On Monday, 12/10/2001 at 11:02 EST, Nick Gimbrone
[EMAIL PROTECTED] wrote:
The MTU sizes on both sides of the CTC connection must match. Make
both
sides 32768 or something. (VTAM CTC connections have the same issues!
If
the buffer sizes don't match you get truncated PIUs...) This is the
On Tuesday, 12/11/2001 at 03:11 EST, Nick Gimbrone
[EMAIL PROTECTED] wrote:
It would have been better if the TCP/IP CTC protocol included an
exchange
of buffer sizes using a pre-defined small I/O buffer. But it didn't
and
that's the way the ball bounces. (The restriction being that the
On Tuesday, 12/11/2001 at 05:34 EST, Patterson, Ross
[EMAIL PROTECTED] wrote:
Alan Altmark [EMAIL PROTECTED] writes:
Nah. Instead of VCTC, use z/VM 4.2 and guest LANs with virtual
HiperSockets.
Did I miss something? The zSeries HiperSockets Redpaper
said that HiperSockets are QDIO
On Wednesday, 12/19/2001 at 02:19 EST, David Boyes [EMAIL PROTECTED]
wrote:
I'm walking over to engineering right now to see
what we'll do
with our 2.4 beta (and upcoming GA's) in terms of switching
back to 3215
support.
Does anyone else on the list have comments
On Thursday, 12/20/2001 at 01:56 EST, David Boyes [EMAIL PROTECTED]
wrote:
the 2001-12-12 sections describing the 31-/64-bit OCO-modules
have been updated to clarify on HiperSockets support being
currently available in LPAR, only, and noting the prereq on
future VM-service (PTFs) for
On Wednesday, 01/16/2002 at 01:03 EST, Hines Daniel (sys1dmh)
[EMAIL PROTECTED] wrote:
Is it broadcasting that is not supported or multicasting??
Dan
-Original Message-
From: Post, Mark K [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, January 16, 2002 12:48 PM
To: [EMAIL PROTECTED]
On Wednesday, 01/16/2002 at 01:53 EST, Post, Mark K [EMAIL PROTECTED]
wrote:
Is that VM's treatment of point to point links, or the way Linux/390
handles
them?
That is VM's treatment of p2p. I would expect Linux to do the same since,
as Alan Cox points out, multicast is an IP thing, not a h/w
On Thursday, 01/17/2002 at 10:07 EST, Michael Joseph
[EMAIL PROTECTED] wrote:
Would you mind telling a little more about the problems with OSPF and
netmask? Also, do I understand correctly that z/VM will act as a router
in
a dynamic routing environment?
I'm sorry, but I don't remember the
On Thursday, 01/24/2002 at 10:32 EST, Post, Mark K [EMAIL PROTECTED]
wrote:
Except when dealing with an OCO module, IBM is the only one capable of
working on the problem, so most of those options aren't applicable.
While that's true, it doesn't mean that you can only get OCO service by
having
On Monday, 02/04/2002 at 09:47 EST, Norman Bollinger
[EMAIL PROTECTED] wrote:
Its a matter of programmer discipline and management follow through.
When I
write a message I know
why I am writing it and what it means. It only takes a minite or two to
document that at that moment. If my boss
On Tuesday, 02/12/2002 at 01:42 PST, Marcy Cortes [EMAIL PROTECTED]
wrote:
Now, one more question! In the TCP/IP PC manual, p.508 lists
some recommended MTU sizes for various types of interfaces. What's
a good MTU size for guest lan? (our primary app at this point
is apache webserving).
On Thursday, 02/14/2002 at 12:17 EST, Scully, William
[EMAIL PROTECTED] wrote:
Restating what I think you mentioned earlier, it seems that TCP/IP on VM
is
limited to a 32K buffer. I've looked in the TCP/IP for VM doc and I
don't
see any records which control the size of that buffer. Have I
On Monday, 02/18/2002 at 10:33 EST, Benton, Gerald
[EMAIL PROTECTED] wrote:
1) When we first brought up Suse from our HCD we found we could not
connect to the OSA facility. We had to take one of the OSA channels
offline to the two test MVS systems before we could get the Suse
to
How do I make Linux forward broadcasts from one interface to another?
(Sort of like a bridge...)
Regards,
Alan
IBM Senior Software Engineer
z/VM Development, Endicott, NY
Phone 607.752.6027fax 607.752.1497 t/l 852
On Monday, 02/25/2002 at 12:01 ZE2, Yuval Turgeman [EMAIL PROTECTED]
wrote:
Hello,
I need some help, and I couldn't find an answer anywhere on the web, so
I hope someone could help me out here...
I have some major problems with vm's TCPIP. When I configure linux to
use IUCV, the kernel
On Monday, 02/25/2002 at 06:22 ZE2, Yuval Turgeman [EMAIL PROTECTED]
wrote:
Quoting Pasi Sutinen [EMAIL PROTECTED]:
Normal Linux guest without timer patch will hang in Q3, because of VM
will
not drop it until 300 ms idle.
Timer will bring Linux guest to the Q3 on every timer tics (100 ms)
On Wednesday, 02/27/2002 at 09:20 PST, Wolfe, Gordon W
[EMAIL PROTECTED] wrote:
1) Is there anyway via the HMC to verify IFL's have been
enabled
and are
available?
Go into the System Activity Display on the HMC. You'll have to
configure it
for your system to show what CPUs and
On Thursday, 02/28/2002 at 02:36 PST, Todd Booher [EMAIL PROTECTED]
wrote:
Being a S390/VM newbie, please excuse my ignorance
Is it a hard and fast rule that the Linux guest OS cannot be in the
same subnet as z/VM? In using other VM products (like vmware) this
doesn't seem to be a
On Friday, 03/01/2002 at 11:58 EST, [EMAIL PROTECTED] wrote:
yes, we are sharing an osa card between the lpars.
That is your problem. It is documented (some where) that a shared OSA
can
not communicate with itself (so to speak). So the idea of sending all
packets to your router first makes
On Friday, 03/01/2002 at 09:42 PST, Todd Booher [EMAIL PROTECTED]
wrote:
Thanks for the clarification, Alan. That makes more sense but
that brings up another question: What advantages/gains are you getting
by having a VM between your guest VM's and the LAN? I can see
flexibility of having
On Tuesday, 03/12/2002 at 04:27 CET, Oliver Fenker
[EMAIL PROTECTED] wrote:
we would like to establish a master linux that controls (starting,
stopping,
monitoring) all other linux guests on a single VM. We defined a SECUSER
on each
guest to make all console output visible to this master
On Tuesday, 03/26/2002 at 02:33 CST, Dennis G. Wicks [EMAIL PROTECTED]
wrote:
That is really interesting!
Where in what CP control block can we get that info?
(My 2.4.7 kernel doesn't seem to have that info anywhere.)
Diagnose 0 returns up to *5* levels of information. I don't know how
than the gethostid(). Make such a call part of the POSIX standard
or something. It's not a networking thing. gethostid(), for better or
worse, is.
Regards,
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
SIZE390 via TechXpress.
Regards,
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
request stuff already on the list, the list will never
grow, eh?)
Regards,
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
of spoiled by CMS, which, as a
single-user system, runs everything in supervisor state with no worries.
Regards,
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
FYI...I've been getting rejection letters from [EMAIL PROTECTED] (a
CCmail gateway) with the subject Message not deliverable. Those of you
with the FAA (if any) may wish to inquire.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
.)
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
On Tuesday, 04/16/2002 at 10:27ZE10, Vic Cross [EMAIL PROTECTED]
wrote:
Alan Altmark wrote:
snip
(And the problem will be magnified if z/VM adds support for IEEE
VLANs.)
/snip
I've always thought that this would be a logical extension of the
multiple
LPAR/multiple port support in OSA
Business Parter or IBM sales rep to request
IPLA licensing and we will consider it.
For non-IBM products, contact the vendor to find out if you are licensed
to run their product on IFLs.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
and VSE can not run on an IFL
(whether or not z/VM is present).
That applies to z/VM Version 4 only. z/VM Version 3 will not run on IFLs
and so cannot run as a guest of a z/VM Version 4 system while it is
running on IFLs.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
, zSeries operating systems will talk
SCSI over Fibre Channel Protocol adapters to SCSI devices.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
On Thursday, 04/18/2002 at 05:46 EST, Jay Maynard [EMAIL PROTECTED]
wrote:
On Thu, Apr 18, 2002 at 06:35:17PM -0400, Alan Altmark wrote:
On Thursday, 04/18/2002 at 10:44 EST, Rick Troth [EMAIL PROTECTED]
wrote:
And what will happen now with SCSI attachment to zSeries?
I can only hope
license for RSCS automatically.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
*p);
2084 while (*p (*p != ':') (*p != ','))
2085 p++;
It's that pesky isalnum(). VM user IDs do not have any such limitation.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
on IFLs. And, if I may ask, what do you need
RSCS and PVM for that cannot be handled by FTP or Telnet? (Given that
this is a Linux workload, not traditional apps.)
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
If anyone is running their Linux for zSeries or Linux for S/390 in a DMZ,
whether app server or firewall, please send me a brief note describing
your use. The information you provide will not be made public without
your consent.
Thanks.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
any offsets into the binary image. And, of course, the LF wasn't *really*
an LF, it was compiled/compressed code or data!
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
routing.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
images, eh? The
Linux images are all vying for a finite area of real memory.
If at all possible you need to reduce the virtual storage size and force
Linux to swap.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
broadcast.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
addresses. Answers will be graded based on
originality and legibility.)
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
On Tuesday, 05/07/2002 at 05:19 ZE3, Sergey Korzhevsky
[EMAIL PROTECTED] wrote:
Are IBM shipping mainframes with preinstalled Linux? If yes, which
distr
are they using?
No, IBM does not ship mainframes with preinstalled Linux.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
(no, I mean ext3, no, I mean
gpfs, no, I mean.wait...uh...) support in CMS.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
will have to configure it the
same way you did before you installed Linux.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
port
on an even older 3725/3705.
I am still interested in system automation tools to tie these disparate
systems together. Our bosses have repeated rejected throwing out either
the
dinosaurs or the PCs.
Say, what? The 3745 and 3746 support IP just fine.
Alan Altmark
Sr. Software Engineer
IBM z
to see the VM Community At Large step in to
help fill the void.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
actually want to use the
product and how we can change it to accomodate those wants.
Again, my apologies if my comments came across as any kind of slam. I
appreciate ALL of our customers (and I've talked to a lot of them!).
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
these areas
speak for themselves. (I don't want to give a list as some might
interpret that as an endorsement by IBM.)
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
not preclude head movement and data
transfer on other drives. In this way the o.s. bypasses the usual device
busy conditions.
It's not like the venerable multi-exposure 2305 (? Can't remember model
number. Not meant to engender OT dasd discussion.) which was hard-wired.
Alan Altmark
Sr. Software
the
highest level of parallelism available.
Things will be a bit different with zSeries FCP (SCSI) as it is attaches
to a multi-drop FC fabric, but I'll let others with more expertise on
FCP comment on that.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
must also be booted from ECKD. Once
booted, Linux can then mount the SCSI drives.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
feed)?
If you can persuade the driver to use EWA instead of W, the SBA an RA
isn't necessary. (A good driver would never use plain EW unless it needs
to force the geometry to 24x80.)
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
performance. While it can be done by the seat of
your pants, I don't recommend it.
In all three cases, there are non-IBM solutions available from other
vendors.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
for was for you to stop using very
strange Aussie-isms that require a special committee to be established
simply to determine (a) what words you used, and (2) what they meant. ;-)
On the other hand, such things broaden our horizons and keep us on our
toes (and some other metaphors).
Alan Altmark
Sr
IPL and still work fine on the 64-bit zSeries
hardware?
Yes, so unless your need more than 2GB real memory stay with what you've
got.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
sure all the guest use the same
portname (e.g. uppercase in Linux config).
When you share a card, concepts like primary router come into play that
need to be understood.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
On Friday, 06/07/2002 at 02:36 AST, Pat Carroll [EMAIL PROTECTED]
wrote:
My understanding is that z/VM does not support the HMC
z/VM *does* support the HMC integrated system console. A 3270 is
required for installation and configuration, but not for operation.
Alan Altmark
Sr. Software
are two different things. You want to use CP SEND
SYSSOFT1 halt (from and exec or pipe with Address Command in effect to
maintain case).
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
for peripheral performance speed, and video card performance, and
emphasizes RAM as the #1 arbiter of performance.
A nice read. (Article not in the online PMZone yet.)
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
the default (0) is fine.
Unless it is a dual-port Ethernet/Token Ring (ENTR) OSA. Those cards have
2 ports, addressable via the relative adapter number.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
doesn't use the console.)
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
) No. See #2. To change it you would have to modify
drivers/s390/net/netiucv.c to parse the system name out of the parms and
specify it on the iucv_connect() call. Right now netiucv.c variable
iucv_host is defined as a null constant. I could envision
iucv=[systemname.]userid as the parm.
Alan
On Thursday, 06/13/2002 at 01:01 AST, Scott Chapman [EMAIL PROTECTED]
wrote:
z/OS 64-bit implies no expanded storage. Is z/VM different in that
regard?
Scott Chapman
American Electric Power
Yes. z/VM can make use of xstore even in 64-bit mode. z/OS cannot.
Alan Altmark
Sr. Software
and Messages CP manual but cannot
find
a wait state code of 29C so I'm not sure what action to take.
Has anyone encountered this before?
Thanks.
Rich, that wait state is from Linux, not VM. CP is just reporting the
PSW at the time the wait was entered.
Alan Altmark
Sr. Software Engineer
IBM z
Jim, just a friendly warning to NOT distribute any Linux modifications to
non-IBMers without the permission of the IBM Open Source Steering
Committee. BOE is the defined distribution point for IBM contributions
to open source.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
James
converter! ;-)
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
systems, consider running
them as V=F (one can run V=R) in order to get them the performance boost
they need.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
, then CP or other
guests can use the OSA.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
that simple, since, as you noted, for QDIO you also have
to have the magic cookie (port name) to indicate that you have a clue
about what you are doing. (The port name does not apply to LCS mode.)
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
,
but the syntax of the MPROUTE config file isn't much fun...).
I cannot tell a lie: I was not involved in defining the syntax of MPROUTE
CONFIG. That is courtesy of my friends in MVS CommServer development. :-)
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
be specified as primary router.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
case. (Why should
you have to do all the footwork? Let the vendor do it.)
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
can
hire anyone you want.
Mark Post
According to IBM's web site, an IBM Global Services Support Line contract
covers only SuSE and Turbolinux. That said, I'd call IBM or my Business
Partner to get the latest information.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
times. So, asking what's the fastest is different than
what's the fastest Chong achieved using his evironment and techniques.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
standpoint, the partitioning (LPAR) and virtualization
(z/VM) capability of IBM zSeries allow you to add additional workload via
horizontal growth, rather than vertical. Of course, vertical is still
available as an option where needed.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
to 1M
and the Makefile is done using arch/s390/vmlinux-shared.lds, which aligns
the data segment to the next MB. I don't think there are symbols to
represent start/end of code and start/end of data. :-(
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
On Wednesday, 09/18/2002 at 02:12 AST, Adam Thornton
[EMAIL PROTECTED] wrote:
Wed, Sep 18, 2002 at 01:50:05PM -0400, Alan Altmark wrote:
(Steve Shultz wrote)
2) Your storage should be defined to whatever size you want as the
minimum
size of the virtual machine to ipl your shared system. I
COMPUTERWORLD article
Partitioning: Your Mainframe Becomes A Hotel For OS 'Guests'
Partitions allow a single mainframe to house multiple operating system
'guests.' Here are three approaches.
http://computerworld.com/networkingtopics/networking/story/0,10801,74127,00.html
Alan Altmark
Sr
unexpectedly,
causing CP READ.
I don't know of anything other than CP READ which will cause FORCED BY
SYSTEM. The question is: How did the gueset it get into CP READ?
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
in your RDR.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
the driver for it, Linux could learn
when SET TIMEZONE is done, and change the default TZ on the fly. But,
presumably Linux can already handle this itself without any assistance
from external sources.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
is dumping what it knows about BsdRoutingParms. You aren't
using BsdRoutingParms, so the information is meaningless anyway. (The
default BSDRoutingParms MTU size is 0.)
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
:
DTCRTD4830E The main select was interrupted
IUCV error (EIBMIUCVERR)
DTCRUN1015I Server ended with RC=12 at 11:52:03 on 24 Oct 2002
(Thursday)
* * * End of File * * *
Assuming the stack did not, in fact, go down (as indicated by line 2),
then contact the IBM Support Center.
Alan Altmark
Sr. Software
.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
Don't Ask - Don't Tell
policy.)
Peace. Love. Linux. (Let's all hold hands and sing Kumbaya.)
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
/app server
clusters have minidisks on different volumes so you can take down one
server at a time, yet still maintain the service.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
?) and all will be well
(he said hopefully).
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
) gets to be
primary/default. If something in the LPAR is acting as a router, then
that something should be the primary/default in order to avoid dropped
packets.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
is deactivated to
issue its own CP SHUTDOWN. Further, CP SHUTDOWN will trigger SIGNAL
SHUTDOWN automatically to all guests which support it.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
defines the MTU everyone else on the LAN
segment will use.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
:
IODEVICE ADDRESS=(1000,128),CUNUMBR=(B000),STADET=Y,UNIT=SCTC
CNTLUNIT CUNUMBR=B000,PATH=(B0),UNITADD=((00,128)),UNIT=SCTC
Mark, UNIT=SCTC is needed for ESCON-attached routers. For parallel
attachment, use UNIT=3088 on CNTLUNIT and UNIT=CTC on IODEVICE.
Alan Altmark
Sr. Software Engineer
IBM z
known to IBM.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
10.4.0.1 OSA900 1500 0
Your first entry (10.4.0.1) is suspect. If you can provide the correct
addresses and subnet masks, then we can help you with the configuration
syntax.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
channel
adapters and terminal connections (e.g. coax) in it. IBM replaced the 3174
with the 2074, an xSeries box with one or two ESCON channel adapters on
one end, and a TN3270E server on the other. You telnet to the box and you
get a non-SNA local 3270 connection on the host.
Alan Altmark
Sr. Software
. (It looks like a
channel-attached tape drive.)
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
, but perhaps you need to specify port 0?
Maybe microcode is changing logical vs. physical port # binding? I.e.
you can get at both ports, but logical port 0 will be assigned to physical
port 1 in LPAR 5?
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
wanted to write
a 3420 driver for it, Linux could access it. (Dunno, maybe the 3480
driver is good enough.)
3422 and 3270 are the only functions available on the 2074.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
?
My fave website is http://lxr.linux.no/source/. It is everything that has
been integrated into the kernel source tree.
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
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