Mike, I'm not sure if it is the same case, but Omegamon XE uses DCSS and have some details to take into consideration.
The command for define the dcss is:
DEFSEG dcssname <hexpage1 - hexpage2> <type>
where:
- <hexpage1 - hexpage2> = the range of pages that are to be saved. Here you
specify the starting page and the ending page.
- <type> = the type of virtual machine access permitted to pages in the
range.
Considerations:
1- if the begin of dcss is lower than the size of the virtual machine, you
must open "a hole" in machine's memory to imbed it.
Like it: For a machine with 256M (140 + 116), use this command in
Profile.EXEC: DEF STORE CONFIG 0.140M 160M.116M
2- if the dcss is greater, you must inform the kernel where is the end of
the memory.
If your guest storage is sufficiently low, your entire DCSS address range
might be above the guest storage. You can then modify the /etc/zipl.conf
file to make the DCSS accessible to the Linux guest. Perform these steps to
extend the Linux address range:
1. Add the following command to the [ipl] section of the parameters line in
the /etc/zipl.conf file:
mem=<address>
where <address> is an address at or above the upper limit of the DCSS.
Please, take a look on manual GC32-1957-00 - OMEGAMON XE on z/VM and Linux,
Planning and Configuration Guide
Best regards,
______________________________________________
Clovis Pereira
zVM & zOS Support - SWS
Maintenance and Technical Support Services
MTS Brazil
phone: 55-11-2132-3399
[EMAIL PROTECTED]
Michael MacIsaac
<[EMAIL PROTECTED]
om> To
Sent by: Linux on [email protected]
390 Port cc
<[EMAIL PROTECTED]
IST.EDU> Subject
Re: swap to DCSS
documentation/cookbook?
08/08/2008 11:59
Please respond to
Linux on 390 Port
<[EMAIL PROTECTED]
IST.EDU>
Carsten,
> I am willing to guide you through the setup process.
> In short, you'll have to do the following steps:
> - use DERFSEG to define a dcss with one page "exclusive write" and the
> rest "exclusive nonsaved" access mode
Can you give one example of this command? Is it OK to do this step from
MAINT? In Pieter's example, would this have to go above the 8GB line?
> We have'nt got a good documentation on the setup unfortunatly
I have the Virtualization Cookbooks R/W for a short while longer before
they go through the "ITSO publishing machine". I could throw a quick
example at the bottom of the "Miscellaneous Recipes" chapter. Doing so
might help the community - so more specific examples will be most helpful.
I have a 5.4 system to try it on. Thanks.
"Mike MacIsaac" <[EMAIL PROTECTED]> (845) 433-7061
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