On Dec 3, 2007 7:13 AM, Leland Lucius [EMAIL PROTECTED] wrote:
But, I like a little excitement every so often, so I got this crazy idea to
replace all secondary swap with VDISK and just boost up the VM paging
volumes.
That seems like a good idea to me. But what else can I say, since we
have
I will be out of the office starting 12/03/2007 and will not return until
12/05/2007.
I will be out of the office Monday 12/3 and will return Wednesday 12/5. I
will be checking email and vocie messages daily and will respond by COB
12/5. Thank you.
It seems hasty to say that Because of the Linux algorithm for using
swap, a VDISK used for swap even a little will eventually be used
completely.
That's the same as saying a linux swap area used even a little will
eventually be used completely. Why would linux do that? That's not
what my SLES9
On Dec 3, 2007 2:43 PM, Romanowski, John (OFT)
[EMAIL PROTECTED] wrote:
It seems hasty to say that Because of the Linux algorithm for using
swap, a VDISK used for swap even a little will eventually be used
completely.
That's the same as saying a linux swap area used even a little will
I'm currently installing z/VM 5.3. I have two other LPARs on this box
running z/OS 1.4 and z/OS 1.7. Can I maintain (either temporarily or
permanently) my hardware/software configuration for the z/VM LPAR using
HCD under z/OS? I have a huge learning curve ahead of me and not having
to learn
Oreos and Coca-Cola.
-Original Message-
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Thomas Kern
Sent: December 2, 2007 22:35
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: z/VM Installation from DVD
Chocolate helps a lot.
Alot of chocolate help.
/Tom Kern
Adam
I do not have personal knowledge of this, but I believe the answer is a
resounding YES. In fact, attempting to use both z/OS HCD and z/VM HCD on
the same box could result in major grief. Choose one, and stick to it.
Peter
-Original Message-
From: The IBM z/VM Operating System
I use z/os HCD to maintain both z/os(three lpars) and z/vm (an IFL). We
share DASD and I just mark the dasd that z/vm uses as reachable for that
partition. The only other thing that is different for us is we mark
WLMPAV as NO (where z/os has YES). Hope that helps!
You should be able to use z/OS's HCD to create the IOCDS for z/VM. I
believe you will need to send the files to VM and use the IOCP routine
to write it out to the SE
I use this code to compile and write out the IOCDS source file
Hi, Chris.
Absolutely yes...stay with z/OS HCD to manage your hardware/software
configurations for both z/OS and z/VM LPARs. z/VM ships it's own version
of HCD only because some sites installing it might not already have z/OS
available. z/VM is quite happy having z/OS's HCD manage it's
Sure. I've done that in the past with NO problem. You need an LPAR
defination, but not an OS defination. Define the LPAR as being an OS
LPAR, not a CF LPAR. You don't need an OS defination because z/VM
doesn't use that. The OS defination only contains z/OS information like
the EDT. z/VM will get
On 12/3/07 2:55 AM, Rob van der Heij [EMAIL PROTECTED]
wrote:
Because of the Linux algorithm for using swap, a VDISK used for swap
even a little will eventually be used completely.
I realize that VDISK is special in the world of Linux, but why doesn't
someone give us the option of preventing
Leland,
If you're looking at code for that swapping algorithm:
what happens when highest priority swap area (swap1) gets to the end,
swap1 has free slots and the next higher priority swap area (swap2) has
free clusters?
Does linux start over at the beginning of swap1 and fill swap1 before
Our I/O configuration is done completely via z/OS. The only downside I can
see to it is that z/VM can¹t dynamically add devices, since it has no access
to the source.
--
.~.Robert P. Nix Mayo Foundation
/V\RO-OE-5-55 200 First Street SW
/ ( ) \
On Dec 3, 2007 4:25 PM, Leland Lucius [EMAIL PROTECTED] wrote:
I realize that VDISK is special in the world of Linux, but why doesn't
someone give us the option of preventing this? Looks to me like adding one
line in swapfile.c would allow pages to cluster at the beginning of a disk
instead
On Dec 3, 2007 4:51 PM, Romanowski, John (OFT)
[EMAIL PROTECTED] wrote:
Leland,
If you're looking at code for that swapping algorithm:
what happens when highest priority swap area (swap1) gets to the end,
swap1 has free slots and the next higher priority swap area (swap2) has
free clusters?
I was thinking that the SRVRFTPO CONFIG version of TIMESTAMP might
actually apply to the FTPSERVE LOG file. I already use TERM TIMPSTMP ON
for the console messages, so the question still stands. Is the
documentation wrong (TIMESTAMP ON does not appear to be the default, as
stated), or is there a
It has always been the case that for a given system (e.g. z9), there is one
and only one LPAR that should place the IOCP online; and only one LPAR that
should be doing dynamic IOCP changes. This is somehow enforced by that
tokens are used, and when z/OS is the master, a VM LPAR can no longer do
I have a special situation here where the z/VM system is a separate box
then the z/OS system which requires the files to be sent to me and I
build them on the VM system.
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Kris Buelens
Sent:
On Monday, 12/03/2007 at 11:55 EST, Schuh, Richard [EMAIL PROTECTED]
wrote:
I was thinking that the SRVRFTPO CONFIG version of TIMESTAMP might
actually apply to the FTPSERVE LOG file. I already use TERM TIMPSTMP ON
for the console messages, so the question still stands. Is the
documentation
Rob said earlier that after linux starts using a lower priority swap
area it doesn't migrate back from swap2 to swap1 when stuff is freed
later.
So do you find after swapoff/on a high priority VDISK that linux starts
using it? or does it ignore it and keep filling the dasd swap?
On Mon, 3 Dec 2007 08:43:45 -0500, Romanowski, John (OFT)
[EMAIL PROTECTED] wrote:
Now that the swap topic's open again:
What is the basis for advising z/VM VDISK users to have a hierarchy of
multiple linux swap areas of increasing sizes? Are there feature(s) of
the swapping algorithm that
Yes. This is in fact the recommended method, since VM is far, far more
tolerant about I/O configuration than z/OS.
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Hilliard, Chris
Sent: Monday, December 03, 2007 10:06 AM
To:
After the swap off/on linux uses that swap area again. I believe what Ro
b
said/meant is that it doesn't reuse indiviual pages that it otherwise
could/should.
The swap off/on makes it look brand new by wiping out all prior knowledge
.
Brian Nielsen
On Mon, 3 Dec 2007 13:05:57 -0500,
We do all the HCD maintenance from one of the z/OS lpars. You do not
have to send the files to VM. I'm not sure but what that might cause a
problem altho you would be just loading the same set of IO definitions.
VM finds the IO definitions at ipl time. I don't even know if our IOCP
program
Leland Lucius wrote:
It sounds like a good idea and since Linux is open source, I suspect
that if you wrote it, Leland, we might use it.
Jim
I realize that VDISK is special in the world of Linux, but why doesn't
someone give us the option of preventing this? Looks to me like adding one
line
On 12/3/07 12:15 PM, Jim Bohnsack [EMAIL PROTECTED] wrote:
Leland Lucius wrote:
It sounds like a good idea and since Linux is open source, I suspect
that if you wrote it, Leland, we might use it.
The option would have to be on a per device basis since we'd still want
normal disk to use the
On Dec 3, 2007 7:16 PM, Brian Nielsen [EMAIL PROTECTED] wrote:
The swap off/on makes it look brand new by wiping out all prior knowledge
Correct. That forces Linux to migrate pages off that disk. If there's
a fair amount of blocks in-use (according to Linux) you will find that
it takes some
I need to understand how CP monitor records of Domain 6 record 3 are
interpreted. I am writing an exec to give us a rough idea of what volumes
are doing what. I have used examples from the Redbook website for pieces
of
code. In my exec I coordinate and save the first and subsequent related
Hello Everyone,
Is HCD a chargeable item? It sounds interesting.
I have it on the VMSYS but it is not installed.
568411219 HCD/HCM for z/VM 5VMHCD20 0409974
Ed Martin
Aultman Health Foundation
330-588-4723
[EMAIL PROTECTED]
ext. 40441
Hi, Ed.
No, HCD is not a chargeable itemit's shipped as part of the base
z/VM 5.3 offering and you can start using it straight away.
Edward M. Martin wrote:
Hello Everyone,
Is HCD a chargeable item? It sounds interesting.
I have it on the VMSYS but it is not installed.
Thank you to all that responded to my HCD question. The various
responses have been a great help.
Hello Dave,
Thank you. I have need of it soon.
Ed Martin
Aultman Health Foundation
330-588-4723
[EMAIL PROTECTED]
ext. 40441
-Original Message-
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED]
On
Behalf Of Dave Jones
Sent: Monday, December 03, 2007 2:05 PM
On Mon, Dec 3, 2007 at 1:05 PM, in message
[EMAIL PROTECTED],
Romanowski, John (OFT) [EMAIL PROTECTED] wrote:
Rob said earlier that after linux starts using a lower priority swap
area it doesn't migrate back from swap2 to swap1 when stuff is freed
later.
To be more explicit, if swap1 fills
On Mon, Dec 3, 2007 at 1:43 PM, in message
[EMAIL PROTECTED], Leland Lucius [EMAIL PROTECTED]
wrote:
On 12/3/07 12:15 PM, Jim Bohnsack [EMAIL PROTECTED] wrote:
Leland Lucius wrote:
It sounds like a good idea and since Linux is open source, I suspect
that if you wrote it, Leland, we might
Just a reminder that the next Linux on System z Live Virtual Class is
Tuesday, Dec 4th at 11:00 AM ET.
There is no charge to participate in these technical education sessions.
Date: Tuesday, December 4, 2007
Time: 11:00 AM ET U.S. Canada / 5:00 PM GMT
Duration: 75 minutes
Topic:
It's true that you can't add devices dynamically from VM if VM isn't the
owner of the IOCDS, but you can add them from z/OS and VM will see them.
Dennis
I do not feel obliged to believe that the same God who has endowed us
with sense,
Chuck Morse sent an announcement to the linux-390 listserver on November 16.
Alan Ackerman wrote:
Wish you'd given us more warning. I just found this, and the class starts
at 8 am tomorrow Pacific
Time, and if I send it to my colleagues, most of them won't see it in ti
me. Did I miss some
On Mon, 3 Dec 2007 17:32:02 -0500, Pamela Christina in cold and snow Endi
cott NY
[EMAIL PROTECTED] wrote:
Just a reminder that the next Linux on System z Live Virtual Class is
Tuesday, Dec 4th at 11:00 AM ET.
There is no charge to participate in these technical education sessions.
Date:
You're right and we've certainly done or do that.
Jim
O'Brien, Dennis L wrote:
It's true that you can't add devices dynamically from VM if VM isn't the
owner of the IOCDS, but you can add them from z/OS and VM will see them.
Dennis
I
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