I showed below, that is,
the call to GETENV^%ZOSV calling RETURN^%ZOSV which evoked the GTM function
ZSYSTEM("hostname -s")
>From the GTM documentation, it looks like the ZSYSTEM call is a way to
generate a "plainjane" Linux command. And I would suppose that one could
say, to Linux
#hostname -s
and you would get a parameter out of the etc/hosts file, hopefully the
"box" name, or the short name of your computer.
I think that Linux uses different names for different things, Redhat9, I
think, provides for a longname and a shortname, and whoever wrote the
^%ZOSF that I have, knew to look for the short name (thus "-s"). One could
do $man hostname and see what it says there, I will do that when I get a
chance. But there should be some documentation somewhere that tells the
naïve user to name his computer with a short and sweet alias, and to check
KERNEL SITE PARAMS to make sure taskman will run.
It looks like the Linux configuration provides for three fields in the
hosts file. The first is IP address, the second is the name of your
computer (a shortname), and the longname might be the URL of your system.
If this is really the case, then Kernel could use that shortname as a "box"
name, to identify your "box" on a network.
Maybe there is a difference between Redhat9 and Fedora, and maybe there is
a difference in the GTM systems we are running, and maybe a difference in
the VA Kernel we are running.
The comments below indicate all three are different, and we need to get on
the same page of music before our conversation will make sense.
Dan
GTM>h
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Beza,
Fil Sent: Sunday, November 21, 2004 3:07 PM
To: hardhats-members@lists.sourceforge.net
Subject: RE: [Hardhats-members] Volume Sets
If it is about VistA Kernel, I doubt if I could say anything that Dan
doesn't know. He's the hacker and knows more about the ins and outs of
Kernel than I do.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Nancy E.
Anthracite
Sent: Saturday, November 20, 2004 5:33 PM
To: hardhats-members@lists.sourceforge.net
Subject: Re: [Hardhats-members] Volume Sets
I am running Fedora Core 2, which isn't that far from Redhat and the short
name comes from the first half of that localhost.localdomain or
XXX.localdomain XXX part, but it does not have to be the same as the volume
set. I know that from my installation. You set the volume set internally
in Vista from $P(^%ZOSF("PROD"),",",2) and that is set, I think, in the
volume set file and it is the volume set that is the signon/production
volume set in the volume set file.
Fil, Wally, Rick, Marianne or somebody who knows this stuff, help us out
here, please.
On Saturday 20 November 2004 03:24 pm, Daniel Gray wrote:
Nancy:
Little things like this are really slowing down my progress, but I am
learning a lot about Linux and GTM in the process. Getting a little déjà
vu of the early days in VistA. The only FileMan doc was, I think, 20
pages
long (but, as George T will attest), everything was there, you only
needed to know where to look. We would call him up, he would say
(without looking), "page 18, on the bottom, there in the example".
Here is my origional hosts file, right after installation of Redhat 9:
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
GTM>D GETENV^%ZOSV
hostname: Unknown host
GTM>ZWRITE
Y="VAH^ROU^^ROU:"
GTM>
Here is the "hosts" file as it is now.
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 ROU x1-6-00-e0-18-62-af-ec
GTM>D GETENV^%ZOSV
GTM>ZWRITE
Y="VAH^ROU^ROU^ROU:ROU"
If I take out the third field, leaving only two,
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 ROU
GTM>D GETENV^%ZOSV
hostname: Unknown host
GTM>ZWRITE
Y="VAH^ROU^^ROU:"
Now change only the "hosts" middle field to AAA, to avoid confusion
GTM>D GETENV^%ZOSV
GTM>ZWRITE
Y="VAH^ROU^AAA^ROU:AAA"
GTM>
Here is the code in ^%ZOSV, you can see what the problem is, the -s
argument tells GTM to retrieve the shortname from the hosts file, and it
doesn't work if there is no longname. What name it gets, I think MUST
correspond to Volume Set, in order for things to work right. I think
also,
Volume Set should be three letters.
GETENV ;Get environment Return Y='UCI^VOL^NODE^BOX LOOKUP'
N %HOST,%V S %V=^%ZOSF("PROD"),%HOST=$$RETURN("hostname -s")
S Y=$TR(%V,",","^")_"^"_%HOST_"^"_$P(%V,",",2)_":"_%HOST
Q
RETURN(%COMMAND) ; ** Private Entry Point: execute a shell command &
return
the resulting value **
;
; %COMMAND is the string value of the Linux command
N %VALUE S %VALUE="" ; value to return
N %FILE S %FILE=$$TEMP_"RET"_$J_".txt" ; temporary results file
ZSYSTEM %COMMAND_" > "_%FILE ; execute command & save result
O %FILE:(REWIND) U %FILE R:'$ZEOF %VALUE C %FILE:(DELETE) ; fetch
value & delete file
;
QUIT %VALUE ; return value
;
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of Nancy
E.
Anthracite
Sent: Saturday, November 20, 2004 4:45 AM
To: hardhats-members@lists.sourceforge.net
Subject: Re: [Hardhats-members] Volume Sets
Please show me the output of GETENV.... and hostname -s and what Linux
distribution are you using? ROU is usually the volume set. I am using
Fedora Core 2. I am glad it worked but I am beginning to think it was
dumb
luck!
On Saturday 20 November 2004 03:28 am, Daniel Gray wrote:
Thanks Nancy,
I'm not certain how to post a continuation to a thread.
Just reply, I guess, I can't find any way on sourceforge.
Nancy, Your advice worked. I did have to experiment a little.
Actually the hosts file seems to have the shortname in the middle.
127.0.0.1 ROU x1-6-00-e0-18-62-af-ec
I wonder if the long name is a mac address. It was the default when I
installed Linux.
Now Taskman works, the device manager seems to work,
Now I need to get some devices working.
Anybody able to queue to a USB printer ?
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of
Nancy
E.
Anthracite
Sent: Friday, November 19, 2004 8:54 PM
To: hardhats-members@lists.sourceforge.net
Subject: Re: [Hardhats-members] Volume Sets
Let's try that again. I posted this in the wrong thread previously.
It gets the name from hostname -s. In my system, that traces back
to /etc/hosts and to set the name to Morphix, for instance, this is
what you
have to do in the file:
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 Morphix.localdomain Morphix
On Friday 19 November 2004 11:00 pm, Daniel Gray wrote:
Anybody:
I am looking for information about the relationship between Linux
"Host
Name", Vista "Volume Set", and Taskman "Box-Pair". %ZOSV does a
function to recover the Linux "hostname", and this information is
used,
for instance, by %ZIS to determine whether the requested device is
within the reach of the user. Taskman also uses Linux "hostname" to
see if there is a box-pair defined, so taskman can run on specific
server nodes.
I am new to Linux, is there any way to change the "hostname"? When I
installed Linux, I took the default and it is 20 characters long.
Vista likes simple names, like VAH, AAA, etc.
I think, without a proper setup of hostname, volumeset, box-pair, and
so forth, neither deviceman nor taskman will work correctly. At
least,
I could not get SemiVistAViva0.4 to operate correctly, and I suspect
this is the problem. I found after loading it that in Box-pair there
was an assumed a name for my computer. GETENV^%ZOSV gets hostname
for many VistA functions.
Is there any guidance out there for this issue ?
Dan Gray
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